Science.gov

Sample records for gain uniformity test

  1. Research on gain uniformity of the laser non-imaging rod amplifier

    NASA Astrophysics Data System (ADS)

    Wu, Yongzhong; Zhu, Jianqiang

    2015-08-01

    According to the problem of gain medium cross section high illumination and non-uniformity, which is caused by the laser rod amplifier non-imaging pump style. Orthogonal test design method is used to research the effect of absorption coefficient, gain medium radius, number of xenon lamps, center distance of xenon lamps and gain medium on gain uniformity. The rod amplifier which is made up by the above four elements, its gain medium cross section illumination distribution is simulated by ASAP. The results show that center distance of xenon lamps and gain medium, number of xenon lamps have very little influence on the gain uniformity. When absorption coefficient equal to 5.1 cm-1, gain uniformity will reach the optimum. Under the circumstance of other three elements are equal, the bigger is the gain radius, the smaller slope reflection curve, and the better gain uniformity.

  2. Uniform Test Assembly

    ERIC Educational Resources Information Center

    Belov, Dmitry I.

    2008-01-01

    In educational practice, a test assembly problem is formulated as a system of inequalities induced by test specifications. Each solution to the system is a test, represented by a 0-1 vector, where each element corresponds to an item included (1) or not included (0) into the test. Therefore, the size of a 0-1 vector equals the number of items "n"…

  3. Uniform peanut performance test 2013

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) are designed to evaluate the commercial potential of advanced breeding peanut lines not formally released. The tests are performed in ten locations across the peanut production belt. In this study, 2 controls and 13 entries were evaluated at 9 locations....

  4. Uniform peanut performance test 2015

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) are designed to evaluate the commercial potential of advanced breeding peanut lines not formally released. The tests are performed in ten locations across the peanut production belt. In this study, 2 controls and 13 entries were evaluated at 9 locations....

  5. Uniform Peanut Performance Tests 2009

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) are designed to evaluate the commercial potential of advanced breeding peanut lines not formally released. The tests are performed in ten locations across the peanut production belt. In this study, there were 2 controls, 3 Florida lines, 6 Georgia lines,...

  6. Uniform Peanut Performance Tests 2007

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) are designed to evaluate the commercial potential of advanced breeding peanut lines not formally released. The tests are performed in ten locations across the peanut production belt. In this study, there were 2 controls, 3 Florida lines, 7 Georgia lines,...

  7. Uniform Peanut Performance Tests 2010

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) are designed to evaluate the commercial potential of advanced breeding peanut lines not formally released. The tests are performed in ten locations across the peanut production belt. In this study, there were 2 controls, 3 Florida lines, 4 Georgia lines,...

  8. Uniform Peanut Performance Tests 2011

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) are designed to evaluate the commercial potential of advanced breeding peanut lines not formally released. The tests are performed in ten locations across the peanut production belt. In this study, there were 2 controls, 3 Florida lines, 3 Georgia lines,...

  9. Uniform Peanut Performance Tests 2008

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) are designed to evaluate the commercial potential of advanced breeding peanut lines not formally released. The tests are performed in ten locations across the peanut production belt. In this study, there were 2 controls, 3 Florida lines, 6 Georgia lines,...

  10. Uniform Peanut Performance Tests 2012

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) were established in 1973 through an informal arrangement among cooperating scientists involving seven major peanut-producing states. In 1995, plant material transfer agreements were also accepted among all cooperators in the UPPT. The year 2012 completed...

  11. Testing for uniformity in multidimensional data.

    PubMed

    Smith, S P; Jain, A K

    1984-01-01

    Testing for uniformity in multidimensional data is important in exploratory pattern analysis, statistical pattern recognition, and image processing. The goal of this paper is to determine whether the data follow the uniform distribution over some compact convex set in K-dimensional space, called the sampling window. We first provide a simple, computationally efficient method for generating a uniformly distributed sample over a set which approximates the convex hul of the data. We then test for uniformity by comparing this generated sample to the data by using Friedman-Rafsky's minimal spanning tree (MST) based test. Experiments with both simulated and real data indicate that this MST-based test is useful in deciding if data are uniform.

  12. Desert Test Site Uniformity Analysis

    NASA Technical Reports Server (NTRS)

    Kerola, Dana X.; Bruegge, Carol J.

    2009-01-01

    Desert test sites such as Railroad Valley (RRV) Nevada, Egypt-1, and Libya-4 are commonly targeted to assess the on-orbit radiometric performance of sensors. Railroad Valley is used for vicarious calibration experiments, where a field-team makes ground measurements to produce accurate estimates of top-of-atmosphere (TOA) radiances. The Sahara desert test sites are not instrumented, but provide a stable target that can be used for sensor cross-comparisons, or for stability monitoring of a single sensor. These sites are of interest to NASA's Atmospheric Carbon Observation from Space (ACOS) and JAXA's Greenhouse Gas Observation SATellite (GOSAT) programs. This study assesses the utility of these three test sites to the ACOS and GOSAT calibration teams. To simulate errors in sensor-measured radiance with pointing errors, simulated data have been created using MODIS Aqua data. MODIS data are further utilized to validate the campaign data acquired from June 22 through July 5, 2009. The first GOSAT vicarious calibration experiment was conducted during this timeframe.

  13. Compression gain of spin wave signals in a magnonic YIG waveguide with thermal non-uniformity

    NASA Astrophysics Data System (ADS)

    Kolokoltsev, O.; Gómez-Arista, Ivan; Qureshi, N.; Acevedo, A.; Ordóñez-Romero, César L.; Grishin, A.

    2015-03-01

    We report on the observation of the compression gain of the signals carried by surface spin waves (MSSWs) in yittrium iron garnet films as a result of non-uniform optical heating of the spin wave medium. Efficient gain takes place if a frequency downshift of the spin wave spectrum induced by the heating is compensated by the corresponding non-uniformity of the bias magnetic field. It is proposed that the effect can be understood in part as an interaction between spin waves and a thermally induced potential well in the sample.

  14. Image intensifier gain uniformity improvements in sealed tubes by selective scrubbing

    DOEpatents

    Thomas, Stanley W.

    1995-01-01

    The gain uniformity of sealed microchannel plate image intensifiers (MCPIs) is improved by selectively scrubbing the high gain sections with a controlled bright light source. Using the premise that ions returning to the cathode from the microchannel plate (MCP) damage the cathode and reduce its sensitivity, a HeNe laser beam light source is raster scanned across the cathode of a microchannel plate image intensifier (MCPI) tube. Cathode current is monitored and when it exceeds a preset threshold, the sweep rate is decreased 1000 times, giving 1000 times the exposure to cathode areas with sensitivity greater than the threshold. The threshold is set at the cathode current corresponding to the lowest sensitivity in the active cathode area so that sensitivity of the entire cathode is reduced to this level. This process reduces tube gain by between 10% and 30% in the high gain areas while gain reduction in low gain areas is negligible.

  15. Image intensifier gain uniformity improvements in sealed tubes by selective scrubbing

    DOEpatents

    Thomas, S.W.

    1995-04-18

    The gain uniformity of sealed microchannel plate image intensifiers (MCPIs) is improved by selectively scrubbing the high gain sections with a controlled bright light source. Using the premise that ions returning to the cathode from the microchannel plate (MCP) damage the cathode and reduce its sensitivity, a HeNe laser beam light source is raster scanned across the cathode of a microchannel plate image intensifier (MCPI) tube. Cathode current is monitored and when it exceeds a preset threshold, the sweep rate is decreased 1000 times, giving 1000 times the exposure to cathode areas with sensitivity greater than the threshold. The threshold is set at the cathode current corresponding to the lowest sensitivity in the active cathode area so that sensitivity of the entire cathode is reduced to this level. This process reduces tube gain by between 10% and 30% in the high gain areas while gain reduction in low gain areas is negligible. 4 figs.

  16. Measurement of basic characteristics and gain uniformity of a triple GEM detector

    NASA Astrophysics Data System (ADS)

    Patra, Rajendra Nath; Singaraju, Rama N.; Biswas, Saikat; Ahammed, Zubayer; Nayak, Tapan K.; Viyogi, Yogendra P.

    2017-08-01

    Large area Gas Electron Multiplier (GEM) detectors have been the preferred choice for tracking devices in major nuclear and particle physics experiments. Uniformity over surface of the detector in terms of gain, energy resolution and efficiency is crucial for the optimum performance of these detectors. In the present work, detailed performance study of a 10×10 cm2 triple GEM detector operated using Ar and CO2 gas mixtures in proportions of 70:30 and 90:10, has been made by making a voltage scan of the efficiency with 106Ru-Rh β-source and cosmic rays. The gain and energy resolution of the detector were studied using the X-ray spectrum of 55Fe source. The uniformity of the detector has been investigated by dividing the detector in 7×7 zones and measuring the gain and energy resolution at the centre of each zone. The variations of the gain and energy resolution have been found to be 8.8% and 6.7%, respectively. These studies are essential to characterise GEM detectors before their final use in the experiments.

  17. Uniformity testing: assessment of a centralized web-based uniformity analysis system.

    PubMed

    Klempa, Meaghan C

    2011-06-01

    Uniformity testing is performed daily to ensure adequate camera performance before clinical use. The aim of this study is to assess the reliability of Beth Israel Deaconess Medical Center's locally built, centralized, Web-based uniformity analysis system by examining the differences between manufacturer and Web-based National Electrical Manufacturers Association integral uniformity calculations measured in the useful field of view (FOV) and the central FOV. Manufacturer and Web-based integral uniformity calculations measured in the useful FOV and the central FOV were recorded over a 30-d period for 4 cameras from 3 different manufacturers. These data were then statistically analyzed. The differences between the uniformity calculations were computed, in addition to the means and the SDs of these differences for each head of each camera. There was a correlation between the manufacturer and Web-based integral uniformity calculations in the useful FOV and the central FOV over the 30-d period. The average differences between the manufacturer and Web-based useful FOV calculations ranged from -0.30 to 0.099, with SD ranging from 0.092 to 0.32. For the central FOV calculations, the average differences ranged from -0.163 to 0.055, with SD ranging from 0.074 to 0.24. Most of the uniformity calculations computed by this centralized Web-based uniformity analysis system are comparable to the manufacturers' calculations, suggesting that this system is reasonably reliable and effective. This finding is important because centralized Web-based uniformity analysis systems are advantageous in that they test camera performance in the same manner regardless of the manufacturer.

  18. Uniform Tests of File Converters Using Unit Cubes

    DTIC Science & Technology

    2015-03-01

    1,000,000,000 mm3. The second part would be to test each face of the cube using the rtarea command, which finds the exposed surface area of all of the...Uniform Tests of File Converters Using Unit Cubes by Steven J Nichols ARL-CR-0770 March 2015 Under contract...March 2015 Uniform Tests of File Converters Using Unit Cubes Steven J Nichols Survivability/Lethality Analysis Directorate, ARL

  19. GD SDR Automatic Gain Control Characterization Testing

    NASA Technical Reports Server (NTRS)

    Nappier, Jennifer M.; Briones, Janette C.

    2013-01-01

    The General Dynamics (GD) S-Band software defined radio (SDR) in the Space Communications and Navigation (SCAN) Testbed on the International Space Station (ISS) will provide experimenters an opportunity to develop and demonstrate experimental waveforms in space. The GD SDR platform and initial waveform were characterized on the ground before launch and the data will be compared to the data that will be collected during on-orbit operations. A desired function of the SDR is to estimate the received signal to noise ratio (SNR), which would enable experimenters to better determine on-orbit link conditions. The GD SDR does not have an SNR estimator, but it does have an analog and a digital automatic gain control (AGC). The AGCs can be used to estimate the SDR input power which can be converted into a SNR. Tests were conducted to characterize the AGC response to changes in SDR input power and temperature. This purpose of this paper is to describe the tests that were conducted, discuss the results showing how the AGCs relate to the SDR input power, and provide recommendations for AGC testing and characterization.

  20. GD SDR Automatic Gain Control Characterization Testing

    NASA Technical Reports Server (NTRS)

    Nappier, Jennifer M.; Briones, Janette C.

    2013-01-01

    The General Dynamics (GD) S-Band software defined radio (SDR) in the Space Communications and Navigation (SCAN) Testbed on the International Space Station (ISS) will provide experimenters an opportunity to develop and demonstrate experimental waveforms in space. The GD SDR platform and initial waveform were characterized on the ground before launch and the data will be compared to the data that will be collected during on-orbit operations. A desired function of the SDR is to estimate the received signal to noise ratio (SNR), which would enable experimenters to better determine on-orbit link conditions. The GD SDR does not have an SNR estimator, but it does have an analog and a digital automatic gain control (AGC). The AGCs can be used to estimate the SDR input power which can be converted into a SNR. Tests were conducted to characterize the AGC response to changes in SDR input power and temperature. This purpose of this paper is to describe the tests that were conducted, discuss the results showi ng how the AGCs relate to the SDR input power, and provide recommendations for AGC testing and characterization.

  1. A novel compensation method for the anode gain non-uniformity of multi-anode photomultiplier tubes.

    PubMed

    Lee, Chan Mi; Il Kwon, Sun; Ko, Guen Bae; Ito, Mikiko; Yoon, Hyun Suk; Lee, Dong Soo; Hong, Seong Jong; Lee, Jae Sung

    2012-01-07

    The position-sensitive multi-anode photomultiplier tube (MA-PMT) is widely used in high-resolution scintillation detectors. However, the anode gain nonuniformity of this device is a limiting factor that degrades the intrinsic performance of the detector module. The aim of this work was to develop a gain compensation method for the MA-PMT and evaluate the resulting enhancement in the performance of the detector. The method employs a circuit that is composed only of resistors and is placed between the MA-PMT and a resistive charge division network (RCN) used for position encoding. The goal of the circuit is to divide the output current from each anode, so the same current flows into the RCN regardless of the anode gain. The current division is controlled by the combination of a fixed-value series resistor with an output impedance that is much larger than the input impedance of the RCN, and a parallel resistor, which detours part of the current to ground. PSpice simulations of the compensation circuit and the RCN were performed to determine optimal values for the compensation resistors when used with Hamamatsu H8500 MAPMTs. The intrinsic characteristics of a detector module consisting of this MA-PMT and a lutetium-gadolinium-oxyorthosilicate (LGSO) crystal array were tested with and without the gain compensation method. In simulation, the average coefficient of variation and max/min ratio decreased from 15.7% to 2.7% and 2.0 to 1.2, respectively. In the flood map of the LGSO-H8500 detector, the uniformity of the photopeak position for individual crystals and the energy resolution were much improved. The feasibility of the method was shown by applying it to an octagonal prototype positron emission tomography scanner.

  2. Measurement Uncertainty Within the Uniform Engine Test Programme

    DTIC Science & Technology

    1989-05-01

    Also, included on the figures are the results for tBCC corrected to standard sea level Conditions ( Test Condition I). There is felt to be sufficient...AD-A219 033 IL307CpAGARD-AG-0 AGARDograph No. 307 Measurement Uncertainty Within the Uniform Engine Test Programme -D ’ ?T’UIQN ST.’ITMENr A MAR 0 71...THE UNIFORM ENGINE TEST PROGRAMME Report of the Sub-Group on Uncertainty Assessment Edited by J.PK. Vleghert National Aerospace Laboratory Anthony

  3. Development and application of a uniform testing procedure for griddles

    SciTech Connect

    Saltmarch, M. . Dept. of Nutrition and Food Services)

    1989-12-01

    This research report compares the performance of two single-sided, thermostatically controlled gas griddles when tested in accordance with a Uniform Testing Procedure (UTP) developed by the contractor, Pacific Gas and Electric Company (PG E). Variables reported for each griddle include preheat time and energy consumption, idle-energy consumption, cooking-energy consumption, cooking capacity, cooking-energy efficiency, water-boil efficiency, and the temperature uniformity of the cooking surface. The application of synthetic food models, as a test food alternative to hamburger patties, was investigated. The energy performance of the griddles when tested under controlled, laboratory-style conditions is compared to the performance of the same griddles used for menu production at PG E's Learning Center in San Ramon, California. The UTP for griddles developed in this research project is documented in this report. The UTP has been submitted to the ASTM Committee F-26 on Food Service Equipment for consideration as an official ASTM Test Method.

  4. [Dependence of uniformity on the radionuclide in SPECT: test methods].

    PubMed

    Kalnischke, Heiko; Grebe, Gerhard; Zander, Andreas; Munz, Dieter Ludwig; Geworski, Lilli

    2004-01-01

    The aim of this study was to investigate test methods to clarify whether the non-uniformity of a gamma camera depends on individual radionuclides, and whether it is necessary to measure a separate correction matrix for each radionuclide used in single photon emission computed tomography (SPECT). Two methods were devised to verify the nuclide-dependence of the gamma camera. In order to test the energy correction of the detectors, the first approach was based on the evaluation of the intrinsic non-uniformity and on the production of images with asymmetrical energy window. The second method was based on the production of correction matrices for different radionuclides, as well as on the subsequent application to phantom data that were also generated with different radionuclides. The investigation of a dualhead gamma camera produced the same results with both methods. One detector head was found to be weakly dependent on the radionuclide, due to the insufficient quality of energy correction. In this case, the phantom or patient data should be corrected using a uniformity correction matrix measured with the same radionuclide. The second detector remained nuclide-independent; in this case the uniformity correction matrix acquired for only one radionuclide was sufficient.

  5. Analysis of Non-Uniform Gain for Control of a Deformable Mirror in an Adaptive-Optics System

    DTIC Science & Technology

    2008-03-01

    ERFb ’,b,’... _20071218.mat’]) % addpath ([drive ,’:\\K drive\\NUGE Thesis \\07 - NUGE\\Thesis M-Scripts... \\Non -Uniform Gain Experiment\\NUGE\\NUGE Data...load([’T’,Turb ,’g’,Gmap ,’ ERFb ’,b,’_20071218.mat ’]) load ActMask.mat % Has a 25 x 25 ActMask 35 subap_x = 12; subap_y = 12; %% Fs = 4000; % f

  6. Effects of non-uniform distributions of gain and loss in photonic crystals

    NASA Astrophysics Data System (ADS)

    Cerjan, Alexander; Fan, Shanhui

    2016-12-01

    We present a {k}\\cdot {p} theory of photonic crystals containing gain and loss in which the gain and loss are added to separate primitive cells of the underlying Hermitian system, thereby creating a supercell photonic crystal. We show that the supercell bands of this system can merge outward from the degenerate contour formed from folding the bands of the underlying Hermitian system into the supercell Brillouin zone, but that other accidental degeneracies in the band structure of the underlying Hermitian system do not yield band merging behavior. Finally, we show that the modal coupling matrix in PhCs with balanced gain and loss is trace-less, and thus the imaginary components of the eigenvalues can only move relative to one another as the strength of the gain and loss is varied, without any collective motion.

  7. Insights Gained from Testing Alternate Cell Designs

    SciTech Connect

    J. E. O'Brien; C. M. Stoots; J. S. Herring; G. K. Housley; M. S. Sohal; D. G. Milobar; Thomas Cable

    2009-09-01

    The Idaho National Laboratory (INL) has been researching the application of solid-oxide electrolysis cell for large-scale hydrogen production from steam over a temperature range of 800 to 900ºC. The INL has been testing various solid oxide cell designs to characterize their electrolytic performance operating in the electrolysis mode for hydrogen production. Some results presented in this report were obtained from cells, initially developed by the Forschungszentrum Jülich and now manufactured by the French ceramics firm St. Gobain. These cells have an active area of 16 cm2 per cell. They were initially developed as fuel cells, but are being tested as electrolytic cells in the INL test stands. The electrolysis cells are electrode-supported, with ~10 µm thick yttria-stabilized zirconia (YSZ) electrolytes, ~1400 µm thick nickel-YSZ steam-hydrogen electrodes, and manganite (LSM) air-oxygen electrodes. The experiments were performed over a range of steam inlet mole fractions (0.1 to 0.6), gas flow rates, and current densities (0 to 0.6 A/cm2). Steam consumption rates associated with electrolysis were measured directly using inlet and outlet dewpoint instrumentation. On a molar basis, the steam consumption rate is equal to the hydrogen production rate. Cell performance was evaluated by performing DC potential sweeps at 800, 850, and 900°C. The voltage-current characteristics are presented, along with values of area-specific resistance as a function of current density. Long-term cell performance is also assessed to evaluate cell degradation. Details of the custom single-cell test apparatus developed for these experiments are also presented. NASA, in conjunction with the University of Toledo, has developed another fuel cell concept with the goals of reduced weight and high power density. The NASA cell is structurally symmetrical, with both electrodes supporting the thin electrolyte and containing micro-channels for gas diffusion. This configuration is called a bi

  8. Genetic Gains Through Testing and Crossing Longleaf Pine Plus Trees

    Treesearch

    Calvin F. Bey; E. Bayne Snyder

    1978-01-01

    A progeny test of 226 superior tree selections from nine geographic sources across the South confirmed earlier results that showed the Gulf Coast source superior in survival and growth. Family variation within a region was large and provided additional genetic gain. Control-pollinated tests of elite x elite trees yielded even more gains. Progeny of the elite x elite...

  9. Predicting FCI gain with a nonverbal intelligence test

    NASA Astrophysics Data System (ADS)

    Semak, M. R.; Dietz, R. D.; Pearson, R. H.; Willis, C. W.

    2013-01-01

    We have administered both a commercial, nonverbal intelligence test (the GAMA) and Lawson's Classroom Test of Scientific Reasoning to students in two introductory physics classes to determine if either test can successfully predict normalized gains on the Force Concept Inventory. Since gain on the FCI is known to be related to gender, we adopted a linear model with gain on the FCI as the dependent variable and gender and a test score as the independent variables. We found that the GAMA score did not predict a significant amount of variation beyond gender. Lawson's test, however, did predict a small but significant variation beyond gender. When simple linear regressions were run separately for males and females with the Lawson score as a predictor, we found that the Lawson score did not significantly predict gains for females but was a marginally significant predictor for males.

  10. MSFC solar simulator test plane uniformity measurement. [for testing solar collectors

    NASA Technical Reports Server (NTRS)

    Griner, D. B.

    1976-01-01

    The equipment and procedure used to measure the test plane uniformity produced by the MSFC 405 lamp solar simulator array are described along with details of the computer program used to analyze the measurement data. The results of the first measurement show the uniformity not to be as good as expected. The best uniformity obtained had a standared deviation of 4 percent with peak-to-peak values of + or - 11 percent.

  11. High-Stakes Testing Hasn't Brought Education Gains

    ERIC Educational Resources Information Center

    Dianis, Judith Browne; Jackson, John H.; Noguera, Pedro

    2015-01-01

    The only thing that more testing will tell us is what we already know: The schools that disadvantaged children attend are not being given the supports necessary to produce achievement gains. Students cannot be tested out of poverty, and while NCLB did take us a step forward by requiring schools to produce evidence that students were learning, it…

  12. High-Stakes Testing Hasn't Brought Education Gains

    ERIC Educational Resources Information Center

    Dianis, Judith Browne; Jackson, John H.; Noguera, Pedro

    2015-01-01

    The only thing that more testing will tell us is what we already know: The schools that disadvantaged children attend are not being given the supports necessary to produce achievement gains. Students cannot be tested out of poverty, and while NCLB did take us a step forward by requiring schools to produce evidence that students were learning, it…

  13. Testing of next-generation nonlinear calibration based non-uniformity correction techniques using SWIR devices

    NASA Astrophysics Data System (ADS)

    Lovejoy, McKenna R.; Wickert, Mark A.

    2017-05-01

    A known problem with infrared imaging devices is their non-uniformity. This non-uniformity is the result of dark current, amplifier mismatch as well as the individual photo response of the detectors. To improve performance, non-uniformity correction (NUC) techniques are applied. Standard calibration techniques use linear, or piecewise linear models to approximate the non-uniform gain and off set characteristics as well as the nonlinear response. Piecewise linear models perform better than the one and two-point models, but in many cases require storing an unmanageable number of correction coefficients. Most nonlinear NUC algorithms use a second order polynomial to improve performance and allow for a minimal number of stored coefficients. However, advances in technology now make higher order polynomial NUC algorithms feasible. This study comprehensively tests higher order polynomial NUC algorithms targeted at short wave infrared (SWIR) imagers. Using data collected from actual SWIR cameras, the nonlinear techniques and corresponding performance metrics are compared with current linear methods including the standard one and two-point algorithms. Machine learning, including principal component analysis, is explored for identifying and replacing bad pixels. The data sets are analyzed and the impact of hardware implementation is discussed. Average floating point results show 30% less non-uniformity, in post-corrected data, when using a third order polynomial correction algorithm rather than a second order algorithm. To maximize overall performance, a trade off analysis on polynomial order and coefficient precision is performed. Comprehensive testing, across multiple data sets, provides next generation model validation and performance benchmarks for higher order polynomial NUC methods.

  14. Test-Anxiety Program and Test Gains with Nursing Classes

    ERIC Educational Resources Information Center

    Evans, Ginger; Ramsey, Gary; Driscoll, Richard

    2010-01-01

    Nursing programs can be highly stressful, and nursing students have been found to be more test-anxious than other students. The present investigation examines a practical program to reduce test-anxiety impairment and improve academic performance for a significant number of highly anxious nursing students. Incoming nursing students were screened…

  15. Loss/gain on ignition testing for HC-21C

    SciTech Connect

    De Vries, M.L.

    1994-12-12

    The HC-21C thermal stabilization process stabilizes reactive plutonium bearing material for long term storage. A Loss On Ignition (LOI) analysis is performed on all materials that are stabilized in the muffle furnaces prior to being stored in the vaults to ensure suitability for vault storage. The material is required to have a LOI of less than 1% (OSD-184-00013 Limit). The LOI analysis is performed to assure that all volatiles that could potentially pressurize the sealed containers over long periods of time, like water, have been removed. It is possible, while performing LOI analysis to see a Gain On Ignition (GOI) due to additional oxidation of materials. In the current stabilization campaign, two items processed have had a positive LOI or GOI result. One concern with a GOI is that the weight gain may actually be masking a weight loss. (Reference 15530-94-WSL-156). Other concerns with a GOI result are that the removal of the oxygen could create a vacuum in the product can causing it to collapse during long term storage or the oxidation of material would increase the volume of the solids potentially bulging or rupturing the product container. In the past, GOIs have been seen on items that were processed through Hoskin`s pot furnaces located in glovebox HA-21I. This test plan provides instruction to test causes of a GOI and to ensure the processed material with a GOI result will not cause a problem during long term storage. Product cans that are sampled for LOI and have results showing a gain of weight will be the test items.

  16. A Statistical Test of Uniformity in Solar Cycle Indices

    NASA Technical Reports Server (NTRS)

    Hathaway David H.

    2012-01-01

    Several indices are used to characterize the solar activity cycle. Key among these are: the International Sunspot Number, the Group Sunspot Number, Sunspot Area, and 10.7 cm Radio Flux. A valuable aspect of these indices is the length of the record -- many decades and many (different) 11-year cycles. However, this valuable length-of-record attribute has an inherent problem in that it requires many different observers and observing systems. This can lead to non-uniformity in the datasets and subsequent erroneous conclusions about solar cycle behavior. The sunspot numbers are obtained by counting sunspot groups and individual sunspots on a daily basis. This suggests that the day-to-day and month-to-month variations in these numbers should follow Poisson Statistics and be proportional to the square-root of the sunspot numbers themselves. Examining the historical records of these indices indicates that this is indeed the case - even with Sunspot Area and 10.7 cm Radio Flux. The ratios of the RMS variations to the square-root of the indices themselves are relatively constant with little variation over the phase of each solar cycle or from small to large solar cycles. There are, however, important step-like changes in these ratios associated with changes in observer and/or observer system. Here we show how these variations can be used to construct more uniform datasets.

  17. Uniform calibration of night vision goggles and test sets

    NASA Astrophysics Data System (ADS)

    Eppeldauer, George P.

    2007-10-01

    There are orders of magnitude differences between the ~0.1 % (k=2) uncertainty of NIST reference detector calibrations and the uncertainty of night vision (NV) goggle measurements. NIST developed a night vision radiometer calibration facility including NV radiometer transfer standards. The transfer standards, that propagate the radiance responsivity scale to the military primary standards laboratories, are calibrated against a NIST reference radiometer. The reference radiometer has been calibrated on the NIST Spectral Comparator Facility (SCF) for spectral power and irradiance responsivities. Spectral considerations are discussed to lower the uncertainties of the radiance responsivity scale transfer to the test sets and then to the goggles. Since direct determination of the final uncertainties in goggle calibrations and measurements is difficult, models have been made to estimate the most important uncertainty components based on individual spectral measurements of the applied source distributions and radiometer spectral responsivities. It is also shown, that because of source spectral mismatch problems, the goggle measurement uncertainty at applications can be much higher than at calibration. A suggestion is being made to mimic the no-moon (stars only) night sky radiation distribution using several LEDs in the test-sets to decrease the large spectral mismatch errors. A broad-band correction factor has been developed to further decrease calibration uncertainty when the goggles to be used have different spectral responsivities than the standard. Geometrical considerations to optimize the radiance measurement angle and the out-of-target blocking are also discussed to decrease the uncertainty in the radiance responsivity transfer.

  18. Field Test of Room-to-Room Uniformity of Ventilation Air Distribution in Two New Houses

    SciTech Connect

    Hendron, Robert; Anderson, Ren; Barley, Dennis; Rudd, Armin; Townsend, Aaron; Hancock, Ed

    2006-12-01

    This report describes a field test to characterize the uniformity of room-to-room ventilation air distribution under various operating conditions by examining multi-zone tracer gas decay curves and calculating local age-of-air.

  19. Testing for uniformity of ultra-high energy cosmic ray arrival directions

    NASA Astrophysics Data System (ADS)

    Ivanov, A. A.

    2016-04-01

    Arrival directions of ultra-high energy cosmic rays (UHECRs) exhibit mainly an isotropic distribution with some small deviations in particular energy bins. In this paper, the Yakutsk array data are tested for circular uniformity of arrival directions in right ascension (RA) using two methods appropriate for the energy ranges below and above 1018 eV. No statistically significant deviation from uniformity is found in the arrival directions of cosmic rays (CRs) detected within the observation period 1974-2000.

  20. Score Gains on "g"-Loaded Tests: No "g"

    ERIC Educational Resources Information Center

    te Nijenhuis, Jan; van Vianen, Annelies E. M.; van der Flier, Henk

    2007-01-01

    IQ scores provide the best general predictor of success in education, job training, and work. However, there are many ways in which IQ scores can be increased, for instance by means of retesting or participation in learning potential training programs. What is the nature of these score gains? Jensen [Jensen, A. R. (1998a). "The g factor: The…

  1. Score Gains on "g"-Loaded Tests: No "g"

    ERIC Educational Resources Information Center

    te Nijenhuis, Jan; van Vianen, Annelies E. M.; van der Flier, Henk

    2007-01-01

    IQ scores provide the best general predictor of success in education, job training, and work. However, there are many ways in which IQ scores can be increased, for instance by means of retesting or participation in learning potential training programs. What is the nature of these score gains? Jensen [Jensen, A. R. (1998a). "The g factor: The…

  2. Gaining Control over Radiolytic Synthesis of Uniform Sub-3-nanometer Palladium Nanoparticles: Use of Aromatic Liquids in the Electron Microscope

    SciTech Connect

    Abellan Baeza, Patricia; Parent, Lucas R.; Al Hasan, Naila M.; Park, Chiwoo; Arslan, Ilke; Karim, Ayman M.; Evans, James E.; Browning, Nigel D.

    2016-01-07

    Synthesizing nanomaterials of uniform shape and size is of critical importance to access and manipulate the novel structure-property relationships arising at the nanoscale. In this work we synthesize Pd nanoparticles with well-controlled size using in situ liquid-stage scanning transmission electron microscopy (STEM) and demonstrate a match between the reaction kinetics and products of the radiolytic and chemical syntheses of size-stabilized Pd nanoparticles. We quantify the effect of electron dose on the nucleation kinetics, and compare these results with in situ small angle X-ray scattering (SAXS) experiments investigating the effect of temperature during chemical synthesis. This work introduces methods for precise control of nanoparticle synthesis in the STEM and provides a means to uncover the fundamental processes behind the size and shape stabilization of nanoparticles.

  3. Uniform Peanut Performance Tests (UPPT) for 2008: Shelling and Physical Properties

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) were established in 1973 through an informal arrangement among cooperating scientists involving seven major peanut-producing states. The purpose of these tests is to evaluate the commercial potential of advanced peanut breedinglines not formally released o...

  4. Uniform Peanut Performance Tests (UPPT) for 2006: Shelling and physical properties.

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) were established in 1973 through an informal arrangement among cooperating scientists involving seven major peanut-producing states. The purpose of these tests is to evaluate the commercial potential of advanced peanut breeding lines not formally released ...

  5. Uniform Peanut Performance Tests (UPPT) for 2007: Shelling and Physical Properties

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) were established in 1973 through an informal arrangement among cooperating scientists involving seven major peanut-producing states. The purpose of these tests is to evaluate the commercial potential of advanced peanut breeding lines not formally released ...

  6. Uniform Peanut Performance Test (UPPT) for 2006: Shelling and Physical Properties

    USDA-ARS?s Scientific Manuscript database

    The Uniform Peanut Performance Tests (UPPT) were established in 1973 through an informal arrangement among cooperating scientists involving seven major peanut-producing states. The purpose of these tests is to evaluate the commercial potential of advanced peanut breeding lines not formally released ...

  7. Liquid-Crystal Display (LCD) Screen Thermal Testing to Simulate Solar Gain

    DTIC Science & Technology

    2015-12-01

    ARL-TN-0723 ● DEC 2015 US Army Research Laboratory Liquid-Crystal Display (LCD) Screen Thermal Testing to Simulate Solar Gain...Screen Thermal Testing to Simulate Solar Gain by Steven Callaway Computational and Information Sciences Directorate, ARL...Display (LCD) Screen Thermal Testing to Simulate Solar Gain 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Steven

  8. Comparisons of uniform and discrete source distributions for use in bioassay laboratory performance testing

    SciTech Connect

    Scherpelz, R.I.; MacLellan, J.A.

    1987-09-01

    The Pacific Northwest Laboratory (PNL) is sending a torso phantom with radioactive material uniformly distributed in the lungs to in vivo bioassay laboratories for analysis. Although the radionuclides ultimately chosen for the studies had relatively long half-lives, future accreditation testing will require repeated tests with short half-life test nuclides. Computer modeling was used to simulate the major components of the phantom. Radiation transport calculations were then performed using the computer models to calculate dose rates either 15 cm from the chest or at its surface. For /sup 144/Ce and /sup 60/Co, three configurations were used for the lung comparison tests. Calculations show that, for most detector positions, a single plug containing /sup 40/K located in the back of the heart provides a good approximation to a uniform distribution of /sup 40/K. The approximation would lead, however, to a positive bias for the detector reading if the detector were located at the chest surface near the center. Loading the /sup 40/K in a uniform layer inside the chest wall is not a good approximation of the uniform distribution in the lungs, because most of the radionuclides would be situated close to the detector location and the only shielding would be the thickness of the chest wall. The calculated dose rates for /sup 60/Co and /sup 144/Ce were similar at all calculated reference points. 3 refs., 5 figs., 10 tabs.

  9. 10 CFR 431.264 - Uniform test method for the measurement of flow rate for commercial prerinse spray valves.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... gallons per minute (gpm) or liters per minute (L/min), shall be conducted in accordance with the test... 10 Energy 3 2013-01-01 2013-01-01 false Uniform test method for the measurement of flow rate for... Valves Test Procedures § 431.264 Uniform test method for the measurement of flow rate for...

  10. Composite Unit Accelerated Life Test of the High Gain Array

    DTIC Science & Technology

    1993-01-08

    computed using a classic Arrhenius relation and a 13.3 kcal/ mole activation energy. This value corresponds to a nominal activation energy for the...UNDERWATER COMPOENTS RELIABILITY TESTING OF LONG LIFE UNDERWATER COMPONENTS Alan V. Bray and Shawn L Arnett Texas Research Institute Austin, Inc. 9063...Austin, Inc. (TRI/Austin) Reliability Engineering Division A.V. Bray, S.L. Arnett, and S.C. Liberty 9063 Bee Caves Road Austin, Texas 78733 (512) 263

  11. Effects of Response Task and Accessory Stimuli on Redundancy Gain: Tests of the Hemispheric Coactivation Model

    ERIC Educational Resources Information Center

    Miller, Jeff; Van Nes, Fenna

    2007-01-01

    Two experiments tested predictions of the hemispheric coactivation model for redundancy gain (J. O. Miller, 2004). Simple reaction time was measured in divided attention tasks with visual stimuli presented to the left or right of fixation or redundantly to both sides. Experiment 1 tested the prediction that redundancy gain--the decrease in…

  12. Effects of Response Task and Accessory Stimuli on Redundancy Gain: Tests of the Hemispheric Coactivation Model

    ERIC Educational Resources Information Center

    Miller, Jeff; Van Nes, Fenna

    2007-01-01

    Two experiments tested predictions of the hemispheric coactivation model for redundancy gain (J. O. Miller, 2004). Simple reaction time was measured in divided attention tasks with visual stimuli presented to the left or right of fixation or redundantly to both sides. Experiment 1 tested the prediction that redundancy gain--the decrease in…

  13. Situational Effects May Account for Gain Scores in Cognitive Ability Testing: A Longitudinal SEM Approach

    ERIC Educational Resources Information Center

    Matton, Nadine; Vautier, Stephane; Raufaste, Eric

    2009-01-01

    Mean gain scores for cognitive ability tests between two sessions in a selection setting are now a robust finding, yet not fully understood. Many authors do not attribute such gain scores to an increase in the target abilities. Our approach consists of testing a longitudinal SEM model suitable to this view. We propose to model the scores' changes…

  14. Situational Effects May Account for Gain Scores in Cognitive Ability Testing: A Longitudinal SEM Approach

    ERIC Educational Resources Information Center

    Matton, Nadine; Vautier, Stephane; Raufaste, Eric

    2009-01-01

    Mean gain scores for cognitive ability tests between two sessions in a selection setting are now a robust finding, yet not fully understood. Many authors do not attribute such gain scores to an increase in the target abilities. Our approach consists of testing a longitudinal SEM model suitable to this view. We propose to model the scores' changes…

  15. Testing uniformity of mutants of the Lathyrus sativus L. (grasspea) using Bennet's method.

    PubMed

    Zawieja, B; Bocianowski, J; Rybin'ski, W

    2012-02-01

    In this paper interest is focused on uniformity of individual mutants. Because before the registration of a new variety the criteria for DUS (distinctness, uniformity and stability) are checked, so you should also check whether the mutant meets them. The aim of created mutants, in many genetic experiments, is to expand variation of the initial material. This is achieved through use of the mutagen or combination of mutagens on different stages of plants growth. The experimenter should choose some of obtained mutants (for example these which showed better property as regards the same trait). Calculations were done on the basis of results of test with variety Krab of the Lathyrus sativus L. (grasspea) species and 17 mutants getting from this variety. Uniformity was checked with the use of the Bennett's method which is based on testing of equality of coefficients of variation. After analysis the mutants with codes K3, K37, K63 and K64 were detected as uniform at the same level as variety Krab.

  16. 10 CFR Appendix Q to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Energy Consumption... Appendix Q to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Fluorescent... reference; see § 430.3). The test for measuring standby mode energy consumption of fluorescent lamp ballasts...

  17. Hypertelescopes: potential science gains, current testing and prospects in space

    NASA Astrophysics Data System (ADS)

    Labeyrie, A.

    2016-09-01

    In the way of giant dilute telescopes, the hypertelescope is a many-aperture interferometer, which provides direct high resolution images with efficient light concentration. Pending future versions in space, a prototype terrestrial hypertelescope is under test in a high valley of the southern Alps. A moving focal gondola, suspended 101 m above small static mirrors, is driven under computer control with millimeter accuracy. The coude focus at ground level has been qualified by observing a Vega image focused by one of the mirrors and transmitted through the gondola. Upgrades under way for multi-beam interference include full autoguiding, the installation of several cameras on the gondola and adaptive optics for cophasing. Science observing is expected to begin in a few years, and other potential sites are considered for a larger meta-aperture, in the kilometer range. Future space versions, utilizing a 10-1000 km flotilla of small mirrors, are also considered and proposed to NASA and ESA, but require different technical developments.

  18. Assessment of VOR gain function and its test-retest reliability in normal hearing individuals.

    PubMed

    Bansal, Shalini; Sinha, Sujeet Kumar

    2016-10-01

    Video head impulse test (vHIT) aids to assess all three pairs of semi-circular canals (SCCs) separately and can be utilized to find out the exact site of lesion in any three SCCs by measuring vestibulo ocular reflex (VOR) gain. VOR gain value of vHIT has been used to diagnose different vestibular pathologies. Hence, it is important to establish the test-retest reliability of the VOR gain parameters before it could be administered to the patients. Therefore, the aim of the present study was to obtain VOR gain data, correlate all planes in both sides of head (right and left) and assess the test-retest reliability of VOR gain measure using vHIT in 25 normal young adult participants. Video head impulse test tests were carried out with prototype ICS impulse video goggles with a camera speed of 250 frames/s, recording motion of the right eye in all three planes (lateral, right anterior left posterior, left anterior right posterior) for all the participants. vHIT testing was repeated for all the participants after 15 days. Statistical analysis revealed that mean VOR gain for right horizontal canal was higher than the left horizontal canal; right anterior canal was higher than left anterior canal and left anterior was higher than right posterior canal. Horizontal canals have more gain compared to anterior and posterior canals. There was no significant difference between the VOR gain of session 1 and session 2 for each SCC.

  19. Uniformity in the ATLAS electromagnetic calorimeter measured in test-beams

    SciTech Connect

    Nikolic-Audit, Irena

    2006-10-27

    The construction of the ATLAS liquid argon electromagnetic calorimeter has been completed and all the modules are assembled and are in the cryostat in the ATLAS cavern. During the construction, three barrel modules and three endcap modules were exposed to beam test in order to assess the uniformity performance and to verify the production reproducibility of the detector. The energy reconstruction method and the performance with electron beams are presented here. An overall constant term below 0.7 % is obtained.

  20. Propulsion and Energetics Panel Working Group 15 on the Uniform Engine Test Programme

    DTIC Science & Technology

    1990-02-01

    among member nations in aerospace research and development: - Exchange of scientific and technical information : - Providing assistance to member nations...developed in one country often were used in airframes developed in another. Both situations require engine pertormance information which can be interpreted...earlier test of uniform aerodynamic models in wind tunnels under the auspices of the Fluid Dynamics Panel. A formal proposal was presented to the

  1. 10 CFR Appendix X to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dehumidifiers

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Energy Consumption of Dehumidifiers X Appendix X to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Appendix X to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of...

  2. 10 CFR Appendix U to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Energy Consumption... Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans 1. Scope... significant digits as the previous step. Round the final energy consumption value to the nearest whole number...

  3. 10 CFR Appendix S to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Faucets and Showerheads

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 3 2012-01-01 2012-01-01 false Uniform Test Method for Measuring the Water Consumption of... Appendix S to Subpart B of Part 430—Uniform Test Method for Measuring the Water Consumption of Faucets and... water flow rate for faucets, expressed in gallons per minute (gpm) and liters per minute (L/min),...

  4. 10 CFR Appendix S to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Faucets and Showerheads

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Uniform Test Method for Measuring the Water Consumption of... Appendix S to Subpart B of Part 430—Uniform Test Method for Measuring the Water Consumption of Faucets and... water flow rate for faucets, expressed in gallons per minute (gpm) and liters per minute (L/min),...

  5. 10 CFR Appendix S to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Faucets and Showerheads

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Uniform Test Method for Measuring the Water Consumption of... Appendix S to Subpart B of Part 430—Uniform Test Method for Measuring the Water Consumption of Faucets and... water flow rate for faucets, expressed in gallons per minute (gpm) and liters per minute (L/min),...

  6. 10 CFR Appendix S to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Faucets and Showerheads

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Water Consumption of... Appendix S to Subpart B of Part 430—Uniform Test Method for Measuring the Water Consumption of Faucets and... water flow rate for faucets, expressed in gallons per minute (gpm) and liters per minute (L/min),...

  7. Quasi-Uniform High Speed Foam Crush Testing Using a Guided Drop Mass Impact

    NASA Technical Reports Server (NTRS)

    Jones, Lisa E. (Technical Monitor); Kellas, Sotiris

    2004-01-01

    A relatively simple method for measuring the dynamic crush response of foam materials at various loading rates is described. The method utilizes a drop mass impact configuration with mass and impact velocity selected such that the crush speed remains approximately uniform during the entire sample crushing event. Instrumentation, data acquisition, and data processing techniques are presented, and limitations of the test method are discussed. The objective of the test method is to produce input data for dynamic finite element modeling involving crash and energy absorption characteristics of foam materials.

  8. Uniform engine testing program phase 7: NASA Lewis Research Center second entry

    NASA Technical Reports Server (NTRS)

    Biesiadny, T. J.; Burkardt, L. A.; Abdelwahab, M.; Braithwaite, W. M.; Kirchgessner, T. A.; Silver, D.

    1986-01-01

    The propulsion and Energetics Panel, Working Group 15, of the Advisory Group for Aerospace Research and Development (AGARD) is sponsoring a Uniform Engine Testing Program (UETP). In this program, two jet engines were tested under identical conditions in certain NATO altitude and ground-level facilities as a means of correlating these facilities. With this second entry, NASA documented engine deterioration that may have occurred since inception of the UETP. Additionally, NASA investigated anomalies discovered during review of data from the five facilities which had participated in the program between the two NASA entries.

