Science.gov

Sample records for eestlase pass valmib

  1. Establishing Passing Scores.

    ERIC Educational Resources Information Center

    McLarty, Joyce R.

    The problem of establishing appropriate passing scores is one of evaluation rather than estimation and not amenable to exact solution. It must therefore be approached by (1) identifying criteria for judging the acceptability of the passing score, (2) collecting the data appropriate to assessing each relevant criterion, and (3) judging how well the…

  2. Passing and Catching in Rugby.

    ERIC Educational Resources Information Center

    Namudu, Mike M.

    This booklet contains the fundamentals for rugby at the primary school level. It deals primarily with passing and catching the ball. It contains instructions on (1) holding the ball for passing, (2) passing the ball to the left--standing, (3) passing the ball to the left--running, (4) making a switch pass, (5) the scrum half's normal pass, (6) the…

  3. On "Passing" through Adolescence.

    ERIC Educational Resources Information Center

    Uttermohlen, T. L.

    1997-01-01

    The author, born with a severe visual impairment, addresses the tendency of adolescents with visual impairments to try to hide the disability and "pass" as unimpaired with their peers. It is suggested that these adolescents be helped to find a comfortable balance between taking excessive risks and allowing visual impairment or blindness to be an…

  4. Message passing in PUMA

    SciTech Connect

    Maccabe, A.B. |; Wheat, S.R.

    1993-05-01

    This paper provides an overview of the message passing primitives provided by PUMA (Performance-oriented, User-managed Messaging Architecture). Message passing in PUMA is based on the concept of a portal--an opening in the address space of an application process. Once an application process has established a portal, other processes can write values into the memory associated with the portal using a simple send operation. Because messages are written directly into the address space of the receiving process, there is not need to buffer messages in the PUMA kernel. This simplifies the design of the kernel, increasing its reliability and portability. Moreover, because messages are mapped directly into the address space of the application process, the application can manage the messages that it receives without needing direct support from the kernel.

  5. Multi-pass microscopy

    NASA Astrophysics Data System (ADS)

    Juffmann, Thomas; Klopfer, Brannon B.; Frankort, Timmo L. I.; Haslinger, Philipp; Kasevich, Mark A.

    2016-09-01

    Microscopy of biological specimens often requires low light levels to avoid damage. This yields images impaired by shot noise. An improved measurement accuracy at the Heisenberg limit can be achieved exploiting quantum correlations. If sample damage is the limiting resource, an equivalent limit can be reached by passing photons through a specimen multiple times sequentially. Here we use self-imaging cavities and employ a temporal post-selection scheme to present full-field multi-pass polarization and transmission micrographs with variance reductions of 4.4+/-0.8 dB (11.6+/-0.8 dB in a lossless setup) and 4.8+/-0.8 dB, respectively, compared with the single-pass shot-noise limit. If the accuracy is limited by the number of detected probe particles, our measurements show a variance reduction of 25.9+/-0.9 dB. The contrast enhancement capabilities in imaging and in diffraction studies are demonstrated with nanostructured samples and with embryonic kidney 293T cells. This approach to Heisenberg-limited microscopy does not rely on quantum state engineering.

  6. Multi-pass microscopy

    PubMed Central

    Juffmann, Thomas; Klopfer, Brannon B.; Frankort, Timmo L.I.; Haslinger, Philipp; Kasevich, Mark A.

    2016-01-01

    Microscopy of biological specimens often requires low light levels to avoid damage. This yields images impaired by shot noise. An improved measurement accuracy at the Heisenberg limit can be achieved exploiting quantum correlations. If sample damage is the limiting resource, an equivalent limit can be reached by passing photons through a specimen multiple times sequentially. Here we use self-imaging cavities and employ a temporal post-selection scheme to present full-field multi-pass polarization and transmission micrographs with variance reductions of 4.4±0.8 dB (11.6±0.8 dB in a lossless setup) and 4.8±0.8 dB, respectively, compared with the single-pass shot-noise limit. If the accuracy is limited by the number of detected probe particles, our measurements show a variance reduction of 25.9±0.9 dB. The contrast enhancement capabilities in imaging and in diffraction studies are demonstrated with nanostructured samples and with embryonic kidney 293T cells. This approach to Heisenberg-limited microscopy does not rely on quantum state engineering. PMID:27670525

  7. Message Passing on GPUs

    NASA Astrophysics Data System (ADS)

    Stuart, J. A.

    2011-12-01

    This paper explores the challenges in implementing a message passing interface usable on systems with data-parallel processors, and more specifically GPUs. As a case study, we design and implement the ``DCGN'' API on NVIDIA GPUs that is similar to MPI and allows full access to the underlying architecture. We introduce the notion of data-parallel thread-groups as a way to map resources to MPI ranks. We use a method that also allows the data-parallel processors to run autonomously from user-written CPU code. In order to facilitate communication, we use a sleep-based polling system to store and retrieve messages. Unlike previous systems, our method provides both performance and flexibility. By running a test suite of applications with different communication requirements, we find that a tolerable amount of overhead is incurred, somewhere between one and five percent depending on the application, and indicate the locations where this overhead accumulates. We conclude that with innovations in chipsets and drivers, this overhead will be mitigated and provide similar performance to typical CPU-based MPI implementations while providing fully-dynamic communication.

  8. Multiple pass laser amplifier system

    DOEpatents

    Brueckner, Keith A.; Jorna, Siebe; Moncur, N. Kent

    1977-01-01

    A laser amplification method for increasing the energy extraction efficiency from laser amplifiers while reducing the energy flux that passes through a flux limited system which includes apparatus for decomposing a linearly polarized light beam into multiple components, passing the components through an amplifier in delayed time sequence and recombining the amplified components into an in phase linearly polarized beam.

  9. Streamlined one-pass modelling

    SciTech Connect

    Jones, J.H.; Harne, R.L.; Firth, K.J.; Meyer, G.A.

    1986-01-01

    Streamlined one-pass models provide an alternative to the standard type of one-pass models for departure from nucleate boiling ratio (DNBR) studies, which require a large number of computer simulations. The standard one-pass models simulate the limiting subchannel (subchannel in which minimum DNBR occurs), a ring of subchannels around the limiting subchannel, the remainder of the limiting bundle, and the remainder of the core. Typically, these standard models use from 8 to 12 channels and approx.20 cross-flow gaps. Babcock and Wilcox (B and W) has developed streamlined one-pass models that require approximately one-half the number of channels and approx.20% of the computer resources as the standard one-pass models. These streamlined models are applicable in one-pass analysis codes such as the B and W code LYNXT and the Electric Power Research Institute VIPRE code. Streamlined one-pass models are particularly suited to extensive studies wherein computer cost and turnaround are critical, without sacrificing DNBR accuracy. Examples of such studies are reactor protection operating limit determination, limiting transient selection, and scoping studies. Moreover, streamlined one-pass models make it possible to perform DNBR studies on personal computers (PCs) using PC-adapted codes such as COBRAPC.

  10. The ACL Message Passing Library

    SciTech Connect

    Painter, J.; McCormick, P.; Krogh, M.; Hansen, C.; Colin de Verdiere, G.

    1995-09-01

    This paper presents the ACL (Advanced Computing Lab) Message Passing Library. It is a high throughput, low latency communications library, based on Thinking Machines Corp.`s CMMD, upon which message passing applications can be built. The library has been implemented on the Cray T3D, Thinking Machines CM-5, SGI workstations, and on top of PVM.

  11. Multi-pass light amplifier

    NASA Technical Reports Server (NTRS)

    Plaessmann, Henry (Inventor); Grossman, William M. (Inventor)

    1997-01-01

    A multiple-pass laser amplifier that uses optical focusing between subsequent passes through a single gain medium so that a reproducibly stable beam size is achieved within the gain region. A confocal resonator or White Cell resonator is provided, including two or three curvilinearly shaped mirrors facing each other along a resonator axis and an optical gain medium positioned on the resonator axis between the mirrors (confocal resonator) or adjacent to one of the mirrors (White Cell). In a first embodiment, two mirrors, which may include adjacent lenses, are configured so that a light beam passing through the gain medium and incident on the first mirror is reflected by that mirror toward the second mirror in a direction approximately parallel to the resonator axis. A light beam translator, such as an optical flat of transparent material, is positioned to translate this light beam by a controllable amount toward or away from the resonator axis for each pass of the light beam through the translator. The optical gain medium may be solid-state, liquid or gaseous medium and may be pumped longitudinally or transversely. In a second embodiment, first and second mirrors face a third mirror in a White Cell configuration, and the optical gain medium is positioned at or adjacent to one of the mirrors. Defocusing means and optical gain medium cooling means are optionally provided with either embodiment, to controllably defocus the light beam, to cool the optical gain medium and to suppress thermal lensing in the gain medium.

  12. 78 FR 35625 - Sabine Pass Liquefaction Expansion, LLC; Sabine Pass Liquefaction, LLC; Sabine Pass LNG, L.P...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-13

    ..., LLC; Sabine Pass LNG, L.P.; Cheniere Creole Trail Pipeline, L.P.: Notice of Intent To Prepare an... Sabine Pass Liquefaction Expansion, LLC; Sabine Pass Liquefaction, LLC; and Sabine Pass LNG, L.P... metric tonnes of liquefied natural gas (LNG) per annum (mtpa) via LNG carriers. Trains 5 and 6...

  13. 27 CFR 9.88 - Pacheco Pass.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Pacheco Pass. 9.88 Section... Pass. (a) Name. The name of the viticultural area described in this section is “Pacheco Pass.” (b) Approved maps. The appropriate maps for determining the boundaries of Pacheco Pass viticultural area...

  14. 34 CFR 668.147 - Passing scores.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false Passing scores. 668.147 Section 668.147 Education...; Specification of Passing Score; Approval of State Process § 668.147 Passing scores. Except as provided in §§ 668... education and training offered, the Secretary specifies that the passing score on each approved test is...

  15. Multi-pass light amplifier

    NASA Technical Reports Server (NTRS)

    Plaessmann, Henry (Inventor); Grossman, William M. (Inventor); Olson, Todd E. (Inventor)

    1996-01-01

    A multiple-pass laser amplifier that uses optical focusing between subsequent passes through a single gain medium so that a reproducibly stable beam size is achieved within the gain region. A resonator or a White Cell cavity is provided, including two or more mirrors (planar or curvilinearly shaped) facing each other along a resonator axis and an optical gain medium positioned on a resonator axis between the mirrors or adjacent to one of the mirrors. In a first embodiment, two curvilinear mirrors, which may include adjacent lenses, are configured so that a light beam passing through the gain medium and incident on the first mirror is reflected by that mirror toward the second mirror in a direction approximately parallel to the resonator axis. A light beam translator, such as an optical flat of transparent material, is positioned to translate this light beam by a controllable amount toward or away from the resonator axis for each pass of the light beam through the translator. A second embodiment uses two curvilinear mirrors and one planar mirror, with a gain medium positioned in the optical path between each curvilinear mirror and the planar mirror. A third embodiment uses two curvilinear mirrors and two planar mirrors, with a gain medium positioned adjacent to a planar mirror. A fourth embodiment uses a curvilinear mirror and three planar mirrors, with a gain medium positioned adjacent to a planar mirror. A fourth embodiment uses four planar mirrors and a focusing lens system, with a gain medium positioned between the four mirrors. A fifth embodiment uses first and second planar mirrors, a focusing lens system and a third mirror that may be planar or curvilinear, with a gain medium positioned adjacent to the third mirror. A sixth embodiment uses two planar mirrors and a curvilinear mirror and a fourth mirror that may be planar or curvilinear, with a gain medium positioned adjacent to the fourth mirror. In a seventh embodiment, first and second mirrors face a third

  16. 78 FR 62344 - Sabine Pass Liquefaction Expansion, LLC, Sabine Pass Liquefaction, LLC, and Sabine Pass LNG, L.P...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-18

    ... Sabine Pass LNG, L.P., Cheniere Creole Trail Pipeline, L.P.; Notice of Application Take notice that on... LNG, L.P. (collectively referred to as Sabine Pass) filed with the Federal Energy Regulatory..., construct, and operate additional liquefied natural gas (LNG) export facilities at the Sabine Pass...

  17. When you pass your due date

    MedlinePlus

    ... medlineplus.gov/ency/patientinstructions/000515.htm When you pass your due date To use the sharing features ... link between you and your baby. As you pass your due date, the placenta may not work ...

  18. 33 CFR 117.311 - New Pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false New Pass. 117.311 Section 117.311... REGULATIONS Specific Requirements Florida § 117.311 New Pass. The drawspan for the State Road 789 Drawbridge... must be passed at anytime....

  19. Compressive Imaging via Approximate Message Passing

    DTIC Science & Technology

    2015-09-04

    We propose novel compressive imaging algorithms that employ approximate message passing (AMP), which is an iterative signal estimation algorithm that...Approved for Public Release; Distribution Unlimited Final Report: Compressive Imaging via Approximate Message Passing The views, opinions and/or findings...Research Triangle Park, NC 27709-2211 approximate message passing , compressive imaging, compressive sensing, hyperspectral imaging, signal reconstruction

  20. Effect of multiple extrusion passes on zein

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Zein was repeatedly processed up to seven times using a single screw extruder at a temperature of 145 °C and at approximately 15 grams per minute to determine the extent of degradation that occurs with multiple extrusion passes. SDS-PAGE shows that with the second pass, and each additional pass, the...

  1. 78 FR 62657 - Proposed Information Collection; The Interagency Access Pass and Senior Pass Application Processes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-22

    ... National Park Service Proposed Information Collection; The Interagency Access Pass and Senior Pass... Parks and Federal Recreation Lands Pass Program covers recreation opportunities on public lands managed... U.S. Forest Service. The passes provide U.S. citizens and visitors an affordable and convenient...

  2. 33 CFR 110.196 - Sabine Pass Channel, Sabine Pass, Tex.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Sabine Pass Channel, Sabine Pass, Tex. 110.196 Section 110.196 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.196 Sabine Pass Channel, Sabine Pass,...

  3. 33 CFR 110.196 - Sabine Pass Channel, Sabine Pass, Tex.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Sabine Pass Channel, Sabine Pass, Tex. 110.196 Section 110.196 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.196 Sabine Pass Channel, Sabine Pass,...

  4. Pass-transistor very large scale integration

    NASA Technical Reports Server (NTRS)

    Maki, Gary K. (Inventor); Bhatia, Prakash R. (Inventor)

    2004-01-01

    Logic elements are provided that permit reductions in layout size and avoidance of hazards. Such logic elements may be included in libraries of logic cells. A logical function to be implemented by the logic element is decomposed about logical variables to identify factors corresponding to combinations of the logical variables and their complements. A pass transistor network is provided for implementing the pass network function in accordance with this decomposition. The pass transistor network includes ordered arrangements of pass transistors that correspond to the combinations of variables and complements resulting from the logical decomposition. The logic elements may act as selection circuits and be integrated with memory and buffer elements.

  5. Photoacoustic Soot Spectrometer (PASS) Instrument Handbook

    SciTech Connect

    Dubey, M; Springston, S; Koontz, A; Aiken, A

    2013-01-17

    The photoacoustic soot spectrometer (PASS) measures light absorption by aerosol particles. As the particles pass through a laser beam, the absorbed energy heats the particles and in turn the surrounding air, which sets off a pressure wave that can be detected by a microphone. The PASS instruments deployed by ARM can also simultaneously measure the scattered laser light at three wavelengths and therefore provide a direct measure of the single-scattering albedo. The Operator Manual for the PASS-3100 is included here with the permission of Droplet Measurement Technologies, the instrument’s manufacturer.

  6. 78 FR 25432 - Sabine Pass LNG, L.P., Sabine Pass Liquefaction, LLC; Notice of Availability of the Environmental...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-01

    ... Energy Regulatory Commission Sabine Pass LNG, L.P., Sabine Pass Liquefaction, LLC; Notice of Availability... Sabine Pass Sabine Pass LNG, L.P. and Sabine Pass Liquefaction, LLC (Sabine Pass) in the above-referenced... construction at the existing Sabine Pass LNG terminal in Cameron Parish, Louisiana. The EA assesses...

  7. 33 CFR 117.311 - New Pass.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false New Pass. 117.311 Section 117.311 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Florida § 117.311 New Pass. The drawspan for the State Road 789...

  8. Multifrequency, single pass free electron laser

    DOEpatents

    Szoke, Abraham; Prosnitz, Donald

    1985-01-01

    A method for simultaneous amplification of laser beams with a sequence of frequencies in a single pass, using a relativistic beam of electrons grouped in a sequence of energies corresponding to the sequence of laser beam frequencies. The method allows electrons to pass from one potential well or "bucket" to another adjacent bucket, thus increasing efficiency of trapping and energy conversion.

  9. 33 CFR 117.484 - Pass Manchac.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Pass Manchac. 117.484 Section 117.484 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.484 Pass Manchac. The draw of the...

  10. 33 CFR 117.303 - Matlacha Pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Matlacha Pass. 117.303 Section 117.303 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Florida § 117.303 Matlacha Pass. The draw of the...

  11. 33 CFR 117.487 - Pierre Pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Pierre Pass. 117.487 Section 117.487 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.487 Pierre Pass. The draw of the S70...

  12. 78 FR 1851 - Sabine Pass Liquefaction, LLC and Sabine Pass LNG, L.P.; Notice of Intent To Prepare an...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-09

    ... Energy Regulatory Commission Sabine Pass Liquefaction, LLC and Sabine Pass LNG, L.P.; Notice of Intent To... facilities for Sabine Pass Liquefaction LLC and Sabine Pass LNG (Sabine Pass) in Cameron County, Louisiana... HRU, condensate storage, and metering facilities would be located within the existing Sabine Pass...

  13. 77 FR 65546 - Sabine Pass Liquefaction, LLC; Sabine Pass LNG, L.P.; Notice of Petition To Amend Authorizations...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-29

    ... Energy Regulatory Commission Sabine Pass Liquefaction, LLC; Sabine Pass LNG, L.P.; Notice of Petition To... Pass Liquefaction, LLC and Sabine Pass LNG, L.P. (collectively, Sabine Pass), 700 Milam Street, Suite... and operate certain related facilities (Modification Project) at the existing Sabine Pass LNG...

  14. Automated Procedure for Roll Pass Design

    NASA Astrophysics Data System (ADS)

    Lambiase, F.; Langella, A.

    2009-04-01

    The aim of this work has been to develop an automatic roll pass design method, capable of minimizing the number of roll passes. The adoption of artificial intelligence technologies, particularly expert systems, and a hybrid model for the surface profile evaluation of rolled bars, has allowed us to model the search for the minimal sequence with a tree path search. This approach permitted a geometrical optimization of roll passes while allowing automation of the roll pass design process. Moreover, the heuristic nature of the inferential engine contributes a great deal toward reducing search time, thus allowing such a system to be employed for industrial purposes. Finally, this new approach was compared with other recently developed automatic systems to validate and measure possible improvements among them.

  15. Hurricane Sandy -- Pass 1, Oct. 29, 2012

    NASA Video Gallery

    Hurricane Sandy was viewed Monday morning from the International Space Station as it orbited 260 miles above the Atlantic Ocean. Sandy had sustained winds of 90 miles an hour as the station passed ...

  16. Hurricane Sandy -- Pass 2, Oct. 29, 2012

    NASA Video Gallery

    Hurricane Sandy was viewed Monday morning from the International Space Station as it orbited 260 miles above the Atlantic Ocean. Sandy had sustained winds of 90 miles an hour as the station passed ...

  17. Message Passing Framework for Globally Interconnected Clusters

    NASA Astrophysics Data System (ADS)

    Hafeez, M.; Asghar, S.; Malik, U. A.; Rehman, A.; Riaz, N.

    2011-12-01

    In prevailing technology trends it is apparent that the network requirements and technologies will advance in future. Therefore the need of High Performance Computing (HPC) based implementation for interconnecting clusters is comprehensible for scalability of clusters. Grid computing provides global infrastructure of interconnecting clusters consisting of dispersed computing resources over Internet. On the other hand the leading model for HPC programming is Message Passing Interface (MPI). As compared to Grid computing, MPI is better suited for solving most of the complex computational problems. MPI itself is restricted to a single cluster. It does not support message passing over the internet to use the computing resources of different clusters in an optimal way. We propose a model that provides message passing capabilities between parallel applications over the internet. The proposed model is based on Architecture for Java Universal Message Passing (A-JUMP) framework and Enterprise Service Bus (ESB) named as High Performance Computing Bus. The HPC Bus is built using ActiveMQ. HPC Bus is responsible for communication and message passing in an asynchronous manner. Asynchronous mode of communication offers an assurance for message delivery as well as a fault tolerance mechanism for message passing. The idea presented in this paper effectively utilizes wide-area intercluster networks. It also provides scheduling, dynamic resource discovery and allocation, and sub-clustering of resources for different jobs. Performance analysis and comparison study of the proposed framework with P2P-MPI are also presented in this paper.

  18. Symmetrical band-pass loudspeaker systems

    NASA Astrophysics Data System (ADS)

    Matusiak, Grzegorz Piotr

    2001-12-01

    Loudspeaker systems are analyzed in a doctoral dissertation. The dissertation concerns loudspeaker systems, which are known as subwoofers or band-pass loudspeaker systems. Their advantages include: high- quality sound reproduction in the low-frequency range, small dimensions, small nonlinear distortions and the fact that they can be placed anywhere in a room or car. Band-pass loudspeaker systems are used widely in the so- called Home Theatre as well as to provide sound in cinema, theatre, concert, discotheque, opera, operetta, philharmonic and amphitheater halls, at open-air concerts, and so on. Various designs are mass-produced by a large number of manufacturers. The study covers an analysis of band-pass loudspeaker systems to which the frequency transformation, i.e. the reactance transformation, has been applied. Since this is a symmetrical transformation, amplitude frequency responses of the studied band-pass systems are also symmetrical (logarithmic scale of a frequency). As a result, the high-pass loudspeaker system design method, known as the Thiele-Small, Benson analysis, can be employed. The investigations include the formulation of band-pass system equations (fourth, sixth and eighth-order polynomials) and the subsequent derivation of relations for the calculation of system parameters. The obtained results enable the calculation of optimum designs for prescribed alignments, e.g. (Chebyshev) equal-ripple, (Butterworth) maximally flat, or quasi-maximally flat (QB). The analysis covers fourth, sixth and eighth-order symmetrical systems. Eighth-order systems have been divided into three kinds according to three ways of physical realization. The doctoral dissertation includes band-pass loudspeaker systems, which can be designed with active or passive filters or without the filter. Designed systems consist of a loudspeaker whose front of a diaphragm is loaded with a Helmholtz resonator, i.e. an enclosure with a vent, which radiates sound outwards. The back is

  19. Improved multiple-pass Raman spectrometer

    NASA Astrophysics Data System (ADS)

    Kc, Utsav; Silver, Joel A.; Hovde, David C.; Varghese, Philip L.

    2011-08-01

    An improved Raman gain spectrometer for flame measurements of gas temperature and species concentrations is described. This instrument uses a multiple-pass optical cell to enhance the incident light intensity in the measurement volume. The Raman signal is 83 times larger than from a single pass, and the Raman signal-to-noise ratio (SNR) in room-temperature air of 153 is an improvement over that from a single-pass cell by a factor of 9.3 when the cell is operated with 100 passes and the signal is integrated over 20 laser shots. The SNR improvement with the multipass cell is even higher for flame measurements at atmospheric pressure, because detector readout noise is more significant for single-pass measurements when the gas density is lower. Raman scattering is collected and dispersed in a spectrograph with a transmission grating and recorded with a fast gated CCD array detector to help eliminate flame interferences. The instrument is used to record spontaneous Raman spectra from N2, CO2, O2, and CO in a methane--air flame. Curve fits of the recorded Raman spectra to detailed simulations of nitrogen spectra are used to determine the flame temperature from the shapes of the spectral signatures and from the ratio of the total intensities of the Stokes and anti-Stokes signals. The temperatures measured are in good agreement with radiation-corrected thermocouple measurements for a range of equivalence ratios.

  20. 33 CFR 401.31 - Meeting and passing.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Meeting and passing. 401.31... passing. (a) The meeting and passing of vessels shall be governed by the Collision Regulations of Canada..., no vessel shall overtake and pass or attempt to overtake and pass another vessel— (1) In any...

  1. Experimental Investigation of By-pass Transition

    NASA Astrophysics Data System (ADS)

    Sengupta, Tapan; Lim, T. T.; Chattopadhyay, Manojit

    2000-11-01

    By-pass transition, a phenomenon often encountered in nature and engineering devices, is a complex flow instability caused by moving disturbances over bodies. To date this phenomenon is not fully explained. In the present research a controlled experiment is performed to show that the violent breakdown during by-pass transition is dominated by a two-dimensional mechanism and the resultant broadband energy spectrum of the corresponding turbulent flow is excited at the receptivity stage itself by the primary instability. The experiment is conducted in a water tunnel using dye visualisation technique, and the by-pass transition is created by controlled motion of captive vortices. In the presentation, apart from showing video images of the phenomenon, the similarity of the observed events with secondary instability and fully developed turbulent flows will be discussed.

  2. Over-under double-pass interferometer

    NASA Technical Reports Server (NTRS)

    Schindler, R. A. (Inventor)

    1977-01-01

    An over-under double pass interferometer in which the beamsplitter area and thickness can be reduced to conform only with optical flatness considerations was achieved by offsetting the optical center line of one cat's-eye retroreflector relative to the optical center line of the other in order that one split beam be folded into a plane distinct from the other folded split beam. The beamsplitter is made transparent in one area for a first folded beam to be passed to a mirror for doubling back and is made totally reflective in another area for the second folded beam to be reflected to a mirror for doubling back. The two beams thus doubled back are combined in the central, beamsplitting area of the beamsplitting and passed to a detector. This makes the beamsplitter insensitive to minimum thickness requirements and selection of material.

  3. Efficient, Narrow-Pass-Band Optical Filters

    NASA Technical Reports Server (NTRS)

    Sandford, Stephen P.

    1996-01-01

    Optical filters with both narrow pass bands and high efficiencies fabricated to design specifications. Offer tremendous improvements in performance for number of optical (including infrared) systems. In fiber-optic and free-space communication systems, precise frequency discrimination afforded by narrow pass bands of filters provide higher channel capacities. In active and passive remote sensors like lidar and gas-filter-correlation radiometers, increased efficiencies afforded by filters enhance detection of small signals against large background noise. In addition, sizes, weights, and power requirements of many optical and infrared systems reduced by taking advantage of gains in signal-to-noise ratios delivered by filters.

  4. Act on travel passes, 11 May 1989.

    PubMed

    1989-01-01

    This Act provides that every Bulgarian citizen has a right to a travel pass in order freely to enter and leave the country, except for persons with state secrets, minors without parental approval, persons in the midst of legal proceedings or about to serve prison sentences, and persons with certain legal obligations that have not been fulfilled. The Act makes obtaining a pass easier by abolishing the requirement that persons wishing to leave the country prove that they have a certain amount of money for foreign currency. The offense of overstaying the authorized time of travel abroad has been reduced in seriousness and is henceforth punishable by fines set forth in the Act.

  5. House passes RCRA fix by wide margin

    SciTech Connect

    1996-02-07

    The House of Representatives has passed a bill to prevent expensive, court-ordered tightening of the Resource Conservation and Recovery Act`s (RCRA) land-disposal rules. The measure was initiated last March as part of the Clinton Administration`s {open_quotes}reinventing environmental regulation{close_quotes} initiative and was championed by House Republicans. It passed, 402 to 19, drawing overwhelming support from Democrats. CMA president and CEO Fred Webber hailed the bipartisan approach as the right way to legislate. {open_quotes}We hope this bill can serve as a model for Superfund and other pieces of unfinished business,{close_quotes} he says.

  6. 77 FR 277 - Sabine Pass Liquefaction, LLC and Sabine Pass LNG, L.P; Notice of Availability of the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-04

    ... Energy Regulatory Commission Sabine Pass Liquefaction, LLC and Sabine Pass LNG, L.P; Notice of... Sabine Pass LNG, L.P. (collectively referred to as Sabine Pass) in the above-referenced docket. Sabine... exportation of natural gas at the existing Sabine Pass LNG Import Terminal in Cameron Parish, Louisiana....

  7. 78 FR 66909 - Sabine Pass Liquefaction, LLC; Sabine Pass LNG, L.P.; Notice of Application to Amend...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-07

    ... Energy Regulatory Commission Sabine Pass Liquefaction, LLC; Sabine Pass LNG, L.P.; Notice of Application... Sabine Pass Liquefaction, LLC and Sabine Pass LNG, L.P. (collectively, Sabine Pass), 700 Milam Street... No. CP13-2 on August 2, 2013, in order to increase the total LNG production capacity of...

  8. 78 FR 62319 - Golden Pass Products, LLC, Golden Pass Pipeline, LLC; Notice of Intent To Prepare an...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-16

    ... Prepare an Environmental Assessment for the Planned Golden Pass LNG Export Project and Golden Pass Export... operation of the Golden Pass Liquefied Natural Gas (LNG) Project and Golden Pass Export Pipeline Project, collectively called the Golden Pass LNG Export Project (Project) in Texas and Louisiana. The Project has...

  9. 75 FR 68347 - Sabine Pass Liquefaction LLC, and Sabine Pass LNG, L.P.; Notice of Intent To Prepare an...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-05

    ... Energy Regulatory Commission Sabine Pass Liquefaction LLC, and Sabine Pass LNG, L.P.; Notice of Intent To... facilities by Sabine Pass Liquefaction LLC, and Sabine Pass LNG, L.P. (collectively referred to as Sabine... responsibilities. DOE proposes to authorize Sabine Pass Liquefaction, LLC to export liquefied natural gas...

  10. 76 FR 9573 - Sabine Pass Liquefaction, LLC and Sabine Pass LNG, L.P.; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-18

    ... Energy Regulatory Commission Sabine Pass Liquefaction, LLC and Sabine Pass LNG, L.P.; Notice of Application Take notice that on January 31, 2011, Sabine Pass Liquefaction, LLC and Sabine Pass LNG, L.P... (Liquefaction Project) at the existing Sabine Pass LNG Terminal, located in Cameron Parish, Louisiana....

  11. Passing the Bond Issue (with Related Video)

    ERIC Educational Resources Information Center

    Erickson, Paul W.

    2011-01-01

    When a bond referendum comes around for a school district, it often is the culmination of years of planning, strategizing and communicating to the public. Especially in these economic times, passing a building referendum is challenging. Complete transparency among the superintendent, school board and community is essential to communicate the…

  12. 27 CFR 9.88 - Pacheco Pass.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2014-04-01 2014-04-01 false Pacheco Pass. 9.88 Section 9.88 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.88...

  13. Educational Programs for By-Passed Populations.

    ERIC Educational Resources Information Center

    Morgan, Don A., Ed.

    The objective of the symposium from which this document resulted was to give visibility to some worthwhile programs for mobile and "by-passed" populations, in order to allow those in attendance at the symposium and those exposed to the published proceedings to capitalize on what has been learned through these programs. The conference report points…

  14. The Physics of "String Passing through Ice"

    ERIC Educational Resources Information Center

    Mohazzabi, Pirooz

    2011-01-01

    One of the oldest yet interesting experiments related to heat and thermodynamics is placing a string on a block of ice and hanging two masses from the ends of the string. Sometime later, it is discovered that the string has passed through the ice without cutting it in half. A simple explanation of this effect is that the pressure caused by the…

  15. PASS: Creating Physically Active School Systems

    ERIC Educational Resources Information Center

    Ciotto, Carol M.; Fede, Marybeth H.

    2014-01-01

    PASS, a Physically Active School System, is a program by which school districts and schools utilize opportunities for school-based physical activity that enhance overall fitness and cognition, which can be broken down into four integral parts consisting of connecting, communicating, collaborating, and cooperating. There needs to be an…

  16. Message-passing performance of various computers

    SciTech Connect

    Dongarra, J.J.; Dunigan, T.H.

    1996-02-01

    This report compares the performance of different computer systems message passing. Latency and bandwidth are measured on Convex, Cray, IBM, Intel, KSR, Meiko, nCUBE, NEC, SGI, and TMC multiprocessors. Communication performance is contrasted with the computational power of each system. The comparison includes both shared a memory computers as well as networked workstation cluster.

  17. Generalizing Galileo's Passe-Dix Game

    ERIC Educational Resources Information Center

    Hombas, Vassilios

    2012-01-01

    This article shows a generalization of Galileo's "passe-dix" game. The game was born following one of Galileo's [G. Galileo, "Sopra le Scoperte dei Dadi" (Galileo, Opere, Firenze, Barbera, Vol. 8). Translated by E.H. Thorne, 1898, pp. 591-594] explanations on a paradox that occurred in the experiment of tossing three fair "six-sided" dice.…

  18. Message passing with parallel queue traversal

    DOEpatents

    Underwood, Keith D [Albuquerque, NM; Brightwell, Ronald B [Albuquerque, NM; Hemmert, K Scott [Albuquerque, NM

    2012-05-01

    In message passing implementations, associative matching structures are used to permit list entries to be searched in parallel fashion, thereby avoiding the delay of linear list traversal. List management capabilities are provided to support list entry turnover semantics and priority ordering semantics.

  19. HyperPASS, a New Aeroassist Tool

    NASA Technical Reports Server (NTRS)

    Gates, Kristin; McRonald, Angus; Nock, Kerry

    2005-01-01

    A new software tool designed to perform aeroassist studies has been developed by Global Aerospace Corporation (GAC). The Hypersonic Planetary Aeroassist Simulation System (HyperPASS) [1] enables users to perform guided aerocapture, guided ballute aerocapture, aerobraking, orbit decay, or unguided entry simulations at any of six target bodies (Venus, Earth, Mars, Jupiter, Titan, or Neptune). HyperPASS is currently being used for trade studies to investigate (1) aerocapture performance with alternate aeroshell types, varying flight path angle and entry velocity, different gload and heating limits, and angle of attack and angle of bank variations; (2) variable, attached ballute geometry; (3) railgun launched projectile trajectories, and (4) preliminary orbit decay evolution. After completing a simulation, there are numerous visualization options in which data can be plotted, saved, or exported to various formats. Several analysis examples will be described.

  20. Geothermal temperature gradient core drill, Santiam Pass

    SciTech Connect

    Not Available

    1989-01-01

    DOE is proposing to share in the cost of drilling a 3000-ft core hole to evaluate temperature gradients, subsurface geology and the geothermal potential of an area in the Cascade Mountains. The proposed core hole will be located in the Deschutes National Forest in Oregon, near Santiam Pass. The proposed action has been described in the Environmental Assessment (EA) for Geothermal Temperature Gradient Core Drill Santiam Pass Area (No. OR-050-9-51) prepared by the US Bureau of Land Management (BLM). DOE has determined that the BLM EA adequately addresses the impacts of the proposal and is hereby adopting the EA in partial fulfillment of its NEPA responsibilities. Based upon a review of the EA and an independent analysis, DOE has concluded that the proposed corehole drilling project does not constitute a major federal action significantly affecting the quality of the human environment within the meaning of NEPA. Therefore, an environmental impact statement will not be prepared.

  1. Battery Cell By-Pass Circuit

    NASA Technical Reports Server (NTRS)

    Evers, Jeffrey (Inventor); Gelger, Ronald V. (Inventor)

    2001-01-01

    The invention is a circuit and method of limiting the charging current voltage from a power supply net work applied to an individual cell of a plurality of cells making up a battery being charged in series. It is particularly designed for use with batteries that can be damaged by overcharging, such as Lithium-ion type batteries. In detail. the method includes the following steps: 1) sensing the actual voltage level of the individual cell; 2) comparing the actual voltage level of the individual cell with a reference value and providing an error signal representative thereof; and 3) by-passing the charging current around individual cell necessary to keep the individual cell voltage level generally equal a specific voltage level while continuing to charge the remaining cells. Preferably this is accomplished by by-passing the charging current around the individual cell if said actual voltage level is above the specific voltage level and allowing the charging current to the individual cell if the actual voltage level is equal or less than the specific voltage level. In the step of bypassing the charging current, the by-passed current is transferred at a proper voltage level to the power supply. The by-pass circuit a voltage comparison circuit is used to compare the actual voltage level of the individual cell with a reference value and to provide an error signal representative thereof. A third circuit, designed to be responsive to the error signal, is provided for maintaining the individual cell voltage level generally equal to the specific voltage level. Circuitry is provided in the third circuit for bypassing charging current around the individual cell if the actual voltage level is above the specific voltage level and transfers the excess charging current to the power supply net work. The circuitry also allows charging of the individual cell if the actual voltage level is equal or less than the specific voltage level.

  2. Pass-Fail: How Is It Working?

    ERIC Educational Resources Information Center

    Chase, Clinton I.; And Others

    This study investigates the pass/fail (P/F) grading system. A sample of 154 Indiana University students was interviewed. Half of the group, 77 students, had not taken any P/F courses. Of the remaining 77 students, 42% had taken only one P/F course and most of the rest from two to five courses. Results of the student interview questionnaire…

  3. TE and TM pass integrated optic polarizers

    NASA Astrophysics Data System (ADS)

    Madaan, Divya; Kaur, Davinder; Sharma, V. K.; Kapoor, A.

    2016-05-01

    A four layer integrated optical waveguide is studied, in which a high index buffer is used along with the metal cladding. The structure can act both as TE and TM pass polarizer. We have designed it for λ=1.55 µm which corresponds to telecommunication wavelength. TiO2 is used as a buffer layer with Au as metal cladding. When metal clad optical waveguides with a high index buffer layer are used there is periodic coupling between lossless modes of waveguide and the lossy modes supported by high index buffer layer with metal clad. We present theoretical results of the effect of buffer thickness on the mode index and the losses. The TM Pass polarizer with TE and TM losses, 1029.19dB/cm and 59.67dB/cm respectively are obtained. Also, TE Pass polarizer with TM and TE losses 1444.74dB/cm and 238.51dB/cm respectively are obtained.

  4. 20 CFR 416.2099 - Compliance with pass-along.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Compliance with pass-along. 416.2099 Section... pass-along. (a) Information regarding compliance. Any State required to enter into a pass-along... Commissioner's satisfaction that the State is meeting the pass-along requirements. The information...

  5. 12 CFR 560.32 - Pass-through investments.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Pass-through investments. 560.32 Section 560.32... Lending and Investment Powers for Federal Savings Associations § 560.32 Pass-through investments. (a) A federal savings association (“you”) may make pass-through investments. A pass-through investment...

  6. 36 CFR 13.918 - Sable Pass Wildlife Viewing Area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Sable Pass Wildlife Viewing... Preserve General Provisions § 13.918 Sable Pass Wildlife Viewing Area. (a) Entry into the Sable Pass...) The Sable Pass Wildlife Viewing Area means the area within one mile of the shoulder of the Park...

  7. 7 CFR 29.97 - Who shall pass upon appeals.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Who shall pass upon appeals. 29.97 Section 29.97... REGULATIONS TOBACCO INSPECTION Regulations Appeal § 29.97 Who shall pass upon appeals. Appeals shall be passed... Director, two or more appeal inspectors may jointly pass upon an appeal. The Division may authorize...

  8. 30 CFR 56.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Overtravel by-pass switches. 56.19018 Section... Hoisting Hoists § 56.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the... switch is held in the closed position by the hoistman. The overtravel by-pass switch shall...

  9. 30 CFR 57.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Overtravel by-pass switches. 57.19018 Section... Hoisting Hoists § 57.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the... switch is held in the closed position by the hoistman. The overtravel by-pass switch shall...

