Science.gov

Sample records for acceptable computation time

  1. Computer acceptance of older adults.

    PubMed

    Nägle, Sibylle; Schmidt, Ludger

    2012-01-01

    Even though computers play a massive role in everyday life of modern societies, older adults, and especially older women, are less likely to use a computer, and they perform fewer activities on it than younger adults. To get a better understanding of the factors affecting older adults' intention towards and usage of computers, the Unified Theory of Acceptance and Usage of Technology (UTAUT) was applied as part of a more extensive study with 52 users and non-users of computers, ranging in age from 50 to 90 years. The model covers various aspects of computer usage in old age via four key constructs, namely performance expectancy, effort expectancy, social influences, and facilitating conditions, as well as the variables gender, age, experience, and voluntariness it. Interestingly, next to performance expectancy, facilitating conditions showed the strongest correlation with use as well as with intention. Effort expectancy showed no significant correlation with the intention of older adults to use a computer.

  2. The Acceptance and Use of Computer Based Assessment

    ERIC Educational Resources Information Center

    Terzis, Vasileios; Economides, Anastasios A.

    2011-01-01

    The effective development of a computer based assessment (CBA) depends on students' acceptance. The purpose of this study is to build a model that demonstrates the constructs that affect students' behavioral intention to use a CBA. The proposed model, Computer Based Assessment Acceptance Model (CBAAM) is based on previous models of technology…

  3. Prior Computer Experience and Technology Acceptance

    ERIC Educational Resources Information Center

    Varma, Sonali

    2010-01-01

    Prior computer experience with information technology has been identified as a key variable (Lee, Kozar, & Larsen, 2003) that can influence an individual's future use of newer computer technology. The lack of a theory driven approach to measuring prior experience has however led to conceptually different factors being used interchangeably in…

  4. Influence of Gender and Computer Teaching Efficacy on Computer Acceptance among Malaysian Student Teachers: An Extended Technology Acceptance Model

    ERIC Educational Resources Information Center

    Wong, Kung-Teck; Teo, Timothy; Russo, Sharon

    2012-01-01

    The purpose of this study is to validate the technology acceptance model (TAM) in an educational context and explore the role of gender and computer teaching efficacy as external variables. From the literature, it appeared that only limited studies had developed models to explain statistically the chain of influence of computer teaching efficacy…

  5. An acceptable role for computers in the aircraft design process

    NASA Technical Reports Server (NTRS)

    Gregory, T. J.; Roberts, L.

    1980-01-01

    Some of the reasons why the computerization trend is not wholly accepted are explored for two typical cases: computer use in the technical specialties and computer use in aircraft synthesis. The factors that limit acceptance are traced in part, to the large resources needed to understand the details of computer programs, the inability to include measured data as input to many of the theoretical programs, and the presentation of final results without supporting intermediate answers. Other factors are due solely to technical issues such as limited detail in aircraft synthesis and major simplifying assumptions in the technical specialties. These factors and others can be influenced by the technical specialist and aircraft designer. Some of these factors may become less significant as the computerization process evolves, but some issues, such as understanding large integrated systems, may remain issues in the future. Suggestions for improved acceptance include publishing computer programs so that they may be reviewed, edited, and read. Other mechanisms include extensive modularization of programs and ways to include measured information as part of the input to theoretical approaches.

  6. CSI computer system/remote interface unit acceptance test results

    NASA Technical Reports Server (NTRS)

    Sparks, Dean W., Jr.

    1992-01-01

    The validation tests conducted on the Control/Structures Interaction (CSI) Computer System (CCS)/Remote Interface Unit (RIU) is discussed. The CCS/RIU consists of a commercially available, Langley Research Center (LaRC) programmed, space flight qualified computer and a flight data acquisition and filtering computer, developed at LaRC. The tests were performed in the Space Structures Research Laboratory (SSRL) and included open loop excitation, closed loop control, safing, RIU digital filtering, and RIU stand alone testing with the CSI Evolutionary Model (CEM) Phase-0 testbed. The test results indicated that the CCS/RIU system is comparable to ground based systems in performing real-time control-structure experiments.

  7. Acceptance of brain-computer interfaces in amyotrophic lateral sclerosis.

    PubMed

    Geronimo, Andrew; Stephens, Helen E; Schiff, Steven J; Simmons, Zachary

    2015-06-01

    Brain-computer interfaces (BCI) have the potential to permit patients with amyotrophic lateral sclerosis (ALS) to communicate even when locked in. Although as many as half of patients with ALS develop cognitive or behavioral dysfunction, the impact of these factors on acceptance of and ability to use a BCI has not been studied. We surveyed patients with ALS and their caregivers about BCIs used as assistive communication tools. The survey focused on the features of a BCI system, the desired end-use functions, and requirements. Functional, cognitive, and behavioral data were collected from patients and analyzed for their influence over decisions about BCI device use. Results showed that behavioral impairment was associated with decreased receptivity to the use of BCI technology. In addition, the operation of a BCI system during a pilot study altered patients' opinions of the utility of the system, generally in line with their perceived performance at controlling the device. In conclusion, these two findings have implications for the engineering design and clinical care phases of assistive device deployment.

  8. 48 CFR 227.7203-14 - Conformity, acceptance, and warranty of computer software and computer software documentation.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ..., and warranty of computer software and computer software documentation. 227.7203-14 Section 227.7203-14... GENERAL CONTRACTING REQUIREMENTS PATENTS, DATA, AND COPYRIGHTS Rights in Computer Software and Computer Software Documentation 227.7203-14 Conformity, acceptance, and warranty of computer software and...

  9. 48 CFR 227.7203-14 - Conformity, acceptance, and warranty of computer software and computer software documentation.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., and warranty of computer software and computer software documentation. 227.7203-14 Section 227.7203-14... GENERAL CONTRACTING REQUIREMENTS PATENTS, DATA, AND COPYRIGHTS Rights in Computer Software and Computer Software Documentation 227.7203-14 Conformity, acceptance, and warranty of computer software and...

  10. 48 CFR 227.7203-14 - Conformity, acceptance, and warranty of computer software and computer software documentation.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., and warranty of computer software and computer software documentation. 227.7203-14 Section 227.7203-14... GENERAL CONTRACTING REQUIREMENTS PATENTS, DATA, AND COPYRIGHTS Rights in Computer Software and Computer Software Documentation 227.7203-14 Conformity, acceptance, and warranty of computer software and...

  11. 48 CFR 227.7203-14 - Conformity, acceptance, and warranty of computer software and computer software documentation.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ..., and warranty of computer software and computer software documentation. 227.7203-14 Section 227.7203-14... GENERAL CONTRACTING REQUIREMENTS PATENTS, DATA, AND COPYRIGHTS Rights in Computer Software and Computer Software Documentation 227.7203-14 Conformity, acceptance, and warranty of computer software and...

  12. 48 CFR 227.7203-14 - Conformity, acceptance, and warranty of computer software and computer software documentation.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., and warranty of computer software and computer software documentation. 227.7203-14 Section 227.7203-14... GENERAL CONTRACTING REQUIREMENTS PATENTS, DATA, AND COPYRIGHTS Rights in Computer Software and Computer Software Documentation 227.7203-14 Conformity, acceptance, and warranty of computer software and...

  13. Treatment Fidelity: Relation to Treatment Acceptability and Change over Time

    ERIC Educational Resources Information Center

    Tanol, Gizem

    2010-01-01

    The purpose of this study was: (a) to examine the relation between acceptability and fidelity of an intervention package in natural classroom settings, and (b) to examine how fidelity of implementation varies in relation to high vs. low treatment acceptability over the course of an academic school year. Participants were 44 teachers, from 15…

  14. Uncertainty versus computer response time

    SciTech Connect

    Rowe, W.D. |

    1994-12-31

    Interactive on-line presentation of risk analysis results with immediate ``what if`` capability is now possible with available microcomputer technology. This can provide an effective means off presenting the risk results, the decision possibilities, and the underlying assumptions to decision makers, stakeholders, and the public. However, the limitation of computer calculational power on microcomputers requires a trade-off between the precision of the analysis and the computing and display response time. Fortunately, the uncertainties in the risk analysis are usually so large that extreme precision is often unwarranted. Therefore, risk analyses used for this purpose must include trade-offs between precision and processing time, and uncertainties introduced must be put into perspective.

  15. Modeling Computer Usage Intentions of Tertiary Students in a Developing Country through the Technology Acceptance Model

    ERIC Educational Resources Information Center

    Afari-Kumah, Eben; Achampong, Akwasi Kyere

    2010-01-01

    This study aims to examine the computer usage intentions of Ghanaian Tertiary Students. The Technology Acceptance Model was adopted as the theoretical framework to ascertain whether it could help explain behavioral intentions of individuals to accept and use technology. Factor analysis was used to assess the construct validity of the initial…

  16. The Impact of Iranian Teachers Cultural Values on Computer Technology Acceptance

    ERIC Educational Resources Information Center

    Sadeghi, Karim; Saribagloo, Javad Amani; Aghdam, Samad Hanifepour; Mahmoudi, Hojjat

    2014-01-01

    This study was conducted with the aim of testing the technology acceptance model and the impact of Hofstede cultural values (masculinity/femininity, uncertainty avoidance, individualism/collectivism, and power distance) on computer technology acceptance among teachers at Urmia city (Iran) using the structural equation modeling approach. From among…

  17. 12 CFR 1102.27 - Computing time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 10 2014-01-01 2014-01-01 false Computing time. 1102.27 Section 1102.27 Banks... for Proceedings § 1102.27 Computing time. (a) General rule. In computing any period of time prescribed... time begins to run is not included. The last day so computed is included, unless it is a...

  18. 12 CFR 1102.27 - Computing time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 7 2011-01-01 2011-01-01 false Computing time. 1102.27 Section 1102.27 Banks... for Proceedings § 1102.27 Computing time. (a) General rule. In computing any period of time prescribed... time begins to run is not included. The last day so computed is included, unless it is a...

  19. 12 CFR 1102.27 - Computing time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 9 2013-01-01 2013-01-01 false Computing time. 1102.27 Section 1102.27 Banks... for Proceedings § 1102.27 Computing time. (a) General rule. In computing any period of time prescribed... time begins to run is not included. The last day so computed is included, unless it is a...

  20. 12 CFR 1102.27 - Computing time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Computing time. 1102.27 Section 1102.27 Banks... for Proceedings § 1102.27 Computing time. (a) General rule. In computing any period of time prescribed... time begins to run is not included. The last day so computed is included, unless it is a...

  1. Computational work and time on finite machines.

    NASA Technical Reports Server (NTRS)

    Savage, J. E.

    1972-01-01

    Measures of the computational work and computational delay required by machines to compute functions are given. Exchange inequalities are developed for random access, tape, and drum machines to show that product inequalities between storage and time, number of drum tracks and time, number of bits in an address and time, etc., must be satisfied to compute finite functions on bounded machines.

  2. 17 CFR 201.160 - Time computation.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 17 Commodity and Securities Exchanges 2 2011-04-01 2011-04-01 false Time computation. 201.160... Rules of Practice General Rules § 201.160 Time computation. (a) Computation. In computing any period of time prescribed in or allowed by these Rules of Practice or by order of the Commission, the day of...

  3. 17 CFR 201.160 - Time computation.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 17 Commodity and Securities Exchanges 2 2013-04-01 2013-04-01 false Time computation. 201.160... Rules of Practice General Rules § 201.160 Time computation. (a) Computation. In computing any period of time prescribed in or allowed by these Rules of Practice or by order of the Commission, the day of...

  4. 17 CFR 201.160 - Time computation.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 17 Commodity and Securities Exchanges 2 2012-04-01 2012-04-01 false Time computation. 201.160... Rules of Practice General Rules § 201.160 Time computation. (a) Computation. In computing any period of time prescribed in or allowed by these Rules of Practice or by order of the Commission, the day of...

  5. 12 CFR 622.21 - Computing time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 6 2010-01-01 2010-01-01 false Computing time. 622.21 Section 622.21 Banks and... Formal Hearings § 622.21 Computing time. (a) General rule. In computing any period of time prescribed or... run is not to be included. The last day so computed shall be included, unless it is a Saturday,...

  6. 24 CFR 180.405 - Time computations.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 24 Housing and Urban Development 1 2013-04-01 2013-04-01 false Time computations. 180.405 Section... Hearing § 180.405 Time computations. (a) In computing time under this part, the time period begins the day... Saturday, Sunday, or legal holiday observed by the Federal Government, in which case the time...

  7. 24 CFR 180.405 - Time computations.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 1 2011-04-01 2011-04-01 false Time computations. 180.405 Section... Hearing § 180.405 Time computations. (a) In computing time under this part, the time period begins the day... Saturday, Sunday, or legal holiday observed by the Federal Government, in which case the time...

  8. 24 CFR 180.405 - Time computations.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 24 Housing and Urban Development 1 2014-04-01 2014-04-01 false Time computations. 180.405 Section... Hearing § 180.405 Time computations. (a) In computing time under this part, the time period begins the day... Saturday, Sunday, or legal holiday observed by the Federal Government, in which case the time...

  9. 24 CFR 180.405 - Time computations.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 24 Housing and Urban Development 1 2012-04-01 2012-04-01 false Time computations. 180.405 Section... Hearing § 180.405 Time computations. (a) In computing time under this part, the time period begins the day... Saturday, Sunday, or legal holiday observed by the Federal Government, in which case the time...

  10. 24 CFR 180.405 - Time computations.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false Time computations. 180.405 Section... Hearing § 180.405 Time computations. (a) In computing time under this part, the time period begins the day... Saturday, Sunday, or legal holiday observed by the Federal Government, in which case the time...

  11. 29 CFR 18.4 - Time computations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 1 2011-07-01 2011-07-01 false Time computations. 18.4 Section 18.4 Labor Office of the... ADMINISTRATIVE LAW JUDGES General § 18.4 Time computations. (a) Generally. In computing any period of time under these rules or in an order issued hereunder the time begins with the day following the act, event,...

  12. 24 CFR 26.31 - Time computations.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 24 Housing and Urban Development 1 2013-04-01 2013-04-01 false Time computations. 26.31 Section 26... HEARING PROCEDURES Hearings Pursuant to the Administrative Procedure Act § 26.31 Time computations. (a) General. In computing any period of time under subpart B of this part, the time period begins the...

  13. 24 CFR 26.31 - Time computations.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 24 Housing and Urban Development 1 2014-04-01 2014-04-01 false Time computations. 26.31 Section 26... HEARING PROCEDURES Hearings Pursuant to the Administrative Procedure Act § 26.31 Time computations. (a) General. In computing any period of time under subpart B of this part, the time period begins the...

  14. 29 CFR 102.111 - Time computation.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 2 2013-07-01 2013-07-01 false Time computation. 102.111 Section 102.111 Labor Regulations... Papers § 102.111 Time computation. (a) In computing any period of time prescribed or allowed by these rules, the day of the act, event, or default after which the designated period of time begins to run...

  15. 24 CFR 1720.165 - Time computation.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 24 Housing and Urban Development 5 2014-04-01 2014-04-01 false Time computation. 1720.165 Section... Proceedings General Provisions § 1720.165 Time computation. Computation of any period of time prescribed or... or default initiating such period of time shall have occurred. When the last day of the period...

  16. 29 CFR 18.4 - Time computations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 1 2012-07-01 2012-07-01 false Time computations. 18.4 Section 18.4 Labor Office of the... ADMINISTRATIVE LAW JUDGES General § 18.4 Time computations. (a) Generally. In computing any period of time under these rules or in an order issued hereunder the time begins with the day following the act, event,...

  17. 12 CFR 622.21 - Computing time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 7 2014-01-01 2014-01-01 false Computing time. 622.21 Section 622.21 Banks and... Formal Hearings § 622.21 Computing time. (a) General rule. In computing any period of time prescribed or allowed by this subpart, the date of the act or event from which the designated period of time begins...

  18. 24 CFR 26.31 - Time computations.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 1 2011-04-01 2011-04-01 false Time computations. 26.31 Section 26... HEARING PROCEDURES Hearings Pursuant to the Administrative Procedure Act § 26.31 Time computations. (a) General. In computing any period of time under subpart B of this part, the time period begins the...

  19. 29 CFR 102.111 - Time computation.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 2 2012-07-01 2012-07-01 false Time computation. 102.111 Section 102.111 Labor Regulations... Papers § 102.111 Time computation. (a) In computing any period of time prescribed or allowed by these rules, the day of the act, event, or default after which the designated period of time begins to run...

  20. 24 CFR 1720.165 - Time computation.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 24 Housing and Urban Development 5 2013-04-01 2013-04-01 false Time computation. 1720.165 Section... Proceedings General Provisions § 1720.165 Time computation. Computation of any period of time prescribed or... or default initiating such period of time shall have occurred. When the last day of the period...

  1. 28 CFR 76.8 - Time computations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 2 2014-07-01 2014-07-01 false Time computations. 76.8 Section 76.8... PENALTIES FOR POSSESSION OF CERTAIN CONTROLLED SUBSTANCES § 76.8 Time computations. (a) Generally. In computing any period of time under this part or in an order issued hereunder, the time begins with the...

  2. 28 CFR 76.8 - Time computations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 2 2013-07-01 2013-07-01 false Time computations. 76.8 Section 76.8... PENALTIES FOR POSSESSION OF CERTAIN CONTROLLED SUBSTANCES § 76.8 Time computations. (a) Generally. In computing any period of time under this part or in an order issued hereunder, the time begins with the...

  3. 28 CFR 76.8 - Time computations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 2 2011-07-01 2011-07-01 false Time computations. 76.8 Section 76.8... PENALTIES FOR POSSESSION OF CERTAIN CONTROLLED SUBSTANCES § 76.8 Time computations. (a) Generally. In computing any period of time under this part or in an order issued hereunder, the time begins with the...

  4. 24 CFR 1720.165 - Time computation.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 5 2011-04-01 2011-04-01 false Time computation. 1720.165 Section... Proceedings General Provisions § 1720.165 Time computation. Computation of any period of time prescribed or... or default initiating such period of time shall have occurred. When the last day of the period...

  5. 28 CFR 76.8 - Time computations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 2 2012-07-01 2012-07-01 false Time computations. 76.8 Section 76.8... PENALTIES FOR POSSESSION OF CERTAIN CONTROLLED SUBSTANCES § 76.8 Time computations. (a) Generally. In computing any period of time under this part or in an order issued hereunder, the time begins with the...

  6. 24 CFR 1720.165 - Time computation.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 24 Housing and Urban Development 5 2012-04-01 2012-04-01 false Time computation. 1720.165 Section... Proceedings General Provisions § 1720.165 Time computation. Computation of any period of time prescribed or... or default initiating such period of time shall have occurred. When the last day of the period...

  7. 29 CFR 102.111 - Time computation.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 2 2014-07-01 2014-07-01 false Time computation. 102.111 Section 102.111 Labor Regulations... Papers § 102.111 Time computation. (a) In computing any period of time prescribed or allowed by these rules, the day of the act, event, or default after which the designated period of time begins to run...

  8. 12 CFR 622.21 - Computing time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 7 2012-01-01 2012-01-01 false Computing time. 622.21 Section 622.21 Banks and... Formal Hearings § 622.21 Computing time. (a) General rule. In computing any period of time prescribed or allowed by this subpart, the date of the act or event from which the designated period of time begins...

  9. 12 CFR 622.21 - Computing time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 7 2013-01-01 2013-01-01 false Computing time. 622.21 Section 622.21 Banks and... Formal Hearings § 622.21 Computing time. (a) General rule. In computing any period of time prescribed or allowed by this subpart, the date of the act or event from which the designated period of time begins...

  10. 24 CFR 26.31 - Time computations.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 24 Housing and Urban Development 1 2012-04-01 2012-04-01 false Time computations. 26.31 Section 26... HEARING PROCEDURES Hearings Pursuant to the Administrative Procedure Act § 26.31 Time computations. (a) General. In computing any period of time under subpart B of this part, the time period begins the...

  11. 29 CFR 18.4 - Time computations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 1 2013-07-01 2013-07-01 false Time computations. 18.4 Section 18.4 Labor Office of the... ADMINISTRATIVE LAW JUDGES General § 18.4 Time computations. (a) Generally. In computing any period of time under these rules or in an order issued hereunder the time begins with the day following the act, event,...

  12. 24 CFR 1720.165 - Time computation.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 5 2010-04-01 2010-04-01 false Time computation. 1720.165 Section... Proceedings General Provisions § 1720.165 Time computation. Computation of any period of time prescribed or... or default initiating such period of time shall have occurred. When the last day of the period...

  13. 24 CFR 26.31 - Time computations.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false Time computations. 26.31 Section 26... HEARING PROCEDURES Hearings Pursuant to the Administrative Procedure Act § 26.31 Time computations. (a) General. In computing any period of time under subpart B of this part, the time period begins the...

  14. 29 CFR 102.111 - Time computation.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 2 2010-07-01 2010-07-01 false Time computation. 102.111 Section 102.111 Labor Regulations... Papers § 102.111 Time computation. (a) In computing any period of time prescribed or allowed by these rules, the day of the act, event, or default after which the designated period of time begins to run...

  15. Synchronizing compute node time bases in a parallel computer

    DOEpatents

    Chen, Dong; Faraj, Daniel A; Gooding, Thomas M; Heidelberger, Philip

    2015-01-27

    Synchronizing time bases in a parallel computer that includes compute nodes organized for data communications in a tree network, where one compute node is designated as a root, and, for each compute node: calculating data transmission latency from the root to the compute node; configuring a thread as a pulse waiter; initializing a wakeup unit; and performing a local barrier operation; upon each node completing the local barrier operation, entering, by all compute nodes, a global barrier operation; upon all nodes entering the global barrier operation, sending, to all the compute nodes, a pulse signal; and for each compute node upon receiving the pulse signal: waking, by the wakeup unit, the pulse waiter; setting a time base for the compute node equal to the data transmission latency between the root node and the compute node; and exiting the global barrier operation.

  16. Synchronizing compute node time bases in a parallel computer

    DOEpatents

    Chen, Dong; Faraj, Daniel A; Gooding, Thomas M; Heidelberger, Philip

    2014-12-30

    Synchronizing time bases in a parallel computer that includes compute nodes organized for data communications in a tree network, where one compute node is designated as a root, and, for each compute node: calculating data transmission latency from the root to the compute node; configuring a thread as a pulse waiter; initializing a wakeup unit; and performing a local barrier operation; upon each node completing the local barrier operation, entering, by all compute nodes, a global barrier operation; upon all nodes entering the global barrier operation, sending, to all the compute nodes, a pulse signal; and for each compute node upon receiving the pulse signal: waking, by the wakeup unit, the pulse waiter; setting a time base for the compute node equal to the data transmission latency between the root node and the compute node; and exiting the global barrier operation.

  17. 24 CFR 26.11 - Time computation.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 24 Housing and Urban Development 1 2014-04-01 2014-04-01 false Time computation. 26.11 Section 26... HEARING PROCEDURES Hearings Before Hearing Officers Pleadings and Motions § 26.11 Time computation. (a) Generally. Computation of any period of time prescribed or allowed by this part shall begin with the...

  18. 16 CFR 1115.14 - Time computations.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 16 Commercial Practices 2 2014-01-01 2014-01-01 false Time computations. 1115.14 Section 1115.14... PRODUCT HAZARD REPORTS General Interpretation § 1115.14 Time computations. (a) General. Weekends and holidays are excluded from the computation of the time periods in this part. (b) Imputing knowledge....

  19. 24 CFR 14.100 - Time computation.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 24 Housing and Urban Development 1 2013-04-01 2013-04-01 false Time computation. 14.100 Section 14... IMPLEMENTATION OF THE EQUAL ACCESS TO JUSTICE ACT IN ADMINISTRATIVE PROCEEDINGS General Provisions § 14.100 Time computation. Time periods stated in this part shall be computed in accordance with the Department's rules...

  20. 28 CFR 68.8 - Time computations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 2 2012-07-01 2012-07-01 false Time computations. 68.8 Section 68.8... ALIENS, UNFAIR IMMIGRATION-RELATED EMPLOYMENT PRACTICES, AND DOCUMENT FRAUD § 68.8 Time computations. (a) Generally. In computing any period of time under these rules or in an order issued hereunder, the...

  1. 12 CFR 1209.17 - Time computations.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 10 2014-01-01 2014-01-01 false Time computations. 1209.17 Section 1209.17... PROCEDURE Rules of Practice and Procedure § 1209.17 Time computations. (a) General rule. In computing any period of time prescribed or allowed under this part, the date of the act or event that commences...

  2. 28 CFR 68.8 - Time computations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 2 2014-07-01 2014-07-01 false Time computations. 68.8 Section 68.8... ALIENS, UNFAIR IMMIGRATION-RELATED EMPLOYMENT PRACTICES, AND DOCUMENT FRAUD § 68.8 Time computations. (a) Generally. In computing any period of time under these rules or in an order issued hereunder, the...

  3. 16 CFR 1115.14 - Time computations.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 16 Commercial Practices 2 2013-01-01 2013-01-01 false Time computations. 1115.14 Section 1115.14... PRODUCT HAZARD REPORTS General Interpretation § 1115.14 Time computations. (a) General. Weekends and holidays are excluded from the computation of the time periods in this part. (b) Imputing knowledge....

  4. 12 CFR 1209.17 - Time computations.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 9 2013-01-01 2013-01-01 false Time computations. 1209.17 Section 1209.17... PROCEDURE Rules of Practice and Procedure § 1209.17 Time computations. (a) General rule. In computing any period of time prescribed or allowed under this part, the date of the act or event that commences...

  5. 24 CFR 14.100 - Time computation.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 1 2011-04-01 2011-04-01 false Time computation. 14.100 Section 14... IMPLEMENTATION OF THE EQUAL ACCESS TO JUSTICE ACT IN ADMINISTRATIVE PROCEEDINGS General Provisions § 14.100 Time computation. Time periods stated in this part shall be computed in accordance with the Department's rules...

  6. 24 CFR 26.11 - Time computation.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 24 Housing and Urban Development 1 2012-04-01 2012-04-01 false Time computation. 26.11 Section 26... HEARING PROCEDURES Hearings Before Hearing Officers Pleadings and Motions § 26.11 Time computation. (a) Generally. Computation of any period of time prescribed or allowed by this part shall begin with the...

  7. 28 CFR 68.8 - Time computations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 2 2013-07-01 2013-07-01 false Time computations. 68.8 Section 68.8... ALIENS, UNFAIR IMMIGRATION-RELATED EMPLOYMENT PRACTICES, AND DOCUMENT FRAUD § 68.8 Time computations. (a) Generally. In computing any period of time under these rules or in an order issued hereunder, the...

  8. 24 CFR 14.100 - Time computation.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 24 Housing and Urban Development 1 2012-04-01 2012-04-01 false Time computation. 14.100 Section 14... IMPLEMENTATION OF THE EQUAL ACCESS TO JUSTICE ACT IN ADMINISTRATIVE PROCEEDINGS General Provisions § 14.100 Time computation. Time periods stated in this part shall be computed in accordance with the Department's rules...

  9. 24 CFR 26.11 - Time computation.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 24 Housing and Urban Development 1 2013-04-01 2013-04-01 false Time computation. 26.11 Section 26... HEARING PROCEDURES Hearings Before Hearing Officers Pleadings and Motions § 26.11 Time computation. (a) Generally. Computation of any period of time prescribed or allowed by this part shall begin with the...

  10. 24 CFR 26.11 - Time computation.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 1 2011-04-01 2011-04-01 false Time computation. 26.11 Section 26... HEARING PROCEDURES Hearings Before Hearing Officers Pleadings and Motions § 26.11 Time computation. (a) Generally. Computation of any period of time prescribed or allowed by this part shall begin with the...

  11. 12 CFR 908.27 - Computing time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 7 2011-01-01 2011-01-01 false Computing time. 908.27 Section 908.27 Banks and... PRACTICE AND PROCEDURE IN HEARINGS ON THE RECORD General Rules § 908.27 Computing time. (a) General rule. In computing any period of time prescribed or allowed by this subpart, the date of the act or...

  12. 24 CFR 14.100 - Time computation.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 24 Housing and Urban Development 1 2014-04-01 2014-04-01 false Time computation. 14.100 Section 14... IMPLEMENTATION OF THE EQUAL ACCESS TO JUSTICE ACT IN ADMINISTRATIVE PROCEEDINGS General Provisions § 14.100 Time computation. Time periods stated in this part shall be computed in accordance with the Department's rules...

  13. 16 CFR 1115.14 - Time computations.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 2 2012-01-01 2012-01-01 false Time computations. 1115.14 Section 1115.14... PRODUCT HAZARD REPORTS General Interpretation § 1115.14 Time computations. (a) General. Weekends and holidays are excluded from the computation of the time periods in this part. (b) Imputing knowledge....

  14. 28 CFR 68.8 - Time computations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 2 2011-07-01 2011-07-01 false Time computations. 68.8 Section 68.8... ALIENS, UNFAIR IMMIGRATION-RELATED EMPLOYMENT PRACTICES, AND DOCUMENT FRAUD § 68.8 Time computations. (a) Generally. In computing any period of time under these rules or in an order issued hereunder, the...

  15. 24 CFR 26.11 - Time computation.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false Time computation. 26.11 Section 26... HEARING PROCEDURES Hearings Before Hearing Officers Pleadings and Motions § 26.11 Time computation. (a) Generally. Computation of any period of time prescribed or allowed by this part shall begin with the...

  16. 24 CFR 14.100 - Time computation.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false Time computation. 14.100 Section 14... IMPLEMENTATION OF THE EQUAL ACCESS TO JUSTICE ACT IN ADMINISTRATIVE PROCEEDINGS General Provisions § 14.100 Time computation. Time periods stated in this part shall be computed in accordance with the Department's rules...

  17. 12 CFR 908.27 - Computing time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Computing time. 908.27 Section 908.27 Banks and... PRACTICE AND PROCEDURE IN HEARINGS ON THE RECORD General Rules § 908.27 Computing time. (a) General rule. In computing any period of time prescribed or allowed by this subpart, the date of the act or...

  18. 12 CFR 1780.11 - Computing time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Computing time. 1780.11 Section 1780.11 Banks... DEVELOPMENT RULES OF PRACTICE AND PROCEDURE RULES OF PRACTICE AND PROCEDURE General Rules § 1780.11 Computing time. (a) General rule. In computing any period of time prescribed or allowed by this subpart, the...

  19. 12 CFR 1780.11 - Computing time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 7 2011-01-01 2011-01-01 false Computing time. 1780.11 Section 1780.11 Banks... time. (a) General rule. In computing any period of time prescribed or allowed by this subpart, the date of the act or event that commences the designated period of time is not included. The last day...

  20. 76 FR 47529 - Customer Clearing Documentation and Timing of Acceptance for Clearing; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-05

    ... Street, NW., Washington, DC 20581. SUPPLEMENTARY INFORMATION: In FR Doc. 2011-19365 appearing on page... COMMISSION 17 CFR Parts 1, 23, and 39 RIN 3038-AD51 Customer Clearing Documentation and Timing of Acceptance... August 1, 2011, regarding Customer Clearing Documentation and Timing of Acceptance for Clearing....

  1. 16 CFR 1115.14 - Time computations.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... holidays are excluded from the computation of the time periods in this part. (b) Imputing knowledge. In... spend a reasonable time for investigation and evaluation. (See § 1115.14(d).) (d) Time for...

  2. 16 CFR 1115.14 - Time computations.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... holidays are excluded from the computation of the time periods in this part. (b) Imputing knowledge. In... spend a reasonable time for investigation and evaluation. (See § 1115.14(d).) (d) Time for...

  3. Computer-aided feature extraction, classification, and acceptance processing of digital NDE data

    NASA Astrophysics Data System (ADS)

    Hildreth, Joseph H.

    1996-11-01

    As part of the advanced Launch System technology development effort begun in 1989, the Air Force initiated a program to automate, to the extent possible, the processing of NDE data from the inspection of slid rocket motors during fabrication. The computerized system, called the Automated NDE Data Evaluation System or ANDES, was developed under contract to Martin Marietta, now Lockheed Martin. The ANDES system is generic in structure and is highly tailorable. The system can be configured to process digital or digitized data from any source, to process data from a single or from multiple acquisition systems, and to function as a single stand-alone system or in a multiple workstation distributed network. The system can maintain multiple configurations from which the user can select. In large measure, a configuration is defined through the system's user interface and is stored in the system's data base to be recalled by the user at any time. Three operational systems are currently in use. These systems ar located at Hill AFB in Ogden, Utah, Kelly AFB in San Antonio, TX, and the Phillips Laboratory at Edwards AFB in California. Each of these systems is configured to process x-ray computed tomography, CT, images. The Hill AFB installation supports the aging surveillance effort on Minuteman third stage rocket motors. The Kelly AFB system supports the acceptance inspection of airframe and engine components and torpedo housing components. The installation at Edwards AFB provides technical support to the other two locations.