  9. Comparative studies of hemoperfusion devices. II. Pressure drop and flow uniformity tests.

    PubMed

    Cooney, D O; Infantolino, W; Kane, R

    1979-01-01

    One resin-based hemoperfusion device and three charcoal-based hemoperfusion devices were tested to determine their pressure drop and flow uniformity characteristics. Measurements were made on pressure drop versus flow rate using distilled water and on pressure drop versus time using bovine blood. Effluent concentration curves obtained after the step-change introduction of a high molecular weight dye solution to each unit were used to determine the priming volumes of the devices and were interpreted to yield information regarding the uniformities of flow in each device. The pressure drop and priming volume values for the resin-based device were significantly higher than the corresponding values for the charcoal-based units.

  10. A microstructural investigation of ``machining rings'' and deformation uniformity for dynamic ring compression tests

    NASA Astrophysics Data System (ADS)

    Cloete, T. J.; Hartley, R. S.; Nurick, G. N.

    2006-08-01

    A series of ring compression tests, conducted both quasi-statically (using a Zwick tensile test machine) and dynamically (using a split Hopkinson bar) are presented. The friction conditions were inferred from the behaviour of the inner diameter of the ring specimen using the analysis of Avitzur. Both quasi-static and dynamic specimens displayed machining rings. Microstructural analysis revealed that under quasi-static conditions the machining rings correlate with fold-over, while under dynamic conditions machining rings can appear without fold over. This indicates that machining rings formed during dynamic tests may be due to lubrication breakdown. The results indicate that the assumption of uniform specimen deformation is reasonable for strains attainable during split Hopkinson bar tests.

  11. Accelerated Desensitization and Adaptive Attitudes Interventions and Test Gains with Academic Probation Students

    ERIC Educational Resources Information Center

    Driscoll, Richard; Holt, Bruce; Hunter, Lori

    2005-01-01

    The study evaluates the test-gain benefits of an accelerated desensitization and adaptive attitudes intervention for test-anxious students. College students were screened for high test anxiety. Twenty anxious students, half of them on academic probation, were assigned to an Intervention or to a minimal treatment Control group. The Intervention was…

  12. Teachers' Responses to High-Stakes Testing and the Validity of Gains: A Pilot Study. CSE Report.

    ERIC Educational Resources Information Center

    Koretz, Daniel M.; Hamilton, Laura S.

    Previous studies of the validity of gains on high-stakes tests have compared trends in scores on a high-stakes test to trends on a lower-stakes test, such as NAEP. However, generalizability of gains is likely to be incomplete even when gains are meaningful because of differences in the inferences the two tests are designed to support. Therefore,…

  13. Measurement uncertainty for the Uniform Engine Testing Program conducted at NASA Lewis Research Center

    NASA Technical Reports Server (NTRS)

    Abdelwahab, Mahmood; Biesiadny, Thomas J.; Silver, Dean

    1987-01-01

    An uncertainty analysis was conducted to determine the bias and precision errors and total uncertainty of measured turbojet engine performance parameters. The engine tests were conducted as part of the Uniform Engine Test Program which was sponsored by the Advisory Group for Aerospace Research and Development (AGARD). With the same engines, support hardware, and instrumentation, performance parameters were measured twice, once during tests conducted in test cell number 3 and again during tests conducted in test cell number 4 of the NASA Lewis Propulsion Systems Laboratory. The analysis covers 15 engine parameters, including engine inlet airflow, engine net thrust, and engine specific fuel consumption measured at high rotor speed of 8875 rpm. Measurements were taken at three flight conditions defined by the following engine inlet pressure, engine inlet total temperature, and engine ram ratio: (1) 82.7 kPa, 288 K, 1.0, (2) 82.7 kPa, 288 K, 1.3, and (3) 20.7 kPa, 288 K, 1.3. In terms of bias, precision, and uncertainty magnitudes, there were no differences between most measurements made in test cells number 3 and 4. The magnitude of the errors increased for both test cells as engine pressure level decreased. Also, the level of the bias error was two to three times larger than that of the precision error.

  14. Design, development and testing of the x-ray timing explorer High Gain Antenna System

    NASA Technical Reports Server (NTRS)

    Lecha, Javier; Woods, Claudia; Phan, Minh

    1995-01-01

    The High Gain Antenna System (HGAS), consisting of two High Gain Antenna Deployment Systems (HGADS) and two Antenna Pointing Systems (APS), is used to position two High Gain Antennas (HGA) on the X-Ray Timing Explorer (XTE). A similar APS will be used on the upcoming Tropical Rainfall Measuring Mission (TRMM). Both XTE and TRMM are NASA in-house satellites. The salient features of the system include the two-axis gimbal and control electronics of the APS and the spring deployment and latch/release mechanisms of the HGADS. This paper describes some of the challenges faced in the design and testing of this system and their resolutions.

  15. Development of Drop/Shock Test in Microelectronics and Impact Dynamic Analysis for Uniform Board Response

    NASA Astrophysics Data System (ADS)

    Kallolimath, Sharan Chandrashekar

    For the past several years, many researchers are constantly developing and improving board level drop test procedures and specifications to quantify the solder joint reliability performance of consumer electronics products. Predictive finite element analysis (FEA) by utilizing simulation software has become widely acceptable verification method which can reduce time and cost of the real-time test process. However, due to testing and metrological limitations it is difficult not only to simulate exact drop condition and capture critical measurement data but also tedious to calibrate the system to improve test methods. Moreover, some of the important ever changing factors such as board flexural rigidity, damping, drop height, and drop orientation results in non-uniform stress/strain distribution throughout the test board. In addition, one of the most challenging tasks is to quantify uniform stress and strain distribution throughout the test board and identify critical failure factors. The major contributions of this work are in the four aspects of the drop test in electronics as following. First of all, an analytical FEA model was developed to study the board natural frequencies and responses of the system with the consideration of dynamic stiffness, damping behavior of the material and effect of impact loading condition. An approach to find the key parameters that affect stress and strain distributions under predominate mode responses was proposed and verified with theoretical solutions. Input-G method was adopted to study board response behavior and cut boundary interpolation methods was used to analyze local model solder joint stresses with the development of global/local FEA model in ANSYS software. Second, no ring phenomenon during the drop test was identified theoretically when the test board was modeled as both discrete system and continuous system. Numerical analysis was then conducted by FEA method for detailed geometry of attached chips with solder

  16. The Relationship of Motivational Values of Math and Reading Teachers to Student Test Score Gains

    ERIC Educational Resources Information Center

    Loewen, David Allen

    2013-01-01

    This exploratory correlational study seeks to answer the question of whether a relationship exists between student average test score gains on state exams and teachers' rating of values on the Schwartz Values Survey. Eighty-seven randomly selected Kansas teachers of math and/or reading, grades four through eight, participated. Student test score…

  17. A novel Cerium-141 based flood field uniformity phantom: Assessment of its suitability to perform daily uniformity test in a clinical nuclear medicine department.

    PubMed

    Jha, Ashish Kumar; Mithun, Sneha; Chauhan, Manoj H; Purandare, Nilendu C; Shah, Sneha; Agrawal, Archi; Saxena, Sanjay Kumar; Dash, Ashutosh; Rangarajan, Venkatesh

    2017-04-13

    Daily quality control of a gamma camera is of utmost importance to assess the suitability of the camera for clinical use. Aim of our study is to find out the relevance of indigenously developed (141)Ce -flood field phantom in daily quality control of gamma camera. Material & Method: Uniformity tests were performed by using (141)Ce-flood field phantom and commercially available (57)Co -flood field phantom, and results compared. Result: The average percentage integral uniformity obtained by (141)Ce -flood field phantom and (57)Co -flood field phantom were 3.24 and 2.72 for detector one and 3.31 and 2.78 for detector two respectively. Conclusion: Indigenously developed (141)Ce-flood field phantom can be a suitable alternative of commercially available phantom.

  18. Testing for departure from uniformity and estimating mean direction for circular data.

    PubMed

    Ruxton, Graeme D

    2017-01-01

    Although circular data are common in biological studies, the analysis of such data is often more rudimentary than it need be. One of the most common hypotheses tested is whether the data suggest that samples are clustered around a certain specified direction, rather than being uniformly spread across all possible directions. Here, I use data from a recent publication on the compass directions of epiphytes and mistletoes on tree trunks. This is used to demonstrate how with relatively little extra work researchers can improve the rigour of testing such hypotheses, and this improved rigour can lead to biological insights missed by simpler analyses. Specifically, I highlight that a much broader range of null hypotheses can be tested than current practice, and that a range of methods are available for estimating a confidence interval for mean direction. I offer advice on appropriate selection for both tests and parameter estimation methods, and highlight the need to correct for the fact that sample estimates are biased estimates of population parameters for circular data. © 2017 The Author(s).

  19. Heat gain testing to energy balance protocol. Final report, August 1995-February 1997

    SciTech Connect

    Knappmiller, K.; Schrock, D.

    1997-02-01

    Under sponsorship of the Gas Research Institute, heat gain tests were conducted on gas and electric commercial cooking appliances, applying the American Society for Testing and Materials (ASTM) Standard Test Method for the Performance of Commercial Kitchen Ventilation Systems, F1704-96. The commercial cooking appliances tested in this program were gas and electric: griddles, ranges, convection ovens, charbroilers, and fryers. These appliances were all tested under a wall canopy hood operating at a single exhaust rate appropriate for the particular cooking appliance.

  20. 10 CFR 431.76 - Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... efficiency of commercial warm air furnaces. 431.76 Section 431.76 Energy DEPARTMENT OF ENERGY ENERGY... Furnaces Test Procedures § 431.76 Uniform test method for the measurement of energy efficiency of commercial warm air furnaces. (a) This section covers the test procedures you must follow if, pursuant...

  1. 10 CFR 431.76 - Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... efficiency of commercial warm air furnaces. 431.76 Section 431.76 Energy DEPARTMENT OF ENERGY ENERGY... Furnaces Test Procedures § 431.76 Uniform test method for the measurement of energy efficiency of commercial warm air furnaces. (a) This section covers the test procedures you must follow if, pursuant...

  2. 10 CFR 431.76 - Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... efficiency of commercial warm air furnaces. 431.76 Section 431.76 Energy DEPARTMENT OF ENERGY ENERGY... Furnaces Test Procedures § 431.76 Uniform test method for the measurement of energy efficiency of commercial warm air furnaces. (a) This Section covers the test procedures you must follow if, pursuant...

  3. 10 CFR 431.76 - Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... efficiency of commercial warm air furnaces. 431.76 Section 431.76 Energy DEPARTMENT OF ENERGY ENERGY... Furnaces Test Procedures § 431.76 Uniform test method for the measurement of energy efficiency of commercial warm air furnaces. (a) This Section covers the test procedures you must follow if, pursuant...

  4. 10 CFR 431.76 - Uniform test method for the measurement of energy efficiency of commercial warm air furnaces.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... efficiency of commercial warm air furnaces. 431.76 Section 431.76 Energy DEPARTMENT OF ENERGY ENERGY... Furnaces Test Procedures § 431.76 Uniform test method for the measurement of energy efficiency of commercial warm air furnaces. (a) This Section covers the test procedures you must follow if, pursuant...

  5. 10 CFR 431.134 - Uniform test methods for the measurement of energy and water consumption of automatic commercial...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... water consumption of automatic commercial ice makers. 431.134 Section 431.134 Energy DEPARTMENT OF... Automatic Commercial Ice Makers Test Procedures § 431.134 Uniform test methods for the measurement of energy and water consumption of automatic commercial ice makers. (a) Scope. This section provides the test...

  6. 10 CFR 431.86 - Uniform test method for the measurement of energy efficiency of commercial packaged boilers.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... efficiency of commercial packaged boilers. 431.86 Section 431.86 Energy DEPARTMENT OF ENERGY ENERGY... Boilers Test Procedures § 431.86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers. (a) Scope. This section provides test procedures that must be followed...

  7. 10 CFR 431.86 - Uniform test method for the measurement of energy efficiency of commercial packaged boilers.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... efficiency of commercial packaged boilers. 431.86 Section 431.86 Energy DEPARTMENT OF ENERGY ENERGY... Boilers Test Procedures § 431.86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers. (a) Scope. This section provides test procedures that must be followed...

  8. 10 CFR 431.86 - Uniform test method for the measurement of energy efficiency of commercial packaged boilers.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... efficiency of commercial packaged boilers. 431.86 Section 431.86 Energy DEPARTMENT OF ENERGY ENERGY... Boilers Test Procedures § 431.86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers. (a) Scope. This section provides test procedures that must be followed...

  9. 10 CFR 431.86 - Uniform test method for the measurement of energy efficiency of commercial packaged boilers.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... efficiency of commercial packaged boilers. 431.86 Section 431.86 Energy DEPARTMENT OF ENERGY ENERGY... Boilers Test Procedures § 431.86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers. (a) Scope. This section provides test procedures that must be followed...

  10. 10 CFR 431.86 - Uniform test method for the measurement of energy efficiency of commercial packaged boilers.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... efficiency of commercial packaged boilers. 431.86 Section 431.86 Energy DEPARTMENT OF ENERGY ENERGY... Boilers Test Procedures § 431.86 Uniform test method for the measurement of energy efficiency of commercial packaged boilers. (a) Scope. This section provides test procedures that must be followed...

  11. 10 CFR 431.294 - Uniform test method for the measurement of energy consumption of refrigerated bottled or canned...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... consumption of refrigerated bottled or canned beverage vending machines. 431.294 Section 431.294 Energy... EQUIPMENT Refrigerated Bottled or Canned Beverage Vending Machines Test Procedures § 431.294 Uniform test... machines. (a) Scope. This section provides test procedures for measuring, pursuant to EPCA, the...

  12. 10 CFR 431.294 - Uniform test method for the measurement of energy consumption of refrigerated bottled or canned...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... consumption of refrigerated bottled or canned beverage vending machines. 431.294 Section 431.294 Energy... EQUIPMENT Refrigerated Bottled or Canned Beverage Vending Machines Test Procedures § 431.294 Uniform test... machines. (a) Scope. This section provides test procedures for measuring, pursuant to EPCA, the...

  13. 10 CFR 431.294 - Uniform test method for the measurement of energy consumption of refrigerated bottled or canned...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... consumption of refrigerated bottled or canned beverage vending machines. 431.294 Section 431.294 Energy... EQUIPMENT Refrigerated Bottled or Canned Beverage Vending Machines Test Procedures § 431.294 Uniform test... machines. (a) Scope. This section provides test procedures for measuring, pursuant to EPCA, the...

  14. 10 CFR 431.294 - Uniform test method for the measurement of energy consumption of refrigerated bottled or canned...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... consumption of refrigerated bottled or canned beverage vending machines. 431.294 Section 431.294 Energy... EQUIPMENT Refrigerated Bottled or Canned Beverage Vending Machines Test Procedures § 431.294 Uniform test... machines. (a) Scope. This section provides test procedures for measuring, pursuant to EPCA, the...

  15. 10 CFR 431.294 - Uniform test method for the measurement of energy consumption of refrigerated bottled or canned...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... consumption of refrigerated bottled or canned beverage vending machines. 431.294 Section 431.294 Energy... EQUIPMENT Refrigerated Bottled or Canned Beverage Vending Machines Test Procedures § 431.294 Uniform test... machines. (a) Scope. This section provides test procedures for measuring, pursuant to EPCA, the...

  16. Uniform Foam Crush Testing for Multi-Mission Earth Entry Vehicle Impact Attenuation

    NASA Technical Reports Server (NTRS)

    Patterson, Byron W.; Glaab, Louis J.

    2012-01-01

    Multi-Mission Earth Entry Vehicles (MMEEVs) are blunt-body vehicles designed with the purpose of transporting payloads from outer space to the surface of the Earth. To achieve high-reliability and minimum weight, MMEEVs avoid use of limited-reliability systems, such as parachutes and retro-rockets, instead using built-in impact attenuators to absorb energy remaining at impact to meet landing loads requirements. The Multi-Mission Systems Analysis for Planetary Entry (M-SAPE) parametric design tool is used to facilitate the design of MMEEVs and develop the trade space. Testing was conducted to characterize the material properties of several candidate impact foam attenuators to enhance M-SAPE analysis. In the current effort, four different Rohacell foams are tested at three different, uniform, strain rates (approximately 0.17, approximately 100, approximately 13,600%/s). The primary data analysis method uses a global data smoothing technique in the frequency domain to remove noise and system natural frequencies. The results from the data indicate that the filter and smoothing technique are successful in identifying the foam crush event and removing aberrations. The effect of strain rate increases with increasing foam density. The 71-WF-HT foam may support Mars Sample Return requirements. Several recommendations to improve the drop tower test technique are identified.

  17. Supplemental Educational Services and Student Test Score Gains: Evidence from a Large, Urban School District

    ERIC Educational Resources Information Center

    Springer, Matthew G.; Pepper, Matthew J.; Ghosh-Dastidar, Bonnie

    2014-01-01

    This study examines the effect of supplemental education services (SES) on student test score gains and whether particular subgroups of students benefit more from NCLB tutoring services. Our sample includes information on students enrolled in third through eighth grades nested in 121 elementary and middle schools over a five-year period comprising…

  18. State Tests Show Gains since NCLB; Report Cautions against Crediting Education Law

    ERIC Educational Resources Information Center

    Hoff, David J.

    2007-01-01

    Scores on state tests have increased consistently and significantly in the five years since the No Child Left Behind Act (NCLB) became law, and there's some evidence that gains that started in the 1990s accelerated after the law's enactment, a new report concludes. The authors of the report, which was set for release this week, are quick to say…

  19. Estimated Effect of the Teacher Advancement Program on Student Test Score Gains

    ERIC Educational Resources Information Center

    Springer, Matthew G.; Ballou, Dale; Peng, Art

    2014-01-01

    This article presents findings from the first independent, third-party appraisal of the impact of the Teacher Advancement Program (TAP) on student test score gains in mathematics. TAP is a comprehensive school reform model designed to attract highly effective teachers, improve instructional effectiveness, and elevate student achievement. We use a…

  20. Estimated Effect of the Teacher Advancement Program on Student Test Score Gains

    ERIC Educational Resources Information Center

    Springer, Matthew G.; Ballou, Dale; Peng, Art

    2014-01-01

    This article presents findings from the first independent, third-party appraisal of the impact of the Teacher Advancement Program (TAP) on student test score gains in mathematics. TAP is a comprehensive school reform model designed to attract highly effective teachers, improve instructional effectiveness, and elevate student achievement. We use a…

  1. A synopsis of test results and knowledge gained from the Phase-0 CSI evolutionary model

    NASA Technical Reports Server (NTRS)

    Belvin, W. Keith; Elliott, Kenny B.; Horta, Lucas G.

    1993-01-01

    The Phase-0 CSI Evolutionary Model (CEM) is a testbed for the study of space platform global line-of-sight (LOS) pointing. Now that the tests have been completed, a summary of hardware and closed-loop test experiences is necessary to insure a timely dissemination of the knowledge gained. The testbed is described and modeling experiences are presented followed by a summary of the research performed by various investigators. Some early lessons on implementing the closed-loop controllers are described with particular emphasis on real-time computing requirements. A summary of closed-loop studies and a synopsis of test results are presented. Plans for evolving the CEM from phase 0 to phases 1 and 2 are also described. Subsequently, a summary of knowledge gained from the design and testing of the Phase-0 CEM is made.

  2. The Role of Cohesive Particle Interactions on Solids Uniformity and Mobilization During Jet Mixing: Testing Recommendations

    SciTech Connect

    Gauglitz, Phillip A.; Wells, Beric E.; Bamberger, Judith A.; Fort, James A.; Chun, Jaehun; Jenks, Jeromy WJ

    2010-04-01

    Radioactive waste that is currently stored in large underground tanks at the Hanford Site will be staged in selected double-shell tanks (DSTs) and then transferred to the Waste Treatment and Immobilization Plant (WTP). Before being transferred, the waste will be mixed, sampled, and characterized to determine if the waste composition and meets the waste feed specifications. Washington River Protection Solutions is conducting a Tank Mixing and Sampling Demonstration Program to determine the mixing effectiveness of the current baseline mixing system that uses two jet mixer pumps and the adequacy of the planned sampling method. The overall purpose of the demonstration program is to mitigate the technical risk associated with the mixing and sampling systems meeting the feed certification requirements for transferring waste to the WTP.The purpose of this report is to analyze existing data and evaluate whether scaled mixing tests with cohesive simulants are needed to meet the overall objectives of the small-scale mixing demonstration program. This evaluation will focus on estimating the role of cohesive particle interactions on various physical phenomena that occur in parts of the mixing process. A specific focus of the evaluation will be on the uniformity of suspended solids in the mixed region. Based on the evaluation presented in this report and the absence of definitive studies, the recommendation is to conduct scaled mixing tests with cohesive particles and augment the initial testing with non-cohesive particles. In addition, planning for the quantitative tests would benefit from having test results from some scoping experiments that would provide results on the general behavior when cohesive inter-particle forces are important.

  3. Horizontal Eye Position Affects Measured Vertical VOR Gain on the Video Head Impulse Test.

    PubMed

    McGarvie, Leigh A; Martinez-Lopez, Marta; Burgess, Ann M; MacDougall, Hamish G; Curthoys, Ian S

    2015-01-01

    With the video head impulse test (vHIT), the vertical VOR gain is defined as (vertical eye velocity/vertical head velocity), but compensatory eye movements to vertical canal stimulation usually have a torsional component. To minimize the contribution of torsion to the eye movement measurement, the horizontal gaze direction should be directed 40° from straight ahead so it is in the plane of the stimulated canal plane pair. as gaze is systematically moved horizontally away from canal plane alignment, the measured vertical VOR gain should decrease. Ten healthy subjects, with vHIT measuring vertical eye movement to head impulses in the plane of the left anterior-right posterior (LARP) canal plane, with gaze at one of five horizontal gaze positions [40°(aligned with the LARP plane), 20°, 0°, -20°, -40°]. Every head impulse was in the LARP plane. The compensatory eye movement was measured by the vHIT prototype system. The one operator delivered every impulse. The canal stimulus remained identical across trials, but the measured vertical VOR gain decreased as horizontal gaze angle was shifted away from alignment with the LARP canal plane. In measuring vertical VOR gain with vHIT the horizontal gaze angle should be aligned with the canal plane under test.

  4. Horizontal Eye Position Affects Measured Vertical VOR Gain on the Video Head Impulse Test

    PubMed Central

    McGarvie, Leigh A.; Martinez-Lopez, Marta; Burgess, Ann M.; MacDougall, Hamish G.; Curthoys, Ian S.

    2015-01-01

    Background/hypothesis: With the video head impulse test (vHIT), the vertical VOR gain is defined as (vertical eye velocity/vertical head velocity), but compensatory eye movements to vertical canal stimulation usually have a torsional component. To minimize the contribution of torsion to the eye movement measurement, the horizontal gaze direction should be directed 40° from straight ahead so it is in the plane of the stimulated canal plane pair. Hypothesis: as gaze is systematically moved horizontally away from canal plane alignment, the measured vertical VOR gain should decrease. Study design: Ten healthy subjects, with vHIT measuring vertical eye movement to head impulses in the plane of the left anterior-right posterior (LARP) canal plane, with gaze at one of five horizontal gaze positions [40°(aligned with the LARP plane), 20°, 0°, −20°, −40°]. Methods: Every head impulse was in the LARP plane. The compensatory eye movement was measured by the vHIT prototype system. The one operator delivered every impulse. Results: The canal stimulus remained identical across trials, but the measured vertical VOR gain decreased as horizontal gaze angle was shifted away from alignment with the LARP canal plane. Conclusion: In measuring vertical VOR gain with vHIT the horizontal gaze angle should be aligned with the canal plane under test. PMID:25852637

  5. 10 CFR Appendix F to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Room Air Conditioners

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... of Room Air Conditioners F Appendix F to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. F Appendix F to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Room...

  6. 10 CFR Appendix F to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Room Air Conditioners

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... of Room Air Conditioners F Appendix F to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. F Appendix F to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Room...

  7. 10 CFR Appendix X to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dehumidifiers

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... of Dehumidifiers X Appendix X to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. X Appendix X to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of...

  8. 10 CFR Appendix X to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dehumidifiers

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... of Dehumidifiers X Appendix X to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. X Appendix X to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of...

  9. 10 CFR 431.204 - Uniform test method for the measurement of energy consumption of illuminated exit signs.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Uniform test method for the measurement of energy consumption of illuminated exit signs. 431.204 Section 431.204 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Illuminated Exit Signs Test...

  10. 10 CFR 431.204 - Uniform test method for the measurement of energy consumption of illuminated exit signs.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 3 2014-01-01 2014-01-01 false Uniform test method for the measurement of energy consumption of illuminated exit signs. 431.204 Section 431.204 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Illuminated Exit Signs Test...

  11. 10 CFR 431.204 - Uniform test method for the measurement of energy consumption of illuminated exit signs.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Uniform test method for the measurement of energy consumption of illuminated exit signs. 431.204 Section 431.204 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Illuminated Exit Signs Test...

  12. 10 CFR Appendix Z to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of External Power Supplies

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Uniform Test Method for Measuring the Energy Consumption of External Power Supplies Z Appendix Z to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. Z...

  13. 10 CFR Appendix U to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans U Appendix U to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. U Appendix U to...

  14. 10 CFR 431.204 - Uniform test method for the measurement of energy consumption of illuminated exit signs.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform test method for the measurement of energy consumption of illuminated exit signs. 431.204 Section 431.204 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Illuminated Exit Signs Test...

  15. 10 CFR 431.204 - Uniform test method for the measurement of energy consumption of illuminated exit signs.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 3 2012-01-01 2012-01-01 false Uniform test method for the measurement of energy consumption of illuminated exit signs. 431.204 Section 431.204 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Illuminated Exit Signs Test...

  16. 10 CFR Appendix Q to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts Q Appendix Q to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. Q...

  17. 10 CFR 431.64 - Uniform test method for the measurement of energy consumption of commercial refrigerators...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... consumption of commercial refrigerators, freezers, and refrigerator-freezers. 431.64 Section 431.64 Energy... EQUIPMENT Commercial Refrigerators, Freezers and Refrigerator-Freezers Test Procedures § 431.64 Uniform test method for the measurement of energy consumption of commercial refrigerators, freezers, and...

  18. 10 CFR Appendix Q to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 3 2014-01-01 2014-01-01 false Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts Q Appendix Q to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. Q...

  19. 10 CFR Appendix F to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Room Air Conditioners

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 3 2012-01-01 2012-01-01 false Uniform Test Method for Measuring the Energy Consumption of Room Air Conditioners F Appendix F to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. F...

  20. 10 CFR Appendix Q to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 3 2012-01-01 2012-01-01 false Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts Q Appendix Q to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. Q...

  1. 10 CFR Appendix F to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Room Air Conditioners

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 3 2014-01-01 2014-01-01 false Uniform Test Method for Measuring the Energy Consumption of Room Air Conditioners F Appendix F to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. F...

  2. 10 CFR 431.134 - Uniform test methods for the measurement of energy consumption and water consumption of automatic...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... consumption and water consumption of automatic commercial ice makers. 431.134 Section 431.134 Energy... EQUIPMENT Automatic Commercial Ice Makers Test Procedures § 431.134 Uniform test methods for the measurement of energy consumption and water consumption of automatic commercial ice makers. (a) Scope. This...

  3. 10 CFR 431.134 - Uniform test methods for the measurement of energy consumption and water consumption of automatic...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... consumption and water consumption of automatic commercial ice makers. 431.134 Section 431.134 Energy... EQUIPMENT Automatic Commercial Ice Makers Test Procedures § 431.134 Uniform test methods for the measurement of energy consumption and water consumption of automatic commercial ice makers. (a) Scope. This...

  4. 10 CFR 431.224 - Uniform test method for the measurement of energy consumption for traffic signal modules and...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... conducting the test procedure set forth in Environmental Protection Agency, “ENERGY STAR Program Requirements... 10 Energy 3 2012-01-01 2012-01-01 false Uniform test method for the measurement of energy consumption for traffic signal modules and pedestrian modules. 431.224 Section 431.224 Energy DEPARTMENT...

  5. 10 CFR 431.224 - Uniform test method for the measurement of energy consumption for traffic signal modules and...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... conducting the test procedure set forth in Environmental Protection Agency, “ENERGY STAR Program Requirements... 10 Energy 3 2014-01-01 2014-01-01 false Uniform test method for the measurement of energy consumption for traffic signal modules and pedestrian modules. 431.224 Section 431.224 Energy DEPARTMENT...

  6. 10 CFR 431.224 - Uniform test method for the measurement of energy consumption for traffic signal modules and...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... conducting the test procedure set forth in Environmental Protection Agency, “ENERGY STAR Program Requirements... 10 Energy 3 2013-01-01 2013-01-01 false Uniform test method for the measurement of energy consumption for traffic signal modules and pedestrian modules. 431.224 Section 431.224 Energy DEPARTMENT...

  7. 10 CFR 431.107 - Uniform test method for the measurement of energy efficiency of commercial heat pump water...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... efficiency of commercial heat pump water heaters. 431.107 Section 431.107 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Commercial Water Heaters, Hot Water Supply Boilers and Unfired Hot Water Storage Tanks Test Procedures § 431.107 Uniform test...

  8. 10 CFR Appendix I to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Conventional Ranges, Conventional...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Energy Consumption of Conventional Ranges, Conventional Cooking Tops, Conventional Ovens, and Microwave Ovens I Appendix I to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430...

  9. 10 CFR Appendix S to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Faucets and Showerheads

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 3 2014-01-01 2014-01-01 false Uniform Test Method for Measuring the Water Consumption of Faucets and Showerheads S Appendix S to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App....

  10. Verification of BLAST by comparison with direct gain test cell measurements

    SciTech Connect

    Andersson, B.; Bauman, F.; Kammerud, R.

    1980-11-01

    Comparisons between temperatures measured in a direct solar gain test cell and temperatures predicted by the building energy analysis computer program BLAST are reported. The comparisons were performed for three distinct climate periods; the simulations were driven by weather data collected at the test cell site in Los Alamos, New Mexico. The test cell configurations and weather data manipulations are described; quantitative evaluations of the comparisons between measured and predicted interior temperatures are presented; limitations of the comparisons are discussed; and sensitivities of the simulation results to uncertainties in the measured parameters are examined.

  11. Signal uniformity of mammography systems and its impact on test results from contrast detail phantoms

    NASA Astrophysics Data System (ADS)

    Kaar, M.; Semturs, F.; Hummel, J.; Hoffmann, R.; Figl, M.

    2015-03-01

    Technical quality assurance (TQA) procedures for mammography systems usually include tests with a contrast-detail phantom. These phantoms contain multiple objects of varying dimensions arranged on a flat body. Exposures of the phantom are then evaluated by an observer, either human or software. One well-known issue of this method is that dose distribution is not uniform across the image area of any mammography system, mainly due to the heel effect. The purpose of this work is to investigate to what extent image quality differs across the detector plane. We analyze a total of 320 homogeneous mammography exposures from 32 radiology institutes. Systems of different models and manufacturers, both computed radiography (CR) and direct radiography (DR) are included. All images were taken from field installations operated within the nationwide Austrian mammography screening program, which includes mandatory continuous TQA. We calculate signal-to-noise ratios (SNR) for 15 regions of interest arranged to cover the area of the phantom. We define the 'signal range' of an image and compare this value categorized by technologies. We found the deviations of SNR greater in anterior-posterior than in lateral direction. SNR ranges are significantly higher for CR systems than for DR systems.

  12. Influence of movable test section elements configuration on its drag and flow field uniformity at transonic speeds

    NASA Astrophysics Data System (ADS)

    Glazkov, S. A.; Gorbushin, A. R.; Osipova, S. L.; Semenov, A. V.

    2016-10-01

    The report describes the results of flow field experimental research in TsAGI T-128 transonic wind tunnel. During the tests Mach number, stagnation pressure, test section wall perforation ratio, angles between the test section panels and mixing chamber flaps varied. Based on the test results one determined corrections to the free-stream Mach number related to the flow speed difference in the model location and in the zone of static pressure measurement on the test section walls, nonuniformity of the longitudinal velocity component in the model location, optimal position of the movable test section elements to provide flow field uniformity in the test section and minimize the test leg drag.

  13. Reverberation Chamber Uniformity Validation and Radiated Susceptibility Test Procedures for the NASA High Intensity Radiated Fields Laboratory

    NASA Technical Reports Server (NTRS)

    Koppen, Sandra V.; Nguyen, Truong X.; Mielnik, John J.

    2010-01-01

    The NASA Langley Research Center's High Intensity Radiated Fields Laboratory has developed a capability based on the RTCA/DO-160F Section 20 guidelines for radiated electromagnetic susceptibility testing in reverberation chambers. Phase 1 of the test procedure utilizes mode-tuned stirrer techniques and E-field probe measurements to validate chamber uniformity, determines chamber loading effects, and defines a radiated susceptibility test process. The test procedure is segmented into numbered operations that are largely software controlled. This document is intended as a laboratory test reference and includes diagrams of test setups, equipment lists, as well as test results and analysis. Phase 2 of development is discussed.

  14. Pumping tests in non-uniform aquifers - the linear strip case

    USGS Publications Warehouse

    Butler, J.J.; Liu, W.Z.

    1991-01-01

    Many pumping tests are performed in geologic settings that can be conceptualized as a linear infinite strip of one material embedded in a matrix of differing flow properties. A semi-analytical solution is presented to aid the analysis of drawdown data obtained from pumping tests performed in settings that can be represented by such a conceptual model. Integral transform techniques are employed to obtain a solution in transform space that can be numerically inverted to real space. Examination of the numerically transformed solution reveals several interesting features of flow in this configuration. If the transmissivity of the strip is much higher than that of the matrix, linear and bilinear flow are the primary flow regimes during a pumping test. If the contrast between matrix and strip properties is not as extreme, then radial flow should be the primary flow mechanism. Sensitivity analysis is employed to develop insight into the controls on drawdown in this conceptual model and to demonstrate the importance of temporal and spatial placement of observations. Changes in drawdown are sensitive to the transmissivity of the strip for a limited time duration. After that time, only the total drawdown remains a function of strip transmissivity. In the case of storativity, both the total drawdown and changes in drawdown are sensitive to the storativity of the strip for a time of quite limited duration. After that time, essentially no information can be gained about the storage properties of the strip from drawdown data. An example analysis is performed using data previously presented in the literature to demonstrate the viability of the semi-analytical solution and to illustrate a general procedure for analysis of drawdown data in complex geologic settings. This example reinforces the importance of observation well placement and the time of data collection in constraining parameter correlation, a major source of the uncertainty that arises in the parameter estimation

  15. Characterizing the Vertical Distribution of Hydraulic Conductivity Using the Multilevel Slug Test Subject to Skin Effects: Comparison of the Uniform-head and Uniform-flux Wellbore Conditions

    NASA Astrophysics Data System (ADS)

    wei-Chiang, C.; Chen, C. S.

    2016-12-01

    The multilevel slug test (MLST) is an in-well technique in characterizing the vertical distribution of hydraulic conductivity K(z) in granular or fractured formations. In modeling MLST, the well screen is either simulated as a uniform-flux (UF) or a uniform head (UH) condition. This study investigates the impact of the skin effect, positive or negative, on the UH and UF models. The positive skin effect, as associated with a reduced hydraulic conductivity surrounding the well due to drilling mud invasion, is taken into account by making use of a skin factor, Sk.The negative skin effect, as associated with an increased hydraulic conductivity due to overdeveloping of the well, is modeled by using an effective well radius, re, which is greater than or equal to the well radius, rw. The UF and UH models are compared using different values of Sk and re for a variety of the partial penetration ratio of screen length to aquifer thickness, φ, the vertical anisotropy ratio of hydraulic conductivity, κ, and the aspect ratio of rw to the screen length, α. It is found that (1) the two models yield results of negligible difference when the well fully penetrates the aquifer (i.e., φ=1) regardless of the values of α,κ, Sk or re, (2) the two models yield essentially the same results for negative skin for all α and κ, (3) the difference between the two models decreases as Sk gets larger, regardless of the values of α, φ, or κ, yet it becomes negligible for Sk is greater than unity, and (4) when the skin effect is absent, the maximum difference between the two models is within 3-5%. As a result, it is suggested the UF model be used since it is mathematically easier to solve than the UH model, with or without skin effects.

  16. Design, testing and modeling of a high-gain magnetic flux-compression generator

    SciTech Connect

    Sheppard, M.G.; Freeman, B.L.; Bowers, R.L.; Brownell, J.H.; Fowler, C.M.; Fritz, J.N.; Greene, A.E.; Marsh, S.P.; Oliphant, T.A.; Tubbs, D.L.

    1986-01-01

    Using a simultaneously initiated cylindrical explosive, a coaxial magnetic flux-compression generator (FCG) was designed to test high-current-gain limitations. A coaxial design with a lossless gain of approx.100:1 was chosen for its efficiency, relative simplicity, and calculability. Theoretical design included modeling as well as 1-D and 2-D hydrodynamic and MHD calculations. A 69.3-cm cylinder of PBX-9501 high explosive, 20.3 cm in diameter, was used to drive the Al armature into a Cu stator. The initial current supplied by a capacitor bank was approx.3 MA which produced a final current approx.75 MA. Details of the experiment and a comparison with calculations are presented.

  17. 10 CFR Appendix N to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Furnaces and Boilers

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... of Furnaces and Boilers N Appendix N to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Appendix N to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Furnaces... conservation standards for furnaces and boilers at this time. However, any representation related to...

  18. 10 CFR Appendix N to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Furnaces and Boilers

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... of Furnaces and Boilers N Appendix N to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Appendix N to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Furnaces... conservation standards for furnaces and boilers at this time. However, any representation related to...

  19. 10 CFR Appendix N to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Furnaces and Boilers

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... of Furnaces and Boilers N Appendix N to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Appendix N to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Furnaces... not be performed to determine compliance with energy conservation standards for furnaces and...

  20. 10 CFR Appendix Z to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of External Power Supplies

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... established by IEC Standard 62301 for measuring average power or accumulated energy over time for both input... 10 Energy 3 2013-01-01 2013-01-01 false Uniform Test Method for Measuring the Energy Consumption of External Power Supplies Z Appendix Z to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY...

  1. 10 CFR Appendix B to Subpart B of... - Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors B Appendix B to Subpart B of Part 431 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Electric Motors Pt. 431...

  2. 10 CFR 431.224 - Uniform test method for the measurement of energy consumption for traffic signal modules and...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform test method for the measurement of energy consumption for traffic signal modules and pedestrian modules. 431.224 Section 431.224 Energy DEPARTMENT OF... measurement of energy consumption for traffic signal modules and pedestrian modules. (a) Scope. This section...

  3. 10 CFR Appendix H to Subpart B of... - Uniform Test Method for Measuring the Power Consumption of Television Sets

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 802.11-20072) 2 Ethernet (IEEE 802.3). If the TV supports Energy Efficient Ethernet (IEEE 802.3az... 10 Energy 3 2014-01-01 2014-01-01 false Uniform Test Method for Measuring the Power Consumption of Television Sets H Appendix H to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION...

  4. 10 CFR Appendix F to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Room Air Conditioners

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... of Room Air Conditioners F Appendix F to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Appendix F to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Room Air... appendix F) until the compliance date of any amended energy conservation standards for room...

  5. 10 CFR Appendix B to Subpart B of... - Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors B Appendix B to Subpart B of Part 431 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Electric Motors Pt. 431...

  6. 10 CFR Appendix B to Subpart B of... - Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 3 2012-01-01 2012-01-01 false Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors B Appendix B to Subpart B of Part 431 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Electric Motors Pt. 431...

  7. 10 CFR 431.134 - Uniform test methods for the measurement of energy consumption and water consumption of automatic...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Uniform test methods for the measurement of energy consumption and water consumption of automatic commercial ice makers. 431.134 Section 431.134 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Automatic Commercial Ice Makers...

  8. 'Battling my biology': psychological effects of genetic testing for risk of weight gain.

    PubMed

    Meisel, S F; Wardle, J

    2014-04-01

    The availability of genetic tests for multifactorial conditions such as obesity raises concerns that higher-risk results could lead to fatalistic reactions or lower-risk results to complacency. No study has investigated the effects of genetic test feedback for the risk of obesity in non-clinical samples. The present study explored psychological and behavioral reactions to genetic test feedback for a weight related gene (FTO) in a volunteer sample (n = 18) using semi-structured interviews. Respondents perceived the gene test result as scientifically objective; removing some of the emotion attached to the issue of weight control. Those who were struggling with weight control reported relief of self-blame. There was no evidence for either complacency or fatalism; all respondents emphasized the importance of lifestyle choices in long-term weight management, although they recognized the role of both genes and environment. Regardless of the test result, respondents evaluated the testing positively and found it motivating and informative. Genetic test feedback for risk of weight gain may offer psychological benefits beyond its objectively limited clinical utility. As the role of genetic counselors is likely to expand, awareness of reasons for genetic testing for common, complex conditions and reactions to the test result is important.

  9. Design and testing of a uniformly solar energy TIR-R concentration lenses for HCPV systems.

    PubMed

    Shen, S C; Chang, S J; Yeh, C Y; Teng, P C

    2013-11-04

    In this paper, total internal reflection-refraction (TIR-R) concentration (U-TIR-R-C) lens module were designed for uniformity using the energy configuration method to eliminate hot spots on the surface of solar cell and increase conversion efficiency. The design of most current solar concentrators emphasizes the high-power concentration of solar energy, however neglects the conversion inefficiency resulting from hot spots generated by uneven distributions of solar energy concentrated on solar cells. The energy configuration method proposed in this study employs the concept of ray tracing to uniformly distribute solar energy to solar cells through a U-TIR-R-C lens module. The U-TIR-R-C lens module adopted in this study possessed a 76-mm diameter, a 41-mm thickness, concentration ratio of 1134 Suns, 82.6% optical efficiency, and 94.7% uniformity. The experiments demonstrated that the U-TIR-R-C lens module reduced the core temperature of the solar cell from 108 °C to 69 °C and the overall temperature difference from 45 °C to 10 °C, and effectively relative increased the conversion efficiency by approximately 3.8%. Therefore, the U-TIR-R-C lens module designed can effectively concentrate a large area of sunlight onto a small solar cell, and the concentrated solar energy can be evenly distributed in the solar cell to achieve uniform irradiance and effectively eliminate hot spots.

  10. Methodology for the validation of analytical methods involved in uniformity of dosage units tests.

    PubMed

    Rozet, E; Ziemons, E; Marini, R D; Boulanger, B; Hubert, Ph

    2013-01-14

    Validation of analytical methods is required prior to their routine use. In addition, the current implementation of the Quality by Design (QbD) framework in the pharmaceutical industries aims at improving the quality of the end products starting from its early design stage. However, no regulatory guideline or none of the published methodologies to assess method validation propose decision methodologies that effectively take into account the final purpose of developed analytical methods. In this work a solution is proposed for the specific case of validating analytical methods involved in the assessment of the content uniformity or uniformity of dosage units of a batch of pharmaceutical drug products as proposed in the European or US pharmacopoeias. This methodology uses statistical tolerance intervals as decision tools. Moreover it adequately defines the Analytical Target Profile of analytical methods in order to obtain analytical methods that allow to make correct decisions about Content uniformity or uniformity of dosage units with high probability. The applicability of the proposed methodology is further illustrated using an HPLC-UV assay as well as a near infra-red spectrophotometric method.

  11. Evaluation of the Discrepancy between the European Pharmacopoeia Test and an Adopted United States Pharmacopoeia Test Regarding the Weight Uniformity of Scored Tablet Halves: Is Harmonization Required?