  10. Generalized electrical analysis of low-pass and high-pass birdcage resonators.

    PubMed

    Pascone, R J; Garcia, B J; Fitzgerald, T M; Vullo, T; Zipagan, R; Cahill, P T

    1991-01-01

    The radio-frequency 'birdcage resonator' has found wide use in MRI/MRS for its field homogeneity and signal-noise characteristics. This paper presents a general analysis, derived from lumped element transmission line theory, of the electrical behavior of unloaded, N-column birdcage resonators applicable to several versions of the basic design including low-pass and high-pass coils. Analytic expressions and computer results are presented for both types of coil describing resonant frequencies, input and characteristic impedances, dispersion relations, pass-bands, resonant peak bandwidth and Q. Theoretical expressions for normalized resonant frequency difference ratios independent of element values and resonator geometry have been developed for generic low- and high-pass coils. Experimental measurements of resonant frequencies were made for six coils, and the average agreement with theoretical predictions was approximately 4%.

  11. The Effectiveness of Heat Exchangers with One Shell Pass and Three Tube Passes.

    DTIC Science & Technology

    1985-06-01

    DOCUMENTATION PAGE READ COSTRUCTIONS 1. REPORT NUMBER 12. GOVT ACCESSION NO. 3. RECIPIENT’S CATALOG NUMBER 4. TITLE (and Subtitle) S. TYPE OF REPORT 6 PERIOD...COVERED 0 The Effectiveness of Heat Exchangers Master’s Thesis; With One Shell Pass and Three Tube June 1985 Passes S. PERFORMING ORG. REPORT NUMBER 7...AUTHORa) 8. CONTRACT OR GRANT NUMBER (.) Mark S. O’Hare . PERFORMING ORGANIZATION NAME AND ADDRESS t0. PROGRAM ELEMENT. PROJECT, TASK AREA & WORK UNIT

  12. Effect of Ball Mass on Dribble, Pass, and Pass Reception in 9-11-Year-Old Boys' Basketball

    ERIC Educational Resources Information Center

    Arias, Jose L.; Argudo, Francisco M.; Alonso, Jose I.

    2012-01-01

    The objective of the study was to analyze the effect of ball mass on dribble, pass, and pass reception in real game situations in 9-11-year-old boys' basketball. Participants were 54 boys identified from six federated teams. The independent variable was ball mass, and dependent variables were number of dribbles, passes, and pass receptions. Three…

  13. Gene-network inference by message passing

    NASA Astrophysics Data System (ADS)

    Braunstein, A.; Pagnani, A.; Weigt, M.; Zecchina, R.

    2008-01-01

    The inference of gene-regulatory processes from gene-expression data belongs to the major challenges of computational systems biology. Here we address the problem from a statistical-physics perspective and develop a message-passing algorithm which is able to infer sparse, directed and combinatorial regulatory mechanisms. Using the replica technique, the algorithmic performance can be characterized analytically for artificially generated data. The algorithm is applied to genome-wide expression data of baker's yeast under various environmental conditions. We find clear cases of combinatorial control, and enrichment in common functional annotations of regulated genes and their regulators.

  14. Probabilistic Algorithm for Sampler Siting (PASS)

    SciTech Connect

    Lorenzetti, David M.; Sohn, Michael D.

    2007-05-29

    PASS (Probabilistic Approach to Sampler Siting) optimizes the placement of samplers in buildings. The program exhaustively checks every sampler-network that can be formed, evaluating against user-supplied simulations of the possible release scenarios. The program identifies the networks that maximize the probablity of detecting a release from among the suite of user-supllied scenarios. The user may specify how many networks to report, in order to provide a number of choices in cases where many networks have very similar behavior.

  15. Design of transimpedance low-pass filters

    NASA Astrophysics Data System (ADS)

    Tan, Lingling; Li, Qiang; Li, Ruijie; Teng, Jianfu

    2013-02-01

    The input of a transimpedance filter is a current signal, while its output is a voltage signal. In this article, a design method for a transimpedance filter is introduced. Also, the topologies and calculation methods of the parameters of three biquadratic transimpedance low-pass (LP) filter circuits are presented in detail, according to the value of Q which is low or medium or high. As for the high-order filter, it can be designed by transimpedance LP biquad section as first stage cascaded with voltage-mode LP filters. Finally, to verify the effectiveness of the design, a design example of a high-order transimpedance LP filter is given.

  16. Generalized communicators in the message passing interface

    SciTech Connect

    Foster, I.; Kesselmman, C.; Snir, M.

    1996-12-31

    We propose extensions to the Message Passing Interface (MPI) that generalize the MPI communicator concept to allow multiple communication endpoints per process, dynamic creation of endpoints, and the transfer of endpoints between processes. The generalized communicator construct can be used to express a wide range of interesting communication structures, including collective communication operations involving multiple threads per process, communications between dynamically created threads, and object- oriented applications in which communications are directed to specific objects. Furthermore. this enriched functionality can be provided in a manner that preserves backward compatibility with MPI. We describe the proposed extensions, illustrate their use with examples, and discuss implementation issues.

  17. ABM Drag_Pass Report Generator

    NASA Technical Reports Server (NTRS)

    Fisher, Forest; Gladden, Roy; Khanampornpan, Teerapat

    2008-01-01

    dragREPORT software was developed in parallel with abmREPORT, which is described in the preceding article. Both programs were built on the capabilities created during that process. This tool generates a drag_pass report that summarizes vital information from the MRO aerobreaking drag_pass build process to facilitate both sequence reviews and provide a high-level summarization of the sequence for mission management. The script extracts information from the ENV, SSF, FRF, SCMFmax, and OPTG files, presenting them in a single, easy-to-check report providing the majority of parameters needed for cross check and verification as part of the sequence review process. Prior to dragReport, all the needed information was spread across a number of different files, each in a different format. This software is a Perl script that extracts vital summarization information and build-process details from a number of source files into a single, concise report format used to aid the MPST sequence review process and to provide a high-level summarization of the sequence for mission management reference. This software could be adapted for future aerobraking missions to provide similar reports, review and summarization information.

  18. Cassini RADARs Penultimate Passes by Titan

    NASA Astrophysics Data System (ADS)

    Wall, Stephen D.; Cassini RADAR Science Team

    2016-10-01

    The Cassini spacecraft will be in its final year of operation as you read this abstract. The RADAR instrument will observe Titan on passes that occur (or occurred) June 27 (T120), July 25 (T121) and April 22, 2017 (T126), all including SAR imaging. T120 SAR, the only pass received at this writing, has revealed what is arguably the best example of Labrynthic terrain, a unit previously identified on about 2% of the observed surface of Titan (Lopes et al., 2016); extended our observations of "cookie cutter lakes" seen in SAR the very dark area described by Griffith et al (2012), and given added context to the equatorial wind-streak features (Malaska, 2016). The T121 SAR swath promises similar exciting data as it observes Hotei Regio, an area previously thought to be a candidate cryovolcano; Tui Regio (Barnes et al., 2006); and a last look at Xanadu's eastern flanks. We will review all new findings on T120 and T121 and also preview T126 SAR, where we will get a last look at the northern seas, including Titan's "Magic Island" (Hofgartner et al., 2015).This work was carried out at the Jet Propulsion Laboratory, California Insititue of Technology, under a contract with the National Aeronautics and Space Administration.

  19. Enhanced transmittance of a dual pass-band metamaterial filter

    NASA Astrophysics Data System (ADS)

    Wang, XiaoZhi; Zhu, Honghui; Liu, Zhigang

    2017-03-01

    A broad pass-band metamaterial-based optical filter is experimentally and numerically studied. The designed structure consists of periodically arranged composite metallic arrays and dielectric layer that exhibits transmission responses composed of two flat pass-bands. The coupling of localized surface plasmon (LSP) modes results in the low-frequency pass-band, while the internal surface plasmon polaritons (ISPPs) between the upper and lower metal layers leads to the high-frequency pass-band. Structural parameters (L and R) are experimentally considered from the viewpoint of exploiting their effects on the pass-bands and resonance frequencies. The bandwidths of these pass-bands both can reach to maximums by optimization of these structural parameters. In addition, the two pass-bands can be modulated to be a single pass-band with a bandwidth of 10.7 THz by optimizing L and R simultaneously.

  20. Two antenna, two pass interferometric synthetic aperture radar

    DOEpatents

    Martinez, Ana; Doerry, Armin W.; Bickel, Douglas L.

    2005-06-28

    A multi-antenna, multi-pass IFSAR mode utilizing data driven alignment of multiple independent passes can combine the scaling accuracy of a two-antenna, one-pass IFSAR mode with the height-noise performance of a one-antenna, two-pass IFSAR mode. A two-antenna, two-pass IFSAR mode can accurately estimate the larger antenna baseline from the data itself and reduce height-noise, allowing for more accurate information about target ground position locations and heights. The two-antenna, two-pass IFSAR mode can use coarser IFSAR data to estimate the larger antenna baseline. Multi-pass IFSAR can be extended to more than two (2) passes, thereby allowing true three-dimensional radar imaging from stand-off aircraft and satellite platforms.

  1. MPICH. Portable Implementation of the Standard Message Passing Interface

    SciTech Connect

    Gropp, W.; Lusk, E.; Doss, N.; Skjellum, A.

    1992-12-01

    MPICH is a portable implementation of the MPI Message Passing Interface standard. A general-purpose library, it contains routines with which to write message-passing programs for a variety of parallell computers and workstation networks.

  2. CT reconstruction via denoising approximate message passing

    NASA Astrophysics Data System (ADS)

    Perelli, Alessandro; Lexa, Michael A.; Can, Ali; Davies, Mike E.

    2016-05-01

    In this paper, we adapt and apply a compressed sensing based reconstruction algorithm to the problem of computed tomography reconstruction for luggage inspection. Specifically, we propose a variant of the denoising generalized approximate message passing (D-GAMP) algorithm and compare its performance to the performance of traditional filtered back projection and to a penalized weighted least squares (PWLS) based reconstruction method. D-GAMP is an iterative algorithm that at each iteration estimates the conditional probability of the image given the measurements and employs a non-linear "denoising" function which implicitly imposes an image prior. Results on real baggage show that D-GAMP is well-suited to limited-view acquisitions.

  3. The Physics After School Special (PASS) Program

    NASA Astrophysics Data System (ADS)

    Anderson, James; Dunham, Hardin; Sauncy, Toni

    2012-10-01

    The Physics After School Special program, or PASS program, funded by the Marsh White award, was a collaborative enrichment program between Angelo State University's SPS chapter and the local YMCA. The overall goal of this program was to educate young children in physical concepts, educate through hands on activities, to build a mentor-mentee relationship between the children and our SPS volunteers, and to encourage interest in scientific fields. Originally planned to for second to fifth grade students the program was implemented with kindergarten to fourth grade students. This proved to challenge the curriculum but adjustments were made to become more suitable to the age group. We present the program specifics and share results of this outreach program.

  4. 30 CFR 57.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 1 2014-07-01 2014-07-01 false Overtravel by-pass switches. 57.19018 Section... Hoisting Hoists § 57.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when...

  5. 30 CFR 56.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 1 2013-07-01 2013-07-01 false Overtravel by-pass switches. 56.19018 Section... Hoisting Hoists § 56.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when...

  6. 30 CFR 56.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 1 2014-07-01 2014-07-01 false Overtravel by-pass switches. 56.19018 Section... Hoisting Hoists § 56.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when...

  7. 30 CFR 57.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 1 2013-07-01 2013-07-01 false Overtravel by-pass switches. 57.19018 Section... Hoisting Hoists § 57.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when...

  8. 30 CFR 56.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 1 2012-07-01 2012-07-01 false Overtravel by-pass switches. 56.19018 Section... Hoisting Hoists § 56.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when...

  9. 30 CFR 57.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 1 2012-07-01 2012-07-01 false Overtravel by-pass switches. 57.19018 Section... Hoisting Hoists § 57.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when...

  10. 14 CFR 223.4 - Transferability of passes.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Transferability of passes. 223.4 Section 223.4 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION... Transferability of passes. Any pass authorizing free or reduced-rate transportation issued by a carrier may...

  11. 34 CFR 300.190 - By-pass-general.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false By-pass-general. 300.190 Section 300.190 Education... DISABILITIES State Eligibility By-Pass for Children in Private Schools § 300.190 By-pass—general. (a) If, on... Secretary implements a by-pass. (Authority: 20 U.S.C. 1412(f)(1))...

  12. 47 CFR 6.9 - Information pass through.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Information pass through. 6.9 Section 6.9... Entities Do? § 6.9 Information pass through. Telecommunications equipment and customer premises equipment shall pass through cross-manufacturer, non-proprietary, industry-standard codes, translation...

  13. 20 CFR 631.18 - Federal by-pass authority.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Federal by-pass authority. 631.18 Section 631... Procedures § 631.18 Federal by-pass authority. (a) In the event that a State fails to submit a biennial State... Secretary's intent to exercise by-pass authority and an opportunity to request and to receive a...

  14. 36 CFR 72.37 - Pass-through funding.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Pass-through funding. 72.37... and Innovation § 72.37 Pass-through funding. Section 1006(a)(1) of the Act states that at the... UPARR funds may be passed through for Recovery Action Program grants. The decision on whether or not...

  15. 36 CFR 1193.37 - Information pass through.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Information pass through... § 1193.37 Information pass through. Telecommunications equipment and customer premises equipment shall pass through cross-manufacturer, non-proprietary, industry-standard codes, translation...

  16. 78 FR 18479 - Drawbridge Operation Regulations; Pass Manchac, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-27

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulations; Pass Manchac, LA AGENCY: Coast Guard... automated bascule span drawbridge across Pass Manchac, mile 6.7, at Manchac, between St. John and Tangipahoa... Pass Manchac, mile 6.7, at Manchac, between St. John and Tangipahoa Parishes, Louisiana. The bridge...

  17. 33 CFR 401.42 - Passing hand lines.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Passing hand lines. 401.42... OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.42 Passing hand lines. (a) At locks, hand lines shall be secured to the mooring lines and passed as follows: (1)...

  18. 9 CFR 381.79 - Passing of carcasses and parts.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Passing of carcasses and parts. 381.79... Carcasses and Parts § 381.79 Passing of carcasses and parts. Each carcass and all organs and other parts of carcasses which are found to be not adulterated shall be passed for human food....

  19. 48 CFR 652.237-71 - Identification/Building Pass.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Pass. 652.237-71 Section 652.237-71 Federal Acquisition Regulations System DEPARTMENT OF STATE CLAUSES... Identification/Building Pass. As prescribed in 637.110(b), insert the following clause. Identification/Building Pass (APR 2004) (a) Contractors working in domestic facilities who already possess a security...

  20. 47 CFR 7.9 - Information pass through.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Information pass through. 7.9 Section 7.9... EQUIPMENT BY PEOPLE WITH DISABILITIES Obligations-What Must Covered Entities Do? § 7.9 Information pass through. Telecommunications equipment and customer premises equipment shall pass through...

  1. 33 CFR 80.825 - Mississippi Passes, LA.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Mississippi Passes, LA. 80.825... NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.825 Mississippi Passes, LA. (a) A line drawn...., longitude 89°27.1′ W.; thence to the seaward extremity of the Southwest Pass West Jetty located at...

  2. 33 CFR 401.42 - Passing hand lines.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Passing hand lines. 401.42... OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.42 Passing hand lines. (a) At locks, hand lines shall be secured to the mooring lines and passed as follows: (1)...

  3. 30 CFR 56.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 1 2011-07-01 2011-07-01 false Overtravel by-pass switches. 56.19018 Section... Hoisting Hoists § 56.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when...

  4. 30 CFR 57.19018 - Overtravel by-pass switches.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 1 2011-07-01 2011-07-01 false Overtravel by-pass switches. 57.19018 Section... Hoisting Hoists § 57.19018 Overtravel by-pass switches. When an overtravel by-pass switch is installed, the switch shall function so as to allow the conveyance to be moved through the overtravel position when...

  5. 33 CFR 80.825 - Mississippi Passes, LA.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Mississippi Passes, LA. 80.825... NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.825 Mississippi Passes, LA. (a) A line drawn... 28°54.5′ N., longitude 89°26.1′ W. (d) A line drawn from Mississippi River South Pass East...

  6. Purdue Academic Student Scheduling. PASS. Goals, Guidelines, and Operations.

    ERIC Educational Resources Information Center

    Abell, Victor A.

    PASS produces student schedules. This manual offers an operational record of the PASS system, and describes its structure within the total registration process. The primary goals of PASS, a "choice-course" system, are to satisfy student program requirements and equally distribute class load through the master schedule from a total…

  7. Astor Pass Seismic Surveys Preliminary Report

    SciTech Connect

    Louie, John; Pullammanappallil, Satish; Faulds, James; Eisses, Amy; Kell, Annie; Frary, Roxanna; Kent, Graham

    2011-08-05

    In collaboration with the Pyramid Lake Paiute Tribe (PLPT), the University of Nevada, Reno (UNR) and Optim re-processed, or collected and processed, over 24 miles of 2d seismic-reflection data near the northwest corner of Pyramid Lake, Nevada. The network of 2d land surveys achieved a near-3d density at the Astor Pass geothermal prospect that the PLPT drilled during Nov. 2010 to Feb. 2011. The Bureau of Indian Affairs funded additional seismic work around the Lake, and an extensive, detailed single-channel marine survey producing more than 300 miles of section, imaging more than 120 ft below the Lake bottom. Optim’s land data collection utilized multiple heavy vibrators and recorded over 200 channels live, providing a state-of-the-art reflection-refraction data set. After advanced seismic analysis including first-arrival velocity optimization and prestack depth migration, the 2d sections show clear fault-plane reflections, in some areas as deep as 4000 ft, tying to distinct terminations of the mostly volcanic stratigraphy. Some lines achieved velocity control to 3000 ft depth; all lines show reflections and terminations to 5000 ft depth. Three separate sets of normal faults appear in an initial interpretation of fault reflections and stratigraphic terminations, after loading the data into the OpendTect 3d seismic visualization system. Each preliminary fault set includes a continuous trace more than 3000 ft long, and a swarm of short fault strands. The three preliminary normal-fault sets strike northerly with westward dip, northwesterly with northeast dip, and easterly with north dip. An intersection of all three fault systems documented in the seismic sections at the end of Phase I helped to locate the APS-2 and APS-3 slimholes. The seismic sections do not show the faults connected to the Astor Pass tufa spire, suggesting that we have imaged mostly Tertiary-aged faults. We hypothesize that the Recent, active faults that produced the tufa through hotspring

  8. Multi-Pass Quadrupole Mass Analyzer

    NASA Technical Reports Server (NTRS)

    Prestage, John D.

    2013-01-01

    Analysis of the composition of planetary atmospheres is one of the most important and fundamental measurements in planetary robotic exploration. Quadrupole mass analyzers (QMAs) are the primary tool used to execute these investigations, but reductions in size of these instruments has sacrificed mass resolving power so that the best present-day QMA devices are still large, expensive, and do not deliver performance of laboratory instruments. An ultra-high-resolution QMA was developed to resolve N2 +/CO+ by trapping ions in a linear trap quadrupole filter. Because N2 and CO are resolved, gas chromatography columns used to separate species before analysis are eliminated, greatly simplifying gas analysis instrumentation. For highest performance, the ion trap mode is used. High-resolution (or narrow-band) mass selection is carried out in the central region, but near the DC electrodes at each end, RF/DC field settings are adjusted to allow broadband ion passage. This is to prevent ion loss during ion reflection at each end. Ions are created inside the trap so that low-energy particles are selected by low-voltage settings on the end electrodes. This is beneficial to good mass resolution since low-energy particles traverse many cycles of the RF filtering fields. Through Monte Carlo simulations, it is shown that ions are reflected at each end many tens of times, each time being sent back through the central section of the quadrupole where ultrahigh mass filtering is carried out. An analyzer was produced with electrical length orders of magnitude longer than its physical length. Since the selector fields are sized as in conventional devices, the loss of sensitivity inherent in miniaturizing quadrupole instruments is avoided. The no-loss, multi-pass QMA architecture will improve mass resolution of planetary QMA instruments while reducing demands on the RF electronics for high-voltage/high-frequency production since ion transit time is no longer limited to a single pass. The

  9. Operator pencil passing through a given operator

    NASA Astrophysics Data System (ADS)

    Biggs, A.; Khudaverdian, H. M.

    2013-12-01

    Let Δ be a linear differential operator acting on the space of densities of a given weight λ0 on a manifold M. One can consider a pencil of operators {widehat{Pi }}(Δ )=lbrace Δ _{λ }rbrace passing through the operator Δ such that any Δλ is a linear differential operator acting on densities of weight λ. This pencil can be identified with a linear differential operator widehat{Δ } acting on the algebra of densities of all weights. The existence of an invariant scalar product in the algebra of densities implies a natural decomposition of operators, i.e., pencils of self-adjoint and anti-self-adjoint operators. We study lifting maps that are on one hand equivariant with respect to divergenceless vector fields, and, on the other hand, with values in self-adjoint or anti-self-adjoint operators. In particular, we analyze the relation between these two concepts, and apply it to the study of diff (M)-equivariant liftings. Finally, we briefly consider the case of liftings equivariant with respect to the algebra of projective transformations and describe all regular self-adjoint and anti-self-adjoint liftings. Our constructions can be considered as a generalisation of equivariant quantisation.

  10. Iterative pass optimization of sequence data

    NASA Technical Reports Server (NTRS)

    Wheeler, Ward C.

    2003-01-01

    The problem of determining the minimum-cost hypothetical ancestral sequences for a given cladogram is known to be NP-complete. This "tree alignment" problem has motivated the considerable effort placed in multiple sequence alignment procedures. Wheeler in 1996 proposed a heuristic method, direct optimization, to calculate cladogram costs without the intervention of multiple sequence alignment. This method, though more efficient in time and more effective in cladogram length than many alignment-based procedures, greedily optimizes nodes based on descendent information only. In their proposal of an exact multiple alignment solution, Sankoff et al. in 1976 described a heuristic procedure--the iterative improvement method--to create alignments at internal nodes by solving a series of median problems. The combination of a three-sequence direct optimization with iterative improvement and a branch-length-based cladogram cost procedure, provides an algorithm that frequently results in superior (i.e., lower) cladogram costs. This iterative pass optimization is both computation and memory intensive, but economies can be made to reduce this burden. An example in arthropod systematics is discussed. c2003 The Willi Hennig Society. Published by Elsevier Science (USA). All rights reserved.

  11. Iterative pass optimization of sequence data.

    PubMed

    Wheeler, Ward C

    2003-06-01

    The problem of determining the minimum-cost hypothetical ancestral sequences for a given cladogram is known to be NP-complete. This "tree alignment" problem has motivated the considerable effort placed in multiple sequence alignment procedures. Wheeler in 1996 proposed a heuristic method, direct optimization, to calculate cladogram costs without the intervention of multiple sequence alignment. This method, though more efficient in time and more effective in cladogram length than many alignment-based procedures, greedily optimizes nodes based on descendent information only. In their proposal of an exact multiple alignment solution, Sankoff et al. in 1976 described a heuristic procedure--the iterative improvement method--to create alignments at internal nodes by solving a series of median problems. The combination of a three-sequence direct optimization with iterative improvement and a branch-length-based cladogram cost procedure, provides an algorithm that frequently results in superior (i.e., lower) cladogram costs. This iterative pass optimization is both computation and memory intensive, but economies can be made to reduce this burden. An example in arthropod systematics is discussed.

  12. How My Program Passed the Turing Test

    NASA Astrophysics Data System (ADS)

    Humphrys, Mark

    In 1989, the author put an ELIZA-like chatbot on the Internet. The conversations this program had can be seen - depending on how one defines the rules (and how seriously one takes the idea of the test itself) - as a passing of the Turing Test. This is the first time this event has been properly written. This chatbot succeeded due to profanity, relentless aggression, prurient queries about the user, and implying that they were a liar when they responded. The element of surprise was also crucial. Most chatbots exist in an environment where people expectto find some bots among the humans. Not this one. What was also novel was the onlineelement. This was certainly one of the first AI programs online. It seems to have been the first (a) AI real-time chat program, which (b) had the element of surprise, and (c) was on the Internet. We conclude with some speculation that the future of all of AI is on the Internet, and a description of the "World- Wide-Mind" project that aims to bring this about.

  13. Tracking particles by passing messages between images

    SciTech Connect

    Chertkov, Michael; Kroc, Lukas; Zdeborova, Lenka; Krakala, Florent; Vergassola, M

    2009-01-01

    Methods to extract information from the tracking of mobile objects/particles have broad interest in biological and physical sciences. Techniques based on the simple criterion of proximity in time-consecutive snapshots are useful to identify the trajectories of the particles. However, they become problematic as the motility and/or the density of the particles increases because of the uncertainties on the trajectories that particles have followed during the acquisition time of the images. Here, we report efficient methods for learning parameters of the dynamics of the particles from their positions in time-consecutive images. Our algorithm belongs to the class of message-passing algorithms, also known in computer science, information theory and statistical physics under the name of Belief Propagation (BP). The algorithm is distributed, thus allowing parallel implementation suitable for computations on multiple machines without significant inter-machine overhead. We test our method on the model example of particle tracking in turbulent flows, which is particularly challenging due to the strong transport that those flows produce. Our numerical experiments show that the BP algorithm compares in quality with exact Markov Chain Monte-Carlo algorithms, yet BP is far superior in speed. We also suggest and analyze a random-distance model that provides theoretical justification for BP accuracy. Methods developed here systematically formulate the problem of particle tracking and provide fast and reliable tools for its extensive range of applications.

  14. Airborne Radar Interferometric Repeat-Pass Processing

    NASA Technical Reports Server (NTRS)

    Hensley, Scott; Michel, Thierry R.; Jones, Cathleen E.; Muellerschoen, Ronald J.; Chapman, Bruce D.; Fore, Alexander; Simard, Marc; Zebker, Howard A.

    2011-01-01

    Earth science research often requires crustal deformation measurements at a variety of time scales, from seconds to decades. Although satellites have been used for repeat-track interferometric (RTI) synthetic-aperture-radar (SAR) mapping for close to 20 years, RTI is much more difficult to implement from an airborne platform owing to the irregular trajectory of the aircraft compared with microwave imaging radar wavelengths. Two basic requirements for robust airborne repeat-pass radar interferometry include the ability to fly the platform to a desired trajectory within a narrow tube and the ability to have the radar beam pointed in a desired direction to a fraction of a beam width. Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) is equipped with a precision auto pilot developed by NASA Dryden that allows the platform, a Gulfstream III, to nominally fly within a 5 m diameter tube and with an electronically scanned antenna to position the radar beam to a fraction of a beam width based on INU (inertial navigation unit) attitude angle measurements.

  15. Anon-Pass: Practical Anonymous Subscriptions

    PubMed Central

    Lee, Michael Z.; Dunn, Alan M.; Katz, Jonathan; Waters, Brent; Witchel, Emmett

    2014-01-01

    We present the design, security proof, and implementation of an anonymous subscription service. Users register for the service by providing some form of identity, which might or might not be linked to a real-world identity such as a credit card, a web login, or a public key. A user logs on to the system by presenting a credential derived from information received at registration. Each credential allows only a single login in any authentication window, or epoch. Logins are anonymous in the sense that the service cannot distinguish which user is logging in any better than random guessing. This implies unlinkability of a user across different logins. We find that a central tension in an anonymous subscription service is the service provider’s desire for a long epoch (to reduce server-side computation) versus users’ desire for a short epoch (so they can repeatedly “re-anonymize” their sessions). We balance this tension by having short epochs, but adding an efficient operation for clients who do not need unlinkability to cheaply re-authenticate themselves for the next time period. We measure performance of a research prototype of our protocol that allows an independent service to offer anonymous access to existing services. We implement a music service, an Android-based subway-pass application, and a web proxy, and show that adding anonymity adds minimal client latency and only requires 33 KB of server memory per active user. PMID:24504081

  16. Operator pencil passing through a given operator

    SciTech Connect

    Biggs, A. E-mail: adam.biggs@student.manchester.ac.uk; Khudaverdian, H. M. E-mail: adam.biggs@student.manchester.ac.uk

    2013-12-15

    Let Δ be a linear differential operator acting on the space of densities of a given weight λ{sub 0} on a manifold M. One can consider a pencil of operators Π-circumflex(Δ)=(Δ{sub λ}) passing through the operator Δ such that any Δ{sub λ} is a linear differential operator acting on densities of weight λ. This pencil can be identified with a linear differential operator Δ-circumflex acting on the algebra of densities of all weights. The existence of an invariant scalar product in the algebra of densities implies a natural decomposition of operators, i.e., pencils of self-adjoint and anti-self-adjoint operators. We study lifting maps that are on one hand equivariant with respect to divergenceless vector fields, and, on the other hand, with values in self-adjoint or anti-self-adjoint operators. In particular, we analyze the relation between these two concepts, and apply it to the study of diff (M)-equivariant liftings. Finally, we briefly consider the case of liftings equivariant with respect to the algebra of projective transformations and describe all regular self-adjoint and anti-self-adjoint liftings. Our constructions can be considered as a generalisation of equivariant quantisation.

  17. To pass or not to pass: more a question of body orientation than visual cues.

    PubMed

    Bourrelly, A; Vercher, J-L; Bringoux, L

    2014-01-01

    This study investigated the influence of pitch body tilt on judging the possibility of passing under high obstacles in the presence of an illusory horizontal self-motion. Seated subjects tilted at various body orientations were asked to estimate the possibility of passing under a projected bar (i.e., a parking barrier), while imagining a forward whole-body displacement normal to gravity. This task was performed under two visual conditions, providing either no visual surroundings or a translational horizontal optic flow that stopped just before the barrier appeared. The results showed a main overestimation of the possibility of passing under the bar in both cases and most importantly revealed a strong influence of body orientation despite the visual specification of horizontal self-motion by optic flow (i.e., both visual conditions yielded a comparable body tilt effect). Specifically, the subjective passability was proportionally deviated towards the body tilt by 46% of its magnitude when facing a horizontal optic flow and 43% without visual surroundings. This suggests that the egocentric attraction exerted by body tilt when referring the subjective passability to horizontal self-motion still persists even when anchoring horizontally related visual cues are displayed. These findings are discussed in terms of interaction between spatial references. The link between the reliability of available sensory inputs and the weight attributed to each reference is also addressed.

  18. Portsmouth Atmospheric Science School (PASS) Project

    NASA Technical Reports Server (NTRS)

    Coleman, Clarence D.; Hathaway, Roger (Technical Monitor)

    2002-01-01

    The Portsmouth Atmospheric Science School Project (PASS) Project was granted a one-year no cost extension for 2001-2002. In year three of the project, objectives and strategies were modified based on the previous year-end evaluation. The recommendations were incorporated and the program was replicated within most of the remaining elementary schools in Portsmouth, Virginia and continued in the four middle schools. The Portsmouth Atmospheric Science School Project is a partnership, which includes Norfolk State University, Cooperating Hampton Roads Organizations for Minorities in Engineering (CHROME), NASA Langley Research Center, and the City of Portsmouth, Virginia Public Schools. The project seeks to strengthen the knowledge of Portsmouth Public Schools students in the field of atmospheric sciences and enhance teacher awareness of hands on activities in the atmospheric sciences. The project specifically seeks to: 1) increase the interest and participation of elementary and middle school students in science and mathematics; 2) strengthen existing science programs; and 3) facilitate greater achievement in core subjects, which are necessary for math, science, and technical careers. Emphasis was placed on providing training activities, materials and resources for elementary students (grades 3 - 5) and middle school students (grades 6 - 8), and teachers through a CHROME club structure. The first year of the project focused on introducing elementary students to concepts and activities in atmospheric science. Year two of the project built on the first year's activities and utilizes advanced topics and activities appropriate for middle school students. During the third year of the project, in addition to the approaches used in years one and two, emphasis was placed on activities that enhanced the Virginia Standards of Learning (SOL).

  19. Chelyabinsk fireball and Dyatlov pass tragedy

    NASA Astrophysics Data System (ADS)

    Kochemasov, G. G.

    2013-09-01

    The Chelyabinsk bolide as well as the Kunashak meteorite in 1949 (Fig. 3, black square) hit ground in ectonically peculiar place in the Ural Mountains. The main explosion was followed by a series of weaker bangs. The long Uralian fold belt (Pz) separates two subsectors (1 & 2, Fig. 1) of the Eurasian sector (1+2) of the Eastern hemisphere sectoral structure (Fig. 1). At the Pamirs-Hindukush massif (the "Pamirs' cross") meet four tectonic sectors of this structure: two opposite differently uplifted (Africa-Mediterranean ++ and Asian +) and separating them two opposite differently subsided (Eurasian - and Indooceanic - -). Tectonic bisectors divide the sectors into two differently tectonically elevated subsectors. The Ural Mountains is one of these bisectors dividing the somewhat risen East-European subsector and the relatively fallen West-Siberian one. Even more important is the sharp tectonic boundary between subsided Eurasian sector and uplifted Asian one (between 2 and 3, Fig. 1). Fig. 3 shows distribution of electrophonic bolides over USSR [1]. Observations numbers are in circles. The total of 343 observations is distributed at relevant districts; accompanied meteorites were found only in 23-24 cases; in the chart are excluded background values of 1-2 observations per district. Two areas are obviously anomalous. These of the Urals, and the Eurasia-Asia sectoral contact (Novosibirsk - Yenisei R. - Tunguska). A location in the long Uralian belt is determined by its intersection with the Timan fold belt coming from the northwest (Fig. 3). The catastrophic Dyatlov pass where nine people mysteriously died at once occurs there (triangle in Fig. 3). Mancy aborigines know this place as deadly where killing white shining spheres appear. Moreover this belt intersection is well known among hunters for UFO as the Permian triangle (Fig. 2). They meet there to observe unusual atmospheric shining and other anomalous phenomena. In the Yenisei-Tunguska-Baikal region lightning

  20. The Single Pass Multi-component Harvester

    SciTech Connect

    Reed Hoskinson; John R. Hess

    2004-08-01

    collection must be economically advantageous to the producer. To do all that, a single pass multi-component harvester system is most desirable. Results from our first prototype suggest that current combines probably do adequate threshing and that a separate chassis can be developed that does additional separation and that is economically feasible.

  1. 60. Adney Gap. View of curvilinear alignment of parkway passing ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    60. Adney Gap. View of curvilinear alignment of parkway passing through agricultural lease lands. - Blue Ridge Parkway, Between Shenandoah National Park & Great Smoky Mountains, Asheville, Buncombe County, NC

  2. 12 CFR 560.32 - Pass-through investments.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 5 2011-01-01 2011-01-01 false Pass-through investments. 560.32 Section 560.32 Banks and Banking OFFICE OF THRIFT SUPERVISION, DEPARTMENT OF THE TREASURY LENDING AND INVESTMENT Lending and Investment Powers for Federal Savings Associations § 560.32 Pass-through investments. (a)...

  3. 12 CFR 560.32 - Pass-through investments.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 6 2014-01-01 2012-01-01 true Pass-through investments. 560.32 Section 560.32... loans). (b) You may make a pass-through investment without prior notice to OTS if all of the following... in connection with the granting of a request by a savings association within the meaning of 12...

  4. 49 CFR 383.135 - Passing knowledge and skills tests.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 5 2014-10-01 2014-10-01 false Passing knowledge and skills tests. 383.135... skills tests. (a) Knowledge tests. (1) To achieve a passing score on each of the knowledge tests, a... than 80 percent correct) must not be issued a Group A CLP or CDL. (b) Skills Tests. (1) To achieve...

  5. 49 CFR 383.135 - Passing knowledge and skills tests.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 5 2012-10-01 2012-10-01 false Passing knowledge and skills tests. 383.135... skills tests. (a) Knowledge tests. (1) To achieve a passing score on each of the knowledge tests, a... than 80 percent correct) must not be issued a Group A CLP or CDL. (b) Skills Tests. (1) To achieve...

  6. Efficient Single-Pass Index Construction for Text Databases.

    ERIC Educational Resources Information Center

    Heinz, Steffen; Zobel, Justin

    2003-01-01

    Discusses index construction for text collections, reviews principal approaches to inverted indexes, analyzes their theoretical cost, and presents experimental results of the use of a single-pass inversion method on Web document collections. Shows that the single-pass approach is faster and does not require the complete vocabulary of the indexed…

  7. 49 CFR 383.135 - Minimum passing scores.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false Minimum passing scores. 383.135 Section 383.135... STANDARDS; REQUIREMENTS AND PENALTIES Tests § 383.135 Minimum passing scores. (a) The driver applicant must correctly answer at least 80 percent of the questions on each knowledge test in order to achieve a...

  8. 33 CFR 401.36 - Order of passing through.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Order of passing through. 401.36 Section 401.36 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT... passing through. Vessels shall advance to a lock in the order instructed by the traffic controller....

  9. 33 CFR 117.267 - Big Carlos Pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Big Carlos Pass. 117.267 Section 117.267 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Florida § 117.267 Big Carlos Pass. The draw of...

  10. 33 CFR 117.436 - Chef Menteur Pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Chef Menteur Pass. 117.436 Section 117.436 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.436 Chef Menteur Pass. The draw of...

  11. 33 CFR 117.499 - Tante Phine Pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Tante Phine Pass. 117.499 Section 117.499 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.499 Tante Phine Pass. The draw of...

  12. 20 CFR 416.2096 - Basic pass-along rules.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Basic pass-along rules. 416.2096 Section 416..., BLIND, AND DISABLED State Supplementation Provisions; Agreement; Payments § 416.2096 Basic pass-along..., unless the State furnishes us satisfactory evidence to the contrary. (b) Meeting the...

  13. 24 CFR 3286.509 - Reinspection upon failure to pass.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Reinspection upon failure to pass. 3286.509 Section 3286.509 Housing and Urban Development Regulations Relating to Housing and Urban...-Administered States § 3286.509 Reinspection upon failure to pass. (a) Procedures for failed inspection. If...

  14. Teaching Strategies for the Forearm Pass in Volleyball

    ERIC Educational Resources Information Center

    Casebolt, Kevin; Zhang, Peng; Brett, Christine

    2014-01-01

    This article shares teaching strategies for the forearm pass in the game of volleyball and identifies how they will help students improve their performance and development of forearm passing skills. The article also provides an assessment rubric to facilitate student understanding of the skill.

  15. 20 CFR 631.38 - State by-pass authority.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false State by-pass authority. 631.38 Section 631.38 Employees' Benefits EMPLOYMENT AND TRAINING ADMINISTRATION, DEPARTMENT OF LABOR PROGRAMS UNDER TITLE III OF THE JOB TRAINING PARTNERSHIP ACT State Administration § 631.38 State by-pass authority....

  16. 75 FR 43897 - FM TABLE OF ALLOTMENTS, GRANTS PASS, OREGON

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-27

    ... COMMISSION 47 CFR Part 73 FM TABLE OF ALLOTMENTS, GRANTS PASS, OREGON AGENCY: Federal Communications Commission ACTION: Proposed rule. SUMMARY: This document sets forth a proposal to amend the FM Table of... the allotment of FM Channel 257A as the second commercial allotment at Grants Pass, Oregon....

  17. 33 CFR 80.825 - Mississippi Passes, LA.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Mississippi Passes, LA. 80.825 Section 80.825 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.825 Mississippi Passes, LA. (a) A line...

