Sample records for experiment hetdex description

  1. HETDEX: The Physical Properties of [O II] Emitters

    NASA Astrophysics Data System (ADS)

    Ciardullo, Robin; Gronwall, C.; Blanc, G.; Gebhardt, K.; Jogee, S.; HETDEX Collaboration

    2012-01-01

    Beginning in Fall 2012, the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) will map out 300 square degrees of sky via a blind integral-field spectroscopic survey. While the main goal of the project is to measure the power spectrum of 800,000 Lyα emitters between 1.9 < z < 3.5, the survey will also identify 1,000,000 [O II] emitting galaxies with z < 0.5. Together, these data will provide an unprecedented view of the emission-line universe and allow us to not only examine the history star formation, but to study the properties of star-forming galaxies as a function of environment. To prepare for HETDEX, a 3 year pilot survey was undertaken with a proto-type integral-field spectrograph (VIRUS-P) on the McDonald 2.7-m telescope. This program, which tested the HETDEX instrumentation, data reduction, target properties, observing procedures, and ancillary data requirements, produced R=800 spectra between 350 nm and 580 nm for 169 square arcmin of sky in the COSMOS, GOODS-N, MUNICS-S2, and XMM-LSS fields. The survey found 397 emission-line objects, including 104 Lyα emitters between 1.9 < z < 3.8 and 284 [O II] galaxies with z < 0.56. We present the properties of the [O II] emitters found in this survey, and detail their line strengths, internal extinction, and emission-line luminosity function. We use these data to show that over the past 5 Gyr, star-formation in the universe has decreased linearly, in both in an absolute and relative sense. We compare the star formation rates measured via [O II] fluxes to those determined via the rest-frame ultraviolet, explore the extinction corrections for our sample, and discuss the implications of our work for the main HETDEX survey.

  2. The Spitzer-HETDEX Exploratory Large-area Survey

    NASA Astrophysics Data System (ADS)

    Papovich, C.; Shipley, H. V.; Mehrtens, N.; Lanham, C.; Lacy, M.; Ciardullo, R.; Finkelstein, S. L.; Bassett, R.; Behroozi, P.; Blanc, G. A.; de Jong, R. S.; DePoy, D. L.; Drory, N.; Gawiser, E.; Gebhardt, K.; Gronwall, C.; Hill, G. J.; Hopp, U.; Jogee, S.; Kawinwanichakij, L.; Marshall, J. L.; McLinden, E.; Mentuch Cooper, E.; Somerville, R. S.; Steinmetz, M.; Tran, K.-V.; Tuttle, S.; Viero, M.; Wechsler, R.; Zeimann, G.

    2016-06-01

    We present post-cryogenic Spitzer imaging at 3.6 and 4.5 μm with the Infrared Array Camera (IRAC) of the Spitzer/HETDEX Exploratory Large-Area (SHELA) survey. SHELA covers ≈24 deg2 of the Sloan Digital Sky Survey “Stripe 82” region, and falls within the footprints of the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) and the Dark Energy Survey. The HETDEX blind R ˜ 800 spectroscopy will produce ˜200,000 redshifts from the Lyα emission for galaxies in the range 1.9 < z < 3.5, and an additional ˜200,000 redshifts from the [O II] emission for galaxies at z < 0.5. When combined with deep ugriz images from the Dark Energy Camera, K-band images from NEWFIRM, and other ancillary data, the IRAC photometry from Spitzer will enable a broad range of scientific studies of the relationship between structure formation, galaxy stellar mass, halo mass, the presence of active galactic nuclei, and environment over a co-moving volume of ˜0.5 Gpc3 at 1.9 < z < 3.5. Here, we discuss the properties of the SHELA IRAC data set, including the data acquisition, reduction, validation, and source catalogs. Our tests show that the images and catalogs are 80% (50%) complete to limiting magnitudes of 22.0 (22.6) AB mag in the detection image, which is constructed from the weighted sum of the IRAC 3.6 and 4.5 μm images. The catalogs reach limiting sensitivities of 1.1 μJy at both 3.6 and 4.5 μm (1σ, for R = 2″ circular apertures). As a demonstration of the science, we present IRAC number counts, examples of highly temporally variable sources, and galaxy surface density profiles of rich galaxy clusters. In the spirit of the Spitzer Exploratory programs, we provide all of the images and catalogs as part of the publication.

  3. Cure-WISE: HETDEX data reduction with Astro-WISE

    NASA Astrophysics Data System (ADS)

    Snigula, J. M.; Cornell, M. E.; Drory, N.; Fabricius, Max.; Landriau, M.; Hill, G. J.; Gebhardt, K.

    2012-09-01

    The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) is a blind spectroscopic survey to map the evolution of dark energy using Lyman-alpha emitting galaxies at redshifts 1:9 < z < 3:5 as tracers. The survey instrument, VIRUS, consists of 75 IFUs distributed across the 22-arcmin field of the upgraded 9.2-m HET. Each exposure gathers 33,600 spectra. Over the projected five year run of the survey we expect about 170 GB of data per night. For the data reduction we developed the Cure pipeline. Cure is designed to automatically find and calibrate the observed spectra, subtract the sky background, and detect and classify different types of sources. Cure employs rigorous statistical methods and complete pixel-level error propagation throughout the reduction process to ensure Poisson-limited performance and meaningful significance values. To automate the reduction of the whole dataset we implemented the Cure pipeline in the Astro-WISE framework. This integration provides for HETDEX a database backend with complete dependency tracking of the various reduction steps, automated checks, and a searchable interface to the detected sources and user management. It can be used to create various web interfaces for data access and quality control. Astro-WISE allows us to reduce the data from all the IFUs in parallel on a compute cluster. This cluster allows us to reduce the observed data in quasi real time and still have excess capacity for rerunning parts of the reduction. Finally, the Astro-WISE interface will be used to provide access to reduced data products to the general community.

  4. Bayesian Redshift Classification of Emission-line Galaxies with Photometric Equivalent Widths

    NASA Astrophysics Data System (ADS)

    Leung, Andrew S.; Acquaviva, Viviana; Gawiser, Eric; Ciardullo, Robin; Komatsu, Eiichiro; Malz, A. I.; Zeimann, Gregory R.; Bridge, Joanna S.; Drory, Niv; Feldmeier, John J.; Finkelstein, Steven L.; Gebhardt, Karl; Gronwall, Caryl; Hagen, Alex; Hill, Gary J.; Schneider, Donald P.

    2017-07-01

    We present a Bayesian approach to the redshift classification of emission-line galaxies when only a single emission line is detected spectroscopically. We consider the case of surveys for high-redshift Lyα-emitting galaxies (LAEs), which have traditionally been classified via an inferred rest-frame equivalent width (EW {W}{Lyα }) greater than 20 Å. Our Bayesian method relies on known prior probabilities in measured emission-line luminosity functions and EW distributions for the galaxy populations, and returns the probability that an object in question is an LAE given the characteristics observed. This approach will be directly relevant for the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX), which seeks to classify ˜106 emission-line galaxies into LAEs and low-redshift [{{O}} {{II}}] emitters. For a simulated HETDEX catalog with realistic measurement noise, our Bayesian method recovers 86% of LAEs missed by the traditional {W}{Lyα } > 20 Å cutoff over 2 < z < 3, outperforming the EW cut in both contamination and incompleteness. This is due to the method’s ability to trade off between the two types of binary classification error by adjusting the stringency of the probability requirement for classifying an observed object as an LAE. In our simulations of HETDEX, this method reduces the uncertainty in cosmological distance measurements by 14% with respect to the EW cut, equivalent to recovering 29% more cosmological information. Rather than using binary object labels, this method enables the use of classification probabilities in large-scale structure analyses. It can be applied to narrowband emission-line surveys as well as upcoming large spectroscopic surveys including Euclid and WFIRST.

  5. Use of failure modes and effects analysis in design of the tracker system for the HET wide-field upgrade

    NASA Astrophysics Data System (ADS)

    Hayes, Richard; Beets, Tim; Beno, Joseph; Booth, John; Cornell, Mark; Good, John; Heisler, James; Hill, Gary; Kriel, Herman; Penney, Charles; Rafal, Marc; Savage, Richard; Soukup, Ian; Worthington, Michael; Zierer, Joseph

    2012-09-01

    In support of the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX), the Center for Electromechanics at The University of Texas at Austin was tasked with developing the new Tracker and control system to support the HETDEX Wide-Field Upgrade. The tracker carries the 3,100 kg Prime Focus Instrument Package and Wide Field Corrector approximately 13 m above the 10 m diameter primary mirror. Its safe and reliable operation by a sophisticated control system, over a 20 year life time is a paramount requirement for the project. To account for all potential failures and potential hazards, to both the equipment and personnel involved, an extensive Failure Modes and Effects Analysis (FMEA) was completed early in the project. This task required participation of all the stakeholders over a multi-day meeting with numerous follow up exchanges. The event drove a number of significant design decisions and requirements that might not have been identified this early in the project without this process. The result is a system that has multiple layers of active and passive safety systems to protect the tens of millions of dollars of hardware involved and the people who operate it. This paper will describe the background of the FMEA process, how it was utilized on HETDEX, the critical outcomes, how the required safety systems were implemented, and how they have worked in operation. It should be of interest to engineers, designers, and managers engaging in complex multi-disciplinary and parallel engineering projects that involve automated hardware and control systems with potentially hazardous operating scenarios.

  6. Cure-WISE: HETDEX Data Reduction with Astro-WISE

    NASA Astrophysics Data System (ADS)

    Snigula, J. M.; Drory, N.; Fabricius, M.; Landriau, M.; Montesano, F.; Hill, G. J.; Gebhardt, K.; Cornell, M. E.

    2014-05-01

    The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX, Hill et al. 2012b) is a blind spectroscopic survey to map the evolution of dark energy using Lyman-alpha emitting galaxies at redshifts 1.9< ɀ <3.5 as tracers. The survey will use an array of 75 integral field spectrographs called the Visible Integral field Replicable Unit (IFU) Spectrograph (VIRUS, Hill et al. 2012c). The 10m HET (Ramsey et al. 1998) currently receives a wide-field upgrade (Hill et al. 2012a) to accomodate the spectrographs and to provide the needed field of view. Over the projected five year run of the survey we expect to obtain approximately 170 GB of data each night. For the data reduction we developed the Cure pipeline, to automatically find and calibrate the observed spectra, subtract the sky background, and detect and classify different types of sources. Cure employs rigorous statistical methods and complete pixel-level error propagation throughout the reduction process to ensure Poisson-limited performance and meaningful significance values. To automate the reduction of the whole dataset we implemented the Cure pipeline in the Astro-WISE framework. This integration provides for HETDEX a database backend with complete dependency tracking of the various reduction steps, automated checks, and a searchable interface to the detected sources and user management. It can be used to create various web interfaces for data access and quality control. Astro-WISE allows us to reduce the data from all the IFUs in parallel on a compute cluster. This cluster allows us to reduce the observed data in quasi real time and still have excess capacity for rerunning parts of the reduction. Finally, the Astro-WISE interface will be used to provide access to reduced data products to the general community.

  7. Spectroscopic classification of AT 2017byx as a Type Ia Supernova

    NASA Astrophysics Data System (ADS)

    Vinko, J.; Wheeler, J. C.; Sarneczky, K.; Szakats, R.; Szalai, T.; Szekely, P.; HETDEX Collaboration

    2017-05-01

    During the commissioning phase of the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) survey we observed AT 2017byx (ATLAS17bla, PS17bve) at R.A.=14:17:48.36 Dec.=+52:41:54.6 with the Visible Integral-field Replicable Unit Spectrograph (VIRUS) at McDonald Observatory on 2017-04-28.2 UT. The spectrum (range between 3500 and 5500 Angstroms) indicates that AT 2017byx is a Type Ia supernova.

  8. DOE Office of Scientific and Technical Information (OSTI.GOV)

    Papovich, C.; Shipley, H. V.; Mehrtens, N.

    We present post-cryogenic Spitzer imaging at 3.6 and 4.5 μ m with the Infrared Array Camera (IRAC) of the Spitzer /HETDEX Exploratory Large-Area (SHELA) survey. SHELA covers ≈24 deg{sup 2} of the Sloan Digital Sky Survey “Stripe 82” region, and falls within the footprints of the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) and the Dark Energy Survey. The HETDEX blind R ∼ 800 spectroscopy will produce ∼200,000 redshifts from the Ly α emission for galaxies in the range 1.9 <  z  < 3.5, and an additional ∼200,000 redshifts from the [O ii] emission for galaxies at z  < 0.5. When combined with deepmore » ugriz images from the Dark Energy Camera, K -band images from NEWFIRM, and other ancillary data, the IRAC photometry from Spitzer will enable a broad range of scientific studies of the relationship between structure formation, galaxy stellar mass, halo mass, the presence of active galactic nuclei, and environment over a co-moving volume of ∼0.5 Gpc{sup 3} at 1.9 <  z  < 3.5. Here, we discuss the properties of the SHELA IRAC data set, including the data acquisition, reduction, validation, and source catalogs. Our tests show that the images and catalogs are 80% (50%) complete to limiting magnitudes of 22.0 (22.6) AB mag in the detection image, which is constructed from the weighted sum of the IRAC 3.6 and 4.5 μ m images. The catalogs reach limiting sensitivities of 1.1  μ Jy at both 3.6 and 4.5 μ m (1 σ , for R = 2″ circular apertures). As a demonstration of the science, we present IRAC number counts, examples of highly temporally variable sources, and galaxy surface density profiles of rich galaxy clusters. In the spirit of the Spitzer Exploratory programs, we provide all of the images and catalogs as part of the publication.« less

  9. Design of the fiber optic support system and fiber bundle accelerated life test for VIRUS

    NASA Astrophysics Data System (ADS)

    Soukup, Ian M.; Beno, Joseph H.; Hayes, Richard J.; Heisler, James T.; Mock, Jason R.; Mollison, Nicholas T.; Good, John M.; Hill, Gary J.; Vattiat, Brian L.; Murphy, Jeremy D.; Anderson, Seth C.; Bauer, Svend M.; Kelz, Andreas; Roth, Martin M.; Fahrenthold, Eric P.

    2010-07-01

    The quantity and length of optical fibers required for the Hobby-Eberly Telescope* Dark Energy eXperiment (HETDEX) create unique fiber handling challenges. For HETDEX‡, at least 33,600 fibers will transmit light from the focal surface of the telescope to an array of spectrographs making up the Visible Integral-Field Replicable Unit Spectrograph (VIRUS). Up to 96 Integral Field Unit (IFU) bundles, each containing 448 fibers, hang suspended from the telescope's moving tracker located more than 15 meters above the VIRUS instruments. A specialized mechanical system is being developed to support fiber optic assemblies onboard the telescope. The discrete behavior of 448 fibers within a conduit is also of primary concern. A life cycle test must be conducted to study fiber behavior and measure Focal Ratio Degradation (FRD) as a function of time. This paper focuses on the technical requirements and design of the HETDEX fiber optic support system, the electro-mechanical test apparatus for accelerated life testing of optical fiber assemblies. Results generated from the test will be of great interest to designers of robotic fiber handling systems for major telescopes. There is concern that friction, localized contact, entanglement, and excessive tension will be present within each IFU conduit and contribute to FRD. The test apparatus design utilizes six linear actuators to replicate the movement of the telescope over 65,000 accelerated cycles, simulating five years of actual operation.

  10. Texas-style Fundraising and Public Relations for the International Year of Astronomy

    NASA Astrophysics Data System (ADS)

    Preston, Sandra; Barna, J. W.; Geiger, S.; Johnson, R.; Rimm, N.; Griffin, J.; Watson, K.

    2008-05-01

    McDonald Observatory can be a leader in Texas for the International Year of Astronomy (IYA09) celebration. Our strategy builds on the IYA09 program, tailoring it for the Texas audience, while also nationally promoting McDonald Observatory, UT Astronomy, the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) and our partnership in the Giant Magellan Telescope (GMT). We will also use this opportunity to make a concentrated outreach effort toward the Hispanic and Spanish-speaking communities in Texas and the nation, aligning with the IYA09 objective for improving relations with underrepresented and minority populations. Fundraising is a key ingredient to our success in 2009 and the future. With NASA Office of Space Science funding for education and public outreach being rethought, we will be focusing on new sources for fundraising, including private donations and corporate sponsorship, augmented by planned giving. We will take advantage of the timing to raise funds for special IYA09 programs, as well as for our large telescope projects HETDEX and GMT, along with our endowment and planned giving programs for education, outreach, and research. We will work with the UT McCombs School of Business on corporate sponsorship. During this time we will also go through a branding experience that will visually unify McDonald Observatory, UT Astronomy, and the education and public outreach programs. A consistent brand that can be used on the website and other media is our goal to build a stronger public presence that will aid us in our fundraising efforts. A Public Relations Internship Project produced a report to help launch this process. We are working with the UT College of Communications Advertising Department and with Hill Strategic Brand Solutions in Houston, Texas. We hope that our efforts will produce Texas-sized results!

  11. Current status of the HETDEX fiber optic support system

    NASA Astrophysics Data System (ADS)

    Good, John M.; Hill, Gary J.; Mollison, Nicholas T.; Vattiat, Brian L.; Murphy, Jeremy D.; Klez, Andreas; Roth, Martin M.; MacQueen, Phillip J.; Rafal, Marc D.; Savage, Richard D.; Smith, Michael P.; Bayless, Amanda J.

    2008-07-01

    The Hobby-Eberly Telescope Dark Energy eXperiment [HETDEX] will employ over 43,000 optical fibers to feed light to 192 Visible Integral-Field Replicable Unit Spectrographs [VIRUS]. Each VIRUS instrument is fed by 224 fibers. To reduce cost, the spectrographs are combined into pairs; thus, two bundles of 224 fibers are combined into a single Integral Field Unit [IFU] of 448 fibers. On the input end the fibers are arranged in a square 'dense-pack' array at the HET focal surface. At the output end the IFU terminates in two separate linear arrays which provide entry slits for each spectrometer unit. The IFU lengths must be kept to an absolute minimum to mitigate losses; however, consideration of overall project cost and duration of the science mission have resulted in the generation of two competing concepts. Multiple axes of motion are imposed on the IFUs as they span the shortest distance from the focal surface to each VIRUS unit. Arranging and supporting 96 IFUs, that have a total mass over 450 kg, in a manner that is compatible with these complex translations, together with the management of accompanying forces on the tracking mechanism of the HET, presents a significant technical challenge, which is further compounded by wind buffeting. The longer IFU concept is favored due to overall project cost, but requires tests to assure that the fibers can withstand forces associated with a height differential of 16.25 meters without FRD losses or breakage.

  12. A Study in Lyman-Alpha

    NASA Astrophysics Data System (ADS)

    Hagen, Alex

    This thesis concentrates on the physical and morphological properties of galaxies via image analysis and spectral energy distribution fitting. My research primarily focuses on Lyman-alpha emitting galaxies (LAEs) at z 2, but to place the investigations in context, comparison samples of galaxies are also used. These galaxies present the opportunity to study formation and evolution of low-mass galaxies at this redshift, which is extremely difficult using continuum selection methods. Chapter 1 gives an introduction to LAEs and puts them in the context of galaxy formation and evolution. Chapter 2 was originally published as Hagen et al. (2014), which studied the physical properties of LAEs at 1.9 < z < 3.5 from the HETDEX Pilot Survey (Adams et al. 2011; Blanc et al. 2011). This paper found that LAEs span almost a three dex range in stellar mass and could be simply drawn for the star-forming galaxy mass function. We also found that, while most LAEs are dust poor, there were some objects that weren't. The Lyman-alpha photons seem to experience the same dust opacity as the UV continuum, suggesting that in these galaxies Lyman-alpha does not undergo significant scattering before escaping. This result, when matched with radiative transfer simulations, will help to constrain how Lyman-alpha escapes galaxies. Chapter 3, originally published as Hagen et al. (2016), describes research that studies how Lyman-alpha emitters are drawn from star-forming galaxies. This work used galaxies identified via their optical emission lines (oELGs) as a comparison sample (Zeimann et al. 2015a). These oELGs have a mass range similar to LAEs and are an excellent comparison sample to LAEs. Previous comparison samples, such as LBGs, are two dex more massive than LAEs and thus do not represent galaxies in the same evolutionary state as LAEs. We compared ten physical and morphological properties between Lyman-alpha and non-Lyman-alpha emitting galaxies and found no statistically significant differences between these two populations. This null result is actually very exciting, as this suggests that LAEs--such as the 106 LAEs soon to be found by HETDEX--can be used as unbiased tracers of the star-forming galaxy population. Chapter 4, originally Hagen et al. (2017), examines the rest-frame UV and rest-frame optical sizes of LAEs and oELGs from Zeimann et al. (2015a). We found that these morphological properties are indistinguishable between the samples, and that the galaxies are smaller in the rest-frame optical compared to the rest-frame UV. This suggests that low-mass galaxies are undergoing inside-out galaxy formation, which some papers had thought was only in higher mass galaxies. Chapter 5 is a proof-of-concept to show that LAEs detected from HETDEX commissioning observations can be cross-matched to Hubble Space Telescope counterparts, which then can be used to perform significant research into galaxy formation and evolution. This chapter will continue to be developed into a journal article. Chapter 6 summarizes the findings of this work and discusses future research opportunities with HETDEX.

  13. The VIRUS data reduction pipeline

    NASA Astrophysics Data System (ADS)

    Goessl, Claus A.; Drory, Niv; Relke, Helena; Gebhardt, Karl; Grupp, Frank; Hill, Gary; Hopp, Ulrich; Köhler, Ralf; MacQueen, Phillip

    2006-06-01

    The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) will measure baryonic acoustic oscillations, first discovered in the Cosmic Microwave Background (CMB), to constrain the nature of dark energy by performing a blind search for Ly-α emitting galaxies within a 200 deg2 field and a redshift bin of 1.8 < z < 3.7. This will be achieved by VIRUS, a wide field, low resolution, 145 IFU spectrograph. The data reduction pipeline will have to extract ~ 35.000 spectra per exposure (~5 million per night, i.e. 500 million in total), perform an astrometric, photometric, and wavelength calibration, and find and classify objects in the spectra fully automatically. We will describe our ideas how to achieve this goal.

  14. The VIRUS Emission Line Detection Recipe

    NASA Astrophysics Data System (ADS)

    Gössl, C. A.; Hopp, U.; Köhler, R.; Grupp, F.; Relke, H.; Drory, N.; Gebhardt, K.; Hill, G.; MacQueen, P.

    2007-10-01

    HETDEX, the Hobby-Eberly Telescope Dark Energy Experiment, will measure the imprint of the baryonic acoustic oscillations on the galaxy population at redshifts of 1.8 < z < 3.7 to constrain the nature of dark energy. The survey will be performed over at least 200 deg^2. The tracer population for this blind search will be Ly-α emitting galaxies through their most prominent emission line. The data reduction pipeline will extract these emission line objects from ˜35,000 spectra per exposure (5 million per night, i.e. 500 million in total) while performing astrometric, photometric, and wavelength calibration fully automatically. Here we will present our ideas how to find and classify objects even at low signal-to-noise ratios.

  15. Design, testing, and installation of a high-precision hexapod for the Hobby-Eberly Telescope dark energy experiment (HETDEX)

    NASA Astrophysics Data System (ADS)

    Zierer, Joseph J.; Beno, Joseph H.; Weeks, Damon A.; Soukup, Ian M.; Good, John M.; Booth, John A.; Hill, Gary J.; Rafal, Marc D.

    2012-09-01

    Engineers from The University of Texas at Austin Center for Electromechanics and McDonald Observatory have designed, built, and laboratory tested a high payload capacity, precision hexapod for use on the Hobby-Eberly telescope as part of the HETDEX Wide Field Upgrade (WFU). The hexapod supports the 4200 kg payload which includes the wide field corrector, support structure, and other optical/electronic components. This paper provides a recap of the hexapod actuator mechanical and electrical design including a discussion on the methods used to help determine the actuator travel to prevent the hexapod payload from hitting any adjacent, stationary hardware. The paper describes in detail the tooling and methods used to assemble the full hexapod, including many of the structures and components which are supported on the upper hexapod frame. Additionally, details are provided on the installation of the hexapod onto the new tracker bridge, including design decisions that were made to accommodate the lift capacity of the Hobby- Eberly Telescope dome crane. Laboratory testing results will be presented verifying that the performance goals for the hexapod, including positioning, actuator travel, and speeds have all been achieved. This paper may be of interest to mechanical and electrical engineers responsible for the design and operations of precision hardware on large, ground based telescopes. In summary, the hexapod development cycle from the initial hexapod actuator performance requirements and design, to the deployment and testing on the newly designed HET tracker system is all discussed, including lessons learned through the process.

  16. VizieR Online Data Catalog: Emission-line galaxies from HETDEX pilot survey (Adams+, 2011)

    NASA Astrophysics Data System (ADS)

    Adams, J. J.; Blanc, G. A.; Hill, G. J.; Gebhardt, K.; Drory, N.; Hao, L.; Bender, R.; Byun, J.; Ciardullo, R.; Cornell, M. E.; Finkelstein, S. L.; Fry, A.; Gawiser, E.; Gronwall, C.; Hopp, U.; Jeong, D.; Kelz, A.; Kelzenberg, R.; Komatsu, E.; MacQueen, P. J.; Murphy, J.; Odoms, P. S.; Roth, M.; Schneider, D. P.; Tufts, J. R.; Wilkinson, C. P.

    2011-03-01

    We obtained regular fall/winter/spring dark time observations from 2007 September to 2010 February on the McDonald 2.7m Harlan J. Smith telescope with the Visible Integral-field Replicable Unit Spectrograph Prototype (VIRUS-P). (3 data files).

  17. Hobby-Eberly Telescope Dark Energy Experiment Fiber Optic Testing System

    NASA Astrophysics Data System (ADS)

    Fuller, Lindsay

    2011-01-01

    The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) is a spectroscopic survey that will collect data from nearly one million Lyman-α emitting galaxies at a redshift of 1.8 < z < 3.8 in order to characterize dark energy. To accomplish this, over 33,000 optical fibers will feed light from these galaxies into 150 Visible Integral-Field Replicable Unit Spectrographs (VIRUS), an order of magnitude greater than has been done before. A fiber optic test bench has been constructed at the University of Texas at Austin in order to test the transmission and focal ratio degradation (FRD) of individual fibers at several wavelengths ranging from 350-600nm. Furthermore, the fiber optic bundles are undergoing extensive lifetime tests at the Center for Electromechanics on the university’s research campus which will simulate 10 years of motion on the Hobby-Eberly Telescope.

  18. White Dwarfs in the HET Dark Energy Experiment

    NASA Astrophysics Data System (ADS)

    Castanheira, B. G.; Winget, D. E.; Williams, K.; Montgomery, M. H.; Falcon, R. E.; Hermes, J. J.

    2010-11-01

    In the past decades, large scale surveys have discovered a large number of white dwarfs. For example, the Sloan Digital Sky Survey (SDSS) Data Release 7 [5] lists about 20 000 spectroscopically confirmed new white dwarfs. More than just a number, the new discoveries revealed different flavors of white dwarfs, including a new class of pulsators [7] and a larger percentage of stars with a magnetic field [4]. The HET Dark Energy Experiment (HETDEX) will use the 9.2 m Hobby-Eberly Telescope at McDonald Observatory and a set of 150 spectrographs to map the three-dimensional positions of one million galaxies. The main goal of the survey is to probe dark energy by observing the recent universe (2<=z<=4). However, this unique, magnitude-limited survey (V<=22) will also provide a variety of by-products. We expect to obtain spectra for about 10 000 white dwarfs in the next 3 to 4 years.

  19. Measuring the scatter in the cluster optical richness-mass relation with machine learning

    NASA Astrophysics Data System (ADS)

    Boada, Steven Alvaro

    The distribution of massive clusters of galaxies depends strongly on the total cosmic mass density, the mass variance, and the dark energy equation of state. As such, measures of galaxy clusters can provide constraints on these parameters and even test models of gravity, but only if observations of clusters can lead to accurate estimates of their total masses. Here, we carry out a study to investigate the ability of a blind spectroscopic survey to recover accurate galaxy cluster masses through their line-of- sight velocity dispersions (LOSVD) using probability based and machine learning methods. We focus on the Hobby Eberly Telescope Dark Energy Experiment (HETDEX), which will employ new Visible Integral-Field Replicable Unit Spectrographs (VIRUS), over 420 degree2 on the sky with a 1/4.5 fill factor. VIRUS covers the blue/optical portion of the spectrum (3500 - 5500 A), allowing surveys to measure redshifts for a large sample of galaxies out to z < 0.5 based on their absorption or emission (e.g., [O II], Mg II, Ne V) features. We use a detailed mock galaxy catalog from a semi-analytic model to simulate surveys observed with VIRUS, including: (1) Survey, a blind, HETDEX-like survey with an incomplete but uniform spectroscopic selection function; and (2) Targeted, a survey which targets clusters directly, obtaining spectra of all galaxies in a VIRUS-sized field. For both surveys, we include realistic uncertainties from galaxy magnitude and line-flux limits. We benchmark both surveys against spectroscopic observations with perfect" knowledge of galaxy line-of-sight velocities. With Survey observations, we can recover cluster masses to ˜ 0.1 dex which can be further improved to < 0.1 dex with Targeted observations. This level of cluster mass recovery provides important measurements of the intrinsic scatter in the optical richness-cluster mass relation, and enables constraints on the key cosmological parameter, sigma 8, to < 20%. As a demonstration of the methods developed previously, we present a pilot survey with integral field spectroscopy of ten galaxy clusters optically selected from the Sloan Digital Sky Survey's DR8 at z = 0.2 - 0.3. Eight of the clusters are rich (lambda > 60) systems with total inferred masses (1.58 -17.37) x1014 M (M 200c), and two are poor (lambda < 15) systems with inferred total masses ˜ 0.5 x 1014 M? (M200c ). We use the Mitchell Spectrograph, (formerly the VIRUS-P spectrograph, a prototype of the HETDEX VIRUS instrument) located on the McDonald Observatory 2.7m telescope, to measure spectroscopic redshifts and line-of-sight velocities of the galaxies in and around each cluster, determine cluster membership and derive LOSVDs. We test both a LOSVD-cluster mass scaling relation and a machine learning based approach to infer total cluster mass. After comparing the cluster mass estimates to the literature, we use these independent cluster mass measurements to estimate the absolute cluster mass scale, and intrinsic scatter in the optical richness-mass relationship. We measure the intrinsic scatter in richness at fixed cluster mass to be sigmaM/lambda = 0.27 +/- 0.07 dex in excellent agreement with previous estimates of sigmaM/lambda ˜ 0.2 - 0.3 dex. We discuss the importance of the data used to train the machine learning methods and suggest various strategies to import the accuracy of the bias (offset) and scatter in the optical richness-cluster mass relation. This demonstrates the power of blind spectroscopic surveys such as HETDEX to provide robust cluster mass estimates which can aid in the determination of cosmological parameters and help to calibrate the observable-mass relation for future photometric large area-sky surveys.

  20. DESI and other Dark Energy experiments in the era of neutrino mass measurements

    DOE PAGES

    Font-Ribera, Andreu; McDonald, Patrick; Mostek, Nick; ...

    2014-05-19

    Here we present Fisher matrix projections for future cosmological parameter measurements, including neutrino masses, Dark Energy, curvature, modified gravity, the inflationary perturbation spectrum, non-Gaussianity, and dark radiation. We focus on DESI and generally redshift surveys (BOSS, HETDEX, eBOSS, Euclid, and WFIRST), but also include CMB (Planck) and weak gravitational lensing (DES and LSST) constraints. The goal is to present a consistent set of projections, for concrete experiments, which are otherwise scattered throughout many papers and proposals. We include neutrino mass as a free parameter in most projections, as it will inevitably be relevant $-$ DESI and other experiments can measuremore » the sum of neutrino masses to ~ 0.02 eV or better, while the minimum possible sum is 0.06 eV. We note that constraints on Dark Energy are significantly degraded by the presence of neutrino mass uncertainty, especially when using galaxy clustering only as a probe of the BAO distance scale (because this introduces additional uncertainty in the background evolution after the CMB epoch). Using broadband galaxy power becomes relatively more powerful, and bigger gains are achieved by combining lensing survey constraints with redshift survey constraints. Finally, we do not try to be especially innovative, e.g., with complex treatments of potential systematic errors $-$ these projections are intended as a straightforward baseline for comparison to more detailed analyses.« less

  1. VizieR Online Data Catalog: Polarized point sources in LOTSS-HETDEX (Van Eck+, 2018)

    NASA Astrophysics Data System (ADS)

    van Eck, C. L.; Haverkorn, M.; Alves, M. I. R.; Beck, R.; Best, P.; Carretti, E.; Chyzy, K. T.; Farnes, J. S.; Ferriere, K.; Hardcastle, M. J.; Heald, G.; Horellou, C.; Iacobelli, M.; Jelic, V.; Mulcahy, D. D.; O'Sullivan, S. P.; Polderman, I. M.; Reich, W.; Riseley, C. J.; Rottgering, H.; Schnitzeler, D. H. F. M.; Shimwell, T. W.; Vacca, V.; Vink, J.; White, G. J.

    2018-06-01

    Visibility data taken from LOTSS, imaged in polarization, and had RM synthesis applied. Resulting RM spectra were searched for polarization peaks. Detected peaks that were determined to not be foreground or instrumental effects were collected in this catalog. Source locations (for peak searches) were selected from TGSS-ADR1 (J/A+A/598/A78). Due to overlap between fields, some sources were detected multiple times, as recorded in the Ndet column. Polarized sources were cross-matched with the high-resolution LOTSS images (Shimwell+, in prep), and WISE and PanSTARRS images, which were used to determine the source classification and morphology. (1 data file).

  2. Direct Shear Mapping: Prospects for Weak Lensing Studies of Individual Galaxy-Galaxy Lensing Systems

    NASA Astrophysics Data System (ADS)

    de Burgh-Day, C. O.; Taylor, E. N.; Webster, R. L.; Hopkins, A. M.

    2015-11-01

    Using both a theoretical and an empirical approach, we have investigated the frequency of low redshift galaxy-galaxy lensing systems in which the signature of 3D weak lensing might be directly detectable. We find good agreement between these two approaches. Using data from the Galaxy and Mass Assembly redshift survey we estimate the frequency of detectable weak lensing at low redshift. We find that below a redshift of z ~ 0.6, the probability of a galaxy being weakly lensed by γ ⩾ 0.02 is ~ 0.01. We have also investigated the feasibility of measuring the scatter in the M * - Mh relation using shear statistics. We estimate that for a shear measurement error of Δγ = 0.02 (consistent with the sensitivity of the Direct Shear Mapping technique), with a sample of ~50,000 spatially and spectrally resolved galaxies, the scatter in the M * - Mh relation could be measured. While there are currently no existing IFU surveys of this size, there are upcoming surveys that will provide this data (e.g The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX), surveys with Hector, and the Square Kilometre Array (SKA)).

  3. Mass production of volume phase holographic gratings for the VIRUS spectrograph array

    NASA Astrophysics Data System (ADS)

    Chonis, Taylor S.; Frantz, Amy; Hill, Gary J.; Clemens, J. Christopher; Lee, Hanshin; Tuttle, Sarah E.; Adams, Joshua J.; Marshall, J. L.; DePoy, D. L.; Prochaska, Travis

    2014-07-01

    The Visible Integral-field Replicable Unit Spectrograph (VIRUS) is a baseline array of 150 copies of a simple, fiber-fed integral field spectrograph that will be deployed on the Hobby-Eberly Telescope (HET). VIRUS is the first optical astronomical instrument to be replicated on an industrial scale, and represents a relatively inexpensive solution for carrying out large-area spectroscopic surveys, such as the HET Dark Energy Experiment (HETDEX). Each spectrograph contains a volume phase holographic (VPH) grating with a 138 mm diameter clear aperture as its dispersing element. The instrument utilizes the grating in first-order for 350 < λ (nm) < 550. Including witness samples, a suite of 170 VPH gratings has been mass produced for VIRUS. Here, we present the design of the VIRUS VPH gratings and a discussion of their mass production. We additionally present the design and functionality of a custom apparatus that has been used to rapidly test the first-order diffraction efficiency of the gratings for various discrete wavelengths within the VIRUS spectral range. This device has been used to perform both in-situ tests to monitor the effects of adjustments to the production prescription as well as to carry out the final acceptance tests of the gratings' diffraction efficiency. Finally, we present the as-built performance results for the entire suite of VPH gratings.

  4. A new control system hardware architecture for the Hobby-Eberly Telescope prime focus instrument package

    NASA Astrophysics Data System (ADS)

    Ramiller, Chuck; Taylor, Trey; Rafferty, Tom H.; Cornell, Mark E.; Rafal, Marc; Savage, Richard

    2010-07-01

    The Hobby-Eberly Telescope (HET) will be undergoing a major upgrade as a precursor to the HET Dark Energy Experiment (HETDEX‡). As part of this upgrade, the Prime Focus Instrument Package (PFIP) will be replaced with a new design that supports the HETDEX requirements along with the existing suite of instruments and anticipated future additions. This paper describes the new PFIP control system hardware plus the physical constraints and other considerations driving its design. Because of its location at the top end of the telescope, the new PFIP is essentially a stand-alone remote automation island containing over a dozen subsystems. Within the PFIP, motion controllers and modular IO systems are interconnected using a local Controller Area Network (CAN) bus and the CANOpen messaging protocol. CCD cameras that are equipped only with USB 2.0 interfaces are connected to a local Ethernet network via small microcontroller boards running embedded Linux. Links to ground-level systems pass through a 100 m cable bundle and use Ethernet over fiber optic cable exclusively; communications are either direct or through Ethernet/CAN gateways that pass CANOpen messages transparently. All of the control system hardware components are commercially available, designed for rugged industrial applications, and rated for extended temperature operation down to -10 °C.

  5. Probing the Build-Up of Quiescent Galaxies at z>3

    NASA Astrophysics Data System (ADS)

    Finkelstein, Steven

    We propose to perform the most robust investigation to date into the evolution of massive quiescent and star-forming galaxies at z > 3, at a time when the universe was less than two billion years old. The build-up of quiescent galaxies in particular is poorly understood, primarily due to large Poisson and cosmic variance issues that have plagued previous studies that probed small volumes, leading to a disagreement on the quiescent fraction by a factor of >3 in the literature. Our proposed work is only now possible due to a new legacy survey led by our team: the Spitzer-HETDEX Exploratory Large Area Survey (SHELA), which is imaging a 23 deg^2 area of the sky at optical, and near, mid and far-infrared, and X-ray wavelengths. In particular, the wide area coverage of the Spitzer/IRAC data allows us to be sensitive to massive galaxies at very high redshifts, the Herschel data allows us to rule out lower-redshift counterparts, and the XMM-Newton data allows us to remove quasar contaminants from our sample. This survey covers a volume >14X that of the largest previous survey for quiescent galaxies at z=3.5, and ~6X larger than that of the largest previous survey for star-forming galaxies at z=4. All of these data exist in the region soon to be observed by the Hobby Eberly Telescope Dark Energy Experiment (HETDEX), which will provide high-precision measures of halo masses and local density at z~3. Using this exquisite multi-wavelength dataset, we will measure the abundance of massive quiescent galaxies at z ~ 3-5, and, combining with measures of the halo masses and environment, compare properties of quiescent galaxies to star-forming galaxies to investigate the physical cause behind the quenching. We will also investigate the onset of quenching in star-forming galaxies in two ways, first by studying the relation between star formation rate and stellar mass, to search for a break in the typically-linear relation at high masses, and second by constraining the feedback mechanisms regulating bright galaxies by measuring the evolution of the shape of the bright end of the rest-frame ultraviolet luminosity function. In today's universe, more than 90% of massive galaxies are quiescent. When and why these galaxies stopped forming their stars is a key focus of NASA's Cosmic Origins program. Our unique dataset, grounded by NASA's Spitzer and Hershel imaging, will provide the most robust investigation into the rise of massive quiescent galaxies in the early universe, providing answers to questions about the formation of the most massive galaxies today. Finally, we will release our reduced imaging and photometric catalogs to the community, leaving a strong legacy impact from this proposed work.

  6. First imaging results from Apertif, a phased-array feed for WSRT

    NASA Astrophysics Data System (ADS)

    Adams, Elizabeth A.; Adebahr, Björn; de Blok, Willem J. G.; Hess, Kelley M.; Hut, Boudewijn; Lucero, Danielle M.; Maccagni, Filippo; Morganti, Raffaella; Oosterloo, Tom; Staveley-Smith, Lister; van der Hulst, Thijs; Verheijen, Marc; Verstappen, Joris

    2017-01-01

    Apertif is a phased-array feed for the Westerbork Synthesis Radio Telescope (WSRT), increasing the field of view of the telescope by a factor of twenty-five. In 2017, three legacy surveys will commence: a shallow imaging survey, a medium-deep imaging survey, and a pulsars and fast transients survey. The medium-deep imaging survey will include coverage of the northern Herschel Atlas field, the CVn region, HetDex, and the Perseus-Pisces supercluster. The shallow imaging survey increases overlap with HetDex, has expanded coverage of the Perseus-Pisces supercluster, and includes part of the Zone of Avoidance. Both imaging surveys are coordinating with MaNGA and will have WEAVE follow-up. The imaging surveys will be done in full polarization over the frequency range 1130-1430 MHz, which corresponds to redshifts of z=0-0.256 for neutral hydrogen (HI). The spectral resolution is 12.2 kHz, or an HI velocity resolution of 2.6 km/s at z=0 and 3.2 km/s at z=0.256. The full resolution images will have a beam size of 15"x15"/sin(declination), and tapered data products (i.e., 30" resolution images) will also be available. The shallow survey will cover ~3500 square degrees with a four-sigma HI imaging sensitivity of 2.5x10^20 atoms cm^-2 (20 km/s linewidth) at the highest resolution and a continuum sensitivity of 15 uJy/beam (11 uJy/beam for polarization data). The current plan calls for the medium deep survey to cover 450 square degrees and provide an HI imaging sensitivity of 1.0x10^20 atoms cm^-2 at the highest resolution and a continuum sensitivity of 6 uJy/beam, close to the confusion limit (4 uJy/beam for polarization data, not confusion limited). Up-to-date information on Apertif and the planned surveys can be found at: http://www.apertif.nl.Commissioning of the Apertif instrument is currently underway. Here we present first results from the image commissioning, including the detection of HI absorption plus continuum and HI imaging. These results highlight the data quality that will be achieved for the surveys.

  7. Wind loading analysis and strategy for deflection reduction on HET wide field upgrade

    NASA Astrophysics Data System (ADS)

    South, Brian J.; Soukup, Ian M.; Worthington, Michael S.; Zierer, Joseph J.; Booth, John A.; Good, John M.

    2010-07-01

    Wind loading can be a detrimental source of vibration and deflection for any large terrestrial optical telescope. The Hobby-Eberly Telescope* (HET) in the Davis Mountains of West Texas is undergoing a Wide Field Upgrade (WFU) in support of the Dark Energy Experiment (HETDEX) that will greatly increase the size of the instrumentation subjected to operating wind speeds of up to 20.1 m/s (45 mph). A non-trivial consideration for this telescope (or others) is to quantify the wind loads and resulting deflections of telescope structures induced under normal operating conditions so that appropriate design changes can be made. A quasi-static computational fluid dynamics (CFD) model was generated using wind speeds collected on-site as inputs to characterize dynamic wind forces on telescope structures under various conditions. The CFD model was refined until predicted wind speed and direction inside the dome agreed with experimental data. The dynamic wind forces were then used in static loading analysis to determine maximum deflections under typical operating conditions. This approach also allows for exploration of operating parameters without impact to the observation schedule of the telescope. With optimum combinations of parameters (i.e. dome orientation, tracker position, and louver deployment), deflections due to current wind conditions can be significantly reduced. Furthermore, the upper limit for operating wind speed could be increased, provided these parameters are monitored closely. This translates into increased image quality and observing time.

  8. Direct shear mapping - a new weak lensing tool

    NASA Astrophysics Data System (ADS)

    de Burgh-Day, C. O.; Taylor, E. N.; Webster, R. L.; Hopkins, A. M.

    2015-08-01

    We have developed a new technique called direct shear mapping (DSM) to measure gravitational lensing shear directly from observations of a single background source. The technique assumes the velocity map of an unlensed, stably rotating galaxy will be rotationally symmetric. Lensing distorts the velocity map making it asymmetric. The degree of lensing can be inferred by determining the transformation required to restore axisymmetry. This technique is in contrast to traditional weak lensing methods, which require averaging an ensemble of background galaxy ellipticity measurements, to obtain a single shear measurement. We have tested the efficacy of our fitting algorithm with a suite of systematic tests on simulated data. We demonstrate that we are in principle able to measure shears as small as 0.01. In practice, we have fitted for the shear in very low redshift (and hence unlensed) velocity maps, and have obtained null result with an error of ±0.01. This high-sensitivity results from analysing spatially resolved spectroscopic images (i.e. 3D data cubes), including not just shape information (as in traditional weak lensing measurements) but velocity information as well. Spirals and rotating ellipticals are ideal targets for this new technique. Data from any large Integral Field Unit (IFU) or radio telescope is suitable, or indeed any instrument with spatially resolved spectroscopy such as the Sydney-Australian-Astronomical Observatory Multi-Object Integral Field Spectrograph (SAMI), the Atacama Large Millimeter/submillimeter Array (ALMA), the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) and the Square Kilometer Array (SKA).

  9. The LOFAR Two-metre Sky Survey. I. Survey description and preliminary data release

    NASA Astrophysics Data System (ADS)

    Shimwell, T. W.; Röttgering, H. J. A.; Best, P. N.; Williams, W. L.; Dijkema, T. J.; de Gasperin, F.; Hardcastle, M. J.; Heald, G. H.; Hoang, D. N.; Horneffer, A.; Intema, H.; Mahony, E. K.; Mandal, S.; Mechev, A. P.; Morabito, L.; Oonk, J. B. R.; Rafferty, D.; Retana-Montenegro, E.; Sabater, J.; Tasse, C.; van Weeren, R. J.; Brüggen, M.; Brunetti, G.; Chyży, K. T.; Conway, J. E.; Haverkorn, M.; Jackson, N.; Jarvis, M. J.; McKean, J. P.; Miley, G. K.; Morganti, R.; White, G. J.; Wise, M. W.; van Bemmel, I. M.; Beck, R.; Brienza, M.; Bonafede, A.; Calistro Rivera, G.; Cassano, R.; Clarke, A. O.; Cseh, D.; Deller, A.; Drabent, A.; van Driel, W.; Engels, D.; Falcke, H.; Ferrari, C.; Fröhlich, S.; Garrett, M. A.; Harwood, J. J.; Heesen, V.; Hoeft, M.; Horellou, C.; Israel, F. P.; Kapińska, A. D.; Kunert-Bajraszewska, M.; McKay, D. J.; Mohan, N. R.; Orrú, E.; Pizzo, R. F.; Prandoni, I.; Schwarz, D. J.; Shulevski, A.; Sipior, M.; Smith, D. J. B.; Sridhar, S. S.; Steinmetz, M.; Stroe, A.; Varenius, E.; van der Werf, P. P.; Zensus, J. A.; Zwart, J. T. L.

    2017-02-01

    The LOFAR Two-metre Sky Survey (LoTSS) is a deep 120-168 MHz imaging survey that will eventually cover the entire northern sky. Each of the 3170 pointings will be observed for 8 h, which, at most declinations, is sufficient to produce 5″ resolution images with a sensitivity of 100 μJy/beam and accomplish the main scientific aims of the survey, which are to explore the formation and evolution of massive black holes, galaxies, clusters of galaxies and large-scale structure. Owing to the compact core and long baselines of LOFAR, the images provide excellent sensitivity to both highly extended and compact emission. For legacy value, the data are archived at high spectral and time resolution to facilitate subarcsecond imaging and spectral line studies. In this paper we provide an overview of the LoTSS. We outline the survey strategy, the observational status, the current calibration techniques, a preliminary data release, and the anticipated scientific impact. The preliminary images that we have released were created using a fully automated but direction-independent calibration strategy and are significantly more sensitive than those produced by any existing large-area low-frequency survey. In excess of 44 000 sources are detected in the images that have a resolution of 25″, typical noise levels of less than 0.5 mJy/beam, and cover an area of over 350 square degrees in the region of the HETDEX Spring Field (right ascension 10h45m00s to 15h30m00s and declination 45°00'00″ to 57°00'00″). The catalogue (full Table 3) is only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/598/A104

  10. HETDEX tracker control system design and implementation

    NASA Astrophysics Data System (ADS)

    Beno, Joseph H.; Hayes, Richard; Leck, Ron; Penney, Charles; Soukup, Ian

    2012-09-01

    To enable the Hobby-Eberly Telescope Dark Energy Experiment, The University of Texas at Austin Center for Electromechanics and McDonald Observatory developed a precision tracker and control system - an 18,000 kg robot to position a 3,100 kg payload within 10 microns of a desired dynamic track. Performance requirements to meet science needs and safety requirements that emerged from detailed Failure Modes and Effects Analysis resulted in a system of 13 precision controlled actuators and 100 additional analog and digital devices (primarily sensors and safety limit switches). Due to this complexity, demanding accuracy requirements, and stringent safety requirements, two independent control systems were developed. First, a versatile and easily configurable centralized control system that links with modeling and simulation tools during the hardware and software design process was deemed essential for normal operation including motion control. A second, parallel, control system, the Hardware Fault Controller (HFC) provides independent monitoring and fault control through a dedicated microcontroller to force a safe, controlled shutdown of the entire system in the event a fault is detected. Motion controls were developed in a Matlab-Simulink simulation environment, and coupled with dSPACE controller hardware. The dSPACE real-time operating system collects sensor information; motor commands are transmitted over a PROFIBUS network to servo amplifiers and drive motor status is received over the same network. To interface the dSPACE controller directly to absolute Heidenhain sensors with EnDat 2.2 protocol, a custom communication board was developed. This paper covers details of operational control software, the HFC, algorithms, tuning, debugging, testing, and lessons learned.