  4. 76 FR 46840 - Time Extension To Accept Proposals, Select One Lessee, and Contract for Hydroelectric Power...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-03

    ... notice was originally published in the Federal Register on April 20, 2011 (76 FR 22143). The due date was... Bureau of Reclamation Time Extension To Accept Proposals, Select One Lessee, and Contract for... proposals detailed in the Notice of Intent to Accept Proposals, Select One Lessee, and Contract...

  5. Acceptance of Spousal Death: The Factor of Time in Bereaved Older Adults' Search for Meaning

    ERIC Educational Resources Information Center

    Chan, Wallace Chi Ho; Chan, Cecilia L. W.

    2011-01-01

    Response to the death of a spouse was examined by focusing on acceptance, which was conceptualized as both a process and an outcome. Grounded theory was applied to analyze the experience of 15 bereaved Hong Kong Chinese older adults. The main theme that emerged was time. Acceptance of spousal death was found to be related to the search for meaning…

  6. COOLING TIME, FREEFALL TIME, AND PRECIPITATION IN THE CORES OF ACCEPT GALAXY CLUSTERS

    SciTech Connect

    Voit, G. Mark; Donahue, Megan

    2015-01-20

    Star formation in the universe's largest galaxies—the ones at the centers of galaxy clusters—depends critically on the thermodynamic state of their hot gaseous atmospheres. Central galaxies with low-entropy, high-density atmospheres frequently contain multiphase star-forming gas, while those with high-entropy, low-density atmospheres never do. The dividing line between these two populations in central entropy, and therefore central cooling time, is amazingly sharp. Two hypotheses have been proposed to explain the dichotomy. One points out that thermal conduction can prevent radiative cooling of cluster cores above the dividing line. The other holds that cores below the dividing line are subject to thermal instability that fuels the central active galactic nucleus (AGN) through a cold-feedback mechanism. Here we explore those hypotheses with an analysis of the Hα properties of ACCEPT galaxy clusters. We find that the two hypotheses are likely to be complementary. Our results support a picture in which cold clouds inevitably precipitate out of cluster cores in which cooling outcompetes thermal conduction and rain down on the central black hole, causing AGN feedback that stabilizes the cluster core. In particular, the observed distribution of the cooling-time to freefall-time ratio is nearly identical to that seen in simulations of this cold-feedback process, implying that cold-phase accretion, and not Bondi-like accretion of hot-phase gas, is responsible for the AGN feedback that regulates star formation in large galaxies.

  7. Time-Domain Impedance Boundary Conditions for Computational Aeroacoustics

    NASA Technical Reports Server (NTRS)

    Tam, Christopher K. W.; Auriault, Laurent

    1996-01-01

    It is an accepted practice in aeroacoustics to characterize the properties of an acoustically treated surface by a quantity known as impedance. Impedance is a complex quantity. As such, it is designed primarily for frequency-domain analysis. Time-domain boundary conditions that are the equivalent of the frequency-domain impedance boundary condition are proposed. Both single frequency and model broadband time-domain impedance boundary conditions are provided. It is shown that the proposed boundary conditions, together with the linearized Euler equations, form well-posed initial boundary value problems. Unlike ill-posed problems, they are free from spurious instabilities that would render time-marching computational solutions impossible.

  8. Characterization of real-time computers

    NASA Technical Reports Server (NTRS)

    Shin, K. G.; Krishna, C. M.

    1984-01-01

    A real-time system consists of a computer controller and controlled processes. Despite the synergistic relationship between these two components, they have been traditionally designed and analyzed independently of and separately from each other; namely, computer controllers by computer scientists/engineers and controlled processes by control scientists. As a remedy for this problem, in this report real-time computers are characterized by performance measures based on computer controller response time that are: (1) congruent to the real-time applications, (2) able to offer an objective comparison of rival computer systems, and (3) experimentally measurable/determinable. These measures, unlike others, provide the real-time computer controller with a natural link to controlled processes. In order to demonstrate their utility and power, these measures are first determined for example controlled processes on the basis of control performance functionals. They are then used for two important real-time multiprocessor design applications - the number-power tradeoff and fault-masking and synchronization.

  9. Disc pack cleaning table saves computer time

    NASA Technical Reports Server (NTRS)

    Guy, J. T., Sr.

    1970-01-01

    Disc pack holding table is support frame upon which computer disc pack is loaded and protective cover released. This combination permits manual off-line cleaning of disc pack storage units at any time without shutting down the computer, and eliminates on-line disc drive unit to hold pack during cleaning.

  10. General purpose computers in real time

    SciTech Connect

    Biel, J.R.

    1989-09-18

    I see three main trends in the use of general purpose computers in real time. The first is more processing power. The second is the use of higher speed interconnects between computers (allowing more data to be delivered to the processors). The third is the use of larger programs running in the computers. Although there is still work that needs to be done, I believe that all indications are that the online need for general purpose computers should be available for the SCC and LHC machines. 2 figs.

  11. Acceptability of an Embodied Conversational Agent-based Computer Application for Hispanic Women

    PubMed Central

    Wells, Kristen J.; Vázquez-Otero, Coralia; Bredice, Marissa; Meade, Cathy D.; Chaet, Alexis; Rivera, Maria I.; Arroyo, Gloria; Proctor, Sara K.; Barnes, Laura E.

    2015-01-01

    There are few Spanish language interactive, technology-driven health education programs. Objectives of this feasibility study were to: 1) learn more about computer and technology usage among Hispanic women living in a rural community; and 2) evaluate acceptability of the concept of using an embodied conversational agent (ECA) computer application among this population. A survey about computer usage history and interest in computers was administered to a convenience sample of 26 women. A sample video prototype of a hospital discharge ECA was administered followed by questions to gauge opinion about the ECA. Data indicate women exhibited both a high level of computer experience and enthusiasm for the ECA. Feedback from community is essential to ensure equity in state of the art dissemination of health information. Hay algunos programas interactivos en español que usan la tecnología para educar sobre la salud. Los objetivos de este estudio fueron: 1) aprender más sobre el uso de computadoras y tecnología entre mujeres Hispanas que viven en comunidades rurales y 2) evaluar la aceptabilidad del concepto de usar un programa de computadora utilizando un agente de conversación encarnado (ECA) en esta población. Se administro una encuesta sobre el historial de uso y del interés de aprender sobre computadoras fue a 26 mujeres por muestreo de conveniencia. Un ejemplo del prototipo ECA en forma de video de un alta hospitalaria fue administrado y fue seguido por preguntas sobre la opinión que tenían del ECA. Los datos indican que las mujeres mostraron un alto nivel de experiencia con las computadoras y un alto nivel de entusiasmo sobre el ECA. La retroalimentación de la comunidad es esencial para asegurar equidad en la diseminación de información sobre la salud con tecnología de punta. PMID:26671558

  12. Computational model of collective nest selection by ants with heterogeneous acceptance thresholds

    PubMed Central

    Masuda, Naoki; O'shea-Wheller, Thomas A.; Doran, Carolina; Franks, Nigel R.

    2015-01-01

    Collective decision-making is a characteristic of societies ranging from ants to humans. The ant Temnothorax albipennis is known to use quorum sensing to collectively decide on a new home; emigration to a new nest site occurs when the number of ants favouring the new site becomes quorate. There are several possible mechanisms by which ant colonies can select the best nest site among alternatives based on a quorum mechanism. In this study, we use computational models to examine the implications of heterogeneous acceptance thresholds across individual ants in collective nest choice behaviour. We take a minimalist approach to develop a differential equation model and a corresponding non-spatial agent-based model. We show, consistent with existing empirical evidence, that heterogeneity in acceptance thresholds is a viable mechanism for efficient nest choice behaviour. In particular, we show that the proposed models show speed–accuracy trade-offs and speed–cohesion trade-offs when we vary the number of scouts or the quorum threshold. PMID:26543578

  13. Computational model of collective nest selection by ants with heterogeneous acceptance thresholds.

    PubMed

    Masuda, Naoki; O'shea-Wheller, Thomas A; Doran, Carolina; Franks, Nigel R

    2015-06-01

    Collective decision-making is a characteristic of societies ranging from ants to humans. The ant Temnothorax albipennis is known to use quorum sensing to collectively decide on a new home; emigration to a new nest site occurs when the number of ants favouring the new site becomes quorate. There are several possible mechanisms by which ant colonies can select the best nest site among alternatives based on a quorum mechanism. In this study, we use computational models to examine the implications of heterogeneous acceptance thresholds across individual ants in collective nest choice behaviour. We take a minimalist approach to develop a differential equation model and a corresponding non-spatial agent-based model. We show, consistent with existing empirical evidence, that heterogeneity in acceptance thresholds is a viable mechanism for efficient nest choice behaviour. In particular, we show that the proposed models show speed-accuracy trade-offs and speed-cohesion trade-offs when we vary the number of scouts or the quorum threshold. PMID:26543578

  14. Comparing user acceptance of a computer system in two pediatric offices: a qualitative study.

    PubMed Central

    Travers, D. A.; Downs, S. M.

    2000-01-01

    The purpose of this qualitative study was to examine user acceptance of a clinical computer system in two pediatric practices in the southeast. Data were gathered through interviews with practice and IS staff, observations in the clinical area, and review of system implementation records. Five months after implementation, Practice A continued to use the system but Practice B had quit using it because it was unacceptable to the users. The results are presented here, in relation to a conceptual framework, which was originally developed to describe the process of successful implementation of research findings into practice. Five main themes were identified relative to the differences in user acceptance at the two practices: 1) Benefits versus expense of system use varied, 2) Organizational cultures differed, 3) IS staff's relationship with practices differed, 4) Post-implementation experiences differed, and 5) Transfer of technology from the academic center to private practice proved challenging in Practice B. The findings indicate a need for the development and validation of tools to measure healthcare organizational climate and readiness for change. PMID:11080005

  15. 77 FR 21277 - Customer Clearing Documentation, Timing of Acceptance for Clearing, and Clearing Member Risk...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-09

    ... (``DCO'') level.\\3\\ \\3\\ Derivatives Clearing Organization General Provisions and Core Principles, 76 FR... Clearing Documentation and Timing of Acceptance for Clearing, 76 FR 45730 (Aug. 1, 2011). \\5\\ Requirements for Processing, Clearing, and Transfer of Customer Positions, 76 FR 13101 (Mar. 10, 2011)....

  16. 12 CFR 622.21 - Computing time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... or Federal holiday, in which event the period shall run until the end of the next day which is not a Saturday, Sunday, or Federal holiday. When the period of time prescribed or allowed is 10 days or less, intermediate Saturdays, Sundays, and Federal holidays shall not be included in the computation. (b) Service...

  17. Examining Peer Acceptance in Verbal and Non-Verbal Interaction during Computer-Supported Collaborative Learning: Implications for Inclusion

    ERIC Educational Resources Information Center

    Mavrou, Katerina

    2012-01-01

    This paper discusses the results of peer acceptance in a study investigating the interactions of pairs of disabled and non-disabled pupils working together on computer-based tasks in mainstream primary schools in Cyprus. Twenty dyads of pupils were observed and videotaped while working together at the computer. Data analyses were based on the…

  18. Research on the Submission, Acceptance and Publication Times of Articles Submitted to International Otorhinolaryngology Journals

    PubMed Central

    Kalcioglu, M. Tayyar; Ileri, Yavuz; Karaca, Servet; Egilmez, Oguz Kadir; Kokten, Numan

    2015-01-01

    Objective: The aim of this study was to provide insight into the acceptance and publication times of articles submitted to international otolaryngology journals. Material and Methods: The study was carried out by examining the top 37 journal titles returned in an online search for otolaryngology journals published from 1999 to 2013 that have an international status based on their impact factor. Results: In total, 9,765 publications were examined. When journals were compared based on journal impact factor, statistically significant differences (p<0.01) were found. Comparisons of the acceptance and publication times for both original research and case reports revealed that these times have become shorter over the years. Discussion: Journals with higher impact factors likely have larger workloads in terms of articles, and consequently, their acceptance and publication times might be longer. An implication from this study finding that these periods have decreased over the years is that these processes can be expedited by more intensive use of the Internet and increases in journal capacity and number of issues published. Conclusion: The expedition of these processes over time might result from journals’ ability to use technology more intensively or from increases in journal’s capacity and number of issues published. PMID:26862250

  19. Perspective: Computer simulations of long time dynamics

    PubMed Central

    Elber, Ron

    2016-01-01

    Atomically detailed computer simulations of complex molecular events attracted the imagination of many researchers in the field as providing comprehensive information on chemical, biological, and physical processes. However, one of the greatest limitations of these simulations is of time scales. The physical time scales accessible to straightforward simulations are too short to address many interesting and important molecular events. In the last decade significant advances were made in different directions (theory, software, and hardware) that significantly expand the capabilities and accuracies of these techniques. This perspective describes and critically examines some of these advances. PMID:26874473

  20. Identifying Ghanaian Pre-Service Teachers' Readiness for Computer Use: A Technology Acceptance Model Approach

    ERIC Educational Resources Information Center

    Gyamfi, Stephen Adu

    2016-01-01

    This study extends the technology acceptance model to identify factors that influence technology acceptance among pre-service teachers in Ghana. Data from 380 usable questionnaires were tested against the research model. Utilising the extended technology acceptance model (TAM) as a research framework, the study found that: pre-service teachers'…

  1. Maintaining Privacy in Pervasive Computing - Enabling Acceptance of Sensor-based Services

    NASA Astrophysics Data System (ADS)

    Soppera, A.; Burbridge, T.

    During the 1980s, Mark Weiser [1] predicted a world in which computing was so pervasive that devices embedded in the environment could sense their relationship to us and to each other. These tiny ubiquitous devices would continually feed information from the physical world into the information world. Twenty years ago, this vision was the exclusive territory of academic computer scientists and science fiction writers. Today this subject has become of interest to business, government, and society. Governmental authorities exercise their power through the networked environment. Credit card databases maintain our credit history and decide whether we are allowed to rent a house or obtain a loan. Mobile telephones can locate us in real time so that we do not miss calls. Within another 10 years, all sorts of devices will be connected through the network. Our fridge, our food, together with our health information, may all be networked for the purpose of maintaining diet and well-being. The Internet will move from being an infrastructure to connect computers, to being an infrastructure to connect everything [2, 3].

  2. Reliable timing systems for computer controlled accelerators

    NASA Astrophysics Data System (ADS)

    Knott, Jürgen; Nettleton, Robert

    1986-06-01

    Over the past decade the use of computers has set new standards for control systems of accelerators with ever increasing complexity coupled with stringent reliability criteria. In fact, with very slow cycling machines or storage rings any erratic operation or timing pulse will cause the loss of precious particles and waste hours of time and effort of preparation. Thus, for the CERN linac and LEAR (Low Energy Antiproton Ring) timing system reliability becomes a crucial factor in the sense that all components must operate practically without fault for very long periods compared to the effective machine cycle. This has been achieved by careful selection of components and design well below thermal and electrical limits, using error detection and correction where possible, as well as developing "safe" decoding techniques for serial data trains. Further, consistent structuring had to be applied in order to obtain simple and flexible modular configurations with very few components on critical paths and to minimize the exchange of information to synchronize accelerators. In addition, this structuring allows the development of efficient strategies for on-line and off-line fault diagnostics. As a result, the timing system for Linac 2 has, so far, been operating without fault for three years, the one for LEAR more than one year since its final debugging.

  3. Spiking neuron computation with the time machine.

    PubMed

    Garg, Vaibhav; Shekhar, Ravi; Harris, John G

    2012-04-01

    The Time Machine (TM) is a spike-based computation architecture that represents synaptic weights in time. This choice of weight representation allows the use of virtual synapses, providing an excellent tradeoff in terms of flexibility, arbitrary weight connections and hardware usage compared to dedicated synapse architectures. The TM supports an arbitrary number of synapses and is limited only by the number of simultaneously active synapses to each neuron. SpikeSim, a behavioral hardware simulator for the architecture, is described along with example algorithms for edge detection and objection recognition. The TM can implement traditional spike-based processing as well as recently developed time mode operations where step functions serve as the input and output of each neuron block. A custom hybrid digital/analog implementation and a fully digital realization of the TM are discussed. An analog chip with 32 neurons, 1024 synapses and an address event representation (AER) block has been fabricated in 0.5 μm technology. A fully digital field-programmable gate array (FPGA)-based implementation of the architecture has 6,144 neurons and 100,352 simultaneously active synapses. Both implementations utilize a digital controller for routing spikes that can process up to 34 million synapses per second. PMID:23852979

  4. Cluster Computing for Embedded/Real-Time Systems

    NASA Technical Reports Server (NTRS)

    Katz, D.; Kepner, J.

    1999-01-01

    Embedded and real-time systems, like other computing systems, seek to maximize computing power for a given price, and thus can significantly benefit from the advancing capabilities of cluster computing.

  5. Computer Evaluation Of Real-Time X-Ray And Acoustic Images

    NASA Astrophysics Data System (ADS)

    Jacoby, M. H.; Loe, R. S.; Dondes, P. A.

    1983-03-01

    The weakest link in the inspection process is the subjective interpretation of data by inspectors. To overcome this troublesome fact computer based analysis systems have been developed. In the field of nondestructive evaluation (NDE) there is a large class of inspections that can benefit from computer analysis. X-ray images (both film and fluoroscopic) and acoustic images lend themselves to automatic analysis as do the one-dimensional signals associated with ultrasonic, eddy current and acoustic emission testing. Computer analysis can enhance and evaluate subtle details. Flaws can be located and measured, and accept-ance decisions made by computer in a consistent and objective manner. This paper describes the interactive, computer-based analysis of real-time x-ray images and acoustic images of graphite/epoxy adhesively bonded structures.

  6. 5 CFR 185.129 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 5 Administrative Personnel 1 2013-01-01 2013-01-01 false Computation of time. 185.129 Section 185.129 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PROGRAM FRAUD CIVIL REMEDIES § 185.129 Computation of time. (a) In computing any period of time under this part or in an order issued thereunder, the time...

  7. 45 CFR 2554.22 - How is time computed?

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 4 2010-10-01 2010-10-01 false How is time computed? 2554.22 Section 2554.22... SERVICE PROGRAM FRAUD CIVIL REMEDIES ACT REGULATIONS Hearing Provisions § 2554.22 How is time computed? (a) In computing any period of time under this part or in an order issued thereunder, the time...

  8. Gender-based Outcomes and Acceptability of a Computer-assisted Psychosocial Intervention for Substance Use Disorders

    PubMed Central

    Campbell, Aimee N. C.; Nunes, Edward V.; Pavlicova, Martina; Hatch-Maillette, Mary; Hu, Mei-Chen; Bailey, Genie L.; Sugarman, Dawn E.; Miele, Gloria M.; Rieckmann, Traci; Shores-Wilson, Kathy; Turrigiano, Eva; Greenfield, Shelly F.

    2015-01-01

    Background Digital technologies show promise for increasing treatment accessibility and improving quality of care, but little is known about gender differences. This secondary analysis uses data from a multi-site effectiveness trial of a computer-assisted behavioral intervention, conducted within NIDA's National Drug Abuse Clinical Trials Network, to explore gender differences in intervention acceptability and treatment outcomes. Methods Men (n=314) and women (n=192) were randomly assigned to 12-weeks of treatment-as-usual (TAU) or modified TAU + Therapeutic Education System (TES), whereby TES substituted for 2 hours of TAU per week. TES is comprised of 62 web-delivered, multimedia modules, covering skills for achieving and maintaining abstinence plus prize-based incentives contingent on abstinence and treatment adherence. Outcomes were: (1) abstinence from drugs and heavy drinking in the last 4 weeks of treatment, (2) retention, (3) social functioning, and (4) drug and alcohol craving. Acceptability was the mean score across five indicators (i.e., interesting, useful, novel, easy to understand, and satisfaction). Results Gender did not moderate the effect of treatment on any outcome. Women reported higher acceptability scores at week 4 (p=.02), but no gender differences were detected at weeks 8 or 12. Acceptability was positively associated with abstinence, but only among women (p=.01). Conclusions Findings suggest that men and women derive similar benefits from participating in a computer-assisted intervention, a promising outcome as technology-based treatments expand. Acceptability was associated with abstinence outcomes among women. Future research should explore characteristics of women who report less satisfaction with this modality of treatment and ways to improve overall acceptability. PMID:25613105

  9. Understanding Pre-Service Teachers' Computer Attitudes: Applying and Extending the Technology Acceptance Model

    ERIC Educational Resources Information Center

    Teo, T.; Lee, C. B.; Chai, C. S.

    2008-01-01

    Computers are increasingly widespread, influencing many aspects of our social and work lives. As we move into a technology-based society, it is important that classroom experiences with computers are made available for all students. The purpose of this study is to examine pre-service teachers' attitudes towards computers. This study extends the…

  10. Software Accelerates Computing Time for Complex Math

    NASA Technical Reports Server (NTRS)

    2014-01-01

    Ames Research Center awarded Newark, Delaware-based EM Photonics Inc. SBIR funding to utilize graphic processing unit (GPU) technology- traditionally used for computer video games-to develop high-computing software called CULA. The software gives users the ability to run complex algorithms on personal computers with greater speed. As a result of the NASA collaboration, the number of employees at the company has increased 10 percent.

  11. Explorations in Space and Time: Computer-Generated Astronomy Films

    ERIC Educational Resources Information Center

    Meeks, M. L.

    1973-01-01

    Discusses the use of the computer animation technique to travel through space and time and watch models of astronomical systems in motion. Included is a list of eight computer-generated demonstration films entitled Explorations in Space and Time.'' (CC)

  12. Staff Views of Acceptability and Appropriateness of a Computer-Delivered Brief Intervention for Moderate Drug and Alcohol Use.

    PubMed

    Mitchell, Shannon Gwin; Monico, Laura B; Gryczynski, Jan; O'Grady, Kevin E; Schwartz, Robert P

    2015-01-01

    The use of computers for identifying and intervening with stigmatized behaviors, such as drug use, offers promise for underserved, rural areas; however, the acceptability and appropriateness of using computerized brief intervention (CBIs) must be taken into consideration. In the present study, 12 staff members representing a range of clinic roles in two rural, federally qualified health centers completed semi-structured interviews in a qualitative investigation of CBI vs. counselor-delivered individual brief intervention (IBI). Thematic content analysis was conducted using a constant comparative method, examining the range of responses within each interview as well as data across interview respondents. Overall, staff found the idea of providing CBIs both acceptable and appropriate for their patient population. Acceptability by clinic staff centered on the ready availability of the CBI. Staff also believed that patients might be more forthcoming in response to a computer program than a personal interview. However, some staff voiced reservations concerning the appropriateness of CBIs for subsets of patients, including older patients, illiterate individuals, or those unfamiliar with computers. Findings support the potential suitability and potential benefits of providing CBIs to patients in rural health centers.

  13. Computer Center: It's Time to Take Inventory.

    ERIC Educational Resources Information Center

    Spain, James D.

    1984-01-01

    Describes typical instructional applications of computers. Areas considered include: (1) instructional simulations and animations; (2) data analysis; (3) drill and practice; (4) student evaluation; (5) development of computer models and simulations; (6) biometrics or biostatistics; and (7) direct data acquisition and analysis. (JN)

  14. 10 CFR 76.74 - Computation and extension of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 2 2013-01-01 2013-01-01 false Computation and extension of time. 76.74 Section 76.74 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) CERTIFICATION OF GASEOUS DIFFUSION PLANTS Certification § 76.74 Computation and extension of time. (a) In computing any period of time, the day of the...

  15. 10 CFR 76.74 - Computation and extension of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 2 2012-01-01 2012-01-01 false Computation and extension of time. 76.74 Section 76.74 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) CERTIFICATION OF GASEOUS DIFFUSION PLANTS Certification § 76.74 Computation and extension of time. (a) In computing any period of time, the day of the...

  16. 10 CFR 76.74 - Computation and extension of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 2 2011-01-01 2011-01-01 false Computation and extension of time. 76.74 Section 76.74 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) CERTIFICATION OF GASEOUS DIFFUSION PLANTS Certification § 76.74 Computation and extension of time. (a) In computing any period of time, the day of the...

  17. 10 CFR 76.74 - Computation and extension of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Computation and extension of time. 76.74 Section 76.74 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) CERTIFICATION OF GASEOUS DIFFUSION PLANTS Certification § 76.74 Computation and extension of time. (a) In computing any period of time, the day of the...

  18. 10 CFR 76.74 - Computation and extension of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 2 2014-01-01 2014-01-01 false Computation and extension of time. 76.74 Section 76.74 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) CERTIFICATION OF GASEOUS DIFFUSION PLANTS Certification § 76.74 Computation and extension of time. (a) In computing any period of time, the day of the...

  19. 5 CFR 185.129 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 5 Administrative Personnel 1 2012-01-01 2012-01-01 false Computation of time. 185.129 Section 185.129 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PROGRAM FRAUD CIVIL REMEDIES § 185.129 Computation of time. (a) In computing any period of time under this part or...

  20. 6 CFR 13.27 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 6 Domestic Security 1 2011-01-01 2011-01-01 false Computation of time. 13.27 Section 13.27 Domestic Security DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY PROGRAM FRAUD CIVIL REMEDIES § 13.27 Computation of time. (a) In computing any period of time under this part or in an order...

  1. 6 CFR 13.27 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 6 Domestic Security 1 2012-01-01 2012-01-01 false Computation of time. 13.27 Section 13.27 Domestic Security DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY PROGRAM FRAUD CIVIL REMEDIES § 13.27 Computation of time. (a) In computing any period of time under this part or in an order...

  2. 24 CFR 3282.9 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... DEVELOPMENT MANUFACTURED HOME PROCEDURAL AND ENFORCEMENT REGULATIONS General § 3282.9 Computation of time. (a) In computing any period of time prescribed by the regulations in this part, refer to § 26.16(a) of... 24 Housing and Urban Development 5 2012-04-01 2012-04-01 false Computation of time. 3282.9...

  3. 24 CFR 3282.9 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... DEVELOPMENT MANUFACTURED HOME PROCEDURAL AND ENFORCEMENT REGULATIONS General § 3282.9 Computation of time. (a) In computing any period of time prescribed by the regulations in this part, refer to § 26.16(a) of... 24 Housing and Urban Development 5 2011-04-01 2011-04-01 false Computation of time. 3282.9...

  4. 5 CFR 185.129 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Computation of time. 185.129 Section 185.129 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PROGRAM FRAUD CIVIL REMEDIES § 185.129 Computation of time. (a) In computing any period of time under this part or...

  5. 41 CFR 60-30.3 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 41 Public Contracts and Property Management 1 2012-07-01 2009-07-01 true Computation of time. 60-30.3 Section 60-30.3 Public Contracts and Property Management Other Provisions Relating to Public... ORDER 11246 General Provisions § 60-30.3 Computation of time. In computing any period of time...

  6. 41 CFR 60-30.3 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 41 Public Contracts and Property Management 1 2011-07-01 2009-07-01 true Computation of time. 60-30.3 Section 60-30.3 Public Contracts and Property Management Other Provisions Relating to Public... ORDER 11246 General Provisions § 60-30.3 Computation of time. In computing any period of time...

  7. 5 CFR 410.310 - Computing time in training.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 5 Administrative Personnel 1 2011-01-01 2011-01-01 false Computing time in training. 410.310... Establishing and Implementing Training Programs § 410.310 Computing time in training. For the purpose of computing time in training for continued service agreements under section 4108 of title 5, United...

  8. 50 CFR 221.3 - How are time periods computed?

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false How are time periods computed? 221.3 Section 221.3 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC... Provisions § 221.3 How are time periods computed? (a) General. Time periods are computed as follows: (1)...

  9. 14 CFR 302.507 - Computing time for filing complaints.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Computing time for filing complaints. 302... Proceedings With Respect to Rates, Fares and Charges for Foreign Air Transportation § 302.507 Computing time for filing complaints. In computing the time for filing formal complaints pursuant to § 302.506,...

  10. 5 CFR 410.310 - Computing time in training.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Computing time in training. 410.310... Establishing and Implementing Training Programs § 410.310 Computing time in training. For the purpose of computing time in training for continued service agreements under section 4108 of title 5, United...

  11. 43 CFR 45.3 - How are time periods computed?

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false How are time periods computed? 45.3... IN FERC HYDROPOWER LICENSES General Provisions § 45.3 How are time periods computed? (a) General. Time periods are computed as follows: (1) The day of the act or event from which the period begins...

  12. Quantitative Prediction of Computational Quality (so the S and C Folks will Accept it)

    NASA Technical Reports Server (NTRS)

    Hemsch, Michael J.; Luckring, James M.; Morrison, Joseph H.

    2004-01-01

    Our choice of title may seem strange but we mean each word. In this talk, we are not going to be concerned with computations made "after the fact", i.e. those for which data are available and which are being conducted for explanation and insight. Here we are interested in preventing S&C design problems by finding them through computation before data are available. For such a computation to have any credibility with those who absorb the risk, it is necessary to quantitatively PREDICT the quality of the computational results.

  13. A Quantitative Study of Factors Affecting Learner Acceptance of a Computer-Based Training Support Tool

    ERIC Educational Resources Information Center

    Wagner, G. Dale; Flannery, Daniele D.

    2004-01-01

    This study identifies and empirically tests factors that may influence learners' use of a computer-based training support system (TSS). The areas of research and theory were drawn from human-computer interaction, information and business management, and adult education. The factors suggested in the literature that may affect learner's use of a TSS…

  14. 14 CFR 1264.126 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 5 2011-01-01 2010-01-01 true Computation of time. 1264.126 Section 1264.126 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL PENALTIES ACT OF 1986 § 1264.126 Computation of time. (a) In computing any period of...

  15. 10 CFR 205.5 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 3 2010-01-01 2010-01-01 false Computation of time. 205.5 Section 205.5 Energy DEPARTMENT OF ENERGY OIL ADMINISTRATIVE PROCEDURES AND SANCTIONS General Provisions § 205.5 Computation of time. (a) Days. (1) Except as provided in paragraph (b) of this section, in computing any period of...

  16. 14 CFR 1264.126 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Computation of time. 1264.126 Section 1264.126 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL PENALTIES ACT OF 1986 § 1264.126 Computation of time. (a) In computing any period of...

  17. 14 CFR 1264.126 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 5 2012-01-01 2012-01-01 false Computation of time. 1264.126 Section 1264.126 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL PENALTIES ACT OF 1986 § 1264.126 Computation of time. (a) In computing any period of...

  18. 28 CFR 32.2 - Computation of time; filing.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... EDUCATIONAL ASSISTANCE BENEFIT CLAIMS General Provisions § 32.2 Computation of time; filing. (a) In computing... designated period of time begins to run shall not be included. The last day of the period so computed shall... Office to be closed or inaccessible, in which event the period runs until the end of the next day that...

  19. 21 CFR 810.3 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Computation of time. 810.3 Section 810.3 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES MEDICAL DEVICE RECALL AUTHORITY General Provisions § 810.3 Computation of time. In computing any period...

  20. 21 CFR 810.3 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Computation of time. 810.3 Section 810.3 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES MEDICAL DEVICE RECALL AUTHORITY General Provisions § 810.3 Computation of time. In computing any period...

  1. 21 CFR 810.3 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Computation of time. 810.3 Section 810.3 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES MEDICAL DEVICE RECALL AUTHORITY General Provisions § 810.3 Computation of time. In computing any period...

  2. 21 CFR 810.3 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Computation of time. 810.3 Section 810.3 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES MEDICAL DEVICE RECALL AUTHORITY General Provisions § 810.3 Computation of time. In computing any period...

  3. 45 CFR 681.24 - How is time computed?

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 45 Public Welfare 3 2014-10-01 2014-10-01 false How is time computed? 681.24 Section 681.24 Public... REMEDIES ACT REGULATIONS Hearing Procedures § 681.24 How is time computed? (a) In computing any period of..., event, or default, and includes the last day of the period, unless it is a Saturday, Sunday, or...