  18. 33 CFR 80.825 - Mississippi Passes, LA.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Mississippi Passes, LA. 80.825 Section 80.825 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.825 Mississippi Passes, LA. (a) A line...

  19. 33 CFR 80.825 - Mississippi Passes, LA.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Mississippi Passes, LA. 80.825 Section 80.825 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.825 Mississippi Passes, LA. (a) A line...

  20. 22 CFR 9b.5 - Temporary Department of State press building passes.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... passes. 9b.5 Section 9b.5 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.5 Temporary Department of State press building passes. A media... pass valid for one day....

  1. Physical and hydrologic characteristics of Matlacha Pass, southwestern Florida

    SciTech Connect

    Kane, R.L. ); Russell, G.M. )

    1994-03-01

    Matlacha Pass is part of the connected inshore waters of the Charlotte Harbor estuary in southwestern Florida. Bathymetry indicates that depths in the main channel of the pass range from 4 to 14 feet below sea level. The channel averages about 8 feet deep in the northern part of the pass and about 5 feet deep in the southern part. Additionally, depths average about 4 feet in a wide section of the middle of the pass and about 2 feet along the mangrove swamps near the shoreline. Tidal flow within Matlacha Pass varies depending on aquatic vegetation densities, oyster beds, and tidal flats. Surface-water runoff occurs primarily during the wet season (May to September), with most of the flow entering the Matlacha Pass through two openings in the spreader canal system near the city of Matlacha. Freshwater flow into the pass from the north Cape Coral spreader canal system averaged 113 cubic feet per second from October 1987 to September 1992. Freshwater inflow from the Aries Canal of the south Cape Coral spreader canal system averaged 14.1 cubic feet per second from October 1989 to September 1992. Specific conductance throughout Matlacha Pass ranged from less than 1,000 to 57,000 microsiemens per centimeter. Specific conductance, collected from a continuous monitoring data logger in the middle of the pass from February to September 1992, averaged 36,000 microsiemens per centimeter at 2 feet below the water surface and 40,000 microsiemens per centimeter at 2 feet above the bottom. During both the wet and dry seasons, specific conductance indicated that the primary mixing of tidal waters and freshwater inflow occurs in the mangrove swamps along the shoreline.

  2. Colour atlas of first pass functional imaging of the heart

    SciTech Connect

    Schad, N.; Andrews, E.J.; Fleming, J.W.

    1985-01-01

    This book contains 21 chapters. Some of the titles are: Functional imaging; Fist pass radionuclide studies in evaluation of mitral valve replacement in chronic insufficiency using Bjork-Shiley tilting disc valves; First pass radionuclide studies in evaluation of left and right ventricular function in patients with bioprosthetic mitral valve replacement after 9-11 years; and First pass radionuclide studies in the evaluation of long term (up to about 15 years) follow up of aortic valve replacement using Starr-Edwards ball prosthesis.

  3. Search for plutonium-244 tracks in mountain pass bastnaesite

    USGS Publications Warehouse

    Fleischer, R.L.; Naeser, C.W.

    1972-01-01

    WE have found that bastnaesite, a rare earth fluorocarbonate, from the Precambrian Mountain Pass deposit has an apparent Cretaceous fission track age, and hence does not reveal any anomalous fission tracks due to 244Pu. ?? 1972 Nature Publishing Group.

  4. 58. Adney Gap. View of curvilinear. Alignment of parkway passing ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    58. Adney Gap. View of curvilinear. Alignment of parkway passing through agricultural lease lands. Looking south-southwest. - Blue Ridge Parkway, Between Shenandoah National Park & Great Smoky Mountains, Asheville, Buncombe County, NC

  5. S316, GUARD TOWER ON KOLEKOLE PASS RD. Naval Magazine ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    S316, GUARD TOWER ON KOLEKOLE PASS RD. - Naval Magazine Lualualei, Headquarters Branch, Guard-Watch Tower Type, Off Dent Road & on Kolekole Road near north boundary of installation, Pearl City, Honolulu County, HI

  6. CONTEXT VIEW SHOWING MODERN TRACKS PASSING UNDER HULETTS AND ORE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    CONTEXT VIEW SHOWING MODERN TRACKS PASSING UNDER HULETTS AND ORE YARD. LOOKING NORTHEAST. - Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximately 1.5 miles west of Public Square, Cleveland, Cuyahoga County, OH

  7. Phobos Passes in Front of Sun's Face, Nov. 9, 2010

    NASA Video Gallery

    The larger of the two moons of Mars, Phobos, transits (passes in front of) the sun in this approximately true-speed movie simulation using images from the panoramic camera (Pancam) on NASA's Mars E...

  8. Rainfall Totals from the Tropical Cyclones Passing Over Philippines

    NASA Video Gallery

    Rainfall totals from the TRMM satellite of all tropical cyclones that passed through the Philippines from January through November 11, 2013. Red indicated areas where rainfall totals were greater t...

  9. 5. VIEW OF TRAIL WHERE IT PASSES THROUGH SAGE AREA, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. VIEW OF TRAIL WHERE IT PASSES THROUGH SAGE AREA, OWL CREEK IN CENTER OF PHOTOGRAPH. VIEW LOOKING EAST - Hole-in-the-Rock Trail, Running From Bluff Vicinity to Escalante, Garfield County, Bluff, San Juan County, UT

  10. Redwood tanks with pipeline on trestle passing behind. Old rain ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Redwood tanks with pipeline on trestle passing behind. Old rain shed (Building No. 43) can be seen at right behind the trestle. - Hawaii Volcanoes National Park Water Collection System, Hawaii Volcanoes National Park, Volcano, Hawaii County, HI

  11. 33 CFR 117.499 - Tante Phine Pass.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.499 Tante Phine Pass. The draw of the Tidewater Associated Oil Company bridge, mile 7.6 near Venice, shall open on signal if at least 24...

  12. 33 CFR 117.499 - Tante Phine Pass.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.499 Tante Phine Pass. The draw of the Tidewater Associated Oil Company bridge, mile 7.6 near Venice, shall open on signal if at least 24...

  13. 33 CFR 117.499 - Tante Phine Pass.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.499 Tante Phine Pass. The draw of the Tidewater Associated Oil Company bridge, mile 7.6 near Venice, shall open on signal if at least 24...

  14. 33 CFR 117.499 - Tante Phine Pass.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.499 Tante Phine Pass. The draw of the Tidewater Associated Oil Company bridge, mile 7.6 near Venice, shall open on signal if at least 24...

  15. Band pass filters. Citations from the NTIS data base

    NASA Astrophysics Data System (ADS)

    Reed, W. E.

    1980-04-01

    A bibliography containing 242 abstracts addressing the design, fabrication, characterization, and application of band pass filters is presented. Radiofrequency, digital, acoustic surface wave, and X-ray filters are included.

  16. Study of parallel efficiency in message passing environments

    SciTech Connect

    Hanebutte, U.R.; Tatsumi, Masahiro

    1996-03-01

    A benchmark test using the Message Passing Interface (MPI, an emerging standard for writing message passing programs) has been developed, to study parallel performance in message passing environments. The test is comprised of a computational task of independent calculations followed by a round-robin data communication step. Performance data as a function of computational granularity and message passing requirements are presented for the IBM SPx at Argonne National Laboratory and for a cluster of quasi-dedicated SUN SPARC Station 20`s. In the later portion of the paper a widely accepted communication cost model combined with Amdahl`s law is used to obtain performance predictions for uneven distributed computational work loads.

  17. Pass over Eastern Asia to Philippine Sea and Guam

    NASA Video Gallery

    This pass begins over Mongolia, looking towards the Pacific Ocean, China, and Japan. As the video progresses, you can see major cities along the coast and the Japanese islands on the Philippine Sea...

  18. ELEVATION VIEW NORTH AS AQUEDUCT PASSES OVER CALIFORNIA AQUEDUCT. COVERED ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    ELEVATION VIEW NORTH AS AQUEDUCT PASSES OVER CALIFORNIA AQUEDUCT. COVERED PART OF SIPHON ON DIRECT LINE WITH VERTICAL PIPE IN FOREGROUND - Los Angeles Aqueduct, California Aqueduct, Los Angeles, Los Angeles County, CA

  19. 34 CFR 300.190 - By-pass-general.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... with disabilities enrolled in private elementary schools and secondary schools as required by section... DISABILITIES State Eligibility By-Pass for Children in Private Schools § 300.190 By-pass—general. (a) If,...

  20. 34 CFR 300.190 - By-pass-general.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... with disabilities enrolled in private elementary schools and secondary schools as required by section... DISABILITIES State Eligibility By-Pass for Children in Private Schools § 300.190 By-pass—general. (a) If,...

  1. 34 CFR 300.190 - By-pass-general.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... with disabilities enrolled in private elementary schools and secondary schools as required by section... DISABILITIES State Eligibility By-Pass for Children in Private Schools § 300.190 By-pass—general. (a) If,...

  2. 34 CFR 300.190 - By-pass-general.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... with disabilities enrolled in private elementary schools and secondary schools as required by section... DISABILITIES State Eligibility By-Pass for Children in Private Schools § 300.190 By-pass—general. (a) If,...

  3. Direct Deposit -- When Message Passing Meets Shared Memory

    DTIC Science & Technology

    2000-05-19

    by H. Karl in [64]. The paper implements the pure DSM code, the pure message passing code and a few intermediate forms on the Charlotte DSM system [8...ASPLOS VI), pages 51–60, San Jose, October 1994. ACM. [64] H. Karl . Bridging the gap between distributed shared memory and message passing. Concurrency...pages 94 – 101, 1988. [73] P.N. Loewenstein and D.L. Dill. Verification of a multiprocessor cache protocol using simulation relations and higher-order

  4. Gestalt-like representations hijack Chunk-and-Pass processing.

    PubMed

    Dumitru, Magda L

    2016-01-01

    Christiansen & Chater (C&C) make two related and somewhat contradictory claims, namely that the ever abstract language representations built during Chunk-and-Pass processing allow for ever greater interference from extra-linguistic information, and that it is nevertheless the language system that re-codes incoming information into abstract representations. I analyse these claims and discuss evidence suggesting that Gestalt-like representations hijack Chunk-and-Pass processing.

  5. Morphologic Examination of the Stability of Pass Cavallo, Texas

    DTIC Science & Technology

    2008-05-01

    vertical datum was North American Vertical Datum 1988 based on benchmark “Port O’Connor 1934 No. 1.” These values were then converted to msl for the...to the north of Pass Cavallo and is a more efficient tidal channel by joining with a deeper and more central portion of the bay. Tidal inlets are...Pass Cavallo (Figure 1). The horizontal datum was State Plane North Atlantic Datum 1983, Continuously Operating Reference Stations adjustment, Texas

  6. Ultra-compact resonant tunneling-based TE-pass and TM-pass polarizers for SOI platform.

    PubMed

    Azzam, Shaimaa I; Obayya, Salah S A

    2015-03-15

    We investigate the polarization-dependent resonance tunneling effect in silicon waveguides to achieve ultra-compact and highly efficient polarization fitters for integrated silicon photonics, to the best of our knowledge for the first time. We hence propose simple structures for silicon-on-insulator transverse electric (TE)-pass and transverse magnetic (TM)-pass polarizers based on the resonance tunneling effect in silicon waveguides. The suggested TE-pass polarizer has insertion losses (IL), extinction ratio (ER), and return losses (RL) of 0.004 dB, 18 dB, and 24 dB, respectively; whereas, the TM-pass polarizer is characterized by IL, ER, and RL of 0.15 dB, 20 dB, and 23 dB, respectively. Both polarizers have an ultra-short device length of only 1.35 and 1.31 μm for the TE-pass and the TM-pass polarizers which are the shortest reported lengths to the best of our knowledge.

  7. 77 FR 31725 - Safety Zone; Belle Pass Dredge Operations, Belle Pass, Mile Marker 1.0 to Mile Marker (−0.2...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-30

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Belle Pass Dredge Operations, Belle Pass... operations in specified waters of Belle Pass, Port Fourchon, Louisiana. This action is necessary for the... pipelines along the Gulf Shoreline of Belle Pass. In addition to the dredging equipment described...

  8. Thin-disk laser multi-pass amplifier

    NASA Astrophysics Data System (ADS)

    Schuhmann, K.; Ahmed, M. A.; Antognini, A.; Graf, T.; Hänsch, T. W.; Kirch, K.; Kottmann, F.; Pohl, R.; Taqqu, D.; Voss, A.; Weichelt, B.

    2015-02-01

    In the context of the Lamb shift measurement in muonic helium [1,2,3,4] we developed a thin-disk laser composed of a Q-switched oscillator and a multi-pass amplifier delivering pulses of 150 mJ at a pulse duration of 100 ns. Its peculiar requirements are stochastic trigger and short delay time (< 500 ns) between trigger and optical output [5]. The concept of the thin-disk laser allows for energy and power scaling with high efficiency. However the single pass gain is small (about 1.2). Hence a multi-pass scheme with precise mode matching for large beam waists (w = 2 mm) is required. Instead of using the standard 4f design, we have developed a multi-pass amplifier with a beam propagation insensitive to thermal lens effects and misalignments. The beam propagation is equivalent to multiple roundtrips in an optically stable resonator. To support the propagation we used an array of 2 x 8 individually adjustable plane mirrors. Astigmatism has been minimized by a compact mirror placement. Precise alignment of the kinematic array was realized using our own mirror mount design. A small signal gain of 5 for 8 passes at a pump power of 400 W was reached. The laser was running for more than 3 months without the need of realignment. Pointing stability studies is also reported here.

  9. Development of Message Passing Routines for High Performance Parallel Computations

    NASA Technical Reports Server (NTRS)

    Summers, Edward K.

    2004-01-01

    Computational Fluid Dynamics (CFD) calculations require a great deal of computing power for completing the detailed computations involved. In an effort shorten the time it takes to complete such calculations they are implemented on a parallel computer. In the case of a parallel computer some sort of message passing structure must be used to communicate between the computers because, unlike a single machine, each computer in a parallel computing cluster does not have access to all the data or run all the parts of the total program. Thus, message passing is used to divide up the data and send instructions to each machine. The nature of my work this summer involves programming the "message passing" aspect of the parallel computer. I am working on modifying an existing program, which was written with OpenMP, and does not use a multi-machine parallel computing structure, to work with Message Passing Interface (MPI) routines. The actual code is being written in the FORTRAN 90 programming language. My goal is to write a parameterized message passing structure that could be used for a variety of individual applications and implement it on Silicon Graphics Incorporated s (SGI) IRIX operating system. With this new parameterized structure engineers would be able to speed up computations for a wide variety of purposes without having to use larger and more expensive computing equipment from another division or another NASA center.

  10. A prototype for the PASS Permanent All Sky Survey

    NASA Astrophysics Data System (ADS)

    Deeg, H. J.; Alonso, R.; Belmonte, J. A.; Horne, K.; Alsubai, K.; Collier Cameron, A.; Doyle, L. R.

    2004-10-01

    A prototype system for the Permanent All Sky Survey (PASS) project is presented. PASS is a continuous photometric survey of the entire celestial sphere with a high temporal resolution. Its major objectives are the detection of all giant-planet transits (with periods up to some weeks) across stars up to mag 10.5, and to deliver continuously photometry that is useful for the study of any variable stars. The prototype is based on CCD cameras with short focal length optics on a fixed mount. A small dome to house it at Teide Observatory, Tenerife, is currently being constructed. A placement at the antarctic Dome C is also being considered. The prototype will be used for a feasibility study of PASS, to define the best observing strategies, and to perform a detailed characterization of the capabilities and scope of the survey. Afterwards, a first partial sky surveying will be started with it. That first survey may be able to detect transiting planets during its first few hundred hours of operation. It will also deliver a data set around which software modules dealing with the various scientific objectives of PASS will be developed. The PASS project is still in its early phase and teams interested in specific scientific objectives, in providing technical expertise, or in participating with own observations are invited to collaborate.

  11. 42 CFR 419.64 - Transitional pass-through payments: Drugs and biologicals.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Transitional pass-through payments: Drugs and... DEPARTMENT SERVICES Transitional Pass-through Payments § 419.64 Transitional pass-through payments: Drugs and biologicals. (a) Eligibility for pass-through payment. CMS makes a transitional pass-through payment for...

  12. MPF: A portable message passing facility for shared memory multiprocessors

    NASA Technical Reports Server (NTRS)

    Malony, Allen D.; Reed, Daniel A.; Mcguire, Patrick J.

    1987-01-01

    The design, implementation, and performance evaluation of a message passing facility (MPF) for shared memory multiprocessors are presented. The MPF is based on a message passing model conceptually similar to conversations. Participants (parallel processors) can enter or leave a conversation at any time. The message passing primitives for this model are implemented as a portable library of C function calls. The MPF is currently operational on a Sequent Balance 21000, and several parallel applications were developed and tested. Several simple benchmark programs are presented to establish interprocess communication performance for common patterns of interprocess communication. Finally, performance figures are presented for two parallel applications, linear systems solution, and iterative solution of partial differential equations.

  13. Standards for message-passing in a distributed memory environment

    SciTech Connect

    Walker, D.W.

    1992-08-01

    This report presents a summary of the main ideas presented at the First CRPC Work-shop on Standards for Message Passing in a Distributed Memory Environment, held April 29-30, 1992, in Williamsburg, Virginia. This workshop attracted 68 attendees including representative from major hardware and software vendors, and was the first in a series of workshops sponsored by the Center for Research on Parallel Computation. The aim of this series of workshops is to develop and implement a standard for message passing on distributed memory concurrent computers, thereby making it easier to develop efficient, portable application codes for such machines. The report discusses the main issues raised in the CRPC workshop, and describes proposed desirable features of a message passing standard for distributed memory environments.

  14. Efficiently passing messages in distributed spiking neural network simulation.

    PubMed

    Thibeault, Corey M; Minkovich, Kirill; O'Brien, Michael J; Harris, Frederick C; Srinivasa, Narayan

    2013-01-01

    Efficiently passing spiking messages in a neural model is an important aspect of high-performance simulation. As the scale of networks has increased so has the size of the computing systems required to simulate them. In addition, the information exchange of these resources has become more of an impediment to performance. In this paper we explore spike message passing using different mechanisms provided by the Message Passing Interface (MPI). A specific implementation, MVAPICH, designed for high-performance clusters with Infiniband hardware is employed. The focus is on providing information about these mechanisms for users of commodity high-performance spiking simulators. In addition, a novel hybrid method for spike exchange was implemented and benchmarked.

  15. By-pass hydrocarbon absorber system for ULEV

    SciTech Connect

    Williams, J.L.; Patil, M.D.; Hertl, W.

    1996-09-01

    A by-pass zeolite adsorber system consisting of a first catalyst, a by-pass loop containing the zeolite adsorbers followed by a downstream second catalyst was FTP tested using a US vehicle equipped with a 3.8 L, V6 engine. The system exhibited ULEV emissions performance with hydrocarbon adsorption and regeneration (desorption and oxidation) within the FTP cycle and required only a single diversion valve within the exhaust line. Adsorption takes place during the initial 70 seconds of the FTP cycle. The adsorbers were regenerated with the exhaust gas plus injected air.

  16. Personal Access Satellite System (PASS) study. Fiscal year 1989 results

    NASA Technical Reports Server (NTRS)

    Sue, Miles K. (Editor)

    1990-01-01

    The Jet Propulsion Laboratory is exploring the potential and feasibility of a personal access satellite system (PASS) that will offer the user greater freedom and mobility than existing or currently planned communications systems. Studies performed in prior years resulted in a strawman design and the identification of technologies that are critical to the successful implementation of PASS. The study efforts in FY-89 were directed towards alternative design options with the objective of either improving the system performance or alleviating the constraints on the user terminal. The various design options and system issues studied this year and the results of the study are presented.

  17. Extensible message passing application development and debugging with Python

    SciTech Connect

    Beazley, D.M.; Lomdahl, P.S.

    1996-09-19

    The authors describe how they have parallelized Python, an interpreted object oriented scripting language, and used it to build an extensible message-passing C/C++ applications for the CM-5, Cray T3D, and Sun multiprocessor servers running MPI. Using a parallelized Python interpreter, it is possible to interact with large-scale parallel applications, rapidly prototype new features, and perform application specific debugging. It is even possible to write message passing programs in Python itself. The authors describe some of the tools they have developed to extend Python and applications of this approach.

  18. Sedimentation Patterns in a Stabilized Migratory Inlet, Blind Pass, Florida

    DTIC Science & Technology

    2007-01-01

    difference model of depth-averaged circulation, the Coastal Modeling System (CMS)- M2D (Buttolph et al. 2006), was set up to simulate tidal-driven flow...January 2001 at Johns Pass and verified with the flow data as described in the above paragraph. The CMS- M2D model has been applied extensively in tidal...horizontal variation, a depth- averaged circulation model, such as the CMS- M2D , is a suitable and valuable tool to examine the Blind Pass

  19. Message passing in fault-tolerant quantum error correction

    NASA Astrophysics Data System (ADS)

    Evans, Zachary W. E.; Stephens, Ashley M.

    2008-12-01

    Inspired by Knill’s scheme for message passing error detection, here we develop a scheme for message passing error correction for the nine-qubit Bacon-Shor code. We show that for two levels of concatenated error correction, where classical information obtained at the first level is used to help interpret the syndrome at the second level, our scheme will correct all cases with four physical errors. This results in a reduction of the logical failure rate relative to conventional error correction by a factor proportional to the reciprocal of the physical error rate.

  20. 78 FR 50405 - Amended Application for Presidential Permit; Northern Pass Transmission LLC

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ... Application for Presidential Permit; Northern Pass Transmission LLC AGENCY: Office of Electricity Delivery and Energy Reliability, DOE. ACTION: Notice of Amended Application. SUMMARY: Northern Pass Transmission LLC (Northern Pass) has submitted an amended application for a Presidential permit to construct,...

  1. 36 CFR 72.37 - Pass-through funding.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... and Innovation § 72.37 Pass-through funding. Section 1006(a)(1) of the Act states that at the... Innovation grants may be transferred in whole or in part to independent special purpose local governments... rehabilitated or used for innovation, through lease or ownership. (vii) Establish a contractual agreement...

  2. Note Passing and Gendered Discipline in Vietnamese Schools

    ERIC Educational Resources Information Center

    Horton, Paul

    2015-01-01

    While researchers agree that note passing is predominantly an activity engaged in by girls, there has been relatively little consideration of why this is the case. In this article, I argue that gendered expectations about the appropriate characters of boys and girls in Vietnam are incorporated into the disciplinary framework of schools, and that…

  3. 16. Boiler room, view looking east showing three, four pass ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16. Boiler room, view looking east showing three, four pass horizontal Cleaver Brooks Package Boilers, 1-150 H.P. and 2-200 H.P., 6900 lbs/hour and 5175 lbs/hour, 200 PSI - East Boston Pumping Station, Chelsea Street at Chelsea Creek, Boston, Suffolk County, MA

  4. Citizenship: Passing the Test. [Student's Workbook and Teacher's Guide].

    ERIC Educational Resources Information Center

    Weintraub, Lynne

    This document combines a student's workbook and teacher's guide, which were separately published. The beginning-level workbook in United States citizenship instruction is intended for adult immigrants with limited reading skills and/or familiarity with civics concepts. It presents and reinforces the knowledge required to pass the standardized…

  5. 36 CFR 1193.37 - Information pass through.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Information pass through. 1193.37 Section 1193.37 Parks, Forests, and Public Property ARCHITECTURAL AND TRANSPORTATION BARRIERS COMPLIANCE BOARD TELECOMMUNICATIONS ACT ACCESSIBILITY GUIDELINES Requirements for Accessibility and...

  6. 36 CFR 1193.37 - Information pass through.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 3 2012-07-01 2012-07-01 false Information pass through. 1193.37 Section 1193.37 Parks, Forests, and Public Property ARCHITECTURAL AND TRANSPORTATION BARRIERS COMPLIANCE BOARD TELECOMMUNICATIONS ACT ACCESSIBILITY GUIDELINES Requirements for Accessibility and...

  7. 36 CFR 1193.37 - Information pass through.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 3 2013-07-01 2012-07-01 true Information pass through. 1193.37 Section 1193.37 Parks, Forests, and Public Property ARCHITECTURAL AND TRANSPORTATION BARRIERS COMPLIANCE BOARD TELECOMMUNICATIONS ACT ACCESSIBILITY GUIDELINES Requirements for Accessibility and...

  8. 36 CFR 1193.37 - Information pass through.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 36 Parks, Forests, and Public Property 3 2014-07-01 2014-07-01 false Information pass through. 1193.37 Section 1193.37 Parks, Forests, and Public Property ARCHITECTURAL AND TRANSPORTATION BARRIERS COMPLIANCE BOARD TELECOMMUNICATIONS ACT ACCESSIBILITY GUIDELINES Requirements for Accessibility and...

  9. Single Pass Collider Memo: Gradient Perturbations of the SLC arc

    SciTech Connect

    Weng, W. T.; Sands, M.

    2016-12-16

    As the beam passes through the arcs, the gradient it encounters at each magnet differs from the design value. This deviation may be in part random and in part systematic. In this note we make estimates of the effects to be expected from both kinds of errors.

  10. 47 CFR 7.9 - Information pass through.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 1 2012-10-01 2012-10-01 false Information pass through. 7.9 Section 7.9 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL ACCESS TO VOICEMAIL AND INTERACTIVE MENU SERVICES AND..., signal compression technologies shall not remove information needed for access or shall restore it...

  11. 47 CFR 6.9 - Information pass through.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 1 2012-10-01 2012-10-01 false Information pass through. 6.9 Section 6.9 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL ACCESS TO TELECOMMUNICATIONS SERVICE, TELECOMMUNICATIONS... achievable. In particular, signal compression technologies shall not remove information needed for access...

  12. BMM SEPARATION SCREEN PERMITS SAND TO PASS TO BELT CONVEYORS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BMM SEPARATION SCREEN PERMITS SAND TO PASS TO BELT CONVEYORS BELOW THAT TRANSPORT THE SAND BACK TO STORAGE AND RECONDITIONING BINS WHILE CASTINGS ARE TRANSPORTED ON ADDITIONAL VIBRATING CONVEYORS TO DEGATING AREAS. - Southern Ductile Casting Company, Shaking, Degating & Sand Systems, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

  13. Passing as Black: Racial Identity Work among Biracial Americans

    ERIC Educational Resources Information Center

    Khanna, Nikki; Johnson, Cathryn

    2010-01-01

    Drawing on interview data with black-white biracial adults, we examine the considerable agency most have in asserting their racial identities to others. Extending research on "identity work" (Snow and Anderson 1987), we explore the strategies biracial people use to conceal (i.e., pass), cover, and/or accent aspects of their racial ancestries, and…

  14. Choosing Minimum Passing Scores by Stochastic Approximation Techniques.

    ERIC Educational Resources Information Center

    Livingston, Samuel A.

    1980-01-01

    A specified minimum performance level can be translated into a minimum passing score for the written test by measuring the performance of students whose written test scores are near the desired cutoff score. Stochastic approximation methods accomplish this purpose. The up-and-down method and the Robbins-Monro process are compared. (Author/RL)

  15. Peer Assisted Study Sessions (PASS): Does Gender Matter?

    ERIC Educational Resources Information Center

    Geerlings, Peter M.; Cole, Helen; Batt, Sharryn; Martin-Lynch, Pamela

    2016-01-01

    Peer-learning is an effective way to assist students to acquire study skills and content knowledge, especially in university courses that students find difficult, and it is an effective adjunct to improve student retention. In 2014, Murdoch University in Perth, Western Australia, commenced Peer Assisted Study Sessions (PASS) in two first-year…

  16. 7 CFR 29.97 - Who shall pass upon appeals.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 2 2014-01-01 2014-01-01 false Who shall pass upon appeals. 29.97 Section 29.97 Agriculture Regulations of the Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT OF AGRICULTURE COMMODITY STANDARDS AND STANDARD...

  17. 36 CFR 13.918 - Sable Pass Wildlife Viewing Area.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 1 2011-07-01 2011-07-01 false Sable Pass Wildlife Viewing Area. 13.918 Section 13.918 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR NATIONAL PARK SYSTEM UNITS IN ALASKA Special Regulations-Denali National Park...

  18. 2. AERIAL VIEW SHOWING AQUEDUCT RIGHTOFWAY PASSING OVER RAILROAD LINE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. AERIAL VIEW SHOWING AQUEDUCT RIGHT-OF-WAY PASSING OVER RAILROAD LINE FROM STONE QUARRY. TRACKS ARE GONE BUT RIGHT-OF-WAY IS STILL VISIBLE. - Old Croton Aqueduct, Quarry Railroad Bridge, Aqueduct Lane at Williams Street, Hastings-on-Hudson, Westchester County, NY

  19. Asynchronous Message Passing in the JPL Flight System Testbed

    NASA Technical Reports Server (NTRS)

    Burleigh, Scott

    1996-01-01

    The flight mission simulation software in the Jet Propulsion Laboratory's Flight System Testbed (FST) is a heterogeneous, distributed system that is built on an interprocess communication model of asynchronous message passing rather than remote procedure calls (RPCs). The reasoning behind this design decision is discussed; the mechanism used to implement it (.

  20. Results of 1993 Repeat-Pass SAR Interferometry Experiments

    NASA Technical Reports Server (NTRS)

    Klein, J. D.; Hensley, S.; Madsen, S. N.; Webb, F. H.

    1994-01-01

    In this talk we present results of a repeat-pass SAR interferometry experiment performed in June 1993 near Portage, Maine. Differential GPS data accurate to +/-10cm were acquired to aid in motion compensation and geolocation of targets in the imagery. The experiment and data analysis will be discussed, and results will be shown during the presentation.

  1. Stabilized Alkali-Metal Ultraviolet-Band-Pass Filters

    NASA Technical Reports Server (NTRS)

    Mardesich, Nick; Fraschetti, George A.; Mccann, Timothy; Mayall, Sherwood D.; Dunn, Donald E.; Trauger, John T.

    1995-01-01

    Layers of bismuth 5 to 10 angstrom thick incorporated into alkali-metal ultraviolet-band-pass optical filters by use of advanced fabrication techniques. In new filters layer of bismuth helps to reduce surface migration of sodium. Sodium layer made more stable and decreased tendency to form pinholes by migration.

  2. 36 CFR 13.918 - Sable Pass Wildlife Viewing Area.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 36 Parks, Forests, and Public Property 1 2014-07-01 2014-07-01 false Sable Pass Wildlife Viewing Area. 13.918 Section 13.918 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR NATIONAL PARK SYSTEM UNITS IN ALASKA Special Regulations-Denali National Park...

  3. 36 CFR 13.918 - Sable Pass Wildlife Viewing Area.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 1 2013-07-01 2013-07-01 false Sable Pass Wildlife Viewing Area. 13.918 Section 13.918 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR NATIONAL PARK SYSTEM UNITS IN ALASKA Special Regulations-Denali National Park...

  4. 36 CFR 13.918 - Sable Pass Wildlife Viewing Area.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 1 2012-07-01 2012-07-01 false Sable Pass Wildlife Viewing Area. 13.918 Section 13.918 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR NATIONAL PARK SYSTEM UNITS IN ALASKA Special Regulations-Denali National Park...

  5. 36 CFR 72.37 - Pass-through funding.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 1 2012-07-01 2012-07-01 false Pass-through funding. 72.37 Section 72.37 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR URBAN PARK AND RECREATION RECOVERY ACT OF 1978 Grants for Recovery Action Program Development,...

  6. 36 CFR 72.37 - Pass-through funding.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 1 2013-07-01 2013-07-01 false Pass-through funding. 72.37 Section 72.37 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR URBAN PARK AND RECREATION RECOVERY ACT OF 1978 Grants for Recovery Action Program Development,...

  7. 36 CFR 72.37 - Pass-through funding.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 36 Parks, Forests, and Public Property 1 2014-07-01 2014-07-01 false Pass-through funding. 72.37 Section 72.37 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR URBAN PARK AND RECREATION RECOVERY ACT OF 1978 Grants for Recovery Action Program Development,...

  8. Multiple pass collaborative search in the presence of false alarms

    NASA Astrophysics Data System (ADS)

    Baylog, John G.; Wettergren, Thomas A.

    2015-05-01

    This paper addresses the planning of multiple collaborative searchers that are seeking to find hidden objects (i.e. mines) in environments where the sensor detection process is prone to false alarms. In such situations it is anticipated that collaboration between searchers that are examining the same sub-regions may be used to mitigate the impact of false alarms. A standard Receiver Operator Characteristic (ROC) analysis is conducted and the mapping between a single search pass ROC curve and an equivalent multiple search pass representation within a cumulative probability space is discussed. This mapping produces an analogous family of ROC curves for an increasing number of search passes using either a first detection or multiple occurrence performance criteria. The migration of ROC operating points is analyzed as additional search passes are included within a search plan and suggests the need to coordinate search effort with operating point selection. The mapping from waiting time event probabilities to a total error performance criterion weighted according to the cumulative probabilities of missed detection and false alarm is developed. Details of its application for threshold optimization within search planning is discussed and numerical results are provided to demonstrate the usefulness of the models in evaluating performance trade-offs.

  9. PENN PASS: A Program for Graduates of Foreign Dental Schools.

    ERIC Educational Resources Information Center

    Berthold, Peter; Lopez, Naty

    1994-01-01

    This article describes the University of Pennsylvania's School of Dental Medicine's Program for Advanced Standing Students (PASS) which provides graduates of foreign dental schools with an intensive summer program to prepare them for integration with four-year students for the last two years of didactic and clinical curriculum. A survey of 72 PASS…

  10. Light curves of light rays passing through a wormhole

    NASA Astrophysics Data System (ADS)

    Tsukamoto, Naoki; Harada, Tomohiro

    2017-01-01

    Gravitational lensing is a good probe into the topological structure of dark gravitating celestial objects. In this paper, we investigate the light curve of a light ray that passes through the throat of an Ellis wormhole, the simplest example of traversable wormholes. The method developed here is also applicable to other traversable wormholes. To study whether the light curve of a light ray that passes through a wormhole throat is distinguishable from that which does not, we also calculate light curves without the passage of a throat for an Ellis wormhole, a Schwarzschild black hole, and an ultrastatic wormhole with the spatial geometry identical to that of the Schwarzschild black hole in the following two cases: (i) "microlensing," where the source, lens, and observer are almost aligned in this order and the light ray starts at the source, refracts in the weak gravitational field of the lens with a small deflection angle, and reaches the observer; and (ii) "retrolensing," where the source, observer, and lens are almost aligned in this order, and the light ray starts at the source, refracts in the vicinity of the light sphere of the lens with a deflection angle very close to π , and reaches the observer. We find that the light curve of the light ray that passes through the throat of the Ellis wormhole is clearly distinguishable from that by the microlensing but not from that by the retrolensing. This is because the light curve of a light ray that passes by a light sphere of a lens with a large deflection angle has common characters, irrespective of the details of the lens object. This implies that the light curves of the light rays that pass through the throat of more general traversable wormholes are qualitatively the same as that of the Ellis wormhole.

  11. Statistics of Epidemics in Networks by Passing Messages

    NASA Astrophysics Data System (ADS)

    Shrestha, Munik Kumar

    Epidemic processes are common out-of-equilibrium phenomena of broad interdisciplinary interest. In this thesis, we show how message-passing approach can be a helpful tool for simulating epidemic models in disordered medium like networks, and in particular for estimating the probability that a given node will become infectious at a particular time. The sort of dynamics we consider are stochastic, where randomness can arise from the stochastic events or from the randomness of network structures. As in belief propagation, variables or messages in message-passing approach are defined on the directed edges of a network. However, unlike belief propagation, where the posterior distributions are updated according to Bayes' rule, in message-passing approach we write differential equations for the messages over time. It takes correlations between neighboring nodes into account while preventing causal signals from backtracking to their immediate source, and thus avoids "echo chamber effects" where a pair of adjacent nodes each amplify the probability that the other is infectious. In our first results, we develop a message-passing approach to threshold models of behavior popular in sociology. These are models, first proposed by Granovetter, where individuals have to hear about a trend or behavior from some number of neighbors before adopting it themselves. In thermodynamic limit of large random networks, we provide an exact analytic scheme while calculating the time dependence of the probabilities and thus learning about the whole dynamics of bootstrap percolation, which is a simple model known in statistical physics for exhibiting discontinuous phase transition. As an application, we apply a similar model to financial networks, studying when bankruptcies spread due to the sudden devaluation of shared assets in overlapping portfolios. We predict that although diversification may be good for individual institutions, it can create dangerous systemic effects, and as a result

  12. Regenerative multi-pass beam breakup in two dimensions

    SciTech Connect

    Eduard Pozdeyev

    2004-12-01

    In this paper, a formula, describing a threshold of the regenerative multi-pass Beam Breakup (BBU) for a single dipole higher order mode with arbitrary polarization in a two-pass accelerator with a general-form, 4x4 recirculation matrix, is derived. Also a new two-dimensional BBU code is introduced. To illustrate specifics of the BBU in two dimensions, the formula is used to calculate the threshold in several cases including two-dimensional uncoupled optics, reflecting optics, and rotating optics. The analytical results are compared to results of simulation obtained with the new code. At the end of the paper, a mathematical relation between transfer matrices between cavities of the accelerating structure and recirculation matrices for each cavity, which must be satisfied in order to successfully suppress the BBU by reflection or rotation in several cavities, is presented.

  13. Continuity of the San Andreas Fault at San Gorgonio Pass

    NASA Astrophysics Data System (ADS)

    Carena, S.; Suppe, J.

    2002-12-01

    The San Andreas fault at San Gorgonio Pass does not have a clear surface trace and is considered aseismic. Our findings suggest in fact that the existence of a through-going vertical or near-vertical San Andreas fault between Yucaipa and North Palm Springs is highly unlikely. We mapped over 70 faults in the San Gorgonio Pass-San Bernardino Mountains region using the catalog of 43,500 relocated 1975-1998 earthquakes of Richards-Dinger and Shearer (2000). A clustering algorithm was applied to the relocated earthquakes in order to obtain tighter earthquake clouds and thus better-defined fault surfaces. The earthquakes were then imported into Gocad, a 3D modeling software that allowed us to separate earthquakes into coplanar clusters associated with different faults and fault strands and to fit optimized surfaces to them. We also used the catalog of 13,000 focal mechanisms of Hauksson (2000) to confirm the nature of the mapped faults. We were able to constrain the 3D geometry of the San Andreas fault near San Gorgonio Pass from the 3D geometry of the fault network surrounding it. None of these faults show any displacement due to an hypothetical sub-vertical San Andreas. The San Andreas fault must therefore rotate to much shallower dips, or lose its continuity at depths between 3 and 15 km The most likely configuration is the one where the San Andreas fault merges into the shallow-dipping San Gorgonio Pass thrust W of North Palm Springs. Strike-slip motion is taken up by both the thrust (the slip vector on the N. Palm Springs segment is reverse/right-lateral strike-slip) and by a series of NW striking faults in the footwall of the thrust. The W termination of the most active part of the San Gorgonio Pass thrust coincides with one of these footwall faults at depth, and with the south bend in the San Andreas fault strand N of Banning. This boundary also marks a change in the stress field, with a dominant strike-slip regime to the E (and localized thrusting between San

  14. Regulation of information passing by synaptic transmission: a short review.

    PubMed

    Di Maio, Vito

    2008-08-15

    The largest part of information passed among neurons in the brain occurs by the means of chemical synapses connecting the axons of presynaptic neurons to the dendritic tree of the postsynaptic ones. In the present paper, the most relevant open problems related to the mechanisms of control of the information passing among neurons by synaptic transmission will be shortly reviewed. The "cross talking" between synapses, their mutual interactions and the control of the information flow between different areas of the dendritic tree will be also considered. The threshold mechanism based on the "reversal potential" will be considered for its role in the control of information transfer among neurons and also for its contribution to the information flow among different areas of the dendritic tree and to the computational ability of the single neuron. The concept of "competition for plasticity" will be proposed as a mechanism of competition based on the synaptic activation time.