    PubMed

    Zaid, Abdel Naser; Ghoush, Abeer Abu; Al-Ramahi, Rowa'; Are'r, Mohammed

    2012-01-01

    The aim of this study was to evaluate whether there exists any discrepancy between the European Pharmacopoeia (Ph. Eur.) and adopted United States Pharmacopeia (USP) tests concerning the weight uniformity measurements of tablet halves after splitting. The USP method does not contain provisions to evaluate split tablets, so here we adopt their whole tablet weight uniformity method. Twenty-nine different commercial scored tablets (local and imported) were divided. The split units were individually weighed and the relative standard deviation (RSD) for each product was calculated and then evaluated according to both the adopted USP and the Ph. Eur. tests of weight uniformity. Twenty out of the 29 products tested failed the USP test, while 14 of them failed the Ph. Eur. test. Nine products passed both the USP and Ph. Eur. tests. Six products passed the Ph. Eur. test but failed the USP test, with all of these products having an RSD greater than 6%. The correlation coefficient between the weight and content of split halves for three randomly selected products-corotenol 100 mg, corotenol 50 mg, and lorazepam 2.5 mg-was found to be 0.986, 0.998, and 0.72, respectively. A clear difference can be seen between outcomes obtained by the two compendial tablet splitting methods with regard to weight uniformity. Results from the USP test showed that tighter measures are needed to pass the test. Our results argue that the Ph. Eur. should revise the existing weight uniformity test on scored tablets to include the RSD parameter in it. The USP should include this adopted test as a specific test for scored tablet halves, not just whole tablets. Manufacturers in some cases will need to improve the quality of the produced scored tablets in order to pass the USP test, especially those with low therapeutic indices. Finally, harmonization between the pharmacopoeias regarding the weight uniformity testing of split tablets is warranted. The aim of this study was to evaluate whether there

  12. Leveraging the test effect to improve maintenance of the gains achieved through cognitive rehabilitation.

    PubMed

    Friedman, Rhonda B; Sullivan, Kelli L; Snider, Sarah F; Luta, George; Jones, Kevin T

    2017-02-01

    An important aspect of the rehabilitation of cognitive and linguistic function subsequent to brain injury is the maintenance of learning beyond the time of initial treatment. Such maintenance is often not satisfactorily achieved. Additional practice, or overtraining, may play a key role in long-term maintenance. In particular, the literature on learning in cognitively intact persons has suggested that it is testing, and not studying, that contributes to maintenance of learning. The present study investigates the hypothesis that continuing to test relearned words in persons with anomia will lead to significantly greater maintenance compared with continuing to study relearned words. The current study combines overtraining with the variable of test versus study in examining the effects of overtesting and overstudying on maintenance of word finding in 3 persons with aphasia. First, treatment successfully reestablished the connections between known items and their names. Once the connections were reestablished (i.e., items could be named successfully), each item was placed into 1 of 4 overtraining conditions: test and study, only test, only study, or no longer test or study. Maintenance was probed at 1 month and 4 months following the end of overtraining. The results are consistent with an advantage of testing compared with studying. All 3 participants showed significantly greater maintenance for words that were overtested than for words that were overstudied. This testing benefit persisted at 1 month and 4 months after completion of the treatment. In fact, there was no clear evidence for any benefit of overstudying. The present study demonstrates that overtesting, but not overstudying, leads to lasting maintenance of language rehabilitation gains in patients with anomia. The implications for the design of other treatment protocols are immense. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  13. Leveraging the Test Effect to Improve Maintenance of the Gains Achieved Through Cognitive Rehabilitation

    PubMed Central

    Friedman, Rhonda B.; Sullivan, Kelli L.; Snider, Sarah F.; Luta, George; Jones, Kevin T.

    2017-01-01

    Objective An important aspect of the rehabilitation of cognitive and linguistic function subsequent to brain injury is the maintenance of learning beyond the time of initial treatment. Such maintenance is often not satisfactorily achieved. Additional practice, or overtraining, may play a key role in long-term maintenance. In particular, the literature on learning in cognitively intact persons has suggested that it is testing, and not studying, that contributes to maintenance of learning. The present study investigates the hypothesis that continuing to test relearned words in persons with anomia will lead to significantly greater maintenance compared with continuing to study relearned words. Method The current study combines overtraining with the variable of test versus study in examining the effects of overtesting and overstudying on maintenance of word finding in 3 persons with aphasia. First, treatment successfully reestablished the connections between known items and their names. Once the connections were reestablished (i.e., items could be named successfully), each item was placed into 1 of 4 overtraining conditions: test and study, only test, only study, or no longer test or study. Maintenance was probed at 1 month and 4 months following the end of overtraining. Results The results are consistent with an advantage of testing compared with studying. All 3 participants showed significantly greater maintenance for words that were overtested than for words that were overstudied. This testing benefit persisted at 1 month and 4 months after completion of the treatment. In fact, there was no clear evidence for any benefit of overstudying. Conclusions The present study demonstrates that overtesting, but not overstudying, leads to lasting maintenance of language rehabilitation gains in patients with anomia. The implications for the design of other treatment protocols are immense. PMID:27732041

  14. Testing CREATE at Community Colleges: An Examination of Faculty Perspectives and Diverse Student Gains

    PubMed Central

    Kenyon, Kristy L.; Onorato, Morgan E.; Gottesman, Alan J.; Hoque, Jamila; Hoskins, Sally G.

    2016-01-01

    CREATE (Consider, Read, Elucidate the hypotheses, Analyze and interpret the data, and Think of the next Experiment) is an innovative pedagogy for teaching science through the intensive analysis of scientific literature. Initiated at the City College of New York, a minority-serving institution, and regionally expanded in the New York/New Jersey/Pennsylvania area, this methodology has had multiple positive impacts on faculty and students in science, technology, engineering, and mathematics courses. To determine whether the CREATE strategy is effective at the community college (2-yr) level, we prepared 2-yr faculty to use CREATE methodologies and investigated CREATE implementation at community colleges in seven regions of the United States. We used outside evaluation combined with pre/postcourse assessments of students to test related hypotheses: 1) workshop-trained 2-yr faculty teach effectively with the CREATE strategy in their first attempt, and 2) 2-yr students in CREATE courses make cognitive and affective gains during their CREATE quarter or semester. Community college students demonstrated positive shifts in experimental design and critical-thinking ability concurrent with gains in attitudes/self-rated learning and maturation of epistemological beliefs about science. PMID:26931399

  15. Very-long-term chromatic adaptation: test of gain theory and a new method.

    PubMed

    Belmore, Suzanne C; Shevell, Steven K

    2008-01-01

    This research had two goals. First, a new method of very-long-term chromatic adaptation was compared to an older method of long-wavelength ambient illumination. In the new method, the observer viewed for 1 h per day for 12 or 14 days a CRT screen composed of oriented lines that appeared red. One observer also replicated a previous procedure (Neitz et al., 2002) in which she was exposed to long-wavelength room illumination for 4 h per day for 14 days. For both methods, equilibrium yellow was measured each day about 20 h after the end of the adaptation period. Both methods of very-long-term chromatic adaptation gave similar results. Second, shifts in equilibrium yellow were measured over a 30:1 range of light levels to determine if changes in color percepts were explained solely by a gain change in cone sensitivities (von Kries coefficient law). The magnitude of shift of equilibrium yellow depended on the level of the test light, which was not consistent with a gain theory of very-long-term chromatic adaptation.

  16. Testing CREATE at Community Colleges: An Examination of Faculty Perspectives and Diverse Student Gains.

    PubMed

    Kenyon, Kristy L; Onorato, Morgan E; Gottesman, Alan J; Hoque, Jamila; Hoskins, Sally G

    2016-01-01

    CREATE (Consider, Read, Elucidate the hypotheses, Analyze and interpret the data, and Think of the next Experiment) is an innovative pedagogy for teaching science through the intensive analysis of scientific literature. Initiated at the City College of New York, a minority-serving institution, and regionally expanded in the New York/New Jersey/Pennsylvania area, this methodology has had multiple positive impacts on faculty and students in science, technology, engineering, and mathematics courses. To determine whether the CREATE strategy is effective at the community college (2-yr) level, we prepared 2-yr faculty to use CREATE methodologies and investigated CREATE implementation at community colleges in seven regions of the United States. We used outside evaluation combined with pre/postcourse assessments of students to test related hypotheses: 1) workshop-trained 2-yr faculty teach effectively with the CREATE strategy in their first attempt, and 2) 2-yr students in CREATE courses make cognitive and affective gains during their CREATE quarter or semester. Community college students demonstrated positive shifts in experimental design and critical-thinking ability concurrent with gains in attitudes/self-rated learning and maturation of epistemological beliefs about science.

  17. 34 CFR 462.4 - What are the transition rules for using tests to measure educational gain for the National...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... measure educational gain for the National Reporting System for Adult Education (NRS)? 462.4 Section 462.4... ADULT EDUCATION, DEPARTMENT OF EDUCATION MEASURING EDUCATIONAL GAIN IN THE NATIONAL REPORTING SYSTEM FOR ADULT EDUCATION General § 462.4 What are the transition rules for using tests to measure...

  18. 34 CFR 462.4 - What are the transition rules for using tests to measure educational gain for the National...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... measure educational gain for the National Reporting System for Adult Education (NRS)? 462.4 Section 462.4... ADULT EDUCATION, DEPARTMENT OF EDUCATION MEASURING EDUCATIONAL GAIN IN THE NATIONAL REPORTING SYSTEM FOR ADULT EDUCATION General § 462.4 What are the transition rules for using tests to measure...

  19. 34 CFR 462.4 - What are the transition rules for using tests to measure educational gain for the National...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... measure educational gain for the National Reporting System for Adult Education (NRS)? 462.4 Section 462.4... ADULT EDUCATION, DEPARTMENT OF EDUCATION MEASURING EDUCATIONAL GAIN IN THE NATIONAL REPORTING SYSTEM FOR ADULT EDUCATION General § 462.4 What are the transition rules for using tests to measure...

  20. 34 CFR 462.4 - What are the transition rules for using tests to measure educational gain for the National...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... measure educational gain for the National Reporting System for Adult Education (NRS)? 462.4 Section 462.4... ADULT EDUCATION, DEPARTMENT OF EDUCATION MEASURING EDUCATIONAL GAIN IN THE NATIONAL REPORTING SYSTEM FOR ADULT EDUCATION General § 462.4 What are the transition rules for using tests to measure...

  1. 34 CFR 462.4 - What are the transition rules for using tests to measure educational gain for the National...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... measure educational gain for the National Reporting System for Adult Education (NRS)? 462.4 Section 462.4... ADULT EDUCATION, DEPARTMENT OF EDUCATION MEASURING EDUCATIONAL GAIN IN THE NATIONAL REPORTING SYSTEM FOR ADULT EDUCATION General § 462.4 What are the transition rules for using tests to measure...

  2. Uniform Dust Distributor for Testing Radiative Emittance of Dust-Coated Surfaces

    NASA Technical Reports Server (NTRS)

    Hurlbert, Kathryn Miller; Witte, Larry C.; Hollingsworth, D. Keith

    2012-01-01

    This apparatus distributes dust (typical of the Martian surface) in a uniform fashion on the surface of multiple samples simultaneously. The primary innovation is that the amount of dust deposited on the multiple surfaces can be controlled by the time that the apparatus operates, and each sample will be subject to the same amount of dust deposition. The exact weight of dust that is added per unit of sample area is determined by the use of slides that can be removed sequentially after each dusting.

  3. Thermal comfort conditions in the NBS/DoE direct gain passive solar test facility

    NASA Astrophysics Data System (ADS)

    Liu, S. T.

    1982-12-01

    The thermal comfort conditions in a direct gain cell of passive solar test facility were analyzed. It was found that the daytime operative temperature as measured by the black globe temperature sensors in an area near the large south glazing exceeded the upper boundary of the ASHRAE comfort envelope by a large amount in a clear day during both the thermal transition month of October and the cold winter month of January. The reflected solar radiation from the interior surfaces and the snow covered ground plays a significant role on the measured black globe temperature and should be included in the computation of the mean radiant temperature for a space with large glazed areas.

  4. Psychological responses to genetic testing for weight gain: a vignette study.

    PubMed

    Meisel, Susanne F; Walker, Catherine; Wardle, Jane

    2012-03-01

    Genetic testing for obesity risk is increasingly available to the public but few studies have examined motivational or affective reactions. Here we report findings from a "vignette" study investigating reactions to "higher-risk" and "average-risk" results for the obesity-related FTO gene in two groups: a panel sample of individuals with weight concerns, for whom testing may have treatment implications (n = 306, mean age = 45 years, mean BMI = 35) and a student sample (n = 395, mean age = 25 years, mean BMI = 23), for whom testing would have implications for obesity prevention. Participants were given FTO gene information that described higher-risk alleles as linked with modest weight gain and slightly higher risk of obesity. They responded to both higher- and average-risk vignettes, with order randomized. Interest in genetic testing was high overall, and higher in panel respondents than students (93% vs. 78% would "probably" or "definitely" have the test; P < 0.001). In students, a higher-risk result generated higher motivation to change (d = 0.15; P < 0.001), but also slightly higher negative affect (d = 0.03, P < 0.001) and fatalism (d = 0.05, P < 0.001) than an average-risk result. Panel respondents also had higher motivation to change (d = 0.17, P < 0.001) as well as relief about having an explanation for their body weight (d = 0.02, P = 0.013) in the higher-risk condition, but no increase in fatalism or depression. These results suggest that at the level of anticipated responses to FTO gene feedback, higher-risk results had positive motivational effects with minimal changes in negative affect or fatalism. Genetic testing has the potential to be a useful clinical or preventive tool when combined with appropriate information.

  5. Self-Reported Learning Gains: A Theory and Test of College Student Survey Response

    ERIC Educational Resources Information Center

    Porter, Stephen R.

    2013-01-01

    Recent studies have asserted that self-reported learning gains (SRLG) are valid measures of learning, because gains in specific content areas vary across academic disciplines as theoretically predicted. In contrast, other studies find no relationship between actual and self-reported gains in learning, calling into question the validity of SRLG. I…

  6. 10 CFR Appendix G to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Unvented Home Heating Equipment

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Energy Consumption..., App. G Appendix G to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of... energy consumption for primary electric heaters. For primary electric heaters, calculate the annual...

  7. 10 CFR Appendix V to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan Light Kits

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan Light Kits V Appendix V to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Appendix V to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan...

  8. Uniform engine testing program. Phase 1: NASA Lewis Research Center participation

    NASA Technical Reports Server (NTRS)

    Blesiadny, T.; Burkardt, L.; Braithwaite, W.

    1982-01-01

    Two jet engines were tested under identical conditions in a variety of altitude and ground level facilities as a means to correlating these facilities. Two J57-19W turbojet engines were tested in an altitude test facility. The test results are summarized.

  9. Mineral composition of small-grain cultivars from a uniform test plot in South Dakota

    USGS Publications Warehouse

    Erdman, J.A.; Moul, R.C.

    1982-01-01

    Seventy-five cultivated varieties (cultivars) of hard red spring wheat (HRS), hard red winter wheat (HRW), durum wheat, oats, and barley were harvested in 1974 from a small-grain trial plot in Harding County, SD, just north of Buffalo. Analysis of the grains reported here includes crude protein for only the wheat cultivars, ash yield, and 17 chemical elements, many of which are not commonly given in the literature (such as B, Cd, Mo, Ni, and Se). Differences in composition between the two classes of hard red wheat indicate that HRS is significantly higher (p < 0.05) than HRW in protein content, ash yield, Ca, K, Mg, Na, P, total S, Sr, and Zn; Cd is significantly higher in the HRW cultivars. For the most part, concentrations were quite uniform within all grain types. Only two cultivars were anomalous: cv. Hi Plains in HRW wheats and cv. Astro in the oat group.

  10. Effect of non-uniform thickness of samples in stress relaxation tests under unconfined compression of samples of articular discs.

    PubMed

    Commisso, Maria S; Martínez-Reina, Javier; Mayo, Juana; Domínguez, Jaime; Tanaka, Eiji

    2014-04-11

    A precise information of the biomechanical properties of soft tissues is required to develop a suitable simulation model, with which the distribution of stress and strain in the complex structures can be estimated. Many soft tissues have been mechanically characterized by stress relaxation tests under unconfined or confined compression. In general, full-thickness samples are extracted to reduce the damage in the tissue as much as possible. However, it is not guaranteed that these samples have a uniform thickness or, in other words, planar parallel faces. In particular, in the articular disc of the temporomandibular joint, many studies can be found testing full-thickness samples for which that thickness is known to be non-uniform, while making the assumption of uniaxial stress state to extract the mechanical properties from those tests. That inaccuracy may have a strong influence in some cases and needs a profound revision. The main goal of this work is to quantify the error committed in that assumption and the influence of the variation of thickness on that error in a particular test: stress relaxation tests under unconfined compression. Based on this error and defining an allowable tolerance, a criterion is established to reject samples depending on their aspect ratio. Copyright © 2014 Elsevier Ltd. All rights reserved.

  11. Differential Rearing Alters Forced Swim Test Behavior, Fluoxetine Efficacy, and Post-Test Weight Gain in Male Rats.

    PubMed

    Arndt, David L; Peterson, Christy J; Cain, Mary E

    2015-01-01

    Environmental factors play a key role in the etiology of depression. The rodent forced swim test (FST) is commonly used as a preclinical model of depression, with increases in escape-directed behavior reflecting antidepressant effects, and increases in immobility reflecting behavioral despair. Environmental enrichment leads to serotonergic alterations in rats, but it is unknown whether these alterations may influence the efficacy of common antidepressants. Male Sprague-Dawley rats were reared in enriched (EC), standard (SC), or isolated (IC) conditions. Following the rearing period, fluoxetine (10 or 20 mg/kg, i.p.) was administered 23.5 hrs, 5 hrs, and 1 hr before locomotor and FST measures. Following locomotor testing and FST exposure, rats were weighed to assess fluoxetine-, FST-, and environmental condition-induced moderations in weight gain. Results revealed an antidepressant effect of environmental enrichment and a depressant effect of isolation. Regardless of significant fluoxetine effects on locomotor activity, fluoxetine generally decreased swimming and increased immobility in all three environmental conditions, with IC-fluoxetine (10 mg/kg) rats and EC-fluoxetine (20 mg/kg) rats swimming less than vehicle counterparts. Subchronic 20 mg/kg fluoxetine also induced significant weight loss, and differential rearing appeared to moderate weight gain following FST stress. These results suggest that differential rearing has the ability to alter FST behaviors, fluoxetine efficacy, and post-stressor well-being. Moreover, 20 mg/kg fluoxetine, administered subchronically, may lead to atypical effects of those commonly observed in the FST, highlighting the importance and impact of both environmental condition and dosing regimen in common animal models of depression.

  12. Differential Rearing Alters Forced Swim Test Behavior, Fluoxetine Efficacy, and Post-Test Weight Gain in Male Rats

    PubMed Central

    Arndt, David L.; Peterson, Christy J.; Cain, Mary E.

    2015-01-01

    Environmental factors play a key role in the etiology of depression. The rodent forced swim test (FST) is commonly used as a preclinical model of depression, with increases in escape-directed behavior reflecting antidepressant effects, and increases in immobility reflecting behavioral despair. Environmental enrichment leads to serotonergic alterations in rats, but it is unknown whether these alterations may influence the efficacy of common antidepressants. Male Sprague-Dawley rats were reared in enriched (EC), standard (SC), or isolated (IC) conditions. Following the rearing period, fluoxetine (10 or 20 mg/kg, i.p.) was administered 23.5 hrs, 5 hrs, and 1 hr before locomotor and FST measures. Following locomotor testing and FST exposure, rats were weighed to assess fluoxetine-, FST-, and environmental condition-induced moderations in weight gain. Results revealed an antidepressant effect of environmental enrichment and a depressant effect of isolation. Regardless of significant fluoxetine effects on locomotor activity, fluoxetine generally decreased swimming and increased immobility in all three environmental conditions, with IC-fluoxetine (10 mg/kg) rats and EC-fluoxetine (20 mg/kg) rats swimming less than vehicle counterparts. Subchronic 20 mg/kg fluoxetine also induced significant weight loss, and differential rearing appeared to moderate weight gain following FST stress. These results suggest that differential rearing has the ability to alter FST behaviors, fluoxetine efficacy, and post-stressor well-being. Moreover, 20 mg/kg fluoxetine, administered subchronically, may lead to atypical effects of those commonly observed in the FST, highlighting the importance and impact of both environmental condition and dosing regimen in common animal models of depression. PMID:26154768

  13. Uniformly Most Powerful Tests for Simultaneously Detecting a Treatment Effect in the Overall Population and at Least One Subpopulation.

    PubMed

    Rosenblum, Michael

    2014-12-01

    We take the perspective of a researcher planning a randomized trial of a new treatment, where it is suspected that certain subpopulations may benefit more than others. These subpopulations could be defined by a risk factor or biomarker measured at baseline. We focus on situations where the overall population is partitioned into two, predefined subpopulations. When the true average treatment effect for the overall population is positive, it logically follows that it must be positive for at least one subpopulation. Our goal is to construct multiple testing procedures that maximize power for simultaneously rejecting the overall population null hypothesis and at least one subpopulation null hypothesis. We show that uniformly most powerful tests exist for this problem, in the case where outcomes are normally distributed. We construct new multiple testing procedures that, to the best of our knowledge, are the first to have this property. These procedures have the advantage of not requiring any sacrifice for detecting a treatment effect in the overall population, compared to the uniformly most powerful test of the overall population null hypothesis.

  14. A technique to achieve uniform stress distribution in compressive creep testing of advanced ceramics at high temperatures

    SciTech Connect

    Liu, K.C.; Stevens, C.O.; Brinkman, C.R.; Holshauser, N.E.

    1996-05-01

    A technique to achieve stable and uniform uniaxial compression is offered for creep testing of advanced ceramic materials at elevated temperatures, using an innovative self-aligning load-train assembly. Excellent load-train alignment is attributed to the inherent ability of a unique hydraulic universal coupler to maintain self-aligning. Details of key elements, design concept, and pricniples of operation of the self-aligning coupler are described. A method of alignment verification using a strain-gaged specimen is then discussed. Results of verification tests indicate that bending below 1.5% is routinely achievable usin the load-train system. A successful compression creep test is demonstrated using a dumbbell-shpaed Si nitride specimen tested at 1300 C for over 4000 h.

  15. Beyond the Uniformity Myth: A Comparison of Academically Successful and Unsuccessful Test-Anxious College Students.

    ERIC Educational Resources Information Center

    Brown, Steven D.; Nelson, Tamara L.

    1983-01-01

    Studied factors that might differentially underlie test anxiety and academic performance of college students (N=72). Results revealed that high anxious students differed from low anxious students on traditional cognitive and somatic indicators of text anxiety but not on any measure of study or test-taking skills. (WAS)

  16. High-gain test facility driven by a multimegajoule solid-state laser

    SciTech Connect

    Powell, H.T.; Manes, K.R.; Hogan, W.J.

    1986-01-01

    An ICF high-gain test facility (HGTF) will most certainly be in demand for other applications than ICF target physics. These will include advanced weapon physics, vulnerability and nuclear effects, and x-ray laser studies. These other applications will place additional demands on driver flexibility and will extend the desirable range of some of the driver variables (e.g., the desirable pulse length range would be 0.1 to 100 ns and the wavelength range would be 0.25 to 1.0 ..mu..m). It is also likely that to utilize the driver efficiently for the variety of applications foreseen will require multiple target chambers and experiment areas. Thus, it is important that the driver beams be efficiently transported to these different experimental areas. At the present time, the only driver capable of meeting this broad set of requirements is the Nd:glass laser. It has long been believed that an Nd:glass laser with the above requirements could be built but that it would be unreasonably expensive. There is still much work to be done. However, the progress to date and the track record for lowering system cost in past solid-state facilities, leads us to be optimistic that we can achieve our goal of building an affordable HGTF that will meet all the requirements.

  17. Motor-evoked potential gain is a helpful test for the detection of corticospinal tract dysfunction in amyotrophic lateral sclerosis.

    PubMed

    Duclos, Y; Grapperon, A M; Jouve, E; Truillet, R; Zemmour, C; Verschueren, A; Pouget, J; Attarian, S

    2017-02-01

    The detection of upper motor neuron (UMN) dysfunction is necessary for the diagnosis of amyotrophic lateral sclerosis (ALS). However, signs of UMN dysfunction may be difficult to establish. This study aimed to determine whether motor-evoked potential (MEP) gain (MEP area/background electromyographic activity) represents an efficient alternative to assess UMN dysfunction. MEP area, MEP/compound muscle action potential (CMAP) area ratio, and MEP gain were tested at different force levels in healthy control subjects and ALS patients. Receiver operating characteristic (ROC) curve analyses was used to determine the diagnostic utility of MEP gain and compare it to alternative techniques, namely, diffusion tensor imaging (DTI) and the triple stimulation technique (TST). MEP gain revealed a significant difference between the patients and healthy control subjects in contrast to MEP area and MEP/CMAP area ratio. The diagnostic utility of MEP gain was comparable with that of TST and superior to that of DTI. MEP gain can distinguish ALS patients from control subjects and may be helpful for the diagnosis of ALS. MEP gain appears to be a useful adjunct test and noninvasive method for the assessment of corticospinal dysfunction. Copyright © 2016 International Federation of Clinical Neurophysiology. Published by Elsevier B.V. All rights reserved.

  18. Refixation Saccades with Normal Gain Values: A Diagnostic Problem in the Video Head Impulse Test: A Case Report

    PubMed Central

    Korsager, Leise Elisabeth Hviid; Faber, Christian Emil; Schmidt, Jesper Hvass; Wanscher, Jens Højberg

    2017-01-01

    Refixation saccades with normal gain value occur more frequently with increasing age. The phenomenon has also been observed in different vestibular disorders. In this case, we present a young male with normal gain value and refixation saccades tested with the video head impulse test (vHIT) the day after his cochlear implantation. One month after surgery, refixation saccades were no longer present. This suggests that refixation saccades can occur as a result of temporary pathology such as surgery. Refixation saccades with normal gain values might reflect a partial deficit in the vestibulo-ocular reflex. However, this partial deficit is in conflict with the current way of interpreting vHIT results in which the vestibular function is classified as either normal or pathological based only on the gain value. Refixation saccades, which are evident signs of vestibulopathy, are not considered in the evaluation. A new way of interpreting the vHIT based on the saccades must be considered. PMID:28352247

  19. Refixation Saccades with Normal Gain Values: A Diagnostic Problem in the Video Head Impulse Test: A Case Report.

    PubMed

    Korsager, Leise Elisabeth Hviid; Faber, Christian Emil; Schmidt, Jesper Hvass; Wanscher, Jens Højberg

    2017-01-01

    Refixation saccades with normal gain value occur more frequently with increasing age. The phenomenon has also been observed in different vestibular disorders. In this case, we present a young male with normal gain value and refixation saccades tested with the video head impulse test (vHIT) the day after his cochlear implantation. One month after surgery, refixation saccades were no longer present. This suggests that refixation saccades can occur as a result of temporary pathology such as surgery. Refixation saccades with normal gain values might reflect a partial deficit in the vestibulo-ocular reflex. However, this partial deficit is in conflict with the current way of interpreting vHIT results in which the vestibular function is classified as either normal or pathological based only on the gain value. Refixation saccades, which are evident signs of vestibulopathy, are not considered in the evaluation. A new way of interpreting the vHIT based on the saccades must be considered.

  20. Error Rates in Measuring Teacher and School Performance Based on Student Test Score Gains. NCEE 2010-4004

    ERIC Educational Resources Information Center

    Schochet, Peter Z.; Chiang, Hanley S.

    2010-01-01

    This paper addresses likely error rates for measuring teacher and school performance in the upper elementary grades using value-added models applied to student test score gain data. Using realistic performance measurement system schemes based on hypothesis testing, we develop error rate formulas based on OLS and Empirical Bayes estimators.…

  1. Testing multistage gain and offset trimming in a single photon counting IC with a charge sharing elimination algorithm

    NASA Astrophysics Data System (ADS)

    Krzyżanowska, A.; Gryboś, P.; Szczygieł, R.; Maj, P.

    2015-12-01

    with experimental results and an algorithm for proper gain and offset trimming for better uniformity of the pixel matrix.

  2. Columbia University flow instability experimental program: Volume 2. Single tube uniformly heated tests -- Part 2: Uncertainty analysis and data

    SciTech Connect

    Dougherty, T.; Maciuca, C.; McAssey, E.V. Jr.; Reddy, D.G.; Yang, B.W.

    1990-05-01

    In June 1988, Savannah River Laboratory requested that the Heat Transfer Research Facility modify the flow excursion program, which had been in progress since November 1987, to include testing of single tubes in vertical down-flow over a range of length to diameter (L/D) ratios of 100 to 500. The impetus for the request was the desire to obtain experimental data as quickly as possible for code development work. In July 1988, HTRF submitted a proposal to SRL indicating that by modifying a facility already under construction the data could be obtained within three to four months. In January 1990, HTFR issued report CU-HTRF-T4, part 1. This report contained the technical discussion of the results from the single tube uniformly heated tests. The present report is part 2 of CU-HTRF-T4 which contains further discussion of the uncertainty analysis and the complete set of data.

  3. Sensation Seeking as a Moderator of Gain- and Loss-Framed HIV-Test Promotion Message Effects.

    PubMed

    Hull, Shawnika J; Hong, Yangsun

    2016-01-01

    This study used an experiment (N = 504) to test whether the fit between sensation-seeking disposition and frame enhances the persuasiveness of gain- and loss-framed HIV test promotion messages. Gain- and loss-framed messages may be consistent with low and high sensation seekers' disposition with respect to risk behavior. We hypothesized that a loss-framed message would be more persuasive for high sensation seekers and that a gain-framed message should be more effective for low sensation seekers. We also expected elaboration to mediate the interaction. Results demonstrated the hypothesized interaction. When the message frame fit with the viewer's way of thinking, the persuasive power of the message was enhanced. The mediation hypothesis was not supported. Practical implications for targeting and message design are discussed.

  4. Supplemental Educational Services and Student Test Score Gains: Evidence from a Large, Urban School District. Working Paper

    ERIC Educational Resources Information Center

    Springer, Matthew G.; Pepper, Matthew J.; Ghosh-Dastidar, Bonnie

    2009-01-01

    This study examines the effect of supplemental educational services (SES) on student test score gains and whether particular subgroups of students benefit more from No Child Left Behind (NCLB) tutoring services. The sample used includes information on students enrolled in 3rd through 8th grades nested in 121 elementary and middle schools over a…

  5. Drug testing and flow cytometry analysis on a large number of uniform sized tumor spheroids using a microfluidic device

    NASA Astrophysics Data System (ADS)

    Patra, Bishnubrata; Peng, Chien-Chung; Liao, Wei-Hao; Lee, Chau-Hwang; Tung, Yi-Chung

    2016-02-01

    Three-dimensional (3D) tumor spheroid possesses great potential as an in vitro model to improve predictive capacity for pre-clinical drug testing. In this paper, we combine advantages of flow cytometry and microfluidics to perform drug testing and analysis on a large number (5000) of uniform sized tumor spheroids. The spheroids are formed, cultured, and treated with drugs inside a microfluidic device. The spheroids can then be harvested from the device without tedious operation. Due to the ample cell numbers, the spheroids can be dissociated into single cells for flow cytometry analysis. Flow cytometry provides statistical information in single cell resolution that makes it feasible to better investigate drug functions on the cells in more in vivo-like 3D formation. In the experiments, human hepatocellular carcinoma cells (HepG2) are exploited to form tumor spheroids within the microfluidic device, and three anti-cancer drugs: Cisplatin, Resveratrol, and Tirapazamine (TPZ), and their combinations are tested on the tumor spheroids with two different sizes. The experimental results suggest the cell culture format (2D monolayer vs. 3D spheroid) and spheroid size play critical roles in drug responses, and also demonstrate the advantages of bridging the two techniques in pharmaceutical drug screening applications.

  6. Drug testing and flow cytometry analysis on a large number of uniform sized tumor spheroids using a microfluidic device

    PubMed Central

    Patra, Bishnubrata; Peng, Chien-Chung; Liao, Wei-Hao; Lee, Chau-Hwang; Tung, Yi-Chung

    2016-01-01

    Three-dimensional (3D) tumor spheroid possesses great potential as an in vitro model to improve predictive capacity for pre-clinical drug testing. In this paper, we combine advantages of flow cytometry and microfluidics to perform drug testing and analysis on a large number (5000) of uniform sized tumor spheroids. The spheroids are formed, cultured, and treated with drugs inside a microfluidic device. The spheroids can then be harvested from the device without tedious operation. Due to the ample cell numbers, the spheroids can be dissociated into single cells for flow cytometry analysis. Flow cytometry provides statistical information in single cell resolution that makes it feasible to better investigate drug functions on the cells in more in vivo-like 3D formation. In the experiments, human hepatocellular carcinoma cells (HepG2) are exploited to form tumor spheroids within the microfluidic device, and three anti-cancer drugs: Cisplatin, Resveratrol, and Tirapazamine (TPZ), and their combinations are tested on the tumor spheroids with two different sizes. The experimental results suggest the cell culture format (2D monolayer vs. 3D spheroid) and spheroid size play critical roles in drug responses, and also demonstrate the advantages of bridging the two techniques in pharmaceutical drug screening applications. PMID:26877244

  7. Gain length dependence on phase shake in the VUV-FEL at the TESLA Test Facility

    SciTech Connect

    Pflueger, J.; Pierini, P.

    1995-12-31

    The TTF VUV FEL, which is in its design stage at DESY, consists of a 30 m long SASE FEL which will radiate around 6 nm, driven by a superconducting linac with final energy of 1 GeV. One of the important issues in its design is the undulator performance, which is studied in this paper. The present setup, including FODO lattice, is discussed in this paper. Results of simulations, including the realistic wiggler field errors and beam stearing, are presented. Dependence of the performance, in particular the gain and saturation length as well as the saturation peak power, on the wiggler field errors is discussed.

  8. Potential gains in lifetime net merit from genomic testing of cows, heifers, and calves on commercial dairy farms.

    PubMed

    Weigel, K A; Hoffman, P C; Herring, W; Lawlor, T J

    2012-04-01

    The objective of this study was to quantify the gains in genetic potential of replacement females that could be achieved by using genomic testing to facilitate selection and culling decisions on commercial dairy farms. Data were simulated for 100 commercial dairy herds, each with 1,850 cows, heifers, and calves. Parameters of the simulation were based on the US Holstein population, and assumed reliabilities of traditional and genomic predictions matched reliabilities of animals that have been genotyped to date. Selection of the top 10, 20, 30, …, 90% of animals within each age group was based on parent averages and predicted transmitting abilities with or without genomic testing of all animals or subsets of animals that had been presorted by traditional predictions. Average gains in lifetime net merit breeding value of selected females due to genomic testing, minus prorated costs of genotyping the animals and their unselected contemporaries, ranged from $28 (top 90% selected) to $259 (top 20% selected) for heifer calves with no pedigrees, $14 (top 90% selected) to $121 (top 10% selected) for heifer calves with known sires, and $7 (top 90% selected) to $87 (top 20% selected) for heifer calves with full pedigrees. In most cases, gains in genetic merit of selected heifer calves far exceeded prorated genotyping costs, and gains were greater for animals with missing or incomplete pedigree information. Gains in genetic merit due to genomic testing were smaller for lactating cows that had phenotypic records, and in many cases, these gains barely exceeded or failed to exceed genotyping costs. Strategies based on selective genotyping of the top, middle, or bottom 50% of animals after presorting by traditional parent averages or predicted transmitting abilities were cost effective, particularly when pedigrees or phenotypes were available and a relatively small proportion of animals were to be selected or culled. Based on these results, it appears that routine genotyping of

  9. 10 CFR Appendix G to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Unvented Home Heating Equipment

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... fuel input (PF) of the heater under test in Btu's per hour. The energy flow instrumentation shall... 10 Energy 3 2011-01-01 2011-01-01 false Uniform Test Method for Measuring the Energy Consumption of Unvented Home Heating Equipment G Appendix G to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY...

  10. 10 CFR Appendix A1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Electric Refrigerators and Electric...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Energy Consumption... the Energy Consumption of Electric Refrigerators and Electric Refrigerator-Freezers 1. Definitions 1.1... these test results shall be used to determine energy consumption. If the compartment temperature...

  11. 10 CFR Appendix M to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Central Air Conditioners and Heat Pumps

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Uniform Test Method for Measuring the Energy Consumption of Central Air Conditioners and Heat Pumps M Appendix M to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. M Appendix M to Subpart B...

  12. 10 CFR Appendix T to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals T Appendix T to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. T Appendix T to Subpart B of Part...

  13. 10 CFR 431.304 - Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... consumption of walk-in coolers and walk-in freezers. 431.304 Section 431.304 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Walk-in Coolers and Walk-in Freezers Test Procedures § 431.304 Uniform test method for the measurement of...

  14. 10 CFR 431.304 - Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... consumption of walk-in coolers and walk-in freezers. 431.304 Section 431.304 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Walk-in Coolers and Walk-in Freezers Test Procedures § 431.304 Uniform test method for the measurement of...

  15. 10 CFR Appendix T to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 3 2012-01-01 2012-01-01 false Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals T Appendix T to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App....

  16. 10 CFR Appendix T to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 3 2014-01-01 2014-01-01 false Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals T Appendix T to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App....

  17. 10 CFR Appendix T to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Water Closets and Urinals T Appendix T to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430, Subpt. B, App. T Appendix T to Subpart B of Part 430—Uniform Test Method for Measuring the Water Consumption of...

  18. 10 CFR 431.304 - Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 3 2011-01-01 2011-01-01 false Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in freezers. 431.304 Section 431.304 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Walk-in Coolers and Walk-in Freezers Test Procedures...

  19. Development and Pilot Testing of the Eating4two Mobile Phone App to Monitor Gestational Weight Gain

    PubMed Central

    Davis, Deborah Lee; Williams, Lauren; Davey, Rachel; Cox, Robert; Clarke, Adam

    2015-01-01

    Background The number of pregnant women with a body mass index (BMI) of 30kg/m2 or more is increasing, which has important implications for antenatal care. Various resource-intensive interventions have attempted to assist women in managing their weight gain during pregnancy with limited success. A mobile phone app has been proposed as a convenient and cost-effective alternative to face-to-face interventions. Objective This paper describes the process of developing and pilot testing the Eating4Two app, which aims to provide women with a simple gestational weight gain (GWG) calculator, general dietary information, and the motivation to achieve a healthy weight gain during pregnancy. Methods The project involved the development of app components, including a graphing function that allows the user to record their weight throughout the pregnancy and to receive real-time feedback on weight gain progress and general information on antenatal nutrition. Stakeholder consultation was used to inform development. The app was pilot tested with 10 pregnant women using a mixed method approach via an online survey, 2 focus groups, and 1 individual interview. Results The Eating4Two app took 7 months to develop and evaluate. It involved several disciplines--including nutrition and dietetics, midwifery, public health, and information technology--at the University of Canberra. Participants found the Eating4Two app to be a motivational tool but would have liked scales or other markers on the graph that demonstrated exact weight gain. They also liked the nutrition information; however, many felt it should be formatted in a more user friendly way. Conclusions The Eating4Two app was viewed by participants in our study as an innovative support system to help motivate healthy behaviors during pregnancy and as a credible resource for accessing nutrition-focused information. The feedback provided by participants will assist with refining the current prototype for use in a clinical intervention

  20. ATM mutations uniformly lead to ATM dysfunction in chronic lymphocytic leukemia: application of functional test using doxorubicin

    PubMed Central

    Navrkalova, Veronika; Sebejova, Ludmila; Zemanova, Jana; Kminkova, Jana; Kubesova, Blanka; Malcikova, Jitka; Mraz, Marek; Smardova, Jana; Pavlova, Sarka; Doubek, Michael; Brychtova, Yvona; Potesil, David; Nemethova, Veronika; Mayer, Jiri; Pospisilova, Sarka; Trbusek, Martin

    2013-01-01

    ATM abnormalities are frequent in chronic lymphocytic leukemia and represent an important prognostic factor. Sole 11q deletion does not result in ATM inactivation by contrast to biallelic defects involving mutations. Therefore, the analysis of ATM mutations and their functional impact is crucial. In this study, we analyzed ATM mutations in predominantly high-risk patients using: i) resequencing microarray and direct sequencing; ii) Western blot for total ATM level; iii) functional test based on p21 gene induction after parallel treatment of leukemic cells with fludarabine and doxorubicin. ATM dysfunction leads to impaired p21 induction after doxorubicin exposure. We detected ATM mutation in 16% (22 of 140) of patients, and all mutated samples manifested demonstrable ATM defect (impaired p21 upregulation after doxorubicin and/or null protein level). Loss of ATM function in mutated samples was also evidenced through defective p53 pathway activation after ionizing radiation exposure. ATM mutation frequency was 34% in patients with 11q deletion, 4% in the TP53-defected group, and 8% in wild-type patients. Our functional test, convenient for routine use, showed high sensitivity (80%) and specificity (97%) for ATM mutations prediction. Only cells with ATM mutation, but not those with sole 11q deletion, were resistant to doxorubicin. As far as fludarabine is concerned, this difference was not observed. Interestingly, patients from both these groups experienced nearly identical time to first treatment. In conclusion, ATM mutations either alone or in combination with 11q deletion uniformly led to demonstrable ATM dysfunction in patients with chronic lymphocytic leukemia and mutation presence can be predicted by the functional test using doxorubicin. PMID:23585524

  1. ATM mutations uniformly lead to ATM dysfunction in chronic lymphocytic leukemia: application of functional test using doxorubicin.

    PubMed

    Navrkalova, Veronika; Sebejova, Ludmila; Zemanova, Jana; Kminkova, Jana; Kubesova, Blanka; Malcikova, Jitka; Mraz, Marek; Smardova, Jana; Pavlova, Sarka; Doubek, Michael; Brychtova, Yvona; Potesil, David; Nemethova, Veronika; Mayer, Jiri; Pospisilova, Sarka; Trbusek, Martin

    2013-07-01

    ATM abnormalities are frequent in chronic lymphocytic leukemia and represent an important prognostic factor. Sole 11q deletion does not result in ATM inactivation by contrast to biallelic defects involving mutations. Therefore, the analysis of ATM mutations and their functional impact is crucial. In this study, we analyzed ATM mutations in predominantly high-risk patients using: i) resequencing microarray and direct sequencing; ii) Western blot for total ATM level; iii) functional test based on p21 gene induction after parallel treatment of leukemic cells with fludarabine and doxorubicin. ATM dysfunction leads to impaired p21 induction after doxorubicin exposure. We detected ATM mutation in 16% (22 of 140) of patients, and all mutated samples manifested demonstrable ATM defect (impaired p21 upregulation after doxorubicin and/or null protein level). Loss of ATM function in mutated samples was also evidenced through defective p53 pathway activation after ionizing radiation exposure. ATM mutation frequency was 34% in patients with 11q deletion, 4% in the TP53-defected group, and 8% in wild-type patients. Our functional test, convenient for routine use, showed high sensitivity (80%) and specificity (97%) for ATM mutations prediction. Only cells with ATM mutation, but not those with sole 11q deletion, were resistant to doxorubicin. As far as fludarabine is concerned, this difference was not observed. Interestingly, patients from both these groups experienced nearly identical time to first treatment. In conclusion, ATM mutations either alone or in combination with 11q deletion uniformly led to demonstrable ATM dysfunction in patients with chronic lymphocytic leukemia and mutation presence can be predicted by the functional test using doxorubicin.

  2. Spectrophotometric Determination of Risedronate in Pharmaceutical Formulations via Complex Formation with Cu (II) Ions: Application to Content Uniformity Testing

    PubMed Central

    Walash, M. I.; Metwally, M. E.-S.; Eid, M.; El-Shaheny, R. N.

    2008-01-01

    A simple, sensitive, rapid and accurate spectrophotometric method was developed for the determination of risedronate, a bisphosphonate drug important for the treatment of a variety of bone diseases, in raw material and pharmaceutical formulations. The proposed method is based on complex formation between risedronate and Cu (II) ions in acetate buffer of pH5.5. The optimum conditions for this reaction were ascertained and a spectrophotometric method was developed for the determination of risedronate in concentration range of 2-40 μg/mL with detection limit of 0.03 μg/mL (9.51 × 10-8 mol/L). The molar absorbtivity was 8.00 × 103 l/mol/cm. The method was successfully applied for the determination of risedronate in tablet dosage form with mean percentage recovery of 101.04 ± 0.32. The results obtained were favorably compared with those obtained by the comparison method. Furthermore, the proposed method was applied for content uniformity testing of risedronate tablets. PMID:23675102

  3. Micelle-enhanced spectrofluorimetric method for determination of lacidipine in tablet form; application to content uniformity testing.

    PubMed

    Belal, F; Sharaf El-Din, M; Tolba, M M; Alaa, H

    2015-09-01

    A highly sensitive, simple and rapid spectrofluorimetric method was developed for the determination of lacidipine (LCP) in tablets. The proposed method is based on the investigation of the fluorescence spectral behavior of LCP in both sodium dodecyl sulphate (SDS) and the tween-80 micellar system. In aqueous solutions of acetate buffer (pH 4.5), the fluorescence intensities of LCP were greatly enhanced (ca. 2.4 and 4.3 folds) in the presence of either SDS or tween-80, respectively. The fluorescence intensity was measured at 444 nm after excitation at 277 nm using either SDS or tween-80 as a surfactant. The fluorescence-concentration plots were rectilinear over the ranges of 50.0-500.0 ng/ml and 5.0-200.0 ng/ml with lower detection limits of 5.11 and 2.06 ng/ml and lower quantification limits of 17 and 6.87 ng/ml using SDS and tween-80, respectively. The method was successfully applied to the analysis of LCP in commercial tablets and the results were in good agreement with those obtained with the comparison method. Furthermore, content uniformity testing of pharmaceutical tablets was also conducted.

  4. Highly sensitive spectrofluorimetric method for determination of doxazosin through derivatization with fluorescamine; Application to content uniformity testing

    NASA Astrophysics Data System (ADS)

    Omar, Mahmoud A.; Hammad, Mohamed A.; Salman, Baher I.; Derayea, Sayed M.

    2016-03-01

    A highly sensitive, simple and selective spectrofluorimetric method has been developed and validated for determination of doxazosin mesylate in pure form, pharmaceutical formulations and human plasma. The method is based on the reaction between doxazosin mesylate and fluorescamine in Teorell buffer solution (pH 3) to give highly fluorescent derivative that can be measured at 489 nm using excitation wavelength of 385 nm. Different experimental parameters affecting the reaction were carefully studied and optimized. The calibration plot was constructed over the concentration range of 16-400 ng mL- 1 with quantitation limit of 14.3 ng mL- 1. The developed procedure was validated according to ICH guidelines and the results were satisfactory. The proposed method has been successfully applied to the analysis of the cited drug in its pharmaceutical preparations as well as for content uniformity testing. The results showed excellent agreement with the reported method with respect to precision and accuracy. In addition, the drug concentration was determined in the spiked human plasma by the suggested method with % recovery in the range of 96.2-98.3% (SD; 0.76-0.93, n = 5).