  4. 45 CFR 681.24 - How is time computed?

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 3 2011-10-01 2011-10-01 false How is time computed? 681.24 Section 681.24 Public... REMEDIES ACT REGULATIONS Hearing Procedures § 681.24 How is time computed? (a) In computing any period of..., event, or default, and includes the last day of the period, unless it is a Saturday, Sunday, or...

  5. 45 CFR 681.24 - How is time computed?

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 45 Public Welfare 3 2013-10-01 2013-10-01 false How is time computed? 681.24 Section 681.24 Public... REMEDIES ACT REGULATIONS Hearing Procedures § 681.24 How is time computed? (a) In computing any period of..., event, or default, and includes the last day of the period, unless it is a Saturday, Sunday, or...

  6. 45 CFR 681.24 - How is time computed?

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 3 2010-10-01 2010-10-01 false How is time computed? 681.24 Section 681.24 Public Welfare Regulations Relating to Public Welfare (Continued) NATIONAL SCIENCE FOUNDATION PROGRAM FRAUD CIVIL REMEDIES ACT REGULATIONS Hearing Procedures § 681.24 How is time computed? (a) In computing any period...

  7. 10 CFR 110.90 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Computation of time. 110.90 Section 110.90 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) EXPORT AND IMPORT OF NUCLEAR EQUIPMENT AND MATERIAL Public Participation Procedures Concerning License Applications § 110.90 Computation of time. (a) In computing any period of...

  8. 14 CFR 13.44 - Computation of time and extension of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 1 2011-01-01 2011-01-01 false Computation of time and extension of time. 13.44 Section 13.44 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF....44 Computation of time and extension of time. (a) In computing any period of time prescribed...

  9. 14 CFR 13.44 - Computation of time and extension of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Computation of time and extension of time. 13.44 Section 13.44 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF....44 Computation of time and extension of time. (a) In computing any period of time prescribed...

  10. The Adoption of Grid Computing Technology by Organizations: A Quantitative Study Using Technology Acceptance Model

    ERIC Educational Resources Information Center

    Udoh, Emmanuel E.

    2010-01-01

    Advances in grid technology have enabled some organizations to harness enormous computational power on demand. However, the prediction of widespread adoption of the grid technology has not materialized despite the obvious grid advantages. This situation has encouraged intense efforts to close the research gap in the grid adoption process. In this…

  11. Evaluating the Acceptance of Cloud-Based Productivity Computer Solutions in Small and Medium Enterprises

    ERIC Educational Resources Information Center

    Dominguez, Alfredo

    2013-01-01

    Cloud computing has emerged as a new paradigm for on-demand delivery and consumption of shared IT resources over the Internet. Research has predicted that small and medium organizations (SMEs) would be among the earliest adopters of cloud solutions; however, this projection has not materialized. This study set out to investigate if behavior…

  12. 7 CFR 1.603 - How are time periods computed?

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 1 2012-01-01 2012-01-01 false How are time periods computed? 1.603 Section 1.603 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Conditions in FERC Hydropower Licenses General Provisions § 1.603 How are time periods computed? (a) General. Time periods are...

  13. 7 CFR 1.603 - How are time periods computed?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 1 2014-01-01 2014-01-01 false How are time periods computed? 1.603 Section 1.603 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Conditions in FERC Hydropower Licenses General Provisions § 1.603 How are time periods computed? (a) General. Time periods are...

  14. 7 CFR 1.603 - How are time periods computed?

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 1 2013-01-01 2013-01-01 false How are time periods computed? 1.603 Section 1.603 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Conditions in FERC Hydropower Licenses General Provisions § 1.603 How are time periods computed? (a) General. Time periods are...

  15. 7 CFR 1.603 - How are time periods computed?

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 1 2011-01-01 2011-01-01 false How are time periods computed? 1.603 Section 1.603 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Conditions in FERC Hydropower Licenses General Provisions § 1.603 How are time periods computed? (a) General. Time periods are...

  16. 7 CFR 1.603 - How are time periods computed?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 1 2010-01-01 2010-01-01 false How are time periods computed? 1.603 Section 1.603 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Conditions in FERC Hydropower Licenses General Provisions § 1.603 How are time periods computed? (a) General. Time periods are...

  17. 39 CFR 952.31 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false Computation of time. 952.31 Section 952.31 Postal Service UNITED STATES POSTAL SERVICE PROCEDURES RULES OF PRACTICE IN PROCEEDINGS RELATIVE TO FALSE REPRESENTATION AND LOTTERY ORDERS § 952.31 Computation of time. A designated period of time under these...

  18. Evolution of the International Atomic Time TAI computation

    NASA Technical Reports Server (NTRS)

    Granveaud, M.

    1979-01-01

    The computation of the International Atomic Time (TAI), a worldwide time reference, is briefly examined. The types of atomic clocks, computation procedures, and time intercomparison between clocks utilizing navigation satellites are addressed. Changes in the system would essentially depend on the improvement of the atomic clocks.

  19. 29 CFR 18.4 - Time computations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... other than complaints is deemed effected at the time of mailing. (3) Whenever a party has the right or... mail, five (5) days shall be added to the prescribed period. (d) Filing or service by facsimile. Filing... facsimile machine. For purposes of filings by facsimile the time printed on the transmission by...

  20. Real-Time, Sensor-Based Computing in the Laboratory.

    ERIC Educational Resources Information Center

    Badmus, O. O.; And Others

    1996-01-01

    Demonstrates the importance of Real-Time, Sensor-Based (RTSB) computing and how it can be easily and effectively integrated into university student laboratories. Describes the experimental processes, the process instrumentation and process-computer interface, the computer and communications systems, and typical software. Provides much technical…

  1. Accessing Computers in Education, One Byte at a Time.

    ERIC Educational Resources Information Center

    Manzo, Anthony V.

    This paper discusses computers and their potential role in education. The term "byte" is first explained, to emphasize the idea that the use of computers should be implemented one "byte" or step at a time. The reasons for this approach are then outlined. Potential applications in computer usage in educational administration are suggested, computer…

  2. Really computing nonperturbative real time correlation functions

    NASA Astrophysics Data System (ADS)

    Bödeker, Dietrich; McLerran, Larry; Smilga, Andrei

    1995-10-01

    It has been argued by Grigoriev and Rubakov that one can simulate real time processes involving baryon number nonconservation at high temperature using real time evolution of classical equations, and summing over initial conditions with a classical thermal weight. It is known that such a naive algorithm is plagued by ultraviolet divergences. In quantum theory the divergences are regularized, but the corresponding graphs involve the contributions from the hard momentum region and also the new scale ~gT comes into play. We propose a modified algorithm which involves solving the classical equations of motion for the effective hard thermal loop Hamiltonian with an ultraviolet cutoff μ>>gT and integrating over initial conditions with a proper thermal weight. Such an algorithm should provide a determination of the infrared behavior of the real time correlation function T determining the baryon violation rate. Hopefully, the results obtained in this modified algorithm will be cutoff independent.

  3. Influence of computer work under time pressure on cardiac activity.

    PubMed

    Shi, Ping; Hu, Sijung; Yu, Hongliu

    2015-03-01

    Computer users are often under stress when required to complete computer work within a required time. Work stress has repeatedly been associated with an increased risk for cardiovascular disease. The present study examined the effects of time pressure workload during computer tasks on cardiac activity in 20 healthy subjects. Heart rate, time domain and frequency domain indices of heart rate variability (HRV) and Poincaré plot parameters were compared among five computer tasks and two rest periods. Faster heart rate and decreased standard deviation of R-R interval were noted in response to computer tasks under time pressure. The Poincaré plot parameters showed significant differences between different levels of time pressure workload during computer tasks, and between computer tasks and the rest periods. In contrast, no significant differences were identified for the frequency domain indices of HRV. The results suggest that the quantitative Poincaré plot analysis used in this study was able to reveal the intrinsic nonlinear nature of the autonomically regulated cardiac rhythm. Specifically, heightened vagal tone occurred during the relaxation computer tasks without time pressure. In contrast, the stressful computer tasks with added time pressure stimulated cardiac sympathetic activity.

  4. Long time behavior of unsteady flow computations

    NASA Technical Reports Server (NTRS)

    Hariharan, S. I.

    1992-01-01

    This paper addresses a specific issue of time accuracy in the calculation of external aerodynamic problems. The class of problems discussed consists of inviscid compressible subsonic flows. These problems are governed by a convective equation. A key issue that is not understood is the long time behavior of the solution. This is important if one desires transient calculations of problems governed by the Euler equations or its derivatives such as the small disturbance equations or the potential formulations for the gust problem. Difficulties arise for two dimensional problems where the time rate decay solutions of the wave equation is slow. In concert with the above mentioned problem, exterior flows require proper modeling of the boundary conditions. In particular, this requires the truncation of infinite regions into finite regions with the aid of artificial boundaries. These boundary conditions must be consistent with the physics of the unbounded problem as well as consistent in time and space. Our treatment of the problem is discussed in detail and examples are given to verify the results.

  5. Real time mass flow computer for Arc Jet Wind Tunnel

    NASA Technical Reports Server (NTRS)

    Vidal, J.

    1978-01-01

    Experiments at the Arc Jet Tunnel at Ames Research Center have typical run times of 5-10 sec during which the test model is subjected to an environment simulating reentry into Jupiter. Previous real-time determination of mass flow required off-line manual computations from taped or strip chart data. The present paper describes a computer which provides personnel with real-time computations of mass flow. Using an 8-bit microprocessor and standard TTL interface circuitry, the unit interrogates temperature and pressure instruments with other parameters to compute mass flow.

  6. A Simple Computer Interface To Time Relatively Slow Physical Events.

    ERIC Educational Resources Information Center

    Ocaya, R. O.

    2000-01-01

    Describes a simple computer interface that can be used to make reliable time measurements, such as when timing the swings of a pendulum. Presents a sample experiment involving a form of pendulum known as the compound pendulum. (Author/YDS)

  7. 14 CFR 302.8 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false Computation of time. 302.8 Section 302.8 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) PROCEDURAL REGULATIONS RULES OF PRACTICE IN PROCEEDINGS Rules of General Applicability § 302.8 Computation of time....

  8. 14 CFR 13.212 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Computation of time. 13.212 Section 13.212 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES INVESTIGATIVE AND ENFORCEMENT PROCEDURES Rules of Practice in FAA Civil Penalty Actions § 13.212 Computation of time. (a) This section applies to...

  9. 14 CFR 406.119 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false Computation of time. 406.119 Section 406.119 Aeronautics and Space COMMERCIAL SPACE TRANSPORTATION, FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... in FAA Space Transportation Adjudications § 406.119 Computation of time. (a) This section applies...

  10. 14 CFR 302.8 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Computation of time. 302.8 Section 302.8 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) PROCEDURAL REGULATIONS RULES OF PRACTICE IN PROCEEDINGS Rules of General Applicability § 302.8 Computation of time....

  11. 14 CFR 16.17 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 1 2011-01-01 2011-01-01 false Computation of time. 16.17 Section 16.17 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES RULES OF..., Proceedings Initiated by the FAA, and Appeals § 16.17 Computation of time. This section applies to any...

  12. 14 CFR 17.7 - Filing and computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Filing and computation of time. 17.7 Section 17.7 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES PROCEDURES FOR PROTESTS AND CONTRACTS DISPUTES General § 17.7 Filing and computation of time. (a) Filing of a protest or contract dispute...

  13. 14 CFR 406.119 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Computation of time. 406.119 Section 406.119 Aeronautics and Space COMMERCIAL SPACE TRANSPORTATION, FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... in FAA Space Transportation Adjudications § 406.119 Computation of time. (a) This section applies...

  14. 7 CFR 614.14 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Computation of time. 614.14 Section 614.14 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS NRCS APPEAL PROCEDURES § 614.14 Computation of time. (a) The word...

  15. 28 CFR 5.4 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 1 2013-07-01 2013-07-01 false Computation of time. 5.4 Section 5.4 Judicial Administration DEPARTMENT OF JUSTICE ADMINISTRATION AND ENFORCEMENT OF FOREIGN AGENTS REGISTRATION ACT OF 1938, AS AMENDED § 5.4 Computation of time. Sundays and holidays shall be counted in...

  16. 14 CFR 16.17 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Computation of time. 16.17 Section 16.17 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES RULES OF..., Proceedings Initiated by the FAA, and Appeals § 16.17 Computation of time. This section applies to any...

  17. 32 CFR 1602.9 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 6 2014-07-01 2014-07-01 false Computation of time. 1602.9 Section 1602.9 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM DEFINITIONS § 1602.9 Computation of time. Unless otherwise specified the period of days allowed a registrant or...

  18. 32 CFR 1602.9 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 6 2011-07-01 2011-07-01 false Computation of time. 1602.9 Section 1602.9 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM DEFINITIONS § 1602.9 Computation of time. Unless otherwise specified the period of days allowed a registrant or...

  19. 32 CFR 1602.9 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 6 2012-07-01 2012-07-01 false Computation of time. 1602.9 Section 1602.9 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM DEFINITIONS § 1602.9 Computation of time. Unless otherwise specified the period of days allowed a registrant or...

  20. 32 CFR 1602.9 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Computation of time. 1602.9 Section 1602.9 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM DEFINITIONS § 1602.9 Computation of time. Unless otherwise specified the period of days allowed a registrant or...

  1. 32 CFR 1602.9 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 6 2013-07-01 2013-07-01 false Computation of time. 1602.9 Section 1602.9 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM DEFINITIONS § 1602.9 Computation of time. Unless otherwise specified the period of days allowed a registrant or...

  2. 39 CFR 963.6 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false Computation of time. 963.6 Section 963.6 Postal Service UNITED STATES POSTAL SERVICE PROCEDURES RULES OF PRACTICE IN PROCEEDINGS RELATIVE TO VIOLATIONS OF THE PANDERING ADVERTISEMENTS STATUTE, 39 U.S.C. 3008 § 963.6 Computation of time. A designated...

  3. 43 CFR 45.3 - How are time periods computed?

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 43 Public Lands: Interior 1 2013-10-01 2013-10-01 false How are time periods computed? 45.3 Section 45.3 Public Lands: Interior Office of the Secretary of the Interior CONDITIONS AND PRESCRIPTIONS IN FERC HYDROPOWER LICENSES General Provisions § 45.3 How are time periods computed? (a)...

  4. 43 CFR 45.3 - How are time periods computed?

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 43 Public Lands: Interior 1 2012-10-01 2011-10-01 true How are time periods computed? 45.3 Section 45.3 Public Lands: Interior Office of the Secretary of the Interior CONDITIONS AND PRESCRIPTIONS IN FERC HYDROPOWER LICENSES General Provisions § 45.3 How are time periods computed? (a) General....

  5. 43 CFR 45.3 - How are time periods computed?

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 1 2014-10-01 2014-10-01 false How are time periods computed? 45.3 Section 45.3 Public Lands: Interior Office of the Secretary of the Interior CONDITIONS AND PRESCRIPTIONS IN FERC HYDROPOWER LICENSES General Provisions § 45.3 How are time periods computed? (a)...

  6. 43 CFR 45.3 - How are time periods computed?

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 1 2011-10-01 2011-10-01 false How are time periods computed? 45.3 Section 45.3 Public Lands: Interior Office of the Secretary of the Interior CONDITIONS AND PRESCRIPTIONS IN FERC HYDROPOWER LICENSES General Provisions § 45.3 How are time periods computed? (a)...

  7. 5 CFR 838.131 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.131 Computation of time. (a) The rules applicable for computation of time under... proper addresses for submitting court orders affecting CSRS and FERS benefits. (2) A former spouse...

  8. 5 CFR 838.131 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.131 Computation of time. (a) The rules applicable for computation of time under... proper addresses for submitting court orders affecting CSRS and FERS benefits. (2) A former spouse...

  9. 5 CFR 838.131 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.131 Computation of time. (a) The rules applicable for computation of time under... proper addresses for submitting court orders affecting CSRS and FERS benefits. (2) A former spouse...

  10. 5 CFR 838.131 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.131 Computation of time. (a) The rules applicable for computation of time under... proper addresses for submitting court orders affecting CSRS and FERS benefits. (2) A former spouse...

  11. 5 CFR 838.131 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.131 Computation of time. (a) The rules applicable for computation of time under... proper addresses for submitting court orders affecting CSRS and FERS benefits. (2) A former spouse...

  12. 15 CFR 930.124 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 15 Commerce and Foreign Trade 3 2011-01-01 2011-01-01 false Computation of time. 930.124 Section... MANAGEMENT FEDERAL CONSISTENCY WITH APPROVED COASTAL MANAGEMENT PROGRAMS Appeal to the Secretary for Review Related to the Objectives of the Act and National Security Interests § 930.124 Computation of time....

  13. 7 CFR 1.326 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 1 2011-01-01 2011-01-01 false Computation of time. 1.326 Section 1.326 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Procedures Related to Administrative Hearings Under the Program Fraud Civil Remedies Act of 1986 § 1.326 Computation of time. (a) In...

  14. 7 CFR 1.326 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 1 2014-01-01 2014-01-01 false Computation of time. 1.326 Section 1.326 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Procedures Related to Administrative Hearings Under the Program Fraud Civil Remedies Act of 1986 § 1.326 Computation of time. (a) In...

  15. 7 CFR 1.326 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 1 2013-01-01 2013-01-01 false Computation of time. 1.326 Section 1.326 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Procedures Related to Administrative Hearings Under the Program Fraud Civil Remedies Act of 1986 § 1.326 Computation of time. (a) In...

  16. 7 CFR 1.326 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 1 2010-01-01 2010-01-01 false Computation of time. 1.326 Section 1.326 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Procedures Related to Administrative Hearings Under the Program Fraud Civil Remedies Act of 1986 § 1.326 Computation of time. (a) In...

  17. 7 CFR 1.326 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 1 2012-01-01 2012-01-01 false Computation of time. 1.326 Section 1.326 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Procedures Related to Administrative Hearings Under the Program Fraud Civil Remedies Act of 1986 § 1.326 Computation of time. (a) In...

  18. 45 CFR 2554.22 - How is time computed?

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 45 Public Welfare 4 2014-10-01 2014-10-01 false How is time computed? 2554.22 Section 2554.22... SERVICE PROGRAM FRAUD CIVIL REMEDIES ACT REGULATIONS Hearing Provisions § 2554.22 How is time computed? (a... is a Saturday, Sunday, or legal holiday observed by the Federal government, in which event...

  19. 45 CFR 2554.22 - How is time computed?

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 4 2011-10-01 2011-10-01 false How is time computed? 2554.22 Section 2554.22... SERVICE PROGRAM FRAUD CIVIL REMEDIES ACT REGULATIONS Hearing Provisions § 2554.22 How is time computed? (a... is a Saturday, Sunday, or legal holiday observed by the Federal government, in which event...

  20. 45 CFR 2554.22 - How is time computed?

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 45 Public Welfare 4 2013-10-01 2013-10-01 false How is time computed? 2554.22 Section 2554.22... SERVICE PROGRAM FRAUD CIVIL REMEDIES ACT REGULATIONS Hearing Provisions § 2554.22 How is time computed? (a... is a Saturday, Sunday, or legal holiday observed by the Federal government, in which event...

  1. 42 CFR 93.509 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... EFFECTS STUDIES OF HAZARDOUS SUBSTANCES RELEASES AND FACILITIES PUBLIC HEALTH SERVICE POLICIES ON RESEARCH MISCONDUCT Opportunity To Contest ORI Findings of Research Misconduct and HHS Administrative Actions Hearing Process § 93.509 Computation of time. (a) In computing any period of time under this part for filing...

  2. 12 CFR 308.526 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Computation of time. 308.526 Section 308.526 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE RULES OF PRACTICE AND PROCEDURE Program Fraud Civil Remedies and Procedures § 308.526 Computation of time. (a)...

  3. 12 CFR 308.526 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 5 2013-01-01 2013-01-01 false Computation of time. 308.526 Section 308.526 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE RULES OF PRACTICE AND PROCEDURE Program Fraud Civil Remedies and Procedures § 308.526 Computation of time. (a)...

  4. 12 CFR 308.526 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 5 2014-01-01 2014-01-01 false Computation of time. 308.526 Section 308.526 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE RULES OF PRACTICE AND PROCEDURE Program Fraud Civil Remedies and Procedures § 308.526 Computation of time. (a)...

  5. 12 CFR 308.526 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 5 2012-01-01 2012-01-01 false Computation of time. 308.526 Section 308.526 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE RULES OF PRACTICE AND PROCEDURE Program Fraud Civil Remedies and Procedures § 308.526 Computation of time. (a)...

  6. 12 CFR 308.526 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 4 2011-01-01 2011-01-01 false Computation of time. 308.526 Section 308.526 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION PROCEDURE AND RULES OF PRACTICE RULES OF PRACTICE AND PROCEDURE Program Fraud Civil Remedies and Procedures § 308.526 Computation of time. (a)...

  7. Usability and Acceptability of ASSESS MS: Assessment of Motor Dysfunction in Multiple Sclerosis Using Depth-Sensing Computer Vision

    PubMed Central

    Dorn, Jonas F; Burggraaff, Jessica; Kamm, Christian Philipp; Steinheimer, Saskia Marie; Kontschieder, Peter; Criminisi, Antonio; Uitdehaag, Bernard; Dahlke, Frank; Kappos, Ludwig; Sellen, Abigail

    2015-01-01

    Background Sensor-based recordings of human movements are becoming increasingly important for the assessment of motor symptoms in neurological disorders beyond rehabilitative purposes. ASSESS MS is a movement recording and analysis system being developed to automate the classification of motor dysfunction in patients with multiple sclerosis (MS) using depth-sensing computer vision. It aims to provide a more consistent and finer-grained measurement of motor dysfunction than currently possible. Objective To test the usability and acceptability of ASSESS MS with health professionals and patients with MS. Methods A prospective, mixed-methods study was carried out at 3 centers. After a 1-hour training session, a convenience sample of 12 health professionals (6 neurologists and 6 nurses) used ASSESS MS to capture recordings of standardized movements performed by 51 volunteer patients. Metrics for effectiveness, efficiency, and acceptability were defined and used to analyze data captured by ASSESS MS, video recordings of each examination, feedback questionnaires, and follow-up interviews. Results All health professionals were able to complete recordings using ASSESS MS, achieving high levels of standardization on 3 of 4 metrics (movement performance, lateral positioning, and clear camera view but not distance positioning). Results were unaffected by patients’ level of physical or cognitive disability. ASSESS MS was perceived as easy to use by both patients and health professionals with high scores on the Likert-scale questions and positive interview commentary. ASSESS MS was highly acceptable to patients on all dimensions considered, including attitudes to future use, interaction (with health professionals), and overall perceptions of ASSESS MS. Health professionals also accepted ASSESS MS, but with greater ambivalence arising from the need to alter patient interaction styles. There was little variation in results across participating centers, and no differences between

  8. "They like Me, They like Me Not": Popularity and Adolescents' Perceptions of Acceptance Predicting Social Functioning Over Time

    ERIC Educational Resources Information Center

    McElhaney, Kathleen B.; Antonishak, Jill; Allen, Joseph P.

    2008-01-01

    This study examined the dual roles of adolescents' perceptions of social acceptance and sociometric popularity in predicting relative changes over time in adolescents' social functioning. Observational, self-report, and peer report data were obtained from 164 adolescents who were interviewed at age 13 years and then again at age 14 years, as well…

  9. Time-Domain Computation Of Electromagnetic Fields In MMICs

    NASA Technical Reports Server (NTRS)

    Lansing, Faiza S.; Rascoe, Daniel L.

    1995-01-01

    Maxwell's equations solved on three-dimensional, conformed orthogonal grids by finite-difference techniques. Method of computing frequency-dependent electrical parameters of monolithic microwave integrated circuit (MMIC) involves time-domain computation of propagation of electromagnetic field in response to excitation by single pulse at input terminal, followed by computation of Fourier transforms to obtain frequency-domain response from time-domain response. Parameters computed include electric and magnetic fields, voltages, currents, impedances, scattering parameters, and effective dielectric constants. Powerful and efficient means for analyzing performance of even complicated MMIC.

  10. 14 CFR 13.44 - Computation of time and extension of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Computation of time and extension of time. 13.44 Section 13.44 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES INVESTIGATIVE AND ENFORCEMENT PROCEDURES Rules of Practice for FAA Hearings § 13.44 Computation of time and extension of time....

  11. A tool for modeling concurrent real-time computation

    NASA Technical Reports Server (NTRS)

    Sharma, D. D.; Huang, Shie-Rei; Bhatt, Rahul; Sridharan, N. S.

    1990-01-01

    Real-time computation is a significant area of research in general, and in AI in particular. The complexity of practical real-time problems demands use of knowledge-based problem solving techniques while satisfying real-time performance constraints. Since the demands of a complex real-time problem cannot be predicted (owing to the dynamic nature of the environment) powerful dynamic resource control techniques are needed to monitor and control the performance. A real-time computation model for a real-time tool, an implementation of the QP-Net simulator on a Symbolics machine, and an implementation on a Butterfly multiprocessor machine are briefly described.

  12. 14 CFR 302.507 - Computing time for filing complaints.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false Computing time for filing complaints. 302.507 Section 302.507 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION... Proceedings With Respect to Rates, Fares and Charges for Foreign Air Transportation § 302.507 Computing...

  13. 14 CFR 17.7 - Filing and computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 1 2011-01-01 2011-01-01 false Filing and computation of time. 17.7 Section 17.7 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES PROCEDURES FOR PROTESTS AND CONTRACTS DISPUTES General § 17.7 Filing and computation of...

  14. 38 CFR 42.27 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) STANDARDS IMPLEMENTING THE PROGRAM FRAUD CIVIL REMEDIES ACT § 42.27 Computation of time. (a) In computing... following the act, event, or default, and includes the last day of the period, unless it is a Saturday, Sunday, or legal holiday observed by the Federal government, in which event it includes the next...

  15. 40 CFR 222.13 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... period so computed is to be included unless it is a Saturday, Sunday, or a legal holiday in which the... next day which is not a Saturday, Sunday, or legal holiday. Intermediate Saturdays, Sundays and legal holidays shall be excluded from the computation when the period of time prescribed or allowed is seven...

  16. 40 CFR 222.13 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... period so computed is to be included unless it is a Saturday, Sunday, or a legal holiday in which the... next day which is not a Saturday, Sunday, or legal holiday. Intermediate Saturdays, Sundays and legal holidays shall be excluded from the computation when the period of time prescribed or allowed is seven...

  17. 40 CFR 222.13 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... period so computed is to be included unless it is a Saturday, Sunday, or a legal holiday in which the... next day which is not a Saturday, Sunday, or legal holiday. Intermediate Saturdays, Sundays and legal holidays shall be excluded from the computation when the period of time prescribed or allowed is seven...

  18. 41 CFR 105-70.027 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 41 Public Contracts and Property Management 3 2014-01-01 2014-01-01 false Computation of time. 105-70.027 Section 105-70.027 Public Contracts and Property Management Federal Property Management... Administration 70-IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL REMEDIES ACT OF 1986 § 105-70.027 Computation of...

  19. 41 CFR 105-70.027 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 41 Public Contracts and Property Management 3 2012-01-01 2012-01-01 false Computation of time. 105-70.027 Section 105-70.027 Public Contracts and Property Management Federal Property Management... Administration 70-IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL REMEDIES ACT OF 1986 § 105-70.027 Computation of...

  20. 10 CFR 590.105 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 4 2013-01-01 2013-01-01 false Computation of time. 590.105 Section 590.105 Energy DEPARTMENT OF ENERGY (CONTINUED) NATURAL GAS (ECONOMIC REGULATORY ADMINISTRATION) ADMINISTRATIVE PROCEDURES WITH RESPECT TO THE IMPORT AND EXPORT OF NATURAL GAS General Provisions § 590.105 Computation of...

  1. 10 CFR 590.105 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Computation of time. 590.105 Section 590.105 Energy DEPARTMENT OF ENERGY (CONTINUED) NATURAL GAS (ECONOMIC REGULATORY ADMINISTRATION) ADMINISTRATIVE PROCEDURES WITH RESPECT TO THE IMPORT AND EXPORT OF NATURAL GAS General Provisions § 590.105 Computation of...

  2. 10 CFR 590.105 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 4 2011-01-01 2011-01-01 false Computation of time. 590.105 Section 590.105 Energy DEPARTMENT OF ENERGY (CONTINUED) NATURAL GAS (ECONOMIC REGULATORY ADMINISTRATION) ADMINISTRATIVE PROCEDURES WITH RESPECT TO THE IMPORT AND EXPORT OF NATURAL GAS General Provisions § 590.105 Computation of...

  3. 10 CFR 590.105 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 4 2014-01-01 2014-01-01 false Computation of time. 590.105 Section 590.105 Energy DEPARTMENT OF ENERGY (CONTINUED) NATURAL GAS (ECONOMIC REGULATORY ADMINISTRATION) ADMINISTRATIVE PROCEDURES WITH RESPECT TO THE IMPORT AND EXPORT OF NATURAL GAS General Provisions § 590.105 Computation of...

  4. 10 CFR 590.105 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 4 2012-01-01 2012-01-01 false Computation of time. 590.105 Section 590.105 Energy DEPARTMENT OF ENERGY (CONTINUED) NATURAL GAS (ECONOMIC REGULATORY ADMINISTRATION) ADMINISTRATIVE PROCEDURES WITH RESPECT TO THE IMPORT AND EXPORT OF NATURAL GAS General Provisions § 590.105 Computation of...

  5. Universal quantum computation using the discrete-time quantum walk

    SciTech Connect

    Lovett, Neil B.; Cooper, Sally; Everitt, Matthew; Trevers, Matthew; Kendon, Viv

    2010-04-15

    A proof that continuous-time quantum walks are universal for quantum computation, using unweighted graphs of low degree, has recently been presented by A. M. Childs [Phys. Rev. Lett. 102, 180501 (2009)]. We present a version based instead on the discrete-time quantum walk. We show that the discrete-time quantum walk is able to implement the same universal gate set and thus both discrete and continuous-time quantum walks are computational primitives. Additionally, we give a set of components on which the discrete-time quantum walk provides perfect state transfer.

  6. 29 CFR 1603.106 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... EXEMPT STATE AND LOCAL GOVERNMENT EMPLOYEE COMPLAINTS OF EMPLOYMENT DISCRIMINATION UNDER SECTION 304 OF THE GOVERNMENT EMPLOYEE RIGHTS ACT OF 1991 Administrative Process § 1603.106 Computation of time....

  7. 29 CFR 1921.22 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... WORKERS' COMPENSATION ACT Miscellaneous § 1921.22 Computation of time. Sundays and holidays shall be... expires on a Sunday or legal holiday, such period shall be extended to include the next following...

  8. 29 CFR 1921.22 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... WORKERS' COMPENSATION ACT Miscellaneous § 1921.22 Computation of time. Sundays and holidays shall be... expires on a Sunday or legal holiday, such period shall be extended to include the next following...

  9. 16 CFR 1502.2 - Computation of time periods.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... officer, or by the Commission, Saturdays, Sundays, and Federal holidays are included in computing time. However, if the last day for taking such action falls on a Saturday, Sunday, or Federal holiday,...

  10. 16 CFR 1502.2 - Computation of time periods.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... officer, or by the Commission, Saturdays, Sundays, and Federal holidays are included in computing time. However, if the last day for taking such action falls on a Saturday, Sunday, or Federal holiday,...

  11. 39 CFR 958.21 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... PENALTIES, CLEAN-UP COSTS AND DAMAGES FOR VIOLATION OF HAZARDOUS MATERIAL REGULATIONS § 958.21 Computation... this part, the time begins with the day following the act, event, or default, and includes the last...

  12. 39 CFR 958.21 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... PENALTIES, CLEAN-UP COSTS AND DAMAGES FOR VIOLATION OF HAZARDOUS MATERIAL REGULATIONS § 958.21 Computation... this part, the time begins with the day following the act, event, or default, and includes the last...

  13. 32 CFR 150.7 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... MILITARY JUSTICE COURTS OF CRIMINAL APPEALS RULES OF PRACTICE AND PROCEDURE § 150.7 Computation of time. In... Chief Judge, in which event the period runs until the end of the next day which is neither a...