  15. A search for stars passing close to the sun

    NASA Technical Reports Server (NTRS)

    Garcia-Sanchez, J.; Preston, R. A.; Jones, D. L.; Weissman, P. R.; Lestrade, J.-F.; Latham, D. W.; Stefanik, R. P.

    1997-01-01

    Hipparcos proper motion and parallax data are combined for nearby stars with ground-based radial velocity measurements in order to identify stars which may have passed, or will pass, close enough to the sun to perturb the Oort cloud. Close stellar encounters could deflect large numbers of comets into the inner solar system, with possible serious consequences for impact hazards on the earth. Only one star, Gliese 710 is found with a predicted closest approach of less than 0.5 pc, although several stars come within 1 pc during a 8.5 M year interval. In most cases, the uncertainty in closest approach distance is dominated by uncertainties in the barycenter motion of binary systems. A program to obtain new radial velocities for stars in the sample with no previously published values is underway.

  16. Testing the Turing Test — do Men Pass It?

    NASA Astrophysics Data System (ADS)

    Adam, Ruth; Hershberg, Uri; Schul, Yaacov; Solomon, Sorin

    We are fascinated by the idea of giving life to the inanimate. The fields of Artificial Life and Artificial Intelligence (AI) attempt to use a scientific approach to pursue this desire. The first steps on this approach hark back to Turing and his suggestion of an imitation game as an alternative answer to the question "can machines think?".1 To test his hypothesis, Turing formulated the Turing test1 to detect human behavior in computers. But how do humans pass such a test? What would you say if you would learn that they do not pass it well? What would it mean for our understanding of human behavior? What would it mean for our design of tests of the success of artificial life? We report below an experiment in which men consistently failed the Turing test.

  17. Virus strategies for passing the nuclear envelope barrier

    PubMed Central

    Kobiler, Oren; Drayman, Nir; Butin-Israeli, Veronika; Oppenheim, Ariella

    2012-01-01

    Viruses that replicate in the nucleus need to pass the nuclear envelope barrier during infection. Research in recent years indicates that the nuclear envelope is a major hurdle for many viruses. This review describes strategies to overcome this obstacle developed by seven virus families: herpesviridae, adenoviridae, orthomyxoviridae, lentiviruses (which are part of retroviridae), Hepadnaviridae, parvoviridae and polyomaviridae. Most viruses use the canonical nuclear pore complex (NPC) in order to get their genome into the nucleus. Viral capsids that are larger than the nuclear pore disassemble before or during passing through the NPC, thus allowing genome nuclear entry. Surprisingly, increasing evidence suggest that parvoviruses and polyomaviruses may bypass the nuclear pore by trafficking directly through the nuclear membrane. Additional studies are required for better understanding these processes. Since nuclear entry emerges as the limiting step in infection for many viruses, it may serve as an ideal target for antiviral drug development. PMID:22929056

  18. PASS Syndrome: An IL-1-Driven Autoinflammatory Disease.

    PubMed

    Leuenberger, Mathieu; Berner, Jeanne; Di Lucca, Julie; Fischer, Lara; Kaparos, Nikolaos; Conrad, Curdin; Hohl, Daniel; So, Alexander; Gilliet, Michel

    2016-01-01

    PASS syndrome is a rare inflammatory disease characterized by a chronic-relapsing course of pyoderma gangrenosum, acne vulgaris, hidradenitis suppurativa and ankylosing spondylitis. Here, we describe a case of a patient with spontaneously recurrent purulent skin lesions along with seronegative spondylarthritis consistent with the PASS syndrome. During his disease exacerbation, the patient displayed episodes of fever along with elevated serum levels of interleukin (IL)-1β. Skin lesions were characterized by sterile neutrophilic infiltrates and showed a rapid response to the IL-1 receptor antagonist anakinra (Kineret®) consistent with the autoinflammatory nature of this disease. However, unlike other autoinflammatory diseases such as PAPA and PAPASH, we did not find mutations in the gene PSTPIP1, raising the possibility that other specific mutations in the IL-1 pathway may be involved.

  19. Fish pass assessment by remote control: a novel framework for quantifying the hydraulics at fish pass entrances

    NASA Astrophysics Data System (ADS)

    Kriechbaumer, Thomas; Blackburn, Kim; Gill, Andrew; Breckon, Toby; Everard, Nick; Wright, Ros; Rivas Casado, Monica

    2014-05-01

    Fragmentation of aquatic habitats can lead to the extinction of migratory fish species with severe negative consequences at the ecosystem level and thus opposes the target of good ecological status of rivers defined in the EU Water Framework Directive (WFD). In the UK, the implementation of the EU WFD requires investments in fish pass facilities of estimated 532 million GBP (i.e. 639 million Euros) until 2027 to ensure fish passage at around 3,000 barriers considered critical. Hundreds of passes have been installed in the past. However, monitoring studies of fish passes around the world indicate that on average less than half of the fish attempting to pass such facilities are actually successful. There is a need for frameworks that allow the rapid identification of facilities that are biologically effective and those that require enhancement. Although there are many environmental characteristics that can affect fish passage success, past research suggests that variations in hydrodynamic conditions, reflected in water velocities, velocity gradients and turbulences, are the major cues that fish use to seek migration pathways in rivers. This paper presents the first steps taken in the development of a framework for the rapid field-based quantification of the hydraulic conditions downstream of fish passes and the assessment of the attractivity of fish passes for salmonids and coarse fish in UK rivers. For this purpose, a small-sized remote control platform carrying an acoustic Doppler current profiler (ADCP), a GPS unit, a stereo camera and an inertial measurement unit has been developed. The large amount of data on water velocities and depths measured by the ADCP within relatively short time is used to quantify the spatial and temporal distribution of water velocities. By matching these hydraulic features with known preferences of migratory fish, it is attempted to identify likely migration routes and aggregation areas at barriers as well as hydraulic features that

  20. Teaching Doppler Effect with a passing noise source

    NASA Astrophysics Data System (ADS)

    Costa, Ivan F.; Mocellin, Alexandra

    2010-07-01

    The noise pitch variation of a passing noise source allows a low cost experimental approach to calculate speed and, for the first time, distance. We adjusted the recorded noise pitch variation to the Doppler shift equation for sound. We did this by taking into account the frequency delay due to the sound source displacement and performing a Fast Fourier Transform (FFT) of the noise signal using free software. This experimental method was successfully applied to aircraft and automobiles.

  1. One pass learning for generalized classifier neural network.

    PubMed

    Ozyildirim, Buse Melis; Avci, Mutlu

    2016-01-01

    Generalized classifier neural network introduced as a kind of radial basis function neural network, uses gradient descent based optimized smoothing parameter value to provide efficient classification. However, optimization consumes quite a long time and may cause a drawback. In this work, one pass learning for generalized classifier neural network is proposed to overcome this disadvantage. Proposed method utilizes standard deviation of each class to calculate corresponding smoothing parameter. Since different datasets may have different standard deviations and data distributions, proposed method tries to handle these differences by defining two functions for smoothing parameter calculation. Thresholding is applied to determine which function will be used. One of these functions is defined for datasets having different range of values. It provides balanced smoothing parameters for these datasets through logarithmic function and changing the operation range to lower boundary. On the other hand, the other function calculates smoothing parameter value for classes having standard deviation smaller than the threshold value. Proposed method is tested on 14 datasets and performance of one pass learning generalized classifier neural network is compared with that of probabilistic neural network, radial basis function neural network, extreme learning machines, and standard and logarithmic learning generalized classifier neural network in MATLAB environment. One pass learning generalized classifier neural network provides more than a thousand times faster classification than standard and logarithmic generalized classifier neural network. Due to its classification accuracy and speed, one pass generalized classifier neural network can be considered as an efficient alternative to probabilistic neural network. Test results show that proposed method overcomes computational drawback of generalized classifier neural network and may increase the classification performance.

  2. Switched Band-Pass Filters for Adaptive Transceivers

    NASA Technical Reports Server (NTRS)

    Wang, Ray

    2007-01-01

    Switched band-pass filters are key components of proposed adaptive, software- defined radio transceivers that would be parts of envisioned digital-data-communication networks that would enable real-time acquisition and monitoring of data from geographically distributed sensors. Examples of sensors to be connected to such networks include security cameras, radio-frequency identification units, and geolocation units based on the Global Positioning System. Through suitable software configuration and without changing hardware, these transceivers could be made to operate according to any of a number of complex wireless-communication standards that could be characterized by diverse modulation schemes, bandwidths, and data-handling protocols. The adaptive transceivers would include field-programmable gate arrays (FPGAs) and digital signal-processing hardware. In the receiving path of a transceiver, the incoming signal would be amplified by a low-noise amplifier (LNA). The output spectrum of the LNA would be processed by a band-pass filter operating in the frequency range between 900 MHz and 2.4 GHz. Then a down-converter would translate the signal to a lower frequency range to facilitate analog-to-digital conversion, which would be followed by baseband processing by one or more FPGAs. In the transmitting path, a digital stream would first be converted to an analog signal, which would then be up-converted to a selected frequency band before being applied to a transmitting power amplifier. The aforementioned band-pass filter in the receiving path would be a combination of resonant inductor-and-capacitor filters and switched band-pass filters. The overall combination would implement a switch function designed mathematically to exhibit desired frequency responses and to switch the signal in each frequency band to an analog-to-digital converter appropriate for that band to produce a digital intermediate-frequency signal for digital signal processing.

  3. Thermal efficiency of single-pass solar air collector

    SciTech Connect

    Ibrahim, Zamry; Ibarahim, Zahari; Yatim, Baharudin; Ruslan, Mohd Hafidz

    2013-11-27

    Efficiency of a finned single-pass solar air collector was studied. This paper presents the experimental study to investigate the effect of solar radiation and mass flow rate on efficiency. The fins attached at the back of absorbing plate to improve the thermal efficiency of the system. The results show that the efficiency is increased proportional to solar radiation and mass flow rate. Efficiency of the collector archived steady state when reach to certain value or can be said the maximum performance.

  4. 1996 Budget finally passed; NASA delivers bad news

    NASA Astrophysics Data System (ADS)

    Carlowicz, Michael

    Seven months, 13 continuing resolutions, and several furloughs into the 1996 fiscal year, the U.S. government and its besieged science agencies now have a budget. On April 25, H.R. 3019, the omnibus spending appropriation for the rest of fiscal 1996 was passed by Congress and, on April 26, President Clinton signed the $163 billion spending bill into law, providing funds for nine cabinet departments and 38 federal agencies through September 30, 1996.

  5. Physics/computer science. Passing messages between disciplines.

    PubMed

    Mézard, Marc

    2003-09-19

    Problems in computer science, such as error correction in information transfer and "satisfiability" in optimization, show phase transitions familiar from solid-state physics. In his Perspective, Mézard explains how recent advances in these three fields originate in similar "message passing" procedures. The exchange of elaborate messages between different variables and constraints, used in the study of phase transitions in physical systems, helps to make error correction and satisfiability codes more efficient.

  6. Novel Coaxial High Pass Filter Design for RF Applications

    SciTech Connect

    Eroglu, Abdullah

    2010-01-01

    The complete design of a novel coaxial high pass filter is given analytically and numerically for high power RF applications. The coaxial structure consists of two hollow concentric cylinders with a septum located between them at a single azimuthal angle. This septum provides a good high pass filter characteristics and mechanically holds two hollow cylinders together. The attenuation slope in the stop band with this structure is much sharper than the existing filter configurations. This gives faster transition time from stop band to pass band One end of the coaxial structure is closed and the other end is used as an output port. Excitation port is placed on the side walls of the outside cylinder. The design procedure proposed in this paper has been implemented to obtain a filter configuration at the lower end of the UHF range. The new filter is simulated using 3D electromagnetic simulator, HFSS. It is then constructed and measured. Simulation results are compared with the measured results. Good agreement between simulated and measured results has been observed

  7. Incentive Pass-through for Residential Solar Systems in California

    SciTech Connect

    Dong, C. G.; Wiser, Ryan; Rai, Varun

    2014-10-01

    The deployment of solar photovoltaic (PV) systems has grown rapidly over the last decade, partly because of various government incentives. In the United States, among the largest and longest-running incentives have been those established in California. Building on past research, this report addresses the still-unanswered question: to what degree have the direct PV incentives in California been passed through from installers to consumers? This report helps address this question by carefully examining the residential PV market in California (excluding a certain class of third-party-owned PV systems) and applying both a structural-modeling approach and a reduced-form regression analysis to estimate the incentive pass-through rate. The results suggest an average pass-through rate of direct incentives of nearly 100%, though with regional differences among California counties. While these results could have multiple explanations, they suggest a relatively competitive market and well-functioning subsidy program. Further analysis is required to determine whether similar results broadly apply to other states, to other customer segments, to all third-party-owned PV systems, or to all forms of financial incentives for solar (considering not only direct state subsidies, but also utility electric bill savings and federal tax incentives).

  8. Single-Pass Clustering Algorithm Based on Storm

    NASA Astrophysics Data System (ADS)

    Fang, LI; Longlong, DAI; Zhiying, JIANG; Shunzi, LI

    2017-02-01

    The dramatically increasing volume of data makes the computational complexity of traditional clustering algorithm rise rapidly accordingly, which leads to the longer time. So as to improve the efficiency of the stream data clustering, a distributed real-time clustering algorithm (S-Single-Pass) based on the classic Single-Pass [1] algorithm and Storm [2] computation framework was designed in this paper. By employing this kind of method in the Topic Detection and Tracking (TDT) [3], the real-time performance of topic detection arises effectively. The proposed method splits the clustering process into two parts: one part is to form clusters for the multi-thread parallel clustering, the other part is to merge the generated clusters in the previous process and update the global clusters. Through the experimental results, the conclusion can be drawn that the proposed method have the nearly same clustering accuracy as the traditional Single-Pass algorithm and the clustering accuracy remains steady, computing rate increases linearly when increasing the number of cluster machines and nodes (processing threads).

  9. Re-evaluating the NCLEX-RN passing standard.

    PubMed

    O'Neill, Thomas R; Marks, Casey M; Reynolds, Michelle

    2005-01-01

    Setting passing standards is a critical component of the NCLEX examination process. This research was conducted to provide sufficient information to the National Council of State Boards of Nursing's (NCSBN) Board of Directors to,make a decision regarding the passing standard of the NCLEX-RN. This article illustrates the standard setting process that NCSBN uses. Surveys of educators and employers, a modified Angoff procedure, the Beuk compromise, and global assessments by content experts were methods used. The Rasch model and a presumed ability distribution were used as the framework to integrate these diverse perspectives regarding minimal competence. The revised passing standard was -0.28 logits. For many of the minimal competence estimates, the author did not have authorization to release the information. In those instances, estimates and results were fabricated to be similar to the actual results, yet different enough as to not disclose confidential information. The fabricated results are clearly marked. In conclusion, a variety of approaches, sources, and perspectives are necessary for the establishment of fair and appropriate standards on the NCLEX-RN.

  10. 34 CFR 300.191 - Provisions for services under a by-pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Provisions for services under a by-pass. 300.191... EDUCATION OF CHILDREN WITH DISABILITIES State Eligibility By-Pass for Children in Private Schools § 300.191 Provisions for services under a by-pass. (a) Before implementing a by-pass, the Secretary consults...

  11. 22 CFR 9b.8 - Term and renewal of Department of State press building passes.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... building passes. 9b.8 Section 9b.8 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.8 Term and renewal of Department of State press building passes. (a) Department of State press building passes for U.S. citizens are issued with three...

  12. 26 CFR 301.6224(c)-2 - Pass-thru partner binds indirect partners.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 26 Internal Revenue 18 2010-04-01 2010-04-01 false Pass-thru partner binds indirect partners. 301... Pass-thru partner binds indirect partners. (a) Pass-thru partner binds unidentified indirect partners—(1) In general. If a pass-thru partner enters into a settlement agreement with the Internal...

  13. 34 CFR 300.198 - Continuation of a by-pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Continuation of a by-pass. 300.198 Section 300.198... CHILDREN WITH DISABILITIES State Eligibility By-Pass for Children in Private Schools § 300.198 Continuation of a by-pass. The Secretary continues a by-pass until the Secretary determines that the SEA, LEA...

  14. 9 CFR 315.1 - Carcasses and parts passed for cooking; rendering into lard or tallow.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Carcasses and parts passed for cooking... PARTS PASSED FOR COOKING § 315.1 Carcasses and parts passed for cooking; rendering into lard or tallow. Carcasses and parts passed for cooking may be rendered into lard in accordance with § 319.702 of...

  15. 20 CFR 416.1226 - What is a plan to achieve self-support (PASS)?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false What is a plan to achieve self-support (PASS... self-support (PASS)? (a) A PASS must— (1) Be designed especially for you; (2) Be in writing; (3) Be...: A Substantial Reduction Exists. Your SSI monthly payment amount is $101 and your PASS...

  16. 42 CFR 419.66 - Transitional pass-through payments: Medical devices.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Transitional pass-through payments: Medical devices... DEPARTMENT SERVICES Transitional Pass-through Payments § 419.66 Transitional pass-through payments: Medical devices. (a) General rule. CMS makes a pass-through payment for a medical device that meets...

  17. 76 FR 78144 - Amendment of Class E Airspace; Anaktuvuk Pass, AK

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-16

    ... Federal Aviation Administration 14 CFR Part 71 Amendment of Class E Airspace; Anaktuvuk Pass, AK AGENCY... airspace at Anaktuvuk Pass Airport, Anaktuvuk Pass, AK. The creation of two standard instrument approach... Federal Register a notice of proposed rulemaking (NPRM) to amend controlled airspace at Anaktuvuk Pass,...

  18. 20 CFR 416.1181 - What is a plan to achieve self-support (PASS)?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false What is a plan to achieve self-support (PASS... Self-Support § 416.1181 What is a plan to achieve self-support (PASS)? (a) A PASS must— (1) Be designed... Exists. Your SSI monthly payment amount is $101 and your PASS employment goal earnings will reduce...

  19. 26 CFR 301.6223(h)-1 - Responsibilities of pass-thru partner.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 26 Internal Revenue 18 2010-04-01 2010-04-01 false Responsibilities of pass-thru partner. 301.6223... Responsibilities of pass-thru partner. (a) In general. The pass-thru partner shall, within 30 days of receiving... tax matters partner, or another pass-thru partner, forward a copy of that notice or information to...

  20. 33 CFR 80.840 - Sabine Pass, TX to Galveston, TX.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Sabine Pass, TX to Galveston, TX... INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Eighth District § 80.840 Sabine Pass, TX to Galveston, TX. (a) A line drawn from the Sabine Pass East Jetty Light to the seaward end of the Sabine Pass...

  1. 22 CFR 9b.4 - Department of State building press pass for technical crews.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Department of State building press pass for... DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.4 Department of State building press pass for technical crews. Department of State press building passes are issued to members of television and radio technical crews...

  2. 34 CFR 300.192 - Notice of intent to implement a by-pass.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Notice of intent to implement a by-pass. 300.192... EDUCATION OF CHILDREN WITH DISABILITIES State Eligibility By-Pass for Children in Private Schools § 300.192 Notice of intent to implement a by-pass. (a) Before taking any final action to implement a by-pass,...

  3. 33 CFR 80.830 - Mississippi Passes, LA to Point Au Fer, LA.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Mississippi Passes, LA to Point... Passes, LA to Point Au Fer, LA. (a) A line drawn from the seaward extremity of the Southwest Pass West... Fishing Jetty Light. (d) A line drawn between the seaward extremity of the Belle Pass Jetties. (e) A...

  4. 75 FR 74029 - Sabine Pass LNG, L.P.; Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-30

    ... Energy Regulatory Commission Sabine Pass LNG, L.P.; Notice of Application November 22, 2010. Take notice that on November 12, 2010, Sabine Pass LNG, L.P. (Sabine Pass), 700 Milam Street, Suite 800, Houston... a redundant high pressure boil off gas compressor at its existing Sabine Pass LNG Terminal,...

  5. Analysis of Microstructure Refinement During Single-Pass and Multi-Pass Friction Stir Processing of Nial Propeller Bronze

    DTIC Science & Technology

    2010-09-01

    on an Optical Micrograph of the Transverse View of Single-Pass NAB. After [5]............................................... 6 Figure 4 . Vertical...deformed and 6 elongated but does not see the same refinement that is seen inside the SZ [ 4 ]. The grain structure right outside the TMAZ will also...including grinding, polishing, and electropolishing . The first step was to grind the surface using a Buehler ECOMET 4 Variable Speed Grinder

  6. Single pass Doppler positioning for Search and Rescue satellite missions

    NASA Technical Reports Server (NTRS)

    Schmid, P. E.; Vonbun, F. O.; Lynn, J. J.

    1976-01-01

    This paper describes the implementation of beacon location experiments involving the NASA Nimbus-6 and the Amateur Satellite Corporation (AMSAT) Oscar-6 and Oscar-7 spacecraft. The purpose of these experiments is to demonstrate the feasibility of determining the geographical location of a low power VHF 'distress beacon' via satellite. Doppler data collected during satellite passes is reduced in a mini-computer by means of a simple algorithm resulting in the simultaneous recovery of the unknown receiver coordinates and the unknown Doppler bias frequency. Results indicate point positioning to within a few kilometers - which is within the required accuracies for the positioning of downed aircraft for Search/Rescue missions.

  7. Charon Message-Passing Toolkit for Scientific Computations

    NASA Technical Reports Server (NTRS)

    VanderWijngaart, Rob F.; Yan, Jerry (Technical Monitor)

    2000-01-01

    Charon is a library, callable from C and Fortran, that aids the conversion of structured-grid legacy codes-such as those used in the numerical computation of fluid flows-into parallel, high- performance codes. Key are functions that define distributed arrays, that map between distributed and non-distributed arrays, and that allow easy specification of common communications on structured grids. The library is based on the widely accepted MPI message passing standard. We present an overview of the functionality of Charon, and some representative results.

  8. Forgotten Kirschner wire passing across the sigmoid colon.

    PubMed

    Matsumoto, Hiroshi; Yo, Shogen; Fukushima, Shinya; Osawa, Motoyasu; Murao, Takahiro; Ishii, Manabu; Fujita, Minoru; Shiotani, Akiko

    2017-04-01

    The Kirschner wire (K-wire) is used in the treatment of hip fractures, and migration of a K-wire into the pelvis with resultant colon injury is a very rare complication. We report a case in which a forgotten K-wire passing across the sigmoid colon was accidentally found by screening colonoscopy in a patient with no abdominal symptoms. Surgery was performed to remove the K-wire. Although the migration of a K-wire is extremely rare, it is important for it to be considered in patients with a history of orthopedic surgery.

  9. Low-pass spatial filtering of satellite radar data

    NASA Technical Reports Server (NTRS)

    Mueller, Paul W.; Hoffer, Roger N.

    1989-01-01

    Thirty-four low-pass spatial filter treatments were applied to a multi-angle SIR-B data set to reduce speckle effects and improve classification performance. These treatments were based on four algorithms: square mean, separable mean, square median, and separable recursive median. The filtered images were evaluated using both quantitative and qualitative techniques. It was determined that the square median algorithm implemented at two iterations with a window size of 3 by 3 produced the best overall results with the 28.5-m SIR-B data.

  10. Double passing the Kitt Peak 1-m Fourier transform spectrometer

    NASA Technical Reports Server (NTRS)

    Jennings, D. E.; Hubbard, R.; Brault, J. W.

    1985-01-01

    Attention is given to a simple technique for performing the conversion of the Kitt Peak 1-m Fourier transform spectrometer's dual input/output optical configuration to a double pass configuration that improves spectral resolution by a factor of 2. The modification is made by placing a flat mirror in the output beam from each cat's eye, retroreflecting the beams back through the cat's eyes to the first beam splitter. A single detector is placed at the second input port, which then becomes the instrument's output.

  11. PENN PASS: a program for graduates of foreign dental schools.

    PubMed

    Berthold, P; Lopez, N

    1994-01-01

    An increasing number of graduates of foreign dental schools who enroll in advanced standing programs to qualify for licensure calls for dental schools to be prepared to handle not only the curricular demands but also the growing cultural diversity among its student population. The "reeducation" of this student group not only meets the need of foreign dentists for an American degree but may also provide health professionals to service various ethnic populations whose language and culture they are able to understand and identify with. A survey of students and graduates of a two-year Program for Advanced Standing Students (PASS) for graduates of foreign dental schools representing 34 countries aimed to arrive at an understanding of this student group through characterization of the foreign dentists and identification of their attitudes and feelings toward various aspects of the program, the school and faculty and their experience of stress. This report includes description of the distinctive features of the program which cater to specific needs and concerns of this non-traditional group of dental students. PASS students are accepted on the basis of their grades in dental school in home country, scores in the National Dental Board Examination Part I, Test of English as Foreign Language (TOEFL), and ratings in personal interviews. They complete an intensive summer program consisting of didactic and laboratory courses which prepares them for integration with four-year students for the last two years of didactic and clinical curriculum. Cultural diversity seminars, a special English class, PASS class meetings and seminars are unique additions to their program and aim to assist them adjust to the educational, social and cultural systems in an American school. Results of the survey show a majority of the PASS students feel that they are part of the school and that there is someone in the school whom they can approach for problems. An understanding of their ethnic and

  12. Railroad Pass Evaluation Nevada-Utah Siting Area.

    DTIC Science & Technology

    1979-11-16

    Gadualw 4 (a) II 5660 N-S Grda None to Numeri Railroad & Big Sand Springs, NV. Curves Moderate COAL VALLEY NORTH Nal-1 (c) 4 5270 NE-SW ea None Low Sever...CRYSTAL WASH Gradual 4 (a) 4 4000 E-W Grda At Pass, Road Moderate SeveralPahroc & Pahranagat. NV. Curves’ CURRANT SUMMIT More than 4 (b) 14 7000 E-W Two...SeveraPine & Escalante. UT. Curves MULESHOE SUMMIT GradualLe UM IT 3 (a) 8 6450 NE-SW Grda None Moderate Numerou Lake & Muleshoe. NV. Curves MURRY SUMMIT More

  13. UAVSAR: Airborne L-band Radar for Repeat Pass Interferometry

    NASA Technical Reports Server (NTRS)

    Moes, Timothy R.

    2009-01-01

    The primary objectives of the UAVSAR Project were to: a) develop a miniaturized polarimetric L-band synthetic aperture radar (SAR) for use on an unmanned aerial vehicle (UAV) or piloted vehicle. b) develop the associated processing algorithms for repeat-pass differential interferometric measurements using a single antenna. c) conduct measurements of geophysical interest, particularly changes of rapidly deforming surfaces such as volcanoes or earthquakes. Two complete systems were developed. Operational Science Missions began on February 18, 2009 ... concurrent development and testing of the radar system continues.

  14. Vehicle passes detector based on multi-sensor analysis

    NASA Astrophysics Data System (ADS)

    Bocharov, D.; Sidorchuk, D.; Konovalenko, I.; Koptelov, I.

    2015-02-01

    The study concerned deals with a new approach to the problem of detecting vehicle passes in vision-based automatic vehicle classification system. Essential non-affinity image variations and signals from induction loop are the events that can be considered as detectors of an object presence. We propose several vehicle detection techniques based on image processing and induction loop signal analysis. Also we suggest a combined method based on multi-sensor analysis to improve vehicle detection performance. Experimental results in complex outdoor environments show that the proposed multi-sensor algorithm is effective for vehicles detection.

  15. Easy fabrication of a tunable high-pass birdcage resonator.

    PubMed

    Xu, Y; Tang, P

    1997-07-01

    A practical design for a high-pass birdcage resonator is presented. Precision seamless telescoping tubes were used for easy tuning of resonant frequency by adjusting the length of the coils. Three probes, of 4.4, 5.0, and 25.0 cm in diameter, respectively, were constructed and tested. An empirical formula is given that can be used to calculate the capacitance needed for a given frequency when the desired physical dimension and the number of elements of the coll are specified. A simple three-step procedure is suggested for easy fabrication of resonators that are routinely tunable over tens of megahertz.

  16. Can Lionel Messi's brain slow down time passing?

    PubMed

    Jafari, Sajad; Smith, Leslie Samuel

    2016-01-01

    It seems that seeing others in slow-motion by heroes does not belong only to movies. When Lionel Messi plays football, you can hardly see anything from him that other players cannot do. Then why he is not stoppable really? It seems the answer may be that opponents do not have enough time to do what they want; because in Messi's neural system, time passes slower. In differential equations that model a single neuron, this speed can be generated by multiplying an equal term in all equations. Or maybe interactions between neurons and the structure of neural networks play this role.

  17. Active messages versus explicit message passing under SUNMOS

    SciTech Connect

    Riesen, R.; Wheat, S.R.; Maccabe, A.B.

    1994-07-01

    In the past few years much effort has been devoted to finding faster and more convenient ways to exchange data between nodes of massively parallel distributed memory machines. One such approach, taken by Thorsten von Eicken et al. is called Active Messages. The idea is to hide message passing latency and continue to compute while data is being sent and delivered. The authors have implemented Active Messages under SUNMOS for the Intel Paragon and performed various experiments to determine their efficiency and utility. In this paper they concentrate on the subset of the Active Message layer that is used by the implementation of the Split-C library. They compare performance to explicit message passing under SUNMOS and explore new ways to support Split-C without Active Messages. They also compare the implementation to the original one on the Thinking Machines CM-5 and try to determine what the effects of low latency and low band-width versus high latency and high bandwidth are on user codes.

  18. How do spin waves pass through a bend?

    PubMed Central

    Xing, Xiangjun; Yu, Yongli; Li, Shuwei; Huang, Xiaohong

    2013-01-01

    Spin-wave devices hold great promise to be used in future information processing. Manipulation of spin-wave propagation inside the submicrometer waveguides is at the core of promoting the practical application of these devices. Just as in today's silicon-based chips, bending of the building blocks cannot be avoided in real spin-wave circuits. Here, we examine spin-wave transport in bended magnonic waveguides at the submicron scale using micromagnetic simulations. It is seen that the impact of the bend is relevant to the frequency of the passing spin wave. At the lowest frequencies, the spin wave continuously follows the waveguide in the propagation process. At the higher frequencies, however the bend acts as a mode converter for the passing spin wave, causing zigzag-like propagation path formed in the waveguide behind the bend. Additionally, we demonstrate a logic-NOT gate based on such a waveguide, which could be combined to perform logic-NAND operation. PMID:24129823

  19. Ring formation by tidal disruption of a passing body

    NASA Astrophysics Data System (ADS)

    Hyodo, Ryuki; Charnoz, Sébastien; Genda, Hidenori; Ohtsuki, Keiji

    2016-10-01

    The origin of rings around giant planets remains elusive. Here we investigate the tidal disruption of a passing object and the subsequent formation of planetary rings. First, we perform SPH simulations of the tidal destruction of differentiated objects with the mass of M~1022kg that experience close encounters with Saturn or Uranus. We find that about 0.1-10% of the mass of the passing body is gravitationally captured around the planet. However, these fragments are initially big chunks and have highly eccentric orbits around the planet. Therefore, in order to see their long-term evolution, we perform N-body simulations including the planet's oblateness up to J4 starting with data obtained from the SPH simulations. Our N-body simulations show that the chunks are tidally destructed during their next several orbits and become collections of smaller particles. Their individual orbits then start to precess incoherently around the planet's equator, which enhances their encounter velocities on longer-term evolution, resulting in more destructive impacts. These collisions would damp their eccentricities resulting in a progressive collapse of the debris cloud into a thin equatorial and low-eccentricity ring.

  20. Controls of pass-bands in asymmetric acoustic transmission

    NASA Astrophysics Data System (ADS)

    Sun, Hong-Xiang; Zhang, Shu-Yi; Yuan, Shou-Qi

    2016-12-01

    The controls of the pass-bands in an asymmetric acoustic transmission system are investigated numerically and experimentally, and the system consists of a periodical rectangular grating and two uniform brass plates in water. We reveal that the pass-band of the asymmetric acoustic transmission is closely related to the grating period, but is affected slightly by the brass plate thickness. Moreover, the transmittance can be improved by adjusting the grating period and other structural parameters simultaneously. The control method of the system has the advantages of wider frequency range and simple operation, which has great potential applications in ultrasonic devices. Project supported by the National Basic Research Program of China (Grant No. 2012CB921504), the Major Program of the National Natural Science Foundation of China (Grant No. 51239005), the National Natural Science Foundation of China (Grant Nos. 11174142 and 11404147), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20140519), the China Postdoctoral Science Foundation (Grant No. 2015M571672), the Training Project of Young Backbone Teachers of Jiangsu University, China, and the Research Fund for Advanced Talents of Jiangsu University, China (Grant No. 13JDG106).

  1. Passing messages between biological networks to refine predicted interactions.

    PubMed

    Glass, Kimberly; Huttenhower, Curtis; Quackenbush, John; Yuan, Guo-Cheng

    2013-01-01

    Regulatory network reconstruction is a fundamental problem in computational biology. There are significant limitations to such reconstruction using individual datasets, and increasingly people attempt to construct networks using multiple, independent datasets obtained from complementary sources, but methods for this integration are lacking. We developed PANDA (Passing Attributes between Networks for Data Assimilation), a message-passing model using multiple sources of information to predict regulatory relationships, and used it to integrate protein-protein interaction, gene expression, and sequence motif data to reconstruct genome-wide, condition-specific regulatory networks in yeast as a model. The resulting networks were not only more accurate than those produced using individual data sets and other existing methods, but they also captured information regarding specific biological mechanisms and pathways that were missed using other methodologies. PANDA is scalable to higher eukaryotes, applicable to specific tissue or cell type data and conceptually generalizable to include a variety of regulatory, interaction, expression, and other genome-scale data. An implementation of the PANDA algorithm is available at www.sourceforge.net/projects/panda-net.

  2. A cryogenic circulating advective multi-pass absorption cell

    NASA Astrophysics Data System (ADS)

    Stockett, M. H.; Lawler, J. E.

    2012-03-01

    A novel absorption cell has been developed to enable a spectroscopic survey of a broad range of polycyclic aromatic hydrocarbons (PAH) under astrophysically relevant conditions and utilizing a synchrotron radiation continuum to test the still controversial hypothesis that these molecules or their ions could be carriers of the diffuse interstellar bands. The cryogenic circulating advective multi-pass absorption cell resembles a wind tunnel; molecules evaporated from a crucible or injected using a custom gas feedthrough are entrained in a laminar flow of cryogenically cooled buffer gas and advected into the path of the synchrotron beam. This system includes a multi-pass optical White cell enabling absorption path lengths of hundreds of meters and a detection sensitivity to molecular densities on the order of 107 cm-3. A capacitively coupled radio frequency dielectric barrier discharge provides ionized and metastable buffer gas atoms for ionizing the candidate molecules via charge exchange and the Penning effect. Stronger than expected clustering of PAH molecules has slowed efforts to record gas phase PAH spectra at cryogenic temperatures, though such clusters may play a role in other interstellar phenomena.

  3. A cryogenic circulating advective multi-pass absorption cell.

    PubMed

    Stockett, M H; Lawler, J E

    2012-03-01

    A novel absorption cell has been developed to enable a spectroscopic survey of a broad range of polycyclic aromatic hydrocarbons (PAH) under astrophysically relevant conditions and utilizing a synchrotron radiation continuum to test the still controversial hypothesis that these molecules or their ions could be carriers of the diffuse interstellar bands. The cryogenic circulating advective multi-pass absorption cell resembles a wind tunnel; molecules evaporated from a crucible or injected using a custom gas feedthrough are entrained in a laminar flow of cryogenically cooled buffer gas and advected into the path of the synchrotron beam. This system includes a multi-pass optical White cell enabling absorption path lengths of hundreds of meters and a detection sensitivity to molecular densities on the order of 10(7) cm(-3). A capacitively coupled radio frequency dielectric barrier discharge provides ionized and metastable buffer gas atoms for ionizing the candidate molecules via charge exchange and the Penning effect. Stronger than expected clustering of PAH molecules has slowed efforts to record gas phase PAH spectra at cryogenic temperatures, though such clusters may play a role in other interstellar phenomena.

  4. Multi-Pass Approach for Mobile Terrestrial Laser Scanning

    NASA Astrophysics Data System (ADS)

    Nolan, J.; Eckels, R.; Evers, M.; Singh, R.; Olsen, M. J.

    2015-08-01

    Mobile Terrestrial Laser Scanning (MTLS) has been utilised for an increasing number of corridor surveys. Current MTLS surveys require that many targets be placed along the corridor to monitor the MTLS trajectory's accuracy. These targets enable surveyors to directly evaluate the magnitude of GNSS errors at regular intervals and can also be used to adjust the trajectory to the survey control. However, this "Multi-Target" approach (MTA) is an onerous task that can significantly reduce efficiency. It also is inconvenient to the travelling public, as lanes are often blocked and traffic slowed to permit surveyors to work safely along the road corridor. This paper introduces a "Multi-Pass" approach (MPA), which minimises the number of targets required for monitoring the GNSS-controlled trajectory while still maintaining strict engineering accuracies. MPA uses the power of multiple, independent MTLS passes with different GNSS constellations to generate a "Control Polyline" from the point cloud for the corridor. The Control Polyline can be considered as a statistically valid survey measurement and be incorporated in a network adjustment to strengthen a control network by identifying outliers. Results from a test survey at the MTLS course maintained by the Oregon Department of Transportation illustrate the effectiveness of this approach.

  5. Hybrid approximate message passing for generalized group sparsity

    NASA Astrophysics Data System (ADS)

    Fletcher, Alyson K.; Rangan, Sundeep

    2013-09-01

    We consider the problem of estimating a group sparse vector x ∈ Rn under a generalized linear measurement model. Group sparsity of x means the activity of different components of the vector occurs in groups - a feature common in estimation problems in image processing, simultaneous sparse approximation and feature selection with grouped variables. Unfortunately, many current group sparse estimation methods require that the groups are non-overlapping. This work considers problems with what we call generalized group sparsity where the activity of the different components of x are modeled as functions of a small number of boolean latent variables. We show that this model can incorporate a large class of overlapping group sparse problems including problems in sparse multivariable polynomial regression and gene expression analysis. To estimate vectors with such group sparse structures, the paper proposes to use a recently-developed hybrid generalized approximate message passing (HyGAMP) method. Approximate message passing (AMP) refers to a class of algorithms based on Gaussian and quadratic approximations of loopy belief propagation for estimation of random vectors under linear measurements. The HyGAMP method extends the AMP framework to incorporate priors on x described by graphical models of which generalized group sparsity is a special case. We show that the HyGAMP algorithm is computationally efficient, general and offers superior performance in certain synthetic data test cases.

  6. A cryogenic circulating advective multi-pass absorption cell

    SciTech Connect

    Stockett, M. H.; Lawler, J. E.