  11. Sequentially Simulated Outcomes: Kind Experience versus Nontransparent Description

    ERIC Educational Resources Information Center

    Hogarth, Robin M.; Soyer, Emre

    2011-01-01

    Recently, researchers have investigated differences in decision making based on description and experience. We address the issue of when experience-based judgments of probability are more accurate than are those based on description. If description is well understood ("transparent") and experience is misleading ("wicked"), it…

  12. The HETDEX pilot survey. V. The physical origin of Lyα emitters probed by near-infrared spectroscopy

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Song, Mimi; Finkelstein, Steven L.; Gebhardt, Karl

    2014-08-10

    We present the results from a Very Large Telescope/SINFONI and Keck/NIRSPEC near-infrared spectroscopic survey of 16 Lyα emitters (LAEs) at z = 2.1-2.5 in the COSMOS and GOODS-N fields discovered from the Hobby Eberly Telescope Dark Energy Experiment Pilot Survey. We detect rest-frame optical nebular lines (Hα and/or [O III] λ5007) for 10 of the LAEs and measure physical properties, including the star formation rate (SFR), gas-phase metallicity, gas mass fraction, and Lyα velocity offset. We find that LAEs may lie below the mass-metallicity relation for continuum-selected star-forming galaxies at the same redshift. The LAEs all show velocity shifts ofmore » Lyα relative to the systemic redshift ranging between +85 and +296 km s{sup –1} with a mean of +180 km s{sup –1}. This value is smaller than measured for continuum-selected star-forming galaxies at similar redshifts. The Lyα velocity offsets show a moderate correlation with the measured SFR (2.5σ), but no significant correlations are seen with the SFR surface density, specific SFR, stellar mass, or dynamical mass (≲1.5σ). Exploring the role of dust, kinematics of the interstellar medium (ISM), and geometry on the escape of Lyα photons, we find no signature of selective quenching of resonantly scattered Lyα photons. However, we also find no evidence that a clumpy ISM is enhancing the Lyα equivalent width. Our results suggest that the low metallicity in LAEs may be responsible for yielding an environment with a low neutral hydrogen column density and less dust, easing the escape of Lyα photons over that in continuum-selected star-forming galaxies.« less

  13. Extended experience benefits spatial mental model development with route but not survey descriptions.

    PubMed

    Brunyé, Tad T; Taylor, Holly A

    2008-02-01

    Spatial descriptions symbolically represent environmental information through language and are written in two primary perspectives: survey, analogous to viewing a map, and route, analogous to navigation. Readers of survey or route descriptions form abstracted perspective flexible representations of the described environment, or spatial mental models. The present two experiments investigated the maintenance of perspective in spatial mental models as a function of description perspective and experience (operationalized through repetition), and as reflected in self-paced reading times. Experiment 1 involved studying survey and route descriptions either once or three times, then completing map drawing and true/false statement verification. Results demonstrated that spatial mental models are readily formed with survey descriptions, but require relatively more experience with route descriptions; further, some limited evidence suggests perspective dependence in spatial mental models, even following extended experience. Experiment 2 measured self-paced reading during three successive description presentations. Average reading times over the three presentations reduced more for survey relative to route descriptions, and there was no evidence for perspective specificity in resulting spatial mental models. This supports Experiment 1 findings demonstrating the relatively time-consuming nature of acquiring spatial mental models from route, but not survey descriptions. Results are discussed with regard to developmental, discourse processing, and spatial mental model theory.

  14. Data catalog of satellite experiments

    NASA Technical Reports Server (NTRS)

    1971-01-01

    This catalog is divided into three sections: data description contains descriptions of data available at or through NSSDC as well as descriptions of the experiments and spacecraft from which the data originated; and supporting data contains brief descriptions of space environment models and programs distributed by NSSDC. Section 3 is a series of indexes that contain: (1) a listing of all spacecraft, experiment, and data descriptions presented in Section 1 plus tables indicating the period for which each spacecraft was operational; (2) an index of all spacecraft described here, identified by common names and alternate names; (3) a listing of the original experiment institutions for all experiments described; (4) a listing of the investigators associated with the experiments and their current affiliations; and (5) an index of all experiments sorted by phenomenon measured.

  15. Data catalog of satellite experiments

    NASA Technical Reports Server (NTRS)

    1973-01-01

    The availability of space science data, a description of the data, and a description of the services supplied by the National Space Science Data Center (NSSDC) is presented. A series of cumulative indexes that reference the data descriptions contain: (1) a chronological listing of all spacecraft, experiments, and data descriptions; (2) an index of all spacecraft described, identified by common names and alternate names; (3) a listing of the original experiment institutions for experiments described; (4) a listing of the investigators associated with the experiments and their current affiliations; and (5) two displays of information about experiment data coverage for fields and particle data and a listing of all experiments sorted by phenomenon measured.

  16. The Clustering of High-Redshift (2.9 < z < 5.4) Quasars in SDSS Stripe 82

    NASA Astrophysics Data System (ADS)

    Timlin, John; Ross, Nicolas; Richards, Gordon; Myers, Adam; Bauer, Franz Erik; Lacy, Mark; Schneider, Donald; Wollack, Edward; Zakamska, Nadia

    2018-01-01

    We present the data from the Spitzer IRAC Equatorial Survey (SpIES) along with our first high-redshift (2.9

  17. Experimenting with Impacts in a Conceptual Physics or Descriptive Astronomy Laboratory

    ERIC Educational Resources Information Center

    LoPresto, Michael C.

    2016-01-01

    What follows is a description of the procedure for and results of a simple experiment on the formation of impact craters designed for the laboratory portions of lower mathematical-level general education science courses such as conceptual physics or descriptive astronomy. The experiment provides necessary experience with data collection and…

  18. Reproducible computational biology experiments with SED-ML--the Simulation Experiment Description Markup Language.

    PubMed

    Waltemath, Dagmar; Adams, Richard; Bergmann, Frank T; Hucka, Michael; Kolpakov, Fedor; Miller, Andrew K; Moraru, Ion I; Nickerson, David; Sahle, Sven; Snoep, Jacky L; Le Novère, Nicolas

    2011-12-15

    The increasing use of computational simulation experiments to inform modern biological research creates new challenges to annotate, archive, share and reproduce such experiments. The recently published Minimum Information About a Simulation Experiment (MIASE) proposes a minimal set of information that should be provided to allow the reproduction of simulation experiments among users and software tools. In this article, we present the Simulation Experiment Description Markup Language (SED-ML). SED-ML encodes in a computer-readable exchange format the information required by MIASE to enable reproduction of simulation experiments. It has been developed as a community project and it is defined in a detailed technical specification and additionally provides an XML schema. The version of SED-ML described in this publication is Level 1 Version 1. It covers the description of the most frequent type of simulation experiments in the area, namely time course simulations. SED-ML documents specify which models to use in an experiment, modifications to apply on the models before using them, which simulation procedures to run on each model, what analysis results to output, and how the results should be presented. These descriptions are independent of the underlying model implementation. SED-ML is a software-independent format for encoding the description of simulation experiments; it is not specific to particular simulation tools. Here, we demonstrate that with the growing software support for SED-ML we can effectively exchange executable simulation descriptions. With SED-ML, software can exchange simulation experiment descriptions, enabling the validation and reuse of simulation experiments in different tools. Authors of papers reporting simulation experiments can make their simulation protocols available for other scientists to reproduce the results. Because SED-ML is agnostic about exact modeling language(s) used, experiments covering models from different fields of research can be accurately described and combined.

  19. Description of the Large-Gap Magnetic Suspension System (LGMSS) ground based experiment

    NASA Technical Reports Server (NTRS)

    Groom, Nelson J.

    1991-01-01

    An overview of the Large Gap Magnetic Suspension System (LGMSS) ground-based experiment is provided. A description of the experiment, as originally defined, and the experiment objectives and potential applications of the technology resulting from the experiment are presented. Also, the results of two studies which were conducted to investigate the feasibility of implementing the experiment are presented and discussed. Finally, a description of the configuration which was selected for the experiment is described, and a summary of the paper is presented.

  20. The Development of Replicated Optical Integral Field Spectrographs and their Application to the Study of Lyman-alpha Emission at Moderate Redshifts

    NASA Astrophysics Data System (ADS)

    Chonis, Taylor Steven

    In the upcoming era of extremely large ground-based astronomical telescopes, the design of wide-field spectroscopic survey instrumentation has become increasingly complex due to the linear growth of instrument pupil size with telescope diameter for a constant spectral resolving power. The upcoming Visible Integral field Replicable Unit Spectrograph (VIRUS), a baseline array of 150 copies of a simple integral field spectrograph that will be fed by 3:36 x 104 optical fibers on the upgraded Hobby-Eberly Telescope (HET) at McDonald Observatory, represents one of the first uses of large-scale replication to break the relationship between instrument pupil size and telescope diameter. By dividing the telescope's field of view between a large number of smaller and more manageable instruments, the total information grasp of a traditional monolithic survey spectrograph can be achieved at a fraction of the cost and engineering complexity. To highlight the power of this method, VIRUS will execute the HET Dark Energy Experiment (HETDEX) and survey & 420 degrees2 of sky to an emission line flux limit of ˜ 10-17 erg s-1 cm -2 to detect ˜ 106 Lyman-alpha emitting galaxies (LAEs) as probes of large-scale structure at redshifts of 1:9 < z < 3:5. HETDEX will precisely measure the evolution of dark energy at that epoch, and will simultaneously amass an LAE sample that will be unprecedented for extragalactic astrophysics at the redshifts of interest. Large-scale replication has clear advantages to increasing the total information grasp of a spectrograph, but there are also challenges. In this dissertation, two of these challenges with respect to VIRUS are detailed. First, the VIRUS cryogenic system is discussed, specifically the design and tests of a novel thermal connector and internal camera croygenic components that link the 150 charge-coupled device detectors to the instrument's liquid nitrogen distribution system. Second, the design, testing, and mass production of the suite of volume phase holographic (VPH) diffraction gratings for VIRUS is presented, which highlights the challenge and success associated with producing of a very large number of highly customized optical elements whose performance is crucial to meeting the efficiency requirements of the spectrograph system. To accommodate VIRUS, the HET is undergoing a substantial wide-field upgrade to increase its field of view to 22' in diameter. The previous HET facility Low Resolution Spectrograph (LRS), which was directly fed by the telescope's previous spherical aberration corrector, must be removed from the prime focus instrument package as a result of the telescope upgrades and instead be fiber-coupled to the telescope focal plane. For a similar cost as modifying LRS to accommodate these changes, a new second generation instrument (LRS2) will be based on the VIRUS unit spectrograph. The design, operational concept, construction, and laboratory testing and characterization of LRS2 is the primary focus of this dissertation, which highlights the benefits of leveraging the large engineering investment, economies of scale, and laboratory and observatory infrastructure associated with the massively replicated VIRUS instrument. LRS2 will provide integral field spectroscopy for a seeing-limited field of 12" x 6". The multiplexed VIRUS framework facilitates broad wavelength coverage from 370 nm to 1.0 mum spread between two dual-channel spectrographs at a moderate spectral resolving power of R ≈ 2000. The design departures from VIRUS are presented, including the novel integral field unit, VPH grism dispersers, and various optical changes for accommodating the broadband wavelength coverage. Laboratory testing has verified that LRS2 largely meets its image quality specification and is nearly ready for delivery to the HET where its final verification and validation tasks will be executed. LRS2 will enable the continuation of most legacy LRS science programs and provide improved capability for future investigations. (Abstract shortened by ProQuest.).

  1. Selecting foils for identification lineups: matching suspects or descriptions?

    PubMed

    Tunnicliff, J L; Clark, S E

    2000-04-01

    Two experiments directly compare two methods of selecting foils for identification lineups. The suspect-matched method selects foils based on their match to the suspect, whereas the description-matched method selects foils based on their match to the witness's description of the perpetrator. Theoretical analyses and previous results predict an advantage for description-matched lineups both in terms of correctly identifying the perpetrator and minimizing false identification of innocent suspects. The advantage for description-matched lineups should be particularly pronounced if the foils selected in suspect-matched lineups are too similar to the suspect. In Experiment 1, the lineups were created by trained police officers, and in Experiment 2, the lineups were constructed by undergraduate college students. The results of both experiments showed higher suspect-to-foil similarity for suspect-matched lineups than for description-matched lineups. However, neither experiment showed a difference in correct or false identification rates. Both experiments did, however, show that there may be an advantage for suspect-matched lineups in terms of no-pick and rejection responses. From these results, the endorsement of one method over the other seems premature.

  2. Reproducible computational biology experiments with SED-ML - The Simulation Experiment Description Markup Language

    PubMed Central

    2011-01-01

    Background The increasing use of computational simulation experiments to inform modern biological research creates new challenges to annotate, archive, share and reproduce such experiments. The recently published Minimum Information About a Simulation Experiment (MIASE) proposes a minimal set of information that should be provided to allow the reproduction of simulation experiments among users and software tools. Results In this article, we present the Simulation Experiment Description Markup Language (SED-ML). SED-ML encodes in a computer-readable exchange format the information required by MIASE to enable reproduction of simulation experiments. It has been developed as a community project and it is defined in a detailed technical specification and additionally provides an XML schema. The version of SED-ML described in this publication is Level 1 Version 1. It covers the description of the most frequent type of simulation experiments in the area, namely time course simulations. SED-ML documents specify which models to use in an experiment, modifications to apply on the models before using them, which simulation procedures to run on each model, what analysis results to output, and how the results should be presented. These descriptions are independent of the underlying model implementation. SED-ML is a software-independent format for encoding the description of simulation experiments; it is not specific to particular simulation tools. Here, we demonstrate that with the growing software support for SED-ML we can effectively exchange executable simulation descriptions. Conclusions With SED-ML, software can exchange simulation experiment descriptions, enabling the validation and reuse of simulation experiments in different tools. Authors of papers reporting simulation experiments can make their simulation protocols available for other scientists to reproduce the results. Because SED-ML is agnostic about exact modeling language(s) used, experiments covering models from different fields of research can be accurately described and combined. PMID:22172142

  3. Skylab experiments. Volume 2: Remote sensing of earth resources

    NASA Technical Reports Server (NTRS)

    1973-01-01

    This volume covers the broad area of earth resources in which Skylab experiments will be performed. A brief description of the Skylab program, its objectives, and vehicles is included. Section 1 introduces the concept and historical significance of remote sensing, and discusses the major scientific considerations involved in remotely sensing the earth's resources. Sections 2 through 6 provide a description of the individual earth resource sensors and experiments to be performed. Each description includes a discussion of the experiment background and scientific objectives, the equipment involved, and a discussion of significant experiment performance areas.

  4. Spectral Energy Distribution Fitting of Hetdex Pilot Survey Ly-alpha Emitters in Cosmos and Goods-N

    NASA Technical Reports Server (NTRS)

    Hagen, Alex; Ciardullo, Robin; Cronwall, Caryl; Acquaviva, Viviana; Bridge, Joanna; Zeimann, Gregory R.; Blanc, Guillermo; Bond, Nicholas; Finkelstein, Steven L.; Song, Mimi; hide

    2014-01-01

    We use broadband photometry extending from the rest-frame UV to the near-IR to fit the individual spectral energy distributions of 63 bright (L(Ly-alpha) greater than 10(exp 43) erg s(exp -1) Ly-alpha emitting galaxies (LAEs) in the redshift range 1.9 less than z less than 3.6. We find that these LAEs are quite heterogeneous, with stellar masses that span over three orders of magnitude, from 7.5 greater than logM/solar mass less than 10.5. Moreover, although most LAEs have small amounts of extinction, some high-mass objects have stellar reddenings as large as E(B - V ) is approximately 0.4. Interestingly, in dusty objects the optical depths for Ly-alpha and the UV continuum are always similar, indicating that Lya photons are not undergoing many scatters before escaping their galaxy. In contrast, the ratio of optical depths in low-reddening systems can vary widely, illustrating the diverse nature of the systems. Finally, we show that in the star-formation-rate-log-mass diagram, our LAEs fall above the "main-sequence" defined by z is approximately 3 continuum selected star-forming galaxies. In this respect, they are similar to submillimeter-selected galaxies, although most LAEs have much lower mass.

  5. Does the Sole Description of a Tax Authority Affect Tax Evasion? - The Impact of Described Coercive and Legitimate Power

    PubMed Central

    Hartl, Barbara; Hofmann, Eva; Gangl, Katharina; Hartner-Tiefenthaler, Martina; Kirchler, Erich

    2015-01-01

    Following the classic economic model of tax evasion, taxpayers base their tax decisions on economic determinants, like fine rate and audit probability. Empirical findings on the relationship between economic key determinants and tax evasion are inconsistent and suggest that taxpayers may rather rely on their beliefs about tax authority’s power. Descriptions of the tax authority’s power may affect taxpayers’ beliefs and as such tax evasion. Experiment 1 investigates the impact of fines and beliefs regarding tax authority’s power on tax evasion. Experiments 2-4 are conducted to examine the effect of varying descriptions about a tax authority’s power on participants’ beliefs and respective tax evasion. It is investigated whether tax evasion is influenced by the description of an authority wielding coercive power (Experiment 2), legitimate power (Experiment 3), and coercive and legitimate power combined (Experiment 4). Further, it is examined whether a contrast of the description of power (low to high power; high to low power) impacts tax evasion (Experiments 2-4). Results show that the amount of fine does not impact tax payments, whereas participants’ beliefs regarding tax authority’s power significantly shape compliance decisions. Descriptions of high coercive power as well as high legitimate power affect beliefs about tax authority’s power and positively impact tax honesty. This effect still holds if both qualities of power are applied simultaneously. The contrast of descriptions has little impact on tax evasion. The current study indicates that descriptions of the tax authority, e.g., in information brochures and media reports, have more influence on beliefs and tax payments than information on fine rates. Methodically, these considerations become particularly important when descriptions or vignettes are used besides objective information. PMID:25923770

  6. Does the sole description of a tax authority affect tax evasion?--the impact of described coercive and legitimate power.

    PubMed

    Hartl, Barbara; Hofmann, Eva; Gangl, Katharina; Hartner-Tiefenthaler, Martina; Kirchler, Erich

    2015-01-01

    Following the classic economic model of tax evasion, taxpayers base their tax decisions on economic determinants, like fine rate and audit probability. Empirical findings on the relationship between economic key determinants and tax evasion are inconsistent and suggest that taxpayers may rather rely on their beliefs about tax authority's power. Descriptions of the tax authority's power may affect taxpayers' beliefs and as such tax evasion. Experiment 1 investigates the impact of fines and beliefs regarding tax authority's power on tax evasion. Experiments 2-4 are conducted to examine the effect of varying descriptions about a tax authority's power on participants' beliefs and respective tax evasion. It is investigated whether tax evasion is influenced by the description of an authority wielding coercive power (Experiment 2), legitimate power (Experiment 3), and coercive and legitimate power combined (Experiment 4). Further, it is examined whether a contrast of the description of power (low to high power; high to low power) impacts tax evasion (Experiments 2-4). Results show that the amount of fine does not impact tax payments, whereas participants' beliefs regarding tax authority's power significantly shape compliance decisions. Descriptions of high coercive power as well as high legitimate power affect beliefs about tax authority's power and positively impact tax honesty. This effect still holds if both qualities of power are applied simultaneously. The contrast of descriptions has little impact on tax evasion. The current study indicates that descriptions of the tax authority, e.g., in information brochures and media reports, have more influence on beliefs and tax payments than information on fine rates. Methodically, these considerations become particularly important when descriptions or vignettes are used besides objective information.

  7. Pristine Inner Experience and Descriptive Experience Sampling: Implications for Psychology

    PubMed Central

    Lapping-Carr, Leiszle R.; Heavey, Christopher L.

    2017-01-01

    Pristine inner experience is that which is directly present in awareness before it is distorted by attempts at observation or interpretation. Many psychological methods, including most introspective methods, attempt to measure some aspect of pristine inner experience (thoughts, feelings, mental imagery, sensations, etc.). We believe, however, that these methods produce unspecifiable combinations of pristine inner experience, beliefs about the self, beliefs about what inner experience should be like, inaccurate recollections, miscommunications, and other confounding influences. We argue that descriptive experience sampling (DES) can produce high fidelity descriptions of pristine inner experience. These descriptions are used to create idiographic profiles, carefully crafted, in-depth characterizations of the pristine inner experience of individuals. We believe these profiles, because they are built from moments apprehended via a method that confronts the challenges inherent in examining inner experience, are uniquely valuable in advancing the science of inner experience and psychology broadly. For example, DES observations raise important questions about the veracity of results gathered via questionnaires and other introspective methods, like casual introspection. DES findings also provide high fidelity phenomenological data that can be useful for those developing psychological theories, such as theories of emotional processing. Additionally, DES procedures may allow clinicians and clients to practice valuable skills, like bracketing presuppositions and attending to internal experiences. This paper will describe difficulties inherent in the study of pristine inner experience and discuss implications of high fidelity descriptions of pristine inner experience for psychological research, theory development, and clinical practice. PMID:29312047

  8. The 30/20 GHz flight experiment system, phase 2. Volume 2: Experiment system description

    NASA Technical Reports Server (NTRS)

    Bronstein, L.; Kawamoto, Y.; Ribarich, J. J.; Scope, J. R.; Forman, B. J.; Bergman, S. G.; Reisenfeld, S.

    1981-01-01

    A detailed technical description of the 30/20 GHz flight experiment system is presented. The overall communication system is described with performance analyses, communication operations, and experiment plans. Hardware descriptions of the payload are given with the tradeoff studies that led to the final design. The spacecraft bus which carries the payload is discussed and its interface with the launch vehicle system is described. Finally, the hardwares and the operations of the terrestrial segment are presented.

  9. Research: Research in Language Arts Education: Notes on How It Works.

    ERIC Educational Resources Information Center

    Dilworth, Collett B., Jr.

    1980-01-01

    Provides an overview of different types of educational research in language arts, including the quasi-experiment, the controlled methodological experiment, the controlled descriptive experiment, the non-controlled description, and textual analysis. (RL)

  10. Electrolysis Performance Improvement and Validation Experiment

    NASA Technical Reports Server (NTRS)

    Schubert, Franz H.

    1992-01-01

    Viewgraphs on electrolysis performance improvement and validation experiment are presented. Topics covered include: water electrolysis: an ever increasing need/role for space missions; static feed electrolysis (SFE) technology: a concept developed for space applications; experiment objectives: why test in microgravity environment; and experiment description: approach, hardware description, test sequence and schedule.

  11. Pricing decisions from experience: the roles of information-acquisition and response modes.

    PubMed

    Golan, Hagai; Ert, Eyal

    2015-03-01

    While pricing decisions that are based on experience are quite common, e.g., setting a selling price for a used car, this type of decision has been surprisingly overlooked in psychology and decision research. Previous studies have focused on either choice decisions from experience, or pricing decisions from description. Those studies revealed that pricing involves cognitive mechanisms other than choice, while experience-based decisions involve mechanisms that differ from description-based ones. Thus, the mutual effect of pricing and experience on decision-making remains unclear. To test this effect, we experimentally compared real-money pricing decisions from experience with those from description, and with choices from experience. The results show that the mode of acquiring information affects pricing: the tendency to underprice high-probability prospects and overprice low-probability ones is diminished when pricing is based on experience rather than description. The findings further reveal attenuation of the tendency to underweight rare events, which underlies choices from experience, in pricing decisions from experience. The difference occurs because the response mode affects the search effort and decision strategy in decisions from experience. Copyright © 2014 Elsevier B.V. All rights reserved.

  12. Music Teachers' Descriptions of Their Workplaces in Relation to Micropolitics

    ERIC Educational Resources Information Center

    Conway, Colleen; Rawlings, Jared; Hibbard, Shannan

    2018-01-01

    The purpose of this study was to examine the descriptions of workplace experiences of nine music teachers in direct relation to the literature on micropolitics. Research questions were: (a) How did participant music teachers' descriptions of their workplace experiences relate to teachers, administrators, and students (as discussed in the…

  13. A meta-analytic review of two modes of learning and the description-experience gap.

    PubMed

    Wulff, Dirk U; Mergenthaler-Canseco, Max; Hertwig, Ralph

    2018-02-01

    People can learn about the probabilistic consequences of their actions in two ways: One is by consulting descriptions of an action's consequences and probabilities (e.g., reading up on a medication's side effects). The other is by personally experiencing the probabilistic consequences of an action (e.g., beta testing software). In principle, people taking each route can reach analogous states of knowledge and consequently make analogous decisions. In the last dozen years, however, research has demonstrated systematic discrepancies between description- and experienced-based choices. This description-experience gap has been attributed to factors including reliance on a small set of experience, the impact of recency, and different weighting of probability information in the two decision types. In this meta-analysis focusing on studies using the sampling paradigm of decisions from experience, we evaluated these and other determinants of the decision-experience gap by reference to more than 70,000 choices made by more than 6,000 participants. We found, first, a robust description-experience gap but also a key moderator, namely, problem structure. Second, the largest determinant of the gap was reliance on small samples and the associated sampling error: free to terminate search, individuals explored too little to experience all possible outcomes. Third, the gap persisted when sampling error was basically eliminated, suggesting other determinants. Fourth, the occurrence of recency was contingent on decision makers' autonomy to terminate search, consistent with the notion of optional stopping. Finally, we found indications of different probability weighting in decisions from experience versus decisions from description when the problem structure involved a risky and a safe option. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  14. Mobile communications satellite antenna flight experiment definition

    NASA Technical Reports Server (NTRS)

    Freeland, Robert E.

    1987-01-01

    Results of a NASA-sponsored study to determine the technical feasibility and cost of a Shuttle-based flight experiment specifically intended for the MSAT commercial user community are presented. The experiment will include demonstrations of technology in the areas of radio frequency, sensing and control, and structures. The results of the structural subsystem study summarized here include experiment objective and technical approach, experiment structural description, structure/environment interactions, structural characterization, thermal characterization, structural measurement system, and experiment functional description.

  15. Bodies obliged and unbound: differentiated response tendencies for injunctive and descriptive social norms.

    PubMed

    Jacobson, Ryan P; Mortensen, Chad R; Cialdini, Robert B

    2011-03-01

    The authors suggest that injunctive and descriptive social norms engage different psychological response tendencies when made selectively salient. On the basis of suggestions derived from the focus theory of normative conduct and from consideration of the norms' functions in social life, the authors hypothesized that the 2 norms would be cognitively associated with different goals, would lead individuals to focus on different aspects of self, and would stimulate different levels of conflict over conformity decisions. Additionally, a unique role for effortful self-regulation was hypothesized for each type of norm-used as a means to resist conformity to descriptive norms but as a means to facilitate conformity for injunctive norms. Four experiments supported these hypotheses. Experiment 1 demonstrated differences in the norms' associations to the goals of making accurate/efficient decisions and gaining/maintaining social approval. Experiment 2 provided evidence that injunctive norms lead to a more interpersonally oriented form of self-awareness and to a greater feeling of conflict about conformity decisions than descriptive norms. In the final 2 experiments, conducted in the lab (Experiment 3) and in a naturalistic environment (Experiment 4), self-regulatory depletion decreased conformity to an injunctive norm (Experiments 3 and 4) and increased conformity to a descriptive norm (Experiment 4)-even though the norms advocated identical behaviors. By illustrating differentiated response tendencies for each type of social norm, this research provides new and converging support for the focus theory of normative conduct. (c) 2011 APA, all rights reserved

  16. Effect of descriptive information and experience on automation reliance.

    PubMed

    Yuviler-Gavish, Nirit; Gopher, Daniel

    2011-06-01

    The present research addresses the issue of reliance on decision support systems for the long-term (DSSLT), which help users develop decision-making strategies and long-term planning. It is argued that providing information about a system's future performance in an experiential manner, as compared with a descriptive manner, encourages users to increase their reliance level. Establishing appropriate reliance on DSSLT is contingent on the system developer's ability to provide users with information about the system's future performance. A sequence of three studies contrasts the effect on automation reliance of providing descriptive information versus experience for DSSLT with two different positive expected values of recommendations. Study I demonstrated that when automation reliance was determined solely on the basis of description, it was relatively low, but it increased significantly when a decision was made after experience with 50 training simulations. Participants were able to learn to increase their automation reliance levels when they encountered the same type of recommendation again. Study 2 showed that the absence of preliminary descriptive information did not affect the automation reliance levels obtained after experience. Study 3 demonstrated that participants were able to generalize their learning about increasing reliance levels to new recommendations. Using experience rather than description to give users information about future performance in DSSLT can help increase automation reliance levels. Implications for designing DSSLT and decision support systems in general are discussed.

  17. Affective Beliefs Influence the Experience of Eating Meat

    PubMed Central

    Anderson, Eric C.; Barrett, Lisa Feldman

    2016-01-01

    People believe they experience the world objectively, but research continually demonstrates that beliefs influence perception. Emerging research indicates that beliefs influence the experience of eating. In three studies, we test whether beliefs about how animals are raised can influence the experience of eating meat. Samples of meat were paired with descriptions of animals raised on factory farms or raised on humane farms. Importantly, the meat samples in both conditions were identical. However, participants experienced the samples differently: meat paired with factory farm descriptions looked, smelled, and tasted less pleasant. Even basic properties of flavor were influenced: factory farmed samples tasted more salty and greasy. Finally, actual behavior was influenced: participants consumed less when samples were paired with factory farm descriptions. These findings demonstrate that the experience of eating is not determined solely by physical properties of stimuli—beliefs also shape experience. PMID:27556643

  18. Life science research objectives and representative experiments for the space station

    NASA Technical Reports Server (NTRS)

    Johnson, Catherine C. (Editor); Arno, Roger D. (Editor); Mains, Richard (Editor)

    1989-01-01

    A workshop was convened to develop hypothetical experiments to be used as a baseline for space station designer and equipment specifiers to ensure responsiveness to the users, the life science community. Sixty-five intra- and extramural scientists were asked to describe scientific rationales, science objectives, and give brief representative experiment descriptions compatible with expected space station accommodations, capabilities, and performance envelopes. Experiment descriptions include hypothesis, subject types, approach, equipment requirements, and space station support requirements. The 171 experiments are divided into 14 disciplines.

  19. Coast Guard Surface Vessel Radar Detection Performance

    DTIC Science & Technology

    1982-04-01

    conjunction with two vis-, ual detection experiments in 1980 and 1981 and a dedicated electronic detection experiment in 1981 conducted by the U.S.C.G. R&D...Center. These are partof 4 series of experiments designed to improve search planning guidance contained in the National Search and Rescue Manual. Eighty...BACKGROUND .................... 1-. 1.1 SCOPE . . 1.2 AN/SPS-64(V) AND AN/SPS-66 SYSTEM DESCRIPTIONS . . . . . . 1-1 1.3 DESCRIPTION OF THE EXPERIMENTS

  20. Impacts of Maximizing Tendencies on Experience-Based Decisions.

    PubMed

    Rim, Hye Bin

    2017-06-01

    Previous research on risky decisions has suggested that people tend to make different choices depending on whether they acquire the information from personally repeated experiences or from statistical summary descriptions. This phenomenon, called as a description-experience gap, was expected to be moderated by the individual difference in maximizing tendencies, a desire towards maximizing decisional outcome. Specifically, it was hypothesized that maximizers' willingness to engage in extensive information searching would lead maximizers to make experience-based decisions as payoff distributions were given explicitly. A total of 262 participants completed four decision problems. Results showed that maximizers, compared to non-maximizers, drew more samples before making a choice but reported lower confidence levels on both the accuracy of knowledge gained from experiences and the likelihood of satisfactory outcomes. Additionally, maximizers exhibited smaller description-experience gaps than non-maximizers as expected. The implications of the findings and unanswered questions for future research were discussed.

  1. Attending to Student Voice: The Impact of Descriptive Feedback on Learning and Teaching

    ERIC Educational Resources Information Center

    Rodgers, Carol R.

    2006-01-01

    This article explores the central role that description of experience, on the part of both teacher and students, plays in reflective practice. In particular, it highlights the power of students' description of their own learning as revealed to teachers in dialogue, a process I call "descriptive feedback." Descriptive feedback is neither…

  2. Spacelab J experiment descriptions

    NASA Technical Reports Server (NTRS)

    Miller, Teresa Y. (Editor)

    1993-01-01

    Brief descriptions of the experiment investigations for the Spacelab J Mission which was launched from the Kennedy Space Center aboard the Endeavour in Sept. 1992 are presented. Experiments cover the following: semiconductor crystals; single crystals; superconducting composite materials; crystal growth; bubble behavior in weightlessness; microgravity environment; health monitoring of Payload Specialists; cultured plant cells; effect of low gravity on calcium metabolism and bone formation; and circadian rhythm.

  3. Quantum theory as plausible reasoning applied to data obtained by robust experiments.

    PubMed

    De Raedt, H; Katsnelson, M I; Michielsen, K

    2016-05-28

    We review recent work that employs the framework of logical inference to establish a bridge between data gathered through experiments and their objective description in terms of human-made concepts. It is shown that logical inference applied to experiments for which the observed events are independent and for which the frequency distribution of these events is robust with respect to small changes of the conditions under which the experiments are carried out yields, without introducing any concept of quantum theory, the quantum theoretical description in terms of the Schrödinger or the Pauli equation, the Stern-Gerlach or Einstein-Podolsky-Rosen-Bohm experiments. The extraordinary descriptive power of quantum theory then follows from the fact that it is plausible reasoning, that is common sense, applied to reproducible and robust experimental data. © 2016 The Author(s).

  4. Short description of mathematical support programs for space experiments in the Interkosmos program

    NASA Technical Reports Server (NTRS)

    Elyasberg, P. Y.

    1979-01-01

    A synopsis of programs of mathematical support designed at the Institute for Cosmic Research of the USSR Academy of Sciences for cosmic experiments being conducted in the Interkosmos Program is presented. A short description of the appropriate algorithm is given.

  5. LiveDescribe: Can Amateur Describers Create High-Quality Audio Description?

    ERIC Educational Resources Information Center

    Branje, Carmen J.; Fels, Deborah I.

    2012-01-01

    Introduction: The study presented here evaluated the usability of the audio description software LiveDescribe and explored the acceptance rates of audio description created by amateur describers who used LiveDescribe to facilitate the creation of their descriptions. Methods: Twelve amateur describers with little or no previous experience with…

  6. Descriptive Feedback: Student Voice in K-5 Classrooms

    ERIC Educational Resources Information Center

    Rodgers, Carol

    2018-01-01

    In this article, the author argues the imperative of critical dialogue between learners and teachers on learners' experiences in the classroom. This dialogical process is called "descriptive feedback"--feedback given by students to teachers on their (students') experiences as learners. Drawing on the literature on feedback, descriptive…

  7. How Young Children Learn from Examples: Descriptive and Inferential Problems

    ERIC Educational Resources Information Center

    Kalish, Charles W.; Kim, Sunae; Young, Andrew G.

    2012-01-01

    Three experiments with preschool- and young school-aged children (N = 75 and 53) explored the kinds of relations children detect in samples of instances (descriptive problem) and how they generalize those relations to new instances (inferential problem). Each experiment initially presented a perfect biconditional relation between two features…

  8. Radar derived spatial statistics of summer rain. Volume 1: Experiment description

    NASA Technical Reports Server (NTRS)

    Katz, I.; Arnold, A.; Goldhirsh, J.; Konrad, T. G.; Vann, W. L.; Dobson, E. B.; Rowland, J. R.

    1975-01-01

    An experiment was performed at Wallops Island, Virginia, to obtain a statistical description of summer rainstorms. Its purpose was to obtain information needed for design of earth and space communications systems in which precipitation in the earth's atmosphere scatters or attenuates the radio signal. Rainstorms were monitored with the high resolution SPANDAR radar and the 3-dimensional structures of the storms were recorded on digital tape. The equipment, the experiment, and tabulated data obtained during the experiment are described.

  9. Technology for the Future: In-Space Technology Experiments Program, part 1

    NASA Technical Reports Server (NTRS)

    Breckenridge, Roger A. (Compiler); Clark, Lenwood G. (Compiler); Willshire, Kelli F. (Compiler); Beck, Sherwin M. (Compiler); Collier, Lisa D. (Compiler)

    1991-01-01

    The purpose of the Office of Aeronautics and Space Technology (OAST) In-Space Technology Experiment Program (In-STEP) 1988 Workshop was to identify and prioritize technologies that are critical for future national space programs and require validation in the space environment, and review current NASA (In-Reach) and industry/university (Out-Reach) experiments. A prioritized list of the critical technology needs was developed for the following eight disciplines: structures; environmental effects; power systems and thermal management; fluid management and propulsion systems; automation and robotics; sensors and information systems; in-space systems; and humans in space. This is part one of two parts and is the executive summary and experiment description. The executive summary portion contains keynote addresses, strategic planning information, and the critical technology needs summaries for each theme. The experiment description portion contains brief overviews of the objectives, technology needs and backgrounds, descriptions, and development schedules for current industry, university, and NASA space flight technology experiments.

  10. Feature highlighting enhances learning of a complex natural-science category.

    PubMed

    Miyatsu, Toshiya; Gouravajhala, Reshma; Nosofsky, Robert M; McDaniel, Mark A

    2018-04-26

    Learning naturalistic categories, which tend to have fuzzy boundaries and vary on many dimensions, can often be harder than learning well defined categories. One method for facilitating the category learning of naturalistic stimuli may be to provide explicit feature descriptions that highlight the characteristic features of each category. Although this method is commonly used in textbooks and classrooms, theoretically it remains uncertain whether feature descriptions should advantage learning complex natural-science categories. In three experiments, participants were trained on 12 categories of rocks, either without or with a brief description highlighting key features of each category. After training, they were tested on their ability to categorize both old and new rocks from each of the categories. Providing feature descriptions as a caption under a rock image failed to improve category learning relative to providing only the rock image with its category label (Experiment 1). However, when these same feature descriptions were presented such that they were explicitly linked to the relevant parts of the rock image (feature highlighting), participants showed significantly higher performance on both immediate generalization to new rocks (Experiment 2) and generalization after a 2-day delay (Experiment 3). Theoretical and practical implications are discussed. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  11. How Accurately Can We Measure Galaxy Environment at High Redshift Using Only Photometric Redshifts?

    NASA Astrophysics Data System (ADS)

    Florez, Jonathan; Jogee, Shardha; Sherman, Sydney; Papovich, Casey J.; Finkelstein, Steven L.; Stevans, Matthew L.; Kawinwanichakij, Lalitwadee; Ciardullo, Robin; Gronwall, Caryl; SHELA/HETDEX

    2017-06-01

    We use a powerful synergy of six deep photometric surveys (Herschel SPIRE, Spitzer IRAC, NEWFIRM K-band, DECam ugriz, and XMM X-ray) and a future optical spectroscopic survey (HETDEX) in the Stripe 82 field to study galaxy evolution during the 1.9 < z < 3.5 epoch when cosmic star formation and black hole activity peaked, and protoclusters began to collapse. With an area of 24 sq. degrees, a sample size of ~ 0.8 million galaxies complete in stellar mass above M* ~ 10^10 solar masses, and a comoving volume of ~ 0.45 Gpc^3, our study will allow us to make significant advancements in understanding the connection between galaxies and their respective dark matter components. In this poster, we characterize how robustly we can measure environment using only our photometric redshifts. We compare both local and large-scale measures of environment (e.g., projected two-point correlation function, projected nearest neighbor densities, and galaxy counts within some projected aperture) at different photometric redshifts to cosmological simulations in order to quantify the uncertainty in our estimates of environment. We also explore how robustly one can recover the variation of galaxy properties with environment, when using only photometric redshifts. In the era of large photometric surveys, this work has broad implications for studies addressing the impact of environment on galaxy evolution at early cosmic epochs. We acknowledge support from NSF grants AST-1614798, AST-1413652 and NSF GRFP grant DGE-1610403.

  12. 48 CFR 752.7005 - Submission requirements for development experience documents.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ..., technologies, management, research, results and experience as outlined in the Agency's ADS Chapter 540, section... paragraph (b)(1)(i) of this clause. (2) Format. (i) Descriptive information is required for all Contractor... descriptive information: (A) Name and version of the application software used to create the file, e.g., Word...

  13. 48 CFR 752.7005 - Submission requirements for development experience documents.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ..., technologies, management, research, results and experience as outlined in the Agency's ADS Chapter 540, section... paragraph (b)(1)(i) of this clause. (2) Format. (i) Descriptive information is required for all Contractor... descriptive information: (A) Name and version of the application software used to create the file, e.g., Word...

  14. 48 CFR 752.7005 - Submission requirements for development experience documents.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., technologies, management, research, results and experience as outlined in the Agency's ADS Chapter 540, section... paragraph (b)(1)(i) of this clause. (2) Format. (i) Descriptive information is required for all Contractor... descriptive information: (A) Name and version of the application software used to create the file, e.g., Word...

  15. 48 CFR 752.7005 - Submission requirements for development experience documents.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., technologies, management, research, results and experience as outlined in the Agency's ADS Chapter 540, section... paragraph (b)(1)(i) of this clause. (2) Format. (i) Descriptive information is required for all Contractor... descriptive information: (A) Name and version of the application software used to create the file, e.g., Word...

  16. 48 CFR 752.7005 - Submission requirements for development experience documents.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., technologies, management, research, results and experience as outlined in the Agency's ADS Chapter 540, section... paragraph (b)(1)(i) of this clause. (2) Format. (i) Descriptive information is required for all Contractor... descriptive information: (A) Name and version of the application software used to create the file, e.g., Word...

  17. Truth, Love and Campus Expansion. The University of Pittsburgh Experience.

    ERIC Educational Resources Information Center

    Shaw, Paul C.

    This document provides a descriptive analysis of the University of Pittsburgh's experience with campus expansion during a 2 1/2 year period from fall 1970 to spring 1973. Part one describes a background and overview of campus expansion, a description of selective Oakland demographic characteristics, a discussion of the first major conflict with…

  18. Differentiating between descriptive and interpretive phenomenological research approaches.

    PubMed

    Matua, Gerald Amandu; Van Der Wal, Dirk Mostert

    2015-07-01

    To provide insight into how descriptive and interpretive phenomenological research approaches can guide nurse researchers during the generation and application of knowledge. Phenomenology is a discipline that investigates people's experiences to reveal what lies 'hidden' in them. It has become a major philosophy and research method in the humanities, human sciences and arts. Phenomenology has transitioned from descriptive phenomenology, which emphasises the 'pure' description of people's experiences, to the 'interpretation' of such experiences, as in hermeneutic phenomenology. However, nurse researchers are still challenged by the epistemological and methodological tenets of these two methods. The data came from relevant online databases and research books. A review of selected peer-reviewed research and discussion papers published between January 1990 and December 2013 was conducted using CINAHL, Science Direct, PubMed and Google Scholar databases. In addition, selected textbooks that addressed phenomenology as a philosophy and as a research methodology were used. Evidence from the literature indicates that most studies following the 'descriptive approach' to research are used to illuminate poorly understood aspects of experiences. In contrast, the 'interpretive/hermeneutic approach' is used to examine contextual features of an experience in relation to other influences such as culture, gender, employment or wellbeing of people or groups experiencing the phenomenon. This allows investigators to arrive at a deeper understanding of the experience, so that caregivers can derive requisite knowledge needed to address such clients' needs. Novice nurse researchers should endeavour to understand phenomenology both as a philosophy and research method. This is vitally important because in-depth understanding of phenomenology ensures that the most appropriate method is chosen to implement a study and to generate knowledge for nursing practice. This paper adds to the current debate on why it is important for nurse researchers to clearly understand phenomenology as a philosophy and research method before embarking on a study. The paper guides novice researchers on key methodological decisions they need to make when using descriptive or interpretive phenomenological research approaches.

  19. Nurses' Learning Experiences with the Kinaesthetics Care Concept Training in a Nursing Home: A Qualitative Descriptive Study

    ERIC Educational Resources Information Center

    Fringer, André; Huth, Martina; Hantikainen, Virpi

    2015-01-01

    In geriatric care, movement support skills of nurses are often limited, resulting in unnecessary functional decline of older adult residents and physical strain of nurses. Kinaesthetics training aims to improve movement competences of nurses and residents. The aim of this qualitative descriptive study is to describe nursing teams' experience with…

  20. Business Education Students' Evaluation of the Benefits and Challenges Confronting Student Industrial Works Experience Scheme in Edo and Delta States

    ERIC Educational Resources Information Center

    Olumese, H. A.; Ediagbonya, Kennedy

    2016-01-01

    This research paper specifically investigated Business Education students' evaluation of the benefits and challenges confronting Student Industrial Works Experience Scheme (SIWES) in Edo and Delta States. Two research questions were raised to guide the study and were answered descriptively. The descriptive survey research design was adopted for…

  1. Focus on Communicating.

    ERIC Educational Resources Information Center

    Instructor, 1988

    1988-01-01

    Ways of teaching students to communicate effectively using descriptive words and comparative statements are described. Two task cards involving descriptions of experiments investigating air pressure are included. (MT)

  2. Detailed design package for design of a video system providing optimal visual information for controlling payload and experiment operations with television

    NASA Technical Reports Server (NTRS)

    1975-01-01

    A detailed description of a video system for controlling space shuttle payloads and experiments is presented in the preliminary design review and critical design review, first and second engineering design reports respectively, and in the final report submitted jointly with the design package. The material contained in the four subsequent sections of the package contains system descriptions, design data, and specifications for the recommended 2-view system. Section 2 contains diagrams relating to the simulation test configuration of the 2-view system. Section 3 contains descriptions and drawings of the deliverable breadboard equipment. A description of the recommended system is contained in Section 4 with equipment specifications in Section 5.

  3. Being Subject to Restrictions, Limitations and Disciplining: A Thematic Analysis of Individuals' Experiences in Psychiatric Intensive Care.

    PubMed

    Salzmann-Erikson, Martin; Söderqvist, Cecilia

    2017-07-01

    The aim of this study was to describe individuals' experiences of being hospitalized in psychiatric intensive care units (PICUs). Four participants who had previously been admitted in a PICU were interviewed using open-ended questions. The data were analyzed using thematic analysis. Analysis resulted in a synthesis of the various ways patients experienced limitations: (1) Descriptions of Being Limited in the Environment, (2) Descriptions of being Limited in Interactions with Staff, (3) Descriptions of Being Limited in terms of Access to Information, and (4) Descriptions of Having Limited Freedom and Autonomy. Hospitalization is experienced as a life-changing event that shows a kaleidoscopic view of limitation. We stress that the conceptualization of limitation must be considered due to its historical origins, sociopolitical aspirations, and philosophy of care. Thus, nurse practitioners and nursing leaders are advised to put the patient's experience at the center of care, and to involve and integrate patients throughout the recovery process.

  4. Improving Written Communication Through Minimal Feedback

    PubMed Central

    Traxler, Matthew J.; Gernsbacher, Morton Ann

    2014-01-01

    We propose that writers must form accurate representations of how their readers will interpret their texts to convey their ideas successfully. In two experiments, we investigated whether getting feedback from their readers helps writers form better representations of how their texts are interpreted. In our first experiment, one group of subjects (writers) wrote descriptions of a set of geometric figures; another group of subjects (readers) read those descriptions and used them to select the figures from sets of similar looking distractor figures. Half the writers received feedback on how well their readers selected the figures, and half the writers did not receive this feedback. Those writers who received feedback improved their descriptions more than those writers who did not receive feedback. In our second experiment, half the writers received two treatments of feedback on their descriptions of one set of figures, whereas the other half of the writers did not receive feedback. Then, all the writers described a new set of figures. Those writers who had previously received feedback wrote better new descriptions than did those writers who had never received feedback. We concluded that feedback – even this minimal form of feedback – helps writers to envision how readers interpret their texts. PMID:25520535

  5. Age differences in experiential and deliberative processes in unambiguous and ambiguous decision making.

    PubMed

    Huang, Yumi H; Wood, Stacey; Berger, Dale E; Hanoch, Yaniv

    2015-09-01

    Older adults experience declines in deliberative decisional capacities, while their affective or experiential abilities tend to remain intact (Peters & Bruine de Bruin, 2012). The current study used this framework to investigate age differences in description-based and experience-based decision-making tasks. Description-based tasks emphasize deliberative processing by allowing decision makers to analyze explicit descriptions of choice-reward information. Experience-based tasks emphasize affective or experiential processing because they lack the explicit choice-reward information, forcing decision makers to rely on feelings and information derived from past experiences. This study used the Columbia Card Task (CCT) as a description-based task where probability information is provided and the Iowa Gambling Task (IGT) as an experience-based task, where it is not. As predicted, compared to younger adults (N = 65), older adults (N = 65) performed more poorly on the CCT but performed similarly on the IGT. Deliberative capacities (i.e., executive control and numeracy abilities) explained the relationship between age and performance on the CCT, suggesting that age-related differences in description-based decision-making tasks are related to declines in deliberative capacities. However, deliberative capacities were not associated with performance on the IGT for either older or younger adults. Nevertheless, on the IGT, older adults reported more use of affect-based strategies versus deliberative strategies, whereas younger adults reported similar use of these strategies. This finding offers partial support for the idea that decision-making tasks that rely on deliberate processing are more likely to demonstrate age effects than those that are more experiential. (c) 2015 APA, all rights reserved).