  14. 15 CFR 930.124 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... MANAGEMENT FEDERAL CONSISTENCY WITH APPROVED COASTAL MANAGEMENT PROGRAMS Appeal to the Secretary for Review Related to the Objectives of the Act and National Security Interests § 930.124 Computation of time....

  15. 29 CFR 1603.106 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... EXEMPT STATE AND LOCAL GOVERNMENT EMPLOYEE COMPLAINTS OF EMPLOYMENT DISCRIMINATION UNDER SECTION 304 OF THE GOVERNMENT EMPLOYEE RIGHTS ACT OF 1991 Administrative Process § 1603.106 Computation of time....

  16. 20 CFR 655.1030 - Service and computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Filed by Employers Utilizing F-1 Students in Off-Campus Work § 655.1030 Service and computation of time... the attorneys for the Administrator. One copy shall be served on the Associate Solicitor, Division...

  17. 14 CFR 13.212 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 1 2011-01-01 2011-01-01 false Computation of time. 13.212 Section 13.212 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES... time. (a) This section applies to any period of time prescribed or allowed by this subpart, by...

  18. 40 CFR 97.607 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR SO2 Group 1 Trading Program § 97.607 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the TR SO2... event occurs. (b) Unless otherwise stated, any time period scheduled, under the TR SO2 Group 1...

  19. 40 CFR 97.607 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR SO2 Group 1 Trading Program § 97.607 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the TR SO2... event occurs. (b) Unless otherwise stated, any time period scheduled, under the TR SO2 Group 1...

  20. 14 CFR 13.212 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Computation of time. 13.212 Section 13.212 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES... time. (a) This section applies to any period of time prescribed or allowed by this subpart, by...

  1. 32 CFR 1656.18 - Computation of creditable time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 1656.18 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM ALTERNATIVE SERVICE § 1656.18 Computation of creditable time. (a) Creditable time starts when the ASW begins... placement and job interviews performed under orders issued by Selective Service. Creditable time may...

  2. 32 CFR 1656.18 - Computation of creditable time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 1656.18 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM ALTERNATIVE SERVICE § 1656.18 Computation of creditable time. (a) Creditable time starts when the ASW begins... placement and job interviews performed under orders issued by Selective Service. Creditable time may...

  3. 32 CFR 1656.18 - Computation of creditable time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 1656.18 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM ALTERNATIVE SERVICE § 1656.18 Computation of creditable time. (a) Creditable time starts when the ASW begins... placement and job interviews performed under orders issued by Selective Service. Creditable time may...

  4. 32 CFR 1656.18 - Computation of creditable time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 1656.18 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM ALTERNATIVE SERVICE § 1656.18 Computation of creditable time. (a) Creditable time starts when the ASW begins... placement and job interviews performed under orders issued by Selective Service. Creditable time may...

  5. 32 CFR 1656.18 - Computation of creditable time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 1656.18 National Defense Other Regulations Relating to National Defense SELECTIVE SERVICE SYSTEM ALTERNATIVE SERVICE § 1656.18 Computation of creditable time. (a) Creditable time starts when the ASW begins... placement and job interviews performed under orders issued by Selective Service. Creditable time may...

  6. 40 CFR 97.607 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR SO2 Group 1 Trading Program § 97.607 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the TR SO2... event occurs. (b) Unless otherwise stated, any time period scheduled, under the TR SO2 Group 1...

  7. 40 CFR 97.407 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR NOX Annual Trading Program § 97.407 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the TR NOX... event occurs. (b) Unless otherwise stated, any time period scheduled, under the TR NOX Annual...

  8. 40 CFR 97.407 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR NOX Annual Trading Program § 97.407 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the TR NOX... event occurs. (b) Unless otherwise stated, any time period scheduled, under the TR NOX Annual...

  9. 40 CFR 97.407 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR NOX Annual Trading Program § 97.407 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the TR NOX... event occurs. (b) Unless otherwise stated, any time period scheduled, under the TR NOX Annual...

  10. 40 CFR 96.307 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... occurs. (c) Unless otherwise stated, if the final day of any time period, under the CAIR NOX Ozone Season... Ozone Season Trading Program General Provisions § 96.307 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on...

  11. 40 CFR 96.307 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... occurs. (c) Unless otherwise stated, if the final day of any time period, under the CAIR NOX Ozone Season... Ozone Season Trading Program General Provisions § 96.307 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on...

  12. 40 CFR 96.307 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... occurs. (c) Unless otherwise stated, if the final day of any time period, under the CAIR NOX Ozone Season... Ozone Season Trading Program General Provisions § 96.307 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on...

  13. 40 CFR 96.307 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... occurs. (c) Unless otherwise stated, if the final day of any time period, under the CAIR NOX Ozone Season... Ozone Season Trading Program General Provisions § 96.307 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on...

  14. 40 CFR 96.307 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... occurs. (c) Unless otherwise stated, if the final day of any time period, under the CAIR NOX Ozone Season... Ozone Season Trading Program General Provisions § 96.307 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on...

  15. GPU and APU computations of Finite Time Lyapunov Exponent fields

    NASA Astrophysics Data System (ADS)

    Conti, Christian; Rossinelli, Diego; Koumoutsakos, Petros

    2012-03-01

    We present GPU and APU accelerated computations of Finite-Time Lyapunov Exponent (FTLE) fields. The calculation of FTLEs is a computationally intensive process, as in order to obtain the sharp ridges associated with the Lagrangian Coherent Structures an extensive resampling of the flow field is required. The computational performance of this resampling is limited by the memory bandwidth of the underlying computer architecture. The present technique harnesses data-parallel execution of many-core architectures and relies on fast and accurate evaluations of moment conserving functions for the mesh to particle interpolations. We demonstrate how the computation of FTLEs can be efficiently performed on a GPU and on an APU through OpenCL and we report over one order of magnitude improvements over multi-threaded executions in FTLE computations of bluff body flows.

  16. CPU timing routines for a CONVEX C220 computer system

    NASA Technical Reports Server (NTRS)

    Bynum, Mary Ann

    1989-01-01

    The timing routines available on the CONVEX C220 computer system in the Structural Mechanics Division (SMD) at NASA Langley Research Center are examined. The function of the timing routines, the use of the timing routines in sequential, parallel, and vector code, and the interpretation of the results from the timing routines with respect to the CONVEX model of computing are described. The timing routines available on the SMD CONVEX fall into two groups. The first group includes standard timing routines generally available with UNIX 4.3 BSD operating systems, while the second group includes routines unique to the SMD CONVEX. The standard timing routines described in this report are /bin/csh time,/bin/time, etime, and ctime. The routines unique to the SMD CONVEX are getinfo, second, cputime, toc, and a parallel profiling package made up of palprof, palinit, and palsum.

  17. Continuous-time symmetric Hopfield nets are computationally universal.

    PubMed

    Síma, Jirí; Orponen, Pekka

    2003-03-01

    We establish a fundamental result in the theory of computation by continuous-time dynamical systems by showing that systems corresponding to so-called continuous-time symmetric Hopfield nets are capable of general computation. As is well known, such networks have very constrained Lyapunov-function controlled dynamics. Nevertheless, we show that they are universal and efficient computational devices, in the sense that any convergent synchronous fully parallel computation by a recurrent network of n discrete-time binary neurons, with in general asymmetric coupling weights, can be simulated by a symmetric continuous-time Hopfield net containing only 18n + 7 units employing the saturated-linear activation function. Moreover, if the asymmetric network has maximum integer weight size w(max) and converges in discrete time t*, then the corresponding Hopfield net can be designed to operate in continuous time Theta(t*/epsilon) for any epsilon > 0 such that w(max)2(12n) computation models, our result implies that any polynomially space-bounded Turing machine can be simulated by a family of polynomial-size continuous-time symmetric Hopfield nets.

  18. Continuous-time symmetric Hopfield nets are computationally universal.

    PubMed

    Síma, Jirí; Orponen, Pekka

    2003-03-01

    We establish a fundamental result in the theory of computation by continuous-time dynamical systems by showing that systems corresponding to so-called continuous-time symmetric Hopfield nets are capable of general computation. As is well known, such networks have very constrained Lyapunov-function controlled dynamics. Nevertheless, we show that they are universal and efficient computational devices, in the sense that any convergent synchronous fully parallel computation by a recurrent network of n discrete-time binary neurons, with in general asymmetric coupling weights, can be simulated by a symmetric continuous-time Hopfield net containing only 18n + 7 units employing the saturated-linear activation function. Moreover, if the asymmetric network has maximum integer weight size w(max) and converges in discrete time t*, then the corresponding Hopfield net can be designed to operate in continuous time Theta(t*/epsilon) for any epsilon > 0 such that w(max)2(12n) computation models, our result implies that any polynomially space-bounded Turing machine can be simulated by a family of polynomial-size continuous-time symmetric Hopfield nets. PMID:12620163

  19. Data Acceptance Criteria for Standardized Human-Associated Fecal Source Identification Quantitative Real-Time PCR Methods.

    PubMed

    Shanks, Orin C; Kelty, Catherine A; Oshiro, Robin; Haugland, Richard A; Madi, Tania; Brooks, Lauren; Field, Katharine G; Sivaganesan, Mano

    2016-05-01

    There is growing interest in the application of human-associated fecal source identification quantitative real-time PCR (qPCR) technologies for water quality management. The transition from a research tool to a standardized protocol requires a high degree of confidence in data quality across laboratories. Data quality is typically determined through a series of specifications that ensure good experimental practice and the absence of bias in the results due to DNA isolation and amplification interferences. However, there is currently a lack of consensus on how best to evaluate and interpret human fecal source identification qPCR experiments. This is, in part, due to the lack of standardized protocols and information on interlaboratory variability under conditions for data acceptance. The aim of this study is to provide users and reviewers with a complete series of conditions for data acceptance derived from a multiple laboratory data set using standardized procedures. To establish these benchmarks, data from HF183/BacR287 and HumM2 human-associated qPCR methods were generated across 14 laboratories. Each laboratory followed a standardized protocol utilizing the same lot of reference DNA materials, DNA isolation kits, amplification reagents, and test samples to generate comparable data. After removal of outliers, a nested analysis of variance (ANOVA) was used to establish proficiency metrics that include lab-to-lab, replicate testing within a lab, and random error for amplification inhibition and sample processing controls. Other data acceptance measurements included extraneous DNA contamination assessments (no-template and extraction blank controls) and calibration model performance (correlation coefficient, amplification efficiency, and lower limit of quantification). To demonstrate the implementation of the proposed standardized protocols and data acceptance criteria, comparable data from two additional laboratories were reviewed. The data acceptance criteria

  20. Data Acceptance Criteria for Standardized Human-Associated Fecal Source Identification Quantitative Real-Time PCR Methods

    PubMed Central

    Kelty, Catherine A.; Oshiro, Robin; Haugland, Richard A.; Madi, Tania; Brooks, Lauren; Field, Katharine G.; Sivaganesan, Mano

    2016-01-01

    There is growing interest in the application of human-associated fecal source identification quantitative real-time PCR (qPCR) technologies for water quality management. The transition from a research tool to a standardized protocol requires a high degree of confidence in data quality across laboratories. Data quality is typically determined through a series of specifications that ensure good experimental practice and the absence of bias in the results due to DNA isolation and amplification interferences. However, there is currently a lack of consensus on how best to evaluate and interpret human fecal source identification qPCR experiments. This is, in part, due to the lack of standardized protocols and information on interlaboratory variability under conditions for data acceptance. The aim of this study is to provide users and reviewers with a complete series of conditions for data acceptance derived from a multiple laboratory data set using standardized procedures. To establish these benchmarks, data from HF183/BacR287 and HumM2 human-associated qPCR methods were generated across 14 laboratories. Each laboratory followed a standardized protocol utilizing the same lot of reference DNA materials, DNA isolation kits, amplification reagents, and test samples to generate comparable data. After removal of outliers, a nested analysis of variance (ANOVA) was used to establish proficiency metrics that include lab-to-lab, replicate testing within a lab, and random error for amplification inhibition and sample processing controls. Other data acceptance measurements included extraneous DNA contamination assessments (no-template and extraction blank controls) and calibration model performance (correlation coefficient, amplification efficiency, and lower limit of quantification). To demonstrate the implementation of the proposed standardized protocols and data acceptance criteria, comparable data from two additional laboratories were reviewed. The data acceptance criteria

  1. The Effects of a Computer-Assisted Instruction Program on Peer Acceptance, Teacher Acceptance, and Self-Concept of Mildly Handicapped Students.

    ERIC Educational Resources Information Center

    Leles, Sam; Culliver, Concetta C.

    A study was undertaken to determine the effects of a computer-assisted instruction (CAI) program on the self-concept of mainstreamed, mildly handicapped fifth-grade students (labeled learning disabled, emotionally conflicted, and educable mentally retarded) attending 13 different elementary schools in Tuscaloosa County, Alabama. A control group…

  2. 10 CFR 13.27 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 1 2012-01-01 2012-01-01 false Computation of time. 13.27 Section 13.27 Energy NUCLEAR... time is added to the prescribed period except in the following circumstances: (1) If a notice or document is served upon a participant, by first-class mail only, three (3) calendar days will be added...

  3. 40 CFR 72.11 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) PERMITS REGULATION Acid Rain Program General Provisions § 72.11 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the Acid Rain Program, to begin on the occurrence of an act or... scheduled, under the Acid Rain Program, to begin before the occurrence of an act or event shall be...

  4. 40 CFR 72.11 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) PERMITS REGULATION Acid Rain Program General Provisions § 72.11 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the Acid Rain Program, to begin on the occurrence of an act or... scheduled, under the Acid Rain Program, to begin before the occurrence of an act or event shall be...

  5. 40 CFR 72.11 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) PERMITS REGULATION Acid Rain Program General Provisions § 72.11 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the Acid Rain Program, to begin on the occurrence of an act or... scheduled, under the Acid Rain Program, to begin before the occurrence of an act or event shall be...

  6. 40 CFR 72.11 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) PERMITS REGULATION Acid Rain Program General Provisions § 72.11 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the Acid Rain Program, to begin on the occurrence of an act or... scheduled, under the Acid Rain Program, to begin before the occurrence of an act or event shall be...

  7. 40 CFR 72.11 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) PERMITS REGULATION Acid Rain Program General Provisions § 72.11 Computation of time. (a) Unless otherwise stated, any time period scheduled, under the Acid Rain Program, to begin on the occurrence of an act or... scheduled, under the Acid Rain Program, to begin before the occurrence of an act or event shall be...

  8. 20 CFR 802.221 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 20 Employees' Benefits 3 2011-04-01 2011-04-01 false Computation of time. 802.221 Section 802.221 Employees' Benefits BENEFITS REVIEW BOARD, DEPARTMENT OF LABOR RULES OF PRACTICE AND PROCEDURE Prereview... provide otherwise, the day from which the designated period of time begins to run shall not be...

  9. 20 CFR 802.221 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Computation of time. 802.221 Section 802.221 Employees' Benefits BENEFITS REVIEW BOARD, DEPARTMENT OF LABOR RULES OF PRACTICE AND PROCEDURE Prereview... provide otherwise, the day from which the designated period of time begins to run shall not be...

  10. 20 CFR 802.221 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 20 Employees' Benefits 4 2012-04-01 2012-04-01 false Computation of time. 802.221 Section 802.221 Employees' Benefits BENEFITS REVIEW BOARD, DEPARTMENT OF LABOR RULES OF PRACTICE AND PROCEDURE Prereview... provide otherwise, the day from which the designated period of time begins to run shall not be...

  11. 20 CFR 802.221 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 20 Employees' Benefits 4 2014-04-01 2014-04-01 false Computation of time. 802.221 Section 802.221 Employees' Benefits BENEFITS REVIEW BOARD, DEPARTMENT OF LABOR RULES OF PRACTICE AND PROCEDURE Prereview... provide otherwise, the day from which the designated period of time begins to run shall not be...

  12. TimeSet: A computer program that accesses five atomic time services on two continents

    NASA Technical Reports Server (NTRS)

    Petrakis, P. L.

    1993-01-01

    TimeSet is a shareware program for accessing digital time services by telephone. At its initial release, it was capable of capturing time signals only from the U.S. Naval Observatory to set a computer's clock. Later the ability to synchronize with the National Institute of Standards and Technology was added. Now, in Version 7.10, TimeSet is able to access three additional telephone time services in Europe - in Sweden, Austria, and Italy - making a total of five official services addressable by the program. A companion program, TimeGen, allows yet another source of telephone time data strings for callers equipped with TimeSet version 7.10. TimeGen synthesizes UTC time data strings in the Naval Observatory's format from an accurately set and maintained DOS computer clock, and transmits them to callers. This allows an unlimited number of 'freelance' time generating stations to be created. Timesetting from TimeGen is made feasible by the advent of Becker's RighTime, a shareware program that learns the drift characteristics of a computer's clock and continuously applies a correction to keep it accurate, and also brings .01 second resolution to the DOS clock. With clock regulation by RighTime and periodic update calls by the TimeGen station to an official time source via TimeSet, TimeGen offers the same degree of accuracy within the resolution of the computer clock as any official atomic time source.

  13. The computational power of time dilation in special relativity

    NASA Astrophysics Data System (ADS)

    Biamonte, Jacob

    2014-03-01

    The Lorentzian length of a timelike curve connecting both endpoints of a classical computation is a function of the path taken through Minkowski spacetime. The associated runtime difference is due to time-dilation: the phenomenon whereby an observer finds that another's physically identical ideal clock has ticked at a different rate than their own clock. Using ideas appearing in the framework of computational complexity theory, time-dilation is quantified as an algorithmic resource by relating relativistic energy to an nth order polynomial time reduction at the completion of an observer's journey. These results enable a comparison between the optimal quadratic Grover speedup from quantum computing and an n=2 speedup using classical computers and relativistic effects. The goal is not to propose a practical model of computation, but to probe the ultimate limits physics places on computation. Parts of this talk are based on [J.Phys.Conf.Ser. 229:012020 (2010), arXiv:0907.1579]. Support is acknowledged from the Foundational Questions Institute (FQXi) and the Compagnia di San Paolo Foundation.

  14. The design of a scalable, fixed-time computer benchmark

    SciTech Connect

    Gustafson, J.; Rover, D.; Elbert, S.; Carter, M.

    1990-10-01

    By using the principle of fixed time benchmarking, it is possible to compare a very wide range of computers, from a small personal computer to the most powerful parallel supercomputer, an a single scale. Fixed-time benchmarks promise far greater longevity than those based on a particular problem size, and are more appropriate for grand challenge'' capability comparison. We present the design of a benchmark, SLALOM{trademark}, that scales automatically to the computing power available, and corrects several deficiencies in various existing benchmarks: it is highly scalable, it solves a real problem, it includes input and output times, and it can be run on parallel machines of all kinds, using any convenient language. The benchmark provides a reasonable estimate of the size of problem solvable on scientific computers. Results are presented that span six orders of magnitude for contemporary computers of various architectures. The benchmarks also can be used to demonstrate a new source of superlinear speedup in parallel computers. 15 refs., 14 figs., 3 tabs.

  15. Computational methods to obtain time optimal jet engine control

    NASA Technical Reports Server (NTRS)

    Basso, R. J.; Leake, R. J.

    1976-01-01

    Dynamic Programming and the Fletcher-Reeves Conjugate Gradient Method are two existing methods which can be applied to solve a general class of unconstrained fixed time, free right end optimal control problems. New techniques are developed to adapt these methods to solve a time optimal control problem with state variable and control constraints. Specifically, they are applied to compute a time optimal control for a jet engine control problem.

  16. Research plan for establishing the effects of time varying noise exposures on community annoyance and acceptability

    NASA Technical Reports Server (NTRS)

    Borsky, P. N.

    1980-01-01

    The design of a community noise survey to determine the effects of time varying noise exposures in residential communities is presented. Complex physical and human variables involved in the health and welfare effects of environmental noise and the number-level tradeoffs and time of day penalties are among the factors considered. Emphasis is placed on community reactions where noise exposures are equal in day or evening but differ in the night time, and the effects of ambient noise on more intense aircraft noise exposures. Thirteen different times of day and types of operation situations with exposed populations up to 8-10 miles from the airport are identified. A detailed personal interview questionnaire as well as specific instructions to interviewers are included.

  17. Lightweight distributed computing for intraoperative real-time image guidance

    NASA Astrophysics Data System (ADS)

    Suwelack, Stefan; Katic, Darko; Wagner, Simon; Spengler, Patrick; Bodenstedt, Sebastian; Röhl, Sebastian; Dillmann, Rüdiger; Speidel, Stefanie

    2012-02-01

    In order to provide real-time intraoperative guidance, computer assisted surgery (CAS) systems often rely on computationally expensive algorithms. The real-time constraint is especially challenging if several components such as intraoperative image processing, soft tissue registration or context aware visualization are combined in a single system. In this paper, we present a lightweight approach to distribute the workload over several workstations based on the OpenIGTLink protocol. We use XML-based message passing for remote procedure calls and native types for transferring data such as images, meshes or point coordinates. Two different, but typical scenarios are considered in order to evaluate the performance of the new system. First, we analyze a real-time soft tissue registration algorithm based on a finite element (FE) model. Here, we use the proposed approach to distribute the computational workload between a primary workstation that handles sensor data processing and visualization and a dedicated workstation that runs the real-time FE algorithm. We show that the additional overhead that is introduced by the technique is small compared to the total execution time. Furthermore, the approach is used to speed up a context aware augmented reality based navigation system for dental implant surgery. In this scenario, the additional delay for running the computationally expensive reasoning server on a separate workstation is less than a millisecond. The results show that the presented approach is a promising strategy to speed up real-time CAS systems.

  18. Effect of marinating time and low pH on marinade performance and sensory acceptability of poultry meat.

    PubMed

    Yusop, Salma M; O'Sullivan, Maurice G; Kerry, John F; Kerry, Joseph P

    2010-08-01

    The effects of marinating time (30, 60, 120 and 180 min) and acidic marinade pH (3.0, 3.2, 3.4, 3.6, 3.8, 4.0 and 4.2) on the instrumental and sensory properties of cooked Chinese-style marinated chicken were investigated. With increasing marinating time up to 180 min, a significant (P<0.05) increase in surface redness (a* value) and the dark pink sensory attribute was observed, along with a corresponding decrease in lightness (L* value) and colour penetration. Increased marinating times of 120-180 min were found to produce more acceptable end products with increased scores for colour, aroma and flavour attributes. Marinade uptake was greater at higher marinade pH levels of 3.8, 4.0 and 4.2, with the highest marinade uptake (3.34%) recorded at pH 4.0. As changes to core meat pH were not observed, the effect of marinating time (up to 180 min) and marinade pH on the instrumental and sensory properties of Chinese-style marinated chicken were located principally at the surface of samples. Consumers considered surface colour as contributing to acceptability of marinated chicken to a greater degree compared to colour penetration. PMID:20416811

  19. Effect of marinating time and low pH on marinade performance and sensory acceptability of poultry meat.

    PubMed

    Yusop, Salma M; O'Sullivan, Maurice G; Kerry, John F; Kerry, Joseph P

    2010-08-01

    The effects of marinating time (30, 60, 120 and 180 min) and acidic marinade pH (3.0, 3.2, 3.4, 3.6, 3.8, 4.0 and 4.2) on the instrumental and sensory properties of cooked Chinese-style marinated chicken were investigated. With increasing marinating time up to 180 min, a significant (P<0.05) increase in surface redness (a* value) and the dark pink sensory attribute was observed, along with a corresponding decrease in lightness (L* value) and colour penetration. Increased marinating times of 120-180 min were found to produce more acceptable end products with increased scores for colour, aroma and flavour attributes. Marinade uptake was greater at higher marinade pH levels of 3.8, 4.0 and 4.2, with the highest marinade uptake (3.34%) recorded at pH 4.0. As changes to core meat pH were not observed, the effect of marinating time (up to 180 min) and marinade pH on the instrumental and sensory properties of Chinese-style marinated chicken were located principally at the surface of samples. Consumers considered surface colour as contributing to acceptability of marinated chicken to a greater degree compared to colour penetration.

  20. A new computational structure for real-time dynamics

    SciTech Connect

    Izaguirre, A. ); Hashimoto, Minoru )

    1992-08-01

    The authors present an efficient structure for the computation of robot dynamics in real time. The fundamental characteristic of this structure is the division of the computation into a high-priority synchronous task and low-priority background tasks, possibly sharing the resources of a conventional computing unit based on commercial microprocessors. The background tasks compute the inertial and gravitational coefficients as well as the forces due to the velocities of the joints. In each control sample period, the high-priority synchronous task computes the product of the inertial coefficients by the accelerations of the joints and performs the summation of the torques due to the velocities and gravitational forces. Kircanski et al. (1986) have shown that the bandwidth of the variation of joint angles and of their velocities is an order of magnitude less than the variation of joint accelerations. This result agrees with the experiments the authors have carried out using a PUMA 260 robot. Two main strategies contribute to reduce the computational burden associated with the evaluation of the dynamic equations. The first involves the use of efficient algorithms for the evaluation of the equations. The second is aimed at reducing the number of dynamic parameters by identifying beforehand the linear dependencies among these parameters, as well as carrying out a significance analysis of the parameters' contribution to the final joint torques. The actual code used to evaluate this dynamic model is entirely computer generated from experimental data, requiring no other manual intervention than performing a campaign of measurements.

  1. Evaluation of the Acceptability and Feasibility of a Computer-Tailored Intervention to Increase Human Papillomavirus Vaccination among Young Adult Women

    ERIC Educational Resources Information Center

    Paiva, Andrea L.; Lipschitz, Jessica M.; Fernandez, Anne C.; Redding, Colleen A.; Prochaska, James O.

    2014-01-01

    Objective: To examine acceptability and feasibility of a Transtheoretical Model (TTM)-based computer-tailored intervention (CTI) for increasing human papillomavirus (HPV) vaccination in college-aged women. Participants: Two hundred forty-three women aged 18-26 were recruited between February and May of 2011. Methods: Participants completed the…

  2. The Impact of Subjective Norm and Facilitating Conditions on Pre-Service Teachers' Attitude toward Computer Use: A Structural Equation Modeling of an Extended Technology Acceptance Model

    ERIC Educational Resources Information Center

    Teo, Timothy

    2009-01-01

    This study examined pre-service teachers' self-report on their attitude toward computer use. Participants were 285 pre-service teachers at a teacher training institution in Singapore. They completed a survey questionnaire measuring their responses to five constructs which formed a research model using the Technology Acceptance Model (TAM) as a…

  3. A Path Analysis of Pre-Service Teachers' Attitudes to Computer Use: Applying and Extending the Technology Acceptance Model in an Educational Context

    ERIC Educational Resources Information Center

    Teo, Timothy

    2010-01-01

    The purpose of this study is to examine pre-service teachers' attitudes to computers. This study extends the technology acceptance model (TAM) framework by adding subjective norm, facilitating conditions, and technological complexity as external variables. Results show that the TAM and subjective norm, facilitating conditions, and technological…

  4. Exploring Attitudes towards Computer Use among Pre-Service Teachers from Singapore and the UK: A Multi-Group Invariance Test of the Technology Acceptance Model (TAM)

    ERIC Educational Resources Information Center

    Teo, Timothy; Noyes, Jan

    2010-01-01

    Purpose: This paper aims to compare the pre-service teachers from Singapore and the UK on their self-reported attitude towards computer use (ATCU) by employing the technology acceptance model (TAM) as the research framework. Design/methodology/approach: In total, 395 pre-service teachers completed a survey questionnaire measuring their responses…

  5. Imprecise results: Utilizing partial computations in real-time systems

    NASA Technical Reports Server (NTRS)

    Lin, Kwei-Jay; Natarajan, Swaminathan; Liu, Jane W.-S.

    1987-01-01

    In real-time systems, a computation may not have time to complete its execution because of deadline requirements. In such cases, no result except the approximate results produced by the computations up to that point will be available. It is desirable to utilize these imprecise results if possible. Two approaches are proposed to enable computations to return imprecise results when executions cannot be completed normally. The milestone approach records results periodically, and if a deadline is reached, returns the last recorded result. The sieve approach demarcates sections of code which can be skipped if the time available is insufficient. By using these approaches, the system is able to produce imprecise results when deadlines are reached. The design of the Concord project is described which supports imprecise computations using these techniques. Also presented is a general model of imprecise computations using these techniques, as well as one which takes into account the influence of the environment, showing where the latter approach fits into this model.

  6. Literal and figurative interpretations are computed in equal time.

    PubMed

    McElree, B; Nordlie, J

    1999-09-01

    The time courses for constructing literal and figurative interpretations of simple propositions were measured with the response signal, speed-accuracy tradeoff procedure. No differences were found in comprehension speed for literal and figurative strings in a task that required judging whether a string of words was meaningful. Likewise, no differences were found in processing speed for nonsense and figurative strings in a task that required judging whether a string of words was literally true. Figurative strings were less likely to be judged meaningful than were literal strings and less likely to be rejected as literally true than were nonsense strings. The absence of time-course differences is inconsistent with approaches to figurative processing that contend that a figurative interpretation is computed after an anomalous literal interpretation. The time-course profiles suggest that literal and figurative interpretations are computed in equal time but that the meaning of the latter is less constrained than that of the former. PMID:12198788

  7. The computational foundations of time dependent density functional theory

    NASA Astrophysics Data System (ADS)

    Whitfield, James

    2014-03-01

    The mathematical foundations of TDDFT are established through the formal existence of a fictitious non-interacting system (known as the Kohn-Sham system), which can reproduce the one-electron reduced probability density of the actual system. We build upon these works and show that on the interior of the domain of existence, the Kohn-Sham system can be efficiently obtained given the time-dependent density. Since a quantum computer can efficiently produce such time-dependent densities, we present a polynomial time quantum algorithm to generate the time-dependent Kohn-Sham potential with controllable error bounds. Further, we find that systems do not immediately become non-representable but rather become ill-representable as one approaches this boundary. A representability parameter is defined in our work which quantifies the distance to the boundary of representability and the computational difficulty of finding the Kohn-Sham system.

  8. Effects of Acceptability on Teachers' Implementation of Curriculum-Based Measurement and Student Achievement in Mathematics Computation.

    ERIC Educational Resources Information Center

    Allinder, Rose M.; Oats, Robert G.

    1997-01-01

    A study of 12 special education teachers who had a high acceptance of curriculum-based assessment and 9 teachers who had a low acceptance found they differed on two of five implementation measures. Also, there was a significant difference in the rate of growth affected by their students in math. (Author/CR)

  9. Time-partitioning simulation models for calculation on parallel computers

    NASA Technical Reports Server (NTRS)

    Milner, Edward J.; Blech, Richard A.; Chima, Rodrick V.

    1987-01-01

    A technique allowing time-staggered solution of partial differential equations is presented in this report. Using this technique, called time-partitioning, simulation execution speedup is proportional to the number of processors used because all processors operate simultaneously, with each updating of the solution grid at a different time point. The technique is limited by neither the number of processors available nor by the dimension of the solution grid. Time-partitioning was used to obtain the flow pattern through a cascade of airfoils, modeled by the Euler partial differential equations. An execution speedup factor of 1.77 was achieved using a two processor Cray X-MP/24 computer.

  10. 10 CFR 2.306 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 1 2012-01-01 2012-01-01 false Computation of time. 2.306 Section 2.306 Energy NUCLEAR... added to the prescribed period except in the following circumstances: (1) If a notice or document is served upon a participant, by first-class mail only, three (3) calendar days will be added to...

  11. 14 CFR 16.17 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Computation of time. 16.17 Section 16.17 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PROCEDURAL RULES RULES OF PRACTICE FOR FEDERALLY-ASSISTED AIRPORT ENFORCEMENT PROCEEDINGS General Rules Applicable to Complaints, Proceedings Initiated by the FAA,...

  12. 28 CFR 51.9 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... THE VOTING RIGHTS ACT OF 1965, AS AMENDED General Provisions § 51.9 Computation of time. (a) The... voting. (b) Except as specified in §§ 51.37, 51.39, and 51.42 the 60-day period shall commence...

  13. 40 CFR 222.13 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 222.13 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) OCEAN DUMPING ACTION ON OCEAN DUMPING PERMIT APPLICATIONS UNDER SECTION 102 OF THE ACT § 222.13 Computation of time. In... Environmental Protection Agency is not open for business, in which event the period runs until the end of...