    2012-03-15

    A novel absorption cell has been developed to enable a spectroscopic survey of a broad range of polycyclic aromatic hydrocarbons (PAH) under astrophysically relevant conditions and utilizing a synchrotron radiation continuum to test the still controversial hypothesis that these molecules or their ions could be carriers of the diffuse interstellar bands. The cryogenic circulating advective multi-pass absorption cell resembles a wind tunnel; molecules evaporated from a crucible or injected using a custom gas feedthrough are entrained in a laminar flow of cryogenically cooled buffer gas and advected into the path of the synchrotron beam. This system includes a multi-pass optical White cell enabling absorption path lengths of hundreds of meters and a detection sensitivity to molecular densities on the order of 10{sup 7} cm{sup -3}. A capacitively coupled radio frequency dielectric barrier discharge provides ionized and metastable buffer gas atoms for ionizing the candidate molecules via charge exchange and the Penning effect. Stronger than expected clustering of PAH molecules has slowed efforts to record gas phase PAH spectra at cryogenic temperatures, though such clusters may play a role in other interstellar phenomena.

  7. Omnibus Science R&D Bill passes House

    NASA Astrophysics Data System (ADS)

    Carlowicz, Michael

    In a largely symbolic action that presages other initiatives in the management of federal science programs, the U.S. House of Representatives has passed H.R. 2405, the Omnibus Civilian Science Authorization Act of 1995. The immediate future of the bill remains clouded, as the Senate has not yet taken up the measure, and President Bill Clinton has threatened a veto.In a largely partisan vote—248 to 161— on October 13, the House formally adopted the bill sponsored by Rep. Robert Walker (R-Pa.) and the leadership of the House Science Committee. H.R. 2405 bundles seven traditionally separate authorization bills for research funding into one broad package. Each of the constituent parts of the omnibus bill has been passed in the House, and those individual authorizations will apply to current science appropriations under consideration by Congress. Those bills establish spending levels for the National Science Foundation (NSF), NASA, the Department of Energy (DOE), the National Institute of Standards and Technology (NIST), the National Oceanic and Atmospheric Administration (NOAA), and the Environmental Protection Agency (EPA).

  8. The Projected Impact on Passing Rates of Proposed Changes to the CLAST Passing Standards and Increased CLAST Passing Standards: The Impact on Ethnic Groups. Institutional Research Report Abstracts Numbers RR89-15 and RR89-17.

    ERIC Educational Resources Information Center

    Gabe, LiAnne C.

    When the College Level Academic Skills Test (CLAST) was mandated in Florida, a schedule of incremental increases in the required passing scores was legislated. The 1986 passing standards were scheduled to be increased in 1989. This change was projected to reduce by half the number of students admitted to upper-level status at Florida's colleges. A…

  9. A new approach to predicting partial recrystallization in the multi-pass hot rolling process

    NASA Astrophysics Data System (ADS)

    Choi, Sangwoo; Lee, Youngseog

    2002-02-01

    An exploratory approach to handling partial recrystallization in multi-pass hot rolling where the heterogeneity of steel microstructures is inherent is presented. The proposed model is based on a modification of the conventional model in which the microstructure of deformed austenite at each pass is simply taken as homogeneous during the multi-pass rolling. The usefulness of the modified model is demonstrated by applying it to a four-pass oval-round (or round-oval) rod rolling sequence. The pass-by-pass recrystallized fraction and austenite grain size (AGS) computed from the modified model are compared with those from the conventional model. The result showed that in multi-pass rolling at higher rolling speed, the recrystallization behavior and evolution of the austenite grain size at a given pass was strongly influenced by the modeling method of the partial recrystallization attributed to microstructural heterogeneity.

  10. Effect of skin-pass rolling direction on magnetic properties of semiprocessed nonoriented electrical steel sheets

    SciTech Connect

    Kurosaki, Y.; Shimazu, T.; Shiozaki, M.

    1999-09-01

    Effect of skin-pass rolling direction on magnetic properties and directionality in semiprocessed nonoriented electrical steel sheets produced by skin-pass rolling process was studied. Skin-pass rolling direction greatly affects magnetic properties and directionality. By control of skin-pass rolling direction, the value of B{sub 50} in the required directions such as 0{degree}, 90{degree} and circumferential direction can be adjusted and the value of B{sub 50} is higher than that of the usual skin-pass rolling direction of 0{degree}. The textures of the steel sheets developed after batch annealing varied with the skin-pass rolling directions and this result indicates that the residual strain energy by skin-pass rolling varies with skin-pass rolling directions.

  11. Single Pass Streaming BLAST on FPGAs*†

    PubMed Central

    Herbordt, Martin C.; Model, Josh; Sukhwani, Bharat; Gu, Yongfeng; VanCourt, Tom

    2008-01-01

    Approximate string matching is fundamental to bioinformatics and has been the subject of numerous FPGA acceleration studies. We address issues with respect to FPGA implementations of both BLAST- and dynamic-programming- (DP) based methods. Our primary contribution is a new algorithm for emulating the seeding and extension phases of BLAST. This operates in a single pass through a database at streaming rate, and with no preprocessing other than loading the query string. Moreover, it emulates parameters turned to maximum possible sensitivity with no slowdown. While current DP-based methods also operate at streaming rate, generating results can be cumbersome. We address this with a new structure for data extraction. We present results from several implementations showing order of magnitude acceleration over serial reference code. A simple extension assures compatibility with NCBI BLAST. PMID:19081828

  12. Risk-based scheduling of multiple search passes for UUVs

    NASA Astrophysics Data System (ADS)

    Baylog, John G.; Wettergren, Thomas A.

    2016-05-01

    This paper addresses selected computational aspects of collaborative search planning when multiple search agents seek to find hidden objects (i.e. mines) in operating environments where the detection process is prone to false alarms. A Receiver Operator Characteristic (ROC) analysis is applied to construct a Bayesian cost objective function that weighs and combines missed detection and false alarm probabilities. It is shown that for fixed ROC operating points and a validation criterion consisting of a prerequisite number of detection outcomes, an interval exists in the number of conducted search passes over which the risk objective function is supermodular. We show that this property is not retained beyond validation criterion boundaries. We investigate the use of greedy algorithms for distributing search effort and, in particular, examine the double greedy algorithm for its applicability under conditions of varying criteria. Numerical results are provided to demonstrate the effectiveness of the approach.

  13. Charon Message-Passing Toolkit for Scientific Computations

    NASA Technical Reports Server (NTRS)

    VanderWijngarrt, Rob F.; Saini, Subhash (Technical Monitor)

    1998-01-01

    The Charon toolkit for piecemeal development of high-efficiency parallel programs for scientific computing is described. The portable toolkit, callable from C and Fortran, provides flexible domain decompositions and high-level distributed constructs for easy translation of serial legacy code or design to distributed environments. Gradual tuning can subsequently be applied to obtain high performance, possibly by using explicit message passing. Charon also features general structured communications that support stencil-based computations with complex recurrences. Through the separation of partitioning and distribution, the toolkit can also be used for blocking of uni-processor code, and for debugging of parallel algorithms on serial machines. An elaborate review of recent parallelization aids is presented to highlight the need for a toolkit like Charon. Some performance results of parallelizing the NAS Parallel Benchmark SP program using Charon are given, showing good scalability. Some performance results of parallelizing the NAS Parallel Benchmark SP program using Charon are given, showing good scalability.

  14. Charon Message-Passing Toolkit for Scientific Computations

    NASA Technical Reports Server (NTRS)

    VanderWijngaart, Rob F.; Saini, Subhash (Technical Monitor)

    1998-01-01

    The Charon toolkit for piecemeal development of high-efficiency parallel programs for scientific computing is described. The portable toolkit, callable from C and Fortran, provides flexible domain decompositions and high-level distributed constructs for easy translation of serial legacy code or design to distributed environments. Gradual tuning can subsequently be applied to obtain high performance, possibly by using explicit message passing. Charon also features general structured communications that support stencil-based computations with complex recurrences. Through the separation of partitioning and distribution, the toolkit can also be used for blocking of uni-processor code, and for debugging of parallel algorithms on serial machines. An elaborate review of recent parallelization aids is presented to highlight the need for a toolkit like Charon. Some performance results of parallelizing the NAS Parallel Benchmark SP program using Charon are given, showing good scalability.

  15. [Percutaneous transluminal angioplasty in vascular by-passes].

    PubMed

    Rodríguez, J E; Fernández Guinea, O; López, V; Suárez Pereiro, M J; Reimunde, E; Cosío, J M; Barreiro, A

    1993-01-01

    Results from 21 cases of percutaneous transluminal angioplasties as a treatment of stenosed vascular by-pass from 16 patients, are presented. The technique took place in 10 cases at the aorto-femoral area, in others 10 cases at the popliteal-femoral area and, in the last one, at the carotid-subclavian area. Preliminary results were successful in all cases (100%). Follow-up showed a better long-term results at the aorto-femoral level. Considering the satisfactory results and also considering that, in case of negative results or re-stenosis, other surgical techniques could be performed, we conclude that the percutaneous transluminal angioplasty should be the first treatment for such of injuries.

  16. Approximate message passing with restricted Boltzmann machine priors

    NASA Astrophysics Data System (ADS)

    Tramel, Eric W.; Drémeau, Angélique; Krzakala, Florent

    2016-07-01

    Approximate message passing (AMP) has been shown to be an excellent statistical approach to signal inference and compressed sensing problems. The AMP framework provides modularity in the choice of signal prior; here we propose a hierarchical form of the Gauss-Bernoulli prior which utilizes a restricted Boltzmann machine (RBM) trained on the signal support to push reconstruction performance beyond that of simple i.i.d. priors for signals whose support can be well represented by a trained binary RBM. We present and analyze two methods of RBM factorization and demonstrate how these affect signal reconstruction performance within our proposed algorithm. Finally, using the MNIST handwritten digit dataset, we show experimentally that using an RBM allows AMP to approach oracle-support performance.

  17. Noise barrier for the Temuco ByPass Highway

    NASA Astrophysics Data System (ADS)

    Gerard, Christian; Campos, Aldo; Belfiore, Sergio

    2002-11-01

    Increases in traffic and the emergent Highway Concession Program created by the Public Works Ministry of the Chilean government, have led to the necessity of providing acoustic protection in inhabited areas in which the level of noise exceeds that allowed by the standard. Around the world, the installation of acoustic barriers has been one of the main measures of the controlling traffic noise. This is the case with the Temuco ByPass Highway, an extension of 21 km, located in a rural area typical of the environment and landscape of the South of Chile. A total of 6000 lineal meters of transparent acoustic barrier (Methacrylate) was installed. This barrier is the first one of its type to be installed in South America, and theoretical calculations and practical results are analyzed in this work. (To be presented in Spanish.)

  18. Boundary filters for vector particles passing parity breaking domains

    SciTech Connect

    Kolevatov, S. S.; Andrianov, A. A.

    2014-07-23

    The electrodynamics supplemented with a Lorenz and CPT invariance violating Chern-Simons (CS) action (Carrol-Field-Jackiw electrodynamics) is studied when the parity-odd medium is bounded by a hyperplane separating it from the vacuum. The solutions in both half-spaces are carefully discussed and for space-like boundary stitched on the boundary with help of the Bogolubov transformations. The presence of two different Fock vacua is shown. The passage of photons and massive vector mesons through a boundary between the CS medium and the vacuum of conventional Maxwell electrodynamics is investigated. Effects of reflection from a boundary (up to the total one) are revealed when vector particles escape to vacuum and income from vacuum passing the boundary.

  19. A Message-Passing Algorithm for Wireless Network Scheduling.

    PubMed

    Paschalidis, Ioannis Ch; Huang, Fuzhuo; Lai, Wei

    2015-10-01

    We consider scheduling in wireless networks and formulate it as Maximum Weighted Independent Set (MWIS) problem on a "conflict" graph that captures interference among simultaneous transmissions. We propose a novel, low-complexity, and fully distributed algorithm that yields high-quality feasible solutions. Our proposed algorithm consists of two phases, each of which requires only local information and is based on message-passing. The first phase solves a relaxation of the MWIS problem using a gradient projection method. The relaxation we consider is tighter than the simple linear programming relaxation and incorporates constraints on all cliques in the graph. The second phase of the algorithm starts from the solution of the relaxation and constructs a feasible solution to the MWIS problem. We show that our algorithm always outputs an optimal solution to the MWIS problem for perfect graphs. Simulation results compare our policies against Carrier Sense Multiple Access (CSMA) and other alternatives and show excellent performance.

  20. DFB fiber laser hydrophone with band-pass response.

    PubMed

    Zhang, Faxiang; Zhang, Wentao; Li, Fang; Liu, Yuliang

    2011-11-15

    A distributed-feedback fiber laser hydrophone with band-pass response is presented. The design of the hydrophone aims to equalize static pressure and eliminate signal aliasing of high-frequency acoustic components. Theoretical analysis is presented based on electro-acoustic theory. The experimental results agree well with the theory. The measured underwater responses show that the hydrophone has a pressure sensitivity of -170 dB re:pm/μPa over a bandwidth between 100 Hz and 500 Hz. A sensitivity reduction exceeding -35 dB is observed at 2500 Hz. The tested static pressure sensitivity of the hydrophone is -226 dB. The proposed fiber laser hydrophone of this kind is expected to have important application in deep water fiber-optic sonar systems with anti-aliasing, and the understanding gained through this work can be extended to a guide of hydrophone design for required filtering bandwidth.

  1. Laser superposition in multi-pass amplification process

    NASA Astrophysics Data System (ADS)

    Zhang, Ying; Liu, Lan-Qin; Wang, Wen-Yi; Huang, Wan-Qing; Geng, Yuan-Chao

    2015-02-01

    Physical model was established to describe the pulse superposition in multi-pass amplification process when the pulse reflected from the cavity mirror and the front and the end of the pulse encountered. Theoretical analysis indicates that pulse superposition will consume more inversion population than that consumed without superposition. The standing wave field will be formed when the front and the end of the pulse is coherent overlapped. The inversion population density is spatial hole-burning by the standing wave field. The pulse gain and pulse are affected by superposition. Based on this physical model, three conditions, without superposition, coherent superposition and incoherent superposition were compared. This study will give instructions for high power solid laser design.

  2. Mapping Mineralization in the Monitor Pass Mining District

    NASA Astrophysics Data System (ADS)

    Shoffner, J. D.; Calvin, W. M.

    2007-12-01

    The Leviathan Mine, located in the Monitor Pass mining district in Alpine county California, was previously an open pit sulfur mine that supplied a nearby operation in Yerington, Nevada with sulfur for copper oxide leaching. The area was first mined underground in the mid 1800s and by the 1950s became an open pit operation. A decade later, the sulfur became uneconomic to extract, leaving the company bankrupt. By the 1980s, the EPA had declared Leviathan Mine a Superfund site due to acid mine drainage into Leviathan creek. Remediation continues today, but high sulfur soils and the potential for acid generation is abundant in the Monitor Pass area. This discovery of iron sulfate on Mars motivated the acquisition of airborne and spaceborne data similar to datasets available for Mars. In addition, high spatial resolution mineral mapping could help identify high priority remediation targets within the mine site. Low resolution (30m per pixel) spaceborne data from ALI and ASTER sensors were combined into a 13-filter dataset to locate areas of interest and as an overview of the area. Initial results were promising, showing evidence for iron oxides and clay mineralization, with some areas suggesting sulfates. The combination of thermal infrared and shortwave infrared datasets optimizes the potential for mineral identification. Therefore, we planned dual hyperspectral acquitions. SEBASS thermal data (7-15μm) at 2m per pixel was acquired on July 16, 2007. ProSpecTIR V-S (0.43- 2.45μm) was acquired on August 17, 2007, also at 2m per pixel. Field spectra were collected concurrently with the SpecTIR flight. The high resolution data will be used to confirm and refine the findings from spaceborne results and be presented at the meeting.

  3. 3D characterization of the Astor Pass geothermal system, Nevada

    SciTech Connect

    Mayhew, Brett; Faulds, James E

    2013-10-19

    The Astor Pass geothermal system resides in the northwestern part of the Pyramid Lake Paiute Reservation, on the margins of the Basin and Range and Walker Lane tectonic provinces in northwestern Nevada. Seismic reflection interpretation, detailed analysis of well cuttings, stress field analysis, and construction of a 3D geologic model have been used in the characterization of the stratigraphic and structural framework of the geothermal area. The area is primarily comprised of middle Miocene Pyramid sequence volcanic and sedimentary rocks, nonconformably overlying Mesozoic metamorphic and granitic rocks. Wells drilled at Astor Pass show a ~1 km thick section of highly transmissive Miocene volcanic reservoir with temperatures of ~95°C. Seismic reflection interpretation confirms a high fault density in the geothermal area, with many possible fluid pathways penetrating into the relatively impermeable Mesozoic basement. Stress field analysis using borehole breakout data reveals a complex transtensional faulting regime with a regionally consistent west-northwest-trending least principal stress direction. Considering possible strike-slip and normal stress regimes, the stress data were utilized in a slip and dilation tendency analysis of the fault model, which suggests two promising fault areas controlling upwelling geothermal fluids. Both of these fault intersection areas show positive attributes for controlling geothermal fluids, but hydrologic tests show the ~1 km thick volcanic section is highly transmissive. Thus, focused upwellings along discrete fault conduits may be confined to the Mesozoic basement before fluids diffuse into the Miocene volcanic reservoir above. This large diffuse reservoir in the faulted Miocene volcanic rocks is capable of sustaining high pump rates. Understanding this type of system may be helpful in examining large, permeable reservoirs in deep sedimentary basins of the eastern Basin and Range and the highly fractured volcanic geothermal

  4. Parallelization of a hydrological model using the message passing interface

    USGS Publications Warehouse

    Wu, Yiping; Li, Tiejian; Sun, Liqun; Chen, Ji

    2013-01-01

    With the increasing knowledge about the natural processes, hydrological models such as the Soil and Water Assessment Tool (SWAT) are becoming larger and more complex with increasing computation time. Additionally, other procedures such as model calibration, which may require thousands of model iterations, can increase running time and thus further reduce rapid modeling and analysis. Using the widely-applied SWAT as an example, this study demonstrates how to parallelize a serial hydrological model in a Windows® environment using a parallel programing technology—Message Passing Interface (MPI). With a case study, we derived the optimal values for the two parameters (the number of processes and the corresponding percentage of work to be distributed to the master process) of the parallel SWAT (P-SWAT) on an ordinary personal computer and a work station. Our study indicates that model execution time can be reduced by 42%–70% (or a speedup of 1.74–3.36) using multiple processes (two to five) with a proper task-distribution scheme (between the master and slave processes). Although the computation time cost becomes lower with an increasing number of processes (from two to five), this enhancement becomes less due to the accompanied increase in demand for message passing procedures between the master and all slave processes. Our case study demonstrates that the P-SWAT with a five-process run may reach the maximum speedup, and the performance can be quite stable (fairly independent of a project size). Overall, the P-SWAT can help reduce the computation time substantially for an individual model run, manual and automatic calibration procedures, and optimization of best management practices. In particular, the parallelization method we used and the scheme for deriving the optimal parameters in this study can be valuable and easily applied to other hydrological or environmental models.

  5. Giant electron tails and passing electron pinch effects in tokamak-core turbulence.

    PubMed

    Hallatschek, K; Dorland, W

    2005-07-29

    The anomalous particle transport in a tokamak core is believed to be linked to the advection of magnetically trapped electrons alone, owing to the passing electrons maintaining a thermal equilibrium along the field lines. Surprisingly, in nonlinear numerical studies, the radial flux of passing electrons rivals that of the trapped ones. The strong interaction of passing electrons and electric fluctuations is mediated by long tails of the modes along the magnetic field, which are generated by the passing electrons in the first place.

  6. Generation of a sub-Poissonian state with quantum high- and low-pass filters

    SciTech Connect

    Wang Haibo; Li Yongmin; Odate, Satoru; Kobayashi, Takayoshi

    2005-07-15

    We introduce a quantum component, the quantum high- and low-pass filter, and analyze its output characteristic. It is shown that a quantum bandpass filter can be achieved by using passive linear optics and projection measurements. Furthermore, we show that the sub-Poissonian state can be generated by using a cascaded quantum low-pass filter and high-pass filter.

  7. Monolithic Microwave Integrated Circuit (MMIC) Frequency Doublers - 2nd Pass Correction

    DTIC Science & Technology

    2013-09-01

    Monolithic Microwave Integrated Circuit (MMIC) Frequency Doublers—2nd Pass Correction by John E. Penn ARL-TN-0580 September 2013...September 2013 Monolithic Microwave Integrated Circuit (MMIC) Frequency Doublers—2nd Pass Correction John E. Penn Sensors and Electron...COVERED (From - To) 4. TITLE AND SUBTITLE Monolithic Microwave Integrated Circuit (MMIC) Frequency Doublers–2nd Pass Correction 5a. CONTRACT NUMBER

  8. 77 FR 69440 - Information Collection; Limitations on Pass-Through Charges

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-19

    ...; Limitations on Pass-Through Charges AGENCY: Department of Defense (DOD), General Services Administration (GSA... regarding Limitations on Pass- Through Charges. Public comments are particularly invited on: Whether this... 9000- 0173, Limitations on Pass-Through Charges by any of the following methods: Regulations.gov :...

  9. 26 CFR 20.2056(b)-4 - Marital deduction; valuation of interest passing to surviving spouse.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... passing to surviving spouse. 20.2056(b)-4 Section 20.2056(b)-4 Internal Revenue INTERNAL REVENUE SERVICE... AUGUST 16, 1954 Taxable Estate § 20.2056(b)-4 Marital deduction; valuation of interest passing to... interest which passed from the decedent to his surviving spouse is to be determined as of the date of...

  10. 75 FR 77741 - Federal Acquisition Regulation; Limitation on Pass-Through Charges

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-13

    ... RIN 9000-AL27 Federal Acquisition Regulation; Limitation on Pass-Through Charges AGENCIES: Department... prescribe regulations to minimize excessive pass-through charges by contractors from subcontractors, or from... subcontractor receives indirect costs or profit/fee (i.e., pass-through charges) on work performed by ] a...

  11. 76 FR 21338 - Reopening of Scoping Period for the Northern Pass Transmission Line Project Environmental Impact...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-15

    ... Reopening of Scoping Period for the Northern Pass Transmission Line Project Environmental Impact Statement... (DOE) is reopening the public scoping period for the Northern Pass Transmission Line Project... environmental impacts from its proposal to grant a Presidential Permit to Northern Pass Transmission, LLC,...

  12. 76 FR 56354 - Proposed Amendment of Class E Airspace; Anaktuvuk Pass, AK

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-13

    ... Federal Aviation Administration 14 CFR Part 71 Proposed Amendment of Class E Airspace; Anaktuvuk Pass, AK...: This action proposes to revise Class E airspace at Anaktuvuk Pass, AK. The creation of two standard instrument approach procedures at the Anaktuvuk Pass Airport has made this action necessary to enhance...

  13. 14 CFR 61.35 - Knowledge test: Prerequisites and passing grades.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Knowledge test: Prerequisites and passing....35 Knowledge test: Prerequisites and passing grades. (a) An applicant for a knowledge test must have...) The Administrator shall specify the minimum passing grade for the knowledge test....

  14. 76 FR 34969 - Extension of Scoping Period for the Northern Pass Transmission Line Project Environmental Impact...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-15

    ... Extension of Scoping Period for the Northern Pass Transmission Line Project Environmental Impact Statement... (DOE) is reopening the public scoping period for the Northern Pass Transmission Line Project... being provided by Northern Pass, DOE is reopening the scoping period. DOE will determine the close...

  15. 19 CFR 4.1 - Boarding of vessels; cutter and dock passes.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Boarding of vessels; cutter and dock passes. 4.1... vessels; cutter and dock passes. (a) Every vessel arriving at a Customs port will be subject to such... of this paragraph. (c) A port director, in his discretion may issue a cutter pass on Customs...

  16. 33 CFR 110.195 - Mississippi River below Baton Rouge, LA, including South and Southwest Passes.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Rouge, LA, including South and Southwest Passes. 110.195 Section 110.195 Navigation and Navigable Waters....195 Mississippi River below Baton Rouge, LA, including South and Southwest Passes. (a) The Anchorage... river from mile 1.5 to mile 6.7 above Head of Passes, extending in width to 1600 feet from the...

  17. 75 FR 28643 - Pine Island, Matlacha Pass, Island Bay, and Caloosahatchee National Wildlife Refuges, Lee and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ... Fish and Wildlife Service Pine Island, Matlacha Pass, Island Bay, and Caloosahatchee National Wildlife... conservation plan and environmental assessment (Draft CCP/EA) for Pine Island, Matlacha Pass, Island Bay, and... Pass, Island Bay, and Caloosahatchee NWRs. We started the process through a notice in the...

  18. 77 FR 1870 - Safety Zone; Matlacha Bridge Construction, Matlacha Pass, Matlacha, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-12

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Matlacha Bridge Construction, Matlacha Pass... establishing a temporary safety zone on the waters of Matlacha Pass in the vicinity of the Matlacha Bridge in... system at the Matlacha Bridge, thereby closing the Matlacha Pass channel to marine traffic....

  19. 40 CFR 205.160-6 - Passing or failing under SEA.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Passing or failing under SEA. 205.160... ABATEMENT PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Motorcycles § 205.160-6 Passing or... the sample passes or fails (See applicable tables in Appendix II). If the number of failing...

  20. 26 CFR 1.67-2T - Treatment of pass-through entities (temporary).

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Treatment of pass-through entities (temporary..., and Taxable Income § 1.67-2T Treatment of pass-through entities (temporary). (a) Application of..., beneficiaries, participants, and others with respect to their interests in pass-through entities (as defined...

  1. 42 CFR 419.62 - Transitional pass-through payments: General rules.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Transitional pass-through payments: General rules... DEPARTMENT SERVICES Transitional Pass-through Payments § 419.62 Transitional pass-through payments: General... payments under §§ 419.64 and 419.66 in a budget neutral manner. (c) Uniform prospective reduction of...

  2. 77 FR 20719 - Safety Zone; Matlacha Bridge Construction, Matlacha Pass, Matlacha, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-06

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Matlacha Bridge Construction, Matlacha Pass... establishing a temporary safety zone on the waters of Matlacha Pass in the vicinity of the Matlacha Bridge in... Matlacha Pass channel to marine traffic. The construction poses a danger to mariners located in...

  3. 78 FR 5477 - Agency Information Collection Activities: InfoPass System, No Form Number; Extension, Without...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-25

    ... SECURITY U.S. Citizenship and Immigration Services Agency Information Collection Activities: InfoPass... Collection. (2) Title of the Form/Collection: InfoPass System. (3) Agency form number, if any, and the.... The InfoPass system allows an applicant or petitioner to schedule an interview appointment with...

  4. 78 FR 57372 - Northern Pass Transmission Line Project Environmental Impact Statement: Announcement of Change in...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-18

    ... Northern Pass Transmission Line Project Environmental Impact Statement: Announcement of Change in Public... amended Notice of Intent (NOI) to modify the scope of the Northern Pass Transmission Line Project... previously announced this change in public meeting location on both the Northern Pass EIS Web site at...

  5. 33 CFR 165.T08-290 - Safety Zone; Gulf of Mexico-Johns Pass, Florida.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Pass, Florida. 165.T08-290 Section 165.T08-290 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 165.T08-290 Safety Zone; Gulf of Mexico—Johns Pass, Florida. (a) Regulated area. The Coast Guard is...'s Pass Bridge, that includes all the waters from surface to bottom, within a 100-yard radius of...

  6. 9 CFR 310.6 - Carcasses and parts passed for cooking; marking.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Carcasses and parts passed for cooking... INSPECTION AND CERTIFICATION POST-MORTEM INSPECTION § 310.6 Carcasses and parts passed for cooking; marking. Carcasses and parts passed for cooking shall be marked conspicuously on the surface tissues thereof by...

  7. 14 CFR 399.82 - Passing off of carrier identity by affiliation between carriers.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Passing off of carrier identity by... Relating to Enforcement § 399.82 Passing off of carrier identity by affiliation between carriers. (a... other carriers to pass off by means of activities which are inconsistent with the minimum safeguards...

  8. 78 FR 72817 - Drawbridge Operation Regulation; Chef Menteur Pass, New Orleans, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-04

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Chef Menteur Pass, New Orleans, LA... across Chef Menteur Pass, mile 2.8, at New Orleans, Orleans Parish, Louisiana. The deviation is necessary... have a significant effect on these vessels. Vessels able to pass through the bridge in the...

  9. 75 FR 48278 - Defense Federal Acquisition Regulation Supplement; Excessive Pass-Through Charges

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-10

    ... Regulation Supplement; Excessive Pass-Through Charges AGENCY: Defense Acquisition Regulations System... ensures that pass-through charges on contracts or subcontracts that are entered into for or on behalf of... required DoD to prescribe regulations to ensure that pass-through charges on contracts or subcontracts...

  10. 45 CFR 303.52 - Pass-through of incentives to political subdivisions.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 2 2010-10-01 2010-10-01 false Pass-through of incentives to political..., DEPARTMENT OF HEALTH AND HUMAN SERVICES STANDARDS FOR PROGRAM OPERATIONS § 303.52 Pass-through of incentives... subdivisions as follows: (a) The State IV-D agency must develop a standard methodology for passing through...

  11. 77 FR 65898 - Agency Information Collection Activities: InfoPass System, No Form Number; Extension, Without...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-31

    ... SECURITY U.S. Citizenship and Immigration Services Agency Information Collection Activities: InfoPass...: Extension, Without Change, of a Currently Approved Collection. (2) Title of the Form/Collection: InfoPass... as a brief abstract: Primary: Individuals or households. The InfoPass system allows an applicant...

  12. 48 CFR 52.215-23 - Limitations on Pass-Through Charges.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Limitations on Pass... Clauses 52.215-23 Limitations on Pass-Through Charges. As prescribed in 15.408(n)(2), use the following clause: Limitations on Pass-Through Charges (OCT 2009) (a) Definitions. As used in this clause—...

  13. 33 CFR 80.835 - Point Au Fer, LA to Calcasieu Pass, LA.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Pass, LA. 80.835 Section 80.835 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... to Calcasieu Pass, LA. (a) A line drawn from Point Au Fer to Atchafalaya Channel Light 34, to Point... inlets from the Gulf of Mexico between South Point and Calcasieu Pass except as otherwise described...

  14. Getting Science Students to PASS-UIW: A Successful Collaboration between Students, Staff, and Faculty

    ERIC Educational Resources Information Center

    Ariza, Cristina; Davis, Julian M.; Frye, Michael; Harmsen, Earl

    2011-01-01

    This article explores the reasons that Peer Assisted Study Sessions (PASS) at the University of the Incarnate Word (UIW), commonly called PASS-UIW, has been successful in science courses at the University. The intent is to provide information for other institutions to launch, evaluate, or improve their own programs. PASS-UIW is a student-led…

  15. 75 FR 69990 - Application for Presidential Permit; Northern Pass Transmission LLC

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-16

    ... Application for Presidential Permit; Northern Pass Transmission LLC AGENCY: Office of Electricity Delivery and Energy Reliability, DOE. ACTION: Notice of application. SUMMARY: Northern Pass Transmission LLC (Northern Pass) has applied for a Presidential permit to construct, operate, maintain, and connect an...

  16. 75 FR 49849 - Defense Federal Acquisition Regulation Supplement; Excessive Pass-Through Charges (DFARS Case...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-16

    ...; Excessive Pass-Through Charges (DFARS Case 2006-D057) AGENCY: Defense Acquisition Regulations System... Federal Register on August 10, 2010, under DFARS Case 2006-D057, Excessive Pass-Through Charges. That...), under DFARS Case 2006-D057, Excessive Pass-Through Charges. That final rule deleted obsolete...

  17. 20 CFR 416.2095 - Pass-along of Federal benefit increases.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Pass-along of Federal benefit increases. 416... Pass-along of Federal benefit increases. (a) General. This section and the four sections that follow describe the rules for passing along increases in the Federal SSI benefit to recipients of...

  18. 9 CFR 312.3 - Official marks and devices to identify inspected and passed equine products.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... inspected and passed equine products. 312.3 Section 312.3 Animals and Animal Products FOOD SAFETY AND... § 312.3 Official marks and devices to identify inspected and passed equine products. (a) The official inspection legend required by § 316.12 or § 317.2 of this subchapter to identify inspected and passed...

  19. Factor Structure of the PASS Cognitive Tasks: A Reexamination of Naglieri et al. (1991).

    ERIC Educational Resources Information Center

    Kranzler, John H.; Weng, Li-Jen

    1995-01-01

    Investigated the factor structure of a battery of tasks hypothesized to measure the constructs of the planning, attention, and simultaneous-successive (PASS) process model of human cognition. Results suggest that the original PASS model provides an improper factor solution. Recommends further refinement of the PASS theory or tests. (RJM)

  20. 22 CFR 9b.4 - Department of State building press pass for technical crews.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Department of State building press pass for technical crews. 9b.4 Section 9b.4 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.4 Department of State building press pass for technical...

  1. 22 CFR 9b.5 - Temporary Department of State press building passes.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Temporary Department of State press building passes. 9b.5 Section 9b.5 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.5 Temporary Department of State press building passes. A...

  2. 22 CFR 9b.4 - Department of State building press pass for technical crews.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Department of State building press pass for technical crews. 9b.4 Section 9b.4 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.4 Department of State building press pass for technical...

  3. 22 CFR 9b.5 - Temporary Department of State press building passes.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Temporary Department of State press building passes. 9b.5 Section 9b.5 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.5 Temporary Department of State press building passes. A...

  4. 22 CFR 9b.5 - Temporary Department of State press building passes.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Temporary Department of State press building passes. 9b.5 Section 9b.5 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.5 Temporary Department of State press building passes. A...

  5. 22 CFR 9b.4 - Department of State building press pass for technical crews.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Department of State building press pass for technical crews. 9b.4 Section 9b.4 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.4 Department of State building press pass for technical...

  6. 22 CFR 9b.4 - Department of State building press pass for technical crews.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Department of State building press pass for technical crews. 9b.4 Section 9b.4 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.4 Department of State building press pass for technical...

  7. Course Pass Rates in Fall 1989. Enrollment Analysis EA91-1.

    ERIC Educational Resources Information Center

    Clagett, Craig A.; Diehl, Patricia

    In 1990, a study was conducted at Prince George's Community College (PGCC) to determine the percentage of students enrolled in courses in the fall term who received passing grades, and to examine these pass rates by course, academic discipline, and division. The study also analyzed student pass rates by gender, age, race, and admission status.…

  8. 22 CFR 9b.5 - Temporary Department of State press building passes.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Temporary Department of State press building passes. 9b.5 Section 9b.5 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.5 Temporary Department of State press building passes. A...

  9. The effect of interruption probability in lattice model of two-lane traffic flow with passing

    NASA Astrophysics Data System (ADS)

    Peng, Guanghan

    2016-11-01

    A new lattice model is proposed by taking into account the interruption probability with passing for two-lane freeway. The effect of interruption probability with passing is investigated about the linear stability condition and the mKdV equation through linear stability analysis and nonlinear analysis, respectively. Furthermore, numerical simulation is carried out to study traffic phenomena resulted from the interruption probability with passing in two-lane system. The results show that the interruption probability with passing can improve the stability of traffic flow for low reaction coefficient while the interruption probability with passing can destroy the stability of traffic flow for high reaction coefficient on two-lane highway.

  10. The effect of wake passing on turbine blade film cooling

    NASA Astrophysics Data System (ADS)

    Heidmann, James David

    The effect of upstream blade row wake passing on the showerhead film cooling performance of a downstream turbine blade has been investigated through a combination of experimental and computational studies. The experiments were performed in a steady-flow annular turbine cascade facility equipped with an upstream rotating row of cylindrical rods to produce a periodic wake field similar to that found in an actual turbine. Spanwise, chordwise, and temporal resolution of the blade surface temperature were achieved through the use of an array of nickel thin-film surface gauges covering one unit cell of showerhead film hole pattern. Film effectiveness and Nusselt number values were determined for a test matrix of various injectants, injectant blowing ratios, and wake Strouhal numbers. Results indicated a demonstrable reduction in film effectiveness with increasing Strouhal number, as well as the expected increase in film effectiveness with blowing ratio. An equation was developed to correlate the span-average film effectiveness data. The primary effect of wake unsteadiness was found to be correlated well by a chordwise-constant decrement of 0.094*St. Measurable spanwise film effectiveness variations were found near the showerhead region, but meaningful unsteady variations and downstream spanwise variations were not found. Nusselt numbers were less sensitive to wake and injection changes. Computations were performed using a three-dimensional turbulent Navier-Stokes code which was modified to model wake passing and film cooling. Unsteady computations were found to agree well with steady computations provided the proper time-average blowing ratio and pressure/suction surface flow split are matched. The remaining differences were isolated to be due to the enhanced mixing in the unsteady solution caused by the wake sweeping normally on the pressure surface. Steady computations were found to be in excellent agreement with experimental Nusselt numbers, but to overpredict

  11. The Effect of Wake Passing on Turbine Blade Film Cooling

    NASA Technical Reports Server (NTRS)

    Heidmann, James David

    1996-01-01

    The effect of upstream blade row wake passing on the showerhead film cooling performance of a downstream turbine blade has been investigated through a combination of experimental and computational studies. The experiments were performed in a steady-flow annular turbine cascade facility equipped with an upstream rotating row of cylindrical rods to produce a periodic wake field similar to that found in an actual turbine. Spanwise, chordwise, and temporal resolution of the blade surface temperature were achieved through the use of an array of nickel thin-film surface gauges covering one unit cell of showerhead film hole pattern. Film effectiveness and Nusselt number values were determined for a test matrix of various injectants, injectant blowing ratios, and wake Strouhal numbers. Results indicated a demonstratable reduction in film effectiveness with increasing Strouhal number, as well as the expected increase in film effectiveness with blowing ratio. An equation was developed to correlate the span-average film effectiveness data. The primary effect of wake unsteadiness was found to be correlated well by a chordwise-constant decrement of 0.094-St. Measurable spanwise film effectiveness variations were found near the showerhead region, but meaningful unsteady variations and downstream spanwise variations were not found. Nusselt numbers were less sensitive to wake and injection changes. Computations were performed using a three-dimensional turbulent Navier-Stokes code which was modified to model wake passing and film cooling. Unsteady computations were found to agree well with steady computations provided the proper time-average blowing ratio and pressure/suction surface flow split are matched. The remaining differences were isolated to be due to the enhanced mixing in the unsteady solution caused by the wake sweeping normally on the pressure surface. Steady computations were found to be in excellent agreement with experimental Nusselt numbers, but to overpredict

  12. A systematic review of the effectiveness of remediation interventions to improve NCLEX-RN pass rates.

    PubMed

    Pennington, Tracy D; Spurlock, Darrell

    2010-09-01

    First-time NCLEX-RN pass rates are important measures of educational quality in prelicensure nursing education programs. Licensure pass rate problems has been the subject of countless nursing education articles and studies over the past several decades. To improve NCLEX-RN pass rates, remediation is often prescribed for students who have academic performance deficits. This article presents a systematic review of studies on remediation interventions and their effects on NCLEX-RN pass rates. Most studies of remediation and its effects on licensure pass rates are descriptive program evaluation reports. The overall quality of studies included in this review is uneven but generally low. Nursing education researchers should focus on conducting higher quality intervention studies in which the fidelity of remediation interventions can be examined. Viewing licensure pass rates from a process improvement perspective and accounting for pass rate variations could also change the nature of scholarship on this topic.

  13. Nonlinear Effects in Single-Pass ICRF Heating

    NASA Technical Reports Server (NTRS)

    Arefiev, A. V.; Breizman, B. N.