  6. Apollo experience report: Mission planning for Apollo entry

    NASA Technical Reports Server (NTRS)

    Graves, C. A.; Harpold, J. C.

    1972-01-01

    The problems encountered and the experience gained in the entry mission plans, flight software, trajectory-monitoring procedures, and backup trajectory-control techniques of the Apollo Program should provide a foundation upon which future spacecraft programs can be developed. Descriptions of these entry activities are presented. Also, to provide additional background information needed for discussion of the Apollo entry experience, descriptions of the entry targeting for the Apollo 11 mission and the postflight analysis of the Apollo 10 mission are presented.

  7. The Skylab Student Project. [high school winners selection and experiments description

    NASA Technical Reports Server (NTRS)

    Floyd, H. B.

    1973-01-01

    The National Aeronautics and Space Administration (NASA) and the National Science Teachers' Association (NSTA) undertook in 1971 a cooperative effort which brought high school students of the Nation into the mainstream of Skylab research through the Skylab Student Project. This paper presents the background, objectives and scope of the project, experiment selection procedures, as well as experiment descriptions and status. The paper includes observations on student caliber and inclinations and implications of some developments for the benefit of future researchers.

  8. International Space Station Science Information for Public Release on the NASA Web Portal

    NASA Technical Reports Server (NTRS)

    Robinson, Julie A.; Tate, Judy M.

    2009-01-01

    This document contains some of the descriptions of payload and experiment related to life support and habitation. These describe experiments that have or are scheduled to fly on the International Space Station. There are instructions, and descriptions of the fields that make up the database. The document is arranged in alphabetical order by the Payload

  9. Improving Written Communication Through Perspective-taking

    PubMed Central

    Traxler, Matthew J.; Gernsbacher, Morton Ann

    2014-01-01

    To convey their ideas successfully, writers must envision how readers will interpret their texts. In our previous research (Traxler & Gernsbacher, 1992), we discovered that writers who received feedback from their readers successfully revised descriptions of geometric figures, whereas writers who did not receive feedback did not. We also discovered that writers who received feedback from their readers on one set of descriptions wrote better descriptions of a new set of geometric figures. We concluded that feedback—even a minimal form of feedback—helps writers learn to envision how readers will interpret their texts. In the present research, we investigated another way that writers can learn to envision how readers will interpret their texts. Our treatment placed writers “in their readers’ shoes”. In three experiments, half the writers performed a task that their readers would subsequently perform, and the other half of the writers performed a control task. In our first and second experiments, the writers who gained their readers’ perspective by performing their readers’ task successfully revised their descriptions of geometric figures, whereas writers who performed the control task did not. In our third experiment, we discovered that writers who performed their readers’ task did not improve their descriptions merely because they were exposed to examples of other writers’ descriptions. We concluded that gaining their readers’ perspective helps writers communicate more clearly because perspective-taking helps writers form a mental representation of how readers interpret their texts. PMID:25404785

  10. Animations Need Narrations: An Experimental Test of a Dual-Coding Hypothesis.

    ERIC Educational Resources Information Center

    Mayer, Richard E.; Anderson, Richard B.

    1991-01-01

    In two experiments, 102 mechanically naive college students viewed an animation on bicycle tire pump operation with a verbal description before or during the animation or without description. Improved performance of those receiving description during the animation supports a dual-coding hypothesis of connections between visual and verbal stimuli.…

  11. The Influence of Visual Experience on the Ability to Form Spatial Mental Models Based on Route and Survey Descriptions

    ERIC Educational Resources Information Center

    Noordzij, Matthijs L.; Zuidhoek, Sander; Postma, Albert

    2006-01-01

    The purpose of the present study is twofold: the first objective is to evaluate the importance of visual experience for the ability to form a spatial representation (spatial mental model) of fairly elaborate spatial descriptions. Secondly, we examine whether blind people exhibit the same preferences (i.e. level of performance on spatial tasks) as…

  12. The FCF Combustion Integrated Rack: Microgravity Combustion Science Onboard the International Space Station

    NASA Technical Reports Server (NTRS)

    OMalley, Terence F.; Weiland, Karen J.

    2002-01-01

    The Combustion Integrated Rack (CIR) is one of three facility payload racks being developed for the International Space Station (ISS) Fluids and Combustion Facility (FCF). Most microgravity combustion experiments will be performed onboard the Space Station in the Combustion Integrated Rack. Experiment-specific equipment will be installed on orbit in the CIR to customize it to perform many different scientific experiments during the ten or more years that it will operate on orbit. This paper provides an overview of the CIR, including a description of its preliminary design and planned accommodations for microgravity combustion science experiments, and descriptions of the combustion science experiments currently planned for the CIR.

  13. Stick or Switch: A Selection Heuristic Predicts when People Take the Perspective of Others or Communicate Egocentrically.

    PubMed

    Rogers, Shane L; Fay, Nicolas

    2016-01-01

    This paper examines a cognitive mechanism that drives perspective-taking and egocentrism in interpersonal communication. Using a conceptual referential communication task, in which participants describe a range of abstract geometric shapes, Experiment 1 shows that perspective-taking and egocentric communication are frequent communication strategies. Experiment 2 tests a selection heuristic account of perspective-taking and egocentric communication. It uses participants' shape description ratings to predict their communication strategy. Participants' communication strategy was predicted by how informative they perceived the different shape descriptions to be. When participants' personal shape description was perceived to be more informative than their addressee's shape description, there was a strong bias to communicate egocentrically. By contrast, when their addressee's shape description was perceived to be more informative, there was a strong bias to take their addressee's perspective. When the shape descriptions were perceived to be equally informative, there was a moderate bias to communicate egocentrically. This simple, but powerful, selection heuristic may be critical to the cumulative cultural evolution of human communication systems, and cumulative cultural evolution more generally.

  14. How do older people describe their sensory experiences of the natural world? A systematic review of the qualitative evidence.

    PubMed

    Orr, Noreen; Wagstaffe, Alexandra; Briscoe, Simon; Garside, Ruth

    2016-06-01

    Despite the increased scholarly interest in the senses and sensory experiences, the topic of older people's sensory engagement with nature is currently under researched. This paper reviews and synthesises qualitative research evidence about how older people, including those living with dementia, describe their sensory engagement with the natural world. Ten databases were searched from 1990 to September 2014: MEDLINE (Ovid), MEDLINE-in-Process (Ovid), PsycINFO (Ovid), CINAHL (EBSCO), GreenFILE (EBSCO), ProQuest Sociology, ASSIA (ProQuest), International Bibliography of the Social Sciences (ProQuest); HMIC (Ovid); Social Policy and Practice (Ovid). Forward and backward citation chasing of included articles was conducted; 20 organizations were contacted to identify unpublished reports. Screening was undertaken independently by two reviewers. Twenty seven studies were included. Thematic analysis revealed that descriptions of sensory experiences are encompassed within six themes: descriptions from 'the window'; sensory descriptions that emphasise vision; descriptions of 'being in nature'; descriptions of 'doing in nature'; barriers to sensory engagement; and meanings of being and doing in nature. Older people derive considerable pleasure and enjoyment from viewing nature, being and doing in nature which, in turn has a positive impact on their wellbeing and quality of life. Future research could usefully explore how sensory engagement with nature could be used to stimulate reminiscences of places and people, and evoke past sensory experiences to enrich everyday life and maintain a sense of self. The protocol was registered with PROSPERO ( CRD42015020736 ).

  15. Directional borehole radar tests of an oil injection experiment at the Colorado School of Mines, Golden, Colorado

    USGS Publications Warehouse

    Abraham, Jared D.; Moulton, Craig; Brown, Philip J.

    2002-01-01

    In October 2001, the U.S. Geological Survey conducted borehole radar surveys of an oil injection experiment at the Colorado School of Mines (CSM), in Golden Colorado using the prototype U.S. Geological Survey (USGS)-developed directional borehole radar system (DBOR). A explanation of the system can be found in Wright and others (2001). The USGS was invited to the CSM to deploy the prototype directional borehole radar system during an oil injection experiment conducted to investigate the applicability of radar to monitoring formation invasion from a horizontal borehole. This work was conducted by a student at the CSM and is summarized in Moita (2001). The purpose of this report is to release the data and to summarize the experiments conducted with the DBOR system. This report contains, (1) a description of the system as deployed in the experiments, (2) a description of the data collected and data parameters used, (3) a simple display of some of the data collected, and (4) a description of the DBOR data files.

  16. ATS-F ground station integration

    NASA Technical Reports Server (NTRS)

    1975-01-01

    The ATS ground stations were described, including a system description, operational frequencies and bandwidth, and a discussion of individual subsystems. Each station configuration is described as well as its floor plan. The station performance, as tested by the GSI, is displayed in chart form providing a summary of the more important parameters tested. This chart provides a listing of test data, by site, for comparison purposes. Also included is a description of the ATS-6 experiments, the equipment, and interfaces required to perform these experiments. The ADP subsystem and its role in the experiments is also described. A description of each program task and a summary of the activities performed were then given. These efforts were accomplished at the Rosman II Ground Station, located near Rosman N.C., the Mojave Ground Station, located near Barstow Ca., and the GSI Contractors plant located near Baltimore, Md.

  17. The Experience and Self-Management of Fatigue in Hemodialysis Patients

    PubMed Central

    Horigan, Ann E.; Schneider, Susan M.; Docherty, Sharron; Barroso, Julie

    2013-01-01

    Fatigue is a common and debilitating symptom for adult patients with end stage renal disease on hemodialysis and has been associated with decreased survival and quality of life. Patients on hemodialysis must find ways to manage their fatigue and mitigate its effects on their lives. Currently, there is no description of the experience of fatigue for patients on hemodialysis living in the U.S., nor is there any description of the ways in which they manage their fatigue. The purpose of this qualitative descriptive work was to describe the experience and self-management of fatigue. Several themes were identified which included: the nature of fatigue, management of fatigue, consequences of fatigue, and factors associated with fatigue. This information will be valuable to nephrology nurses as they continue to care for and educate patients on hemodialysis. PMID:23767335

  18. The lived experience of self-transcendence in women with AIDS.

    PubMed

    Coward, D D

    1995-05-01

    To describe the lived experience of self-transcendence in women with AIDS, associated with increased sense of meaning and purpose, well-being, self-esteem, and connectedness with self and/or others. Exploratory-descriptive, using phenomenological research methods for the study approach, data collection, and data analysis. One written description and nine audiotaped interviews of self-transcendence experiences were provided by women with class IV HIV infection (AIDS). Ten women recruited by nurses at an AIDS family clinic and through a flyer at the AIDS Support Group House in Seattle. Participant descriptions indicated that women with AIDS continue to find meaning and purpose in their lives through experiences of receiving from others, giving to others, and maintaining hope. The findings support the theory that self-transcendence views and behaviors are a source of mental health at the end of life. The findings suggest several ways nurses may help women with AIDS discover or make meaning and purpose in their lives.

  19. Notes on Experiments.

    ERIC Educational Resources Information Center

    Physics Education, 1984

    1984-01-01

    Describes: (1) experiments using a simple phonocardiograph; (2) radioactivity experiments involving a VELA used as a ratemeter; (3) a 25cm continuously operating Foucault pendulum; and (4) camera control of experiments. Descriptions of equipment needed are provided when applicable. (JN)

  20. Big Data in the SHELA Field: Investigating Galaxy Quenching at High Redshifts

    NASA Astrophysics Data System (ADS)

    Stevans, Matthew L.; Finkelstein, Steven L.; Wold, Isak; Kawinwanichakij, Lalitwadee; Sherman, Sydney; Gebhardt, Karl; Jogee, Shardha; Papovich, Casey J.; Ciardullo, Robin; Gronwall, Caryl; Gawiser, Eric J.; Acquaviva, Viviana; Casey, Caitlin; Florez, Jonathan; HETDEX Team

    2017-06-01

    We present a measurement of the z ~ 4 Lyman break galaxy (LBG) rest-frame UV luminosity function to investigate the onset of quenching in the early universe. The bright-end of the galaxy luminosity function typically shows an exponential decline far steeper than that of the underlying halo mass function. This is typically attributed to negative feedback from past active galactic nuclei (AGN) activity as well as dust attenuation. Constraining the abundance of bright galaxies at early times (z > 3) can provide a key insight into the mechanisms regulating star formation in galaxies. However, existing studies suffer from low number statistics and/or the inability to robustly remove stellar and AGN contaminants. In this study we take advantage of the unprecedentedly large (24 deg^2) Spitzer/HETDEX Exploratory Large Area (SHELA) field and its deep multi-wavelength photometry, which includes DECam ugriz, NEWFIRM K-band, Spitzer/IRAC, Herschel/SPIRE, and X-ray from XMM-Newton and Chandra. With SHELA’s deep imaging over a large area we are uniquely positioned to study statistically significant samples of massive galaxies at high redshifts (z > 3) when the first massive galaxies began quenching. We select our sample using photometric redshifts from the EAZY software package (Brammer et al. 2008) based on the optical and far-infrared imaging. We directly identify and remove stellar contaminants and AGN with IRAC colors and X-ray detections, respectively. By pinning down the exact shape of the bright-end of the z ~ 4 LBG luminosity function, we provide the deepest probe yet into the baryonic physics dominating star formation and quenching in the early universe.

  1. Children and Loss. Part 1: A Teacher's View: The Child in the Single Parent and Blended Family. Part 2: Helping Children Cope with Loss. Unit for Child Studies. Selected Papers Number 25.

    ERIC Educational Resources Information Center

    Rowling, Louise

    In two parts, this paper discusses areas in family disruption, describes children's experiences of loss, and suggests strategies for helping children cope with such experiences. Specifically, part one provides: (1) global, normative summary descriptions of adjustment patterns of children from preschool age through adolescence and descriptions of…

  2. The Experience of Teaching of Descriptive Geometry and Engineering Graphics in Russian Language as a Foreign Language

    ERIC Educational Resources Information Center

    Voronina, Marianna V.; Tretyakova, Zlata O.

    2017-01-01

    The article considers the peculiarities of training foreign students subject "Descriptive geometry and Engineering Graphics" in a modern engineering university of Russia. The relevance of the problem conditioned by the fact that virtually there are no special studies of teaching Descriptive Geometry and Engineering Graphics in Russian…

  3. Outdoor Primary Education in Bangladesh. Experiments and Innovations in Education No. 40.

    ERIC Educational Resources Information Center

    Choudhury, M. Khashruzzaman; Obaidullah, A. K. M.

    A brief description of the development, implementation, and evaluation of the Outdoor Primary Education project in Bangladesh is presented in this booklet. A description of the development of the current primary education system in Bangladesh along with a description of the reasons that led to the development of the project are briefly provided in…

  4. Simulation Experiment Description Markup Language (SED-ML) Level 1 Version 3 (L1V3).

    PubMed

    Bergmann, Frank T; Cooper, Jonathan; König, Matthias; Moraru, Ion; Nickerson, David; Le Novère, Nicolas; Olivier, Brett G; Sahle, Sven; Smith, Lucian; Waltemath, Dagmar

    2018-03-19

    The creation of computational simulation experiments to inform modern biological research poses challenges to reproduce, annotate, archive, and share such experiments. Efforts such as SBML or CellML standardize the formal representation of computational models in various areas of biology. The Simulation Experiment Description Markup Language (SED-ML) describes what procedures the models are subjected to, and the details of those procedures. These standards, together with further COMBINE standards, describe models sufficiently well for the reproduction of simulation studies among users and software tools. The Simulation Experiment Description Markup Language (SED-ML) is an XML-based format that encodes, for a given simulation experiment, (i) which models to use; (ii) which modifications to apply to models before simulation; (iii) which simulation procedures to run on each model; (iv) how to post-process the data; and (v) how these results should be plotted and reported. SED-ML Level 1 Version 1 (L1V1) implemented support for the encoding of basic time course simulations. SED-ML L1V2 added support for more complex types of simulations, specifically repeated tasks and chained simulation procedures. SED-ML L1V3 extends L1V2 by means to describe which datasets and subsets thereof to use within a simulation experiment.

  5. Students' description of factors contributing to a meaningful clinical experience in entry-level physical therapist professional education.

    PubMed

    Rindflesch, Aaron; Hoversten, Kelsey; Patterson, Britta; Thomas, Laura; Dunfee, Heidi

    2013-01-01

    The objective of this study was to identify student, clinical instructor (CI), and environmental characteristics and behaviors that make for positive clinical experiences as perceived by physical therapy students. Nine third-year physical therapist students from entry-level physial therapist education programs around the United States participated in this study. In this phenomenologic study, participants were interviewed using open-ended questions designed to facilitate rich description. Interviews were recorded, transcribed, validated, and analyzed. Themes were identified through collaborative analysis using constant comparative coding. Students described student, CI, and environmental factors and behaviors that contribute to a quality clinical experience, including: the students' demonstration of initiative to prepare for the clinical experience and preparation after clinic hours; the importance of the CI's insight, allowing CIs to ascertain how much guidance to give in order to foster independence in the student; and the clinical environment's ability to welcome a student and provide the student with novel learning experiences. The student descriptions, including positive and negative examples shared by the interviewees, demonstrate essential characteristics that contribute to a positive clinical experience. Many of the factors identified by students can be influenced by student and CI training and preparation prior to the clinical experience.

  6. The emotional eyewitness: the effects of emotion on specific aspects of eyewitness recall and recognition performance.

    PubMed

    Houston, Kate A; Clifford, Brian R; Phillips, Louise H; Memon, Amina

    2013-02-01

    The present set of experiments aimed to investigate the effects of negative emotion on specific aspects of eyewitness recall and recognition performance. The experience of emotion was manipulated between subjects, with participants either viewing a crime scenario (a mugging) or a neutral scenario (a conversation). Eyewitness recall was categorized into descriptions of the perpetrator, critical incident, victim, and environmental details. The completeness and accuracy of eyewitness recall across categories of detail were measured in Experiment 1. A significant main effect of negative emotion was found for the completeness of recall. Furthermore, a significant main effect of the completeness of eyewitness statements was found, but not for their accuracy. However, these main effects were qualified by a significant interaction between emotion and category of detail recalled. Specifically, emotional participants provided a more complete description of the perpetrator than neutral participants; however, they were less able than their neutral counterparts to describe what the perpetrator did to the victim. In light of these findings, Experiment 2 investigated whether enhanced completeness of perpetrator descriptions during recall translated into an enhanced ability to recognize the perpetrator from a photographic lineup by emotional compared with neutral participants. Results from Experiment 2 suggest that while emotional participants again provide a more complete description of the perpetrator, they are less able than their neutral counterparts to recognize the perpetrator from a photographic lineup. Results are discussed in terms of a retrieval motivation hypothesis of negative emotional experience and the possible consequences for eyewitness testimony. PsycINFO Database Record (c) 2013 APA, all rights reserved.

  7. Stories from the field: students' descriptions of gender discrimination and sexual harassment during medical school.

    PubMed

    Witte, Florence M; Stratton, Terry D; Nora, Lois Margaret

    2006-07-01

    Previous studies have documented the prevalence of gender discrimination and sexual harassment during medical training, but very few have examined the behaviors that students perceive as discriminatory or harassing. The authors addressed this lack of information by examining graduating medical students' written descriptions of personal experiences with such behaviors during medical school. The authors reviewed the responses of graduating seniors at 12 U.S. medical schools to a questionnaire, administered in 2001-02, that asked them to provide written descriptions of their personal experiences with gender discrimination and sexual harassment. Seven response categories were created on the basis of recurring themes: educational inequalities; stereotypical comments; sexual overtures; offensive, embarrassing, or sexually explicit comments; inappropriate touching; sexist remarks; and not classifiable. The three authors examined the students' written accounts and placed each into one or more of the categories. Of the students' responses, 290 (36.6%) contained 313 written descriptions of personal experiences that the students perceived as either discriminatory or harassing. The most frequently reported experiences involved educational inequalities; experiences in this category were reported more frequently by men than by women. All other categories of experiences were reported more frequently by women. The results support earlier findings of the prevalence of gender discrimination and sexual harassment during undergraduate medical education. Perhaps formal antiharassment policies should provide examples of unacceptable behavior that are based on categories such as those revealed by this analysis. Perhaps, too, medical students' comments could be used to develop educational interventions for physicians in supervisory positions.

  8. Influence of an Intermediate Option on the Description-Experience Gap and Information Search

    PubMed Central

    Sharma, Neha; Debnath, Shoubhik; Dutt, Varun

    2018-01-01

    Research shows that people tend to overweight small probabilities in description and underweight them in experience, thereby leading to a different pattern of choices between description and experience; a phenomenon known as the Description-Experience (DE) gap. However, little is known on how the addition of an intermediate option and contextual framing influences the DE gap and people’s search strategies. This paper tests the effects of an intermediate option and contextual framing on the DE gap and people’s search strategies, where problems require search for information before a consequential choice. In the first experiment, 120 participants made choice decisions across investment problems that differed in the absence or presence of an intermediate option. Results showed that adding an intermediate option did not reduce the DE gap on the maximizing option across a majority of problems. There were a large majority of choices for the intermediate option. Furthermore, there was an increase in switching between options due to the presence of the intermediate option. In the second experiment, 160 participants made choice decisions in problems like those presented in experiment 1; however, problems lacked the investment framing. Results replicated findings from the first experiment and showed a similar DE gap on the maximizing option in a majority of problems in both the absence and presence of the intermediate option. Again, there were a large majority of choices for the intermediate option. Also, there was an increase in switching between options due to the presence of the intermediate option. Meta-analyses revealed that the absence or presence of the intermediate option created certain differences in the strength of frequency and recency processes. Also, a single natural-mean heuristic model was able to account for the experimental results across both experiments. We discuss implications of our findings to consequential decisions made after information search. PMID:29643821

  9. Influence of an Intermediate Option on the Description-Experience Gap and Information Search.

    PubMed

    Sharma, Neha; Debnath, Shoubhik; Dutt, Varun

    2018-01-01

    Research shows that people tend to overweight small probabilities in description and underweight them in experience, thereby leading to a different pattern of choices between description and experience; a phenomenon known as the Description-Experience (DE) gap. However, little is known on how the addition of an intermediate option and contextual framing influences the DE gap and people's search strategies. This paper tests the effects of an intermediate option and contextual framing on the DE gap and people's search strategies, where problems require search for information before a consequential choice. In the first experiment, 120 participants made choice decisions across investment problems that differed in the absence or presence of an intermediate option. Results showed that adding an intermediate option did not reduce the DE gap on the maximizing option across a majority of problems. There were a large majority of choices for the intermediate option. Furthermore, there was an increase in switching between options due to the presence of the intermediate option. In the second experiment, 160 participants made choice decisions in problems like those presented in experiment 1; however, problems lacked the investment framing. Results replicated findings from the first experiment and showed a similar DE gap on the maximizing option in a majority of problems in both the absence and presence of the intermediate option. Again, there were a large majority of choices for the intermediate option. Also, there was an increase in switching between options due to the presence of the intermediate option. Meta-analyses revealed that the absence or presence of the intermediate option created certain differences in the strength of frequency and recency processes. Also, a single natural-mean heuristic model was able to account for the experimental results across both experiments. We discuss implications of our findings to consequential decisions made after information search.

  10. Solar mesosphere explorer: Experiment description

    NASA Technical Reports Server (NTRS)

    1977-01-01

    The Solar Mesosphere Explorer (SME) satellite experiments will provide a comprehensive study of atmospheric ozone and the processes which form and destroy it. Five instruments to be carried on the spacecraft will measure the ozone density and altitude distribution, monitor the incoming solar radiation, and measure other atmospheric constituents which affect ozone. The investigative approach concept, methods and procedures, preflight studies, and orbits and mission lifetime are presented. Descriptions of the instruments are also presented.

  11. Special Feature: Teaching about High Tech.

    ERIC Educational Resources Information Center

    Kopf, Michael; And Others

    1992-01-01

    Includes four articles: "Virtual Reality" (Kopf), description of its uses in computer-assisted design, architecture, and technical training; "SME (Society of Manufacturing Engineers) Robotics Contest Opens Doors to Future" (Wagner); "Superconductivity" (Canady), description of classroom demonstrations and experiments;…

  12. Electrical design of payload G-534: The Pool Boiling Experiment

    NASA Technical Reports Server (NTRS)

    Francisco, David R.

    1992-01-01

    Payload G-534, the Pool Boiling Experiment (PBE), is a Get Away Special that is scheduled to fly on the shuttle in 1992. This paper will give a brief overall description of the experiment with the main discussion being the electrical design with a detailed description of the power system and interface to the GAS electronics. The batteries used and their interface to the experiment Power Control Unit (PCU) and GAS electronics will be examined. The design philosophy for the PCU will be discussed in detail. The criteria for selection of fuses, relays, power semiconductors and other electrical components along with grounding and shielding policy for the entire experiment will be presented. The intent of this paper is to discuss the use of military tested parts and basic design guidelines to build a quality experiment for minimal additional cost.

  13. Descriptions of Space Processing Applications Rocket (SPAR) experiments

    NASA Technical Reports Server (NTRS)

    Naumann, R. J. (Editor)

    1979-01-01

    The experiments for all the Space Processing Applications Rocket experiments, including those flown on previous Space Processing flights as well as those under development for future flights are described. The experiment objective, rationale, approach, and results or anticipated results are summarized.

  14. Boulder Experiments Scrapook. A Description of How the Student and Professional Staff of the S.A.D.M.E.S.S. Project Planned and Put On a Community Environmental Fair.

    ERIC Educational Resources Information Center

    Social Science Education Consortium, Inc., Boulder, CO.

    This Scrapbook is a description of how eight 12th grade students, with help from the professional staff of the Social Science Education Consortium, planned and put on a community environmental fair in Boulder, Colorado. The Boulder Experiments Fair grew out of an environmental education project conducted by SSEC and funded by the Office of…

  15. The effects of verbal descriptions on performance in lineups and showups.

    PubMed

    Wilson, Brent M; Seale-Carlisle, Travis M; Mickes, Laura

    2018-01-01

    Verbally describing a face has been found to impair subsequent recognition of that face from a photo lineup, a phenomenon known as the verbal overshadowing effect (Schooler & Engstler-Schooler, 1990). Recently, a large direct replication study successfully reproduced that original finding (Alogna et al., 2014). However, in both the original study and the replication studies, memory was tested using only target-present lineups (i.e., lineups containing the previously seen target face), making it possible to compute the correct identification rate (correct ID rate; i.e., the hit rate) but not the false identification rate (false ID rate; i.e., the false alarm rate). Thus, the lower correct ID rate for the verbal condition could reflect either reduced discriminability or a conservative criterion shift relative to the control condition. In four verbal overshadowing experiments reported here, we measured both correct ID rates and false ID rates using photo lineups (Experiments 1 and 2) or single-photo showups (Experiments 3 and 4). The experimental manipulation (verbally describing the face or not) occurred either immediately after encoding (Experiments 1 and 3) or 20-min after encoding (Experiments 2 and 4). In the immediate condition, discriminability did not differ between groups, but in the delayed condition, discriminability was lower in the verbal description group (i.e., a verbal overshadowing effect was observed). A fifth experiment found that the effect of the immediate-versus-delayed manipulation may be attributable to a change in the content of verbal descriptions, with the ratio of diagnostic to generic facial features in the descriptions decreasing as delay increases. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  16. Super-family P2 C-96-125 observed by Japan-URSS Joint Emulsion Chamber Experiment

    NASA Technical Reports Server (NTRS)

    Shibuya, E. H.

    1985-01-01

    A detailed description of the event detected in the second chamber of Japan-URSS Collaboration is presented. A preliminary description was already published and from that time a careful microscopic scanning was carried out.

  17. Kisilidjan hf - A unique diatomite plant

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Sigurdsson, F.

    This paper gives a short description of Kisilidjan hf. (The Icelandic Diatomite Plant, Ltd.), a description of the production, the use of geothermal steam in the plant, steam supply, steam use, steam price, experience associated with the use of steam, and some conclusions.

  18. Feedback produces divergence from prospect theory in descriptive choice.

    PubMed

    Jessup, Ryan K; Bishara, Anthony J; Busemeyer, Jerome R

    2008-10-01

    A recent study demonstrated that individuals making experience-based choices underweight small probabilities, in contrast to the overweighting observed in a typical descriptive paradigm. We tested whether trial-by-trial feedback in a repeated descriptive paradigm would engender choices more correspondent with experiential or descriptive paradigms. The results of a repeated gambling task indicated that individuals receiving feedback underweighted small probabilities, relative to their no-feedback counterparts. These results implicate feedback as a critical component during the decision-making process, even in the presence of fully specified descriptive information. A model comparison at the individual-subject level suggested that feedback drove individuals' decision weights toward objective probability weighting.

  19. Electrical design of Space Shuttle payload G-534: The pool boiling experiment

    NASA Technical Reports Server (NTRS)

    Francisco, David R.

    1993-01-01

    Payload G-534, the Pool Boiling Experiment (PBE), is a Get Away Special (GAS) payload that flew on the Space Shuttle Spacelab Mission J (STS 47) on September 19-21, 1992. This paper will give a brief overall description of the experiment with the main discussion being the electrical design with a detailed description of the power system and interface to the GAS electronics. The batteries used and their interface to the experiment Power Control Unit (PCU) and GAS electronics will be examined. The design philosophy for the PCU will be discussed in detail. The criteria for selection of fuses, relays, power semiconductors, and other electrical components along with grounding and shielding policy for the entire experiment are presented. The intent of this paper is to discuss the use of military tested parts and basic design guidelines to build a quality experiment for minimal additional cost.

  20. MECDAS: A distributed data acquisition system for experiments at MAMI

    NASA Astrophysics Data System (ADS)

    Krygier, K. W.; Merle, K.

    1994-02-01

    For the coincidence experiments with the three spectrometer setup at MAMI an experiment control and data acquisition system has been built and was put successfully into final operation in 1992. MECDAS is designed as a distributed system using communication via Ethernet and optical links. As the front end, VME bus systems are used for real time purposes and direct hardware access via CAMAC, Fastbus or VMEbus. RISC workstations running UNIX are used for monitoring, data archiving and online and offline analysis of the experiment. MECDAS consists of several fixed programs and libraries, but large parts of readout and analysis can be configured by the user. Experiment specific configuration files are used to generate efficient and powerful code well adapted to special problems without additional programming. The experiment description is added to the raw collection of partially analyzed data to get self-descriptive data files.

  1. Supplement to the December 1974 Space Investigation Documentation System (SIDS) report

    NASA Technical Reports Server (NTRS)

    1975-01-01

    A listing and brief description of spacecraft and experiments designed to update the December 1974 Space Investigations Documentation System (SIDS) report to March 31, 1975 was presented. The information is given in two sections. In the first, spacecraft and experiment descriptions are sorted by spacecraft common name. Within each spacecraft lising, experiments are sorted by the principal investigator's or team leader's last name. Each spacecraft entry heading contains the spacecraft common name, alternate names, NSSDC ID code, last reported state of the spacecraft, actual or planned launch date, weight, launch site and vehicle, sponsor, orbit parameters, personnel. Each experiment entry heading contains the experiment name, NSSDC ID code, last reported status, the Office of Space Science (OSS) division, the relevant SIDS disciplines, personnel. In the second, all spacecraft and experiment names described in the previous section and in the December 1974 report are sorted out.

  2. Meaning of bereavement among older African American widows.

    PubMed

    Rodgers, Laura S

    2004-01-01

    In spite of the increase in research on spousal bereavement, researchers have not specifically addressed the impact that ethnicity may have on the bereavement experience. The results of this descriptive phenomenological study increase the understanding of spousal bereavement among older African American widows. Storytelling was at the heart of every participant's description of her bereavement experience. Six themes were identified: awareness of death, care giving, getting through, moving on, changing feelings, and financial security. For nurses to effectively intervene in the lives of bereaved older African American widows, they must consider each widow's culture, heritage, and lived experiences, which can be ascertained through eliciting and listening to the widow's life stories.

  3. Microwave remote sensing of snow experiment description and preliminary results

    NASA Technical Reports Server (NTRS)

    Ulaby, F. T. (Principal Investigator); Stiles, W. H.; Hanson, B. C.

    1977-01-01

    The active and passive microwave responses to snow were investigated at a site near Steamboat Springs, Colorado during the February and March winter months. The microwave equipment was mounted atop truck-mounted booms. Data were acquired at numerous frequencies, polarizations, and angles of incidence for a variety of snow conditions. The experiment description, the characteristics of the microwave and ground truth instruments, and the results of a preliminary analysis of a small portion of the total data volume acquired in Colorado are documented.

  4. Methods of feminist family therapy supervision.

    PubMed

    Prouty, A M; Thomas, V; Johnson, S; Long, J K

    2001-01-01

    Although feminist family therapy has been studied and practiced for more than 20 years, writing about feminist supervision in family therapy has been limited. Three supervision methods emerged from a qualitative study of the experiences of feminist family therapy supervisors and the therapists they supervised: The supervision contract, collaborative methods, and hierarchical methods. In addition to a description of the participants' experiences of these methods, we discuss their fit with previous theoretical descriptions of feminist supervision and offer suggestions for future research.

  5. Advisory Committee on human radiation experiments. Final report, Supplemental Volume 2. Sources and documentation

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    NONE

    This volume and its appendixes supplement the Advisory Committee`s final report by reporting how we went about looking for information concerning human radiation experiments and intentional releases, a description of what we found and where we found it, and a finding aid for the information that we collected. This volume begins with an overview of federal records, including general descriptions of the types of records that have been useful and how the federal government handles these records. This is followed by an agency-by-agency account of the discovery process and descriptions of the records reviewed, together with instructions on how tomore » obtain further information from those agencies. There is also a description of other sources of information that have been important, including institutional records, print resources, and nonprint media and interviews. The third part contains brief accounts of ACHRE`s two major contemporary survey projects (these are described in greater detail in the final report and another supplemental volume) and other research activities. The final section describes how the ACHRE information-nation collections were managed and the records that ACHRE created in the course of its work; this constitutes a general finding aid for the materials deposited with the National Archives. The appendices provide brief references to federal records reviewed, descriptions of the accessions that comprise the ACHRE Research Document Collection, and descriptions of the documents selected for individual treatment. Also included are an account of the documentation available for ACHRE meetings, brief abstracts of the almost 4,000 experiments individually described by ACHRE staff, a full bibliography of secondary sources used, and other information.« less

  6. The Student Experience of Community-Based Research: An Autoethnography

    ERIC Educational Resources Information Center

    Ingman, Benjamin C.

    2016-01-01

    This autoethnography provides a description and thematic illustration of the student experience of a community-based research (CBR) course and partnership. Through evaluating personal experiences with CBR, the author identified three qualities of meaningful CBR experiences: trust, indeterminacy, and emotion. These qualities are explored, and…

  7. Applications Technology Satellite and Communications Technology Satellite user experiments for 1967 - 1980 reference book, volume 1

    NASA Technical Reports Server (NTRS)

    Engler, N. A.; Nash, J. F.; Strange, J. D.

    1980-01-01

    A description of each of the satellites is given and a brief summary of each user experiment is presented. A Cross Index of User Experiments sorted by various parameters and a listing of keywords versus Experiment Number are presented.

  8. The Global Ocean Data Assimilation Experiment (GODAE)

    NASA Astrophysics Data System (ADS)

    Le Traon, P.; Smith, N.

    The Global Ocean Data Assimilation Experiment (GODAE) will conduct its main demonstration phase from 2003 to 2005. From 2003 to 2005, operational and research institutions from Australia, Japan, United States, United Kingdom, France and Norway will be performing global oceanic data assimilation and ocean forecast in order to provide regular and comprehensive descriptions of ocean fields such as temperature, salinity and currents at high temporal and spatial resolution. A central objective of GODAE is to provide an integrated description that combines remote sensing data, in-situ data and models through data assimilation. Climate and seasonal forecasting, navy applications, marine safety, fisheries, the offshore industry and management of shelf/coastal areas are among the expected beneficiaries of GODAE. The integrated description of the ocean that GODAE will provide will also be highly beneficial to the research community. An overview of GODAE will be given; we will detail the GODAE objectives and strategy and the way it is implemented as an international experiment. Results from first pre-operational or prototype systems will finally be shown.

  9. The Role of Aspiration Level in Risky Choice: A Comparison of Cumulative Prospect Theory and SP/A Theory.

    PubMed

    Lopes; Oden

    1999-06-01

    In recent years, descriptive models of risky choice have incorporated features that reflect the importance of particular outcome values in choice. Cumulative prospect theory (CPT) does this by inserting a reference point in the utility function. SP/A (security-potential/aspiration) theory uses aspiration level as a second criterion in the choice process. Experiment 1 compares the ability of the CPT and SP/A models to account for the same within-subjects data set and finds in favor of SP/A. Experiment 2 replicates the main finding of Experiment 1 in a between-subjects design. The final discussion brackets the SP/A result by showing the impact on fit of both decreasing and increasing the number of free parameters. We also suggest how the SP/A approach might be useful in modeling investment decision making in a descriptively more valid way and conclude with comments on the relation between descriptive and normative theories of risky choice. Copyright 1999 Academic Press.

  10. Face recognition and description abilities in people with mild intellectual disabilities.

    PubMed

    Gawrylowicz, Julie; Gabbert, Fiona; Carson, Derek; Lindsay, William R; Hancock, Peter J B

    2013-09-01

    People with intellectual disabilities (ID) are as likely as the general population to find themselves in the situation of having to identify and/or describe a perpetrator's face to the police. However, limited verbal and memory abilities in people with ID might prevent them to engage in standard police procedures. Two experiments examined face recognition and description abilities in people with mild intellectual disabilities (mID) and compared their performance with that of people without ID. Experiment 1 used three old/new face recognition tasks. Experiment 2 consisted of two face description tasks, during which participants had to verbally describe faces from memory and with the target in view. Participants with mID performed significantly poorer on both recognition and recall tasks than control participants. However, their group performance was better than chance and they showed variability in performance depending on the measures introduced. The practical implications of these findings in forensic settings are discussed. © 2013 John Wiley & Sons Ltd.

  11. Qualitative and Quantitative Features of Music Reported to Support Peak Mystical Experiences during Psychedelic Therapy Sessions

    PubMed Central

    Barrett, Frederick S.; Robbins, Hollis; Smooke, David; Brown, Jenine L.; Griffiths, Roland R.

    2017-01-01

    Psilocybin is a classic (serotonergic) hallucinogen (“psychedelic” drug) that may occasion mystical experiences (characterized by a profound feeling of oneness or unity) during acute effects. Such experiences may have therapeutic value. Research and clinical applications of psychedelics usually include music listening during acute drug effects, based on the expectation that music will provide psychological support during the acute effects of psychedelic drugs, and may even facilitate the occurrence of mystical experiences. However, the features of music chosen to support the different phases of drug effects are not well-specified. As a result, there is currently neither real guidance for the selection of music nor standardization of the music used to support clinical trials with psychedelic drugs across various research groups or therapists. A description of the features of music found to be supportive of mystical experience will allow for the standardization and optimization of the delivery of psychedelic drugs in both research trials and therapeutic contexts. To this end, we conducted an anonymous survey of individuals with extensive experience administering psilocybin or psilocybin-containing mushrooms under research or therapeutic conditions, in order to identify the features of commonly used musical selections that have been found by therapists and research staff to be supportive of mystical experiences within a psilocybin session. Ten respondents yielded 24 unique recommendations of musical stimuli supportive of peak effects with psilocybin, and 24 unique recommendations of musical stimuli supportive of the period leading up to a peak experience. Qualitative analysis (expert rating of musical and music-theoretic features of the recommended stimuli) and quantitative analysis (using signal processing and music-information retrieval methods) of 22 of these stimuli yielded a description of peak period music that was characterized by regular, predictable, formulaic phrase structure and orchestration, a feeling of continuous movement and forward motion that slowly builds over time, and lower perceptual brightness when compared to pre peak music. These results provide a description of music that may be optimally supportive of peak psychedelic experiences. This description can be used to guide the selection and composition of music for future psychedelic research and therapy sessions. PMID:28790944

  12. Qualitative and Quantitative Features of Music Reported to Support Peak Mystical Experiences during Psychedelic Therapy Sessions.

    PubMed

    Barrett, Frederick S; Robbins, Hollis; Smooke, David; Brown, Jenine L; Griffiths, Roland R

    2017-01-01

    Psilocybin is a classic (serotonergic) hallucinogen ("psychedelic" drug) that may occasion mystical experiences (characterized by a profound feeling of oneness or unity) during acute effects. Such experiences may have therapeutic value. Research and clinical applications of psychedelics usually include music listening during acute drug effects, based on the expectation that music will provide psychological support during the acute effects of psychedelic drugs, and may even facilitate the occurrence of mystical experiences. However, the features of music chosen to support the different phases of drug effects are not well-specified. As a result, there is currently neither real guidance for the selection of music nor standardization of the music used to support clinical trials with psychedelic drugs across various research groups or therapists. A description of the features of music found to be supportive of mystical experience will allow for the standardization and optimization of the delivery of psychedelic drugs in both research trials and therapeutic contexts. To this end, we conducted an anonymous survey of individuals with extensive experience administering psilocybin or psilocybin-containing mushrooms under research or therapeutic conditions, in order to identify the features of commonly used musical selections that have been found by therapists and research staff to be supportive of mystical experiences within a psilocybin session. Ten respondents yielded 24 unique recommendations of musical stimuli supportive of peak effects with psilocybin, and 24 unique recommendations of musical stimuli supportive of the period leading up to a peak experience. Qualitative analysis (expert rating of musical and music-theoretic features of the recommended stimuli) and quantitative analysis (using signal processing and music-information retrieval methods) of 22 of these stimuli yielded a description of peak period music that was characterized by regular, predictable, formulaic phrase structure and orchestration, a feeling of continuous movement and forward motion that slowly builds over time, and lower perceptual brightness when compared to pre peak music. These results provide a description of music that may be optimally supportive of peak psychedelic experiences. This description can be used to guide the selection and composition of music for future psychedelic research and therapy sessions.

  13. Investigating the dimension of time: findings from a modified grounded theory study about clients' experiences and descriptions of temporality or time within music therapy.

    PubMed

    Daveson, Barbara; O'Callaghan, Clare

    2011-01-01

    Many references to time or temporality are located within music therapy literature, however little research has been completed regarding this phenomenon. Findings from a modified grounded theory study about clients' experiences and descriptions of time within the context of music therapy are presented here. The study was informed by the constructivist-interpretive paradigm and a grounded-descriptive statement finding resulted. A 2-staged research methodology was used, comprising a deductive-inductive content analysis of information from the public domain, followed by data-mining of information from a minimum of 160 clients and analysis of data from at least 43 of these 160 clients. Information regarding memory experiences, the duration of music therapy effects, recall and retrieval, and experiences of time are identified. Implications for practice are emphasized, in particular the following is stressed (a) the importance of time orientation and temporal connectedness in relation to identity development, (b) temporal strategies within music experience to assist integration, recall, and retrieval of information, and (c) the importance of and the elements involved in time modification. New explanations for music therapy phenomena are shared, and areas for research highlighted. Benefits of using time dynamically to aid therapeutic process are proposed, and it is concluded that temporal experience within the context of music therapy is important in relation to both practice and research.

  14. The boundaries of instance-based learning theory for explaining decisions from experience.

    PubMed

    Gonzalez, Cleotilde

    2013-01-01

    Most demonstrations of how people make decisions in risky situations rely on decisions from description, where outcomes and their probabilities are explicitly stated. But recently, more attention has been given to decisions from experience where people discover these outcomes and probabilities through exploration. More importantly, risky behavior depends on how decisions are made (from description or experience), and although prospect theory explains decisions from description, a comprehensive model of decisions from experience is yet to be found. Instance-based learning theory (IBLT) explains how decisions are made from experience through interactions with dynamic environments (Gonzalez et al., 2003). The theory has shown robust explanations of behavior across multiple tasks and contexts, but it is becoming unclear what the theory is able to explain and what it does not. The goal of this chapter is to start addressing this problem. I will introduce IBLT and a recent cognitive model based on this theory: the IBL model of repeated binary choice; then I will discuss the phenomena that the IBL model explains and those that the model does not. The argument is for the theory's robustness but also for clarity in terms of concrete effects that the theory can or cannot account for. Copyright © 2013 Elsevier B.V. All rights reserved.

  15. Biological satellite Kosmos-936

    NASA Technical Reports Server (NTRS)

    Vedeshin, L. A.

    1978-01-01

    A description is given of physiological experiments performed on the biological satellite Kosmos-936. Other experiments to determine the electrostatic and dielectric responses to the effects of cosmic radiation are discussed.

  16. Harwell high pressure heat transfer loop

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Bennett, A.W.; Keeys, R.K.F.

    1967-12-15

    A detailed description is presented of the Harwell (Chemical Engineering and Process Technology Division) high pressure, steam-water heat transfer loop; this description is aimed at supplementing the information given in reports on individual experiments. The operating instructions for the loop are given in an appendix. (auth)

  17. Emergency Nursing--N421.

    ERIC Educational Resources Information Center

    Tate, Elizabeth

    A description is provided of "Emergency Nursing," an undergraduate nursing course designed to provide a concentrated learning experience in emergency care. The description first provides information on the curriculum placement of the course, allotment of class time, and the targeted student population, followed by a glossary of relevant…

  18. A Phenomenological Research Study of the Experience of Teachers in the Virgin Islands Teacher Enhancement in Mathematics and Science Project

    NASA Astrophysics Data System (ADS)

    Thurland, Karen C.

    The purpose of conducting this study was to describe the experience of elementary teachers in a mathematics and science staff development project in the U.S. Virgin Islands. The focus of this study was to describe the meaning teachers attribute to their experience in this three year project, in which many of the national mathematics and science reform efforts were implemented. A phenomenological approach was used in order to develop a complete picture of the teachers' experiences. Data collection consisted of interviews with seven elementary teachers. The data were subjective descriptions of the teachers pertaining to the initial summer institute, the follow-up sessions, and the new innovative methods. The transcendental phenomenological model was used. The textural and structural themes included enhanced learning and changes in teaching practice, and interactions with colleagues. From these themes, individual and composite textual descriptions of the experience of the teacher participants were developed. The synthesis of those descriptions illuminated the meanings and essence of their lived experience. The findings indicate that the essence of the experience was the development of a positive attitude towards the teaching of math and science. The teachers gained confidence in their ability to motivate students with the inquiry method and taught more math and science. The implications for the Virgin Islands Department of Education include establishing a partnership with the local university to offer staff development training in mathematics and science and to conduct evaluations of its training efforts.

  19. The Clustering of High-redshift (2.9 ≤ z ≤ 5.1) Quasars in SDSS Stripe 82

    NASA Astrophysics Data System (ADS)

    Timlin, John D.; Ross, Nicholas P.; Richards, Gordon T.; Myers, Adam D.; Pellegrino, Andrew; Bauer, Franz E.; Lacy, Mark; Schneider, Donald P.; Wollack, Edward J.; Zakamska, Nadia L.

    2018-05-01

    We present a measurement of the two-point autocorrelation function of photometrically selected high-z quasars over ∼100 deg2 on the Sloan Digital Sky Survey Stripe 82 field. Selection is performed using three machine-learning algorithms in a six-dimensional optical/mid-infrared color space. Optical data from the Sloan Digital Sky Survey are combined with overlapping deep mid-infrared data from the Spitzer IRAC Equatorial Survey and the Spitzer-HETDEX Exploratory Large-Area survey. Our selection algorithms are trained on the colors of known high-z quasars. The selected quasar sample consists of 1378 objects and contains both spectroscopically confirmed quasars and photometrically selected quasar candidates. These objects span a redshift range of 2.9 ≤ z ≤ 5.1 and are generally fainter than i = 20.2, a regime that has lacked sufficient number density to perform autocorrelation function measurements of photometrically classified quasars. We compute the angular correlation function of these data, marginally detecting quasar clustering. We fit a single power law with an index of δ = 1.39 ± 0.618 and amplitude of θ 0 = 0.‧71 ± 0.‧546 . A dark matter model is fit to the angular correlation function to estimate the linear bias. At the average redshift of our survey (< z> =3.38), the bias is b = 6.78 ± 1.79. Using this bias, we calculate a characteristic dark matter halo mass of 1.70–9.83× {10}12{h}-1 {M}ȯ . Our bias estimate suggests that quasar feedback intermittently shuts down the accretion of gas onto the central supermassive black hole at early times. If confirmed, these results hint at a level of luminosity dependence in the clustering of quasars at high-z.