  5. Selective spectrofluorimetric method for determination of Lisinopril in pharmaceutical preparations and in presence of hydrochlorothiazide: Application to content uniformity testing.

    PubMed

    Derayea, Sayed M; Badr El-Din, Khalid M; Mohammed, Fatma F

    2017-07-06

    A novel sensitive and cost-effective spectrofluorimetric method has been developed and validated for determination of lisinopril (an angiotensin converting enzyme inhibitor) in its pure form and pharmaceutical preparations. The method is based on the reaction of the drug with ninhydrin and phenylacetaldehyde in buffered medium (pH 7.0) to form a highly fluorescent product measured at 460 nm after excitation at 390 nm. Different experimental parameters were optimized and calibration curve was constructed. The fluorescence-concentration relationship was linear in the range of 0.15-4.0 μg mL(-1) . The calculated Limit of detection (LOD) and Limit of quantitation (LOQ) were 0.04 and 0.12 μg mL(-1) , respectively. The method was successfully applied for the analysis of pharmaceutical preparations containing the studied drug either alone or co-formulated with hydrochlorothiazide. The obtained results were in agreement with those of the reported method in respect to accuracy and precession. Moreover, the method was applied content uniformity testing according to United States Pharmacopeia (USP) guidelines. Copyright © 2017 John Wiley & Sons, Ltd.

  6. Spectrofluorimetric determination of certain adrenergic agonist drugs in their pure forms and pharmaceutical formulations: Content uniformity test application.

    PubMed

    Badr El-Din, Khalid M; Attia, Tamer Z

    2016-11-29

    A new, simple, sensitive and rapid spectrofluorimetric method has been developed for determination of certain adrenergic agonists such as isoxsuprine hydrochloride, ritodrine hydrochloride and etilefrine hydrochloride in their pure forms and pharmaceutical dosage forms. The method depends on micellar enhancement of the native fluorescence of investigated drugs by using 2% w/v sodium dodecyl sulfate (SDS) as an anionic surfactant. The enhanced fluorescence intensity of investigated drugs was measured at 305 nm after excitation at 278 nm. The interaction of studied drugs with SDS was studied, and the enhanced fluorescence intensity was exploited to develop an assay method for the determination of investigated drugs. The relative fluorescence intensity-concentration plots were rectilinear over the range 0.15-3.00 μg ml(-1) , with low quantification limits of 0.132, 0.123 and 0.118 μg mL(-1) for isoxsuprine, ritodrine and etilefrine, respectively. The proposed method was successfully applied for determination of studied drugs in their pharmaceutical formulations. Moreover, the high sensitivity of the proposed method allows performing the content uniformity testing of the studied drugs in their tablets by using the official United States Pharmacopeia (USP) guidelines. Statistical comparisons of the results with those of the reported methods revealed excellent agreement and indicated no significant difference in accuracy and precision.

  7. Accelerated Desensitization with Adaptive Attitudes and Test Gains with 5th Graders

    ERIC Educational Resources Information Center

    Miller, Melanie; Morton, Jerome; Driscoll, Richard; Davis, Kai A.

    2006-01-01

    The study evaluates an easily-administered test-anxiety reduction program. An entire fifth grade was screened, and 36 students identified as test-anxious were randomly assigned to an Intervention or a non-participant Control group. The intervention was an accelerated desensitization and adaptive attitudes (ADAA) treatment which involved…

  8. Flight test of ARINC 741 configuration low gain SATCOM system on Boeing 747-400 aircraft

    NASA Astrophysics Data System (ADS)

    Murphy, Timothy A.; Stapleton, Brian P.

    The Boeing company conducted a flight test of a SATCOM system similar to the ARINC 741 configuration on a production model 747-400. A flight plan was specifically designed to test the system over a wide variety of satellite elevations and aircraft attitudes as well as over land and sea. Interface bit errors, signal quality and aircraft position and navigational inputs were all recorded as a function of time. Special aircraft maneuvers were performed to demonstrate the potential for shadowing by aircraft structures. Both a compass rose test and the flight test indicated that shadowing from the tail is insignificant for the 747-400. However, satellite elevation angles below the aircraft horizon during banking maneuvers were shown to have a significant deleterious effect on SATCOM communications.

  9. Flight test of ARINC 741 configuration low gain SATCOM system on Boeing 747-400 aircraft

    NASA Technical Reports Server (NTRS)

    Murphy, Timothy A.; Stapleton, Brian P.

    1990-01-01

    The Boeing company conducted a flight test of a SATCOM system similar to the ARINC 741 configuration on a production model 747-400. A flight plan was specifically designed to test the system over a wide variety of satellite elevations and aircraft attitudes as well as over land and sea. Interface bit errors, signal quality and aircraft position and navigational inputs were all recorded as a function of time. Special aircraft maneuvers were performed to demonstrate the potential for shadowing by aircraft structures. Both a compass rose test and the flight test indicated that shadowing from the tail is insignificant for the 747-400. However, satellite elevation angles below the aircraft horizon during banking maneuvers were shown to have a significant deleterious effect on SATCOM communications.

  10. Measuring fit of sequence data to phylogenetic model: gain of power using marginal tests.

    PubMed

    Waddell, Peter J; Ota, Rissa; Penny, David

    2009-10-01

    Testing fit of data to model is fundamentally important to any science, but publications in the field of phylogenetics rarely do this. Such analyses discard fundamental aspects of science as prescribed by Karl Popper. Indeed, not without cause, Popper (Unended quest: an intellectual autobiography. Fontana, London, 1976) once argued that evolutionary biology was unscientific as its hypotheses were untestable. Here we trace developments in assessing fit from Penny et al. (Nature 297:197-200, 1982) to the present. We compare the general log-likelihood ratio (the G or G (2) statistic) statistic between the evolutionary tree model and the multinomial model with that of marginalized tests applied to an alignment (using placental mammal coding sequence data). It is seen that the most general test does not reject the fit of data to model (P approximately 0.5), but the marginalized tests do. Tests on pairwise frequency (F) matrices, strongly (P < 0.001) reject the most general phylogenetic (GTR) models commonly in use. It is also clear (P < 0.01) that the sequences are not stationary in their nucleotide composition. Deviations from stationarity and homogeneity seem to be unevenly distributed amongst taxa; not necessarily those expected from examining other regions of the genome. By marginalizing the 4( t ) patterns of the i.i.d. model to observed and expected parsimony counts, that is, from constant sites, to singletons, to parsimony informative characters of a minimum possible length, then the likelihood ratio test regains power, and it too rejects the evolutionary model with P < 0.001. Given such behavior over relatively recent evolutionary time, readers in general should maintain a healthy skepticism of results, as the scale of the systematic errors in published trees may really be far larger than the analytical methods (e.g., bootstrap) report.

  11. Item Selection in Multidimensional Computerized Adaptive Testing--Gaining Information from Different Angles

    ERIC Educational Resources Information Center

    Wang, Chun; Chang, Hua-Hua

    2011-01-01

    Over the past thirty years, obtaining diagnostic information from examinees' item responses has become an increasingly important feature of educational and psychological testing. The objective can be achieved by sequentially selecting multidimensional items to fit the class of latent traits being assessed, and therefore Multidimensional…

  12. Development of a test methodology for determining the efficacy of One Atmosphere Uniform Glow Discharge Plasma against airborne contaminants

    NASA Astrophysics Data System (ADS)

    Domitrovic, Ronald Edward

    A method of analysis is developed for an atmospheric plasma reactor in a ducted air stream with the intent of enabling parametric analysis for the multi-variable problem. Industrial uses for atmospheric plasma are numerous and in this case, a particular type of plasma known as "One Atmosphere Uniform Glow Discharge Plasma" (OAUGDP(TM)) was studied for its chemistry generation abilities and its microorganism efficacy properties. The system of an OAUGDP reactor positioned in an air duct of fully-developed turbulent flow is constructed of nineteen pertinent variables and dimensional analysis is applied according to the Buckingham Pi method, yielding fourteen dimensionless variable groups. Important Pi groups are identified, namely those relating electrical power input to chemical generation and microorganism efficacy and experimental data is gathered and presented. Ozone is measured as a representative chemical and generation rates are presented in terms of airflow Reynolds number, geometry of the reactor electrodes and power input to the reactor. A universal generation curve is developed for a parallel electrode reactor in which ozone generation rates can be determined from the known Reynolds number, electrode diameter to electrode gap ratio and plasma power to air flow power ratio. It is shown that ozone generation follows a bell shaped curve with increasing rates of production at a low ratio of plasma power to flow power, reaching a maximum and then decreasing to nearly zero at sufficiently high values of plasma power to flow power ratio. A principal area of development for OAUGDP and other atmospheric plasmas is for their use in destroying microorganisms, both on surfaces and in air streams. The ducted OAUGDP system was experimentally tested for efficacy against Bacillus atrophaeus endospores and results are presented in terms of the Reynolds number, the dimensionless plasma exposure time and the plasma power to airflow power ratio. Higher Reynolds numbers require

  13. Changes in self-reported HIV testing during South Africa's 2010/2011 national testing campaign: gains and shortfalls

    PubMed Central

    Maughan-Brown, Brendan; Lloyd, Neil; Bor, Jacob; Venkataramani, Atheendar S

    2016-01-01

    Objectives HIV counselling and testing is critical to HIV prevention and treatment efforts. Mass campaigns may be an effective strategy to increase HIV testing in countries with generalized HIV epidemics. We assessed the self-reported uptake of HIV testing among individuals who had never previously tested for HIV, particularly those in high-risk populations, during the period of a national, multisector testing campaign in South Africa (April 2010 and June 2011). Design This study was a prospective cohort study. Methods We analyzed data from two waves (2010/2011, n=16,893; 2012, n=18,707) of the National Income Dynamics Study, a nationally representative cohort that enabled prospective identification of first-time testers. We quantified the number of adults (15 years and older) testing for the first time nationally. To assess whether the campaign reached previously underserved populations, we examined changes in HIV testing coverage by age, gender, race and province sub-groups. We also estimated multivariable logistic regression models to identify socio-economic and demographic predictors of first-time testing. Results Overall, the proportion of adults ever tested for HIV increased from 43.7% (95% confidence interval (CI): 41.48, 45.96) to 65.2% (95% CI: 63.28, 67.10) over the study period, with approximately 7.6 million (95% CI: 6,387,910; 8,782,986) first-time testers. Among black South Africans, the country's highest HIV prevalence sub-group, HIV testing coverage improved among poorer and healthier individuals, thus reducing gradients in testing by wealth and health. In contrast, HIV testing coverage remained lower for men, younger individuals and the less educated, indicating persistent if not widening disparities by gender, age and education. Large geographic disparities in coverage also remained as of 2012. Conclusions Mass provision of HIV testing services can be effective in increasing population coverage of HIV testing. The geographic and socio

  14. Analytically Quantifying Gains in the Test and Evaluation Process through Capabilities-Based Analysis

    DTIC Science & Technology

    2011-09-01

    Maritime Surveillance C3I Command, Control and Communications CBA Capability Based Assessment CBT&E Capabilities-Based Test and Evaluation...multiple subsystems (e.g., command and control , mission planning, integrated air defense) usually capable of stand-alone operations, that combine to...environment, QRF teams will have varying levels of proficiency or different means of transit around the AOI. These factors allow the user to control QRF

  15. In-situ Testing of the EHT High Gain and Frequency Ultra-Stable Integrators

    NASA Astrophysics Data System (ADS)

    Miller, Kenneth; Ziemba, Timothy; Prager, James; Slobodov, Ilia; Lotz, Dan

    2014-10-01

    Eagle Harbor Technologies (EHT) has developed a long-pulse integrator that exceeds the ITER specification for integration error and pulse duration. During the Phase I program, EHT improved the RPPL short-pulse integrators, added a fast digital reset, and demonstrated that the new integrators exceed the ITER integration error and pulse duration requirements. In Phase II, EHT developed Field Programmable Gate Array (FPGA) software that allows for integrator control and real-time signal digitization and processing. In the second year of Phase II, the EHT integrator will be tested at a validation platform experiment (HIT-SI) and tokamak (DIII-D). In the Phase IIB program, EHT will continue development of the EHT integrator to reduce overall cost per channel. EHT will test lower cost components, move to surface mount components, and add an onboard Field Programmable Gate Array and data acquisition to produce a stand-alone system with lower cost per channel and increased the channel density. EHT will test the Phase IIB integrator at a validation platform experiment (HIT-SI) and tokamak (DIII-D). Work supported by the DOE under Contract Number (DE-SC0006281).

  16. IR gain monitor

    NASA Astrophysics Data System (ADS)

    Hilbert, Bryan

    2013-10-01

    The gain of the IR channel of WFC3 will be measured using a series of internal flat fields. Using knowledge gained from ground testing and previous cycles, we propose to collect flat field ramps which will be used to create photon transfer curves and give a measure of the gain. This continues the strategy of last cycle's gain monitor, in proposal 13080.

  17. 10 CFR Appendix J to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... of Automatic and Semi-Automatic Clothes Washers J Appendix J to Subpart B of Part 430 Energy.... 430, Subpt. B, App. J Appendix J to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes Washers The provisions of this appendix J shall apply...

  18. 10 CFR Appendix G to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Unvented Home Heating Equipment

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... per hour. The energy flow instrumentation shall measure the maximum fuel input with an error no.... Except as provided in section 2.3.1 of this appendix, measure the energy input rate to the pilot light... 10 Energy 3 2013-01-01 2013-01-01 false Uniform Test Method for Measuring the Energy Consumption...

  19. 10 CFR Appendix G to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Unvented Home Heating Equipment

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... energy flow instrumentation shall measure the maximum fuel input with an error no greater than one... energy input rate to the pilot light (Qp), with an error no greater than 3 percent, for unvented heaters... 10 Energy 3 2014-01-01 2014-01-01 false Uniform Test Method for Measuring the Energy Consumption...

  20. 10 CFR 431.304 - Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in freezers. 431.304 Section 431.304 Energy DEPARTMENT OF ENERGY... measuring, pursuant to EPCA, the energy consumption of refrigerated bottled or canned beverage vending...

  1. 10 CFR Appendix W to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Medium Base Compact Fluorescent Lamps

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Uniform Test Method for Measuring the Energy Consumption of Medium Base Compact Fluorescent Lamps W Appendix W to Subpart B of Part 430 Energy DEPARTMENT OF... final energy consumption value, as applicable, to the nearest decimal place or whole number as follows...

  2. 10 CFR Appendix V to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan Light Kits

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... of Ceiling Fan Light Kits V Appendix V to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Appendix V to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan... of ceiling fan light kits. 2. Definitions: a. Input power means the actual total power used by...

  3. 10 CFR Appendix V to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan Light Kits

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... of Ceiling Fan Light Kits V Appendix V to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Appendix V to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan... of ceiling fan light kits. 2. Definitions: a. Input power means the actual total power used by...

  4. Stability analysis of Hawaiian Island flanks using insight gained from strength testing of the HSDP core

    NASA Astrophysics Data System (ADS)

    Thompson, Nick; Watters, Robert J.; Schiffman, Peter

    2008-04-01

    Hawaiian Island flank failures are recognized as the largest landslide events on Earth, reaching volumes of several thousand cubic kilometers and lengths of over 200 km and occurring on an average of once every 100 000 years. The 3.1 km deep Hawaii Scientific Drilling Project (HSDP) enabled an investigation of the rock mass strength variations on the island of Hawaii [Schiffman, P., Watters, R.J., Thompson, N., Walton, A.W., 2006. Hyaloclastites and the slope stability of Hawaiian volcanoes: insights from the Hawaiian Scientific Drilling Project's 3-km drill core. Journal of Volcanology and Geothermal Research, 151 (1-3): 217-228]. This study builds on that of Schiffman et al. [Schiffman, P., Watters, R.J., Thompson, N., Walton, A.W., 2006. Hyaloclastites and the slope stability of Hawaiian volcanoes: Insights from the Hawaiian Scientific Drilling Project's 3-km drill core. Journal of Volcanology and Geothermal Research, 151 (1-3): 217-228] by considering more in-depth rock mass classification and strength testing methods of the HSDP core. Geotechnical core logging techniques combined with laboratory strength testing methods show that rock strength differences exist within the edifice. Comparing the rock strength parameters obtained from the various volcano lithologies identified weak zones, suggesting the possible location of future slip surfaces for large flank failures. Relatively weak rock layers were recognized within poorly consolidated hyaloclastite zones, with increases in strength based on degree of alteration. Subaerial and submarine basalt flows are found to be significantly stronger. With the aid of digital elevation models, cross-sections have been developed of key flank areas on the island of Hawaii. Limit equilibrium slope stability analyses are performed on each cross-section using various failure criteria for the rock mass strength calculations. Based on the stability analyses the majority of the slopes analyzed are considered stable. In cases

  5. Insights Gained from Ultrasonic Testing of Piping Welds Subjected to the Mechanical Stress Improvement Process

    SciTech Connect

    Anderson, Michael T.; Cinson, Anthony D.; Crawford, Susan L.; Diaz, Aaron A.; Moran, Traci L.

    2010-12-01

    Pacific Northwest National Laboratory (PNNL) is assisting the United States Nuclear Regulatory Commission (NRC) in developing a position on the management of primary water stress corrosion cracking (PWSCC) in leak-before-break piping systems. Part of this involves determining whether inspections alone, or inspections plus mitigation, are needed. This work addresses the reliability of ultrasonic testing (UT) of cracks that have been mitigated by the mechanical stress improvement process (MSIP). The MSIP has been approved by the NRC (NUREG-0313) since 1986 and modifies residual stresses remaining after welding with compressive, or neutral, stresses near the inner diameter surface of the pipe. This compressive stress is thought to arrest existing cracks and inhibit new crack formation. To evaluate the effectiveness of the MSIP and the reliability of ultrasonic inspections, flaws were evaluated both before and after MSIP application. An initial investigation was based on data acquired from cracked areas in 325-mm-diameter piping at the Ignalina Nuclear Power Plant (INPP) in Lithuania. In a follow-on exercise, PNNL acquired and evaluated similar UT data from a dissimilar metal weld (DMW) specimen containing implanted thermal fatigue cracks. The DMW specimen is a carbon steel nozzle-to-safe end-to-stainless steel pipe section that simulates a pressurizer surge nozzle. The flaws were implanted in the nozzle-to-safe end Alloy 82/182 butter region. Results are presented on the effects of MSIP on specimen surfaces, and on UT flaw responses.

  6. Cold test, spontaneous emission and gain in a rectangular Cerenkov amplifier

    SciTech Connect

    Scharer, J.E.; Joe, J.; Booske, J.H.; Basten, M.; Kirolous, H.

    1994-12-31

    The authors present experimental results for the rectangular Cerenkov grating amplifier. This research is being carried out to develop a Ka-band (35 GHz), low voltage (10 kV), moderate power (10 kW) source. They have constructed a Ku-band grating structure to study a scaled version of this source. The tapered grating consists of two tapered Ku-band smooth wave guide sections and two 3.5-inch sections of five-step-tapered gratings. Both tapered and untapered grating structures have been cold tested utilizing the network analyzer measurements. They find that their taper design reduced the reflection coefficient from {minus}5 dB to less than {minus}20 dB over a 12--15 GHz bandwidth. Spontaneous emission results resulting from passing the circular electron beam from a Litton thermionic gun over the grating structure will be presented. They have theoretically investigated the sheet beam interaction with hybrid modes in a deep groove rectangular grating waveguide. A complex dispersion relation, which includes a finite axial energy spread of the beam, describing the interaction has been solved. The authors find that the instability is always convective in the forward wave mode regime.

  7. Gain Evaluation of Micro-Channel-Plate Photomultipliers in the Upgraded High-B Test Facility at Jefferson Lab

    NASA Astrophysics Data System (ADS)

    Barber, Corinne; DIRC at EIC Collaboration

    2015-10-01

    The High-B test facility at Thomas Jefferson National Accelerator Facility allows researchers to evaluate the gain of compact photon sensors, such as Micro-Channel-Plate Photomultipliers (MCP-PMTs), in magnetic fields up to 5 T. These ongoing studies support the development of a Detector of Internally Reflected Cherenkov light (DIRC) to be used in an Electron Ion Collider (EIC). Here, we present our summer 2015 activities to upgrade and improve the facility, and we show results for MCP-PMT gain changes in high B-fields. To monitor the light stability delivered to the MCP-PMTs being tested, we implemented a Silicon Photomultiplier (SiPM) in the setup and calibrated the ADC reading this sensor. A 405-nm Light-Emitting Diode (LED) housed in an optical tube compatible with neutral density filters was also installed. The filters provide an alternative way of reducing the light output of the LED to operate the MCP-PMTs in a single-photon mode. We calibrated a set of filters by means of a photodiode and measured the photon flux at multiple positions relative to the LED. This information helped us to design 3D-printed holders unique to each MCP-PMT so that the photocathode receives the greatest amount of light. The improvements to the setup allow for more precise PMT gain evaluation. This team includes 7 collaborators/co-authors besides myself: Yordanka Ilieva, Kijun Park, Greg Kalicy, Carl Zorn, Pawel Nadel-Turonski, Tongtong Cao, and Lee.

  8. Gimbals Drive and Control Electronics Design, Development and Testing of the LRO High Gain Antenna and Solar Array Systems

    NASA Technical Reports Server (NTRS)

    Chernyakov, Boris; Thakore, Kamal

    2010-01-01

    Launched June 18, 2009 on an Atlas V rocket, NASA's Lunar Reconnaissance Orbiter (LRO) is the first step in NASA's Vision for Space Exploration program and for a human return to the Moon. The spacecraft (SC) carries a wide variety of scientific instruments and provides an extraordinary opportunity to study the lunar landscape at resolutions and over time scales never achieved before. The spacecraft systems are designed to enable achievement of LRO's mission requirements. To that end, LRO's mechanical system employed two two-axis gimbal assemblies used to drive the deployment and articulation of the Solar Array System (SAS) and the High Gain Antenna System (HGAS). This paper describes the design, development, integration, and testing of Gimbal Control Electronics (GCE) and Actuators for both the HGAS and SAS systems, as well as flight testing during the on-orbit commissioning phase and lessons learned.

  9. Uniformities in OSA-UCS and in NCS tested by color difference prediction based on principal hue components

    NASA Astrophysics Data System (ADS)

    Indow, Tarow

    2002-06-01

    The OSA uniform color system is a 3-D collection of color samples according to the regular rhombohedral structure in which each color is surrounded by its 12 nearest neighbors, all perceptually equally different (local uniformity). The Swedish NCS system is a 3-D collection of color samples that vary gradually in each of the three perceptual attributes. It is not clear that this arrangement implies all neighboring pairs along the respective coordinates being perceptually equally different (local uniformity). Of pairs (j,k) of interest, predicted color differences djk were calculated that have the following property. Suppose an observer selects a pair of Munsell grays (Va, Vb) that matches in size with the color difference between (j,k), then djk=|Va-Vb| is predicted by djk, on the average, with error of 0.34 in Munsell V-unit. Variation of djk in this unit was in the order of 0.22V for nearest neighboring pairs (j,k) in various cleavage planes of OSA-UCS and in the order of 0.11V for neighboring pairs (j,k) along s-coordinate and c-coordinate in sheets with fixed hue of NCS. Both were well within the prediction error range, but some systematic trends in values of djk were found.

  10. 10 CFR Appendix U to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... Test Procedure,” and Chapter 6, “Definitions and Acronyms,” of the EPA's “ENERGY STAR Testing Facility Guidance Manual: Building a Testing Facility and Performing the Solid State Test Method for ENERGY STAR... specified in Chapter 4, “Equipment Setup and Test Procedure,” of the EPA's “ENERGY STAR Testing Facility...

  11. 10 CFR Appendix U to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... Test Procedure,” and Chapter 6, “Definitions and Acronyms,” of the EPA's “ENERGY STAR Testing Facility Guidance Manual: Building a Testing Facility and Performing the Solid State Test Method for ENERGY STAR... specified in Chapter 4, “Equipment Setup and Test Procedure,” of the EPA's “ENERGY STAR Testing Facility...

  12. Color Uniformity in Navy Uniforms.

    DTIC Science & Technology

    1980-05-01

    realized in contracting with a specific trouser, skirt, shirt or blouse manufacturer. Uniform items are issued on the basis of size and not on a top...Blue 3346 Spec. No.: MIL-C-29147 End Item: Men’s Winter Shirt Method of Issue: Stock Item - DPSC Procured Optional - NAVRESSO Method of Dyeing: Standard...Polyester Color: Blue 3346 Spec. No.: MIL-C-87051 End Item: Women’s Winter Shirt (new) Method of Issue: Stock Item - DPSC Procured Method of Dyeing: Piece

  13. High gain GaAs Photoconductive Semiconductor Switches (PCSS): Device lifetime, high current testing, optical pulse generators

    SciTech Connect

    Zutavern, F.J.; Loubriel, G.M.; Helgeson, W.D.; O`Malley, M.W.; Gallegos, R.R.; Hjalmarson, H.P.; Baca, A.G.; Plut, T.A.

    1995-12-31

    This paper presents results from three areas of GaAs PCSS research and development: device lifetime, high current switching, and PCSS-driven laser diode arrays (LDA). The authors have performed device lifetime tests on both lateral and vertical switches as a function of current amplitude, pulse width, and charging time. At present, their longest-lived switch reached 4 {times} 10{sup 6} pulses. Scanning electron microscope (SEM) images show damage near the contacts even after only 5 pulses. They are presently searching for the threshold at which no damage is evident after a single shot. In high current tests, they have reached 5.2 kA at 4.2 kV. This was achieved using twenty fiber-optic coupled lasers to distribute current filaments over a 5 mm wide PCSS. Current waveforms and images of the current filaments as a function of current amplitude will be presented. The lasers used to trigger the high current PCSS were driven with a miniature PCSS. Low inductance, high speed GaAs PCSS are very effective as short pulse laser diode array drivers. Some types of arrays gain switch, producing a compressed optical pulse which is only 75 ps wide. Results from tests with a variety of laser diode arrays will be presented.

  14. Quality assurance test of delivered dose uniformity of multiple-dose inhaler and dry powder inhaler drug products.

    PubMed

    Tsong, Yi; Dong, Xiaoyu; Shen, Meiyu; Lostritto, Richard T

    2015-01-01

    The delivered dose uniformity is one of the most critical requirements for dry powder inhaler (DPI) and metered dose inhaler products. In 1999, the Food and Drug Administration (FDA) issued a Draft Guidance entitled Nasal Spray and Inhalation Solution, Suspension, and Spray Drug Products-Chemistry, Manufacturing and Controls Documentation and recommended a two-tier acceptance sampling plan that is a modification of the United States Pharmacopeia (USP) sampling plan of dose content uniformity (USP34<601>). This sampling acceptance plan is also applied to metered dose inhaler (MDI) and DPI drug products in general. The FDA Draft Guidance method is shown to have a near-zero probability of acceptance at the second tier. In 2000, under the request of The International Pharmaceutical Aerosol Consortium, the FDA developed a two-tier sampling acceptance plan based on two one-sided tolerance intervals (TOSTIs) for a small sample. The procedure was presented in the 2005 Advisory Committee Meeting of Pharmaceutical Science and later published in the Journal of Biopharmaceutical Statistics (Tsong et al., 2008). This proposed procedure controls the probability of the product delivering below a pre-specified effective dose and the probability of the product delivering over a pre-specified safety dose. In this article, we further propose an extension of the TOSTI procedure to single-tier procedure with any number of canisters.

  15. IR Gain Monitor

    NASA Astrophysics Data System (ADS)

    Hilbert, Bryan

    2012-10-01

    The gain of the IR channel of WFC3 will be measured using a series of internal flat fields. Using knowledge gained from ground testing and previous cycles, we propose to collect flat field ramps which will be used to create photon transfer curves and give a measure of the gain.

  16. Custom uniform source system

    NASA Technical Reports Server (NTRS)

    Balcom, John L.

    1994-01-01

    The purpose and scope of this final report is to provide information on the Custom Uniform Source System (CSTM-USS-4000). The report includes documentation and summaries of the results for the work performed under the contract. The Annex contain laboratory test findings, photographs, and drawings of the sphere system.

  17. Study of high gain spherical shell ICF targets containing uniform layers of liquid deuterium tritium fuel. A numericial model for analyzing thermal layering of liquid mixtures of hydrogen isotopes inside a spherical inertial confinement fusion target: Final report

    SciTech Connect

    Simpson, E.M.; Kim, Kyekyoon

    1994-05-01

    A numerical model has been developed to describe the thermally induced behavior of a liquid layer of hydrogen isotopes inside a spherical Inertial Confinement Fusion (ICF) target and to calculate the far-field temperature gradient which will sustain a uniform liquid layer. This method is much faster than the trial-and-error method previously employed. The governing equations are the equations of continuity, momentum, energy, mass diffusion-convection, and conservation of the individual isotopic species. Ordinary and thermal diffusion equations for the diffusion of fluxes of the species are included. These coupled equations are solved by a finite-difference method using upwind schemes, variable mesh, and rigorous boundary conditions. The solution methodology unique to the present problem is discussed in detail. in particular, the significance of the surface tension gradient driven flows (also called Marangoni flows) in forming uniform liquid layers inside ICF targets is demonstrated. Using the theoretical model, the values of the externally applied thermal gradients that give rise to uniform liquid layers of hydrogen inside a cryogenic spherical-shell ICF target are calculated, and the results compared with the existing experimental data.

  18. 10 CFR Appendix Y to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Battery Chargers

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... condition in which the battery is receiving the main charge, equalizing cells, and performing other one-time... or battery pack is an assembly of one or more rechargeable cells intended to provide electrical... turned on. 3. Test Apparatus and General Instructions: The test apparatus, standard testing...

  19. Gaining control over responses to implicit attitude tests: Implementation intentions engender fast responses on attitude-incongruent trials.

    PubMed

    Webb, Thomas L; Sheeran, Paschal; Pepper, John

    2012-03-01

    The present research investigated whether forming implementation intentions could promote fast responses to attitude-incongruent associations (e.g., woman-manager) and thereby modify scores on popular implicit measures of attitude. Expt 1 used the Implicit Association Test (IAT) to measure associations between gender and science versus liberal arts. Planning to associate women with science engendered fast responses to this category-attribute pairing and rendered summary scores more neutral compared to standard IAT instructions. Expt 2 demonstrated that forming egalitarian goal intentions is not sufficient to produce these effects. Expt 3 extended these findings to a different measure of implicit attitude (the Go/No-Go Association Task) and a different stereotypical association (Muslims-terrorism). In Expt 4, managers who planned to associate women with superordinate positions showed more neutral IAT scores relative to non-planners and effects were maintained 3 weeks later. In sum, implementation intentions enable people to gain control over implicit attitude responses. © 2010 The British Psychological Society.

  20. Instructional practices among science departments with high, moderate, and low gains on the Connecticut Academic Performance Test

    NASA Astrophysics Data System (ADS)

    Kachergis, Theodora R.

    The purpose of this study was to ascertain whether the instructional practices of performance-based, inquiry-based, and authentic-based learning strategies, and rubric use are related to improvement on the science portion of the Connecticut Academic Performance Test [CAPT], as indicated by CAPT gains from 1995--2001. Data were collected for this study by a survey/interview of 63 Connecticut high schools and their 118 certified biology teachers, who had participated in the science CAPT administration within that same school district during 1995--2001. Results from the analysis of the data indicate a significant relationship between strategy and rubric use and CAPT science score outputs. Those schools having the highest levels of strategy and rubric use also demonstrated high CAPT gains and increasing CAPT scores, over time. It was also determined that a strong relationship exists between the percentage of the ERG's goal for CAPT index and those ERGs, using strategies and/or rubrics proficiently. The major findings of the study reveal that teachers demonstrate a confusion of strategy/rubric meaning, as indicated by the low proficiency levels of their submitted strategy and rubric samples, despite high indicators of use for the three learning strategies and rubrics. In addition, rubrics are rated highly by the sample, but are not employed at the high levels of reported favorability. Further analysis determines that objective forms of assessment are used more frequently than strategy and rubric use, and may be implicated for the decreased use of rubrics. Although survey data indicate that 90% of the sample reported "Satisfactory" to "Excellent" levels of annual score updates within their respective districts, teachers requested a need for increased pre- and in-service professional development in the use of all three strategies and rubrics: particularly non-tenured teachers expressed a need for basic CAPT information and samples of strategy and rubric use, while

  1. 10 CFR 431.264 - Uniform test method for the measurement of flow rate for commercial prerinse spray valves.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Commercial Prerinse Spray... resolution of the test instrumentation. Round off calculations to the same number of significant digits...

  2. 10 CFR Appendix X to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dehumidifiers

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...,” section 2, “Qualifying Products,” and section 4, “Test Criteria,” of the EPA's “ENERGY STAR Program... section 4, “Test Criteria,” of EPA's “ENERGY STAR Program Requirements for Dehumidifiers,” effective...

  3. 10 CFR Appendix X to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dehumidifiers

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... section 4, “Test Criteria,” of the EPA's “ENERGY STAR Program Requirements for Dehumidifiers,” effective..., “Test Criteria,” of EPA's “ENERGY STAR Program Requirements for Dehumidifiers,” effective January 1...

  4. 10 CFR Appendix B to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Freezers

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... were set to maintain the standardized temperature (see section 3.2). 1.7“Cycle type” means the set of... § 430.3) section 5.5.1; (d) Temperature control settings for testing shall be as described in section 3... energy testing; (f) All the product's chutes and throats required for the delivery of ice shall be free...

  5. 10 CFR 431.264 - Uniform test method for the measurement of flow rate for commercial prerinse spray valves.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ..., the water consumption flow rate of commercial prerinse spray valves. (b) Testing and Calculations. The test procedure to determine the water consumption flow rate for prerinse spray valves, expressed in... the previous step. Round the final water consumption value to one decimal place as follows: (1) A...

  6. 10 CFR 431.64 - Uniform test method for the measurement of energy consumption of commercial refrigerators...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... refrigerator-freezer by conducting the test procedure set forth in the Air-Conditioning and Refrigeration... Storage Cabinets,” section 3, “Definitions,” section 4, “Test Requirements,” and section 7, “Symbols and... Requirements for Self-contained Commercial Refrigerated Display Merchandisers and Storage...

  7. 10 CFR Appendix U to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fans

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... performing the airflow test, measure ceiling fan power using a RMS sensor capable of measuring power with an accuracy of ±1 %. Prior to using the sensor and sensor software it has selected, the test laboratory shall verify performance of the sensor and sensor software. Measure power input at a point that includes...

  8. 10 CFR Appendix Y to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Battery Chargers

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... standard for battery chargers. 1. Scope This appendix covers the test requirements used to measure battery... generally be determined by trial and error. Since the conditioning step does not require constant-current discharges, the trials themselves may also be counted as part of battery conditioning. 5. Test Measurement...

  9. 10 CFR Appendix B to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Freezers

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... factor. 1.2“Anti-sweat heater” means a device incorporated into the design of a freezer to prevent the... test period; T = length of time of the test period in minutes; 1440 = conversion factor to adjust to a 24-hour period in minutes per day; and K = dimensionless correction factor of 0.7 for chest...

  10. 10 CFR 431.264 - Uniform test method for the measurement of flow rate for commercial prerinse spray valves.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ..., the water consumption flow rate of commercial prerinse spray valves. (b) Testing and Calculations. The test procedure to determine the water consumption flow rate for prerinse spray valves, expressed in... the previous step. Round the final water consumption value to one decimal place as follows: (1) A...

  11. 10 CFR 431.106 - Uniform test method for the measurement of energy efficiency of commercial water heaters and hot...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... heaters). 431.106 Section 431.106 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY... of energy efficiency of commercial water heaters and hot water supply boilers (other than commercial...) Testing and Calculations. Determine the energy efficiency of each covered product by conducting the test...

  12. 10 CFR 431.106 - Uniform test method for the measurement of energy efficiency of commercial water heaters and hot...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... heaters). 431.106 Section 431.106 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY... of energy efficiency of commercial water heaters and hot water supply boilers (other than commercial...) Testing and Calculations. Determine the energy efficiency of each covered product by conducting the test...

  13. CHANGES IN OPERATING PROCEDURES FOR AEROSOL CONCENTRATION UNIFORMITY FOR PM2.5 AND PM10 SAMPLER TESTING

    EPA Science Inventory

    This technical note documents changes in the standard operating procedures used at the Environmental Protection Agency's (U.S. EPA) aerosol testing wind tunnel facility for testing of particulate matter monitoring methods of PM2.5 and PM10. These changes are relative to the op...

  14. 10 CFR Appendix B to Subpart B of... - Uniform Test Method for Measuring Nominal Full Load Efficiency of Electric Motors

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Winding (I2R), Core and Windage-Friction Losses, or (2) IEEE Standard 112-1996 Test Method B, Input-Output With Loss Segregation, (Incorporated by reference, see § 431.15) with IEEE correction notice of January... revision to IEEE Standard 112-1996 Test Method B with correction notice of January 20, 1998, to...

  15. 10 CFR Appendix C to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dishwashers

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... water heating to above 120 °F in at least one wash phase of the normal cycle. 2.Testing conditions: 2... dishwasher does not heat water in the normal cycle. 2.6.2Non-soil-sensing dishwashers to be tested at a... cycle. 3.4Water pressure gauge. The water pressure gauge must have a resolution of one pound per...

  16. 10 CFR Appendix C to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dishwashers

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... water heating to above 120 °F in at least one wash phase of the normal cycle. 2.Testing conditions: 2... dishwasher does not heat water in the normal cycle. 2.6.2Non-soil-sensing dishwashers to be tested at a... cycle. 3.4Water pressure gauge. The water pressure gauge must have a resolution of one pound per...

  17. The relative persuasiveness of gain-framed versus loss-Framed HIV testing message: evidence from a field experiment in northwest Ethiopia.

    PubMed

    Bekalu, Mesfin Awoke; Eggermont, Steven

    2014-01-01

    This study assessed the relative advantages of gain- versus loss-framed messages for promoting HIV testing among a sample of urban and rural residents in northwest Ethiopia. The authors randomly assigned 394 participants to read gain-framed (n = 196) or loss-framed (n = 198) HIV testing message prepared in a form of brochure. Experience with HIV testing, concern about and information needs on HIV/AIDS, and urbanity versus rurality significantly moderated the effects of framing on intention to test for HIV. A gain-frame advantage was found among urbanites, participants with high experience with HIV testing, and those with high concern about and information needs on HIV/AIDS, suggesting a more likely construal of HIV testing as a prevention behavior among these individuals. In contrast, a loss-frame advantage was found among ruralites and participants with low concern about and information needs on HIV/AIDS, suggesting a more likely construal of HIV testing as a detection behavior among such individuals. Moreover, gain- and loss-framing led to similar outcomes among individuals with low levels of experience with HIV testing, with a slight advantage for the loss-framed message. All of the framing effects obtained were of small to medium size.

  18. Effects of a breeding scheme combined by genomic pre-selection and progeny testing on annual genetic gain in a dairy cattle population.

    PubMed

    Yamazaki, Takeshi; Togashi, Kenji; Iwama, Satoru; Matsumoto, Shigeo; Moribe, Kimihiro; Nakanishi, Takatoshi; Hagiya, Koichi; Hayasaka, Kiyoshi

    2014-06-01

    The effectiveness of the incorporation of genomic pre-selection into dairy cattle progeny testing (GS-PT) was compared with that of progeny testing (PT) where the fraction of dam to breed bull (DB) selected was 0.01. When the fraction of sires to breed bulls (SB) selected without being progeny tested to produce young bulls (YB) in the next generation was 0.2, the annual genetic gain from GS-PT was 13% to 43% greater when h(2)  = 0.3 and 16% to 53% greater when h(2)  = 0.1 compared with that from PT. Given h(2)  = 0.3, a selection accuracy of 0.8 for both YB and DB, and selected fractions of 0.117 for YB and 0.04 for DB, GS-PT produced 40% to 43% greater annual genetic gain than PT. Given h(2)  = 0.1, a selection accuracy of 0.6 for both YB and DB, and selected fractions of 0.117 for YB and 0.04 for DB, annual genetic gain from GS-PT was 48% to 53% greater than that from PT. When h(2)  = 0.3, progeny testing capacity had little effect on annual genetic gain from GS-PT. However, when h(2)  = 0.1, annual genetic gain from GS-PT increased with increasing progeny testing capacity.

  19. 10 CFR Appendix B1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Freezers

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... defined in HRF-1-1979 in cubic feet, times (2) an adjustment factor. 1.2“Anti-sweat heater” means a device... during the test period. T=length of time of the test period in minutes, 1440=conversion factor to adjust to a 24 hour period in minutes per day, and K=correction factor of 0.7 for chest freezers and...

  20. A 6-month randomized controlled trial to test the efficacy of a lifestyle intervention for weight gain management in schizophrenia

    PubMed Central

    2013-01-01

    Background Patients with schizophrenia have lower longevity than the general population as a consequence of a combination of risk factors connected to the disease, lifestyle and the use of medications, which are related to weight gain. Methods A multicentric, randomized, controlled-trial was conducted to test the efficacy of a 12-week group Lifestyle Wellness Program (LWP). The program consists of a one-hour weekly session to discuss topics like dietary choices, lifestyle, physical activity and self-esteem with patients and their relatives. Patients were randomized into two groups: standard care (SC) and standard care plus intervention (LWP). Primary outcome was defined as the weight and body mass index (BMI). Results 160 patients participated in the study (81 in the intervention group and 79 in the SC group). On an intent to treat analysis, after three months the patients in the intervention group presented a decrease of 0.48 kg (CI 95% -0.65 to 1.13) while the standard care group showed an increase of 0.48 kg (CI 95% 0.13 to 0.83; p=0.055). At six-month follow-up, there was a significant weight decrease of −1.15 kg, (CI 95% -2.11 to 0.19) in the intervention group compared to a weight increase in the standard care group (+0.5 kg, CI 95% -0.42–1.42, p=0.017). Conclusion In conclusion, this was a multicentric randomized clinical trial with a lifestyle intervention for individuals with schizophrenia, where the intervention group maintained weight and presented a tendency to decrease weight after 6 months. It is reasonable to suppose that lifestyle interventions may be important long-term strategies to avoid the tendency of these individuals to increase weight. Clinicaltrials.gov identifier NCT01368406 PMID:23418863

  1. The case-only test for gene-environment interaction is not uniformly powerful: an empirical example

    PubMed Central

    Wu, Chen; Chang, Jiang; Ma, Baoshan; Miao, Xiaoping; Zhou, Yifeng; Liu, Yu; Li, Yun; Wu, Tangchun; Hu, Zhibin; Shen, Hongbing; Jia, Weihua; Zeng, Yixin; Lin, Dongxin; Kraft, Peter

    2016-01-01

    The case-only test has been proposed as a more powerful approach to detect gene-environment (G×E) interactions. This approach assumes that the genetic and environmental factors are independent. While it is well known that Type I error rate will increase if this assumption is violated, it is less widely appreciated that gene-environment correlation can also lead to power loss. We illustrate this phenomenon by comparing the performance of the case-only test to other approaches to detect G×E interactions in a genome-wide association study of esophageal squamous carcinoma (ESCC) in Chinese populations. Some of these approaches do not use information on the correlation between exposure and genotype (standard logistic regression), while others seek to use this information in a robust fashion to boost power without increasing Type I error (two-step, empirical Bayes and cocktail methods). G×E interactions were identified involving drinking status and two regions containing genes in the alcohol metabolism pathway, 4q23 and 12q24. Although the case-only test yielded the most significant tests of G×E interaction in the 4q23 region, the case-only test failed to identify significant interactions in the 12q24 region which were readily identified using other approaches. The low power of the case-only test in the 12q24 region is likely due to the strong inverse association between the SNPs in this region and drinking status. This example underscores the need to consider multiple approaches to detect gene-environment interactions, as different tests are more or less sensitive to different alternative hypotheses and violations of the gene-environment independence assumption. PMID:23595356

  2. 10 CFR Appendix Y to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Battery Chargers

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... other terminology used in the test method, please refer to IEEE Standard 1515-2000. a. Accumulated... battery energy. h. Manual on-off switch is a switch activated by the user to control power reaching the... disconnect mains power from the device when a battery is removed from a cradle or charging base or,...

  3. 10 CFR Appendix P to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Pool Heaters

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... shall be in Btu. 4.2Average annual fossil fuel energy for pool heaters. The average annual fuel energy... reference; see § 430.3) and the fossil fuel energy consumption during the standby test, Qp, in Btu. Ambient... switch, the average electric power consumption during the off mode, PW,OFF = 0, and the fossil fuel...

  4. 10 CFR Appendix A to Subpart K of... - Uniform Test Method for Measuring the Energy Consumption of Distribution Transformers

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... Measured quantity Test systemaccuracy Power Losses ±3.0% Voltage ±0.5% Current ±0.5% Resistance ±0.5... establish the winding temperature at the time of the winding resistance measurement. (b) Measure the direct current resistance (Rdc) of transformer windings by one of the methods outlined in section 3.3....

  5. 10 CFR Appendix A to Subpart K of... - Uniform Test Method for Measuring the Energy Consumption of Distribution Transformers

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... Measured quantity Test systemaccuracy Power Losses ± 3.0% Voltage ± 0.5% Current ± 0.5% Resistance ± 0.5... establish the winding temperature at the time of the winding resistance measurement. (b) Measure the direct current resistance (Rdc) of transformer windings by one of the methods outlined in section 3.3....