    1999-01-01

    The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) concept employs Ion Cyclotron Resonant Frequency (ICRF) heating as the main power deposition mechanism. Since the ions accelerate to the full energy in a single pass through the cyclotron resonance, their response to the RF-field will be essentially nonlinear - hence the motivation to amend the commonly used linear approach to the problem. In a collisionless plasma, the energy gain of an accelerated ion is limited by the time the particle spends at the resonance. This time is affected by: (1) incident flow velocity, (2) longitudinal grad B force, (3) ambipolar electric field, and (4) ponderomotive force of the RF-field. Our analysis shows that the grad B force is the dominant factor at low to moderate levels of RF-power. We present nonlinear scaling for the energy gain and the absorption efficiency with RF-power and plasma parameters. We also demonstrate that the nonlinear regime exhibits a steep decrease in the plasma density at the resonance.

  14. Intestinal first-pass glucuronidation activities of selected dihydroxyflavones.

    PubMed

    Wong, Yin Cheong; Zhang, Li; Lin, Ge; Zuo, Zhong

    2009-01-21

    Flavonoids have low bioavailabilities due to extensive intestinal first-pass metabolisms, especially glucuronidation. The present study aimed to evaluate the intestinal glucuronidation of dihydroxyflavones and provide more information on their structure-activity relationships. Seven dihydroxyflavones, namely 3,7-, 5,7-, 6,7-, 7,8-, 2',7-, 3',7-, and 4',7-dihydroxyflavone and a monohydroxyflavone, 7-hydroxyflavone, were investigated by incubating each hydroxyflavone at various concentrations with either human jejunum microsome or rat intestinal microsome. Two mono-glucuronides were identified for each dihydroxyflavone. For human jejunum microsome, most of the studied dihydroxyflavones demonstrated greater glucuronidation activities than that of 7-hydroxyflavone except for 3,7-dihydroxyflavone and 4',7-dihydroxyflavone. 3',7-dihydroxyflavone had the greatest intrinsic clearance which was at least seven times greater than that of all other dihydroxyflavones. In addition, species difference in glucuronidation activity was observed with human jejunum microsome higher than rat intestinal microsome for all hydroxyflavones except for 3,7-dihydroxyflavone. The results further demonstrated that the hydroxyl group positions do affect the intestinal glucuronidation activity of hydroxyflavones. Increasing the number of hydroxyl groups on A- or B-ring (except for 4'-OH) would enhance the glucuronidation activity of flavones, whereas adding a 3-OH on C-ring might not. Furthermore, existence of hydroxyl group at 3' position may enhance the glucuronidation activity of flavonoids.

  15. Chaos pass filter: linear response of synchronized chaotic systems.

    PubMed

    Zeeb, Steffen; Kestler, Johannes; Kanter, Ido; Kinzel, Wolfgang

    2013-04-01

    The linear response of synchronized time-delayed chaotic systems to small external perturbations, i.e., the phenomenon of chaos pass filter, is investigated for iterated maps. The distribution of distances, i.e., the deviations between two synchronized chaotic units due to external perturbations on the transferred signal, is used as a measure of the linear response. It is calculated numerically and, for some special cases, analytically. Depending on the model parameters this distribution has power law tails in the region of synchronization leading to diverging moments of distances. This is a consequence of multiplicative and additive noise in the corresponding linear equations due to chaos and external perturbations. The linear response can also be quantified by the bit error rate of a transmitted binary message which perturbs the synchronized system. The bit error rate is given by an integral over the distribution of distances and is calculated analytically and numerically. It displays a complex nonmonotonic behavior in the region of synchronization. For special cases the distribution of distances has a fractal structure leading to a devil's staircase for the bit error rate as a function of coupling strength. The response to small harmonic perturbations shows resonances related to coupling and feedback delay times. A bidirectionally coupled chain of three units can completely filter out the perturbation. Thus the second moment and the bit error rate become zero.

  16. Complete Genes May Pass from Food to Human Blood

    PubMed Central

    Spisák, Sándor; Solymosi, Norbert; Ittzés, Péter; Bodor, András; Kondor, Dániel; Vattay, Gábor; Barták, Barbara K.; Sipos, Ferenc; Galamb, Orsolya; Tulassay, Zsolt; Szállási, Zoltán; Rasmussen, Simon; Sicheritz-Ponten, Thomas; Brunak, Søren; Molnár, Béla; Csabai, István

    2013-01-01

    Our bloodstream is considered to be an environment well separated from the outside world and the digestive tract. According to the standard paradigm large macromolecules consumed with food cannot pass directly to the circulatory system. During digestion proteins and DNA are thought to be degraded into small constituents, amino acids and nucleic acids, respectively, and then absorbed by a complex active process and distributed to various parts of the body through the circulation system. Here, based on the analysis of over 1000 human samples from four independent studies, we report evidence that meal-derived DNA fragments which are large enough to carry complete genes can avoid degradation and through an unknown mechanism enter the human circulation system. In one of the blood samples the relative concentration of plant DNA is higher than the human DNA. The plant DNA concentration shows a surprisingly precise log-normal distribution in the plasma samples while non-plasma (cord blood) control sample was found to be free of plant DNA. PMID:23936105

  17. Containing Epidemic Outbreaks by Message-Passing Techniques

    NASA Astrophysics Data System (ADS)

    Altarelli, F.; Braunstein, A.; Dall'Asta, L.; Wakeling, J. R.; Zecchina, R.

    2014-04-01

    The problem of targeted network immunization can be defined as the one of finding a subset of nodes in a network to immunize or vaccinate in order to minimize a tradeoff between the cost of vaccination and the final (stationary) expected infection under a given epidemic model. Although computing the expected infection is a hard computational problem, simple and efficient mean-field approximations have been put forward in the literature in recent years. The optimization problem can be recast into a constrained one in which the constraints enforce local mean-field equations describing the average stationary state of the epidemic process. For a wide class of epidemic models, including the susceptible-infected-removed and the susceptible-infected-susceptible models, we define a message-passing approach to network immunization that allows us to study the statistical properties of epidemic outbreaks in the presence of immunized nodes as well as to find (nearly) optimal immunization sets for a given choice of parameters and costs. The algorithm scales linearly with the size of the graph, and it can be made efficient even on large networks. We compare its performance with topologically based heuristics, greedy methods, and simulated annealing on both random graphs and real-world networks.

  18. Characterizing Computation-Communication Overlap in Message-Passing Systems

    SciTech Connect

    David E. Bernholdt; Jarek Nieplocha; P. Sadayappan; Aniruddha G. Shet; Vinod Tipparaju

    2008-01-31

    Effective overlap of computation and communication is a well understood technique for latency hiding and can yield significant performance gains for applications on high-end computers. In this report, we describe an instrumentation framework developed for message-passing systems to characterize the degree of overlap of communication with computation in the execution of parallel applications. The inability to obtain precise time-stamps for pertinent communication events is a significant problem, and is addressed by generation of minimum and maximum bounds on achieved overlap. The overlap measures can aid application developers and system designers in investigating scalability issues. The approach has been used to instrument two MPI implementations as well as the ARMCI system. The implementation resides entirely within the communication library and thus integrates well with existing approaches that operate outside the library. The utility of the framework is demonstrated by analyzing communication-computation overlap for micro-benchmarks and the NAS benchmarks, and the insights obtained are used to modify the NAS SP benchmark, resulting in improved overlap.

  19. Sound generation by a centrifugal pump at blade passing frequency

    SciTech Connect

    Morgenroth, M.; Weaver, D.S.

    1996-12-01

    This paper reports the results of an experimental study of the pressure pulsations produced by a centrifugal volute pump at its blade passing frequency and their amplification by acoustic resonance in a connected piping system. Detailed measurements were made of the pressure fluctuations in the piping as a function of pump speed and flow rate. A semi-empirical model was used to separate acoustic standing waves from hydraulic pressure fluctuations. The effects of modifying the cut-water geometry were also studied, including the use of flow visualization to observe the flow behavior at the cut-water. The results suggest that the pump may act as an acoustic pressure or velocity source, depending on the flow rate. At conditions of acoustic resonance, the pump acted as an open termination of the piping, i.e., as a node in the acoustic pressure standing waves. Rounding the cut-water had the effect of reducing the amplitude of acoustic resonance, apparently because of the ability of the stagnation point to move and thereby reduce the vorticity generated. A notable example of this acoustic resonance in the Primary Heat Transport (PHT) system at Ontario Hydro`s Darlington nuclear power station.

  20. Single-pass memory system evaluation for multiprogramming workloads

    NASA Technical Reports Server (NTRS)

    Conte, Thomas M.; Hwu, Wen-Mei W.

    1990-01-01

    Modern memory systems are composed of levels of cache memories, a virtual memory system, and a backing store. Varying more than a few design parameters and measuring the performance of such systems has traditionally be constrained by the high cost of simulation. Models of cache performance recently introduced reduce the cost simulation but at the expense of accuracy of performance prediction. Stack-based methods predict performance accurately using one pass over the trace for all cache sizes, but these techniques have been limited to fully-associative organizations. This paper presents a stack-based method of evaluating the performance of cache memories using a recurrence/conflict model for the miss ratio. Unlike previous work, the performance of realistic cache designs, such as direct-mapped caches, are predicted by the method. The method also includes a new approach to the problem of the effects of multiprogramming. This new technique separates the characteristics of the individual program from that of the workload. The recurrence/conflict method is shown to be practical, general, and powerful by comparing its performance to that of a popular traditional cache simulator. The authors expect that the availability of such a tool will have a large impact on future architectural studies of memory systems.

  1. Automated Performance Prediction of Message Passing Parallel Programs

    NASA Technical Reports Server (NTRS)

    Block, Robert J.; Mehra, Pankaj; Sarukkai, Sekhar; Woodrow, Thomas (Technical Monitor)

    1994-01-01

    As the trend toward massively parallel processing continues, the need for tools that can predict scalability trends becomes greater. While high level languages Eke HPF have come into greater use, explicit message-passing programs proliferate, and will probably do so for some time, thanks to the onslaught of standards such as MPI. Much work has been done to create simple models that represent important characteristics of parallel programs, such as latency, network contention, and communication volume. But many of these methods still require a substantial manual effort to represent an application in the model's format. The YAPP ("Yet Another Performance Predictor") tool is an attempt to automate the formation of first-order expressions for completion time, with a minimum of programmer assistance. The content of this paper is as follows: First, we explore the implementation details of YAPP, and illustrate with examples some of the reasons that automatic prediction is difficult. In the following sections, we present the results of four applications, using execution traces on the Intel i860, analyze the error in YAPP's predictions, explain the limitations of our implementation, and mention possible future additions. In particular, we illustrate techniques used to identify pipeline communication patterns, and demonstrate how compiler analysis and regression are combined to automate the prediction process.

  2. Parallelized direct execution simulation of message-passing parallel programs

    NASA Technical Reports Server (NTRS)

    Dickens, Phillip M.; Heidelberger, Philip; Nicol, David M.

    1994-01-01

    As massively parallel computers proliferate, there is growing interest in findings ways by which performance of massively parallel codes can be efficiently predicted. This problem arises in diverse contexts such as parallelizing computers, parallel performance monitoring, and parallel algorithm development. In this paper we describe one solution where one directly executes the application code, but uses a discrete-event simulator to model details of the presumed parallel machine such as operating system and communication network behavior. Because this approach is computationally expensive, we are interested in its own parallelization specifically the parallelization of the discrete-event simulator. We describe methods suitable for parallelized direct execution simulation of message-passing parallel programs, and report on the performance of such a system, Large Application Parallel Simulation Environment (LAPSE), we have built on the Intel Paragon. On all codes measured to date, LAPSE predicts performance well typically within 10 percent relative error. Depending on the nature of the application code, we have observed low slowdowns (relative to natively executing code) and high relative speedups using up to 64 processors.

  3. Assessment of Traffic Noise on Highway Passing from Urban Agglomeration

    NASA Astrophysics Data System (ADS)

    Vijay, Ritesh; Kori, Chandan; Kumar, Manoj; Chakrabarti, T.; Gupta, Rajesh

    2014-09-01

    Assessment of traffic noise pollution in developing countries is complex due to heterogeneity in traffic conditions like traffic volume, road width, honking, etc. To analyze the impact of such variables, a research study was carried out on a national highway passing from an urban agglomeration. Traffic volume and noise levels (L10, Lmin, Lmax, Leq and L90) were measured during morning and evening peak hours. Contribution of noise by individual vehicle was estimated using passenger car noise unit. Extent of noise pollution and impact of noisy vehicles were estimated using noise pollution level and traffic noise index, respectively. Noise levels were observed to be above the prescribed Indian and International standards. As per audio spectrum analysis of traffic noise, honking contributed an additional 3-4 dB(A) noise. Based on data analysis, a positive relationship was observed between noise levels and honking while negative correlation was observed between noise levels and road width. The study suggests that proper monitoring and analysis of traffic data is required for better planning of noise abatement measures.

  4. Cooled Multi-pass Cells for Visible and Infrared Spectroscopy

    NASA Astrophysics Data System (ADS)

    Mickelson, M. E.; Steyert, D. W.; Sirota, J. M.; Reuter, D. C.

    2001-11-01

    Modeling of Planetary Atmospheres depends in a crucial way on the availability of high quality laboratory data for the molecular constituents assumed for the atmosphere in question. This paper describes two new cooled multi-pass cells which are based on a design originally articulated by Chernin and Baraskala1 and which are specifically suited for long path length spectroscopy of gaseous samples. This type of cell was first implemented at Denison University2 for use in the visible and near infrared in conjunction with tunable dye and diode lasers. The second, at GSFC, is designed for use in the mid to far infrared for use with tunable lead-salt diode lasers. The Denison 3 meter cell is equipped with two sets of first surface Pyrex mirrors using enhanced silver and dielectric coatings. The GSFC 2 meter cell uses gold-coated aluminum mirrors. Details of the mechanical and thermal design and operating specifications such as temperature and pressure ranges will be given along with examples of typical spectra obtained for water vapor and methane. 1 S. M. Chernin and E. G. Barskaya, Appl. Opt. 30, 51 (1991). 2 M. E. Mickelson, L.E. Larson and A. Schubert, J. Geophys. Res. 96, E2 17.507 (1991). Work at Denison University was performed under NASA Planetary Atmospheres Program grant NAG5-4341. Work at Goddard Space Flight Center was supported by NASA Planetary Atmospheres Program RTOP 344-33-80.

  5. Modeling the Mechanosensitivity of Neutrophils Passing through a Narrow Channel.

    PubMed

    Wu, Tenghu; Feng, James J

    2015-12-01

    Recent experiments have found that neutrophils may be activated after passing through microfluidic channels and filters. Mechanical deformation causes disassembly of the cytoskeleton and a sudden drop of the elastic modulus of the neutrophil. This fluidization is followed by either activation of the neutrophil with protrusion of pseudopods or a uniform recovery of the cytoskeleton network with no pseudopod. The former occurs if the neutrophil traverses the narrow channel at a slower rate. We propose a chemo-mechanical model for the fluidization and activation processes. Fluidization is treated as mechanical destruction of the cytoskeleton by sufficiently rapid bending. Loss of the cytoskeleton removes a pathway by which cortical tension inhibits the Rac protein. As a result, Rac rises and polarizes through a wave-pinning mechanism if the chemical reaction rate is fast enough. This leads to recovery and reinforcement of the cytoskeleton at the front of the neutrophil, and hence protrusion and activation. Otherwise the Rac signal returns to a uniform pre-deformation state and no activation occurs. Thus, mechanically induced neutrophil activation is understood as the competition between two timescales: that of chemical reaction and that of mechanical deformation. The model captures the main features of the experimental observation.

  6. Message passing with a limited number of DMA byte counters

    DOEpatents

    Blocksome, Michael; Chen, Dong; Giampapa, Mark E.; Heidelberger, Philip; Kumar, Sameer; Parker, Jeffrey J.

    2011-10-04

    A method for passing messages in a parallel computer system constructed as a plurality of compute nodes interconnected as a network where each compute node includes a DMA engine but includes only a limited number of byte counters for tracking a number of bytes that are sent or received by the DMA engine, where the byte counters may be used in shared counter or exclusive counter modes of operation. The method includes using rendezvous protocol, a source compute node deterministically sending a request to send (RTS) message with a single RTS descriptor using an exclusive injection counter to track both the RTS message and message data to be sent in association with the RTS message, to a destination compute node such that the RTS descriptor indicates to the destination compute node that the message data will be adaptively routed to the destination node. Using one DMA FIFO at the source compute node, the RTS descriptors are maintained for rendezvous messages destined for the destination compute node to ensure proper message data ordering thereat. Using a reception counter at a DMA engine, the destination compute node tracks reception of the RTS and associated message data and sends a clear to send (CTS) message to the source node in a rendezvous protocol form of a remote get to accept the RTS message and message data and processing the remote get (CTS) by the source compute node DMA engine to provide the message data to be sent.

  7. Stopping dynamics of ions passing through correlated honeycomb clusters

    NASA Astrophysics Data System (ADS)

    Balzer, Karsten; Schlünzen, Niclas; Bonitz, Michael

    2016-12-01

    A combined nonequilibrium Green functions-Ehrenfest dynamics approach is developed that allows for a time-dependent study of the energy loss of a charged particle penetrating a strongly correlated system at zero and finite temperatures. Numerical results are presented for finite inhomogeneous two-dimensional Fermi-Hubbard models, where the many-electron dynamics in the target are treated fully quantum mechanically and the motion of the projectile is treated classically. The simulations are based on the solution of the two-time Dyson (Keldysh-Kadanoff-Baym) equations using the second-order Born, third-order, and T -matrix approximations of the self-energy. As application, we consider protons and helium nuclei with a kinetic energy between 1 and 500 keV/u passing through planar fragments of the two-dimensional honeycomb lattice and, in particular, examine the influence of electron-electron correlations on the energy exchange between projectile and electron system. We investigate the time dependence of the projectile's kinetic energy (stopping power), the electron density, the double occupancy, and the photoemission spectrum. Finally, we show that, for a suitable choice of the Hubbard model parameters, the results for the stopping power are in fair agreement with ab initio simulations for particle irradiation of single-layer graphene.

  8. Wake of a beam passing through a diffraction radiation target

    NASA Astrophysics Data System (ADS)

    Xiang, Dao; Huang, Wen-Hui; Lin, Yu-Zheng; Park, Sung-Ju; Ko, In Soo

    2008-02-01

    Diffraction radiation (DR) is one of the most promising candidates for electron beam diagnostics for International Linear Collider and x-ray free electron lasers due to its nonintercepting characteristic. One of the potential problems that may restrict its applications in real-time monitoring beam parameters is the wakefield generated by the presence of the DR target. In this paper, a comparative study of the wakefield and the backward DR (BDR) field is performed to clarify the relationship between them. The wakefield is studied with a particle-in-cell code MAGIC and the DR field is calculated based on virtual photon diffraction model. It is found that they have the same frequency spectrum and angular distribution, which indicates that the difference only exists in the subjective terminology. The longitudinal and transverse wake for a beam passing through a DR target is calculated for a general case when the beam’s velocity is smaller than that of light. The resulted emittance growth and energy spread growth due to the short range wakefield is estimated and found to be permissible. In real measurement where BDR propagates in the direction perpendicular to the trajectory, it may add a transverse kick to the beam as a requirement of momentum conservation. The kick is found to be large enough to degrade the performance of accelerator driven facilities and needs to be corrected.

  9. Martian Clouds Pass By on a Winter Afternoon

    NASA Technical Reports Server (NTRS)

    2007-01-01

    NASA's Mars Exploration Rover Opportunity captured a view of wispy afternoon clouds, not unlike fair weather clouds on Earth, passing overhead on the rover's 956th sol, or Martian day (Oct. 2, 2006). With Opportunity facing northeast, the clouds appear to drift gently toward the west in this movie taken with the rover's navigation camera.

    The 10 frames, taken 32 seconds apart, show the formation and evolution of what are likely mid-level, convective water clouds. Such clouds are common near Mars' equator at this time of the Martian year. They have been observed by both of NASA's Mars Exploration Rovers, by satellites orbiting Mars, and by the Hubble Space Telescope. In this case, the clouds appear to develop at a fixed location, in the center of the frame about 25 degrees above the horizon. This style of origin suggests that a thermal plume is rising over a surface feature. In spite of apparent winds aloft, the thermal plume appears to remain stationary for the 5-minute duration of the movie.

    Though scientists have determined from the images that the wind bearing is east-northeast, approximately 80 degrees, it is not possible on the basis of the movie to unambiguously determine the height and speed of the clouds. Scientists estimate, based on models of atmospheric wind profiles and the apparent displacement of the clouds, that all of the clouds in the movie are at about the same height somewhere between 5 kilometers and 25 kilometers (3 to 20 miles) above the surface. The clouds are estimated to be moving at 2.5 meters per second, if they are low, to 12.5 meters per second, if they are high (8 feet per second to 41 feet per second).

    Like clouds on Earth, these Martian clouds are probably composed of ice crystals and possibly supercooled water droplets. They are similar in appearance to terrestrial cirrocumulus or high altocumulus clouds. On Earth, such clouds are relatively transient and consist of small, individual cloudlets arranged in rippled

  10. Sediment pass-through, an alternative to reservoir dredging

    SciTech Connect

    Harrison, L.L.; Lee, W.H.; Tu, S.

    1995-12-31

    Pacific Gas and Electric Company (PG&E) is studying an alternative {open_quotes}Sediment Management Plan{close_quotes} (SMP) to control sediments at Rock Creek Reservoir and the downstream Cresta Reservoir on the North Fork Feather River in Plumas County. The reservoirs are part of the 182,000 kW Rock Creek-Cresta Project hydroelectric development. Approximately 5.4 million cubic meters of sediments, deposited in the two reservoirs since they were placed in service in 1949 and 1950, partially obstruct the dams` low level outlets and pipe inlets supplying water for spillway gate operations. The sediments jeopardize the reliable and efficient operation of the dams and powerhouses. The SMP includes retrofitting Rock Creek and Cresta Dams with additional low-level gated outlets and modification of trash racks at the existing low level outlet pipes at each dam to improve sediment pass-through (SPT) capacity during high flows. Also, to enable construction of the dam modifications and to facilitate the initiation of SPT operation, dredging of approximately 46,000 cubic meters at Rock Creek Reservoir and 57,000 cubic meters at Cresta Reservoir can be accomplished using a new slurry pump dredging technology to minimize turbidity and re-suspension of solids during dredging. It is proposed to deposit the sediment on the reservoir bottoms, upstream of the areas to be dredged. The dredged sediments subsequently would be flushed from the reservoirs during SPT operations to ultimately be deposited in the dead storage volume of a large downstream reservoir, Lake Oroville. The SPT management plan supersedes more costly plans for major dredging, and may preclude the need for future maintenance dredging at the reservoirs.

  11. Creep Deformation and Rupture Behavior of Single- and Dual-Pass 316LN Stainless-Steel-Activated TIG Weld Joints

    NASA Astrophysics Data System (ADS)

    Vijayanand, V. D.; Vasudevan, M.; Ganesan, V.; Parameswaran, P.; Laha, K.; Bhaduri, A. K.

    2016-06-01

    Creep deformation and rupture behavior of single-pass and dual-pass 316LN stainless steel (SS) weld joints fabricated by an autogenous activated tungsten inert gas welding process have been assessed by performing metallography, hardness, and conventional and impression creep tests. The fusion zone of the single-pass joint consisted of columnar zones adjacent to base metals with a central equiaxed zone, which have been modified extensively by the thermal cycle of the second pass in the dual-pass joint. The equiaxed zone in the single-pass joint, as well as in the second pass of the dual-pass joint, displayed the lowest hardness in the joints. In the dual-pass joint, the equiaxed zone of the first pass had hardness comparable to the columnar zone. The hardness variations in the joints influenced the creep deformation. The equiaxed and columnar zone in the first pass of the dual-pass joint was more creep resistant than that of the second pass. Both joints possessed lower creep rupture life than the base metal. However, the creep rupture life of the dual-pass joint was about twofolds more than that of the single-pass joint. Creep failure in the single-pass joint occurred in the central equiaxed fusion zone, whereas creep cavitation that originated in the second pass was blocked at the weld pass interface. The additional interface and strength variation between two passes in the dual-pass joint provides more restraint to creep deformation and crack propagation in the fusion zone, resulting in an increase in the creep rupture life of the dual-pass joint over the single-pass joint. Furthermore, the differences in content, morphology, and distribution of delta ferrite in the fusion zone of the joints favors more creep cavitation resistance in the dual-pass joint over the single-pass joint with the enhancement of creep rupture life.

  12. Assessing the efficacy of single-pass backpack electrofishing to characterize fish community structure

    USGS Publications Warehouse

    Meador, M.R.; McIntyre, J.P.; Pollock, K.H.

    2003-01-01

    Two-pass backpack electrofishing data collected as part of the U.S. Geological Survey's National Water-Quality Assessment Program were analyzed to assess the efficacy of single-pass backpack electrofishing. A two-capture removal model was used to estimate, within 10 river basins across the United States, proportional fish species richness from one-pass electrofishing and probabilities of detection for individual fish species. Mean estimated species richness from first-pass sampling (ps1) ranged from 80.7% to 100% of estimated total species richness for each river basin, based on at least seven samples per basin. However, ps1 values for individual sites ranged from 40% to 100% of estimated total species richness. Additional species unique to the second pass were collected in 50.3% of the samples. Of these, cyprinids and centrarchids were collected most frequently. Proportional fish species richness estimated for the first pass increased significantly with decreasing stream width for 1 of the 10 river basins. When used to calculate probabilities of detection of individual fish species, the removal model failed 48% of the time because the number of individuals of a species was greater in the second pass than in the first pass. Single-pass backpack electrofishing data alone may make it difficult to determine whether characterized fish community structure data are real or spurious. The two-pass removal model can be used to assess the effectiveness of sampling species richness with a single electrofishing pass. However, the two-pass removal model may have limited utility to determine probabilities of detection of individual species and, thus, limit the ability to assess the effectiveness of single-pass sampling to characterize species relative abundances. Multiple-pass (at least three passes) backpack electrofishing at a large number of sites may not be cost-effective as part of a standardized sampling protocol for large-geographic-scale studies. However, multiple-pass

  13. Note: Laser frequency shifting by using two novel triple-pass acousto-optic modulator configurations

    SciTech Connect

    Carlos-Lopez, E. de; Lopez, J. M.; Lopez, S.; Espinosa, M. G.; Lizama, L. A.

    2012-11-15

    We report the design of two novel triple-pass acousto-optic modulator systems. These designs are extensions of the well known acousto-optic modulator (AOM) double-pass configuration, which eliminates the angle dependence of the diffracted beam with respect to the modulation frequency. In a triple-pass system, however, the frequency dependence of the angle does not disappear but the frequency shift is larger, spanning 3 times the AOM central frequency. In some applications, such as optically pumped Cesium-beam frequency standards, the frequencies of the two laser beams remain fixed and a triple-pass optical system can be used to reduce to one the number of lasers used in such atomic clocks. The two triple-pass configurations use either a retro-reflecting mirror, or a right angle prism to pass for third time the laser beam through the AOM, obtaining diffraction efficiencies of about 27% and 44%, respectively.

  14. Whispering-Gallery-Mode Tunable Narrow-Band-Pass Filter

    NASA Technical Reports Server (NTRS)

    Savchenkov, Anatoliy; Iltchenko, Vladimir; Matsko, Andrey; Maleki, Lute

    2004-01-01

    An experimental tunable, narrow-band-pass electro-optical filter is based on a whispering-gallery resonator. This device is a prototype of tunable filters needed for the further development of reconfigurable networking wavelength-division multiplexers and communication systems that utilize radio-frequency (more specifically, microwave) subcarrier signals on optical carrier signals. The characteristics of whispering-gallery resonators that make them attractive for such applications include high tuning speed, compactness, wide tuning range, low power consumption, and compatibility with single-mode optical fibers. In addition, relative to Fabry-Perot resonators, these devices offer advantages of greater robustness and lower cost. As described in several prior NASA Tech Briefs articles, a whispering-gallery resonator is a spheroidal, disk-like, or toroidal body made of a highly transparent material. It is so named because it is designed to exploit whispering-gallery electromagnetic modes, which are waveguide modes that propagate circumferentially and are concentrated in a narrow toroidal region centered on the equatorial plane and located near the outermost edge. The experimental whispering-gallery tunable filter (see figure) is made from a disk of Z-cut LiNbO3 of 4.8-mm diameter and 0.17-mm thickness. The perimeter of the disk is rounded to a radius of curvature of 100 m. Metal coats on the flat faces of the disk serve as electrodes for exploiting the electro-optical effect in LiNbO3 for tuning. There is no metal coat on the rounded perimeter region, where the whispering-gallery modes propagate. Light is coupled from an input optical fiber into the whispering-gallery modes by means of a diamond prism. Another diamond prism is used to couple light from the whispering-gallery modes to an output optical fiber. This device is designed and operated to exploit transverse magnetic (TM) whispering- gallery modes, rather than transverse electric (TE) modes because the

  15. HUBBLE PHOTOGRAPHS WARPED GALAXY AS CAMERA PASSES MILESTONE

    NASA Technical Reports Server (NTRS)

    2002-01-01

    observations of ESO 510-G13, WFPC2 passed the milestone of taking its 100,000th image since its installation in the telescope by shuttle astronauts in 1993. Image Credit: NASA and the Hubble Heritage Team (STScI/AURA) Acknowledgment: C. Conselice (U. Wisconsin/STScI)

  16. Theoretical and experimental analysis of double-pass ytterbium-doped fiber amplifier

    NASA Astrophysics Data System (ADS)

    Zhang, Pengfei; Su, Rongtao; Huang, Long; Du, Daiyan; Yang, Lijia

    2016-11-01

    We theoretically and experimentally demonstrate a double-pass ytterbium-doped fiber amplifier. First, we numerically analyze the impact of fiber length on the amplifier. In our experiment, a laser seed with output power of 100 μW and wavelength of 1064 nm is amplified to 51.2 mW with a signal gain of 27.1 dB. With this double-pass configuration, amplified spontaneous emission (ASE) is effectively suppressed to more than 30 dB. Compared with single pass configuration, it is found that double-pass amplification configuration enhances the gain coefficient and improves the signal-to-noise ratio.

  17. Draft Site Management and Monitoring Plan, Mississippi River, Southwest Pass, Louisiana

    EPA Pesticide Factsheets

    Joint Public Notice and Notice of Availability for Draft Mississippi River, Southwest Pass, Louisiana Site Management and Monitoring Plan for the Maintenance Dredging Ocean Dredged Material Disposal Site

  18. Intel NX to PVM 3.2 message passing conversion library

    NASA Technical Reports Server (NTRS)

    Arthur, Trey; Nelson, Michael L.

    1993-01-01

    NASA Langley Research Center has developed a library that allows Intel NX message passing codes to be executed under the more popular and widely supported Parallel Virtual Machine (PVM) message passing library. PVM was developed at Oak Ridge National Labs and has become the defacto standard for message passing. This library will allow the many programs that were developed on the Intel iPSC/860 or Intel Paragon in a Single Program Multiple Data (SPMD) design to be ported to the numerous architectures that PVM (version 3.2) supports. Also, the library adds global operations capability to PVM. A familiarity with Intel NX and PVM message passing is assumed.

  19. A Study of Single Pass Ion Effects at the ALS

    SciTech Connect

    Byrd, J.M.; Thomson, J.; Chao, A.W.; Heifets, S.; Minty, M.G.; Seeman, J.T.; Stupakov, G.V.; Zimmermann, F.; Raubenheimer, T.O.; /CERN

    2011-09-13

    We report the results of experiments on a 'fast beam-ion instability' at the Advanced Light Source (ALS). This ion instability, which can arise even when the ions are not trapped over multiple beam passages, will likely be important for many future accelerators. In our experiments, we filled the ALS storage ring with helium gas, raising the pressure approximately two orders of magnitude above the nominal pressure. With gaps in the bunch train large enough to avoid conventional (multi-turn) ion trapping, we observed a factor of 2-3 increase in the vertical beam size along with coherent beam oscillations which increased along the bunch train. Ion trapping has long been recognized as a potential limitation in electron storage rings. The ions, generated by beam-gas collisions, become trapped in the negative potential of the beam and accumulate over multiple beam passages. The trapped ions are then observed to cause a number of deleterious effects such as an increasing beam phase space, a broadening and shifting of the beam transverse oscillation frequencies (tunes), collective beam instabilities, and beam lifetime reductions. All of these effects are of concern for the next generation of accelerators, such as the B-factories or damping rings for future linear colliders, which will store high beam currents with closely spaced bunches and ultra-low beam emittances. One of the standard solutions used to prevent ion trapping is to include a gap in the bunch train which is long compared to the bunch spacing. In this case, the ions are first strongly-focused by the passing electron bunches and then over-focused in the gap. With a sufficiently large gap, the ions can be driven to large amplitudes where they form a diffuse halo and do not affect the beam. In this paper, we describe experiments that study a new regime of transient ion instabilities predicted to arise in future electron storage rings, and linacs with bunch trains. These future rings and linacs, which will be

  20. 9 CFR 315.2 - Carcasses and parts passed for cooking; utilization for food purposes after cooking.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Carcasses and parts passed for cooking... PARTS PASSED FOR COOKING § 315.2 Carcasses and parts passed for cooking; utilization for food purposes after cooking. Carcasses and parts passed for cooking may be used for the preparation of meat...

  1. 9 CFR 315.3 - Disposal of products passed for cooking if not handled according to this part.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Disposal of products passed for... OF CARCASSES AND PARTS PASSED FOR COOKING § 315.3 Disposal of products passed for cooking if not handled according to this part. Products passed for cooking if not handled and processed in...

  2. 75 FR 65232 - Security Zones; Sabine Bank Channel, Sabine Pass Channel and Sabine-Neches Waterway, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-22

    ... measures necessary. In addition, it establishes security zones encompassing the mooring basins of LNG carriers while they are moored at the Golden Pass LNG facility in Sabine, TX and/or the Sabine Pass LNG... ] mooring basins at the Golden Pass LNG facility in Sabine, TX and the Sabine Pass LNG facility located...

  3. 76 FR 1519 - Security Zones; Sabine Bank Channel, Sabine Pass Channel and Sabine-Neches Waterway, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-11

    ... encompassing the mooring basins of LNG carriers while they are moored at the Golden Pass LNG facility in Sabine, TX and/or the Sabine Pass LNG facility located in Cameron Parish, LA. DATES: This rule is effective... mooring basins at the Golden Pass LNG facility in Sabine, TX and the Sabine Pass LNG facility located...

  4. Medical Educators' Social Acts of Explaining Passing Underperformance in Students: A Qualitative Study

    ERIC Educational Resources Information Center

    Monrouxe, Lynn V.; Rees, Charlotte E.; Lewis, Natalie J.; Cleland, Jennifer A.

    2011-01-01

    Passing underperformance in students is ubiquitous across health and social care educators and is intimately related to the subsequent welfare of patients: underperforming students may become underperforming practitioners. This paper aims to examine how medical educators construct passing underperformance through an analysis of their social act of…

  5. Catalytic reactor for promoting a chemical reaction on a fluid passing therethrough

    NASA Technical Reports Server (NTRS)

    Roychoudhury, Subir (Inventor); Pfefferle, William C. (Inventor)

    2001-01-01

    A catalytic reactor with an auxiliary heating structure for raising the temperature of a fluid passing therethrough whereby the catalytic reaction is promoted. The invention is a apparatus employing multiple electrical heating elements electrically isolated from one another by insulators that are an integral part of the flow path. The invention provides step heating of a fluid as the fluid passes through the reactor.

  6. 26 CFR 301.6224(c)-2 - Pass-thru partner binds indirect partners.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Service with respect to partnership items, that agreement binds all indirect partners holding an interest in that partnership through the pass-thru partner except those indirect partners who have been... in that partnership, either directly or indirectly through a different pass-thru partner, then...

  7. STONES: Passing a stone in your sleep might be easier than you think

    PubMed Central

    Chi, Thomas; Stoller, Marshall L.

    2014-01-01

    Passing kidney calculi can be excruciatingly painful for patients, likened to childbirth in intensity. The mechanism of the simple act of passing a stone, however, is not well understood. A recent research article examined a novel approach for optimizing kidney stone clearance—sleep position, a simple noninvasive concept that might improve urinary stone passage. PMID:21878879

  8. 16 CFR 301.18 - Passing off domestic furs as imported furs prohibited.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 16 Commercial Practices 1 2014-01-01 2014-01-01 false Passing off domestic furs as imported furs... ACTS OF CONGRESS RULES AND REGULATIONS UNDER FUR PRODUCTS LABELING ACT Regulations § 301.18 Passing off domestic furs as imported furs prohibited. No domestic furs nor fur products shall be labeled, invoiced...

  9. 16 CFR 301.18 - Passing off domestic furs as imported furs prohibited.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 16 Commercial Practices 1 2011-01-01 2011-01-01 false Passing off domestic furs as imported furs... ACTS OF CONGRESS RULES AND REGULATIONS UNDER FUR PRODUCTS LABELING ACT Regulations § 301.18 Passing off domestic furs as imported furs prohibited. No domestic furs nor fur products shall be labeled, invoiced...

  10. 16 CFR 301.18 - Passing off domestic furs as imported furs prohibited.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 16 Commercial Practices 1 2013-01-01 2013-01-01 false Passing off domestic furs as imported furs... ACTS OF CONGRESS RULES AND REGULATIONS UNDER FUR PRODUCTS LABELING ACT Regulations § 301.18 Passing off domestic furs as imported furs prohibited. No domestic furs nor fur products shall be labeled, invoiced...

  11. 16 CFR 301.18 - Passing off domestic furs as imported furs prohibited.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 1 2012-01-01 2012-01-01 false Passing off domestic furs as imported furs... ACTS OF CONGRESS RULES AND REGULATIONS UNDER FUR PRODUCTS LABELING ACT Regulations § 301.18 Passing off domestic furs as imported furs prohibited. No domestic furs nor fur products shall be labeled, invoiced...

  12. 75 FR 62512 - Sabine Pass Liquefaction, LLC; Application for Long-Term Authorization To Export Liquefied...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-12

    ... of the Energy Policy Act of 1992. Protests, motions to intervene, notices of intervention, and... Pass LNG). DATES: Protests, motions to intervene or notices of intervention, as applicable, requests... increased liquidity and trade at prices established by market forces. Sixth, Sabine Pass maintains that...

  13. 42 CFR 419.66 - Transitional pass-through payments: Medical devices.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 3 2012-10-01 2012-10-01 false Transitional pass-through payments: Medical devices...: Medical devices. (a) General rule. CMS makes a pass-through payment for a medical device that meets the... under the criteria in paragraph (c) of this section. (b) Eligibility. A medical device must meet...

  14. 42 CFR 419.66 - Transitional pass-through payments: Medical devices.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 3 2011-10-01 2011-10-01 false Transitional pass-through payments: Medical devices... devices. (a) General rule. CMS makes a pass-through payment for a medical device that meets the... under the criteria in paragraph (c) of this section. (b) Eligibility. A medical device must meet...

  15. 42 CFR 419.66 - Transitional pass-through payments: Medical devices.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 3 2014-10-01 2014-10-01 false Transitional pass-through payments: Medical devices...: Medical devices. (a) General rule. CMS makes a pass-through payment for a medical device that meets the... under the criteria in paragraph (c) of this section. (b) Eligibility. A medical device must meet...