  20. Supplement no. 1 to the January 1974 report on active and planned spacecraft and experiments

    NASA Technical Reports Server (NTRS)

    Horowitz, R.; Davis, L. R.

    1974-01-01

    Updated information and descriptions on spacecraft and experiments are listed according to spacecraft name and principle experimental investigator. A cumulative index of active and planned spacecraft and experiments is provided; bar graph indexes for electromagnetic radiation experiments are included in table form.

  1. Aircraft L-Band Balloon - Simulated Satellite Experiments Volume I: Experiment Description and Voice and Data Modem Test Results

    DOT National Transportation Integrated Search

    1975-10-01

    This report details the result of an experiment performed by the Transportation Systems Center of the Department of Transportation to evaluate candidate voice and data modulation systems for use in an L-Band Air Traffic Control System. The experiment...

  2. Truth and Consequences: Believing as Adaptive Behavior.

    ERIC Educational Resources Information Center

    Sawyer, Llewlee L.

    A theoretical cornerstone of cognitive therapy is the idea that the relationship between experience and cognition, the interpretation of experience, is recursive. Human beings can respond to a given experience with more than one description and/or explanation of the experience and these alternative interpretations can have different experiential…

  3. Red Sea Outflow Experiment (REDSOX): DLD2 RAFOS Float Data Report February 2001 - March 2003

    DTIC Science & Technology

    2005-01-01

    1 2. Description of the DLD2 Float and Dual-Release System ................................................................... 2 3. Sound Sources...processing are described in detail. 2. Description of the DLD2 Float and Dual-Release System The DLD2 is a second-generation RAFOS (Ranging And Fixing Of...Sound) float with several improvements over the traditional RAFOS float (see Rossby et al., 1986, for a complete description of the RAFOS system ). A

  4. Older Adult Spouses with Multiple Chronic Conditions: Challenges, Rewards, and Coping Strategies.

    PubMed

    Peacock, Shelley; Sethi, Bharati; Williams, Allison; Duggleby, Wendy; Bayly, Melanie; Swindle, Jenny; Ploeg, Jenny; Markle-Reid, Maureen

    2017-06-01

    There is a paucity of research exploring how spouses to older adults with multiple chronic conditions make meaning of their caregiving experience. For this study, we asked: What is the experience of spousal caregivers to persons with multiple chronic conditions? We applied Thorne's interpretive description approach, interviewing 18 spouses who provided a rich description of their caregiving experience; interviews were transcribed verbatim and thematically analysed. Themes were categorized according to challenges encountered, rewards gleaned, and sustaining strategies employed by participants in caregiving to their spouse with multiple chronic conditions. Unique findings relate to the challenges inherent in decision-making within the context of multiple chronic conditions. This article begins to address the gap in the literature regarding the caregiving experience within the context of multiple chronic conditions.

  5. A Metadata description of the data in "A metabolomic comparison of urinary changes in type 2 diabetes in mouse, rat, and human."

    PubMed Central

    2011-01-01

    Background Metabolomics is a rapidly developing functional genomic tool that has a wide range of applications in diverse fields in biology and medicine. However, unlike transcriptomics and proteomics there is currently no central repository for the depositing of data despite efforts by the Metabolomics Standard Initiative (MSI) to develop a standardised description of a metabolomic experiment. Findings In this manuscript we describe how the MSI description has been applied to a published dataset involving the identification of cross-species metabolic biomarkers associated with type II diabetes. The study describes sample collection of urine from mice, rats and human volunteers, and the subsequent acquisition of data by high resolution 1H NMR spectroscopy. The metadata is described to demonstrate how the MSI descriptions could be applied in a manuscript and the spectra have also been made available for the mouse and rat studies to allow others to process the data. Conclusions The intention of this manuscript is to stimulate discussion as to whether the MSI description is sufficient to describe the metadata associated with metabolomic experiments and encourage others to make their data available to other researchers. PMID:21801423

  6. Mixed valent metals

    NASA Astrophysics Data System (ADS)

    Riseborough, P. S.; Lawrence, J. M.

    2016-08-01

    We review the theory of mixed-valent metals and make comparison with experiments. A single-impurity description of the mixed-valent state is discussed alongside the description of the nearly-integer valent or Kondo limit. The degeneracy N of the f-shell plays an important role in the description of the low-temperature Fermi-liquid state. In particular, for large N, there is a rapid cross-over between the mixed-valent and the Kondo limit when the number of f electrons is changed. We discuss the limitations on the application of the single-impurity description to concentrated compounds such as those caused by the saturation of the Kondo effect and those due to the presence of magnetic interactions between the impurities. This discussion is followed by a description of a periodic lattice of mixed-valent ions, including the role of the degeneracy N. The article concludes with a comparison of theory and experiment. Topics covered include the single-impurity Anderson model, Luttinger’s theorem, the Friedel sum rule, the Schrieffer-Wolff transformation, the single-impurity Kondo model, Kondo screening, the Wilson ratio, local Fermi-liquids, Fermi-liquid sum rules, the Noziéres exhaustion principle, Doniach’s diagram, the Anderson lattice model, the Slave-Boson method, etc.

  7. Mixed valent metals

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Riseborough, P. S.; Lawrence, Jon M.

    Here, we review the theory of mixed-valent metals and make comparison with experiments. A single-impurity description of the mixed-valent state is discussed alongside the description of the nearly-integer valent or Kondo limit. The degeneracy N of the f-shell plays an important role in the description of the low-temperature Fermi-liquid state. In particular, for large N, there is a rapid cross-over between the mixed-valent and the Kondo limit when the number of f electrons is changed. We discuss the limitations on the application of the single-impurity description to concentrated compounds such as those caused by the saturation of the Kondo effectmore » and those due to the presence of magnetic interactions between the impurities. This discussion is followed by a description of a periodic lattice of mixed-valent ions, including the role of the degeneracy N. The article concludes with a comparison of theory and experiment. Topics covered include the single-impurity Anderson model, Luttinger's theorem, the Friedel sum rule, the Schrieffer–Wolff transformation, the single-impurity Kondo model, Kondo screening, the Wilson ratio, local Fermi-liquids, Fermi-liquid sum rules, the Nozieres exhaustion principle, Doniach's diagram, the Anderson lattice model, the Slave-Boson method, etc.« less

  8. Mixed valent metals

    DOE PAGES

    Riseborough, P. S.; Lawrence, Jon M.

    2016-07-04

    Here, we review the theory of mixed-valent metals and make comparison with experiments. A single-impurity description of the mixed-valent state is discussed alongside the description of the nearly-integer valent or Kondo limit. The degeneracy N of the f-shell plays an important role in the description of the low-temperature Fermi-liquid state. In particular, for large N, there is a rapid cross-over between the mixed-valent and the Kondo limit when the number of f electrons is changed. We discuss the limitations on the application of the single-impurity description to concentrated compounds such as those caused by the saturation of the Kondo effectmore » and those due to the presence of magnetic interactions between the impurities. This discussion is followed by a description of a periodic lattice of mixed-valent ions, including the role of the degeneracy N. The article concludes with a comparison of theory and experiment. Topics covered include the single-impurity Anderson model, Luttinger's theorem, the Friedel sum rule, the Schrieffer–Wolff transformation, the single-impurity Kondo model, Kondo screening, the Wilson ratio, local Fermi-liquids, Fermi-liquid sum rules, the Nozieres exhaustion principle, Doniach's diagram, the Anderson lattice model, the Slave-Boson method, etc.« less

  9. Simulation Experiment Description Markup Language (SED-ML) Level 1 Version 2.

    PubMed

    Bergmann, Frank T; Cooper, Jonathan; Le Novère, Nicolas; Nickerson, David; Waltemath, Dagmar

    2015-09-04

    The number, size and complexity of computational models of biological systems are growing at an ever increasing pace. It is imperative to build on existing studies by reusing and adapting existing models and parts thereof. The description of the structure of models is not sufficient to enable the reproduction of simulation results. One also needs to describe the procedures the models are subjected to, as recommended by the Minimum Information About a Simulation Experiment (MIASE) guidelines. This document presents Level 1 Version 2 of the Simulation Experiment Description Markup Language (SED-ML), a computer-readable format for encoding simulation and analysis experiments to apply to computational models. SED-ML files are encoded in the Extensible Markup Language (XML) and can be used in conjunction with any XML-based model encoding format, such as CellML or SBML. A SED-ML file includes details of which models to use, how to modify them prior to executing a simulation, which simulation and analysis procedures to apply, which results to extract and how to present them. Level 1 Version 2 extends the format by allowing the encoding of repeated and chained procedures.

  10. Simulation Experiment Description Markup Language (SED-ML) Level 1 Version 2.

    PubMed

    Bergmann, Frank T; Cooper, Jonathan; Le Novère, Nicolas; Nickerson, David; Waltemath, Dagmar

    2015-06-01

    The number, size and complexity of computational models of biological systems are growing at an ever increasing pace. It is imperative to build on existing studies by reusing and adapting existing models and parts thereof. The description of the structure of models is not sufficient to enable the reproduction of simulation results. One also needs to describe the procedures the models are subjected to, as recommended by the Minimum Information About a Simulation Experiment (MIASE) guidelines. This document presents Level 1 Version 2 of the Simulation Experiment Description Markup Language (SED-ML), a computer-readable format for encoding simulation and analysis experiments to apply to computational models. SED-ML files are encoded in the Extensible Markup Language (XML) and can be used in conjunction with any XML-based model encoding format, such as CellML or SBML. A SED-ML file includes details of which models to use, how to modify them prior to executing a simulation, which simulation and analysis procedures to apply, which results to extract and how to present them. Level 1 Version 2 extends the format by allowing the encoding of repeated and chained procedures.

  11. Experiences of adolescents living with cancer: A descriptive qualitative study.

    PubMed

    Ang, Sin Hui; Koh, Serena Siew Lin; Lee, Xiu Hua Hideka Tamamura; Shorey, Shefaly

    2018-01-01

    This study aimed to explore the experiences of adolescents from Singapore, aged 10-18 years old, living with cancer and their perceptions on how their psychosocial outcomes can be improved. A descriptive qualitative study design was used. Convenience sampling was used to recruit 10 participants from a pediatric oncology ward in a Singapore hospital. Individual semi-structured interviews were conducted. Thematic analysis was used to analyze the data. Five major themes emerged: (1) experience of physical symptoms, (2) emotional response to their condition, (3) changes in social dynamics, and (4) falling behind in academics. The psychosocial outcomes of Singaporean adolescents with cancer could be improved by thorough pain assessments and creating a more conducive hospital environment.

  12. Registered Nurses' Experiences With Individuals With Low Health Literacy: A Qualitative Descriptive Study.

    PubMed

    Toronto, Coleen E; Weatherford, Barbara

    2016-01-01

    The nursing profession is charged to provide effective communication and education to patients. A qualitative descriptive study that explored what nurses experience when interacting with patients thought to possess low health literacy was performed. Findings suggest that nurses are promoting health literacy using several evidence-based strategies. Major barriers encountered by nurses were limited cultural and linguistic resources within their healthcare organizations. This study provides nursing professional development specialists information about the educational gaps of nurses in practice related to health literacy and the identification of systems barriers.

  13. Office of Aeronautics and Space Technology preliminary requirements for space science and applications platform studies

    NASA Technical Reports Server (NTRS)

    1979-01-01

    Needs and requirements for a free flying space science and applications platform to host groupings of compatible, extended mission experiments in earth orbit are discussed. A payload model which serves to define a typical set of mission requirements in the form of a descriptive data base is presented along with experiment leval and group level data summarizations and flight schedules. The payload descriptions are grouped by technology into the following categories: communications, materials (long term effect upon), materials technology development, power, sensors, and thermal control.

  14. Community Science Workshops: Building a Bridge to Science for Urban Youth: A Descriptive Look at CSWs

    ERIC Educational Resources Information Center

    Inverness Research Associates, 2007

    2007-01-01

    This paper takes a descriptive look at Community Science Workshops (CSWs). This paper discusses what CSW is, how it arose and spread, how local CSWs are structured and led, and what programs and experiences they offer to youth. (Contains 2 footnotes.)

  15. Singer Perceptions of Collegiate Mid-Level Choral Experiences: A Descriptive Study

    ERIC Educational Resources Information Center

    Major, Marci L.; Dakon, Jacob M.

    2016-01-01

    In this descriptive study, researchers surveyed choristers (N = 630) from 16 mid-level collegiate choirs nationwide to investigate their perceptions and behaviors as they related to the strategies used by directors to facilitate ensemble identity. Also investigated were the factors affecting choristers' dedication to choir and their intentions…

  16. 76 FR 40372 - Submission for OMB Review; Comment Request

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-08

    ... OMB Review; Comment Request Title: Descriptive Study of Early Head Start (Early Head Start Family and...-natal cohort of the Descriptive Study of Early Head Start (Early Head Start Family and Child Experiences... Children and Families, Office of Planning, Research and Evaluation, 370 L'Enfant Promenade, SW., Washington...

  17. A description of the reformatted spring small grains labeling procedure used in test 2, part 2 of the US/Canada wheat and barley exploratory experiment

    NASA Technical Reports Server (NTRS)

    Palmer, W. F.; Magness, E. R. (Principal Investigator)

    1981-01-01

    The reformatted spring small grains labeling procedure is designed to be used for assigning crop identification labels to a predetermined and selected number of dots. The development and description of this procedure is presented.

  18. Faculty Perceptions of Teaching Nontraditional College Students: A Qualitative Single Descriptive Case Study

    ERIC Educational Resources Information Center

    Spedding, Lindsey

    2016-01-01

    Nontraditional students bring to the classroom diversity in age, culture, experience, knowledge, and preparedness. The risk factors that circumstantially define nontraditional students outside the classroom result in transferrable challenges within the classroom. The purpose of this single descriptive case study was to explore and understand…

  19. Identifying specific erotic cues in sexual deviations by audiotaped descriptions.

    PubMed Central

    Abel, G G; Blanchard, E B; Barlow, D H; Mavissakalian, M

    1975-01-01

    Using audiotaped descriptions of sexual experiences and a direct measure of penile erection, it is possible to specify more precisely erotic cues in sexual deviates. Results indicated that such cues are highly idiosyncratic. Some tentative conclusions and suggested application for the method are discussed. PMID:1184490

  20. Man and Society

    ERIC Educational Resources Information Center

    Lyons, Thomas T.

    1972-01-01

    Description of three years' experience with an interdisciplinary, field experience course, Man & Society," instituted at the Phillips Academy in 1970. It involved comparative societal study with a nine-week working and living experience in Boston and Mexico, a combination of student, teacher, and joint leadership, group discussion, and joint…

  1. Death and caring for dying patients: exploring first-year nursing students' descriptive experiences.

    PubMed

    Ek, Kristina; Westin, Lars; Prahl, Charlotte; Osterlind, Jane; Strang, Susann; Bergh, Ingrid; Hammarlund, Kina

    2014-10-01

    To describe first-year nursing students' experiences of witnessing death and providing end-of-life care. This study is part of a larger longitudinal project. Interviews (n=17) were conducted with nursing students at the end of their first year of education. To analyse the interviews (lived-experience descriptions), a thematic analysis, 'a search for meaning' ( Van Manen, 1997 ) was applied. The results are presented within the framework of four separate themes: (1) The thought of death is more frightening than the actual experience, (2) Daring to approach the dying patient and offering something of oneself, (3) The experience of not sufficing in the face of death and (4) Being confronted with one's own feelings. Nursing students require continuous support and opportunity to reflect and discuss their experiences about caring for dying patients and confronting death throughout the entirety of their education. In addition, teachers and clinical supervisors need to give support using reflective practice to help students to develop confidence in their capacity for caring for dying patients.

  2. 45 CFR 154.215 - Submission of rate filing justification.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...) Historical and projected claims experience. (2) Trend projections related to utilization, and service or unit... increases reported in the rate increase summary. (2) Brief description of the overall experience of the...

  3. 45 CFR 154.215 - Submission of rate filing justification.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...) Historical and projected claims experience. (2) Trend projections related to utilization, and service or unit... increases reported in the rate increase summary. (2) Brief description of the overall experience of the...

  4. Childhood experiences of incarcerated male child sexual abusers.

    PubMed

    Garrett, Linda H

    2010-10-01

    While numerous efforts have been made to understand the impact of child sexual abuse, little has been done to examine the childhood experiences of those who abuse children. Child sexual abusers have been studied from quantitative perspectives using behavioral checklists, parental-bonding surveys, and sexual history questionnaires. The purpose of this study was to explore incarcerated child sexual abusers' recollections of their childhood experiences using the descriptive existential lens of phenomenology. Eight incarcerated male child sexual abusers described their childhood from existential perspectives of lived space, lived other, lived body, and lived time via face-to-face semi-structured interviews. Analysis was accomplished through the qualitative, descriptive method of Max van Manen. Rich descriptions of the participants' insights into their daily childhood life experiences that shaped their self-concepts and contributed to their adult behaviors were gathered. Four major themes were identified: (1) failure to root, (2) what you see is what you learn, (3) stupid is as stupid does, and (4) life's moments. Data from this study suggest that the experiences of childhood significantly contribute to an adult self-concept that can be distorted by the lack of a secure home space, maladaptive relationships, internalization of inappropriate behavior, and a lack of significant family development. This study explores the psychosocial and behavioral consequences of early childhood experiences. The findings support the need for family and psychological mental health nurse practitioners to be more aware of early home environments; improve their assessment of children's developing self-concept and the potential for abusive relationships.

  5. Age Differences in Descriptions of Emotional Experiences in Oneself and Others

    PubMed Central

    Löckenhoff, Corinna E.; Costa, Paul T.; Lane, Richard D.

    2018-01-01

    We analyzed language use to examine age differences in people’s representations of their own emotions as compared with those of others. Participants (N = 365, aged 18–85 years, M = 42.8, SD = 19.2) read hypothetical emotion-eliciting scenarios and described how they themselves and the social partners involved in the scenarios would feel. Compared with those of younger adults, older adults’ descriptions involved a higher frequency of positive and a lower frequency of negative emotions. Older adults were also more likely to describe a co-occurrence of positive and negative emotions, but less likely to describe the simultaneous experience of multiple negative emotions. Age effects showed similar patterns for participants’ descriptions of their own emotions as compared with those of others. We discuss the implications for theoretical accounts of emotional aging. PMID:18441270

  6. Developing an observing attitude: A qualitative analysis of meditation diaries in a MBSR clinical trial

    PubMed Central

    Kerr, Catherine E.; Josyula, Krishnapriya; Littenberg, Ronnie

    2011-01-01

    Mindfulness-based stress reduction (MBSR) is an 8-week training that is designed to teach participants mindful awareness of the present moment. In randomized clinical trials (RCTs), MBSR has demonstrated efficacy in various conditions including reducing chronic pain related distress and improving quality of life in healthy individuals. There have, however, been no qualitative studies investigating participants’ descriptions of changes experienced over multiple time-points during the course of the program. This qualitative study of a MBSR cohort (N=8 healthy individuals) in a larger RCT examined participants’ daily diary descriptions of their home-practice experiences. The study used a two-part method, combining grounded theory with a close-ended coding approach. The grounded theory analysis revealed that during the trial, all participants, to varying degrees, described moments of distress related to practice; at the end of the course, all participants who completed the training demonstrated greater detail and clarity in their descriptions, improved affect, and the emergence of an observing self. The closed-ended coding schema carried out to shed light on the development of an observing self, revealed that the emergence of an observing self was not related to the valence of participants’ experiential descriptions: even participants whose diaries contained predominantly negative characterizations of their experience throughout the trial were able, by the end of the trial, to demonstrate an observing, witnessing attitude towards their own distress. Conclusion Progress in MBSR may rely less on the valence of participants’ experiences and more on the way participants describe and relate to their own inner experience. PMID:21226129

  7. Development of a proto-typology of opiate overdose onset.

    PubMed

    Neale, Joanne; Bradford, Julia; Strang, John

    2017-01-01

    The time available to act is a crucial factor affecting the probable success of interventions to manage opiate overdose. We analyse opiate users' accounts of non-fatal overdose incidents to (i) construct a proto-typology of non-fatal opiate overdose onset and (ii) assess the implications for overdose management and prevention of fatalities. Re-analysis of a subset of data from a large qualitative study of non-fatal opiate overdose conducted from 1997 to 1999. Data were generated from semi-structured interviews undertaken with opiate users who had experienced a non-fatal overdose in the previous 24 hours. Forty-four participants (30 men; 14 women; aged 16-47 years) provided sufficient information for in-depth analysis. Data relating to 'memory of the moment of overdose', 'time to loss of consciousness' and 'subjective description of the overdose experience' were scrutinised using iterative categorization. Four types of overdose onset were identified: type A 'amnesic' (n = 8), characterized by no memory, rapid loss of consciousness and no description of the overdose experience; type B 'conscious' (n = 17), characterized by some memory, sustained consciousness and a description of the overdose in terms of feeling unwell and symptomatic; type C 'instant' (n = 14), characterized by some memory, immediate loss of consciousness and no description of the overdose experience; and type D 'enjoyable' (n = 5), characterized by some memory, rapid loss of consciousness and a description of the overdose experience as pleasant or positive. The identification of different types of overdose onset highlights the complexity of overdose events, the need for a range of interventions and the challenges faced in managing incidents and preventing fatalities. Opiate overdose victims who retain consciousness for a sustained period and recognize the negative signs and symptoms of overdosing could summon help or self-administer naloxone, thus indicating that opiate overdose training should incorporate self-management strategies. © 2016 Society for the Study of Addiction.

  8. Crucial Experiments in Quantum Physics.

    ERIC Educational Resources Information Center

    Trigg, George L.

    The six experiments included in this monography are titled Blackbody Radiation, Collision of Electrons with Atoms, The Photoelectric Effect, Magnetic Properties of Atoms, The Scattering of X-Rays, and Diffraction of Electrons by a Crystal Lattice. The discussion provides historical background by giving description of the original experiments and…

  9. Experiments and Demonstrations in Smoking Education.

    ERIC Educational Resources Information Center

    Gilbert, Glen G.; Ziady, Merrie

    This document contains experiments, demonstrations, and descriptions of computer software that may be useful in smoking education. Strategies are presented so that instructors can select the ones that are appropriate for their target populations. Experiments and demonstrations on the effects of smoking presented in this book are appropriate for…

  10. On the Application of Simple Experiments to the Teaching of ChE Thermodynamics

    ERIC Educational Resources Information Center

    McNeil, Kenneth M.

    1978-01-01

    This article describes the undergraduate ChE thermodynamics course at Drexel University and the reasons for incorporating a series of laboratory experiments into the course. Included is a list of lecture topics and a description of each of the experiments. (BB)

  11. Observers' measurements in premetric electrodynamics: Time and radar length

    NASA Astrophysics Data System (ADS)

    Gürlebeck, Norman; Pfeifer, Christian

    2018-04-01

    The description of an observer's measurement in general relativity and the standard model of particle physics is closely related to the spacetime metric. In order to understand and interpret measurements, which test the metric structure of the spacetime, like the classical Michelson-Morley, Ives-Stilwell, Kennedy-Thorndike experiments or frequency comparison experiments in general, it is necessary to describe them in theories, which go beyond the Lorentzian metric structure. However, this requires a description of an observer's measurement without relying on a metric. We provide such a description of an observer's measurement of the fundamental quantities time and length derived from a premetric perturbation of Maxwell's electrodynamics and a discussion on how these measurements influence classical relativistic observables like time dilation and length contraction. Most importantly, we find that the modification of electrodynamics influences the measurements at two instances: the propagation of light is altered as well as the observer's proper time normalization. When interpreting the results of a specific experiment, both effects cannot be disentangled, in general, and have to be taken into account.

  12. Children's attention to task-relevant information accounts for relations between language and spatial cognition.

    PubMed

    Miller, Hilary E; Simmering, Vanessa R

    2018-08-01

    Children's spatial language reliably predicts their spatial skills, but the nature of this relation is a source of debate. This investigation examined whether the mechanisms accounting for such relations are specific to language use or reflect a domain-general mechanism of selective attention. Experiment 1 examined whether 4-year-olds' spatial skills were predicted by their selective attention or their adaptive language use. Children completed (a) an attention task assessing attention to task-relevant color, size, and location cues; (b) a description task assessing adaptive language use to describe scenes varying in color, size, and location; and (c) three spatial tasks. There was correspondence between the cue types that children attended to and produced across description and attention tasks. Adaptive language use was predicted by both children's attention and task-related language production, suggesting that selective attention underlies skills in using language adaptively. After controlling for age, gender, receptive vocabulary, and adaptive language use, spatial skills were predicted by children's selective attention. The attention score predicted variance in spatial performance previously accounted for by adaptive language use. Experiment 2 followed up on the attention task (Experiment 2a) and description task (Experiment 2b) from Experiment 1 to assess whether performance in the tasks related to selective attention or task-specific demands. Performance in Experiments 2a and 2b paralleled that in Experiment 1, suggesting that the effects in Experiment 1 reflected children's selective attention skills. These findings show that selective attention is a central factor supporting spatial skill development that could account for many effects previously attributed to children's language use. Copyright © 2018 Elsevier Inc. All rights reserved.

  13. ArcAtlas in the Classroom: Pattern Identification, Description, and Explanation

    ERIC Educational Resources Information Center

    DeMers, Michael N.; Vincent, Jeffrey S.

    2007-01-01

    The use of geographic information systems (GIS) in the classroom provides a robust and effective method of teaching the primary spatial skills of identification, description, and explanation of spatial pattern. A major handicap for the development of GIS-based learning experiences, especially for non-GIS specialist educators, is the availability…

  14. Redesign of Library Workflows: Experimental Models for Electronic Resource Description.

    ERIC Educational Resources Information Center

    Calhoun, Karen

    This paper explores the potential for and progress of a gradual transition from a highly centralized model for cataloging to an iterative, collaborative, and broadly distributed model for electronic resource description. The purpose is to alert library managers to some experiments underway and to help them conceptualize new methods for defining,…

  15. The AP Descriptive Chemistry Question: Student Errors

    ERIC Educational Resources Information Center

    Crippen, Kent; Brooks, David W.

    2005-01-01

    For over a decade, the authors have been involved in a design theory experiment providing software for high school students preparing for the descriptive question on the Advanced Placement (AP) chemistry examination. Since 1997, the software has been available as a Web site offering repeatable practice. This study describes a 4-year project during…

  16. A SEASAT report. Volume 1: Program summary

    NASA Technical Reports Server (NTRS)

    Pounder, E. (Editor)

    1980-01-01

    The program background and experiment objectives are summarized, and a description of the organization and interfaces of the project are provided. The mission plan and history are also included as well as user activities and a brief description of the data system. A financial and manpower summary and preliminary results of the mission are also included.

  17. Impact of Single-Case Pupil Descriptions on Student Teacher Attitudes towards Inclusive Education

    ERIC Educational Resources Information Center

    Röhm, Alexander; Schnöring, Annika; Hastall, Matthias R.

    2018-01-01

    Institutional and individual stigmatization are still major barriers for children with disabilities to access education. Teacher attitudes towards inclusive education play a crucial role in this regard, and are shaped by single-case descriptions from mass media or other sources. Building on exemplification theory and priming, two experiments with…

  18. Inquiry-Based Teaching: An Example of Descriptive Science in Action

    ERIC Educational Resources Information Center

    Rehorek, Susan J.

    2004-01-01

    Inquiry-based learning is more work than passive learning, and there is a body of students who prefer to take the easier route. But there is also a body of students who wish to explore science. Two descriptive evolutionary experiments conducted by university freshman/sophomore biology majors, enrolled in General Zoology are described.

  19. Norms of Descriptive Adjective Responses to Common Nouns.

    ERIC Educational Resources Information Center

    Robbins, Janet L.

    This paper gives the results of a controlled experiment on word association. The purpose was to establish norms of commonality of primary descriptive adjective responses to common nouns. The stimuli consisted of 203 common nouns selected from 10 everyday topics of conversation, approximately 20 from each topic. There were 350 subjects, 50% male,…

  20. Spacecraft and their Boosters. Aerospace Education I.

    ERIC Educational Resources Information Center

    Coard, E. A.

    This book, one in the series on Aerospace Education I, provides a description of some of the discoveries that spacecraft have made possible and of the experience that American astronauts have had in piloting spacecraft. The basic principles behind the operation of spacecraft and their boosters are explained. Descriptions are also included on…

  1. Intuition: Two Caregivers' Descriptions of How They Provide Severely Demented Patients with Loving Care.

    ERIC Educational Resources Information Center

    Hellner, Britt Mari; Norberg, Astrid

    1994-01-01

    Interviewed two expert caregivers about their experiences of caring for severely demented patients. Ethical reasoning, exemplified by tender descriptions of relatedness to patients, indicated that expert caregivers used sound knowledge combined with imagination, empathy, and intuition to grasp situation, where patient is regarded as person with…

  2. Spacecraft attitude determination accuracy from mission experience

    NASA Technical Reports Server (NTRS)

    Brasoveanu, D.; Hashmall, J.

    1994-01-01

    This paper summarizes a compilation of attitude determination accuracies attained by a number of satellites supported by the Goddard Space Flight Center Flight Dynamics Facility. The compilation is designed to assist future mission planners in choosing and placing attitude hardware and selecting the attitude determination algorithms needed to achieve given accuracy requirements. The major goal of the compilation is to indicate realistic accuracies achievable using a given sensor complement based on mission experience. It is expected that the use of actual spacecraft experience will make the study especially useful for mission design. A general description of factors influencing spacecraft attitude accuracy is presented. These factors include determination algorithms, inertial reference unit characteristics, and error sources that can affect measurement accuracy. Possible techniques for mitigating errors are also included. Brief mission descriptions are presented with the attitude accuracies attained, grouped by the sensor pairs used in attitude determination. The accuracies for inactive missions represent a compendium of missions report results, and those for active missions represent measurements of attitude residuals. Both three-axis and spin stabilized missions are included. Special emphasis is given to high-accuracy sensor pairs, such as two fixed-head star trackers (FHST's) and fine Sun sensor plus FHST. Brief descriptions of sensor design and mode of operation are included. Also included are brief mission descriptions and plots summarizing the attitude accuracy attained using various sensor complements.

  3. Spectral Energetics Diagnoses and FGGE Special Observing Periods and Energetics Analyses of Forecast Experiments with GLAS GCM

    NASA Technical Reports Server (NTRS)

    Kung, E. C.

    1984-01-01

    Energetics characteristics of Goddard Laboratory for Atmospheric Sciences (GLAS) General Circulation Models (GCM) as they are reflected on the First GARD GLobal Experiment (FGGE) analysis data set are discussed. Energetics descriptions of GLAS GCM forecast experiments are discussed as well as Eneretics response of GLAS GCM climatic simulation experiments.

  4. A Case Study of Professors' and Instructional Designers' Experiences in the Development of Online Courses

    ERIC Educational Resources Information Center

    Stevens, Karl B.

    2012-01-01

    The purpose of this qualitative case study was to examine the experiences of instructional designers and professors during the online course development process and to determine if their experiences had an effect on the process itself. To gain an understanding of their experiences, open-ended interviews were conducted, seeking descriptions of…

  5. Human Factors Experiments for Data Link : Extended Summary for Interim Reports 1 Through 4

    DOT National Transportation Integrated Search

    1974-04-01

    The report provides an extended summary of Interim Reports numbers 1 through 4, dealing with Human Factors Experiments for Data Link. The material summarized includes a description of two experiments run on the GAT-1 simulator at TSC using one-man cr...

  6. 39 CFR 3055.92 - Customer Experience Measurement Surveys.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 39 Postal Service 1 2012-07-01 2012-07-01 false Customer Experience Measurement Surveys. 3055.92... SATISFACTION REPORTING Reporting of Customer Satisfaction § 3055.92 Customer Experience Measurement Surveys. (a... instrument including: (1) A description of the customer type targeted by the survey; (2) The number of...

  7. 39 CFR 3055.92 - Customer Experience Measurement Surveys.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 39 Postal Service 1 2011-07-01 2011-07-01 false Customer Experience Measurement Surveys. 3055.92... SATISFACTION REPORTING Reporting of Customer Satisfaction § 3055.92 Customer Experience Measurement Surveys. (a... instrument including: (1) A description of the customer type targeted by the survey; (2) The number of...

  8. 39 CFR 3055.92 - Customer Experience Measurement Surveys.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 39 Postal Service 1 2013-07-01 2013-07-01 false Customer Experience Measurement Surveys. 3055.92... SATISFACTION REPORTING Reporting of Customer Satisfaction § 3055.92 Customer Experience Measurement Surveys. (a... instrument including: (1) A description of the customer type targeted by the survey; (2) The number of...

  9. 39 CFR 3055.92 - Customer Experience Measurement Surveys.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 39 Postal Service 1 2014-07-01 2014-07-01 false Customer Experience Measurement Surveys. 3055.92... SATISFACTION REPORTING Reporting of Customer Satisfaction § 3055.92 Customer Experience Measurement Surveys. (a... instrument including: (1) A description of the customer type targeted by the survey; (2) The number of...

  10. Leadership Identity Development through an Interdisciplinary Leadership Minor

    ERIC Educational Resources Information Center

    Sorensen, Tyson J.; McKim, Aaron J.; Velez, Jonathan J.

    2016-01-01

    Leadership development among postsecondary students can occur through a variety of experiences; one such experience is a leadership minor. The purpose of this descriptive interpretive study was to analyze students' experiences while enrolled in a leadership minor with a focus on exploring evidence of leadership identity development. By exploring…

  11. The Experience of Evidence-Based Practice in an Australian Public Library: An Ethnography

    ERIC Educational Resources Information Center

    Gillespie, Ann; Partridge, Helen; Bruce, Christine; Howlett, Alisa

    2016-01-01

    Introduction: This paper presents the findings from a project that investigated the lived experiences of library and information professionals in relation to evidence-based practice within an Australian public library. Method: The project employed ethnography, which allows holistic description of people's experiences within a particular community…

  12. Geochemical Exploration of the Moon.

    ERIC Educational Resources Information Center

    Adler, Isidore

    1984-01-01

    Provides information based on explorations of the Apollo program about the geochemistry of the moon and its importance in developing an understanding of formation/evolution of the solar system. Includes description and some results of orbital remote sensing, lunar x-ray experiments, gamma-ray experiments, alpha-particle experiments, and the Apollo…

  13. A Duplicate Construction Experiment.

    ERIC Educational Resources Information Center

    Bridgeman, Brent

    This experiment was designed to assess the ability of item writers to construct truly parallel tests based on a "duplicate-construction experiment" in which Cronbach argues that if the universe description and sampling are ideally refined, the two independently constructed tests will be entirely equivalent, and that within the limits of item…

  14. The Role of Sexual Precedence in Verbal Sexual Coercion

    ERIC Educational Resources Information Center

    Livingston, Jennifer A.; Buddie, Amy M.; Testa, Maria; VanZile-Tamsen, Carol

    2004-01-01

    Experiences of verbal sexual coercion are common and have potential for negative consequences, yet are not well understood. This study used qualitative and descriptive statistics to examine verbal sexual coercion experiences among a community sample of 114 women and explored the role of sexual precedence in these experiences. Analyses revealed…

  15. Awkward or Amazing: Gender and Age Trends in First Intercourse Experiences

    ERIC Educational Resources Information Center

    Walsh, Jennifer L.; Ward, L. Monique; Caruthers, Allison; Merriwether, Ann

    2011-01-01

    Although research continues to highlight significant gender differences in first coital experiences, developmental approaches suggest that some of these patterns may be age-related. Therefore, this study investigated both gender and age differences in first intercourse experiences. Open-ended responses regarding reasons for, and descriptions of,…

  16. The association between spiritual well-being and burnout in intensive care unit nurses: A descriptive study.

    PubMed

    Kim, Hyun Sook; Yeom, Hye-Ah

    2018-06-01

    To describe the spiritual well-being and burnout of intensive care unit nurses and examine the relationship between these factors. This was a cross-sectional descriptive study. The participants were 318 intensive care unit recruited from three university hospitals in South Korea. The survey questionnaire included demographic information, work-related characteristics and end-of-life care experience, along with the Spiritual Well-Being Scale and Burnout Questionnaire. The data were analysed using descriptive statistics, t-tests, ANOVA with Scheffé test and a multiple regression analysis. The burnout level among intensive care unit nurses was 3.15 out of 5. A higher level of burnout was significantly associated with younger age, lower education level, single marital status, having no religion, less work experience and previous end-of-life care experience. Higher levels of spiritual well-being were associated with lower levels of burnout, even after controlling for the general characteristics in the regression model. Intensive care unit nurses experience a high level of burnout in general. Increased spiritual well-being might reduce burnout among intensive care unit nurses. Younger and less experienced nurses should receive more attention as a vulnerable group with lower spirituality and greater burnout in intensive care unit settings. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Measures for interoperability of phenotypic data: minimum information requirements and formatting.

    PubMed

    Ćwiek-Kupczyńska, Hanna; Altmann, Thomas; Arend, Daniel; Arnaud, Elizabeth; Chen, Dijun; Cornut, Guillaume; Fiorani, Fabio; Frohmberg, Wojciech; Junker, Astrid; Klukas, Christian; Lange, Matthias; Mazurek, Cezary; Nafissi, Anahita; Neveu, Pascal; van Oeveren, Jan; Pommier, Cyril; Poorter, Hendrik; Rocca-Serra, Philippe; Sansone, Susanna-Assunta; Scholz, Uwe; van Schriek, Marco; Seren, Ümit; Usadel, Björn; Weise, Stephan; Kersey, Paul; Krajewski, Paweł

    2016-01-01

    Plant phenotypic data shrouds a wealth of information which, when accurately analysed and linked to other data types, brings to light the knowledge about the mechanisms of life. As phenotyping is a field of research comprising manifold, diverse and time-consuming experiments, the findings can be fostered by reusing and combining existing datasets. Their correct interpretation, and thus replicability, comparability and interoperability, is possible provided that the collected observations are equipped with an adequate set of metadata. So far there have been no common standards governing phenotypic data description, which hampered data exchange and reuse. In this paper we propose the guidelines for proper handling of the information about plant phenotyping experiments, in terms of both the recommended content of the description and its formatting. We provide a document called "Minimum Information About a Plant Phenotyping Experiment", which specifies what information about each experiment should be given, and a Phenotyping Configuration for the ISA-Tab format, which allows to practically organise this information within a dataset. We provide examples of ISA-Tab-formatted phenotypic data, and a general description of a few systems where the recommendations have been implemented. Acceptance of the rules described in this paper by the plant phenotyping community will help to achieve findable, accessible, interoperable and reusable data.

  18. Developmental Changes in Children’s Processing of Redundant Modifiers in Definite Object Descriptions

    PubMed Central

    Koolen, Ruud; Krahmer, Emiel; Swerts, Marc

    2016-01-01

    This paper investigates developmental changes in children’s processing of redundant information in definite object descriptions. In two experiments, children of two age groups (6 or 7, and 9 or 10 years old) were presented with pictures of sweets. In the first experiment (pairwise comparison), two identical sweets were shown, and one of these was described with a redundant modifier. After the description, the children had to indicate the sweet they preferred most in a forced-choice task. In the second experiment (graded rating), only one sweet was shown, which was described with a redundant color modifier in half of the cases (e.g., “the blue sweet”) and in the other half of the cases simply as “the sweet.” This time, the children were asked to indicate on a 5-point rating scale to what extent they liked the sweets. In both experiments, the results showed that the younger children had a preference for the sweets described with redundant information, while redundant information did not have an effect on the preferences for the older children. These results imply that children are learning to distinguish between situations in which redundant information carries an implicature and situations in which this is not the case. PMID:27994569

  19. Prescience as an aura of temporal lobe epilepsy.

    PubMed

    Sadler, R Mark; Rahey, Susan

    2004-08-01

    A patient with a distinct aura of prescience as a manifestation of temporal lobe epilepsy was encountered. The experience prompted a review of this ictal phenomenon among patients attending a tertiary care epilepsy outpatient clinic. A computer epilepsy database was searched for patients with simple partial sensory seizures and complex partial seizures with auras. Identified patients had charts reviewed for details of the auras; patients were contacted and asked to provide written descriptions of their experiences. Literature searches (PubMed) were done by using the terms "precognition" or "prescience" and "seizures" or "epilepsy." Standard comprehensive epilepsy textbooks were reviewed. The charts of 218 patients were reviewed from 927 in the database; three had prescience as an ictal feature. The patients' descriptions were very similar in all cases (a profound sense of "knowing" what was going to happen in their environment in the immediate future). The experience was distinct from déjà vu and other psychic experiences. All patients probably have temporal lobe epilepsy. Only one other description of prescience as an ictal feature was found in the literature. Prescience can occur as an ictal feature of temporal lobe epilepsy and represents a previously underreported psychic phenomenon. The potential lateralizing value of this symptom is yet to be determined.

  20. A room with a viewpoint revisited: descriptive norms and hotel guests' towel reuse behavior.

    PubMed

    Bohner, Gerd; Schlüter, Lena E

    2014-01-01

    Field experiments on descriptive norms as a means to increase hotel guests' towel reuse [1] were replicated and extended. In two hotels in Germany (Study 1: N = 724; Study 2: N = 204), descriptive norm messages suggesting that 75% of guests had reused their towels, or a standard message appealing to environmental concerns, were placed in guests' bathrooms. Descriptive norm messages varied in terms of proximity of the reference group ("hotel guests" vs. "guests in this room") and temporal proximity (currently vs. two years previous). Reuse of towels was unobtrusively recorded. Results showed that reuse rates were high overall and that both standard and descriptive norm messages increased reuse rates compared to a no-message baseline. However, descriptive norm messages were not more effective than the standard message, and effects of proximity were inconsistent across studies. Discussion addresses cultural and conceptual issues in comparing the present findings with previous ones.

  1. Age-related differences in communication and audience design.

    PubMed

    Horton, William S; Spieler, Daniel H

    2007-06-01

    This article reports an experiment examining the extent to which younger and older speakers engage in audience design, the process of adapting one's speech for particular addresses. Through an initial card-matching task, pairs of younger adults and pairs of older adults established common ground for sets of picture cards. Subsequently, the same individuals worked separately on a computer-based picture-description task that involved a novel partner-cuing paradigm. Younger speakers' descriptions to the familiar partner were shorter and were initiated more quickly than were descriptions to an unfamiliar partner. In addition, younger speakers' descriptions to the familiar partner exhibited a higher proportion of lexical overlap with previous descriptions than did descriptions to an unfamiliar partner. Older speakers showed no equivalent evidence for audience design, which may reflect difficulties with retrieving partner-specific information from memory during conversation. ((c) 2007 APA, all rights reserved).

  2. Minding the Gap: Narrative Descriptions about Mental States Attenuate Parochial Empathy

    PubMed Central

    Bruneau, Emile G.; Cikara, Mina; Saxe, Rebecca

    2015-01-01

    In three experiments, we examine parochial empathy (feeling more empathy for in-group than out-group members) across novel group boundaries, and test whether we can mitigate parochial empathy with brief narrative descriptions. In the absence of individuating information, participants consistently report more empathy for members of their own assigned group than a competitive out-group. However, individualized descriptions of in-group and out-group targets significantly reduce parochial empathy by interfering with encoding of targets’ group membership. Finally, the descriptions that most effectively decrease parochial empathy are those that describe targets’ mental states. These results support the role of individuating information in ameliorating parochial empathy, suggest a mechanism for their action, and show that descriptions emphasizing targets’ mental states are particularly effective. PMID:26505194

  3. Experiences Teaching a Software Aided Mathematics Course for a General University Audience.

    ERIC Educational Resources Information Center

    McGivney, Raymond J., Jr.

    1990-01-01

    Described is a nonmajor mathematics course taught using computers and lab experiments. Included are the challenge, solution, description of the first class, problems, successes, the syllabus, student comments, and the conclusion. (KR)

  4. Computer Series, 17: Bits and Pieces, 5.

    ERIC Educational Resources Information Center

    Moore, John W., Ed.

    1981-01-01

    Contains short descriptions of computer programs or hardware that simulate laboratory instruments or results of kinetics experiments, including ones that include experiment error, numerical simulation, first-order kinetic mechanisms, a game for decisionmaking, and simulated mass spectrophotometers. (CS)

  5. Snow that Melted Only Yesterday: Thoughts about Teaching Literature.

    ERIC Educational Resources Information Center

    Crew, Fraser

    1979-01-01

    A teacher's personal experience and its similarity to observations in a poem by Robert Frost illustrate the literature teacher's function--to find shared experiences in literature and transmit the power of the descriptions to others. (RL)

  6. Use of categorical and individuating information in making inferences about personality.

    PubMed

    Krueger, J; Rothbart, M

    1988-08-01

    In three experiments, we explored the effects of categorical information (stereotypes) and case information (traits or behaviors) on judgments about an individual's characteristics. Subjects judged a target person's aggressiveness on the basis of a description containing both a broad social category and specific case information. In Experiment 1, the description included (a) a category that was either weakly or strongly related to aggressiveness and (b) a behavior that was unrelated, moderately diagnostic, or highly diagnostic of aggressiveness. Trait inferences were a function of both the stereotypic and the behavioral information. A single behavior was not sufficient to override the category effect. In Experiment 2, temporally consistent behaviors were presented as case information; under these conditions, category information had no effect on trait judgements. This finding was extended in Experiment 3 in which subjects predicted behaviors on the basis of the target person's sex and a moderately diagnostic trait.

  7. Turkish Senior Nursing Students' Communication Experience With English-Speaking Patients.

    PubMed

    Guvenc, Gulten; Unver, Vesile; Basak, Tulay; Yuksel, Cigdem; Ayhan, Hatice; Kok, Gulsah; Konukbay, Dilek; Kose, Gulsah; Aslan, Ozlem; Tastan, Sevinc; Iyigun, Emine

    2016-02-01

    Simulation has been widely accepted as a valuable learning method in nursing education programs so that nursing students can learn and develop communication skills. The aim of this study was to evaluate nursing students' communication experience with an English-speaking standardized patient in the context of the Rational Administration of Medicines course. Involving both quantitative and qualitative research designs, this descriptive study was conducted with 104 nursing students in Ankara, Turkey, from September 2012 to July 2013. The majority (98.1%) of the participants stated the necessity of improving their English to communicate with English-speaking patients. Three overarching categories, including seven themes, emerged from the description of nursing students' experience: recognition of emotions, experiences during the simulation, and gains. Standardized patient practice emphasized the significance of cultural differences, of knowing and using a foreign language, of communication, and of patient safety. Copyright 2016, SLACK Incorporated.

  8. Meanings of Falls and Prevention of Falls According to Rehabilitation Nurses: A Qualitative Descriptive Study.

    PubMed

    Bok, Amy; Pierce, Linda L; Gies, Cheryl; Steiner, Victoria

    2016-01-01

    Guided by Friedemann's theoretical framework, this survey explored the meaning of a fall of an institutionalized older adult or fall prevention to rehabilitation registered nurses and whether the experience changed the nurse's practice. Qualitative, descriptive survey. A convenience sample of 742 rehabilitation nurses was asked to describe these experiences and the impact on their practice. Themes discovered related to the meaning of a fall include negative feelings (incongruence) and positive feelings (congruence). Themes related to the meaning of preventing a fall include positive feelings (congruence). Practice change themes emerged from both the experience of a fall and fall prevention. Practice change themes were drawn to Friedemann's (1995) process dimensions. Nurses' experiences and meanings of falls uncovered negative and positive feelings about these falls. New findings of this study were the positive feelings expressed by nurses, when there was no injury or when a fall was prevented. © 2015 Association of Rehabilitation Nurses.

  9. The figure has a shape, but the ground does not: evidence from a priming paradigm.

    PubMed

    Baylis, G C; Cale, E M

    2001-06-01

    In four experiments, the authors examined the extent to which the ground interpretation of an edge may receive a shape description. These experiments used the priming effect that shapes have on perceptual judgments on a subsequent trial. A robust reduction in error rates and reaction times was seen when the figural shape was the same as that on the previous trial. This repetition priming effect may be due to activation of the shape description of the figure that remained from the previous trial. In contrast, no priming by the shape of the ground was seen even when the contrast sign of the figure reversed between trials. Priming for figural shapes occurred at a relatively abstract level because it was robust across reversals of contrast and orientation. These data suggest that the figural interpretation of a shape receives a shape description but that the ground does not.

  10. Context retrieval and description benefits for recognition of unfamiliar faces.

    PubMed

    Jones, Todd C; Robinson, Kealagh; Steel, Brenna C

    2018-04-19

    Describing unfamiliar faces during or immediately after their presentation in a study phase can produce better recognition memory performance compared with a view-only control condition. We treated descriptions as elaborative information that is part of the study context and investigated how context retrieval influences recognition memory. Following general dual-process theories, we hypothesized that recollection would be used to recall descriptions and that description recall would influence recognition decisions, including the level of recognition confidence. In four experiments description conditions produced higher hit rates and higher levels of recognition confidence than control conditions. Participants recalled descriptive content on some trials, and this context retrieval was linked to an increase in the recognition confidence level. Repeating study faces in description conditions increased recognition scores, recognition confidence level, and context retrieval. Estimates of recollection from Yonelinas' (1994) dual-process signal detection ROCs were, on average, very close to the measures of context recall. Description conditions also produced higher estimates of familiarity. Finally, we found evidence that participants engaged in description activity in some ostensibly view-only trials. An emphasis on the information participants use in making their recognition decisions can advance understanding on description effects when descriptions are part of the study trial context. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  11. Evaluation of the Clinical Learning Experience of Nursing Students: a Cross-Sectional Descriptive Study.

