Science.gov

Sample records for standard three-axial tests

  1. Standards for Objective Tests

    ERIC Educational Resources Information Center

    Tristan, Agustin; Vidal, Rafael

    2007-01-01

    A new book of standards for quality of tests has been published in Spanish, filling a gap on this field. The book includes 64 standards, comments, a companion questionnaire for self-evaluation and a planning schedule; with those tools a non-expert may understand the standards, and easily follow some procedures to design or to improve a test. The…

  2. Appliance Standard Testing

    ScienceCinema

    Hogan, Kathleen; Tiemann, Gregg

    2016-08-12

    The U.S. Department of Energy’s Appliance Standards and Equipment Program tests, sets and helps enforce efficiency standards on more than 60 U.S. products. A majority of that testing is performed at the Intertek laboratory in Cortland, NY.

  3. Appliance Standard Testing

    SciTech Connect

    Hogan, Kathleen; Tiemann, Gregg

    2016-08-03

    The U.S. Department of Energy’s Appliance Standards and Equipment Program tests, sets and helps enforce efficiency standards on more than 60 U.S. products. A majority of that testing is performed at the Intertek laboratory in Cortland, NY.

  4. The Standardized Test Flap

    ERIC Educational Resources Information Center

    Rudman, Herbert C.

    1977-01-01

    Concentrates on three questions: Who are the current critics of standardized testing? What are their persistent criticisms and concerns? Which of these criticisms appear to be valid, which have some validity, and which appear to be irrational? (Author/IRT)

  5. Standard environmental test methods

    SciTech Connect

    Schafer, D R

    1983-12-01

    This guide to uniformity in testing is intended primarily as an aid to persons responsible for designing, developing, and performing environmental tests. It will also be of use to those concerned with production, evaluation, and quality control and assurance. Checklists for preparing the environmental testing portion of product specifications are included, as are copies of Process Standards covering the instrumentation, equipment, and methods for use in environmental testing of Sandia National Laboratories components. Techniques and equipment are constantly improving. This version of SC-4452 reflects current state-of-the-art and practice in environmental testing. Previously existing sections of the document have ben updated and new ones have been added, e.g., Transient Testing on Vibration Machines.

  6. Standardized Testing: Meritocracy's Crooked Yardstick.

    ERIC Educational Resources Information Center

    Sacks, Peter

    1997-01-01

    Discusses the entrenched nature of standardized testing in the educational system, the anti-testing movement and its supporting evidence, shifts in policy since 1980, current trends, the investment of publishers and test-makers in standardized testing, the true costs of standardized testing, and specifically "American" characteristics of…

  7. Standard environmental testing practices

    NASA Technical Reports Server (NTRS)

    Daniel, R.; Gregory, E.; Stoker, J.; Vanbiene, F.; Woodbury, R. C.

    1972-01-01

    Manual on procedural requirements for performing certain environmental tests on space flight equipment provides information for test equipment designers, quality control and production engineers. Contents of manual are summarized.

  8. Perils of Standardized Achievement Testing

    ERIC Educational Resources Information Center

    Haladyna, Thomas M.

    2006-01-01

    This article argues that the validity of standardized achievement test-score interpretation and use is problematic; consequently, confidence and trust in such test scores may often be unwarranted. The problem is particularly severe in high-stakes situations. This essay provides a context for understanding standardized achievement testing, then…

  9. On Standardized Testing. ERIC Digest.

    ERIC Educational Resources Information Center

    Perrone, Vito

    This ERIC Digest was adapted from the Association for Childhood Education International's (ACEI) 1991 position paper on standardized testing. Since the publication of "A Nation at Risk" in 1983, standardized testing programs have expanded greatly. Tests may be of pencil-and-paper or performance-oriented varieties. The purposes of tests…

  10. Taming the Standardized Testing Program.

    ERIC Educational Resources Information Center

    Nettleton, Aileen L.

    The city-wide standardized testing program of Madison Public Schools was reviewed by a committee of a cross-section of school system educators as part of a total effort to design a testing program more sensitive to the needs of the system. As a result, standardized testing was reduced to reading (grades 1, 2, 3, 4, 5, and 8) and mathematics (grade…

  11. Standardization of Lubricity Test.

    DTIC Science & Technology

    1987-08-01

    0.501 FV9 4-9 0.)64 0.027 0.291 *Note: Post test Profilometer traces showed surface finish of cylinders fabricated by .1 inconsistent with...Research based mi consider . ation of available toicolcl data. Additional data are being obtained to help define a recommended ocupational expoeure

  12. Why Standardized Tests Threaten Multiculturalism.

    ERIC Educational Resources Information Center

    Bigelow, Bill

    1999-01-01

    Oregon's statewide social-studies assessment (a randomized, multiple-choice maze) is part of a "democratic" national standards movement that threatens good teaching and multicultural studies. If multiculturalism's key goal is accounting for historical influences on current social realities, then Oregon's standards and tests earn a…

  13. Standardized Testing and School Accountability

    ERIC Educational Resources Information Center

    Wiliam, Dylan

    2010-01-01

    This article explores the use of standardized tests to hold schools accountable. The history of testing for accountability is reviewed, and it is shown that currently between-school differences account for less than 10% of the variance in student scores, in part because the progress of individuals is small compared to the spread of achievement…

  14. PV system testing and standards

    NASA Astrophysics Data System (ADS)

    DeBlasio, Richard

    1999-03-01

    The U.S. Department of Energy (DOE) PV Program System Performance and Engineering Project is being conducted by The National Renewable Energy Laboratory (NREL), Sandia National Laboratories (SNL), Southwest Technology Development Institute (SWTDI), and Florida Solar Energy Center (FSEC). It provides PV system, subsystem, and component-level technology-performance characterization testing; test-method development and validation; national and international consensus standards and codes development, test-facility product certification, and laboratory-accreditation program implementation; and information exchange and technical assistance to the PV community. Emphasis is placed on reducing technical and infrastructural barriers to system acceptance, reducing life-cycle cost of systems, providing systems-engineering best practices and guidelines, and leading the national effort in performance and reliability testing, and consensus standards, codes, and certification program development and implementation—thereby ensuring that PV systems meet customers' needs and expectations. A summary of project activities, accomplishments, and future plans is provided and highlighted by an overview of PV system test-procedure and standards development.

  15. Standardization Activities in TMF Test Methodologies

    NASA Technical Reports Server (NTRS)

    Verrilli, M. J.; Castelli, M. G.; Bressers, J.; Oehmke, R. L. T.

    1996-01-01

    No standard test practice currently exists for strain-controlled thermomechanical fatigue (TMF) testing. This paper discusses recent activities which lay the foundation for standardization of TMF test methods. Specifically, the paper documents the results of two interlaboratory TMF test programs, identifies key TMF symposia and workshops, and discusses efforts toward drafting a TMF standard test practice.

  16. Test 6, Test 7, and Gas Standard Analysis Results

    NASA Technical Reports Server (NTRS)

    Perez, Horacio, III

    2007-01-01

    This viewgraph presentation shows results of analyses on odor, toxic off gassing and gas standards. The topics include: 1) Statistical Analysis Definitions; 2) Odor Analysis Results NASA Standard 6001 Test 6; 3) Toxic Off gassing Analysis Results NASA Standard 6001 Test 7; and 4) Gas Standard Results NASA Standard 6001 Test 7;

  17. Standardized Testing: Implications for Minority Students.

    ERIC Educational Resources Information Center

    Griffin, Andrew H., Jr.

    The implications of standardized testing for minority students are explored. Test terminology is described in terms of objectivity, standardization, reliability, and validity. Primarily, however, the paper reviews the objectivity of standardized testing, that is, of those tests which are either norm-referenced or criterion-referenced. The use of…

  18. Design and characterization of a silicon piezoresistive three-axial force sensor for micro-flapping wing MAV applications

    NASA Astrophysics Data System (ADS)

    Zhang, Wei; Truong, Van T.; Lua, Kim B.; Kumar, A. S.; Lim, Tee Tai; Yeo, Khoon Seng; Zhou, Guangya

    2015-03-01

    This paper describes the design and electro-mechanical characterizations of a three-axial micro piezoresistive force sensor fabricated by microelectromechanical systems (MEMS) technologies. This is the first three-axial MEMS micro force sensor applied to the study of Micro Aerial Vehicle (MAV) aerodynamics. A standard dry etching fabrication process using Silicon On Insulator (SOI) wafer is employed to fabricate the multi-axis sensors. Conventional cross-beam structure is employed. There are eight piezoresistors on the beams, and each of the silicon strain gauge size is 15 μm in width, and between 400 and 500 μm in length. The Finite Element Method (FEM) analysis for confirming the piezoresistors attachment locations is performed. The miniaturized force sensor (11×11 mm2) is attached at the wing base of a micro flapping wing system (MAV, 70×30 mm2 ) by a short pillar. The sensor is designed to detect the dynamic drag force and lift force generated by a single wing under a moderate flapping frequency (5~10Hz) simultaneously. The characterizations are experimentally investigated. The sensor should be stiff enough to withstand the high inertial force (200 millinewton) and also has high resolution to detect the minimal force correctly. Measurements show that the resolution is on the order of a millinewton. High linearity and low hysteresis under normal forces and tangential forces are demonstrated by applying forces from 0 to 0.1 N. The micro flapping wing mechanism and the assembly of wing and sensor are also discussed in this paper.

  19. Benchmarking and Alignment of Standards and Testing

    ERIC Educational Resources Information Center

    Resnick, Lauren B.; Rothman, Robert; Slattery, Jean B.; Vranek, Jennifer L.

    2004-01-01

    The success of standards-based education systems depends on 2 elements: strong standards, and assessments that measure what the standards expect. States that have or adopt test-based accountability programs claim that their tests are aligned to their standards. But there has been up to now no independent methodology for checking alignment. This…

  20. The "Volvo Effect"--Questioning Standardized Tests.

    ERIC Educational Resources Information Center

    Wesson, Kenneth A.

    2001-01-01

    Questions current emphasis on standardized tests and discusses several factors about the tests that should prompt reevaluation of their usefulness. Issues discussed include: development and design of standardized tests; the correlation between test scores and socioeconomic position; the discrepancy between test designs and accurate reflection of…

  1. Alignment of Test with the Standards.

    ERIC Educational Resources Information Center

    Romberg, Thomas A.; Wilson, Linda D.

    1992-01-01

    Examined 6 widely used grade-8 standardized tests for content, required processes, and level to determine their alignment with the 5-8 NCTM "Curriculum and Evaluation Standards." Concluded that these tests inadequately covered the 5-8 standards. A follow-up study examined items from newly developed and foreign tests to demonstrate the…

  2. 40 CFR 766.10 - Test standards.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 32 2012-07-01 2012-07-01 false Test standards. 766.10 Section 766.10...-PARA-DIOXINS/DIBENZOFURANS General Provisions § 766.10 Test standards. Testing required under subpart B... submission to EPA in response to a test rule promulgated under section 4 of TSCA must adhere to the TSCA...

  3. 40 CFR 766.10 - Test standards.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 31 2011-07-01 2011-07-01 false Test standards. 766.10 Section 766.10...-PARA-DIOXINS/DIBENZOFURANS General Provisions § 766.10 Test standards. Testing required under subpart B... submission to EPA in response to a test rule promulgated under section 4 of TSCA must adhere to the TSCA...

  4. 40 CFR 766.10 - Test standards.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Test standards. 766.10 Section 766.10...-PARA-DIOXINS/DIBENZOFURANS General Provisions § 766.10 Test standards. Testing required under subpart B... submission to EPA in response to a test rule promulgated under section 4 of TSCA must adhere to the TSCA...

  5. Standard Penetration Test and Relative Density

    DTIC Science & Technology

    1971-02-01

    penetration resistan ( e of soil, an empirical relation was established between the number of blows applied in the standard pene- tration test to sand below...more to a change in the mean grain diameter than did the pene- trometer in the standard penetration test. CONC LUSIONS In the standard penetration

  6. Selecting Standardized Tests in Nursing Education.

    PubMed

    Mee, Cheryl L; Hallenbeck, Virginia J

    2015-01-01

    Nursing faculty frequently utilize or consider the use of nationally standardized tests to evaluate nursing student performance and their potential to pass the National Council Licensure Examination (NCLEX)(©) after graduation. There is little literature available to advise and guide nursing faculty in criteria to consider when selecting a standardized testing company to assess student readiness for NCLEX. The intent of this article is to share criteria to consider when evaluating a standardized test or testing program that has been gathered through an informal survey of faculty who are currently using standardized tests.

  7. 49 CFR 384.202 - Test standards.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 5 2011-10-01 2011-10-01 false Test standards. 384.202 Section 384.202... COMMERCIAL DRIVER'S LICENSE PROGRAM Minimum Standards for Substantial Compliance by States § 384.202 Test... driving skills test for the operation of a CMV in accordance with part 383 of this title....

  8. 40 CFR 766.10 - Test standards.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Test standards. 766.10 Section 766.10 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT DIBENZO-PARA-DIOXINS/DIBENZOFURANS General Provisions § 766.10 Test standards. Testing required under subpart B...

  9. The New Generation of Standardized Testing.

    ERIC Educational Resources Information Center

    Lynd, Christine

    High-stakes testing is one of the hottest topics in education today. Although most states use some form of testing, fewer than half administer tests linked to state education standards and goals, often called criterion referenced tests. Fewer still use statewide tests with high stakes for both the students enrolled in the public schools and the…

  10. Environmental Tests Of Cesium Frequency Standards

    NASA Technical Reports Server (NTRS)

    Sydnor, Richard L.; Tucker, Thomas K.; Greenhall, Charles A.; Diener, William A.; Maleki, Lutfollah

    1992-01-01

    Report describes environmental tests of cesium-beam frequency standards of United States Naval Observatory. Purpose of tests to determine effects of atmospheric temperature, relative humidity, and pressure on frequencies.

  11. Tyre contact length on dry and wet road surfaces measured by three-axial accelerometer

    NASA Astrophysics Data System (ADS)

    Matilainen, Mika; Tuononen, Ari

    2015-02-01

    We determined the tyre contact length on dry and wet roads by measuring the accelerations of the inner liner with a three-axial accelerometer. The influence of the tyre pressure, driving velocity, and tread depth on the contact length was studied in both types of road surface conditions. On dry asphalt the contact length was almost constant, regardless of the driving velocity. On wet asphalt the presence of water could be detected even at low driving velocities (e.g. 20 km/h for a worn tyre) as the contact length began to decrease from that found in the dry asphalt situation. In addition to improving the performance of active safety systems and driver warning systems, the contact length information could be beneficial for classifying and studying the aquaplaning behaviour of tyres.

  12. Three-axial Fiber Bragg Grating Strain Sensor for Volcano Monitoring

    NASA Astrophysics Data System (ADS)

    Giacomelli, Umberto; Beverini, Nicolò; Carbone, Daniele; Carelli, Giorgio; Francesconi, Francesco; Gambino, Salvatore; Maccioni, Enrico; Morganti, Mauro; Orazi, Massimo; Peluso, Rosario; Sorrentino, Fiodor

    2017-04-01

    Fiber optic and FBGs sensors have attained a large diffusion in the last years as cost-effective monitoring and diagnostic devices in civil engineering. However, in spite of their potential impact, these instruments have found very limited application in geophysics. In order to study earthquakes and volcanoes, the measurement of crustal deformation is of crucial importance. Stress and strain behaviour is among the best indicators of changes in the activity of volcanoes .. Deep bore-hole dilatometers and strainmeters have been employed for volcano monitoring. These instruments are very sensitive and reliable, but are not cost-effective and their installation requires a large effort. Fiber optic based devices offer low cost, small size, wide frequency band, easier deployment and even the possibility of creating a local network with several sensors linked in an array. We present the realization, installation and first results of a shallow-borehole (8,5 meters depth) three-axial Fiber Bragg Grating (FBG) strain sensor prototype. This sensor has been developed in the framework of the MED-SUV project and installed on Etna volcano, in the facilities of the Serra La Nave astrophysical observatory. The installation siteis about 7 Km South-West of the summit craters, at an elevation of about 1740 m. The main goal of our work is the realization of a three-axial device having a high resolution and accuracy in static and dynamic strain measurements, with special attention to the trade-off among resolution, cost and power consumption. The sensor structure and its read-out system are innovative and offer practical advantages in comparison with traditional strain meters. Here we present data collected during the first five months of operation. In particular, the very clear signals recorded in the occurrence of the Central Italy seismic event of October 30th demonstrate the performances of our device.

  13. Besting Testing Hysteria: Reasonable Preparation for Standardized Tests.

    ERIC Educational Resources Information Center

    Field, Sherry L.

    2000-01-01

    Explores the content of the Iowa Test of Basic Skills (ITBS) and describes similarities between the ITBS and the National Council for the Social Studies (NCSS) standards. Addresses three NCSS standards and how each may be represented on a standardized test. Provides eight confidence-boosting principles. (CMK)

  14. On Standardized Testing: An ACEI Position Paper

    ERIC Educational Resources Information Center

    Solley, Bobbie A.

    2007-01-01

    Following the whirlwind standards movement of the 1980s, the beginning of the 1990s ushered in an overwhelming interest in and use of testing to document students' progress. In 1991, the Association for Childhood Education International (ACEI) issued its second position paper calling for a moratorium on standardized testing in the early years of…

  15. On Standardized Testing: An ACEI Position Paper

    ERIC Educational Resources Information Center

    Solley, Bobbie A.

    2007-01-01

    Following the whirlwind standards movement of the 1980s, the beginning of the 1990s ushered in an overwhelming interest in and use of testing to document students' progress. In 1991, the Association for Childhood Education International (ACEI) issued its second position paper calling for a moratorium on standardized testing in the early years of…

  16. Identification and compensation of the temperature influences in a miniature three-axial accelerometer based on the least squares method

    NASA Astrophysics Data System (ADS)

    Grigorie, Teodor Lucian; Corcau, Ileana Jenica; Tudosie, Alexandru Nicolae

    2017-06-01

    The paper presents a way to obtain an intelligent miniaturized three-axial accelerometric sensor, based on the on-line estimation and compensation of the sensor errors generated by the environmental temperature variation. Taking into account that this error's value is a strongly nonlinear complex function of the values of environmental temperature and of the acceleration exciting the sensor, its correction may not be done off-line and it requires the presence of an additional temperature sensor. The proposed identification methodology for the error model is based on the least square method which process off-line the numerical values obtained from the accelerometer experimental testing for different values of acceleration applied to its axes of sensitivity and for different values of operating temperature. A final analysis of the error level after the compensation highlights the best variant for the matrix in the error model. In the sections of the paper are shown the results of the experimental testing of the accelerometer on all the three sensitivity axes, the identification of the error models on each axis by using the least square method, and the validation of the obtained models with experimental values. For all of the three detection channels was obtained a reduction by almost two orders of magnitude of the acceleration absolute maximum error due to environmental temperature variation.

  17. Standardized Testing: Measurement of Academic Achievement

    ERIC Educational Resources Information Center

    Weaver, Keshia

    2011-01-01

    Standardized testing has been a very important issue in education today. Many schools use the testing score to determine whether a child should continue to the next grade level. As we review the methods teachers use to prepare students for these types of tests, the amount of instruction time utilized to cover test materials, and the level of…

  18. 40 CFR 799.10 - Test standards.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 32 2014-07-01 2014-07-01 false Test standards. 799.10 Section 799.10...) IDENTIFICATION OF SPECIFIC CHEMICAL SUBSTANCE AND MIXTURE TESTING REQUIREMENTS General Provisions § 799.10 Test... requirements of parts 790 and 792 of this chapter unless modified in specific chemical test rules in subpart...

  19. 40 CFR 799.10 - Test standards.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 32 2011-07-01 2011-07-01 false Test standards. 799.10 Section 799.10...) IDENTIFICATION OF SPECIFIC CHEMICAL SUBSTANCE AND MIXTURE TESTING REQUIREMENTS General Provisions § 799.10 Test... requirements of parts 790 and 792 of this chapter unless modified in specific chemical test rules in subpart...

  20. Infrared thermography standards for nondestructive testing

    SciTech Connect

    Bruening, R.; Mordfin, L.

    1994-12-31

    Although infrared thermography is a well developed technology, its applications to nondestructive testing (NDT) are only now beginning to approach maturity. The efforts of many to have infrared thermography recognized by the NDT community, as a powerful and reliable tool for the inspection of materials, structures, and assemblies, has been inhibited by the absence of recognized standards for the method. The unavailability of standard test methods, standard practices, and even a standard terminology, has undoubtedly been responsible, to some extent, for the fact that neither the American national standard for the qualification and certification of NDT personnel, nor the comparable ISO standard, include infrared thermography among the recognized NDT methods. To remedy this situation, a group of infrared and nondestructive testing professionals initiated an ASTM activity to develop consensus standards relating to thermal imaging equipment and test methods. The first project undertaken by the group was directed toward standard test methods for evaluating those performance characteristics of thermal imaging systems that are important for NDT applications. The first part of this project was a study, sponsored by the National Institute of Standards and Technology, to define the performance criteria of thermal imaging systems that are important for NDT applications. This study resulted in a paper presented at Thermosense VI, in which three such criteria were identified. Through the sustained efforts of the ASTM task group, standard test methods have now been promulgated for evaluating each of these characteristics in terms meaningful to the NDT community. The three Standard Test Methods developed so far are: (1) The Minimum Detectable Temperature Difference for Thermal Imaging Systems, (2) The Minimum Resolvable Temperature Difference for Thermal Imaging Systems, and (3) The Noise Equivalent Temperature Difference of Thermal Imaging Systems.

  1. New Testing Standard For European Programs

    NASA Astrophysics Data System (ADS)

    Giordano, P.

    2004-08-01

    Standardization is a key aspect of the production business committed to the optimization of the product development and cost. In the Space field, American industries and Government organizations have developed since several decades Space standards like the MIL series, deriving them from the aircraft and military fields, or the NASA standards. The same happened later in other countries like Russia, Japan and China. In the last years most of those standards were revised to cope with the emerging needs of the market. In Europe, the Space activities were generally managed by a set of ESA standards, the PSS, which covered some aspects of these activities and reflected the up-to-date approaches and common practices. But, in the last years an initiative was also promoted by ESA, National Agencies and Space Organizations, named ECSS (European Cooperation for Space Standardization), with the aim to develop a coherent, single set of user-friendly standards for use in all European space activities. European industries supported this initiative, including a deep involvement of Alenia Spazio and, sometime through a suitable revision of the old PSS documents, new standards were defined, as for the "Testing" (ECSS-E-10-03A, now published). The ECSS-E-10-03A provides standard environmental and performance test requirements for space products (systems and their constituents) which are generally applicable to all projects. Scope of this paper is to present the status of the worldwide initiatives in the testing standardization, the major contents of the European ECSS Testing standard and the possibilities for tailoring. Differences in requirement definition with other international testing standards and proposals for further ECSS optimization are presented on the basis of Alenia Spazio experience in supporting the above initiatives.

  2. Comparison of test protocols for standard room/corner tests

    Treesearch

    R. H. White; M. A. Dietenberger; H. Tran; O. Grexa; L. Richardson; K. Sumathipala; M. Janssens

    1998-01-01

    As part of international efforts to evaluate alternative reaction-to-fire tests, several series of room/comer tests have been conducted. This paper reviews the overall results of related projects in which different test protocols for standard room/corner tests were used. Differences in the test protocols involved two options for the ignition burner scenario and whether...

  3. 76 FR 74078 - Standard Mail Market Test

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-30

    ... Standard Mail Market Test AGENCY: Postal Regulatory Commission. ACTION: Notice. SUMMARY: The Commission is... that applies to market tests of experimental market dominant products. It seeks the exemption for Every... exemption from the $10,000,000 revenue limitation in any year during the test of an experimental market...

  4. Standardized Testing in Alabama and Nationwide. Updated

    ERIC Educational Resources Information Center

    Rains, Thomas

    2014-01-01

    Standardized testing serves several purposes. Tests provide feedback on a student's performance. They can help teachers understand student achievement relative to class objectives. Tests can also help administrators identify excellent teachers and those who need more professional support. And, likewise, they can help administrators and…

  5. Neutron Sources for Standard-Based Testing

    SciTech Connect

    Radev, Radoslav; McLean, Thomas

    2014-11-10

    The DHS TC Standards and the consensus ANSI Standards use 252Cf as the neutron source for performance testing because its energy spectrum is similar to the 235U and 239Pu fission sources used in nuclear weapons. An emission rate of 20,000 ± 20% neutrons per second is used for testing of the radiological requirements both in the ANSI standards and the TCS. Determination of the accurate neutron emission rate of the test source is important for maintaining consistency and agreement between testing results obtained at different testing facilities. Several characteristics in the manufacture and the decay of the source need to be understood and accounted for in order to make an accurate measurement of the performance of the neutron detection instrument. Additionally, neutron response characteristics of the particular instrument need to be known and taken into account as well as neutron scattering in the testing environment.

  6. American History's Problem with Standardized Testing

    ERIC Educational Resources Information Center

    McCoog, Ian J.

    2005-01-01

    This article looks at current research concerning how students best learn the discipline of history, commentaries both in favor of and against standardized testing, and basic philosophical beliefs about the discipline. It explains methods of how to incorporate differentiated lessons and performance based assessments to NCLB standards and…

  7. Modeling a Galfenol based stress sensor capable of sensing up to three axial stresses

    NASA Astrophysics Data System (ADS)

    Weetman, Philip; Akhras, George

    2013-11-01

    A three dimensional rate equation model can be used to calculate the magnetization response in a Galfenol sample under the application of any or all components of stress (axial and shear) [P. Weetman and G. Akhras, J. Appl. Phys. 109, 043902 (2011)]. For a Galfenol based stress sensor, one is essentially interested in the inverse of that calculation: from magnetization measurements, determine which stresses are acting on the system. A conceptual design of a Galfenol based three dimensional dynamical sensor is presented. One assumes the time-varying magnetization and its time derivative in all three directions can be measured for different external magnetic bias fields at different points in time. It is shown that the rate equation model can be used to calculate all the stresses acting on the system from knowledge of the magnetization and the time derivative of magnetization. The necessary calculations are presented and then applied to a sample set of magnetization values, which were generated from a benchmarked sensing model that used up to three axial stresses.

  8. Alternatives to Standardized Tests. ERIC Digest.

    ERIC Educational Resources Information Center

    Wildemuth, Barbara M.

    Five alternatives to standardized testing of student achievement are described in this brief overview. The first, criterion-referenced tests, are designed to evaluate the accomplishment of specifically stated instructional objectives. Student performance is judged on the basis of the objectives, rather than in comparison to other students taking…

  9. 40 CFR 799.10 - Test standards.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 31 2010-07-01 2010-07-01 true Test standards. 799.10 Section 799.10 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT (CONTINUED) IDENTIFICATION OF SPECIFIC CHEMICAL SUBSTANCE AND MIXTURE TESTING REQUIREMENTS General Provisions § 799.10...

  10. 40 CFR 799.10 - Test standards.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 33 2013-07-01 2013-07-01 false Test standards. 799.10 Section 799.10 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT (CONTINUED) IDENTIFICATION OF SPECIFIC CHEMICAL SUBSTANCE AND MIXTURE TESTING REQUIREMENTS General Provisions § 799.10...

  11. 40 CFR 799.10 - Test standards.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 33 2012-07-01 2012-07-01 false Test standards. 799.10 Section 799.10 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT (CONTINUED) IDENTIFICATION OF SPECIFIC CHEMICAL SUBSTANCE AND MIXTURE TESTING REQUIREMENTS General Provisions § 799.10...

  12. Standardized Tests and Grades. Research Brief

    ERIC Educational Resources Information Center

    Muir, Mike

    2005-01-01

    There is decades of research on the correlation between grades and standardized test scores. Much of what the author accessed was published in the 70s and 80s, partly because a scare around "the declining American SAT score" led to an examination of the tests (the drop can easily be explained by the fact that many students who might not…

  13. Filling in the Blanks: Putting Standardized Tests to the Test.

    ERIC Educational Resources Information Center

    Cizek, Gregory J.

    1998-01-01

    This booklet provides parents, teachers, administrators, and policymakers with information about achievement testing which is relevant to their needs. The first section presents an overview of the current market for standardized achievement tests and provides key definitions, distinctions between ability and achievement testing, comparisons of…

  14. Test-Taking Skills for Standardized Tests of Reading.

    ERIC Educational Resources Information Center

    Stewart, Oran; Green, Dan S.

    1983-01-01

    Discusses test-taking skills and their application to tests of reading achievement. Presents a rationale for teaching these skills, lists a comprehensive set of skills relevant to standardized reading tests, and offers suggestions for teaching the skills and helping children use them. (FL)

  15. Proposed Ground Testing Standard Methods and Techniques

    NASA Technical Reports Server (NTRS)

    Goodnight, Thomas

    2000-01-01

    The methodologies used for prediction for on-orbit microgravity environment needs to be ground validated. The data and models for such validation will be coming from diverse sources. No standardized methodologies have been validated which cover the entire 0 - 300 Hz range. Current ground test data feeds into this process and therefore should be standardized to support both narrow and third octave band analysis.

  16. Taking tests in the magnet: Brain mapping standardized tests.

    PubMed

    Rubin, David C; Li, Dawei; Hall, Shana A; Kragel, Philip A; Berntsen, Dorthe

    2017-08-18

    Standardized psychometric tests are sophisticated, well-developed, and consequential instruments; test outcomes are taken as facts about people that impact their lives in important ways. As part of an initial demonstration that human brain mapping techniques can add converging neural-level evidence to understanding standardized tests, our participants completed items from standardized tests during an fMRI scan. We compared tests for diagnosing posttraumatic stress disorder (PTSD) and the correlated measures of Neuroticism, Attachment, and Centrality of Event to a general-knowledge baseline test. Twenty-three trauma-exposed participants answered 20 items for each of our five tests in each of the three runs for a total of 60 items per test. The tests engaged different neural processes; which test a participant was taking was accurately predicted from other participants' brain activity. The novelty of the application precluded specific anatomical predictions; however, the interpretation of activated regions using meta-analyses produced encouraging results. For instance, items on the Attachment test engaged regions shown to be more active for tasks involving judgments of others than judgments of the self. The results are an initial demonstration of a theoretically and practically important test-taking neuroimaging paradigm and suggest specific neural processes in answering PTSD-related tests. Hum Brain Mapp, 2017. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc.

  17. The skin prick test - European standards.

    PubMed

    Heinzerling, Lucie; Mari, Adriano; Bergmann, Karl-Christian; Bresciani, Megon; Burbach, Guido; Darsow, Ulf; Durham, Stephen; Fokkens, Wytske; Gjomarkaj, Mark; Haahtela, Tari; Bom, Ana Todo; Wöhrl, Stefan; Maibach, Howard; Lockey, Richard

    2013-02-01

    Skin prick testing is an essential test procedure to confirm sensitization in IgE-mediated allergic disease in subjects with rhinoconjunctivitis, asthma, urticaria, anapylaxis, atopic eczema and food and drug allergy. This manuscript reviews the available evidence including Medline and Embase searches, abstracts of international allergy meetings and position papers from the world allergy literature. The recommended method of prick testing includes the appropriate use of specific allergen extracts, positive and negative controls, interpretation of the tests after 15 - 20 minutes of application, with a positive result defined as a wheal ≥3 mm diameter. A standard prick test panel for Europe for inhalants is proposed and includes hazel (Corylus avellana), alder (Alnus incana), birch (Betula alba), plane (Platanus vulgaris), cypress (Cupressus sempervirens), grass mix (Poa pratensis, Dactilis glomerata, Lolium perenne, Phleum pratense, Festuca pratensis, Helictotrichon pretense), Olive (Olea europaea), mugwort (Artemisia vulgaris), ragweed (Ambrosia artemisiifolia), Alternaria alternata (tenuis), Cladosporium herbarum, Aspergillus fumigatus, Parietaria, cat, dog, Dermatophagoides pteronyssinus, Dermatophagoides farinae, and cockroach (Blatella germanica). Standardization of the skin test procedures and standard panels for different geographic locations are encouraged worldwide to permit better comparisons for diagnostic, clinical and research purposes.

  18. The skin prick test – European standards

    PubMed Central

    2013-01-01

    Skin prick testing is an essential test procedure to confirm sensitization in IgE-mediated allergic disease in subjects with rhinoconjunctivitis, asthma, urticaria, anapylaxis, atopic eczema and food and drug allergy. This manuscript reviews the available evidence including Medline and Embase searches, abstracts of international allergy meetings and position papers from the world allergy literature. The recommended method of prick testing includes the appropriate use of specific allergen extracts, positive and negative controls, interpretation of the tests after 15 – 20 minutes of application, with a positive result defined as a wheal ≥3 mm diameter. A standard prick test panel for Europe for inhalants is proposed and includes hazel (Corylus avellana), alder (Alnus incana), birch (Betula alba), plane (Platanus vulgaris), cypress (Cupressus sempervirens), grass mix (Poa pratensis, Dactilis glomerata, Lolium perenne, Phleum pratense, Festuca pratensis, Helictotrichon pretense), Olive (Olea europaea), mugwort (Artemisia vulgaris), ragweed (Ambrosia artemisiifolia), Alternaria alternata (tenuis), Cladosporium herbarum, Aspergillus fumigatus, Parietaria, cat, dog, Dermatophagoides pteronyssinus, Dermatophagoides farinae, and cockroach (Blatella germanica). Standardization of the skin test procedures and standard panels for different geographic locations are encouraged worldwide to permit better comparisons for diagnostic, clinical and research purposes. PMID:23369181

  19. 49 CFR 384.202 - Test standards.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 5 2013-10-01 2013-10-01 false Test standards. 384.202 Section 384.202 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION FEDERAL MOTOR CARRIER SAFETY REGULATIONS STATE COMPLIANCE WITH COMMERCIAL DRIVER'S LICENSE PROGRAM Minimum...

  20. Four Tips for Surviving Standardized Testing

    ERIC Educational Resources Information Center

    Martin, Anna

    2012-01-01

    As the tenth anniversary of NCLB has come and gone, both new and experienced educators continue to wrestle yearly with the standardized testing culture that has pervaded the educational experience of nearly every American child and teacher. Despite the requests for waivers to exempt certain states from NCLB, the majority of students and their…

  1. Standardized Testing: How Prepared Are We?

    ERIC Educational Resources Information Center

    Smolin, Andrea; Clayton, Jennifer K.

    2009-01-01

    This case exemplifies the effects of high stakes standardized testing and accountability on education and stakeholders. When schools are pressured for success, educational leaders and teachers often find themselves in circumstances where regulations and procedures are violated, sometimes with noble intent. The case focuses on the ethical and…

  2. Four Tips for Surviving Standardized Testing

    ERIC Educational Resources Information Center

    Martin, Anna

    2012-01-01

    As the tenth anniversary of NCLB has come and gone, both new and experienced educators continue to wrestle yearly with the standardized testing culture that has pervaded the educational experience of nearly every American child and teacher. Despite the requests for waivers to exempt certain states from NCLB, the majority of students and their…

  3. Standardized Testing: How Prepared Are We?

    ERIC Educational Resources Information Center

    Smolin, Andrea; Clayton, Jennifer K.

    2009-01-01

    This case exemplifies the effects of high stakes standardized testing and accountability on education and stakeholders. When schools are pressured for success, educational leaders and teachers often find themselves in circumstances where regulations and procedures are violated, sometimes with noble intent. The case focuses on the ethical and…

  4. Testing and Standards: A Brief Encyclopedia.

    ERIC Educational Resources Information Center

    Wilde, Sandra

    This reference guide contains clear and concise explanations of concepts related to educational testing and standards. The book may be read straight through as a primer on educational assessment or may be used as a reference for particular topics. The sections are: (1) Accountability (Consumers, Taxpayers, and Citizens); (2) Authenticity in…

  5. Testing and Standards: A Brief Encyclopedia.

    ERIC Educational Resources Information Center

    Wilde, Sandra

    This reference guide contains clear and concise explanations of concepts related to educational testing and standards. The book may be read straight through as a primer on educational assessment or may be used as a reference for particular topics. The sections are: (1) Accountability (Consumers, Taxpayers, and Citizens); (2) Authenticity in…

  6. Standards, Testing, and Accountability: Misguided Intentions

    ERIC Educational Resources Information Center

    Alexander, James

    2011-01-01

    There are many factors affecting student achievement. It is misguided and a waste of time and effort to pursue the failed policies of more standards, tests, and accountability. The primary problems relative to student achievement are mainly societal. Rather than more failed policies, what our nation needs is a discussion about national values,…

  7. Viscosity test standards for engine oils

    SciTech Connect

    Not Available

    1990-01-01

    This report presents a compilation of 10 ASTM standards that cover both low and high temperature viscosity tests for automotive engine oils, with respect to low temperature flow properties and performance requirements under high temperature, high shear rate conditions. Society of Automotive Engineer's Engine Oil Viscosity Classification SAE J300 is included to provide low temperature high shear rate method.

  8. Standardized Teacher Testing Fails Excellence and Validity Tests

    ERIC Educational Resources Information Center

    Portelli, John P.; Solomon, R. Patrick; Barrett, Sarah; Mujawamariya, Donatille

    2005-01-01

    This paper presents and critically analyzes data from a project that sought teacher candidates' responses to the process and content of the Ontario Teacher Qualifying Test (OTQT), a mandatory, standardized, pencil and paper initial teacher qualification test. The aim of the project, guided by a critical democratic perspective, was to critically…

  9. A STANDARDIZED LANTERN FOR TESTING COLOUR VISION.

    PubMed

    Martin, L C

    1939-01-01

    A Lantern for lesting Colour-Vision is arranged to show test colours in pairs as in the Board of Trade Lantern. It is adapted to use electric light, and is standardized by stringent testing. The paper discusses the experiments and considerations which led to the formulation of the allowable tolerances in the transmission and colour co-ordinate specifications of the filters, the colour temperature of the lamps and so on. The results of tests on normal and colour-defective subjects are described.

  10. A STANDARDIZED LANTERN FOR TESTING COLOUR VISION

    PubMed Central

    Martin, L. C.

    1939-01-01

    A Lantern for lesting Colour-Vision is arranged to show test colours in pairs as in the Board of Trade Lantern. It is adapted to use electric light, and is standardized by stringent testing. The paper discusses the experiments and considerations which led to the formulation of the allowable tolerances in the transmission and colour co-ordinate specifications of the filters, the colour temperature of the lamps and so on. The results of tests on normal and colour-defective subjects are described. PMID:18169586

  11. (De)Grading the Standardized Test: Can Standardized Testing Evaluate Schools?