  6. 10 CFR Appendix Z to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of External Power Supplies

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... separately powered fans, air conditioners, or heat sinks. The UUT shall be conditioned, rested, and tested on....022 d. Ambient temperature means the temperature of the ambient air immediately surrounding the unit... air speed immediately surrounding the UUT of ≤ 0.5 m/s. The ambient temperature shall be maintained...

  7. 10 CFR Appendix Z to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of External Power Supplies

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... separately powered fans, air conditioners, or heat sinks. The UUT shall be conditioned, rested, and tested on....022 d. Ambient temperature means the temperature of the ambient air immediately surrounding the unit... air speed immediately surrounding the UUT of ≤0.5 m/s. The ambient temperature shall be maintained...

  8. 10 CFR 431.224 - Uniform test method for the measurement of energy consumption for traffic signal modules and...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT... provides the test procedures for measuring, pursuant to EPCA, the maximum wattage and nominal wattage of... procedures for measuring the maximum wattage and nominal wattage of traffic signal modules and pedestrian...

  9. 10 CFR 431.324 - Uniform test method for the measurement of energy efficiency of metal halide ballasts.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... energy efficiency of metal halide ballasts. (b) Testing and Calculations. Energy Conservation Standards ... efficiency of metal halide ballasts. 431.324 Section 431.324 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT Metal Halide Lamp Ballasts...

  10. 10 CFR 431.324 - Uniform test method for the measurement of energy efficiency and standby mode energy consumption...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... ANSI C82.6 (incorporated by reference; see § 431.323). Ambient temperatures for the testing period... general requirements in section 4.4.1 of ANSI C82.6 and be seasoned for a minimum of 100 hour prior to use... of ANSI C82.6, and stabilization shall be reached when the lamp's electrical characteristics vary by...

  11. 10 CFR Appendix D to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Clothes Dryers

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... warp and 57 picks on the fill. The individual warp and fill yarns are a blend of 50 percent cotton and... equipped with a timer, at the maximum time setting and dry the test load until the moisture content of the... time termination control systems. =1.04 for automatic control systems which meet the requirements of...

  12. 10 CFR Appendix D to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Clothes Dryers

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... warp and 57 picks on the fill. The individual warp and fill yarns are a blend of 50 percent cotton and... equipped with a timer, at the maximum time setting and dry the test load until the moisture content of the... time termination control systems. =1.04 for automatic control systems which meet the requirements of...

  13. 10 CFR Appendix D to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Clothes Dryers

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... time. However, manufacturers may elect to use the amended appendix D, D1 or D2 early. 1. Definitions 1... per square yard after test cloth preconditioning and has 65 ends on the warp and 57 picks on the fill. The individual warp and fill yarns are a blend of 50 percent cotton and 50 percent polyester fibers...

  14. 10 CFR Appendix C1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dishwashers

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... Preconditioning cycle means a normal cycle run with no test load to ensure that the water lines and sump area of... phase of the normal cycle. 1.27 Water-softening dishwasher means a dishwasher which incorporates a water softening system that periodically consumes additional water and energy during the cycle to regenerate....

  15. 10 CFR Appendix C1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Dishwashers

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... water softening system that periodically consumes additional water and energy during the cycle to... cycle without a test load if the dishwasher does not heat water in the normal cycle. 2.6.2Non-soil... cycle. During the second preconditioning, measure the prewash fill water volume, Vpw, if any, and...

  16. Columbia University Flow Instability Experimental Program, Volume 1. Single tube uniformly heated tests: Part 1, Technical discussion

    SciTech Connect

    Dougherty, T.; Maciuca, C.; McAssey, E.V. Jr.; Reddy, D.G.; Yang, B.W.

    1990-01-01

    An experimental program has been conducted to investigate flow instability in circular tubes under vertical down-flow conditions. The test section L/D ratio range was 86 to 270. The maximum test section surface heat flux was one million Btu/hr-ft{sup 2}. Over 1700 data points were obtained. The effect of flowrate, inlet temperature, exit pressure, and heat flux on the initiation of flow instability was determined. In addition, the data was used to evaluate various methods of predicting the onset of flow instability. Using the measured wall temperatures, surface temperatures and heat transfer coefficients have been obtained. Correlations for the heat transfer coefficient along the tube under both single and two phase conditions were developed.

  17. 10 CFR Appendix B1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Freezers

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Standard as a revision of ANSI B38.1-1970. 1.2“Anti-sweat heater” means a device incorporated into the... characteristics. 1.5“Standard cycle” means the cycle type in which the anti-sweat heater switch, when provided, is... controls are to be operative and the anti-sweat heater switch is to be “on” during one test and...

  18. 10 CFR Appendix E to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Water Heaters

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ..., total number of draws during the first-hour rating test Q total fossil fuel and/or electric energy... equal to the nominal value of 77 °F (42.8 °C) Q r energy consumption of fossil fuel or heat pump water....6Electrical and/or Fossil Fuel Supply. 2.6.1Electrical. Maintain the electrical supply voltage to within ±1...

  19. 10 CFR Appendix D1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Clothes Dryers

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... standard test detergent Formula 3. Wash water temperature is to be controlled at 140 ° ±5 °F (60 ° ±2.7 °C). Rinse water temperature is to be controlled at 100 ° ±5 °F (37.7 ±2.7 °C). (3) Rinse the load again at the same water temperature. (4) Bone dry the load as prescribed in section 1.5 and weigh the load....

  20. 10 CFR Appendix N to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Furnaces and Boilers

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... Standards Institute (ANSI) on October 4, 1993, and entitled “Method of Testing for Annual Fuel Utilization... utilization efficiency. The annual fuel utilization efficiency (AFUE) is as defined in sections 11.2.12 (non.... EffyHS=Annual Fuel Utilization Efficiency as defined in 11.2.11, 11.3.11, 11.4.11 or 11.5.11 of ANSI...

  1. 10 CFR Appendix N to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Furnaces and Boilers

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Standards Institute (ANSI) on October 4, 1993, and entitled “Method of Testing for Annual Fuel Utilization... utilization efficiency. The annual fuel utilization efficiency (AFUE) is as defined in sections 11.2.12 (non.... EffyHS=Annual Fuel Utilization Efficiency as defined in 11.2.11, 11.3.11, 11.4.11 or 11.5.11 of ANSI...

  2. Tailoring Auditory Training to Patient Needs with Single and Multiple Talkers: Transfer-Appropriate Gains on a Four-Choice Discrimination Test

    PubMed Central

    Barcroft, Joe; Sommers, Mitchell S.; Tye-Murray, Nancy; Mauzé, Elizabeth; Schroy, Catherine; Spehar, Brent

    2012-01-01

    OBJECTIVE Our long-term objective is to develop an auditory training program that will enhance speech recognition in those situations where patients most want improvement. As a first step, the current investigation trained participants using either a single talker or multiple talkers to determine if auditory training leads to transfer-appropriate gains. DESIGN The experiment implemented a 2 × 2 × 2 mixed design, with training condition as a between-participants variable and testing interval and test version as repeated-measures variables. Participants completed a computerized six-week auditory training program wherein they heard either the speech of a single talker or the speech of six talkers. Training gains were assessed with single-talker and multi-talker versions of the Four-Choice Discrimination Test. Participants in both groups were tested on both versions. STUDY SAMPLE Sixty-nine adult hearing-aid users were randomly assigned to either single-talker or multi-talker auditory training. RESULTS Both groups showed significant gains on both test versions. Participants who trained with multiple talkers showed greater improvement on the multi-talker version whereas participants who trained with a single talker showed greater improvement on the single-talker version. CONCLUSION Transfer-appropriate gains occurred following auditory training, suggesting that auditory training can be designed to target specific patient needs. PMID:21929377

  3. Higher incremental insulin area under the curve during oral glucose tolerance test predicts less food intake and weight gain.

    PubMed

    He, J; Votruba, S; Venti, C; Krakoff, J

    2011-12-01

    To investigate the correlation of peripheral insulin concentrations with food intake and body weight. Cross sectional and longitudinal clinical study: we investigated the association of peripheral insulin concentrations in response to an oral glucose tolerance test (OGTT) with subsequent measures of ad libitum food intake and body weight change. Food intake analysis: Pima Indians (n=67, 63% male; body mass index (mean ± s.d.) 34.2 ± 9.4 kg m(-2)) with normal glucose regulation (NGR; fasting glucose <5.6 mmol l(-1) and 2-h glucose <7.8 mmol l(-1)) participated in a study of ad libitum food intake measured over 3 days by an automated vending machine system. Weight change analysis: Pima Indians with NGR (n=339) who also participated in a longitudinal study of risks for type 2 diabetes and had follow-up weights. Food intake analysis: incremental area under the curve (iAUC) for insulin during the OGTT was negatively associated with mean daily ad libitum energy intake (DEI) (r=-0.26, P=0.04), calories consumed as percent weight-maintenance energy needs (%WMEN) (r=-0.38, P=0.002) and carbohydrate intake (gram per day) (r=-0.35, P=0.005). Adjustment for age and sex attenuated the association of iAUC with DEI (P=0.06) not with %WMEN and carbohydrate intake (P=0.005, P=0.008). Weight change analysis: after adjustment for age, sex, follow-up time and initial body weight, higher insulin iAUC predicted less absolute and percent weight change (β=-6.9, P=0.02; β=-0.08, P=0.008, respectively). In healthy Pima Indians with NGR, higher plasma iAUC during an OGTT predicted lower food intake and carbohydrate consumption and less weight gain. These data indicated a role for peripheral insulin as a negative feedback signal in the regulation of energy intake and body weight.

  4. Evidence that the oral glucose-tolerance test does not provide a uniform stimulus to pancreatic islets in pregnancy.

    PubMed

    de Leacy, E A; Cowley, D M

    1989-07-01

    Fifty consecutive pregnant patients referred for a glucose-tolerance test were classified on the basis of increasing (n = 20) or decreasing (n = 28) hematocrit after an oral 75-g glucose load. (The hematocrit did not change in the other two patients.) Patients with increasing hematocrit, a response previously seen in patients with the dumping syndrome, showed significantly flatter increases in glucose concentrations in plasma after the load. The mean decrease in the concentration of phosphate in plasma, measured as an index of glucose uptake by cells, was significantly less (P less than 0.05) 2 h after the load in the group with flatter glucose responses, suggesting that the flat response is ascribable to poor glucose absorption rather than to an exaggerated insulin response. These results indicate that the oral glucose-tolerance test stresses the pancreatic islets differently in different pregnant subjects, owing to individual variations in the gastrointestinal handling of the glucose load. Consequently, patients may give a "normal" result who might otherwise become hyperglycemic after normal meals. We suggest that alternative screening procedures be investigated to assess pregnant patients postprandially.

  5. The effects of head-up and head-down tilt on central respiratory chemoreflex loop gain tested by hyperoxic rebreathing.

    PubMed

    Skow, Rachel J; Tymko, Michael M; MacKay, Christina M; Steinback, Craig D; Day, Trevor A

    2014-01-01

    Central respiratory chemosensitivity is mediated via chemoreceptor neurons located throughout brain stem tissue. These receptors detect proximal CO2/[H(+)] (i.e., controller gain) and modulate breathing in a classic negative feedback loop. Loop gain (responsiveness) is the theoretical product of controller (chemoreceptors), mixing/feedback (cardiovascular and cerebrovascular systems), and plant (pulmonary system) gains. The level of chemoreceptor stimulation is determined by interactions between mixing and plant gains. The extent to which steady-state changes in body position may affect central chemoreflex loop gain in response to CO2 is unclear. Because of the potential effects of tilt on pulmonary mechanics, we hypothesized that plant gain would be altered by head-up and head-down tilt (HUT, HDT) during hyperoxic rebreathing, which theoretically isolates plant gain by eliminating systemic arterial-tissue gradients. Sixteen subjects (eight females) underwent hyperoxic rebreathing tests on a tilt table to quantify central chemoreflex loop gain in five steady-state positions: 90° HUT, 45° HUT, supine, 45° HDT, and 90° HDT. Respiratory responses (tidal volume, VT; frequency, fR; minute ventilation, VE) were quantified during steady-state and increases in CO2 during rebreathing by linear regression above the ventilatory recruitment threshold (VRT). Using one-factor analysis of variance, we found that there were no differences in the respiratory responses between the five positions (VRT, P=0.711; VT, P=0.290; fR, P=0.748; VE, P=0.325). Our findings suggest that during steady-state orthostatic stress, the ability of subjects to mount a normal ventilatory response to increased CO2 was unaffected, despite any potential changes in pulmonary mechanics associated with positional challenges.

  6. Impact of the Teacher Advancement Program on Student Test Score Gains: Findings from an Independent Appraisal. Working Paper 2008-19

    ERIC Educational Resources Information Center

    Springer, Matthew G.; Ballou, Dale; Peng, Art

    2008-01-01

    This article presents findings from the first independent, third-party appraisal on the impact of the Teacher Advancement Program (TAP) on student test score gains in mathematics. TAP is a comprehensive school reform model designed to attract highly-effective teachers, improve instructional effectiveness, and elevate student achievement. We use a…

  7. Impact of the Teacher Advancement Program on Student Test Score Gains: Findings from an Independent Appraisal. Working Paper 2008-19

    ERIC Educational Resources Information Center

    Springer, Matthew G.; Ballou, Dale; Peng, Art

    2008-01-01

    This article presents findings from the first independent, third-party appraisal on the impact of the Teacher Advancement Program (TAP) on student test score gains in mathematics. TAP is a comprehensive school reform model designed to attract highly-effective teachers, improve instructional effectiveness, and elevate student achievement. We use a…

  8. Blend uniformity evaluation during continuous mixing in a twin screw granulator by in-line NIR using a moving F-test.

    PubMed

    Fonteyne, Margot; Vercruysse, Jurgen; De Leersnyder, Fien; Besseling, Rut; Gerich, Ad; Oostra, Wim; Remon, Jean Paul; Vervaet, Chris; De Beer, Thomas

    2016-09-07

    This study focuses on the twin screw granulator of a continuous from-powder-to-tablet production line. Whereas powder dosing into the granulation unit is possible from a container of preblended material, a truly continuous process uses several feeders (each one dosing an individual ingredient) and relies on a continuous blending step prior to granulation. The aim of the current study was to investigate the in-line blending capacity of this twin screw granulator, equipped with conveying elements only. The feasibility of in-line NIR (SentroPAT, Sentronic GmbH, Dresden, Germany) spectroscopy for evaluating the blend uniformity of powders after the granulator was tested. Anhydrous theophylline was used as a tracer molecule and was blended with lactose monohydrate. Theophylline and lactose were both fed from a different feeder into the twin screw granulator barrel. Both homogeneous mixtures and mixing experiments with induced errors were investigated. The in-line spectroscopic analyses showed that the twin screw granulator is a useful tool for in-line blending in different conditions. The blend homogeneity was evaluated by means of a novel statistical method being the moving F-test method in which the variance between two blocks of collected NIR spectra is evaluated. The α- and β-error of the moving F-test are controlled by using the appropriate block size of spectra. The moving F-test method showed to be an appropriate calibration and maintenance free method for blend homogeneity evaluation during continuous mixing.

  9. Experimental Setup and Commissioning of a Test Facility for Gain Evaluation of Microchannel-Plate Photomultipliers in High Magnetic Field at Jefferson Lab

    NASA Astrophysics Data System (ADS)

    Bringley, Eric; Cao, Tongtong; Ilieva, Yordonka; Nadel-Turonski, Pawel; Park, Kijun; Zorn, Carl

    2014-09-01

    At the Thomas Jefferson National Accelerator Facility (JLab) a research and development project for a Detector of Internally-Reflected Cherenkov light for the upcoming Electron Ion Collider is underway. One goal is the development of a compact readout camera that can operate in high magnetic fields. Small-size photon sensors, such as Microchannel-Plate Photomultipliers (MCP-PMT), are key components of the readout. Here we present our work to set up and commission a dedicated test facility at JLab where MCP-PMT gain is evaluated in magnetic fields of up to 5 T, and to develop a test procedure and analysis software to determine the gain. We operate the setup in a single-photon mode, where a light-emitting diode delivers photons to the sensor's photocathode. The PMT spectrum is measured with a flash Analog-to-Digital converter (fADC). We model the spectrum as a sum of an exponential background and a convolution of Poisson and Gaussian distributions of the pedestal and multiple photoelectron peaks, respectively. We determine the PMT's gain from the position of the single-photoelectron peak obtained by fitting the fADC spectrum to the model. Our gain uncertainty is <10%. The facility is now established and will have a long-lasting value for sensor tests and beyond-nuclear-physics applications.

  10. Monitoring of the manufacturing process for ambroxol hydrochloride tablet using NIR-chemometric methods: compression effect on content uniformity model and relevant process parameters testing.

    PubMed

    Yang, Hongqin; Liao, Xiaoxiang; Peng, Feng; Wang, Wan; Liu, Yanxin; Yan, Jin; Li, Hui

    2015-01-01

    This study aimed at using near-infrared (NIR) spectroscopy to monitor compaction pressure for simultaneously determining the tensile strength and content uniformity, as well as moisture and mean particle size of ambroxol hydrochloride tablets. The content uniformity, compression force and tensile strength of the laboratory samples were obtained by pressing a mixture of active principle and excipient components into tablets. To reduce the spectral baseline shift of the laboratory samples, the compaction pressure applied to the mixture was assessed by a variable pressure test. Production samples were added to the test and subjected to principal component analysis. The expanded partial least-squares (PLS) calibration model used to quantify the active content was more accurate than the model constructed from laboratory samples using the production tablets included in the calibration set. The model showed good predictability, with correlation coefficient (R) 0.9977. The validation and reliability of the content model were evaluated to determine trueness and reliability for the measurement of individual production tablets and the laboratory tablets with drug content ranging from 24 to 36 mg. The PLS calibration models for compression force and tensile strength were constructed using the same spectral set assuming both were highly related. These models yielded high R values (0.9955 and 0.9910). The R values of the moisture and mean particle size were 0.9994 and 0.9919, respectively. This study demonstrated that NIR spectroscopy combined with chemometric techniques can be successfully used to quantitatively monitor the tablet manufacturing process in the pharmaceutical industry.

  11. Statistical searches for microlensing events in large, non-uniformly sampled time-domain surveys: A test using palomar transient factory data

    SciTech Connect

    Price-Whelan, Adrian M.; Agüeros, Marcel A.; Fournier, Amanda P.; Street, Rachel; Ofek, Eran O.; Covey, Kevin R.; Levitan, David; Sesar, Branimir; Laher, Russ R.; Surace, Jason

    2014-01-20

    Many photometric time-domain surveys are driven by specific goals, such as searches for supernovae or transiting exoplanets, which set the cadence with which fields are re-imaged. In the case of the Palomar Transient Factory (PTF), several sub-surveys are conducted in parallel, leading to non-uniform sampling over its ∼20,000 deg{sup 2} footprint. While the median 7.26 deg{sup 2} PTF field has been imaged ∼40 times in the R band, ∼2300 deg{sup 2} have been observed >100 times. We use PTF data to study the trade off between searching for microlensing events in a survey whose footprint is much larger than that of typical microlensing searches, but with far-from-optimal time sampling. To examine the probability that microlensing events can be recovered in these data, we test statistics used on uniformly sampled data to identify variables and transients. We find that the von Neumann ratio performs best for identifying simulated microlensing events in our data. We develop a selection method using this statistic and apply it to data from fields with >10 R-band observations, 1.1 × 10{sup 9} light curves, uncovering three candidate microlensing events. We lack simultaneous, multi-color photometry to confirm these as microlensing events. However, their number is consistent with predictions for the event rate in the PTF footprint over the survey's three years of operations, as estimated from near-field microlensing models. This work can help constrain all-sky event rate predictions and tests microlensing signal recovery in large data sets, which will be useful to future time-domain surveys, such as that planned with the Large Synoptic Survey Telescope.

  12. Video Head Impulse Tests with a Remote Camera System: Normative Values of Semicircular Canal Vestibulo-Ocular Reflex Gain in Infants and Children

    PubMed Central

    Wiener-Vacher, Sylvette R.; Wiener, Sidney I.

    2017-01-01

    The video head impulse test (VHIT) is widely used to identify semicircular canal function impairments in adults. But classical VHIT testing systems attach goggles tightly to the head, which is not tolerated by infants. Remote video detection of head and eye movements resolves this issue and, here, we report VHIT protocols and normative values for children. Vestibulo-ocular reflex (VOR) gain was measured for all canals of 303 healthy subjects, including 274 children (aged 2.6 months–15 years) and 26 adults (aged 16–67). We used the Synapsys® (Marseilles, France) VHIT Ulmer system whose remote camera measures head and eye movements. HITs were performed at high velocities. Testing typically lasts 5–10 min. In infants as young as 3 months old, VHIT yielded good inter-measure replicability. VOR gain increases rapidly until about the age of 6 years (with variation among canals), then progresses more slowly to reach adult values by the age of 16. Values are more variable among very young children and for the vertical canals, but showed no difference for right versus left head rotations. Normative values of VOR gain are presented to help detect vestibular impairment in patients. VHIT testing prior to cochlear implants could help prevent total vestibular loss and the resulting grave impairments of motor and cognitive development in patients with residual unilateral vestibular function. PMID:28936193

  13. 34 CFR 462.41 - How must tests be administered in order to accurately measure educational gain?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...-tests with an adaptive test that uses computerized algorithms for selecting and administering items in... the Office of Management and Budget under control number 1830-0027) (Authority: 20 U.S.C. 9212) ...

  14. 34 CFR 462.41 - How must tests be administered in order to accurately measure educational gain?

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...-tests with an adaptive test that uses computerized algorithms for selecting and administering items in... the Office of Management and Budget under control number 1830-0027) (Authority: 20 U.S.C. 9212) ...

  15. 34 CFR 462.41 - How must tests be administered in order to accurately measure educational gain?

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...-tests with an adaptive test that uses computerized algorithms for selecting and administering items in... the Office of Management and Budget under control number 1830-0027) (Authority: 20 U.S.C. 9212) ...

  16. 34 CFR 462.41 - How must tests be administered in order to accurately measure educational gain?

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...-tests with an adaptive test that uses computerized algorithms for selecting and administering items in... the Office of Management and Budget under control number 1830-0027) (Authority: 20 U.S.C. 9212) ...

  17. Design and performance testing of an avalanche photodiode receiver with multiplication gain control algorithm for intersatellite laser communication

    NASA Astrophysics Data System (ADS)

    Yu, Xiaonan; Tong, Shoufeng; Dong, Yan; Song, Yansong; Hao, Shicong; Lu, Jing

    2016-06-01

    An avalanche photodiode (APD) receiver for intersatellite laser communication links is proposed and its performance is experimentally demonstrated. In the proposed system, a series of analog circuits are used not only to adjust the temperature and control the bias voltage but also to monitor the current and recover the clock from the communication data. In addition, the temperature compensation and multiplication gain control algorithm are embedded in the microcontroller to improve the performance of the receiver. As shown in the experiment, with the change of communication rate from 10 to 2000 Mbps, the detection sensitivity of the APD receiver varies from -47 to -34 dBm. Moreover, due to the existence of the multiplication gain control algorithm, the dynamic range of the APD receiver is effectively improved, while the dynamic range at 10, 100, and 1000 Mbps is 38.7, 37.7, and 32.8 dB, respectively. As a result, the experimental results agree well with the theoretical predictions, and the receiver will improve the flexibility of the intersatellite links without increasing the cost.

  18. Micelle-enhanced spectrofluorimetric method for determination of cyproheptadine hydrochloride in tablets: application to in-vitro drug release and content uniformity test.

    PubMed

    Belal, F; El-Din, M K Sharaf; Tolba, M M; Elmansi, H

    2014-01-01

    A highly sensitive and simple spectrofluorimetric method was developed for the determination of cyproheptadine hydrochloride (CYP) in its pharmaceutical formulations. The proposed method is based on the investigation of the fluorescence spectral behaviour of CYP in a sodium dodecyl sulphate (SDS) micellar system. In aqueous solution, the fluorescence intensity of CYP was greatly enhanced (150 %) in the presence of SDS. The fluorescence intensity was measured at 410 nm after excitation at 280 nm. The fluorescence-concentration plot was rectilinear over the range 0.2-2.0 μg/mL, with lower detection limit of 0.06 μg/mL. The proposed method was successfully applied to the assay of commercial tablets as well as content uniformity testing. The application of the proposed method was extended to test the in-vitro drug release of CYP tablets, according to USP guidelines. The results were statistically compared with those obtained by official USP method and were found to be in good agreement.

  19. 34 CFR 462.41 - How must tests be administered in order to accurately measure educational gain?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... to its State's assessment policy; and (3) Administer pre-tests to students in the skill areas... students in the same skill areas as the pre-test. (d) Other requirements. (1) A local eligible provider... the Office of Management and Budget under control number 1830-0027) (Authority: 20 U.S.C. 9212)...

  20. Preparing and Testing a Magnetic Antimicrobial Silver Nanocomposite for Water Disinfection To Gain Experience at the Nanochemistry–Microbiology Interface

    DOE PAGES

    Furlan, Ping Y.; Fisher, Adam J.; Melcer, Michael E.; ...

    2017-03-29

    In this article, we describe a 2 h introductory laboratory procedure that prepares a novel magnetic antimicrobial activated carbon nanocomposite in which nanoscale sized magnetite and silver particles are incorporated (MACAg). The MACAg nanocomposite has achieved the synergistic properties derived from its components and demonstrated its applicability as an effective and recoverable antimicrobial agent for water disinfection. The principle is successfully illustrated by a significant reduction in the number of microbes in an Escherichia coli (E. coli) solution of 2 × 106 colony forming units following its treatment with MACAg for 10 min. The exercise allows the college students tomore » (1) be introduced to an exciting class of advanced materials, known as nanocomposites, at an early stage, (2) gain working experiences at nanochemistry–microbiology interface, and (3) see the use and experience the fun of chemistry. The experiment uses readily available materials, can be run in a general or introductory chemistry laboratory environment, and is well received and enjoyed by the students. Lastly, the experiment is also suitable for advanced high school students.« less

  1. How Much Professional Development Is Needed to Effect Positive Gains in K-6 Student Achievement on High Stakes Science Tests?

    ERIC Educational Resources Information Center

    Shymansky, James A.; Wang, Tzu-Ling; Annetta, Leonard A.; Yore, Larry D.; Everett, Susan A.

    2012-01-01

    This paper is a report of a study that examines the relationship between teacher participation in a multi-year, K-6 professional development effort and the "high stakes" science test scores of different student groups in 33 rural mid-west school districts in the USA. The professional development program involved 1,269 elementary school…

  2. How Much Professional Development Is Needed to Effect Positive Gains in K-6 Student Achievement on High Stakes Science Tests?

    ERIC Educational Resources Information Center

    Shymansky, James A.; Wang, Tzu-Ling; Annetta, Leonard A.; Yore, Larry D.; Everett, Susan A.

    2012-01-01

    This paper is a report of a study that examines the relationship between teacher participation in a multi-year, K-6 professional development effort and the "high stakes" science test scores of different student groups in 33 rural mid-west school districts in the USA. The professional development program involved 1,269 elementary school…

  3. Do School Uniforms Fit?

    ERIC Educational Resources Information Center

    White, Kerry A.

    2000-01-01

    In 1994, Long Beach (California) Unified School District began requiring uniforms in all elementary and middle schools. Now, half of all urban school systems and many suburban schools have uniform policies. Research on uniforms' effectiveness is mixed. Tightened dress codes may be just as effective and less litigious. (MLH)

  4. Do School Uniforms Fit?

    ERIC Educational Resources Information Center

    White, Kerry A.

    2000-01-01

    In 1994, Long Beach (California) Unified School District began requiring uniforms in all elementary and middle schools. Now, half of all urban school systems and many suburban schools have uniform policies. Research on uniforms' effectiveness is mixed. Tightened dress codes may be just as effective and less litigious. (MLH)

  5. Should Students Wear Uniforms?

    ERIC Educational Resources Information Center

    Cohn, Carol A.; Siegel, Loren

    1996-01-01

    Two essays present opposing viewpoints on school uniforms. One suggests that uniforms make safer schools and better students. The other states that teenagers will rebel, and the uniform debate is a diversion from more pressing problems in education. The article includes brief opinion statements from teachers and other professionals. (SM)

  6. School Uniforms Redux.

    ERIC Educational Resources Information Center

    Dowling-Sendor, Benjamin

    2002-01-01

    Reviews a recent decision in "Littlefield" by the 5th Circuit upholding a school uniform policy. Advises board member who wish to adopt a school uniform policy to solicit input from parents and students, research the experiences of other school districts with uniform policies, and articulate the interests they wish to promote through uniform…

  7. Validated stability indicating liquid chromatographic determination of ebastine in pharmaceuticals after pre column derivatization: Application to tablets and content uniformity testing

    PubMed Central

    2011-01-01

    An accurate, simple, sensitive and selective reversed phase liquid chromatographic method has been developed for the determination of ebastine in its pharmaceutical preparations. The proposed method depends on the complexation ability of the studied drug with Zn2+ ions. Reversed phase chromatography was conducted using an ODS C18 (150 × 4.6 mm id) stainless steel column at ambient temperature with UV-detection at 260 nm. A mobile phase containing 0.025%w/v Zn2+ in a mixture of (acetonitril/methanol; 1/4) and Britton Robinson buffer (65:35, v/v) adjusted to pH 4.2, has been used for the determination of ebastine at a flow rate of 1 ml/min. The calibration curve was rectilinear over the concentration range of 0.3 - 6.0 μg/ml with a detection limit (LOD) of 0.13 μg/ml, and quantification limit (LOQ) of 0.26 μg/ml. The proposed method was successfully applied for the analysis of ebastine in its dosage forms, the obtained results were favorably compared with those obtained by a comparison method. Furthermore, content uniformity testing of the studied pharmaceutical formulations was also conducted. The composition of the complex as well as its stability constant was also investigated. Moreover, the proposed method was found to be a stability indicating one and was utilized to investigate the kinetics of alkaline and ultraviolet induced degradation of the drug. The first-order rate constant and half life of the degradation products were calculated. PMID:21554731

  8. Validated stability indicating liquid chromatographic determination of ebastine in pharmaceuticals after pre column derivatization: Application to tablets and content uniformity testing.

    PubMed

    Ibrahim, Fawzia; Sharaf El-Din, Mohie Khaled; Eid, Manal Ibrahim; Wahba, Mary Elias Kamel

    2011-05-09

    An accurate, simple, sensitive and selective reversed phase liquid chromatographic method has been developed for the determination of ebastine in its pharmaceutical preparations. The proposed method depends on the complexation ability of the studied drug with Zn2+ ions. Reversed phase chromatography was conducted using an ODS C18 (150 × 4.6 mm id) stainless steel column at ambient temperature with UV-detection at 260 nm. A mobile phase containing 0.025%w/v Zn2+ in a mixture of (acetonitril/methanol; 1/4) and Britton Robinson buffer (65:35, v/v) adjusted to pH 4.2, has been used for the determination of ebastine at a flow rate of 1 ml/min. The calibration curve was rectilinear over the concentration range of 0.3 - 6.0 μg/ml with a detection limit (LOD) of 0.13 μg/ml, and quantification limit (LOQ) of 0.26 μg/ml. The proposed method was successfully applied for the analysis of ebastine in its dosage forms, the obtained results were favorably compared with those obtained by a comparison method. Furthermore, content uniformity testing of the studied pharmaceutical formulations was also conducted. The composition of the complex as well as its stability constant was also investigated. Moreover, the proposed method was found to be a stability indicating one and was utilized to investigate the kinetics of alkaline and ultraviolet induced degradation of the drug. The first-order rate constant and half life of the degradation products were calculated.

  9. [A simple ELISA method for the detection of HBsAg: Organon Teknika HBsAg Uniform II screening and confirmation test. Comparative study using the HBsAg Hapanostika method. A multicenter study].

    PubMed

    Pár, A; Mihály, I; Kömives, K

    1994-09-25

    An one-step enzyme-linked immunoabsorbent method, named as HBsAg Uniform II has been described for the detection of serum HBsAg, and a comparison was made with a widely used ELISA technique HBsAg Hepanostika test, to evaluate sensitivity, specificity and reproducibility of the method. A total of 531 serum samples from patients with liver disease and with renal failure, as well as 1065 samples from blood donors have been investigated. While the sensitivity of Uniform II vs. Hepanostika was 99.5% vs. 72.7%, the specificity was 99.2% of both methods. The positive predictive values did not differ (99.5% vs. 99.2%), however, the negative predictive values were 99.2% vs. 71.7%, respectively, in favour of Uniform II test. The Uniform II confirmatory test confirmed the positive HBsAg results in 94%, this rate was 74% using Hepanostika system. The new method proved to be a simple, quick, reliable test, which can be useful as a valuable tool in both the clinical diagnosis and blood donor screening.

  10. Receiver Gain Modulation Circuit

    NASA Technical Reports Server (NTRS)

    Jones, Hollis; Racette, Paul; Walker, David; Gu, Dazhen

    2011-01-01

    A receiver gain modulation circuit (RGMC) was developed that modulates the power gain of the output of a radiometer receiver with a test signal. As the radiometer receiver switches between calibration noise references, the test signal is mixed with the calibrated noise and thus produces an ensemble set of measurements from which ensemble statistical analysis can be used to extract statistical information about the test signal. The RGMC is an enabling technology of the ensemble detector. As a key component for achieving ensemble detection and analysis, the RGMC has broad aeronautical and space applications. The RGMC can be used to test and develop new calibration algorithms, for example, to detect gain anomalies, and/or correct for slow drifts that affect climate-quality measurements over an accelerated time scale. A generalized approach to analyzing radiometer system designs yields a mathematical treatment of noise reference measurements in calibration algorithms. By treating the measurements from the different noise references as ensemble samples of the receiver state, i.e. receiver gain, a quantitative description of the non-stationary properties of the underlying receiver fluctuations can be derived. Excellent agreement has been obtained between model calculations and radiometric measurements. The mathematical formulation is equivalent to modulating the gain of a stable receiver with an externally generated signal and is the basis for ensemble detection and analysis (EDA). The concept of generating ensemble data sets using an ensemble detector is similar to the ensemble data sets generated as part of ensemble empirical mode decomposition (EEMD) with exception of a key distinguishing factor. EEMD adds noise to the signal under study whereas EDA mixes the signal with calibrated noise. It is mixing with calibrated noise that permits the measurement of temporal-functional variability of uncertainty in the underlying process. The RGMC permits the evaluation of EDA by

  11. Uniform Media Effects and Uniform Audience Responses.

    ERIC Educational Resources Information Center

    Perry, David K.

    The idea that mass communication effects may decrease diversity among people or societies exposed to it arises constantly. However, discussions of mass media effects do not highlight differences between mass communications that "affect" people uniformly and messages that members of audiences "respond to" in similar ways. A…

  12. Genetic associations between daily BW gain and live fleshiness of station-tested young bulls and carcass and meat quality traits of commercial intact males in Piemontese cattle.

    PubMed

    Bonfatti, V; Albera, A; Carnier, P

    2013-05-01

    The aim of this study was to investigate genetic relationships between beef traits of station-tested young bulls and carcass and meat quality traits (MQ) of commercial intact males in Piemontese cattle. Phenotypes for daily gain (DG) and live fleshiness traits (width at withers: WW; shoulder muscularity: SM; loin width: LW; loin thickness: LT; thigh muscularity: TM; thigh profile: TP) and thinness of the shin bone (BT) were available for 3,109 and 2,183 performance-tested young bulls, respectively. Carcass daily gain (CDG), carcass conformation (SEUS), pH at 24 h (pH24h) and 8 d after slaughter (pH8d), lightness (L*), redness (a*), yellowness (b*), hue angle (HA), saturation index (SI), drip loss (DL), cooking loss (CL), and shear force (SF) were assessed for 1,208 commercial intact males. (Co) variance components were estimated in a set of twelve 9-traits analyses using REML and linear animal models including all performance-test traits and 1 carcass or MQ trait at a time. Heritabilities ± SE of beef traits ranged from 0.26 ± 0.03 (LW) to 0.47 ± 0.01 (DG), whereas those of carcass traits and MQ from 0.06 ± 0.03 (CL) to 0.63 ± 0.04 (HA). The genetic correlation (rg) between DG and CDG was 0.75 ± 0.10, indicating that DG, as measured at the test station, is a good indicator of the carcass gain achieved by commercial animals under farms conditions. Daily BW gain of station-tested bulls correlated positively with color traits (from 0.11 ± 0.12 to 0.54 ± 0.09), ph8d (rg ± SE = 0.31 ± 0.11), DL (rg ± SE = 0.29 ± 0.17), and CL (rg ± SE = 0.27 ± 0.18). Live fleshiness of station-tested bulls exhibited genetic correlations with MQ of commercial animals that were positive for L* and b* (from 0.13 ± 0.08 to 0.65 ± 0.14) and negative for pH (from -0.27 ± 0.15 to -0.57 ± 0.11), CL (from -0.16 ± 0.23 to -0.43 ± 0.22), and SF (TM: rg ± SE = -0.31 ± 0.15; TP: rg ± SE = -0.41 ± 0.17). The thinness of the shin bone correlated unfavorably with CDG (rg ± SE

  13. Uniform Continuity of POVMs

    NASA Astrophysics Data System (ADS)

    Beneduci, Roberto

    2014-10-01

    Recently a characterization of uniformly continuous POVMs and a necessary condition for a uniformly continuous POVM F to have the norm-1 property have been provided. Moreover it was proved that in the commutative case, uniform continuity corresponds to the existence of a Feller Markov kernel. We apply such results to the analysis of some relevant physical examples; i.e., the phase space localization observables, the unsharp phase observable and the unsharp number observable of which we study the uniform continuity, the norm-1 property and the existence of a Feller Markov kernel.

  14. School Uniforms. Research Brief

    ERIC Educational Resources Information Center

    Walker, Karen

    2007-01-01

    Does clothing make the person or does the person make the clothing? How does what attire a student wears to school affect their academic achievement? In 1996, President Clinton cited examples of school violence and discipline issues that might have been avoided had the students been wearing uniforms ("School uniforms: Prevention or suppression?").…

  15. Manual on School Uniforms.

    ERIC Educational Resources Information Center

    Department of Justice, Washington, DC.

    In response to growing levels of violence in American schools, many communities are deciding to adopt school-uniform policies as part of an overall program to improve school safety and discipline. This document provides the following guidelines for parents, teachers, and school leaders who may consider adopting a school-uniform policy: (1) Get…

  16. Dress Codes and Uniforms.

    ERIC Educational Resources Information Center

    Lumsden, Linda; Miller, Gabriel

    2002-01-01

    Students do not always make choices that adults agree with in their choice of school dress. Dress-code issues are explored in this Research Roundup, and guidance is offered to principals seeking to maintain a positive school climate. In "Do School Uniforms Fit?" Kerry White discusses arguments for and against school uniforms and summarizes the…

  17. Uniform magnesium oxide adsorbents

    NASA Technical Reports Server (NTRS)

    Dash, J. G.; Ecke, R.; Stoltenberg, J.; Vilches, O. E.; Whittemore, O. J., Jr.

    1978-01-01

    Kr adsorption on MgO is used to characterize the surface uniformity of MgO smoke and thermally decomposed Mg(OH)2. It is found that initially heterogeneous samples develop progressively sharper stepwise isotherms with increasingly-high-temperature heat treatment, apparently due to the removal of imperfections and high-energy facets, leaving surfaces of highly uniform (100) planes.

  18. Development of a phantom and assessment of (141)Ce as a surrogate radionuclide for flood field uniformity testing of gamma cameras.

    PubMed

    Saxena, Sanjay Kumar; Kumar, Yogendra; Malpani, Basant; Rakshit, Sutapa; Dash, Ashutosh

    2016-06-01

    This paper describes an indigenous method for development and deployment of rechargeable liquid filled phantom with newly proposed radionuclide (141)Ce for determination of extrinsic uniformity of gamma cameras. Details about design of phantom, neutron irradiation of cerium targets, chemical processing of (141)Ce, charging of phantom with (141)Ce solution and their performance evaluation are presented. Suitability of (141)Ce in quality assurance of gamma cameras used in in-vivo diagnostic imaging procedures has been amply demonstrated.

  19. Laboratory assessment by combined z score values in proficiency tests: experience gained through the European Union proficiency tests for pesticide residues in fruits and vegetables.

    PubMed

    Medina-Pastor, P; Mezcua, M; Rodríguez-Torreblanca, C; Fernández-Alba, A R

    2010-08-01

    The obligation for accredited laboratories to participate in proficiency tests under ISO 17025, performing multiresidue methods (MRMs) for pesticide residues, involves the reporting of a large number of individual z scores making the evaluation of the overall performance of the laboratories difficult. It entails, time and again, the need for ways to summarise the laboratory's overall assessment into a unique combined index. In addition, the need for ways to continually evaluate the performance of the laboratory over the years is equally acknowledged. For these reasons, following 14 years of the European Union Reference Laboratory for Pesticide Residues in Fruits and Vegetables (EUPT-FV), useful formulas have been designed to globally evaluate the assessment of the participating laboratories. The aim is to achieve a formula which is easy to understand, which can be applied and which fits the purposes of long-term evaluation detecting positive and negative trends. Moreover, consideration is needed for a fair compensation of bad results in MRM, taking into account the large number of compounds that are covered. It is therefore important to be aware of the difficulties in getting satisfactory values from a wide range of compounds. This work presents an evaluation of the main well-established combined z score formulas together with those new ones developed here which have been applied to the European proficiency test results (EUPTs) over the years. Previous formulas such as the rescaled sum of z score (RSZ), the sum squared of z score (SSZ) and the relative laboratory performance (RLP) are compared with the newer ones: the sum of weighted z scores (SWZ) and the sum of squared z scores (SZ2). By means of formula comparisons, conclusions on the advantages, drawbacks and the most fit-for-purpose approach are achieved.

  20. Large barrier, highly uniform and reproducible Ni-Si/4H-SiC forward Schottky diode characteristics: testing the limits of Tung's model

    NASA Astrophysics Data System (ADS)

    Omar, Sabih U.; Sudarshan, Tangali S.; Rana, Tawhid A.; Song, Haizheng; Chandrashekhar, M. V. S.

    2014-07-01

    We report highly ideal (n < 1.1), uniform nickel silicide (Ni-Si)/SiC Schottky barrier (1.60-1.67 eV with a standard deviation <2.8%) diodes, fabricated on 4H-SiC epitaxial layers grown by chemical vapour deposition. The barrier height was constant over a wide epilayer doping range of 1014-1016 cm-3, apart from a slight decrease consistent with image force lowering. This remarkable uniformity was achieved by careful optimization of the annealing of the Schottky interface to minimize non-idealities that could lead to inhomogeneity. Tung's barrier inhomogeneity model was used to quantify the level of inhomogeneity in the optimized annealed diodes. The estimated ‘bulk’ barrier height (1.75 eV) was consistent with the Shockley-Mott limit for the Ni-Si/4H-SiC interface, implying an unpinned Fermi level. But the model was not useful to explain the poor ideality in unoptimized, as-deposited Schottky contacts (n = 1.6 - 2.5). We show analytically and numerically that only idealities n < 1.21 can be explained using Tung's model, irrespective of material system, indicating that the barrier height inhomogeneity is not the only cause of poor ideality in Schottky diodes. For explaining this highly non-ideal behaviour, other factors (e.g. interface traps, morphological defects, extrinsic impurities, etc) need to be considered.

  1. Impact of Uniform Methods on Interlaboratory Antibody Titration Variability: Antibody Titration and Uniform Methods.

    PubMed

    Bachegowda, Lohith S; Cheng, Yan H; Long, Thomas; Shaz, Beth H

    2017-01-01

    -Substantial variability between different antibody titration methods prompted development and introduction of uniform methods in 2008. -To determine whether uniform methods consistently decrease interlaboratory variation in proficiency testing. -Proficiency testing data for antibody titration between 2009 and 2013 were obtained from the College of American Pathologists. Each laboratory was supplied plasma and red cells to determine anti-A and anti-D antibody titers by their standard method: gel or tube by uniform or other methods at different testing phases (immediate spin and/or room temperature [anti-A], and/or anti-human globulin [AHG: anti-A and anti-D]) with different additives. Interlaboratory variations were compared by analyzing the distribution of titer results by method and phase. -A median of 574 and 1100 responses were reported for anti-A and anti-D antibody titers, respectively, during a 5-year period. The 3 most frequent (median) methods performed for anti-A antibody were uniform tube room temperature (147.5; range, 119-159), uniform tube AHG (143.5; range, 134-150), and other tube AHG (97; range, 82-116); for anti-D antibody, the methods were other tube (451; range, 431-465), uniform tube (404; range, 382-462), and uniform gel (137; range, 121-153). Of the larger reported methods, uniform gel AHG phase for anti-A and anti-D antibodies had the most participants with the same result (mode). For anti-A antibody, 0 of 8 (uniform versus other tube room temperature) and 1 of 8 (uniform versus other tube AHG), and for anti-D antibody, 0 of 8 (uniform versus other tube) and 0 of 8 (uniform versus other gel) proficiency tests showed significant titer variability reduction. -Uniform methods harmonize laboratory techniques but rarely reduce interlaboratory titer variance in comparison with other methods.

  2. Does child and adolescent mental health in-service training result in equivalent knowledge gain among cadres of non-specialist health workers in Uganda? A pre-test post-test study.