  14. 40 CFR 222.13 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 222.13 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) OCEAN DUMPING ACTION ON OCEAN DUMPING PERMIT APPLICATIONS UNDER SECTION 102 OF THE ACT § 222.13 Computation of time. In... Environmental Protection Agency is not open for business, in which event the period runs until the end of...

  15. 20 CFR 726.308 - Service and computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... COAL MINE HEALTH AND SAFETY ACT OF 1969, AS AMENDED BLACK LUNG BENEFITS; REQUIREMENTS FOR COAL MINE OPERATOR'S INSURANCE Civil Money Penalties § 726.308 Service and computation of time. (a) Service of... the Solicitor, U.S. Department of Labor, 200 Constitution Ave., NW., Washington, DC 20210, and...

  16. 20 CFR 726.308 - Service and computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... MINE HEALTH AND SAFETY ACT OF 1969, AS AMENDED BLACK LUNG BENEFITS; REQUIREMENTS FOR COAL MINE OPERATOR'S INSURANCE Civil Money Penalties § 726.308 Service and computation of time. (a) Service of... the Solicitor, U.S. Department of Labor, 200 Constitution Ave., NW., Washington, DC 20210, and...

  17. 40 CFR 300.7 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 29 2012-07-01 2012-07-01 false Computation of time. 300.7 Section 300.7 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SUPERFUND, EMERGENCY PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS NATIONAL OIL AND HAZARDOUS SUBSTANCES POLLUTION...

  18. 40 CFR 300.7 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 28 2011-07-01 2011-07-01 false Computation of time. 300.7 Section 300.7 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SUPERFUND, EMERGENCY PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS NATIONAL OIL AND HAZARDOUS SUBSTANCES POLLUTION...

  19. 40 CFR 300.7 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 29 2013-07-01 2013-07-01 false Computation of time. 300.7 Section 300.7 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SUPERFUND, EMERGENCY PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS NATIONAL OIL AND HAZARDOUS SUBSTANCES POLLUTION...

  20. 40 CFR 300.7 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 27 2010-07-01 2010-07-01 false Computation of time. 300.7 Section 300.7 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SUPERFUND, EMERGENCY PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS NATIONAL OIL AND HAZARDOUS SUBSTANCES POLLUTION...

  1. 40 CFR 300.7 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 28 2014-07-01 2014-07-01 false Computation of time. 300.7 Section 300.7 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SUPERFUND, EMERGENCY PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS NATIONAL OIL AND HAZARDOUS SUBSTANCES POLLUTION...

  2. The Time-Sharing Computer In Introductory Earth Science.

    ERIC Educational Resources Information Center

    MacDonald, William D.; MacDonald, Geraldine E.

    Time-sharing computer-assisted instructional (CAI) programs employing the APL language are being used in support of introductory earth science laboratory exercises at the State University of New York at Binghamton. Three examples are sufficient to illustrate the variety of applications to which these programs are put. The BRACH program is used in…

  3. 39 CFR 3001.15 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... unless it is a Saturday, Sunday, or legal holiday for the Commission, in which event the period runs until the end of the next day which is neither a Saturday, Sunday, or holiday. A part-day holiday shall be considered as other days and not as a holiday. In computing a period of time which is 5 days...

  4. 39 CFR 3001.15 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... unless it is a Saturday, Sunday, or legal holiday for the Commission, in which event the period runs until the end of the next day which is neither a Saturday, Sunday, or holiday. A part-day holiday shall be considered as other days and not as a holiday. In computing a period of time which is 5 days...

  5. 46 CFR 4.21-1 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... computed by excluding the first day and including the last unless the last day is Sunday or a legal holiday... legal holiday: Provided, however, That where the time fixed by the regulations in this subchapter or an order of the Board is five days or less all intervening Sundays or legal holidays, other than...

  6. 49 CFR 386.8 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... it is a Saturday, Sunday, or legal Federal holiday in which case the time period will run to the end of the next day that is not a Saturday, Sunday, or legal Federal holiday. All Saturdays, Sundays, and legal Federal holidays except those falling on the last day of the period will be computed. (b) Date...

  7. 39 CFR 3001.15 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... unless it is a Saturday, Sunday, or federal holiday, in which event the period runs until the end of the next day which is neither a Saturday, Sunday, nor a federal holiday. In computing a period of time which is 5 days or fewer, all Saturdays, Sundays, and federal holidays are to be excluded....

  8. 39 CFR 3001.15 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... holiday, in which event the period runs until the end of the next day which is neither a Saturday, Sunday, nor a federal holiday. In computing a period of time which is 5 days or fewer, all Saturdays, Sundays, and federal holidays are to be excluded. Effective Date Note: At 79 FR 33406, June 10, 2014, §...

  9. 46 CFR 4.21-1 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... computed by excluding the first day and including the last unless the last day is Sunday or a legal holiday... legal holiday: Provided, however, That where the time fixed by the regulations in this subchapter or an order of the Board is five days or less all intervening Sundays or legal holidays, other than...

  10. Voice reaction times with recognition for Commodore computers

    NASA Technical Reports Server (NTRS)

    Washburn, David A.; Putney, R. Thompson

    1990-01-01

    Hardware and software modifications are presented that allow for collection and recognition by a Commodore computer of spoken responses. Responses are timed with millisecond accuracy and automatically analyzed and scored. Accuracy data for this device from several experiments are presented. Potential applications and suggestions for improving recognition accuracy are also discussed.

  11. 50 CFR 221.3 - How are time periods computed?

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 10 2013-10-01 2013-10-01 false How are time periods computed? 221.3 Section 221.3 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS PRESCRIPTIONS IN FERC HYDROPOWER LICENSES...

  12. 50 CFR 221.3 - How are time periods computed?

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 50 Wildlife and Fisheries 10 2012-10-01 2012-10-01 false How are time periods computed? 221.3 Section 221.3 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS PRESCRIPTIONS IN FERC HYDROPOWER LICENSES...

  13. 50 CFR 221.3 - How are time periods computed?

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 50 Wildlife and Fisheries 9 2011-10-01 2011-10-01 false How are time periods computed? 221.3 Section 221.3 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS PRESCRIPTIONS IN FERC HYDROPOWER LICENSES...

  14. 50 CFR 221.3 - How are time periods computed?

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 50 Wildlife and Fisheries 10 2014-10-01 2014-10-01 false How are time periods computed? 221.3 Section 221.3 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS PRESCRIPTIONS IN FERC HYDROPOWER LICENSES...

  15. 29 CFR 801.59 - Service and computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 3 2012-07-01 2012-07-01 false Service and computation of time. 801.59 Section 801.59 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR OTHER LAWS APPLICATION OF THE EMPLOYEE POLYGRAPH PROTECTION ACT OF 1988 Administrative Proceedings Rules of...

  16. 29 CFR 801.59 - Service and computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Service and computation of time. 801.59 Section 801.59 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR OTHER LAWS APPLICATION OF THE EMPLOYEE POLYGRAPH PROTECTION ACT OF 1988 Administrative Proceedings Rules of...

  17. 29 CFR 801.59 - Service and computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 3 2011-07-01 2011-07-01 false Service and computation of time. 801.59 Section 801.59 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR OTHER LAWS APPLICATION OF THE EMPLOYEE POLYGRAPH PROTECTION ACT OF 1988 Administrative Proceedings Rules of...

  18. 29 CFR 801.59 - Service and computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 3 2013-07-01 2013-07-01 false Service and computation of time. 801.59 Section 801.59 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR OTHER LAWS APPLICATION OF THE EMPLOYEE POLYGRAPH PROTECTION ACT OF 1988 Administrative Proceedings Rules of...

  19. 29 CFR 801.59 - Service and computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 3 2014-07-01 2014-07-01 false Service and computation of time. 801.59 Section 801.59 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR OTHER LAWS APPLICATION OF THE EMPLOYEE POLYGRAPH PROTECTION ACT OF 1988 Administrative Proceedings Rules of...

  20. 11 CFR 111.2 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... New Year's Day, President's Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day... allowed by this part, the day of the act, event, or default from which the designated period of time begins to run shall not be included. The last day of the period so computed shall be included, unless...

  1. 11 CFR 111.2 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... New Year's Day, President's Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day... allowed by this part, the day of the act, event, or default from which the designated period of time begins to run shall not be included. The last day of the period so computed shall be included, unless...

  2. 11 CFR 111.2 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... New Year's Day, President's Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day... allowed by this part, the day of the act, event, or default from which the designated period of time begins to run shall not be included. The last day of the period so computed shall be included, unless...

  3. 11 CFR 111.2 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... Day, President's Day, Memorial Day, Independence Day, Labor Day, Columbus Day, Veterans Day... this part, the day of the act, event, or default from which the designated period of time begins to run shall not be included. The last day of the period so computed shall be included, unless it is a...

  4. 41 CFR 105-70.027 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 41 Public Contracts and Property Management 3 2013-07-01 2013-07-01 false Computation of time. 105-70.027 Section 105-70.027 Public Contracts and Property Management Federal Property Management Regulations System (Continued) GENERAL SERVICES ADMINISTRATION Regional Offices-General Services Administration 70-IMPLEMENTATION OF THE PROGRAM...

  5. 5 CFR 847.108 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Computation of time. 847.108 Section 847.108 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT (CONTINUED) CIVIL SERVICE REGULATIONS (CONTINUED) ELECTIONS OF RETIREMENT COVERAGE BY CURRENT AND FORMER EMPLOYEES OF NONAPPROPRIATED...

  6. Time Advice and Learning Questions in Computer Simulations

    ERIC Educational Resources Information Center

    Rey, Gunter Daniel

    2011-01-01

    Students (N = 101) used an introductory text and a computer simulation to learn fundamental concepts about statistical analyses (e.g., analysis of variance, regression analysis and General Linear Model). Each learner was randomly assigned to one cell of a 2 (with or without time advice) x 3 (with learning questions and corrective feedback, with…

  7. Computational alternatives to obtain time optimal jet engine control. M.S. Thesis

    NASA Technical Reports Server (NTRS)

    Basso, R. J.; Leake, R. J.

    1976-01-01

    Two computational methods to determine an open loop time optimal control sequence for a simple single spool turbojet engine are described by a set of nonlinear differential equations. Both methods are modifications of widely accepted algorithms which can solve fixed time unconstrained optimal control problems with a free right end. Constrained problems to be considered have fixed right ends and free time. Dynamic programming is defined on a standard problem and it yields a successive approximation solution to the time optimal problem of interest. A feedback control law is obtained and it is then used to determine the corresponding open loop control sequence. The Fletcher-Reeves conjugate gradient method has been selected for adaptation to solve a nonlinear optimal control problem with state variable and control constraints.

  8. 29 CFR 4000.43 - How do I compute a time period?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false How do I compute a time period? 4000.43 Section 4000.43..., ISSUANCE, COMPUTATION OF TIME, AND RECORD RETENTION Computation of Time § 4000.43 How do I compute a time period? (a) In general. If you are computing a time period to which this part applies, whether you...

  9. Neural Computations in a Dynamical System with Multiple Time Scales.

    PubMed

    Mi, Yuanyuan; Lin, Xiaohan; Wu, Si

    2016-01-01

    Neural systems display rich short-term dynamics at various levels, e.g., spike-frequency adaptation (SFA) at the single-neuron level, and short-term facilitation (STF) and depression (STD) at the synapse level. These dynamical features typically cover a broad range of time scales and exhibit large diversity in different brain regions. It remains unclear what is the computational benefit for the brain to have such variability in short-term dynamics. In this study, we propose that the brain can exploit such dynamical features to implement multiple seemingly contradictory computations in a single neural circuit. To demonstrate this idea, we use continuous attractor neural network (CANN) as a working model and include STF, SFA and STD with increasing time constants in its dynamics. Three computational tasks are considered, which are persistent activity, adaptation, and anticipative tracking. These tasks require conflicting neural mechanisms, and hence cannot be implemented by a single dynamical feature or any combination with similar time constants. However, with properly coordinated STF, SFA and STD, we show that the network is able to implement the three computational tasks concurrently. We hope this study will shed light on the understanding of how the brain orchestrates its rich dynamics at various levels to realize diverse cognitive functions. PMID:27679569

  10. Neural Computations in a Dynamical System with Multiple Time Scales

    PubMed Central

    Mi, Yuanyuan; Lin, Xiaohan; Wu, Si

    2016-01-01

    Neural systems display rich short-term dynamics at various levels, e.g., spike-frequency adaptation (SFA) at the single-neuron level, and short-term facilitation (STF) and depression (STD) at the synapse level. These dynamical features typically cover a broad range of time scales and exhibit large diversity in different brain regions. It remains unclear what is the computational benefit for the brain to have such variability in short-term dynamics. In this study, we propose that the brain can exploit such dynamical features to implement multiple seemingly contradictory computations in a single neural circuit. To demonstrate this idea, we use continuous attractor neural network (CANN) as a working model and include STF, SFA and STD with increasing time constants in its dynamics. Three computational tasks are considered, which are persistent activity, adaptation, and anticipative tracking. These tasks require conflicting neural mechanisms, and hence cannot be implemented by a single dynamical feature or any combination with similar time constants. However, with properly coordinated STF, SFA and STD, we show that the network is able to implement the three computational tasks concurrently. We hope this study will shed light on the understanding of how the brain orchestrates its rich dynamics at various levels to realize diverse cognitive functions.

  11. Neural Computations in a Dynamical System with Multiple Time Scales

    PubMed Central

    Mi, Yuanyuan; Lin, Xiaohan; Wu, Si

    2016-01-01

    Neural systems display rich short-term dynamics at various levels, e.g., spike-frequency adaptation (SFA) at the single-neuron level, and short-term facilitation (STF) and depression (STD) at the synapse level. These dynamical features typically cover a broad range of time scales and exhibit large diversity in different brain regions. It remains unclear what is the computational benefit for the brain to have such variability in short-term dynamics. In this study, we propose that the brain can exploit such dynamical features to implement multiple seemingly contradictory computations in a single neural circuit. To demonstrate this idea, we use continuous attractor neural network (CANN) as a working model and include STF, SFA and STD with increasing time constants in its dynamics. Three computational tasks are considered, which are persistent activity, adaptation, and anticipative tracking. These tasks require conflicting neural mechanisms, and hence cannot be implemented by a single dynamical feature or any combination with similar time constants. However, with properly coordinated STF, SFA and STD, we show that the network is able to implement the three computational tasks concurrently. We hope this study will shed light on the understanding of how the brain orchestrates its rich dynamics at various levels to realize diverse cognitive functions. PMID:27679569

  12. Computing complex visual features with retinal spike times.

    PubMed

    Gütig, Robert; Gollisch, Tim; Sompolinsky, Haim; Meister, Markus

    2013-01-01

    Neurons in sensory systems can represent information not only by their firing rate, but also by the precise timing of individual spikes. For example, certain retinal ganglion cells, first identified in the salamander, encode the spatial structure of a new image by their first-spike latencies. Here we explore how this temporal code can be used by downstream neural circuits for computing complex features of the image that are not available from the signals of individual ganglion cells. To this end, we feed the experimentally observed spike trains from a population of retinal ganglion cells to an integrate-and-fire model of post-synaptic integration. The synaptic weights of this integration are tuned according to the recently introduced tempotron learning rule. We find that this model neuron can perform complex visual detection tasks in a single synaptic stage that would require multiple stages for neurons operating instead on neural spike counts. Furthermore, the model computes rapidly, using only a single spike per afferent, and can signal its decision in turn by just a single spike. Extending these analyses to large ensembles of simulated retinal signals, we show that the model can detect the orientation of a visual pattern independent of its phase, an operation thought to be one of the primitives in early visual processing. We analyze how these computations work and compare the performance of this model to other schemes for reading out spike-timing information. These results demonstrate that the retina formats spatial information into temporal spike sequences in a way that favors computation in the time domain. Moreover, complex image analysis can be achieved already by a simple integrate-and-fire model neuron, emphasizing the power and plausibility of rapid neural computing with spike times.

  13. Computing classically exact diffusion constants using short-time trajectories

    SciTech Connect

    Voter, A. F.

    1989-07-10

    The classical diffusion constant of a point defect in an infinite lattice of binding sites is shown to be expressible as transition-state-theory rates multiplied by dynamical correction factors computed from short-time classical trajectories initiated at the site boundaries. The expression, which results from time differentiating the lattice-discretized mean-square displacement, is valid at any temperature for which the site lattice is well defined. It thus avoids both the time-scale limitations of direct molecular dynamics and the rare-event requirements of standard dynamical-correction methods.

  14. Efficient quantum algorithm for computing n-time correlation functions.

    PubMed

    Pedernales, J S; Di Candia, R; Egusquiza, I L; Casanova, J; Solano, E

    2014-07-11

    We propose a method for computing n-time correlation functions of arbitrary spinorial, fermionic, and bosonic operators, consisting of an efficient quantum algorithm that encodes these correlations in an initially added ancillary qubit for probe and control tasks. For spinorial and fermionic systems, the reconstruction of arbitrary n-time correlation functions requires the measurement of two ancilla observables, while for bosonic variables time derivatives of the same observables are needed. Finally, we provide examples applicable to different quantum platforms in the frame of the linear response theory.

  15. Real-time Tsunami Inundation Prediction Using High Performance Computers

    NASA Astrophysics Data System (ADS)

    Oishi, Y.; Imamura, F.; Sugawara, D.

    2014-12-01

    Recently off-shore tsunami observation stations based on cabled ocean bottom pressure gauges are actively being deployed especially in Japan. These cabled systems are designed to provide real-time tsunami data before tsunamis reach coastlines for disaster mitigation purposes. To receive real benefits of these observations, real-time analysis techniques to make an effective use of these data are necessary. A representative study was made by Tsushima et al. (2009) that proposed a method to provide instant tsunami source prediction based on achieving tsunami waveform data. As time passes, the prediction is improved by using updated waveform data. After a tsunami source is predicted, tsunami waveforms are synthesized from pre-computed tsunami Green functions of linear long wave equations. Tsushima et al. (2014) updated the method by combining the tsunami waveform inversion with an instant inversion of coseismic crustal deformation and improved the prediction accuracy and speed in the early stages. For disaster mitigation purposes, real-time predictions of tsunami inundation are also important. In this study, we discuss the possibility of real-time tsunami inundation predictions, which require faster-than-real-time tsunami inundation simulation in addition to instant tsunami source analysis. Although the computational amount is large to solve non-linear shallow water equations for inundation predictions, it has become executable through the recent developments of high performance computing technologies. We conducted parallel computations of tsunami inundation and achieved 6.0 TFLOPS by using 19,000 CPU cores. We employed a leap-frog finite difference method with nested staggered grids of which resolution range from 405 m to 5 m. The resolution ratio of each nested domain was 1/3. Total number of grid points were 13 million, and the time step was 0.1 seconds. Tsunami sources of 2011 Tohoku-oki earthquake were tested. The inundation prediction up to 2 hours after the

  16. Soft Real-Time PID Control on a VME Computer

    NASA Technical Reports Server (NTRS)

    Karayan, Vahag; Sander, Stanley; Cageao, Richard

    2007-01-01

    microPID (uPID) is a computer program for real-time proportional + integral + derivative (PID) control of a translation stage in a Fourier-transform ultraviolet spectrometer. microPID implements a PID control loop over a position profile at sampling rate of 8 kHz (sampling period 125microseconds). The software runs in a strippeddown Linux operating system on a VersaModule Eurocard (VME) computer operating in real-time priority queue using an embedded controller, a 16-bit digital-to-analog converter (D/A) board, and a laser-positioning board (LPB). microPID consists of three main parts: (1) VME device-driver routines, (2) software that administers a custom protocol for serial communication with a control computer, and (3) a loop section that obtains the current position from an LPB-driver routine, calculates the ideal position from the profile, and calculates a new voltage command by use of an embedded PID routine all within each sampling period. The voltage command is sent to the D/A board to control the stage. microPID uses special kernel headers to obtain microsecond timing resolution. Inasmuch as microPID implements a single-threaded process and all other processes are disabled, the Linux operating system acts as a soft real-time system.

  17. Is it time to act? The potential of acceptance and commitment therapy for psychological problems following acquired brain injury.

    PubMed

    Kangas, Maria; McDonald, Skye

    2011-04-01

    Behaviour therapies have a well-established, useful tradition in psychological treatments and have undergone several major revisions. Acceptance and Commitment Therapy (ACT) and mindfulness-based approaches are considered a third wave of behavioural therapies. Emerging evidence for ACT has demonstrated that this paradigm has promising effectiveness in improving functionality and well-being in a variety of populations that have psychological disturbances and/or medical problems. In this review we first evaluate traditional cognitive behavioural therapy (CBT) interventions used to manage psychological problems in distressed individuals who have sustained an acquired brain injury (ABI). We provide an overview of the ACT paradigm and the existent evidence base for this intervention. A rationale is outlined for why ACT-based interventions may have potential utility in assisting distressed individuals who have sustained a mild to moderate ABI to move forward with their lives. We also review emerging evidence that lends preliminary support to the implementation of acceptance and mindfulness-based interventions in the rehabilitation of ABI patient groups. On the basis of existent literature, we recommend that it is an opportune time for forthcoming research to rigorously test the efficacy of ACT-based interventions in facilitating ABI patient groups to re-engage in living a valued and meaningful life, in spite of their neurocognitive and physical limitations. The promising utility of testing the efficacy of the ACT paradigm in the context of multimodal rehabilitation programmes for ABI populations is also addressed.

  18. Spike-Timing-Based Computation in Sound Localization

    PubMed Central

    Goodman, Dan F. M.; Brette, Romain

    2010-01-01

    Spike timing is precise in the auditory system and it has been argued that it conveys information about auditory stimuli, in particular about the location of a sound source. However, beyond simple time differences, the way in which neurons might extract this information is unclear and the potential computational advantages are unknown. The computational difficulty of this task for an animal is to locate the source of an unexpected sound from two monaural signals that are highly dependent on the unknown source signal. In neuron models consisting of spectro-temporal filtering and spiking nonlinearity, we found that the binaural structure induced by spatialized sounds is mapped to synchrony patterns that depend on source location rather than on source signal. Location-specific synchrony patterns would then result in the activation of location-specific assemblies of postsynaptic neurons. We designed a spiking neuron model which exploited this principle to locate a variety of sound sources in a virtual acoustic environment using measured human head-related transfer functions. The model was able to accurately estimate the location of previously unknown sounds in both azimuth and elevation (including front/back discrimination) in a known acoustic environment. We found that multiple representations of different acoustic environments could coexist as sets of overlapping neural assemblies which could be associated with spatial locations by Hebbian learning. The model demonstrates the computational relevance of relative spike timing to extract spatial information about sources independently of the source signal. PMID:21085681

  19. 14 CFR 221.190 - Time for filing and computation of time periods.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false Time for filing and computation of time periods. 221.190 Section 221.190 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) ECONOMIC REGULATIONS TARIFFS Electronically Filed Tariffs § 221.190...

  20. 14 CFR 221.190 - Time for filing and computation of time periods.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Time for filing and computation of time periods. 221.190 Section 221.190 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) ECONOMIC REGULATIONS TARIFFS Electronically Filed Tariffs § 221.190...

  1. 7 CFR 1.174 - Filing; service; extensions of time; and computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 1 2010-01-01 2010-01-01 false Filing; service; extensions of time; and computation of time. 1.174 Section 1.174 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Rules of Practice Governing Cease and Desist Proceedings Under Section 2 of the...

  2. 45 CFR 150.429 - Computation of time and extensions of time.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Computation of time and extensions of time. 150.429 Section 150.429 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES REQUIREMENTS RELATING TO HEALTH CARE ACCESS CMS ENFORCEMENT IN GROUP AND INDIVIDUAL INSURANCE MARKETS Administrative...

  3. A heterogeneous hierarchical architecture for real-time computing

    SciTech Connect

    Skroch, D.A.; Fornaro, R.J.

    1988-12-01

    The need for high-speed data acquisition and control algorithms has prompted continued research in the area of multiprocessor systems and related programming techniques. The result presented here is a unique hardware and software architecture for high-speed real-time computer systems. The implementation of a prototype of this architecture has required the integration of architecture, operating systems and programming languages into a cohesive unit. This report describes a Heterogeneous Hierarchial Architecture for Real-Time (H{sup 2} ART) and system software for program loading and interprocessor communication.

  4. Stochastic nonlinear time series forecasting using time-delay reservoir computers: performance and universality.

    PubMed

    Grigoryeva, Lyudmila; Henriques, Julie; Larger, Laurent; Ortega, Juan-Pablo

    2014-07-01

    Reservoir computing is a recently introduced machine learning paradigm that has already shown excellent performances in the processing of empirical data. We study a particular kind of reservoir computers called time-delay reservoirs that are constructed out of the sampling of the solution of a time-delay differential equation and show their good performance in the forecasting of the conditional covariances associated to multivariate discrete-time nonlinear stochastic processes of VEC-GARCH type as well as in the prediction of factual daily market realized volatilities computed with intraday quotes, using as training input daily log-return series of moderate size. We tackle some problems associated to the lack of task-universality for individually operating reservoirs and propose a solution based on the use of parallel arrays of time-delay reservoirs. PMID:24732236

  5. Stochastic nonlinear time series forecasting using time-delay reservoir computers: performance and universality.

    PubMed

    Grigoryeva, Lyudmila; Henriques, Julie; Larger, Laurent; Ortega, Juan-Pablo

    2014-07-01

    Reservoir computing is a recently introduced machine learning paradigm that has already shown excellent performances in the processing of empirical data. We study a particular kind of reservoir computers called time-delay reservoirs that are constructed out of the sampling of the solution of a time-delay differential equation and show their good performance in the forecasting of the conditional covariances associated to multivariate discrete-time nonlinear stochastic processes of VEC-GARCH type as well as in the prediction of factual daily market realized volatilities computed with intraday quotes, using as training input daily log-return series of moderate size. We tackle some problems associated to the lack of task-universality for individually operating reservoirs and propose a solution based on the use of parallel arrays of time-delay reservoirs.

  6. STICK: Spike Time Interval Computational Kernel, a Framework for General Purpose Computation Using Neurons, Precise Timing, Delays, and Synchrony.

    PubMed

    Lagorce, Xavier; Benosman, Ryad

    2015-11-01

    There has been significant research over the past two decades in developing new platforms for spiking neural computation. Current neural computers are primarily developed to mimic biology. They use neural networks, which can be trained to perform specific tasks to mainly solve pattern recognition problems. These machines can do more than simulate biology; they allow us to rethink our current paradigm of computation. The ultimate goal is to develop brain-inspired general purpose computation architectures that can breach the current bottleneck introduced by the von Neumann architecture. This work proposes a new framework for such a machine. We show that the use of neuron-like units with precise timing representation, synaptic diversity, and temporal delays allows us to set a complete, scalable compact computation framework. The framework provides both linear and nonlinear operations, allowing us to represent and solve any function. We show usability in solving real use cases from simple differential equations to sets of nonlinear differential equations leading to chaotic attractors. PMID:26378879

  7. Uniform-acceptance force-bias Monte Carlo method with time scale to study solid-state diffusion

    NASA Astrophysics Data System (ADS)

    Mees, Maarten J.; Pourtois, Geoffrey; Neyts, Erik C.; Thijsse, Barend J.; Stesmans, André

    2012-04-01

    Monte Carlo (MC) methods have a long-standing history as partners of molecular dynamics (MD) to simulate the evolution of materials at the atomic scale. Among these techniques, the uniform-acceptance force-bias Monte Carlo (UFMC) method [G. Dereli, Mol. Simul.10.1080/08927029208022490 8, 351 (1992)] has recently attracted attention [M. Timonova , Phys. Rev. BPRBMDO1098-012110.1103/PhysRevB.81.144107 81, 144107 (2010)] thanks to its apparent capacity of being able to simulate physical processes in a reduced number of iterations compared to classical MD methods. The origin of this efficiency remains, however, unclear. In this work we derive a UFMC method starting from basic thermodynamic principles, which leads to an intuitive and unambiguous formalism. The approach includes a statistically relevant time step per Monte Carlo iteration, showing a significant speed-up compared to MD simulations. This time-stamped force-bias Monte Carlo (tfMC) formalism is tested on both simple one-dimensional and three-dimensional systems. Both test-cases give excellent results in agreement with analytical solutions and literature reports. The inclusion of a time scale, the simplicity of the method, and the enhancement of the time step compared to classical MD methods make this method very appealing for studying the dynamics of many-particle systems.

  8. In this issue: Time to replace doctors' judgement with computers.

    PubMed

    de Lusignan, Simon

    2015-01-01

    Informaticians continue to rise to the challenge, set by the English Health Minister, of trying to replace doctors' judgement with computers. This issue describes successes and where there are barriers. However, whilst there is progress this tends to be incremental and there are grand challenges to be overcome before computers can replace clinician. These grand challenges include: (1) improving usability so it is possible to more readily incorporate technology into clinical workflow; (2) rigorous new analytic methods that make use of the mass of available data, 'Big data', to create real-world evidence; (3) faster ways of meeting regulatory and legal requirements including ensuring privacy; (4) provision of reimbursement models to fund innovative technology that can substitute for clinical time and (5) recognition that innovations that improve quality also often increase cost. Informatics more is likely to support and augment clinical decision making rather than replace clinicians. PMID:26577428

  9. Accuracy vs. computational time: translating aortic simulations to the clinic.

    PubMed

    Brown, Alistair G; Shi, Yubing; Marzo, Alberto; Staicu, Cristina; Valverde, Isra; Beerbaum, Philipp; Lawford, Patricia V; Hose, D Rodney

    2012-02-01

    State of the art simulations of aortic haemodynamics feature full fluid-structure interaction (FSI) and coupled 0D boundary conditions. Such analyses require not only significant computational resource but also weeks to months of run time, which compromises the effectiveness of their translation to a clinical workflow. This article employs three computational fluid methodologies, of varying levels of complexity with coupled 0D boundary conditions, to simulate the haemodynamics within a patient-specific aorta. The most comprehensive model is a full FSI simulation. The simplest is a rigid walled incompressible fluid simulation while an alternative middle-ground approach employs a compressible fluid, tuned to elicit a response analogous to the compliance of the aortic wall. The results demonstrate that, in the context of certain clinical questions, the simpler analysis methods may capture the important characteristics of the flow field.

  10. Computational Modeling of Semiconductor Dynamics at Femtosecond Time Scales

    NASA Technical Reports Server (NTRS)

    Agrawal, Govind P.; Goorjian, Peter M.

    1998-01-01

    The Interchange No. NCC2-5149 deals with the emerging technology of photonic (or optoelectronic) integrated circuits (PICs or OEICs). In PICs, optical and electronic components are grown together on the same chip. To build such devices and subsystems, one needs to model the entire chip. PICs are useful for building components for integrated optical transmitters, integrated optical receivers, optical data storage systems, optical interconnects, and optical computers. For example, the current commercial rate for optical data transmission is 2.5 gigabits per second, whereas the use of shorter pulses to improve optical transmission rates would yield an increase of 400 to 1000 times. The improved optical data transmitters would be used in telecommunications networks and computer local-area networks. Also, these components can be applied to activities in space, such as satellite to satellite communications, when the data transmissions are made at optical frequencies. The research project consisted of developing accurate computer modeling of electromagnetic wave propagation in semiconductors. Such modeling is necessary for the successful development of PICs. More specifically, these computer codes would enable the modeling of such devices, including their subsystems, such as semiconductor lasers and semiconductor amplifiers in which there is femtosecond pulse propagation. Presently, there are no computer codes that could provide this modeling. Current codes do not solve the full vector, nonlinear, Maxwell's equations, which are required for these short pulses and also current codes do not solve the semiconductor Bloch equations, which are required to accurately describe the material's interaction with femtosecond pulses. The research performed under NCC2-5149 solves the combined Maxwell's and Bloch's equations.