    ERIC Educational Resources Information Center

    Simmons, Nicola E.

    2004-01-01

    Standardized testing is an assessment strategy that evaluates all students and all schools on the same basic skills and, therefore, might reasonably indicate which schools are high performers and which are not. Standardized testing is not a new strategy for providing this proof. The United States has produced reams of articles criticizing…

  12. (De)Grading the Standardized Test: Can Standardized Testing Evaluate Schools?

    ERIC Educational Resources Information Center

    Simmons, Nicola E.

    2004-01-01

    Standardized testing is an assessment strategy that evaluates all students and all schools on the same basic skills and, therefore, might reasonably indicate which schools are high performers and which are not. Standardized testing is not a new strategy for providing this proof. The United States has produced reams of articles criticizing…

  13. Static testing and proposed standard specifications

    NASA Technical Reports Server (NTRS)

    Warner, E P

    1920-01-01

    Static tests fall into two groups, the first of which is designed to load all members of the structure approximately in accordance with the worst loads which they carry in flight, while the second is directed to the testing of specific members which are suspected of weakness and which are difficult to analyze mathematically. The nature of the loading in the second type is different for every different test, but the purpose of the first is defined clearly enough to permit the adoption of some standard set of loading specifications, at least for airplanes of normal design. Here, an attempt is made to carry through an analysis leading to such a standard, the goal being the determination of a load which will simultaneously impose on every member of the airplane structure a stress equal to the worst it will carry in flight.

  14. Validation of Physics Standardized Test Items

    NASA Astrophysics Data System (ADS)

    Marshall, Jill

    2008-10-01

    The Texas Physics Assessment Team (TPAT) examined the Texas Assessment of Knowledge and Skills (TAKS) to determine whether it is a valid indicator of physics preparation for future course work and employment, and of the knowledge and skills needed to act as an informed citizen in a technological society. We categorized science items from the 2003 and 2004 10th and 11th grade TAKS by content area(s) covered, knowledge and skills required to select the correct answer, and overall quality. We also analyzed a 5000 student sample of item-level results from the 2004 11th grade exam using standard statistical methods employed by test developers (factor analysis and Item Response Theory). Triangulation of our results revealed strengths and weaknesses of the different methods of analysis. The TAKS was found to be only weakly indicative of physics preparation and we make recommendations for increasing the validity of standardized physics testing..

  15. Standard method of tumbler test for coal

    SciTech Connect

    Not Available

    1980-01-01

    This tumbler test covers the determinationof the relative friability of a particular size of sized coal. It affords a means of measuring the liability of coal to break into smaller pieces when subjected to repeated handling at the mine or subsequently, by the distributor or by the consumer. The test is serviceable for ascertaining the similarity of coals in respect to friability rather than for determining values within narrow limits in order to emphasize their dissimilarity. This method also may serve to indicate the relative extent to which sized coals will suffer size degradation in certain mechanical feed devices. The test may be employed for differentiating between certain ranks and grades of coal, and therefore the method is of service for coal classification purposes. The values stated in inch-pound units are to be regarded as the standard.

  16. Experimentally testing the standard cosmological model

    SciTech Connect

    Schramm, D.N. Fermi National Accelerator Lab., Batavia, IL )

    1990-11-01

    The standard model of cosmology, the big bang, is now being tested and confirmed to remarkable accuracy. Recent high precision measurements relate to the microwave background; and big bang nucleosynthesis. This paper focuses on the latter since that relates more directly to high energy experiments. In particular, the recent LEP (and SLC) results on the number of neutrinos are discussed as a positive laboratory test of the standard cosmology scenario. Discussion is presented on the improved light element observational data as well as the improved neutron lifetime data. alternate nucleosynthesis scenarios of decaying matter or of quark-hadron induced inhomogeneities are discussed. It is shown that when these scenarios are made to fit the observed abundances accurately, the resulting conclusions on the baryonic density relative to the critical density, {Omega}{sub b}, remain approximately the same as in the standard homogeneous case, thus, adding to the robustness of the standard model conclusion that {Omega}{sub b} {approximately} 0.06. This latter point is the deriving force behind the need for non-baryonic dark matter (assuming {Omega}{sub total} = 1) and the need for dark baryonic matter, since {Omega}{sub visible} < {Omega}{sub b}. Recent accelerator constraints on non-baryonic matter are discussed, showing that any massive cold dark matter candidate must now have a mass M{sub x} {approx gt} 20 GeV and an interaction weaker than the Z{sup 0} coupling to a neutrino. It is also noted that recent hints regarding the solar neutrino experiments coupled with the see-saw model for {nu}-masses may imply that the {nu}{sub {tau}} is a good hot dark matter candidate. 73 refs., 5 figs.

  17. Standardization activities for harmonization of test results.

    PubMed

    Dati, F; Brand, B

    2000-07-01

    In the last years the search for sensitive and specific markers of renal damage and/or renal function has conducted to the development of laboratory assays for measurement of urinary proteins such as albumin, beta(2)-microglobulin, alpha(1)-microglobulin, cystatin C, etc. Furthermore, there have been new applications of already known markers based on different, reformulated methods which often rely on more advanced technologies. It is evident that such developments are connected with analytical and interpretative problems for laboratory managers and clinicians. In this situation, it is essential that international societies develop comprehensive measures for the quality management of these assays and issue uniform and carefully elaborated guidelines to ensure optimal test utilization. International activities are also directed to the development of optimized and standardized methods as well as to the production and evaluation of appropriate reference materials and, finally, to the establishment of appropriate reference ranges and cut-off values for specific analytes. The main use of reference materials is in the transfer of their accurately assigned values to the calibrators of diagnostic companies for calibration of commercially available test systems. These international standardization activities and strategies will allow a harmonized approach to disease management using a more reliable laboratory testing based on quality and value.

  18. Toward standardization of EAP actuators test procedures

    NASA Astrophysics Data System (ADS)

    Fernandez, Diego; Moreno, Luis; Baselga, Juan

    2005-05-01

    Since the field of Electroactive Polymers (EAP) actuators is fairly new there are no standard testing processes for such intelligent materials. This drawback can seriously limit the scope of application of EAP actuators, since the targeted industrial sectors (aerospace, biomedical...) demand high reliability and product assurance. As a first iteration two elements are required to define a test standard for an EAP actuator: a Unit Tester, and a Component Specification. In this paper a EAP Unit Tester architecture is presented along with the required classification of measurements to be included in the EAP actuator Component Specification. The proposed EAP Unit Tester allows on-line monitoring and recording of the following properties of the specimen under test: large deformation, small tip displacement, temperature at the electrodes, weight of the specimen, voltage and current driven into the EAP, load being applied to the actuator, output voltage of the EAP in sensing operation and mode of operation (structure/sensor/actuator/smart). The measurements are taken simultaneously, in real-time. The EAP Unit Tester includes a friendly Graphical User Interface. It uses embedded Excel tools to visualize data. In addition, real-time connectivity with MATLAB allows an easy testing of control algorithms. A novel methodology to measure the properties of EAP specimens versus a variable load is also presented. To this purpose a force signals generator in the range of mN was developed. The device is based on a DC mini-motor. It generates an opposing force to the movement of the EAP actuator. Since the device constantly opposes the EAP actuator movement it has been named Digital Force Generator (DFG). The DFG design allows simultaneous length and velocity measuring versus different load signals. By including such a device in the EAP Unit Tester the most suitable application for the specimen under test can be easily identified (vibration damper, large deformation actuator, large

  19. Standard Test Methods for Textile Composites

    NASA Technical Reports Server (NTRS)

    Masters, John E.; Portanova, Marc A.

    1996-01-01

    Standard testing methods for composite laminates reinforced with continuous networks of braided, woven, or stitched fibers have been evaluated. The microstructure of these textile' composite materials differs significantly from that of tape laminates. Consequently, specimen dimensions and loading methods developed for tape type composites may not be applicable to textile composites. To this end, a series of evaluations were made comparing testing practices currently used in the composite industry. Information was gathered from a variety of sources and analyzed to establish a series of recommended test methods for textile composites. The current practices established for laminated composite materials by ASTM and the MIL-HDBK-17 Committee were considered. This document provides recommended test methods for determining both in-plane and out-of-plane properties. Specifically, test methods are suggested for: unnotched tension and compression; open and filled hole tension; open hole compression; bolt bearing; and interlaminar tension. A detailed description of the material architectures evaluated is also provided, as is a recommended instrumentation practice.

  20. Centaur Standard Shroud (CSS) cryogenic unlatch tests

    NASA Technical Reports Server (NTRS)

    1973-01-01

    Cryogenic tanking and partial jettison (unlatch) tests were performed on a full scale Centaur vehicle and Centaur Standard Shroud (CSS) to develop and qualify the CSS insulation system, the CSS and Centaur ground-hold purge systems, and the Centaur hydrogen tank flight vent system. Operation of the shroud/Centaur pyrotechnic systems, seals, and the shroud jettison springs, hinges, and other separation systems was demonstrated by a partial jettison of the shroud into catch nets. The Centaur tanks were filled with liquid hydrogen and liquid nitrogen. Prelaunch operations were performed, and data taken to establish system performances. Results from the initial tests showed a higher than expected heat transfer rate to the Centaur hydrogen tank. In addition, the release mechanism for the forward seal between the Centaur and the CSS did not function properly, and the seal was torn during jettison of the shroud.

  1. Standard-E hydrogen monitoring system shop acceptance test procedure

    SciTech Connect

    Schneider, T.C.

    1997-10-02

    The purpose of this report is to document that the Standard-E Hydrogen Monitoring Systems (SHMS-E), fabricated by Mid-Columbia Engineering (MCE) for installation on the Waste Tank Farms in the Hanford 200 Areas, are constructed as intended by the design. The ATP performance will verify proper system fabrication.

  2. Standard tests for toughened resin composites, revised edition

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Several toughened resin systems are evaluated to achieve commonality for certain kinds of tests used to characterize toughened resin composites. Specifications for five tests were standardized; these test standards are described.

  3. Experimental tests of the standard model.

    SciTech Connect

    Nodulman, L.

    1998-11-11

    The title implies an impossibly broad field, as the Standard Model includes the fermion matter states, as well as the forces and fields of SU(3) x SU(2) x U(1). For practical purposes, I will confine myself to electroweak unification, as discussed in the lectures of M. Herrero. Quarks and mixing were discussed in the lectures of R. Aleksan, and leptons and mixing were discussed in the lectures of K. Nakamura. I will essentially assume universality, that is flavor independence, rather than discussing tests of it. I will not pursue tests of QED beyond noting the consistency and precision of measurements of {alpha}{sub EM} in various processes including the Lamb shift, the anomalous magnetic moment (g-2) of the electron, and the quantum Hall effect. The fantastic precision and agreement of these predictions and measurements is something that convinces people that there may be something to this science enterprise. Also impressive is the success of the ''Universal Fermi Interaction'' description of beta decay processes, or in more modern parlance, weak charged current interactions. With one coupling constant G{sub F}, most precisely determined in muon decay, a huge number of nuclear instabilities are described. The slightly slow rate for neutron beta decay was one of the initial pieces of evidence for Cabbibo mixing, now generalized so that all charged current decays of any flavor are covered.

  4. Development of a Stereo Vision Measurement System for a 3D Three-Axial Pneumatic Parallel Mechanism Robot Arm

    PubMed Central

    Chiang, Mao-Hsiung; Lin, Hao-Ting; Hou, Chien-Lun

    2011-01-01

    In this paper, a stereo vision 3D position measurement system for a three-axial pneumatic parallel mechanism robot arm is presented. The stereo vision 3D position measurement system aims to measure the 3D trajectories of the end-effector of the robot arm. To track the end-effector of the robot arm, the circle detection algorithm is used to detect the desired target and the SAD algorithm is used to track the moving target and to search the corresponding target location along the conjugate epipolar line in the stereo pair. After camera calibration, both intrinsic and extrinsic parameters of the stereo rig can be obtained, so images can be rectified according to the camera parameters. Thus, through the epipolar rectification, the stereo matching process is reduced to a horizontal search along the conjugate epipolar line. Finally, 3D trajectories of the end-effector are computed by stereo triangulation. The experimental results show that the stereo vision 3D position measurement system proposed in this paper can successfully track and measure the fifth-order polynomial trajectory and sinusoidal trajectory of the end-effector of the three- axial pneumatic parallel mechanism robot arm. PMID:22319408

  5. Development of a stereo vision measurement system for a 3D three-axial pneumatic parallel mechanism robot arm.

    PubMed

    Chiang, Mao-Hsiung; Lin, Hao-Ting; Hou, Chien-Lun

    2011-01-01

    In this paper, a stereo vision 3D position measurement system for a three-axial pneumatic parallel mechanism robot arm is presented. The stereo vision 3D position measurement system aims to measure the 3D trajectories of the end-effector of the robot arm. To track the end-effector of the robot arm, the circle detection algorithm is used to detect the desired target and the SAD algorithm is used to track the moving target and to search the corresponding target location along the conjugate epipolar line in the stereo pair. After camera calibration, both intrinsic and extrinsic parameters of the stereo rig can be obtained, so images can be rectified according to the camera parameters. Thus, through the epipolar rectification, the stereo matching process is reduced to a horizontal search along the conjugate epipolar line. Finally, 3D trajectories of the end-effector are computed by stereo triangulation. The experimental results show that the stereo vision 3D position measurement system proposed in this paper can successfully track and measure the fifth-order polynomial trajectory and sinusoidal trajectory of the end-effector of the three- axial pneumatic parallel mechanism robot arm.

  6. Voter Perceptions: Common Core State Standards & Tests

    ERIC Educational Resources Information Center

    Achieve, Inc., 2014

    2014-01-01

    Since June 2010, 46 states and Washington DC have adopted the Common Core State Standards (CCSS)--K-12 standards in mathematics and English language arts/literacy developed through a multi-state initiative led by the National Governors Association and the Council of Chief State School Officers. Implementation of the standards is underway in all of…

  7. 8 CFR 312.3 - Standardized citizenship testing.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 8 Aliens and Nationality 1 2011-01-01 2011-01-01 false Standardized citizenship testing. 312.3... REQUIREMENTS FOR NATURALIZATION § 312.3 Standardized citizenship testing. (a)(1) An applicant for... from the testing entity concerning the applicant's test. (4) An applicant who has failed a standardized...

  8. 8 CFR 312.3 - Standardized citizenship testing.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false Standardized citizenship testing. 312.3... REQUIREMENTS FOR NATURALIZATION § 312.3 Standardized citizenship testing. (a)(1) An applicant for... from the testing entity concerning the applicant's test. (4) An applicant who has failed a standardized...

  9. Benchmarking and Alignment of Standards and Testing. CSE Technical Report.

    ERIC Educational Resources Information Center

    Rothman, Robert; Slattery, Jean B.; Vranek, Jennifer L.; Resnick, Lauren B.

    The success of standards-based education systems depends on two elements: strong standards and assessments that measure what the standards expect. States that have, or adopt, test-based accountability programs claim that their tests are aligned to their standards. But there has been, up to now, no independent methodology for checking alignment.…

  10. Standardized Tests: A Handbook for Administration and Use.

    ERIC Educational Resources Information Center

    Lown, Donald E.

    The purpose of this handbook is to provide information and guidelines for using data from standardized tests. The handbook consists of six sections: (1) explains the rationale for district-wide testing; (2) discusses a district testing program; (3) presents guidelines for testing which describes procedures for administering standardized tests; (4)…

  11. 42 CFR 493.1281 - Standard: Comparison of test results.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 5 2010-10-01 2010-10-01 false Standard: Comparison of test results. 493.1281... Testing Analytic Systems § 493.1281 Standard: Comparison of test results. (a) If a laboratory performs the... between test results using the different methodologies, instruments, or testing sites. (b) The laboratory...

  12. Standardization of Test for Assessment and Comparing of Students' Measurement

    ERIC Educational Resources Information Center

    Osadebe, Patrick U.

    2014-01-01

    The study Standardized Economics Achievement Test for senior secondary school students in Nigeria. Three research questions guided the study. The standardized test in Economics was first constructed by an expert as a valid and reliable instrument. The test was then used for standardization in this study. That is, ensuring that the Economics…

  13. Standardized Testing and the Construction of Governable Persons

    ERIC Educational Resources Information Center

    Graham, Cameron; Neu, Dean

    2004-01-01

    While debates over standardized testing are ubiquitous, there has been relatively little consideration of how today's standardized testing practices have arisen. The current study provides a chronology of standardized testing within Alberta, Canada. Starting from prior work by Foucault and others on "governmentality", we propose that the…

  14. Standardized Testing and the Construction of Governable Persons

    ERIC Educational Resources Information Center

    Graham, Cameron; Neu, Dean

    2004-01-01

    While debates over standardized testing are ubiquitous, there has been relatively little consideration of how today's standardized testing practices have arisen. The current study provides a chronology of standardized testing within Alberta, Canada. Starting from prior work by Foucault and others on "governmentality", we propose that the…

  15. An Instrument to Assess Beliefs about Standardized Testing: Measuring the Influence of Epistemology on the Endorsement of Standardized Testing

    ERIC Educational Resources Information Center

    Magee, Robert G.; Jones, Brett D.

    2012-01-01

    This article describes the development of an instrument to assess beliefs about standardized testing in schools, a topic of much heated debate. The Beliefs About Standardized Testing scale was developed to measure the extent to which individuals support high-stakes standardized testing. The 9-item scale comprises three subscales which measure…

  16. Fire-related standards and testing

    NASA Technical Reports Server (NTRS)

    Babrauskas, Vytenis

    1987-01-01

    The state of the art of flammability testing has been changing rapidly. Here, the progress in developing general test methods for solid materials and products exposed to an external fire are reviewed. The special requirements pertinent to environments of concern to NASA are examined and some suggestions for possible directions for future test method developments are given.

  17. Calibration curves for some standard Gap Tests

    SciTech Connect

    Bowman, A.L.; Sommer, S.C.

    1989-01-01

    The relative shock sensitivities of explosive compositions are commonly assessed using a family of experiments that can be described by the generic term ''Gap Test.'' Gap tests include a donor charge, a test sample, and a spacer, or gap, between two explosives charges. The donor charge, gap material, and test dimensions are held constant within each different version of the gap test. The thickness of the gap is then varied to find the value at which 50% of the test samples will detonate. The gap tests measure the ease with a high-order detonation can be established in the test explosive, or the ''detonability,'' of the explosive. Test results are best reported in terms of the gap thickness at the 50% point. It is also useful to define the shock pressure transmitted into the test sample at the detonation threshold. This requires calibrating the gap test in terms of shock pressure in the gap as a function of the gap thickness. It also requires a knowledge of the shock Hugoniot of the sample explosive. We used the 2DE reactive hydrodynamic code with Forest Fire burn rates for the donor explosives to calculate calibration curves for several gap tests. The model calculations give pressure and particle velocity on the centerline of the experimental set-up and provide information about the curvature and pulse width of the shock wave. 10 refs., 1 fig.

  18. Comparison of JPL and European Environmental Testing Standards

    NASA Technical Reports Server (NTRS)

    Man, Kin Fung; Forgave, John C.; Hoffman, Alan R.

    2006-01-01

    A comparison of JPL and European environmental testing standards is presented. The contents include: 1) JPL Environmental Testing Documents; 2) Focus of the Comparison; 3) Test Policy; 4) Documentation; 5) Programmatics; 6) Functional Testing; 7) Reporting; 8) Dynamics Test Levels, Durations, & Margins; 9) Thermal Test Levels, Durations, & Margins; and 10) EMC Test Levels, Durations, & Margins.

  19. Comparison of JPL and European Environmental Testing Standards

    NASA Technical Reports Server (NTRS)

    Man, Kin Fung; Forgave, John C.; Hoffman, Alan R.

    2006-01-01

    A comparison of JPL and European environmental testing standards is presented. The contents include: 1) JPL Environmental Testing Documents; 2) Focus of the Comparison; 3) Test Policy; 4) Documentation; 5) Programmatics; 6) Functional Testing; 7) Reporting; 8) Dynamics Test Levels, Durations, & Margins; 9) Thermal Test Levels, Durations, & Margins; and 10) EMC Test Levels, Durations, & Margins.

  20. 42 CFR 493.1425 - Standard; Testing personnel responsibilities.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Testing Laboratories Performing Moderate Complexity Testing § 493.1425 Standard; Testing personnel... reporting test results. (a) Each individual performs only those moderate complexity tests that are... complexity testing must— (1) Follow the laboratory's procedures for specimen handling and processing, test...

  1. Standardized Reading Tests and the Postsecondary Reading Curriculum.

    ERIC Educational Resources Information Center

    Wood, Nancy V.

    To help college reading teachers develop an awareness of what standardized reading tests do and do not reveal about students' reading abilities, a study examined the testing of reading and criticized four major standardized tests. Results indicated that reading is tested through (1) reading passages accompanied by multiple choice questions, (2)…

  2. Encouraging and Supporting Compliance with Standards for Educational Tests

    ERIC Educational Resources Information Center

    Wise, Lauress L.

    2006-01-01

    Uses and consequences of educational testing have increased dramatically in recent years. Professional standards to ensure fair treatment of all affected by test results are more important than ever, but standards for developing and using educational tests are only helpful if they are followed. Test developers and users each have a role to play in…

  3. IEC/EN standards relating to diagnostic radiology equipment, and testing according to these standards

    NASA Astrophysics Data System (ADS)

    Porubszky, Tamas; Barsai, Janos

    2008-01-01

    The paper gives an outlook of history, present and future of international (IEC) and European (EN) standards relating to diagnostic radiology equipment. These standards may be safety, quality assurance or performance standards; all of them include testing methods. Elaboration and publication of a new series of safety standards is in progress. Acceptance and conformance testing activity of the accredited Radiohygiene Department Laboratory of NRIRR according to these standards is reported.

  4. Cancer Screening: How Do Screening Tests Become Standard Tests?

    MedlinePlus

    ... cancer symptoms. There are different kinds of screening tests. Screening tests include the following: Physical exam and ... are linked to some types of cancer. Screening tests have risks. Not all screening tests are helpful ...

  5. The Use and Misuse of Standardized Tests.

    ERIC Educational Resources Information Center

    Holloway, John H.

    2001-01-01

    When used appropriately, standardized assessments can assist education reform by tracking individual or group progress and achievement levels and indicating college readiness. Credibility and validity can be improved by preventing student exclusions, using multiple indicators, stressing year-to-year performance, monitoring consequences, and…

  6. Standardized Tests: Purpose Is the Point

    ERIC Educational Resources Information Center

    Popham, W. James

    2016-01-01

    "U.S. students are being educated less well these days than they should be," writes W. James Popham. One key contributing factor is that educators often use the wrong tests to make their most important educational decisions. Two recent events have made it a perfect time to change the way we conduct our educational testing: growing…

  7. Standardized Tests: Purpose Is the Point

    ERIC Educational Resources Information Center

    Popham, W. James

    2016-01-01

    "U.S. students are being educated less well these days than they should be," writes W. James Popham. One key contributing factor is that educators often use the wrong tests to make their most important educational decisions. Two recent events have made it a perfect time to change the way we conduct our educational testing: growing…

  8. Errors in Standardized Tests: A Systemic Problem.

    ERIC Educational Resources Information Center

    Rhoades, Kathleen; Madaus, George

    The nature and extent of human error in educational testing over the past 25 years were studied. In contrast to the random measurement error expected in all tests, the presence of human error is unexpected and brings unknown, often harmful, consequences for students and their schools. Using data from a variety of sources, researchers found 103…

  9. 49 CFR 384.202 - Test standards.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION FEDERAL MOTOR CARRIER SAFETY REGULATIONS STATE COMPLIANCE WITH... driving skills test for the operation of a CMV in accordance with part 383 of this title....

  10. How I Learned to Stop Worrying and Love Standardized Testing

    ERIC Educational Resources Information Center

    Moxey, Tim

    2005-01-01

    The benefits of standardized testing for a teacher are mentioned for which the teacher has to prepare for the students only for the test and not worry for preparing the students for college, work and life. Standardized testing takes away individualized instruction, does not allow creativity, does not measure true progress or advance critical…

  11. How I Learned to Stop Worrying and Love Standardized Testing

    ERIC Educational Resources Information Center

    Moxey, Tim

    2005-01-01

    The benefits of standardized testing for a teacher are mentioned for which the teacher has to prepare for the students only for the test and not worry for preparing the students for college, work and life. Standardized testing takes away individualized instruction, does not allow creativity, does not measure true progress or advance critical…

  12. 42 CFR 493.1363 - Standard: PPM testing personnel qualifications.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 5 2014-10-01 2014-10-01 false Standard: PPM testing personnel qualifications. 493... Testing Laboratories Performing Provider-Performed Microscopy (ppm) Procedures § 493.1363 Standard: PPM testing personnel qualifications. Each individual performing PPM procedures must— (a) Possess a...

  13. 42 CFR 493.1363 - Standard: PPM testing personnel qualifications.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 5 2012-10-01 2012-10-01 false Standard: PPM testing personnel qualifications. 493... Testing Laboratories Performing Provider-Performed Microscopy (ppm) Procedures § 493.1363 Standard: PPM testing personnel qualifications. Each individual performing PPM procedures must— (a) Possess a...

  14. 42 CFR 493.1363 - Standard: PPM testing personnel qualifications.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 5 2013-10-01 2013-10-01 false Standard: PPM testing personnel qualifications. 493... Testing Laboratories Performing Provider-Performed Microscopy (ppm) Procedures § 493.1363 Standard: PPM testing personnel qualifications. Each individual performing PPM procedures must— (a) Possess a...

  15. 42 CFR 493.1363 - Standard: PPM testing personnel qualifications.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 5 2010-10-01 2010-10-01 false Standard: PPM testing personnel qualifications. 493... Testing Laboratories Performing Provider-Performed Microscopy (ppm) Procedures § 493.1363 Standard: PPM testing personnel qualifications. Each individual performing PPM procedures must— (a) Possess a...

  16. 42 CFR 493.1363 - Standard: PPM testing personnel qualifications.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 5 2011-10-01 2011-10-01 false Standard: PPM testing personnel qualifications. 493... Testing Laboratories Performing Provider-Performed Microscopy (ppm) Procedures § 493.1363 Standard: PPM testing personnel qualifications. Each individual performing PPM procedures must— (a) Possess a...

  17. Validity of Standardized Achievement Tests for English Language Learners.

    ERIC Educational Resources Information Center

    Abedi, Jamal; Leon, Seth; Mirocha, Jim

    The concurrent validity of standardized achievement tests (the Stanford 9 and the Iowa Tests of Basic Skills) was examined using data from different school districts nationwide and a latent variable modeling approach. Items in the standardized achievement tests in several content areas were divided into parcels. Parcel scores were used to create…

  18. Standard test method for size of anthracite

    SciTech Connect

    Not Available

    1980-01-01

    This method covering screen analysis of anthracite is used to determine the percentage of undersize or oversize in ny given commercial size. The values stated in inch-pound units are to be regarded as the standard. Procedure, in case th coal is wet, air-dryit before screening. Determine the undersize first. For broken, egg, and stove sizes, up-end each piece by hand on the screen, to determine whether in any position it passes through the screen. For nut, pea, buckwheat, and rice sizes, shake the screens gently with a reciprocating horizontal motion, so as to avoid breakage ofthe coal, until practically no more coal will pass through the openings. Screen the coal in such increments as will allow the pieces to be in direct contact with the screen openings after the completion of the shaking of each increment.

  19. Historical Evolution of NASA Standard Materials Testing with Hypergolic Propellants and Ammonia (NASA Standard 6001 Test 15)

    NASA Technical Reports Server (NTRS)

    Greene, Benjamin; McClure, Mark B.

    2012-01-01

    The NASA Johnson Space Center White Sands Test Facility (WSTF) has performed testing of hazardous and reactive aerospace fluids, including hypergolic propellants, with materials since the 1960s with the Apollo program. Amongst other test activities, Test 15 is a NASA standard test for evaluating the reactivity of materials with selected aerospace fluids, in particular hydrazine, monomethylhydrazine, uns-dimethylhydrazine, Aerozine 50, dinitrogen tetroxide oxidizers, and ammonia. This manuscript provides an overview of the history of Test 15 over a timeline ranging from prior to its development and first implementation as a NASA standard test in 1974 to its current refinement. Precursor documents to NASA standard tests, as they are currently known, are reviewed. A related supplementary test, international standardization, and enhancements to Test 15 are also discussed. Because WSTF was instrumental in the development and implementation of Test 15, WSTF experience and practices are referred to in this manuscript.

  20. 42 CFR 493.1241 - Standard: Test request.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... (CONTINUED) STANDARDS AND CERTIFICATION LABORATORY REQUIREMENTS Quality System for Nonwaived Testing..., including, as applicable, a contact person to enable the reporting of imminently life threatening laboratory...

  1. ISO environmental testing and reliability standards for optics

    NASA Astrophysics Data System (ADS)

    Parks, Robert E.

    1993-12-01

    In this paper, we give a little background into the work of ISO/TC172/SC1/WG1, the ISO subcommittee that is writing standards for the environmental testing of optics and optical instruments. By environmental test standards, we mean standards that outline what sort of climatic variations and conditions of use optical instruments must survive and still operate within given performance specifications. The scope of the standards this subcommittee is writing is then described followed by a thorough description of the general content of the 2 standards that are nearing completion. Finally, we discuss the applicability of these standards and how they may affect optics and optical systems that are intended for sale in international markets. We also discuss briefly the relationship of these ISO standards to MIL-STD-810E, Environmental Test Methods and Engineering Guidelines, the U.S. Military standard.

  2. Engineering and Design: Standard Penetration Test

    DTIC Science & Technology

    2007-11-02

    Penetration TestDe Contract Number Grant Number Program Element Number Author(s) Project Number Task Number Work Unit Number Performing Organization Name...jsfi I I US* of drlXXi~ mucl -r*ueusiog In I Decrm8e8 hcrea8ea Zither Increases Increases Increeses Decrea8es lncreeaes Increases Increeaes Zither &creases DecrU8e* nem8*s hcruses Xnt-ses tieee Utber k~ee Enclosure 2

  3. 40 CFR 85.2207 - Onboard diagnostic test standards.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Tests § 85.2207 Onboard diagnostic test standards. (a) A vehicle shall fail the OBD test if it is a 1996... inoperable. (b) A vehicle shall fail the OBD test if the malfunction indicator light (MIL) is commanded to be... OBD test if the MIL is commanded to be illuminated for one or more diagnostic trouble codes (DTCs),...

  4. Student evaluation of a standardized comprehensive testing program.

    PubMed

    Richards, Elizabeth A; Stone, Cynthia L

    2008-01-01

    Computer-based, standardized, comprehensive testing is becoming a popular assessment tool in nursing education.This study sought to determine student response and satisfaction regarding such testing at a large state nursing school. Surveys that reviewed the entire testing process were provided to all students taking the computerized testing. Student feedback led to revisions for future testing.

  5. A Comparative Study on Automotive Brake Testing Standards

    NASA Astrophysics Data System (ADS)

    Kumbhar, Bhau Kashinath; Patil, Satyajit Ramchandra; Sawant, Suresh Maruti

    2016-06-01

    Performance testing of automotive brakes involves determination of stopping time, distance and deceleration level. Braking performance of an automobile is required to be ensured for various surfaces like dry, wet, concrete, bitumen etc. as well as for prolonged applications. Various brake testing standards are used worldwide to assure vehicle and pedestrian safety. This article presents methodologies used for automotive service brake testing for two wheelers. The main contribution of this work lies in comparative study of three main brake testing standards; viz. Indian Standards, Federal Motor Vehicle Safety Standards and European Economic Commission Standards. This study shall help the policy makers to choose the best criteria out of these three while formulating newer edition of testing standards.

  6. A Comparative Study on Automotive Brake Testing Standards

    NASA Astrophysics Data System (ADS)

    Kumbhar, Bhau Kashinath; Patil, Satyajit Ramchandra; Sawant, Suresh Maruti

    2017-08-01

    Performance testing of automotive brakes involves determination of stopping time, distance and deceleration level. Braking performance of an automobile is required to be ensured for various surfaces like dry, wet, concrete, bitumen etc. as well as for prolonged applications. Various brake testing standards are used worldwide to assure vehicle and pedestrian safety. This article presents methodologies used for automotive service brake testing for two wheelers. The main contribution of this work lies in comparative study of three main brake testing standards; viz. Indian Standards, Federal Motor Vehicle Safety Standards and European Economic Commission Standards. This study shall help the policy makers to choose the best criteria out of these three while formulating newer edition of testing standards.

  7. Optimizing subsystem test programs. [spacecraft equipment standardization for cost reduction

    NASA Technical Reports Server (NTRS)

    Meyer, W. H.; Pierman, B. C.

    1974-01-01

    The goal of reduction of space system costs is pursued in the areas of standardization of subsystem test requirements as well as overall subsystem test program resource requirements. A number of standard components are being developed by NASA. The rationale for the various environmental tests applicable to future missions and launch vehicles is discussed. The need for and approach to developing standard component specifications is presented. In addition, a method for reduction of test expenditures utilizing indexes of mission effect and hardware history as indicators of test requirements is proposed.

  8. DOE standard: Quality assurance inspection and testing of HEPA filters

    SciTech Connect

    1999-02-01

    This standard establishes essential elements for the quality assurance inspection and testing of HEPA filters by US Department of Energy (DOE)-accepted Filter Test Facilities (FTF). The standard specifies HEPA filter quality assurance inspection and testing practices established in DOE-STD-3022-98, DOE HEPA Filter Test Program, and provides a basis for the preparation of written operating procedures for primary FTF functions.

  9. A Measure of Failure: The Political Origins of Standardized Testing

    ERIC Educational Resources Information Center

    Garrison, Mark J.

    2009-01-01

    How did standardized tests become the measure of performance in our public schools? In this compelling work, Mark J. Garrison attempts to answer this question by analyzing the development of standardized testing, from the days of Horace Mann and Alfred Binet to the current scene. Approaching the issue from a sociohistorical perspective, the author…

  10. A Measure of Failure: The Political Origins of Standardized Testing

    ERIC Educational Resources Information Center

    Garrison, Mark J.

    2009-01-01

    How did standardized tests become the measure of performance in our public schools? In this compelling work, Mark J. Garrison attempts to answer this question by analyzing the development of standardized testing, from the days of Horace Mann and Alfred Binet to the current scene. Approaching the issue from a sociohistorical perspective, the author…

  11. Effects of Remediation on High-Stakes Standardized Testing

    ERIC Educational Resources Information Center

    Shaver, William

    2013-01-01

    This dissertation examined the impact of an intervention aimed at improving the standardized test scores for students on the mathematics portions of a high-stakes high school examination. Research shows that the achievement gap between high performing and low performing students on standardized tests continues to grow and that the long-term…

  12. Coping with Standards, Tests, and Accountability: Voices from the Classroom.

    ERIC Educational Resources Information Center

    Glatthorn, Allan A., Ed.; Fontana, Jean, Ed.

    This book presents the views of teachers, teacher educators, and administrators who write about accountability, testing, and standards programs. The chapters are: (1) "From Policy to Practice: The Research" (Allan A. Glatthorn); (2) "New York's Test-Driven Standards" (Jean Fontana); (3) "Voices from a Native American…

  13. 40 CFR 80.165 - Certification test procedures and standards.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... PROGRAMS (CONTINUED) REGULATION OF FUELS AND FUEL ADDITIVES Detergent Gasoline § 80.165 Certification test... standards which must be met in order to certify detergent additives for use in unleaded gasoline, pursuant... section. The testing must be conducted and the performance standards met when the subject detergent...

  14. 42 CFR 493.1283 - Standard: Test records.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 5 2014-10-01 2014-10-01 false Standard: Test records. 493.1283 Section 493.1283 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) STANDARDS AND CERTIFICATION LABORATORY REQUIREMENTS Quality System for Nonwaived Testing...

  15. Coping with Standards, Tests, and Accountability: Voices from the Classroom.

    ERIC Educational Resources Information Center

    Glatthorn, Allan A., Ed.; Fontana, Jean, Ed.

    This book presents the views of teachers, teacher educators, and administrators who write about accountability, testing, and standards programs. The chapters are: (1) "From Policy to Practice: The Research" (Allan A. Glatthorn); (2) "New York's Test-Driven Standards" (Jean Fontana); (3) "Voices from a Native American…

  16. 42 CFR 493.1283 - Standard: Test records.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 5 2010-10-01 2010-10-01 false Standard: Test records. 493.1283 Section 493.1283 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) STANDARDS AND CERTIFICATION LABORATORY REQUIREMENTS Quality System for Nonwaived Testing Analytic...

  17. 42 CFR 493.1283 - Standard: Test records.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 5 2011-10-01 2011-10-01 false Standard: Test records. 493.1283 Section 493.1283 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) STANDARDS AND CERTIFICATION LABORATORY REQUIREMENTS Quality System for Nonwaived Testing Analytic...

  18. Hearing Aid–Related Standards and Test Systems

    PubMed Central

    Ravn, Gert; Preves, David

    2015-01-01

    Many documents describe standardized methods and standard equipment requirements in the field of audiology and hearing aids. These standards will ensure a uniform level and a high quality of both the methods and equipment used in audiological work. The standards create the basis for measuring performance in a reproducible manner and independent from how and when and by whom parameters have been measured. This article explains, and focuses on, relevant acoustic and electromagnetic compatibility parameters and describes several test systems available. PMID:27516709

  19. ISO standards on test methods for water radioactivity monitoring.

    PubMed

    Calmet, D; Ameon, R; Bombard, A; Forte, M; Fournier, M; Herranz, M; Jerome, S; Kwakman, P; Llaurado, M; Tokonami, S

    2013-11-01

    Water is vital to humans and each of us needs at least 1.5L of safe water a day to drink. Beginning as long ago as 1958 the World Health Organization (WHO) has published guidelines to help ensure water is safe to drink. Focused from the start on monitoring radionuclides in water, and continually cooperating with WHO, the International Standardization Organization (ISO) has been publishing standards on radioactivity test methods since 1978. As reliable, comparable and 'fit for purpose' results are an essential requirement for any public health decision based on radioactivity measurements, international standards of tested and validated radionuclide test methods are an important tool for production of such measurements. This paper presents the ISO standards already published that could be used as normative references by testing laboratories in charge of radioactivity monitoring of drinking water as well as those currently under drafting and the prospect of standardized fast test methods in response to a nuclear accident.