    PubMed

    Gurková, Elena; Žiaková, Katarína

    2018-05-18

    The purpose of the cross-sectional descriptive study was to explore and compare the students' experiences of the clinical environment and supervision in Slovakia. Students' clinical learning experience were measured by the valid and reliable clinical learning instrument. A higher frequency of successful supervisory experience was found in the universities which provided accredited mentor preparation programmes or courses and individualised supervisory approaches. Frequency of supervision meetings, the occupational title of a supervisor and mainly the supervision model have an association with students 'perceptions of different domains of clinical learning environment. The duration of the placement was not related to students' experience and perceptions of the learning environment. Slovak students reported higher score regarding the quality of nursing care or ward culture than in the supervisory relationships between students, clinical and school staff. Further studies in this field, extended to different Eastern European countries and clinical settings, may help us to understand factors affecting workplace training.

  12. Secondary School Senior Capstone Projects: A Descriptive and Interpretive Case Study on Post-Secondary Students' Perspectives of Learning Transfer

    ERIC Educational Resources Information Center

    Yasuda, Vanessa Applbaum

    2017-01-01

    This descriptive and interpretive case study investigates how 12 undergraduate college students perceived participation in their high school Senior Capstone Project (SCP) impacted their college academic experience. Learning transfer was explored from the learner's perspective. Data was collected using qualitative methods in three sequential phases…

  13. A Description of the Strategic Knowledge of Experts Solving Transmission Genetics Problems.

    ERIC Educational Resources Information Center

    Collins, Angelo

    Descriptions of the problem-solving strategies of experts solving realistic, computer-generated transmission genetics problems are presented in this paper and implications for instruction are discussed. Seven experts were involved in the study. All of the experts had a doctoral degree and experience in both teaching and doing research in genetics.…

  14. [The phenomenology of depression].

    PubMed

    Lammel, M

    1987-06-01

    Jakob Wassermann's story Die Gefangenen auf der Plassenburg (The prisoners of Plasenburg) is taken as a starting point for a discussion of experiences, coping with events, and estrangement, and their effect regarding depressive emotional deterioration and its description. The possibilities of succinct expression in the description of boredom, depressive emotional deterioration, melancholy, and dejection are indicated, with special reference to interactional psychopathology.

  15. A Descriptive Study of Head Start Families: FACES Technical Report I.

    ERIC Educational Resources Information Center

    O'Brien, Robert W.; D'Elio, Mary Ann; Vaden-Kiernan, Michael; Magee, Candice; Younoszai, Tina; Keane, Michael J.; Connell, David C.; Hailey, Linda

    Recognizing that families have played an essential role in the Head Start philosophy since the program's inception, the Head Start Family and Child Experiences Survey (FACES) is an effort to develop a descriptive profile of families participating in the Head Start program and services, as well as to develop, test, and refine Program Performance…

  16. Machine-Aided Indexing in Practice: An Encounter with Automatic Indexing of the Third Kind.

    ERIC Educational Resources Information Center

    Klingbiel, Paul H.

    This three-part report includes a brief history of the Defense Documentation Center (DDC) with a description of the collections and their accessibility; categorization of automatic indexing into three kinds with a brief description of the DDC system of machine-aided indexing; and an indication of some operational experiences with the system.…

  17. Changes in Perceptions: A Comparative Study of the Experiential Learning of International Student Teachers.

    ERIC Educational Resources Information Center

    McKay, Joane W.; Montgomery, Janey

    This study was designed to provide a rich description of the changing perceptions student teachers had about increased personal growth and enhanced global awareness as a result of teaching placements in foreign countries. The study included an examination of research on the impact of international student teaching (IST) experiences, description of…

  18. “Living With a Ball and Chain”: The Experience of Stroke for Individuals and Their Caregivers in Rural Appalachian Kentucky

    PubMed Central

    Danzl, Megan M.; Hunter, Elizabeth G.; Campbell, Sarah; Sylvia, Violet; Kuperstein, Janice; Maddy, Katherine; Harrison, Anne

    2013-01-01

    Purpose Individuals in rural Appalachian Kentucky face health disparities and are at increased risk for negative health outcomes and poor quality of life secondary to stroke. The purpose of this study is to describe the experience of stroke for survivors and their caregivers in this region. A description of their experiences is paramount to developing tailored interventions and ultimately improving health care and support. Methods An interprofessional research team used a qualitative descriptive study design and interviewed 13 individuals with stroke and 12 caregivers, representing 10 rural Appalachian Kentucky counties. The transcripts were analyzed using qualitative content analysis. Findings A descriptive summary of the participants’ experience of stroke is presented within the following structure: 1) Stroke onset, 2) Transition through the health care continuum (including acute care, inpatient rehabilitation, and community-based rehabilitation), and 3) Reintegration into life and rural communities. Conclusions The findings provide insight for rural health care providers and community leaders to begin to understand the experience of stroke in terms of stroke onset, transition through the health care continuum, return to home, and community reintegration. An understanding of these experiences may lead to discussions of how to improve service provision, facilitate reintegration, support positive health outcomes and improve quality of life for stroke survivors and their caregivers. The findings also indicate areas in need of future research including investigation of the effects of support groups, local health navigators to improve access to information and services, involvement of faith communities, proactive screening for management of mental health needs, and caregiver respite services. PMID:24088211

  19. Toward an International Classification of Functioning, Disability and Health clinical data collection tool: the Italian experience of developing simple, intuitive descriptions of the Rehabilitation Set categories.

    PubMed

    Selb, Melissa; Gimigliano, Francesca; Prodinger, Birgit; Stucki, Gerold; Pestelli, Germano; Iocco, Maurizio; Boldrini, Paolo

    2017-04-01

    As part of international efforts to develop and implement national models including the specification of ICF-based clinical data collection tools, the Italian rehabilitation community initiated a project to develop simple, intuitive descriptions of the ICF Rehabilitation Set, highlighting the core concept of each category in user-friendly language. This paper outlines the Italian experience in developing simple, intuitive descriptions of the ICF Rehabilitation Set as an ICF-based clinical data collection tool for Italy. Consensus process. Expert conference. Multidisciplinary group of rehabilitation professionals. The first of a two-stage consensus process involved developing an initial proposal for simple, intuitive descriptions of each ICF Rehabilitation Set category based on descriptions generated in a similar process in China. Stage two involved a consensus conference. Divided into three working groups, participants discussed and voted (vote A) whether the initially proposed descriptions of each ICF Rehabilitation Set category was simple and intuitive enough for use in daily practice. Afterwards the categories with descriptions considered ambiguous i.e. not simple and intuitive enough, were divided among the working groups, who were asked to propose a new description for the allocated categories. These proposals were then voted (vote B) on in a plenary session. The last step of the consensus conference required each working group to develop a new proposal for each and the same categories with descriptions still considered ambiguous. Participants then voted (final vote) for which of the three proposed descriptions they preferred. Nineteen clinicians from diverse rehabilitation disciplines from various regions of Italy participated in the consensus process. Three ICF categories already achieved consensus in vote A, while 20 ICF categories were accepted in vote B. The remaining 7 categories were decided in the final vote. The findings were discussed in light of current efforts toward developing strategies for ICF implementation, specifically for the application of an ICF-based clinical data collection tool, not only for Italy but also for the rest of Europe. Promising as minimal standards for monitoring the impact of interventions and for standardized reporting of functioning as a relevant outcome in rehabilitation.

  20. Determining Absolute Zero in the Kitchen Sink.

    ERIC Educational Resources Information Center

    Otani, Robert; Siegel, Peter

    1991-01-01

    Presents an experiment to demonstrate Charles's Law of Ideal Gases by creating a constant-pressure thermometer from materials that can be found in the kitchen. Discusses the underlying mathematical relationships and a step-by-step description of the experiment. (MDH)

  1. 16 CFR 437.3 - Severability.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    .... Business experience of the business opportunity seller's directors and executive officers. 3. Business experience of the business opportunity seller. 4. Litigation history. 5. Bankruptcy history. 6. Description.... Obligations to purchase. 11. Revenues received by the business opportunity seller in consideration of...

  2. SeaSat-A Satellite Scatterometer (SASS) Validation and Experiment Plan

    NASA Technical Reports Server (NTRS)

    Schroeder, L. C. (Editor)

    1978-01-01

    This plan was generated by the SeaSat-A satellite scatterometer experiment team to define the pre-and post-launch activities necessary to conduct sensor validation and geophysical evaluation. Details included are an instrument and experiment description/performance requirements, success criteria, constraints, mission requirements, data processing requirement and data analysis responsibilities.

  3. Business Student Attitudes, Experience, and Satisfaction with Online Courses

    ERIC Educational Resources Information Center

    Kuzma, Ann; Kuzma, John; Thiewes, Harold

    2015-01-01

    The purpose of our study is to examine business students' perceptions of their online class experience relative to the traditional in-class experience; specifically, whether a descriptive, theoretical or analytical course would be preferred as an online or traditional course. Two hundred and ninety students enrolled in upper-level business courses…

  4. School Counselors' Professional Experience and Practices Working with Students Who Self-Harm: A Qualitative Study

    ERIC Educational Resources Information Center

    Roberts, Ellen Adams

    2013-01-01

    The professional experiences and practices of school counselors and the interventions they employ while working with adolescent students who self-harm is an underrepresented area within current research. This generic qualitative study provides a rich description and a deeper understanding of the professional experiences and practices of school…

  5. Building International Experiences into an Engineering Curriculum--A Design Project-Based Approach

    ERIC Educational Resources Information Center

    Maldonado, Victor; Castillo, Luciano; Carbajal, Gerardo; Hajela, Prabhat

    2014-01-01

    This paper is a descriptive account of how short-term international and multicultural experiences can be integrated into early design experiences in an aerospace engineering curriculum. Such approaches are considered as important not only in fostering a student's interest in the engineering curriculum, but also exposing them to a multicultural…

  6. Using Concrete & Representational Experiences to Understand the Structure of DNA: A Four-Step Instructional Framework

    ERIC Educational Resources Information Center

    Harrell, Pamela Esprivalo; Richards, Debbie; Collins, James; Taylor, Sarah

    2005-01-01

    A description of learning experience that uses a four-step instrumentational framework involving concrete and representational experiences to promote conceptual understanding of abstract biological concepts by a series of closely-related activities is presented. The students are introduced to the structure and implications of DNA using four…

  7. Re-Learning from Experience: Using Autoethnography for Teacher Development

    ERIC Educational Resources Information Center

    Pinner, Richard S.

    2018-01-01

    This inquiry had two primary aims; firstly to evaluate the feasibility of using autoethnography to gain an informed and more descriptive view of past teaching experiences and secondly to understand more about the experience of a teacher's professional development in order to become a more reflective practitioner. This paper presents a narrative…

  8. Teenagers' Significant Experiences in Aesthetic Areas: Some Empirical Observations Regarding the Role of Dramatic Art

    ERIC Educational Resources Information Center

    Finnas, Leif

    2008-01-01

    Fifteen sixteen-year-old Fenno-Swedish compulsory school pupils' descriptions and evaluations of significant, i.e. more or less "strong", experiences relating to dramatic art (film, theatre) were analysed and compared with reported experiences in other aesthetic areas (music, nature etc.). The drama area was represented in many…

  9. Student Experiences with Writing: Taking the Temperature of the Classroom

    ERIC Educational Resources Information Center

    Zumbrunn, Sharon; Ekholm, Eric; Stringer, J. K.; McKnight, Kimberly; DeBusk-Lane, Morgan

    2017-01-01

    This article offers insights into students' perceptions of writing through the use of drawings and written responses. In a descriptive qualitative study of fifth graders across two diverse elementary schools, students were prompted to draw a picture about a recent experience with writing and how that experience made them feel. Students were then…

  10. College Alcohol Beliefs and Drinking Consequences: A Multiple Mediation Analysis of Norms, Expectancies, and Willingness to Experience Drinking Consequences

    ERIC Educational Resources Information Center

    Osberg, Timothy M.; Boyer, Amber

    2018-01-01

    Objective: We explored the potential mediating role of willingness to experience drinking consequences and other traditional alcohol outcome predictors (descriptive norms, injunctive norms, positive alcohol expectancies) in explaining the association between college alcohol beliefs1 (CABs) and the actual experience of drinking consequences among…

  11. A Phenomenological Study: The Experience of Live Supervision during a Pre-Practicum Counseling Techniques Course

    ERIC Educational Resources Information Center

    Koltz, Rebecca L.; Feit, Stephen S.

    2012-01-01

    The experiences of live supervision for three, master's level, pre-practicum counseling students were explored using a phenomenological methodology. Using semi-structured interviews, this study resulted in a thick description of the experience of live supervision capturing participants' thoughts, emotions, and behaviors. Data revealed that live…

  12. Higher theta and alpha1 coherence when listening to Vedic recitation compared to coherence during Transcendental Meditation practice.

    PubMed

    Travis, Frederick; Parim, Niyazi; Shrivastava, Amrita

    2017-03-01

    This study compared subjective experiences and EEG patterns in 37 subjects when listening to live Vedic recitation and when practicing Transcendental Meditation (TM). Content analysis of experiences when listening to Vedic recitation yielded three higher-order code. Experiences during Vedic recitation were: (1) deeper than during TM practice; (2) experienced as an inner process; and (3) characterized by lively silence. EEG patterns support these higher-order codes. Theta2 and alpha1 frontal, parietal, and frontal-parietal coherence were significantly higher when listening to Vedic recitation, than during TM practice. Theta2 coherence is seen when attending to internal mental processes. Higher theta2 coherence supports subjects' descriptions that the Vedic recitations were "not external sounds but internal vibrations." Alpha1 coherence is reported during pure consciousness experiences during TM practice. Higher alpha1 coherence supports subjects' descriptions that they "experienced a depth of experience, rarely experienced even during deep TM practice." These data support the utility of listening to Vedic recitation to culture deep inner experiences. Copyright © 2017 Elsevier Inc. All rights reserved.

  13. Spacelab cryogenic propellant management experiment

    NASA Technical Reports Server (NTRS)

    Cady, E. C.

    1976-01-01

    The conceptual design of a Spacelab cryogen management experiment was performed to demonstrate toe desirability and feasibility of subcritical cryogenic fluid orbital storage and supply. A description of the experimental apparatus, definition of supporting requirements, procedures, data analysis, and a cost estimate are included.

  14. Gaining Momentum: Re-Creating Galileo's Inclined Plane.

    ERIC Educational Resources Information Center

    Albrecht, Bob; Firedrake, George

    1998-01-01

    Provides an excerpt of Galileo's description of his inclined plane experiment. Describes the replication of Galileo's inclined plane experiment by students at Rice University (Texas) using an Internet site called the Galileo Project; then describes the authors' replication of the Project. (AEF)

  15. Astronaut operations requirements document for the White Light Coronagraph experiment s-052 for the Apollo Telescope Mount

    NASA Technical Reports Server (NTRS)

    Ross, C. L.

    1973-01-01

    Information necessary for successful performance of the observer's function in the White Light Coronagraph portion of the Apollo Telescope Mount experiments is presented. The pre-flight, in-flight, and post-flight operations required to perform the S-052 experiment are described. A discussion of the scientific objectives of the experiment and a description of the hardware are provided.

  16. Teenagers' Significant Experiences in Areas of Arts: A Study of the Subjectively Felt Impact and Some Qualitative Aspects of Experiences Involving Productive Arts Activities

    ERIC Educational Resources Information Center

    Finnas, Leif

    2012-01-01

    As a part of a larger project, this study focused primarily on Finland-Swedish ninth-graders' "productive" arts experiences (involving music-making, acting, writing, painting/drawing, dancing), as these had been reported when the pupils had been asked to write down descriptions of "strong" experiences in arts areas (music,…

  17. Spacelab mission 1 experiment descriptions, third edition

    NASA Technical Reports Server (NTRS)

    Craven, P. D. (Editor)

    1983-01-01

    Experiments and facilities selected for flight on the first Spacelab mission are described. Chosen from responses to the Announcement of Opportunity for the Spacelab 1 mission, the experiments cover five broad areas of investigation: atmospheric physics and Earth observations; space plasma physics; astronomy and solar physics; material sciences and technology; and life sciences. The name of the principal investigator and country is listed for each experiment.

  18. South American Field Experience: An Initiative in International Education. The Implementation Journal for the South American Field Experience.

    ERIC Educational Resources Information Center

    Martin, William J.

    A description is provided of Williamsport Area Community College's (WACC's) South American Field Experience program, a travel/study program for faculty and staff designed to provide a variety of learning experiences through a three week trip to Peru, Chile, Argentina, and Brazil. Chapter I presents an overview of the development of the project,…

  19. The Patient Experience With Shared Decision Making: A Qualitative Descriptive Study.

    PubMed

    Truglio-Londrigan, Marie

    2015-01-01

    Shared decision making is a process characterized by a partnership between a nurse and a patient. The existence of a relationship does not ensure shared decision making. Little is known about what nurses need to know and do for this experience to take place. A qualitative descriptive study was implemented using Coalizzi's method. Semistructured interviews were held with patients, and 3 themes were uncovered. The findings suggest that a nurse's conduct aimed at drawing patients in and inviting them to participate in a conversation leads toward shared decisions. Infusion nurses may find this information useful as they engage their patients in shared decisions.

  20. Flight Experiment Demonstration System (FEDS) functional description and interface document

    NASA Technical Reports Server (NTRS)

    Belcher, R. C.; Shank, D. E.

    1984-01-01

    This document presents a functional description of the Flight Experiment Demonstration System (FEDS) and of interfaces between FEDS and external hardware and software. FEDS is a modification of the Automated Orbit Determination System (AODS). FEDS has been developed to support a ground demonstration of microprocessor-based onboard orbit determination. This document provides an overview of the structure and logic of FEDS and details the various operational procedures to build and execute FEDS. It also documents a microprocessor interface between FEDS and a TDRSS user transponder and describes a software simulator of the interface used in the development and system testing of FEDS.

  1. Software Geometry in Simulations

    NASA Astrophysics Data System (ADS)

    Alion, Tyler; Viren, Brett; Junk, Tom

    2015-04-01

    The Long Baseline Neutrino Experiment (LBNE) involves many detectors. The experiment's near detector (ND) facility, may ultimately involve several detectors. The far detector (FD) will be significantly larger than any other Liquid Argon (LAr) detector yet constructed; many prototype detectors are being constructed and studied to motivate a plethora of proposed FD designs. Whether it be a constructed prototype or a proposed ND/FD design, every design must be simulated and analyzed. This presents a considerable challenge to LBNE software experts; each detector geometry must be described to the simulation software in an efficient way which allows for multiple authors to easily collaborate. Furthermore, different geometry versions must be tracked throughout their use. We present a framework called General Geometry Description (GGD), written and developed by LBNE software collaborators for managing software to generate geometries. Though GGD is flexible enough to be used by any experiment working with detectors, we present it's first use in generating Geometry Description Markup Language (GDML) files to interface with LArSoft, a framework of detector simulations, event reconstruction, and data analyses written for all LAr technology users at Fermilab. Brett is the other of the framework discussed here, the General Geometry Description (GGD).

  2. Simultaneity in Emotional Moments

    NASA Astrophysics Data System (ADS)

    Clore, Gerald L.

    Emotions are described as emergent states, which exist only to the extent that multiple affective reactions to the same object occur at the same time. Emotions are thus the confluence of thoughts, feelings, expressions, desires, and so on. They emerge as meta-cognitive representations of embodied affective reactions. Emotions may be initiated by low-level, automatic, unconscious affective reactions, which are then iteratively re-processed with ever greater cognitive involvement until they become elaborated into emotional states. Affective and emotional reactions act as information about the value of objects of judgment and of accessible cognitions and inclinations during tasks. They influence judgment and thought when they are experienced simultaneously with sensory data about the world. Affective influences thus depend on our inability to disentangle affective from descriptive perceptions. To the extent that affective reactions reflect different, incommensurate sources of value (e.g., utilitarian, moral, aesthetic), perceived persons or objects may be experienced as being transcendently good or evil. Experiments varying people's attributions for their affective experiences allow the separate roles of affective and descriptive information to be examined. However, it is the inability to parse everyday experience into its separate sources of evaluative and descriptive information that gives rise to a colourful and transcendent reality.

  3. Experiment Definition Using the Space Laboratory, Long Duration Exposure Facility, and Space Transportation System Shuttle

    NASA Technical Reports Server (NTRS)

    Sheppard, Albert P.; Wood, Joan M.

    1976-01-01

    Candidate experiments designed for the space shuttle transportation system and the long duration exposure facility are summarized. The data format covers: experiment title, Experimenter, technical abstract, benefits/justification, technical discussion of experiment approach and objectives, related work and experience, experiment facts space properties used, environmental constraints, shielding requirements, if any, physical description, and sketch of major elements. Information was also included on experiment hardware, research required to develop experiment, special requirements, cost estimate, safety considerations, and interactions with spacecraft and other experiments.

  4. The Microgravity Research Experiments (MICREX) Data Base

    NASA Technical Reports Server (NTRS)

    Winter, C. A.; Jones, J. C.

    1996-01-01

    An electronic data base identifying over 800 fluids and materials processing experiments performed in a low-gravity environment has been created at NASA Marshall Space Flight Center. The compilation, called MICREX (MICrogravity Research Experiments) was designed to document all such experimental efforts performed (1) on U.S. manned space vehicles, (2) on payloads deployed from U.S. manned space vehicles, and (3) on all domestic and international sounding rockets (excluding those of China and the former U.S.S.R.). Data available on most experiments include (1) principal and co-investigator (2) low-gravity mission, (3) processing facility, (4) experimental objectives and results, (5) identifying key words, (6) sample materials, (7) applications of the processed materials/research area, (8) experiment descriptive publications, and (9) contacts for more information concerning the experiment. This technical memorandum (1) summarizes the historical interest in reduced-gravity fluid dynamics, (2) describes the importance of a low-gravity fluids and materials processing data base, (4) describes thE MICREX data base format and computational World Wide Web access procedures, and (5) documents (in hard-copy form) the descriptions of the first 600 fluids and materials processing experiments entered into MICREX.

  5. The Microgravity Research Experiments (MICREX) Data Base. Volume 2

    NASA Technical Reports Server (NTRS)

    Winter, C. A.; Jones, J. C.

    1996-01-01

    An electronic data base identifying over 800 fluids and materials processing experiments performed in a low-gravity environment has been created at NASA Marshall Space Flight Center. The compilation, called MICREX (MICrogravity Research Experiments), was designed to document all such experimental efforts performed (1) on U.S. manned space vehicles, (2) on payloads deployed from U.S. manned space vehicles, and (3) on all domestic and international sounding rockets (excluding those of China and the former U.S.S.R.). Data available on most experiments include (1) principal and co-investigators (2) low-gravity mission, (3) processing facility, (4) experimental objectives and results, (5) identifying key words, (6) sample materials, (7) applications of the processed materials/research area, (8) experiment descriptive publications, and (9) contacts for more information concerning the experiment. This technical memorandum (1) summarizes the historical interest in reduced-gravity fluid dynamics, (2) describes the experimental facilities employed to examine reduced gravity fluid flow, (3) discusses the importance of a low-gravity fluids and materials processing data base, (4) describes the MICREX data base format and computational World Wide Web access procedures, and (5) documents (in hard-copy form) the descriptions of the first 600 fluids and materials processing experiments entered into MICREX.

  6. The Microgravity Research Experiments (MICREX) Data Base. Volume 1

    NASA Technical Reports Server (NTRS)

    Winter, C. A.; Jones, J.C.

    1996-01-01

    An electronic data base identifying over 800 fluids and materials processing experiments performed in a low-gravity environment has been created at NASA Marshall Space Flight Center. The compilation, called MICREX (MICrogravity Research Experiments), was designed to document all such experimental efforts performed (1) on U.S. manned space vehicles, (2) on payloads deployed from U.S. manned space vehicles, and (3) on all domestic and international sounding rockets (excluding those of China and the former U.S.S.R.). Data available on most experiments include (1) principal and co-investigators, (2) low-gravity mission, (3) processing facility, (4) experimental objectives and results, (5) identifying key words, (6) sample materials, (7) applications of the processed materials/research area, (8) experiment descriptive publications, and (9) contacts for more information concerning the experiment. This technical memorandum (1) summarizes the historical interest in reduced-gravity fluid dynamics, (2) describes the experimental facilities employed to examine reduced gravity fluid flow, (3) discusses the importance of a low-gravity fluids and materials processing data base, (4) describes the MICREX data base format and computational World Wide Web access procedures, and (5) documents (in hard-copy form) the descriptions of the first 600 fluids and materials processing experiments entered into MICREX.

  7. The Microgravity Research Experiments (MICREX) Data Base, Volume 4

    NASA Technical Reports Server (NTRS)

    Winter, C. A.; Jones, J. C.

    1996-01-01

    An electronic data base identifying over 800 fluids and materials processing experiments performed in a low-gravity environment has been created at NASA Marshall Space Flight Center. The compilation, called MICREX (MICrogravity Research Experiments), was designed to document all such experimental efforts performed (1) on U.S. manned space vehicles, (2) on payloads deployed from U.S. manned space vehicles, and (3) on all domestic and international sounding rockets (excluding those of China and the former U.S.S.R.). Data available on most experiments include (1) principal and co-investigators (2) low-gravity mission, (3) processing facility, (4) experimental objectives and results, (5) identifying key words, (6) sample materials, (7) applications of the processed materials/research area, (8) experiment descriptive publications, and (9) contacts for more information concerning the experiment. This technical Memorandum (1) summarizes the historical interest in reduced-gravity fluid dynamics, (2) describes the importance of a low-gravity fluids and materials processing data base, (4) describes the MICREX data base format and computational World Wide Web access procedures, and (5) documents (in hard-copy form) the descriptions of the first 600 fluids and materials processing experiments entered into MICREX.

  8. The Long and Short of It: Closing the Description-Experience "Gap" by Taking the Long-Run View

    ERIC Educational Resources Information Center

    Camilleri, Adrian R.; Newell, Ben R.

    2013-01-01

    Previous research has shown that many choice biases are attenuated when short-run decisions are reframed to the long run. However, this literature has been limited to description-based choice tasks in which possible outcomes and their probabilities are explicitly specified. A recent literature has emerged showing that many core results found using…

  9. A Qualitative Descriptive Case Study of the Requirements of the IT Industry for Entry-Level IT Positions

    ERIC Educational Resources Information Center

    Feuerherm, Todd Michael

    2009-01-01

    This qualitative descriptive case study explored the requirements of the IT industry for education, IT certification, and work experience for entry-level IT professionals. Research has shown a growing problem where IT graduates were not able to meet the requirements for entry-level IT jobs. IT enrollment has decreased considerably over the past…

  10. The Sound of German: Descriptions of Accent by Native and Non-Native Listeners

    ERIC Educational Resources Information Center

    Wilkerson, Miranda E.

    2013-01-01

    This paper presents a study of factors affecting judgments of native and non-native accent in German. The data suggest that listener status (native or non-native speakers) and degree of experience with German play a role in the aspects of speech which raters cite as salient. Interestingly, the same descriptive terms used by raters were shown to…

  11. Home Literacy Experiences and Early Childhood Disability: A Descriptive Study Using the National Household Education Surveys (NHES) Program Database

    ERIC Educational Resources Information Center

    Breit-Smith, Allison; Cabell, Sonia Q.; Justice, Laura M.

    2010-01-01

    Purpose: The present article illustrates how the National Household Education Surveys (NHES; U.S. Department of Education, 2009) database might be used to address questions of relevance to researchers who are concerned with literacy development among young children. Following a general description of the NHES database, a study is provided that…

  12. Feels like the real thing: imagery is both more realistic and emotional than verbal thought.

    PubMed

    Mathews, Andrew; Ridgeway, Valerie; Holmes, Emily A

    2013-01-01

    The production of mental images involves processes that overlap with perception and the extent of this overlap may contribute to reality monitoring errors (i.e., images misremembered as actual events). We hypothesised that mental images would be more confused with having actually seen a pictured object than would alternative representations, such as verbal descriptions. We also investigated whether affective reactions to images were greater than to verbal descriptions, and whether emotionality was associated with more or less reality monitoring confusion. In two experiments signal detection analysis revealed that mental images were more likely to be confused with viewed pictures than were verbal descriptions. There was a general response bias to endorse all emotionally negative items, but accuracy of discrimination between imagery and viewed pictures was not significantly influenced by emotional valence. In a third experiment we found that accuracy of reality monitoring depended on encoding: images were more accurately discriminated from viewed pictures when rated for affect than for size. We conclude that mental images are both more emotionally arousing and more likely to be confused with real events than are verbal descriptions, although source accuracy for images varies according to how they are encoded.

  13. Self-motion perception: assessment by computer-generated animations

    NASA Technical Reports Server (NTRS)

    Parker, D. E.; Harm, D. L.; Sandoz, G. R.; Skinner, N. C.

    1998-01-01

    The goal of this research is more precise description of adaptation to sensory rearrangements, including microgravity, by development of improved procedures for assessing spatial orientation perception. Thirty-six subjects reported perceived self-motion following exposure to complex inertial-visual motion. Twelve subjects were assigned to each of 3 perceptual reporting procedures: (a) animation movie selection, (b) written report selection and (c) verbal report generation. The question addressed was: do reports produced by these procedures differ with respect to complexity and reliability? Following repeated (within-day and across-day) exposures to 4 different "motion profiles," subjects either (a) selected movies presented on a laptop computer, or (b) selected written descriptions from a booklet, or (c) generated self-motion verbal descriptions that corresponded most closely with their motion experience. One "complexity" and 2 reliability "scores" were calculated. Contrary to expectations, reliability and complexity scores were essentially equivalent for the animation movie selection and written report selection procedures. Verbal report generation subjects exhibited less complexity than did subjects in the other conditions and their reports were often ambiguous. The results suggest that, when selecting from carefully written descriptions and following appropriate training, people may be better able to describe their self-motion experience with words than is usually believed.

  14. Engineering support activities for the Apollo 17 Surface Electrical Properties Experiment.

    NASA Technical Reports Server (NTRS)

    Cubley, H. D.

    1972-01-01

    Description of the engineering support activities which were required to ensure fulfillment of objectives specified for the Apollo 17 SEP (Surface Electrical Properties) Experiment. Attention is given to procedural steps involving verification of hardware acceptability to the astronauts, computer simulation of the experiment hardware, field trials, receiver antenna pattern measurements, and the qualification test program.

  15. From Description to Explanation: An Empirical Exploration of the African-American Pipeline Problem in STEM

    ERIC Educational Resources Information Center

    Brown, Bryan A.; Henderson, J. Bryan; Gray, Salina; Donovan, Brian; Sullivan, Shayna; Patterson, Alexis; Waggstaff, William

    2016-01-01

    We conducted a mixed-methods study of matriculation issues for African-Americans in the STEM pipeline. The project compares the experiences of students currently majoring in science (N?=?304) with the experiences of those who have succeeded in earning science degrees (N?=?307). Participants were surveyed about their pipeline experiences based on…

  16. Adult English Language Learners Constructing and Sharing Their Stories and Experiences: The Cultural and Linguistic Autobiography Writing Project

    ERIC Educational Resources Information Center

    Park, Gloria

    2011-01-01

    This article is the culmination of the Cultural and Linguistic Autobiography (CLA) writing project, which details narrative descriptions of adult English language learners' (ELLs') cultural and linguistic experiences and how those experiences may have influenced the ways in which these learners constructed and reconstructed their identities.…

  17. Questions of Ecopedagogy in Tropical OceanScapes in the Age of Coral Ecocide: An Autoethnographic Description

    ERIC Educational Resources Information Center

    Whitehouse, Hilary

    2018-01-01

    OceanScaping/scoping and the ecopedagogy of snorkeling are not well documented in the environmental education literature. This article focuses on the educative value of immersive saltwater experiences as pedagogical experience/s within coral reefs offshore from the tropical Australian city of Cairns. Drawing on a series of autoethnographic…

  18. A Phenomenological Study of Middle Grade Female and Male Students' Single-Sex Mathematical Experiences

    ERIC Educational Resources Information Center

    Simpson, Amber; Che, S. Megan

    2016-01-01

    Utilizing a descriptive phenomenological design, this study examines the lived experiences of seven middle grade students, four females and three males, enrolled in a single-sex mathematics classroom within a coeducational school setting. The intent of the study is to understand, from students themselves, about the experience of single-sex…

  19. NASA quiet short-haul research aircraft experimenters' handbook

    NASA Technical Reports Server (NTRS)

    Mccracken, R. C.

    1980-01-01

    A summary of guidelines and particulars concerning the use of the NASA-Ames Research Center Quiet Short-Haul Research Aircraft for applicable flight experiments is presented. Procedures for submitting experiment proposals are included along with guidelines for experimenter packages, an outline of experiment selection processes, a brief aircraft description, and additional information regarding support at Ames.

  20. United States societal experiments via the Communications Technology Satellite

    NASA Technical Reports Server (NTRS)

    Donoughe, P. L.

    1976-01-01

    After a brief description of the Communication Technology Satellite and its U.S. coverage, the U.S. societal experiments via the CTS are discussed. These include education (college curriculum sharing, and project interchange), health care (biomedical communications, health communications, and communication support for decentralized education), and community and special experiments (satellite library information network, and transportable earth terminal).

  1. Postdoctoral Positions as Preparation for Desired Careers: A Narrative Approach to Understanding Postdoctoral Experience

    ERIC Educational Resources Information Center

    Chen, Shuhua; McAlpine, Lynn; Amundsen, Cheryl

    2015-01-01

    Doing a "postdoc" following a doctorate is becoming more and more common worldwide as the pre-tenure job market continues shrinking in relation to the number of PhD graduates. Yet, behind statistics and descriptions of collective experience, how individuals experience the postdoctoral period is largely unknown, especially how they use…

  2. Gradient Heating Facility. Experiment cartridges. Description and general specifications

    NASA Technical Reports Server (NTRS)

    Breton, J.

    1982-01-01

    Specifications that define experiment cartridges that are compatible with the furnace of the gradient heating facility on board the Spacelab are presented. They establish a standard cartridge design independent of the type of experiment to be conducted. By using them, experimenters can design, construct, and test the hot section of the cartridge, known as the high temperature nacelle.

  3. HICO and RAIDS Experiment Payload - Remote Atmospheric and Ionospheric Detection System (RAIDS)

    NASA Technical Reports Server (NTRS)

    Budzien, Scott

    2009-01-01

    The HICO and RAIDS Experiment Payload - Remote Atmospheric and Ionospheric Detection System (HREP-RAIDS) experiment will provide atmospheric scientists with a complete description of the major constituents of the thermosphere (layer of the Earth's atmosphere) and ionosphere (uppermost layer of the Earth's atmosphere), global electron density profiles at altitudes between 100 - 350 kilometers.

  4. School Nurse Resilience: Experiences after Multiple Natural Disasters

    ERIC Educational Resources Information Center

    Broussard, Lisa; Myers, Rachel

    2010-01-01

    This qualitative descriptive study explored the experiences of school nurses in coastal Louisiana, who were affected by Hurricanes Gustav and Ike in 2008 and who had also been in the path of destruction caused by Hurricanes Katrina and Rita in 2005. The purpose of the study was to describe the experiences of school nurses affected by repeated…

  5. Diverse recreation experiences at Denali National Park and Preserve

    Treesearch

    Katie Knotek; Alan Watson; Neal Christensen

    2007-01-01

    Qualitative interviews were conducted at Denali National Park and Preserve in the 2004 summer use season to improve understanding of recreation visitor experiences in the remote southern portion of the park, including Mount McKinley and the surrounding mountains and glaciers. Descriptions of the experiences of visitors to the mountains and glaciers included elements of...

  6. Chemical release and radiation effects experiment advanced planning and coordination

    NASA Technical Reports Server (NTRS)

    Vaughan, William W.; Alzmann, Melanie

    1991-01-01

    The efforts conducted to provide assessments and planning support for the Chemical Release and Radiation Effects Satellite (CRRES) Experiments are summarized. Included are activities regarding scientific working group and workshop development including the preparation of descriptive information on the CRRES Project.

  7. The Way of Sweat.

    ERIC Educational Resources Information Center

    Leonhardy, Galen

    2001-01-01

    Presents a narrative description of experiences shared by the author, his father, and a Nez Perce man named Larry Greene. Explores those experiences in relation to institutionalized education in order to provide insight into not only subjugated ways of knowing but also alternative places of learning. (SG)

  8. Special Education Paraprofessionals in District Context

    ERIC Educational Resources Information Center

    Howley, Craig; Howley, Aimee; Telfer, Deborah

    2017-01-01

    This survey research investigated the experience of Ohio districts using paraprofessionals assigned to special education students. This study provides a unique statewide description of district experience. Based on themes from the literature and preliminary conversations with educational practitioners in Ohio, the survey conceptualized district…

  9. View from My Classroom: A Spectrophotometry Unit for Advanced Chemistry Students.

    ERIC Educational Resources Information Center

    Diehl-Jones, Susan M.

    1983-01-01

    Rationale, objectives, and instructional strategies for a directed study course on spectrophotometry are provided. Descriptions of three experiments and four student research projects are also provided. Objectives, laboratory procedures, advantages, and disadvantages for the experiments and projects are included. (JN)

  10. Surface electrical properties experiment, part 1. [flown on Apollo 17

    NASA Technical Reports Server (NTRS)

    Strangway, D. W.; Annan, A. P.; Redman, J. D.; Rossiter, J. R.; Rylaarsdam, J. A.; Watts, R. D.

    1974-01-01

    The work is reported which was performed on the Surface Electrical Properties Experiment Data Acquisition System. Areas discussed include: data handling and processing, installation and external signal application, operation of the equipment, and digital output. Detailed circuit descriptions are included.

  11. Chemical release and radiation effects experiment advanced planned

    NASA Technical Reports Server (NTRS)

    Vaughan, William W.; Alzmann, Melanie

    1990-01-01

    A summary of the efforts conducted to provide assessments and planning support for the Chemical Release and Radiation Experiment Satellite (CRRES) is reported. Included are activities regarding scientific working group and workshop development including the preparation of descriptive information on the CRRES project.

  12. Experimenting with Guitar Strings

    NASA Astrophysics Data System (ADS)

    LoPresto, Michael C.

    2006-11-01

    What follows is a description of a simple experiment developed in a nonmathematical general education science course on sound and light for fine arts students in which a guitar is used with data collection hardware and software to verify the properties of standing waves on a string.

  13. Description-based reappraisal regulate the emotion induced by erotic and neutral images in a Chinese population.

    PubMed

    Peng, Jiaxin; Qu, Chen; Gu, Ruolei; Luo, Yue-Jia

    2012-01-01

    Previous emotion-regulation research has shown that the late positive potential (LPP) is sensitive to the down-regulation of emotion; however, whether LPP is also sensitive to the up-regulation of emotion remains unclear. The present study examined the description-based reappraisal effects on the up-regulation of positive emotions induced by erotic and neutral images in a Chinese population. Self-reported ratings and event-related potential (ERP) were recorded when subjects viewed pleasant and neutral images, which were shown after either a neutral or positive description. Self-reported results showed that images following positive descriptions were rated as more pleasant compared to images following neutral descriptions. ERP results revealed that the P2, P3, and slow wave (SW) components were larger for erotic pictures than for neutral pictures, while the positive description condition yielded attenuated erotic image-induced P2, P3 and SW and increased SW induced by neutral images. The results demonstrated that description-based reappraisal, as a method of reappraisal, significantly modulates the emotional experience and ERP responses to erotic and neutral images.

  14. Description-based reappraisal regulate the emotion induced by erotic and neutral images in a Chinese population

    PubMed Central

    Peng, Jiaxin; Qu, Chen; Gu, Ruolei; Luo, Yue-Jia

    2013-01-01

    Previous emotion-regulation research has shown that the late positive potential (LPP) is sensitive to the down-regulation of emotion; however, whether LPP is also sensitive to the up-regulation of emotion remains unclear. The present study examined the description-based reappraisal effects on the up-regulation of positive emotions induced by erotic and neutral images in a Chinese population. Self-reported ratings and event-related potential (ERP) were recorded when subjects viewed pleasant and neutral images, which were shown after either a neutral or positive description. Self-reported results showed that images following positive descriptions were rated as more pleasant compared to images following neutral descriptions. ERP results revealed that the P2, P3, and slow wave (SW) components were larger for erotic pictures than for neutral pictures, while the positive description condition yielded attenuated erotic image-induced P2, P3 and SW and increased SW induced by neutral images. The results demonstrated that description-based reappraisal, as a method of reappraisal, significantly modulates the emotional experience and ERP responses to erotic and neutral images. PMID:23335894

  15. A Room with a Viewpoint Revisited: Descriptive Norms and Hotel Guests' Towel Reuse Behavior

    PubMed Central

    Bohner, Gerd; Schlüter, Lena E.

    2014-01-01

    Field experiments on descriptive norms as a means to increase hotel guests' towel reuse [1] were replicated and extended. In two hotels in Germany (Study 1: N = 724; Study 2: N = 204), descriptive norm messages suggesting that 75% of guests had reused their towels, or a standard message appealing to environmental concerns, were placed in guests' bathrooms. Descriptive norm messages varied in terms of proximity of the reference group (“hotel guests” vs. “guests in this room”) and temporal proximity (currently vs. two years previous). Reuse of towels was unobtrusively recorded. Results showed that reuse rates were high overall and that both standard and descriptive norm messages increased reuse rates compared to a no-message baseline. However, descriptive norm messages were not more effective than the standard message, and effects of proximity were inconsistent across studies. Discussion addresses cultural and conceptual issues in comparing the present findings with previous ones. PMID:25084348

  16. Exploring the Experience of Novelty When Viewing Creative Adverts: An ERP Study.

    PubMed

    Zhou, Shujin; Yin, Yue; Yu, Tingting; Stupple, Edward J N; Luo, Junlong

    2018-01-01

    The electrophysiological correlates of experiencing novelty in creative advertising were studied in 28 healthy subjects using event-related potentials. Participants viewed images that were difficult to interpret until a description was presented providing either a creative description (CD) featuring an unexpected description of the image based on the original advertisement, or a normal description (ND), which was a literal description of the image (and served as a baseline condition). Participants evaluated the level of creativity of the description. The results showed that the N2 amplitude was higher for CDs than for NDs across middle and right scalp regions between 240 and 270 ms, most likely reflecting conflict detection. Moreover, CDs demonstrated greater N400 than NDs in a time window between 380 and 500 ms, it is argued that this reflects semantic integration. The present study investigates the electrophysiological correlates of experiencing novelty in advertising with ecologically valid stimuli. This substantially extends the findings of earlier laboratory studies with more artificial stimuli.

  17. What's in a name? Group fitness class names and women's reasons for exercising.

    PubMed

    Brown, Theresa C; Miller, Bridget M; Adams, Bailey M

    2017-01-01

    The benefits of intrinsic exercise motivation are well recognized, yet extrinsically focused group-fitness class names/descriptions dominate the fitness industry. To explore the impact of how fitness classes are marketed, women (N = 389) were asked to indicate their preference for either intrinsically or extrinsically focused fitness classes based on title/description. Participants who favored intrinsic class names/descriptions were more likely to report greater interest/enjoyment, perceived competence, and greater effort and report exercising for health/fitness-related reasons. Those favoring extrinsic class names/descriptions were more likely to experience tension/pressure when exercising and report exercising for appearance/weight-related reasons. The results demonstrate the importance of wording when marketing fitness classes.

  18. Life sciences payloads for Shuttle

    NASA Technical Reports Server (NTRS)

    Dunning, R. W.

    1974-01-01

    The Life Sciences Program for utilization of the Shuttle in the 1980's is presented. Requirements for life sciences research experiments in space flight are discussed along with study results of designs to meet these requirements. The span of life sciences interests in biomedicine, biology, man system integration, bioinstrumentation and life support/protective systems is described with a listing of the research areas encompassed in these descriptions. This is followed by a description of the approach used to derive from the life sciences disciplines, the research functions and instrumentation required for an orbital research program. Space Shuttle design options for life sciences experiments are identified and described. Details are presented for Spacelab laboratories for dedicated missions, mini-labs with carry on characteristics and carry on experiments for shared payload missions and free flying satellites to be deployed and retrieved by the Shuttle.

  19. Surface energy and radiation balance systems - General description and improvements

    NASA Technical Reports Server (NTRS)

    Fritschen, Leo J.; Simpson, James R.

    1989-01-01

    Surface evaluation of sensible and latent heat flux densities and the components of the radiation balance were desired for various vegetative surfaces during the ASCOT84 experiment to compare with modeled results and to relate these values to drainage winds. Five battery operated data systems equipped with sensors to determine the above values were operated for 105 station days during the ASCOT84 experiment. The Bowen ratio energy balance technique was used to partition the available energy into the sensible and latent heat flux densities. A description of the sensors and battery operated equipment used to collect and process the data is presented. In addition, improvements and modifications made since the 1984 experiment are given. Details of calculations of soil heat flow at the surface and an alternate method to calculate sensible and latent heat flux densities are provided.

  20. Bubble motion in a rotating liquid body. [ground based tests for space shuttle experiments

    NASA Technical Reports Server (NTRS)

    Annamalai, P.; Subramanian, R. S.; Cole, R.

    1982-01-01

    The behavior of a single gas bubble inside a rotating liquid-filled sphere has been investigated analytically and experimentally as part of ground-based investigations aimed at aiding in the design and interpretation of Shuttle experiments. In the analysis, a quasi-static description of the motion of a bubble was developed in the limit of small values of the Taylor number. A series of rotation experiments using air bubbles and silicone oils were designed to match the conditions specified in the analysis, i.e., the bubble size, sphere rotation rate, and liquid kinematic viscosity were chosen such that the Taylor number was much less than unity. The analytical description predicts the bubble velocity and its asymptotic location. It is shown that the asymptotic position is removed from the axis of rotation.

  1. Female Sex Offenders' Relationship Experiences

    PubMed Central

    Lawson, Louanne

    2010-01-01

    Interventions for child sexual abusers should take into account their perspectives on the context of their offenses, but no descriptions of everyday life from the offender's point of view have been published. This study therefore explored female offenders' views of their strengths and challenges. Documented risk assessments of 20 female offenders were analyzed using inductive content analysis (Cavanagh, 1997; Priest, Roberts & Woods, 2002; Woods, Priest & Roberts, 2002). The Good Lives Model provided the initial coding framework and Atlas/ti software (Muhr, 1997) was used for simultaneous data collection and analysis. The content analysis yielded 999 coding decisions organized in three themes. The global theme was relationship experiences. Offenders described the quality of their relationship experiences, including their personal perspectives, intimate relationships and social lives. These descriptions have implications for treatment planning and future research with women who have molested children. PMID:18624098

  2. An interpretive description of chemotherapy-induced premature menopause among Latinas with breast cancer.

    PubMed

    Brisbois, Maryellen D

    2014-09-01

    To describe the experience of chemotherapy-induced premature menopause (CIPM) among Latinas, explore how CIPM was assimilated into the breast cancer experience, and relate measured acculturation levels to the CIPM experience. Interpretive descriptive method from a feminist inquiry lens. Telephone interviews with participants from 12 states in the United States. 20 Latinas who experienced CIPM after treatment for breast cancer. In-depth interviews and the Brief Acculturation Scale for Hispanics were used to elicit data, with interpreter assistance as needed. One overarching theme, Bigger Than Menopause, and three subthemes, Experiencing Menopause, Ever-Changing Landscape, and Working Through the Experience, were found. PARTICIPANTS' ability to assimilate CIPM into the breast cancer experience was affected by the magnitude of physiologic and psychosocial effects, access to health care, information and support, sense of control, and acculturation level. The CIPM experience for Latinas with breast cancer is multifaceted, with less acculturated Latinas facing multiple barriers in accessing health care, treatment, information, and support. PARTICIPANTS described CIPM as part of a larger context that included physiologic and psychosocial effects and affected participants' ability to assimilate CIPM into the breast cancer experience. The impact of low acculturation and barriers experienced were elucidated as factors associated with assimilating CIPM into the breast cancer experience.

  3. Compact and Hybrid Feature Description for Building Extraction

    NASA Astrophysics Data System (ADS)

    Li, Z.; Liu, Y.; Hu, Y.; Li, P.; Ding, Y.