  16. 42 CFR 419.66 - Transitional pass-through payments: Medical devices.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 3 2013-10-01 2013-10-01 false Transitional pass-through payments: Medical devices...: Medical devices. (a) General rule. CMS makes a pass-through payment for a medical device that meets the... under the criteria in paragraph (c) of this section. (b) Eligibility. A medical device must meet...

  17. Gender Differences in Planning, Attention, Simultaneous, and Successive (PASS) Cognitive Processes and Achievement.

    ERIC Educational Resources Information Center

    Naglieri, Jack A.; Rojahn, Johannes

    2001-01-01

    Examined 1,100 boys and 1,100 girls who matched the U.S. population using the Planning, Attention, Simultaneous, Successive (PASS) cognitive-processing theory, built on the neuropsychological work of A.R. Luria (1973). Results illustrate that the PASS theory offers a useful way to examine gender differences in cognitive performance. (BF)

  18. 14 CFR 399.82 - Passing off of carrier identity by affiliation between carriers.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false Passing off of carrier identity by... Relating to Enforcement § 399.82 Passing off of carrier identity by affiliation between carriers. (a... points served by both carriers should preserve the identity of the individual carriers; (5) Where...

  19. 14 CFR 399.82 - Passing off of carrier identity by affiliation between carriers.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 4 2014-01-01 2014-01-01 false Passing off of carrier identity by... Relating to Enforcement § 399.82 Passing off of carrier identity by affiliation between carriers. (a... points served by both carriers should preserve the identity of the individual carriers; (5) Where...

  20. 14 CFR 399.82 - Passing off of carrier identity by affiliation between carriers.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 4 2012-01-01 2012-01-01 false Passing off of carrier identity by... Relating to Enforcement § 399.82 Passing off of carrier identity by affiliation between carriers. (a... points served by both carriers should preserve the identity of the individual carriers; (5) Where...

  1. 14 CFR 399.82 - Passing off of carrier identity by affiliation between carriers.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 4 2013-01-01 2013-01-01 false Passing off of carrier identity by... Relating to Enforcement § 399.82 Passing off of carrier identity by affiliation between carriers. (a... points served by both carriers should preserve the identity of the individual carriers; (5) Where...

  2. Try, Try, Again: A Two-Step Strategy for Passing School Levies

    ERIC Educational Resources Information Center

    Johnson, Paul A.

    2008-01-01

    Passing property tax issues is an increasing challenge for many school districts. This article examines 21 school levy strategies identified through a literature review associated with successful school levy campaigns. These strategies were then used as a framework to evaluate one district's attempts to pass a school bond levy. Whereas the study…

  3. South Africa?s Increased Matriculation Passes: What Skunks behind the Rose?

    ERIC Educational Resources Information Center

    Monyooe, Lebusa; Tjatji, Martin; Mosese, Eulenda

    2014-01-01

    This article argues that the exponential increases in the Grade 12 (Matriculation) passes post 1994 do not necessarily translate to quality because of the low performance norms and standards set for passing Grade 12. It further calls for a serious reflection and interrogation of existing policies on performance, benchmarks, teacher education…

  4. 78 FR 45928 - Submission for OMB Review; Limitations on Pass-Through Charges

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-30

    ...; Limitations on Pass-Through Charges AGENCY: Department of Defense (DOD), General Services Administration (GSA... regarding Limitations on Pass- Through Charges. A notice was published in the Federal Register at 77 FR..., 2013. ADDRESSES: Submit comments identified by Information Collection 9000- 0173, Limitations on...

  5. 75 FR 8327 - Golden Pass Pipeline LLC; Notice of Request Under Blanket Authorization

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-24

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Golden Pass Pipeline LLC; Notice of Request Under Blanket Authorization February 17, 2010. Take notice that on October 29, 2009, Golden Pass Pipeline, LLC (GPPL), filed in...

  6. 36 CFR 1280.26 - May I pass out fliers on NARA property?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false May I pass out fliers on NARA property? 1280.26 Section 1280.26 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS...? Prohibited Activities § 1280.26 May I pass out fliers on NARA property? No, you may not distribute or...

  7. Reading Comprehension in University Students: Relevance of PASS Theory of Intelligence

    ERIC Educational Resources Information Center

    Georgiou, George K.; Das, J. P.

    2014-01-01

    We examined how Planning, Attention, Simultaneous and Successive (PASS) processes predict reading comprehension in a sample of university students (Study 1) and what PASS processes distinguish adults with and without reading difficulties (Study 2). In Study 1, 128 university students were tested on Das-Naglieri Cognitive Assessment System, reading…

  8. 9 CFR 310.8 - Passing and marking of carcasses and parts.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Passing and marking of carcasses and... INSPECTION AND CERTIFICATION POST-MORTEM INSPECTION § 310.8 Passing and marking of carcasses and parts. Carcasses and parts found to be sound, healthful, wholesome, and otherwise not adulterated shall be...

  9. A Short Note on the Relationship between Pass Rate and Multiple Attempts

    ERIC Educational Resources Information Center

    Cheng, Ying; Liu, Cheng

    2016-01-01

    For a certification, licensure, or placement exam, allowing examinees to take multiple attempts at the test could effectively change the pass rate. Change in the pass rate can occur without any change in the underlying latent trait, and can be an artifact of multiple attempts and imperfect reliability of the test. By deriving formulae to compute…

  10. Examining the Effects of PASS Cognitive Processes on Chinese Reading Accuracy and Fluency

    ERIC Educational Resources Information Center

    Wang, Xiaochen; Georgiou, George K.; Das, J. P.

    2012-01-01

    The purpose of this study was to examine the contribution of PASS (Planning, Attention, Simultaneous, and Successive) processes to Chinese reading accuracy and fluency. One-hundred-forty Grade 3 to 5 Mandarin-speaking children were assessed on measures of PASS processes, phonological awareness, and orthographic knowledge. A year later they were…

  11. 33 CFR 401.39 - Preparing mooring lines for passing through.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... passing through. 401.39 Section 401.39 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT... Preparing mooring lines for passing through. Before a vessel enters a lock: (a) Winches shall be capable of paying out at a minimum speed of 46 m per minute; and (b) The eye of each mooring line shall be...

  12. Behavioral Coaching to Improve Offensive Line Pass-Blocking Skills of High School Football Athletes

    ERIC Educational Resources Information Center

    Stokes, John V.; Luiselli, James K.; Reed, Derek D.; Fleming, Richard K.

    2010-01-01

    We evaluated several behavioral coaching procedures for improving offensive line pass-blocking skills with 5 high school varsity football players. Pass blocking was measured during practice drills and games, and our intervention included descriptive feedback with and without video feedback and teaching with acoustical guidance (TAG). Intervention…

  13. 78 FR 64531 - Notice of Proposed Withdrawal Extension, Sacramento Pass Recreation Area; Nevada

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-29

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF THE INTERIOR Bureau of Land Management Notice of Proposed Withdrawal Extension, Sacramento Pass Recreation Area..., but not from leasing under the mineral leasing laws, to protect the Sacramento Pass Recreation...

  14. 40 CFR 205.171-8 - Passing or failing under SEA.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Passing or failing under SEA. 205.171... Passing or failing under SEA. (a) A failing exhaust system is one which, when installed on any motorcycle... standard in § 205.166. (b) The number of failing vehicles in a sample determines whether the sample...

  15. The 150 Credit-Hour Requirement and CPA Examination Pass Rates--A Four Year Study

    ERIC Educational Resources Information Center

    Briggs, Gary P.; He, Lerong

    2012-01-01

    Debate concerning the minimum educational requirements of certified public accountant (CPA) candidates in the USA has been taking place for decades. This paper compares the sectional pass rates of CPA candidates from jurisdictions requiring 150 credit hours of college study with the pass rates of candidates from jurisdictions not requiring 150…

  16. 16 CFR 301.18 - Passing off domestic furs as imported furs prohibited.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Passing off domestic furs as imported furs prohibited. 301.18 Section 301.18 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC ACTS OF CONGRESS RULES AND REGULATIONS UNDER FUR PRODUCTS LABELING ACT Regulations § 301.18 Passing...

  17. 26 CFR 1.53-3 - Separate rule for pass-through of jobs credit.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 26 Internal Revenue 1 2010-04-01 2010-04-01 true Separate rule for pass-through of jobs credit. 1... INCOME TAXES Tax Surcharge § 1.53-3 Separate rule for pass-through of jobs credit. (a) In general. Under... include (but are not limited to) a deduction under section 1202 attributable to a net capital gain...

  18. 78 FR 18480 - Drawbridge Operation Regulations; Chef Menteur Pass, at Lake Catherine, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-27

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulations; Chef Menteur Pass, at Lake Catherine.... Highway 90 swing highway bridge across the Chef Menteur Pass, mile 2.8, at Lake Catherine, Orleans Parish... approved the request for the closure of the U.S. Highway 90 swing bridge crossing the Chef Menteur...

  19. 78 FR 13747 - Safety Advisory 2013-01; Passing Stop Signals Protecting Movable Bridges

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-28

    ... Federal Railroad Administration Safety Advisory 2013-01; Passing Stop Signals Protecting Movable Bridges... secured before permitting a train to pass a signal that is displaying a stop indication and protecting a..., it was normally left in an open position when not needed in order to allow pleasure craft to...

  20. 22 CFR 9b.8 - Term and renewal of Department of State press building passes.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Term and renewal of Department of State press building passes. 9b.8 Section 9b.8 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.8 Term and renewal of Department of State press...

  1. 22 CFR 9b.8 - Term and renewal of Department of State press building passes.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Term and renewal of Department of State press building passes. 9b.8 Section 9b.8 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.8 Term and renewal of Department of State press...

  2. 22 CFR 9b.8 - Term and renewal of Department of State press building passes.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Term and renewal of Department of State press building passes. 9b.8 Section 9b.8 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.8 Term and renewal of Department of State press...

  3. 22 CFR 9b.8 - Term and renewal of Department of State press building passes.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Term and renewal of Department of State press building passes. 9b.8 Section 9b.8 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.8 Term and renewal of Department of State press...

  4. The Test-Retest Reliability of the Parent and School Survey (PASS)

    ERIC Educational Resources Information Center

    Ringenberg, Matthew C.; Funk, Vanessa; Mullen, Kacy; Wilford, Amy; Kramer, Jessica

    2005-01-01

    The Parent And School Survey (PASS) is an instrument designed to quickly, easily, and accurately measure parental involvement in their children's education. It is based on Epstein's six-construct framework, with four items devoted to each construct. A test-retest reliability study of the PASS was conducted with 40 subjects to refine the 24 items…

  5. Older Children's Misunderstanding of Uncertain Belief after Passing the False Belief Test

    ERIC Educational Resources Information Center

    Zhang, Ting; Zheng, Xueru; Zhang, Li; Sha, Wenju; Deak, Gedeon; Li, Hong

    2010-01-01

    A four-location belief task was designed to examine children's understanding of another's uncertain belief after passing a false belief (FB) task. In Experiment 1, after passing the FB task, participants were asked what a puppet would do after he failed to find his toy at the falsely believed location. Most 4-year-olds and half of 6-year-olds…

  6. 33 CFR 110.195 - Mississippi River below Baton Rouge, LA, including South and Southwest Passes.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Mississippi River below Baton....195 Mississippi River below Baton Rouge, LA, including South and Southwest Passes. (a) The Anchorage... Head of Passes marked by Mississippi River Wreck Lighted Buoy WR4. Mariners are urged to use...

  7. 33 CFR 110.195 - Mississippi River below Baton Rouge, LA, including South and Southwest Passes.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Mississippi River below Baton....195 Mississippi River below Baton Rouge, LA, including South and Southwest Passes. (a) The Anchorage... Head of Passes marked by Mississippi River Wreck Lighted Buoy WR4. Mariners are urged to use...

  8. A photocoustic spectroscopy system for gas detection based on the multi-pass cell

    NASA Astrophysics Data System (ADS)

    Han, Luo; Chen, Xinglong; Xia, Hua; Pang, Tao; Zhang, Zhirong; Wu, Brian; Sun, Pengshuai; Cui, Xiaojuan; Li, Zhe; Wang, Yu; Dong, Fengzhong

    2016-11-01

    Photo-acoustic spectroscopy gas detection technology has the advantages of high sensitivity, good selectivity, small size and real time monitoring and has been widely used in environmental monitoring, industrial production, medical diagnosis, biological technology and monitoring of power facilities. In this paper, a method to improve the sensitivity of photo-acoustic spectroscopy system is presented, which is combined with the technique of Herriott type multiple pass cell. In this experimental apparatus, the design of the experimental device can make the beam pass the cell 18 times. By comparing the signal of one time pass through the photoacoustic cell and the signal of 18 times passes pass through the photoacoustic cell, we can confirm that the signal is increased and this method is feasible.

  9. Medicaid Program; The Use of New or Increased Pass-Through Payments in Medicaid Managed Care Delivery Systems. Final rule.

    PubMed

    2017-01-18

    This rule finalizes changes to the pass-through payment transition periods and the maximum amount of pass-through payments permitted annually during the transition periods under Medicaid managed care contract(s) and rate certification(s). This final rule prevents increases in pass-through payments and the addition of new pass-through payments beyond those in place when the pass-through payment transition periods were established, in the final Medicaid managed care regulations effective July 5, 2016.

  10. Is the three-foot bicycle passing law working in Baltimore, Maryland?

    PubMed

    Love, David C; Breaud, Autumn; Burns, Sean; Margulies, Jared; Romano, Max; Lawrence, Robert

    2012-09-01

    Maryland (MD) recently became one of fourteen states in the United States to enact a traffic law requiring motor vehicles to pass bicyclists at a distance of greater than three feet. To our knowledge, motorist compliance with the law has never been assessed. This study measured the distance between overtaking motor vehicles and cyclists [e.g. vehicle passing distance (VPD)], to develop baseline metrics for tracking implementation of the three-foot passing law in Baltimore, MD and to assess risk factors for dangerous passes. During September and October 2011, cyclists (n=5) measured VPD using a previously published video technique (Parkin and Meyers, 2010). Cyclists logged a total of 10.8h of video footage and 586 vehicle passes on 34 bicycle commuting trips. The average trip lasted 19.5±4.9 min and cyclists were passed on average 17.2±11.8 times per trip. VPDs of three feet or less were common when cycling in standard lanes (17%; 78 of 451 passes) and lanes with a shared lane marking (e.g. sharrows) (23%; 11 of 47 passes). No passes of three feet or less occurred in bicycle lanes (0 of 88 passes). A multiple linear regression model was created, which explained 26% of the variability in VPD. Significant model variables were lane width, bicycle infrastructure, cyclist identity, and street identity. Interventions, such as driver education, signage, enforcement, and bicycle infrastructure changes are needed to influence driving behavior in Baltimore to increase motorist compliance with the three-foot law.

  11. Investigation of the effects of sleeper-passing impacts on the high-speed train

    NASA Astrophysics Data System (ADS)

    Wu, Xingwen; Cai, Wubin; Chi, Maoru; Wei, Lai; Shi, Huailong; Zhu, Minhao

    2015-12-01

    The sleeper-passing impact has always been considered negligible in normal conditions, while the experimental data obtained from a High-speed train in a cold weather expressed significant sleeper-passing impacts on the axle box, bogie frame and car body. Therefore, in this study, a vertical coupled vehicle/track dynamic model was developed to investigate the sleeper-passing impacts and its effects on the dynamic performance of the high-speed train. In the model, the dynamic model of vehicle is established with 10 degrees of freedom. The track model is formulated with two rails supported on the discrete supports through the finite element method. The contact forces between the wheel and rail are estimated using the non-linear Hertz contact theory. The parametric studies are conducted to analyse effects of both the vehicle speeds and the discrete support stiffness on the sleeper-passing impacts. The results show that the sleeper-passing impacts become extremely significant with the increased support stiffness of track, especially when the frequencies of sleeper-passing impacts approach to the resonance frequencies of wheel/track system. The damping of primary suspension can effectively lower the magnitude of impacts in the resonance speed ranges, but has little effect on other speed ranges. Finally, a more comprehensively coupled vehicle/track dynamic model integrating with a flexible wheel set is developed to discuss the sleeper-passing-induced flexible vibration of wheel set.

  12. Band-pass processing in a GPCR signaling pathway selects for NFAT transcription factor activation.

    PubMed

    Sumit, M; Neubig, R R; Takayama, S; Linderman, J J

    2015-11-01

    Many biological processes are rhythmic and proper timing is increasingly appreciated as being critical for development and maintenance of physiological functions. To understand how temporal modulation of an input signal influences downstream responses, we employ microfluidic pulsatile stimulation of a G-protein coupled receptor, the muscarinic M3 receptor, in single cells with simultaneous real-time imaging of both intracellular calcium and NFAT nuclear localization. Interestingly, we find that reduced stimulation with pulses of ligand can give more efficient transcription factor activation, if stimuli are timed appropriately. Our experiments and computational analyses show that M3 receptor-induced calcium oscillations form a low pass filter while calcium-induced NFAT translocation forms a high pass filter. The combination acts as a band-pass filter optimized for intermediate frequencies of stimulation. We demonstrate that receptor desensitization and NFAT translocation rates determine critical features of the band-pass filter and that the band-pass may be shifted for different receptors or NFAT dynamics. As an example, we show that the two NFAT isoforms (NFAT4 and NFAT1) have shifted band-pass windows for the same receptor. While we focus specifically on the M3 muscarinic receptor and NFAT translocation, band-pass processing is expected to be a general theme that applies to multiple signaling pathways.

  13. Preoperative Predictors for Noncopers to Pass Return to Sports Criteria After ACL Reconstruction

    PubMed Central

    Zeni, Joseph; Di Stasi, Stephanie; Axe, Michael J.; Snyder-Mackler, Lynn

    2013-01-01

    Less than 50% of athletes pass criteria to return to sports (RTS) 6 months after ACL reconstruction (ACLR). Using data on 38 noncopers, we hypothesized that preoperative age, quadriceps strength index (QI), and knee flexion moments (KFM) during gait would predict the ability to pass/fail RTS criteria and that preoperative quadriceps strength gains would be predictive of passing RTS criteria. Gait analysis and strength data were collected before and after a preoperative intervention and 6 months after ACLR. Age, QI, and KFM each contributed to the predictability to pass or fail RTS criteria 6 months after ACLR. Collectively, the variables predict 69% who would pass and 82% who would fail RTS criteria 6 months after ACLR. Younger athletes who have symmetrical quadriceps strength and greater KFM were more likely to pass RTS criteria. Further, 63% of those who increased preoperative quadriceps strength passed RTS criteria, whereas 73% who did not failed. Increasing quadriceps strength in noncopers before ACLR seems warranted. PMID:22983930

  14. Reversible wavelet filter banks with side informationless spatially adaptive low-pass filters

    NASA Astrophysics Data System (ADS)

    Abhayaratne, Charith

    2011-07-01

    Wavelet transforms that have an adaptive low-pass filter are useful in applications that require the signal singularities, sharp transitions, and image edges to be left intact in the low-pass signal. In scalable image coding, the spatial resolution scalability is achieved by reconstructing the low-pass signal subband, which corresponds to the desired resolution level, and discarding other high-frequency wavelet subbands. In such applications, it is vital to have low-pass subbands that are not affected by smoothing artifacts associated with low-pass filtering. We present the mathematical framework for achieving 1-D wavelet transforms that have a spatially adaptive low-pass filter (SALP) using the prediction-first lifting scheme. The adaptivity decisions are computed using the wavelet coefficients, and no bookkeeping is required for the perfect reconstruction. Then, 2-D wavelet transforms that have a spatially adaptive low-pass filter are designed by extending the 1-D SALP framework. Because the 2-D polyphase decompositions are used in this case, the 2-D adaptivity decisions are made nonseparable as opposed to the separable 2-D realization using 1-D transforms. We present examples using the 2-D 5/3 wavelet transform and their lossless image coding and scalable decoding performances in terms of quality and resolution scalability. The proposed 2-D-SALP scheme results in better performance compared to the existing adaptive update lifting schemes.

  15. What is the chance all your trainees will pass the next Fellowship exam: A statistician's view.

    PubMed

    Chu, Kevin H; Mahmoud, Ibrahim; Brown, Anthony Ft

    2017-02-01

    Your department has had a good track record over many years for preparing trainees to successfully sit for the ACEM Fellowship exam. On average the pass rate for your trainees is over 80%. Then, to your dismay, suddenly only two of five of your trainees pass the latest Fellowship exam. Does this anomaly necessitate an urgent review of your department's training programme, or is it just a statistical quirk? Let us suppose you can prepare candidates so that they all have at least an 80% chance of passing. The probability that all five candidates would have passed is 32.8% (or 0.8(5) ) based on the multiplication rule of probability for independent events. The probability that only two of five passed is 5.1% (or 10 × 0.8(2) × 0.2(3) ) based on the binomial distribution, which is a probability distribution analogous to the normal distribution. The construction of the binomial distribution depends on two parameters: (i) number of candidates sitting ('n'), and (ii) probability of passing for any individual candidate ('P'). The distribution gives the probability that 'x' number of individuals will pass when 'n' number of individuals sit. Thus despite an 80% pass rate historically, the probability that only two of five candidates will pass is not negligible at 5.1%. It is an anomaly, which we may choose not to act on unless it is recurrent, noting it will be expected to occur naturally about one time out of 20. The real challenge is to maintain or increase that individual probability at 80% or higher.

  16. Using the Arthroscopic Surgery Skill Evaluation Tool as a Pass-Fail Examination

    PubMed Central

    Koehler, Ryan J.; Nicandri, Gregg T.

    2013-01-01

    Background: Examination of arthroscopic skill requires evaluation tools that are valid and reliable with clear criteria for passing. The Arthroscopic Surgery Skill Evaluation Tool was developed as a video-based assessment of technical skill with criteria for passing established by a panel of experts. The purpose of this study was to test the validity and reliability of the Arthroscopic Surgery Skill Evaluation Tool as a pass-fail examination of arthroscopic skill. Methods: Twenty-eight residents and two sports medicine faculty members were recorded performing diagnostic knee arthroscopy on a left and right cadaveric specimen in our arthroscopic skills laboratory. Procedure videos were evaluated with use of the Arthroscopic Surgery Skill Evaluation Tool by two raters blind to subject identity. Subjects were considered to pass the Arthroscopic Surgery Skill Evaluation Tool when they attained scores of ≥3 on all eight assessment domains. Results: The raters agreed on a pass-fail rating for fifty-five of sixty videos rated with an interclass correlation coefficient value of 0.83. Ten of thirty participants were assigned passing scores by both raters for both diagnostic arthroscopies performed in the laboratory. Receiver operating characteristic analysis demonstrated that logging more than eighty arthroscopic cases or performing more than thirty-five arthroscopic knee cases was predictive of attaining a passing Arthroscopic Surgery Skill Evaluation Tool score on both procedures performed in the laboratory. Conclusions: The Arthroscopic Surgery Skill Evaluation Tool is valid and reliable as a pass-fail examination of diagnostic arthroscopy of the knee in the simulation laboratory. Clinical Relevance: This study demonstrates that the Arthroscopic Surgery Skill Evaluation Tool may be a useful tool for pass-fail examination of diagnostic arthroscopy of the knee in the simulation laboratory. Further study is necessary to determine whether the Arthroscopic Surgery Skill

  17. The driver’s anticipation effect with passing in lattice model for two-lane freeway

    NASA Astrophysics Data System (ADS)

    Peng, Guanghan

    2015-09-01

    In this paper, a new lattice model is proposed with the consideration of the driver’s anticipation effect with passing for two-lane traffic system. The linear stability condition and the mKdV equation which are correlative to the driver’s anticipation effect with passing are derived from linear stability analysis and nonlinear analysis, respectively. Numerical simulation shows that the driver’s anticipation effects with passing can efficiently enhance the stability of traffic flow under lane changing on two-lane highway.

  18. Survival Rates of Juvenile Salmonids Passing Through the Bonneville Dam and Spillway in 2008

    SciTech Connect

    Ploskey, Gene R.; Weiland, Mark A.; Faber, Derrek M.; Deng, Zhiqun; Johnson, Gary E.; Hughes, James S.; Zimmerman, Shon A.; Monter, Tyrell J.; Cushing, Aaron W.; Wilberding, Matthew C.; Durham, Robin E.; Townsend, R. L.; Skalski, J. R.; Buchanan, Rebecca A.; Kim, Jina; Fischer, Eric S.; Meyer, Matthew M.; McComas, Roy L.; Everett, Jason

    2009-12-28

    This report describes a 2008 acoustic telemetry survival study conducted by the Pacific Northwest National Laboratory for the Portland District of the U.S. Army Corps of Engineers. The study estimated the survival of juvenile Chinook salmon and steelhead passing Bonneville Dam (BON) and its spillway. Of particular interest was the relative survival of smolts detected passing through end spill bays 1-3 and 16-18, which had deep flow deflectors immediately downstream of spill gates, versus survival of smolts passing middle spill bays 4-15, which had shallow flow deflectors.

  19. Pressure drop and mass transfer in two-pass ribbed channels

    NASA Technical Reports Server (NTRS)

    Chandra, P. R.; Han, J. C.

    1989-01-01

    The combined effects of the sharp 180-deg turn and of the rib configuration on the pressure drop and mass transfer characteristics in a two-pass square channel with a pair of opposite rib-roughened walls (to simulate turbine airfoil cooling passages) were determined for a Reynolds number range of 10,000-60,000. Heat transfer enhancements were compared for the first pass and for the two-pass channel with the sharp 180-deg turn. Correlations for the fully-developed friction factors and loss coefficients were obtained.

  20. By-Pass Diode Temperature Tests of a Solar Array Coupon under Space Thermal Environment Conditions

    NASA Technical Reports Server (NTRS)

    Wright, Kenneth H.; Schneider, Todd A.; Vaughn, Jason A.; Hoang, Bao; Wong, Frankie; Wu, Gordon

    2016-01-01

    By-Pass diodes are a key design feature of solar arrays and system design must be robust against local heating, especially with implementation of larger solar cells. By-Pass diode testing was performed to aid thermal model development for use in future array designs that utilize larger cell sizes that result in higher string currents. Testing was performed on a 56-cell Advanced Triple Junction solar array coupon provided by SSL. Test conditions were vacuum with cold array backside using discrete by-pass diode current steps of 0.25 A ranging from 0 A to 2.0 A.

  1. Canonical transformation for trapped/passing guiding-center orbits in axisymmetric tokamak geometry

    SciTech Connect

    Brizard, Alain J.; Duthoit, François-Xavier

    2014-05-15

    The generating function for the canonical transformation from the parallel canonical coordinates (s,p{sub ||}) to the action-angle coordinates (ζ, J) for trapped/passing guiding-center orbits in axisymmetric tokamak geometry is presented. Drawing on the analogy between the phase-space portraits of the librating/rotating pendulum and the trapped/passing guiding-center orbits, the generating function is expressed in terms of the Jacobi zeta function, which can then readily be used to obtain an explicit expression for the bounce-center transformation for trapped/passing-particle guiding-center orbits in axisymmetric tokamak geometry.

  2. Spherical Refractive Correction With an Electro-Optical Liquid Lens in a Double-Pass System

    NASA Astrophysics Data System (ADS)

    Sanàbria, F.; Díaz-Doutón, F.; Aldaba, M.; Pujol, J.

    2013-09-01

    In this study we show a novel double-pass configuration to correct the spherical refractive error by means of an electro-optical liquid lens.The proposed method enables spherical correction in the -12 D to +7 D range without movable parts using an electro-optical liquid lens.We have measured the optical performance of the spherical corrector in terms of power, pupil size and optical quality verifying that it fitsthe requirements to be applied to a double-pass system. We have also evaluated the performance of the proposed method in patients bycomparison with a conventional double-pass system using a Badal optometer.

  3. High-level message-passing constructs for Zipcode 1.0: Design and implementation

    SciTech Connect

    Smith, S.G.; Falgout, R.D.; Still, C.H.; Skjellum, A.

    1993-10-01

    Zipcode is a message passing system that was initially designed for multicomputers and homogeneous networks of computers. This paper describes Zipcode ``invoices,`` which raise the message-passing interface of Zipcode to a higher level of abstraction. The ``gather-send`` and ``receive-scatter`` semantics enable heterogeneous communication. The higher level of abstraction also simplifies message passing and reveals more optimizations. We explain the utility of these features and give examples of the calling sequences that implement them. All of these features are seen as enablers for parallel library development and large applications.

  4. First results of electron temperature measurements by the use of multi-pass Thomson scattering system in GAMMA 10

    SciTech Connect

    Yoshikawa, M. Nagasu, K.; Shimamura, Y.; Shima, Y.; Kohagura, J.; Sakamoto, M.; Nakashima, Y.; Imai, T.; Ichimura, M.; Yasuhara, R.; Yamada, I.; Funaba, H.; Kawahata, K.; Minami, T.

    2014-11-15

    A multi-pass Thomson scattering (TS) has the advantage of enhancing scattered signals. We constructed a multi-pass TS system for a polarisation-based system and an image relaying system modelled on the GAMMA 10 TS system. We undertook Raman scattering experiments both for the multi-pass setting and for checking the optical components. Moreover, we applied the system to the electron temperature measurements in the GAMMA 10 plasma for the first time. The integrated scattering signal was magnified by approximately three times by using the multi-pass TS system with four passes. The electron temperature measurement accuracy is improved by using this multi-pass system.

  5. First results of electron temperature measurements by the use of multi-pass Thomson scattering system in GAMMA 10

    NASA Astrophysics Data System (ADS)

    Yoshikawa, M.; Yasuhara, R.; Nagasu, K.; Shimamura, Y.; Shima, Y.; Kohagura, J.; Sakamoto, M.; Nakashima, Y.; Imai, T.; Ichimura, M.; Yamada, I.; Funaba, H.; Kawahata, K.; Minami, T.

    2014-11-01

    A multi-pass Thomson scattering (TS) has the advantage of enhancing scattered signals. We constructed a multi-pass TS system for a polarisation-based system and an image relaying system modelled on the GAMMA 10 TS system. We undertook Raman scattering experiments both for the multi-pass setting and for checking the optical components. Moreover, we applied the system to the electron temperature measurements in the GAMMA 10 plasma for the first time. The integrated scattering signal was magnified by approximately three times by using the multi-pass TS system with four passes. The electron temperature measurement accuracy is improved by using this multi-pass system.

  6. Regional Comparisons, Spatial Aggregation, and Asymmetry of Price Pass-Through

    EIA Publications

    2005-01-01

    Spot to retail price pass-through behavior of the U.S. gasoline market was investigated at the national and regional levels, using weekly wholesale and retail motor gasoline prices from January 2000 to the present.

  7. Thermo-mechanical and experimental analysis of double pass line heating

    NASA Astrophysics Data System (ADS)

    Biswas, Pankaj; Mandal, N. R.; Sha, O. P.; Mahapatra, M. M.

    2011-06-01

    The present investigation deals with process analysis of oxy-acetylene flame assisted double pass line heating for varying plate thickness. oxy-acetylene flame as the heat source for multi pass line heating to achieve 3-D bending of plates with varying thicknesses was studied. The oxy-acetylene flame was modeled as the moving heat source in the FEM analysis. The transient thermal histories were predicted taking into account the temperature dependent thermo-mechanical properties. A comparative study between single pass and double pass line heating residual deformation was also carried out. The temperature distribution and residual deformations predicted by the numerical model developed in the present work compared fairly well with those of the experimental ones.

  8. Overgrazing- How far are we from passing the tipping point of turning our rangelands into desert?

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Ecological science, particularly with regard to Mongolian rangelands, is not able to estimate when a tipping point will be passed. Nonetheless, it does provide a framework for responding to the threat of desertification tipping points. ...

  9. 20 CFR 416.1181 - What is a plan to achieve self-support (PASS)?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... INCOME FOR THE AGED, BLIND, AND DISABLED Income Rules for Helping Blind and Disabled Individuals Achieve... propose a reasonable ending date for your PASS. If necessary, we can help you establish an ending...

  10. 20 CFR 416.1181 - What is a plan to achieve self-support (PASS)?

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... INCOME FOR THE AGED, BLIND, AND DISABLED Income Rules for Helping Blind and Disabled Individuals Achieve... propose a reasonable ending date for your PASS. If necessary, we can help you establish an ending...

  11. 20 CFR 416.1181 - What is a plan to achieve self-support (PASS)?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... INCOME FOR THE AGED, BLIND, AND DISABLED Income Rules for Helping Blind and Disabled Individuals Achieve... propose a reasonable ending date for your PASS. If necessary, we can help you establish an ending...

  12. 20 CFR 416.1181 - What is a plan to achieve self-support (PASS)?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... INCOME FOR THE AGED, BLIND, AND DISABLED Income Rules for Helping Blind and Disabled Individuals Achieve... propose a reasonable ending date for your PASS. If necessary, we can help you establish an ending...

  13. Research on two-pass differential InSAR and its implementation

    NASA Astrophysics Data System (ADS)

    Liu, Yihua; Zeng, Qiming; Li, Xiaofan; Gao, Liang; Zhang, Hua

    2006-03-01

    In this paper, the principle and processing procedures of two-pass Differential Interferometric Synthetic Aperture Radar (DInSAR) have been presented, and the difficulties and implementation of the key points are discussed in detail.

  14. Quiz: Does Your Blood Pressure Pass the Test? | NIH MedlinePlus the Magazine

    MedlinePlus

    ... please turn Javascript on. Special Section: Healthy Blood Pressure Quiz: Does Your Blood Pressure Pass the Test? Past Issues / Winter 2010 Table of Contents Blood pressure changes throughout the day. It is highest while ...

  15. High peak-power kilohertz laser system employing single-stage multi-pass amplification

    DOEpatents

    Shan, Bing; Wang, Chun; Chang, Zenghu

    2006-05-23

    The present invention describes a technique for achieving high peak power output in a laser employing single-stage, multi-pass amplification. High gain is achieved by employing a very small "seed" beam diameter in gain medium, and maintaining the small beam diameter for multiple high-gain pre-amplification passes through a pumped gain medium, then leading the beam out of the amplifier cavity, changing the beam diameter and sending it back to the amplifier cavity for additional, high-power amplification passes through the gain medium. In these power amplification passes, the beam diameter in gain medium is increased and carefully matched to the pump laser's beam diameter for high efficiency extraction of energy from the pumped gain medium. A method of "grooming" the beam by means of a far-field spatial filter in the process of changing the beam size within the single-stage amplifier is also described.

  16. Notification: Preliminary Research to Evaluate Hazardous Waste Passing Through Publicly Owned Treatment Works

    EPA Pesticide Factsheets

    March 13, 2013. The EPA's OIG plans to start preliminary research to evaluate the effectiveness of the EPA’s programs in preventing and addressing contamination of surface water from hazardous wastes passing through publicly owned treatment works.

  17. Concurrent Processing Demands and the Experience of Time-In-Passing

    ERIC Educational Resources Information Center

    Hicks, Robert E.; And Others

    1977-01-01

    This research finds that the experience of time-in-passing is an inverse function of the processing demanded by a concurrent task. An attentional model is suggested and evaluated against the literature. (Editor/RK)

  18. Protective Service Physical Ability Tests: Establishing Pass/Fail, Ranking, and Banding Procedures.

    ERIC Educational Resources Information Center

    Biddle, Dan; Sill, Nikki Shepherd

    1999-01-01

    Setting pass/fail cutoffs that accurately reflect physical ability required for job performance is a key consideration for public-sector employment testing. Top-down ranking is less appropriate than job-performance expectancy banding. (SK)

  19. Statistical variability and confidence intervals for planar dose QA pass rates

    SciTech Connect

    Bailey, Daniel W.; Nelms, Benjamin E.; Attwood, Kristopher; Kumaraswamy, Lalith; Podgorsak, Matthew B.

    2011-11-15

    Purpose: The most common metric for comparing measured to calculated dose, such as for pretreatment quality assurance of intensity-modulated photon fields, is a pass rate (%) generated using percent difference (%Diff), distance-to-agreement (DTA), or some combination of the two (e.g., gamma evaluation). For many dosimeters, the grid of analyzed points corresponds to an array with a low areal density of point detectors. In these cases, the pass rates for any given comparison criteria are not absolute but exhibit statistical variability that is a function, in part, on the detector sampling geometry. In this work, the authors analyze the statistics of various methods commonly used to calculate pass rates and propose methods for establishing confidence intervals for pass rates obtained with low-density arrays. Methods: Dose planes were acquired for 25 prostate and 79 head and neck intensity-modulated fields via diode array and electronic portal imaging device (EPID), and matching calculated dose planes were created via a commercial treatment planning system. Pass rates for each dose plane pair (both centered to the beam central axis) were calculated with several common comparison methods: %Diff/DTA composite analysis and gamma evaluation, using absolute dose comparison with both local and global normalization. Specialized software was designed to selectively sample the measured EPID response (very high data density) down to discrete points to simulate low-density measurements. The software was used to realign the simulated detector grid at many simulated positions with respect to the beam central axis, thereby altering the low-density sampled grid. Simulations were repeated with 100 positional iterations using a 1 detector/cm{sup 2} uniform grid, a 2 detector/cm{sup 2} uniform grid, and similar random detector grids. For each simulation, %/DTA composite pass rates were calculated with various %Diff/DTA criteria and for both local and global %Diff normalization

  20. 33 CFR 80.835 - Point Au Fer, LA to Calcasieu Pass, LA.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Point. (b) Lines following the general trend of the highwater shoreline drawn across the bayou and canal... across Southwest Pass. (d) A line drawn across the seaward extremity of the Freshwater Bayou...

  1. 33 CFR 80.835 - Point Au Fer, LA to Calcasieu Pass, LA.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Point. (b) Lines following the general trend of the highwater shoreline drawn across the bayou and canal... across Southwest Pass. (d) A line drawn across the seaward extremity of the Freshwater Bayou...

  2. Does administering a comprehensive examination affect pass rates on the Registered Health Information Administrator certification examination?

    PubMed

    McNeill, Marjorie H

    2009-01-01

    The purpose of this research study was to determine whether the administration of a comprehensive examination before graduation increases the percentage of students passing the Registered Health Information Administrator certification examination. A t-test for independent means yielded a statistically significant difference between the Registered Health Information Administrator certification examination pass rates of health information administration programs that administer a comprehensive examination and programs that do not administer a comprehensive examination. Programs with a high certification examination pass rate do not require a comprehensive examination when compared with those programs with a lower pass rate. It is concluded that health information administration faculty at the local level should perform program self-analysis to improve student progress toward achievement of learning outcomes and entry-level competencies.

  3. Analysis of the NASA/MSFC airborne Doppler lidar results from San Gorgonio Pass, California

    NASA Technical Reports Server (NTRS)

    Cliff, W. C.; Skarda, J. R.; Renne, D. S.; Sandusky, W. F.

    1985-01-01

    The NASA/MSFC Airborne Doppler Lidar System was flown in July 1981 aboard the NASA/Ames Convair 990 on the east side of San Gorgonio Pass California, near Palm Springs, to measure and investigate the accelerated atmospheric wind field discharging from the pass. At this region, the maritime layer from the west coast accelerates through the pass and spreads out over the valley floor on the east side of the pass. The experiment was selected in order to study accelerated flow in and at the exit of the canyon. Ground truth wind data taken concurrently with the flight data were available from approximately 12 meteorological towers and 3 tala kites for limited comparison purposes. The experiment provided the first spatial data for ensemble averaging of spatial correlations to compute lateral and longitudinal length scales in the lateral and longitudinal directions for both components, and information on atmospheric flow in this region of interest from wind energy resource considerations.