  20. 42 CFR 493.1291 - Standard: Test report.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Postanalytic Systems § 493.1291 Standard: Test report. (a) The laboratory must have an adequate manual or... receipt from outside referral laboratories, satellite or point-of-care testing locations. (b) Test report... laboratory and to CMS or a CMS agent upon request. (c) The test report must indicate the following: (1) For...

  1. A Production Test in Black Standard and Nonstandard Speech

    ERIC Educational Resources Information Center

    Politzer, Robert L.; Brown, Dwight

    1973-01-01

    As part of the development of a battery of tests to determine proficiency in black standard and nonstandard speech, a test, consisting of 20 items involving verbal and pictorial cues, was developed and administered to 27 third graders and 32 sixth graders. Results were analyzed to determine test reliability and correlation with other test scores.…

  2. "Standards"-based Mathematics Curricula and Secondary Students' Performance on Standardized Achievement Tests

    ERIC Educational Resources Information Center

    Harwell, Michael R.; Post, Thomas R.; Maeda, Yukiko; Davis, Jon D.; Cutler, Arnold L.; Andersen, Edwin; Kahan, Jeremy A.

    2007-01-01

    The current study examined the mathematical achievement of high school students enrolled for 3 years in one of three NSF funded "Standards"-based curricula (IMP, CMIC, MMOW). The focus was on traditional topics in mathematics as measured by subtests of a standardized achievement test and a criterion-referenced test of mathematics…

  3. NIST physical standards for DNA-based medical testing.

    PubMed

    Barker, Peter E; Watson, Michael S; Ticehurst, John R; Colbert, Jennifer C; O'Connell, Catherine D

    2002-01-01

    As DNA and RNA become major targets for clinical laboratory analysis, benchmark reagents will play an increasingly important role in standardization. Reliable national and international nucleic acid standards promote automation and third-party reimbursement for clinical testing. Furthermore, nucleic acid standards provide materials for quality assurance and quality control (QA/QC), and proficiency testing. Standard methods and training initially evolved from consensus guidelines endorsed by professional societies and governmental agencies. The National Institute of Standards and Technology (NIST), a nonregulatory agency of the U.S. Department of Commerce, develops and certifies physical and chemical standards in support of national commerce, manufacturing, and science. In its role supporting U.S. science and industry, the NIST responds to specific standards needs, most recently for medically and biologically important analytes. Broad-based consensus developed through interdisciplinary NIST workshops initiated development of NIST-certified DNA standards. Such materials serve the diagnostic community and help manufacturers benchmark a variety of DNA diagnostic testing platforms. Here we summarize the NIST experience and programs for development of national standards for DNA-based medical diagnostic testing. Copyright 2002 Wiley-Liss, Inc.

  4. Standardized Testing for Outcome Assessment: Analysis of the Educational Testing Systems MBA Tests

    ERIC Educational Resources Information Center

    Wright, Robert E.

    2010-01-01

    The use of standardized tests for outcome assessment has grown dramatically in recent years. Two driving factors have been the No Child Left Behind legislation, and the increase in outcome assessment measures by accrediting agencies such as AACSB, the international accrediting body for business schools. Despite the growth in usage, little effort…

  5. Standardized Testing for Outcome Assessment: Analysis of the Educational Testing Systems MBA Tests

    ERIC Educational Resources Information Center

    Wright, Robert E.

    2010-01-01

    The use of standardized tests for outcome assessment has grown dramatically in recent years. Two driving factors have been the No Child Left Behind legislation, and the increase in outcome assessment measures by accrediting agencies such as AACSB, the international accrediting body for business schools. Despite the growth in usage, little effort…

  6. Eight Ways to Support Students during Standardized Tests. Classroom Tips

    ERIC Educational Resources Information Center

    Higdon, Julie; Holcomb, Linda Laine

    2012-01-01

    Standardized testing time often creates a nervous atmosphere in classrooms. In past years one of the authors joined a chorus of teachers singing her own woes about the infamous test. She increased her daily caffeine intake, lost sleep, and became a nervous, crazed teacher who had turned her classroom into a test prep center. Her aha moment came…

  7. Eliminating Standardized Tests in College Admissions: The New Affirmative Action?

    ERIC Educational Resources Information Center

    Zwick, Rebecca

    1999-01-01

    Eliminating the Scholastic Aptitude Test for college admissions might seem a form of covert affirmative action. Although it is possible to design a workable admissions policy that excludes standardized tests (as 15 percent of colleges have done), banishing admissions tests to further a social-policy goal indirectly is unsound policy. (Contains 25…

  8. Standardized Testing of American Indian Students. ERIC Digest.

    ERIC Educational Resources Information Center

    Brescia, William; Fortune, Jim C.

    The testing of many American Indian children using standardized exams (achievement, aptitude, ability, and intelligence tests) developed for the majority American society represents a case of cross-cultural testing which is likely to produce invalid results in the form of underestimation of student performance. Requirements for obtaining accurate…

  9. Eight Ways to Support Students during Standardized Tests. Classroom Tips

    ERIC Educational Resources Information Center

    Higdon, Julie; Holcomb, Linda Laine

    2012-01-01

    Standardized testing time often creates a nervous atmosphere in classrooms. In past years one of the authors joined a chorus of teachers singing her own woes about the infamous test. She increased her daily caffeine intake, lost sleep, and became a nervous, crazed teacher who had turned her classroom into a test prep center. Her aha moment came…

  10. National Unmanned Aerial System Standardized Performance Testing and Rating (NUSTAR)

    NASA Technical Reports Server (NTRS)

    Kopardekar, Parimal

    2016-01-01

    The overall objective of the NUSTAR Capability is to offer standardized tests and scenario conditions to assess performance of the UAS. The following are goals of the NU-STAR: 1. Create a prototype standardized tests and scenarios that vehicles can be tested against. 2. Identify key performance parameters of all UAS and their standardized measurement strategy. 3. Develop standardized performance reporting method (e.g., consumer report style) to assist prospective buyers. 4. Identify key performance metrics that could be used by judged towards overall safety of the UAS and operations. 5. If vehicle certification standard is made by a regulatory agency, the performance of individual UAS could be compared against the minimum requirement (e.g., sense and avoid detection time, stopping distance, kinetic energy, etc.).

  11. Standardization of lubricity test. Interim report, November 1985-November 1986

    SciTech Connect

    Biddle, T.B.; Meehan, R.J.; Warner, P.A.

    1987-08-01

    Since the early 1960s the Ball-on-Cylinder Lubricity Evaluator (BOCLE) test has been recognized as the best available method for providing a relative system of measurement of the lubricity properties of jet engine fuels. The technical effort described in this report was directed at refining and standardizing the (BOCLE) test. It focused on identifying variables suspected of affecting the test method precision. The Falex Ring was shown to significantly enhance BOCLE-test precision and eliminate many of the problems associated with the conventional AMS 6444 test cylinder. Test results showed that the source of the test ball can have a significant effect on BOCLE test results. SKF Swedish precision balls were found to provide optimum batch to batch consistency. Isopar M + 30 ppm DuPont DCI-4A was shown to be a reproducible fluid suitable for use as a standard reference fluid for BOCLE testing.

  12. Effects of a Remediation Class on Standardized Test Retake

    ERIC Educational Resources Information Center

    Levine, Theresa Delgado

    2012-01-01

    Since the enactment of the No Child Left Behind Act (NCLB), one state has implemented a standardized test to track and report student progress to the federal government. One school district has developed a class to assist students in improving their score and ultimately the passing rate on the state's Instrument to Measure Standards (AIMS)…

  13. Student Performance Standards and Testing Programs: Background Information for Legislators.

    ERIC Educational Resources Information Center

    Sutter, Joel A.; Rice, Elizabeth V.

    This report provides Minnesota legislators with background information on establishing state educational standards and periodic testing to measure student progress. Scientific management, the accountability movement, and the basic education movement were educational trends of the 1970's providing pressure on states to set standards to improve…

  14. Standardized Testing: Does it Measure Student Preparation for College & Work?

    ERIC Educational Resources Information Center

    Camacho, Dawn; Cook, Vickie

    2007-01-01

    How can schools effectively prepare students for life after high school? With the accountability standards set forth by the No Child Left Behind Act (NCLB), there are many theories regarding standardized testing. Many schools today are adopting the goal of preparing all students for the college or the workplace. This review of current literature…

  15. Analysis of household refrigerators for different testing standards

    SciTech Connect

    Bansal, P.K.; McGill, I.

    1995-08-01

    This study highlights the salient differences among various testing standards for household refrigerator-freezers and proposes a methodology for predicting the performance of a single evaporator-based vapor-compression refrigeration system (either refrigerator or freezer) from one test standard (where the test data are available-the reference case) to another (the alternative case). The standards studied during this investigation include the Australian-New Zealand Standard (ANZS), the International Standard (ISO), the American National Standard (ANSI), the Japanese Industrial Standard (JIS), and the Chinese National Standard (CNS). A simple analysis in conjunction with the BICYCLE model (Bansal and Rice 1993) is used to calculate the energy consumption of two refrigerator cabinets from the reference case to the alternative cases. The proposed analysis includes the effect of door openings (as required by the JIS) as well as defrost heaters. The analytical results are found to agree reasonably well with the experimental observations for translating energy consumption information from one standard to another.

  16. Multilevel Linkages between State Standards, Teacher Standards, and Student Achievement: Testing External versus Internal Standards-Based Education Models

    ERIC Educational Resources Information Center

    Lee, Jaekyung; Liu, Xiaoyan; Amo, Laura Casey; Wang, Weichun Leilani

    2014-01-01

    Drawing on national and state assessment datasets in reading and math, this study tested "external" versus "internal" standards-based education models. The goal was to understand whether and how student performance standards work in multilayered school systems under No Child Left Behind Act of 2001 (NCLB). Under the…

  17. Multilevel Linkages between State Standards, Teacher Standards, and Student Achievement: Testing External versus Internal Standards-Based Education Models

    ERIC Educational Resources Information Center

    Lee, Jaekyung; Liu, Xiaoyan; Amo, Laura Casey; Wang, Weichun Leilani

    2014-01-01

    Drawing on national and state assessment datasets in reading and math, this study tested "external" versus "internal" standards-based education models. The goal was to understand whether and how student performance standards work in multilayered school systems under No Child Left Behind Act of 2001 (NCLB). Under the…

  18. Conformance testing for the spatial data transfer standard

    USGS Publications Warehouse

    Lazar, Robert A.

    1994-01-01

    The Spatial Data Transfer Standard (SDTS) was approved as Federal Information Processing Standard (FIPS) 173, effective February 1993. Federal agencies and geographic information system vendors currently are developing SDTS encoding and decoding capabilities. A program is being developed to test encoders and decoders for conformance to the requirements of SDTS profiles. A series of test points will specify SDTS requirements that can be tested by software or by nonautomated methods. By certifying SDTS products, the conformance testing program will benefit both vendors and users of the SDTS.

  19. Performance testing of extremity dosimeters against a draft standard

    SciTech Connect

    Harty, R.; Reece, W.D.; Hooker, C.D.; McDonald, J.C.

    1990-09-01

    The assurance of worker radiation safety is directly related to the performance of personnel dosimetry. The US Department of Energy (DOE) has long recognized this critical relationship and has addressed this issue by instituting the DOE Laboratory Accreditation Program (DOELAP) which strives to improve the quality of personnel dosimetry through performance testing, dosimetry calibration, intercomparisons, evaluations and accreditations. One area of personnel dosimetry that has not been specifically addressed by DOELAP is extremity dosimeter testing. This task was directed at assessing the problems of implementing extremity dosimeter performance testing. A series of performance tests were made based on a draft standard written by the Health Physics Society Standards Committee (HPSSC) using extremity dosimeters currently in use at DOE and DOE contractor facilities. The results of this study indicate the need to incorporate performance testing of extremity dosimetry systems into DOELAP. Based on the results of this study, recommendations are made for improvements to the draft standard. 20 refs., 6 figs., 3 tabs.

  20. A standardized test battery for the study of synesthesia

    PubMed Central

    Eagleman, David M.; Kagan, Arielle D.; Nelson, Stephanie S.; Sagaram, Deepak; Sarma, Anand K.

    2014-01-01

    Synesthesia is an unusual condition in which stimulation of one modality evokes sensation or experience in another modality. Although discussed in the literature well over a century ago, synesthesia slipped out of the scientific spotlight for decades because of the difficulty in verifying and quantifying private perceptual experiences. In recent years, the study of synesthesia has enjoyed a renaissance due to the introduction of tests that demonstrate the reality of the condition, its automatic and involuntary nature, and its measurable perceptual consequences. However, while several research groups now study synesthesia, there is no single protocol for comparing, contrasting and pooling synesthetic subjects across these groups. There is no standard battery of tests, no quantifiable scoring system, and no standard phrasing of questions. Additionally, the tests that exist offer no means for data comparison. To remedy this deficit we have devised the Synesthesia Battery. This unified collection of tests is freely accessible online (http://www.synesthete.org). It consists of a questionnaire and several online software programs, and test results are immediately available for use by synesthetes and invited researchers. Performance on the tests is quantified with a standard scoring system. We introduce several novel tests here, and offer the software for running the tests. By presenting standardized procedures for testing and comparing subjects, this endeavor hopes to speed scientific progress in synesthesia research. PMID:16919755

  1. Biodegradation of 4-nitrophenol in standardized aquatic degradation tests

    SciTech Connect

    Nyholm, N.; Lindgaard-Jorgensen, P.; Hansen, N.

    1984-10-01

    During the years 1978-1981 both the European Economic Community (the EEC) and the Organization for Economic Cooperation and Development (the OECD) organized various interlaboratory comparison programs on standardized screening methods to study the biodegradability of chemicals in water. While the ring test results were generally rather heterogenous, one of the compounds studied, 4-nitrophenol, turned out to be particularly problematic as the compound was found either easily biodegradable or not biodegradable by various laboratories in various tests. This paper describes some more detailed studies on 4-nitrophenol degradation in two different tests, the modified OECD screening test (MOST test) and the Zahn-Wellens test, respectively. The test variables investigated include inoculum characteristics and pretreatment, test duration, and 4-nitrophenol concentration. The results are discussed in relation to toxicity and degradation pathways of 4-nitrophenol. It is concluded that in order to improve the comparability of results from standardized aquatic biodegradation tests, test strategies should allow the option of performing a test with a preadapted inoculum in the event of negative test results with freshly collected inocula. Increasing the inoculated concentration of microorganisms in some tests may also contribute to the attainment of more consistent test results.

  2. Puerto Rican Vocational Students' Experiences Regarding Standardized Tests

    ERIC Educational Resources Information Center

    Segui, Nomara I.

    2016-01-01

    Vocational high school students are not passing state tests and are not meeting adequate yearly progress (AYP) requirements in Puerto Rico. Limited qualitative research has been conducted to examine the experiences of vocational high school students regarding mandated standardized tests. Using a qualitative case study, the experiences of Puerto…

  3. Consistency of Standard Setting in an Augmented State Testing System

    ERIC Educational Resources Information Center

    Lissitz, Robert W.; Wei, Hua

    2008-01-01

    In this article we address the issue of consistency in standard setting in the context of an augmented state testing program. Information gained from the external NRT scores is used to help make an informed decision on the determination of cut scores on the state test. The consistency of cut scores on the CRT across grades is maintained by forcing…

  4. 40 CFR 80.165 - Certification test procedures and standards.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... PROGRAMS (CONTINUED) REGULATION OF FUELS AND FUEL ADDITIVES Detergent Gasoline § 80.165 Certification test... standards which must be met in order to certify detergent additives for use in unleaded gasoline, pursuant... detergent additive is mixed in a test fuel meeting all relevant requirements of § 80.164, including the...

  5. Standards for Educational and Psychological Testing, 2014 Edition

    ERIC Educational Resources Information Center

    American Educational Research Association (AERA), 2014

    2014-01-01

    Developed jointly by the American Educational Research Association, American Psychological Association, and the National Council on Measurement in Education, "Standards for Educational and Psychological Testing" (Revised 2014) addresses professional and technical issues of test development and use in education, psychology, and…

  6. Air Force Officer Qualifying Test Form O: Development and Standardization.

    ERIC Educational Resources Information Center

    Rogers, Deborah L.; And Others

    This report presents the rationale, development, and standardization of the Air Force Officer Qualifying Test (AFOQT) Form O. The test is used to select individuals for officer commissioning programs, and candidates for pilot and navigator training. Form O contains 380 items organized in 16 subtests. All items are administered in a single test…

  7. Making Standardized Tests Work For Your IGE School.

    ERIC Educational Resources Information Center

    Heuer, Edwin

    A technique is described which uses the standardized tests to evaluate an Individually Guided Education Curriculum (IGE). A technique was devised so that an evaluation of each test question could be made. The teaching staff at Port Edwards, Wisconsin, where this study was conducted, was asked to rate questions for relevancy to the IGE curriculum…

  8. Puerto Rican Vocational Students' Experiences Regarding Standardized Tests

    ERIC Educational Resources Information Center

    Segui, Nomara I.

    2016-01-01

    Vocational high school students are not passing state tests and are not meeting adequate yearly progress (AYP) requirements in Puerto Rico. Limited qualitative research has been conducted to examine the experiences of vocational high school students regarding mandated standardized tests. Using a qualitative case study, the experiences of Puerto…

  9. Consistency of Standard Setting in an Augmented State Testing System

    ERIC Educational Resources Information Center

    Lissitz, Robert W.; Wei, Hua

    2008-01-01

    In this article we address the issue of consistency in standard setting in the context of an augmented state testing program. Information gained from the external NRT scores is used to help make an informed decision on the determination of cut scores on the state test. The consistency of cut scores on the CRT across grades is maintained by forcing…

  10. State Standardized Testing Programs: Their Effects on Teachers and Students

    ERIC Educational Resources Information Center

    Moon, Tonya R.; Brighton, Catherine M.; Jarvis, Jane M.; Hall, Catherine J.

    2007-01-01

    A driving force in standards-based educational reform was the 1983 release of "A Nation at Risk: The Imperative for Educational Reform" (National Commission of Excellence in Education [NCEE], 1983). The report called for "an end to the minimum competency testing movement and the beginning of a high-stakes testing movement that would raise the…

  11. Standards for Educational and Psychological Testing, 2014 Edition

    ERIC Educational Resources Information Center

    American Educational Research Association (AERA), 2014

    2014-01-01

    Developed jointly by the American Educational Research Association, American Psychological Association, and the National Council on Measurement in Education, "Standards for Educational and Psychological Testing" (Revised 2014) addresses professional and technical issues of test development and use in education, psychology, and…

  12. Addressing Standardized Testing through a Novel Assesment Model

    ERIC Educational Resources Information Center

    Schifter, Catherine C.; Carey, Martha

    2014-01-01

    The No Child Left Behind (NCLB) legislation spawned a plethora of standardized testing services for all the high stakes testing required by the law. We argue that one-size-fits all assessments disadvantage students who are English Language Learners, in the USA, as well as students with limited economic resources, special needs, and not reading on…

  13. 40 CFR 80.165 - Certification test procedures and standards.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... PROGRAMS (CONTINUED) REGULATION OF FUELS AND FUEL ADDITIVES Detergent Gasoline § 80.165 Certification test... standards which must be met in order to certify detergent additives for use in unleaded gasoline, pursuant... detergent additive is mixed in a test fuel meeting all relevant requirements of § 80.164, including...

  14. Thermal stress in a bi-material assembly with a 'piecewise-continuous' bonding layer: theorem of three axial forces

    NASA Astrophysics Data System (ADS)

    Suhir, E.

    2009-02-01

    We consider a bi-material assembly with a 'piecewise-continuous' bonding layer. The layer is characterized by different elastic constants of its 'pieces' (segments) and is assumed to be thin. Young's moduli of all the 'pieces' of the bonding layer are significantly lower than the moduli of the adherend materials. In such a situation the coefficient of thermal expansion (CTE) of the bonding material need not be accounted for. Only the interfacial compliance of the bonding layer is important. This is indeed the case for the majority of electronic, opto-electronic or photonic assemblies. We consider the situation when the assembly is manufactured at an elevated temperature and is subsequently cooled down to a low (say, room) temperature. The objective of the analysis is to develop a simple, easy-to-use and physically meaningful analytical ('mathematical') predictive model for the evaluation of the interfacial shearing stresses that arise at the boundaries of the 'pieces' (segments) of the bonding layer and at the assembly edge. The basic equation is obtained for the thermally induced forces acting in the adherends' cross-sections that correspond to the boundaries between the dissimilar portions of the bonding layer. This equation has the form of the theorem of three (bending) moments in the theory of multi-span beams lying on separate simple supports and could therefore be called the 'theorem of three axial forces'. We show, as an illustration, how this equation could be employed to design a bi-material assembly with an inhomogeneous bonding layer and with low interfacial shearing stresses. Low shearing stresses will certainly result in lower peeling stresses as well. The numerical example is carried out for an assembly with a relatively high-modulus bonding material in its mid-portion (aimed primarily at providing good adhesion and, if necessary, good heat transfer as well) and a low-modulus material in its peripheral portions (aimed primarily at bringing down the

  15. BSAC standardized disc susceptibility testing method (version 11).

    PubMed

    Howe, R A; Andrews, J M

    2012-12-01

    This article highlights key amendments incorporated into version 11 of the BSAC standardized disc susceptibility testing method, available as Supplementary data at JAC Online (http://jac.oxfordjournals.org/) and on the BSAC web site (http://bsac.org.uk/susceptibility/guidelines-standardized-disc-susceptibility-testing-method/). The basic disc susceptibility testing method remains unchanged, but there have been a number of alterations to the interpretive criteria for certain organism/drug combinations due to continuing harmonization with the EUCAST MIC breakpoints and constant efforts to improve the reliability and clinical applicability of the guidance.

  16. Standards for the testing and evaluation of seismic isolation systems

    SciTech Connect

    Taylor, A.W.; Chung, R.M.; Shenton, H.W.

    1995-12-01

    Draft guidelines for the testing and evaluation of seismic isolation systems have recently been developed at the National Institute of Standards and Technology (NIST). These guidelines are organized into three sections: pre-qualification, prototype, and quality control testing. The guidelines are broadly applicable, since they are independent of the type of isolation system and superstructure. The guidelines will serve as a resource document for industry, and as a basis for developing future standards for testing of isolation systems. This paper gives an overview of the NIST draft guidelines, emphasizing the philosophy behind the development of the guidelines. A brief summary of the contents of the guidelines is also presented.

  17. Comparison of standard acute toxicity tests with rapid-screening toxicity tests

    SciTech Connect

    Toussaint, M.W.; Shedd, T.R.; VanDerSchal, W.H.; Leather, G.R.

    1995-10-01

    This study compared the relative sensitivity of five inexpensive, rapid toxicity tests to the sensitivity of five standard aquatic acute toxicity tests through literature review and testing. The rapid toxicity tests utilized organisms that require little culturing or handling prior to testing: a freshwater rotifer (Branchionus ccalyciflorus); brine shrimp (Artemia salina); lettuce (Lactuca sativa); and two microbial tests (Photo bacterium phosphoreum - Microtox test, and a mixture of bacterial species - the polytox test). Standard acute toxicity test species included water fleas (Daphnia magna and Ceriadaphnta dubia), green algae (Setenastrum capricarnutum), fathead minnows (Pimephalespromelas), and mysid shrimp (Mysidopsis bahia). Sensitivity comparisons between rapid and standard acute toxicity tests were based on LC5O/EC50 data from 11 test chemicals. Individually, the lettuce and rotifer tests ranked most similar in sensitivity to the standard tests, while Microtox fell just outside the range of sensitivities represented by the group of standard acute toxicity tests. The brine shrimp and Polytox tests were one or more orders of magnitude different from the standard acute toxicity tests for most compounds. The lettuce, rotifer, and Microtox tests could be used as a battery for preliminary toxicity screening of chemicals. Further evaluation of complex real-world environmental samples is recommended.

  18. A comparison of standard acute toxicity tests with rapid-screening toxicity tests

    SciTech Connect

    Toussaint, M.W.; Shedd, T.R.; Schalie, W.H. van der; Leather, G.R.

    1995-05-01

    This study compared the relative sensitivity of five inexpensive, rapid toxicity tests to the sensitivity of five standard aquatic acute toxicity tests through literature review and testing. The rapid toxicity tests utilized organisms that require little culturing or handling prior to testing: a freshwater rotifer (Branchionus calyciflorus); brine shrimp (Artemia salina); lettuce (Lactuca sativa); and two microbial tests (Photobacterium phosphoreum--Microtox{reg_sign} test, and a mixture of bacterial species--the Polytox{reg_sign} test). Standard acute toxicity test species included water fleas (Daphnia magna and Ceriodaphnia dubia), green algae (Selenastrum capricornutum), fathead minnows (Pimephales promelas), and mysid shrimp (Mysidopsis bahia). Sensitivity comparisons between rapid and standard acute toxicity tests were based on LC50/EC50 data from 11 test chemicals. Individually, the lettuce and rotifer tests ranked most similar in sensitivity to the standard tests, while Microtox fell just outside the range of sensitivities represented by the group of standard acute toxicity tests. The brine shrimp and Polytox tests were one or more orders of magnitude different from the standard acute toxicity tests for most compounds. The lettuce, rotifer, and Microtox tests could be used as a battery for preliminary toxicity screening of chemicals. Further evaluation of complex real-world environmental samples is recommended.

  19. DOE standard: Filter test facility quality program plan

    SciTech Connect

    1999-02-01

    This standard was developed primarily for application in US Department of Energy programs. It contains specific direction for HEPA filter testing performed at a DOE-accepted HEPA Filter Test Facility (FTF). Beneficial comments (recommendations, additions, deletions) and any pertinent data that may improve this document should be sent to the Office of Nuclear Safety Policy and Standards (EH-31), US Department of Energy, Washington, DC 20585, by letter or by using the self-addressed Document Improvement Proposal form (DOE F 1300.3) appearing at the end of this document.

  20. Assessing cultural validity in standardized tests in stem education

    NASA Astrophysics Data System (ADS)

    Gassant, Lunes

    This quantitative ex post facto study examined how race and gender, as elements of culture, influence the development of common misconceptions among STEM students. Primary data came from a standardized test: the Digital Logic Concept Inventory (DLCI) developed by Drs. Geoffrey L. Herman, Michael C. Louis, and Craig Zilles from the University of Illinois at Urbana-Champaign. The sample consisted of a cohort of 82 STEM students recruited from three universities in Northern Louisiana. Microsoft Excel and the Statistical Package for the Social Sciences (SPSS) were used for data computation. Two key concepts, several sub concepts, and 19 misconceptions were tested through 11 items in the DLCI. Statistical analyses based on both the Classical Test Theory (Spearman, 1904) and the Item Response Theory (Lord, 1952) yielded similar results: some misconceptions in the DLCI can reliably be predicted by the Race or the Gender of the test taker. The research is significant because it has shown that some misconceptions in a STEM discipline attracted students with similar ethnic backgrounds differently; thus, leading to the existence of some cultural bias in the standardized test. Therefore the study encourages further research in cultural validity in standardized tests. With culturally valid tests, it will be possible to increase the effectiveness of targeted teaching and learning strategies for STEM students from diverse ethnic backgrounds. To some extent, this dissertation has contributed to understanding, better, the gap between high enrollment rates and low graduation rates among African American students and also among other minority students in STEM disciplines.

  1. [Discussion on control method of testing standards for medical device test lab].

    PubMed

    Yu, Ping

    2012-07-01

    The whole process of standards management is analyzed based on such two aspects as effective version of standard and the proper application to find out the key points and control methods. By controlling the key points, medical device test lab can be ensured to use the updated effective version standards properly and provide accurate results and reports.

  2. Teacher Attitudes About Standardized Testing and Test Preparation: A Case Study

    NASA Astrophysics Data System (ADS)

    Klager, Christopher R.

    This study looks at how science teachers' attitudes about standardized testing affect the types of test preparation practice they choose. Interviews, both before and after state testing, classroom observations during test preparation, and documents from test preparation contributed evidence used to create case studies about two teachers. Teacher attitudes related to pressure they felt to obtain high scores, test preparation ethics, and inexperience with state testing contributed to the decisions the teachers made about test preparation. Education for teachers about what test preparation practices are appropriate and the format of the test could help other teachers make informed decisions about test preparation practices.

  3. Stress Optical Coefficient, Test Methodology, and Glass Standard Evaluation

    DTIC Science & Technology

    2016-05-01

    modification of an ASTM testing procedure for determining stress optical coefficient is described. Stress optical coefficient data for several types of glasses...Tables iv Acknowledgments v 1. Introduction 1 2. Photoelasticity 2 3. ASTM Testing 3 4. SOC Experimental Evaluation 4 5. New Method for Evaluation...beams adapted from the ASTM standard. The glass beams used are to have a width b) of 20–30 mm, thickness d) of 6–10 mm, and a length within the

  4. Does parental physical violence reduce children's standardized test score performance?

    PubMed

    Peek-Asa, Corinne; Maxwell, Leah; Stromquist, Ann; Whitten, Paul; Limbos, Mary Ann; Merchant, James

    2007-11-01

    Many negative cognitive and behavioral outcomes have been identified among children living in households with parental violence, but few studies have examined academic performance. In a rural population-based cohort, we examine the role of parental violence on standardized test score performance. The cohort included 306 children ages 6 through 17. Parents responded to a health interview that included questions about physical violence. Children's standardized test scores were collected prospectively for 5 years after the parent interview. Hierarchical multivariate models clustering on school, household, and repeated individual test scores and controlling for children's and parent's characteristics were run to predict test score performance. One in five children lived in a household in which parents reported at least one act of physical violence. Children whose parents reported intimate partner violence (IPV) performed an average of 12.2 percentile points lower than children whose parents reported no IPV (95% CI, -19.2--5.2; p < 0.001). Parent-reported IPV led to larger test score reductions for girls than for boys and for children less than 12 years old than for older children. Parental physical violence was common, and children in homes with violence had significantly poorer performance on standardized test scores.

  5. Flat panel display test and evaluation: procedures, standards, and facilities

    NASA Astrophysics Data System (ADS)

    Jackson, Timothy W.; Daniels, Reginald; Hopper, Darrel G.

    1997-07-01

    This paper addresses flat panel display test and evaluation via a discussion of procedures, standards and facilities. Procedures need to be carefully developed and documented to ensure that test accomplished in separate laboratories produce comparable results. The tests themselves must not be a source of inconsistency in test results when such comparisons are made in the course of procurements or new technology prototype evaluations. Standards are necessary to expedite the transition of the new display technologies into applications and to lower the costs of custom parts applied across disparate applications. The flat panel display industry is in the course of ascertaining and formulating such standards as they are of value to designers, manufacturers, marketers and users of civil and military products and equipment. Additionally, in order to inform the DoD and industry, the test and evaluation facilities of the Air Force Research Laboratory Displays Branch are described. These facilities are available to support procurements involving flat panel displays and to examine new technology prototypes. Finally, other government display testing facilities within the Navy and the Army are described.

  6. Standards Development Activities at White Sands Test Facility

    NASA Technical Reports Server (NTRS)

    Baker, D. L.; Beeson, H. D.; Saulsberry, R. L.; Julien, H. L.; Woods, S. S.

    2003-01-01

    The development of standards and standard activities at the JSC White Sands Test Facility (WSTF) has been expanded to include the transfer of technology and standards to voluntary consensus organizations in five technical areas of importance to NASA. This effort is in direct response to the National Technology Transfer Act designed to accelerate transfer of technology to industry and promote government-industry partnerships. Technology transfer is especially important for WSTF, whose longterm mission has been to develop and provide vital propellant safety and hazards information to aerospace designers, operations personnel, and safety personnel. Meeting this mission is being accomplished through the preparation of consensus guidelines and standards, propellant hazards analysis protocols, and safety courses for the propellant use of hydrogen, oxygen, and hypergols, as well as the design and inspection of spacecraft pressure vessels and the use of pyrovalves in spacecraft propulsion systems. The overall WSTF technology transfer program is described and the current status of technology transfer activities are summarized.

  7. Standardization of Solar Mirror Reflectance Measurements - Round Robin Test: Preprint

    SciTech Connect

    Meyen, S.; Lupfert, E.; Fernandez-Garcia, A.; Kennedy, C.

    2010-10-01

    Within the SolarPaces Task III standardization activities, DLR, CIEMAT, and NREL have concentrated on optimizing the procedure to measure the reflectance of solar mirrors. From this work, the laboratories have developed a clear definition of the method and requirements needed of commercial instruments for reliable reflectance results. A round robin test was performed between the three laboratories with samples that represent all of the commercial solar mirrors currently available for concentrating solar power (CSP) applications. The results show surprisingly large differences in hemispherical reflectance (sh) of 0.007 and specular reflectance (ss) of 0.004 between the laboratories. These differences indicate the importance of minimum instrument requirements and standardized procedures. Based on these results, the optimal procedure will be formulated and validated with a new round robin test in which a better accuracy is expected. Improved instruments and reference standards are needed to reach the necessary accuracy for cost and efficiency calculations.

  8. Standard-D hydrogen monitoring system acceptance test

    SciTech Connect

    Lott, D.T., Westinghouse Hanford

    1996-05-24

    This document details the results of the field Acceptance Testing of the Standard-D Hydrogen Monitoring System on the waste tank exhaust stacks in 241-AW and 241-AN tank farm. The monitors will be used to measure hydrogen and ammonia from the exhaust stacks.

  9. Opting Out: Parents Creating Contested Spaces to Challenge Standardized Tests

    ERIC Educational Resources Information Center

    Mitra, Dana; Mann, Bryan; Hlavacik, Mark

    2016-01-01

    We explore how the opt-out movement has responded to the combination of a stringent federal policy with weak and often variable implementation among the states. Gaps between federal expectations and states' understandings of just how to make NCLB's demands a reality have created policy ambiguity. Parents who oppose standardized testing have…

  10. Standardized Testing and School Segregation: Like Tinder for Fire?

    ERIC Educational Resources Information Center

    Knoester, Matthew; Au, Wayne

    2017-01-01

    Recent research suggests that high-stakes standardized testing has played a negative role in the segregation of children by race and class in schools. In this article we review research on the overall effects of segregation, the positive and negative aspects of how desegregation plans were carried out following the 1954 Supreme Court decision…

  11. 16 CFR 432.3 - Standard test conditions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... AMPLIFIERS UTILIZED IN HOME ENTERTAINMENT PRODUCTS § 432.3 Standard test conditions. For purposes of... equipment shall be 60 Hz and 50 Hz for equipment made for foreign sale or use; (c) The amplifier shall be... sinusoidal wave at a frequency of 1,000 Hz; provided, however, that for amplifiers utilized as a component...

  12. 16 CFR 432.3 - Standard test conditions.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... AMPLIFIERS UTILIZED IN HOME ENTERTAINMENT PRODUCTS § 432.3 Standard test conditions. For purposes of... equipment shall be 60 Hz and 50 Hz for equipment made for foreign sale or use; (c) The amplifier shall be... sinusoidal wave at a frequency of 1,000 Hz; provided, however, that for amplifiers utilized as a component...

  13. 16 CFR 432.3 - Standard test conditions.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... AMPLIFIERS UTILIZED IN HOME ENTERTAINMENT PRODUCTS § 432.3 Standard test conditions. For purposes of... equipment shall be 60 Hz and 50 Hz for equipment made for foreign sale or use; (c) The amplifier shall be... sinusoidal wave at a frequency of 1,000 Hz; provided, however, that for amplifiers utilized as a component...

  14. 16 CFR 432.3 - Standard test conditions.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... AMPLIFIERS UTILIZED IN HOME ENTERTAINMENT PRODUCTS § 432.3 Standard test conditions. For purposes of... equipment shall be 60 Hz and 50 Hz for equipment made for foreign sale or use; (c) The amplifier shall be... sinusoidal wave at a frequency of 1,000 Hz; provided, however, that for amplifiers utilized as a component...

  15. 16 CFR 432.3 - Standard test conditions.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... AMPLIFIERS UTILIZED IN HOME ENTERTAINMENT PRODUCTS § 432.3 Standard test conditions. For purposes of... equipment shall be 60 Hz and 50 Hz for equipment made for foreign sale or use; (c) The amplifier shall be... sinusoidal wave at a frequency of 1,000 Hz; provided, however, that for amplifiers utilized as a component...

  16. A Standardized Soil Ecotoxicological Test Using Red Worms (Eisenia fetida).

    ERIC Educational Resources Information Center

    Paradise, Christopher J.

    2001-01-01

    Describes a simple, inexpensive test for soil contamination that can be used in a variety of courses to examine the effects of soil toxicity, to practice standardized laboratory procedures, to study experimental design and data analysis, or to investigate earthworm ecology. Presents background information along with details regarding equipment,…

  17. Residential wood-combustion-equipment standards and testing workshop

    SciTech Connect

    Not Available

    1980-12-01

    Explored are concerns related to proper safety, acceptable practices, and consumer protection as related to woodburning. Issues relating to safety and efficiency testing are discussed and the implications of these programs for the manufacturer, dealer and distributor are related. Also, consumer related problems regarding truth in advertising, product safety, building codes and standards, and insurance implications are dealt with. (LEW)

  18. Corporate Schooling Meets Corporate Media: Standards, Testing, and Technophilia

    ERIC Educational Resources Information Center

    Saltman, Kenneth J.

    2016-01-01

    Educational publishing corporations and media corporations in the United States have been converging, especially through the promotion of standardization, testing, and for-profit educational technologies. Media and technology companies--including News Corp, Apple, and Microsoft--have significantly expanded their presence in public schools to sell…

  19. Educators Questioning Timing of State Tests Reflecting Standards

    ERIC Educational Resources Information Center

    Gewertz, Catherine

    2013-01-01

    New York is ahead of most states in its work to design detailed curricula and professional development for the common core and to build brand-new tests to reflect them. What's unfolding in the Empire State as a result of that work illustrates the way the common standards can pressure changes in the education landscape, and torque the tensions…

  20. Standardized Testing and School Segregation: Like Tinder for Fire?

    ERIC Educational Resources Information Center

    Knoester, Matthew; Au, Wayne

    2017-01-01

    Recent research suggests that high-stakes standardized testing has played a negative role in the segregation of children by race and class in schools. In this article we review research on the overall effects of segregation, the positive and negative aspects of how desegregation plans were carried out following the 1954 Supreme Court decision…

  1. Invisibility: An Unintended Consequence of Standards, Tests, and Mandates

    ERIC Educational Resources Information Center

    Elish-Piper, Laurie; Matthews, Mona W.; Risko, Victoria J.