    PubMed

    Akol, Angela; Nalugya, Joyce; Nshemereirwe, Sylvia; Babirye, Juliet N; Engebretsen, Ingunn Marie Stadskleiv

    2017-01-01

    Early identification and management of child and adolescent mental health (CAMH) disorders helps to avert mental illness in adulthood but a CAMH treatment gap exists in Uganda. CAMH integration into primary health care (PHC) through in-service training of non-specialist health workers (NSHW) using the World Health Organisation (WHO) Mental Health Gap Action Programme (mhGAP) Intervention Guide (IG) is a strategy to address this gap. However, results of such training are not supported by information on training development or delivery; and are undifferentiated by NSHW cadre. We aim to describe an in-service CAMH training for NSHW in Uganda and assess cadre-differentiated learning outcomes. Thirty-six clinical officers, nurses and midwives from 18 randomly selected PHC clinics in eastern Uganda were trained for 5 days on CAMH screening and referral using a curriculum based on the mhGAP-IG version 1.0 and PowerPoint slides from the International Association of Child and Adolescent Psychiatry and Allied Professions (IACAPAP). The residential training was evaluated through pre- and post- training tests of CAMH knowledge and attitudes using the participants' post-test scores; and the difference between pre-test and post-test scores. Two-tailed t-tests assessed differences in mean pre-test and post-test scores between the cadres; hierarchical linear regression tested the association between cadre and post test scores; and logistic regression evaluated the relationship between cadre and knowledge gain at three pre-determined cut off points. Thirty-three participants completed both pre-and post-tests. Improved mean scores from pre- to post-test were observed for both clinical officers (20% change) and nurse/midwives (18% change). Clinical officers had significantly higher mean test scores than nurses and midwives (p < 0.05) but cadre was not significantly associated with improvement in CAMH knowledge at the 10% (AOR 0.08; 95 CI [0.01, 1.19]; p = 0.066), 15% (AOR 0

  3. Tradeoff on gain-flatness and gain-stabilization of erbium doped fiber amplifier with FBGs

    NASA Astrophysics Data System (ADS)

    Buyin, Garidi; OuYang, Yunlun; Ma, Yu; Chang, Jinlong; Liu, Changxing; Yang, Jiuru

    2014-07-01

    It is a challenge to get gain-stabilization and gain-flatness of erbium doped fiber amplifier (EDFA) in C-band, simultaneously. In this article, we establish a gain-clamped EDFA model based uniform fiber grating-pair and optimize the reflectivity of grating by the designed targets. The tradeoff between stabilization and flatness can be obtained when an ideal reflectivity is adopted. The numerical results show that the gain-stabilization is controlled in +/-0.1dB and gain-flatness is less than +/-1.41dB in the range from 1535nm to 1565nm.

  4. Effective Instruction and Assessment Methods That Lead to Gains in Critical Thinking as Measured by the Critical Thinking Assessment Test (CAT)

    ERIC Educational Resources Information Center

    Leming, Katie P.

    2016-01-01

    Previous qualitative research on educational practices designed to improve critical thinking has relied on anecdotal or student self-reports of gains in critical thinking. Unfortunately, student self-report data have been found to be unreliable proxies for measuring critical thinking gains. Therefore, in the current interpretivist study, five…

  5. Determining irrigation distribution uniformity and efficiency for nurseries

    Treesearch

    R. Thomas Fernandez

    2010-01-01

    A simple method for testing the distribution uniformity of overhead irrigation systems is described. The procedure is described step-by-step along with an example. Other uses of distribution uniformity testing are presented, as well as common situations that affect distribution uniformity and how to alleviate them.

  6. 10 CFR Appendix M to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Central Air Conditioners and Heat Pumps

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... ENERGY ENERGY CONSERVATION ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS Test Procedures Pt. 430... reference, see § 430.22). 3. Testing Procedures 3.1General Requirements. If, during the testing process, an... highest fan motor pin setting, next highest fan motor speed) and repeat the evaluation process beginning...

  7. The effect of a county's public high school summer remediation program on student gains on end-of-course standard of learning tests in Algebra I, Biology, Chemistry, Geometry and World History and Geography II

    NASA Astrophysics Data System (ADS)

    Aiken, Brenda L.

    The Commonwealth of Virginia requires high school students to receive a passing grade in core courses and a passing score on End-of-Course Standards of Learning (EOC SOL) tests to receive verified credits that lead to a Virginia high school diploma. These tests are believed to accurately reflect what students should know and be able to do in order to experience success in their endeavors beyond high school. For some students remediation is required to experience success on EOC SOL tests. This study sought to determine the effect of a County's public high school summer remediation program on student gains on EOC SOL tests in Algebra I, Biology, Chemistry, Geometry, and World History and Geography II. Specifically, the purpose of the study sought to determine the following: (a) If significant gains were made by students who attended the summer remediation program; (b) If significant gains were made by students who did not attend the summer remediation program; (c) If there were differences in gain scores of students who attended and those who did not attend the summer remediation program; and (d) If there were differences in gain scores among students who attended the summer remediation program related to school site, gender, ethnicity, learning ability group, socioeconomic status, and level of English proficiency. The results of the study indicate that students who attended and those who did not attend the summer remediation program made significant gains. However, the gains for students who attended the summer remediation program were significantly greater than the gains made by students who did not attend. The study also found that there were no significant differences in gain scores among students who attended the summer remediation program related to gender, ethnicity, learning ability group, socioeconomic status, and level of English proficiency. There were significant differences in Algebra I gain scores related to school site. Recommendations for

  8. Radially uniform electron source

    NASA Technical Reports Server (NTRS)

    Mccomas, D.; Bame, S. J.

    1982-01-01

    A thermionic electron source capable of producing uniform count rates in a number of channel electron multipliers simultaneously was required for conditioning multipliers for an extended space mission. It was found that a straight tungsten filament in the center of a cylindrically symmetric geometry surrounded by an array of multipliers emits a radially asymmetric distribution of electrons that changes with time. A source was developed which successfully produces a time-independent radially uniform distribution of electrons by moving the filament out of the direct line of sight and replacing it with a centrally located electron 'cloud.'

  9. Uniformity in Tetrahedral Hohlraums

    NASA Astrophysics Data System (ADS)

    Craxton, R. S.; Schnittman, J. D.; Pollaine, S. M.

    1996-11-01

    Tetrahedral hohlraums, i.e., spherical hohlraums with four laser entrance holes (LEH's), offer an alternative means of obtaining good time-independent capsule irradiation uniformity. Since the laser spots are spread fairly uniformly over the hohlraum wall, time-dependent uniformity swings are minimized. Using the 3-D view-factor code BUTTERCUP we have found, for both OMEGA and the NIF, that the uniformity is typically ~2% rms at all times, mainly in the Y_32 mode, but can be reduced to ~1% by independently varying the power in each beam. We have investigated the sensitivity of tetrahedral hohlraums to errors in beam-energy balance and pointing, and we have examined how large the LEH's must be to allow the beams to go through without refraction or absorption. This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC03-92SF19460. *Also Lawrence Livermore National Laboratory.

  10. Uniform Federal Accessibility Standards.

    ERIC Educational Resources Information Center

    Department of Housing and Urban Development, Washington, DC.

    The document presents uniform standards for facility accessibility by physically handicapped persons for Federal and federally funded facilities. The standards are to be applied during the design, construction, and alteration of buildings and facilities to the extent required by the Architectural Barriers Act of 1968, as amended. Technical…

  11. 10 CFR Appendix M to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Central Air Conditioners and Heat Pumps

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... mode energy consumption (i.e., sections 3.13 and 4.2.8 of this appendix M) need not be performed to... two or more indoor thermostats. For any test where the system is operated at part load (i.e., one or... all tests. 2.3.1Cooling tests. a. Set indoor fan control options (e.g., fan motor pin settings, fan...

  12. 10 CFR Appendix M to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Central Air Conditioners and Heat Pumps

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... mode energy consumption (i.e., sections 3.13 and 4.2.8 of this appendix M) need not be performed to... operate using two or more indoor thermostats. For any test where the system is operated at part load (i.e... all tests. 2.3.1 Cooling tests. a. Set indoor fan control options (e.g., fan motor pin settings, fan...

  13. 10 CFR Appendix M to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Central Air Conditioners and Heat Pumps

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... mode energy consumption (i.e., sections 3.13 and 4.2.8 of this appendix M) need not be performed to... two or more indoor thermostats. For any test where the system is operated at part load (i.e., one or... all tests. 2.3.1Cooling tests. a. Set indoor fan control options (e.g., fan motor pin settings, fan...

  14. Testing the feasibility of a mobile technology intervention promoting healthy gestational weight gain in pregnant women (txt4two) - study protocol for a randomised controlled trial.

    PubMed

    Willcox, Jane Catherine; Campbell, Karen Jane; McCarthy, Elizabeth Anne; Wilkinson, Shelley Ann; Lappas, Martha; Ball, Kylie; Fjeldsoe, Brianna; Griffiths, Anne; Whittaker, Robyn; Maddison, Ralph; Shub, Alexis; Pidd, Deborah; Fraser, Elise; Moshonas, Nelly; Crawford, David Andrew

    2015-05-07

    Overweight, obesity and excess gestational weight gain (GWG) are associated with negative health outcomes for mother and child in pregnancy and across the life course. Interventions promoting GWG within guidelines report mixed results. Most are time and cost intensive, which limits scalability. Mobile technologies (mHealth) offer low cost, ready access and individually-tailored support. We aim to test the feasibility of an mHealth intervention promoting healthy nutrition, physical activity and GWG in women who begin pregnancy overweight or obese. txt4two is a parallel randomised control trial pilot recruiting women with a singleton, live gestation between 10(+0) and 17(+6) weeks at the first hospital antenatal clinic visit. Inclusion criteria are pre-pregnancy BMI > 25 kg/m(2) and mobile phone ownership. One hundred consenting women will be randomised to intervention or control groups at a 1:1 ratio. All participants will receive standard antenatal care. In addition, the txt4two intervention will be delivered from baseline to 36 weeks gestation and consists of a tailored suite of theoretically-grounded, evidence-based intervention strategies focusing on healthy nutrition, physical activity and GWG. This includes: mobile phone interactive text messages promoting positive health behaviours, goal setting and self-monitoring; video messages; an information website; and a private moderated Facebook® chat forum. The primary outcome is the feasibility of the intervention. Secondary outcomes include GWG and participants' knowledge and behaviour regarding diet and physical activity during pregnancy. Findings will inform the development of larger-scale mHealth programmes to improve the delivery of healthy pregnancy nutrition, physical activity and GWG, that could be widely translated and disseminated. Australian New Zealand Clinical Trials Registry: ACTRNU111111544397 . Date of registration: 19 March 2014.

  15. 10 CFR Appendix G to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Unvented Home Heating Equipment

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... controls at 7 to 10 inches of water column. The regulator outlet pressure at normal supply test pressure... no greater than one percent. Alternatively, the test can be conducted using “bottled” natural gas of... actual higher heating value of the bottled natural gas has been determined with an error no greater than...

  16. The Effectiveness and Unique Contribution of Neuropsychological Tests and the δ Latent Phenotype in the Differential Diagnosis of Dementia in the Uniform Data Set

    PubMed Central

    John, Samantha E.; Gurnani, Ashita S.; Bussell, Cara; Saurman, Jessica L.; Griffin, Jason W.; Gavett, Brandon E.

    2016-01-01

    Objective Two main approaches to the interpretation of cognitive test performance have been utilized for the characterization of disease: evaluating shared variance across tests, as with measures of severity, and evaluating the unique variance across tests, as with pattern and error analysis. Both methods provide necessary information, but the unique contributions of each are rarely considered. This study compares the two approaches on their ability to differentially diagnose with accuracy, while controlling for the influence of other relevant demographic and risk variables. Method Archival data requested from the NACC provided clinical diagnostic groups that were paired to one another through a genetic matching procedure. For each diagnostic pairing, two separate logistic regression models predicting clinical diagnosis were performed and compared on their predictive ability. The shared variance approach was represented through the latent phenotype δ, which served as the lone predictor in one set of models. The unique variance approach was represented through raw score values for the 12 neuropsychological test variables comprising δ, which served as the set of predictors in the second group of models. Results Examining the unique patterns of neuropsychological test performance across a battery of tests was the superior method of differentiating between competing diagnoses, and it accounted for 16-30% of the variance in diagnostic decision making. Conclusion Implications for clinical practice are discussed, including test selection and interpretation. PMID:27797542

  17. 10 CFR Appendix J1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... for ten minutes in soft water (17 ppm hardness or less) using 6.0 grams per gallon of water of AHAM... repellent finishes, such as fluoropolymer stain resistant finishes shall not be applied to the test...

  18. 10 CFR Appendix J1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...) using 27.0 grams + 4.0 grams per pound of cloth load of AHAM Standard detergent Formula 3. The wash... fluoropolymer stain resistant finishes shall not be applied to the test cloth. The absence of such...

  19. 10 CFR Appendix J2 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... hardness or less) using 27.0 grams + 4.0 grams per pound of cloth load of AHAM Standard detergent Formula 3... repellent finishes, such as fluoropolymer stain resistant finishes shall not be applied to the test...

  20. 10 CFR Appendix J1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... for ten minutes in soft water (17 ppm hardness or less) using 6.0 grams per gallon of water of AHAM... repellent finishes, such as fluoropolymer stain resistant finishes shall not be applied to the test...

  1. 10 CFR Appendix J1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... for ten minutes in soft water (17 ppm hardness or less) using 6.0 grams per gallon of water of AHAM... repellent finishes, such as fluoropolymer stain resistant finishes shall not be applied to the test...

  2. Analysis of HTLV-1 proviral load (PVL) and antibody detected with various kinds of tests in Japanese blood donors to understand the relationship between PVL and antibody level and to gain insights toward better antibody testing.

    PubMed

    Matsumoto, Chieko; Sagara, Yasuko; Sobata, Rieko; Inoue, Yukiko; Morita, Maiko; Uchida, Shigeharu; Kiyokawa, Hiroyuki; Satake, Masahiro; Tadokoro, Kenji

    2017-08-01

    Adult T-cell leukemia/lymphoma (ATL) occurs in approximately 5% of individuals infected with human T-cell leukemia virus type 1 (HTLV-1). A high proviral load (PVL; more than four copies per 100 peripheral blood mononuclear cells (PBMCs) or 1.6 copies per 100 blood leukocytes) and being male are risk factors for ATL development. Whether anti-HTLV-1 antibody level is related to such risk is unknown. Here, PVL and antibody levels were examined using real-time PCR and other tests in 600 HTLV-1 positive screened Japanese blood donors to understand the relationship between PVL and antibody level in asymptomatic carriers and to gain insights toward better antibody testing for HTLV-1 infection. The 430 donors in whom proviral DNA was detected were considered as true positives for HTLV-1 infection. Among donors aged 40 years or older, more males than females had a PVL corresponding to more than 1.6% infected leukocytes, and an antibody titer below the median (P = 0.0018). In antibody tests using an HTLV-1 positive cell line or Env antigens there was a large discrepancy in antibody titer among 13 provirus-positive samples, probably suggesting that antibody-based screening tests should incorporate multiple HTLV-1 antigens, such as Gag and Env antigens. © 2017 Wiley Periodicals, Inc.

  3. 10 CFR Appendix J2 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... minutes with a minimum fill of 20 gallons of soft water (17 ppm hardness or less) using 27.0 grams + 4.0 grams per pound of cloth load of AHAM Standard detergent Formula 3. The wash temperature is to be... stain resistant finishes shall not be applied to the test cloth. The absence of such finishes shall...

  4. 10 CFR Appendix Q1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Fluorescent Lamp Ballasts

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... programmed- and rapid-start ballast test setup includes two 1000 ohm resistors placed in parallel with the... ballast in accordance with the circuit shown in Figure 4 of this section. ER04MY11.021 3.3.4.2. DC Control...), connected to the ballast in accordance with the circuit shown in Figure 5 of this section. The DC...

  5. 10 CFR Appendix R to Subpart B of... - Uniform Test Method for Measuring Average Lamp Efficacy (LE), Color Rendering Index (CRI), and...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... fluorescent lamps, the ambient conditions of the test and the electrical circuits, reference ballasts... reference circuit as described in ANSI C82.3 (incorporated by reference; see § 430.3). If, for a lamp, both... determined as total forward lumens, and may be measured in an integrating sphere at the reference...

  6. 10 CFR Appendix V to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan Light Kits

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... of Ceiling Fan Light Kits V Appendix V to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Light Kits 1. Scope: This appendix covers the test requirements used to measure the energy performance of ceiling fan light kits. 2. Definitions: a. Input power means the actual total power used by...

  7. 10 CFR Appendix V to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Ceiling Fan Light Kits

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... of Ceiling Fan Light Kits V Appendix V to Subpart B of Part 430 Energy DEPARTMENT OF ENERGY ENERGY... Light Kits 1. Scope: This appendix covers the test requirements used to measure the energy performance of ceiling fan light kits. 2. Definitions: a. Input power means the actual total power used by...

  8. 10 CFR Appendix A1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Electric Refrigerators and Electric...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... volume as defined in HRF-1-1979, in cubic feet. 1.3“Anti-sweat heater” means a device incorporated into... includes any electrical or mechanical device. Demand defrost is a type of variable defrost control. 1.12... °C) during the test period. The temperature measuring devices shall have an error not greater than...

  9. 10 CFR 431.304 - Uniform test method for the measurement of energy consumption of walk-in coolers and walk-in...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... it is produced in its final chemical form. Foam produced inside of a panel (“foam-in-place”) must be... shall be tested after it is produced in its final chemical form. Foam produced inside of a panel (“foam... set forth in AHRI 1250 and recording the annual energy consumption term in the equation for...

  10. 10 CFR Appendix A1 to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Electric Refrigerators and Electric...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... test procedure. 1.1“Adjusted total volume” means the sum of (i) the fresh food compartment volume as... refrigerator which does not include a compartment for the freezing and long time storage of food at... formation of frost on all refrigerated surfaces. Nominal refrigerated food temperatures are maintained...

  11. 10 CFR Appendix A to Subpart B of... - Uniform Test Method for Measuring the Energy Consumption of Electric Refrigerators and Electric...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... test procedure. 1.1“Adjusted total volume” means the sum of: (i) The fresh food compartment volume as... storage of food at temperatures below 32 °F (0.0 °C). It may include a compartment of 0.50 cubic-foot... prevents the permanent formation of frost on all refrigerated surfaces. Nominal refrigerated food...

  12. Theoretical aspects for estimating anisotropic saturated hydraulic conductivity from in-well or direct-push probe injection tests in uniform media

    NASA Astrophysics Data System (ADS)

    Klammler, Harald; Layton, Leif; Nemer, Bassel; Hatfield, Kirk; Mohseni, Ana

    2017-06-01

    Hydraulic conductivity and its anisotropy are fundamental aquifer properties for groundwater flow and transport modeling. Current in-well or direct-push field measurement techniques allow for relatively quick determination of general conductivity profiles with depth. However, capabilities for identifying local scale conductivities in the horizontal and vertical directions are very limited. Here, we develop the theoretical basis for estimating horizontal and vertical conductivities from different types of steady-state single-well/probe injection tests under saturated conditions and in the absence of a well skin. We explore existing solutions and a recent semi-analytical solution approach to the flow problem under the assumption that the aquifer is locally homogeneous. The methods are based on the collection of an additional piece of information in the form of a second injection (or recirculation) test at a same location, or in the form of an additional head or flow observation along the well/probe. Results are represented in dimensionless charts for partial validation against approximate solutions and for practical application to test interpretation. The charts further allow for optimization of a test configuration to maximize sensitivity to anisotropy ratio. The two methods most sensitive to anisotropy are found to be (1) subsequent injection from a lateral screen and from the bottom of an otherwise cased borehole, and (2) single injection from a lateral screen with an additional head observation along the casing. Results may also be relevant for attributing consistent divergences in conductivity measurements from different testing methods applied at a same site or location to the potential effects of anisotropy. Some practical aspects are discussed and references are made to existing methods, which appear easily compatible with the proposed procedures.

  13. 10 CFR Appendix T to Subpart B of... - Uniform Test Method for Measuring the Water Consumption of Water Closets and Urinals

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    .../ANSI Standard A112.19.6-1995 (see § 430.22). Measurements shall be recorded at the resolution of the..., Test Apparatus and General Requirements, subsections 8.2.1, 8.2.2, and 8.2.3 of the ASME/ANSI Standard... section 7.1.6, Water Consumption and Hydraulic Characteristics, of the ASME/ANSI Standard A112.19.6-1995...

  14. Radioactive waste isolation in salt: Peer review of the Office of Nuclear Waste Isolation's draft report on a multifactor test design to investigate uniform corrosion of low-carbon steel

    SciTech Connect

    Paddock, R.A.; Lerman, A.; Ditmars, J.D.; Macdonald, D.D.; Peerenboom, J.P.; Was, G.S.; Harrison, W.

    1987-01-01

    This report documents Argonne National Laboratory's review of an internal technical memorandum prepared by Battelle Memorial Institute's Office of Nuclear Waste Isolation (ONWI) entitled Multifactor Test Design to Investigate Uniform Corrosion of Low-Carbon Steel in a Nuclear Waste Salt Repository Environment. The several major areas of concern identified by peer review panelists are important to the credibility of the test design proposed in the memorandum and are to adequately addressed there. These areas of concern, along with specific recommendations to improve their treatment, are discussed in detail in Sec. 2 of this report. The twenty recommendations, which were abstracted from those discussions, are presented essentially in the order in which they are introduced in Sec. 2.

  15. Quantification of perceived macro-uniformity

    NASA Astrophysics Data System (ADS)

    Lee, Ki-Youn; Bang, Yousun; Choh, Heui-Keun

    2011-01-01

    Macro-uniformity refers to the subjective impression of overall uniformity in the print sample. By the efforts of INCITS W1.1 team, macro-uniformity is categorized into five types of attributes: banding, streaks, mottle, gradients, and moiré patterns, and the ruler samples are generated with perceptual scales. W1.1 macro-uniformity ruler is useful for judging the levels of print defect, but it is not an easy task to reproduce the samples having the same perceptual scales at different times in different places. An objective quantification method is more helpful and convenient for developers to analyze print quality and design printing system components. In this paper, we propose a method for measuring perceived macro-uniformity for a given print using a flat-bed scanner. First, banding, 2D noise, and gradients are separately measured, and they are converted to the perceptual scales based on subjective results of each attribute. The correlation coefficients between the measured values of the attributes and the perceptual scales are 0.92, 0.97, and 0.86, respectively. Another subjective test is performed to find the relationship between the overall macro-uniformity and the three attributes. The weighting factors are obtained by the experimental result, and the final macro-uniformity grade is determined by the weighted sums of each attribute.

  16. Do Generous Welfare States Generate Efficiency Gains Which Counterbalance Short Run Losses? Testing Downside Risk Theory with Economic Panel Data for the U.S., Germany and the Netherlands

    ERIC Educational Resources Information Center

    Headey, Bruce; Muffels, Ruud

    2008-01-01

    The purpose of the paper is to assess the theory that the downside risk insurance provided by more generous welfare states generates long run efficiency gains, which counterbalance the short run efficiency losses caused by work disincentives in these states (Feldstein 1974, 1976; Sinn 1995, 1996). Testing downside risk theory requires long term…

  17. Do Generous Welfare States Generate Efficiency Gains Which Counterbalance Short Run Losses? Testing Downside Risk Theory with Economic Panel Data for the U.S., Germany and the Netherlands

    ERIC Educational Resources Information Center

    Headey, Bruce; Muffels, Ruud

    2008-01-01

    The purpose of the paper is to assess the theory that the downside risk insurance provided by more generous welfare states generates long run efficiency gains, which counterbalance the short run efficiency losses caused by work disincentives in these states (Feldstein 1974, 1976; Sinn 1995, 1996). Testing downside risk theory requires long term…

  18. Adaptive allocation of attentional gain.

    PubMed

    Scolari, Miranda; Serences, John T

    2009-09-23

    Humans are adept at distinguishing between stimuli that are very similar, an ability that is particularly crucial when the outcome is of serious consequence (e.g., for a surgeon or air-traffic controller). Traditionally, selective attention was thought to facilitate perception by increasing the gain of sensory neurons tuned to the defining features of a behaviorally relevant object (e.g., color, orientation, etc.). In contrast, recent mathematical models counterintuitively suggest that, in many cases, attentional gain should be applied to neurons that are tuned away from relevant features, especially when discriminating highly similar stimuli. Here we used psychophysical methods to critically evaluate these "ideal observer" models. The data demonstrate that attention enhances the gain of the most informative sensory neurons, even when these neurons are tuned away from the behaviorally relevant target feature. Moreover, the degree to which an individual adopted optimal attentional gain settings by the end of testing predicted success rates on a difficult visual discrimination task, as well as the amount of task improvement that occurred across repeated testing sessions (learning). Contrary to most traditional accounts, these observations suggest that the primary function of attentional gain is not to enhance the representation of target features per se, but instead to optimize performance on the current perceptual task. Additionally, individual differences in gain suggest that the operating characteristics of low-level attentional phenomena are not stable trait-like attributes and that variability in how attention is deployed may play an important role in determining perceptual abilities.

  19. NASA Uniform Files Index

    NASA Technical Reports Server (NTRS)

    1987-01-01

    This handbook is a guide for the use of all personnel engaged in handling NASA files. It is issued in accordance with the regulations of the National Archives and Records Administration, in the Code of Federal Regulations Title 36, Part 1224, Files Management; and the Federal Information Resources Management Regulation, Subpart 201-45.108, Files Management. It is intended to provide a standardized classification and filing scheme to achieve maximum uniformity and ease in maintaining and using agency records. It is a framework for consistent organization of information in an arrangement that will be useful to current and future researchers. The NASA Uniform Files Index coding structure is composed of the subject classification table used for NASA management directives and the subject groups in the NASA scientific and technical information system. It is designed to correlate files throughout NASA and it is anticipated that it may be useful with automated filing systems. It is expected that in the conversion of current files to this arrangement it will be necessary to add tertiary subjects and make further subdivisions under the existing categories. Established primary and secondary subject categories may not be changed arbitrarily. Proposals for additional subject categories of NASA-wide applicability, and suggestions for improvement in this handbook, should be addressed to the Records Program Manager at the pertinent installation who will forward it to the NASA Records Management Office, Code NTR, for approval. This handbook is issued in loose-leaf form and will be revised by page changes.

  20. Should School Nurses Wear Uniforms?

    ERIC Educational Resources Information Center

    Journal of School Health, 2001

    2001-01-01

    This 1958 paper questions whether school nurses should wear uniforms (specifically, white uniforms). It concludes that white uniforms are often associated with the treatment of ill people, and since many people have a fear reaction to them, they are not necessary and are even undesirable. Since school nurses are school staff members, they should…

  1. Precision Gains from Publically Available School Proficiency Measures Compared to Study-Collected Test Scores in Education Cluster-Randomized Trials. NCEE 2010-4003

    ERIC Educational Resources Information Center

    Deke, John; Dragoset, Lisa; Moore, Ravaris

    2010-01-01

    In randomized controlled trials (RCTs) where the outcome is a student-level, study-collected test score, a particularly valuable piece of information is a study-collected baseline score from the same or similar test (a pre-test). Pre-test scores can be used to increase the precision of impact estimates, conduct subgroup analysis, and reduce bias…

  2. Uniform quantized electron gas

    NASA Astrophysics Data System (ADS)

    Høye, Johan S.; Lomba, Enrique

    2016-10-01

    In this work we study the correlation energy of the quantized electron gas of uniform density at temperature T  =  0. To do so we utilize methods from classical statistical mechanics. The basis for this is the Feynman path integral for the partition function of quantized systems. With this representation the quantum mechanical problem can be interpreted as, and is equivalent to, a classical polymer problem in four dimensions where the fourth dimension is imaginary time. Thus methods, results, and properties obtained in the statistical mechanics of classical fluids can be utilized. From this viewpoint we recover the well known RPA (random phase approximation). Then to improve it we modify the RPA by requiring the corresponding correlation function to be such that electrons with equal spins can not be on the same position. Numerical evaluations are compared with well known results of a standard parameterization of Monte Carlo correlation energies.

  3. The Uniform Rugosity Effect

    NASA Astrophysics Data System (ADS)

    Bonnivard, Matthieu; Bucur, Dorin

    2012-06-01

    Relying on the effect of microscopic asperities, one can mathematically justify that viscous fluids adhere completely on the boundary of an impermeable domain. The rugosity effect accounts asymptotically for the transformation of complete slip boundary conditions on a rough surface in total adherence boundary conditions, as the amplitude of the rugosities vanishes. The decreasing rate (average velocity divided by the amplitude of the rugosities) computed on close flat layers is definitely influenced by the geometry. Recent results prove that this ratio has a uniform upper bound for certain geometries, like periodical and "almost Lipschitz" boundaries. The purpose of this paper is to prove that such a result holds for arbitrary (non-periodical) crystalline boundaries and general (non-smooth) periodical boundaries.

  4. Gain weighted eigenspace assignment

    NASA Technical Reports Server (NTRS)

    Davidson, John B.; Andrisani, Dominick, II

    1994-01-01

    This report presents the development of the gain weighted eigenspace assignment methodology. This provides a designer with a systematic methodology for trading off eigenvector placement versus gain magnitudes, while still maintaining desired closed-loop eigenvalue locations. This is accomplished by forming a cost function composed of a scalar measure of error between desired and achievable eigenvectors and a scalar measure of gain magnitude, determining analytical expressions for the gradients, and solving for the optimal solution by numerical iteration. For this development the scalar measure of gain magnitude is chosen to be a weighted sum of the squares of all the individual elements of the feedback gain matrix. An example is presented to demonstrate the method. In this example, solutions yielding achievable eigenvectors close to the desired eigenvectors are obtained with significant reductions in gain magnitude compared to a solution obtained using a previously developed eigenspace (eigenstructure) assignment method.

  5. Exploring how nursing uniforms influence self image and professional identity.

    PubMed

    Shaw, Kate; Timmons, Stephen

    Uniforms are thought to hold personal significance for those who wear them and act as powerful symbols representing the profession's identity and image. To gain an insight into the influence of uniform on self image and professional identity among student nurses. Fourteen qualitative, semi structured interviews were carried out with pre registration nurses on diploma and degree programmes at a university in England. Uniform raised issues in a number of areas including gender, equality, power and identity. Pride, combined with a strong self image and professional identity, lead to enhanced confidence and, therefore, better performance in clinical practice. Since this study shows the importance of uniform to students, uniforms need to balance a professional and modern image while retaining an appreciation for nursing's heritage. This will project a realistic image to the public and help nurses to form a positive professional identity.

  6. Evaluating uniformity of IR reference sources

    NASA Astrophysics Data System (ADS)

    Barrat, Catherine; Violleau, Sébastien

    2015-10-01

    Infrared reference sources such as blackbodies are used to calibrate and test IR sensors and cameras.. Applications requiring a high thermal uniformity over the emissive surface become more and more frequent compared to the past applications. Among these applications are non uniformity correction of infrared cameras focused at short distance and simultaneous calibration of a set of sensor facing a large area blackbody. Facing these demanding applications requires to accurately measuring thee thermal radiation of each point of the emissive surface of the reference source. The use of an infrared camera for this purpose turns out to be absolutely inefficient since the uniformity off response of this camera is usually worse than the uniformity of thee source to bee measured. Consequently, HGH has developed a testing bench for accurate measurement of uniformity of infrared sources based on a low noise radiometer mounted of translating stages and using an exclusive drift correction method. This bench delivers a reliable thermal map of any kind of infrared reference source.

  7. Correcting the Normalized Gain for Guessing

    ERIC Educational Resources Information Center

    Stewart, John; Stewart, Gay

    2010-01-01

    The normalized gain, "g", has been an important tool for the characterization of conceptual improvement in physics courses since its use in Hake's extensive study on conceptual learning in introductory physics. The normalized gain is calculated from the score on a pre-test administered before instruction and a post-test administered…

  8. Correcting the Normalized Gain for Guessing

    ERIC Educational Resources Information Center

    Stewart, John; Stewart, Gay

    2010-01-01

    The normalized gain, "g", has been an important tool for the characterization of conceptual improvement in physics courses since its use in Hake's extensive study on conceptual learning in introductory physics. The normalized gain is calculated from the score on a pre-test administered before instruction and a post-test administered…

  9. Use of a photonic crystal for optical amplifier gain control

    DOEpatents

    Lin, Shawn-Yu; Fleming, James G.; El-Kady, Ihab

    2006-07-18

    An optical amplifier having a uniform gain profile uses a photonic crystal to tune the density-of-states of a gain medium so as to modify the light emission rate between atomic states. The density-of-states of the gain medium is tuned by selecting the size, shape, dielectric constant, and spacing of a plurality of microcavity defects in the photonic crystal. The optical amplifier is particularly useful for the regeneration of DWDM signals in long optical fibers.

  10. Spatial uniformity measurement of SAW convolvers

    NASA Astrophysics Data System (ADS)

    Selviah, D. R.; Warne, D. H.; Morgan, D. P.

    1982-09-01

    For correlation of coded waveforms, the nonlinear interactive process in a SAW convolver should ideally give an amplitude and phase independent of position. A new experimental method of measuring this spatial uniformity used CW test waveforms and gave a resolution of 25 ns - a considerably higher resolution than previously attained.

  11. Optical antenna gain. II - Receiving antennas

    NASA Technical Reports Server (NTRS)

    Degnan, J. J.; Klein, B. J.

    1974-01-01

    Expressions are developed for the gain of a centrally obscured, circular optical antenna used as the collecting and focusing optics in a laser receiver, involving losses due to (1) incoming light blockage by central obscuration, (2) energy spillover at the detector, and (3) the effect of local oscillator distribution in the case of heterodyne or homodyne detection. Numerical results are presented for direct detection and for three types of local oscillator distribution (uniform, Gaussian, and matched).

  12. Invention and Gain Analysis.

    ERIC Educational Resources Information Center

    Weber, Robert J.; Dixon, Stacey

    1989-01-01

    Gain analysis is applied to the invention of the sewing needle as well as different sewing implements and modes of sewing. The analysis includes a two-subject experiment. To validate the generality of gain heuristics and underlying switching processes, the invention of the assembly line is also analyzed. (TJH)

  13. Invention and Gain Analysis.

    ERIC Educational Resources Information Center

    Weber, Robert J.; Dixon, Stacey

    1989-01-01

    Gain analysis is applied to the invention of the sewing needle as well as different sewing implements and modes of sewing. The analysis includes a two-subject experiment. To validate the generality of gain heuristics and underlying switching processes, the invention of the assembly line is also analyzed. (TJH)

  14. Weight gain - unintentional

    MedlinePlus

    ... trying to do so can have many causes. Metabolism slows down as you age . This can cause weight gain if you eat too much, eat the wrong foods, or do not get enough exercise. Drugs that can cause weight gain include: Birth ...

  15. Measuring Gains in Critical Thinking in Food Science and Human Nutrition Courses: The Cornell Critical Thinking Test, Problem-Based Learning Activities, and Student Journal Entries

    ERIC Educational Resources Information Center

    Iwaoka, Wayne T.; Li, Yong; Rhee, Walter Y.

    2010-01-01

    The Cornell Critical Thinking Test (CCTT) is one of the many multiple-choice tests with validated questions that have been reported to measure general critical thinking (CT) ability. One of the IFT Education Standards for undergraduate degrees in Food Science is the emphasis on the development of critical thinking. While this skill is easy to list…

  16. Measuring Gains in Critical Thinking in Food Science and Human Nutrition Courses: The Cornell Critical Thinking Test, Problem-Based Learning Activities, and Student Journal Entries

    ERIC Educational Resources Information Center

    Iwaoka, Wayne T.; Li, Yong; Rhee, Walter Y.

    2010-01-01

    The Cornell Critical Thinking Test (CCTT) is one of the many multiple-choice tests with validated questions that have been reported to measure general critical thinking (CT) ability. One of the IFT Education Standards for undergraduate degrees in Food Science is the emphasis on the development of critical thinking. While this skill is easy to list…

  17. Commutated automatic gain control system

    NASA Technical Reports Server (NTRS)

    Yost, S. R.

    1981-01-01

    A commutated automatic gain control system (AGC) was designed and constructed for the prototype Loran C receiver. The AGC is designed to improve the signal-to-signal ratio of the received Loran signals. The AGC design does not require any analog to digital conversion and it utilizes commonly available components. The AGC consists of: (1) a circuit which samples the peak of the envelope of the Loran signal to obtain an AGC voltage for each of three Loran stations, (2) a dc gain circuit to control the overall gain of the AGC system, and (3) an AGC amplification of the input RF signal. The performance of the AGC system was observed in bench and flight tests; it has improved the overall accuracy of the receiver. Improvements in the accuracy of the time difference calculations to within approx. + or - 1.5 microseconds of the observed time differnces for a given position are reported.

  18. Acting to gain information

    NASA Technical Reports Server (NTRS)

    Rosenchein, Stanley J.; Burns, J. Brian; Chapman, David; Kaelbling, Leslie P.; Kahn, Philip; Nishihara, H. Keith; Turk, Matthew

    1993-01-01

    This report is concerned with agents that act to gain information. In previous work, we developed agent models combining qualitative modeling with real-time control. That work, however, focused primarily on actions that affect physical states of the environment. The current study extends that work by explicitly considering problems of active information-gathering and by exploring specialized aspects of information-gathering in computational perception, learning, and language. In our theoretical investigations, we analyzed agents into their perceptual and action components and identified these with elements of a state-machine model of control. The mathematical properties of each was developed in isolation and interactions were then studied. We considered the complexity dimension and the uncertainty dimension and related these to intelligent-agent design issues. We also explored active information gathering in visual processing. Working within the active vision paradigm, we developed a concept of 'minimal meaningful measurements' suitable for demand-driven vision. We then developed and tested an architecture for ongoing recognition and interpretation of visual information. In the area of information gathering through learning, we explored techniques for coping with combinatorial complexity. We also explored information gathering through explicit linguistic action by considering the nature of conversational rules, coordination, and situated communication behavior.

  19. Indoor acoustic gain design

    NASA Astrophysics Data System (ADS)

    Concha-Abarca, Justo Andres

    2002-11-01

    The design of sound reinforcement systems includes many variables and usually some of these variables are discussed. There are criteria to optimize the performance of the sound reinforcement systems under indoor conditions. The equivalent acoustic distance, the necessary acoustic gain, and the potential acoustic gain are parameters which must be adjusted with respect to the loudspeaker array, electric power and directionality of loudspeakers, the room acoustics conditions, the distance and distribution of the audience, and the type of the original sources. The design and installation of front of the house and monitoring systems have individual criteria. This article is about this criteria and it proposes general considerations for the indoor acoustic gain design.

  20. Uniform Roughness Studies

    DTIC Science & Technology

    1992-05-01

    heating pads were placed between a sheet of 2.54-cm (1-in) thick polyisocyanurate insulation, and the test plate. Power was supplied to the heating pads...and a digital data acquisition system. The data acquisition system consisted of a Metrabyte DASH 16 A/D board installed in an IBM AT PC. A custom data

  1. School Uniforms: Esprit de Corps.

    ERIC Educational Resources Information Center

    Ryan, Rosemary P.; Ryan, Thomas E.

    1998-01-01

    The benefits of school uniforms far outweigh their short-term costs. School uniforms not only keep students safe, but they increase their self-esteem, promote a more positive attitude toward school, lead to improved student behavior, and help blur social-class distinctions. Students are allowed to wear their own political or religious messages,…

  2. Preventing Weight Gain

    MedlinePlus

    ... this? Submit Button Our Division About Us Nutrition Physical Activity Overweight & Obesity Healthy Weight Breastfeeding Micronutrient Malnutrition State and Local Programs Preventing Weight Gain Language: English (US) Español ( ...

  3. Antidepressants and Weight Gain

    MedlinePlus

    Diseases and Conditions Depression (major depressive disorder) Can antidepressants cause weight gain? Answers from Daniel K. Hall- ... is a possible side effect of nearly all antidepressants. However, each person responds to antidepressants differently. Some ...

  4. Research of improved sparse grid non-uniformity correction technologies for infrared resistor array

    NASA Astrophysics Data System (ADS)

    Du, Hui-jie; Zhao, Hong-ming; Gao, Yang; Yu, Hong; Zhang, Yi

    2015-10-01

    Infrared resistor arrays perform a vital role in the hardware in the loop testing of infrared seekers. Infrared resistor arrays composed of large numbers of suspended resistor elements are commonly used to produce dynamic two-dimensional images of infrared radiation. Due to inconsistencies in the fabrication process of the resistor arrays, the temperature each resistor elements reaches for a given input voltage is variable and this leads to more significant radiance differences, these differences result in spatially-distributed radiance non-uniformity. Therefore, in order to obtain an available infrared image, non-uniformity correction (NUC) is necessary. In this paper, the non-uniformity characters of the infrared resistor arrays are analyzed base on measured data and then an improved sparse grid method for engineering are discussed and analyzed. First of all, the NUC camera has a strong influence on the effectiveness of the infrared resistor arrays NUC procedure. According to the actual fact and the laboratory condition, we presented an alternative method for collecting resistor arrays intended to reduce the influence causing by the NUC camera. Secondly, based on the measured non-uniformity data, we obtain the response characteristics of the infrared resistor arrays. In each gray level, we take two points or several points correction algorithm to calculate the gain data and the offset data, and then the linear look-up table is established. Finally, through MATLAB we develop the correction software, and we can obtain the driving output conveniently. The result shows that the image quality has a remarkable improvement after non-uniformity correction, the non-uniformity correction flow and algorithm preferably satisfies the requirement of the high confidence infrared imaging simulation.

  5. Metamaterials with Gain

    NASA Astrophysics Data System (ADS)

    Hess, Ortwin

    2012-02-01

    Nanoplasmonic metamaterials are the key to an extreme control of light and allow us to conceive materials with negative or vanishing refractive index. Indeed, metamaterials enable a multitude of exciting and useful applications, such as subwavelength focusing, invisibility cloaking, and ``trapped rainbow'' stopping of light. The realization of these materials has recently advanced from the microwave to the optical regime. However, at optical wavelengths, metamaterials may suffer from high dissipative losses owing to the metallic nature of their constituent nanoplasmonic meta-molecules. It is therefore not surprising that overcoming loss restrictions by gain is currently one of the most important topics in metamaterials' research. At the same time, providing gain on the nanoplasmonic (metamolecular) level opens up exciting new possibilities such as a whole new type of metamaterial nano-laser with a cavity length of about a tenth of the wavelength. The talk gives an overview of the state of the art of gain-enhanced metamaterials. Particular focus will be placed on nano-plasmonic metamaterials (such as double-fishnet metamaterials) with integrated laser dyes as gain medium. The successful compensation of loss by gain is demonstrated on the meta-molecular level. On the basis of a comprehensive, microscopic Maxwell-Bloch Langevin approach of spatio-temporal light amplification and lasing in gain-enhanced nanoplasmonic (negative-index) metamaterials a methodology based on the discrete Poynting's theorem is introduced that allows dynamic tracing of the flow of electromagnetic energy into and out of ``microscopic'' channels (light field, plasmons, gain medium). It is shown that steady-state amplification can be achieved in nanoplasmonic metamaterials. Finally, a complex spatio-temporal interplay of light-field and coherent absorption dynamics is revealed in the lasing dynamics of a nanoplasmonic gain-enhanced double-fishnet metamaterial.

  6. VECSEL gain characterization.

    PubMed

    Mangold, Mario; Wittwer, Valentin J; Sieber, Oliver D; Hoffmann, Martin; Krestnikov, Igor L; Livshits, Daniil A; Golling, Matthias; Südmeyer, Thomas; Keller, Ursula

    2012-02-13

    We present the first full gain characterization of two vertical external cavity surface emitting laser (VECSEL) gain chips with similar designs operating in the 960-nm wavelength regime. We optically pump the structures with continuous-wave (cw) 808-nm radiation and measure the nonlinear reflectivity for 130-fs and 1.4-ps probe pulses as function of probe pulse fluence, pump power, and heat sink temperature. With this technique we are able to measure the saturation behavior for VECSEL gain chips for the first time. The characterization with 1.4-ps pulses resulted in saturation fluences of 40-80 μJ/cm2, while probing with 130-fs pulses yields reduced saturation fluences of 30-50 μJ/cm2 for both structures. For both pulse durations this is lower than previously assumed. A small-signal gain of up to 5% is obtained with this technique. Furthermore, in a second measurement setup, we characterize the spectral dependence of the gain using a tunable cw probe beam. We measure a gain bandwidth of over 26 nm for both structures, full width at half maximum.

  7. Comparison of the effects explained by variations in the bovine PLAG1 and NCAPG genes on daily body weight gain, linear skeletal measurements and carcass traits in Japanese Black steers from a progeny testing program.

    PubMed

    Hoshiba, Hiroshi; Setoguchi, Kouji; Watanabe, Toshio; Kinoshita, Akihiro; Mizoshita, Kazunori; Sugimoto, Yoshikazu; Takasuga, Akiko

    2013-07-01

    The c.1326T>G single nucleotide polymorphism (SNP) in the NCAPG gene, which leads to an amino acid change of Ile442 to Met442, was previously identified as a candidate causative variation for a bovine carcass weight quantitative trait loci (QTL) on chromosome 6, which was associated with linear skeletal measurement gains and daily body weight gain at puberty. Recently, we identified the stature quantitative trait nucleotides (QTNs) in the PLAG1-CHCHD7 intergenic region as the causative variations for another carcass weight QTL on chromosome 14. This study aimed to compare the effects of the two QTL on growth and carcass traits using 768 Japanese Black steers from a progeny testing program and to determine whether a genetic interaction was present between them. The FJX_250879 SNP representing the stature QTL was associated with linear skeletal measurements and average daily body weight gain at early and late periods during adolescence. A genetic interaction between FJX_250879 and NCAPG c.1326T>G was detected only for body and rump lengths. Both were associated with increased carcass weight and Longissimus muscle area, and NCAPG c.1326T>G was also associated with reduced subcutaneous fat thickness and increased carcass yield estimate. These results will provide useful information to improve carcass weight in Japanese Black cattle.