  11. Real-time computing without stable states: a new framework for neural computation based on perturbations.

    PubMed

    Maass, Wolfgang; Natschläger, Thomas; Markram, Henry

    2002-11-01

    A key challenge for neural modeling is to explain how a continuous stream of multimodal input from a rapidly changing environment can be processed by stereotypical recurrent circuits of integrate-and-fire neurons in real time. We propose a new computational model for real-time computing on time-varying input that provides an alternative to paradigms based on Turing machines or attractor neural networks. It does not require a task-dependent construction of neural circuits. Instead, it is based on principles of high-dimensional dynamical systems in combination with statistical learning theory and can be implemented on generic evolved or found recurrent circuitry. It is shown that the inherent transient dynamics of the high-dimensional dynamical system formed by a sufficiently large and heterogeneous neural circuit may serve as universal analog fading memory. Readout neurons can learn to extract in real time from the current state of such recurrent neural circuit information about current and past inputs that may be needed for diverse tasks. Stable internal states are not required for giving a stable output, since transient internal states can be transformed by readout neurons into stable target outputs due to the high dimensionality of the dynamical system. Our approach is based on a rigorous computational model, the liquid state machine, that, unlike Turing machines, does not require sequential transitions between well-defined discrete internal states. It is supported, as the Turing machine is, by rigorous mathematical results that predict universal computational power under idealized conditions, but for the biologically more realistic scenario of real-time processing of time-varying inputs. Our approach provides new perspectives for the interpretation of neural coding, the design of experiments and data analysis in neurophysiology, and the solution of problems in robotics and neurotechnology.

  12. Video training with peer feedback in real-time consultation: acceptability and feasibility in a general-practice setting

    PubMed Central

    Eeckhout, Thomas; Gerits, Michiel; Bouquillon, Dries; Schoenmakers, Birgitte

    2016-01-01

    Objective Since many years, teaching and training in communication skills are cornerstones in the medical education curriculum. Although video recording in a real-time consultation is expected to positively contribute to the learning process, research on this topic is scarce. This study will focus on the feasibility and acceptability of video recording during real-time patient encounters performed by general practitioner (GP) trainees. Method The primary research question addressed the experiences (defined as feasibility and acceptability) of GP trainees in video-recorded vocational training in a general practice. The second research question addressed the appraisal of this training. The procedure of video-recorded training is developed, refined and validated by the Academic Teaching Practice of Leuven since 1974 (Faculty of Medicine of the University of Leuven). The study is set up as a cross-sectional survey without follow-up. Outcome measures were defined as ‘feasibility and acceptability’ (experiences of trainees) of the video-recorded training and were approached by a structured questionnaire with the opportunity to add free text comments. The studied sample consisted of all first-phase trainees of the GP Master 2011–2012 at the University of Leuven. Results Almost 70% of the trainees were positive about recording consultations. Nevertheless, over 60% believed that patients felt uncomfortable during the video-recorded encounter. Almost 90% noticed an improvement of own communication skills through the observation and evaluation of. Most students (85%) experienced the logistical issues as major barrier to perform video consultations on a regular base. Conclusions This study lays the foundation stone for further exploration of the video training in real-time consultations. Both students and teachers on the field acknowledge that the power of imaging is underestimated in the training of communication and vocational skills. The development of supportive

  13. An Empirical Examination of EFL Learners' Perceptual Learning Styles and Acceptance of ASR-Based Computer-Assisted Pronunciation Training

    ERIC Educational Resources Information Center

    Hsu, Liwei

    2016-01-01

    This study aims to explore the structural relationships among the variables of EFL (English as a foreign language) learners' perceptual learning styles and Technology Acceptance Model (TAM). Three hundred and forty-one (n = 341) EFL learners were invited to join a self-regulated English pronunciation training program through automatic speech…

  14. The exposure assessment in current time study: implementation, feasibility, and acceptability of real-time data collection in a community cohort of illicit drug users.

    PubMed

    Kirk, Gregory D; Linas, Beth S; Westergaard, Ryan P; Piggott, Damani; Bollinger, Robert C; Chang, Larry W; Genz, Andrew

    2013-01-01

    Objective. We describe the study design and evaluate the implementation, feasibility, and acceptability of an ecological momentary assessment (EMA) study of illicit drug users. Design. Four sequential field trials targeting observation of 30 individuals followed for a four week period. Participants. Participants were recruited from an ongoing community-cohort of current or former injection drug users. Of 113 individuals enrolled, 109 completed study procedures during four trials conducted from November 2008 to May 2013. Methods. Hand-held electronic diaries used in the initial trials were transitioned to a smartphone platform for the final trial with identical data collection. Random-prompts delivered five times daily assessed participant location, activity, mood, and social context. Event-contingent data collection involved participant self-reports of illicit drug use and craving. Main Outcome Measures. Feasibility measures included participant retention, days of followup, random-prompt response rates, and device loss rate. Acceptability was evaluated from an end-of-trial questionnaire. Sociodemographic, behavioral, clinical, and trial characteristics were evaluated as correlates of weekly random-prompt response rates ≥80% using logistic regression with generalized estimating equations. Results. Study participants were a median of 48.5 years old, 90% African American, 52% male, and 59% HIV-infected with limited income and educational attainment. During a median followup of 28 days, 78% of 11,181 random-prompts delivered were answered (mean of 2.8 responses daily), while 2,798 participant-initiated events were reported (30% drug use events; 70% craving events). Self-reported acceptability to study procedures was uniformly favorable. Device loss was rare (only 1 lost device every 190 person-days of observation). Higher educational attainment was consistently associated with a higher response rate to random-prompts, while an association of HIV infection with lower

  15. From computation to black holes and space-time foam.

    PubMed

    Ng, Y J

    2001-04-01

    We show that quantum mechanics and general relativity limit the speed nu of a simple computer (such as a black hole) and its memory space I to I(nu2) less, similar(t(-2))P, where t(P) is the Planck time. We also show that the lifetime of a simple clock and its precision are similarly limited. These bounds and the holographic bound originate from the same physics that governs the quantum fluctuations of space-time. We further show that these physical bounds are realized for black holes, yielding the correct Hawking black hole lifetime, and that space-time undergoes much larger quantum fluctuations than conventional wisdom claims-almost within range of detection with modern gravitational-wave interferometers.

  16. Run-time statistical estimation of task execution times for heterogeneous distributed computing

    SciTech Connect

    Iverson, M.A.; Oezguener, F.; Follen, G.J.

    1996-12-31

    In this paper, an efficient, run-time, statistical scheme for estimating the execution time of a task is presented, in order to facilitate run-time matching and scheduling in a distributed heterogeneous computing environment. This scheme is based upon a nonparametric regression technique, where the execution time estimate for a task is computed from past observations. Furthermore, this technique is able to compensate for different parameters upon which the execution time depends, and does not require any knowledge of the architecture of the target machine. It is also able to make accurate predictions when erroneous data is present in the set of observations, and has been experimentally shown to produce estimates with very low error even with few past values from which to calculate a new estimate.

  17. NNSA?s Computing Strategy, Acquisition Plan, and Basis for Computing Time Allocation

    SciTech Connect

    Nikkel, D J

    2009-07-21

    This report is in response to the Omnibus Appropriations Act, 2009 (H.R. 1105; Public Law 111-8) in its funding of the National Nuclear Security Administration's (NNSA) Advanced Simulation and Computing (ASC) Program. This bill called for a report on ASC's plans for computing and platform acquisition strategy in support of stockpile stewardship. Computer simulation is essential to the stewardship of the nation's nuclear stockpile. Annual certification of the country's stockpile systems, Significant Finding Investigations (SFIs), and execution of Life Extension Programs (LEPs) are dependent on simulations employing the advanced ASC tools developed over the past decade plus; indeed, without these tools, certification would not be possible without a return to nuclear testing. ASC is an integrated program involving investments in computer hardware (platforms and computing centers), software environments, integrated design codes and physical models for these codes, and validation methodologies. The significant progress ASC has made in the past derives from its focus on mission and from its strategy of balancing support across the key investment areas necessary for success. All these investment areas must be sustained for ASC to adequately support current stockpile stewardship mission needs and to meet ever more difficult challenges as the weapons continue to age or undergo refurbishment. The appropriations bill called for this report to address three specific issues, which are responded to briefly here but are expanded upon in the subsequent document: (1) Identify how computing capability at each of the labs will specifically contribute to stockpile stewardship goals, and on what basis computing time will be allocated to achieve the goal of a balanced program among the labs. (2) Explain the NNSA's acquisition strategy for capacity and capability of machines at each of the labs and how it will fit within the existing budget constraints. (3) Identify the technical

  18. Energy and time determine scaling in biological and computer designs.

    PubMed

    Moses, Melanie; Bezerra, George; Edwards, Benjamin; Brown, James; Forrest, Stephanie

    2016-08-19

    Metabolic rate in animals and power consumption in computers are analogous quantities that scale similarly with size. We analyse vascular systems of mammals and on-chip networks of microprocessors, where natural selection and human engineering, respectively, have produced systems that minimize both energy dissipation and delivery times. Using a simple network model that simultaneously minimizes energy and time, our analysis explains empirically observed trends in the scaling of metabolic rate in mammals and power consumption and performance in microprocessors across several orders of magnitude in size. Just as the evolutionary transitions from unicellular to multicellular animals in biology are associated with shifts in metabolic scaling, our model suggests that the scaling of power and performance will change as computer designs transition to decentralized multi-core and distributed cyber-physical systems. More generally, a single energy-time minimization principle may govern the design of many complex systems that process energy, materials and information.This article is part of the themed issue 'The major synthetic evolutionary transitions'. PMID:27431524

  19. Time-scheduled delivery of computer health animations: "Installing" healthy habits of computer use.

    PubMed

    Wang, Sy-Chyi; Chern, Jin-Yuan

    2013-06-01

    The development of modern technology brings convenience to our lives but removes physical activity from our daily routines, thereby putting our lives at risk. Extended computer use may contribute to symptoms such as visual impairment and musculoskeletal disorders. To help reduce the risk of physical inactivity and promote healthier computer use, this study developed a time-scheduled delivery of health-related animations for users sitting in front of computers for prolonged periods. In addition, we examined the effects that the program had on the computer-related health behavior intentions and actions of participants. Two waves of questionnaires were implemented for data collection before and after intervention. The results showed that the animation program indeed had a positive effect on participants' healthy computer use actions in terms of breathtaking, body massages, and body stretches. It also helped to bridge the intention-action gap of the health behaviors. The development and evaluation were documented, and users' experiences/suggestions were discussed at the end. PMID:23715211

  20. Time-scheduled delivery of computer health animations: "Installing" healthy habits of computer use.

    PubMed

    Wang, Sy-Chyi; Chern, Jin-Yuan

    2013-06-01

    The development of modern technology brings convenience to our lives but removes physical activity from our daily routines, thereby putting our lives at risk. Extended computer use may contribute to symptoms such as visual impairment and musculoskeletal disorders. To help reduce the risk of physical inactivity and promote healthier computer use, this study developed a time-scheduled delivery of health-related animations for users sitting in front of computers for prolonged periods. In addition, we examined the effects that the program had on the computer-related health behavior intentions and actions of participants. Two waves of questionnaires were implemented for data collection before and after intervention. The results showed that the animation program indeed had a positive effect on participants' healthy computer use actions in terms of breathtaking, body massages, and body stretches. It also helped to bridge the intention-action gap of the health behaviors. The development and evaluation were documented, and users' experiences/suggestions were discussed at the end.

  1. RighTime: A real time clock correcting program for MS-DOS-based computer systems

    NASA Technical Reports Server (NTRS)

    Becker, G. Thomas

    1993-01-01

    A computer program is described which effectively eliminates the misgivings of the DOS system clock in PC/AT-class computers. RighTime is a small, sophisticated memory-resident program that automatically corrects both the DOS system clock and the hardware 'CMOS' real time clock (RTC) in real time. RighTime learns what corrections are required without operator interaction beyond the occasional accurate time set. Both warm (power on) and cool (power off) errors are corrected, usually yielding better than one part per million accuracy in the typical desktop computer with no additional hardware, and RighTime increases the system clock resolution from approximately 0.0549 second to 0.01 second. Program tools are also available which allow visualization of RighTime's actions, verification of its performance, display of its history log, and which provide data for graphing of the system clock behavior. The program has found application in a wide variety of industries, including astronomy, satellite tracking, communications, broadcasting, transportation, public utilities, manufacturing, medicine, and the military.

  2. 29 CFR 4000.43 - How do I compute a time period?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 9 2011-07-01 2011-07-01 false How do I compute a time period? 4000.43 Section 4000.43..., ISSUANCE, COMPUTATION OF TIME, AND RECORD RETENTION Computation of Time § 4000.43 How do I compute a time... backwards. Suppose you are required to file an advance notice of reportable event for a transaction that...

  3. 29 CFR 4000.43 - How do I compute a time period?

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 9 2014-07-01 2014-07-01 false How do I compute a time period? 4000.43 Section 4000.43..., ISSUANCE, COMPUTATION OF TIME, AND RECORD RETENTION Computation of Time § 4000.43 How do I compute a time... backwards. Suppose you are required to file an advance notice of reportable event for a transaction that...

  4. Predicting Cloud Computing Technology Adoption by Organizations: An Empirical Integration of Technology Acceptance Model and Theory of Planned Behavior

    ERIC Educational Resources Information Center

    Ekufu, ThankGod K.

    2012-01-01

    Organizations are finding it difficult in today's economy to implement the vast information technology infrastructure required to effectively conduct their business operations. Despite the fact that some of these organizations are leveraging on the computational powers and the cost-saving benefits of computing on the Internet cloud, others…

  5. Students Perception towards the Implementation of Computer Graphics Technology in Class via Unified Theory of Acceptance and Use of Technology (UTAUT) Model

    NASA Astrophysics Data System (ADS)

    Binti Shamsuddin, Norsila

    Technology advancement and development in a higher learning institution is a chance for students to be motivated to learn in depth in the information technology areas. Students should take hold of the opportunity to blend their skills towards these technologies as preparation for them when graduating. The curriculum itself can rise up the students' interest and persuade them to be directly involved in the evolvement of the technology. The aim of this study is to see how deep is the students' involvement as well as their acceptance towards the adoption of the technology used in Computer Graphics and Image Processing subjects. The study will be towards the Bachelor students in Faculty of Industrial Information Technology (FIIT), Universiti Industri Selangor (UNISEL); Bac. In Multimedia Industry, BSc. Computer Science and BSc. Computer Science (Software Engineering). This study utilizes the new Unified Theory of Acceptance and Use of Technology (UTAUT) to further validate the model and enhance our understanding of the adoption of Computer Graphics and Image Processing Technologies. Four (4) out of eight (8) independent factors in UTAUT will be studied towards the dependent factor.

  6. A computer program for the estimation of time of death.

    PubMed

    Lynnerup, N

    1993-07-01

    In the 1960s Marshall and Hoare presented a "Standard Cooling Curve" based on their mathematical analyses on the postmortem cooling of bodies. Although fairly accurate under standard conditions, the "curve" or formula is based on the assumption that the ambience temperature is constant and that the temperature at death is known. Also, Marshall and Hoare's formula expresses the temperature as a function of time, and not vice versa, the latter being the problem most often encountered by forensic scientists. A simple BASIC program that enables solving of Marshall and Hoare's equation for the postmortem cooling of bodies is presented. It is proposed that by having a computer program that solves the equation, giving the length of the cooling period in response to a certain rectal temperature, and which allows easy comparison of multiple solutions, the uncertainties related to ambience temperature and temperature at death can be quantified, substantiating estimations of time of death.

  7. Computer Program Recognizes Patterns in Time-Series Data

    NASA Technical Reports Server (NTRS)

    Hand, Charles

    2003-01-01

    A computer program recognizes selected patterns in time-series data like digitized samples of seismic or electrophysiological signals. The program implements an artificial neural network (ANN) and a set of N clocks for the purpose of determining whether N or more instances of a certain waveform, W, occur within a given time interval, T. The ANN must be trained to recognize W in the incoming stream of data. The first time the ANN recognizes W, it sets clock 1 to count down from T to zero; the second time it recognizes W, it sets clock 2 to count down from T to zero, and so forth through the Nth instance. On the N + 1st instance, the cycle is repeated, starting with clock 1. If any clock has not reached zero when it is reset, then N instances of W have been detected within time T, and the program so indicates. The program can readily be encoded in a field-programmable gate array or an application-specific integrated circuit that could be used, for example, to detect electroencephalographic or electrocardiographic waveforms indicative of epileptic seizures or heart attacks, respectively.

  8. The Arrow of Time through the Lens of Computing

    NASA Astrophysics Data System (ADS)

    Palem, Krishna V.

    The concepts of temporal logic were introduced by Amir Pnueli [1] into the realm of computer science in general and programs in particular, to great effect. Given a program specification, a crucial element of reasoning through temporal logic is our ability to assert that one program event occurs before or after the other, with an order intuitively rooted in our notion of "time". In the realm of temporal logic, such assertions are abstracted as pure mathematical facts. An alternative is to consider the physical realization by executing the specified program through, for example, a microprocessor-based system. In such a case, a mechanism is used to ensure that the desired temporal relationships from the program specification are obeyed, and quite often this mechanism takes the form of a clock. In physical instantiations however clocks and similar mechanisms have an associated energy cost. They are guided by the laws of physics in general and thermodynamics in particular, with which the arrow of time and the associated irreversibility are intimately intertwined. Viewed through this lens, a key question arises of whether the need for ensuring that the temporal norms needed for program correctness accrue an inevitable energy cost. In this paper, I sketch some of the intricacies underlying this question. I will hint at the subtle interactions between models of computing, time as it is represented in them, and the associated thermodynamic cost. In his early work, Amir relied as much on the philosophy of reasoning about time [2-4] as on the technical intricacies of mathematical logic. In recognition of the richness of his intellectual endeavor, I have developed this exposition in a philosophical style mimicking that of the ancient greek philosopher Zeno [5,6].

  9. Accessible high performance computing solutions for near real-time image processing for time critical applications

    NASA Astrophysics Data System (ADS)

    Bielski, Conrad; Lemoine, Guido; Syryczynski, Jacek

    2009-09-01

    High Performance Computing (HPC) hardware solutions such as grid computing and General Processing on a Graphics Processing Unit (GPGPU) are now accessible to users with general computing needs. Grid computing infrastructures in the form of computing clusters or blades are becoming common place and GPGPU solutions that leverage the processing power of the video card are quickly being integrated into personal workstations. Our interest in these HPC technologies stems from the need to produce near real-time maps from a combination of pre- and post-event satellite imagery in support of post-disaster management. Faster processing provides a twofold gain in this situation: 1. critical information can be provided faster and 2. more elaborate automated processing can be performed prior to providing the critical information. In our particular case, we test the use of the PANTEX index which is based on analysis of image textural measures extracted using anisotropic, rotation-invariant GLCM statistics. The use of this index, applied in a moving window, has been shown to successfully identify built-up areas in remotely sensed imagery. Built-up index image masks are important input to the structuring of damage assessment interpretation because they help optimise the workload. The performance of computing the PANTEX workflow is compared on two different HPC hardware architectures: (1) a blade server with 4 blades, each having dual quad-core CPUs and (2) a CUDA enabled GPU workstation. The reference platform is a dual CPU-quad core workstation and the PANTEX workflow total computing time is measured. Furthermore, as part of a qualitative evaluation, the differences in setting up and configuring various hardware solutions and the related software coding effort is presented.

  10. Computer Therapy for the Anxiety and Depressive Disorders Is Effective, Acceptable and Practical Health Care: A Meta-Analysis

    PubMed Central

    Andrews, Gavin; Cuijpers, Pim; Craske, Michelle G.; McEvoy, Peter; Titov, Nickolai

    2010-01-01

    Background Depression and anxiety disorders are common and treatable with cognitive behavior therapy (CBT), but access to this therapy is limited. Objective Review evidence that computerized CBT for the anxiety and depressive disorders is acceptable to patients and effective in the short and longer term. Method Systematic reviews and data bases were searched for randomized controlled trials of computerized cognitive behavior therapy versus a treatment or control condition in people who met diagnostic criteria for major depression, panic disorder, social phobia or generalized anxiety disorder. Number randomized, superiority of treatment versus control (Hedges g) on primary outcome measure, risk of bias, length of follow up, patient adherence and satisfaction were extracted. Principal Findings 22 studies of comparisons with a control group were identified. The mean effect size superiority was 0.88 (NNT 2.13), and the benefit was evident across all four disorders. Improvement from computerized CBT was maintained for a median of 26 weeks follow-up. Acceptability, as indicated by adherence and satisfaction, was good. Research probity was good and bias risk low. Effect sizes were non-significantly higher in comparisons with waitlist than with active treatment control conditions. Five studies comparing computerized CBT with traditional face-to-face CBT were identified, and both modes of treatment appeared equally beneficial. Conclusions Computerized CBT for anxiety and depressive disorders, especially via the internet, has the capacity to provide effective acceptable and practical health care for those who might otherwise remain untreated. Trial Registration Australian New Zealand Clinical Trials Registry ACTRN12610000030077 PMID:20967242

  11. Multiscale Methods, Parallel Computation, and Neural Networks for Real-Time Computer Vision.

    NASA Astrophysics Data System (ADS)

    Battiti, Roberto

    1990-01-01

    This thesis presents new algorithms for low and intermediate level computer vision. The guiding ideas in the presented approach are those of hierarchical and adaptive processing, concurrent computation, and supervised learning. Processing of the visual data at different resolutions is used not only to reduce the amount of computation necessary to reach the fixed point, but also to produce a more accurate estimation of the desired parameters. The presented adaptive multiple scale technique is applied to the problem of motion field estimation. Different parts of the image are analyzed at a resolution that is chosen in order to minimize the error in the coefficients of the differential equations to be solved. Tests with video-acquired images show that velocity estimation is more accurate over a wide range of motion with respect to the homogeneous scheme. In some cases introduction of explicit discontinuities coupled to the continuous variables can be used to avoid propagation of visual information from areas corresponding to objects with different physical and/or kinematic properties. The human visual system uses concurrent computation in order to process the vast amount of visual data in "real -time." Although with different technological constraints, parallel computation can be used efficiently for computer vision. All the presented algorithms have been implemented on medium grain distributed memory multicomputers with a speed-up approximately proportional to the number of processors used. A simple two-dimensional domain decomposition assigns regions of the multiresolution pyramid to the different processors. The inter-processor communication needed during the solution process is proportional to the linear dimension of the assigned domain, so that efficiency is close to 100% if a large region is assigned to each processor. Finally, learning algorithms are shown to be a viable technique to engineer computer vision systems for different applications starting from

  12. Groundwater travel time computation for two-layer islands

    NASA Astrophysics Data System (ADS)

    Ketabchi, Hamed; Mahmoodzadeh, Davood; Ataie-Ashtiani, Behzad

    2016-06-01

    A closed-form analytical computation of groundwater travel time (GWTT) for two-layer oceanic small island aquifers is developed assuming steady-state and sharp-interface conditions. The two-layer geology impacts on the GWTT are investigated using the developed analytical solution to achieve a greater transparency of such conceptualizations. The results demonstrate that the inclusion of geologic layering leads to large changes in the GWTT. Sensitivity analyses, using specified dimensionless parameters, are employed to assess the influences of hydraulic conductivity, recharge rate, upper layer thickness, and seawater/freshwater density difference parameters, which influence the GWTT. These evaluations reveal that the GWTT is mainly influenced by the recharge rate and the upper layer thickness compared to the other influential parameters when the typical parameter ranges are considered.

  13. The operant reserve: a computer simulation in (accelerated) real time.

    PubMed

    Catania, A Charles

    2005-05-31

    In Skinner's Reflex Reserve theory, reinforced responses added to a reserve depleted by responding. It could not handle the finding that partial reinforcement generated more responding than continuous reinforcement, but it would have worked if its growth had depended not just on the last response but also on earlier responses preceding a reinforcer, each weighted by delay. In that case, partial reinforcement generates steady states in which reserve decrements produced by responding balance increments produced when reinforcers follow responding. A computer simulation arranged schedules for responses produced with probabilities proportional to reserve size. Each response subtracted a fixed amount from the reserve and added an amount weighted by the reciprocal of the time to the next reinforcer. Simulated cumulative records and quantitative data for extinction, random-ratio, random-interval, and other schedules were consistent with those of real performances, including some effects of history. The model also simulated rapid performance transitions with changed contingencies that did not depend on molar variables or on differential reinforcement of inter-response times. The simulation can be extended to inhomogeneous contingencies by way of continua of reserves arrayed along response and time dimensions, and to concurrent performances and stimulus control by way of different reserves created for different response classes. PMID:15845312

  14. The operant reserve: a computer simulation in (accelerated) real time.

    PubMed

    Catania, A Charles

    2005-05-31

    In Skinner's Reflex Reserve theory, reinforced responses added to a reserve depleted by responding. It could not handle the finding that partial reinforcement generated more responding than continuous reinforcement, but it would have worked if its growth had depended not just on the last response but also on earlier responses preceding a reinforcer, each weighted by delay. In that case, partial reinforcement generates steady states in which reserve decrements produced by responding balance increments produced when reinforcers follow responding. A computer simulation arranged schedules for responses produced with probabilities proportional to reserve size. Each response subtracted a fixed amount from the reserve and added an amount weighted by the reciprocal of the time to the next reinforcer. Simulated cumulative records and quantitative data for extinction, random-ratio, random-interval, and other schedules were consistent with those of real performances, including some effects of history. The model also simulated rapid performance transitions with changed contingencies that did not depend on molar variables or on differential reinforcement of inter-response times. The simulation can be extended to inhomogeneous contingencies by way of continua of reserves arrayed along response and time dimensions, and to concurrent performances and stimulus control by way of different reserves created for different response classes.

  15. Computational system identification of continuous-time nonlinear systems using approximate Bayesian computation

    NASA Astrophysics Data System (ADS)

    Krishnanathan, Kirubhakaran; Anderson, Sean R.; Billings, Stephen A.; Kadirkamanathan, Visakan

    2016-11-01

    In this paper, we derive a system identification framework for continuous-time nonlinear systems, for the first time using a simulation-focused computational Bayesian approach. Simulation approaches to nonlinear system identification have been shown to outperform regression methods under certain conditions, such as non-persistently exciting inputs and fast-sampling. We use the approximate Bayesian computation (ABC) algorithm to perform simulation-based inference of model parameters. The framework has the following main advantages: (1) parameter distributions are intrinsically generated, giving the user a clear description of uncertainty, (2) the simulation approach avoids the difficult problem of estimating signal derivatives as is common with other continuous-time methods, and (3) as noted above, the simulation approach improves identification under conditions of non-persistently exciting inputs and fast-sampling. Term selection is performed by judging parameter significance using parameter distributions that are intrinsically generated as part of the ABC procedure. The results from a numerical example demonstrate that the method performs well in noisy scenarios, especially in comparison to competing techniques that rely on signal derivative estimation.

  16. 20 CFR 404.780 - Evidence of “good cause” for exceeding time limits on accepting proof of support or application...

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Evidence of âgood causeâ for exceeding time limits on accepting proof of support or application for a lump-sum death payment. 404.780 Section 404.780...- ) Evidence Other Evidence Requirements § 404.780 Evidence of “good cause” for exceeding time limits...

  17. 20 CFR 404.780 - Evidence of “good cause” for exceeding time limits on accepting proof of support or application...

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 20 Employees' Benefits 2 2011-04-01 2011-04-01 false Evidence of âgood causeâ for exceeding time limits on accepting proof of support or application for a lump-sum death payment. 404.780 Section 404.780...- ) Evidence Other Evidence Requirements § 404.780 Evidence of “good cause” for exceeding time limits...

  18. 3D Vectorial Time Domain Computational Integrated Photonics

    SciTech Connect

    Kallman, J S; Bond, T C; Koning, J M; Stowell, M L

    2007-02-16

    The design of integrated photonic structures poses considerable challenges. 3D-Time-Domain design tools are fundamental in enabling technologies such as all-optical logic, photonic bandgap sensors, THz imaging, and fast radiation diagnostics. Such technologies are essential to LLNL and WFO sponsors for a broad range of applications: encryption for communications and surveillance sensors (NSA, NAI and IDIV/PAT); high density optical interconnects for high-performance computing (ASCI); high-bandwidth instrumentation for NIF diagnostics; micro-sensor development for weapon miniaturization within the Stockpile Stewardship and DNT programs; and applications within HSO for CBNP detection devices. While there exist a number of photonics simulation tools on the market, they primarily model devices of interest to the communications industry. We saw the need to extend our previous software to match the Laboratory's unique emerging needs. These include modeling novel material effects (such as those of radiation induced carrier concentrations on refractive index) and device configurations (RadTracker bulk optics with radiation induced details, Optical Logic edge emitting lasers with lateral optical inputs). In addition we foresaw significant advantages to expanding our own internal simulation codes: parallel supercomputing could be incorporated from the start, and the simulation source code would be accessible for modification and extension. This work addressed Engineering's Simulation Technology Focus Area, specifically photonics. Problems addressed from the Engineering roadmap of the time included modeling the Auston switch (an important THz source/receiver), modeling Vertical Cavity Surface Emitting Lasers (VCSELs, which had been envisioned as part of fast radiation sensors), and multi-scale modeling of optical systems (for a variety of applications). We proposed to develop novel techniques to numerically solve the 3D multi-scale propagation problem for both the microchip

  19. Consumer Security Perceptions and the Perceived Influence on Adopting Cloud Computing: A Quantitative Study Using the Technology Acceptance Model

    ERIC Educational Resources Information Center

    Paquet, Katherine G.

    2013-01-01

    Cloud computing may provide cost benefits for organizations by eliminating the overhead costs of software, hardware, and maintenance (e.g., license renewals, upgrading software, servers and their physical storage space, administration along with funding a large IT department). In addition to the promised savings, the organization may require…

  20. Program Predicts Time Courses of Human/Computer Interactions

    NASA Technical Reports Server (NTRS)

    Vera, Alonso; Howes, Andrew

    2005-01-01

    CPM X is a computer program that predicts sequences of, and amounts of time taken by, routine actions performed by a skilled person performing a task. Unlike programs that simulate the interaction of the person with the task environment, CPM X predicts the time course of events as consequences of encoded constraints on human behavior. The constraints determine which cognitive and environmental processes can occur simultaneously and which have sequential dependencies. The input to CPM X comprises (1) a description of a task and strategy in a hierarchical description language and (2) a description of architectural constraints in the form of rules governing interactions of fundamental cognitive, perceptual, and motor operations. The output of CPM X is a Program Evaluation Review Technique (PERT) chart that presents a schedule of predicted cognitive, motor, and perceptual operators interacting with a task environment. The CPM X program allows direct, a priori prediction of skilled user performance on complex human-machine systems, providing a way to assess critical interfaces before they are deployed in mission contexts.

  1. Reducing the computational footprint for real-time BCPNN learning

    PubMed Central

    Vogginger, Bernhard; Schüffny, René; Lansner, Anders; Cederström, Love; Partzsch, Johannes; Höppner, Sebastian

    2015-01-01

    The implementation of synaptic plasticity in neural simulation or neuromorphic hardware is usually very resource-intensive, often requiring a compromise between efficiency and flexibility. A versatile, but computationally-expensive plasticity mechanism is provided by the Bayesian Confidence Propagation Neural Network (BCPNN) paradigm. Building upon Bayesian statistics, and having clear links to biological plasticity processes, the BCPNN learning rule has been applied in many fields, ranging from data classification, associative memory, reward-based learning, probabilistic inference to cortical attractor memory networks. In the spike-based version of this learning rule the pre-, postsynaptic and coincident activity is traced in three low-pass-filtering stages, requiring a total of eight state variables, whose dynamics are typically simulated with the fixed step size Euler method. We derive analytic solutions allowing an efficient event-driven implementation of this learning rule. Further speedup is achieved by first rewriting the model which reduces the number of basic arithmetic operations per update to one half, and second by using look-up tables for the frequently calculated exponential decay. Ultimately, in a typical use case, the simulation using our approach is more than one order of magnitude faster than with the fixed step size Euler method. Aiming for a small memory footprint per BCPNN synapse, we also evaluate the use of fixed-point numbers for the state variables, and assess the number of bits required to achieve same or better accuracy than with the conventional explicit Euler method. All of this will allow a real-time simulation of a reduced cortex model based on BCPNN in high performance computing. More important, with the analytic solution at hand and due to the reduced memory bandwidth, the learning rule can be efficiently implemented in dedicated or existing digital neuromorphic hardware. PMID:25657618

  2. 29 CFR 459.1 - Computation of time for filing papers.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 2 2012-07-01 2012-07-01 false Computation of time for filing papers. 459.1 Section 459.1... OF CONDUCT MISCELLANEOUS § 459.1 Computation of time for filing papers. In computing any period of... computations. When these regulations require the filing of any paper, such document must be received by...