    2013-01-01

    As elementary and middle school teachers and students face standards, high-stakes testing, accountability, and one-size-fits all curricula, concerns have arisen that these practices limit the relevance and efficacy of teaching and learning. In this paper, we argue that such practices exact personal costs on students and the teachers expected to…

  2. Standardization in Cryogenic Insulation Systems Testing and Performance Data

    NASA Astrophysics Data System (ADS)

    Fesmire, James E.

    The close relationship between industrial energy use and cryogenics drives the need for optimized thermal insulation systems. Emerging cryofuels usage is enabled by adequate isolation of the liquid hydrogen or liquefied natural gas from the ambient environment. Thermal performance data for the total insulation system, as rendered, are essential for both engineering designs and cost-benefit decisions involving comparisons among alternatives. These data are obtained through rigorous testing with suitable apparatus and repeatable methods. Properly defined terminology, analysis, and reporting are also vital. Advances in cryogenic insulation test apparatus and methods have led to the recent addition of two new technical standards of ASTM International: C1774 - Standard Guide for Thermal Performance Testing of Cryogenic InsulationSystems and C740 - Standard Guide for Evacuated Reflective Cryogenic Insulation. Among the different techniques described in the new standards is the cylindrical boiloff calorimeter for absolute heat measurement over the full range of vacuum pressure conditions. The details of this apparatus, test method, and data analysis are given. Benchmark thermal performance data, including effective thermal conductivity (ke) and heat flux (q) for the boundary temperatures of 293 K and 77 K, are given for a number of different multilayer insulation (MLI) systems in comparison with data for other commonly-used insulation systems including perlite powder, fiberglass, polyurethane foam, and aerogels.

  3. Student Laptop Use and Scores on Standardized Tests

    ERIC Educational Resources Information Center

    Kposowa, Augustine J.; Valdez, Amanda D.

    2013-01-01

    Objectives: The primary objective of the study was to investigate the relationship between ubiquitous laptop use and academic achievement. It was hypothesized that students with ubiquitous laptops would score on average higher on standardized tests than those without such computers. Methods: Data were obtained from two sources. First, demographic…

  4. Precision tests of quantum chromodynamics and the standard model

    SciTech Connect

    Brodsky, S.J.; Lu, H.J.

    1995-06-01

    The authors discuss three topics relevant to testing the Standard Model to high precision: commensurate scale relations, which relate observables to each other in perturbation theory without renormalization scale or scheme ambiguity, the relationship of compositeness to anomalous moments, and new methods for measuring the anomalous magnetic and quadrupole moments of the W and Z.

  5. Assessing Cultural Validity in Standardized Tests in STEM Education

    ERIC Educational Resources Information Center

    Gassant, Lunes

    2013-01-01

    This quantitative ex post facto study examined how race and gender, as elements of culture, influence the development of common misconceptions among STEM students. Primary data came from a standardized test: the Digital Logic Concept Inventory (DLCI) developed by Drs. Geoffrey L. Herman, Michael C. Louis, and Craig Zilles from the University of…

  6. SMC Standard: Evaluation and Test Requirements for Liquid Rocket Engines

    DTIC Science & Technology

    2017-07-26

    increased analytical capability and experience base. The complexity of Space Shuttle Main Engine (SSME) and the long lasting ground test programs...SMC Standard SMC-S-025 26 July 2017 ------------------------ Supersedes: New Issue Air Force Space Command SPACE AND...of confidence in achieving successful space missions. Unless otherwise specified by the Procurement Authority, the requirements herein are intended

  7. The Truth about Students of Color and Standardized Tests

    ERIC Educational Resources Information Center

    Thompson, Gail L.

    2007-01-01

    Each year, when standardized test scores are published for California students, the same message tends to surface: In general, the scores of blacks and Latinos trail those of other groups, especially whites. This pattern emerges so often that it usually doesn't surprise educators or researchers. In the author's search to better understand the…

  8. Student Laptop Use and Scores on Standardized Tests

    ERIC Educational Resources Information Center

    Kposowa, Augustine J.; Valdez, Amanda D.

    2013-01-01

    Objectives: The primary objective of the study was to investigate the relationship between ubiquitous laptop use and academic achievement. It was hypothesized that students with ubiquitous laptops would score on average higher on standardized tests than those without such computers. Methods: Data were obtained from two sources. First, demographic…

  9. A Closer Look at Standardized Tests. Research Series No. 53.

    ERIC Educational Resources Information Center

    Freeman, Donald; And Others

    To help teachers in comparing the content of their instruction with the content of standardized tests, a taxonomy of elementary school mathematics was developed. The taxonomy consisted of matrix with three dimensions; (1) mode of presentation (how questions are asked); (2) nature of material (type of numbers or mathematical terms); and (3)…

  10. A Standardized Soil Ecotoxicological Test Using Red Worms (Eisenia fetida).

    ERIC Educational Resources Information Center

    Paradise, Christopher J.

    2001-01-01

    Describes a simple, inexpensive test for soil contamination that can be used in a variety of courses to examine the effects of soil toxicity, to practice standardized laboratory procedures, to study experimental design and data analysis, or to investigate earthworm ecology. Presents background information along with details regarding equipment,…

  11. Corporate Schooling Meets Corporate Media: Standards, Testing, and Technophilia

    ERIC Educational Resources Information Center

    Saltman, Kenneth J.

    2016-01-01

    Educational publishing corporations and media corporations in the United States have been converging, especially through the promotion of standardization, testing, and for-profit educational technologies. Media and technology companies--including News Corp, Apple, and Microsoft--have significantly expanded their presence in public schools to sell…

  12. A Closer Look at Standardized Tests. Research Series No. 53.

    ERIC Educational Resources Information Center

    Freeman, Donald; And Others

    To help teachers in comparing the content of their instruction with the content of standardized tests, a taxonomy of elementary school mathematics was developed. The taxonomy consisted of matrix with three dimensions; (1) mode of presentation (how questions are asked); (2) nature of material (type of numbers or mathematical terms); and (3)…

  13. Educators Questioning Timing of State Tests Reflecting Standards

    ERIC Educational Resources Information Center

    Gewertz, Catherine

    2013-01-01

    New York is ahead of most states in its work to design detailed curricula and professional development for the common core and to build brand-new tests to reflect them. What's unfolding in the Empire State as a result of that work illustrates the way the common standards can pressure changes in the education landscape, and torque the tensions…

  14. 40 CFR 790.55 - Modification of test standards or schedules during conduct of test.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 31 2010-07-01 2010-07-01 true Modification of test standards or schedules during conduct of test. 790.55 Section 790.55 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT (CONTINUED) PROCEDURES GOVERNING TESTING CONSENT AGREEMENTS AND TEST RULES Implementation,...

  15. Development of Standardized Material Testing Protocols for Prosthetic Liners.

    PubMed

    Cagle, John C; Reinhall, Per G; Hafner, Brian J; Sanders, Joan E

    2017-04-01

    A set of protocols was created to characterize prosthetic liners across six clinically relevant material properties. Properties included compressive elasticity, shear elasticity, tensile elasticity, volumetric elasticity, coefficient of friction (CoF), and thermal conductivity. Eighteen prosthetic liners representing the diverse range of commercial products were evaluated to create test procedures that maximized repeatability, minimized error, and provided clinically meaningful results. Shear and tensile elasticity test designs were augmented with finite element analysis (FEA) to optimize specimen geometries. Results showed that because of the wide range of available liner products, the compressive elasticity and tensile elasticity tests required two test maxima; samples were tested until they met either a strain-based or a stress-based maximum, whichever was reached first. The shear and tensile elasticity tests required that no cyclic conditioning be conducted because of limited endurance of the mounting adhesive with some liner materials. The coefficient of friction test was based on dynamic coefficient of friction, as it proved to be a more reliable measurement than static coefficient of friction. The volumetric elasticity test required that air be released beneath samples in the test chamber before testing. The thermal conductivity test best reflected the clinical environment when thermal grease was omitted and when liner samples were placed under pressure consistent with load bearing conditions. The developed procedures provide a standardized approach for evaluating liner products in the prosthetics industry. Test results can be used to improve clinical selection of liners for individual patients and guide development of new liner products.

  16. Does standard deviation matter? Using "standard deviation" to quantify security of multistage testing.

    PubMed

    Wang, Chun; Zheng, Yi; Chang, Hua-Hua

    2014-01-01

    With the advent of web-based technology, online testing is becoming a mainstream mode in large-scale educational assessments. Most online tests are administered continuously in a testing window, which may post test security problems because examinees who take the test earlier may share information with those who take the test later. Researchers have proposed various statistical indices to assess the test security, and one most often used index is the average test-overlap rate, which was further generalized to the item pooling index (Chang & Zhang, 2002, 2003). These indices, however, are all defined as the means (that is, the expected proportion of common items among examinees) and they were originally proposed for computerized adaptive testing (CAT). Recently, multistage testing (MST) has become a popular alternative to CAT. The unique features of MST make it important to report not only the mean, but also the standard deviation (SD) of test overlap rate, as we advocate in this paper. The standard deviation of test overlap rate adds important information to the test security profile, because for the same mean, a large SD reflects that certain groups of examinees share more common items than other groups. In this study, we analytically derived the lower bounds of the SD under MST, with the results under CAT as a benchmark. It is shown that when the mean overlap rate is the same between MST and CAT, the SD of test overlap tends to be larger in MST. A simulation study was conducted to provide empirical evidence. We also compared the security of MST under the single-pool versus the multiple-pool designs; both analytical and simulation studies show that the non-overlapping multiple-pool design will slightly increase the security risk.

  17. Fuel economy measurement road test procedure. SAE standard

    SciTech Connect

    1995-06-01

    This SAE Standard incorporates driving cycles that produce fuel consumption data relating to urban, suburban, and interstate driving patterns and is intended to be used to determine the relative fuel economy among vehicles and driving patterns under warmed-up conditions on test tracks, suitable roads, or chassis dynamometers. The cycle forms the basis of a cold-start test procedure described in SAE J1256. This document provides uniform testing procedures for measuring the fuel economy of light duty vehicles (motor vehicles designed primarily for transportation of persons or property and rated at 4,500 kg (10,000 lb) or less) on suitable roads.

  18. Study on method of data standardization in interferometric testing

    NASA Astrophysics Data System (ADS)

    Chen, Wei

    2010-10-01

    As a rule, Interferometers are used to test the figure in the polishing phase of optical component, it could provide advance tutor suggestion for manufacturing. It is unable to get the whole wave-front interferogram usually because phase-shift Interferometry is sensitive to environment vibration, so the exactly interference data of the optical surface could not be obtained. Various spatial point on the tested optical component will be given by calculation method about arithmetic average value of equal accuracy is provied. This paper describes the testing results of optical components in size Φ1200mm, it is proved the method could eliminate the vibration effectively and get the standardization data.

  19. Requirement for a standard language for test and ground operations

    NASA Technical Reports Server (NTRS)

    Medlock, J. R.

    1971-01-01

    The basic requirements for a standard test and checkout language applicable to all phases of the space shuttle test and ground operations are determined. The general characteristics outlined here represent the integration of selected ideas and concepts from operational elements within Kennedy Space Center (KSC) that represent diverse disciplines associated with space vehicle testing and launching operations. Special reference is made to two studies conducted in this area for KSC as authorized by the Advanced Development Element of the Office of Manned Space Flight (MSF). Information contained in reports from these studies have contributed significantly to the final selection of language features depicted in this technical report.

  20. Rapid inoculum standardization system: a novel device for standardization of inocula in antimicrobial susceptibility testing.

    PubMed Central

    Wicks, J H; Nelson, R L; Krejcarek, G E

    1983-01-01

    A rapid inoculum standardization system for antimicrobial susceptibility testing without incubation or the conventional turbidity adjustment has been developed. The rapid inoculum standardization system consists of a plastic rod with cross-hatched grooves on one end and a specific nutrient medium in a vial. The crosshatched grooves are designed to pick up and release a known number of viable microorganisms. In use, the end of the rod is touched to five colonies 1 to 2 mm in diameter from a primary agar plate, thus filling the grooves with bacteria. The rod is placed into the vial, and the bacteria are suspended in the medium by agitation with a Vortex Genie Mixer. The resulting suspension contains 5 X 10(7) to 5 X 10(8) CFU/ml for most gram-negative bacilli and gram-positive cocci. Microorganisms such as streptococci that have colonies less than 1 mm in diameter require as many as 10 colonies for an adequate inoculum suspension. Ninety-five commonly encountered bacterial isolates were tested in triplicate by agar plate counts. The resulting overall geometric mean of the agar plate counts was 1.52 X 10(8) CFU/ml for the species tested. We have found that the rapid inoculum standardization system provides a consistent and reproducible method for the standardization of inoculum for antimicrobial susceptibility testing without the incubation period and turbidity adjustment. Images PMID:6874902

  1. Roadmap for Testing and Validation of Electric Vehicle Communication Standards

    SciTech Connect

    Pratt, Richard M.; Tuffner, Francis K.; Gowri, Krishnan

    2012-07-12

    Vehicle to grid communication standards are critical to the charge management and interoperability among plug-in electric vehicles (PEVs), charging stations and utility providers. The Society of Automobile Engineers (SAE), International Organization for Standardization (ISO), International Electrotechnical Commission (IEC) and the ZigBee Alliance are developing requirements for communication messages and protocols. While interoperability standards development has been in progress for more than two years, no definitive guidelines are available for the automobile manufacturers, charging station manufacturers or utility backhaul network systems. At present, there is a wide range of proprietary communication options developed and supported in the industry. Recent work by the Electric Power Research Institute (EPRI), in collaboration with SAE and automobile manufacturers, has identified performance requirements and developed a test plan based on possible communication pathways using power line communication (PLC). Though the communication pathways and power line communication technology options are identified, much work needs to be done in developing application software and testing of communication modules before these can be deployed in production vehicles. This paper presents a roadmap and results from testing power line communication modules developed to meet the requirements of SAE J2847/1 standard.

  2. Methods to standardize dietary intake before performance testing.

    PubMed

    Jeacocke, Nikki A; Burke, Louise M

    2010-04-01

    When testing is undertaken to monitor an athlete's progress toward competition goals or the effect of an intervention on athletic outcomes, sport scientists should aim to minimize extraneous variables that influence the reliability, sensitivity, or validity of performance measurement. Dietary preparation is known to influence metabolism and exercise performance. Few studies, however, systematically investigate the outcomes of protocols that acutely control or standardize dietary intake in the hours and days before a performance trial. This review discusses the nutrients and dietary components that should be standardized before performance testing and reviews current approaches to achieving this. The replication of habitual diet or dietary practices, using tools such as food diaries or dietary recalls to aid compliance and monitoring, is a common strategy, and the use of education aids to help athletes achieve dietary targets offers a similarly low burden on the researcher. However, examination of dietary intake from real-life examples of these protocols reveals large variability between and within participants. Providing participants with prepackaged diets reduces this variability but can increase the burden on participants, as well as the researcher. Until studies can better quantify the effect of different protocols of dietary standardization on performance testing, sport scientists can only use a crude cost-benefit analysis to choose the protocols they implement. At the least, study reports should provide a more comprehensive description of the dietary-standardization protocols used in the research and the effect of these on the dietary intake of participants during the period of interest.

  3. Making OGC standards work - interoperability testing between meteorological web services

    NASA Astrophysics Data System (ADS)

    Siemen, Stephan; Little, Chris; Voidrot, Marie-Françoise

    2015-04-01

    The Meteorology and Oceanography Domain Working Group (Met Ocean DWG) is a community orientated working group of the Open Geospatial Consortium (OGC). The group does not directly revise OGC standards, but rather enables collaboration and communication between groups with meteorological and oceanographic interests. The Met Ocean DWG maintains a list of topics of interest to the meteorological and oceanographic communities for discussion, prioritises activities, defining feedback to the OGC Standards Working Groups (SWG), and performing interoperability experiments. One of the activities of the MetOcean DWG is the definition of Best Practices documents for common OGC standards, such as WMS and WCS. This is necessary since meteorological data has additional complexities in time, elevation and multi models runs including ensembles. To guarantee interoperability in practice it is important to test each other systems and ensure standards are implemented correctly, but also make recommendations to the DWG on the establishment of Best Practices guides. The European Working Group on Operational meteorological Workstations (EGOWS) was founded in 1990 as an informal forum for people working in the development field of operational meteorological workstations. The annual EGOWS meeting offers an excellent platform for exchanging information and furthering co-operation among the experts from NMS's, ECMWF and other institutes in the work with OGC standards. The presentation will give an update of the testing, which was being done during the June 2014 EGOWS meeting in Oslo and what has happen since. The presenter will also give an overview of the online resources to follow the tests and how interested parties can contribute to future interoperability tests.

  4. Standardized Testing Practices: Effect on Graduation and NCLEX® Pass Rates.

    PubMed

    Randolph, Pamela K

    The use standardized testing in pre-licensure nursing programs has been accompanied by conflicting reports of effective practices. The purpose of this project was to describe standardized testing practices in one states' nursing programs and discover if the use of a cut score or oversight of remediation had any effect on (a) first time NCLEX® pass rates, (b) on-time graduation (OTG) or (c) the combination of (a) and (b). Administrators of 38 nursing programs in one Southwest state were sent surveys; surveys were returned by 34 programs (89%). Survey responses were compared to each program's NCLEX pass rate and on-time graduation rate; t-tests were conducted for significant differences associated with a required minimum score (cut score) and oversight of remediation. There were no significant differences in NCLEX pass or on-time graduation rates related to establishment of a cut score. There was a significant difference when the NCLEX pass rate and on-time graduation rate were combined (Outcome Index "OI") with significantly higher program outcomes (P=.02.) for programs without cut-scores. There were no differences associated with faculty oversight of remediation. The results of this study do not support establishment of a cut-score when implementing a standardized testing. Copyright © 2016. Published by Elsevier Inc.

  5. Establishing a standardized therapeutic testing protocol for spinal muscular atrophy.

    PubMed

    Tsai, Li-Kai; Tsai, Ming-Shung; Lin, Tzer-Bin; Hwu, Wuh-Liang; Li, Hung

    2006-11-01

    Several mice models have been created for spinal muscular atrophy (SMA); however, there is still no standard preclinical testing system for the disease. We previously generated type III-specific SMA model mice, which might be suitable for use as a preclinical therapeutic testing system for SMA. To establish such a system and test its applicability, we first created a testing protocol and then applied it as a means to investigate the use of valproic acid (VPA) as a possible treatment for SMA. These SMA mice revealed tail/ear/foot deformity, muscle atrophy, poorer motor performances, smaller compound muscle action potential and lower spinal motoneuron density at the age of 9 to 12 months in comparison with age-matched wild-type littermate mice. In addition, VPA attenuates motoneuron death, increases spinal SMN protein level and partially normalizes motor function in SMA mice. These results suggest that the testing protocol developed here is well suited for use as a standardized preclinical therapeutic testing system for SMA.

  6. Standard methods for open hole tension testing of textile composites

    NASA Technical Reports Server (NTRS)

    Portanova, M. A.; Masters, J. E.

    1995-01-01

    Sizing effects have been investigated by comparing the open hole failure strengths of each of the four different braided architectures as a function of specimen thickness, hole diameter, and the ratio of specimen width to hole diameter. The data used to make these comparisons was primarily generated by Boeing. Direct comparisons of Boeing's results were made with experiments conducted at West Virginia University whenever possible. Indirect comparisons were made with test results for other 2-D braids and 3-D weaves tested by Boeing and Lockheed. In general, failure strength was found to decrease with increasing plate thickness, increase with decreasing hole size, and decreasing with decreasing width to diameter ratio. The interpretation of the sensitive to each of these geometrical parameters was complicated by scatter in the test data. For open hole tension testing of textile composites, the use of standard testing practices employed by industry, such as ASTM D5766 - Standard Test Method for Open Hole Tensile Strength of Polymer Matrix Composite Laminates should provide adequate results for material comparisons studies.

  7. Evaluation of lightweight wheelchairs using ANSI/RESNA testing standards.

    PubMed

    Gebrosky, Benjamin; Pearlman, Jonathan; Cooper, Rory A; Cooper, Rosemarie; Kelleher, Annmarie

    2013-01-01

    Lightweight wheelchairs are characterized by their low cost and limited range of adjustment. Our study evaluated three different folding lightweight wheelchair models using the American National Standards Institute/Rehabilitation Engineering Society of North America (ANSI/RESNA) standards to see whether quality had improved since the previous data were reported. On the basis of reports of increasing breakdown rates in the community, we hypothesized that the quality of these wheelchairs had declined. Seven of the nine wheelchairs tested failed to pass the multidrum test durability requirements. An average of 194,502 +/- 172,668 equivalent cycles was completed, which is similar to the previous test results and far below the 400,000 minimum required to pass the ANSI/RESNA requirements. This was also significantly worse than the test results for aluminum ultralight folding wheelchairs. Overall, our results uncovered some disturbing issues with these wheelchairs and suggest that manufacturers should put more effort into this category to improve quality. To improve the durability of lightweight wheelchairs, we suggested that stronger regulations be developed that require wheelchairs to be tested by independent and certified test laboratories. We also proposed a wheelchair rating system based on the National Highway Transportation Safety Administration vehicle crash ratings to assist clinicians and end users when comparing the durability of different wheelchairs.

  8. Solar collector test procedures: Development of a method to refer measured efficiencies to standardized test conditions

    NASA Astrophysics Data System (ADS)

    Thomas, W. C.

    1984-02-01

    An analytical procedure has been developed for referring collector efficiency measurements, obtained under different test conditions, to a common, or standard set of conditions. The procedure applies to flatplate liquid-type collectors of conventional tube-in-sheet design. The basic Hottel-Whillier-Bliss theory is used with appropriate extensions to account for serpentine flow configurations and glazing materials with high infrared transmittance. The procedure includes a systematic method for deriving two invariant collector parameters directly from ASHRAE Standard 93-77 test results. The two parameters selected are the plate absorptance and back loss coefficient. A set of standard conditions is recommended which corresponds to favorable test conditions.

  9. STANDARDIZATION OF CEBAF 12 GEV UPGRADE CAVITY TESTING

    SciTech Connect

    Tiffany Bass, G. Davis, Christiana Wilson, Mircea Stirbet

    2012-07-01

    CEBAF 12GeV upgrade project includes 80 new 7-cell cavities to form 10 cryomodules. Each cavity underwent RF qualification at 2.07K using a high power accelerating gradient test and an HOM survey in Jefferson Lab's Vertical Testing Area (VTA) before cavity string assembly. In order to ensure consistently high quality data, updated cavity testing procedures and analysis were implemented and used by a group of VTA operators. For high power tests, a cavity testing procedure was developed and used in conjunction with a LabVIEW program to collect the test data. Additionally while the cavity was at 2.07K, an HOM survey was performed using a network analyzer and a combination of Excel and Mathematica programs. Data analysis was standardized and an online logbook, Pansophy, was used for data storage and mining. The Pansophy system allowed test results to be easily summarized and searchable across all cavity tests. In this presentation, the CEBAF 12GeV upgrade cavity testing procedure, method for data analysis, and results reporting results will be discussed.

  10. Comparison of three standardized disc susceptibility testing methods for colistin.

    PubMed

    Tan, Thean Yen; Ng, Lily Siew Yong

    2006-10-01

    With increasing antibiotic resistance in Gram-negative bacteria, the use of the polymyxins has increased in recent years. Antibiotic disc susceptibility testing remains the most widely used method in clinical laboratories, but there is very little data on the accuracy of disc testing methods for colistin. In this study, the accuracy of three standardized methods of disc susceptibility testing for colistin was compared with agar dilution. A total of 228 clinical isolates of Acinetobacter spp., Pseudomonas aeruginosa and Enterobacteriaceae were included in the study. Isolates were tested by agar dilution for susceptibility to colistin, and results were compared with those obtained by three disc susceptibility testing methods (product insert based on CLSI methodology, British BSAC and French SFM). Colistin displayed good activity against Acinetobacter spp., Klebsiella spp. and Escherichia coli (MIC(90) 2 mg/L) but was less active against P. aeruginosa (MIC(90) 4 mg/L) and Enterobacter spp. (MIC(90) >or= 128 mg/L). Totally, 81%, 79% and 89% of colistin-resistant isolates were falsely reported as susceptible when tested by the product insert, BSAC and SFM testing methods, respectively. There were no false-resistant results. Disc susceptibility testing methods are unreliable at detecting colistin resistance. Dilution methods should be the method of choice for susceptibility testing of colistin.

  11. Harmonization of standard toxicity test methods used in North America

    SciTech Connect

    Ingersoll, C.G.; Dwyer, F.J.; Ankley, G.T.

    1995-12-31

    Over the past two years, Environment Canada (EC) and the US Environmental Protection Agency (EPA) have developed standard methods for conducting toxicity and bioaccumulation tests with freshwater, estuarine, and marine sediments. Existing ASTM methods were used as a basis to harmonize these methods for conducting testing with either field-collected or laboratory-spiked sediments. For freshwater toxicity tests, methods are described by EC and EPA for the amphipod Hyalella azteca and the midges Chironomus tentans and C. riparius. Endpoints include 10- to 14-d survival of growth. Methods are also described by EPA for conducting 28-d bioaccumulation tests with the oligochaete Lumbriculus variegatus. For estuarine and marine toxicity tests, methods are described for several amphipods (i.e., Rhepoxynius abronius, Ampelisca abdita, Eohaustorius estuarius, Leptocheirus plumulosus). Endpoints include 10-d survival and reburial. EC is also developing methods for conducting toxicity tests with Atlantic, Pacific, and Arctic Canadian species of polychaetes. Methods are described by EPA for conducting 28-d bioaccumulation tests with a variety of mollusks (i.e., Macoma spp.) and polychaetes (i.e., Nereis spp.). Slight inconsistencies in methods between freshwater and estuarine/marine testing or between EC and EPA testing include: (1) static vs. flow-through conditions, (2) sieving of sediment, (3) types and quantity of food, (4) age of test organisms, or (4) duration of the test and required endpoints. Additional research is in progress to: (1) develop chronic toxicity tests with amphipods and midges measuring survival, growth, or reproduction, (2) develop whole-sediment toxicity identification evaluation (TIE) procedures, (3) refine sediment spiking procedures, and (4) field-validate laboratory tests.

  12. Balancing standardized testing with personalized training in surgery

    PubMed Central

    Ahmed, Aadil; Abid, Muhammad Abbas; Bhatti, Nasir I

    2017-01-01

    Students pursuing a medical career in the US are subject to standardized testing at regular intervals. These standardized tests not only quantify the milestones students have already achieved, but also define the path for future achievements. The purpose of these examinations is to help students become self-directed, lifelong learners – an essential attribute of a medical professional. However, whether preparing for these examinations actually makes students such disciplined learners needs to be examined. Especially during residency training with its limited time and unpredictable exposure, trainees must learn in the most efficient way for their learning styles, and thus develop attributes that will be helpful to them in their medical career. In this review, we propose that a personalized, learner-centered approach tailored to residents’ educational needs and preferences can not only fulfill learning interests and objectives but also serve as a time-efficient and cost-effective approach for graduate medical education. PMID:28096706

  13. Balancing standardized testing with personalized training in surgery.

    PubMed

    Ahmed, Aadil; Abid, Muhammad Abbas; Bhatti, Nasir I

    2017-01-01

    Students pursuing a medical career in the US are subject to standardized testing at regular intervals. These standardized tests not only quantify the milestones students have already achieved, but also define the path for future achievements. The purpose of these examinations is to help students become self-directed, lifelong learners - an essential attribute of a medical professional. However, whether preparing for these examinations actually makes students such disciplined learners needs to be examined. Especially during residency training with its limited time and unpredictable exposure, trainees must learn in the most efficient way for their learning styles, and thus develop attributes that will be helpful to them in their medical career. In this review, we propose that a personalized, learner-centered approach tailored to residents' educational needs and preferences can not only fulfill learning interests and objectives but also serve as a time-efficient and cost-effective approach for graduate medical education.

  14. Tests and Problems of the Standard Model in Cosmology

    NASA Astrophysics Data System (ADS)

    López-Corredoira, Martín

    2017-06-01

    The main foundations of the standard Λ CDM model of cosmology are that: (1) the redshifts of the galaxies are due to the expansion of the Universe plus peculiar motions; (2) the cosmic microwave background radiation and its anisotropies derive from the high energy primordial Universe when matter and radiation became decoupled; (3) the abundance pattern of the light elements is explained in terms of primordial nucleosynthesis; and (4) the formation and evolution of galaxies can be explained only in terms of gravitation within a inflation + dark matter + dark energy scenario. Numerous tests have been carried out on these ideas and, although the standard model works pretty well in fitting many observations, there are also many data that present apparent caveats to be understood with it. In this paper, I offer a review of these tests and problems, as well as some examples of alternative models.

  15. Tests and Problems of the Standard Model in Cosmology

    NASA Astrophysics Data System (ADS)

    López-Corredoira, Martín

    2017-02-01

    The main foundations of the standard Λ CDM model of cosmology are that: (1) the redshifts of the galaxies are due to the expansion of the Universe plus peculiar motions; (2) the cosmic microwave background radiation and its anisotropies derive from the high energy primordial Universe when matter and radiation became decoupled; (3) the abundance pattern of the light elements is explained in terms of primordial nucleosynthesis; and (4) the formation and evolution of galaxies can be explained only in terms of gravitation within a inflation + dark matter + dark energy scenario. Numerous tests have been carried out on these ideas and, although the standard model works pretty well in fitting many observations, there are also many data that present apparent caveats to be understood with it. In this paper, I offer a review of these tests and problems, as well as some examples of alternative models.

  16. How Have State Level Standards-Based Tests Related to Norm-Referenced Tests in Alaska?.

    ERIC Educational Resources Information Center

    Fenton, Ray

    This overview of the Alaska system for test development, scoring, and reporting explored differences and similarities between norm-referenced and standards-based tests. The current Alaska testing program is based on legislation passed in 1997 and 1998, and is designed to meet the requirements of the federal No Child Left Behind Legislation. In…

  17. Test of a Power Transfer Model for Standardized Electrofishing

    USGS Publications Warehouse

    Miranda, L.E.; Dolan, C.R.

    2003-01-01

    Standardization of electrofishing in waters with differing conductivities is critical when monitoring temporal and spatial differences in fish assemblages. We tested a model that can help improve the consistency of electrofishing by allowing control over the amount of power that is transferred to the fish. The primary objective was to verify, under controlled laboratory conditions, whether the model adequately described fish immobilization responses elicited with various electrical settings over a range of water conductivities. We found that the model accurately described empirical observations over conductivities ranging from 12 to 1,030 ??S/cm for DC and various pulsed-DC settings. Because the model requires knowledge of a fish's effective conductivity, an attribute that is likely to vary according to species, size, temperature, and other variables, a second objective was to gather available estimates of the effective conductivity of fish to examine the magnitude of variation and to assess whether in practical applications a standard effective conductivity value for fish may be assumed. We found that applying a standard fish effective conductivity of 115 ??S/cm introduced relatively little error into the estimation of the peak power density required to immobilize fish with electrofishing. However, this standard was derived from few estimates of fish effective conductivity and a limited number of species; more estimates are needed to validate our working standard.

  18. The Proposed NASA Pyroshock Test Criteria Standard - Part I

    NASA Technical Reports Server (NTRS)

    Himelblau, H.; Kern, D. L.; Piersol, A. G.

    1996-01-01

    The National Aeronautics and Space Administration has traditionally left the task of specifying design and test criteria to each of the several NASA Centers. Faced with the wide variety fo resulting criteria used for resolving similar or identical problems, the NASA Office of Chief Engineer initiated a program to develop consistent NASA-wide standards if the various NASA Centers could agree to a set of common requirements.

  19. Standard Waste Box Lid Screw Removal Option Testing

    SciTech Connect

    Anast, Kurt Roy

    2016-03-11

    This report provides results from test work conducted to resolve the removal of screws securing the standard waste box (SWB) lids that hold the remediated nitrate salt (RNS) drums. The test work evaluated equipment and process alternatives for removing the 42 screws that hold the SWB lid in place. The screws were secured with a red Loctite thread locker that makes removal very difficult because the rivets that the screw threads into would slip before the screw could be freed from the rivet, making it impossible to remove the screw and therefore the SWB lid.

  20. Validity and Reliability of Baseline Testing in a Standardized Environment.

    PubMed

    Higgins, Kathryn L; Caze, Todd; Maerlender, Arthur

    2017-08-11

    The Immediate Postconcussion Assessment and Cognitive Testing (ImPACT) is a computerized neuropsychological test battery commonly used to determine cognitive recovery from concussion based on comparing post-injury scores to baseline scores. This model is based on the premise that ImPACT baseline test scores are a valid and reliable measure of optimal cognitive function at baseline. Growing evidence suggests that this premise may not be accurate and a large contributor to invalid and unreliable baseline test scores may be the protocol and environment in which baseline tests are administered. This study examined the effects of a standardized environment and administration protocol on the reliability and performance validity of athletes' baseline test scores on ImPACT by comparing scores obtained in two different group-testing settings. Three hundred-sixty one Division 1 cohort-matched collegiate athletes' baseline data were assessed using a variety of indicators of potential performance invalidity; internal reliability was also examined. Thirty-one to thirty-nine percent of the baseline cases had at least one indicator of low performance validity, but there were no significant differences in validity indicators based on environment in which the testing was conducted. Internal consistency reliability scores were in the acceptable to good range, with no significant differences between administration conditions. These results suggest that athletes may be reliably performing at levels lower than their best effort would produce.

  1. Standardized hydraulic fluid testing -- An overview and history

    SciTech Connect

    Jackson, J.M.; Marty, S.D.

    1997-12-31

    In order for a hydraulic fluid to be approved by the various pump manufacturers for use in their products, it must qualify for acceptance according to certain test methods. Chief among these tests are the Denison HF-0, the Vickers 35VQ25, and the John Deere Sundstrand piston pump test. The Denison HF-0 test evaluates hydraulic fluid performance based on flow, deposits, and wear in both a Denison P46 axial piston pump and a Denison T5D vane pump. Both pumps are run for 100 hours and are periodically disassembled for inspection. Obtaining satisfactory pump results is the largest step in the process for a fluid to qualify under the HF-0 Standard. In the past, the P46 and T5D pumps could be tested separately or bootstrapped with a 46 series motor to reduce horsepower requirements. The Vickers 35VQ25 test measures the anti-wear characteristics of a hydraulic oil according to cam ring and vane weight loss in a 35VQ25 vane pump. A minimum of three cartridges are tested for 50 hours each. The first three, or four of five cartridges, must perform satisfactorily in order for a fluid to pass this test. The John Deere piston pump test screens oils that cause corrosion of copper containing metals. A Sundstrand 22 series axial piston pump is operated for 25 hours. Water is then added to the test oil. The test is then run for 200 more hours. Over this time multiple parameters are monitored to determine the effect of the added water.

  2. Hydrogen Field Test Standard: Laboratory and Field Performance

    PubMed Central

    Pope, Jodie G.; Wright, John D.

    2015-01-01

    The National Institute of Standards and Technology (NIST) developed a prototype field test standard (FTS) that incorporates three test methods that could be used by state weights and measures inspectors to periodically verify the accuracy of retail hydrogen dispensers, much as gasoline dispensers are tested today. The three field test methods are: 1) gravimetric, 2) Pressure, Volume, Temperature (PVT), and 3) master meter. The FTS was tested in NIST's Transient Flow Facility with helium gas and in the field at a hydrogen dispenser location. All three methods agree within 0.57 % and 1.53 % for all test drafts of helium gas in the laboratory setting and of hydrogen gas in the field, respectively. The time required to perform six test drafts is similar for all three methods, ranging from 6 h for the gravimetric and master meter methods to 8 h for the PVT method. The laboratory tests show that 1) it is critical to wait for thermal equilibrium to achieve density measurements in the FTS that meet the desired uncertainty requirements for the PVT and master meter methods; in general, we found a wait time of 20 minutes introduces errors < 0.1 % and < 0.04 % in the PVT and master meter methods, respectively and 2) buoyancy corrections are important for the lowest uncertainty gravimetric measurements. The field tests show that sensor drift can become a largest component of uncertainty that is not present in the laboratory setting. The scale was calibrated after it was set up at the field location. Checks of the calibration throughout testing showed drift of 0.031 %. Calibration of the master meter and the pressure sensors prior to travel to the field location and upon return showed significant drifts in their calibrations; 0.14 % and up to 1.7 %, respectively. This highlights the need for better sensor selection and/or more robust sensor testing prior to putting into field service. All three test methods are capable of being successfully performed in the field and give

  3. Centaur Standard Shroud (CSS) Heated Altitude Jettison Tests

    NASA Technical Reports Server (NTRS)

    1975-01-01

    Altitude jettison tests, at a pressure of 20 torr (0.39 psia), were performed on the Centaur Standard Shroud (CSS) in a 100-foot diameter vacuum chamber. These jettison tests were part of a series of flight qualification tests which were performed on the new CSS system in preparation for the Helios and Viking missions. The first two tests subjected the CSS to a thermal cycle which simulated aerodynamic heating during ascent flight and the third test was performed at altitude pressure and in ambient temperature conditions. The purpose of the ambient temperature test was to provide base line data by which the separate machanical and thermal factors that influence jettison performance could be evaluated individually. The CSS was successfully jettisoned in each of the three tests. Also, thermal, stress, and structural deflection data were obtained which verified the analytical predictions of CSS response to flight environmental conditions and performance during jettison. In addition, much important information was obtained on critical CSS-to-payload clearance losses due to shell motions prior to and during jettison. The effectiveness of the separation system was successfully demonstrated at maximum flight temperatures.