  8. Experience gained from the development and results from tests of the equipment of the Kalinin NPP Unit 4 regeneration and intermediate steam separation and reheating system

    NASA Astrophysics Data System (ADS)

    Trifonov, N. N.; Sukhorukov, Yu. G.; Ermolov, V. F.; Svyatkin, F. A.; Nikolaenkova, E. K.; Sintsova, T. G.; Grigor'eva, E. B.; Esin, S. B.; Ukhanova, M. G.; Golubev, E. A.; Bik, S. P.; Tren'kin, V. B.

    2014-06-01

    The equipment of the Kalinin NPP Unit 4 regeneration, intermediate separation, and steam reheating (ISSR) systems is described and the results of their static and dynamic tests are presented. It was shown from an analysis of test results that the equipment of the regeneration and ISSR systems produce the design thermal and hydraulic characteristics in static and dynamic modes of its operation. Specialists of the Central boiler-Turbine Institute Research and Production Association have developed procedures and computer programs for calculating the system of direct-contact horizontal low-pressure heaters (connected according to the gravity circuit arrangement jointly with the second-stage electrically-driven condensate pumps) and the ISSR system, the results of which are in satisfactory agreement with experimental data. The drawbacks of the layout solutions due to which cavitation failure of the pumps may occur are considered. Technical solutions aimed at securing stable operation of the equipment of regeneration and ISSR systems are proposed. The process arrangement for heating the chamber-type high-pressure heaters adopted at the Kalinin NPP is analyzed. The version of this circuit developed at the Central Boiler-Turbine Institute Research and Production Association that allows the heating rate equal to 1°C/min to be obtained is proposed.

  9. Uniform acceleration in general relativity

    NASA Astrophysics Data System (ADS)

    Friedman, Yaakov; Scarr, Tzvi

    2015-10-01

    We extend de la Fuente and Romero's (Gen Relativ Gravit 47:33, 2015) defining equation for uniform acceleration in a general curved spacetime from linear acceleration to the full Lorentz covariant uniform acceleration. In a flat spacetime background, we have explicit solutions. We use generalized Fermi-Walker transport to parallel transport the Frenet basis along the trajectory. In flat spacetime, we obtain velocity and acceleration transformations from a uniformly accelerated system to an inertial system. We obtain the time dilation between accelerated clocks. We apply our acceleration transformations to the motion of a charged particle in a constant electromagnetic field and recover the Lorentz-Abraham-Dirac equation.

  10. Content uniformity and assay requirements in current regulations.

    PubMed

    Bánfai, Balázs; Ganzler, Katalin; Kemény, Sándor

    2007-07-13

    The acceptance of a tablet batch is based both on the content uniformity test and on the assay. It is shown that these two characteristics are not independent, and the acceptance criteria for them are not even consistent. For content uniformity range three methods of calculation are compared: the present European Pharmacopoeia method, a tolerance range method with improved k tolerance factor and a one-way random effects analysis of variance model. To resolve the inconsistency several options are discussed: applying the holistic content uniformity range alone; using content uniformity standard deviation and assay mean simultaneously or applying a criterion based on Taguchi's quadratic loss function.

  11. Instrumentation For Detector Spectral / Spatial Uniformity Measurements

    NASA Astrophysics Data System (ADS)

    Craft, Ronald W.; Bronson, Robert M.

    1989-09-01

    The information presented in this report describes an instrument which is used for precision measurements of detector spectral response and spatial response. Emphasis will be placed on detector spatial uniformity measurements. To allow spatial uniformity testing at selected wavelengths, an instrument was designed by applying existing spectral response instrumentation technology with the addition of special exit optics, a dual axis motorized positioning table, and supporting software. Supporting components consisted of a computer controlled radiometer and a monochromator with a high intensity light source attached. Spectral response is determined by measuring the wavelength response photosensitivity of a stationary specimen to the irradiance of a calibrated monochromatic light source over the wavelength range of interest at evenly spaced intervals. Data is presented in a pictorial format by graphing the RESPONSE versus the WAVELENGTH. Detector spatial response is determined by measuring the variation in photosensitivity over the surface of the test detector by moving the detector in an X,Y grid at evenly spaced intervals under a small monochromatic spot of light. Several versions of the instrument were built and test results are provided which represent data from the spatial uniformity testing of Ge, PbS, and PbSe detectors. Data acquired is presented as a 3-Dimensional surface map by plotting the RESPONSE versus the X POSITION versus the Y POSITION.

  12. Error margin for antenna gain measurements

    NASA Technical Reports Server (NTRS)

    Cable, V.

    2002-01-01

    The specification of measured antenna gain is incomplete without knowing the error of the measurement. Also, unless gain is measured many times for a single antenna or over many identical antennas, the uncertainty or error in a single measurement is only an estimate. In this paper, we will examine in detail a typical error budget for common antenna gain measurements. We will also compute the gain uncertainty for a specific UHF horn test that was recently performed on the Jet Propulsion Laboratory (JPL) antenna range. The paper concludes with comments on these results and how they compare with the 'unofficial' JPL range standard of +/- ?.

  13. The Uniformly Accelerated Reference Frame

    ERIC Educational Resources Information Center

    Hamilton, J. Dwayne

    1978-01-01

    The observations that would be made by a uniformly accelerated observer, including the observer's event horizon, the variation of clock rates with position, and the effects of following a freely falling object are considered in detail. (SL)

  14. Toward Uniformity in Exchange Communication

    ERIC Educational Resources Information Center

    Shinn, Isabella

    1972-01-01

    Instant communication, characterized by brevity, should be the practice of exchange librarians trading titles on the international level. Guidelines for a multilingual, many-purpose form letter, which could achieve uniformity, are presented. (14 references) (Author/SJ)

  15. Should I Gain Weight?

    MedlinePlus

    ... If you're having trouble with your body image, talk about how you feel with someone you like and trust who's been through it — maybe a parent, doctor, counselor, coach, or teacher. continue It's the Growth, Not the Gain No ...

  16. Geotech Smart24 data acquisition system input terminated noise seismic response adjusted test : StreckeisenSTS2-low and high gain, Guralp CMG3T and Geotech GS13 seismometers.

    SciTech Connect

    Rembold, Randy Kai; Hart, Darren M.; Harris, James Mark

    2008-08-01

    Sandia National Laboratories has tested, evaluated and reported on the Geotech Smart24 data acquisition system with active Fortezza crypto card data signing and authentication in SAND2008-. One test, Input Terminated Noise, allows us to characterize the self-noise of the Smart24 system. By computing the power spectral density (PSD) of the input terminated noise time series data set and correcting for the instrument response of different seismometers, the resulting spectrum can be compared to the USGS new low noise model (NLNM) of Peterson (1996), and determine the ability of the matched system of seismometer and Smart24 to be quiet enough for any general deployment location. Four seismometer models were evaluated: the Streckeisen STS2-Low and High Gain, Guralp CMG3T and Geotech GS13 models. Each has a unique pass-band as defined by the frequency band of the instrument corrected noise spectrum that falls below the new low-noise model.

  17. Optical antenna gain. 2: receiving antennas.

    PubMed

    Degnan, J J; Klein, B J

    1974-10-01

    Expressions are derived for the gain of a centrally obscured, circular optical antenna when used as the collecting and focusing optics in a laser receiver which include losses due to (1) blockage of the incoming light by the central obscuration, (2) the spillover of energy at the detector, and (3) the effect of local oscillator distribution in the case of heterodyne or homodyne detection. Numerical results are presented for direct detection and for three types of local oscillator distributions (uniform, Gaussian, and matched) in the case of heterodyne or homodyne detection. The results are presented in several graphs that allow the rapid evaluation of receiver gain for an arbitrary set of telescope and detector parameters. It is found that, for uniform illumination by the LO, the optimum SNR is obtained when the detector radius is approximately 0.74 times the Airy disk radius. The use of an optimized Gaussian (spot size = 0.46 times the Airy disk radius) improves the receiver gain by less than 1 dB. Theuse results are insensitive to the size of the central obscuration.

  18. Gain Coupling VECSELs (POSTPRINT)

    DTIC Science & Technology

    2013-01-01

    AFRL-RY-WP-TP-2013-0028 GAIN COUPLING VECSELs (POSTPRINT) Robert Bedford Optoelectronic Technology Branch Aerospace Components...COUPLING VECSELs (POSTPRINT) 5a. CONTRACT NUMBER In-house 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 62204F 6. AUTHOR(S) Robert Bedford...Clearance Date 28 December 2012. Report contains color. 14. ABSTRACT Vertical external cavity surface emitting lasers ( VECSELs ) provide a flexible

  19. Tuning of gravity-dependent and gravity-independent vertical angular VOR gain changes by frequency of adaptation.

    PubMed

    Yakushin, Sergei B

    2012-06-01

    The gain of the vertical angular vestibulo-ocular reflex (aVOR) was adaptively increased and decreased in a side-down head orientation for 4 h in two cynomolgus monkeys. Adaptation was performed at 0.25, 1, 2, or 4 Hz. The gravity-dependent and -independent gain changes were determined over a range of head orientations from left-side-down to right-side-down at frequencies from 0.25 to 10 Hz, before and after adaptation. Gain changes vs. frequency data were fit with a Gaussian to determine the frequency at which the peak gain change occurred, as well as the tuning width. The frequency at which the peak gravity-dependent gain change occurred was approximately equal to the frequency of adaptation, and the width increased monotonically with increases in the frequency of adaptation. The gravity-independent component was tuned to the adaptive frequency of 0.25 Hz but was uniformly distributed over all frequencies when the adaptation frequency was 1-4 Hz. The amplitude of the gravity-independent gain changes was larger after the aVOR gain decrease than after the gain increase across all tested frequencies. For the aVOR gain decrease, the phase lagged about 4° for frequencies below the adaptation frequency and led for frequencies above the adaptation frequency. For gain increases, the phase relationship as a function of frequency was inverted. This study demonstrates that the previously described dependence of aVOR gain adaptation on frequency is a property of the gravity-dependent component of the aVOR only. The gravity-independent component of the aVOR had a substantial tuning curve only at an adaptation frequency of 0.25 Hz.

  20. Tuning of gravity-dependent and gravity-independent vertical angular VOR gain changes by frequency of adaptation

    PubMed Central

    2012-01-01

    The gain of the vertical angular vestibulo-ocular reflex (aVOR) was adaptively increased and decreased in a side-down head orientation for 4 h in two cynomolgus monkeys. Adaptation was performed at 0.25, 1, 2, or 4 Hz. The gravity-dependent and -independent gain changes were determined over a range of head orientations from left-side-down to right-side-down at frequencies from 0.25 to 10 Hz, before and after adaptation. Gain changes vs. frequency data were fit with a Gaussian to determine the frequency at which the peak gain change occurred, as well as the tuning width. The frequency at which the peak gravity-dependent gain change occurred was approximately equal to the frequency of adaptation, and the width increased monotonically with increases in the frequency of adaptation. The gravity-independent component was tuned to the adaptive frequency of 0.25 Hz but was uniformly distributed over all frequencies when the adaptation frequency was 1–4 Hz. The amplitude of the gravity-independent gain changes was larger after the aVOR gain decrease than after the gain increase across all tested frequencies. For the aVOR gain decrease, the phase lagged about 4° for frequencies below the adaptation frequency and led for frequencies above the adaptation frequency. For gain increases, the phase relationship as a function of frequency was inverted. This study demonstrates that the previously described dependence of aVOR gain adaptation on frequency is a property of the gravity-dependent component of the aVOR only. The gravity-independent component of the aVOR had a substantial tuning curve only at an adaptation frequency of 0.25 Hz. PMID:22402654

  1. Interactions between uniformly magnetized spheres

    NASA Astrophysics Data System (ADS)

    Edwards, Boyd F.; Riffe, D. M.; Ji, Jeong-Young; Booth, William A.

    2017-02-01

    We use simple symmetry arguments suitable for undergraduate students to demonstrate that the magnetic energy, forces, and torques between two uniformly magnetized spheres are identical to those between two point magnetic dipoles. These arguments exploit the equivalence of the field outside of a uniformly magnetized sphere with that of a point magnetic dipole, and pertain to spheres of arbitrary sizes, positions, and magnetizations. The point dipole/sphere equivalence for magnetic interactions may be useful in teaching and research, where dipolar approximations for uniformly magnetized spheres can now be considered to be exact. The work was originally motivated by interest in the interactions between collections of small neodymium magnetic spheres used as desk toys.

  2. Commutated automatic gain control system

    NASA Technical Reports Server (NTRS)

    Yost, S. R.

    1982-01-01

    The commutated automatic gain control (AGC) system was designed and built for the prototype Loran-C receiver is discussed. The current version of the prototype receiver, the Mini L-80, was tested initially in 1980. The receiver uses a super jolt microcomputer to control a memory aided phase loop (MAPLL). The microcomputer also controls the input/output, latitude/longitude conversion, and the recently added AGC system. The AGC control adjusts the level of each station signal, such that the early portion of each envelope rise is about at the same amplitude in the receiver envelope detector.

  3. Commutated automatic gain control system

    NASA Technical Reports Server (NTRS)

    Yost, S. R.

    1982-01-01

    A commutated automatic gain control (AGC) system was designed and built for a prototype Loran C receiver. The receiver uses a microcomputer to control a memory aided phase-locked loop (MAPLL). The microcomputer also controls the input/output, latitude/longitude conversion, and the recently added AGC system. The circuit designed for the AGC is described, and bench and flight test results are presented. The AGC circuit described actually samples starting at a point 40 microseconds after a zero crossing determined by the software lock pulse ultimately generated by a 30 microsecond delay and add network in the receiver front end envelope detector.

  4. Gamma camera intrinsic uniformity in an unstable power supply environment.

    PubMed

    Ejeh, John E; Adedapo, Kayode S; Akinlade, Bidemi I; Osifo, Bola O A

    2011-01-01

    The main objective of this work was to show that a gamma camera in a developing country could perform efficiently despite electricity outages using intrinsic flood uniformity tests as an index of performance. A total of 143 intrinsic uniformity test results for a new gamma camera in use in an environment with unstable power supply are presented. The integral uniformity for the central field of view (CFOV) was found to be between 3.43% and 1.49% (3.29% for acceptance test) while the integral uniformity for the useful field of view (UFOV) was between 4.51% and 1.9% (5.21% for acceptance test). The differential uniformity for the CFOV was between 1.99% and 1.04% (2.25% for acceptance test) while that of the UFOV was between 2.84% and 1.23% (2.63% for acceptance test). In conclusion, these results show that the uniformity of the gamma camera under this condition is within an acceptable range for both planar and SPET imaging.

  5. Effects of Lambertian sources design on uniformity and measurements

    NASA Astrophysics Data System (ADS)

    Cariou, Nadine; Durell, Chris; McKee, Greg; Wilks, Dylan; Glastre, Wilfried

    2014-10-01

    Integrating sphere (IS) based uniform sources are a primary tool for ground based calibration, characterization and testing of flight radiometric equipment. The idea of a Lambertian field of energy is a very useful tool in radiometric testing, but this concept is being checked in many ways by newly lowered uncertainty goals. At an uncertainty goal of 2% one needs to assess carefully uniformity in addition to calibration uncertainties, as even sources with a 0.5% uniformity are now substantial proportions of uncertainty budgets. The paper explores integrating sphere design options for achieving 99.5% and better uniformity of exit port radiance and spectral irradiance created by an integrating sphere. Uniformity in broad spectrum and spectral bands are explored. We discuss mapping techniques and results as a function of observed uniformity as well as laboratory testing results customized to match with customer's instrumentation field of view. We will also discuss recommendations with basic commercial instrumentation, we have used to validate, inspect, and improve correlation of uniformity measurements with the intended application.

  6. GAIN Technology Workshops Summary Report

    SciTech Connect

    Braase, Lori Ann

    2016-08-01

    National and global demand for nuclear energy is increasing and United States (U.S.) global leadership is eroding. There is a sense of urgency with respect to the deployment of the innovative nuclear energy technologies. The Gateway for Accelerated Innovation in Nuclear (GAIN) initiative is based on the simultaneous achievement of three strategic goals. The first is maintaining global technology leadership within the U.S. Department of Energy (DOE). The second is enabling global industrial leadership for nuclear vendors and suppliers. The third is focused on utility optimization of nuclear energy within the clean energy portfolio. An effective public-private partnership is required to achieve these goals. DOEs recognizes the recent sense of urgency new developers and investors have in getting their concepts to market. They know that time to market for nuclear technology takes too long and the facilities needed to conduct the necessary research, development and demonstration (RD&D) activities are very expensive to develop and maintain. Early technologies, in the lower technology readiness levels (TRL) need materials testing, analysis, modeling, code development, etc., most of which currently exists in the DOE national laboratory system. However, mature technologies typically need large component testing and demonstration facilities, which are expensive and long-lead efforts. By understanding the needs of advanced nuclear technology developers, GAIN will connect DOE national laboratory capabilities (e.g., facilities, expertise, materials, and data) with industry RD&D needs. In addition, GAIN is working with the Nuclear Regulatory Commission (NRC) to streamline processes and increase understanding of the licensing requirements for advanced reactors.

  7. Helicopter high gain control

    NASA Technical Reports Server (NTRS)

    Cunningham, T. B.; Nunn, E. C.

    1979-01-01

    High gain control is explored through a design study of the CH-47B helicopter. The plans are designed to obtain the maximum bandwidth possible given the hardware constraints. Controls are designed with modal control theory to specific bandwidths and closed loop mode shapes. Comparisons are made to an earlier complementary filter approach. Bandwidth improvement by removal of limitations is explored in order to establish hardware and mechanization options. Improvements in the pitch axis control system and in the rate gyro sensor noise characteristics in all axes are discussed. The use of rotor state feedback is assessed.

  8. Trying Uniforms on for Size.

    ERIC Educational Resources Information Center

    Paliokas, Kathleen L.; And Others

    1996-01-01

    Public school uniforms are a recent development. Legal trends suggest that the courts are willing to defer to school authorities regarding dress codes--provided a clear link is established between the dress regulations and furtherance of the educational mission. Lists a range of options for a dress-code policy and how each of the available options…

  9. Trying Uniforms on for Size.

    ERIC Educational Resources Information Center

    Paliokas, Kathleen L.; And Others

    1996-01-01

    Public school uniforms are a recent development. Legal trends suggest that the courts are willing to defer to school authorities regarding dress codes--provided a clear link is established between the dress regulations and furtherance of the educational mission. Lists a range of options for a dress-code policy and how each of the available options…

  10. School Uniforms: Guidelines for Principals.

    ERIC Educational Resources Information Center

    Essex, Nathan L.

    2001-01-01

    Principals desiring to develop a school-uniform policy should involve parents, teachers, community leaders, and student representatives; beware restrictions on religious and political expression; provide flexibility and assistance for low-income families; implement a pilot program; align the policy with school-safety issues; and consider legal…

  11. Ribbon Fiber with Multiple Antiguided Phase-Locked Gain Cores

    SciTech Connect

    Beach, R J; Feit, M D; Mitchell, S C; Cutter, K P; Dawson, J W; Payne, S A

    2002-11-20

    We report on the first experimental demonstration of a scalable fiber laser approach based on phase-locking multiple gain cores in an antiguided structure. A novel fabrication technology is used with soft glass components to construct the multiple core fiber used in our experiments. The waveguide region is rectangular in shape and comprised of a periodic sequence of gain and no-gain segments having nearly uniform refractive index. The rectangular waveguide is itself embedded in a lower refractive index cladding region. Experimental results confirm that our five-core Nd doped glass prototype structure runs predominantly in two spatial antiguided modes as predicted by our modeling.

  12. Ribbon fiber with multiple antiguided phase-locked gain cores

    NASA Astrophysics Data System (ADS)

    Beach, Raymond J.; Feit, Michael D.; Mitchell, Scott C.; Cutter, Kurt P.; Dawson, Jay W.; Payne, Stephen A.; Mead, Richard W.; Hayden, Joseph S.; Krashkevich, David; Alunni, David A.

    2003-07-01

    We report on the frist experimental demonstration of a scalable fiber laser approach based on phase-locking multiple gain cores in an antiguided structure. A novel fabrication technology is used with soft glass components to construct the multie core fiber used in our experiments. The waveguide region is rectangular in shape and comprised of a periodic sequence of gain and no-gain segments having nearly uniform refractive index. The rectangular waveguide is itself embedded in a lower refractive index cladding region. Experimental resutls confirm taht our five-core Nd doped glass prototyep structure runs predominately in two spatial antiguided modes as predicted by our modeling.

  13. Impact of maternal knowledge of recommended weight gain in pregnancy on gestational weight gain.

    PubMed

    Shulman, Rachel; Kottke, Melissa

    2016-06-01

    Obesity is prevalent among reproductive-aged women and is associated with increased obstetric complications. Weight gain recommendations exist; however, knowledge of these recommendations is low, and few women gain appropriate weight during their pregnancies. Excessive gestational weight gain is common and is associated with adverse outcomes. Little is known about the relationship between knowledge of gestational weight gain recommendations and actual weight gain. Our objectives were to assess knowledge of weight gain recommendations in pregnancy and to determine its association with actual weight gain among women who seek care at an urban, regional perinatal center. We hypothesize that low levels of knowledge will predict inappropriate weight gain in this population. This is a cross-sectional study with linked chart review of 338 women who sought routine obstetric ultrasound scans at an urban, regional perinatal center that serves a largely low-income population of predominately black women. Descriptive statistics, chi-square test, and analysis of variance were performed. This population has low rates of accurate knowledge of weight gain recommendations in pregnancy (27%) and low rates of appropriate gestational weight gain (30%). Inappropriate gestational weight gain was highest among women who were obese before pregnancy. Accurate knowledge of gestational weight gain recommendations was associated with appropriate weight gain in pregnancy (P = .02), as was prepregnancy weight category (P = .004) and correct identification of prepregnancy weight category (P = .005). These findings support the need for improvements in educational efforts about weight gain in pregnancy for high-risk, low-income women in an urban setting, which may improve compliance with the recommendations. Copyright © 2016 Elsevier Inc. All rights reserved.

  14. 25 CFR 700.103 - Uniform Act.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 2 2011-04-01 2011-04-01 false Uniform Act. 700.103 Section 700.103 Indians THE OFFICE... and Instructions Definitions § 700.103 Uniform Act. The term Uniform Act means the Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970 (84 Stat. 1894; 42 U.S.C. 4601 et seq.; Pub. L...

  15. 25 CFR 700.103 - Uniform Act.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false Uniform Act. 700.103 Section 700.103 Indians THE OFFICE... and Instructions Definitions § 700.103 Uniform Act. The term Uniform Act means the Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970 (84 Stat. 1894; 42 U.S.C. 4601 et seq.; Pub. L...

  16. 25 CFR 700.103 - Uniform Act.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 2 2012-04-01 2012-04-01 false Uniform Act. 700.103 Section 700.103 Indians THE OFFICE... and Instructions Definitions § 700.103 Uniform Act. The term Uniform Act means the Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970 (84 Stat. 1894; 42 U.S.C. 4601 et seq.; Pub. L...

  17. 25 CFR 700.103 - Uniform Act.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 2 2013-04-01 2013-04-01 false Uniform Act. 700.103 Section 700.103 Indians THE OFFICE... and Instructions Definitions § 700.103 Uniform Act. The term Uniform Act means the Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970 (84 Stat. 1894; 42 U.S.C. 4601 et seq.; Pub. L...

  18. Small Arms: Treated Uniforms for Personal Protection

    USDA-ARS?s Scientific Manuscript database

    Permethrin-treatment of field-worn U.S. Military uniforms has been standard practice since 1991. The uniform fabric composition has changed significantly from 100% cotton to 50:50 nylon:cotton Battle Dress Uniforms (BDUs), to 50:50 nylon:cotton Army Combat Uniforms (ACUs) with wrinkle-free finish, a...

  19. 46 CFR 310.11 - Cadet uniforms.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... for State, Territorial or Regional Maritime Academies and Colleges § 310.11 Cadet uniforms. Cadet uniforms shall be supplied at the school in accordance with the uniform regulations of the School. Those... 46 Shipping 8 2011-10-01 2011-10-01 false Cadet uniforms. 310.11 Section 310.11 Shipping...

  20. 46 CFR 310.11 - Cadet uniforms.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... for State, Territorial or Regional Maritime Academies and Colleges § 310.11 Cadet uniforms. Cadet uniforms shall be supplied at the school in accordance with the uniform regulations of the School. Those... 46 Shipping 8 2013-10-01 2013-10-01 false Cadet uniforms. 310.11 Section 310.11 Shipping...

  1. 46 CFR 310.11 - Cadet uniforms.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... for State, Territorial or Regional Maritime Academies and Colleges § 310.11 Cadet uniforms. Cadet uniforms shall be supplied at the school in accordance with the uniform regulations of the School. Those... 46 Shipping 8 2014-10-01 2014-10-01 false Cadet uniforms. 310.11 Section 310.11 Shipping...

  2. 46 CFR 310.11 - Cadet uniforms.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... for State, Territorial or Regional Maritime Academies and Colleges § 310.11 Cadet uniforms. Cadet uniforms shall be supplied at the school in accordance with the uniform regulations of the School. Those... 46 Shipping 8 2012-10-01 2012-10-01 false Cadet uniforms. 310.11 Section 310.11 Shipping...

  3. Integrated application of uniform design and least-squares support vector machines to transfection optimization.

    PubMed

    Pan, Jin-Shui; Hong, Mei-Zhu; Zhou, Qi-Feng; Cai, Jia-Yan; Wang, Hua-Zhen; Luo, Lin-Kai; Yang, De-Qiang; Dong, Jing; Shi, Hua-Xiu; Ren, Jian-Lin

    2009-05-31

    Transfection in mammalian cells based on liposome presents great challenge for biological professionals. To protect themselves from exogenous insults, mammalian cells tend to manifest poor transfection efficiency. In order to gain high efficiency, we have to optimize several conditions of transfection, such as amount of liposome, amount of plasmid, and cell density at transfection. However, this process may be time-consuming and energy-consuming. Fortunately, several mathematical methods, developed in the past decades, may facilitate the resolution of this issue. This study investigates the possibility of optimizing transfection efficiency by using a method referred to as least-squares support vector machine, which requires only a few experiments and maintains fairly high accuracy. A protocol consists of 15 experiments was performed according to the principle of uniform design. In this protocol, amount of liposome, amount of plasmid, and the number of seeded cells 24 h before transfection were set as independent variables and transfection efficiency was set as dependent variable. A model was deduced from independent variables and their respective dependent variable. Another protocol made up by 10 experiments was performed to test the accuracy of the model. The model manifested a high accuracy. Compared to traditional method, the integrated application of uniform design and least-squares support vector machine greatly reduced the number of required experiments. What's more, higher transfection efficiency was achieved. The integrated application of uniform design and least-squares support vector machine is a simple technique for obtaining high transfection efficiency. Using this novel method, the number of required experiments would be greatly cut down while higher efficiency would be gained. Least-squares support vector machine may be applicable to many other problems that need to be optimized.

  4. The Fit for Delivery study: rationale for the recommendations and test-retest reliability of a dietary score measuring adherence to 10 specific recommendations for prevention of excessive weight gain during pregnancy.

    PubMed

    Øverby, Nina C; Hillesund, Elisabet R; Sagedal, Linda R; Vistad, Ingvild; Bere, Elling

    2015-01-01

    Aiming at preventing excessive weight gain during pregnancy, 10 specific dietary recommendations are given to pregnant women in the intervention arm of the Norwegian Fit for Delivery (FFD) study. This paper presents the rationale and test-retest reliability of the food frequency questionnaire (FFQ) and a dietary score measuring adherence to the recommendations. The study is part of the ongoing FFD study, a randomised, controlled, intervention study in nulliparous pregnant women. A 43-item FFQ was developed for the FFD study. A dietary score was constructed from 10 subscales corresponding to the 10 dietary recommendations. Adding the subscales yielded a score from 0 to 10 with increasing score indicating healthier dietary behaviour. The score was divided into tertiles, grouping participants into low, medium and high adherence to the dietary recommendations. Pregnant women attending ultrasound screening at about week 19 of pregnancy were asked to complete the FFQ twice, 2 weeks apart. Of 154 pregnant women completing the first questionnaire, 106 (69%) completed the form on both occasions and was included in the study. The test-retest correlations of the score and subscales were r = 0.68 and r = 0.56-0.84, respectively (both P ≤ 0.001). There was 68% test-retest correct classification of the score and 70-87% of the subscales. In conclusion, acceptable test-retest reliability of the FFQ and the dietary score was found. The score will be used in the FFD study to measure adherence to the dietary recommendations throughout pregnancy and in the following year post-partum. © 2012 Blackwell Publishing Ltd.

  5. Reactor for making uniform capsules

    NASA Technical Reports Server (NTRS)

    Wang, Taylor G. (Inventor); Anikumar, Amrutur V. (Inventor); Lacik, Igor (Inventor)

    1999-01-01

    The present invention provides a novel reactor for making capsules with uniform membrane. The reactor includes a source for providing a continuous flow of a first liquid through the reactor; a source for delivering a steady stream of drops of a second liquid to the entrance of the reactor; a main tube portion having at least one loop, and an exit opening, where the exit opening is at a height substantially equal to the entrance. In addition, a method for using the novel reactor is provided. This method involves providing a continuous stream of a first liquid; introducing uniformly-sized drops of the second liquid into the stream of the first liquid; allowing the drops to react in the stream for a pre-determined period of time; and collecting the capsules.

  6. Method for uniformly bending conduits

    DOEpatents

    Dekanich, S.J.

    1984-04-27

    The present invention is directed to a method for bending metal tubing through various radii while maintaining uniform cross section of the tubing. The present invention is practical by filling the tubing to a sufficient level with water, freezing the water to ice and bending the ice-filled tubing in a cooled die to the desired radius. The use of the ice as a filler material provides uniform cross-sectional bends of the tubing and upon removal of the ice provides an uncontaminated interior of the tubing which will enable it to be used in its intended application without encountering residual contaminants in the tubing due to the presence of the filler material.

  7. Uniform-droplet spray forming

    SciTech Connect

    Blue, C.A.; Sikka, V.K.; Chun, Jung-Hoon; Ando, T.

    1997-04-01

    The uniform-droplet process is a new method of liquid-metal atomization that results in single droplets that can be used to produce mono-size powders or sprayed-on to substrates to produce near-net shapes with tailored microstructure. The mono-sized powder-production capability of the uniform-droplet process also has the potential of permitting engineered powder blends to produce components of controlled porosity. Metal and alloy powders are commercially produced by at least three different methods: gas atomization, water atomization, and rotating disk. All three methods produce powders of a broad range in size with a very small yield of fine powders with single-sized droplets that can be used to produce mono-size powders or sprayed-on substrates to produce near-net shapes with tailored microstructures. The economical analysis has shown the process to have the potential of reducing capital cost by 50% and operating cost by 37.5% when applied to powder making. For the spray-forming process, a 25% savings is expected in both the capital and operating costs. The project is jointly carried out at Massachusetts Institute of Technology (MIT), Tuffs University, and Oak Ridge National Laboratory (ORNL). Preliminary interactions with both finished parts and powder producers have shown a strong interest in the uniform-droplet process. Systematic studies are being conducted to optimize the process parameters, understand the solidification of droplets and spray deposits, and develop a uniform-droplet-system (UDS) apparatus appropriate for processing engineering alloys.

  8. Uniform-Dead-Weight Brazing

    NASA Technical Reports Server (NTRS)

    Gaw, William D.

    1991-01-01

    Method of deadweight loading for vacuum-furnace brazing improves quality of joint, increases yield, and reduces costs. In improved method, plates weighted with heavy stainless-steel blocks. Blocks act independently and are immune to distortion. Besides being uniformly distributed, force applied to plates larger and repeatable from one brazing operation to next. Larger blocks used on edges of plates, where more thermal mass needed to reduce differences between temperatures of interior and edge as temperature of furnace varied.

  9. Uniform batch processing using microwaves

    NASA Technical Reports Server (NTRS)

    Barmatz, Martin B. (Inventor); Jackson, Henry W. (Inventor)

    2000-01-01

    A microwave oven and microwave heating method generates microwaves within a cavity in a predetermined mode such that there is a known region of uniform microwave field. Samples placed in the region will then be heated in a relatively identical manner. Where perturbations induced by the samples are significant, samples are arranged in a symmetrical distribution so that the cumulative perturbation at each sample location is the same.

  10. Natural frequency of uniform and optimized tetrahedral truss platforms

    NASA Technical Reports Server (NTRS)

    Wu, K. Chauncey; Lake, Mark S.

    1994-01-01

    Qualitative and quantitative estimates for the fundamental frequency of uniform and optimized tetrahedral truss platforms are determined. A semiempirical equation is developed for the frequency of free-free uniform trusses as a function of member material properties, truss dimensions, and parasitic (nonstructural) mass fraction Mp/Mt. Optimized trusses with frequencies approximately two times those of uniform trusses are determined by varying the cross-sectional areas of member groups. Trusses with 3 to 8 rings, no parasitic mass, and member areas up to 25 times the minimum area are optimized. Frequencies computed for ranges of both Mp/Mt and the ratio of maximum area to minimum area are normalized to the frequency of a uniform truss with no parasitic mass. The normalized frequency increases with the number of rings, and both frequency and the ratio of maximum area to minimum area decrease with increasing Mp/Mt. Frequency improvements that are achievable with a limited number of member areas are estimated for a 3-ring truss by using Taguchi methods. Joint stiffness knockdown effects are also considered. Comparison of optimized and baseline uniform truss frequencies indicates that tailoring can significantly increase structural frequency; maximum gains occur for trusses with low values of Mp/Mt. This study examines frequency trends for ranges of structural parameters and may be used as a preliminary design guide.

  11. New night vision goggle gain definition

    NASA Astrophysics Data System (ADS)

    Podobedov, Vyacheslav B.; Eppeldauer, George P.; Larason, Thomas C.

    2015-05-01

    A new definition is proposed for the calibration of Night Vision Goggle (NVG) gains. This definition is based on the measurement of radiometric input and output quantities of the NVG. While the old definition used the "equivalent fL" which is a non SI traceable luminance unit, the new definition utilizes the radiance quantities that are traceable to the SI units through NIST standards. The new NVG gain matches the previous one as a result of the application of a correction coefficient originating from the conversion of the radiance to luminance units. The new definition was tested at the NIST Night Vision Calibration Facility and the measurement results were compared to the data obtained with a Hoffman Test Set Model ANV-126. Comparing the radiometric quantities of the Hoffman Test Set and those measured by the NIST transfer standard radiometer, indicates that the observed differences up to 15% were due to the calibration and experimental errors of the ANV-126 Test Set. In view of different spectral characteristics of luminophores that can be utilized in the NVG design, the simulation of the NVG output for gain measurement was performed. The NVG output was simulated with a sphere-based source using different LEDs and the measured gain was compared to that obtained with the ANV-126 internal luminance meter. The NVG gain uncertainty analysis was performed for the Type A, B, and C goggles.

  12. Fluid mixing technique increases the gain and output power of carbon dioxide laser systems

    NASA Technical Reports Server (NTRS)

    Cool, T. A.

    1970-01-01

    High speed flowing gas system provides uniform mixing in short times compared to flow transit times and carbon dioxide vibrational relaxation times. This system minimizes the effects of surrounding surfaces and provides a uniformly high gain that is independent of dimensions transverse to the flow direction.

  13. Experience matters: information acquisition optimizes probability gain.

    PubMed

    Nelson, Jonathan D; McKenzie, Craig R M; Cottrell, Garrison W; Sejnowski, Terrence J

    2010-07-01

    Deciding which piece of information to acquire or attend to is fundamental to perception, categorization, medical diagnosis, and scientific inference. Four statistical theories of the value of information-information gain, Kullback-Liebler distance, probability gain (error minimization), and impact-are equally consistent with extant data on human information acquisition. Three experiments, designed via computer optimization to be maximally informative, tested which of these theories best describes human information search. Experiment 1, which used natural sampling and experience-based learning to convey environmental probabilities, found that probability gain explained subjects' information search better than the other statistical theories or the probability-of-certainty heuristic. Experiments 1 and 2 found that subjects behaved differently when the standard method of verbally presented summary statistics (rather than experience-based learning) was used to convey environmental probabilities. Experiment 3 found that subjects' preference for probability gain is robust, suggesting that the other models contribute little to subjects' search behavior.

  14. Leading Gainful Employment Metric Reporting

    ERIC Educational Resources Information Center

    Powers, Kristina; MacPherson, Derek

    2016-01-01

    This chapter will address the importance of intercampus involvement in reporting of gainful employment student-level data that will be used in the calculation of gainful employment metrics by the U.S. Department of Education. The authors will discuss why building relationships within the institution is critical for effective gainful employment…

  15. Leading Gainful Employment Metric Reporting

    ERIC Educational Resources Information Center

    Powers, Kristina; MacPherson, Derek

    2016-01-01

    This chapter will address the importance of intercampus involvement in reporting of gainful employment student-level data that will be used in the calculation of gainful employment metrics by the U.S. Department of Education. The authors will discuss why building relationships within the institution is critical for effective gainful employment…

  16. Gain in Alzheimer care INstrument--a new scale to measure caregiving gains in dementia.

    PubMed

    Yap, Philip; Luo, Nan; Ng, Wai Yee; Chionh, Hui Ling; Lim, June; Goh, Jenny

    2010-01-01

    To describe and validate a new scale, Gain in Alzheimer care Instrument (GAIN), and to measure gains in dementia caregiving. Items in GAIN were derived through a qualitative study of family carers of persons with dementia (PWD). Content validity of GAIN was established by a team of dementia care experts (geriatrician, nurse, and social worker) and through focus group discussion with 15 family carers. Consecutive carers of PWD were administered a questionnaire containing GAIN and other measures. Ambulatory dementia clinic of a tertiary hospital and the local Alzheimer's Association. Family carers of PWD. The psychometric properties of GAIN were examined, in particular, exploratory factor analysis and construct validity through correlation with extant measures; Positive Aspects of Caregiving (PAC), Dementia Management Strategies Scale (DMSS), and Zarit Burden Interview (ZBI). Two hundred thirty-eight English-speaking carers completed the survey. Mean age of carers was 50.1 year (standard deviation [SD] 10.1) and females (68.1%) and child carers (81.3%) comprised the majority. Mean GAIN score was 30.5 (SD 6.5). Internal consistency of GAIN by Cronbach's alpha was 0.89 and test-retest reliability (2 weeks) by Intraclass Correlation Coefficient was 0.70. GAIN correlated strongly with PAC (r = 0.68, df = 236, p <0.0001), moderately with DMSS (encouragement) (r = 0.35, df = 234, p <0.0001) and DMSS (active management) (r = 0.42, df = 235, p <0.0001), and modestly with DMSS (criticism) (r = -0.14, df = 236, p = 0.03) and ZBI (r = -0.15, df = 236, p = 0.02). Principal component analysis revealed a single component with an Eigen value >1 at 5.28, accounting for 52.8% of the variance. GAIN is a psychometrically reliable and valid instrument for measuring gains in dementia caregiving. It adds an important dimension to carer assessment in dementia.

  17. WFC3 SS IR Flat Field Uniformity

    NASA Astrophysics Data System (ADS)

    MacKenty, John

    2012-10-01

    Part of side switch activities.We will assess the uniformity and stability of the low-frequency flat fields on the IR detector. This will be accomplished using observations of the globular cluster 47 Tucanae {NGC104} at multiple pointings with multiple filters. By placing the same star at multiple locations on the detector and measuring the relative changes in its brightness, it will be possible to determine spatial variations in the response of the detector. Based on previous work with other instruments, a set of 9 pointings should be sufficient to characterize the stability of the flat field. For each filter to be tested, this set of 9 pointings will form an 3x3 box pattern on the detector, with steps of 20% of the FOV in the x and y directions between observations. The complement of filters to be tested will be F105W, F125W, F140W, and F160W.ID: WF40

  18. Willow: a uniform search interface.

    PubMed Central

    Ketchell, D S; Freedman, M M; Jordan, W E; Lightfoot, E M; Heyano, S; Libbey, P A

    1996-01-01

    The objective of the Willow Project is to develop a uniform search interface that allows a diverse community of users to retrieve information from heterogeneous network-based information resources. Willow separates the user interface from the database management or information retrieval system. It provides a graphic user interface to a variety of information resources residing on diverse hosts, and using different search engines and idiomatic query languages through networked-based client-server and Transmission Control Protocol/Internet Protocol (TCP/IP) protocols. It is based on a "database driver'' model, which allows new database hosts to be added without altering Willow itself. Willow employs a multimedia extension mechanism to launch external viewers to handle data in almost any form. Drivers are currently available for a local BRS/SEARCH system and the Z39.50 protocol. Students, faculty, clinicians, and researchers at the University of Washington are currently offered 30 local and remote databases via Willow. They conduct more than 250,000 sessions a month in libraries, medical centers and clinics, laboratories, and offices, and from home. The Massachusetts Institute of Technology is implementing Willow as its uniform search interface to Z39.50 hosts. PMID:8750388

  19. Weight gain after smoking cessation.

    PubMed

    Pistelli, F; Aquilini, F; Carrozzi, L

    2009-06-01

    Both overweight or obesity and cigarette smoking are relevant risk factors for public health. Cigarette smoking is associated with lower body weight while smoking cessation is associated with weight gain. Most smokers who quit experience a weight gain, particularly within one year, and it may persist up to 8 years after smoking cessation. However, only a minority of quitters gain excessive weight. Some individual characteristics have been found to be associated with excessive weight gain after smoking cessation while methodological problems may affect estimates of weight gain observed in different studies. Main mechanisms to explain weight gain after smoking cessation include increased energy intake, decreased resting metabolic rate, and decreased physical activity. The health benefits of smoking cessation far exceed any health risks that may result from smoking cessation-induced body weight gain. As weight gain may be a barrier against quitting smoking or a reason to restart smoking, behavioural and pharmacological methods have been evaluated to control weight gain after smoking cessation. Physicians should apply efficient strategies to promote smoking cessation on their weight-concerned smoking patient. This review briefly addresses some issues on the relationship between smoking cessation and weight gain, with regard to the size of the problem, mechanisms, health risks and control strategies.

  20. 78 FR 50359 - Civilian Health and Medical Program of the Uniformed Services (CHAMPUS); TRICARE Uniform Health...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ... Services (CHAMPUS); TRICARE Uniform Health Maintenance Organization (HMO) Benefit--Prime Enrollment Fee... Uniform Health Maintenance Organization (HMO) Benefit--Prime Enrollment Fee Exemption for Survivors of...

  1. Attitudes of Parents about School Uniforms.

    ERIC Educational Resources Information Center

    West, Charles K.; Tidwell, Diane K.; Bomba, Anne K.; Elmore, Patsy Alexander

    1999-01-01

    Responses from 144 parents of fourth graders showed that 56% favored uniforms in public schools; most agreed that uniforms contributed to a conducive learning environment, promoted school spirit, and discouraged violence; and most disagreed that uniforms cost more than other types of clothing. (SK)

  2. GAIN Appraisal Program IV. Fourth Report.

    ERIC Educational Resources Information Center

    Simon, June; And Others

    The Greater Avenues for Independence (GAIN) legislation in California mandated a full range of employment-related training and supportive services designed to provide welfare program applicants and recipients with the skills needed to acquire unsubsidized employment through education and training. Tests to assess the basic reading, mathematics,…

  3. Uniformly dense polymeric foam body

    DOEpatents

    Whinnery, Jr., Leroy

    2003-07-15

    A method for providing a uniformly dense polymer foam body having a density between about 0.013 g/cm.sup.3 to about 0.5 g/cm.sup.3 is disclosed. The method utilizes a thermally expandable polymer microsphere material wherein some of the microspheres are unexpanded and some are only partially expanded. It is shown that by mixing the two types of materials in appropriate ratios to achieve the desired bulk final density, filling a mold with this mixture so as to displace all or essentially all of the internal volume of the mold, heating the mold for a predetermined interval at a temperature above about 130.degree. C., and then cooling the mold to a temperature below 80.degree. C. the molded part achieves a bulk density which varies by less then about .+-.6% everywhere throughout the part volume.

  4. STRUCTURE OF UNIFORMLY ROTATING STARS

    SciTech Connect

    Deupree, Robert G.

    2011-07-10

    Zero-age main-sequence models of uniformly rotating stars have been computed for 10 masses between 1.625 and 8 M{sub sun} and for 21 rotation rates from zero to nearly critical rotation. The surface shape is used to distinguish rotation rather than the surface equatorial velocity or the rotation rate. Using the surface shape is close, but not quite equivalent, to using the ratio of the rotation rate to the critical rotation rate. Using constant shape as the rotation variable means that it and the mass are separable, something that is not true for either the rotation rate or surface equatorial velocity. Thus, a number of properties, including the ratio of the effective temperature anywhere on the surface to the equatorial temperature, are nearly independent of the mass of the model, as long as the rotation rate changes in such a way as to keep the surface shape constant.