  3. Neutron Computed Tomography Using Real-Time Neutron Radiography.

    NASA Astrophysics Data System (ADS)

    Sulcoski, Mark Francis

    Conventional neutron radiography of an object records a two-dimensional distribution of the neutron beam intensity after it has passed through an object. The neutron radiograph, whether static film or real-time, may be considered a "shadow graph" of the object. In a shadow graph, internal structures in an object may mask one another making it difficult or impossible to precisely define the internals of the object. This problem can be solved by tomographic imaging. A real-time neutron radiography facility was constructed including the capability of neutron tomography. The neutron beam was measured for total neutron flux ((1.0 (+OR-) 0.2) x 10('11) n/(m('2)-sec)), gold cadmium ratio (52 (+OR-) 3) and effective neutron temperature (83(DEGREES)C (+OR -) 8(DEGREES)C). The angular divergence or nonparallelism of the neutron beam was measured to be \\2.3(DEGREES) (+OR -) 0.1(DEGREES) thereby providing a means of quantifying the collimator effectiveness. The resolution capabilities of both static film and real-time neutron radiographs were quantified using a Fourier transform algorithm to calculate the modulation transfer function of both types of radiographs. The contrast sensitivity of both types of radiographs was measured as 3.1% for film and 4.0% for real-time radiographs. Two tomography algorithms, the simultaneous iterative reconstruction technique (SIRT) and the convolution method, were programmed on an Intellect 100 Image Processing System. The SIRT algorithm was found to be too large and slow on the Intellect 100 to produce useful tomographs. The convolution method produced results near the theoretical resolution limits for a given number of projections. A tomographic resolution of at least 1.3 mm was demonstrated using 200 projections. Computer running time for the convolution method was found to be (TURN)30 seconds for each projection used. A series of experiments were conducted using the convolution method investigating the effect of high and low pass

  4. Time-Domain Terahertz Computed Axial Tomography NDE System

    NASA Technical Reports Server (NTRS)

    Zimdars, David

    2012-01-01

    NASA has identified the need for advanced non-destructive evaluation (NDE) methods to characterize aging and durability in aircraft materials to improve the safety of the nation's airline fleet. 3D THz tomography can play a major role in detection and characterization of flaws and degradation in aircraft materials, including Kevlar-based composites and Kevlar and Zylon fabric covers for soft-shell fan containment where aging and durability issues are critical. A prototype computed tomography (CT) time-domain (TD) THz imaging system has been used to generate 3D images of several test objects including a TUFI tile (a thermal protection system tile used on the Space Shuttle and possibly the Orion or similar capsules). This TUFI tile had simulated impact damage that was located and the depth of damage determined. The CT motion control gan try was designed and constructed, and then integrated with a T-Ray 4000 control unit and motion controller to create a complete CT TD-THz imaging system prototype. A data collection software script was developed that takes multiple z-axis slices in sequence and saves the data for batch processing. The data collection software was integrated with the ability to batch process the slice data with the CT TD-THz image reconstruction software. The time required to take a single CT slice was decreased from six minutes to approximately one minute by replacing the 320 ps, 100-Hz waveform acquisition system with an 80 ps, 1,000-Hz waveform acquisition system. The TD-THZ computed tomography system was built from pre-existing commercial off-the-shelf subsystems. A CT motion control gantry was constructed from COTS components that can handle larger samples. The motion control gantry allows inspection of sample sizes of up to approximately one cubic foot (.0.03 cubic meters). The system reduced to practice a CT-TDTHz system incorporating a COTS 80- ps/l-kHz waveform scanner. The incorporation of this scanner in the system allows acquisition of 3D

  5. Assessment of wear and periacetabular osteolysis using dual energy computed tomography on a pig cadaver to identify the lowest acceptable radiation dose

    PubMed Central

    Skorpil, M.; Nowik, P.; Olivecrona, H.; Crafoord, J.; Weidenhielm, L.; Persson, A.

    2016-01-01

    Objectives Computed tomography (CT) plays an important role in evaluating wear and periacetabular osteolysis (PAO) in total hip replacements. One concern with CT is the high radiation exposure since standard pelvic CT provides approximately 3.5 millisieverts (mSv) of radiation exposure, whereas a planar radiographic examination with three projections totals approximately 0.5 mSv. The objective of this study was to evaluate the lowest acceptable radiation dose for dual-energy CT (DECT) images when measuring wear and periacetabular osteolysis in uncemented metal components. Materials and Methods A porcine pelvis with bilateral uncemented hip prostheses and with known linear wear and acetabular bone defects was examined in a third-generation multidetector DECT scanner. The examinations were performed with four different radiation levels both with and without iterative reconstruction techniques. From the high and low peak kilo voltage acquisitions, polychrmoatic images were created together with virtual monochromatic images of energies 100 kiloelectron volts (keV) and 150 keV. Results We could assess wear and PAO while substantially lowering the effective radiation dose to 0.7 mSv for a total pelvic view with an accuracy of around 0.5 mm for linear wear and 2 mm to 3 mm for PAO. Conclusion CT for detection of prosthetic wear and PAO could be used with clinically acceptable accuracy at a radiation exposure level equal to plain radiographic exposures. Cite this article: B. Sandgren, M. Skorpil, P. Nowik, H. Olivecrona, J. Crafoord, L. Weidenhielm, A. Persson. Assessment of wear and periacetabular osteolysis using dual energy computed tomography on a pig cadaver to identify the lowest acceptable radiation dose. Bone Joint Res 2016;5:307–313. DOI: 10.1302/2046-3758.57.2000566. PMID:27445358

  6. Computers for real time flight simulation: A market survey

    NASA Technical Reports Server (NTRS)

    Bekey, G. A.; Karplus, W. J.

    1977-01-01

    An extensive computer market survey was made to determine those available systems suitable for current and future flight simulation studies at Ames Research Center. The primary requirement is for the computation of relatively high frequency content (5 Hz) math models representing powered lift flight vehicles. The Rotor Systems Research Aircraft (RSRA) was used as a benchmark vehicle for computation comparison studies. The general nature of helicopter simulations and a description of the benchmark model are presented, and some of the sources of simulation difficulties are examined. A description of various applicable computer architectures is presented, along with detailed discussions of leading candidate systems and comparisons between them.

  7. 17 CFR 10.5 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... computed is to be included unless it is a Saturday, a Sunday, or a legal holiday; in which event the period runs until the end of the next day which is not a Saturday, a Sunday or a legal holiday. Intermediate Saturdays, Sundays, and legal holidays shall be excluded from the computation only when the period of...

  8. 17 CFR 10.5 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... computed is to be included unless it is a Saturday, a Sunday, or a legal holiday; in which event the period runs until the end of the next day which is not a Saturday, a Sunday or a legal holiday. Intermediate Saturdays, Sundays, and legal holidays shall be excluded from the computation only when the period of...

  9. 17 CFR 10.5 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... computed is to be included unless it is a Saturday, a Sunday, or a legal holiday; in which event the period runs until the end of the next day which is not a Saturday, a Sunday or a legal holiday. Intermediate Saturdays, Sundays, and legal holidays shall be excluded from the computation only when the period of...

  10. Use of Respiratory-Correlated Four-Dimensional Computed Tomography to Determine Acceptable Treatment Margins for Locally Advanced Pancreatic Adenocarcinoma

    SciTech Connect

    Goldstein, Seth D.; Ford, Eric C.; Duhon, Mario; McNutt, Todd; Wong, John; Herman, Joseph M.

    2010-02-01

    Purpose: Respiratory-induced excursions of locally advanced pancreatic adenocarcinoma could affect dose delivery. This study quantified tumor motion and evaluated standard treatment margins. Methods and Materials: Respiratory-correlated four-dimensional computed tomography images were obtained on 30 patients with locally advanced pancreatic adenocarcinoma; 15 of whom underwent repeat scanning before cone-down treatment. Treatment planning software was used to contour the gross tumor volume (GTV), bilateral kidneys, and biliary stent. Excursions were calculated according to the centroid of the contoured volumes. Results: The mean +- standard deviation GTV excursion in the superoinferior (SI) direction was 0.55 +- 0.23 cm; an expansion of 1.0 cm adequately accounted for the GTV motion in 97% of locally advanced pancreatic adenocarcinoma patients. Motion GTVs were generated and resulted in a 25% average volume increase compared with the static GTV. Of the 30 patients, 17 had biliary stents. The mean SI stent excursion was 0.84 +- 0.32 cm, significantly greater than the GTV motion. The xiphoid process moved an average of 0.35 +- 0.12 cm, significantly less than the GTV. The mean SI motion of the left and right kidneys was 0.65 +- 0.27 cm and 0.77 +- 0.30 cm, respectively. At repeat scanning, no significant changes were seen in the mean GTV size (p = .8) or excursion (p = .3). Conclusion: These data suggest that an asymmetric expansion of 1.0, 0.7, and 0.6 cm along the respective SI, anteroposterior, and medial-lateral directions is recommended if a respiratory-correlated four-dimensional computed tomography scan is not available to evaluate the tumor motion during treatment planning. Surrogates of tumor motion, such as biliary stents or external markers, should be used with caution.

  11. Time-dependent computational studies of flames in microgravity

    NASA Technical Reports Server (NTRS)

    Oran, Elaine S.; Kailasanath, K.

    1989-01-01

    The research performed at the Center for Reactive Flow and Dynamical Systems in the Laboratory for Computational Physics and Fluid Dynamics, at the Naval Research Laboratory, in support of the NASA Microgravity Science and Applications Program is described. The primary focus was on investigating fundamental questions concerning the propagation and extinction of premixed flames in Earth gravity and in microgravity environments. The approach was to use detailed time-dependent, multispecies, numerical models as tools to simulate flames in different gravity environments. The models include a detailed chemical kinetics mechanism consisting of elementary reactions among the eight reactive species involved in hydrogen combustion, coupled to algorithms for convection, thermal conduction, viscosity, molecular and thermal diffusion, and external forces. The external force, gravity, can be put in any direction relative to flame propagation and can have a range of values. A combination of one-dimensional and two-dimensional simulations was used to investigate the effects of curvature and dilution on ignition and propagation of flames, to help resolve fundamental questions on the existence of flammability limits when there are no external losses or buoyancy forces in the system, to understand the mechanism leading to cellular instability, and to study the effects of gravity on the transition to cellular structure. A flame in a microgravity environment can be extinguished without external losses, and the mechanism leading to cellular structure is not preferential diffusion but a thermo-diffusive instability. The simulations have also lead to a better understanding of the interactions between buoyancy forces and the processes leading to thermo-diffusive instability.

  12. Computational Modeling of Semiconductor Dynamics at Femtosecond Time Scales

    NASA Technical Reports Server (NTRS)

    Agrawal, Govind P.; Goorjian, Peter M.

    1998-01-01

    The main objective of the Joint-Research Interchange NCC2-5149 was to develop computer codes for accurate simulation of femtosecond pulse propagation in semiconductor lasers and semiconductor amplifiers [I]. The code should take into account all relevant processes such as the interband and intraband carrier relaxation mechanisms and the many-body effects arising from the Coulomb interaction among charge carriers [2]. This objective was fully accomplished. We made use of a previously developed algorithm developed at NASA Ames [3]-[5]. The new algorithm was tested on several problems of practical importance. One such problem was related to the amplification of femtosecond optical pulses in semiconductors. These results were presented in several international conferences over a period of three years. With the help of a postdoctoral fellow, we also investigated the origin of instabilities that can lead to the formation of femtosecond pulses in different kinds of lasers. We analyzed the occurrence of absolute instabilities in lasers that contain a dispersive host material with third-order nonlinearities. Starting from the Maxwell-Bloch equations, we derived general multimode equations to distinguish between convective and absolute instabilities. We find that both self-phase modulation and intensity-dependent absorption can dramatically affect the absolute stability of such lasers. In particular, the self-pulsing threshold (the so-called second laser threshold) can occur at few times the first laser threshold even in good-cavity lasers for which no self-pulsing occurs in the absence of intensity-dependent absorption. These results were presented in an international conference and published in the form of two papers.

  13. 29 CFR 22.27 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ..., Sunday, or legal holiday observed by the Federal government, in which event it includes the next business... legal holidays observed by the Federal government shall be excluded from the computation. (c) Where...

  14. 29 CFR 22.27 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ..., Sunday, or legal holiday observed by the Federal government, in which event it includes the next business... legal holidays observed by the Federal government shall be excluded from the computation. (c) Where...

  15. 20 CFR 355.27 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ..., Sunday, or legal holiday observed by the Federal government, in which event it includes the next business... legal holidays observed by the Federal government shall be excluded from the computation. (c) Where...

  16. 29 CFR 22.27 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ..., Sunday, or legal holiday observed by the Federal government, in which event it includes the next business... legal holidays observed by the Federal government shall be excluded from the computation. (c) Where...

  17. 21 CFR 17.30 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... day of the period, unless either such day is a Saturday, Sunday, or Federal holiday, in which event..., intermediate Saturdays, Sundays, and Federal holidays shall be excluded from the computation. (c) When...

  18. 21 CFR 17.30 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... day of the period, unless either such day is a Saturday, Sunday, or Federal holiday, in which event..., intermediate Saturdays, Sundays, and Federal holidays shall be excluded from the computation. (c) When...

  19. 21 CFR 17.30 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... day of the period, unless either such day is a Saturday, Sunday, or Federal holiday, in which event..., intermediate Saturdays, Sundays, and Federal holidays shall be excluded from the computation. (c) When...

  20. 49 CFR 821.10 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... so computed is to be included unless it is a Saturday, Sunday or legal holiday for the Board, in... holiday. In all cases, Saturdays, Sundays and legal holidays for the Board shall be included in...

  1. 17 CFR 171.4 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... day of the period so computed is to be included unless it is a Saturday, a Sunday, or a legal holiday... Sunday, or a legal holiday. Intermediate Saturdays, Sundays, and legal holidays shall be included in...

  2. 17 CFR 171.4 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... day of the period so computed is to be included unless it is a Saturday, a Sunday, or a legal holiday... Sunday, or a legal holiday. Intermediate Saturdays, Sundays, and legal holidays shall be included in...

  3. 29 CFR 22.27 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ..., Sunday, or legal holiday observed by the Federal government, in which event it includes the next business... legal holidays observed by the Federal government shall be excluded from the computation. (c) Where...

  4. 45 CFR 79.27 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... the period, unless it is a Saturday, Sunday, or legal holiday observed by the Federal government, in... holidays observed by the Federal government shall be excluded from the computation. (c) Where a...

  5. Simple and Time-saving Computer Programs for Chairside Assistants.

    ERIC Educational Resources Information Center

    Birn, Herluf; And Others

    1989-01-01

    A study to test the hypothesis that computer assisted instruction used at low cognitive levels is as effective and motivating as conventional teaching, while requiring fewer teacher resources is described. (Author/MLW)

  6. Time independent universal computing with spin chains: quantum plinko machine

    NASA Astrophysics Data System (ADS)

    Thompson, K. F.; Gokler, C.; Lloyd, S.; Shor, P. W.

    2016-07-01

    We present a scheme for universal quantum computing using XY Heisenberg spin chains. Information is encoded into packets propagating down these chains, and they interact with each other to perform universal quantum computation. A circuit using g gate blocks on m qubits can be encoded into chains of length O({g}3+δ {m}3+δ ) for all δ \\gt 0 with vanishingly small error.

  7. Comparison between Utsu's and Vere-Jones' aftershocks model by means of a computer simulation based on the acceptance-rejection sampling of von Neumann

    NASA Astrophysics Data System (ADS)

    Reyes, J.; Morales-Esteban, A.; González, E.; Martínez-Álvarez, F.

    2016-07-01

    In this research, a new algorithm for generating a stochastic earthquake catalog is presented. The algorithm is based on the acceptance-rejection sampling of von Neumann. The result is a computer simulation of earthquakes based on the calculated statistical properties of each zone. Vere-Jones states that an earthquake sequence can be modeled as a series of random events. This is the model used in the proposed simulation. Contrariwise, Utsu indicates that the mainshocks are special geophysical events. The algorithm has been applied to zones of Chile, China, Spain, Japan, and the USA. This allows classifying the zones according to Vere-Jones' or Utsu's model. The results have been quantified relating the mainshock with the largest aftershock within the next 5 days (which has been named as Bath event). The results show that some zones fit Utsu's model and others Vere-Jones'. Finally, the fraction of seismic events that satisfy certain properties of magnitude and occurrence is analyzed.

  8. Time-dependent Computational Studies of Premixed Flames in Microgravity

    NASA Technical Reports Server (NTRS)

    Kailasanath, K.; Patnaik, Gopal; Oran, Elaine S.

    1993-01-01

    This report describes the research performed at the Center for Reactive Flow and Dynamical Systems in the Laboratory for Computational Physics and Fluid Dynamics, at the Naval Research Laboratory, in support of NASA Microgravity Science and Applications Program. The primary focus of this research is on investigating fundamental questions concerning the propagation and extinction of premixed flames in earth gravity and in microgravity environments. Our approach is to use detailed time-dependent, multispecies, numerical models as tools to simulate flames in different gravity environments. The models include a detailed chemical kinetics mechanism consisting of elementary reactions among the eight reactive species involved in hydrogen combustion, coupled to algorithms for convection, thermal conduction, viscosity, molecular and thermal diffusion, and external forces. The external force, gravity, can be put in any direction relative to flame propagation and can have a range of values. Recently more advanced wall boundary conditions such as isothermal and no-slip have been added to the model. This enables the simulation of flames propagating in more practical systems than before. We have used the numerical simulations to investigate the effects of heat losses and buoyancy forces on the structure and stability of flames, to help resolve fundamental questions on the existence of flammability limits when there are no external losses or buoyancy forces in the system, to understand the interaction between the various processes leading to flame instabilities and extinguishment, and to study the dynamics of cell formation and splitting. Our studies have been able to bring out the differences between upward- and downward-propagating flames and predict the zero-gravity behavior of these flames. The simulations have also highlighted the dominant role of wall heat losses in the case of downward-propagating flames. The simulations have been able to qualitatively predict the

  9. 5 CFR 2429.21 - Computation of time for filing papers.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Computation of time for filing papers... REQUIREMENTS General Requirements § 2429.21 Computation of time for filing papers. (a) In computing any period... § 2429.23(a) of this part, when this subchapter requires the filing of any paper with the Authority,...

  10. Acceptability of BCG vaccination.

    PubMed

    Mande, R

    1977-01-01

    The acceptability of BCG vaccination varies a great deal according to the country and to the period when the vaccine is given. The incidence of complications has not always a direct influence on this acceptability, which depends, for a very large part, on the risk of tuberculosis in a given country at a given time.

  11. A Computer in the Classroom: The Time Is Right.

    ERIC Educational Resources Information Center

    Kraines, David P.; Smith, David A.

    1988-01-01

    The goal was to make the "super blackboard" and "super calculator" capabilities of the computer routinely available to instructors in undergraduate mathematics courses. A good approximation to that goal is described in terms of hardware, display, physical setup, instructors, and software. Alternate solutions and other considerations are included.…

  12. 11 CFR 111.2 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... is a Saturday, a Sunday, or a legal holiday. As used in this section, the term legal holiday includes..., Thanksgiving Day, Christmas Day, and any other day appointed as a holiday for employees of the United States by..., Sundays, and legal holidays shall be excluded in the computation. (c) Special rule for service by...

  13. 30 CFR 700.15 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Saturday, Sunday, or legal holiday on which the regulatory authority is not open for business, in which event the period runs until the end of the next day which is not a Saturday, Sunday, or legal holiday. (c) Intermediate Saturdays, Sundays, and legal holidays are excluded from the computation when...

  14. 30 CFR 700.15 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Saturday, Sunday, or legal holiday on which the regulatory authority is not open for business, in which event the period runs until the end of the next day which is not a Saturday, Sunday, or legal holiday. (c) Intermediate Saturdays, Sundays, and legal holidays are excluded from the computation when...

  15. 30 CFR 700.15 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Saturday, Sunday, or legal holiday on which the regulatory authority is not open for business, in which event the period runs until the end of the next day which is not a Saturday, Sunday, or legal holiday. (c) Intermediate Saturdays, Sundays, and legal holidays are excluded from the computation when...

  16. 30 CFR 700.15 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Saturday, Sunday, or legal holiday on which the regulatory authority is not open for business, in which event the period runs until the end of the next day which is not a Saturday, Sunday, or legal holiday. (c) Intermediate Saturdays, Sundays, and legal holidays are excluded from the computation when...

  17. 40 CFR 96.207 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS FOR STATE IMPLEMENTATION PLANS CAIR SO2... period scheduled, under the CAIR SO2 Trading Program, to begin on the occurrence of an act or event shall... the CAIR SO2 Trading Program, to begin before the occurrence of an act or event shall be computed...

  18. 40 CFR 96.207 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS FOR STATE IMPLEMENTATION PLANS CAIR SO2... period scheduled, under the CAIR SO2 Trading Program, to begin on the occurrence of an act or event shall... the CAIR SO2 Trading Program, to begin before the occurrence of an act or event shall be computed...

  19. 40 CFR 96.207 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS FOR STATE IMPLEMENTATION PLANS CAIR SO2... period scheduled, under the CAIR SO2 Trading Program, to begin on the occurrence of an act or event shall... the CAIR SO2 Trading Program, to begin before the occurrence of an act or event shall be computed...

  20. Computation of finite-time Lyapunov exponents from time-resolved particle image velocimetry data

    NASA Astrophysics Data System (ADS)

    Raben, Samuel G.; Ross, Shane D.; Vlachos, Pavlos P.

    2014-01-01

    This work presents two new methods for computing finite-time Lyapunov exponents (FTLEs) from noisy spatiotemporally resolved experimentally measured image data of the type used for particle image velocimetry (PIV) or particle tracking velocimetry (PTV). These new approaches are based on the simple insight that the particle images recorded during PIV experiments represent Lagrangian flow tracers whose trajectories lend themselves to the direct computation of flow maps, and related quantities such as flow map gradients and FTLEs. We show that using this idea we can improve the reliability and accuracy of FTLE calculation through the use of either direct pathline flow map (PFM) calculation, where individual particle pathlines over a fixed period of time are used to determine the flow map, or particle tracking flow map compilation (FMC), where instantaneous tracking results are used to estimate small snapshots of the flow map which are then compiled to describe the complete flow map. Comparisons of the traditional velocity field integration (VFI) method for computing FTLE fields with these new methods show that FMC produces significantly more accurate estimates of the FTLE field for both synthetic data and experimental data especially in cases where the particle number density is low. This is because the VFI estimates particle motion while PTV directly measures particle motion and therefore generates a more accurate flow map. Overall, our results suggest that VFI is not always a reliable approach when applied to noisy experimental PIV data. For cases where particle loss between frames is minimal, the PFM can also produce better results, but the final field is susceptible to error due to the unstructured nature of the raw flow maps. When comparing the ability to match the true separatrix of a flow, FMC is shown to be a far superior method. The separatrix from FMC has an 80 % overlap with the true solution as compared to approximately 25 % for the PFM and only 1 % for

  1. 15 CFR 971.805 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... ENVIRONMENTAL DATA SERVICE DEEP SEABED MINING REGULATIONS FOR COMMERCIAL RECOVERY PERMITS Miscellaneous § 971... part or 15 CFR part 970, but when a time period expires on any of these days, that time period will...

  2. 15 CFR 971.805 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... ENVIRONMENTAL DATA SERVICE DEEP SEABED MINING REGULATIONS FOR COMMERCIAL RECOVERY PERMITS Miscellaneous § 971... part or 15 CFR part 970, but when a time period expires on any of these days, that time period will...

  3. 15 CFR 971.805 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... ENVIRONMENTAL DATA SERVICE DEEP SEABED MINING REGULATIONS FOR COMMERCIAL RECOVERY PERMITS Miscellaneous § 971... part or 15 CFR part 970, but when a time period expires on any of these days, that time period will...

  4. 15 CFR 971.805 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... ENVIRONMENTAL DATA SERVICE DEEP SEABED MINING REGULATIONS FOR COMMERCIAL RECOVERY PERMITS Miscellaneous § 971... part or 15 CFR part 970, but when a time period expires on any of these days, that time period will...

  5. 15 CFR 971.805 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... ENVIRONMENTAL DATA SERVICE DEEP SEABED MINING REGULATIONS FOR COMMERCIAL RECOVERY PERMITS Miscellaneous § 971... part or 15 CFR part 970, but when a time period expires on any of these days, that time period will...

  6. Patients' Perspectives on Wait Times and the Referral-Consultation Process While Attending a Tertiary Diabetes and Endocrinology Centre: Is Econsultation an Acceptable Option?

    PubMed

    Keely, Erin; Traczyk, Lara; Liddy, Clare

    2015-08-01

    The goal of this study was to establish patients' perspectives on the acceptability of wait times, the impact of wait times on their health and the possibility of using electronic consultations (eConsultations) to avoid visits to specialists. A 2-stage patient survey (self-administered and with a follow-up telephone call) and a chart audit was conducted on a sequential sample of patients attending their initial consultations in a tertiary diabetes and endocrinology centre. Patients' perspectives on actual and ideal wait times, the impact of waiting for access, the effectiveness of the referral-consultation process and attitudes toward eConsultations as an alternative to traditional referral-consultations were collected. The study involved 101 patients (22% for diabetes, 78% for endocrinologic conditions), whose comments were collated and categorized. Of the 101 patients who completed the survey, 61 also completed telephone interviews. The average wait time was 19 weeks; the median 10 weeks. More than 30% of patients waited longer than 6 months and 6% waited longer than 1 year. Overall, 90% of patients thought that the maximum wait time should be less than 3 months. While waiting, 58% of patients worried about a serious undiagnosed disease, 30% found their symptoms had affected their daily activities and 24% had to miss work or school due to symptoms. Of the patients, 46% considered eConsultation a viable alternative to face-to-face visits. Excessive wait times for specialist care remain barriers and have negative impacts on patients. Wait times significantly exceeded times patients considered acceptable. eConsultations provide acceptable alternatives for many patients, and they reduced the number of patients requiring traditional consultations.

  7. Fault recovery for real-time, multi-tasking computer system

    NASA Technical Reports Server (NTRS)

    Hess, Richard (Inventor); Kelly, Gerald B. (Inventor); Rogers, Randy (Inventor); Stange, Kent A. (Inventor)

    2011-01-01

    System and methods for providing a recoverable real time multi-tasking computer system are disclosed. In one embodiment, a system comprises a real time computing environment, wherein the real time computing environment is adapted to execute one or more applications and wherein each application is time and space partitioned. The system further comprises a fault detection system adapted to detect one or more faults affecting the real time computing environment and a fault recovery system, wherein upon the detection of a fault the fault recovery system is adapted to restore a backup set of state variables.

  8. Water-balance uncertainty in Honduras: a limits-of-acceptability approach to model evaluation using a time-variant rating curve

    NASA Astrophysics Data System (ADS)

    Westerberg, I.; Guerrero, J.-L.; Beven, K.; Seibert, J.; Halldin, S.; Lundin, L.-C.; Xu, C.-Y.

    2009-04-01

    The climate of Central America is highly variable both spatially and temporally; extreme events like floods and droughts are recurrent phenomena posing great challenges to regional water-resources management. Scarce and low-quality hydro-meteorological data complicate hydrological modelling and few previous studies have addressed the water-balance in Honduras. In the alluvial Choluteca River, the river bed changes over time as fill and scour occur in the channel, leading to a fast-changing relation between stage and discharge and difficulties in deriving consistent rating curves. In this application of a four-parameter water-balance model, a limits-of-acceptability approach to model evaluation was used within the General Likelihood Uncertainty Estimation (GLUE) framework. The limits of acceptability were determined for discharge alone for each time step, and ideally a simulated result should always be contained within the limits. A moving-window weighted fuzzy regression of the ratings, based on estimated uncertainties in the rating-curve data, was used to derive the limits. This provided an objective way to determine the limits of acceptability and handle the non-stationarity of the rating curves. The model was then applied within GLUE and evaluated using the derived limits. Preliminary results show that the best simulations are within the limits 75-80% of the time, indicating that precipitation data and other uncertainties like model structure also have a significant effect on predictability.

  9. Quantum computing without wavefunctions: time-dependent density functional theory for universal quantum computation.

    PubMed

    Tempel, David G; Aspuru-Guzik, Alán

    2012-01-01

    We prove that the theorems of TDDFT can be extended to a class of qubit Hamiltonians that are universal for quantum computation. The theorems of TDDFT applied to universal Hamiltonians imply that single-qubit expectation values can be used as the basic variables in quantum computation and information theory, rather than wavefunctions. From a practical standpoint this opens the possibility of approximating observables of interest in quantum computations directly in terms of single-qubit quantities (i.e. as density functionals). Additionally, we also demonstrate that TDDFT provides an exact prescription for simulating universal Hamiltonians with other universal Hamiltonians that have different, and possibly easier-to-realize two-qubit interactions. This establishes the foundations of TDDFT for quantum computation and opens the possibility of developing density functionals for use in quantum algorithms.

  10. Quantum Computing Without Wavefunctions: Time-Dependent Density Functional Theory for Universal Quantum Computation

    PubMed Central

    Tempel, David G.; Aspuru-Guzik, Alán

    2012-01-01

    We prove that the theorems of TDDFT can be extended to a class of qubit Hamiltonians that are universal for quantum computation. The theorems of TDDFT applied to universal Hamiltonians imply that single-qubit expectation values can be used as the basic variables in quantum computation and information theory, rather than wavefunctions. From a practical standpoint this opens the possibility of approximating observables of interest in quantum computations directly in terms of single-qubit quantities (i.e. as density functionals). Additionally, we also demonstrate that TDDFT provides an exact prescription for simulating universal Hamiltonians with other universal Hamiltonians that have different, and possibly easier-to-realize two-qubit interactions. This establishes the foundations of TDDFT for quantum computation and opens the possibility of developing density functionals for use in quantum algorithms. PMID:22553483

  11. Computer Modeling of Real-Time Dynamic Lighting

    NASA Technical Reports Server (NTRS)

    Maida, James C.; Pace, J.; Novak, J.; Russo, Dane M. (Technical Monitor)

    2000-01-01

    Space Station tasks involve procedures that are very complex and highly dependent on the availability of visual information. In many situations, cameras are used as tools to help overcome the visual and physical restrictions associated with space flight. However, these cameras are effected by the dynamic lighting conditions of space. Training for these is conditions is necessary. The current project builds on the findings of an earlier NRA funded project, which revealed improved performance by humans when trained with computer graphics and lighting effects such as shadows and glare.

  12. 40 CFR 97.507 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... NOX Ozone Season Trading Program, to begin on the occurrence of an act or event shall begin on the day... day of any time period, under the TR NOX Ozone Season Trading Program, is not a business day, the time...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR NOX Ozone Season...

  13. 40 CFR 97.507 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... NOX Ozone Season Trading Program, to begin on the occurrence of an act or event shall begin on the day... day of any time period, under the TR NOX Ozone Season Trading Program, is not a business day, the time...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR NOX Ozone Season...

  14. 40 CFR 97.507 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... NOX Ozone Season Trading Program, to begin on the occurrence of an act or event shall begin on the day... day of any time period, under the TR NOX Ozone Season Trading Program, is not a business day, the time...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS TR NOX Ozone Season...

  15. Axisymmetric Time-Dependent Computations of Expansion Tube Flow

    NASA Technical Reports Server (NTRS)

    Wilson, Gregory J.; Arnold, James O. (Technical Monitor)

    1994-01-01

    The goal of this work is to add insight about the flow within expansion tubes by using computational fluid dynamics. This is accomplished by comparing the results of axisymmetric numerical simulations with finite-rate chemistry to data from the HYPULSE expansion tube facility which was previously the NASA Langley expansion tube. The numerical simulations begin at the opening of the primary diaphragm and compute the flow throughout the whole facility and, thus, are able to follow and assess the effect of many of the flow features created during operation of the facility. One particular issue that will be investigated is the effect of boundary layer formation in the acceleration tube on the test gas volume and test gas conditions. Both laminar and turbulent boundary layers will be implemented. The effect of momentary shock reflection off the secondary diaphragm will also be investigated. There is concern that such a reflection will stagnate the test gas and create high levels of dissociated molecules. This is particularly important in propulsion experiments where a freestream composition different from flight conditions may influence ignition and burning data. Several different models of diaphragm rupture will be implemented in order to help understand the importance of this issue.