  4. Suggested variations on standard carpal tunnel syndrome assessment tests.

    PubMed

    Lowe, Whitney

    2008-04-01

    Carpal tunnel syndrome is a highly prevalent peripheral neuropathy and manual therapy practitioners are likely to have clients presenting with this condition. There are no definitive diagnostic procedures that have shown a high degree of accuracy in identifying carpal tunnel syndrome. In addition, manual therapy practitioners do not have access to high-tech diagnostic procedures and therefore rely on physical examination methods to identify peripheral neuropathies like carpal tunnel syndrome. Several special orthopedic testing procedures have shown value in predicting the presence of carpal tunnel syndrome. Combining these standard testing procedures with neurodynamic principles allows for modifications to these tests making them more sensitive in identifying median nerve compression neuropathy in the carpal tunnel.

  5. A Hierarchical Model for Accuracy and Choice on Standardized Tests.

    PubMed

    Culpepper, Steven Andrew; Balamuta, James Joseph

    2015-11-25

    This paper assesses the psychometric value of allowing test-takers choice in standardized testing. New theoretical results examine the conditions where allowing choice improves score precision. A hierarchical framework is presented for jointly modeling the accuracy of cognitive responses and item choices. The statistical methodology is disseminated in the 'cIRT' R package. An 'answer two, choose one' (A2C1) test administration design is introduced to avoid challenges associated with nonignorable missing data. Experimental results suggest that the A2C1 design and payout structure encouraged subjects to choose items consistent with their cognitive trait levels. Substantively, the experimental data suggest that item choices yielded comparable information and discrimination ability as cognitive items. Given there are no clear guidelines for writing more or less discriminating items, one practical implication is that choice can serve as a mechanism to improve score precision.

  6. Reliability and validity of a standardized Mensendieck physiotherapy test (SMT).

    PubMed

    Haugstad, Gro Killi; Haugstad, Tor S; Kirste, Unni; Leganger, Siv; Hammel, Brit; Klemmetsen, Inger; Malt, Ulrik F

    2006-09-01

    A standardized test was developed to evaluate posture, movement, gait, sitting posture, and respiration of patients with psychosomatic disorders, based on the Mensendieck principles of observation and analysis of motor function. To validate the test and to make a comprehensive body examination of a defined group of patients, it was applied in a study of women with chronic pelvic pain (CPP, ICD10 F45.4). Fifteen women with CPP and 15 matched, healthy controls were examined. Test subjects were video recorded and scored by three experienced Mensendieck physical therapists, blinded with respect to the selection of subjects. Scores from 0 (for least functional movement) to 7 (optimal function) were assigned to each test person according to a test manual. High intraclass correlations (ICC1.1 [corrected] ranging from 0.82 to 0.97) were found among the testers. The standardized Mensendieck test (SMT) discriminated well between women with CPP and the controls (sensitivity 0.9, specificity 0.7, mean values). The CPP patients scored significantly lower than the controls in all subtests (p < 0.01). The largest difference in scores were found for gait (patients 2.70 +/- 0.11, vs. control, 5.60 +/- 0.09) and respiration (patients 2.88 +/- 0.14, vs. control, 5.63 +/- 0.10). The results indicate that, in the hands of experienced Mensendieck therapists, the SMT is a reliable tool, demonstrating a good discriminative validity. Furthermore, it may turn out to be a useful instrument in the evaluation of patients with somatoform disorders. It may also point toward a possible therapeutic treatment approach to patients with CPP.

  7. Challenges in the Standardization of Autoantibody Testing: a Comprehensive Review.

    PubMed

    Tozzoli, Renato; Villalta, Danilo; Bizzaro, Nicola

    2017-08-01

    Standardization and harmonization are complementary tools to achieve higher testing quality in laboratory medicine. Both are of great relevance and are strongly needed in autoimmune diagnostics, due to the impressive advance in basic research and technological development observed in this diagnostic field in recent years that has led to the introduction of many new tests and new analytical methods. It is, therefore, essential that this strong innovative thrust is translated into clinical practice in a coordinated way to avoid confusion and the risk of potentially harmful errors for the patient. However, while standardization of antibody assays is a very complex task, harmonization of procedures and behaviors is a more feasible target and should necessarily include all the phases of the total testing process-in the pre-analytical phase, appropriateness of test requests, harmonization of autoantibody terminology, and adoption of uniform nomenclature for laboratory tests; in the analytical phase, harmonization of measurements, and sharing of test profiles and diagnostic algorithms; and in the post-analytical phase, harmonization of data reporting, and criteria for interpreting immunoserological results, especially harmonization of units, reference intervals, decision limits, and definition and notification of critical values. We here provide and discuss some examples of harmonization initiatives related to anti-nuclear antibodies, TSH receptor, and anti-thyroid peroxidase antibodies and to antibodies associated with autoimmune hepatitis and with celiac disease. These initiatives could be the starting steps to achieve a wider consensus and a closer interaction among stakeholders in the path of autoimmune diagnostics harmonization to enhance clinical effectiveness and provide greater patient safety.

  8. Standard method of drop shatter test for coal

    SciTech Connect

    Not Available

    1980-01-01

    This method of drop shatter test covers the determination of the relative size stability and its complement, the friability, of sized coal. It affords a means of indicating the ability of coal to withstand breakage when subjected to handling at the mine and during transit to the consumer. The test is serviceable for ascertaining the similarity of coals in respect to size stability and friability rather than for determining values within narrow limits in order to emphasize their dissimilarity. This method is considered applicable for testing a selected single size of different coals, for testing different single sizes of the same coal, and for mixed sizes of the same or different coals. This test appears best suited for measuring the relative resistance to breakage of the larger sizes of coal when handled in thin layers such as from loader to mine car, from loading boom to railroad car, from shovel to chute, etc. While it may not be so well adapted for measuring the liability to breakage of coal when handled in mass, as in unloading open-bottom cars, emptying bins, etc., it is believed that the method of test will serve also to indicate the relative size stability of composite sizes of coal where, in commercial handling, the smaller sized pieces have a cushioning effect which tends to lessen the breakage of the larger pieces of coal. The values stated in inch-pound units are to be regarded as the standard.

  9. First heated jettison test on the Centaur standard shroud

    NASA Technical Reports Server (NTRS)

    1974-01-01

    The first in a planned series of heated jettison tests on the Centaur Standard Shround was conducted at NASA Plum Brook Station's Space Power Facility on November 19, 1973. The first 250-second portion of the test sequence involved heating the shroud with a specially-built fixture designed to provide a simulation of the heating environment encountered by the shroud during its ascent through the earth's atmosphere. The two heater halves, which were mounted on a rail system, were then retracted. This was followed by the jettison of the two shroud halves into catch nets positioned at 90 deg to the heater rails. The condition which made this test unique compared to the planned subsequent tests was the location of the maximum thermal line at 32 deg from the shroud separation plane. Information on the test hardware, configuration, and sequence is presented. Shroud thermal and deflection data encountered during the heating portion of the test sequence is compared with free-skin design temperatures in various graphical formats.

  10. Rare B decays as tests of the Standard Model

    NASA Astrophysics Data System (ADS)

    Blake, Thomas; Lanfranchi, Gaia; Straub, David M.

    2017-01-01

    One of the most interesting puzzles in particle physics today is that new physics is expected at the TeV energy scale to solve the hierarchy problem, and stabilises the Higgs mass, but so far no unambiguous signal of new physics has been found. Strong constraints on the energy scale of new physics can be derived from precision tests of the electroweak theory and from flavour-changing or CP-violating processes in strange, charm and beauty hadron decays. Decays that proceed via flavour-changing-neutral-current processes are forbidden at the lowest perturbative order in the Standard Model and are, therefore, rare. Rare b hadron decays are playing a central role in the understanding of the underlying patterns of Standard Model physics and in setting up new directions in model building for new physics contributions. In this article the status and prospects of this field are reviewed.

  11. Testing Conformance to Standards: Notes on the OGC CITE Initiative

    NASA Astrophysics Data System (ADS)

    Bigagli, Lorenzo; Vitale, Fabrizio

    2010-05-01

    In this work, we report on the issues and lessons learnt from our recent experience on assessing service compliance to OGC geospatial standards. Official conformity is warranted by the OGC Compliance & Interoperability Testing & Evaluation (CITE) initiative, through a centrally managed repository of tests, typically developed via initiatives funded by external sponsors. In particular, we have been involved in the ESA-led Heterogeneous Missions Accessibility Testbed (HMA-T) project. HMA-T objectives included the definition of specifications (and related compliance tests) for Earth Observation (EO) Product discovery and access. Our activities have focused on the EO and Catalogue of ISO Metadata (CIM) Extension Packages (EPs) of the ebRIM Application Profile (AP) of the Catalogue Service for the Web (CSW) OGC standard. Our main contributions have regarded the definition of Abstract Test Suites (ATS's) for the above specifications, as well as the development of Reference Implementations (RIs) and concrete Executable Test Suites (ETS's). According to the state-of-the-art, we have implemented the ETS's in Compliance Test Language (CTL), an OGC standard dialect of XML, and deployed the scripts onto the open-source Test Evaluation And Measurement (TEAM) Engine, the official OGC compliance test platform. A significant challenge was to accommodate legacy services, that can not support data publishing. Hence, we could not assume the presence of control test data, necessary for exhaustive assessment. To cope with this, we have proposed and experimented tests for assessing the internal coherence of a target service instance. Another issue was to assess the overall behavior of a target service instance. Although quite obvious, this requirement proved to be hard (if unviable) to implement, since the design of the OGC catalogue specification is multi-layered (i.e. comprised of EP, AP, binding and core functionalities) and, according to the current OGC rationale, ATS/ETS at each

  12. A first test of the framed standard model against experiment

    NASA Astrophysics Data System (ADS)

    Bordes, José; Chan, Hong-Mo; Tsou, Sheung Tsun

    2015-04-01

    The framed standard model (FSM) is obtained from the standard model by incorporating, as field variables, the frame vectors (vielbeins) in internal symmetry space. It gives the standard Higgs boson and 3 generations of quarks and leptons as immediate consequences. It gives moreover a fermion mass matrix of the form: m = mTαα†, where α is a vector in generation space independent of the fermion species and rotating with changing scale, which has already been shown to lead, generically, to up-down mixing, neutrino oscillations and mass hierarchy. In this paper, pushing the FSM further, one first derives to 1-loop order the RGE for the rotation of α, and then applies it to fit mass and mixing data as a first test of the model. With 7 real adjustable parameters, 18 measured quantities are fitted, most (12) to within experimental error or to better than 0.5 percent, and the rest (6) not far off. (A summary of this fit can be found in Table 2 of this paper.) Two notable features, both generic to FSM, not just specific to the fit, are: (i) that a theta-angle of order unity in the instanton term in QCD would translate via rotation into a Kobayashi-Maskawa phase in the CKM matrix of about the observed magnitude (J 10-5), (ii) that it would come out correctly that mu < md, despite the fact that mt ≫ mb, mc ≫ ms. Of the 18 quantities fitted, 12 are deemed independent in the usual formulation of the standard model. In fact, the fit gives a total of 17 independent parameters of the standard model, but 5 of these have not been measured by experiment.

  13. The Relationship between Deductive Reasoning Ability, Test Anxiety, and Standardized Test Scores in a Latino Sample

    ERIC Educational Resources Information Center

    Rich, John D., Jr.; Fullard, William; Overton, Willis

    2011-01-01

    One Hundred and Twelve Latino students from Philadelphia participated in this study, which examined the development of deductive reasoning across adolescence, and the relation of reasoning to test anxiety and standardized test scores. As predicted, 11th and ninth graders demonstrated significantly more advanced reasoning than seventh graders.…

  14. Towards a standardized reference point indentation testing procedure.

    PubMed

    Setters, Alexander; Jasiuk, Iwona

    2014-06-01

    We study the reference point indentation (RPI) technique which has a potential to directly measure mechanical properties of bone in patients. More specifically, we tested 6 month swine femoral cortical bone at mid-diaphysis region to investigate the effect of several testing variables on the RPI outputs. They include the force magnitude, preconditioning, variation within a sample and between samples, number of cycles, indentation surface (transverse versus longitudinal, polished versus unpolished), and micro-computed tomography radiation exposure. The force magnitude variation test shows that all RPI parameters increase linearly with the increasing force magnitude except the indentation distance increase which shows a cubic trend with a plateau for force magnitudes between 4N and 8N. Preconditioning does not affect the trends for a force magnitude variation test. The cycle variation test shows that most RPI parameters reach either a maximum or minimum at 15-20 cycles. Transverse surface measurements are more consistent than the longitudinal surface measurements, but a rough surface and periosteum on the longitudinal surface could account for this difference. Exposure to the micro-computed tomography radiation in general does not have effect on the RPI measurements. For the 6 month swine femoral cortical bone, testing using 6N force and 20 cycles with preconditioning on an unpolished longitudinal surface is recommended. This study advances our knowledge on how the RPI testing variables influence the RPI outputs and provides guidance on the RPI measurements. It may also serve as a framework for developing a standardized testing procedure for the RPI technique.

  15. Centaur Standard Shroud (CSS) full jettison test dynamic analysis

    NASA Technical Reports Server (NTRS)

    Kasper, H. J.; Donovan, R. M.

    1974-01-01

    During the space power facility jettison tests, the non-domed half of the Centaur standard shroud was allowed to completely separate from its hinge connection and was caught in a horizontal catch net. A rigid body dynamic analysis that was performed to predict the half shroud prior to and after net contact is presented. Analytical predictions of the longitudinal and circumferential bending moments imposed on the half shroud by the catch net and the net pressure on the half shroud corrugated skin are also presented.

  16. Key challenges for nanotechnology: Standardization of ecotoxicity testing.

    PubMed

    Cerrillo, Cristina; Barandika, Gotzone; Igartua, Amaya; Areitioaurtena, Olatz; Mendoza, Gemma

    2017-04-03

    Nanotechnology is expected to contribute to the protection of the environment, but many uncertainties exist regarding the environmental and human implications of manufactured nanomaterials (MNMs). Contradictory results have been reported for their ecotoxicity to aquatic organisms, which constitute one of the most important pathways for their entrance and transfer throughout the food web. The present review is focused on the international strategies that are laying the foundations of the ecotoxicological assessment of MNMs. Specific advice is provided on the preparation of MNM dispersions in the culture media of the organisms, which is considered a key factor to overcome the limitations in the standardization of the test methodologies.

  17. Standard methods for filled hole tension testing of textile composites

    NASA Technical Reports Server (NTRS)

    Portanova, M. A.; Masters, J. E.

    1995-01-01

    The effects of two test specimen geometry parameters, the specimen width and W/D ratio, on filled-hole tensile strength were determined for textile composite materials. Test data generated by Boeing and Lockheed on 2-D and 3-D braids, and 3-D weaves were used to make these evaluations. The investigation indicated that filled-hole tensile-strength showed little sensitivity to either parameter. Test specimen configurations used in open-hole tension tests, such as those suggested by ASTM D5766 - Standard Test Method for Open Hole Tensile Strength of Polymer Matrix Composite Laminates or those proposed by MIL-HDBK-17-lD should provide adequate results for material comparisons studies. Comparisons of the materials' open-hole and filled-hole tensile strengths indicated that the latter were generally lower than the former. The 3-D braids were the exception; their filled-hole strengths were unexpected larger than their open-hole strengths. However, these increases were small compared to the scatter in the data. Thus, filled hole tension may be a critical design consideration for textile composite materials.

  18. Standard Methods for Unnotched Tension Testing of Textile Composites

    NASA Technical Reports Server (NTRS)

    Portanova, M. A.

    1995-01-01

    An investigation was conducted by researchers at the Boeing Defense & Space Group to investigate the effects of specimen sizing on several braided textile materials. Test results from this and other test programs were compared in an effort to determine what effect, if any, specimen size has on elastic property measurements of unnotched tension test. In general, the unnotched tensile strength of 2-D braids was found to be insensitive to specimen width, length, or thickness effects. The results from this study suggest that standard testing methods used for tape materials may be sufficient for tension testing of textile composite materials. Specifically, the straight sided specimen geometry described in ASTM 3034, and used by Boeing, should provide acceptable results. Further experiments performed at Boeing and by other investigators on other textile architectures suggest similar results. Although specimen size studies were not conducted, failing stresses varied on the same order as those obtained with the 2-D materials. This suggests that the accuracy of the results were consistent with those obtained with the 2-D materials.

  19. The Weighted Airman Promotion System: Standardizing Test Scores

    DTIC Science & Technology

    2008-01-01

    u th o ri ze d Top 3/E6 ratio, inventory 1401206040 100 70 130 5R 2F 2G 3N 2M 2A 4J 4C 4P 4T 4B 1W 2T 3P 1T 4A 2S 5J 1A 1S1C 6F 4N 7S 4R 4E 1N 3A 3V...mitigated by standardizing WAPS test scores. There is also a concern about AFSC mix in the pool of future enlisted leaders. The Air Force fills about 400...impact of longevity. Because AFSCs comprise members with different mixes of gen- eral and specialty knowledge, because tests can vary in difficulty

  20. Centaur Standard Shroud Test in the Space Power Facility

    NASA Image and Video Library

    1973-08-21

    The Centaur Standard Shroud prepared for a jettison test in the Space Power Facility at the National Aeronautics and Space Administration’s (NASA) Plum Brook Station. In the late 1960s NASA engineers were planning the ambitious new Viking mission to send two rover vehicles to the surface of Mars. The Viking rovers were the heaviest payloads ever attempted by the Centaur second-stage rocket. Each Viking was over three times the weight of the Atlas-Centaur’s previous heaviest payload. Consequently, NASA engineers sought to mate the Centaur with the more powerful Titan III booster for the launches. General Dynamics created a new version of the Centaur, D-1T, specifically for Titan. The D-1T’s most significant modification was a completely new shroud designed by Lockheed, called the Centaur Standard Shroud. The conical two-piece covering encapsulated the payload to protect it against adverse conditions and improve the aerodynamics as the launch vehicle passed through the atmosphere. The shroud would be jettisoned when the vehicle reached the edge of space. A string of tests were conducted in Plum Brook’s Nuclear Rocket Dynamics and Control Facility (B-3) during 1973 and 1974. The new shroud performed flawlessly during the actual Viking launches in 1975. Viking 1 and 2 operated on the Martian surface until November 1982 and April 1980, respectively.

  1. Standardized childhood fitness percentiles derived from school-based testing.

    PubMed

    Carrel, Aaron L; Bowser, John; White, Doug; Moberg, D Paul; Weaver, Brian; Hisgen, Jon; Eickhoff, Jens; Allen, David B

    2012-07-01

    To develop a statewide school-based program of measuring and reporting cardiovascular fitness levels in children, and to create age- and sex-specific cardiovascular fitness percentile-based distribution curves. A pilot study validated cardiovascular fitness assessment with Progressive Aerobic Cardiovascular Endurance Run (PACER) testing as an accurate predictor of cardiovascular fitness measured by maximal oxygen consumption treadmill testing. Schools throughout the state were then recruited to perform PACER and body mass index (BMI) measurement and report de-identified data to a centralized database. Data on 20 631 individual students with a mean age 12.1 ± 2.0 years, BMI of 21.4 ± 5.1, and a cardiovascular fitness measured with PACER of 29.7 ± 18.2 laps (estimated maximal oxygen consumption of 36.5 mL/kg/min) were submitted for analysis. Standardized fitness percentiles were calculated for age and sex. This study demonstrates the feasibility of performing, reporting, and recording annual school-based assessments of cardiovascular fitness to develop standardized childhood fitness percentiles on the basis of age and sex. Such data can be useful in comparing populations and assessing initiatives that aim to improve childhood fitness. Because health consequences of obesity result from both adiposity and physical inactivity, supplementation of BMI measurement with tracking of cardiovascular fitness adds a valuable tool for large-scale health assessment. Published by Mosby, Inc.

  2. BSAC standardized disc susceptibility testing method (version 10).

    PubMed

    Andrews, J M; Howe, R A

    2011-12-01

    The BSAC standardized disc susceptibility testing method remains unchanged, but there are considerable changes to the interpretative criteria due to continuing harmonization with the European Committee on Antimicrobial Susceptibility Testing (EUCAST) MIC breakpoints. There are a number of agents for which interpretative criteria have been removed. These MIC and/or zone diameter breakpoints will be published on the BSAC web site as a 'Legacy' table; they may be used for research or comparative purposes, but are not recommended for clinical management. Notably, testing of staphylococci for susceptibility to glycopeptides by disc diffusion has been removed because this method has been found to be unreliable, particularly for the detection of low-level resistance; low-level vancomycin resistance in staphylococci is increasingly deemed to be of clinical relevance. The tables for anaerobes have been expanded to include MIC breakpoints that have been determined by EUCAST. There are currently no zone diameter breakpoints for these organisms and an MIC method is recommended if susceptibility testing is required.

  3. Standard Methods for Bolt-Bearing Testing of Textile Composites

    NASA Technical Reports Server (NTRS)

    Portanova, M. A.; Masters, J. E.

    1995-01-01

    The response of three 2-D braided materials to bolt bearing loading was evaluated using data generated by Boeing Defense and Space Group in Philadelphia, PA. Three test methods, stabilized single shear, unstabilized single shear, and double shear, were compared. In general, these textile composites were found to be sensitive to bolt bearing test methods. The stabilized single shear method yielded higher strengths than the unstabilized single shear method in all cases. The double shear test method always produced the highest strengths but these results may be somewhat misleading. It is therefore recommended that standard material comparisons be made using the stabilized single shear test method. The effects of two geometric parameters, W/D and e/D, were also studied. An evaluation of the effect of the specimen width (W) to hole diameter (D) ratio concluded that bolt bearing responses were consistent with open hole tension results. A W/D ratio of 6 or greater should be maintained. The proximity of the hole to the specimen edge significantly affected strength. In all cases, strength was improved by increasing the ratio of the distance from the hole center to the specimen edge (e) to the hole diameter (D) above 2. An e/D ratio of 3 or greater is recommended.

  4. Rifampin Drug Resistance Tests for Tuberculosis: Challenging the Gold Standard

    PubMed Central

    Aung, Kya J. M.; Bola, Valentin; Lebeke, Rossin; Hossain, Mohamed Anwar; de Rijk, Willem Bram; Rigouts, Leen; Gumusboga, Aysel; Torrea, Gabriela; de Jong, Bouke C.

    2013-01-01

    The rapid diagnosis of rifampin resistance is hampered by a reported insufficient specificity of molecular techniques for detection of rpoB mutations. Our objective for this study was to document the prevalence and prognostic value of rpoB mutations with unclear phenotypic resistance. The study design entailed sequencing directly from sputum of first failure or relapse patients without phenotypic selection and comparison of the standard retreatment regimen outcome, according to the mutation present. We found that among all rpoB mutations, the best-documented “disputed” rifampin resistance mutations (511Pro, 516Tyr, 526Asn, 526Leu, 533Pro, and 572Phe) made up 13.1% and 10.6% of all mutations in strains from Bangladesh and Kinshasa, respectively. Except for the 511Pro and 526Asn mutations, most of these strains with disputed mutations tested rifampin resistant in routine Löwenstein-Jensen medium proportion method drug susceptibility testing (DST; 78.7%), but significantly less than those with common, undisputed mutations (96.3%). With 63% of patients experiencing failure or relapse in both groups, there was no difference in outcome of first-line retreatment between patients carrying a strain with disputed versus common mutations. We conclude that rifampin resistance that is difficult to detect by the gold standard, phenotypic DST, is clinically and epidemiologically highly relevant. Sensitivity rather than specificity is imperfect with any rifampin DST method. Even at a low prevalence of rifampin resistance, a rifampin-resistant result issued by a competent laboratory may not warrant confirmation, although the absence of a necessity for confirmation needs to be confirmed for molecular results among new cases. However, a result of rifampin susceptibility should be questioned when suspicion is very high, and further DST using a different system (i.e., genotypic after phenotypic testing) would be fully justified. PMID:23761144

  5. On the factor structure of standardized educational achievement tests.

    PubMed

    Gaffney, Tim W; Cudeck, Robert; Ferrer, Emilio; Widaman, Keith F

    2010-01-01

    This research analyzed the factor structure at both the item- and subtest-level of California's norm- and criterion-referenced standardized educational achievement tests (SEAT) used in that state's high-stakes educational accountability assessments. It was shown through full information factor analysis and multidimensional IRT models (e.g., TESTFACT and NOHARM) that, at the item-level, SEATs are invariably highly unidimensional (i.e., they appear to tap a unidimensional theta scale) even when items representing such diverse content areas such as English, science, mathematics, and history are analyzed simultaneously as a single measure. These item-level factors also accounted for a relatively small proportion (1/4 to 1/3) of the variance. It was also shown that, when these tests are analyzed using more reliable indicators such as subtests, a much richer factor structure emerged that accounted for a larger portion (about 2/3) of the total common variance. As expected, these factor structure configurations (and underlying dimensionality) were preserved across the item- and subtest-levels. However, the factors emerging from both the item- and subtest-level analyses were highly correlated and produced strong second-order and general factors. The meaning underlying these results was examined, along with their implications with respect to the assumptions underlying modern approaches to test calibration, scaling, and score interpretation.

  6. Standard-B hydrogen monitoring system acceptance test report

    SciTech Connect

    Tran, T.T.

    1994-09-08

    Test Engineering was supported by Tank Waste Remediation System Safety Programs Engineering Support in the performance of an Acceptance Test Procedure (ATP) to qualify the Standard Hydrogen Monitoring System (SHMS) cabinet installed on waste tank 241-SY-103. The June 7, 1994 ATP performance was controlled by West Waste Tank Farms work package 2W-94-322. The ATP was conducted following the final installation of a second Whittaker electro-chemical hydrogen monitoring cell. The cabinet had been sited on the waste tank two years earlier, but never connected to the exhaust vent header to monitor Tank 241-SY-103 vent header exhaust gases. The cabinet was then modified, to remove two undesirable solid state hydrogen monitors and install a second Whittaker electro-chemical hydrogen monitoring sensor and signal conditioning. The ATP was used to assure that the cabinet wiring and components were properly installed and labeled and that the two years without operation had not seriously damaged the installed equipment. Electrical and pneumatic tests were performed to assure system integrity.

  7. Test Of Astronomy STandards TOAST Survey of K-12 Teachers

    NASA Astrophysics Data System (ADS)

    Slater, Timothy F.; Slater, Stephanie; Stork, Debra J.

    2015-01-01

    Discipline-based education research in astronomy is focused on understanding the underlying mental mechanisms used by students when learning astronomy and teachers when teaching astronomy. Systematic surveys of K-12 teacher' knowledge in the domain of astronomy are conducted periodically in order to better focus and improve professional development. These surveys are most often done when doing contemporary needs assessments or when new assessment instruments are readily available. Designed by Stephanie J. Slater of the CAPER Center for Astronomy & Physics Education Research, the 29-item multiple-choice format Test Of Astronomy STandards - TOAST is a carefully constructed, criterion-referenced instrument constructed upon a solid list of clearly articulated and widely agreed upon learning objectives. The targeted learning concepts tightly align with the consensus learning goals stated by the American Astronomical Society - Chair's Conference on ASTRO 101, the American Association of the Advancement of Science's Project 2061 Benchmarks, and the National Research Council's 1996 National Science Education Standards. Without modification, the TOAST is also aligned with the significantly less ambitious 2013 Next Generation Science Standards created by Achieve, Inc., under the auspices of the National Research Council. This latest survey reveals that K-12 teachers still hold many of the same fundamental misconceptions uncovered by earlier surveys. This includes misconceptions about the size, scale, and structure of the cosmos as well as misconceptions about the nature of physical processes at work in astronomy. This suggests that professional development in astronomy is still needed and that modern curriculum materials are best served if they provide substantial support for implementation.

  8. Standard test method for saponification number of petroleum products

    SciTech Connect

    Not Available

    1980-01-01

    This method covers the determination of the amount of constituents in petroleum products that will saponify under the conditions of the test. Since compounds of sulfur, phosphorus, the halogens, and certain other elements which are sometimes added to petroleum products also consume alkali and acids, the results obtained indicate the effect of these extraneous materials in addition to the saponifiable material present. Results on products containing such materials, on used internal-combustion-engine crank-case oils, and on used turbine oils must be interpreted in this respect. Summary of method: a known weight of the sample, dissolved in methylethylketone is heated with a known amount of alcoholic potassium hydroxide (KOH). The excess alkali is titrated with standard acid and the saponification number calculated.

  9. What standardized tests ignore when assessing individuals with neurodevelopmental disorders

    PubMed Central

    Tenorio, Marcela; Campos, Ruth; Karmiloff-Smith, Annette

    2016-01-01

    In this article we critique the use of traditional standardized tests for the cognitive assessment of children with neurodevelopmental disorders. Limitations stem from the lack of integrating (a) results from research into the psychological functioning of these populations, and (b) the main arguments underlying models of human development. We identify four secondary issues in this discussion: (1) these instruments cannot be used with children who have particularly low cognitive functioning; (2) little or no variance in the scores obtained by individuals with neurodevelopmental disorders, because all are at floor, prevent adequate interpretations; (3) measurements do not provide information useful for the design of intervention strategies; and (4) different cognitive and/or neural processes may underlie behavioural scores ‘in the normal range’. Rethinking traditional assessment methods in favour of technologically-mediated games yields new cognitive assessment possibilities. PMID:26778874

  10. Comparison of RFFIT tests with different standard sera and testing procedures.

    PubMed

    Yu, Peng-cheng; Noguchi, Akira; Inoue, Satoshi; Tang, Qing; Rayner, Simon; Liang, Guo-dong

    2012-06-01

    The World Health Organization (WHO) standard assay for determining antibody level is the rapid fluorescent focus inhibition test (RFFIT) and is used to determine the degree of immunity after vaccination against rabies. To compare the difference in RFFIT results between the laboratories of The National Institute of Infectious Disease in Japan (NIID) and the Chinese Centre for Disease Control (CCDC) as well the influence of the choice of standard serum (STD) for the detection, the two laboratories detection methods were simultaneously manipulated by RFFIT. The reference serums used in NIID and the WHO standard serum used in CCDC were compared in the same RFFIT detection to determine the titer of four sera samples C1, S1, S2 and S4 in parallel, and the titers of the detected sera samples were calculated using the standard formula for neutralizing antibody titer. No significant difference was found in RFFIT methods from the two laboratories and the RFFIT testing procedures of the two laboratories have good consistency. However, different titers were obtained with the tentative internal standard serum (TI-STD) produced by adjusting to 2.0 IU of WHO standard serum in NIID and the WHO STD. The titer determined with the TI-STD was higher than that determined with WHO STD, This difference appears to be significant and requires further investigation.

  11. Developing standards for chromosomal microarray testing counselling in paediatrics.

    PubMed

    Godfrey, Emma; Clark, Phillipa

    2014-06-01

    Chromosomal microarray testing (CMA) generally aids paediatric genetic diagnosis. However, pre-CMA counselling is important as results can be ambiguous, generate uncertainty and raise ethical issues. We developed standards for counselling and giving families results; using these we evaluated practice for children seen by the Auckland Developmental Paediatric team in 2011. Pretest discussion was documented in 14 of 28 subjects and potential outcomes in 4of 28. 8 of 28 received information leaflets, 1 of 28 gave signed consent. 3 of 3 with abnormal results and 4 of 5 with variants of unknown significance (VOUS) were offered clinical genetics referral. 8 of 20 families with normal results were written to; two with abnormal results were informed face-to-face and one in writing; most VOUS were communicated by phone, voicemail or letter. CMA testing requires clear patient information sheets and in-depth pretest discussion for informed consent, timely feedback of results and genetics referral as appropriate. Authoritative guidelines and training are needed to strengthen CMA counselling. ©2014 Foundation Acta Paediatrica. Published by John Wiley & Sons Ltd.

  12. 76 FR 39018 - Commercial Driver's License Testing and Commercial Learner's Permit Standards; Corrections

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-05

    ... License Testing and Commercial Learner's Permit Standards; Corrections AGENCY: Federal Motor Carrier... establishes new minimum Federal standards for States to issue the commercial learner's permit (CLP). Since the...

  13. Standards for thyroid laboratory testing, and cognitive functions after menopause

    PubMed Central

    Bejga, Przemysław; Witczak, Mariusz; Łyszcz, Robert; Makara-Studzinska, Marta

    2014-01-01

    Introduction The aim of the study is to analyze the relationship between normative and non-normative thyroid tests (TSH, TT4, TT3, FT3, FT4, anti-TPO, anti-Tg, AB-TSHR) and the level of cognitive functions in postmenopausal women. Material and methods The study group consisted of 383 women from south-eastern Poland, aged 50-65 years. The cognitive functions were evaluated using a diagnostic instrument – Central Nervous System – Vital Signs (CNS-VS). Blood was collected for determination of the following parameters: TSH, TT4, TT3, FT3, FT4, anti-TPO, anti-Tg, AB-TSHR. Results There were significant differences in NCI, executive functions, psychomotor speed, reaction time, complex attention and cognitive flexibility, depending on the normative and non-normative level of TSH. Women whose level of FT3 was at the lower limit of the normal range obtained poorer results in psychomotor speed, while subjects with levels of FT4 below the standard achieved significantly lower scores for this function. The relationship between NCI and cognitive functions, and the normative and non-normative anti-TPO results, showed significant differences in verbal memory, visual memory, processing speed and reaction time. The level of AB-TSHR reported as normal or above the norm significantly differentiated from the results of NCI, processing speed, executive functions, psychomotor speed, complex attention and cognitive flexibility. Conclusions Concentrations of laboratory parameters assessing the thyroid function located within the upper limits of the normal range showed a different relationship with the cognitive performance than concentrations located within the lower limits of the standard. PMID:26327860

  14. What Are Standardized Literacy and Numeracy Tests Testing? Evidence of the Domain-General Contributions to Students' Standardized Educational Test Performance

    ERIC Educational Resources Information Center

    Howard, Steven J.; Woodcock, Stuart; Ehrich, John; Bokosmaty, Sahar

    2017-01-01

    Background: A fundamental aim of standardized educational assessment is to achieve reliable discrimination between students differing in the knowledge, skills and abilities assessed. However, questions of the purity with which these tests index students' genuine abilities have arisen. Specifically, literacy and numeracy assessments may also engage…

  15. What Are Standardized Literacy and Numeracy Tests Testing? Evidence of the Domain-General Contributions to Students' Standardized Educational Test Performance

    ERIC Educational Resources Information Center

    Howard, Steven J.; Woodcock, Stuart; Ehrich, John; Bokosmaty, Sahar

    2017-01-01

    Background: A fundamental aim of standardized educational assessment is to achieve reliable discrimination between students differing in the knowledge, skills and abilities assessed. However, questions of the purity with which these tests index students' genuine abilities have arisen. Specifically, literacy and numeracy assessments may also engage…

  16. Refractory Metal Heat Pipe Life Test - Test Plan and Standard Operating Procedures

    NASA Technical Reports Server (NTRS)

    Martin, J. J.; Reid, R. S.

    2010-01-01

    Refractory metal heat pipes developed during this project shall be subjected to various operating conditions to evaluate life-limiting corrosion factors. To accomplish this objective, various parameters shall be investigated, including the effect of temperature and mass fluence on long-term corrosion rate. The test series will begin with a performance test of one module to evaluate its performance and to establish the temperature and power settings for the remaining modules. The performance test will be followed by round-the-clock testing of 16 heat pipes. All heat pipes shall be nondestructively inspected at 6-month intervals. At longer intervals, specific modules will be destructively evaluated. Both the nondestructive and destructive evaluations shall be coordinated with Los Alamos National Laboratory. During the processing, setup, and testing of the heat pipes, standard operating procedures shall be developed. Initial procedures are listed here and, as hardware is developed, will be updated, incorporating findings and lessons learned.

  17. The OSU Hydro-Mechanical Fuel Test Facility: Standard Fuel Element Testing

    SciTech Connect

    Wade R. Marcum; Brian G. Woods; Ann Marie Phillips; Richard G. Ambrosek; James D. Wiest; Daniel M. Wachs

    2001-10-01

    Oregon State University (OSU) and the Idaho National Laboratory (INL) are currently collaborating on a test program which entails hydro-mechanical testing of a generic plate type fuel element, or standard fuel element (SFE), for the purpose of qualitatively demonstrating mechanical integrity of uranium-molybdenum monolithic plates as compared to that of uranium aluminum dispersion, and aluminum fuel plates due to hydraulic forces. This test program supports ongoing work conducted for/by the fuel development program and will take place at OSU in the Hydro-Mechanical Fuel Test Facility (HMFTF). Discussion of a preliminary test matrix, SFE design, measurement and instrumentation techniques, and facility description are detailed in this paper.

  18. [Standardization of serological tests for Chagas disease: an immunoenzymatic test for blood donors triage].

    PubMed

    Ferreira, A W; Belem, Z R; Moura, M E; Camargo, M E

    1991-01-01

    In the serological diagnosis of Chagas disease large divergences may be found even between laboratories with experience, as a consequence of different criteria for the standardization of the tests. To standardize a immunoenzymatic test developed primarily for screening blood donors, serum panels were carefully chosen so as to best represent chagasic and non-chagasic populations. Produced for the highest sensibility and stability, the new reagent (bioELISA cruzi, Biolab Diagnóstica S/A, Brasil), was tested in serum from 1648 patients 219 with Chagas disease and 104 with other diseases, plus a comparison with well standardized immunofluorescence and hemagglutination tests in 1325 sera. In the immunoenzymatic assays, the cut off was indicated by the absorbance value of a chagasic serum showing a minimal reactivity. ELISA sensibility was 0.9954 and specificity 0.9969, as co-negativity. False positive results were absent with sera from syphilis, toxoplasmosis, mononucleosis and high titered sera for antistreptolysin 0 antibodies. However they were seen in 5 to 15 cases of tegumentar leishmaniasis, 1 of 12 Kala-azar 1 of 15 rheumatoid arthritis and 1 of 12 systemic lupus erythematosus. The high sensibility in chagasics and high specificity in the general population indicate the confiability of the immunoenzymatic assay for screening blood donors and even to confirm a clinical diagnosis of Chagas' disease.

  19. Standardized Testing Program for Solid-State Hydrogen Storage Technologies

    SciTech Connect

    Miller, Michael A.; Page, Richard A.