    2017-05-01

    Building extraction in aerial orthophotos is crucial for various applications. Currently, deep learning has been shown to be successful in addressing building extraction with high accuracy and high robustness. However, quite a large number of samples is required in training a classifier when using deep learning model. In order to realize accurate and semi-interactive labelling, the performance of feature description is crucial, as it has significant effect on the accuracy of classification. In this paper, we bring forward a compact and hybrid feature description method, in order to guarantees desirable classification accuracy of the corners on the building roof contours. The proposed descriptor is a hybrid description of an image patch constructed from 4 sets of binary intensity tests. Experiments show that benefiting from binary description and making full use of color channels, this descriptor is not only computationally frugal, but also accurate than SURF for building extraction.

  4. Nonlinear optics of fibre event horizons.

    PubMed

    Webb, Karen E; Erkintalo, Miro; Xu, Yiqing; Broderick, Neil G R; Dudley, John M; Genty, Goëry; Murdoch, Stuart G

    2014-09-17

    The nonlinear interaction of light in an optical fibre can mimic the physics at an event horizon. This analogue arises when a weak probe wave is unable to pass through an intense soliton, despite propagating at a different velocity. To date, these dynamics have been described in the time domain in terms of a soliton-induced refractive index barrier that modifies the velocity of the probe. Here we complete the physical description of fibre-optic event horizons by presenting a full frequency-domain description in terms of cascaded four-wave mixing between discrete single-frequency fields, and experimentally demonstrate signature frequency shifts using continuous wave lasers. Our description is confirmed by the remarkable agreement with experiments performed in the continuum limit, reached using ultrafast lasers. We anticipate that clarifying the description of fibre event horizons will significantly impact on the description of horizon dynamics and soliton interactions in photonics and other systems.

  5. Describing contrast across scales

    NASA Astrophysics Data System (ADS)

    Syed, Sohaib Ali; Iqbal, Muhammad Zafar; Riaz, Muhammad Mohsin

    2017-06-01

    Due to its sensitive nature against illumination and noise distributions, contrast is not widely used for image description. On the contrary, the human perception of contrast along different spatial frequency bandwidths provides a powerful discriminator function that can be modeled in a robust manner against local illumination. Based upon this observation, a dense local contrast descriptor is proposed and its potential in different applications of computer vision is discussed. Extensive experiments reveal that this simple yet effective description performs well in comparison with state of the art image descriptors. We also show the importance of this description in multiresolution pansharpening framework.

  6. The Experience of Chief Nurse in Military Operations Other Than War.

    DTIC Science & Technology

    1998-10-02

    and analyzed using procedures adapted from Colaizzi (1978), Van Manen (1990) and illuminated by Ray (1990). Significant statements were identified in...experience will lead to an understanding of the foundations of the global caregiving community. Hermeneutic phenomenology provided a description and

  7. The Value of Work Experience.

    ERIC Educational Resources Information Center

    Mahooty, David; Rainer, Lillian

    1999-01-01

    Internships enable secondary and college students to gain experience, learn how an agency functions, and establish a network of contacts within organizations. Thirty-two summer internships, co-ops, and minority school programs are listed alphabetically. Each entry contains a brief program description, prerequisites, deadline for applications, and…

  8. Methods of Feminist Family Therapy Supervision.

    ERIC Educational Resources Information Center

    Prouty, Anne M.; Thomas, Volker; Johnson, Scott; Long, Janie K.

    2001-01-01

    Presents three supervision methods which emerged from a qualitative study of the experiences of feminist family therapy supervisors and the therapists they supervised: the supervision contract, collaborative methods, and hierarchical methods. Provides a description of the participants' experiences of these methods and discusses their fit with…

  9. Experimenting with Guitar Strings

    ERIC Educational Resources Information Center

    LoPresto, Michael C.

    2006-01-01

    What follows is a description of a simple experiment developed in a non-mathematical general education science course on sound and light for fine arts students in which a guitar is used with data collection hardware and software to verify the properties of standing waves on a string.

  10. Experiences of Students Enrolled in Integrated Collaborative College/ University Programs

    ERIC Educational Resources Information Center

    Landeen, Janet; Matthew-Maich, Nancy; Marshall, Leslie; Hagerman, Lisa-Anne; Bolan, Lindsay; Parzen, Maurine; Pavkovic, Maria; Riehl, Christine; Carvalho, Joshua; Bilau, Natasha; Zhang, Zetian; Oliver, Sheri; Cottreau, Jacob; Shukla, Bhavin

    2017-01-01

    Little is known about the student experience in collaborative college/university programs, where students are enrolled in two institutions simultaneously in integrated curriculum designs. This interpretive, descriptive, qualitative study explored these students' perspectives. Sixty-eight participants enrolled in one of four collaborative programs…

  11. Process of Coping with Radiation Therapy.

    ERIC Educational Resources Information Center

    Johnson, Jean E.; And Others

    1989-01-01

    Evaluated ability of self-regulation and emotional-drive theories to explain effects of informational intervention entailing objective descriptions of experience on outcomes of coping with radiation therapy among 84 men with prostate cancer. Consistent with self-regulation theory, similarity between expectations and experience and degree of…

  12. A description of the verbal behavior of students during two reading instruction methods

    PubMed Central

    Daly, Patricia M.

    1987-01-01

    The responses of students during two reading methods, the language experience approach and two Mastery Learning programs, were analyzed using verbal operants. A description of student responding was generated for these methods. The purpose of the study was to answer the questions: What are the major controlling variables determining student reading behavior during the language experience approach and two Mastery Learning programs, and how do these controlling variables change across story reading sessions and across stories in the first method? Student responses by verbal operant were compared for both reading methods. Findings indicated higher frequencies of textual operants occurred in responses during the Mastery Learning programs. A greater reliance on intraverbal control was evident in responses during the language experience approach. It is suggested that students who can generate strong intraverbal responses and who may have visual discrimination problems during early reading instruction may benefit from use of the language experience approach at this stage. ImagesFigure 2Figure 3 PMID:22477535

  13. Parents' Experiences Following Children's Moderate to Severe Traumatic Brain Injury: A Clash of Cultures

    PubMed Central

    Roscigno, Cecelia I.; Swanson, Kristen M.

    2012-01-01

    Little is understood about parents' experiences following children's moderate to severe traumatic brain injury (TBI). Using descriptive phenomenology we explored common experiences of parents whose children were diagnosed with moderate to severe TBI. Parents from across the United States (N = 42 from 37 families) participated in two semistructured interviews (~ 90 minutes and 12–15 months apart) in the first five years following children's TBI. First interviews were in person. Second interviews, done in person or by phone, facilitated updating parents' experiences and garnering their critique of the descriptive model. Parent themes were: (a) grateful to still have my child; (b) grieving for the child I knew; (c) running on nerves; and (d) grappling to get what your child and family need. Parents reported cultural barriers because of others' misunderstandings. More qualitative inquiry is needed to understand how the knowledge, attitudes, beliefs, and expectations of others (culture) influence parents' interactions and the family's adjustment and well-being. PMID:21613654

  14. Of black swans and tossed coins: is the description-experience gap in risky choice limited to rare events?

    PubMed

    Ludvig, Elliot A; Spetch, Marcia L

    2011-01-01

    When faced with risky decisions, people tend to be risk averse for gains and risk seeking for losses (the reflection effect). Studies examining this risk-sensitive decision making, however, typically ask people directly what they would do in hypothetical choice scenarios. A recent flurry of studies has shown that when these risky decisions include rare outcomes, people make different choices for explicitly described probabilities than for experienced probabilistic outcomes. Specifically, rare outcomes are overweighted when described and underweighted when experienced. In two experiments, we examined risk-sensitive decision making when the risky option had two equally probable (50%) outcomes. For experience-based decisions, there was a reversal of the reflection effect with greater risk seeking for gains than for losses, as compared to description-based decisions. This fundamental difference in experienced and described choices cannot be explained by the weighting of rare events and suggests a separate subjective utility curve for experience.

  15. Of Black Swans and Tossed Coins: Is the Description-Experience Gap in Risky Choice Limited to Rare Events?

    PubMed Central

    Ludvig, Elliot A.; Spetch, Marcia L.

    2011-01-01

    When faced with risky decisions, people tend to be risk averse for gains and risk seeking for losses (the reflection effect). Studies examining this risk-sensitive decision making, however, typically ask people directly what they would do in hypothetical choice scenarios. A recent flurry of studies has shown that when these risky decisions include rare outcomes, people make different choices for explicitly described probabilities than for experienced probabilistic outcomes. Specifically, rare outcomes are overweighted when described and underweighted when experienced. In two experiments, we examined risk-sensitive decision making when the risky option had two equally probable (50%) outcomes. For experience-based decisions, there was a reversal of the reflection effect with greater risk seeking for gains than for losses, as compared to description-based decisions. This fundamental difference in experienced and described choices cannot be explained by the weighting of rare events and suggests a separate subjective utility curve for experience. PMID:21673807

  16. Preliminary navigation accuracy analysis for the TDRSS Onboard Navigation System (TONS) experiment on EP/EUVE

    NASA Technical Reports Server (NTRS)

    Gramling, C. J.; Long, A. C.; Lee, T.; Ottenstein, N. A.; Samii, M. V.

    1991-01-01

    A Tracking and Data Relay Satellite System (TDRSS) Onboard Navigation System (TONS) is currently being developed by NASA to provide a high accuracy autonomous navigation capability for users of TDRSS and its successor, the Advanced TDRSS (ATDRSS). The fully autonomous user onboard navigation system will support orbit determination, time determination, and frequency determination, based on observation of a continuously available, unscheduled navigation beacon signal. A TONS experiment will be performed in conjunction with the Explorer Platform (EP) Extreme Ultraviolet Explorer (EUVE) mission to flight quality TONS Block 1. An overview is presented of TONS and a preliminary analysis of the navigation accuracy anticipated for the TONS experiment. Descriptions of the TONS experiment and the associated navigation objectives, as well as a description of the onboard navigation algorithms, are provided. The accuracy of the selected algorithms is evaluated based on the processing of realistic simulated TDRSS one way forward link Doppler measurements. The analysis process is discussed and the associated navigation accuracy results are presented.

  17. Field experiences with rub induced instabilities in turbomachinery

    NASA Technical Reports Server (NTRS)

    Goggin, D. G.

    1982-01-01

    Rotordynamic instability problems are not uncommon in high speed industrial turbomachinery. One type of the many destabilizing forces that can occur is caused by a rub between the stationary and rotating parts. Descriptions are given of several cases of rub induced instabilities. Included in the descriptions are the conditions at onset, the whirl frequency and direction, and the steps taken to eliminate the problem.

  18. Collapse of the soap-film bridge - Quasistatic description

    NASA Astrophysics Data System (ADS)

    Cryer, Steven A.; Steen, Paul H.

    1992-11-01

    Observations of the collapse of a soap-film bridge from a connected to a disconnected state are recorded. The equilibrium framework for this nonequilibrium event is classical. Experiments confirm predictions of stable and unstable equilibria. A quasistatic description is introduced for the dynamic states to extend the static theory. It is found to adequately describe the collapse trajectory while the bridge is still connected.

  19. Collapse of the soap-film bridge - Quasistatic description

    NASA Technical Reports Server (NTRS)

    Cryer, Steven A.; Steen, Paul H.

    1992-01-01

    Observations of the collapse of a soap-film bridge from a connected to a disconnected state are recorded. The equilibrium framework for this nonequilibrium event is classical. Experiments confirm predictions of stable and unstable equilibria. A quasistatic description is introduced for the dynamic states to extend the static theory. It is found to adequately describe the collapse trajectory while the bridge is still connected.

  20. How directions of route descriptions influence orientation specificity: the contribution of spatial abilities.

    PubMed

    Meneghetti, Chiara; Muffato, Veronica; Varotto, Diego; De Beni, Rossana

    2017-03-01

    Previous studies found mental representations of route descriptions north-up oriented when egocentric experience (given by the protagonist's initial view) was congruent with the global reference system. This study examines: (a) the development and maintenance of representations derived from descriptions when the egocentric and global reference systems are congruent or incongruent; and (b) how spatial abilities modulate these representations. Sixty participants (in two groups of 30) heard route descriptions of a protagonist's moves starting from the bottom of a layout and headed mainly northwards (SN description) in one group, and headed south from the top (NS description, the egocentric view facing in the opposite direction to the canonical north) in the other. Description recall was tested with map drawing (after hearing the description a first and second time; i.e. Time 1 and 2) and South-North (SN) or North-South (NS) pointing tasks; and spatial objective tasks were administered. The results showed that: (a) the drawings were more rotated in NS than in SN descriptions, and performed better at Time 2 than at Time 1 for both types of description; SN pointing was more accurate than NS pointing for the SN description, while SN and NS pointing accuracy did not differ for the NS description; (b) spatial (rotation) abilities were related to recall accuracy for both types of description, but were more so for the NS ones. Overall, our results showed that the way in which spatial information is conveyed (with/without congruence between the egocentric and global reference systems) and spatial abilities influence the development and maintenance of mental representations.

  1. "To look at death another way": Black teenage males' perspectives on second-lines and regular funerals in New Orleans.

    PubMed

    Bordere, Tashel C

    The purpose of this study was to describe how Black adolescent males understand "second-line" (musical processions) and "regular"/traditional funeral rituals in New Orleans following the violent deaths of significant persons in their lives. In-depth interviews were conducted with 10 Black males between the ages of 12 and 15 using descriptive phenomenology methodology. Findings revealed that these participants understood death as a cause for celebration, remembrance, and unity related to their experiences with the second-line ritual. Three elements of the life world of Black teenage males were descriptive of second lines, including: a) observed locations of second lines; b) dancing to good music; and c) observed messages conveyed through t-shirts. Participants provided gender-based descriptions of perceived spoken and unspoken rights in grieving at the two distinct rituals. Related to their second-line experience, the teens reflect on ways in which they wish to have their deaths ritualized.

  2. Gender as a Context for Interpreting the Self-Directed Learning Experiences of Prostate and Breast Cancer Patients

    ERIC Educational Resources Information Center

    Rager, Kathleen B.

    2007-01-01

    This article reports the findings from a secondary analysis of the data from two qualitative studies conducted by the researcher regarding the self-directed learning experiences of prostate and breast cancer patients. Of interest were possible differences in the descriptions of the participants' experiences that appear to relate to gender.…

  3. Born Too Soon: What Can We Expect? Nature of Home Literacy Experiences for Children with Very Low Birth Weight

    ERIC Educational Resources Information Center

    Ragusa, G.

    2009-01-01

    This study documents the home literacy experiences of children born with very low birth weight (VLBW). The study's design was modelled after Purcell-Gates' study of social domains mediated by print as home literacy experiences. A design combining purposeful sampling, semi-structured data collection and descriptive case study analysis was employed…

  4. An Examination of Children's Oral Storytelling in a First Grade Storytelling Circle

    ERIC Educational Resources Information Center

    West, Jean Ann

    2012-01-01

    The purposes of this naturalistic, descriptive study were to examine the stories that children in one first grade classroom told in a storytelling circle, how the children's knowledge, in-school experiences, and out-of-school experiences were reflected in their stories, and how the children used their knowledge and experiences as tools to…

  5. The Influence of Lived Experience with Addiction and Recovery on Practice-Related Decisions among Professionals Working in Addiction Agencies Serving Women

    ERIC Educational Resources Information Center

    Novotna, Gabriela; Dobbins, Maureen; Jack, Susan M.; Sword, Wendy; Niccols, Alison; Brooks, Sandy; Henderson, Joanna

    2013-01-01

    Aims: The study objectives were to: (1) understand the value attributed to the lived experience of addiction and recovery among professionals working in addiction agencies serving women in Canada and (2) describe how lived experience influence practice-related decision-making. Methods: A descriptive qualitative study was conducted with a…

  6. Novel Immune Modulating Cellular Vaccine for Prostate Cancer Immunotherapy

    DTIC Science & Technology

    2016-10-01

    transgenic mice are taking much longer than we anticipated. This is because the experiments start when mice are 12 weeks old...as they are harder to breed . Importantly, we cannot always stagger the experiments, because data from the preceding experiment is used to plan...description is below. Monitoring autoimmune prostatitis (lymphomononuclear cell infiltrates in prostate gland): Non- transgenic male mice (BL/6)

  7. How are the Experiences and Needs of Families of Individuals with Mental Illness Reflected in Medical Education Guidelines?

    ERIC Educational Resources Information Center

    Riebschleger, Joanne; Scheid, Jeanette; Luz, Clare; Mickus, Maureen; Liszewski, Christine; Eaton, Monaca

    2008-01-01

    Objective: This descriptive study explored the extent that medical education curriculum guidelines contained content about the experiences and needs of family members of people with serious mental illness. Methods: Key family-focused-literature themes about the experiences and needs of families of individuals with mental illness were drawn from a…

  8. Preservice Teachers as Agents of Change: An Experiment. Teacher Education Forum; Volume 4, Number 3.

    ERIC Educational Resources Information Center

    Mohn, Norman; Reinhartz, Judy

    This paper is a description of an undergraduate experiment initiated at the University of Texas at Arlington during the academic year 1974-75. The thrust of the experiment was to instill more realism in the professional courses at the Education Department and simultaneously to assist in instigating changes in the public schools. A document…

  9. Acoustic processing method for MS/MS experiments

    NASA Technical Reports Server (NTRS)

    Whymark, R. R.

    1973-01-01

    Acoustical methods in which intense sound beams can be used to control the position of objects are considered. The position control arises from the radiation force experienced when a body is placed in a sound field. A description of the special properties of intense sound fields useful for position control is followed by a discussion of the more obvious methods of position, namely the use of multiple sound beams. A new type of acoustic position control device is reported that has advantages of simplicity and reliability and utilizes only a single sound beam. Finally a description is given of an experimental single beam levitator, and the results obtained in a number of key levitation experiments.

  10. On a basic model of circulatory, fluid, and electrolyte regulation in the human system based upon the model of Guyton

    NASA Technical Reports Server (NTRS)

    White, R. J.

    1973-01-01

    A detailed description of Guyton's model and modifications are provided. Also included are descriptions of several typical experiments which the model can simulate to illustrate the model's general utility. A discussion of the problems associated with the interfacing of the model to other models such as respiratory and thermal regulation models which is prime importance since these stimuli are not present in the current model is also included. A user's guide for the operation of the model on the Xerox Sigma 3 computer is provided and two programs are described. A verification plan and procedure for performing experiments is also presented.

  11. Swedish Lower Secondary School Teachers' Perceptions and Experiences Regarding Homework

    ERIC Educational Resources Information Center

    Gu, Limin; Kristoffersson, Margaretha

    2015-01-01

    This study investigates homework in Swedish lower secondary schools: teachers' perceptions and experiences about it and their understanding of its potentials and challenges for students' learning and development. Data collected through an online survey (N = 201) mixed standardized questions and open questions. Descriptive statistics and…

  12. Determining Planetary Temperatures with the Stefan-Boltzmann Law

    ERIC Educational Resources Information Center

    LoPresto, Michael C.; Hagoort, Nichole

    2011-01-01

    What follows is a description of several activities involving the Stefan-Boltzmann radiation law that can provide laboratory experience beyond what is normally found in traditional introductory thermodynamics experiments on thermal expansion, specific heat, and heats of transformation. The activities also provide more extensive coverage of and…

  13. SKOLE: The Journal of Alternative Education, 1996.

    ERIC Educational Resources Information Center

    Leue, Mary, Ed.

    1996-01-01

    The four issues of "SKOLE" published in 1996 include articles about alternatives to public education, the value of free schools and home-schooling, and children's learning experiences. Feature articles include profiles of alternative schools and educational programs; descriptions of learning experiences and teaching practices; a study of full…

  14. The Transportable Measurements Facility (TMF) System Description.

    DTIC Science & Technology

    1980-05-23

    sites using different antennas, antenna/site characterization, ATCRBS-mode and DABS-mode processor evaluation, and DABS-based ATC and ATARS system...conditions met. 34 TABLE 3 TMF DATA RECORDED DURING EXPERIMENTS By Word Type 1) By Parameter Word No. of Bits Experiment Number 8 Physical Location Number of

  15. 78 FR 13375 - Information Collection Request Sent to the Office of Management and Budget (OMB) for Approval...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-27

    ... enjoyable visitor experience at a reasonable rate. Organizational structure and history. Experience with... collection. Description of Respondents: Businesses, individuals, and nonprofit organizations. Respondent's... visitors. We use this information to objectively evaluate offers received for a particular business...

  16. Data analysis and software support for the Earth radiation budget experiment

    NASA Technical Reports Server (NTRS)

    Edmonds, W.; Natarajan, S.

    1987-01-01

    Computer programming and data analysis efforts were performed in support of the Earth Radiation Budget Experiment (ERBE) at NASA/Langley. A brief description of the ERBE followed by sections describing software development and data analysis for both prelaunch and postlaunch instrument data are presented.

  17. A Practical and Convenient Diffusion Apparatus: An Undergraduate Physical Chemistry Experiment.

    ERIC Educational Resources Information Center

    Clifford, Ben; Ochiai, E. I.

    1980-01-01

    Described is a diffusion apparatus to be used in an undergraduate physical chemistry laboratory experiment to determine the diffusion coefficients of aqueous solutions of sucrose and potassium dichromate. Included is the principle of the method, apparatus design and description, and experimental procedure. (Author/DS)

  18. Brotherhood and College Latinos: A Phenomenological Study

    ERIC Educational Resources Information Center

    Estrada, Fernando; Mejia, Araceli; Hufana, Alyssa Mae

    2017-01-01

    An understudied topic is the social experiences of college Latinos. In this study, six men shared their experience of brotherhood or "hermandad". Individual interviews yielded qualitative data that were subjected to inductive coding resulting in seven descriptive themes conveying the essence of brotherhood. The findings and implications…

  19. Perceptions of Mentoring: Examining the Experiences of Women Superintendents

    ERIC Educational Resources Information Center

    Copeland, Scarlett M.; Calhoun, Daniel W.

    2014-01-01

    This descriptive mixed methods study gathered both quantitative and qualitative data on the mentoring experiences of women superintendents in a Southeastern state. The quantitative participants included 39 women superintendents from this state and the qualitative portion of the study was comprised of eight female superintendents purposefully…

  20. Combined Release and Radiation Effects Satellite (CRRES) Experiment: Educational planning and coordination

    NASA Technical Reports Server (NTRS)

    Vaughan, William W.; Alzmann, Melanie

    1991-01-01

    The efforts conducted to provide educational planning and development support for the Combined Release and Radiation Satellite (CRRES) Experiment are summarized. Activities regarding the scientific working group and workshop development are presented including the preparation of descriptive information on the CRRES Project.

  1. Reflecting on the challenges of building a rich interconnected metadata database to describe the experiments of phase six of the coupled climate model intercomparison project (CMIP6) for the Earth System Documentation Project (ES-DOC) and anticipating the opportunities that tooling and services based on rich metadata can provide.

    NASA Astrophysics Data System (ADS)

    Pascoe, C. L.

    2017-12-01

    The Coupled Model Intercomparison Project (CMIP) has coordinated climate model experiments involving multiple international modelling teams since 1995. This has led to a better understanding of past, present, and future climate. The 2017 sixth phase of the CMIP process (CMIP6) consists of a suite of common experiments, and 21 separate CMIP-Endorsed Model Intercomparison Projects (MIPs) making a total of 244 separate experiments. Precise descriptions of the suite of CMIP6 experiments have been captured in a Common Information Model (CIM) database by the Earth System Documentation Project (ES-DOC). The database contains descriptions of forcings, model configuration requirements, ensemble information and citation links, as well as text descriptions and information about the rationale for each experiment. The database was built from statements about the experiments found in the academic literature, the MIP submissions to the World Climate Research Programme (WCRP), WCRP summary tables and correspondence with the principle investigators for each MIP. The database was collated using spreadsheets which are archived in the ES-DOC Github repository and then rendered on the ES-DOC website. A diagramatic view of the workflow of building the database of experiment metadata for CMIP6 is shown in the attached figure.The CIM provides the formalism to collect detailed information from diverse sources in a standard way across all the CMIP6 MIPs. The ES-DOC documentation acts as a unified reference for CMIP6 information to be used both by data producers and consumers. This is especially important given the federated nature of the CMIP6 project. Because the CIM allows forcing constraints and other experiment attributes to be referred to by more than one experiment, we can streamline the process of collecting information from modelling groups about how they set up their models for each experiment. End users of the climate model archive will be able to ask questions enabled by the interconnectedness of the metadata such as "Which MIPs make use of experiment A?" and "Which experiments use forcing constraint B?".

  2. Sampling Participants’ Experience in Laboratory Experiments: Complementary Challenges for More Complete Data Collection

    PubMed Central

    McAuliffe, Alan; McGann, Marek

    2016-01-01

    Speelman and McGann’s (2013) examination of the uncritical way in which the mean is often used in psychological research raises questions both about the average’s reliability and its validity. In the present paper, we argue that interrogating the validity of the mean involves, amongst other things, a better understanding of the person’s experiences, the meaning of their actions, at the time that the behavior of interest is carried out. Recently emerging approaches within Psychology and Cognitive Science have argued strongly that experience should play a more central role in our examination of behavioral data, but the relationship between experience and behavior remains very poorly understood. We outline some of the history of the science on this fraught relationship, as well as arguing that contemporary methods for studying experience fall into one of two categories. “Wide” approaches tend to incorporate naturalistic behavior settings, but sacrifice accuracy and reliability in behavioral measurement. “Narrow” approaches maintain controlled measurement of behavior, but involve too specific a sampling of experience, which obscures crucial temporal characteristics. We therefore argue for a novel, mid-range sampling technique, that extends Hurlburt’s descriptive experience sampling, and adapts it for the controlled setting of the laboratory. This controlled descriptive experience sampling may be an appropriate tool to help calibrate both the mean and the meaning of an experimental situation with one another. PMID:27242588

  3. Experiences of time: a qualitative inquiry into experiences of time as described by palliative care inpatients.

    PubMed

    Robertson, Matra

    2015-02-01

    In palliative care, health professionals provide support and care for patients for the duration of the unknown time toward death. While the experiences of patients diagnosed with a life limiting illness in palliative care have received some scholarly attention, little research has explored these experiences as described by palliative inpatients themselves. The purpose of this article is to explore how patients describe their lived experiences of time while in a palliative inpatient facility. This study used a qualitative phenomenological method and nine inpatients were recruited. They were interviewed utilizing in-depth semi-structured interviews, which were audio taped and transcribed. These interview transcripts of their descriptions were the data sources for this inquiry. Their description is part of a broader phenomenological inquiry on the experience of living with a life limiting illness described by palliative inpatients. Data were analyzed to identify essential themes within and across cases. Three essential themes were revealed: "brief time"; "waiting time," and "transcendental horizon: future time." These themes were not mutually exclusive and participant's experiences of time approaching death were described as a time of living toward death. The findings suggest that patients diagnosed with a life limiting illness have multi-dimensional experiences of time. Understanding the experiences of temporality for patients close to the gravity of death, from the patients' own words, can provide direction for patient informed interventions in clinical practice.

  4. Apollo experience report. Crew-support activities for experiments performed during manned space flight

    NASA Technical Reports Server (NTRS)

    Mckee, J. W.

    1974-01-01

    Experiments are performed during manned space flights in an attempt to acquire knowledge that can advance science and technology or that can be applied to operational techniques for future space flights. A description is given of the procedures that the personnel who are directly assigned to the function of crew support at the NASA Lyndon B. Johnson Space Center use to prepare for and to conduct experiments during space flight.

  5. Accuracy and Calibration of High Explosive Thermodynamic Equations of State

    DTIC Science & Technology

    2010-08-01

    physics descriptions, but can also mean increased calibration complexity. A generalized extent of aluminum reaction, the Jones-Wilkins-Lee ( JWL ) based...predictions compared to experiments 3 3 PAX-30 JWL and JWLB cylinder test predictions compared to experiments 4 4 PAX-29 JWL and JWLB cylinder test...predictions compared to experiments 5 5 Experiment and modeling comparisons for HMX/AI 85/15 7 TABLES 1 LX-14 JWL and JWLB cylinder test velocity

  6. Effects of Clozapine and Alprazolam on Cognitive Deficits and Anxiety-Like Behaviors in a Ketamine-Induced Rat Model of Schizophrenia

    DTIC Science & Technology

    2005-01-01

    xii LIST OF TABLES Table 1. DSM-IV-TR Criteria for Schizophrenia (abbreviated) Table 2. Experimental Design Table 3. Experiment #1... Experimental Timeline Table 4. Experiment #2: Experimental Timeline Table 5. Experiment #1: Results of MANOVAs for Prepulse Inhibition Variables...rats. Please see Table 2 for a description of treatments and cell sizes for each experiment . Table 2. Experimental Design Ketamine (mg/kg

  7. Quantitative monitoring of Arabidopsis thaliana growth and development using high-throughput plant phenotyping

    PubMed Central

    Arend, Daniel; Lange, Matthias; Pape, Jean-Michel; Weigelt-Fischer, Kathleen; Arana-Ceballos, Fernando; Mücke, Ingo; Klukas, Christian; Altmann, Thomas; Scholz, Uwe; Junker, Astrid

    2016-01-01

    With the implementation of novel automated, high throughput methods and facilities in the last years, plant phenomics has developed into a highly interdisciplinary research domain integrating biology, engineering and bioinformatics. Here we present a dataset of a non-invasive high throughput plant phenotyping experiment, which uses image- and image analysis- based approaches to monitor the growth and development of 484 Arabidopsis thaliana plants (thale cress). The result is a comprehensive dataset of images and extracted phenotypical features. Such datasets require detailed documentation, standardized description of experimental metadata as well as sustainable data storage and publication in order to ensure the reproducibility of experiments, data reuse and comparability among the scientific community. Therefore the here presented dataset has been annotated using the standardized ISA-Tab format and considering the recently published recommendations for the semantical description of plant phenotyping experiments. PMID:27529152

  8. Short-range components of nuclear forces: Experiment versus mythology

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Kukulin, V. I.; Platonova, M. N., E-mail: platonova@nucl-th.sinp.msu.ru

    2013-12-15

    The present-day situation around the description of various (central, spin-orbit, and tensor) components of short-range nuclear forces is discussed. A traditional picture of these interactions based on the idea of one-meson exchange is contrasted against numerous results of recent experiments. As is shown in the present study, these results often deviate strongly from the predictions of traditional models. One can therefore state that such models are inapplicable to describing short-range nuclear forces and that it is necessary to go over from a traditional description to some alternative QCD-based (or QCD-motivated) picture. This means that, despite the widespread popularity of traditionalmore » concepts of short-range nuclear forces and their applicability in many particular cases, these concepts are not more than scientific myths that show their inconsistency when analyzed from the viewpoint of the modern experiment.« less

  9. Coping experience of health concerns and physical disability for older Chinese people: A qualitative, descriptive study.

    PubMed

    Mei, He; Turale, Sue

    2017-12-01

    In this qualitative, descriptive study, we explored the perspectives of older, community-dwelling Chinese people regarding their experiences of coping with a physical disability and their health concerns. Twenty participants were interviewed in-depth, and data were analyzed using content analysis. Five themes with 13 subthemes emerged that described older people's experiences of coping with health concerns and disability: (i) ignoring health concerns; (ii) managing self; (iii) seeking medical help; (iv) living with physical disability; and (v) relying on limited resources. Most participants did not have sufficient access to health services due to physical disability and financial deficits, so they tended to ignore their health conditions or tackle them independently before seeking medical help. At the same time, they were impacted on by social and cultural factors. Policies are required that offer more resources to community-dwelling people with disabilities in China. © 2017 John Wiley & Sons Australia, Ltd.

  10. Experiences of Patients Living With Heart Failure: A Descriptive Qualitative Study.

    PubMed

    Seah, Alvin Chuen Wei; Tan, Khoon Kiat; Huang Gan, Juvena Chew; Wang, Wenru

    2016-07-01

    The purpose of this study was to explore the experiences, needs, and coping strategies of patients living with heart failure in Singapore. A descriptive qualitative design was used. A purposive sample of 15 informants was recruited from two cardiology wards of a tertiary public hospital in Singapore. Individual face-to-face interviews were conducted with a semistructured interview guideline that was developed based on a review of the literature and a pilot study. Content analysis was adopted to analyze the data, and four main categories were identified: perceived causes, manifestations, and prognosis; enduring emotions; managing the condition; and needs from health care professionals. The informants were overwhelmed with the experience of living with heart failure due to the disruptive and uncertain nature of the condition. This study offers health care professionals practical and useful suggestions when providing holistic care for patients with heart failure. © The Author(s) 2015.

  11. Quantitative monitoring of Arabidopsis thaliana growth and development using high-throughput plant phenotyping.

    PubMed

    Arend, Daniel; Lange, Matthias; Pape, Jean-Michel; Weigelt-Fischer, Kathleen; Arana-Ceballos, Fernando; Mücke, Ingo; Klukas, Christian; Altmann, Thomas; Scholz, Uwe; Junker, Astrid

    2016-08-16

    With the implementation of novel automated, high throughput methods and facilities in the last years, plant phenomics has developed into a highly interdisciplinary research domain integrating biology, engineering and bioinformatics. Here we present a dataset of a non-invasive high throughput plant phenotyping experiment, which uses image- and image analysis- based approaches to monitor the growth and development of 484 Arabidopsis thaliana plants (thale cress). The result is a comprehensive dataset of images and extracted phenotypical features. Such datasets require detailed documentation, standardized description of experimental metadata as well as sustainable data storage and publication in order to ensure the reproducibility of experiments, data reuse and comparability among the scientific community. Therefore the here presented dataset has been annotated using the standardized ISA-Tab format and considering the recently published recommendations for the semantical description of plant phenotyping experiments.

  12. Learning in the informal spaces and re-signification of the existence of undergraduate students of nursing

    PubMed Central

    de Jesus, Isabel Silva; Sena, Edite Lago da Silva; Andrade, Luana Machado

    2014-01-01

    OBJECTIVE: to describe the perception of lecturers and undergraduate nursing students regarding the dialogic experience in the informal spaces and its relationship with training in health. METHOD: experiential descriptions were collected in the context of a public university in the non-metropolitan region of the state of Bahia, Brazil, using open interviews. These descriptions were analyzed according to the principles of the phenomenology of Maurice Merleau-Ponty. RESULTS: it was revealed that the informal spaces contribute significantly to the construction of knowledge and professional training strengthening teaching and promoting the re-signification of the subjects' experience. CONCLUSION: it is evidenced that the dialogic experience has relevancy for rethinking the teaching-learning process in the university, such that the informal spaces should be included and valued as producers of meanings for the personal and academic life of lecturers and students, with the ability to re-signify existence. PMID:25493667

  13. "Mean mugging": an exploration of young Aboriginal women's experiences of bullying in team sports.

    PubMed

    Kentel, Jennifer L; McHugh, Tara-Leigh F

    2015-08-01

    Bullying among youth is rampant and research suggests that young Aboriginal women may be particularly susceptible to bullying. Sport participation has been identified as a possible mechanism to prevent bullying behaviors, yet few researchers have explored bullying within the context of sport. The purpose of this qualitative description study was to explore young Aboriginal women's experiences of bullying in team sports. Eight young Aboriginal women participated in one-on-one semistructured interviews and follow-up phone interviews. Data were analyzed using a content analysis, and findings were represented by five themes: (1) mean mugging, (2) sport specific, (3) happens all the time, (4) team bonding to address bullying, and (5) prevention through active coaches. The detailed descriptions shared by participants provide insight into a broad range of bullying experiences and serve as a foundation for addressing the bullying that occurs in sport.

  14. SED-ED, a workflow editor for computational biology experiments written in SED-ML.

    PubMed

    Adams, Richard R

    2012-04-15

    The simulation experiment description markup language (SED-ML) is a new community data standard to encode computational biology experiments in a computer-readable XML format. Its widespread adoption will require the development of software support to work with SED-ML files. Here, we describe a software tool, SED-ED, to view, edit, validate and annotate SED-ML documents while shielding end-users from the underlying XML representation. SED-ED supports modellers who wish to create, understand and further develop a simulation description provided in SED-ML format. SED-ED is available as a standalone Java application, as an Eclipse plug-in and as an SBSI (www.sbsi.ed.ac.uk) plug-in, all under an MIT open-source license. Source code is at https://sed-ed-sedmleditor.googlecode.com/svn. The application itself is available from https://sourceforge.net/projects/jlibsedml/files/SED-ED/.

  15. Smoking cessation in women: findings from qualitative research.

    PubMed

    Puskar, M

    1995-11-01

    The purpose of this descriptive exploratory study is to describe the experience of successful smoking cessation in adult women. The convenience sample included 10 women, ages 25 to 42, who had abstained from smoking for at least 6 months but not longer than 3 years. A semistructured interview format was used to elicit descriptions of the experience of successful smoking cessation from these subjects. The interview format explored the experience, including initial contemplation, the process of quitting, and maintenance of smoking abstinence. Interviews were audiotaped, transcribed, and then analyzed using methods outlined by Miles and Huberman [1]. Four themes emerged from the data: evolving commitment to health and personal growth, being stigmatized, changing conceptualization of smoking, and smoking cessation as a relational phenomenon. These findings were consistent with Pender's Health Promotion Model and have implications for nurse practitioners who counsel women on smoking cessation.

  16. The architect's perspective on the tour and map perspective.

    PubMed

    Papadopoulou, Athina

    2015-09-01

    Literature in linguistics suggests that when people are asked to provide an oral spatial description, they usually provide a body-centered narrative; they adopt a Tour Perspective, that is, an imaginary tour of the space rather than a Map Perspective, that is, a description focused on spatial relations as seen from above (Linde and Labov in Language 51(1):924-939, 1975; Howald in Discursive constraints on space in narrative: evidence from guilty plea discourse, eVox 3, 2009). I conducted a pilot experiment to address the following questions: Does the formal knowledge of architects--their familiarity with plan drawings and maps--override the tendency to adopt the tour perspective? Does the tour perspective depend on the actual experience of space? Twenty-two graduate students in architecture were asked to respond to the following questions: (1) "Can you describe the layout of your apartment?" (2) "Can you describe the layout of an ideal apartment?" In the responses to the first question most participants used the tour perspective. In the responses to the second question most participants used the map perspective. The results provide evidence that architects' formal knowledge does not override the preference of the tour perspective in descriptions of experienced space. Moreover, that the tour perspective is associated with the actual experience of space.

  17. Apollo experience report: Earth landing system

    NASA Technical Reports Server (NTRS)

    West, R. B.

    1973-01-01

    A brief discussion of the development of the Apollo earth landing system and a functional description of the system are presented in this report. The more significant problems that were encountered during the program, the solutions, and, in general, the knowledge that was gained are discussed in detail. Two appendixes presenting a detailed description of the various system components and a summary of the development and the qualification test programs are included.

  18. Disadvantaged Children and Their First School Experiences: ETS-Head Start Longitudinal Study: Structure and Development of Cognitive Competencies and Styles Prior to School Entry.

    ERIC Educational Resources Information Center

    Shipman, Virginia C.; And Others

    In a continuing description of a Head Start longitudinal study, analyses are presented of the interrelationships among individual measures of the child's performances prior to school entry, accompanied by brief descriptions of the tasks and the scores used. Despite the size and extensiveness of the data base, the findings are considered tentative…

  19. An Alternative to the Stay/Switch Equation Assessed When Using a Changeover-Delay

    PubMed Central

    MacDonall, James S.

    2015-01-01

    An alternative to the generalized matching equation for understanding concurrent performances is the stay/switch model. For the stay/switch model, the important events are the contingencies and behaviors at each alternative. The current experiment compares the descriptions by two stay/switch equations, the original, empirically derived stay/switch equation and a more theoretically derived equation based on ratios of stay to switch responses matching ratios of stay to switch reinforcers. The present experiment compared descriptions by the original stay/switch equation when using and not using a changeover delay. It also compared descriptions by the more theoretical equation with and without a changeover delay. Finally, it compared descriptions of the concurrent performances by these two equations. Rats were trained in 15 conditions on identical concurrent random-interval schedules in each component of a multiple schedule. A COD operated in only one component. There were no consistent differences in the variance accounted for by each equation of concurrent performances whether or not a COD was used. The simpler equation found greater sensitivity to stay than to switch reinforcers. It also found a COD eliminated the influence of switch reinforcers. Because estimates of parameters were more meaningful when using the more theoretical stay/switch equation it is preferred. PMID:26299548

  20. An alternative to the stay/switch equation assessed when using a changeover-delay.

    PubMed

    MacDonall, James S

    2015-11-01

    An alternative to the generalized matching equation for understanding concurrent performances is the stay/switch model. For the stay/switch model, the important events are the contingencies and behaviors at each alternative. The current experiment compares the descriptions by two stay/switch equations, the original, empirically derived stay/switch equation and a more theoretically derived equation based on ratios of stay to switch responses matching ratios of stay to switch reinforcers. The present experiment compared descriptions by the original stay/switch equation when using and not using a changeover delay. It also compared descriptions by the more theoretical equation with and without a changeover delay. Finally, it compared descriptions of the concurrent performances by these two equations. Rats were trained in 15 conditions on identical concurrent random-interval schedules in each component of a multiple schedule. A COD operated in only one component. There were no consistent differences in the variance accounted for by each equation of concurrent performances whether or not a COD was used. The simpler equation found greater sensitivity to stay than to switch reinforcers. It also found a COD eliminated the influence of switch reinforcers. Because estimates of parameters were more meaningful when using the more theoretical stay/switch equation it is preferred. Copyright © 2015 Elsevier B.V. All rights reserved.

  1. The study design elements employed by researchers in preclinical animal experiments from two research domains and implications for automation of systematic reviews.

    PubMed

    O'Connor, Annette M; Totton, Sarah C; Cullen, Jonah N; Ramezani, Mahmood; Kalivarapu, Vijay; Yuan, Chaohui; Gilbert, Stephen B

    2018-01-01

    Systematic reviews are increasingly using data from preclinical animal experiments in evidence networks. Further, there are ever-increasing efforts to automate aspects of the systematic review process. When assessing systematic bias and unit-of-analysis errors in preclinical experiments, it is critical to understand the study design elements employed by investigators. Such information can also inform prioritization of automation efforts that allow the identification of the most common issues. The aim of this study was to identify the design elements used by investigators in preclinical research in order to inform unique aspects of assessment of bias and error in preclinical research. Using 100 preclinical experiments each related to brain trauma and toxicology, we assessed design elements described by the investigators. We evaluated Methods and Materials sections of reports for descriptions of the following design elements: 1) use of comparison group, 2) unit of allocation of the interventions to study units, 3) arrangement of factors, 4) method of factor allocation to study units, 5) concealment of the factors during allocation and outcome assessment, 6) independence of study units, and 7) nature of factors. Many investigators reported using design elements that suggested the potential for unit-of-analysis errors, i.e., descriptions of repeated measurements of the outcome (94/200) and descriptions of potential for pseudo-replication (99/200). Use of complex factor arrangements was common, with 112 experiments using some form of factorial design (complete, incomplete or split-plot-like). In the toxicology dataset, 20 of the 100 experiments appeared to use a split-plot-like design, although no investigators used this term. The common use of repeated measures and factorial designs means understanding bias and error in preclinical experimental design might require greater expertise than simple parallel designs. Similarly, use of complex factor arrangements creates novel challenges for accurate automation of data extraction and bias and error assessment in preclinical experiments.

  2. Evidence in Support of the Independent Channel Model Describing the Sensorimotor Control of Human Stance Using a Humanoid Robot

    PubMed Central

    Pasma, Jantsje H.; Assländer, Lorenz; van Kordelaar, Joost; de Kam, Digna; Mergner, Thomas; Schouten, Alfred C.

    2018-01-01

    The Independent Channel (IC) model is a commonly used linear balance control model in the frequency domain to analyze human balance control using system identification and parameter estimation. The IC model is a rudimentary and noise-free description of balance behavior in the frequency domain, where a stable model representation is not guaranteed. In this study, we conducted firstly time-domain simulations with added noise, and secondly robot experiments by implementing the IC model in a real-world robot (PostuRob II) to test the validity and stability of the model in the time domain and for real world situations. Balance behavior of seven healthy participants was measured during upright stance by applying pseudorandom continuous support surface rotations. System identification and parameter estimation were used to describe the balance behavior with the IC model in the frequency domain. The IC model with the estimated parameters from human experiments was implemented in Simulink for computer simulations including noise in the time domain and robot experiments using the humanoid robot PostuRob II. Again, system identification and parameter estimation were used to describe the simulated balance behavior. Time series, Frequency Response Functions, and estimated parameters from human experiments, computer simulations, and robot experiments were compared with each other. The computer simulations showed similar balance behavior and estimated control parameters compared to the human experiments, in the time and frequency domain. Also, the IC model was able to control the humanoid robot by keeping it upright, but showed small differences compared to the human experiments in the time and frequency domain, especially at high frequencies. We conclude that the IC model, a descriptive model in the frequency domain, can imitate human balance behavior also in the time domain, both in computer simulations with added noise and real world situations with a humanoid robot. This provides further evidence that the IC model is a valid description of human balance control. PMID:29615886

  3. Evidence in Support of the Independent Channel Model Describing the Sensorimotor Control of Human Stance Using a Humanoid Robot.

    PubMed

    Pasma, Jantsje H; Assländer, Lorenz; van Kordelaar, Joost; de Kam, Digna; Mergner, Thomas; Schouten, Alfred C

    2018-01-01

    The Independent Channel (IC) model is a commonly used linear balance control model in the frequency domain to analyze human balance control using system identification and parameter estimation. The IC model is a rudimentary and noise-free description of balance behavior in the frequency domain, where a stable model representation is not guaranteed. In this study, we conducted firstly time-domain simulations with added noise, and secondly robot experiments by implementing the IC model in a real-world robot (PostuRob II) to test the validity and stability of the model in the time domain and for real world situations. Balance behavior of seven healthy participants was measured during upright stance by applying pseudorandom continuous support surface rotations. System identification and parameter estimation were used to describe the balance behavior with the IC model in the frequency domain. The IC model with the estimated parameters from human experiments was implemented in Simulink for computer simulations including noise in the time domain and robot experiments using the humanoid robot PostuRob II. Again, system identification and parameter estimation were used to describe the simulated balance behavior. Time series, Frequency Response Functions, and estimated parameters from human experiments, computer simulations, and robot experiments were compared with each other. The computer simulations showed similar balance behavior and estimated control parameters compared to the human experiments, in the time and frequency domain. Also, the IC model was able to control the humanoid robot by keeping it upright, but showed small differences compared to the human experiments in the time and frequency domain, especially at high frequencies. We conclude that the IC model, a descriptive model in the frequency domain, can imitate human balance behavior also in the time domain, both in computer simulations with added noise and real world situations with a humanoid robot. This provides further evidence that the IC model is a valid description of human balance control.

  4. Experiment Needs and Facilities Study Appendix A Transient Reactor Test Facility (TREAT) Upgrade

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    None

    The TREAT Upgrade effort is designed to provide significant new capabilities to satisfy experiment requirements associated with key LMFBR Safety Issues. The upgrade consists of reactor-core modifications to supply the physics performance needed for the new experiments, an Advanced TREAT loop with size and thermal-hydraulics capabilities needed for the experiments, associated interface equipment for loop operations and handling, and facility modifications necessary to accommodate operations with the Loop. The costs and schedules of the tasks to be accomplished under the TREAT Upgrade project are summarized. Cost, including contingency, is about 10 million dollars (1976 dollars). A schedule for execution ofmore » 36 months has been established to provide the new capabilities in order to provide timely support of the LMFBR national effort. A key requirement for the facility modifications is that the reactor availability will not be interrupted for more than 12 weeks during the upgrade. The Advanced TREAT loop is the prototype for the STF small-bundle package loop. Modified TREAT fuel elements contain segments of graphite-matrix fuel with graded uranium loadings similar to those of STF. In addition, the TREAT upgrade provides for use of STF-like stainless steel-UO{sub 2} TREAT fuel for tests of fully enriched fuel bundles. This report will introduce the Upgrade study by presenting a brief description of the scope, performance capability, safety considerations, cost schedule, and development requirements. This work is followed by a "Design Description". Because greatly upgraded loop performance is central to the upgrade, a description is given of Advanced TREAT loop requirements prior to description of the loop concept. Performance requirements of the upgraded reactor system are given. An extensive discussion of the reactor physics calculations performed for the Upgrade concept study is provided. Adequate physics performance is essential for performance of experiments with the Advanced TREAT loop, and the stress placed on these calculations reflects this. Additional material on performance and safety is provided. Backup calculations on calculations of plutonium-release limits are described. Cost and schedule information for the Upgrade are presented.« less

  5. Teachers' Experiences with and Expectations of Children with Incarcerated Parents

    ERIC Educational Resources Information Center

    Dallaire, Danielle H.; Ciccone, Anne; Wilson, Laura C.

    2010-01-01

    Children with incarcerated parents, and mothers in particular, are at increased risk for academic failure and school dropout. In two studies, we examined teachers' experiences with children with incarcerated parents and their expectations for competence of children with incarcerated mothers. In Study 1, a descriptive, qualitative study, teachers…

  6. Using Private Employment Agencies to Place Public Assistance Clients in Jobs.

    ERIC Educational Resources Information Center

    Carcagno, George J.; And Others

    1982-01-01

    This paper presents the results of an experiment in which private employment agencies were used to place public assistance clients in jobs. Contains brief descriptions of the experiment and the AFDC clients who participated in it. Key experimental findings are outlined and policy implications are discussed. (CT)

  7. Holistic Assessment and the Study Abroad Experience

    ERIC Educational Resources Information Center

    Doyle, Dennis

    2009-01-01

    While many educators who work closely with study abroad programs could conjure up a litany of testimonials about the dramatic impact of study abroad, it is often difficult to move beyond vaguely descriptive accounts to reliable data showing how this experience influenced a student's growth in intercultural sensitivity and awareness. King and…

  8. Evaluating the Relationship of Computer Literacy Training Competence and Nursing Experience to CPIS Resistance

    ERIC Educational Resources Information Center

    Reese, Dorothy J.