  16. Spurious fields in time domain computations of scattering problems

    NASA Technical Reports Server (NTRS)

    Kangro, Urve; Nicolaides, Roy

    1995-01-01

    In this paper two-dimensional electromagnetic scattering problems with a time-periodic incident field are considered. The scatterer is a perfect conductor, and an artificial boundary condition is used. The large time behavior of solutions, depending on (divergence-free) initial conditions, is characterized. It turns out that in addition to the expected time-periodic solution the limiting solution may also contain a spurious stationary field. The source of the stationary field is explained and equations describing it are obtained. Several avoidance strategies are discussed, and numerical comparisons of these techniques are given.

  17. Comparison of the Explicit Timing and Interspersal Interventions: Analysis of Problem Completion Rates, Student Preference, and Teacher Acceptability

    ERIC Educational Resources Information Center

    Rhymer, Katrina N.; Morgan, Sandra K.

    2005-01-01

    Explicit timing and interspersal interventions were investigated using a within-subjects design with 45 third-grade students. A control assignment consisted of subtraction of a two digit number from a two digit number (i.e., target problem) and served as a baseline. An explicit timing assignment consisted of similar problems as those for the…

  18. Computational complexity of time-dependent density functional theory

    NASA Astrophysics Data System (ADS)

    Whitfield, J. D.; Yung, M.-H.; Tempel, D. G.; Boixo, S.; Aspuru-Guzik, A.

    2014-08-01

    Time-dependent density functional theory (TDDFT) is rapidly emerging as a premier method for solving dynamical many-body problems in physics and chemistry. The mathematical foundations of TDDFT are established through the formal existence of a fictitious non-interacting system (known as the Kohn-Sham system), which can reproduce the one-electron reduced probability density of the actual system. We build upon these works and show that on the interior of the domain of existence, the Kohn-Sham system can be efficiently obtained given the time-dependent density. We introduce a V-representability parameter which diverges at the boundary of the existence domain and serves to quantify the numerical difficulty of constructing the Kohn-Sham potential. For bounded values of V-representability, we present a polynomial time quantum algorithm to generate the time-dependent Kohn-Sham potential with controllable error bounds.

  19. 40 CFR 96.107 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS FOR STATE IMPLEMENTATION PLANS CAIR NOX... weekend or a State or Federal holiday, the time period shall be extended to the next business day....

  20. 40 CFR 307.13 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS COMPREHENSIVE ENVIRONMENTAL RESPONSE, COMPENSATION, AND... time described or allowed in this part, except as otherwise provided, the day of the event from...

  1. A strategy for reducing turnaround time in design optimization using a distributed computer system

    NASA Technical Reports Server (NTRS)

    Young, Katherine C.; Padula, Sharon L.; Rogers, James L.

    1988-01-01

    There is a need to explore methods for reducing lengthly computer turnaround or clock time associated with engineering design problems. Different strategies can be employed to reduce this turnaround time. One strategy is to run validated analysis software on a network of existing smaller computers so that portions of the computation can be done in parallel. This paper focuses on the implementation of this method using two types of problems. The first type is a traditional structural design optimization problem, which is characterized by a simple data flow and a complicated analysis. The second type of problem uses an existing computer program designed to study multilevel optimization techniques. This problem is characterized by complicated data flow and a simple analysis. The paper shows that distributed computing can be a viable means for reducing computational turnaround time for engineering design problems that lend themselves to decomposition. Parallel computing can be accomplished with a minimal cost in terms of hardware and software.

  2. Computational procedure for finite difference solution of one-dimensional heat conduction problems reduces computer time

    NASA Technical Reports Server (NTRS)

    Iida, H. T.

    1966-01-01

    Computational procedure reduces the numerical effort whenever the method of finite differences is used to solve ablation problems for which the surface recession is large relative to the initial slab thickness. The number of numerical operations required for a given maximum space mesh size is reduced.

  3. 29 CFR 2200.4 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Federal holiday, in which event the period runs until the end of the next day which is not a Saturday, Sunday, or Federal holiday. When the period of time prescribed or allowed is less than 11 days, the period shall commence on the first day which is not a Saturday, Sunday, or Federal holiday,...

  4. 43 CFR 4.803 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... day of the period, unless it is a Saturday, Sunday, or Federal legal holiday, or other nonbusiness day... holiday, or other nonbusiness day. When the period of time prescribed or allowed is 7 days or less, intermediate Saturdays, Sundays, Federal legal holidays and other nonbusiness days shall be excluded in...

  5. 49 CFR 1503.411 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... unless it is a Saturday, Sunday, a legal holiday, or a day on which the enforcement docket is officially closed. If the last day of the time period is a Saturday, Sunday, legal holiday, or a day on which the... Saturday, Sunday, legal holiday, or a day on which the enforcement docket is officially closed....

  6. 49 CFR 1503.411 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... unless it is a Saturday, Sunday, a legal holiday, or a day on which the enforcement docket is officially closed. If the last day of the time period is a Saturday, Sunday, legal holiday, or a day on which the... Saturday, Sunday, legal holiday, or a day on which the enforcement docket is officially closed....

  7. 49 CFR 1503.411 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... unless it is a Saturday, Sunday, a legal holiday, or a day on which the enforcement docket is officially closed. If the last day of the time period is a Saturday, Sunday, legal holiday, or a day on which the... Saturday, Sunday, legal holiday, or a day on which the enforcement docket is officially closed....

  8. 29 CFR 2200.4 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Federal holiday, in which event the period runs until the end of the next day which is not a Saturday, Sunday, or Federal holiday. When the period of time prescribed or allowed is less than 11 days, the period shall commence on the first day which is not a Saturday, Sunday, or Federal holiday,...

  9. 29 CFR 2200.4 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Federal holiday, in which event the period runs until the end of the next day which is not a Saturday, Sunday, or Federal holiday. When the period of time prescribed or allowed is less than 11 days, the period shall commence on the first day which is not a Saturday, Sunday, or Federal holiday,...

  10. 40 CFR 97.207 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR SO2 Trading Program General... CAIR SO2 Trading Program, to begin on the occurrence of an act or event shall begin on the day the act or event occurs. (b) Unless otherwise stated, any time period scheduled, under the CAIR SO2...

  11. 40 CFR 97.207 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR SO2 Trading Program General... CAIR SO2 Trading Program, to begin on the occurrence of an act or event shall begin on the day the act or event occurs. (b) Unless otherwise stated, any time period scheduled, under the CAIR SO2...

  12. 40 CFR 97.207 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR SO2 Trading Program General... CAIR SO2 Trading Program, to begin on the occurrence of an act or event shall begin on the day the act or event occurs. (b) Unless otherwise stated, any time period scheduled, under the CAIR SO2...

  13. 40 CFR 97.207 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR SO2 Trading Program General... CAIR SO2 Trading Program, to begin on the occurrence of an act or event shall begin on the day the act or event occurs. (b) Unless otherwise stated, any time period scheduled, under the CAIR SO2...

  14. 40 CFR 97.207 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR SO2 Trading Program General... CAIR SO2 Trading Program, to begin on the occurrence of an act or event shall begin on the day the act or event occurs. (b) Unless otherwise stated, any time period scheduled, under the CAIR SO2...

  15. 40 CFR 96.7 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS FOR STATE IMPLEMENTATION PLANS NOX Budget Trading... day of any time period, under the NOX Budget Trading Program, falls on a weekend or a State or...

  16. 5 CFR 831.107 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... of time begins to run is not included. The last day of the period is included unless it is a Saturday, a Sunday, or a legal holiday; in this event, the period runs until the end of the next day which...

  17. 40 CFR 97.307 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... stated, if the final day of any time period, under the CAIR NOX Ozone Season Trading Program, falls on a...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR NOX Ozone Season Trading... scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on the occurrence of an act or...

  18. 40 CFR 97.307 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... stated, if the final day of any time period, under the CAIR NOX Ozone Season Trading Program, falls on a...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR NOX Ozone Season Trading... scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on the occurrence of an act or...

  19. 40 CFR 97.307 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... stated, if the final day of any time period, under the CAIR NOX Ozone Season Trading Program, falls on a...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR NOX Ozone Season Trading... scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on the occurrence of an act or...

  20. 40 CFR 97.307 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... stated, if the final day of any time period, under the CAIR NOX Ozone Season Trading Program, falls on a...) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS CAIR NOX Ozone Season Trading... scheduled, under the CAIR NOX Ozone Season Trading Program, to begin on the occurrence of an act or...

  1. Computers and productivity: is it time for a reality check?

    PubMed

    Frisse, M E

    1998-01-01

    Many clinicians and administrators in academic medical centers have eagerly embraced the idea of a comprehensive computer-based patient record (CPR), and either are contemplating implementing such a system or have already begun implementing one. Most believe that CPR systems will lead to greater productivity and clinical efficiency, and ultimately to better patient outcomes at lower cost. But there is a gamble in all of this. It is possible that in some settings a CPR system's potential will not be realized because of poor implementation, poor organization, or excessive and unanticipated costs. Given the high stakes associated with CPR implementations, it is important that medical centers move more cautiously, always asking the question "What if these systems do not work?" The author of this article considers worst-case scenarios of CPR deployment as well as evidence from industry and government that undermines claims that CPR deployment will inevitably confer greater productivity and efficiency. He challenges readers to think hard about the cost-benefit ratios of both CPR systems and paper-based systems, and to commit to an institutional "bill of rights" before forging ahead with CPR deployment.

  2. Illegal road crossing behavior of pedestrians at overpass locations: Factors affecting gap acceptance, crossing times and overpass use.

    PubMed

    Demiroz, Y I; Onelcin, P; Alver, Y

    2015-07-01

    The aim of designing overpasses is to provide safe road crossings for pedestrians by helping them to avoid conflicts with motor vehicles. However, the number of pedestrians who do not use overpasses to cross the road is very high. An observational survey of illegal road crossings was conducted at four overpass locations in Izmir, Turkey to determine the crossing time, crossing speed of the pedestrians and their distance and time gap perception for safe road-crossing within 25 m of the overpasses in both directions. Crossing time is the time needed for a pedestrian to cross a particular road. Time gap is strongly related with safety margin. If a pedestrian chooses a larger time gap, then the arrival time of the oncoming vehicle to the crossing point of the pedestrian increases thus, the possibility of a collision decreases. Each overpass was observed on weekdays during peak afternoon (12.30-13.30) and evening hours (17.00-18.00). At all overpass locations 454 illegal crossings were observed. ANOVA results revealed that age had a significant effect both on safety margin and crossing time. During the observations a survey was conducted among pedestrians who completed their crossings either using the overpass or at street level within 25 m of the overpass (n=231). Factors affecting the crossing choice of pedestrians were specified in the surveys. The major part of the respondents (71.7%) indicated that time saving was the main reason for crossing at street level. Pedestrians' crossing speeds were extracted from the video recordings to observe the effect of speed limit on pedestrian behavior. As a result, at locations where the speed limit was 70 km/h, pedestrians' average crossing speed was found to be 1.60 m/s and 1.73 m/s while at locations where the speed limit was 50 km/h, pedestrians' average crossing speed was found to be 1.04 m/s and 0.97 m/s. This shows that pedestrians feel safer while crossing when the vehicle speed is low.

  3. Power Computations in Time Series Analyses for Traffic Safety Interventions

    PubMed Central

    McLeod, A. Ian; Vingilis, E. R.

    2008-01-01

    The evaluation of traffic safety interventions or other policies that can affect road safety often requires the collection of administrative time series data, such as monthly motor vehicle collision data that may be difficult and/or expensive to collect. Furthermore, since policy decisions may be based on the results found from the intervention analysis of the policy, it is important to ensure that the statistical tests have enough power, that is, that we have collected enough time series data both before and after the intervention so that a meaningful change in the series will likely be detected. In this short paper we present a simple methodology for doing this. It is expected that the methodology presented will be useful for sample size determination in a wide variety of traffic safety intervention analysis applications. Our method is illustrated with a proposed traffic safety study that was funded by NIH. PMID:18460394

  4. Time-Ordered Product Expansions for Computational Stochastic Systems Biology

    PubMed Central

    Mjolsness, Eric

    2013-01-01

    The time-ordered product framework of quantum field theory can also be used to understand salient phenomena in stochastic biochemical networks. It is used here to derive Gillespie’s Stochastic Simulation Algorithm (SSA) for chemical reaction networks; consequently, the SSA can be interpreted in terms of Feynman diagrams. It is also used here to derive other, more general simulation and parameter-learning algorithms including simulation algorithms for networks of stochastic reaction-like processes operating on parameterized objects, and also hybrid stochastic reaction/differential equation models in which systems of ordinary differ-ential equations evolve the parameters of objects that can also undergo stochastic reactions. Thus, the time-ordered product expansion (TOPE) can be used systematically to derive simulation and parameter-fitting algorithms for stochastic systems. PMID:23735739

  5. HOPE: Just-in-time Python compiler for astrophysical computations

    NASA Astrophysics Data System (ADS)

    Akeret, Joel; Gamper, Lukas; Amara, Adam; Refregier, Alexandre

    2014-11-01

    HOPE is a specialized Python just-in-time (JIT) compiler designed for numerical astrophysical applications. HOPE focuses on a subset of the language and is able to translate Python code into C++ while performing numerical optimization on mathematical expressions at runtime. To enable the JIT compilation, the user only needs to add a decorator to the function definition. By using HOPE, the user benefits from being able to write common numerical code in Python while getting the performance of compiled implementation.

  6. 14 CFR 13.85 - Filing, service and computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 1 2011-01-01 2011-01-01 false Filing, service and computation of time. 13.85 Section 13.85 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... Transportation Act § 13.85 Filing, service and computation of time. Filing and service of documents under...

  7. 14 CFR 13.85 - Filing, service and computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Filing, service and computation of time. 13.85 Section 13.85 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... Transportation Act § 13.85 Filing, service and computation of time. Filing and service of documents under...

  8. 12 CFR 516.10 - How does OTS compute time periods under this part?

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 5 2011-01-01 2011-01-01 false How does OTS compute time periods under this part? 516.10 Section 516.10 Banks and Banking OFFICE OF THRIFT SUPERVISION, DEPARTMENT OF THE TREASURY APPLICATION PROCESSING PROCEDURES § 516.10 How does OTS compute time periods under this part? In...

  9. 12 CFR 516.10 - How does OTS compute time periods under this part?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false How does OTS compute time periods under this part? 516.10 Section 516.10 Banks and Banking OFFICE OF THRIFT SUPERVISION, DEPARTMENT OF THE TREASURY APPLICATION PROCESSING PROCEDURES § 516.10 How does OTS compute time periods under this part? In...

  10. 29 CFR 4011.9 - Method and date of issuance of notice; computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Method and date of issuance of notice; computation of time... CORPORATION CERTAIN REPORTING AND DISCLOSURE REQUIREMENTS DISCLOSURE TO PARTICIPANTS § 4011.9 Method and date of issuance of notice; computation of time. (a) Method of issuance. The PBGC applies the rules...

  11. 29 CFR 4219.19 - Method and date of issuance; computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Method and date of issuance; computation of time. 4219.19... Redetermination of Withdrawal Liability Upon Mass Withdrawal § 4219.19 Method and date of issuance; computation of time. The PBGC applies the rules in subpart B of part 4000 of this chapter to determine...

  12. Mimicking time evolution within a quantum ground state: Ground-state quantum computation, cloning, and teleportation

    SciTech Connect

    Mizel, Ari

    2004-07-01

    Ground-state quantum computers mimic quantum-mechanical time evolution within the amplitudes of a time-independent quantum state. We explore the principles that constrain this mimicking. A no-cloning argument is found to impose strong restrictions. It is shown, however, that there is flexibility that can be exploited using quantum teleportation methods to improve ground-state quantum computer design.

  13. Data Acceptance Criteria for Standardized Human-Associated Fecal Source Identification Quantitative Real-Time PCR Methods

    EPA Science Inventory

    There is a growing interest in the application of human-associated fecal sourceidentification quantitative real-time PCR (qPCR) technologies for water quality management. The transition from a research tool to a standardized protocol requires a high degree of confidence in data q...

  14. Intercommunications in Real Time, Redundant, Distributed Computer System

    NASA Technical Reports Server (NTRS)

    Zanger, H.

    1980-01-01

    An investigation into the applicability of fiber optic communication techniques to real time avionic control systems, in particular the total automatic flight control system used for the VSTOL aircraft is presented. The system consists of spatially distributed microprocessors. The overall control function is partitioned to yield a unidirectional data flow between the processing elements (PE). System reliability is enhanced by the use of triple redundancy. Some general overall system specifications are listed here to provide the necessary background for the requirements of the communications system.

  15. Effects of husk and harvest time on carotenoid content and acceptability of roasted fresh cobs of orange maize hybrids

    PubMed Central

    Alamu, Oladeji E; Menkir, Abebe; Maziya-Dixon, Bussie; Olaofe, Olorunfemi

    2014-01-01

    Vitamin A deficiency (VAD) is a major public health problem in many developing countries. Orange maize is preferred as green maize and consumed roasted on the cob, especially in Nigeria. This research work was to evaluate the effects of harvest time and husk on the carotenoid contents and sensory properties of roasted orange maize hybrids. The results showed that husk (roasting forms) and harvesting time had significant effects (P ≤ 0.001) on the carotenoids and the sensory properties. There was general increase in β-carotene and provitamin A (PVA) values as the harvesting time increases. The β-carotene and PVA values for roasted orange maize hybrids with husk were higher than those for roasted without husk. Hybrid 5 had the highest β-carotene concentration and PVA value at 27 days after pollination (DAP) and 34DAP when unprocessed and roasted without husk. This information can help researchers in choosing proper roasting methods to increase the retention of high levels of β-carotene and PVA in orange maize that can be delivered to consumers through nutrition education. PMID:25493200

  16. American Recovery and Reinvestment Act of 2009. Interim Report on Customer Acceptance, Retention, and Response to Time-Based Rates from the Consumer Behavior Studies

    SciTech Connect

    Cappers, Peter; Hans, Liesel; Scheer, Richard

    2015-06-01

    Time-based rate programs1, enabled by utility investments in advanced metering infrastructure (AMI), are increasingly being considered by utilities as tools to reduce peak demand and enable customers to better manage consumption and costs. There are several customer systems that are relatively new to the marketplace and have the potential for improving the effectiveness of these programs, including in-home displays (IHDs), programmable communicating thermostats (PCTs), and web portals. Policy and decision makers are interested in more information about customer acceptance, retention, and response before moving forward with expanded deployments of AMI-enabled new rates and technologies. Under the Smart Grid Investment Grant Program (SGIG), the U.S. Department of Energy (DOE) partnered with several utilities to conduct consumer behavior studies (CBS). The goals involved applying randomized and controlled experimental designs for estimating customer responses more precisely and credibly to advance understanding of time-based rates and customer systems, and provide new information for improving program designs, implementation strategies, and evaluations. The intent was to produce more robust and credible analysis of impacts, costs, benefits, and lessons learned and assist utility and regulatory decision makers in evaluating investment opportunities involving time-based rates. To help achieve these goals, DOE developed technical guidelines to help the CBS utilities estimate customer acceptance, retention, and response more precisely.

  17. 7 CFR 1200.17 - Filing, extension of time, effective date of filing, and computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false Filing, extension of time, effective date of filing... Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS... Amend an Order § 1200.17 Filing, extension of time, effective date of filing, and computation of...

  18. Computer Response Time Measurements of Mood, Fatigue and Symptom Scale Items: Implications for Scale Response Time Uses.

    ERIC Educational Resources Information Center

    Ryman, David H.; And Others

    1988-01-01

    Describes study conducted with U.S. Marine Corps enlisted personnel to measure response time to computer-administered questionnaire items, and to evaluate how measurement of response time might be useful in various research areas. Topics addressed include mood states; the occurrence of straight lining; and experimental effects of sleep loss and…

  19. The expanded role of computers in Space Station Freedom real-time operations

    NASA Technical Reports Server (NTRS)

    Crawford, R. Paul; Cannon, Kathleen V.

    1990-01-01

    The challenges that NASA and its international partners face in their real-time operation of the Space Station Freedom necessitate an increased role on the part of computers. In building the operational concepts concerning the role of the computer, the Space Station program is using lessons learned experience from past programs, knowledge of the needs of future space programs, and technical advances in the computer industry. The computer is expected to contribute most significantly in real-time operations by forming a versatile operating architecture, a responsive operations tool set, and an environment that promotes effective and efficient utilization of Space Station Freedom resources.

  20. Accuracy and computational efficiency of real-time subspace propagation schemes for the time-dependent density functional theory

    NASA Astrophysics Data System (ADS)

    Russakoff, Arthur; Li, Yonghui; He, Shenglai; Varga, Kalman

    2016-05-01

    Time-dependent Density Functional Theory (TDDFT) has become successful for its balance of economy and accuracy. However, the application of TDDFT to large systems or long time scales remains computationally prohibitively expensive. In this paper, we investigate the numerical stability and accuracy of two subspace propagation methods to solve the time-dependent Kohn-Sham equations with finite and periodic boundary conditions. The bases considered are the Lánczos basis and the adiabatic eigenbasis. The results are compared to a benchmark fourth-order Taylor expansion of the time propagator. Our results show that it is possible to use larger time steps with the subspace methods, leading to computational speedups by a factor of 2-3 over Taylor propagation. Accuracy is found to be maintained for certain energy regimes and small time scales.

  1. An Approach to Integrate a Space-Time GIS Data Model with High Performance Computers

    SciTech Connect

    Wang, Dali; Zhao, Ziliang; Shaw, Shih-Lung

    2011-01-01

    In this paper, we describe an approach to integrate a Space-Time GIS data model on a high performance computing platform. The Space-Time GIS data model has been developed on a desktop computing environment. We use the Space-Time GIS data model to generate GIS module, which organizes a series of remote sensing data. We are in the process of porting the GIS module into an HPC environment, in which the GIS modules handle large dataset directly via parallel file system. Although it is an ongoing project, authors hope this effort can inspire further discussions on the integration of GIS on high performance computing platforms.

  2. A study of workstation computational performance for real-time flight simulation

    NASA Technical Reports Server (NTRS)

    Maddalon, Jeffrey M.; Cleveland, Jeff I., II

    1995-01-01

    With recent advances in microprocessor technology, some have suggested that modern workstations provide enough computational power to properly operate a real-time simulation. This paper presents the results of a computational benchmark, based on actual real-time flight simulation code used at Langley Research Center, which was executed on various workstation-class machines. The benchmark was executed on different machines from several companies including: CONVEX Computer Corporation, Cray Research, Digital Equipment Corporation, Hewlett-Packard, Intel, International Business Machines, Silicon Graphics, and Sun Microsystems. The machines are compared by their execution speed, computational accuracy, and porting effort. The results of this study show that the raw computational power needed for real-time simulation is now offered by workstations.

  3. Cone-beam computed tomography: Time to move from ALARA to ALADA.

    PubMed

    Jaju, Prashant P; Jaju, Sushma P

    2015-12-01

    Cone-beam computed tomography (CBCT) is routinely recommended for dental diagnosis and treatment planning. CBCT exposes patients to less radiation than does conventional CT. Still, lack of proper education among dentists and specialists is resulting in improper referral for CBCT. In addition, aiming to generate high-quality images, operators may increase the radiation dose, which can expose the patient to unnecessary risk. This letter advocates appropriate radiation dosing during CBCT to the benefit of both patients and dentists, and supports moving from the concept of "as low as reasonably achievable" (ALARA) to "as low as diagnostically acceptable" (ALADA). PMID:26730375

  4. Cone-beam computed tomography: Time to move from ALARA to ALADA

    PubMed Central

    Jaju, Sushma P.

    2015-01-01

    Cone-beam computed tomography (CBCT) is routinely recommended for dental diagnosis and treatment planning. CBCT exposes patients to less radiation than does conventional CT. Still, lack of proper education among dentists and specialists is resulting in improper referral for CBCT. In addition, aiming to generate high-quality images, operators may increase the radiation dose, which can expose the patient to unnecessary risk. This letter advocates appropriate radiation dosing during CBCT to the benefit of both patients and dentists, and supports moving from the concept of "as low as reasonably achievable" (ALARA) to "as low as diagnostically acceptable" (ALADA). PMID:26730375

  5. Online Operation Guidance of Computer System Used in Real-Time Distance Education Environment

    ERIC Educational Resources Information Center

    He, Aiguo

    2011-01-01

    Computer system is useful for improving real time and interactive distance education activities. Especially in the case that a large number of students participate in one distance lecture together and every student uses their own computer to share teaching materials or control discussions over the virtual classrooms. The problem is that within…

  6. Computer Networks for Real-Time Written Interaction in the Writing Classroom: An Annotated Bibliography.

    ERIC Educational Resources Information Center

    Peyton, Joy Kreeft

    1989-01-01

    Provides annotated citations to articles, research reports, resources guides, and a newsletter about the use of computer networks for real-time written interaction in writing classrooms. Notes that these annotations offer a broad and varied introduction to computer networking in the writing classroom. (KEH)

  7. 5 CFR 550.404 - Computation of advance payments and evacuation payments; time periods.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 5 Administrative Personnel 1 2014-01-01 2014-01-01 false Computation of advance payments and... Computation of advance payments and evacuation payments; time periods. (a) Payments shall be based on the rate... others, when applicable, shall be made before advance payments or evacuation payments are made....

  8. 5 CFR 550.404 - Computation of advance payments and evacuation payments; time periods.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 5 Administrative Personnel 1 2013-01-01 2013-01-01 false Computation of advance payments and... Computation of advance payments and evacuation payments; time periods. (a) Payments shall be based on the rate... others, when applicable, shall be made before advance payments or evacuation payments are made....

  9. Method reduces computer time for smoothing functions and derivatives through ninth order polynomials

    NASA Technical Reports Server (NTRS)

    Glauz, R. D.; Wilgus, C. A.

    1969-01-01

    Analysis presented is an efficient technique to adjust previously calculated orthogonal polynomial coefficients for an odd number of equally spaced data points. The adjusting technique derivation is for a ninth order polynomial. It reduces computer time for smoothing functions.

  10. The New Screen Time: Computers, Tablets, and Smartphones Enter the Equation

    ERIC Educational Resources Information Center

    Wiles, Bradford B.; Schachtner, Laura; Pentz, Julie L.

    2016-01-01

    Emerging technologies attract children and push parents' and caregivers' abilities to attend to their families. This article presents recommendations related to the new version of screen time, which includes time with computers, tablets, and smartphones. Recommendations are provided for screen time for very young children and those in middle and…

  11. 39 CFR 966.6 - Filing, docketing and serving documents; computation of time; representation of parties.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... business hours are between 8:15 a.m. and 4:45 p.m., eastern standard or daylight saving time as appropriate...; computation of time; representation of parties. 966.6 Section 966.6 Postal Service UNITED STATES POSTAL... time; representation of parties. (a) Filing. All documents required under this part must be filed...

  12. 39 CFR 966.6 - Filing, docketing and serving documents; computation of time; representation of parties.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... business hours are between 8:15 a.m. and 4:45 p.m., eastern standard or daylight saving time as appropriate...; computation of time; representation of parties. 966.6 Section 966.6 Postal Service UNITED STATES POSTAL... time; representation of parties. (a) Filing. All documents required under this part must be filed...

  13. 39 CFR 966.6 - Filing, docketing and serving documents; computation of time; representation of parties.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... are between 8:45 a.m. and 4:45 p.m., eastern standard or daylight saving time as appropriate during...; computation of time; representation of parties. 966.6 Section 966.6 Postal Service UNITED STATES POSTAL... time; representation of parties. (a) Filing. All documents required under this part must be filed...

  14. 39 CFR 966.6 - Filing, docketing and serving documents; computation of time; representation of parties.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... business hours are between 8:15 a.m. and 4:45 p.m., eastern standard or daylight saving time as appropriate...; computation of time; representation of parties. 966.6 Section 966.6 Postal Service UNITED STATES POSTAL... time; representation of parties. (a) Filing. All documents required under this part must be filed...

  15. 39 CFR 966.6 - Filing, docketing and serving documents; computation of time; representation of parties.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... are between 8:45 a.m. and 4:45 p.m., eastern standard or daylight saving time as appropriate during...; computation of time; representation of parties. 966.6 Section 966.6 Postal Service UNITED STATES POSTAL... time; representation of parties. (a) Filing. All documents required under this part must be filed...

  16. Decreasing Transition Times in Elementary School Classrooms: Using Computer-Assisted Instruction to Automate Intervention Components

    ERIC Educational Resources Information Center

    Hine, Jeffrey F.; Ardoin, Scott P.; Foster, Tori E.

    2015-01-01

    Research suggests that students spend a substantial amount of time transitioning between classroom activities, which may reduce time spent academically engaged. This study used an ABAB design to evaluate the effects of a computer-assisted intervention that automated intervention components previously shown to decrease transition times. We examined…

  17. Computational Methods for Stability and Control (COMSAC): The Time Has Come

    NASA Technical Reports Server (NTRS)

    Hall, Robert M.; Biedron, Robert T.; Ball, Douglas N.; Bogue, David R.; Chung, James; Green, Bradford E.; Grismer, Matthew J.; Brooks, Gregory P.; Chambers, Joseph R.

    2005-01-01

    Powerful computational fluid dynamics (CFD) tools have emerged that appear to offer significant benefits as an adjunct to the experimental methods used by the stability and control community to predict aerodynamic parameters. The decreasing costs for and increasing availability of computing hours are making these applications increasingly viable as time goes on and the cost of computing continues to drop. This paper summarizes the efforts of four organizations to utilize high-end computational fluid dynamics (CFD) tools to address the challenges of the stability and control arena. General motivation and the backdrop for these efforts will be summarized as well as examples of current applications.

  18. An Assessment of Security Vulnerabilities Comprehension of Cloud Computing Environments: A Quantitative Study Using the Unified Theory of Acceptance and Use

    ERIC Educational Resources Information Center

    Venkatesh, Vijay P.

    2013-01-01

    The current computing landscape owes its roots to the birth of hardware and software technologies from the 1940s and 1950s. Since then, the advent of mainframes, miniaturized computing, and internetworking has given rise to the now prevalent cloud computing era. In the past few months just after 2010, cloud computing adoption has picked up pace…

  19. Computation of canonical correlation and best predictable aspect of future for time series

    NASA Technical Reports Server (NTRS)

    Pourahmadi, Mohsen; Miamee, A. G.

    1989-01-01

    The canonical correlation between the (infinite) past and future of a stationary time series is shown to be the limit of the canonical correlation between the (infinite) past and (finite) future, and computation of the latter is reduced to a (generalized) eigenvalue problem involving (finite) matrices. This provides a convenient and essentially, finite-dimensional algorithm for computing canonical correlations and components of a time series. An upper bound is conjectured for the largest canonical correlation.

  20. Guidelines and Procedures for Computing Time-Series Suspended-Sediment Concentrations and Loads from In-Stream Turbidity-Sensor and Streamflow Data

    USGS Publications Warehouse

    Rasmussen, Patrick P.; Gray, John R.; Glysson, G. Douglas; Ziegler, Andrew C.

    2009-01-01

    In-stream continuous turbidity and streamflow data, calibrated with measured suspended-sediment concentration data, can be used to compute a time series of suspended-sediment concentration and load at a stream site. Development of a simple linear (ordinary least squares) regression model for computing suspended-sediment concentrations from instantaneous turbidity data is the first step in the computation process. If the model standard percentage error (MSPE) of the simple linear regression model meets a minimum criterion, this model should be used to compute a time series of suspended-sediment concentrations. Otherwise, a multiple linear regression model using paired instantaneous turbidity and streamflow data is developed and compared to the simple regression model. If the inclusion of the streamflow variable proves to be statistically significant and the uncertainty associated with the multiple regression model results in an improvement over that for the simple linear model, the turbidity-streamflow multiple linear regression model should be used to compute a suspended-sediment concentration time series. The computed concentration time series is subsequently used with its paired streamflow time series to compute suspended-sediment loads by standard U.S. Geological Survey techniques. Once an acceptable regression model is developed, it can be used to compute suspended-sediment concentration beyond the period of record used in model development with proper ongoing collection and analysis of calibration samples. Regression models to compute suspended-sediment concentrations are generally site specific and should never be considered static, but they represent a set period in a continually dynamic system in which additional data will help verify any change in sediment load, type, and source.