    2012-07-30

    In the US and abroad, major research and development initiatives toward establishing a hydrogen-based transportation infrastructure have been undertaken, encompassing key technological challenges in hydrogen production and delivery, fuel cells, and hydrogen storage. However, the principal obstacle to the implementation of a safe, low-pressure hydrogen fueling system for fuel-cell powered vehicles remains storage under conditions of near-ambient temperature and moderate pressure. The choices for viable hydrogen storage systems at the present time are limited to compressed gas storage tanks, cryogenic liquid hydrogen storage tanks, chemical hydrogen storage, and hydrogen absorbed or adsorbed in a solid-state material (a.k.a. solid-state storage). Solid-state hydrogen storage may offer overriding benefits in terms of storage capacity, kinetics and, most importantly, safety.The fervor among the research community to develop novel storage materials had, in many instances, the unfortunate consequence of making erroneous, if not wild, claims on the reported storage capacities achievable in such materials, to the extent that the potential viability of emerging materials was difficult to assess. This problem led to a widespread need to establish a capability to accurately and independently assess the storage behavior of a wide array of different classes of solid-state storage materials, employing qualified methods, thus allowing development efforts to focus on those materials that showed the most promise. However, standard guidelines, dedicated facilities, or certification programs specifically aimed at testing and assessing the performance, safety, and life cycle of these emergent materials had not been established. To address the stated need, the Testing Laboratory for Solid-State Hydrogen Storage Technologies was commissioned as a national-level focal point for evaluating new materials emerging from the designated Materials Centers of Excellence (MCoE) according to

  20. Standard Hydrogen Test Protocols for the NREL Sensor Testing Laboratory (Brochure)

    SciTech Connect

    Not Available

    2011-12-01

    This brochure summarizes the test protocols used in the NREL Hydrogen Sensor Test Laboratory for the quantitative assessment of critical analytical performance specifications for hydrogen sensors. Researchers at the NREL Hydrogen Safety Sensor Test Laboratory developed a variety of test protocols to quantitatively assess critical analytical performance specifications for hydrogen sensors. Many are similar to, but typically more rigorous than, the test procedures mandated by ISO Standard 26142 (Hydrogen Detector for Stationary Applications). Specific protocols were developed for linear range, short-term stability, and the impact of fluctuations in temperature (T), pressure (P), relative humidity (RH), and chemical environment. Specialized tests (e.g., oxygen requirement) may also be performed. Hydrogen safety sensors selected for evaluation are subjected to a thorough regimen of test protocols, as described. Sensor testing is performed at NREL on custom-built sensor test fixtures. Environmental parameters such as T, P, RH, and gas composition are rigorously controlled and monitored. The NREL evaluations are performed on commercial hydrogen detectors, on emerging sensing technologies, and for end users to validate sensor performance for specific application needs. Test results and data are shared with the manufacturer or client via summary reports, teleconference phone calls, and, when appropriate, site visits to manufacturer facilities. Client representatives may also monitor NREL's operation while their technologies are being tested. Manufacturers may use test data to illustrate the analytical capability of their technologies and, more importantly, to guide future developments. NREL uses the data to assess technology gaps and deployment considerations. Per NREL Sensor Testing Laboratory policy, test results are treated as proprietary and are not shared with other manufacturers or other entities without permission. The data may be used by NREL in open publications

  1. Assessment of and standardization for quantitative nondestructive test

    NASA Technical Reports Server (NTRS)

    Neuschaefer, R. W.; Beal, J. B.

    1972-01-01

    Present capabilities and limitations of nondestructive testing (NDT) as applied to aerospace structures during design, development, production, and operational phases are assessed. It will help determine what useful structural quantitative and qualitative data may be provided from raw materials to vehicle refurbishment. This assessment considers metal alloys systems and bonded composites presently applied in active NASA programs or strong contenders for future use. Quantitative and qualitative data has been summarized from recent literature, and in-house information, and presented along with a description of those structures or standards where the information was obtained. Examples, in tabular form, of NDT technique capabilities and limitations have been provided. NDT techniques discussed and assessed were radiography, ultrasonics, penetrants, thermal, acoustic, and electromagnetic. Quantitative data is sparse; therefore, obtaining statistically reliable flaw detection data must be strongly emphasized. The new requirements for reusable space vehicles have resulted in highly efficient design concepts operating in severe environments. This increases the need for quantitative NDT evaluation of selected structural components, the end item structure, and during refurbishment operations.

  2. Coordinate measuring machine test standard apparatus and method

    DOEpatents

    Bieg, Lothar F.

    1994-08-30

    A coordinate measuring machine test standard apparatus and method which iudes a rotary spindle having an upper phase plate and an axis of rotation, a kinematic ball mount attached to the phase plate concentric with the axis of rotation of the phase plate, a groove mounted at the circumference of the phase plate, and an arm assembly which rests in the groove. The arm assembly has a small sphere at one end and a large sphere at the other end. The small sphere may be a coordinate measuring machine probe tip and may have variable diameters. The large sphere is secured in the kinematic ball mount and the arm is held in the groove. The kinematic ball mount includes at least three mounting spheres and the groove is an angular locating groove including at least two locking spheres. The arm may have a hollow inner core and an outer layer. The rotary spindle may be a ratio reducer. The device is used to evaluate the measuring performance of a coordinate measuring machine for periodic recertification, including 2 and 3 dimensional accuracy, squareness, straightness, and angular accuracy.

  3. Coordinate measuring machine test standard apparatus and method

    DOEpatents

    Bieg, L.F.

    1994-08-30

    A coordinate measuring machine test standard apparatus and method are disclosed which includes a rotary spindle having an upper phase plate and an axis of rotation, a kinematic ball mount attached to the phase plate concentric with the axis of rotation of the phase plate, a groove mounted at the circumference of the phase plate, and an arm assembly which rests in the groove. The arm assembly has a small sphere at one end and a large sphere at the other end. The small sphere may be a coordinate measuring machine probe tip and may have variable diameters. The large sphere is secured in the kinematic ball mount and the arm is held in the groove. The kinematic ball mount includes at least three mounting spheres and the groove is an angular locating groove including at least two locking spheres. The arm may have a hollow inner core and an outer layer. The rotary spindle may be a ratio reducer. The device is used to evaluate the measuring performance of a coordinate measuring machine for periodic recertification, including 2 and 3 dimensional accuracy, squareness, straightness, and angular accuracy. 5 figs.

  4. 40 CFR 80.9 - Rounding a test result for determining conformance with a fuels standard.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... in the ASTM standard practice, ASTM E 29-02 e1, entitled, “Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications”. (b) ASTM standard practice, E 29-02 e1...

  5. 40 CFR 80.9 - Rounding a test result for determining conformance with a fuels standard.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... in the ASTM standard practice, ASTM E 29-02∈ 1, entitled, “Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications”. (b) ASTM standard practice, E 29-02∈ 1...

  6. 40 CFR 80.9 - Rounding a test result for determining conformance with a fuels standard.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... in the ASTM standard practice, ASTM E 29-02∈ 1, entitled, “Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications”. (b) ASTM standard practice, E 29-02∈ 1...

  7. Standard reference material for Her2 testing: report of a National Institute of Standards and Technology-sponsored Consensus Workshop.

    PubMed

    Hammond, M Elizabeth H; Barker, Peter; Taube, Sheila; Gutman, Steven

    2003-06-01

    A workshop was sponsored by the National Institute of Standards and Technology, the Cancer Diagnosis Program of the National Cancer Institute, the Food and Drug Administration, and the College of American Pathologists to address the need for a reference material for Her2 gene protein testing. It was agreed that such a standard was desirable and necessary to ensure the reliability of Her2 testing to qualify patients for trastuzumab therapy. Two standards consisting of well characterized cell lines will be produced, 1 that will be a National Institute of Standards and Technology-certifiable standard, and 1 that will be a commercially developed standard for use in all Her2 testing. It was also agreed that all Her2 testing must be performed on samples fixed only in 10% buffered formalin, as specified in the Food and Drug Administration-approved testing methods. Participants agreed to plan strategies to educate pathologists, clinicians, and laboratories about the need and use of such a standard. A National Committee for Clinical Laboratory Standards guideline for the use of the standard reference material will be created to facilitate this process.

  8. The fabrication, testing and delivery of boron/epoxy and graphite/epoxy nondestructive test standards

    NASA Technical Reports Server (NTRS)

    Pless, W. M.; Lewis, W. H.

    1971-01-01

    A description is given of the boron/epoxy and graphite/epoxy nondestructive test standards which were fabricated, tested and delivered to the National Aeronautics and Space Administration. Detailed design drawings of the standards are included to show the general structures and the types and location of simulated defects built into the panels. The panels were laminates with plies laid up in the 0 deg, + or - 45 deg, and 90 deg orientations and containing either titanium substrates or interlayered titanium perforated shims. Panel thickness was incrementally stepped from 2.36 mm (0.093 in.) to 12.7 mm (0.500 in.) for the graphite/epoxy standards, and from 2.36 mm (0.093 in.) to 6.35 mm (0.25 in.) for the boron/epoxy standards except for the panels with interlayered shims which were 2.9 mm (0.113 in.) maximum thickness. The panel internal conditions included defect free regions, resin variations, density/porosity variations, cure variations, delaminations/disbonds at substrate bondlines and between layers, inclusions, and interlayered shims. Ultrasonic pulse echo C-scan and low-kilovoltage X-ray techniques were used to evaluate and verify the internal conditions of the panels.

  9. The test-retest reliability of a standardized neurocognitive and neurophysiological test battery: "neuromarker".

    PubMed

    Williams, L M; Simms, E; Clark, C R; Paul, R H; Rowe, D; Gordon, E

    2005-12-01

    NeuroMarker combines EEG and ERP measures with neurocognitive tests in a fully computerized and standardized testing system. It is designed for use across the lifespan and has a large normative database of over 1,000 subjects. This study was a preliminary evaluation of "NeuroMarker" in subjects spanning four decades. Twenty-one healthy subjects (12-57 years) were tested at baseline and four weeks later. From the "Neuromarker" battery, the authors analyzed EEG data (eyes open and closed) and ERPs elicited during auditory oddball (N100, P200, N200, P300) and working memory (P150, P300) tasks. Concomitant neuropsychological data, acquired using a touch-screen system, comprised measures of sensori-motor, attention, verbal, executive, and memory function. Test-retest data were examined using analyses of variance and correlational procedures (corrected for multiple comparisons), with parallel analyses of age. EEG data did not differ across sessions, and showed high test-retest reliability (.71-.95), particularly for theta and delta (>.85). ERP components also showed sound reliability, particularly for sites where components are maximal: fronto-central N100 (.76-.77), centro-parietal P300 (.78-.81) to oddball targets, N100 and P200 (.74-.86) to oddball non-targets, and P150 amplitude and latency (.84-.93) to working memory stimuli. Neuropsychological tests showed a similarly sound level of consistency (on average, .70), with the most consistent tests tapping simple motor function, estimated intelligence, switching of attention (Part 2), verbal interference response time and memory intrusions (.71-.89). Age and sex did not have a differential impact on reliability for EEG, ERP, or neuropsychology measures. These findings provide preliminary evidence that the "NeuroMarker" battery is reliable for test-retest assessments. The results suggest that the standardized approach has utility for providing sensitive clinical and treatment evaluations across age groups.

  10. 77 FR 26989 - Commercial Driver's License Testing and Commercial Learner's Permit Standards

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-08

    ... the commercial driver's license (CDL) knowledge and skills testing standards and established new... skills testing standards, which was published in the Federal Register on Monday, May 9, 2011 (76 FR 26853...

  11. National Educational Standards and Testing: A Response to the Recommendations of the National Council on Education Standards and Testing. Congressional Testimony.

    ERIC Educational Resources Information Center

    Koretz, Daniel M.; And Others

    In January 1992, the National Council on Education Standards and Testing (NCEST) issued a report "Raising Standards for American Education," which called for the establishment of a national system of educational standards and assessments as a basis for comprehensive reform of U.S. education. This statement is a facsimile of the written…

  12. 42 CFR 493.1291 - Standard: Test report.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... receipt from outside referral laboratories, satellite or point-of-care testing locations. (b) Test report... identifier and identification number. (2) The name and address of the laboratory location where the test was... the name and address of each laboratory location where the test was performed. (j) All test reports or...

  13. Behaviour of ceria nanoparticles in standardized test media - influence on the results of ecotoxicological tests

    NASA Astrophysics Data System (ADS)

    Manier, Nicolas; Garaud, Maël; Delalain, Patrice; Aguerre-Chariol, Olivier; Pandard, Pascal

    2011-07-01

    The main objectives of this work were to establish the behaviour of a ceria nanopowder in different ecotoxicological media commonly used in standardized aquatic ecotoxicity tests and consequently to assess the acute and chronic ecotoxicity in two micro-invertebrates: Daphnia magna and Ceriodaphnia dubia and in a freshwater green algae: Pseudokirchneriella subcapitata. Different approaches to disperse the ceria nanoparticles (i.e. stirring, use of probe sonication, addition of humic acids) were tested and the influence on the biological endpoints was investigated. Despite the agglomeration phenomena observed in all the tested media, the results obtained indicated higher stability in the lower ionic strength media with addition of humic acid (2 mg.L-1 TOC). No acute toxicity were observed with D. magna, whatever the dispersal method performed and the nCeO2 concentration tested (up to 1000 mg.L-1), as no acute toxicity was recorded with C. dubia following exposure to the stirring suspensions. On contrary, acute toxicity was recorded in C. dubia with EC50 values comprise between 11.9 and 25.3 mg.L-1 using the probe sonicated suspension with or without humic acids addition. Significant chronic effect on the reproduction capability was also recorded in C. dubia. The estimated EC10 values were comprised between 2.1 and 2.9 mg.L-1. Focusing on P. subcapitata, despite the different agglomerate size recorded in the tested media at the end of the exposure periods, results obtained were similar. Adverse effect on algal growth around 5 mg.L-1 were reported (mean EC10 = 4 ± 1.8 mg.L-1). Those results suggested the needed for standardized testing protocol concerning the aqueous media used or the sample preparation for laboratory testing.

  14. Reading Results: A Critical Look at Standardized Testing and the Linguistic Minority

    ERIC Educational Resources Information Center

    Shannon, Joanie

    2008-01-01

    A critical look into assessing the Standardized Test and Reporting (STAR) test data among English language learners gives educators a chance to examine the cultural biases present within the standardized test movement started by the No Child Left Behind Act of 2001. In particular, The STAR test results seem to reflect that the test is geared…

  15. USL/DBMS NASA/PC R and D project system testing standards

    NASA Technical Reports Server (NTRS)

    Dominick, Wayne D. (Editor); Kavi, Srinu; Moreau, Dennis R.; Yan, Lin

    1984-01-01

    A set of system testing standards to be used in the development of all C software within the NASA/PC Research and Development Project is established. Testing will be considered in two phases: the program testing phase and the system testing phase. The objective of these standards is to provide guidelines for the planning and conduct of program and software system testing.

  16. 29 CFR 1630.10 - Qualification standards, tests, and other selection criteria.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... business necessity. (b) Qualification standards and tests related to uncorrected vision. Notwithstanding..., or other selection criteria based on an individual's uncorrected vision unless the standard, test, or... application of a qualification standard, test, or other criterion based on uncorrected vision need not be...

  17. 29 CFR 1630.10 - Qualification standards, tests, and other selection criteria.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... business necessity. (b) Qualification standards and tests related to uncorrected vision. Notwithstanding..., or other selection criteria based on an individual's uncorrected vision unless the standard, test, or... application of a qualification standard, test, or other criterion based on uncorrected vision need not be a...

  18. 29 CFR 1630.10 - Qualification standards, tests, and other selection criteria.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... business necessity. (b) Qualification standards and tests related to uncorrected vision. Notwithstanding..., or other selection criteria based on an individual's uncorrected vision unless the standard, test, or... application of a qualification standard, test, or other criterion based on uncorrected vision need not be a...

  19. 29 CFR 1630.10 - Qualification standards, tests, and other selection criteria.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... business necessity. (b) Qualification standards and tests related to uncorrected vision. Notwithstanding..., or other selection criteria based on an individual's uncorrected vision unless the standard, test, or... application of a qualification standard, test, or other criterion based on uncorrected vision need not be a...

  20. 7 CFR 1755.400 - RUS standard for acceptance tests and measurements of telecommunications plant.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 11 2011-01-01 2011-01-01 false RUS standard for acceptance tests and measurements of..., ACCEPTABLE MATERIALS, AND STANDARD CONTRACT FORMS § 1755.400 RUS standard for acceptance tests and... acceptance tests and measurements on installed copper and fiber optic telecommunications plant and equipment....

  1. Drinking water quality standards and standard tests: Worldwide. (Latest citations from Food Science & Technology Abstracts (FSTA)). Published Search

    SciTech Connect

    1995-10-01

    The bibliography contains citations concerning the laws, regulations, standards, and testing methods for drinking water from domestic and international sources. Citations discuss quality standardization and control. Topics include safety codes for drinking water systems and installations, contaminated water and toxicity analyses, biological and chemical standards, diseases derived from drinking water, plastic materials for water packaging, and natural mineral drinking water. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

  2. Differences in Anglo and Hispanic Performance on Standardized Tests.

    ERIC Educational Resources Information Center

    Loyd, Brenda H.

    One approach to test bias has focused on identifying the potential variables or factors that may be responsible for bias in a particular test for a particular subgroup. This approach was employed in this study to determine variables which may relate to differential test performance by Anglo and Hispanic students. The test materials used in this…

  3. Tracking Standardized Test Performance of Rural Low Income Youth.

    ERIC Educational Resources Information Center

    Cloy, Charles S.; And Others

    1984-01-01

    High school students trained in test-taking skills performed markedly higher on the Nelson-Denny Reading Test than did controls. On two subtests, vocabulary and comprehension, controls scored significantly lower than the experimental group. A relationship was noted between parental help with test-taking preparation and level of test performance.…

  4. 42 CFR 493.863 - Standard; Compatibility testing.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... overall testing event score of at least 100 percent is unsatisfactory performance. (b) Failure to participate in a testing event is unsatisfactory performance and results in a score of 0 for the testing event. Consideration may be given to those laboratories failing to participate in a testing event only if— (1) Patient...

  5. 42 CFR 493.863 - Standard; Compatibility testing.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... overall testing event score of at least 100 percent is unsatisfactory performance. (b) Failure to participate in a testing event is unsatisfactory performance and results in a score of 0 for the testing event. Consideration may be given to those laboratories failing to participate in a testing event only if— (1) Patient...

  6. Standardization of carbon-phenolic composite test methodology

    NASA Technical Reports Server (NTRS)

    Hall, W. B.

    1986-01-01

    The objective of this study was to evaluate the residual volatiles, filler content, and resin flow test procedures for carbon-phenolic prepreg materials. The residual volatile test procedure was rewritten with tighter procedure control which was then evaluated by round robin testing by four laboratories on the same rolls of prepreg. Results indicated that the residual volatiles test was too operator and equipment dependent to be reliable, and it was recommended that the test be discontinued. The resin flow test procedures were rewritten with tighter procedure control, and it is now considered to be an acceptable test. It was recommended that the filler content determination be made prior to prepregging.

  7. Rubidium frequency standard test program for NAVSTAR GPS

    NASA Technical Reports Server (NTRS)

    Koide, F.; Dederich, D. J.

    1978-01-01

    Test data of the RFS Program in the Production phase and computer automation are presented, as an essential element in the evaluation of the RFS performance in a simulated spacecraft environment. Typical production test data will be discussed for stabilities from 1 to 100,000 seconds averaging time and simulated time error accumulation test. Also, design considerations in developing the RFS test systems for the acceptance test in production are discussed.

  8. Standardized methods for in-place filter testing

    SciTech Connect

    Dykes, M.; Fretthold, J.K.; Slawski, J.

    1997-08-01

    The conference minutes of a US DOE meeting held on in-place filter testing are presented. The purpose of the conference was to transfer technical in-place testing knowledge throughout the DOE complex. Major items discussed included purchase requisitions, in-place testing, instrumentation, and in-place test personnel qualifications and training. Future actions identified by conference attendees centered on establishing complex-wide DOE policies on training, inspection and testing, and filter specifications.

  9. Air Force Officer Qualifying Test Form O: Development and Standardization.

    DTIC Science & Technology

    1986-08-01

    the subtests using the Kuder - Richardson Formula 20. The subtests were then combined to form the five composites, and the reliabilities of the composites...were based on a formula developed by Wherry and Gaylord (1943). Tables 5 and 6 present the reliabilities and standard errors of measurement of Form 0...statistics, reliabilities , and intercorrelatlons were computed and found to be similar to corresponding Form N statistics. Standardization of Form 0 was

  10. Framework for a Comparative Accelerated Testing Standard for PV Modules: Preprint

    SciTech Connect

    Kurtz, S.; Wohlgemuth, J.; Yamamichi, M.; Sample, T.; Miller, D.; Meakin, D.; Monokroussos, C.; TamizhMani, M.; Kempe, M.; Jordan, D.; Bosco, N.; Hacke, P.; Bermudez, V.; Kondo, M.

    2013-08-01

    As the photovoltaic industry has grown, the interest in comparative accelerated testing has also grown. Private test labs offer testing services that apply greater stress than the standard qualification tests as tools for differentiating products and for gaining increased confidence in long-term PV investments. While the value of a single international standard for comparative accelerated testing is widely acknowledged, the development of a consensus is difficult. This paper strives to identify a technical basis for a comparative standard.

  11. What are standardized literacy and numeracy tests testing? Evidence of the domain-general contributions to students' standardized educational test performance.

    PubMed

    Howard, Steven J; Woodcock, Stuart; Ehrich, John; Bokosmaty, Sahar

    2017-03-01

    A fundamental aim of standardized educational assessment is to achieve reliable discrimination between students differing in the knowledge, skills and abilities assessed. However, questions of the purity with which these tests index students' genuine abilities have arisen. Specifically, literacy and numeracy assessments may also engage unintentionally assessed capacities. The current study investigated the extent to which domain-general processes - working memory (WM) and non-verbal reasoning - contribute to students' standardized test performance and the pathway(s) through which they exert this influence. Participants were 91 Grade 2 students recruited from five regional and metropolitan primary schools in Australia. Participants completed measures of WM and non-verbal reasoning, as well as literacy and numeracy subtests of a national standardized educational assessment. Path analysis of Rasch-derived ability estimates and residuals with domain-general cognitive abilities indicated: (1) a consistent indirect pathway from WM to literacy and numeracy ability, through non-verbal reasoning; (2) direct paths from phonological WM and literacy ability to numeracy ability estimates; and (3) a direct path from WM to spelling test residuals. Results suggest that the constitution of this nationwide standardized assessment confounded non-targeted abilities with those that were the target of assessment. This appears to extend beyond the effect of WM on learning more generally, to the demands of different assessment types and methods. This has implications for students' abilities to demonstrate genuine competency in assessed areas and the educational supports and provisions they are provided on the basis of these results. © 2016 The British Psychological Society.

  12. 40 CFR 51.357 - Test procedures and standards.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... invalid test condition, unsafe conditions, fast pass/fail algorithms, or, in the case of the on-board... using approved fast pass or fast fail algorithms and multiple pass/fail algorithms may be used during the test cycle to eliminate false failures. The transient test procedure, including algorithms and...

  13. 40 CFR 80.165 - Certification test procedures and standards.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... for such records. (a) Fuel injector deposit control testing. (1) The required test fuel must produce no more than 5% flow restriction in any one injector when tested in accordance with ASTM D 5598-94... Injector Fouling,” 1994, which is incorporated by reference. This incorporation by reference was...

  14. 40 CFR 51.357 - Test procedures and standards.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... assure test accuracy. (1) Initial tests (i.e., those occurring for the first time in a test cycle) shall... be tightened if necessary. (ii) The system shall be pressurized to 14 ±0.5 inches of water without exceeding 26 inches of water system pressure. (iii) Close off the pressure source, seal the...

  15. 42 CFR 493.1291 - Standard: Test report.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES... receipt from outside referral laboratories, satellite or point-of-care testing locations. (b) Test report... identifier and identification number. (2) The name and address of the laboratory location where the test...

  16. 9 CFR 147.1 - The standard tube agglutination test. 1

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 9 Animals and Animal Products 1 2014-01-01 2014-01-01 false The standard tube agglutination test... Blood Testing Procedures § 147.1 The standard tube agglutination test. 1 1 The procedure described is a... containers provided by the laboratory. The containers should be stout-walled test tubes, preferably 3/8 by...

  17. 49 CFR 219.701 - Standards for drug and alcohol testing.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Standards for drug and alcohol testing. 219.701... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Drug and Alcohol Testing Procedures § 219.701 Standards for drug and alcohol testing. (a) Drug testing required or authorized by subparts B...

  18. 49 CFR 219.701 - Standards for drug and alcohol testing.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Standards for drug and alcohol testing. 219.701... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Drug and Alcohol Testing Procedures § 219.701 Standards for drug and alcohol testing. (a) Drug testing required or authorized by subparts B...

  19. 49 CFR 219.701 - Standards for drug and alcohol testing.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Standards for drug and alcohol testing. 219.701... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Drug and Alcohol Testing Procedures § 219.701 Standards for drug and alcohol testing. (a) Drug testing required or authorized by subparts B...

  20. 49 CFR 219.701 - Standards for drug and alcohol testing.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Standards for drug and alcohol testing. 219.701... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Drug and Alcohol Testing Procedures § 219.701 Standards for drug and alcohol testing. (a) Drug testing required or authorized by subparts...

  1. 49 CFR 219.701 - Standards for drug and alcohol testing.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Standards for drug and alcohol testing. 219.701... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Drug and Alcohol Testing Procedures § 219.701 Standards for drug and alcohol testing. (a) Drug testing required or authorized by subparts...

  2. The Fractured Marketplace for Standardized Testing. Evaluation in Education and Human Services.

    ERIC Educational Resources Information Center

    Haney, Walter M.; And Others

    Although standardized testing is increasingly prominent in the United States, the testing industry has not received much attention. The industry and the market for standardized tests are examined, emphasizing the fragmented nature of the market. After an introduction, Chapter 2 describes the testing marketplace, and Chapter 3 reviews evidence on…

  3. Common Risk Criteria Standards for National Test Ranges

    DTIC Science & Technology

    2017-09-01

    process among the ranges; b. Promote valid, repeatable risk assessments; c. Facilitate innovation to support challenging missions; d. Nurture ...challenging missions; d. Nurture openness and trustworthiness among the ranges, range users, and the public. Common Risk Criteria Standards for National...and/or delayed damage are excluded, secondary public safety consequences are addressed due to the network-centric nature of public infrastructure

  4. Guidelines for Selecting a Standard Setting Panel for Licensure Testing.

    ERIC Educational Resources Information Center

    Williamson, David M.

    1999-01-01

    Discusses panels for standard setting and presents 10 guidelines for the selection of panel members for such studies. Panel members should themselves hold the license for which they are producing a cutting score, and they must be familiar with the requirements of the profession and the characteristics of the candidates. (SLD)

  5. Multicultural Standardization and Validation of TEMAS, a Thematic Apperception Test.

    ERIC Educational Resources Information Center

    Costantino, Giuseppe; Malgady, Robert G.

    Mental health clinical services research has emphasized the urgency of developing new psychometric instruments for non-biased psychological assessment of minority and non-minority children of diverse cultural groups in the United States. Background multicultural standardization and validation information is presented for Tell-Me-A-Story (TEMAS)--a…

  6. New ASTM Standards for Nondestructive Testing of Aerospace Composites

    NASA Technical Reports Server (NTRS)

    Waller, Jess M.; Saulsberry, Regor L.

    2010-01-01

    Problem: Lack of consensus standards containing procedural detail for NDE of polymer matrix composite materials: I. Flat panel composites. II. Composite components with more complex geometries a) Pressure vessels: 1) composite overwrapped pressure vessels (COPVs). 2) composite pressure vessels (CPVs). III. Sandwich core constructions. Metal and brittle matrix composites are a possible subject of future effort.

  7. Cognitive fatigue influences students’ performance on standardized tests

    PubMed Central

    Sievertsen, Hans Henrik; Gino, Francesca; Piovesan, Marco

    2016-01-01

    Using test data for all children attending Danish public schools between school years 2009/10 and 2012/13, we examine how the time of the test affects performance. Test time is determined by the weekly class schedule and computer availability at the school. We find that, for every hour later in the day, test performance decreases by 0.9% of an SD (95% CI, 0.7–1.0%). However, a 20- to 30-minute break improves average test performance by 1.7% of an SD (95% CI, 1.2–2.2%). These findings have two important policy implications: First, cognitive fatigue should be taken into consideration when deciding on the length of the school day and the frequency and duration of breaks throughout the day. Second, school accountability systems should control for the influence of external factors on test scores. PMID:26884183

  8. 40 CFR 82.38 - Approved independent standards testing organizations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Recycling Program Manager, Stratospheric Protection Division (6205J), U.S. Environmental Protection Agency... following: (1) That the organization has the capacity to accurately test whether refrigerant recycling...

  9. 40 CFR 82.38 - Approved independent standards testing organizations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Recycling Program Manager, Stratospheric Protection Division (6205J), U.S. Environmental Protection Agency... following: (1) That the organization has the capacity to accurately test whether refrigerant recycling...

  10. 40 CFR 82.38 - Approved independent standards testing organizations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Recycling Program Manager, Stratospheric Protection Division (6205J), U.S. Environmental Protection Agency... following: (1) That the organization has the capacity to accurately test whether refrigerant recycling...

  11. 40 CFR 82.38 - Approved independent standards testing organizations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Recycling Program Manager, Stratospheric Protection Division (6205J), U.S. Environmental Protection Agency... following: (1) That the organization has the capacity to accurately test whether refrigerant recycling...

  12. 40 CFR 82.38 - Approved independent standards testing organizations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Recycling Program Manager, Stratospheric Protection Division (6205J), U.S. Environmental Protection Agency... following: (1) That the organization has the capacity to accurately test whether refrigerant recycling...

  13. Diesel emission production audit test procedure. SAE standard

    SciTech Connect

    1995-06-01

    This SAE Recommended Practice applies to a production dynamometer test procedure which can be used to measure the smoke and gaseous emission characteristics of vehicular diesel engines. This procedure describes the smoke emission test method, smoke test cycle, gaseous emission test method, steady-state gaseous emission test cycle, equipment, instrumentation, calibration, data analysis, and correlation of results for comparison of production engine emission performance to the requirements of current or past Federal regulations. Variations in engines, instrumentation, and test equipment may require modifications to these procedures or data reduction methods. The acceptability of this procedure is dependent upon documented statistical data appropriate to correlate all tests, data reduction techniques, and special instrumentation to the required Federal tests. When using the audit test procedure to assess the emissions performance of production engines, considerations should be given to expected emissions deterioration factors and quality control limits should be adjusted accordingly. This document is intended as a guide for the measurement and assessment of transient smoke and steady-state gaseous emissions from heavy duty vehicular diesel engines only using a shortened engine dynamometer cycle which may be applicable to production line or production quality audit conditions. Key elements of the procedure closely resemble key elements of the federal rest procedures used for regulatory approval by the United States Government.

  14. Fighting Forward: Why Studying Standardized Tests with Our Students Is Important

    ERIC Educational Resources Information Center

    Kraemer, Don J.

    2005-01-01

    An argument is presented on whether helping students intelligently critique standardized tests is a necessary form of test preparation. The detailed analysis of typical questions reveals what students are truly asked to do on the tests.

  15. 40 CFR 201.16 - Standard for locomotive load cell test stands.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Standard for locomotive load cell test... Interstate Rail Carrier Operations Standards § 201.16 Standard for locomotive load cell test stands. (a) Effective January 15, 1984, no carrier subject to this reguation shall operate locomotive load cell...

  16. 40 CFR 201.16 - Standard for locomotive load cell test stands.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 25 2011-07-01 2011-07-01 false Standard for locomotive load cell test... Interstate Rail Carrier Operations Standards § 201.16 Standard for locomotive load cell test stands. (a) Effective January 15, 1984, no carrier subject to this reguation shall operate locomotive load cell...

  17. 40 CFR 201.16 - Standard for locomotive load cell test stands.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 26 2013-07-01 2013-07-01 false Standard for locomotive load cell test... Interstate Rail Carrier Operations Standards § 201.16 Standard for locomotive load cell test stands. (a) Effective January 15, 1984, no carrier subject to this reguation shall operate locomotive load cell...

  18. 40 CFR 201.16 - Standard for locomotive load cell test stands.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 25 2014-07-01 2014-07-01 false Standard for locomotive load cell test... Interstate Rail Carrier Operations Standards § 201.16 Standard for locomotive load cell test stands. (a) Effective January 15, 1984, no carrier subject to this reguation shall operate locomotive load cell...

  19. 40 CFR 201.16 - Standard for locomotive load cell test stands.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 26 2012-07-01 2011-07-01 true Standard for locomotive load cell test... Interstate Rail Carrier Operations Standards § 201.16 Standard for locomotive load cell test stands. (a) Effective January 15, 1984, no carrier subject to this reguation shall operate locomotive load cell...

  20. 40 CFR 761.314 - Chemical analysis of standard wipe test samples.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Chemical analysis of standard wipe test samples. 761.314 Section 761.314 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY....314 Chemical analysis of standard wipe test samples. Perform the chemical analysis of standard...

  1. Effects of Extending Administration Time on Standardized Reading Achievement Tests.

    ERIC Educational Resources Information Center

    Baldwin, R. Scott; And Others

    1989-01-01

    Investigates whether the Nelson-Denny Reading Test's time restrictions may bias the performances of marginal students. Finds that the Nelson-Denny scores alone may provide biased measures of reading ability. Recommends that test makers develop extended time norms. (MG)

  2. Kindergarten Pupil and Teacher Behavior during Standardized Achievement Testing.

    ERIC Educational Resources Information Center

    Frisbie, David A.; Andrews, Kevin

    1990-01-01

    Examines the extent to which kindergarten pupil and teacher behaviors during administration of the Iowa Test of Basic Skills--Early Primary Battery may compromise the meaningfulness and usefulness of the test scores. Although extensive variability in behavior was observed, most teachers followed directions exactly and most pupils encountered no…

  3. Randomness Testing of the Advanced Encryption Standard Finalist Candidates

    DTIC Science & Technology

    2000-03-28

    what was learned utilizing the NIST statistical tests [2] and offers an interpretation of the empirical results. In Section 2, the Randomness Testing...regarding this paper. References [1] A. Meneses , P. van Oorschot and S. Vanstone, Handbook of Applied Cryptography, CRC Press, 1997. [2] A. Rukhin, et. al

  4. Question: Do Standardized Tests Measure General Cognitive Skills? Answer: No.

    ERIC Educational Resources Information Center

    Marzano, Robert J.; Costa, Arthur L.

    1988-01-01

    When the Stanford and CTBS achievement batteries were analyzed, two major findings emerged: (1) the test items included only nine of the 22 general cognitive operations; and (2) the required general cognitive operations had little to do with student achievement on these tests. Implications and alternative assessment techniques are discussed.…

  5. Conceptualizing Teaching to the Test under Standards-Based Reform

    ERIC Educational Resources Information Center

    Welsh, Megan E.; Eastwood, Melissa; D'Agostino, Jerome V.

    2014-01-01

    Teacher and school accountability systems based on high-stakes tests are ubiquitous throughout the United States and appear to be growing as a catalyst for reform. As a result, educators have increased the proportion of instructional time devoted to test preparation. Although guidelines for what constitutes appropriate and inappropriate test…

  6. Conceptualizing Teaching to the Test under Standards-Based Reform

    ERIC Educational Resources Information Center

    Welsh, Megan E.; Eastwood, Melissa; D'Agostino, Jerome V.

    2014-01-01

    Teacher and school accountability systems based on high-stakes tests are ubiquitous throughout the United States and appear to be growing as a catalyst for reform. As a result, educators have increased the proportion of instructional time devoted to test preparation. Although guidelines for what constitutes appropriate and inappropriate test…

  7. State Standardized Testing Programs: Friend or Foe of Gifted Education?

    ERIC Educational Resources Information Center

    Moon, Tonya R.; Brighton, Catherine M.; Callahan, Carolyn M.

    2002-01-01

    A national survey of 1,289 elementary teachers and focus groups examined effects of state testing programs on instructional practices and implications for gifted students' motivation. Results suggest that testing programs are likely to discourage effective classroom practices and instead lead to teachers engaging in one-size-fits-all practices.…

  8. Construct Validation of the Fairy Tale Test--Standardization Data.

    ERIC Educational Resources Information Center

    Coulacoglou, Carina

    2002-01-01

    Studied the construct validity of the Fairy Tale Test (C. Coulacoglu, 1993), a personality projective test for children, in a sample of 800 Greek children aged 8, 10, and 12. Factor analysis led to identification of eight primary factors, and correlations with other measures provide construct validity evidence. (SLD)

  9. Centaur Standard Shroud (CSS) static ultimate load structural tests

    NASA Technical Reports Server (NTRS)

    1975-01-01

    A series of tests were conducted on the jettisonable metallic shroud used on the Titan/Centaur launch vehicle to verify its structural capabilities and to evaluate its structural interaction with the Centaur stage. A flight configured shroud and the interfacing Titan/Centaur structural assemblies were subjected to tests consisting of combinations of applied axial and shear loads to design ultimate values, including a set of tests on thermal conditions and two dynamic response tests to verify the analytical stiffness model. The strength capabilities were demonstrated at ultimate (125 percent of design limit) loads. It was also verified that the spring rate of the flight configured shroud-to-Centaur forward structural deflections of the specimen became nonlinear, as expected, above limit load values. This test series qualification program verified that the Titan/Centaur shroud and the Centaur and Titan interface components are qualified structurally at design ultimate loads.

  10. Using geodetic VLBI to test Standard-Model Extension

    NASA Astrophysics Data System (ADS)

    Hees, Aurélien; Lambert, Sébastien; Le Poncin-Lafitte, Christophe

    2016-04-01

    The modeling of the relativistic delay in geodetic techniques is primordial to get accurate geodetic products. And geodetic techniques can also be used to measure the relativistic delay and get constraints on parameters describing the relativity theory. The effective field theory framework called the Standard-Model Extension (SME) has been developed in order to systematically parametrize hypothetical violations of Lorentz symmetry (in the Standard Model and in the gravitational sector). In terms of light deflexion by a massive body like the Sun, one can expect a dependence in the elongation angle different from GR. In this communication, we use geodetic VLBI observations of quasars made in the frame of the permanent geodetic VLBI monitoring program to constrain the first SME coefficient. Our results do not show any deviation from GR and they improve current constraints on both GR and SME parameters.