  5. Uniformly Rotating Single Substance Bodies

    NASA Astrophysics Data System (ADS)

    Leonard, Charles Michael Leo

    This dissertation explicitly and in detail solves the extended rotator problem in the uncharged relativistic classical cases of most physical interest. It shows that no plausible relativistic solutions exist in the literature of the extended rotator and that the point rotator solutions sometimes ballyhooed are not to be taken seriously. Explicit energy speedratio functions, angular momentum speedratio functions, Hamiltonian, Lagrangian, and other important characteristic functions of the state of uniform rotation of the extended body are detailed. This dissertation does not retreat to an 'analysis' of just the point rotator --which so many others have done and done incorrectly, or at best misleadingly, by hiding implausible assumptions in manifestly covariant formats. Assumptions in the model are not hidden but are brought out and analyzed as to their relevance for highlighting the core of the uniform rotation physics. Neither does the author hide any ignorance of the internal holding field for the rotator. Formulae for the characteristic Minimum Holding Field are explicitly given and their relativistic relevance is shown. The demonstration that such fields can be ignored in the energy and angular momentum expressions is completely detailed. The explicit Stress-Energy Tensor for the entire closed rotator system is given with all that entails as to the inescapability of the results from out of that mathematics. The generality of the finiteness of the extreme relativistic rotational limit is detailed and explained with its stark essential contrast to the infinite limit in the case of extreme relativistic translation of a body. The rotator is shown to possess a rich mathematical structure. Many elegant interconnection formulae are found as well as new Hamiltonian formulae --sometimes of considerable complexity. Exact rotator formulae as well as graphs, tables, and even interesting approximations are provided. New nonlinear differential equations are discovered and

  6. Adaptive uniform finite-/fixed-time convergent second-order sliding-mode control

    NASA Astrophysics Data System (ADS)

    Basin, Michael; Bharath Panathula, Chandrasekhara; Shtessel, Yuri

    2016-09-01

    This paper presents an adaptive gain algorithm for second-order sliding-mode control (2-SMC), specifically a super-twisting (STW)-like controller, with uniform finite/fixed convergence time, that is robust to perturbations with unknown bounds. It is shown that a second-order sliding mode is established as exact finite-time convergence to the origin if the adaptive gain does not have the ability to get reduced and converge to a small vicinity of the origin if the adaptation algorithm does not overestimate the control gain. The estimate of fixed convergence time of the studied adaptive STW-like controller is derived based on the Lyapunov analysis. The efficacy of the proposed adaptive algorithm is illustrated in a tutorial example, where the adaptive STW-like controller with uniform finite/fixed convergence time is compared to the adaptive STW controller with non-uniform finite convergence time.

  7. Luminance-Chrominance Gain Equalizer Based on Bernstein Polynomials

    NASA Astrophysics Data System (ADS)

    Chutchavong, Vanvisa; Sangaroon, Ornlarp; Benjangkaprasert, Chawalit; Janchitrapongvej, Kanok

    This paper presents a linear luminance-chrominance gain equalizer for correcting the linear chrominance gain distortion in the color TV transmission system. The proposed gain equalizer was implemented based on Bernstein polynomials. As it is known that the Bernstein filter has flexible parameters to adjust the circuit performance for the best results. In addition, the modulated 20T sine-squared pulse test signal is generated for testing the performance of the proposed gain equalizer, which can be measured all three types of the linear chrominance distortions. As the results, the proposed gain equalizer is also proved to be efficient in equalizing both the low gain and the high gain chrominance distortions without degrading its phase characteristics.

  8. Random walks on uniform and non-uniform combs and brushes

    NASA Astrophysics Data System (ADS)

    Plyukhin, Alex V.; Plyukhin, Dan

    2017-07-01

    We consider random walks on comb- and brush-like graphs consisting of a base (of fractal dimension D) decorated with attached side-groups. The graphs are also characterized by the fractal dimension D a of a set of anchor points where side-groups are attached to the base. Two types of graphs are considered. Graphs of the first type are uniform in the sense that anchor points are distributed periodically over the base, and thus form a subset of the base with dimension D_a=D . Graphs of the second type are decorated with side-groups in a regular yet non-uniform way: the set of anchor points has a fractal dimension smaller than that of the base, D_a. For uniform graphs, a qualitative method for evaluating the sub-diffusion exponent suggested by Forte et al for combs (D=1 ) is extended for brushes (D>1 ) and numerically tested for the Sierpinski brush (with the base and anchor set built on the same Sierpinski gasket). As an example of nonuniform graphs we consider the Cantor comb composed of a one-dimensional base and side-groups, the latter attached to the former at anchor points forming the Cantor set. A peculiar feature of this and other nonuniform systems is a long-lived regime of super-diffusive transport when side-groups are of a finite size.

  9. Uniform temperature profile for a dense array CPV receiver under non uniform illumination profile

    NASA Astrophysics Data System (ADS)

    Riera, Sara; Barrau, Jérôme; Perona, Arnaud; Dollet, Alain; Rosell, Joan I.; Fréchette, Luc

    2014-09-01

    Previous experimental and numerical studies of hybrid cooling devices for CPV receivers were developed under uniform illumination profile conditions; but literature review shows that this uniformity assumption is difficult to satisfy in real conditions. This investigation presents the design and the validation of a hybrid cooling device able to tailor its local heat extraction capacity to 2D illumination profiles in order to provide a uniform temperature profile of the PV receiver as well as a low global thermal resistance coefficient. The inputs of the design procedure are the solar concentration, the coolant flow rate and its inlet temperature. As the illumination profile is 2D dependent, a matrix of pin fins is implemented and a hybrid Jet Impingement /Matrix of Pin Fins cooling device is experimentally tested and compared to a hybrid Jet Impingement / Microchannels cooling device developed previously. The results demonstrate similar performances for both designs. Furthermore, in contrast to the cooling scheme using longitudinal fins, the distribution of the pin fins can be tailored, in two dimensions, to the local need of heat extraction capacity.

  10. A large area, high gain Micro Gap Chamber

    NASA Astrophysics Data System (ADS)

    Angelini, F.; Bellazzini, R.; Bozzo, M.; Brez, A.; Massai, M. M.; Raffo, R.; Spandre, G.; Spezziga, M.; Toropin, A.

    1995-02-01

    A new approach to the construction of the Micro Gap Chamber is presented. A 10 × 10 cm 2 MGC has been built using a 8 μm thick polyimide layer as anode-cathode insulator. Studies on gas gain, uniformity of response along the strip and charging-up have been carried out in laboratory by using X-ray sources. Very large proportional gains, up to ˜ 210 4, have been reached working with gas mixtures based on Ne-DME. The simplified technology for the detector fabrication opens the possibility to produce very large area MGCs.

  11. Smoking cessation and weight gain.

    PubMed

    Filozof, C; Fernández Pinilla, M C; Fernández-Cruz, A

    2004-05-01

    Cigarette smoking is the single most important preventable cause of death and illness. Smoking cessation is associated with substantial health benefits. Weight gain is cited as a primary reason for not trying to quit smoking. There is a great variability in the amount of weight gain but younger ages, lower socio-economic status and heavier smoking are predictors of higher weight gain. Weight change after smoking cessation appears to be influenced by underlying genetic factors. Besides, weight gain after smoking cessation is largely because of increased body fat and some studies suggest that it mostly occurs in the subcutaneous region of the body. The mechanism of weight gain includes increased energy intake, decreased resting metabolic rate, decreased physical activity and increased lipoprotein lipase activity. Although there is convincing evidence for the association between smoking cessation and weight gain, the molecular mechanisms underlying this relationship are not well understood. This review summarizes current information of the effects of nicotine on peptides involved in feeding behaviour. Smoking was shown to impair glucose tolerance and insulin sensitivity and cross-sectional studies have demonstrated that smokers are insulin-resistant and hyperinsulinaemic, as compared with non-smokers. Smoking cessation seems to improve insulin sensitivity in spite of the weight gain. Nicotine replacement - in particular nicotine gum - appears to be effective in delaying post-cessation weight gain. In a group of women who failed to quit smoking because of weight gain, a dietary intervention (intermittent very-low-calorie diet) plus nicotine gum showed to both increase success rate in terms of smoking cessation and prevent weight gain. On the other hand, body weight gain at the end of treatment was significantly lower in the patients receiving bupropion or bupropion plus nicotine patch, compared with placebo. Studies with new drugs available for the treatment of obesity

  12. Designing divertor targets for uniform power load

    NASA Astrophysics Data System (ADS)

    Dekeyser, W.; Reiter, D.; Baelmans, M.

    2015-08-01

    Divertor design for next step fusion reactors heavily relies on 2D edge plasma modeling with codes as e.g. B2-EIRENE. While these codes are typically used in a design-by-analysis approach, in previous work we have shown that divertor design can alternatively be posed as a mathematical optimization problem, and solved very efficiently using adjoint methods adapted from computational aerodynamics. This approach has been applied successfully to divertor target shape design for more uniform power load. In this paper, the concept is further extended to include all contributions to the target power load, with particular focus on radiation. In a simplified test problem, we show the potential benefits of fully including the radiation load in the design cycle as compared to only assessing this load in a post-processing step.

  13. Supersonic propeller noise in a uniform flow

    NASA Technical Reports Server (NTRS)

    Jou, Wen-Huei

    1989-01-01

    The sound field produced by a supersonic propeller operating in a uniform flow is investigated. The main interest is the effect of the finite forward flight speed on the directivity of the sound field as seen by an observer on the aircraft. It is found that there are cones of silence on the axis of the propeller. The semiapex angles on these cones are equal fore and aft of the propeller plane, and depend on the tip Mach number only. The Fourier coefficients of the acoustic pressure contain the Doppler amplification factor. The sound field weakens in the upstream direction and strengthen downstream. Kinematic considerations of the emitted Mach waves not only confirm these results, but also provide physical insight into the sound generation mechanism. The predicted zone of silence and the Doppler amplification factor are compared to the theoretical prediction of shock wave formation and the flight test of the SR3 propeller.

  14. Automatic gain-balancing circuit

    NASA Technical Reports Server (NTRS)

    Eisenhut, D. F.

    1979-01-01

    Energy reaching sensor is collected by telescope, modulated by chopper, spectrally filtered, and simultaneously directed onto two detectors. Gains through multiple signal paths are automatically balanced to 1 part in 10,000. Circuit compensates for slow changes in optical and electrical gains common to gas-filter correlation spectrometers.

  15. Computer algorithm for coding gain

    NASA Technical Reports Server (NTRS)

    Dodd, E. E.

    1974-01-01

    Development of a computer algorithm for coding gain for use in an automated communications link design system. Using an empirical formula which defines coding gain as used in space communications engineering, an algorithm is constructed on the basis of available performance data for nonsystematic convolutional encoding with soft-decision (eight-level) Viterbi decoding.

  16. Weight Gain After Kidney Transplant.

    PubMed

    Aksoy, Nilgün

    2016-11-01

    Weight gain and obesity are frequent problems for renal transplant patients. The purpose of this review is to show why weight gain is experienced by patients after kidney transplant and the significance of prevention. To investigate this topic, PubMed and Ulakbim databases were searched with the following key words: renal transplant and transplantation, weight gain, and obesity. Weight gain frequently appears in the first year after transplant, and it is reported to be a common problem for patients within the first 6 months. Weight gain varies between 6 and 10 kg, and the change in mean body mass index varies between 2 and 3.8 kg/m2 after transplant. Potential factors causing weight gain after kidney transplant are the use of immunosuppressive medications to protect the newly implanted organ and the changes in life style, such as dietary intake and insufficient physical activity. In addition, weight gain is affected by factors such as age, sex, race, lack of acute rejection, genetics, and psychological factors related to stress. A better understanding of food intake, physical activities, and environmental factors causing weight gain after kidney transplant and the development of dietary intake and physical activity protocols specific to individuals would be helpful for health care professionals.

  17. Uniform pump scheme for a LD face-pumped Nd:YAG slab amplifier

    NASA Astrophysics Data System (ADS)

    Jia, Dan; Fan, Zhongwei; Chen, Yanzhong; Guo, Guangyan; He, Jianguo; Zhao, Tianzhuo

    2016-10-01

    A new pump-shaping scheme for a LD face-pumped Nd:YAG slab laser amplifier is proposed, aiming to achieve uniform pump distributions. Plano-concave cylindrical mirror arrays are used to homogenize the pump distributions in the LD slow axes, and meanwhile optical-waveguide structures are used for the LD fast axes. Simulations based on ray tracing method indicate that the scheme effectively realizes uniform pump intensity distributions. The fluorescence distributions and small signal gains at different locations both verify the pump uniformity reaches higher than 90%.

  18. Uniform sampling table method and its applications: establishment of a uniform sampling method.

    PubMed

    Chen, Yibin; Chen, Jiaxi; Wang, Wei

    2013-01-01

    A novel uniform sampling method is proposed in this paper. According to the requirements of uniform sampling, we propose the properties that must be met by analyzing the distribution of samples. Based on this, the proposed uniform sampling method is demonstrated and evaluated strictly by mathematical means such as inference. The uniform sampling tables with respect to Cn(t2) and Cn(t3) are established. Furthermore, a one-dimension uniform sampling method and a multidimension method are proposed. The proposed novel uniform sampling method, which is guided by uniform design theory, enjoys the advantages of simplified use and good representativeness of the whole sample.

  19. Christiansen Revisited: Rethinking Quantification of Uniformity in Rainfall Simulator Studies

    NASA Astrophysics Data System (ADS)

    Green, Daniel; Pattison, Ian

    2016-04-01

    patterns are consistent between experimental runs. Inclusion of these factors would allow a more descriptive and detailed understanding of uniformity but they are seldom included in analyses. Therefore, researchers must challenge whether their sampling methodologies provide a realistic representation uniformity across the entire plot surface. This paper will discuss the issues with relying on a single percentage value to represent uniformity across a surface plot underneath rainfall simulators and suggests that researchers should seek to utilise multiple methods to quantify and describe uniformity across a plot surface. These may include combining methods such as densograms and grid representations of descriptive statistics with uniformity coefficient values to create a more holistic understanding of uniformity. Additionally, this paper will present results from a series of spray nozzle rainfall simulator tests (positioned over a 9m2 plot surface) which were conducted to investigate the influence of sampling resolution on rainfall uniformity values. Alternative methods of expressing rainfall distribution will be presented, such as a grid representation of uniformity, generated by calculating the standard deviation from the mean volume of each individual measuring beaker, which is believed to provide a clear understanding of the spatial distribution of simulated precipitation and express areas which are under- and over-watered, when presented alongside other methods of uniformity quantification.

  20. Uniform-burning matrix burner

    SciTech Connect

    Bohn, Mark S.; Anselmo, Mark

    2001-01-01

    Computer simulation was used in the development of an inward-burning, radial matrix gas burner and heat pipe heat exchanger. The burner and exchanger can be used to heat a Stirling engine on cloudy days when a solar dish, the normal source of heat, cannot be used. Geometrical requirements of the application forced the use of the inward burning approach, which presents difficulty in achieving a good flow distribution and air/fuel mixing. The present invention solved the problem by providing a plenum with just the right properties, which include good flow distribution and good air/fuel mixing with minimum residence time. CFD simulations were also used to help design the primary heat exchanger needed for this application which includes a plurality of pins emanating from the heat pipe. The system uses multiple inlet ports, an extended distance from the fuel inlet to the burner matrix, flow divider vanes, and a ring-shaped, porous grid to obtain a high-temperature uniform-heat radial burner. Ideal applications include dish/Stirling engines, steam reforming of hydrocarbons, glass working, and any process requiring high temperature heating of the outside surface of a cylindrical surface.

  1. Uniform guidelines improve client care.

    PubMed

    Barnett, B

    1994-12-01

    Uniform national guidelines on the delivery of family planning methods and services improve client care, assuming these guidelines are based on current scientific information. Compliance with these guidelines yields safe and efficient delivery of family planning services. Service providers need information, training, supplies, and guidelines to deliver quality services. Guidelines contribute to consistency among family planning programs in different settings. Even though clinics may not provide the same services, the guidelines allow them to provide the same standards of care. Specifically, eligibility criteria, contraindications, and follow-up schedules are the same regardless of the service delivery point. Various international health organizations (such as World Health Organization, USAID, Program for International Training in Health, International Planned Parenthood Federation, and Association for Voluntary Surgical Contraception) have developed guidelines for family planning service delivery. Governments can use these documents to develop national family planning guidelines and policies. They should adapt the guidelines to local needs and consider program resources. After development of the national guidelines, training, workshops, and dissemination of written materials should be provided for policymakers, physicians, nurses, and other health providers. Countries that have either developed or are working to draft their own national guidelines are Cameroon, Ghana, Mexico, and Nepal.

  2. Ejector Enhanced Pulsejet Based Pressure Gain Combustors: An Old Idea With a New Twist

    NASA Technical Reports Server (NTRS)

    Paxson, Daniel E.; Dougherty, Kevin T.

    2005-01-01

    An experimental investigation of pressure-gain combustion for gas turbine application is described. The test article consists of an off-the-shelf valved pulsejet, and an optimized ejector, both housed within a shroud. The combination forms an effective can combustor across which there is a modest total pressure rise rather than the usual loss found in conventional combustors. Although the concept of using a pulsejet to affect semi-constant volume (i.e., pressure-gain) combustion is not new, that of combining it with a well designed ejector to efficiently mix the bypass flow is. The result is a device which to date has demonstrated an overall pressure rise of approximately 3.5 percent at an overall temperature ratio commensurate with modern gas turbines. This pressure ratio is substantially higher than what has been previously reported in pulsejet-based combustion experiments. Flow non-uniformities in the downstream portion of the device are also shown to be substantially reduced compared to those within the pulsejet itself. The standard deviation of total pressure fluctuations, measured just downstream of the ejector was only 5.0 percent of the mean. This smoothing aspect of the device is critical to turbomachinery applications since turbine performance is, in general, negatively affected by flow non-uniformities and unsteadiness. The experimental rig will be described and details of the performance measurements will be presented. Analyses showing the thermodynamic benefits from this level of pressure-gain performance in a gas turbine will also be assessed for several engine types. Issues regarding practical development of such a device are discussed, as are potential emissions reductions resulting from the rich burning nature of the pulsejet and the rapid mixing (quenching) associated with unsteady ejectors.

  3. Monolithic F-16 Uniform Thickness Stretched Acrylic Canopy Transparency Program

    DTIC Science & Technology

    1984-01-01

    Thermoforming Finite Strain Analysis Finite Element Modeling Mooney Formulation Tensile Testing Acrylic Material Properties F-16 Transparency Thinning Uniform...OF ACRYLIC TENSILE SPECIMEN ...... 8 MARC ANALYSIS OF ACRYLIC HEMISPHERE ............ 12 IV ACRYLIC MATERIAL PROPERTIES AT THERMOFORMING TEMPERATURES...properties (necessary for finite element stress analysis work) were generated at temperatures in the range of thermoforming . A finite element code

  4. Investigation of light output uniformity and performance using a UV transmitting glass optic for a multi-UV LED array

    NASA Astrophysics Data System (ADS)

    Jasenak, Brian; Willsey, Rachel; Willsey, Adam; Forish, James

    2016-03-01

    Ultraviolet light-emitting diode (UV LED) adoption is accelerating; they are being used in new applications such as UV curing, germicidal irradiation, nondestructive testing, and forensic analysis. In many of these applications, it is critically important to produce a uniform light distribution and consistent surface irradiance. Flat panes of fused quartz, silica, or glass are commonly used to cover and protect multi-UV LED arrays. However, they don't offer the advantages of an optical lens design. An investigation was conducted to determine the effect of a secondary glass optic on the uniformity of the light distribution and irradiance. Glass optics capable of transmitting UV-A, UV-B, and UV-C wavelengths can improve light distribution and intensity. In this study, a UV transmitting glass formulation and secondary linear optic were designed and manufactured to demonstrate their effects on achievable irradiance intensity and uniformity. Prismatic patterning on the light source surface of the lens was used to minimize reflection losses on the incident surface of the glass. Fresnel optics were molded into the opposite side of the UV transmitting glass to control the refraction of the light and to gain the desired light intensity distribution from two multi-UV LED arrays. A 20% increase in relative irradiance was observed while maintaining the same coverage area. This work discusses the optical design and the resulting benefits of controlled light output on UV LED systems, which include reduced driving current, decreased thermal deterioration, improved energy efficiency, and longer LED lifetime.

  5. The symbolism and myth surrounding nurses' uniform.

    PubMed

    Richardson, M

    This article addresses nurses' uniform from the perspective of the symbolic, myth, legend and competing discourse. The analysis touches upon why nurses working with people who have learning disabilities discarded the nurses' uniform and why other nurses may consider doing so, particularly if suitable alternatives exist. The analysis draws from various areas of nursing practice, including the nursing of disabled people, elderly people and people with learning disabilities. Nurses' uniform is revealed as a totem of considerable potency such that to wear a uniform in just any setting or context has to be cautioned. The practicalities of protective clothing are addressed. A differentiation is drawn between uniform and protective clothing such that much of the undesirable symbolism associated with uniform may be discarded with a consequent enhancement of the image of the nurse.

  6. Performance study of the effective gain of the double phase liquid Argon LEM Time Projection Chamber

    NASA Astrophysics Data System (ADS)

    Cantini, C.; Epprecht, L.; Gendotti, A.; Horikawa, S.; Periale, L.; Murphy, S.; Natterer, G.; Regenfus, C.; Resnati, F.; Sergiampietri, F.; Rubbia, A.; Viant, T.; Wu, S.

    2015-03-01

    The Large Electron Multipliers (LEMs) are key components of double phase liquid argon TPCs. The drifting charges after being extracted from the liquid are amplified in the LEM positioned half a centimeter above the liquid in pure argon vapor at 87 K. The LEM is characterised by the size of its dielectric rim around the holes, the thickness of the LEM insulator, the diameter of the holes as well as their geometrical layout. The impact of those design parameters on the amplification were checked by testing seven different LEMs with an active area of 10×10 cm2 in a double phase liquid argon TPC of 21 cm drift. We studied their response in terms of maximal reachable gain and impact on the collected charge uniformity as well as the long-term stability of the gain. We show that we could reach maximal gains of around 150 which corresponds to a signal-to-noise ratio (S/N) of about 800 for a minimal ionising particle (MIP) signal on 3 mm readout strips. We could also conclude that the dielectric surfaces in the vicinity of the LEM holes charge up with different time constants that depend on their design parameters. Our results demonstrate that the LAr LEM TPC is a robust concept that is well-understood and well-suited for operation in ultra-pure cryogenic environments and that can match the goals of future large-scale liquid argon detectors.

  7. Uniform Additivity in Classical and Quantum Information

    NASA Astrophysics Data System (ADS)

    Cross, Andrew; Li, Ke; Smith, Graeme

    2017-01-01

    Information theory quantifies the optimal rates of resource interconversions, usually in terms of entropies. However, nonadditivity often makes evaluating entropic formulas intractable. In a few auspicious cases, additivity allows a full characterization of optimal rates. We study uniform additivity of formulas, which is easily evaluated and captures all known additive quantum formulas. Our complete characterization of uniform additivity exposes an intriguing new additive quantity and identifies a remarkable coincidence—the classical and quantum uniformly additive functions with one auxiliary variable are identical.

  8. Hydraulic machine with non-uniform cascade

    NASA Astrophysics Data System (ADS)

    Haluza, M.; Pochylý, F.; Habán, V.

    2012-11-01

    In this article is introduced the sentence of an extension of operational zone of hydraulic machines. The problems of its extending is based on the design of non-uniform cascade. The non-uniform cascade is connected with other factors. The change of own frequency of the runner of a hydraulic machine and pressure pulsations. The suitable construction of non-uniform cascade is introduced on the results of computational simulation and experiment.

  9. Differences in the scale dependence of dispersivity and retardation factors estimated from forced-gradient and uniform flow tracer tests in three-dimensional physically and chemically heterogeneous porous media

    NASA Astrophysics Data System (ADS)

    Fernàndez-Garcia, Daniel; Illangasekare, Tissa H.; Rajaram, Harihar

    2005-03-01

    Parameters estimated from forced-gradient tracer tests are often used to simulate the transport of large contaminant plumes under natural gradients, yet the difference in the flow system and the plume size is important. Recent intermediate-scale experiments and numerical simulations in two dimensions have suggested that dispersivities from forced-gradient tracer tests involving a small source may not be adequate to simulate the migration of a large plume under natural-gradient conditions. The differences in the scale dependence of effective dispersivities Aeff (for conservative and linearly sorbing solutes) and retardation factors Reff due to changes in the flow configuration and source size are investigated here on the basis of numerical simulations in three-dimensional physically and chemically heterogeneous porous media. It is shown that discrepancies observed in two dimensions due to small-source size and nonuniform flow conditions are not so dramatic in typical field settings because a small vertical correlation scale permits a tracer source to sample the medium heterogeneity more effectively. We further analyzed the benefit of using multiple injections in tracer tests by evaluating (1) the reduction in dispersivity due to the small-source size and (2) the uncertainty in dispersivity estimates (coefficient of variation). The distance scales at which Aeff and Reff from single and multiple injection convergent flow tracer tests approach constant values are significantly greater than analogous values for natural gradients. When dispersivities are estimated from convergent flow tracer tests involving multiple injections, asymptotic Aeff values are the same as those obtained from large-source natural-gradient tests. In both convergent flows and natural-gradient systems, in the case of a negative correlation between lnK and lnKd random fields, Reff estimated from temporal moments of breakthrough curves decrease with distance, while Reff estimated from the center of

  10. Physicians' Use of Compliance Gaining.

    PubMed

    Pochop, Kayla; Tyler, Jill

    2016-07-01

    A qualitative analysis was conducted exploring physicians' use of compliance gaining strategies used in attempts to change patient behaviors. Analysis revealed six sets of perceptions that describe the ways physicians manage the difficult task of compliance gaining - recognition of failure, tolerance of outside credibility, labeling the "art of medicine," assigning patient responsibility, placing patients on "their journey," and acknowledging "the event." Analysis also identified three key sets of strategies that physicians use in compliance gaining: 1) message strategies (which include direct and strategic attempts to manage interactions about behavior change); 2) relational strategies (which emerge from the relationship shared by the physician and the patient); and 3) personal strategies (which include the individual physician's approaches to compliance gaining). Eight message strategies, three relational strategies, and two personal strategies are identified and described. Copyright© South Dakota State Medical Association.

  11. Theory and Simulation of Gain-Guided Noncollinear Modes in Chirped Quasi-Phase-Matched Optical Parametric Amplifiers

    SciTech Connect

    Charbonneau-Lefort, Mathieu; Afeyan, Bedros; Fejer, Martin

    2009-09-01

    Chirped quasi-phase-matched (QPM) gratings offer essentially constant gain over wide bandwidths, making them promising candidates for short-pulse optical parametric amplifiers. However, experiments have shown that high-gain non-collinear processes exist in spite of the dephasing caused by the non-uniformity of the QPM grating and compete with the desired collinear broadband gain of the amplifier. In this paper, these non-collinear gain-guided modes are investigated numerically and analytically in a model that includes longitudinal non-uniformity of the phase-matching profile, lateral localization of the pump beam and non-collinear propagation of the interacting waves.

  12. Improved Gain Microstrip Patch Antenna

    DTIC Science & Technology

    2015-08-06

    08-2015 Publication Improved Gain Microstrip Patch Antenna David A. Tonn Naval Under Warfare Center Division, Newport 1176 Howell St., Code 00L...Distribution A An antenna for mounting on a ground plane includes a dielectric substrate for mounting on the ground plane. A conductive patch...GAIN MICROSTRIP PATCH ANTENNA STATEMENT OF GOVERNMENT INTEREST [0001] The invention described herein may be manufactured and used by or for the

  13. Modal Analysis and Gain Estimation

    NASA Technical Reports Server (NTRS)

    Jones, R. L.

    1986-01-01

    Interactive program yields eigenvectors, eigenvalues, and gains for feedback-control systems. Interactive Modal Analysis and Gain Estimation System (IMAGES) provides eigensystem synthesis capability to control-system engineer. IMAGES modular and flexible. Capable of both modal and spectral synthesis of multi-input control systems. IMAGES user-oriented, interactive program that frees engineer to concentrate on eigensystem synthesis. Engineer provided with scratch-pad capability that speeds control-system design.

  14. Developmental Gains in Visuospatial Memory Predict Gains in Mathematics Achievement

    PubMed Central

    Li, Yaoran; Geary, David C.

    2013-01-01

    Visuospatial competencies are related to performance in mathematical domains in adulthood, but are not consistently related to mathematics achievement in children. We confirmed the latter for first graders and demonstrated that children who show above average first-to-fifth grade gains in visuospatial memory have an advantage over other children in mathematics. The study involved the assessment of the mathematics and reading achievement of 177 children in kindergarten to fifth grade, inclusive, and their working memory capacity and processing speed in first and fifth grade. Intelligence was assessed in first grade and their second to fourth grade teachers reported on their in-class attentive behavior. Developmental gains in visuospatial memory span (d = 2.4) were larger than gains in the capacity of the central executive (d = 1.6) that in turn were larger than gains in phonological memory span (d = 1.1). First to fifth grade gains in visuospatial memory and in speed of numeral processing predicted end of fifth grade mathematics achievement, as did first grade central executive scores, intelligence, and in-class attentive behavior. The results suggest there are important individual differences in the rate of growth of visuospatial memory during childhood and that these differences become increasingly important for mathematics learning. PMID:23936154

  15. Developmental gains in visuospatial memory predict gains in mathematics achievement.

    PubMed

    Li, Yaoran; Geary, David C

    2013-01-01

    Visuospatial competencies are related to performance in mathematical domains in adulthood, but are not consistently related to mathematics achievement in children. We confirmed the latter for first graders and demonstrated that children who show above average first-to-fifth grade gains in visuospatial memory have an advantage over other children in mathematics. The study involved the assessment of the mathematics and reading achievement of 177 children in kindergarten to fifth grade, inclusive, and their working memory capacity and processing speed in first and fifth grade. Intelligence was assessed in first grade and their second to fourth grade teachers reported on their in-class attentive behavior. Developmental gains in visuospatial memory span (d = 2.4) were larger than gains in the capacity of the central executive (d = 1.6) that in turn were larger than gains in phonological memory span (d = 1.1). First to fifth grade gains in visuospatial memory and in speed of numeral processing predicted end of fifth grade mathematics achievement, as did first grade central executive scores, intelligence, and in-class attentive behavior. The results suggest there are important individual differences in the rate of growth of visuospatial memory during childhood and that these differences become increasingly important for mathematics learning.

  16. Modeling surface plasmon-polariton gain in planar metallic structures.

    PubMed

    De Leon, Israel; Berini, Pierre

    2009-10-26

    Amplification of the single-interface and long-range surface plasmon-polariton modes is studied in planar metallic structures incorporating gain media formed by Rhodamine 6G dye molecules in solution. We employ a theoretical model that accounts for the nonuniformity of the gain medium close to the metal surface due to position-dependent dipole lifetime and pump irradiance. The results of this model are used as a baseline for a comparative study against two simplified models: one neglects the position-dependent dipole lifetime while the other assumes a uniform gain medium. The discrepancies between the models are explained in terms of the mode overlap with the gain distribution near the metal. For the cases under analysis, the simplified models estimate the required pump irradiance with deviation factors that vary from 1.45 at the lossless conditions to 8 for gains near saturation. The relevance of describing properly the amount o gain interacting with the SPP mode and the role played by the dipole quantum efficiency are discussed.

  17. Weight Gain Prevention among Women

    PubMed Central

    Levine, Michele D.; Klem, Mary Lou; Kalarchian, Melissa A.; Wing, Rena R.; Weissfeld, Lisa; Qin, Li; Marcus, Marsha D.

    2008-01-01

    Objective: Women 25 to 45 years old are at risk for weight gain and future obesity. This trial was designed to evaluate the efficacy of two interventions relative to a control group in preventing weight gain among normal or overweight women and to identify demographic, behavioral, and psychosocial factors related to weight gain prevention. Research Methods and Procedures: Healthy women (N = 284), ages 25 to 44, with BMI < 30 were randomized to one of three intervention conditions: a clinic-based group, a correspondence course, or an information-only control. Intervention was provided over 2 years, with a follow-up at Year 3. BMI and factors related to eating and weight were assessed yearly. Results: Over the 3-year study period, 40% (n = 114) of the women remained at or below baseline body weight (±2 lbs), and 60% gained weight (>2 lbs). Intervention had no effect on weight over time. Independently of intervention, women who were older, not actively dieting to lose weight, and who reported less perceived hunger at baseline were more likely to be successful at weight maintenance. Weight maintenance also was associated with increasing dietary restraint (conscious thoughts and purposeful behaviors to control calorie intake) and decreasing dietary disinhibition (the tendency to lose control over eating) over time. Discussion: This study raises concern about the feasibility and efficacy of weight gain prevention interventions because most women were interested in weight loss, rather than weight gain prevention, and the interventions had no effect on weight stability. Novel approaches to the prevention of weight gain are needed. PMID:17495203

  18. 46 CFR 310.11 - Cadet uniforms.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 8 2010-10-01 2010-10-01 false Cadet uniforms. 310.11 Section 310.11 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION TRAINING MERCHANT MARINE TRAINING Regulations and Minimum Standards for State, Territorial or Regional Maritime Academies and Colleges § 310.11 Cadet uniforms. Cadet...

  19. Uniform insulation applied-B ion diode

    DOEpatents

    Seidel, David B.; Slutz, Stephen A.

    1988-01-01

    An applied-B field extraction ion diode has uniform insulation over an anode surface for increased efficiency. When the uniform insulation is accomplished with anode coils, and a charge-exchange foil is properly placed, the ions may be focused at a point on the z axis.

  20. School Dress Codes and Uniform Policies.

    ERIC Educational Resources Information Center

    Anderson, Wendell

    2002-01-01

    Opinions abound on what students should wear to class. Some see student dress as a safety issue; others see it as a student-rights issue. The issue of dress codes and uniform policies has been tackled in the classroom, the boardroom, and the courtroom. This Policy Report examines the whole fabric of the debate on dress codes and uniform policies…

  1. Student Dress Codes and Uniforms. Research Brief

    ERIC Educational Resources Information Center

    Johnston, Howard

    2009-01-01

    According to an Education Commission of the States "Policy Report", research on the effects of dress code and school uniform policies is inconclusive and mixed. Some researchers find positive effects; others claim no effects or only perceived effects. While no state has legislatively mandated the wearing of school uniforms, 28 states and…

  2. School Uniform Policies: Students' Views of Effectiveness.

    ERIC Educational Resources Information Center

    McCarthy, Teresa M.; Moreno, Josephine

    2001-01-01

    Focus-group interviews of New York City middle-school students about their perceptions of the effectiveness of the school-uniform policy. Finds that students' perceptions of the effects of school-uniform policy on school culture varied considerably with those intended by the principal. (Contains 40 references.) (PKP)

  3. School Uniforms and Discourses on Childhood.

    ERIC Educational Resources Information Center

    Bodine, Ann

    2003-01-01

    This ethnographic study examined the introduction of school uniforms in the public schools of one California city. Findings indicated that the uniform issue intersected with issues such as student safety and violence, family stress, egalitarianism, competitive dressing, and a power struggle over shaping the childhood environment. It was concluded…

  4. A School Uniform Program That Works.

    ERIC Educational Resources Information Center

    Loesch, Paul C.

    1995-01-01

    According to advocates, school uniforms reduce gang influence, decrease families' clothing expenditures, and help mitigate potentially divisive cultural and economic differences. Aiming to improve school climate, a California elementary school adopted uniforms as a source of pride and affiliation. This article describes the development of the…

  5. School Uniform Policies in Public Schools

    ERIC Educational Resources Information Center

    Brunsma, David L.

    2006-01-01

    The movement for school uniforms in public schools continues to grow despite the author's research indicating little if any impact on student behavior, achievement, and self-esteem. The author examines the distribution of uniform policies by region and demographics, the impact of these policies on perceptions of school climate and safety, and…

  6. Coded aperture imaging with uniformly redundant arrays

    DOEpatents

    Fenimore, Edward E.; Cannon, Thomas M.

    1980-01-01

    A system utilizing uniformly redundant arrays to image non-focusable radiation. The uniformly redundant array is used in conjunction with a balanced correlation technique to provide a system with no artifacts such that virtually limitless signal-to-noise ratio is obtained with high transmission characteristics. Additionally, the array is mosaicked to reduce required detector size over conventional array detectors.

  7. Coded aperture imaging with uniformly redundant arrays

    DOEpatents

    Fenimore, Edward E.; Cannon, Thomas M.

    1982-01-01

    A system utilizing uniformly redundant arrays to image non-focusable radiation. The uniformly redundant array is used in conjunction with a balanced correlation technique to provide a system with no artifacts such that virtually limitless signal-to-noise ratio is obtained with high transmission characteristics. Additionally, the array is mosaicked to reduce required detector size over conventional array detectors.

  8. Diversity in representations; uniformity in learning.

    PubMed

    Danks, David; Rose, David

    2010-06-01

    Henrich et al.'s conclusion that psychologists ought not assume uniformity of psychological phenomena depends on their descriptive claim that there is no pattern to the great diversity in psychological phenomena. We argue that there is a pattern: uniformity of learning processes (broadly construed), and diversity of (some) mental contents (broadly construed).

  9. X chromosome gain in male breast cancer.

    PubMed

    Di Oto, Enrico; Monti, Valentina; Cucchi, Maria C; Masetti, Riccardo; Varga, Zsuzsanna; Foschini, Maria P

    2015-12-01

    Male breast cancer (MBC) is an uncommon disease whose molecular profile is not well known. X chromosome gain has been described as a marker of aggressive behavior in female breast cancer. The aim of this study is to investigate the role of the X chromosome in male breast cancer. Twenty cases of male breast invasive ductal carcinoma were retrieved and compared with 10 cases of gynecomastia. Cases were tested by fluorescence in situ hybridization to assess a cytogenetic profile for the X chromosome. The X chromosome status was compared with histopathologic features and stage at presentation. All MBC cases harbored an X chromosome gain (100%) in a variable percentage of neoplastic cells, ranging from 31% to 85% (mean, 59%). On the contrary, all cases of gynecomastia showed wild X chromosome asset. The patients' age at surgery and tumor grading showed a statistically significant correlation (P = .0188-.04), with the percentages of neoplastic cells showing an X chromosome gain. These data suggest that this X chromosome gain plays a role in the neoplastic transformation of male breast epithelial cells.

  10. Effects of filter housing and ductwork configuration on air flow uniformity inside air cleaning filter housings

    SciTech Connect

    Paul, J.D.

    1992-12-31

    Each new HEPA filter installation presents a different physical configuration based on the system requirements the available space and designer preference. Each different configuration can result in variations of air flow uniformity inside the filter housing across the filter banks. This paper will present the results of air flow uniformity testing for six different filter housing/ductwork configurations and discuss if any of the variations in air flow uniformity is attributable to the difference in the physical arrangements for the six cases.

  11. Effects of filter housing and ductwork configuration on air flow uniformity inside air cleaning filter housings

    SciTech Connect

    Paul, J.D.

    1992-01-01

    Each new HEPA filter installation presents a different physical configuration based on the system requirements the available space and designer preference. Each different configuration can result in variations of air flow uniformity inside the filter housing across the filter banks. This paper will present the results of air flow uniformity testing for six different filter housing/ductwork configurations and discuss if any of the variations in air flow uniformity is attributable to the difference in the physical arrangements for the six cases.

  12. Gamma-Rhythmic Gain Modulation.

    PubMed

    Ni, Jianguang; Wunderle, Thomas; Lewis, Christopher Murphy; Desimone, Robert; Diester, Ilka; Fries, Pascal

    2016-10-05

    Cognition requires the dynamic modulation of effective connectivity, i.e., the modulation of the postsynaptic neuronal response to a given input. If postsynaptic neurons are rhythmically active, this might entail rhythmic gain modulation, such that inputs synchronized to phases of high gain benefit from enhanced effective connectivity. We show that visually induced gamma-band activity in awake macaque area V4 rhythmically modulates responses to unpredictable stimulus events. This modulation exceeded a simple additive superposition of a constant response onto ongoing gamma-rhythmic firing, demonstrating the modulation of multiplicative gain. Gamma phases leading to strongest neuronal responses also led to shortest behavioral reaction times, suggesting functional relevance of the effect. Furthermore, we find that constant optogenetic stimulation of anesthetized cat area 21a produces gamma-band activity entailing a similar gain modulation. As the gamma rhythm in area 21a did not spread backward to area 17, this suggests that postsynaptic gamma is sufficient for gain modulation. Copyright © 2016 Elsevier Inc. All rights reserved.

  13. Problems with IQ Gains: The Huge Vocabulary Gap

    ERIC Educational Resources Information Center

    Flynn, James R.

    2010-01-01

    Despite Kaufman, Raven's Progressive Matrices and the Wechsler subtest Similarities are tests whose gains call for special explanation. The spread of "scientific spectacles" is the key, but its explanatory potential has been exhausted. Three trends force us to look elsewhere: (a) gains on Wechsler subtests such as Picture Arrangement,…

  14. Problems with IQ Gains: The Huge Vocabulary Gap

    ERIC Educational Resources Information Center

    Flynn, James R.

    2010-01-01

    Despite Kaufman, Raven's Progressive Matrices and the Wechsler subtest Similarities are tests whose gains call for special explanation. The spread of "scientific spectacles" is the key, but its explanatory potential has been exhausted. Three trends force us to look elsewhere: (a) gains on Wechsler subtests such as Picture Arrangement,…

  15. High current gain transistor laser

    PubMed Central

    Liang, Song; Qiao, Lijun; Zhu, Hongliang; Wang, Wei

    2016-01-01

    A transistor laser (TL), having the structure of a transistor with multi-quantum wells near its base region, bridges the functionality gap between lasers and transistors. However, light emission is produced at the expense of current gain for all the TLs reported up to now, leading to a very low current gain. We propose a novel design of TLs, which have an n-doped InP layer inserted in the emitter ridge. Numerical studies show that a current flow aperture for only holes can be formed in the center of the emitter ridge. As a result, the common emitter current gain can be as large as 143.3, which is over 15 times larger than that of a TL without the aperture. Besides, the effects of nonradiative recombination defects can be reduced greatly because the flow of holes is confined in the center region of the emitter ridge. PMID:27282466

  16. Absolute gain measurement by the image method under mismatched condition

    NASA Technical Reports Server (NTRS)

    Lee, Richard Q.; Baddour, Maurice F.

    1987-01-01

    Purcell's image method for measuring the absolute gain of an antenna is particularly attractive for small test antennas. The method is simple to use and utilizes only one antenna with a reflecting plane to provide an image for the receiving antenna. However, the method provides accurate results only if the antenna is matched to its waveguide. In this paper, a waveguide junction analysis is developed to determine the gain of an antenna under mismatched condition. Absolute gain measurements for two standard gain horn antennas have been carried out. Experimental results agree closely with published data.

  17. 78 FR 48366 - Civilian Health and Medical Program of the Uniformed Services (CHAMPUS); TRICARE Uniform Health...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-08

    ... Services (CHAMPUS); TRICARE Uniform Health Maintenance Organization (HMO) Benefit--Prime Enrollment Fee... proposed rule would establish an exception to the usual rule that TRICARE Prime enrollment fees are uniform... Sponsors and Medically Retired Uniformed Services Members and their Dependents enrolled in Prime to be...

  18. 78 FR 34292 - Civilian Health and Medical Program of the Uniformed Services (CHAMPUS); TRICARE Uniform Health...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-07

    ... Services (CHAMPUS); TRICARE Uniform Health Maintenance Organization (HMO) Benefit--Prime Enrollment Fee... proposed rule would establish an exception to the usual rule that TRICARE Prime enrollment fees are uniform... Sponsors and Medically Retired Uniformed Services Members and their Dependents enrolled in Prime to be...

  19. The effect of operating conditions on resistance parameters of filter media and limestone dust cake for uniformly loaded needle felts in a pilot scale test facility at ambient conditions.

    PubMed

    Saleem, Mahmood; Krammer, Gernot; Tahir, M Suleman

    2012-09-01

    Resistance parameters are essential for the prediction of pressure drop in bag filters. The reported values for limestone dust differ in magnitude and also depend on operating parameters. In this work, experimental data is provided from a pilot scale pulse-jet regenerated bag filter test facility for three types of needle felts using air and limestone dust at ambient conditions. Results reveal that specific resistance of filter media is independent of velocity while the specific resistance of filter cake increases linearly with filtration velocity. Residual pressure drop is almost constant, independent of upper pressure drop limit. The cake resistance at constant velocity fits to a second degree polynomial whereas it increases linearly with the velocity. A linear relation is reported here for all the cases. The resistance of filter cake decreases at higher upper pressure drop limit.

  20. Welfare Gains from Financial Liberalization

    PubMed Central

    Townsend, Robert M.; Ueda, Kenichi

    2010-01-01

    Financial liberalization has been a controversial issue, as empirical evidence for growth enhancing effects is mixed. Here, we find sizable welfare gains from liberalization (cost to repression), though the gain in economic growth is ambiguous. We take the view that financial liberalization is a government policy that alters the path of financial deepening, while financial deepening is endogenously chosen by agents given a policy and occurs in transition towards a distant steady state. This history-dependent view necessitates the use of simulation analysis based on a growth model. Our application is a specific episode: Thailand from 1976 to 1996. PMID:20806055