    2012-01-01

    The purpose of this quantitative, descriptive/correlational project was to examine the relationship between the level of computer literacy, informatics training, nursing experience, and perceived competence in using computerized patient information systems (CPIS) and nursing resistance to using CPIS. The Nurse Computerized Patient Information…

  9. Writing with Parents in Response to Picture Book Read Alouds

    ERIC Educational Resources Information Center

    DeFauw, Danielle L.

    2017-01-01

    High-quality writing instruction needs to permeate elementary students' in- and outside-of-school experiences. The aim of this research was to explore how teaching writing to parents may support home-school literacy connections. This qualitative case study explored parents' experiences in interactive writing sessions. The descriptive coding and…

  10. Filtrates & Residues: Hemoglobinometry--A Biochemistry Experiment that Utilizes the Principles of Transition Metal Chemistry.

    ERIC Educational Resources Information Center

    Giuliano, Vincenzo; Rieck, John Paul

    1987-01-01

    Describes a chemistry experiment dealing with hemoglobinometry that can apply to transition metal chemistry, colorimetry, and biochemistry. Provides a detailed description of the experimental procedure, including discussions of the preparation of the cyanide reagent, colorimetric measurements, and waste disposal and treatment. (TW)

  11. MUVEs and Experiential Learning: Some Examples

    ERIC Educational Resources Information Center

    Weusijana, Baba Kofi; Svihla, Vanessa; Gawel, Drue; Bransford, John

    2009-01-01

    Multiuser virtual environments (MUVEs) like Second Life present unparalleled opportunities to help students connect knowledge by description to knowledge by experience; in a MUVE, students can experience phenomena rather than only reading about them. Baba Kofi Weusijana, Vanessa Svihla, Drue Gawel, and John Bransford describe their use of a maze…

  12. MODELING HEXAVALENT CHROMIUM REDUCTION IN GROUND- WATER IN FIELD-SCALE TRANSPORT AND LABORATORY BATCH EXPERIMENTS

    EPA Science Inventory

    A plausible and consistent model is developed to obtain a quantitative description of the gradual disappearance of hexavalent chromium (Cr(VI)) from groundwater in a small-scale field tracer test and in batch kinetic experiments using aquifer sediments under similar chemical cond...

  13. Committed Seventh-Day Adventist Students at Secular Institutions of Higher Education

    ERIC Educational Resources Information Center

    Anthony, LaShonda R.

    2013-01-01

    The experiences of Seventh-day Adventist students at secular universities was examined. Seven women and two men attending universities in Michigan and New York were interviewed. The researcher employed a heuristically guided phenomenological method to get rich descriptions of the participants' experiences in the secular university setting.…

  14. Volta and Galvani: New Electricity from Old. Experiment No. 22.

    ERIC Educational Resources Information Center

    Devons, Samuel

    Presented is a descriptive account of Alessandro Volta's first notable success in 1775, the invention of a unique method of generating electricity. Luigi Galvani's announcement of his theory of "animal electricity" in 1972 is integrated into this interpretation of Volta's discoveries with electricity. Five experiments are described: (1)…

  15. Reducing the Impact of Stereotypical Knowledge during Reading

    ERIC Educational Resources Information Center

    Lassonde, Karla A.

    2015-01-01

    Four experiments were designed to assess the presence and impact of stereotypical knowledge through an implicit measure of reading comprehension. In Experiments 1 and 3, participants read passages about protagonists in scenarios in which stereotypical knowledge was likely to become activated in memory. Following the descriptions, reading times for…

  16. The Scope and Design of Structured Group Learning Experiences at Community Colleges

    ERIC Educational Resources Information Center

    Hatch, Deryl K.; Bohlig, E. Michael

    2015-01-01

    This study explores through descriptive analysis the similarities of structured group learning experiences such as first-year seminars, learning communities, orientation, success courses, and accelerated developmental education programs, in terms of their design features and implementation at community colleges. The study takes as its conceptual…

  17. Thought Experiments in Teaching Free-Fall Weightlessness: A Critical Review and an Exploration of Mercury's Behavior in "Falling Elevator"

    ERIC Educational Resources Information Center

    Balukovic, Jasmina; Slisko, Josip; Cruz, Adrián Corona

    2017-01-01

    Different "thought experiments" dominate teaching approaches to weightlessness, reducing students' opportunities for active physics learning, which should include observations, descriptions, explanations and predictions of real phenomena. Besides the controversy related to conceptual definitions of weight and weightlessness, we report…

  18. Male Teachers' Experiences of Own Aggression

    ERIC Educational Resources Information Center

    Botha, Johan; Myburgh, Chris; Poggenpoel, Marie

    2013-01-01

    We describe an exploratory, descriptive, and contextual study on the lived experiences of 17 male teachers' own aggression in the Gert Sibande district in Mpumalanga province. Individual phenomenological interviews were used to collect data from these volunteers for this qualitative research. The data were analysed by means of an open coding…

  19. An Experiment on the Dispersion of Light

    ERIC Educational Resources Information Center

    Thompson, Frank

    2012-01-01

    A simplified theoretical explanation of dispersion in dielectric materials has been given and experiments have been carried out on two liquids, namely, distilled water and sunflower oil. The appendix contains a detailed description of the construction of a homemade spectrometer and hollow prism and an assessment of its suitability for the above…

  20. U.S.-Born Salvadoran American Women with Learning Disabilities in Transition to Adulthood

    ERIC Educational Resources Information Center

    Ortiz, Deanna M.

    2010-01-01

    This exploratory and descriptive qualitative interview study examined the postsecondary experiences of three Salvadoran-American women with learning disabilities (LD) living in the District of Columbia in the 3 years since graduating from high school. This research analyzed the young women's experiences in employment, education, community…

  1. Energetic particles flux experiment for ISEE mother/daughter spacecraft

    NASA Technical Reports Server (NTRS)

    Anderson, K. A.

    1981-01-01

    The history of the energetic particle experiments on the International Sun Earth Explorer 1 and 2 spacecraft is outlined, and descriptions of the instruments are given. The inflight performance and data analysis are summarized. The research is completed and ongoing are described and a bibliography is included.

  2. How Nurses Experience Their Work as a Learning Environment

    ERIC Educational Resources Information Center

    Skår, Randi

    2010-01-01

    This article explores and illuminates the meaning of nurses' experiences with their work as a learning environment. A qualitative hermeneutic approach guided the research process and the analysis and interpretation of the transcribed interview-texts of eleven graduate nurses. Three core themes emerged from these informants' descriptions of their…

  3. Visual Design as a Holistic Experience: How Students Engage with Instructional Materials of Various Visual Designs

    ERIC Educational Resources Information Center

    Tomita, Kei

    2017-01-01

    This study explored factors thought to affect college students' selection and experience of instructional materials by utilizing general procedures of Giorgi's (2012) descriptive phenomenological psychological method and Spradley's (1979) approach to interpretation. Twenty-five undergraduate students were asked to study finite mathematics…

  4. Indigenous Research: Three Researchers Reflect on Their Experiences at the Interface

    ERIC Educational Resources Information Center

    Minniecon, Deanne; Franks, Naomi; Heffernan, Maree

    2007-01-01

    Utilising Nakata's (2007) description of the "cultural interface", two Indigenous researchers and one non-Indigenous researcher examine their development of Indigenous research in and with Aboriginal and Torres Strait Islander communities conducted from within an institution of higher education. The authors reflect on their experiences in…

  5. FABS (Formulated Abstracting): An Experiment in Regularized Content Description.

    ERIC Educational Resources Information Center

    Harris, Brian; Hofmann, Thomas R.

    This preliminary report of research conducted at the Linguistics Documentation Centre of the University of Ottawa describes a bilingual experiment into the elaboration of well structured formulary routines for making the writing of abstracts easier, and at the same time standardizing and generally augmenting the information given in them. The…

  6. Technical assessment of PSSC-supported experiments and demonstrations

    NASA Technical Reports Server (NTRS)

    1978-01-01

    A description of CTS and ATS short-term and long-term satellite demonstration supported through usage of a satellite communication ground station complex is presented. User assessments about the programmatic impact of their demonstrations and experiments were summarized. The technical planning and coordination process involved in satellite utilization is also presented.

  7. Supervised Agricultural Experience Instruction in Agricultural Teacher Education Programs: A National Descriptive Study

    ERIC Educational Resources Information Center

    Rank, Bryan D.; Retallick, Michael S.

    2017-01-01

    Faculty in agricultural teacher education programs are responsible for preparing future teachers to lead effective school-based agricultural education programs. However, agriculture teachers are having difficulty implementing supervised agricultural experience (SAE), even though they value it conceptually as a program component. In an effort to…

  8. Adolescent Developmental Experiences and Participation in Extracurricular Activities in Saudi Arabia

    ERIC Educational Resources Information Center

    Alfnifie, Shuaa

    2012-01-01

    This study examined adolescent developmental experiences and participation in extracurricular activities. Providing youth with multiple channels to nurture their development and acknowledge their interests and strengths can play a significant role in their holistic growth. This is a descriptive study of a mixed-methods design (quantitative and…

  9. Beginning Teachers Reflect on Their Experiences Being Prepared to Teach Literacy

    ERIC Educational Resources Information Center

    Helfrich, Sara R.; Bean, Rita M.

    2011-01-01

    A descriptive study was employed to investigate beginning teachers' experiences with reading instruction in their teacher preparation programs and to determine what areas of need have emerged now that they are practicing teachers. Data collection instruments included a reflective survey and telephone interviews. Beginning teachers perceived…

  10. School Leader Succession: A Description of Transitional Experiences

    ERIC Educational Resources Information Center

    Zimmerman, Judith A.

    2007-01-01

    This qualitative case study describes the transitional experiences (first 4 1/2 months) of four school leaders. The "life cycle" of leaders is often short, necessitating job changes with resulting transitions, when new leaders must simultaneously learn their positions and make changes to improve schools. Using previous leadership…

  11. Counterfactual Thinking as a Mechanism in Narrative Persuasion

    ERIC Educational Resources Information Center

    Tal-Or, Nurit; Boninger, David S.; Poran, Amir; Gleicher, Faith

    2004-01-01

    Two experiments examined the impact of counterfactual thinking on persuasion. Participants in both experiments were exposed to short video clips in which an actor described a car accident that resulted in serious injury. In the narrative description, the salience of a counterfactual was manipulated by either explicitly including the counterfactual…

  12. Developing Effective Extension Agents: Experience Concerns.

    ERIC Educational Resources Information Center

    Goddu, Roland

    This paper is a description of the requirements placed on persons selected to fill the role of extension agents for the purpose of penetrating an educational environment, installing change in an educational organization, and completing tasks as a resource outside of the education establishment. These experience concerns are summarized by…

  13. Determination of Particle Size by Diffraction of Light

    ERIC Educational Resources Information Center

    Rinard, Phillip M.

    1974-01-01

    Describes a simplified diffraction experiment offered in a workshop with the purpose of illustrating to high school students the relation of science to society. The radii determined for cigarette smoke particles range from 0.2 to 0.5 micrometer in this experiment. Included is a description of the diffraction theory. (CC)

  14. 76 FR 31356 - Notice of Proposed Information Collection for Public Comment; Technical Assistance Experience...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-31

    ... Matrices AGENCY: Office of the Community Planning and Development. ACTION: Notice of proposed information..., Expertise, and Awards Received Matrices. Description of the need for the information proposed: The Technical Assistance Experience, Expertise, and Awards Received Matrices will allow the Office of Special Needs...

  15. Caring for a critically ill Amish newborn.

    PubMed

    Gibson, Elizabeth A

    2008-10-01

    This article describes a neonatal nurse's personal experience in working with a critically ill newborn and his Amish family in a newborn intensive care unit in Montana. The description includes a cultural experience with an Amish family with application to Madeleine Leininger's theory of culture care diversity and universality.

  16. Effects of perceived descriptive norms on corrupt intention: The mediating role of moral disengagement.

    PubMed

    Zhao, Huanhuan; Zhang, Heyun; Xu, Yan

    2017-01-31

    The present study attempts to examine the effect of perceived descriptive norms on corrupt intention (e.g., bribe-taking intention) and then further explore the psychological mechanism underlying this effect. Based on social cognitive theory, we established a mediation model in which moral disengagement partially mediated the link between perceived descriptive norms and corrupt intention. In Study 1, participants (N = 690) completed a series of questionnaires, and the results demonstrated that, while perceived descriptive norms were positively associated with corrupt intention, it was partially mediated by moral disengagement. In Study 2, we conducted a priming experiment (N = 161) to test the causal relationship and psychological mechanism between perceived descriptive norms and corrupt intention. The results revealed that perceived descriptive norms triggered the propensity of individuals to morally disengage, which in turn, partially increased their corrupt intention. This study not only extends previous research by providing evidence that moral disengagement may be one of the reasons why perceived descriptive norms facilitate corrupt intention, but also suggests that reshaping normative beliefs and preventing the moral disengagement of individuals may be the effective ways to curb corrupt behaviours. © 2017 International Union of Psychological Science.

  17. Progress in Machine Learning Studies for the CMS Computing Infrastructure

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Bonacorsi, Daniele; Kuznetsov, Valentin; Magini, Nicolo

    Here, computing systems for LHC experiments developed together with Grids worldwide. While a complete description of the original Grid-based infrastructure and services for LHC experiments and its recent evolutions can be found elsewhere, it is worth to mention here the scale of the computing resources needed to fulfill the needs of LHC experiments in Run-1 and Run-2 so far.

  18. To Be Alone or in a Group: An Exploration into How the School-Based Experiences Differ for Black Male Teachers across One Urban School District

    ERIC Educational Resources Information Center

    Bristol, Travis J.

    2018-01-01

    One urban district administered the Black Male Teacher Environment Survey (BMTES) to each of its Black male teachers to measure their school-based experiences. This article highlights descriptive statistics from the 86 Black male teacher respondents. Findings suggest that participants' background characteristics and school-based experiences varied…

  19. Progress in Machine Learning Studies for the CMS Computing Infrastructure

    DOE PAGES

    Bonacorsi, Daniele; Kuznetsov, Valentin; Magini, Nicolo; ...

    2017-12-06

    Here, computing systems for LHC experiments developed together with Grids worldwide. While a complete description of the original Grid-based infrastructure and services for LHC experiments and its recent evolutions can be found elsewhere, it is worth to mention here the scale of the computing resources needed to fulfill the needs of LHC experiments in Run-1 and Run-2 so far.

  20. Emotions while awaiting lung transplantation: A comprehensive qualitative analysis

    PubMed Central

    Brügger, Aurelia; Aubert, John-David

    2014-01-01

    Patients awaiting lung transplantation are at risk of negative emotional and physical experiences. How do they talk about emotions? Semi-structured interviews were performed (15 patients). Categorical analysis focusing on emotion-related descriptions was organized into positive–negative–neutral descriptions: for primary and secondary emotions, evaluation processes, coping strategies, personal characteristics, emotion descriptions associated with physical states, (and) contexts were listed. Patients develop different strategies to maintain positive identity and attitude, while preserving significant others from extra emotional load. Results are discussed within various theoretical and research backgrounds, in emphasizing their importance in the definition of emotional support starting from the patient’s perspective. PMID:28070345

  1. Functional test generation for digital circuits described with a declarative language: LUSTRE

    NASA Astrophysics Data System (ADS)

    Almahrous, Mazen

    1990-08-01

    A functional approach to the test generation problem starting from a high level description is proposed. The circuit tested is modeled, using the LUSTRE high level data flow description language. The different LUSTRE primitives are translated to a SATAN format graph in order to evaluate the testability of the circuit and to generate test sequences. Another method of testing the complex circuits comprising an operative part and a control part is defined. It consists of checking experiments for the control part observed through the operative part. It was applied to the automata generated from a LUSTRE description of the circuit.

  2. Encyclopedia: Satellites and Sounding Rockets, August 1959 - December 1969

    NASA Technical Reports Server (NTRS)

    1970-01-01

    Major space missions utilizing satellites or sounding rockets managed by the NASA Goddard Space Flight Center between August 1959 and December 1969 were documented. The information was presented in the following form: (1) description of each satellite project where Goddard was responsible for the spacecraft or the successful launch or both, with data such as launch characteristics, objectives, etc.; (2) description of each Goddard sounding rocket project, with the following data: sounding rocket type, vehicle number, experimental affiliation, and type of experiment; (3) brief description of current sounding rockets and launch vehicles; (4) table of tracking and data acquisition stations. Summary tables are also provided.

  3. Emotions while awaiting lung transplantation: A comprehensive qualitative analysis.

    PubMed

    Brügger, Aurelia; Aubert, John-David; Piot-Ziegler, Chantal

    2014-07-01

    Patients awaiting lung transplantation are at risk of negative emotional and physical experiences. How do they talk about emotions? Semi-structured interviews were performed (15 patients). Categorical analysis focusing on emotion-related descriptions was organized into positive-negative-neutral descriptions: for primary and secondary emotions, evaluation processes, coping strategies, personal characteristics, emotion descriptions associated with physical states, (and) contexts were listed. Patients develop different strategies to maintain positive identity and attitude, while preserving significant others from extra emotional load. Results are discussed within various theoretical and research backgrounds, in emphasizing their importance in the definition of emotional support starting from the patient's perspective.

  4. Semantic closure demonstrated by the evolution of a universal constructor architecture in an artificial chemistry.

    PubMed

    Clark, Edward B; Hickinbotham, Simon J; Stepney, Susan

    2017-05-01

    We present a novel stringmol-based artificial chemistry system modelled on the universal constructor architecture (UCA) first explored by von Neumann. In a UCA, machines interact with an abstract description of themselves to replicate by copying the abstract description and constructing the machines that the abstract description encodes. DNA-based replication follows this architecture, with DNA being the abstract description, the polymerase being the copier, and the ribosome being the principal machine in expressing what is encoded on the DNA. This architecture is semantically closed as the machine that defines what the abstract description means is itself encoded on that abstract description. We present a series of experiments with the stringmol UCA that show the evolution of the meaning of genomic material, allowing the concept of semantic closure and transitions between semantically closed states to be elucidated in the light of concrete examples. We present results where, for the first time in an in silico system, simultaneous evolution of the genomic material, copier and constructor of a UCA, giving rise to viable offspring. © 2017 The Author(s).

  5. A Systematic Study of SED Fitting Techniques for Exploring Galaxy Growth at z ~ 2 - 4 Over a Colossal Comoving Volume

    NASA Astrophysics Data System (ADS)

    Sherman, Sydney; Jogee, Shardha; Florez, Jonathan; Stevans, Matthew L.; Kawinwanichakij, Lalitwadee; Finkelstein, Steven L.; Papovich, Casey J.; Ciardullo, Robin; Gronwall, Caryl

    2017-06-01

    We are currently conducting an unprecedented study of how nearly 0.6 million massive galaxies (Mstar > 1010 M⊙) grow their stars and dark matter halos over an enormous comoving volume (0.45 Gpc3) of the 1.9 < z < 3.5 universe, when cosmic star formation and black hole activity peak, and proto-clusters begin to collapse. This 24 deg2 study of the SDSS Stripe 82 field utilizes the powerful combination of five photometric surveys (DECam ugriz, NEWFIRM K-band, Spitzer-IRAC, Herschel-SPIRE, and Stripe 82X X-ray), along with future blind optical spectroscopy from the HETDEX project. Central to this study, and other large-area surveys like it, is the dependence on photometric redshifts and spectral energy distribution (SED) fitting to constrain the lookback time and properties of observed galaxies. Unfortunately, these methods are primarily based on galaxies in the local universe and often introduce large uncertainties when applied to high redshift systems. In this poster, we perform systematic tests of the photometric redshift code EAZY (Brammer et al. 2008), and SED fitting codes FAST (Kriek et al. 2009) and MAGPHYS (Da Cunha et al. 2008). We fine-tune input model choices to SED fitting codes (such as SSP, magnitude prior, SFH, IMF, and dust law) using 2 < z < 4 galaxies from theoretical cosmological simulations, with the goal of better constraining the uncertainty based on model choices. The results of this test are then used to inform the choice of input models used when constraining the properties of galaxies observed in our multi-wavelength study. In the era of large-area photometric surveys with little to no spectroscopic coverage, this work has broad implications for the characterization of galaxies at early cosmic times. We gratefully acknowledge support from NSF grants AST-1614798 and AST-1413652.

  6. Apertif: A new phased-array feed for WSRT

    NASA Astrophysics Data System (ADS)

    Adams, Elizabeth; Adebahr, Björn; de Blok, Willem J. G.; Hess, Kelley M.; Lucero, Danielle M.; Maccagni, Filippo; Morganti, Raffaella; Oosterloo, Tom A.; Ponomareva, Anastasia; Staveley-Smith, Lister; van der Hulst, J. M.; Verheijen, Marc A. W.; Verstappen, Joris

    2018-01-01

    Apertif is a phased-array feed for the Westerbork Synthesis Radio Telescope (WSRT), increasing the field of view of the telescope by a factor of twenty-five to 6.8 square degrees. In 2018, three legacy surveys will commence: a shallow imaging survey, a medium-deep imaging survey, and a pulsars and fast transients survey. The imaging surveys will be done in full polarization over the frequency range 1130-1430 MHz, which corresponds to redshifts of z=0-0.256 for neutral hydrogen (HI). The spectral resolution is 12.2 kHz, or an HI velocity resolution of 2.6 km/s at z=0 and 3.2 km/s at z=0.256. The full resolution images will have a beam size of 15"x15"/sin(declination), and tapered data products (i.e., 30" resolution images) will also be available. The footprints of the imaging surveys are chosen to maximize coverage of multi-wavelength datasets, including the Herschel Atlas North Galactic Pole field, HetDex region, plus coordination with MaNGA and planned WEAVE follow-up. The survey footprints were also chosen to probe different regions of interest, including the CVn region, Coma cluster, and Perseus-Pisces supercluster. The key science cases for the imaging surveys include understanding how galaxy properties depend on environment, the role of interactions and gas accretion and removal, understanding the smallest gas-rich galaxies, connecting cold gas to AGN, understanding the history of star formation and AGN activity in the faint radio continuum population, and studying magnetic fields in galaxies and large-scale structure. After a proprietary period, the survey data products will be publicly available through the Apertif Long Term Archive (ALTA). Up-to-date information on Apertif and the planned surveys can be found at www.apertif.nl.Commissioning of the Apertif instrument is underway. Here we will present results from the imaging commissioning, highlighting the capabilities of the instrument as related to the key science cases of the imaging surveys.

  7. An evaluation of SEASAT-A candidate ocean industry economic verification experiments

    NASA Technical Reports Server (NTRS)

    1977-01-01

    A description of the candidate economic verification experiments which could be performed with SEASAT is provided. Experiments have been identified in each of the areas of ocean-based activity that are expected to show an economic impact from the use of operational SEASAT data. Experiments have been identified in the areas of Arctic operations, the ocean fishing industry, the offshore oil and natural gas industry, as well as ice monitoring and coastal zone applications.

  8. The lived experience of surviving breast cancer.

    PubMed

    Pelusi, J

    1997-09-01

    To explore women's perspectives of the experience of surviving breast cancer. Descriptive, phenomenologic. A community in the Southwestern United States. Eight women, ages 34-70 (mean = 54.6 years), who had completed breast cancer therapy. Average time since completion of therapy was 7.6 years (range = 2-15 years). Open-ended, audiotaped interviews were transcribed and analyzed using Colaizzi's method. Woman's description of the experience of surviving breast cancer. Nine theme categories were identified from the data: a future of uncertainty, abandonment, sanctuaries along the way, self-transcendence, finding resolution to the financial cost of cancer, mediating expectations of others, survivors' lifelines, circle of influences, and the journey. The themes were developed into an essential structure. The essential structure of the experience of surviving breast cancer is one of facing the unknown and experiencing many losses. At the same time, this journey evolves into one of growth and enlightenment, providing the woman with many unexpected and new opportunities. In searching for the meaning of the journey (which changes over time), one grows and finds comfort and challenge in the midst of uncertainty. The journey affects not only the women themselves but also those around them. Surviving breast cancer evokes many feelings and concerns for the women and those around them. By identifying, acknowledging, and addressing these feelings and concerns, women can find meaning in their journey, which provides comfort and self-growth while facing the unknown future. This journey continues and changes over time, as does the meaning of the journey. An awareness and description of current issues and feelings surrounding survivors of breast cancer can assist the multidisciplinary healthcare team in caring for and supporting women and their families and friends during this experience.

  9. Space Station life sciences guidelines for nonhuman experiment accommodation

    NASA Technical Reports Server (NTRS)

    Arno, R.; Hilchey, J.

    1985-01-01

    Life scientists will utilize one of four habitable modules which constitute the initial Space Station configuration. This module will be initially employed for studies related to nonhuman and human life sciences. At a later date, a new module, devoted entirely to nonhuman life sciences will be launched. This report presents a description of the characteristics of a Space Station laboratory facility from the standpoint of nonhuman research requirements. Attention is given to the science rationale for experiments which support applied medical research and basic gravitational biology, mission profiles and typical equipment and subsystem descriptions, issues associated with the accommodation of nonhuman life sciences on the Space Station, and conceptual designs for the initial operational capability configuration and later Space Station life-sciences research facilities.

  10. Skylab experiments. Volume 1: Physical science, solar astronomy

    NASA Technical Reports Server (NTRS)

    1973-01-01

    The basic subject of this volume is the solar astronomy program conducted on Skylab. In addition to descriptions of the individual experiments and the principles involved in their performance, a brief description is included of the sun and the energy characteristics associated with each zone. Wherever possible, related classroom activities have been identified and discussed in some detail. It will be apparent that the relationships rest not only in the field of solar astronomy, but also in the following subjects: (1) physics - optics, electromagnetic spectrum, atomic structure, etc.; (2) chemistry - emission spectra, kinetic theory, X-ray absorption, etc.; (3) biology - radiation and dependence on the sun; (4) electronics - cathode ray tubes, detectors, photomultipliers, etc.; (5) photography; (6) astronomy; and (7) industrial arts.

  11. Compendium of meteorological satellites and instrumentation. [US, USSR, UK, and French satellites

    NASA Technical Reports Server (NTRS)

    Stoldt, N. W.; Havanac, P. J.

    1973-01-01

    Pertinent information is presented for 98 launched and planned satellites of the U.S., U.K., U.S.S.R., and France, as well as their over 200 meteorological experiments or instruments. Summary information is provided for both operational and research satellites. Three major sections include: (1) an overview by country, of the various series of meteorological satellite programs; (2) brief descriptions of the satellites and their experiments; and (3) an extensive bibliography. A glossary of acronyms and two indexes for cross-referencing are also included. In addition, various tables and figures presenting satellite operating times, data coverage, location of launch sites, and descriptions of the launch vehicles used to orbit the meteorological satellites are given.

  12. Nurses' knowledge of pressure ulcer prevention, staging, and description.

    PubMed

    Pieper, B; Mott, M

    1995-01-01

    The purpose of this study was to examine registered nurses' (N = 228) knowledge of pressure ulcer prevention, pressure ulcer staging, and wound description. A 47-item, true-false Pressure Ulcer Knowledge Test was developed for he study. Nurses' knowledge was significantly higher the more recently they had heard a lecture or read an article about pressure ulcers. Knowledge scores were not related to educational background, age, or years of work experience.

  13. Qualitative description – the poor cousin of health research?

    PubMed Central

    2009-01-01

    Background The knowledge and use of qualitative description as a qualitative research approach in health services research is limited. The aim of this article is to discuss the potential benefits of a qualitative descriptive approach, to identify its strengths and weaknesses and to provide examples of use. Discussion Qualitative description is a useful qualitative method in much medical research if you keep the limitations of the approach in mind. It is especially relevant in mixed method research, in questionnaire development and in research projects aiming to gain firsthand knowledge of patients', relatives' or professionals' experiences with a particular topic. Another great advantage of the method is that it is suitable if time or resources are limited. Summary As a consequence of the growth in qualitative research in the health sciences, researchers sometimes feel obliged to designate their work as phenomenology, grounded theory, ethnography or a narrative study when in fact it is not. Qualitative description might be a useful alternative approach to consider. PMID:19607668

  14. Continuity and change in mothers' narratives of perinatal hospice.

    PubMed

    Lathrop, Anthony; VandeVusse, Leona

    2011-01-01

    (1) To broadly explore the experiences of women who chose to continue pregnancies affected by lethal fetal diagnoses and (2) to develop knowledge useful to nurses and other healthcare professionals who provide perinatal hospice (PH) care. Qualitative descriptive study using narrative analysis. Fifteen women who learned during their pregnancies of a lethal fetal diagnosis and chose to continue the affected pregnancies. Participants' stories of their PH experiences were recorded in face-to-face interviews. A qualitative approach using narrative analysis was used to identify themes and develop suggestions for care. The element of time was prevalent in mothers' stories. Some aspects of mothers' experiences continued, particularly feelings of love and connection to their babies. Mothers also reported evolving changes in their thoughts and feelings. Personal changes such as increased compassion, faith, and strength were frequently mentioned. Mothers described transient phases of highs and lows. Drawing personal meanings or life lessons was the main way mothers connected their experiences to their present lives. Mothers' descriptions of their experiences can enhance nurses' understanding of perinatal loss. Established care practices, such as birth planning and creating mementoes, were supported. Nurses can help mothers experiencing loss by elucidating and reflecting their personal meanings.

  15. Evaluating Abstract Art: Relation between Term Usage, Subjective Ratings, Image Properties and Personality Traits.

    PubMed

    Lyssenko, Nathalie; Redies, Christoph; Hayn-Leichsenring, Gregor U

    2016-01-01

    One of the major challenges in experimental aesthetics is the uncertainty of the terminology used in experiments. In this study, we recorded terms that are spontaneously used by participants to describe abstract artworks and studied their relation to the second-order statistical image properties of the same artworks (Experiment 1). We found that the usage frequency of some structure-describing terms correlates with statistical image properties, such as PHOG Self-Similarity, Anisotropy and Complexity. Additionally, emotion-associated terms correlate with measured color values. Next, based on the most frequently used terms, we created five different rating scales (Experiment 2) and obtained ratings of participants for the abstract paintings on these scales. We found significant correlations between descriptive score ratings (e.g., between structure and subjective complexity), between evaluative and descriptive score ratings (e.g., between preference and subjective complexity/interest) and between descriptive score ratings and statistical image properties (e.g., between interest and PHOG Self-Similarity, Complexity and Anisotropy). Additionally, we determined the participants' personality traits as described in the 'Big Five Inventory' (Goldberg, 1990; Rammstedt and John, 2005) and correlated them with the ratings and preferences of individual participants. Participants with higher scores for Neuroticism showed preferences for objectively more complex images, as well as a different notion of the term complex when compared with participants with lower scores for Neuroticism. In conclusion, this study demonstrates an association between objectively measured image properties and the subjective terms that participants use to describe or evaluate abstract artworks. Moreover, our results suggest that the description of abstract artworks, their evaluation and the preference of participants for their low-level statistical properties are linked to personality traits.

  16. Role strain among male RNs in the critical care setting: Perceptions of an unfriendly workplace.

    PubMed

    Carte, Nicholas S; Williams, Collette

    2017-12-01

    Traditionally, nursing has been a female-dominated profession. Men employed as registered nurses have been in the minority and little is known about the experiences of this demographic. The purpose of this descriptive, quantitative study was to understand the relationship between the variables of demographics and causes of role strain among male nurses in critical care settings. The Sherrod Role Strain Scale assesses role strain within the context of role conflict, role overload, role ambiguity and role incongruity. Data analysis of the results included descriptive and inferential statistics. Inferential statistics involved the use of repeated measures ANOVA testing for significant difference in the causes of role strain between male nurses employed in critical care settings and a post hoc comparison of specific demographic data using multivariate analyses of variance (MANOVAs). Data from 37 male nurses in critical care settings from the northeast of the United States were used to calculate descriptive statistics standard deviation, mean of the data analysis and results of the repeated ANOVA and the post hoc secondary MANOVA analysis. The descriptive data showed that all participants worked full-time. There was an even split from those participants who worked day shift (46%) vs. night shift (43%), most the participants indicated they had 15 years or more experience as an registered nurse (54%). Significant findings of this study include two causes of role strain in male nurses employed in critical care settings which are: role ambiguity and role overload based on ethnicity. Consistent with previous research findings, the results of this study suggest that male registered nurses employed in critical care settings do experience role strain. The two main causes of role strain in male nurses are role ambiguity and role overload. Copyright © 2017. Published by Elsevier Ltd.

  17. Evaluating Abstract Art: Relation between Term Usage, Subjective Ratings, Image Properties and Personality Traits

    PubMed Central

    Lyssenko, Nathalie; Redies, Christoph; Hayn-Leichsenring, Gregor U.

    2016-01-01

    One of the major challenges in experimental aesthetics is the uncertainty of the terminology used in experiments. In this study, we recorded terms that are spontaneously used by participants to describe abstract artworks and studied their relation to the second-order statistical image properties of the same artworks (Experiment 1). We found that the usage frequency of some structure-describing terms correlates with statistical image properties, such as PHOG Self-Similarity, Anisotropy and Complexity. Additionally, emotion-associated terms correlate with measured color values. Next, based on the most frequently used terms, we created five different rating scales (Experiment 2) and obtained ratings of participants for the abstract paintings on these scales. We found significant correlations between descriptive score ratings (e.g., between structure and subjective complexity), between evaluative and descriptive score ratings (e.g., between preference and subjective complexity/interest) and between descriptive score ratings and statistical image properties (e.g., between interest and PHOG Self-Similarity, Complexity and Anisotropy). Additionally, we determined the participants’ personality traits as described in the ‘Big Five Inventory’ (Goldberg, 1990; Rammstedt and John, 2005) and correlated them with the ratings and preferences of individual participants. Participants with higher scores for Neuroticism showed preferences for objectively more complex images, as well as a different notion of the term complex when compared with participants with lower scores for Neuroticism. In conclusion, this study demonstrates an association between objectively measured image properties and the subjective terms that participants use to describe or evaluate abstract artworks. Moreover, our results suggest that the description of abstract artworks, their evaluation and the preference of participants for their low-level statistical properties are linked to personality traits. PMID:27445933

  18. Determination of Solvent Effects on Keto-Enol Equilibria of 1,3-Dicarbonyl Compounds Using NMR: Revisiting a Classic Physical Chemistry Experiment

    ERIC Educational Resources Information Center

    Cook, A. Gilbert; Feltman, Paul M.

    2007-01-01

    The use of proton NMR to determine the equilibrium position of tautomeric 1,3-dicarbonyl compounds in various solvents has been a classic physical chemistry experiment. We are presenting an expansion of the excellent description of this experiment by Garland, Shoemaker, and Nibler. Often the assumption is made that the keto tautomer is always the…

  19. Digest of celestial X-ray missions and experiments

    NASA Technical Reports Server (NTRS)

    Locke, M. C.

    1982-01-01

    Information on instruments, the platforms that carried them, and the data they gathered is presented. Instrument selection was confined to detectors operating in the 0.20 to 300 keV range. Included are brief descriptions of the spacecraft, experiment packages and missions. Cross-referenced indexes are provided for types of instruments, energy ranges, time spans covered, positional catalogs and observational catalogs. Data sets from these experiments (NSSDC) are described.

  20. Regulatory Biology: Depressed Metabolic States

    NASA Technical Reports Server (NTRS)

    Holton, E. M. (Editor)

    1973-01-01

    Exobiological aspects of depressed metabolism and thermoregulation are discussed for subsequent development of biological space flight experiments. Included is a brief description of differential hypothermia in cancer chemotherapy.

  1. DOE Office of Scientific and Technical Information (OSTI.GOV)

    De Raedt, Hans; Katsnelson, Mikhail I.; Donker, Hylke C.

    It is shown that the Pauli equation and the concept of spin naturally emerge from logical inference applied to experiments on a charged particle under the conditions that (i) space is homogeneous (ii) the observed events are logically independent, and (iii) the observed frequency distributions are robust with respect to small changes in the conditions under which the experiment is carried out. The derivation does not take recourse to concepts of quantum theory and is based on the same principles which have already been shown to lead to e.g. the Schrödinger equation and the probability distributions of pairs of particles inmore » the singlet or triplet state. Application to Stern–Gerlach experiments with chargeless, magnetic particles, provides additional support for the thesis that quantum theory follows from logical inference applied to a well-defined class of experiments. - Highlights: • The Pauli equation is obtained through logical inference applied to robust experiments on a charged particle. • The concept of spin appears as an inference resulting from the treatment of two-valued data. • The same reasoning yields the quantum theoretical description of neutral magnetic particles. • Logical inference provides a framework to establish a bridge between objective knowledge gathered through experiments and their description in terms of concepts.« less

  2. Registration system for 71Ge rare decays in proportional counters for BEST experiment

    NASA Astrophysics Data System (ADS)

    Gavrin, V. N.; Gorbachev, V. V.; Ibragimova, T. V.; Kalikhov, A. V.; Shikhin, A. A.; Yants, V. E.

    2018-01-01

    New counting system for 71Ge decays rare events registration is developed for realization of the BEST experiment to search for sterile neutrinos. Description of the system, its technical and counting data are presented in the article. Comparison with already existing counting system for SAGE is given also.

  3. ARL Human Factors Engineering Technology: Overview of 6.2 Efforts for Dr. Lemnios, DDRE

    DTIC Science & Technology

    2012-03-01

    Soldier-focused Neurotechnologies . Summaries for each area include a brief description of the research, types of experiments, tests, and demonstrations...7 2.4 Soldier-focused Neurotechnologies ...focused Neurotechnologies In the research summaries, the questions posed during the review are addressed: • What types of experiments/studies/tests

  4. Profiles of Transformative Engagement: Identification, Description, and Relation to Learning and Instruction

    ERIC Educational Resources Information Center

    Pugh, Kevin J.; Bergstrom, Cassendra M.; Spencer, Bryden

    2017-01-01

    Transformative experience refers to learning episodes in which students use ideas from the science classroom to see and experience the world differently in their everyday lives. The construct is defined by three characteristics: (1) motivated use (application of learning in "free-choice" contexts), (2) expansion of perception (seeing…

  5. The Role of Online Reader Experience in Explaining Students' Performance in Digital Reading

    ERIC Educational Resources Information Center

    Gil-Flores, Javier; Torres-Gordillo, Juan-Jesus; Perera-Rodriguez, Victor-Hugo

    2012-01-01

    This study explores the relationship between students' extracurricular experiences online and their performance on the Program for International Student Assessment (PISA), focusing specifically on students' competence in digital reading. The study uses a descriptive, correlational, ex post facto design. The data are taken from Spanish students'…

  6. Does illness experience influence the recall of medical information?

    PubMed

    Krishnan, B; Glazebrook, C; Smyth, A

    1998-12-01

    Recall of a storyboard description of an unfamiliar illness was assessed in 66 healthy children and 40 children with chronic illness (cystic fibrosis or asthma). A significant interaction between verbal intelligence quotient and illness experience (p < 0.001) suggested that more able sick children may be resistant to learning new medical information.

  7. Three Cases of Adolescent Childbearing Decision-Making: The Importance of Ambivalence

    ERIC Educational Resources Information Center

    Bender, Soley S.

    2008-01-01

    Limited information is available about the childbearing decision-making experience by the pregnant adolescent. The purpose of this case study was to explore this experience with three pregnant teenagers. The study is based on nine qualitative interviews. Within-case descriptions applying the theoretical model of decision-making regarding unwanted…

  8. A Phenomenological Study on International Doctoral Students' Acculturation Experiences at a U.S. University

    ERIC Educational Resources Information Center

    Campbell, Throy A.

    2015-01-01

    A phenomenological method was used to analyze ten international doctoral students' description of their lived experiences at a United States (U.S.) university. The analysis was based on the theoretical premise of how students acculturate to their new educational settings. Three broad overlapping themes emerged: (1) participants' past experiences…

  9. The National Longitudinal Surveys Handbook. Revised.

    ERIC Educational Resources Information Center

    Ohio State Univ., Columbus. Center for Human Resource Research.

    This volume is designed as a comprehensive guide to the National Longitudinal Surveys of Labor Market Experience (NLS) which are concerned with the labor market experience of middle-aged and young men and women. Detailed descriptions of the objectives of the surveys, the samples covered, and the types of information collected are presented.…

  10. The Whiteness of Things and Light Scattering

    ERIC Educational Resources Information Center

    Gratton, L. M.; Lopez-Arias, T.; Calza, G.; Oss, S.

    2009-01-01

    We discuss some simple experiments dealing with intriguing properties of light and its interaction with matter. In particular, we show how to emphasize that light reflection, refraction and scattering can provide a proper, physical description of human perception of the "colour" white. These experiments can be used in the classroom with an enquiry…

  11. Staff and Student Experiences of Dialogue Days, a Student Engagement Activity

    ERIC Educational Resources Information Center

    Asghar, Mandy

    2016-01-01

    This paper reports the findings from a descriptive phenomenological exploration of the lived experience of dialogue days, a student engagement activity, from the perspectives of staff and students. I suggest that dialogue days enhance the relational and emotional aspects of learning with the potential to impact on future student engagement and…

  12. The Development of a Model for Designing Carrel Experiences for Science Students.

    ERIC Educational Resources Information Center

    Russell, James Douglas

    A description of the systems approach to designing of carrel experiences for science students is presented to provide a logical sequence and structure for instructional decisions. A brief historical discussion dating from 1961 and Postlethwait's work at Purdue University is given, and a rationale for the carrel approach is provided. The…

  13. Voyager backgrounder

    NASA Technical Reports Server (NTRS)

    1981-01-01

    The Voyager spacecraft and experiments are described. The spacecraft description includes the structure and configuration, communications systems, power supplies, computer command subsystems, and the science platform. The experiments discussed are investigations of cosmic rays, low-energy charged particles, magnetic fields, and plasma waves, along with studies in radio astronomy photopolarimetry. The tracking and data acquisition procedures for the missions are presented.

  14. The Fear Factor: How It Affects Students Learning to Program in a Tertiary Environment

    ERIC Educational Resources Information Center

    Rogerson, Christine; Scott, Elsje

    2010-01-01

    This paper examines how students' experiences of learning to program are affected by feelings of fear, using a phenomenological approach to elicit rich descriptions of personal experiences from the narratives of final year undergraduate students. In the course of reviewing current work concerning learning or teaching programming, certain focal…

  15. Neural Responses to the Production and Comprehension of Syntax in Identical Utterances

    ERIC Educational Resources Information Center

    Indefrey, Peter; Hellwig, Frauke; Herzog, Hans; Seitz, Rudiger J.; Hagoort, Peter

    2004-01-01

    Following up on an earlier positron emission tomography (PET) experiment (Indefrey et al., 2001), we used a scene description paradigm to investigate whether a posterior inferior frontal region subserving syntactic encoding for speaking is also involved in syntactic parsing during listening. In the language production part of the experiment,…

  16. Filtrates & Residues. Acid Pickling with Amines: An Experiment in Applied Chemistry for High School or Freshman Chemistry.

    ERIC Educational Resources Information Center

    Spears, Steven G.; And Others

    1988-01-01

    This article gives a brief description of the process of the removal of corrosion and millscale from the surfaces of ferrous metals by acid pickling. It suggests an experiment to illustrate this process including the procedure and a discussion of the results. (CW)

  17. Nursing Students' Experiences of the Empathy of Their Teachers: A Qualitative Study

    ERIC Educational Resources Information Center

    Mikkonen, Kristina; Kyngäs, Helvi; Kääriäinen, Maria

    2015-01-01

    The purpose of this study was to describe nursing students' experiences of empathy of nursing teachers with the emphasis on how experiencing empathy from their teachers influences students, their learning and professional development. This research was a qualitative descriptive study conducted through face-to-face interviews with nursing students.…

  18. My Hero, My Friend: Exploring Honduran Youths' Lived Experience of the God-Individual Relationship

    ERIC Educational Resources Information Center

    Mitchell, Monique B.; Silver, Christopher F.; Ross, Christopher F. J.

    2012-01-01

    Extensive social science research has focused on God image and God concept through the lens of attachment theory and the parental relationship. While vast theoretical frameworks exist, the authors suggest that more focused phenomenological research would shed light on adolescent lived experience within experiential descriptive language and…

  19. Service Delivery Experiences and Intervention Needs of Military Families with Children with ASD

    ERIC Educational Resources Information Center

    Davis, Jennifer M.; Finke, Erinn; Hickerson, Benjamin

    2016-01-01

    The purpose of this study was to describe the experiences of military families with children with autism spectrum disorder (ASD) specifically as it relates to relocation. Online survey methodology was used to gather information from military spouses with children with ASD. The finalized dataset included 189 cases. Descriptive statistics and…

  20. Walt Whitman: Five Years of Teaching in Paumanok.

    ERIC Educational Resources Information Center

    Maguire, John W.

    1984-01-01

    A review of the poet's teaching experience from 1836-1841 on Long Island, New York, includes Whitman's preparation for teaching, teaching conditions, references to teaching in a Whitman short story, comments by one of his students, a description of his teaching and disciplinary methods, and his own reflections on the experience. (MM)

  1. A Model for Teaching Ethical Meta-Principles: A Descriptive Experience

    ERIC Educational Resources Information Center

    Jones, Irma S.; Rivas, Olivia; Mancillas, Margarita

    2009-01-01

    As students, educators, outreach and community service experts enter their distinct professional worlds, each will be compelled to make a wide variety of decisions. The shaping of peoples' ethical beliefs occurs through personal experiences as well as family, culture, religion and peer pressure. In order for these students, educators, outreach and…

  2. High School Teachers' Experiences with Suicidal Students: A Descriptive Study

    ERIC Educational Resources Information Center

    Freedenthal, Stacey; Breslin, Lindsey

    2010-01-01

    Teachers are widely considered key gatekeepers to mental health services for students at risk for suicide. Using data from 120 teachers at two Denver-area high schools, this study investigated teachers' experiences with suicidal students. Analyses revealed that the majority of teachers (58.8%) reported that at least one student had disclosed…

  3. Distinctiveness of Encoding and Word Learning: Forms of "Distinctiveness" and Retention of Vocabulary Words.

    ERIC Educational Resources Information Center

    Shaughnessy, Michael F.; Cockrell, Kelly

    Two experiments examining the "distinctiveness of encoding" hypothesis are reported. The hypothesis suggests that specific forms of processing of events may result in the formation of more exact perceptual descriptions and thus more distinctive records in memory. The two experiments reported address shortcomings in previous research on…

  4. Identifying the Categories of Spiritual Experience Encountered by Therapists in Their Clinical Work

    ERIC Educational Resources Information Center

    Ross, Alistair

    2016-01-01

    Spirituality has replaced religion in popular culture and its presence is being felt in the therapeutic world. Using a questionnaire completed by 104 people utilising six descriptive definitions of spirituality and 36 categories of spiritual experience, three meta-themes of forms of spirituality emerged through a thematic analysis. These are…

  5. Communications technology satellite

    NASA Technical Reports Server (NTRS)

    1976-01-01

    A description of the Communications Technology Satellite (CTS), its planned orbit, its experiments, and associated ground facilities was given. The communication experiments, to be carried out by a variety of groups in both the United States and Canada, include tele-education, tele-medicine, community interaction, data communications and broadcasting. A historical summary of communications satellite development was also included.

  6. Skylab S191, S192 program descriptions. [earth radiation data analysis

    NASA Technical Reports Server (NTRS)

    Mack, M.

    1976-01-01

    Software developed to assist in assessing and analyzing earth radiation data obtained from Skylab S191 and S192 experiments are described. A block data generation routine is included along with a plot program for the S191 experiment. Changes in format from that of the original JSC tapes are discussed.

  7. Patterns of Generative Discourse in Online Discussions during the Field Experience

    ERIC Educational Resources Information Center

    Lafferty, Karen Elizabeth; Kopcha, Theodore J.

    2016-01-01

    This study examined how online discussion of the classroom challenges that preservice teachers face during the field experience can lead to problem solving and knowledge generation. Drawing upon Horn and Little's (2010) descriptions of generative discourse, the study examined how a community of preservice teachers, their university supervisors,…

  8. Parental Involvement at the High School Level: Parents' Perspectives

    ERIC Educational Resources Information Center

    Hall, Nancy

    2012-01-01

    This study of parental involvement in high school focused on parents' descriptions of their experiences of involvement. The study is best described as a qualitative study. Guided by a phenomenological approach, the researcher attempted to describe parents' experiences of involvement in their child's high school and elicit themes…

  9. A Mathematician Learns the Basics of Writing Instruction: An Immersion Experience with Long-Term Benefits

    ERIC Educational Resources Information Center

    Doty, Lynne L.