  11. Column percolation test for contaminated soils: Key factors for standardization.

    PubMed

    Naka, Angelica; Yasutaka, Tetsuo; Sakanakura, Hirofumi; Kalbe, Ute; Watanabe, Yasutaka; Inoba, Seiji; Takeo, Miyuki; Inui, Toru; Katsumi, Takeshi; Fujikawa, Takuro; Sato, Kenichi; Higashino, Kazuo; Someya, Masayuki

    2016-12-15

    Column percolation tests may be suitable for prediction of chemical leaching from soil and soil materials. However, compared with batch leaching tests, they are time-consuming. It is therefore important to investigate ways to shorten the tests without affecting the quality of results. In this study, we evaluate the feasibility of decreasing testing time by increasing flow rate and decreasing equilibration time compared to the conditions specified in ISO/TS 21268-3, with equilibration periods of 48h and flow rate of 12mL/h. We tested three equilibration periods (0, 12-16, and 48h) and two flow rates (12 and 36mL/h) on four different soils and compared the inorganic constituent releases. For soils A and D, we observed similar values for all conditions except for the 0h-36mL/h case. For soil B, we observed no appreciable differences between the tested conditions, while for soil C there were no consistent trends probably due to the difference in ongoing oxidation reactions between soil samples. These results suggest that column percolation tests can be shortened from 20 to 30days to 7-9days by decreasing the equilibration time to 12-16h and increasing the flow rate to 36mL/h for inorganic substances. Copyright © 2016 The Author(s). Published by Elsevier B.V. All rights reserved.

  12. Centaur Standard Shroud (CSS) static limit load structural tests

    NASA Technical Reports Server (NTRS)

    Eastwood, C.

    1975-01-01

    The structural capabilities of the jettisonable metal shroud were tested and the interaction of the shroud with the Centaur stage was evaluated. A flight-configured shroud and the assemblies of the associated Centaur stage were tested for applied axial and shear loads to flight limit values. The tests included various thermal, pressure, and load conditions to verify localized strength capabilities, to evaluate subsystem performance, and to determine the aging effect on insulation system properties. The tests series verified the strength capabilities of the shroud and of all associated flight assembles. Shroud deflections were shown to remain within allowable limits so long as load sharing members were connected between the shroud and the Centaur stage.

  13. Guidelines for Standardized Testing of Broadband Seismometers and Accelerometers

    USGS Publications Warehouse

    Hutt, Charles R.; Evans, John R.; Followill, Fred; Nigbor, Robert L.; Wielandt, Erhard

    2010-01-01

    Testing and specification of seismic and earthquake-engineering sensors and recorders has been marked by significant variations in procedures and selected parameters. These variations cause difficulty in comparing such specifications and test results. In July 1989, and again in May 2005, the U.S. Geological Survey hosted international pub-lic/private workshops with the goal of defining widely accepted guidelines for the testing of seismological inertial sensors, seismometers, and accelerometers. The Proceedings of the 2005 workshop have been published and include as appendix 6 the report of the 1989 workshop. This document represents a collation and rationalization of a single set of formal guidelines for testing and specifying broadband seismometers and accelerometers.

  14. Standardization Tests of NACA No. 1 Wind Tunnel

    NASA Technical Reports Server (NTRS)

    Reid, Elliott G

    1925-01-01

    The tests described in this report were made in the 5-foot atmospheric wind tunnel of the National Advisory Committee for Aeronautics, at Langley Field. The primary objective of collecting data on the characteristics of this tunnel for comparison with those of others throughout the world, in order that, in the future, the results of tests made in all the principle laboratories may be interpreted, compared, and coordinated on a basis of scientifically established relationships, a process hitherto impossible due to the lack of comparable data. The work includes tests of a disk, spheres, cylinders, and airfoils, explorations of the test section for static pressure and velocity distribution, and determination of the variations of air flow direction throughout the operating range of the tunnel. (author)

  15. Environmental test planning, selection and standardization aids available

    NASA Technical Reports Server (NTRS)

    Copeland, E. H.; Foley, J. T.

    1968-01-01

    Requirements for instrumentation, equipment, and methods to be used in conducting environmental tests on components intended for use by a wide variety of technical personnel of different educational backgrounds, experience, and interests is announced.

  16. 42 CFR 493.1495 - Standard; Testing personnel responsibilities.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... laboratory director and require a degree of skill commensurate with the individual's education, training or... section, if qualified under § 493.1489(b)(5), perform high complexity testing only under the onsite...

  17. 42 CFR 493.1495 - Standard; Testing personnel responsibilities.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... laboratory director and require a degree of skill commensurate with the individual's education, training or... section, if qualified under § 493.1489(b)(5), perform high complexity testing only under the onsite...

  18. 42 CFR 493.1495 - Standard; Testing personnel responsibilities.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... laboratory director and require a degree of skill commensurate with the individual's education, training or... section, if qualified under § 493.1489(b)(5), perform high complexity testing only under the onsite...

  19. 42 CFR 493.1495 - Standard; Testing personnel responsibilities.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... laboratory director and require a degree of skill commensurate with the individual's education, training or... section, if qualified under § 493.1489(b)(5), perform high complexity testing only under the onsite...

  20. Comparison of an Ampelisca abdita growth rate test with other standard amphipod sediment toxicity tests

    SciTech Connect

    Schafer, K.; Weston, D.P.

    1995-12-31

    Amphipod crustaceans are often used to measure the toxicity of bulk sediments. Acute lethal bioassays are commonly employed, but this study investigated the potential for using a chronic growth bioassay with Ampelisca abdita. A potential advantage of this method is that the growth rate could be a more sensitive measure of contamination than mortality. Growth rates for A. abdita in sediments spiked with cadmium and crude oil were compared to mortality rates in A. abdita, Eohaustorius estuaries, and Rhepoxynius abronius in sediments with the same concentrations of contaminants. A. abdita was more sensitive to cadmium than the other two species. For crude oil, there was a significant shift in size distribution from the control even at concentrations as low as 150 mg/kg of oil. The standard acute lethal tests for all species, on the other hand, did not show significant mortality until at least 1,600 mg/kg. The results confirm that growth rates are a more sensitive indicator of toxicity, and to at least the three contaminants tested, A. abdita is as sensitive as E. estuarius and R. abronius. This study also confirmed the reported high mortality rates of E. estuaries in San Francisco Bay sediments. The causes of this high mortality are unknown but give further reason for using A. abdita for toxicity tests in this region.

  1. [Montreal Cognitive Assessment Test: normalization and standardization for Spanish population].

    PubMed

    Ojeda, N; Del Pino, R; Ibarretxe-Bilbao, N; Schretlen, D J; Pena, J

    2016-12-01

    Introduccion. La evaluacion cognitiva de Montreal (MoCA) es un test de cribado breve que evalua el estado cognitivo general, y resulta un recurso alternativo, muy util, al tradicional test minimental. Objetivo. Normalizar y estandarizar el test MoCA, teniendo en cuenta las caracteristicas sociodemograficas de la poblacion española (datos INE, 2012). Sujetos y metodos. El estudio se enmarca dentro del proyecto Normacog, en el que se evaluo a 700 participantes (18-86 años). Se analizaron el efecto de la edad, el nivel educativo y el sexo sobre el rendimiento del test MoCA, y se crearon los percentiles, las puntuaciones escalares para nueve rangos de edad y la puntuacion escalar normalizada ajustada por edad y nivel educativo. Resultados. Los resultados mostraron un efecto significativo de la edad, el nivel educativo y el sexo sobre el rendimiento cognitivo en el test MoCA. Sin embargo, el sexo solo presento un efecto significativo sobre dos dominios cognitivos: atencion y recuerdo diferido. La edad, la educacion y el sexo explicaron entre el 1% y el 32,3% de la varianza en las variables analizadas del test. Los participantes mas mayores con menor nivel de educacion formal obtuvieron peor rendimiento cognitivo. Se obtuvieron los percentiles y las puntuaciones escalares para cada rango de edad y la puntuacion escalar normalizada individual. Conclusion. Se presentan los datos normativos del test MoCA adecuados a las caracteristicas sociodemograficas de la sociedad española y los puntos de corte propuestos para discriminar entre rendimiento cognitivo normal y deterioro cognitivo leve segun los diferentes rangos de edad.

  2. Standardized Exercise Tests and Simulated Terrestrial Mission Task Performance.

    PubMed

    Ade, Carl J; Broxterman, Ryan M; Craig, Jesse C; Schlup, Susanna J; Wilcox, Samuel L; Barstow, Thomas J

    2015-11-01

    Missions to terrestrial destinations (i.e., asteroids, the Moon, and Mars) will consist of physically challenging mission-critical tasks. These tasks, coupled with the negative physiological effects of prolonged microgravity exposure, create a plausible situation in which physical requirements may exceed an astronaut's physical capacity. Therefore, the objective of the current study was to evaluate the association of aerobic fitness and muscular strength parameters with performance during two field tests designed to simulate upper-body mission-critical activities. There were 70 subjects who completed a material transport field test requiring the loading, transport, and unloading of geological samples and a device operations field test consisting of tasks associated with equipment set-up and the operations of controls and valves. The relationships between test duration and the following measurements were determined: running Vo(2max), gas exchange threshold (GET), speed at Vo(2max) (s-Vo(2max)), highest sustainable rate of aerobic metabolism [critical speed (CS)], and the finite distance that could be covered above CS (D'); and arm cranking Vo(2peak), GET, critical power (CP), and the finite work that can be performed above CP (W'). CP (r = -0.66), CS (r = -0.56), and arm cranking Vo(2peak) (r = -0.54) were most strongly correlated with the material transport field test and decision tree analysis revealed CP as the best predictor of performance. For the device operations field test, CP (r = -0.70), CS (r = -0.62), and arm cranking peak power output (r = -0.56) were significant predictors. Arm cranking tests are strongly associated with upper-body dependent tasks, highlighting that the nature of mission tasks needs to be considered when evaluating astronaut physical capacity.

  3. 42 CFR 493.1236 - Standard: Evaluation of proficiency testing performance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 5 2013-10-01 2013-10-01 false Standard: Evaluation of proficiency testing... for Nonwaived Testing General Laboratory Systems § 493.1236 Standard: Evaluation of proficiency testing performance. (a) The laboratory must review and evaluate the results obtained on...

  4. 42 CFR 493.1236 - Standard: Evaluation of proficiency testing performance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 5 2014-10-01 2014-10-01 false Standard: Evaluation of proficiency testing... for Nonwaived Testing General Laboratory Systems § 493.1236 Standard: Evaluation of proficiency testing performance. (a) The laboratory must review and evaluate the results obtained on...

  5. Steps toward More Effective Implementation of the "Standards for Educational and Psychological Testing"

    ERIC Educational Resources Information Center

    Koretz, Daniel

    2006-01-01

    The goal of the Standards for Educational and Psychological Testing is to improve testing practices, but their impact on practice appears spotty. Self-regulation clearly fails in some instances. The establishment of an external agency to oversee testing practices and adherence to the Standards would face substantial hurdles, and the ambiguity of…

  6. Impact of a standardized test package on exit examination scores and NCLEX-RN outcomes.

    PubMed

    Homard, Catherine M

    2013-03-01

    The purpose of this ex post facto correlational study was to compare exit examination scores and NCLEX-RN(®) pass rates of baccalaureate nursing students who differed in level of participation in a standardized test package. Three cohort groups emerged as a standardized test package was introduced: (a) students who did not participate in a standardized test package; (b) students with two semesters of a standardized test package; and (c) students with four semesters of a standardized test package. Benner's novice-to-expert theory framed the study in the belief that students best acquire knowledge and skills through practice and reflection. Students participating in four semesters of a standardized test package demonstrated higher exit examination scores and NCLEX-RN pass rates compared with students who did not participate in this package. This study's results could inform nurse educators about strategies to facilitate nursing student success on exit examinations and the NCLEX-RN. Copyright 2013, SLACK Incorporated.

  7. A Standard Platform for Testing and Comparison of MDAO Architectures

    NASA Technical Reports Server (NTRS)

    Gray, Justin S.; Moore, Kenneth T.; Hearn, Tristan A.; Naylor, Bret A.

    2012-01-01

    The Multidisciplinary Design Analysis and Optimization (MDAO) community has developed a multitude of algorithms and techniques, called architectures, for performing optimizations on complex engineering systems which involve coupling between multiple discipline analyses. These architectures seek to efficiently handle optimizations with computationally expensive analyses including multiple disciplines. We propose a new testing procedure that can provide a quantitative and qualitative means of comparison among architectures. The proposed test procedure is implemented within the open source framework, OpenMDAO, and comparative results are presented for five well-known architectures: MDF, IDF, CO, BLISS, and BLISS-2000. We also demonstrate how using open source soft- ware development methods can allow the MDAO community to submit new problems and architectures to keep the test suite relevant.

  8. Cross-cultural validity and reliability testing of a standard psychiatric assessment instrument without a gold standard.

    PubMed

    Bolton, P

    2001-04-01

    The objective of this study was to assess the cross-culture validity and reliability of a standard psychiatric assessment instrument without the usual "gold standards." Normally criterion validity testing requires comparison with such a standard--usually another instrument or a professional diagnosis. Instead local informants identified persons with and without "agahinda gakabije" (a locally described grief syndrome) who were then asked if they thought they had this syndrome and also interviewed using the depression section of the Hopkins Symptom Checklist (DHSCL). To assess criterion validity, interviews where respondent and informant agreed on the presence or absence of agahinda gakabije were compared with depression diagnosis using the DHSCL. We also assessed construct validity (using factor analysis), internal reliability (Cronbach's alpha), and test-retest reliability using results from a subsequent community-based survey employing the DHSCL. We found a similar relationship between depression and agahinda gakabije as between depression and grief in western countries, which supports criterion validity. Construct validity and internal reliability were good (Cronbach's alpha = 0.87). Test-retest reliability of a DHSCL-based scale was less adequate (0.67). Although not replacing the usual gold standards for testing criterion validity, this approach may prove useful where these standards are unavailable. As this includes much of the developing world, this could result in more accurate mental health assessments among populations for whom this has hitherto not been possible.

  9. Standard test method for vinyl chloride in workplace atmospheres (charcoal tube method). ASTM standard

    SciTech Connect

    1998-07-01

    This test method is under the jurisdiction of ASTM Committee D-22 on Sampling and Analysis of Atmospheres and is the direct responsibility of Subcommittee D22.04 on Workplace Atmospheres. Current edition approved May 10, 1998. Published July 1998. Originally published as D 4766-88. Last previous edition D 4766-88(1993). Copyright American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA, 19428, USA. This document is available from NTIS under license from ASTM.

  10. Development and Standardization of the Harris Infant Neuromotor Test.

    ERIC Educational Resources Information Center

    Harris, Susan R.; Megens, Antoinette M.; Backman, Catherine L.; Hayes, Virginia

    2003-01-01

    This article describes the Harris Infant Neuromotor Test (HINT) and reviews investigations into its reliability and validity, normative data, and the sensitivity and specificity of parental opinions of their infants' movement and motor development. It concludes that the HINT is a quick, noninvasive screening tool with potential for the early…

  11. GPS Block IIF Rubidium Frequency Standard Life Test

    DTIC Science & Technology

    2009-11-01

    lines . In this case, the clock was turned off to prevent possible damage to the unit. All other test components continued to operate without...2007, U.S. Naval Research Laboratory. [2] R. Beard, J. White, J. Brad, S. Stebbins , J. Smathers, T. Myers, F. Danzy, A. Frank, W. Reid, and J

  12. Analysis of Individual "Test Of Astronomy STandards" (TOAST) Item Responses

    ERIC Educational Resources Information Center

    Slater, Stephanie J.; Schleigh, Sharon Price; Stork, Debra J.

    2015-01-01

    The development of valid and reliable strategies to efficiently determine the knowledge landscape of introductory astronomy college students is an effort of great interest to the astronomy education community. This study examines individual item response rates from a widely used conceptual understanding survey, the Test Of Astronomy Standards…

  13. Parent Attitudes towards Home Preparation for Standardized Testing in Jamaica

    ERIC Educational Resources Information Center

    Harrisingh, Allison E.

    2011-01-01

    This phenomenological qualitative study explored the lived experiences of parents who used stress-reducing interventions with children during home preparation for the Grade Six Achievement Test (GSAT) in Kingston, Jamaica. Eight Grade Six parents with children who participated in the 2010 GSAT were interviewed. Only parents with a Grade Six child…

  14. Minimum Library Use Skills: Standards, Test, and Bibliography.

    ERIC Educational Resources Information Center

    Carr, Jo Ann, Ed.

    Compiled by the Wisconsin Association of Academic Librarians' (WAAL) Education and Library Use Committee, the Test of Minimum Library Use Skills provides examples of questions which may be used to assess students' knowledge of the 13 minimum library use skills adapted by the WAAL membership in 1983. The 59 multiple choice questions that make up…

  15. [The pretransfusion bedside agglutination test is not a "Gold Standard"].

    PubMed

    Levy, G

    2008-11-01

    ABO-incompatible transfusions remain frequent in Europe despite the technological progresses in relation with the potential number of human errors during the control procedures of the transfusion chain. The agglutination bedside-test is only one step of this chain and the amelioration of the security will be achieved by its replacement by an electronical check.

  16. From Hurdles to Standards of Quality in Teacher Testing.

    ERIC Educational Resources Information Center

    Hilliard, Asa G., III

    1986-01-01

    Asserts that currently accepted teacher competency tests are not valid and reliable measures of those qualities essential to effective teaching. Presents criteria that should be met by a valid assessment approach and, beyond competency assessment, stresses the need to improve the environment in which teachers function and students attempt to…

  17. Time Limits in Standardized Testing: Effects on Ability Estimation.

    ERIC Educational Resources Information Center

    Garrison, Wayne M.; Coggiola, Deborah C.

    The study involving 614 hearing impaired students investigated the adequacy of time limits currently followed in the administration of two subtests of the Differential Aptitude Test battery when used with young deaf students. Thirty-six students who did not complete the Space Relations portion of the battery under the timed condition, and 11 who…

  18. Heuristics and NCLB Standardized Tests: A Convenient Lie

    ERIC Educational Resources Information Center

    Dodge, Arnold

    2009-01-01

    The No Child Left Behind Act of 2001 requires public schools in the United States to test students in grades 3-8. The author argues that this mandate has been supported by the public, in part, because of the "availability heuristic," a phenomenon which occurs when people assess the probability of an event by the ease with which instances…

  19. 40 CFR 51.357 - Test procedures and standards.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... forth in 40 CFR 86.094-17(e)(1): “Control of Air Pollution From New Motor Vehicles and New Motor Vehicle... Section 51.357 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS.... Such access may be limited but shall in no way prevent full observation. (3) An official test, once...

  20. 40 CFR 51.357 - Test procedures and standards.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... forth in 40 CFR 86.094-17(e)(1): “Control of Air Pollution From New Motor Vehicles and New Motor Vehicle... Section 51.357 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS.... Such access may be limited but shall in no way prevent full observation. (3) An official test, once...

  1. STANDARDS CONTROLLING AIR EMISSIONS FOR THE SOIL DESICCATION PILOT TEST

    SciTech Connect

    BENECKE MW

    2010-09-08

    This air emissions document supports implementation of the Treatability Test Plan for Soil Desiccation as outlined in the Deep Vadose Zone Treatability Test Plan for the Hanford Central Plateau (DOE/RL-2007-56). Treatability testing supports evaluation of remedial technologies for technetium-99 (Tc-99) contamination in the vadose zone at sites such as the BC Cribs and Trenches. Soil desiccation has been selected as the first technology for testing because it has been recommended as a promising technology in previous Hanford Site technology evaluations and because testing of soil desiccation will provide useful information to enhance evaluation of other technologies, in particular gas-phase remediation technologies. A soil desiccation pilot test (SDPT) will evaluate the desiccation process (e.g., how the targeted interval is dried) and the long-term performance for mitigation of contaminant transport. The SDPT will dry out a moist zone contaminated by Tc-99 and nitrate that has been detected at Well 299-E13-62 (Borehole C5923). This air emissions document applies to the activities to be completed to conduct the SDPT in the 200-BC-1 operable unit located in the 200 East Area of the Hanford Site. Well 299-E13-62 is planned to be used as an injection well. This well is located between and approximately equidistant from cribs 216-B-16, 216-B-17, 216-B-18. and 216-B-19. Nitrogen gas will be pumped at approximately 300 ft{sup 3}/min into the 299-EI3-62 injection well, located approximately 12 m (39 ft) away from extraction well 299-EI3-65. The soil gas extraction rate will be approximately 150 ft{sup 3}/min. The SDPT will be conducted continuously over a period of approximately six months. The purpose of the test is to evaluate soil desiccation as a potential remedy for protecting groundwater. A conceptual depiction is provided in Figure 1. The soil desiccation process will physically dry, or evaporate, some of the water from the moist zone of interest. As such, it is

  2. Twenty Years On!: Updating the IEA BESTEST Building Thermal Fabric Test Cases for ASHRAE Standard 140

    SciTech Connect

    Judkoff, R.; Neymark, J.

    2013-07-01

    ANSI/ASHRAE Standard 140, Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs applies the IEA BESTEST building thermal fabric test cases and example simulation results originally published in 1995. These software accuracy test cases and their example simulation results, which comprise the first test suite adapted for the initial 2001 version of Standard 140, are approaching their 20th anniversary. In response to the evolution of the state of the art in building thermal fabric modeling since the test cases and example simulation results were developed, work is commencing to update the normative test specification and the informative example results.

  3. Standard-C hydrogen monitoring system acceptance test procedure

    SciTech Connect

    Schneider, T.C.

    1994-09-02

    The primary function of the standard-C hydrogen monitoring system (SHMS) is to monitor specifically for hydrogen in the waste tank atmosphere which may also contain (but not be limited to) unknown quantities of air, nitrous oxide, ammonia, water vapor, carbon dioxide, carbon monoxide, and other gaseous constituents. The SHMS will consist of hydrogen specific monitors, a grab sampler to collect samples for laboratory analysis, a gas chromatograph, and the gas sample collection system necessary to support the operation of the instrumentation. This system will be located in a cabinet placed at the tank of interest. The purpose of this document is to demonstrate that the SHMS is constructed as intended by design.

  4. Testing the Standard Model with the Primordial Inflation Explorer

    NASA Technical Reports Server (NTRS)

    Kogut, Alan J.

    2011-01-01

    The Primordial Inflation Explorer is an Explorer-class mission to measure the gravity-wave signature of primordial inflation through its distinctive imprint on the linear polarization of the cosmic microwave background. PIXIE uses an innovative optical design to achieve background-limited sensitivity in 400 spectral channels spanning 2.5 decades in frequency from 30 GHz to 6 THz (1 cm to 50 micron wavelength). The principal science goal is the detection and characterization of linear polarization from an inflationary epoch in the early universe, with tensor-to-scalar ratio r < 10A{-3) at 5 standard deviations. The rich PIXIE data set will also constrain physical processes ranging from Big Bang cosmology to the nature of the first stars to physical conditions within the interstellar medium of the Galaxy. I describe the PIXIE instrument and mission architecture needed to detect the inflationary signature using only 4 semiconductor bolometers.

  5. Test Standards for Contingency Base Waste-to-Energy Technologies

    DTIC Science & Technology

    2015-08-01

    strong initiating force; 5) explode at normal temperatures and pressures ; or 6) fit within the Department of Transportation’s forbidden explosives...followed by gas evolution from the combustion/ pyrolysis reactions which will vary over time. A very different sampling approach may be needed for batch... pyrolysis /combustion begins). 3) Potential Additional Sampling and Analysis a) Review local regulatory requirements for the test program and/or

  6. Development of Standard Testing Method for Water Taste Effects.

    DTIC Science & Technology

    potassium chlorogenate , as well as another chemical, potassium chlorate, were tested on thirty eight subjects. In about one third of the subjects...increasing the concentration of the potassium chlorogenate used as the adapting solution resulted in sweet water tastes of increasing intensity. Some...subjects perceived water after potassium chlorogenate as sweet but the sweetness did not increase substantially as the concentration of potassium

  7. Critical assessment of regulatory standards and tests for fish vaccines.

    PubMed

    Midtlyng, P J

    2005-01-01

    Within the European Economic Area (EU member states plus Norway, Iceland and Liechtenstein), veterinary vaccines must comply with EU regulations and relevant monographs of the European Pharmacopoeia. Since 1996, three European monographs specific for fish have been adopted; concerning oil-adjuvanted, injectable vaccine for salmonids against furunculosis, as well as bacterins against classical vibriosis (Listonella anguillarum) or cold-water vibriosis (Vibrio salmonicida) in salmonids. The regulatory requirements laid down in these monographs include the use of seronegative fish for in vivo safety testing; conduct of vaccination trials in which experimental challenge is administered by injection, and minimum relative protection to be achieved at a given level of control mortality. Several aspects of these requirements are being questioned. This concerns the relevance of injection challenge methods as opposed to waterborne challenge; the validity of relative protection assessed at 60 % control mortality (RPS6) as compared to protection calculated at the endpoint of mortality (RPSendpoint), and poor test power due to low numbers of fish per treatment group. There is a strong need for future efforts to refine the methods for documentation and testing of fish vaccines, and to assure their suitability for the intended purpose.

  8. Teacher Licensure Test Validation and Performance Standard Studies: A Two-State Comparison.

    ERIC Educational Resources Information Center

    Bowman, Harry L.

    Comparative data and results of validation and standard-setting studies are presented for five subject-matter tests for teacher certification in two states. The five tests evaluated were available from the Educational Testing Service (ETS): one National Teacher Examination specialty area test (special education); and four tests from a consortium…

  9. The Framed Standard Model (II) -- A First Test Against Experiment

    NASA Astrophysics Data System (ADS)

    Chan, Hong-Mo; Tsou, Sheung Tsun

    Apart from the qualitative features described in Paper I (Ref. 1), the renormalization group equation derived for the rotation of the fermion mass matrices are amenable to quantitative study. The equation depends on a coupling and a fudge factor and, on integration, on 3 integration constants. Its application to data analysis, however, requires the input from experiment of the heaviest generation masses mt,mb,mτ,mυ3 all of which are known, except for mυ3. Together then with the theta-angle in the QCD action, there are in all 7 real unknown parameters. Determining these 7 parameters by fitting to the experimental values of the masses mc, mυ, me, the CKM elements |Vus|, |Vub|, and the neutrino oscillation angle sin2 θ13, one can then calculate and compare with experiment the following 12 other quantities ms, mu/md, |Vud|, |Vcs|, |Vtb|, |Vcd|, |Vcb|, |Vts|, |Vtd|, J, sin2 2θ12, sin2 2θ23, and the results all agree reasonably well with data, often to within the stringent experimental error now achieved. Counting the predictions not yet measured by experiment, this means that 17 independent parameters of the standard model are now replaced by 7 in the FSM...

  10. Standard test method for the performance of conveyor ovens. ASTM standard

    SciTech Connect

    1998-08-01

    This test method is under the jurisdiction of ASTM Committee F-26 on Food Service Equipment and is the direct responsibility of Subcommittee F26.06 on Productivity and Energy Protocol. The current edition was approved Jul. 10, 1997. It was published August 1998.

  11. Posttraumatic Stress Disorder and Standardized Test-Taking Ability

    DTIC Science & Technology

    2010-01-01

    factors that affect test-taking ability in young adults is vital. Although scholarly attention has often focused on demographic factors (c.g., gender...abi lity in young adults is vital. Although scholarly allemion h;J.l; often focused on (I\\:mobr.lphic factors (e.g .. gender nnd race). sun1cicntly...and the U.S. Anny Research lnstilute for Environmental Medicine. ’The U.S. Army Medical 223 Factors th:1I are largely determined by birth. such as

  12. Testing warning messages on smokers’ cigarette packages: A standardized protocol

    PubMed Central

    Brewer, Noel T.; Hall, Marissa G.; Lee, Joseph G. L.; Peebles, Kathryn; Noar, Seth M.; Ribisl, Kurt M.

    2015-01-01

    Purpose Lab experiments on cigarette warnings typically use a brief one-time exposure that is not paired with the cigarette packs smokers use every day, leaving open the question of how repeated warning exposure over several weeks may affect smokers. This proof of principle study sought to develop a new protocol for testing cigarette warnings that better reflects real-world exposure by presenting them on cigarette smokers’ own packs. Methods We tested a cigarette pack labeling protocol with 76 US smokers ages 18 and older. We applied graphic warnings to the front and back of smokers’ cigarette packs. Results Most smokers reported that at least 75% of the packs of cigarettes they smoked during the study had our warnings. Nearly all said they would participate in the study again. Using cigarette packs with the study warnings increased quit intentions (p<.05). Conclusion Our findings suggest a feasible pack labeling protocol with six steps: (1) schedule appointments at brief intervals; (2) determine typical cigarette consumption; (3) ask smokers to bring a supply of cigarette packs to study appointments; (4) apply labels to smokers’ cigarette packs; (5) provide participation incentives at the end of appointments; and (6) refer smokers to cessation services at end of the study. When used in randomized controlled trials in settings with real-world message exposure over time, this protocol may help identify the true impact of warnings and thus better inform tobacco product labeling policy. PMID:25564282

  13. Acceptance tests and manufacturer relationships from the 20A h standard cell data

    NASA Technical Reports Server (NTRS)

    Leibecki, H. F.

    1981-01-01

    Seventeen performance tests were used to classify spacecraft batteries in four standard groups established by manufacturers. Tests included capacity delivered values, end of charge voltage values, and internal shorts. Variance ratios are listed.

  14. Standard guide for acute toxicity test with the rotifer Brachionus. ASTM standard

    SciTech Connect

    1991-06-01

    This guide is under the jurisdiction of ASTM Committee E-47 on Biological Effects and Environmental Fate and is the direct responsibility of Subcommittee E47.01 on Aquatic Toxicology. Current edition approved Sep. 15, 1991. Published November 1991. Reapproved 1998. Copyright American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA, 19428, USA. This document is available from NTIS under license from ASTM.

  15. CMOS standard cells characterization for open defects for test pattern generation

    NASA Astrophysics Data System (ADS)

    Wielgus, Andrzej; Pleskacz, Witold

    2016-12-01

    This paper presents an extended method of CMOS standard cells characterization for defect based voltage testing. It allows to estimate the probabilities of physical open defects occurrences in a cell, describes its faulty behavior caused by the defects and finds the test sequences that detect those faults. Finally, the minimal set of test sequences is selected to cover all detectable faults and the optimal complex test sequence is constructed. Experimental results for cells from industrial standard cell library are presented as well.

  16. Can standard genotoxicity tests be applied to nanoparticles?

    PubMed

    Magdolenova, Zuzana; Lorenzo, Yolanda; Collins, Andrew; Dusinska, Maria

    2012-01-01

    Experiments were conducted to determine the validity of two common genotoxicity testing procedures, the comet assay and the micronucleus (MN) test, when applied to nanoparticles (NP). The comet assay is used to detect strand breaks (SB) induced in cellular DNA. There is a possibility of obtaining false positive results, if residual NP remain in proximity to the virtually naked DNA that results from lysis of agarose-embedded cells, and react with this DNA in ways that do not occur with chromatin in intact cells. However, data showed that if NP are deliberately present at high concentration with lysed cells, there is no change in SB with a range of NP. Only oleic acid-coated Fe₃O₄ NP induced damage, as these particles also produced equivalent alterations in whole cells. A modification of the comet assay incorporates digestion of DNA with lesion-specific endonucleases, notably formamidopyrimidine DNA glycosylase (FPG), which detects oxidized purines. Again there is a concern regarding the presence of residual NP with DNA of lysed cells, but this time because of the risk of false negative results if NP interfere with the FPG reaction. However, it was found that incubation of cells with NP before treatment with a known 8-oxoguanine-inducing agent does not lead to any decrease in the yield of FPG-sensitive sites. Chromosomal damage is detected with the MN assay, which depends on the use of cytochalasin B (CB) to prevent cell division and accumulates binucleate cells. It is known that CB also inhibits endocytosis, and thus might prevent NP uptake. Data demonstrated that if NP are added to cells together with CB, fewer MN are induced. It is therefore necessary to treat cells with NP prior to CB in order to avoid interference and possible false negative results.

  17. Effects of saline or albumin resuscitation on standard coagulation tests.

    PubMed

    Bellomo, Rinaldo; Morimatsu, Hiroshi; Presneill, Jeff; French, Craig; Cole, Louise; Story, David; Uchino, Shigehiko; Naka, Toshio; Finfer, Simon; Cooper, D James; Myburgh, John

    2009-12-01

    To explore whether fluid resuscitation with normal saline or 4% albumin is associated with differential changes in routine clinical coagulation tests. Substudy from a large double-blind randomised controlled trial, the SAFE (Saline versus Albumin Fluid Evaluation) study. Three general intensive care units. Cohort of 687 critically ill patients. We randomly allocated patients to receive either 4% human albumin or normal saline for fluid resuscitation, and collected demographic and haematological data. Albumin was administered to 338 patients and saline to 349. At baseline, the two groups had similar mean activated partial thromboplastin time (APTT) of 37.2 s (albumin) v 39.1 s (saline); mean international normalised ratio (INR) of 1.38 v 1.34, and mean platelet count of 244 x 10(9)/L v 249 x 10(9)/L. After randomisation, during the first day of treatment, the APTT in the albumin group was prolonged by a mean of 2.7 s, but shortened slightly by a mean of -0.9 s in the saline group. The INR did not change in either group, while the platelet count decreased transiently in both groups. Using multivariate analysis of covariance to account for baseline coagulation status, albumin fluid resuscitation (P = 0.01) and a greater overall volume of resuscitation (P = 0.03) were independently associated with prolongation of APTT during the first day. Administration of albumin or of larger fluid volumes is associated with a prolongation of APTT. In ICU patients, the choice and amount of resuscitation fluid may affect a routinely used coagulation test.

  18. [Reference Intervals of Standard Test Items in Ningen Dock Examination].

    PubMed

    Yamakado, Minoru

    2016-03-01

    Reference intervals (RIs) were derived from records of 1,499,288 individuals who underwent ningen dock examination in 188 institutes which belong to Japan Society of Ningen Dock in 2012. Targets were 27 basic laboratory tests, including the body mass index (BMI) and systolic and diastolic blood pressures (SBP, DBP). Individuals fulfilling strict criteria were chosen: SBP < 130, DBP < 85 mmHg, BMI < 25 Kg/m2, non-smoking, ethanol consumption < 20 g/day, under no medication, with no remarkable current/past illness. The latent abnormal values exclusion (LAVE) method was applied to ensure normal results. RLs were derived using a parametric method with modified Box-Cox power transformation. Among all attendees, 23% fulfilled the criteria. Application of the LAVE method further reduced the dataset by 40-50%. RIs without distinction of the sex and age were SBP, DBP, TP, TB, MCV, WBC, and Plt. Sex-specific RIs were BMI, CRE, UA, TG, HDL-C, ALT, GGT, Glu, RBC, Hb, and Ht. Age-specific RIs in either sex were Alb, AST, HbA1c, TC, LDL-C, FW-LDL-C, nonHDL-C, and ALP. An age-specific RI without distinction of the sex was eGFR. Comparison of derived RIs with clinical decision limits (CDLs) revealed that the upper limits of RIs differed from CDLs according to the sex and age. Implementation of sex- and age-related RIs derived from individuals with fully normal ningen dock results will enable the appropriate interpretation of test results in health screening, and promote the effective application of CDLs for therapeutic intervention, taking into account the sex, age, and other health attributes.

  19. This Test Is Unfair: African American and Latino High School Students' Perceptions of Standardized College Admission Tests.

    ERIC Educational Resources Information Center

    Walpole, MaryBeth; McDonough, Patricia M.; Bauer, Constance J.; Gibson, Carolyn; Kanyi, Kamau T.; Toliver, Rita

    This qualitative study focused on African American and Latino high school students perceptions of standardized admission tests, including the Scholastic Assessment Tests (I and II) and the ACT Assessment. Students enrolled in college preparatory classes were interviewed about these tests individually and in focus groups in fall 1998 in their…

  20. This Test Is Unfair: African American and Latino High School Students' Perceptions of Standardized College Admission Tests.