  4. 26 CFR 1.53-3 - Separate rule for pass-through of jobs credit.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 26 Internal Revenue 1 2011-04-01 2009-04-01 true Separate rule for pass-through of jobs credit. 1... INCOME TAXES Tax Surcharge § 1.53-3 Separate rule for pass-through of jobs credit. (a) In general. Under section 53(b), in the case of a new jobs credit or targeted jobs credit earned under section 44B by...

  5. Space Shuttle Program Primary Avionics Software System (PASS) Success Legacy - Quality and Reliability Date

    NASA Technical Reports Server (NTRS)

    Orr, James K.; Peltier, Daryl

    2010-01-01

    Thsi slide presentation reviews the avionics software system on board the space shuttle, with particular emphasis on the quality and reliability. The Primary Avionics Software System (PASS) provides automatic and fly-by-wire control of critical shuttle systems which executes in redundant computers. Charts given show the number of space shuttle flights vs time, PASS's development history, and other charts that point to the reliability of the system's development. The reliability of the system is also compared to predicted reliability.

  6. Four-Pass Coupler for Laser-Diode-Pumped Solid-State Laser

    NASA Technical Reports Server (NTRS)

    Coyle, Donald B.

    2008-01-01

    A four-pass optical coupler affords increased (in comparison with related prior two-pass optical couplers) utilization of light generated by a laser diode in side pumping of a solid-state laser slab. The original application for which this coupler was conceived involves a neodymium-doped yttrium aluminum garnet (Nd:YAG) crystal slab, which, when pumped by a row of laser diodes at a wavelength of 809 nm, lases at a wavelength of 1,064 nm. Heretofore, typically, a thin laser slab has been pumped in two passes, the second pass occurring by virtue of reflection of pump light from a highly reflective thin film on the side opposite the side through which the pump light enters. In two-pass pumping, a Nd:YAG slab having a thickness of 2 mm (which is typical) absorbs about 84 percent of the 809-nm pump light power, leaving about 16 percent of the pump light power to travel back toward the laser diodes. This unused power can cause localized heating of the laser diodes, thereby reducing their lifetimes. Moreover, if the slab is thinner than 2 mm, then even more unused power travels back toward the laser diodes. The four-pass optical coupler captures most of this unused pump light and sends it back to the laser slab for two more passes. As a result, the slab absorbs more pump light, as though it were twice as thick. The gain and laser cavity beam quality of a smaller laser slab in conjunction with this optical coupler can thus be made comparable to those of a larger two-pass-pumped laser slab.

  7. MICA, a facility to achieve portability for message-passing and dynamic memory management in FORTRAN

    SciTech Connect

    Brown, J.C.; Mirin, A.A.

    1994-01-01

    MICA, which stands for Macro Interface for Communication and Allocation, is a macro facility for message passing and dynamic memory management for Fortran programs on Unix platforms. A combination of CPP and M4 preprocessing is used to provide the macro interface. CPP is used for conditional compilation according to machine architecture and selected memory management and message passing options. M4 is used for translating the macro calls into the appropriate Fortran code sequences. Several supporting Fortran subprograms are included.

  8. Relationship between internal medicine program board examination pass rates, accreditation standards, and program size

    PubMed Central

    Falcone, John L.; Gonzalo, Jed D.

    2014-01-01

    Objectives: To determine Internal Medicine residency program compliance with the Accreditation Council for Graduate Medical Education 80% pass-rate standard and the correlation between residency program size and performance on the American Board of Internal Medicine Certifying Examination. Methods Using a cross-sectional study design from 2010-2012 American Board of Internal Medicine Certifying Examination data of all Internal Medicine residency programs, comparisons were made between program pass rates to the Accreditation Council for Graduate Medical Education pass-rate standard. To assess the correlation between program size and performance, a Spearman’s rho was calculated. To evaluate program size and its relationship to the pass-rate standard, receiver operative characteristic curves were calculated. Results Of 372 Internal Medicine residency programs, 276 programs (74%) achieved a pass rate of ≥80%, surpassing the Accreditation Council for Graduate Medical Education minimum standard. A weak correlation was found between residency program size and pass rate for the three-year period (ρ=0.19, p<0.001). The area underneath the receiver operative characteristic curve was 0.69 (95% Confidence Interval [0.63-0.75]), suggesting programs with less than 12 examinees/year are less likely to meet the minimum Accreditation Council for Graduate Medical Education pass-rate standard (sensitivity 63.8%, specificity 60.4%, positive predictive value 82.2%, p<0.001). Conclusions Although a majority of Internal Medicine residency programs complied with Accreditation Council for Graduate Medical Education pass-rate standards, a quarter of the programs failed to meet this requirement. Program size is positively but weakly associated with American Board of Internal Medicine Certifying Examination performance, suggesting other unidentified variables significantly contribute to program performance. PMID:25341205

  9. Variability of Labrador Sea Water transported through Flemish Pass during 1993-2013

    NASA Astrophysics Data System (ADS)

    Schneider, Linn; Kieke, Dagmar; Jochumsen, Kerstin; Colbourne, Eugene; Yashayaev, Igor; Steinfeldt, Reiner; Varotsou, Eirini; Serra, Nuno; Rhein, Monika

    2015-08-01

    Flemish Pass, located at the western subpolar margin, is a passage (sill depth 1200 m) that is constrained by the Grand Banks and the underwater plateau Flemish Cap. In addition to the Deep Western Boundary Current (DWBC) pathway offshore of Flemish Cap, Flemish Pass represents another southward transport pathway for two modes of Labrador Sea Water (LSW), the lightest component of North Atlantic Deep Water carried with the DWBC. This pathway avoids potential stirring regions east of Flemish Cap and deflection into the interior North Atlantic. Ship-based velocity measurements between 2009 and 2013 at 47°N in Flemish Pass and in the DWBC east of Flemish Cap revealed a considerable southward transport of Upper LSW through Flemish Pass (15-27%, -1.0 to -1.5 Sv). About 98% of the denser Deep LSW were carried around Flemish Cap as Flemish Pass is too shallow for considerable transport of Deep LSW. Hydrographic time series from ship-based measurements show a significant warming of 0.3°C/decade and a salinification of 0.03/decade of the Upper LSW in Flemish Pass between 1993 and 2013. Almost identical trends were found for the evolution in the Labrador Sea and in the DWBC east of Flemish Cap. This indicates that the long-term hydrographic variability of Upper LSW in Flemish Pass as well as in the DWBC at 47°N is dominated by changes in the Labrador Sea, which are advected southward. Fifty years of numerical ocean model simulations in Flemish Pass suggest that these trends are part of a multidecadal cycle.

  10. Do progression and remediation policies improve NCLEX-RN pass rates?

    PubMed

    Morrison, Susan; Free, Kathleen Walsh; Newman, Mary

    2006-01-01

    Administrators at 5 schools of nursing who implemented a progression policy based on HESI Exit Exam scores were interviewed regarding their NCLEX-RN pass rates before and after initiating the policy and methods used for remediation. Even though the methods used for remediation were quite different among the participating schools, data obtained from these interviews indicated that the schools' NCLEX-RN pass rates improved 9-41% within 2 years after implementing the progression policies.

  11. Do progression and remediation policies improve NCLEX-RN pass rates?

    PubMed

    Morrison, Susan; Free, Kathleen Walsh; Newman, Mary

    2008-01-01

    Administrators at 5 schools of nursing who implemented a progression policy based on HESI Exit Examtrade mark scores were interviewed regarding their NCLEX-RN pass rates before and after initiating the policy and methods used for remediation. Even though the methods used for remediation were quite different among the participating schools, data obtained from these interviews indicated that the schools' NCLEX-RN pass rates improved 9-41% within 2 years after implementing the progression policies.

  12. Reporting survival results of fish passing through low-head turbines

    SciTech Connect

    Matousek, J.A.; Wells, A.W.; Hecht, J.H.

    1994-05-01

    Findings from investigations at four Michigan hydroelectric plants indicate low to moderate mortality rates among fish passing through turbines. A fish passage study recently completed at four hydroelectric facilities on the Muskkegon and Au Sable rivers found that over 83% of the fish survive turbine entrainment. This study provides answers to questions about entrainment mortality of resident cool water fish species in the Midwest passing through turbines of various configurations.

  13. Optics correction for the multi-pass FFAG ERL machine eRHIC

    SciTech Connect

    Liu, C.; Brooks, S.; Litvinenko, V.; Minty, M.; Ptitsyn, V.; Trbojevic, D.

    2015-05-03

    Gradient errors in the multi-pass Fixed Field Alternating Gradient (FFAG) Energy Recovery Linac (ERL) machine, eRHIC, distort the beam orbit and therefore cause emittance increase. The localization and correction of gradient errors are essential for an effective orbit correction and emittance preservation. In this report, the methodology and simulation of optics correction for the multi-pass FFAG ERL machine eRHIC will be presented.

  14. Verification of Faulty Message Passing Systems with Continuous State Space in PVS

    NASA Technical Reports Server (NTRS)

    Pilotto, Concetta; White, Jerome

    2010-01-01

    We present a library of Prototype Verification System (PVS) meta-theories that verifies a class of distributed systems in which agent commu nication is through message-passing. The theoretic work, outlined in, consists of iterative schemes for solving systems of linear equations , such as message-passing extensions of the Gauss and Gauss-Seidel me thods. We briefly review that work and discuss the challenges in formally verifying it.

  15. Design, Construction, and Analysis of Fabric-Reinforced Embankment Test Section at Pinto Pass, Mobile, Alabama.

    DTIC Science & Technology

    1981-10-01

    AD-A 07 556 ARM ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG--ETC F/G 13/13 DESIGN CONSTRUCTION AND ANALYSIS OF FABRIC-REINFORCED EMBANKM--ETC(U...AND ANALYSIS OF ~FABRIC-REINFORCED EMBANKMENT TEST if SECTION AT PINTO PASS, MOBILE, ALABAMA Lr: by Jack Fowler Geoechnical Laboratory I U. S. Army...AND ANALYSIS OF FABRIC- REINFORCED EMBANKMENT TEST SECTION AT PINTO PASS, MOBILE, ALABAMA 6. PERFORMING ORG. REPORT NUMBER 7. AUTHOR(e) 1. CONTRACT

  16. Malnutrition: role of the TwoCal HN Med Pass program.

    PubMed

    Bender, S; Pusateri, M; Cook, A; Ferguson, M; Hall, J C

    2000-12-01

    Malnutrition is common in older adults and is associated with poor outcomes. The causes and outcomes of malnutrition are discussed, and the TwoCal HN Med Pass program, designed to overcome poor dietary intake, is described. Benefits of the program, role of the pharmacist, identification of candidates for the TwoCal HN Med Pass program, and health care team roles and responsibilities are reviewed.

  17. Community Project for Accelerator Science and Simulation (ComPASS) Final Report

    SciTech Connect

    Cary, John R.; Cowan, Benjamin M.; Veitzer, S. A.

    2016-03-04

    Tech-X participated across the full range of ComPASS activities, with efforts in the Energy Frontier primarily through modeling of laser plasma accelerators and dielectric laser acceleration, in the Intensity Frontier primarily through electron cloud modeling, and in Uncertainty Quantification being applied to dielectric laser acceleration. In the following we present the progress and status of our activities for the entire period of the ComPASS project for the different areas of Energy Frontier, Intensity Frontier and Uncertainty Quantification.

  18. Global Identification of Protein Post-translational Modifications in a Single-Pass Database Search.

    PubMed

    Shortreed, Michael R; Wenger, Craig D; Frey, Brian L; Sheynkman, Gloria M; Scalf, Mark; Keller, Mark P; Attie, Alan D; Smith, Lloyd M

    2015-11-06

    Bottom-up proteomics database search algorithms used for peptide identification cannot comprehensively identify post-translational modifications (PTMs) in a single-pass because of high false discovery rates (FDRs). A new approach to database searching enables global PTM (G-PTM) identification by exclusively looking for curated PTMs, thereby avoiding the FDR penalty experienced during conventional variable modification searches. We identified over 2200 unique, high-confidence modified peptides comprising 26 different PTM types in a single-pass database search.

  19. Evaluating single-pass catch as a tool for identifying spatial pattern in fish distribution

    USGS Publications Warehouse

    Bateman, D.S.; Gresswell, R.E.; Torgersen, C.E.

    2005-01-01

    We evaluate the efficacy of single-pass electrofishing without blocknets as a tool for collecting spatially continuous fish distribution data in headwater streams. We compare spatial patterns in abundance, sampling effort, and length-frequency distributions from single-pass sampling of coastal cutthroat trout (Oncorhynchus clarki clarki) to data obtained from a more precise multiple-pass removal electrofishing method in two mid-sized (500–1000 ha) forested watersheds in western Oregon. Abundance estimates from single- and multiple-pass removal electrofishing were positively correlated in both watersheds, r = 0.99 and 0.86. There were no significant trends in capture probabilities at the watershed scale (P > 0.05). Moreover, among-sample variation in fish abundance was higher than within-sample error in both streams indicating that increased precision of unit-scale abundance estimates would provide less information on patterns of abundance than increasing the fraction of habitat units sampled. In the two watersheds, respectively, single-pass electrofishing captured 78 and 74% of the estimated population of cutthroat trout with 7 and 10% of the effort. At the scale of intermediate-sized watersheds, single-pass electrofishing exhibited a sufficient level of precision to be effective in detecting spatial patterns of cutthroat trout abundance and may be a useful tool for providing the context for investigating fish-habitat relationships at multiple scales.

  20. Melt rheology and molecular weight degradation of amylopectin during multiple pass extrusion of starch

    SciTech Connect

    Willett, J.L.; Millard, M.M.; Jasberg, B.K.

    1996-12-31

    The degradation of starch during extrusion and the role of specific mechanical energy (SME) in this process have been widely studied for single pass extrusion, Multiple extrusion histories are not uncommon in the plastics industry, but little if any has been reported on their effects on starch. Native waxy maize starch (app. 98% amylopectin) was initially converted to a thermoplastic by twin screw extrusion. This extrudate was equilibrated to either 18% or 23% moisture content, and subsequently re-extruded in a single screw extruder (3:1 compression screw) at 110{degrees}C or 130{degrees}C. Melt viscosity data were calculated using the output-pressure data from the second pass. The melts exhibited shear thinning behavior; the power law index increased with temperature, and slightly with moisture content. Molecular weights of selected second-pass extrudates, as well as the native starch and the first-pass extrudate, were measured by light scattering in dimethyl sulfoxide/water. The initial extrusion pass reduced the molecular weight from 300 million to 50 million. Molecular weight reductions in the second pass increased with increasing SME. A first order expression was shown to fit the MW-SME data with a correlation coefficient of 0.91. Implications of the degradation on extrusion processing of starch and the use of single screw extruders for rheological characterization will be discussed.

  1. Adaptive two-pass rank order filter to remove impulse noise in highly corrupted images.

    PubMed

    Xu, Xiaoyin; Miller, Eric L; Chen, Dongbin; Sarhadi, Mansoor

    2004-02-01

    In this paper, we present an adaptive two-pass rank order filter to remove impulse noise in highly corrupted images. When the noise ratio is high, rank order filters, such as the median filter for example, can produce unsatisfactory results. Better results can be obtained by applying the filter twice, which we call two-pass filtering. To further improve the performance, we develop an adaptive two-pass rank order filter. Between the passes of filtering, an adaptive process is used to detect irregularities in the spatial distribution of the estimated impulse noise. The adaptive process then selectively replaces some pixels changed by the first pass of filtering with their original observed pixel values. These pixels are then kept unchanged during the second filtering. In combination, the adaptive process and the second filter eliminate more impulse noise and restore some pixels that are mistakenly altered by the first filtering. As a final result, the reconstructed image maintains a higher degree of fidelity and has a smaller amount of noise. The idea of adaptive two-pass processing can be applied to many rank order filters, such as a center-weighted median filter (CWMF), adaptive CWMF, lower-upper-middle filter, and soft-decision rank-order-mean filter. Results from computer simulations are used to demonstrate the performance of this type of adaptation using a number of basic rank order filters.

  2. Mechanical and microstructural characterization of single and double pass Aluminum AA6061 friction stir weld joints

    NASA Astrophysics Data System (ADS)

    Othman, N. H.; Shah, L. H.; Ishak, M.

    2015-12-01

    This study focuses on the effect of single pass (SP), double sided pass (DSP) and normal double pass (NDP) method on friction stir welding of aluminum AA6061. Two pieces of AA6061 alloy with thickness of 6 mm were friction stir welded by using conventional milling machine. The rotational speeds that were used in this study were 800 rpm, 1000 rpm and 1200 rpm, respectively. The welding speed is fixed to 100 mm/min. Microstructure observation of welded area was studied by using optical microscope. Tensile test and Vickers hardness test were used to evaluate the mechanical properties of this specimen. Mechanical property analysis results indicate that at low rotational speeds, defects such as surface lack of fill and tunneling in the welded area can be observed. Vickers hardness of specimens however did not vary much when rotational speed is varied. Welded specimens using single pass method shows higher tensile strength and hardness value compared to both double pass methods up to 180.61 MPa. Moreover, DSP showed better tensile test and hardness test compared to NDP method. The optimum parameters were found to be single pass method with 1200 rpm of rotational speed. Therefore economically sound to only perform SP method to obtain maximum tensile strength for AA6061 FSW with thickness of 6 mm.

  3. JEMMRLA - Electron Model of a Muon RLA with Multi-pass Arcs

    SciTech Connect

    Bogacz, Slawomir Alex; Krafft, Geoffrey A.; Morozov, Vasiliy S.; Roblin, Yves R.

    2013-06-01

    We propose a demonstration experiment for a new concept of a 'dogbone' RLA with multi-pass return arcs -- JEMMRLA (Jlab Electron Model of Muon RLA). Such an RLA with linear-field multi-pass arcs was introduced for rapid acceleration of muons for the next generation of Muon Facilities. It allows for efficient use of expensive RF while the multi-pass arc design based on linear combined-function magnets exhibits a number of advantages over separate-arc or pulsed-arc designs. Here we describe a test of this concept by scaling a GeV scale muon design for electrons. Scaling muon momenta by the muon-to-electron mass ratio leads to a scheme, in which a 4.5 MeV electron beam is injected in the middle of a 3 MeV/pass linac with two double-pass return arcs and is accelerated to 18 MeV in 4.5 passes. All spatial dimensions including the orbit distortion are scaled by a factor of 7.5, which arises from scaling the 200 MHz muon RF to a readily available 1.5 GHz. The hardware requirements are not very demanding making it straightforward to implement. Such an RLA may have applications going beyond muon acceleration: in medical isotope production, radiation cancer therapy and homeland security.

  4. The MapCHECK Measurement Uncertainty function and its effect on planar dose pass rates.

    PubMed

    Bailey, Daniel W; Spaans, Jason D; Kumaraswamy, Lalith K; Podgorsak, Matthew B

    2016-03-01

    Our study aimed to quantify the effect of the Measurement Uncertainty function on planar dosimetry pass rates, as measured and analyzed with the Sun Nuclear Corporation MapCHECK 2 array and its associated software. This optional function is toggled in the program preferences of the software (though turned on by default upon installation), and automatically increases the dose difference tolerance defined by the user for each planar dose comparison. Dose planes from 109 static-gantry IMRT fields and 40 VMAT arcs, of varying modulation complexity, were measured at 5 cm water-equivalent depth in the MapCHECK 2 diode array, and respective calculated dose planes were exported from a commercial treatment planning system. Planar dose comparison pass rates were calculated within the Sun Nuclear Corporation analytic software using a number of calculation parameters, including Measurement Uncertainty on and off. By varying the percent difference (%Diff) criterion for similar analyses performed with Measurement Uncertainty turned off, an effective %Diff criterion was defined for each field/arc corresponding to the pass rate achieved with Measurement Uncertainty turned on. On average, the Measurement Uncertainty function increases the user-defined %Diff criterion by 0.8%-1.1% for 3%/3 mm analysis, depending on plan type and calculation technique (corresponding to an average change in pass rate of 1.0%-3.5%, and a maximum change of 8.7%). At the 2%/2 mm level, the Measurement Uncertainty function increases the user-defined %Diff criterion by 0.7%-1.2% on average, again depending on plan type and calculation technique (corresponding to an average change in pass rate of 3.5%-8.1%, and a maximum change of 14.2%). The largest increases in pass rate due to the Measurement Uncertainty function are generally seen with poorly matched planar dose comparisons, while the function has a notably smaller effect as pass rates approach 100%. The Measurement Uncertainty function, then, may

  5. The MapCHECK Measurement Uncertainty function and its effect on planar dose pass rates.

    PubMed

    Bailey, Daniel W; Spaans, Jason D; Kumaraswamy, Lalith K; Podgorsak, Matthew B

    2016-03-08

    Our study aimed to quantify the effect of the Measurement Uncertainty function on planar dosimetry pass rates, as measured and analyzed with the Sun Nuclear Corporation MapCHECK 2 array and its associated software. This optional function is toggled in the program preferences of the software (though turned on by default upon installation), and automatically increases the dose difference tolerance defined by the user for each planar dose comparison. Dose planes from 109 static-gantry IMRT fields and 40 VMAT arcs, of varying modulation complexity, were measured at 5 cm water-equivalent depth in the MapCHECK 2 diode array, and respective calculated dose planes were exported from a commercial treatment planning system. Planar dose comparison pass rates were calculated within the Sun Nuclear Corporation analytic software using a number of calculation parameters, including Measurement Uncertainty on and off. By varying the percent difference (%Diff) criterion for similar analyses performed with Measurement Uncertainty turned off, an effective %Diff criterion was defined for each field/arc corresponding to the pass rate achieved with Measurement Uncertainty turned on. On average, the Measurement Uncertainty function increases the user-defined %Diff criterion by 0.8%-1.1% for 3%/3 mm analysis, depending on plan type and calculation technique (corresponding to an average change in pass rate of 1.0%-3.5%, and a maximum change of 8.7%). At the 2%/2 mm level, the Measurement Uncertainty function increases the user-defined %Diff criterion by 0.7%-1.2% on average, again depending on plan type and calculation technique (corresponding to an average change in pass rate of 3.5%-8.1%, and a maximum change of 14.2%). The largest increases in pass rate due to the Measurement Uncertainty function are generally seen with poorly matched planar dose comparisons, while the function has a notably smaller effect as pass rates approach 100%. The Measurement Uncertainty function, then, may

  6. 26 CFR 20.2056(c)-1 - Marital deduction; definition of “passed from the decedent.”

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 16, 1954 Taxable Estate § 20.2056(c)-1 Marital deduction; definition of “passed from the decedent... interest “passed from the decedent”: (1) Property interests devolving upon any person (or persons) as... existed are considered as having passed from the decedent to such person (or persons). (2)...

  7. 40 CFR 90.510 - Compliance with acceptable quality level and passing and failing criteria for selective...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... level and passing and failing criteria for selective enforcement audits. 90.510 Section 90.510....510 Compliance with acceptable quality level and passing and failing criteria for selective... test sample until a pass decision is reached for all pollutants or a fail decision is reached for...

  8. 77 FR 29254 - Safety Zones, Large Cruise Ships; Lower Mississippi River, Southwest Pass Sea Buoy to Mile Marker...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-17

    ... River, Southwest Pass Sea Buoy to Mile Marker 96.0; New Orleans, LA AGENCY: Coast Guard, DHS. ACTION... Ship Terminal, mile marker 96.0 and the Southwest Pass Sea Buoy. The proposed moving safety zone..., mile marker 96.0, and the Southwest Pass Sea Buoy to address the increasing risk to safe...

  9. 33 CFR 162.80 - Mississippi River below mouth of Ohio River, including South and Southwest passes.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Ohio River, including South and Southwest passes. 162.80 Section 162.80 Navigation and Navigable Waters... passes. (a) Mooring on the Mississippi River between miles 311.5 AHP and 340.0 AHP. (1) No vessel or... withstand currents, winds, wave action, suction from passing vessels or any other forces which might...

  10. 40 CFR 89.510 - Compliance with acceptable quality level and passing and failing criteria for selective...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... level and passing and failing criteria for selective enforcement audits. 89.510 Section 89.510... Compliance with acceptable quality level and passing and failing criteria for selective enforcement audits... test sample until a pass decision is reached for all pollutants or a fail decision is reached for...

  11. 77 FR 66942 - Anchorages; Lower Mississippi River, Above Head of Passes, Convent, LA and Point Pleasant, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-08

    ... Passes, Convent, LA and Point Pleasant, LA AGENCY: Coast Guard, DHS. ACTION: Notice of proposed..., above the Head of Passes (AHP). The first would be located at the Belmont Light extending from Mile... above Head of Passes. The width of the anchorage is 300 feet. The inner boundary of the anchorage is...

  12. 22 CFR 9b.6 - Grounds for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... of Department of State press building passes. 9b.6 Section 9b.6 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.6 Grounds for denial, revocation, or non-renewal of Department of State press building passes. In consultation with the Bureau...

  13. 78 FR 11745 - Anchorages; Lower Mississippi River, Above Head of Passes, Convent, LA and Point Pleasant, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-20

    ... Passes, Convent, LA and Point Pleasant, LA AGENCY: Coast Guard, DHS. ACTION: Final rule. SUMMARY: The... Passes (AHP), located at the Belmont Light extending from Mile Marker (MM) 152.9 to 154 on the Left... needs of facilities along the river, and vessel traffic can pass safely around the anchorage....

  14. 40 CFR 86.1912 - How do I determine whether an engine meets the vehicle-pass criteria?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... meets the vehicle-pass criteria? 86.1912 Section 86.1912 Protection of Environment ENVIRONMENTAL....1912 How do I determine whether an engine meets the vehicle-pass criteria? In general, the average... steps to determine whether an engine meets the vehicle-pass criteria: (a) Determine the NTE...

  15. 40 CFR 91.608 - Compliance with acceptable quality level and passing and failing criteria for selective...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... level and passing and failing criteria for selective enforcement audits. 91.608 Section 91.608... with acceptable quality level and passing and failing criteria for selective enforcement audits. (a... manufacturer must test engines comprising the test sample until a pass decision is reached for HC+NOX or a...

  16. 9 CFR 312.2 - Official marks and devices to identify inspected and passed products of cattle, sheep, swine, or...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... inspected and passed products of cattle, sheep, swine, or goats. 312.2 Section 312.2 Animals and Animal..., DEVICES AND CERTIFICATES § 312.2 Official marks and devices to identify inspected and passed products of... subchapter to be applied to inspected and passed carcasses and parts of carcasses of cattle, sheep, swine...

  17. 48 CFR 52.215-22 - Limitations on Pass-Through Charges-Identification of Subcontract Effort.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Limitations on Pass... CONTRACT CLAUSES Text of Provisions and Clauses 52.215-22 Limitations on Pass-Through Charges... Pass-Through Charges—Identification of Subcontract Effort (OCT 2009) (a) Definitions. Added...

  18. 40 CFR 75.18 - Specific provisions for monitoring emissions from common and by-pass stacks for opacity.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... emissions from common and by-pass stacks for opacity. 75.18 Section 75.18 Protection of Environment... Provisions § 75.18 Specific provisions for monitoring emissions from common and by-pass stacks for opacity... emissions pass through the bypass stack. Method 9 shall be used in accordance with the applicable...

  19. 40 CFR 86.610-98 - Compliance with acceptable quality level and passing and failing criteria for Selective...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... level and passing and failing criteria for Selective Enforcement Audits. 86.610-98 Section 86.610-98... quality level and passing and failing criteria for Selective Enforcement Audits. (a) The prescribed... test procedures pursuant to § 86.608-98(a). (c)(1) Pass/fail criteria. The manufacturer shall...

  20. 75 FR 67086 - Sabine Pass Liquefaction, LLC; Opinion and Order Denying Request for Review Under Section 3(c) of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-01

    ... Sabine Pass Liquefaction, LLC; Opinion and Order Denying Request for Review Under Section 3(c) of the... opinion and order pursuant to section 3 of the Natural Gas Act (NGA), that Sabine Pass Liquefaction, LLC's (Sabine Pass) pending application of September 7, 2010, in DOE/FE Docket No. 10-111 LNG for...

  1. 77 FR 65816 - Safety Zone; Large Cruise Ships; Lower Mississippi River, Southwest Pass Sea Buoy to Mile Marker...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-31

    ..., Southwest Pass Sea Buoy to Mile Marker 96.0; New Orleans, LA AGENCY: Coast Guard, DHS. ACTION: Final rule..., and the Southwest Pass Sea Buoy. The moving safety zone extends from bank to bank encompassing one... marker 96.0, and the Southwest Pass Sea Buoy to address the increasing risk to safe navigation. For...

  2. 78 FR 28010 - Issuance of an Amendment to the Presidential Permit for the City of Eagle Pass International...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-13

    ... of an Amendment to the Presidential Permit for the City of Eagle Pass International Bridge Board Regarding the Port of Entry Known as Eagle Pass II SUMMARY: The Department of State issued an amendment to the Presidential Permit to the City of Eagle Pass International Bridge Board on May 2,...

  3. 22 CFR 9b.7 - Procedures for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...-renewal of Department of State press building passes. 9b.7 Section 9b.7 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.7 Procedures for denial, revocation, or non-renewal of Department of State press building passes. (a) If the Director...

  4. 48 CFR 252.247-7003 - Pass-Through of Motor Carrier Fuel Surcharge Adjustment To The Cost Bearer.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Pass-Through of Motor... SOLICITATION PROVISIONS AND CONTRACT CLAUSES Text of Provisions And Clauses 252.247-7003 Pass-Through of Motor...: PASS-THROUGH OF MOTOR CARRIER FUEL SURCHARGE ADJUSTMENT TO THE COST BEARER (SEP 2010) (a) This...

  5. 22 CFR 9b.7 - Procedures for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...-renewal of Department of State press building passes. 9b.7 Section 9b.7 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.7 Procedures for denial, revocation, or non-renewal of Department of State press building passes. (a) If the Director...

  6. 22 CFR 9b.7 - Procedures for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...-renewal of Department of State press building passes. 9b.7 Section 9b.7 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.7 Procedures for denial, revocation, or non-renewal of Department of State press building passes. (a) If the Director...

  7. 22 CFR 9b.7 - Procedures for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...-renewal of Department of State press building passes. 9b.7 Section 9b.7 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.7 Procedures for denial, revocation, or non-renewal of Department of State press building passes. (a) If the Director...

  8. 22 CFR 9b.6 - Grounds for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... of Department of State press building passes. 9b.6 Section 9b.6 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.6 Grounds for denial, revocation, or non-renewal of Department of State press building passes. In consultation with the Bureau...

  9. 22 CFR 9b.6 - Grounds for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... of Department of State press building passes. 9b.6 Section 9b.6 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.6 Grounds for denial, revocation, or non-renewal of Department of State press building passes. In consultation with the Bureau...

  10. 22 CFR 9b.7 - Procedures for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...-renewal of Department of State press building passes. 9b.7 Section 9b.7 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.7 Procedures for denial, revocation, or non-renewal of Department of State press building passes. (a) If the Director...

  11. 22 CFR 9b.6 - Grounds for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... of Department of State press building passes. 9b.6 Section 9b.6 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.6 Grounds for denial, revocation, or non-renewal of Department of State press building passes. In consultation with the Bureau...

  12. 22 CFR 9b.6 - Grounds for denial, revocation, or non-renewal of Department of State press building passes.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... of Department of State press building passes. 9b.6 Section 9b.6 Foreign Relations DEPARTMENT OF STATE GENERAL REGULATIONS GOVERNING DEPARTMENT OF STATE PRESS BUILDING PASSES § 9b.6 Grounds for denial, revocation, or non-renewal of Department of State press building passes. In consultation with the Bureau...

  13. 33 CFR 165.839 - Safety Zone; Large Cruise Ships; Lower Mississippi River, Southwest Pass Sea Buoy to Mile Marker...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...; Lower Mississippi River, Southwest Pass Sea Buoy to Mile Marker 96.0, New Orleans, LA. 165.839 Section...; Lower Mississippi River, Southwest Pass Sea Buoy to Mile Marker 96.0, New Orleans, LA. (a) Location. Within the Lower Mississippi River and Southwest Pass, moving safety zones are established around...

  14. 33 CFR 165.839 - Safety Zone; Large Cruise Ships; Lower Mississippi River, Southwest Pass Sea Buoy to Mile Marker...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...; Lower Mississippi River, Southwest Pass Sea Buoy to Mile Marker 96.0, New Orleans, LA. 165.839 Section...; Lower Mississippi River, Southwest Pass Sea Buoy to Mile Marker 96.0, New Orleans, LA. (a) Location. Within the Lower Mississippi River and Southwest Pass, moving safety zones are established around...

  15. The Physical Therapy and Society Summit (PASS) Meeting: observations and opportunities.

    PubMed

    Kigin, Colleen M; Rodgers, Mary M; Wolf, Steven L

    2010-11-01

    The construct of delivering high-quality and cost-effective health care is in flux, and the profession must strategically plan how to meet the needs of society. In 2006, the House of Delegates of the American Physical Therapy Association passed a motion to convene a summit on "how physical therapists can meet current, evolving, and future societal health care needs." The Physical Therapy and Society Summit (PASS) meeting on February 27-28, 2009, in Leesburg, Virginia, sent a clear message that for physical therapists to be effective and thrive in the health care environment of the future, a paradigm shift is required. During the PASS meeting, participants reframed our traditional focus on the physical therapist and the patient/client (consumer) to one in which physical therapists are an integral part of a collaborative, multidisciplinary health care team with the health care consumer as its focus. The PASS Steering Committee recognized that some of the opportunities that surfaced during the PASS meeting may be disruptive or may not be within the profession's present strategic or tactical plans. Thus, adopting a framework that helps to establish the need for change that is provocative and potentially disruptive to our present care delivery, yet prioritizes opportunities, is a critical and essential step. Each of us in the physical therapy profession must take on post-PASS roles and responsibilities to accomplish the systemic change that is so intimately intertwined with our destiny. This article offers a perspective of the dynamic dialogue and suggestions that emerged from the PASS event, providing further opportunities for discussion and action within our profession.

  16. Driver behavior during bicycle passing maneuvers in response to a Share the Road sign treatment.

    PubMed

    Kay, Jonathan J; Savolainen, Peter T; Gates, Timothy J; Datta, Tapan K

    2014-09-01

    The interaction of motorists and bicyclists, particularly during passing maneuvers, is an area of concern to the bicycle safety community as there is a general perception that motor vehicle drivers may not share the road effectively with bicyclists. This is a particular concern on road sections with centerline rumble strips where motorists are prone to crowd bicyclists during passing events. One potential countermeasure to address this concern is the use of a bicycle warning sign with a "Share the Road" plaque. This paper presents the results of a controlled field evaluation of this sign treatment, which involved an examination of driver behavior while overtaking bicyclists. A series of field studies were conducted concurrently on two segments of a high-speed, rural two-lane highway. These segments were similar in terms of roadway geometry, traffic volumes, and other relevant factors, except that one of the segments included centerline rumble strips while the other did not. A before-and-after study design was utilized to examine changes in motor vehicle lateral placement and speed at the time of the passing event as they relate to the presence of centerline rumble strips and the sign treatment. Centerline rumble strips generally shifted vehicles closer to the bicyclists during passing maneuvers, though the magnitude of this effect was marginal. The sign treatment was found to shift motor vehicles away from the rightmost lane positions, though the signs did not significantly affect the mean buffer distance between the bicyclists and passing motorists or the propensity of crowding events during passing. The sign treatment also resulted in a 2.5miles/h (4.0km/h) reduction in vehicle speeds. Vehicle type, bicyclist position, and the presence of opposing traffic were also found to affect lateral placement and speed selection during passing maneuvers.

  17. Passing Judgment

    ERIC Educational Resources Information Center

    Balaji, Murali

    2009-01-01

    From the time President Barack Obama introduced Sonia Sotomayor as his U.S. Supreme Court nominee to the day of her confirmation as an associate justice, conservative criticism of her nomination remained vocal and unrelenting. While some conservatives focused on Sotomayor's positions on gun rights and abortion, many seemed fixated with her…

  18. PASS Act

    THOMAS, 113th Congress

    Rep. King, Peter T. [R-NY-2

    2013-06-28

    07/15/2013 Referred to the Subcommittee on Crime, Terrorism, Homeland Security, and Investigations. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  19. Per-beam, planar IMRT QA passing rates do not predict clinically relevant patient dose errors

    SciTech Connect

    Nelms, Benjamin E.; Zhen Heming; Tome, Wolfgang A.

    2011-02-15

    Purpose: The purpose of this work is to determine the statistical correlation between per-beam, planar IMRT QA passing rates and several clinically relevant, anatomy-based dose errors for per-patient IMRT QA. The intent is to assess the predictive power of a common conventional IMRT QA performance metric, the Gamma passing rate per beam. Methods: Ninety-six unique data sets were created by inducing four types of dose errors in 24 clinical head and neck IMRT plans, each planned with 6 MV Varian 120-leaf MLC linear accelerators using a commercial treatment planning system and step-and-shoot delivery. The error-free beams/plans were used as ''simulated measurements'' (for generating the IMRT QA dose planes and the anatomy dose metrics) to compare to the corresponding data calculated by the error-induced plans. The degree of the induced errors was tuned to mimic IMRT QA passing rates that are commonly achieved using conventional methods. Results: Analysis of clinical metrics (parotid mean doses, spinal cord max and D1cc, CTV D95, and larynx mean) vs IMRT QA Gamma analysis (3%/3 mm, 2/2, 1/1) showed that in all cases, there were only weak to moderate correlations (range of Pearson's r-values: -0.295 to 0.653). Moreover, the moderate correlations actually had positive Pearson's r-values (i.e., clinically relevant metric differences increased with increasing IMRT QA passing rate), indicating that some of the largest anatomy-based dose differences occurred in the cases of high IMRT QA passing rates, which may be called ''false negatives.'' The results also show numerous instances of false positives or cases where low IMRT QA passing rates do not imply large errors in anatomy dose metrics. In none of the cases was there correlation consistent with high predictive power of planar IMRT passing rates, i.e., in none of the cases did high IMRT QA Gamma passing rates predict low errors in anatomy dose metrics or vice versa. Conclusions: There is a lack of correlation between

  20. On the Performance of the Martin Digital Filter for High- and Low-pass Applications

    NASA Technical Reports Server (NTRS)

    Mcclain, C. R.

    1979-01-01

    A nonrecursive numerical filter is described in which the weighting sequence is optimized by minimizing the excursion from the ideal rectangular filter in a least squares sense over the entire domain of normalized frequency. Additional corrections to the weights in order to reduce overshoot oscillations (Gibbs phenomenon) and to insure unity gain at zero frequency for the low pass filter are incorporated. The filter is characterized by a zero phase shift for all frequencies (due to a symmetric weighting sequence), a finite memory and stability, and it may readily be transformed to a high pass filter. Equations for the filter weights and the frequency response function are presented, and applications to high and low pass filtering are examined. A discussion of optimization of high pass filter parameters for a rather stringent response requirement is given in an application to the removal of aircraft low frequency oscillations superimposed on remotely sensed ocean surface profiles. Several frequency response functions are displayed, both in normalized frequency space and in period space. A comparison of the performance of the Martin filter with some other commonly used low pass digital filters is provided in an application to oceanographic data.