    2012-01-01

    Initially designed to be an interdisciplinary experiment that would change attitudes about mathematics, the semester-long collaboration between a writing instructor and a mathematics instructor yielded unexpected long-term results. The collaboration served as an immersion in methods and techniques used by writing instructors. Description of…

  10. Information Technology Manager's Perspective on Experiences with Service Quality and Customer Satisfaction: A Phenomenology Study

    ERIC Educational Resources Information Center

    Porter, Sherry A.

    2016-01-01

    The general problem was that, in the competitive telecommunications industry, information technology service providers have to develop ways to improve on customer satisfaction and service quality during service disruptions to meet service level agreements. A descriptive phenomenological study was used to explore the lived experiences and…

  11. Absolutely Write! Teaching the Craft Elements of Writing. Bill Harp Professional Teachers Library.

    ERIC Educational Resources Information Center

    Thomason, Tommy; York, Carol

    This book discusses basic craft elements of writing, illustrates from adult and children's literature what constitutes an engaging passage of description, and then illustrates how that craft can be taught in a workshop environment. In addition, this book includes involvement experiences that help teachers experience these craft elements. After an…

  12. Exploring Rural High School Learners' Experience of Mathematics Anxiety in Academic Settings

    ERIC Educational Resources Information Center

    Hlalele, Dipane

    2012-01-01

    The purpose of the study was to explore rural high school learners' experience of mathematics anxiety in academic settings. Mathematics anxiety has been found to have an adverse effect on confidence, motivation and achievement. This quantitative study is exploratory and descriptive in nature. The participants were 403 learners doing mathematics in…

  13. Secondary School Teachers' Experiences of Teaching Pregnant Learners in Limpopo Province, South Africa

    ERIC Educational Resources Information Center

    Matlala, Sogo F.; Nolte, A. G. W.; Temane, M. A.

    2014-01-01

    This paper presents the findings of a study on the experiences of secondary school teachers on teaching pregnant learners in Limpopo Province. A qualitative, exploratory, descriptive and contextual design was used. Semi-structured interviews were conducted with ten purposively selected secondary school teachers. Data analysis yielded six themes,…

  14. Apollo 14: Science at Fra Mauro.

    ERIC Educational Resources Information Center

    National Aeronautics and Space Administration, Washington, DC.

    The many scientific activities and experiments performed during the Apollo 14 Mission are presented in a descriptive, non-technical format. Content relates to experiments on the lunar surface and to those performed while traveling in space, and provides a great deal of information about the flight. Many photographs from the journey, a map of the…

  15. Is a Response to Intervention (RTI) Approach to Preschool Language and Early Literacy Instruction Needed?

    ERIC Educational Resources Information Center

    Greenwood, Charles R.; Carta, Judith J.; Atwater, Jane; Goldstein, Howard; Kaminski, Ruth; McConnell, Scott

    2013-01-01

    Preschool experience plays a role in children's development. However, for programs with language and early literacy goals, the question remains whether preschool instructional experiences are sufficiently effective to achieve these goals for all children. In a multisite study, the authors conducted a process-product description of preschool…

  16. A cyclic ground test of an ion auxiliary propulsion system: Description and operational considerations

    NASA Technical Reports Server (NTRS)

    Ling, Jerri S.; Kramer, Edward H.

    1988-01-01

    The Ion Auxiliary Propulsion System (IAPS) experiment is designed for launch on an Air Force Space Test Program satellite (NASA-TM-78859; AIAA Paper No. 78-647). The primary objective of the experiment is to flight qualify the 8 cm mercury ion thruster system for stationkeeping applications. Secondary objectives are measuring the interactions between operating ion thruster systems and host spacecraft, and confirming the design performance of the thruster systems. Two complete 8 cm mercury ion thruster subsystems will be flown. One of these will be operated for 2557 on and off cycles and 7057 hours at full thrust. Tests are currently under way in support of the IAPS flight experiment. In this test an IAPS thruster is being operated through a series of startup/run/shut-down cycles which simulate thruster operation during the planned flight experiment. A test facility description and operational considerations of this testing using an engineering model 8 cm thruster (S/N 905) is the subject of this paper. Final results will be published at a later date when the ground test has been concluded.

  17. What is French for déjà vu? Descriptions of déjà vu in native French and English speakers.

    PubMed

    Fortier, Jonathan; Moulin, Chris J A

    2015-11-01

    Little is known about how people characterise and classify the experience of déjà vu. The term déjà vu might capture a range of different phenomena and people may use it differently. We examined the description of déjà vu in two languages: French and English, hypothesising that the use of déjà vu would vary between the two languages. In French, the phrase déjà vu can be used to indicate a veridical experience of recognition - as in "I have already seen this face before". However, the same is not true in English. In an online questionnaire, we found equal rates of déjà vu amongst French and English speakers, and key differences in how the experience was described. As expected, the French group described the experience as being more frequent, but there was the unexpected finding that they found it to be more troubling. Copyright © 2015 Elsevier Inc. All rights reserved.

  18. Collaborative encoding and memory accuracy: examining the effects of interactive components of co-construction processes.

    PubMed

    Foley, Mary Ann; Fried, Adina Rachel; Cowan, Emily; Bays, Rebecca Brooke

    2014-01-01

    In 2 experiments, the effect of collaborative encoding on memory was examined by testing 2 interactive components of co-construction processes. One component focused on the nature of the interactive exchange between collaborators: As the partners worked together to create descriptions about ways to interact with familiar objects, constraints were imposed on the interactions by requiring them to take turns (Experiment 1) or to interact without constraints (Experiment 2). The nature of the relationship between partners was manipulated as well by including 2 pair types, friends or unfamiliar peers (Experiments 1 and 2). Interactive component effects were found to influence spontaneous activations through content analyses of participants' descriptions, the patterns of false recognition errors, and the relationship between content and errors. The findings highlight the value of examining the content of participants' collaborative efforts when assessing the effects of collaborative encoding on memory and point to mechanisms mediating collaboration's effects. Because the interactions occurred within the context of an imagery generation task, the findings are also intriguing because of their implications for the use of guided imagery techniques that incorporate co-construction processes.

  19. Minimum Information about a Spinal Cord Injury Experiment: A Proposed Reporting Standard for Spinal Cord Injury Experiments

    PubMed Central

    Ferguson, Adam R.; Popovich, Phillip G.; Xu, Xiao-Ming; Snow, Diane M.; Igarashi, Michihiro; Beattie, Christine E.; Bixby, John L.

    2014-01-01

    Abstract The lack of reproducibility in many areas of experimental science has a number of causes, including a lack of transparency and precision in the description of experimental approaches. This has far-reaching consequences, including wasted resources and slowing of progress. Additionally, the large number of laboratories around the world publishing articles on a given topic make it difficult, if not impossible, for individual researchers to read all of the relevant literature. Consequently, centralized databases are needed to facilitate the generation of new hypotheses for testing. One strategy to improve transparency in experimental description, and to allow the development of frameworks for computer-readable knowledge repositories, is the adoption of uniform reporting standards, such as common data elements (data elements used in multiple clinical studies) and minimum information standards. This article describes a minimum information standard for spinal cord injury (SCI) experiments, its major elements, and the approaches used to develop it. Transparent reporting standards for experiments using animal models of human SCI aim to reduce inherent bias and increase experimental value. PMID:24870067

  20. Normative and descriptive accounts of the influence of power and contingency on causal judgement.

    PubMed

    Perales, José C; Shanks, David R

    2003-08-01

    The power PC theory (Cheng, 1997) is a normative account of causal inference, which predicts that causal judgements are based on the power p of a potential cause, where p is the cause-effect contingency normalized by the base rate of the effect. In three experiments we demonstrate that both cause-effect contingency and effect base-rate independently affect estimates in causal learning tasks. In Experiment 1, causal strength judgements were directly related to power p in a task in which the effect base-rate was manipulated across two positive and two negative contingency conditions. In Experiments 2 and 3 contingency manipulations affected causal estimates in several situations in which power p was held constant, contrary to the power PC theory's predictions. This latter effect cannot be explained by participants' conflation of reliability and causal strength, as Experiment 3 demonstrated independence of causal judgements and confidence. From a descriptive point of view, the data are compatible with Pearce's (1987) model, as well as with several other judgement rules, but not with the Rescorla-Wagner (Rescorla & Wagner, 1972) or power PC models.

  1. Pharmacy students’ experiences in provision of community pharmacy mental health services

    PubMed Central

    Szumilas, Magdalena; Rowe, Denise; Landry, Kathryn; Martin-Misener, Ruth; Kutcher, Stan; Gardner, David

    2014-01-01

    Background: Little information is available describing the pharmacy student’s experience working in community practice with people with lived experience of mental illness. Students’ perspectives as observers, learners, technical staff and future pharmacists are important. Objective: To gain a better understanding of the pharmacy student experience in community pharmacy–based service provision to people with lived experience of mental illness. Methods: We conducted a qualitative study using interpretive description and application of the Theoretical Domains Framework. Focus groups were held with third- and fourth-year undergraduate pharmacy students from one Canadian university. Results: Two student focus groups were held in the fall of 2012 with 11 students (7 third year and 4 fourth year), 6 women and 5 men, mean age 24.5 (range, 21 to 30) years, averaging 3.2 years (range, 2 weeks to 7 years) of cumulative, mostly part-time, community pharmacy experience. Three broad themes emerged from the pharmacy student experience: (1) business tension; (2) roles, responsibilities and relationships; and (3) stigma. Students discussed their own roles, responsibilities and relationships in a pluralistic identity experience (i.e., pharmacy student, technician, future pharmacist). Application of the Theoretical Domains Framework demonstrated numerous influences on behaviour. Conclusions: From the students’ description of community pharmacy–based care of people with lived experience of mental illness, significant issues exist with current practices and behaviours. Advancing the role of pharmacists and pharmacy students to meet the needs of people with mental illness will require strategies to address multifactorial influences on behaviour. PMID:24494016

  2. A systematic review and meta-ethnography of the qualitative literature: experiences of the menarche.

    PubMed

    Chang, Yu-Ting; Hayter, Mark; Wu, Shu-Chen

    2010-02-01

    This article is a report of a systematic review and meta-ethnography of women's experience of menarche. Adolescents may experience menarche at different ages, but menarche remains an important milestone in the female maturation process, representing the transition from childhood to womanhood. Systematic review and meta-ethnography. Electronic databases were systematically searched and supplemented with reference lists searching. Qualitative studies of women's experience of menarche were purposely selected and questions proposed by the critical appraisal skills programme was adapted and used to assess papers prior to synthesis. Key themes and concepts were extracted and synthesised using meta-ethnography. Fourteen studies on menarche experience were identified. The majority of studies were descriptive. Five key concepts were identified from all 14 papers as being descriptive of women's experience of menarche. These included: menarche preparation, significant others' response to menarche, physical experience of menarche, psychological experience of menarche and social-cultural perspective of menarche. Menarche experience had a major impact on women. Women went through physical, psychological and social-culture changes when their first menstrual flow came. Menarche preparation has been shown to have a beneficial impact on the menarcheal woman. School nurses have accurate knowledge about sexual health; they can and should provide appropriate menstrual education. The findings can be used by school nurses working with adolescents as the basis for a framework of intervention strategies directed towards helping adolescents to better accept their menarche and transition into womanhood.

  3. Concept definition for space station technology development experiments. Experiment definition, task 2

    NASA Technical Reports Server (NTRS)

    1986-01-01

    The second task of a study with the overall objective of providing a conceptual definition of the Technology Development Mission Experiments proposed by LaRC on space station is discussed. During this task, the information (goals, objectives, and experiment functional description) assembled on a previous task was translated into the actual experiment definition. Although still of a preliminary nature, aspects such as: environment, sensors, data acquisition, communications, handling, control telemetry requirements, crew activities, etc., were addressed. Sketches, diagrams, block diagrams, and timeline analyses of crew activities are included where appropriate.

  4. First-principles calculations, experimental study, and thermodynamic modeling of the Al-Co-Cr system.

    PubMed

    Liu, Xuan L; Gheno, Thomas; Lindahl, Bonnie B; Lindwall, Greta; Gleeson, Brian; Liu, Zi-Kui

    2015-01-01

    The phase relations and thermodynamic properties of the condensed Al-Co-Cr ternary alloy system are investigated using first-principles calculations based on density functional theory (DFT) and phase-equilibria experiments that led to X-ray diffraction (XRD) and electron probe micro-analysis (EPMA) measurements. A thermodynamic description is developed by means of the calculations of phase diagrams (CALPHAD) method using experimental and computational data from the present work and the literature. Emphasis is placed on modeling the bcc-A2, B2, fcc-γ, and tetragonal-σ phases in the temperature range of 1173 to 1623 K. Liquid, bcc-A2 and fcc-γ phases are modeled using substitutional solution descriptions. First-principles special quasirandom structures (SQS) calculations predict a large bcc-A2 (disordered)/B2 (ordered) miscibility gap, in agreement with experiments. A partitioning model is then used for the A2/B2 phase to effectively describe the order-disorder transitions. The critically assessed thermodynamic description describes all phase equilibria data well. A2/B2 transitions are also shown to agree well with previous experimental findings.

  5. A descriptive study of patient satisfaction and the structural factors of Norwegian intensive care nursing.

    PubMed

    Johannessen, Gudrun; Eikeland, Anne; Stubberud, Dag-Gunnar; Fagerstöm, Lisbeth

    2011-10-01

    The aim of this study was to describe patient satisfaction with nursing care in three different Norwegian Coronary Intensive Care Units and compare the results with other structural factors such as nursing competence, skill-mix, clinical experience, nurse to patient ratio and number of beds. A descriptive and comparative design was employed and 150 patients at three Coronary Intensive Care Units were included. Patient satisfaction data was collected using the Intensive Nursing Care Quality Instrument (59 items). The data collected was comprised of two parts: a questionnaire and information on the structural factors of the organisational structure. The data was analysed using descriptive statistics. Patients expressed overall satisfaction with the nursing care. No clear association was found between patient satisfaction and nursing competence, skill-mix, clinical experience, nurse to patient ratio and number of beds. When comparing results between units, significant differences were seen for 17 out of 46 questions. The results provide insight into how critical care staffing and skill-mix affect patient satisfaction and guide future nursing research in this subject area. Copyright © 2011. Published by Elsevier Ltd.

  6. Hispanic nurses' experiences of bias in the workplace.

    PubMed

    Moceri, Joane T

    2014-01-01

    The continuing issue of health inequity for Hispanics highlights the importance of retaining Hispanic nurses in the workplace. This article describes the use of short answers such as "Describe the bias you experienced" and "If a patient refused care, what was the reason given?" to increase understandings about bias through the descriptions of Hispanic nurses. In this study, bias was defined as those implicit negative stereotypes and attitudes that negatively affect judgments about, evaluations of, and actions toward others. For this qualitative component of a descriptive study employing both qualitative and quantitative methods, 111 Hispanic nurses responded to open-ended questions about experiences of bias that were included with a survey tool and demographic questionnaire. Three themes emerged: being overlooked and undervalued, having to prove competency, and living with "only-ness." Respect was an overarching concept. The written descriptions of bias provided depth and understanding to the quantitative findings. Nurse leaders are well positioned to develop and implement strategies to more effectively support Hispanic nurses and to promote nonbiased interactions in the workplace. Retaining Hispanic nurses is a vital component to address issues of health inequity for Hispanic patients.

  7. Research Proposal for the Design and Engineering Phase of a Solar Heating and Cooling System Experiment at the Warner Robins Public Library, Warner Robins, Georgia. Submitted to the United States Energy Research and Development Administration.

    ERIC Educational Resources Information Center

    Phillips, Warren H.; And Others

    A number of reasons are advanced to include a solar heating and cooling experiment in a library building. The unique aspects of the experiment are to be a seasonally adjustable collector tilt and testing of a new generation of absorption air conditioners. After a brief description of the proposed experiment, the proposal contains forms filed by…

  8. Astronomy through the Skylab scientific airlocks.

    NASA Technical Reports Server (NTRS)

    Henize, K. G.; Weinberg, J. L.

    1973-01-01

    Description of Skylab astronomy experiments (other than the Apollo Telescope Mount experiments) designed to study the earth's atmosphere, particles near the spacecraft, various components of the background skylight, the spectra of the sun, and the features of stars, nebulae, and galaxies. Emphasis is placed on the eight experiments that will operate through the scientific airlocks in the Orbital Workshop. The major features of equipment to be used in each experiment are outlined together with characteristics and relevance of information expected in each case.

  9. Definition of smolder experiments for Spacelab

    NASA Technical Reports Server (NTRS)

    Summerfield, M.; Messina, N. A.; Ingram, L. S.

    1979-01-01

    The feasibility of conducting experiments in space on smoldering combustion was studied to conceptually design specific smoldering experiments to be conducted in the Shuttle/Spacelab System. Design information for identified experiment critical components is provided. The analytical and experimental basis for conducting research on smoldering phenomena in space was established. Physical descriptions of the various competing processes pertaining to smoldering combustion were identified. The need for space research was defined based on limitations of existing knowledge and limitations of ground-based reduced-gravity experimental facilities.

  10. Mission requirements for a manned earth observatory. Volume 1, task 1: Experiment selection, definition, and documentation

    NASA Technical Reports Server (NTRS)

    1973-01-01

    Information related to proposed earth observation experiments for shuttle sortie missions (SSM) in the 1980's is presented. The step-wise progression of study activities and the development of the rationale that led to the identification, selection, and description of earth observation experiments for SSM are listed. The selected experiments are described, defined, and documented by individual disciplines. These disciplines include: oceanography; meteorology; agriculture, forestry, and rangeland; geology; hydrology; and environmental impact.

  11. 15 CFR 950.3 - National Climatic Center (NCC).

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...; develops analytical and descriptive products to meet user requirements; and provides facilities for the... Meteorological Experiment meteorological data, Global Atmospheric Research Program basic data set, solar...

  12. 15 CFR 950.3 - National Climatic Center (NCC).

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...; develops analytical and descriptive products to meet user requirements; and provides facilities for the... Meteorological Experiment meteorological data, Global Atmospheric Research Program basic data set, solar...

  13. 15 CFR 950.3 - National Climatic Center (NCC).

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...; develops analytical and descriptive products to meet user requirements; and provides facilities for the... Meteorological Experiment meteorological data, Global Atmospheric Research Program basic data set, solar...

  14. 15 CFR 950.3 - National Climatic Center (NCC).

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...; develops analytical and descriptive products to meet user requirements; and provides facilities for the... Meteorological Experiment meteorological data, Global Atmospheric Research Program basic data set, solar...

  15. 15 CFR 950.3 - National Climatic Center (NCC).

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...; develops analytical and descriptive products to meet user requirements; and provides facilities for the... Meteorological Experiment meteorological data, Global Atmospheric Research Program basic data set, solar...

  16. Applications Technology Satellite and Communications Technology Satellite user experiments for 1967-1980 reference book. Volume 4: Abstracts

    NASA Technical Reports Server (NTRS)

    Engler, N. A.; Nash, J. F.; Strange, J. D.

    1980-01-01

    The important user experiments conducted during the fourteen year period from 1966 to 1980 are summarized. A description of each of the satellites and a brief summary of each user experiment is presented. A cross index of user experiments sorted by various parameters and a listing of keywords versus experiment number is included. The experiments are grouped by type of service offered; for example, education, health services, and data transmission. A bibliography of reports by accession number and by author is also presented. User viewpoints of the systems are presented.

  17. Contribution of student involvement in production/service unit and experience of industry practices to entrepreneurial attitude and the impact entrepeneurship readiness of vocational high school students of great Malang

    NASA Astrophysics Data System (ADS)

    Mukminna, Halimahtus; Isnandar, Muladi

    2017-09-01

    Purpose of this research was to determine the contribution of student involvement in production/ service unit (X1), experience of industry practices (X2), and entrepreneurial attitude (Y) towards readiness entrepreneurship (Z) of vocational student regional Malang. The design of the study using a quantitative approach. The samples used as many as 130 respondents. Instruments used for collecting data in the form of questionnaires. Data analysis included descriptive and test of hypothesis. The result showed: that the description of data on the level of student involvement in production/ service unit, experience of industry practices, entrepreneurial attitude and entrepreneurship readiness in the high category. The contribution student involvement in production/ service unit of entrepreneurial attitude of 10.6%. The contribution experience of industry practices of entrepreneurial attitude of 17.4%. The contribution student involvement in production/ service unit and experience of industry practices simultaneously to entrepreneurial attitude of 44.1%. The contribution student involvement in production/ service unit of readiness entrepreneurship of 4%. The contribution experience of industry practices of readiness entrepreneurship of 5%. The contribution entrepreneurial attitude of readiness entrepreneurship of 16%. Finally, the contribution student involvement in production/ service unit, experience of industry practices, and entrepreneurial attitude simultaneously to readiness entrepreneurship of 50.3%.

  18. A descriptive qualitative study of adolescent girls' well-being in Northern Finland.

    PubMed

    Wiens, Varpu; Kyngäs, Helvi; Pölkki, Tarja

    2014-01-01

    Previous studies have shown that girls present welfare-related symptoms differently than boys and that the severity of their symptoms increases with age. Girls living in Northern Finland experience reduced well-being in some aspects of their lives. However, the opinions of girls on these matters have not previously been studied. The aim of this study was to describe girls' well-being in Northern Finland. This is a descriptive qualitative study. The participants were 117 girls aged between 13 and 16 who were living in the province of Lapland in Finland and attending primary school. Data were collected electronically; the girls were asked to respond to a set of open-ended questions using a computer during a school day. The responses were evaluated by using inductive content analysis. Four main categories of girls' well-being were identified: health as a resource, a beneficial lifestyle, positive experience of life course, and favourable social relationships. Health as a resource was about feeling healthy and the ability to enjoy life. A beneficial lifestyle was about healthy habits and meaningful hobbies. Positive experience of life course is related to high self-esteem and feeling good, safe, and optimistic. Favourable social relationships meant having good relationships with family and friends. To the participating girls, well-being was a positive experience and feeling which was revealed when they interact between their relationships, living conditions, lifestyle, and environment. Knowledge about girls' description of their well-being can be used to understand how the girls themselves and their environment influence their well-being and what can be done to promote it.

  19. Multilevel model of polycrystalline materials: grain boundary sliding description

    NASA Astrophysics Data System (ADS)

    Sharifullina, E.; Shveykin, A.; Trusov, P.

    2017-12-01

    Material behavior description in a wide range of thermomechanical effects is one of the topical areas in mathematical modeling. Inclusion of grain boundary sliding as an important mechanism of polycrystalline material deformation at elevated temperatures and predominant deformation mechanism of metals and alloys in structural superplasticity allows to simulate various deformation regimes and their transitions (including superplasticity regime with switch-on and switch-off regimes). The paper is devoted to description of grain boundary sliding in structure of two-level model, based on crystal plasticity, and relations for determination the contribution of this mechanism to inelastic deformation. Some results are presented concerning computational experiments of polycrystalline representative volume deformation using developed model.

  20. Computed tomography of congenital brain malformations

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Sarwar, M.

    1984-01-01

    This book is illustrated showing each condition. This book is designed to correlate the pathology of CNS malformations with their CT scan appearance, mainly on the axial images. The author has drawn upon his personal experience and the information gleaned from the literature dealing with the description of the CT scan findings of these malformations. The emphasis is on simplicity of description. Since a large degree of morphological variation exists in each entity, numerous illustrations (wherever applicable) are shown to depict those variations. When appropriate, deficiency of the CT scan in the evaluation of these CNS malformations also is indicated.more » A description of CNS embryology is included as well.« less

  1. Data catalog series for space science and applications flight missions. Volume 1A: Descriptions of planetary and heliocentric spacecraft and investigations, second edition

    NASA Technical Reports Server (NTRS)

    Cameron, Winifred Sawtell (Editor); Vostreys, Robert W. (Editor)

    1988-01-01

    The main purpose of the data catalog series is to provide descriptive references to data generated by space science flight missions. The data sets described include all of the actual holdings of the Space Science Data Center (NSSDC), all data sets for which direct contact information is available, and some data collections held and serviced by foreign investigators, NASA and other U.S. government agencies. This volume contains narrative descriptions of planetary and heliocentric spacecraft and associated experiments. The following spacecraft series are included: Mariner, Pioneer, Pioneer Venus, Venera, Viking, Voyager, and Helios. Separate indexes to the planetary and interplanetary missions are also included.

  2. Data-analysis issues in a phenomenographic investigation of information literacy in nursing.

    PubMed

    Forster, Marc

    2013-11-01

    To explore two contrasting methods of phenomenographic data analysis. Phenomenography is a still-uncommon but increasingly used methodology based on qualitative interviews that allows experiences to be categorised and put into a descriptive structure for use in developing educational interventions. There are two different approaches in the literature to analysing data: the Marton and Åkerlind methods. A doctoral research project investigating the role of information literacy in evidence-based practice in nursing. The phenomenographic study involves open-ended interviews in which participants are asked to describe their 'life-world' where the phenomenon is experienced, covering the contexts in which it is experienced and how it is experienced. The researcher attempts to develop statements from the interview transcripts that describe representative ways of experiencing the phenomenon in the form of 'categories of description'. A category of description represents a qualitatively different way of experiencing a phenomenon. This article discusses the reasons for adopting phenomenography, phenomenography's epistemological assumptions, and the strengths and weaknesses of the two different data-analysis methods. Phenomenography's strength is its ability to develop logical structures that give a picture of the experience of a phenomenon while being able to read into the structure as much of the complexity of that experience as is consciously and practically possible. One method, described as the 'Åkerlind' method, emerged as the appropriate method for phenomenographic studies in nursing.

  3. Homosexuality and the U.S. Military

    DTIC Science & Technology

    1980-06-01

    November 9, M-75 20. Finger, F.W. "Sex beliefs and practices among male college students," Journal of Abnormal and Social Psychology , No. 42, pp. 57...description of each of the seven 0 to 6 ratings shown above. A less detailed description follows: "Based on both psychologic reactions and overt experience...successfully..." Cory (1964): Freedman (1971) in his book Homosexuality and Psychological Functioning makes reference to a 1964 work by D.W. Cory which

  4. An overview of Dutch participation in the Spacelab D1 mission and the Columbus Space Station Project

    NASA Technical Reports Server (NTRS)

    1986-01-01

    Articles and a few short descriptions of recent developments in the field of space travel are discussed. Information on research and technology in space to facilitate contact between these two fields is provided. A description is given of the successful Spacelab D-1 flight and the standard instrument package. The Netherlands experiments in the D-1 mission, the next Spacelab flights, and the Columbus program are discussed.

  5. Coordinated ionospheric and magnetospheric observations from the ISIS 2 satellite by the ISIS 2 experimenters. Volume 3: High-latitude charged particle, magnetic field and ionospheric plasma observations during northern summer

    NASA Technical Reports Server (NTRS)

    1980-01-01

    A list of ISIS 2 experiments and a description of the satellite are presented. Instrumentation of the satellite included an auroral scanning photometer, a red line photometer, a swept frequency sounder, an ion mass spectrometer, and triaxial fluxgate magnetometer. Data format descriptions are provided. Included with the geophysical data set is a list of all passes.

  6. Gemini Program Mission Planning Report

    NASA Technical Reports Server (NTRS)

    1965-01-01

    This report defines the Gemini Program objectives and presents guidelines for the individual Gemini missions. It provides general space vehicle configuration data, and descriptions of planned missions. Contingency mission requirements and extravehicular operations to be performed during specific missions are described in the last two sections of the basic document. Data on spacecraft weights and Gemini Launch Vehicle performance capabilities are provided in Appendix A, while Appendix B provides descriptions of onboard experiments to be conducted during Gemini missions.

  7. A novel binary shape context for 3D local surface description

    NASA Astrophysics Data System (ADS)

    Dong, Zhen; Yang, Bisheng; Liu, Yuan; Liang, Fuxun; Li, Bijun; Zang, Yufu

    2017-08-01

    3D local surface description is now at the core of many computer vision technologies, such as 3D object recognition, intelligent driving, and 3D model reconstruction. However, most of the existing 3D feature descriptors still suffer from low descriptiveness, weak robustness, and inefficiency in both time and memory. To overcome these challenges, this paper presents a robust and descriptive 3D Binary Shape Context (BSC) descriptor with high efficiency in both time and memory. First, a novel BSC descriptor is generated for 3D local surface description, and the performance of the BSC descriptor under different settings of its parameters is analyzed. Next, the descriptiveness, robustness, and efficiency in both time and memory of the BSC descriptor are evaluated and compared to those of several state-of-the-art 3D feature descriptors. Finally, the performance of the BSC descriptor for 3D object recognition is also evaluated on a number of popular benchmark datasets, and an urban-scene dataset is collected by a terrestrial laser scanner system. Comprehensive experiments demonstrate that the proposed BSC descriptor obtained high descriptiveness, strong robustness, and high efficiency in both time and memory and achieved high recognition rates of 94.8%, 94.1% and 82.1% on the considered UWA, Queen, and WHU datasets, respectively.

  8. The Experience of Emotion

    PubMed Central

    Barrett, Lisa Feldman; Mesquita, Batja; Ochsner, Kevin N.; Gross, James J.

    2007-01-01

    Experiences of emotion are content-rich events that emerge at the level of psychological description, but must be causally constituted by neurobiological processes. This chapter outlines an emerging scientific agenda for understanding what these experiences feel like and how they arise. We review the available answers to what is felt (i.e., the content that makes up an experience of emotion) and how neurobiological processes instantiate these properties of experience. These answers are then integrated into a broad framework that describes, in psychological terms, how the experience of emotion emerges from more basic processes. We then discuss the role of such experiences in the economy of the mind and behavior. PMID:17002554

  9. The Influence of Educational Experience on the Development of Cognitive Skills as Measured in Formal Tests and Experiments: A Case Study from the Mexican States of Yucatan and Quintana Roo. Final Report.

    ERIC Educational Resources Information Center

    Sharp, Donald W.; Cole, Michael

    The major purpose of the research reported was to assess whether developmental changes in performance on standard psychological tests may be more a reflection of educational experience than maturation or traditional socialization practices. The investigation was reported in three phases: 1) description of the general and specific experimental…

  10. Low Earth Orbital Mission Aboard the Space Test Experiments Platform (STEP-3)

    NASA Technical Reports Server (NTRS)

    Brinza, David E.

    1992-01-01

    A discussion of the Space Active Modular Materials Experiments (SAMMES) is presented in vugraph form. The discussion is divided into three sections: (1) a description of SAMMES; (2) a SAMMES/STEP-3 mission overview; and (3) SAMMES follow on efforts. The SAMMES/STEP-3 mission objectives are as follows: assess LEO space environmental effects on SDIO materials; quantify orbital and local environments; and demonstrate the modular experiment concept.

  11. Apollo experience report: Guidance and control systems. Lunar module stabilization and control system

    NASA Technical Reports Server (NTRS)

    Shelton, D. H.

    1975-01-01

    A brief functional description of the Apollo lunar module stabilization and control subsystem is presented. Subsystem requirements definition, design, development, test results, and flight experiences are discussed. Detailed discussions are presented of problems encountered and the resulting corrective actions taken during the course of assembly-level testing, integrated vehicle checkout and test, and mission operations. Although the main experiences described are problem oriented, the subsystem has performed satisfactorily in flight.

  12. Transforming Verbal Counts in Reports of Qualitative Descriptive Studies Into Numbers

    PubMed Central

    Chang, YunKyung; Voils, Corrine I.; Sandelowski, Margarete; Hasselblad, Vic; Crandell, Jamie L.

    2009-01-01

    Reports of qualitative studies typically do not offer much information on the numbers of respondents linked to any one finding. This information may be especially useful in reports of basic, or minimally interpretive, qualitative descriptive studies focused on surveying a range of experiences in a target domain, and its lack may limit the ability to synthesize the results of such studies with quantitative results in systematic reviews. Accordingly, the authors illustrate strategies for deriving plausible ranges of respondents expressing a finding in a set of reports of basic qualitative descriptive studies on antiretroviral adherence and suggest how the results might be used. These strategies have limitations and are never appropriate for use with findings from interpretive qualitative studies. Yet they offer a temporary workaround for preserving and maximizing the value of information from basic qualitative descriptive studies for systematic reviews. They show also why quantitizing is never simply quantitative. PMID:19448052

  13. Aerobic growth of Anoxybacillus pushchinoensis K1(T): emended descriptions of A. pushchinoensis and the genus Anoxybacillus

    NASA Technical Reports Server (NTRS)

    Pikuta, Elena; Cleland, David; Tang, Jane

    2003-01-01

    In this work, corrections are made to the descriptions of the species Anoxybacillus pushchinoensis corrig. and the genus ANOXYBACILLUS: Experiments to determine the relationship of A. pushchinoensis K1(T) to oxygen showed that it was capable of aerobic growth, but preferred to grow anaerobically. During aerobic growth, the redox indicator resazurin was reduced as a result of hydrogen gas production. The facultatively anaerobic nature of K1(T) was ascertained by cultivation in aerobic liquid medium, where growth began at the bottom of the tube. The anaerobic nature of K1(T) was also indicated by a negative catalase reaction. This work is submitted to correct the description of the species A. pushchinoensis from obligate anaerobe to aerotolerant anaerobe and to emend the description of the genus Anoxybacillus from obligate anaerobes or facultative anaerobes to aerotolerant anaerobes or facultative anaerobes.

  14. A Method for Transforming Existing Web Service Descriptions into an Enhanced Semantic Web Service Framework

    NASA Astrophysics Data System (ADS)

    Du, Xiaofeng; Song, William; Munro, Malcolm

    Web Services as a new distributed system technology has been widely adopted by industries in the areas, such as enterprise application integration (EAI), business process management (BPM), and virtual organisation (VO). However, lack of semantics in the current Web Service standards has been a major barrier in service discovery and composition. In this chapter, we propose an enhanced context-based semantic service description framework (CbSSDF+) that tackles the problem and improves the flexibility of service discovery and the correctness of generated composite services. We also provide an agile transformation method to demonstrate how the various formats of Web Service descriptions on the Web can be managed and renovated step by step into CbSSDF+ based service description without large amount of engineering work. At the end of the chapter, we evaluate the applicability of the transformation method and the effectiveness of CbSSDF+ through a series of experiments.

  15. Integration of nonthematic details in pictures and passages.

    PubMed

    Viera, C L; Homa, D L

    1991-01-01

    Nonthematic details in naturalistic scenes were manipulated to produce four stimulus versions: color photos, black-white copies, and elaborated and unelaborated line drawings (Experiment 1); analogous verbal descriptions of each visual version were produced for Experiment 2. In Experiment 1, two or three different versions of a scene were presented in the mixed condition; the same version of the scene was repeated either two or three times in the same condition, and a 1-presentation control condition was also included. In Experiment 2, the same presentation conditions were used across different groups of subjects who either viewed the pictures or heard the descriptions. An old/new recognition test was given in which the nonstudied versions of the studied items were used as foils. Higher false recognition performances for the mixed condition were found for the visual materials in both experiments, and in the second experiment the verbal materials produced equivalently high levels of false recognition for both same and mixed conditions. Additionally, in Experiment 2 the patterns of performances across material conditions were differentially affected by the manipulation of detail in the four stimulus versions. These differences across materials suggest that the integration of semantically consistent details across temporally separable presentations is facilitated when the stimuli do not provide visual/physical attributes to enhance discrimination of different presentations. Further, the evidence derived from the visual scenes in both experiments indicates that the semantic schema abstracted from a picture is not the sole mediator of recognition performance.

  16. Why Older Adults May Decline Offers of Post-Acute Care Services: A Qualitative Descriptive Study

    PubMed Central

    Sefcik, Justine S.; Ritter, Ashley Z.; Flores, Emilia J.; Nock, Rebecca H.; Chase, Jo-Ana D.; Bradway, Christine; Potashnik, Sheryl; Bowles, Kathryn H.

    2016-01-01

    The most common post-acute care (PAC) services available to patients after hospital discharge include home care, skilled nursing facilities, nursing homes, inpatient rehabilitation, and hospice. Patients who need PAC and receive services have better outcomes, however almost one-third of those offered services decline. Little research exists on PAC decision-making and why patients may decline services. This qualitative descriptive study explored the responses of thirty older adults to the question: “Can you, from the patient point of view, tell me why someone would not want post hospital care?” Three themes emerged. Participants may decline due to 1) previous negative experiences with PAC, or 2) a preference to be home. Some participants stated, “I'd be there” and would not decline services. Participants also discussed 3) why other patients might decline PAC which included patients’ past experiences, fear of the unknown, and preferences. Clinical implications include assessing patients’ knowledge and experience before providing recommendations. PMID:27964972

  17. Why older adults may decline offers of post-acute care services: A qualitative descriptive study.

    PubMed

    Sefcik, Justine S; Ritter, Ashley Z; Flores, Emilia J; Nock, Rebecca H; Chase, Jo-Ana D; Bradway, Christine; Potashnik, Sheryl; Bowles, Kathryn H

    The most common post-acute care (PAC) services available to patients after hospital discharge include home care, skilled nursing facilities, nursing homes, inpatient rehabilitation, and hospice. Patients who need PAC and receive services have better outcomes, however almost one-third of those offered services decline. Little research exists on PAC decision-making and why patients may decline services. This qualitative descriptive study explored the responses of thirty older adults to the question: "Can you, from the patient point of view, tell me why someone would not want post hospital care?" Three themes emerged. Participants may decline due to 1) previous negative experiences with PAC, or 2) a preference to be home. Some participants stated, "I'd be there" and would not decline services. Participants also discussed 3) why other patients might decline PAC which included patients' past experiences, lack of understanding/preconceived ideas, and preferences. Clinical implications include assessing patients' knowledge and experience before providing recommendations. Copyright © 2016 Elsevier Inc. All rights reserved.

  18. Evaluating models of object-decision priming: evidence from event-related potential repetition effects.

    PubMed

    Soldan, Anja; Mangels, Jennifer A; Cooper, Lynn A

    2006-03-01

    This study was designed to differentiate between structural description and bias accounts of performance in the possible/impossible object-decision test. Two event-related potential (ERP) studies examined how the visual system processes structurally possible and impossible objects. Specifically, the authors investigated the effects of object repetition on a series of early posterior components during structural (Experiment 1) and functional (Experiment 2) encoding and the relationship of these effects to behavioral measures of priming. In both experiments, the authors found repetition enhancement of the posterior N1 and N2 for possible objects only. In addition, the magnitude of the N1 repetition effect for possible objects was correlated with priming for possible objects. Although the behavioral results were more ambiguous, these ERP results fail to support bias models that hold that both possible and impossible objects are processed similarly in the visual system. Instead, they support the view that priming is supported by a structural description system that encodes the global 3-dimensional structure of an object.

  19. Catalog of Viking mission data

    NASA Technical Reports Server (NTRS)

    Vostreys, R. W. (Editor)

    1978-01-01

    This catalog announces the present/expected availability of scientific data acquired by the Viking missions and contains descriptions of the Viking spacecraft, experiments, and data sets. An index is included listing the team leaders and team members for the experiments. Information on NSSDC facilities and ordering procedures, and a list of acronyms and abbreviations are included in the appendices.

  20. "Picturing the Past": Farm Women on the Grasslands Frontier, 1850-1900

    ERIC Educational Resources Information Center

    Sundberg, Sara Brooks

    2010-01-01

    This study analyzes fifty-two accounts by pioneer farm women from a less well known part of the U.S. grasslands, the Minnesota prairie between 1850 and 1900. Using Hamlin Garland's frequently cited description of his mother's experience as a baseline for comparison to Minnesota farm women's experiences, this study finds that pioneer farm women…

  1. Scaling up School-Wide Positive Behavioral Interventions and Supports: Experiences of Seven States with Documented Success

    ERIC Educational Resources Information Center

    Horner, Robert H.; Kincaid, Donald; Sugai, George; Lewis, Timothy; Eber, Lucille; Barrett, Susan; Dickey, Celeste Rossetto; Richter, Mary; Sullivan, Erin; Boezio, Cyndi; Algozzine, Bob; Reynolds, Heather; Johnson, Nanci

    2014-01-01

    Scaling of evidence-based practices in education has received extensive discussion but little empirical evaluation. We present here a descriptive summary of the experience from seven states with a history of implementing and scaling School-Wide Positive Behavioral Interventions and Supports (SWPBIS) over the past decade. Each state has been…

  2. Perspectives on Teacher Quality: Bilingual Education and ESL Teacher Certification, Test-Taking Experiences, and Instructional Practices

    ERIC Educational Resources Information Center

    Lemberger, Nancy; Reyes-Carrasquillo, Angela

    2011-01-01

    This descriptive exploratory study looked at the certification process, test-taking experiences, and instructional practices of a group of graduate bilingual education (BE) and English-as-a-Second-Language (ESL) teachers to understand why some had problems passing teacher certification tests after completing their degrees. The study surveyed 63 BE…

  3. Education and Experience in Engineering, the E3 Program: Program Details.

    ERIC Educational Resources Information Center

    Illinois Inst. of Tech., Chicago.

    Presented is a description of the Education and Experience in Engineering (E3) Program at the Illinois Institute of Technology. Included are the objectives, how the program works, faculty, dissemination of E3 information, integration of science and technology into the E3 program, and the integration of liberal arts and engineering. A chapter is…

  4. The Experiences of Alumni Adolescents on the Contribution of a Youth Opportunities Programme

    ERIC Educational Resources Information Center

    Wilson, Lizane; Gouws, Leanna; Nienaber, Alida W.

    2014-01-01

    This article focuses on the experiences of alumni adolescents on the contribution of a Youth Opportunities Programme, a non-profit after-school education programme presented in Namibia. A qualitative descriptive design was used to provide insight into the contribution of this programme. Five focus groups were conducted with 32 participants. The…

  5. Experiences of Followers in the Development of the Leader-Follower Relationship in Long-Term Health Care: A Phenomenological Study

    ERIC Educational Resources Information Center

    Lucia, David

    2010-01-01

    This descriptive phenomenological study explored the perceptions and experiences of followers in the development of the leader-follower relationship, within a long-term health care environment. This study is also framed within the disciplinary context of human resource development (HRD). This study addressed the research question, "During your…

  6. The Role of Sensitizing Experiences in Music Performance Anxiety in Adolescent Musicians

    ERIC Educational Resources Information Center

    Osborne, Margaret S.; Kenny, Dianna T.

    2008-01-01

    Aversive performance incidents play a role in the development of some anxiety disorders. The role of sensitizing experiences in the development of music performance anxiety (MPA) in adolescent music students has not yet been explored. Two-hundred-and-ninety-eight music students were asked to provide written descriptions of their worst performance,…

  7. Does illness experience influence the recall of medical information?

    PubMed Central

    Krishnan, B; Glazebrook, C; Smyth, A

    1998-01-01

    Recall of a storyboard description of an unfamiliar illness was assessed in 66 healthy children and 40 children with chronic illness (cystic fibrosis or asthma). A significant interaction between verbal intelligence quotient and illness experience (p < 0.001) suggested that more able sick children may be resistant to learning new medical information. 

 PMID:10210998

  8. A General Music Experience in China: Reflections and Lesson Ideas

    ERIC Educational Resources Information Center

    Whitcomb, Rachel; Berger, Linda M.; Schmidt, Catherine

    2011-01-01

    In this article, the authors share their recent experiences with a fourth grade general music classroom in China as members of the "People-to-People Ambassador Program". They provide a description of the types of musical activities they observed at Aiju Primary School in Shanghai in December 2009 by sharing the content of one specific…

  9. Backscatter for Ice Sheet 2 Growth Phase in the Winter 1994 Winter Sea Ice Experiment

    NASA Technical Reports Server (NTRS)

    Nghiem, S. V.

    1996-01-01

    None. This is raw data from a data set taken during the CRRELEX94 experiment. The data are polarimetric C-band radar measurements of a saline ice sheet grown in the outdoor Geophysical Research Facility at the Cold Regions Research and Engineering Lab. See references for other descriptions of data.

  10. Soda Pop Fizz-ics

    ERIC Educational Resources Information Center

    Coffey, Tonya

    2008-01-01

    This paper is a brief summary of an "open-ended" physics experiment that gave my students a glimpse of what real physics research is like. They found it to be both fun and challenging. The subject of the experiment is the well-known Diet Coke and Mentos reaction. A more detailed description of the experimental results has been published elsewhere.

  11. A Teacher's Retrospective View of the Syrian Educational System

    ERIC Educational Resources Information Center

    Zarad, Rami Abu

    2014-01-01

    This is a descriptive, as much as an interpretive, article about the Syrian educational system and the first-hand experience of an EFL (English as a Foreign Language) practitioner describing the system from within, as much as from without. "From within" because it is based on observations derived from his own teaching experience at a…

  12. A Graphical Simulation of Vapor-Liquid Equilibrium for Use as an Undergraduate Laboratory Experiment and to Demonstrate the Concept of Mathematical Modeling.

    ERIC Educational Resources Information Center

    Whitman, David L.; Terry, Ronald E.

    1985-01-01

    Demonstrating petroleum engineering concepts in undergraduate laboratories often requires expensive and time-consuming experiments. To eliminate these problems, a graphical simulation technique was developed for junior-level laboratories which illustrate vapor-liquid equilibrium and the use of mathematical modeling. A description of this…

  13. A PSYCHOLINGUISTIC EXPERIMENT IN FOREIGN-LANGUAGE TEACHING. MCGRAW-HILL SERIES IN PSYCHOLOGY.

    ERIC Educational Resources Information Center

    SCHERER, GEORGE A.C.; WERTHEIMER, MICHAEL

    A DETAILED DESCRIPTION OF A LARGE SCALE, TWO-YEAR EXPERIMENTAL STUDY COMPARING AN AUDIOLINGUAL WITH A TRADITIONAL GRAMMAR-TRANSLATION METHOD OF TEACHING FOREIGN LANGUAGES IS PRESENTED. THIS EXPERIMENT WAS CARRIED OUT WITH STUDENTS IN FIRST- AND SECOND-YEAR GERMAN CLASSES AT THE UNIVERSITY OF COLORADO FROM 1960 TO 1962. RESULTS OF TESTS SEEM TO…

  14. Behavioral Experiments in the Treatment of Paranoid Schizophrenia: A Single Case Study

    ERIC Educational Resources Information Center

    Hagen, Roger; Nordahl, Hans M.

    2008-01-01

    Since the first description of cognitive therapy of paranoid delusions appeared in the literature, the empirical support for cognitive behavioral therapy in treating psychotic symptoms has been widely established. The aim of the present case study is to show how the behavioral experiment can be used as a powerful tool to change delusional thinking…

  15. Experimental data from coastal diffusion tests. [Smoke diffusion over coastal waters

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Raynor, G S; Brown, R M; SethuRaman, S

    1976-10-01

    Data are reported from a series of seven experiments on the diffusion of smoke plumes over northeast Atlantic Ocean coastal waters in response to wind fluctuations and other meteorological variables. A qualitative description of smoke behavior during each experiment is included and photographs of the smoke are included to illustrate the type of diffusion observed. (CH)

  16. Japanese Students' Academic and Social Experiences at a Predominantly White University in the United States

    ERIC Educational Resources Information Center

    Sato, Takahiro; Hodge, Samuel R.

    2013-01-01

    The purpose of this study was to explore Japanese students' views about their academic and social experiences at majority White university in the United States (US). The six participants were Japanese undergraduate students (4 males, 2 females) with various academic majors. This descriptive qualitative study was situated in the concept of an…

  17. Tests of Branch Splitting and Branch-Splitting Independence in Allais Paradoxes with Positive and Mixed Consequences

    ERIC Educational Resources Information Center

    Birnbaum, Michael H.

    2007-01-01

    Four experiments with 1391 participants compared descriptive models of risky decision making. The first replicated and extended evidence refuting cumulative prospect theory (CPT) as an explanation of Allais paradoxes. The second and third experiments used a new design to unconfound tests of upper and lower coalescing, which allows tests of…

  18. Students' with Disabilities Experience and Description of Integrating into an Academic Community in Higher Education: A Phenomenological Study

    ERIC Educational Resources Information Center

    Randolph, Terresa Shavawn

    2012-01-01

    Using a qualitative design, this study offers an understanding of the lived experience of students with attention deficit hyperactive disorder (ADHD), learning disability (LD), or traumatic brain injuries (TBI) who are integrating into an academic community within a higher education institution located in the southern United States. Additionally,…

  19. Political Involvement. Community Involvement/Career Education: An Experience-based Social Studies Program, Volume III.

    ERIC Educational Resources Information Center

    Kyle, James; And Others

    This collection of materials and ideas is designed for the high school student who wants to try to influence society. The guide provides background information and descriptions of experience-based learning activities for use by students as they explore political involvement opportunities in their communities. The purposes of the materials are to…

  20. Integrating Evidence-Based Practice into a Therapeutic Exercise Course: Real-Time Patient Experience

    ERIC Educational Resources Information Center

    Popp, Jennifer K.

    2014-01-01

    Athletic training students need real-time patient experiences in order to transfer the knowledge and skills learned in the classroom into clinical practice. The objective is to present a description of an assignment that could be incorporated into a therapeutic exercise course giving the student an opportunity to evaluate a patient, design a…

Top