    ERIC Educational Resources Information Center

    Walpole, MaryBeth; McDonough, Patricia M.; Bauer, Constance J.; Gibson, Carolyn; Kanyi, Kamau T.; Toliver, Rita

    This qualitative study focused on African American and Latino high school students perceptions of standardized admission tests, including the Scholastic Assessment Tests (I and II) and the ACT Assessment. Students enrolled in college preparatory classes were interviewed about these tests individually and in focus groups in fall 1998 in their…

  1. Development of a standardized testing system for orthodontic sliding mechanics.

    PubMed

    Fathimani, Maryam; Melenka, Garrett W; Romanyk, Dan L; Toogood, Roger W; Heo, Giseon; Carey, Jason P; Major, Paul W

    2015-01-01

    The primary objective of this study was to develop a computer-controlled three-dimensional friction measuring system, the orthodontic friction simulator (OFS). A clinically-based in vitro experiment considering wet and dry friction for conventionally and self-ligated brackets is presented to elucidate debate surrounding sliding mechanics and illustrate capabilities of the OFS. The OFS was designed and manufactured using sound engineering principles and with the primary concern of being able to measure all forces and moments generated during sliding mechanics. This required the implementation of a six-axis load cell. A variety of translation and rotation stages were also incorporated to allow for precise positioning of the bracket relative to the archwire. Once designed and built, the OFS was then used to compare conventional and self-ligation methods in both the wet and dry state. Damon Q brackets and 0.018″ × 0.025″ stainless steel wires were used for all tests with a sample size of n = 65 for each ligation method. Archwires were pulled at a speed of 0.1 mm/s in 11 increments of 0.1 mm. At each increment, the bracket would be rotated 0.5° resulting in a total archwire travel of 1.1 mm and a second-order bracket angle range of 0°-5°. A repeated measures ANOVA was conducted to determine if ligation method and/or addition of moisture effected resulting orthodontic loads. The developed equipment for studying orthodontic sliding mechanics was able to measure forces and moments in all three directions; a capability not previously realized in the literature. Additionally, it was found that passive ligation significantly reduced resistance to sliding, P ≤ 0.05, while the dry/wet state did not. The OFS certainly proved to be an adequate instrument for the scientific evaluation of orthodontic sliding mechanics. It is capable of measuring loads generated in all directions and is a fully automated apparatus allowing for simple and repeatable friction

  2. BSAC standardized disc susceptibility testing method (version 7).

    PubMed

    Andrews, J M

    2008-08-01

    The changes that have been made to the previous version of the recommendations (version 6) are as follows: medium and incubation condition for testing Acinetobacter spp. (Tables 1 and 6); use of cefoxitin as an indicator antibiotic for detecting methicillin/oxacillin/cefoxitin resistance in coagulase-negative staphylococci (Tables 1, 6 and 11); MIC breakpoint for co-trimoxazole based on the trimethoprim concentration in a 1:19 combination with sulfamethoxazole (Tables 7, 10, 11, 12, 15, 16 and 19); advice on the use of azithromycin for the treatment of infections with Salmonella typhi (footnote to Table 7); amendment to the recommendation for cefuroxime for the treatment of infections with Proteus mirabilis (footnote Table 7); MIC and zone diameter breakpoints for Stenotrophomonas maltophilia only (Table 10); MIC breakpoints for daptomycin (Tables 11 and 15); clarification for staphylococci that the neomycin zone diameter breakpoints are for topical use only and differentiate the isolates outside the 'wild-type' population in Table 11; clarification for beta-haemolytic streptococci that the linezolid zone diameter breakpoints relate to an MIC breakpoint of 2 mg/L as no data for the intermediate category are currently available (Table 15); clarification that strains with reduced susceptibility to fluoroquinolones give no zone of inhibition with a 30 microg nalidixic acid disc (Tables 16 and 21); erythromycin is no longer used for therapy of Neisseria gonorrhoeae, but may be tested for epidemiological purposes (Table 17); clarification that the ciprofloxacin zone diameter breakpoint for Neisseria meningitidis relates to the MIC breakpoint of 0.03 mg/L as no data for the intermediate category are currently available; clarification that the ciprofloxacin zone diameter breakpoints for Campylobacter spp. relate to an MIC breakpoint of 0.5 mg/L as no data for the intermediate category are currently available; clarification that for ciprofloxacin and vancomycin zone

  3. Comparison of Standardized Test Scores from Traditional Classrooms and Those Using Problem-Based Learning

    ERIC Educational Resources Information Center

    Needham, Martha Elaine

    2010-01-01

    This research compares differences between standardized test scores in problem-based learning (PBL) classrooms and a traditional classroom for 6th grade students using a mixed-method, quasi-experimental and qualitative design. The research shows that problem-based learning is as effective as traditional teaching methods on standardized tests. The…

  4. Do School-Based Tutoring Programs Significantly Improve Student Performance on Standardized Tests?

    ERIC Educational Resources Information Center

    Rothman, Terri; Henderson, Mary

    2011-01-01

    This study used a pre-post, nonequivalent control group design to examine the impact of an in-district, after-school tutoring program on eighth grade students' standardized test scores in language arts and mathematics. Students who had scored in the near-passing range on either the language arts or mathematics aspect of a standardized test at the…

  5. High-Stakes Testing and Discursive Control: The Triple Bind for Non-Standard Student Identities

    ERIC Educational Resources Information Center

    Au, Wayne W.

    2009-01-01

    The effects of high-stakes, standardized testing on the curriculum are discouraging the teaching of multicultural, anti-racist content. Test-influenced educational environments contribute to the reproduction of racial and cultural inequality in education. Using the lens of sociolinguistics, the author asserts that high-stakes, standardized tests…

  6. High-Stakes Testing and Discursive Control: The Triple Bind for Non-Standard Student Identities

    ERIC Educational Resources Information Center

    Au, Wayne W.

    2009-01-01

    The effects of high-stakes, standardized testing on the curriculum are discouraging the teaching of multicultural, anti-racist content. Test-influenced educational environments contribute to the reproduction of racial and cultural inequality in education. Using the lens of sociolinguistics, the author asserts that high-stakes, standardized tests…

  7. The Use and Misuse of Standardized Testing: A Whiteheadian Point of View

    ERIC Educational Resources Information Center

    Riffert, Franz

    2005-01-01

    First an overview is given about the actual national and international situation concerning standardized testing. Then two major reasons are presented why accountability systems based on standardized testing have become so widespread: (a) the missing validity and reliability of teachers' assessment of students' achievement, and (b) the important…

  8. Political Judgement, Freedom of Thought, and Standardized Testing: A Critical Enquiry

    ERIC Educational Resources Information Center

    Schuler, Matthew Edward

    2012-01-01

    The practice of "standardized" testing has been embedded in United States federal education policy since at least the passage of the Elementary and Secondary Education Act of 1965. The roots of standardized testing in American education, grounded in Kantian "Modern Thought," can be traced to the U.S. Military Academy at…

  9. Correlates of Mexican American Students' Standardized Test Scores: An Integrated Model Approach

    ERIC Educational Resources Information Center

    Morales, M. Cristina; Saenz, Rogelio

    2007-01-01

    The use of standardized testing to evaluate academic achievement is a widely debated topic. Despite controversies, standardized testing is used in all educational levels from elementary school to college entrance examinations. One of the ethnic groups particularly affected by this is the Mexican-origin population. An integrated model (individual,…

  10. Comparison of Standardized Test Scores from Traditional Classrooms and Those Using Problem-Based Learning

    ERIC Educational Resources Information Center

    Needham, Martha Elaine

    2010-01-01

    This research compares differences between standardized test scores in problem-based learning (PBL) classrooms and a traditional classroom for 6th grade students using a mixed-method, quasi-experimental and qualitative design. The research shows that problem-based learning is as effective as traditional teaching methods on standardized tests. The…

  11. Writing to the Rubric: Lingering Effects of Traditional Standardized Testing on Direct Writing Assessment.

    ERIC Educational Resources Information Center

    Mabry, Linda

    1999-01-01

    Education remains heavily shackled by punitive, test-driven reform. Despite reasonable alternatives, testing increasingly drives educational accountability and reform. Standardization of direct writing assessments promotes scoring reliability and facilitates educational comparisons and rankings. However, standardized writing is not good writing,…

  12. Predicting Middle Level State Standardized Test Results Using Family and Community Demographic Data

    ERIC Educational Resources Information Center

    Tienken, Christopher H.; Colella, Anthony; Angelillo, Christian; Fox, Meredith; McCahill, Kevin R.; Wolfe, Adam

    2017-01-01

    The use of standardized test results to drive school administrator evaluations pervades education policymaking in more than 40 states. However, the results of state standardized tests are strongly influenced by non-school factors. The models of best fit (n = 18) from this correlational, explanatory, longitudinal study predicted accurately the…

  13. Alignment between High School Biology Curriculum Standard and the Standardised Tests of Four Provinces in China

    ERIC Educational Resources Information Center

    Lu, Qun; Liu, Enshan

    2012-01-01

    With the development and implementation of new curriculum standards, the field tests of education reform in senior high schools began in 2004 in four pilot provinces in mainland China. After five years of the reform, it is necessary to know how and to what extent the curriculum standard guides test classroom instruction. The present study was…

  14. Establishing Standards on Tests Used for Certification of Education Personnel: Validity Issues.

    ERIC Educational Resources Information Center

    Jaeger, Richard M.

    The "Standards for Educational and Psychological Testing" (1985) and the "Uniform Guidelines on Employee Selection Procedures" (1978) provide no clear guidance on choosing methods for setting standards on teacher certification tests, although they require that practices be well-documented and produce reasonable results, and…

  15. Parents' Perceptions of Standardized Testing: Its Relationship and Effect on Student Achievement

    ERIC Educational Resources Information Center

    Osburn, Monica Z.; Stegman, Charles; Suitt, Laura D.; Ritter, Gary

    2004-01-01

    Questions regarding the value of standardized testing have been raised by community and school leaders, as well as parents and members of the media. Some have expressed concern that children today are placed under such pressure to perform well on standardized tests that the anxiety adversely affects performance outcomes. This study examined the…

  16. How Standardized Tests Shape--and Limit--Student Learning. A Policy Research Brief

    ERIC Educational Resources Information Center

    National Council of Teachers of English, 2014

    2014-01-01

    The term "standardized" tests is often heard along with "high-stakes." Standardized tests are administered, scored, and interpreted in a consistent way, so that the performances of large groups of students can be compared. They are not in themselves high-stakes, but they are often used for high-stakes purposes such as…

  17. Alignment between High School Biology Curriculum Standard and the Standardised Tests of Four Provinces in China

    ERIC Educational Resources Information Center

    Lu, Qun; Liu, Enshan

    2012-01-01

    With the development and implementation of new curriculum standards, the field tests of education reform in senior high schools began in 2004 in four pilot provinces in mainland China. After five years of the reform, it is necessary to know how and to what extent the curriculum standard guides test classroom instruction. The present study was…

  18. Determining Paths to Success: Preparing Students for Experimental Design Questions on Standardized Tests

    ERIC Educational Resources Information Center

    Turner, Matthew J.; Rios, Jose M.

    2008-01-01

    Recent education reform efforts are at the forefront of educators' minds across the nation, science teachers notwithstanding. At least 48 states have developed a mandated standardized test, the majority of which also publish an individual school proficiency report. Washington State's new standardized science test is an example of such reforms…

  19. CSCOPE's Effect on Texas' State Mandated Standardized Test Scores in Mathematics

    ERIC Educational Resources Information Center

    Merritt, Brent Ross

    2011-01-01

    The purpose of the study was to examine standardized test scores of school districts in the state of Texas that have implemented CSCOPE, a popular curriculum management system, in an effort to determine what effect, if any, its implementation has had. The standardized test used in the state of the Texas is titled the Texas Assessment of Knowledge…

  20. Commercial versus Internally Developed Standardized Tests: Lessons from a Small Regional School

    ERIC Educational Resources Information Center

    Hadjicharalambous, Costas

    2014-01-01

    The author compares the efficacy of commercially available and internally developed standardized tests and evaluates their strengths and weakness in assessing student learning outcomes. The author shares the experience of a regional school in developing a standardized test to assess business knowledge. Data from a sample of 268 students were used…

  1. Standardized Tests and Other Criteria in Admissions Decisions: A Classroom Activity

    ERIC Educational Resources Information Center

    Pawlow, Laura A.

    2010-01-01

    This exercise aims to provide a hands-on, role-playing activity that requires students to evaluate the strengths and limitations of standardized tests in making admission decisions. Small groups pretend to be an admissions committee and review fictitious student applications containing both standardized test scores and other information admissions…

  2. Political Judgement, Freedom of Thought, and Standardized Testing: A Critical Enquiry

    ERIC Educational Resources Information Center

    Schuler, Matthew Edward

    2012-01-01

    The practice of "standardized" testing has been embedded in United States federal education policy since at least the passage of the Elementary and Secondary Education Act of 1965. The roots of standardized testing in American education, grounded in Kantian "Modern Thought," can be traced to the U.S. Military Academy at…

  3. Standard testing procedures for optical fiber and unshielded twisted pair at Sandia National Laboratories

    SciTech Connect

    Adams, R.L.

    1993-11-01

    This document will establish a working standard for testing optical fiber and unshielded twisted pair cables included in the Lab-wide telecommunications cabling system. The purpose of these standard testing procedures is to deliver to all Sandians a reliable, low-maintenance, state-of-the-art, ubiquitous telecommunications cabling infrastructure capable of satisfying all current and future telecommunication needs.

  4. Standard testing procedures for optical fiber and unshielded twisted pair at Sandia National Laboratories. Revision

    SciTech Connect

    Adams, R.L.

    1994-09-01

    This revision updates Sandia`s working standard for testing optical fiber and unshielded twisted pair cables included in the Lab-wide telecommunications cabling infrastructure. The purpose of these standard testing procedures is to deliver to all Sandians a reliable, low-maintenance, state-of-the-art, ubiquitous telecommunications cabling infrastructure capable of satisfying all current and future telecommunication needs.

  5. Estimating the Cost of Standardized Student Testing in the United States.

    ERIC Educational Resources Information Center

    Phelps, Richard P.

    2000-01-01

    Describes and contrasts different methods of estimating costs of standardized testing. Using a cost-accounting approach, compares gross and marginal costs and considers testing objects (test materials and services, personnel and student time, and administrative/building overhead). Social marginal costs of replacing existing tests with a national…

  6. Increased sensitivity of patch testing by standardized tape stripping beforehand: a multicentre diagnostic accuracy study.

    PubMed

    Dickel, Heinrich; Kreft, Burkhard; Kuss, Oliver; Worm, Margitta; Soost, Stephanie; Brasch, Jochen; Pfützner, Wolfgang; Grabbe, Jürgen; Angelova-Fischer, Irena; Elsner, Peter; Fluhr, Joachim; Altmeyer, Peter; Geier, Johannes

    2010-05-01

    As a modification of patch testing, the strip patch test was established to obtain more sensitive and reliable test results. Comparative data on diagnostic accuracy for both tests are missing. To compare the diagnostic accuracy of strip patch tests and patch tests in detecting sensitizations in patients with suspected allergic contact dermatitis by using patient history as the reference standard. In a multicentre, prospective, investigator-blinded study 790 patients were enrolled. The defined reference standard was established prior to patch testing. Patch tests were performed with nickel sulfate, potassium dichromate, and lanolin alcohol. Duplicate tests were simultaneously performed on both sides of the back, of which one randomly chosen side was tape stripped beforehand, according to a standardized procedure. Primary outcome was the difference in sensitivity between strip patch test and patch test. Seven hundred and eighty-seven patients were included in the analysis. Strip patch tests detected considerably more sensitization to nickel sulfate and potassium dichromate than patch tests: differences of sensitivities were 16.4% (95% CI, 8.7-24.1%) for nickel sulfate and 25.0% (95% CI, 8.9-41.0%) for potassium dichromate, both favouring the strip patch test. The standardized strip patch test proved to be accurate and clinically safe and is promising to improve diagnosis of allergic contact dermatitis beyond the patch test.

  7. 40 CFR 1066.145 - Test fuel, engine fluids, analytical gases, and other calibration standards.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 33 2014-07-01 2014-07-01 false Test fuel, engine fluids, analytical..., Measurement Instruments, Fuel, and Analytical Gas Specifications § 1066.145 Test fuel, engine fluids, analytical gases, and other calibration standards. (a) Test fuel. Use test fuel as specified in the...

  8. BSAC standardized disc susceptibility testing method (version 8).

    PubMed

    Andrews, J M

    2009-09-01

    azithromycin, clarithromycin, erythromycin and telithromycin (Table 15); clarithromycin and erythromycin MIC and zone diameter BPs for Moraxella catarrhalis (Table 16); azithromycin MIC BPs for Neisseria gonorrhoeae (Table 17); chloramphenicol and rifampicin MIC BPs for Neisseria meningitidis (Table 18); azithromycin MIC BPs for Haemophilus influenzae (Table 19); MIC BPs for metronidazole for Bacteroides fragilis, Bacteroides thetaiotaomicron and Clostridium perfringens (Tables 23-25, respectively); susceptibility testing of Listeria spp. (Appendix 3); the acceptable range for ATCC 25923 to a 10 microg tobramycin disc (Table 26).

  9. International round-robin experiment to test the International Organization for Standardization total-scattering draft standard.

    PubMed

    Kadkhoda, P; Müller, A; Ristau, D; Duparré, A; Gliech, S; Lauth, H; Schuhmann, U; Reng, N; Tilsch, M; Schuhmann, R; Amra, C; Deumie, C; Jolie, C; Kessler, H; Lindström, T; Ribbing, C G; Bennett, J M

    2000-07-01

    An international round-robin experiment has been conducted among laboratories in different countries to test the measurement and the data-analysis procedures in the International Organization for Standardization draft standard ISO/DIS 13696 for measuring total scattering from low-scatter laser optics. Ten laboratories measured total backscattering from high-reflectance mirrors, 50% beam splitters, and antireflection-coated windows. Results were sent to the Laser Zentrum Hannover, which acted as coordinator and analyzed all the backscattering data. The results showed that the procedure in the draft standard was useful for measuring and reporting backscattering for low-scatter optics. Problems encountered in the round-robin experiment included the accumulation of particles on the surfaces, particularly on the high-reflectance mirrors.

  10. Environmental testing of block 3 solar cell modules. Part 1: Qualification testing of standard production modules

    NASA Technical Reports Server (NTRS)

    Griffith, J. S.

    1979-01-01

    Qualification tests of solar cell modules are described. These modules continue to show improvement over earlier type modules tested. Cell cracking and delamination are less prevalent, and interconnect problems and electrical degradation from environmental testing are now rare.

  11. Preparation of Students in a Standards-Oriented Mathematics Curriculum for College Entrance Tests, Placement Tests, and Beginning Mathematics Courses.

    ERIC Educational Resources Information Center

    Schoen, Harold L.; Cebulla, Kristin J.; Winsor, Matthew S.

    The level of preparation for college entrance tests, university mathematics placement tests, and beginning college mathematics courses was studied for students who completed the Standards-oriented curriculum "Contemporary Mathematics in Context" (A. Coxford, J. Fey, C. Hirsch, H. Schoen, E. Hart, B. Keller, and A. Watkins, 2001), the…

  12. Flammability, Offgassing, and Compatibility Requirements and Test Procedures. Interim NASA Technical Standard

    NASA Technical Reports Server (NTRS)

    2009-01-01

    This Interim Standard establishes requirements for evaluation, testing, and selection of materials that are intended for use in space vehicles, associated Ground Support Equipment (GSE), and facilities used during assembly, test, and flight operations. Included are requirements, criteria, and test methods for evaluating the flammability, offgassing, and compatibility of materials.

  13. A Criterion-Referenced Viewpoint on Standards/Cutscores in Language Testing.

    ERIC Educational Resources Information Center

    Davidson, Fred; Lynch, Brian K.

    "Standard" is distinguished from "criterion" as it is used in criterion-referenced testing. The former is argued to refer to the real-world cutpoint at which a decision is made based on a test's result (e.g., exemption from a special training program). The latter is a skill or set of skills to which a test is referenced.…

  14. Postcolonial Technologies of Power: Standardized Testing and Representing Diverse Young Children

    ERIC Educational Resources Information Center

    Viruru, Radhika

    2006-01-01

    In this article, the author examines the construction of standardized testing not only as a cultural product, but as an imperialistic product. She conducts both a postcolonial discussion of the critique of testing and examines the ways that children of color are represented in the content. Recognizing first that the increased use of tests is part…

  15. High-Stakes Standardized Testing & Marginalized Youth: An Examination of the Impact on Those Who Fail

    ERIC Educational Resources Information Center

    Kearns, Laura-Lee

    2011-01-01

    This study examines the impact of high-stakes, large-scale, standardized literacy testing on youth who have failed the Ontario Secondary School Literacy Test. Interviews with youth indicate that the unintended impact of high-stakes testing is more problematic than policy makers and educators may realize. In contrast to literacy policy's aims to…

  16. Standard Setting in Specific-Purpose Language Testing: What Can a Qualitative Study Add?

    ERIC Educational Resources Information Center

    Manias, Elizabeth; McNamara, Tim

    2016-01-01

    This paper explores the views of nursing and medical domain experts in considering the standards for a specific-purpose English language screening test, the Occupational English Test (OET), for professional registration for immigrant health professionals. Since individuals who score performances in the test setting are often language experts…

  17. 14 CFR 125.293 - Crewmember: Tests and checks, grace provisions, accepted standards.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... AIRCRAFT Flight Crewmember Requirements § 125.293 Crewmember: Tests and checks, grace provisions, accepted standards. (a) If a crewmember who is required to take a test or a flight check under this part completes the test or flight check in the calendar month before or after the calendar month in which it...

  18. 14 CFR 125.293 - Crewmember: Tests and checks, grace provisions, accepted standards.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... AIRCRAFT Flight Crewmember Requirements § 125.293 Crewmember: Tests and checks, grace provisions, accepted standards. (a) If a crewmember who is required to take a test or a flight check under this part completes the test or flight check in the calendar month before or after the calendar month in which it...

  19. 14 CFR 125.293 - Crewmember: Tests and checks, grace provisions, accepted standards.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... AIRCRAFT Flight Crewmember Requirements § 125.293 Crewmember: Tests and checks, grace provisions, accepted standards. (a) If a crewmember who is required to take a test or a flight check under this part completes the test or flight check in the calendar month before or after the calendar month in which it...

  20. 14 CFR 125.293 - Crewmember: Tests and checks, grace provisions, accepted standards.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... AIRCRAFT Flight Crewmember Requirements § 125.293 Crewmember: Tests and checks, grace provisions, accepted standards. (a) If a crewmember who is required to take a test or a flight check under this part completes the test or flight check in the calendar month before or after the calendar month in which it...

  1. 14 CFR 125.293 - Crewmember: Tests and checks, grace provisions, accepted standards.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... AIRCRAFT Flight Crewmember Requirements § 125.293 Crewmember: Tests and checks, grace provisions, accepted standards. (a) If a crewmember who is required to take a test or a flight check under this part completes the test or flight check in the calendar month before or after the calendar month in which it...

  2. Language Proficiency, Ethnicity and Standardized Test Performance of Elementary School Students.

    ERIC Educational Resources Information Center

    Ima, Kenji; Labovitz, Eugene M.

    The differential effects of language proficiency on standardized test performance of elementary school students (grades 4 through 6 are examined for the San Diego (California) Unified School District. Ethnicity is examined as a mediating variable circumscribing the relationship between language proficiency and test performance. Test performance is…

  3. Development of Proposed Standards for Testing Solar Collectors and Thermal Storage Devices. NBS Technical Note 899.

    ERIC Educational Resources Information Center

    Hill, James E.; And Others

    A study has been made at the National Bureau of Standards of the different techniques that are or could be used for testing solar collectors and thermal storage devices that are used in solar heating and cooling systems. This report reviews the various testing methods and outlines a recommended test procedure, including apparatus and…

  4. Standard Setting in Specific-Purpose Language Testing: What Can a Qualitative Study Add?

    ERIC Educational Resources Information Center

    Manias, Elizabeth; McNamara, Tim

    2016-01-01

    This paper explores the views of nursing and medical domain experts in considering the standards for a specific-purpose English language screening test, the Occupational English Test (OET), for professional registration for immigrant health professionals. Since individuals who score performances in the test setting are often language experts…

  5. Readability Level of Standardized Test Items and Student Performance: The Forgotten Validity Variable

    ERIC Educational Resources Information Center

    Hewitt, Margaret A.; Homan, Susan P.

    2004-01-01

    Test validity issues considered by test developers and school districts rarely include individual item readability levels. In this study, items from a major standardized test were examined for individual item readability level and item difficulty. The Homan-Hewitt Readability Formula was applied to items across three grade levels. Results of…

  6. Factors Influencing the Selection of Standardized Tests for the Diagnosis of Specific Language Impairment

    ERIC Educational Resources Information Center

    Betz, Stacy K.; Eickhoff, Jessica R.; Sullivan, Shanleigh F.

    2013-01-01

    Purpose: Standardized tests are one of the primary assessment tools used by speech-language pathologists (SLPs) to diagnose child language impairment. Numerous child language tests are commercially available; however, it is unknown what factors lead clinicians to select particular tests to use in clinical practice. This study investigated whether…

  7. Factors Influencing the Selection of Standardized Tests for the Diagnosis of Specific Language Impairment

    ERIC Educational Resources Information Center

    Betz, Stacy K.; Eickhoff, Jessica R.; Sullivan, Shanleigh F.

    2013-01-01

    Purpose: Standardized tests are one of the primary assessment tools used by speech-language pathologists (SLPs) to diagnose child language impairment. Numerous child language tests are commercially available; however, it is unknown what factors lead clinicians to select particular tests to use in clinical practice. This study investigated whether…

  8. Synthesizing Information from Language Samples and Standardized Tests in School-Age Bilingual Assessment

    ERIC Educational Resources Information Center

    Ebert, Kerry Danahy; Pham, Giang

    2017-01-01

    Purpose: Although language samples and standardized tests are regularly used in assessment, few studies provide clinical guidance on how to synthesize information from these testing tools. This study extends previous work on the relations between tests and language samples to a new population--school-age bilingual speakers with primary language…

  9. Operationally Responsive Space Standard Bus Battery Thermal Balance Testing and Heat Dissipation Analysis

    NASA Technical Reports Server (NTRS)

    Marley, Mike

    2008-01-01

    The focus of this paper will be on the thermal balance testing for the Operationally Responsive Space Standard Bus Battery. The Standard Bus thermal design required that the battery be isolated from the bus itself. This required the battery to have its own thermal control, including heaters and a radiator surface. Since the battery was not ready for testing during the overall bus thermal balance testing, a separate test was conducted to verify the thermal design for the battery. This paper will discuss in detail, the test set up, test procedure, and results from this test. Additionally this paper will consider the methods taken to determine the heat dissipation of the battery during charge and discharge. It seems that the heat dissipation for Lithium Ion batteries is relatively unknown and hard to quantify. The methods used during test and the post test analysis to estimate the heat dissipation of the battery will be discussed.

  10. Operationally Responsive Space Standard Bus Battery Thermal Balance Testing and Heat Dissipation Analysis

    NASA Technical Reports Server (NTRS)

    Marley, Mike

    2008-01-01

    The focus of this paper will be on the thermal balance testing for the Operationally Responsive Space Standard Bus Battery. The Standard Bus thermal design required that the battery be isolated from the bus itself. This required the battery to have its own thermal control, including heaters and a radiator surface. Since the battery was not ready for testing during the overall bus thermal balance testing, a separate test was conducted to verify the thermal design for the battery. This paper will discuss in detail, the test set up, test procedure, and results from this test. Additionally this paper will consider the methods taken to determine the heat dissipation of the battery during charge and discharge. It seems that the heat dissipation for Lithium Ion batteries is relatively unknown and hard to quantify. The methods used during test and the post test analysis to estimate the heat dissipation of the battery will be discussed.

  11. Standard Errors and Confidence Intervals of Norm Statistics for Educational and Psychological Tests.

    PubMed

    Oosterhuis, Hannah E M; van der Ark, L Andries; Sijtsma, Klaas

    2016-11-14

    Norm statistics allow for the interpretation of scores on psychological and educational tests, by relating the test score of an individual test taker to the test scores of individuals belonging to the same gender, age, or education groups, et cetera. Given the uncertainty due to sampling error, one would expect researchers to report standard errors for norm statistics. In practice, standard errors are seldom reported; they are either unavailable or derived under strong distributional assumptions that may not be realistic for test scores. We derived standard errors for four norm statistics (standard deviation, percentile ranks, stanine boundaries and Z-scores) under the mild assumption that the test scores are multinomially distributed. A simulation study showed that the standard errors were unbiased and that corresponding Wald-based confidence intervals had good coverage. Finally, we discuss the possibilities for applying the standard errors in practical test use in education and psychology. The procedure is provided via the R function check.norms, which is available in the mokken package.

  12. Interpretation of reference toxicant tests in standard test procedures for sediment: How important are they?

    SciTech Connect

    Mueller, C.A.; Thursby, G.B.; Schlekat, C.E.; Scott, K.J.

    1994-12-31

    At SAIC`s Environmental Testing Center (ETC) 10-day solid-phase sediment toxicity tests using marine and estuarine amphipods are routinely conducted with a concurrent 96-hour water-only cadmium or sodium dodecyl sulfate (SDS) reference toxicant test and with a negative control sediment collected from central Long Island Sound (LIS). Reference toxicant tests are performed to evaluate test organism sensitivity. A negative control is used to evaluate laboratory ability to obtain consistent, precise results. Analysis of data from over 100 tests revealed that four situations may arise: results obtained from both the reference toxicant test and the negative control are acceptable; results from both are unacceptable; reference toxicant tests results are acceptable but negative control survival is not; and reference toxicant test results are unacceptable but negative control survival is acceptable. The latter case is of greatest interest during data interpretation. Analyses indicate that failed reference toxicant tests rarely affect interpretation of sediment test data. Therefore, the authors recommend that the use of reference toxicant tests be restricted to documentation of ongoing laboratory performance rather than interpretation of specific test results.

  13. Student science achievement and the integration of Indigenous knowledge on standardized tests

    NASA Astrophysics Data System (ADS)

    Dupuis, Juliann; Abrams, Eleanor

    2016-08-01

    In this article, we examine how American Indian students in Montana performed on standardized state science assessments when a small number of test items based upon traditional science knowledge from a cultural curriculum, "Indian Education for All", were included. Montana is the first state in the US to mandate the use of a culturally relevant curriculum in all schools and to incorporate this curriculum into a portion of the standardized assessment items. This study compares White and American Indian student test scores on these particular test items to determine how White and American Indian students perform on culturally relevant test items compared to traditional standard science test items. The connections between student achievement on adapted culturally relevant science test items versus traditional items brings valuable insights to the fields of science education, research on student assessments, and Indigenous studies.

  14. Student science achievement and the integration of Indigenous knowledge on standardized tests

    NASA Astrophysics Data System (ADS)

    Dupuis, Juliann; Abrams, Eleanor

    2017-09-01

    In this article, we examine how American Indian students in Montana performed on standardized state science assessments when a small number of test items based upon traditional science knowledge from a cultural curriculum, "Indian Education for All", were included. Montana is the first state in the US to mandate the use of a culturally relevant curriculum in all schools and to incorporate this curriculum into a portion of the standardized assessment items. This study compares White and American Indian student test scores on these particular test items to determine how White and American Indian students perform on culturally relevant test items compared to traditional standard science test items. The connections between student achievement on adapted culturally relevant science test items versus traditional items brings valuable insights to the fields of science education, research on student assessments, and Indigenous studies.

  15. 14 CFR 135.301 - Crewmember: Tests and checks, grace provisions, training to accepted standards.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... provisions, training to accepted standards. 135.301 Section 135.301 Aeronautics and Space FEDERAL AVIATION...: CERTIFICATION AND OPERATIONS OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING..., grace provisions, training to accepted standards. (a) If a crewmember who is required to take a test...

  16. 14 CFR 135.301 - Crewmember: Tests and checks, grace provisions, training to accepted standards.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... provisions, training to accepted standards. 135.301 Section 135.301 Aeronautics and Space FEDERAL AVIATION...: CERTIFICATION AND OPERATIONS OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING..., grace provisions, training to accepted standards. (a) If a crewmember who is required to take a test...

  17. 14 CFR 135.301 - Crewmember: Tests and checks, grace provisions, training to accepted standards.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... provisions, training to accepted standards. 135.301 Section 135.301 Aeronautics and Space FEDERAL AVIATION...: CERTIFICATION AND OPERATIONS OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING..., grace provisions, training to accepted standards. (a) If a crewmember who is required to take a test...

  18. 14 CFR 135.301 - Crewmember: Tests and checks, grace provisions, training to accepted standards.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... provisions, training to accepted standards. 135.301 Section 135.301 Aeronautics and Space FEDERAL AVIATION...: CERTIFICATION AND OPERATIONS OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING..., grace provisions, training to accepted standards. (a) If a crewmember who is required to take a test...

  19. Virginia Standards of Learning Assessments. Grade 8 Released Test Items, 1998.

    ERIC Educational Resources Information Center

    Virginia State Dept.of Education, Richmond. Div. of Assessment and Reporting.

    Beginning in Spring 1998, Virginia students participated in the Standards of Learning (SOL) assessments designed to test student knowledge of the content and skills specified in the state's standards. This document contains questions that approximately 79,000 students in grade 8 were required to answer as part of the SOL assessments. These…

  20. Virginia Standards of Learning Assessments. Grade 3 Released Test Items, 1998.

    ERIC Educational Resources Information Center

    Virginia State Dept.of Education, Richmond. Div. of Assessment and Reporting.

    Beginning in Spring 1998, Virginia students participated in the Standards of Learning (SOL) Assessments designed to test student knowledge of the content and skills specified in the state's standards. This document contains questions that approximately 83,000 students in grade 3 were required to answer as part of the SOL assessments. These…

  1. Virginia Standards of Learning Assessments. Grade 5 Released Test Items, 1998.

    ERIC Educational Resources Information Center

    Virginia State Dept.of Education, Richmond. Div. of Assessment and Reporting.

    Beginning in Spring 1998, Virginia students participated in the Standards of Learning (SOL) assessments designed to test student knowledge of the content and skills specified in the state's standards. This document contains questions that approximately 80,000 students in grade 5 were required to answer as part of the SOL assessments. These…

  2. 46 CFR 160.060-7 - Inspections and tests-standard and nonstandard vests. 1

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Inspections and tests-standard and nonstandard vests. 1... Buoyant Vest, Unicellular Polyethylene Foam, Adult and Child § 160.060-7 Inspections and tests—standard and nonstandard vests. 1 1 The manufacturer of a personal flotation device must meet 33 CFR...

  3. 16 CFR 1610.35 - Procedures for testing special types of textile fabrics under the standard.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 16 Commercial Practices 2 2011-01-01 2011-01-01 false Procedures for testing special types of textile fabrics under the standard. 1610.35 Section 1610.35 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION FLAMMABLE FABRICS ACT REGULATIONS STANDARD FOR THE FLAMMABILITY OF CLOTHING TEXTILES Rules...

  4. To Dream the Impossible Dream: Four Approaches to National Standards and Tests for America's Schools

    ERIC Educational Resources Information Center

    Finn, Chester E., Jr.; Julian, Liam; Petrilli, Michael J.

    2006-01-01

    Education policy leaders from across the political spectrum identified and evaluated four models that national standards and testing could take. These models are: (1) "The Whole Enchilada," the most direct and aggressive approach in which the federal government creates and enforces national standards and assessments, replacing the…

  5. 40 CFR 80.176 - Alternative certification test procedures and standards.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... (CONTINUED) AIR PROGRAMS (CONTINUED) REGULATION OF FUELS AND FUEL ADDITIVES Detergent Gasoline § 80.176... requirements and performance standards which must be met in order to certify detergent additives for use in... and the performance standards met when the subject detergent additive is mixed in a test fuels meeting...

  6. Virginia Standards of Learning Assessments. End of Course Released Test Items, 1998.

    ERIC Educational Resources Information Center

    Virginia State Dept.of Education, Richmond. Div. of Assessment and Reporting.

    Beginning in Spring 1998, Virginia students participated in the Standards of Learning (SOL) assessments designed to test student knowledge of the content and skills specified in the state's standards. This document contains questions that students were required to answer as part of the SOL End-of-Course assessments. These questions are…

  7. Grading as a Reform Effort: Do Standards-Based Grades Converge with Test Scores?

    ERIC Educational Resources Information Center

    Welsh, Megan E.; D'Agostino, Jerome V.; Kaniskan, Burcu

    2013-01-01

    Standards-based progress reports (SBPRs) require teachers to grade students using the performance levels reported by state tests and are an increasingly popular report card format. They may help to increase teacher familiarity with state standards, encourage teachers to exclude nonacademic factors from grades, and/or improve communication with…

  8. 16 CFR 1610.35 - Procedures for testing special types of textile fabrics under the standard.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 2 2012-01-01 2012-01-01 false Procedures for testing special types of textile fabrics under the standard. 1610.35 Section 1610.35 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION FLAMMABLE FABRICS ACT REGULATIONS STANDARD FOR THE FLAMMABILITY OF CLOTHING TEXTILES Rules and Regulations § 1610.35 Procedures...

  9. 16 CFR 1610.35 - Procedures for testing special types of textile fabrics under the standard.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 16 Commercial Practices 2 2013-01-01 2013-01-01 false Procedures for testing special types of textile fabrics under the standard. 1610.35 Section 1610.35 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION FLAMMABLE FABRICS ACT REGULATIONS STANDARD FOR THE FLAMMABILITY OF CLOTHING TEXTILES Rules and Regulations § 1610.35 Procedures...

  10. 16 CFR 1610.35 - Procedures for testing special types of textile fabrics under the standard.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 16 Commercial Practices 2 2014-01-01 2014-01-01 false Procedures for testing special types of textile fabrics under the standard. 1610.35 Section 1610.35 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION FLAMMABLE FABRICS ACT REGULATIONS STANDARD FOR THE FLAMMABILITY OF CLOTHING TEXTILES Rules and Regulations § 1610.35 Procedures...

  11. 29 CFR 1630.10 - Qualification standards, tests, and other selection criteria.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... covered entity to use qualification standards, employment tests or other selection criteria that screen out or tend to screen out an individual with a disability or a class of individuals with disabilities...

  12. Standard Practice for Dosimetry of Proton Beams for use in Radiation Effects Testing of Electronics

    SciTech Connect

    McMahan, Margaret A.; Blackmore, Ewart; Cascio, Ethan W.; Castaneda, Carlos; von Przewoski, Barbara; Eisen, Harvey

    2008-07-25

    Representatives of facilities that routinely deliver protons for radiation effect testing are collaborating to establish a set of standard best practices for proton dosimetry. These best practices will be submitted to the ASTM International for adoption.

  13. Not All Tests Are Created Equal: Parental Rights and Standardized Tests

    ERIC Educational Resources Information Center

    O'Brien, Jason; Winn, Russell; Currier, Kirsten

    2014-01-01

    This case focuses on one parent's request to have his daughter exempted from district-mandated computer tests (called STAR Enterprise tests). These tests are administered several times per year as a formative assessment to gauge student achievement in the areas of reading and math. The parent was concerned that the district was spending too much…

  14. Does Test Item Performance Increase with Test-to-Standards Alignment?

    ERIC Educational Resources Information Center

    Traynor, Anne

    2017-01-01

    Variation in test performance among examinees from different regions or national jurisdictions is often partially attributed to differences in the degree of content correspondence between local school or training program curricula, and the test of interest. This posited relationship between test-curriculum correspondence, or "alignment,"…

  15. Test Anxiety and a High-Stakes Standardized Reading Comprehension Test: A Behavioral Genetics Perspective

    ERIC Educational Resources Information Center

    Wood, Sarah G.; Hart, Sara A.; Little, Callie W.; Phillips, Beth M.

    2016-01-01

    Past research suggests that reading comprehension test performance does not rely solely on targeted cognitive processes such as word reading, but also on other nontarget aspects such as test anxiety. Using a genetically sensitive design, we sought to understand the genetic and environmental etiology of the association between test anxiety and…

  16. 40 CFR 790.55 - Modification of test standards or schedules during conduct of test.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... to modify the test schedule for the mandatory testing conditions or requirements (i.e., “shall... § 790.5(b), or by phone with written confirmation to follow within 10 working days. Applications must... to provide guidance or to clarify a non-mandatory testing requirement (i.e., “should statements”) in...

  17. Evaluation of Experimental Tests Administered Spring 1969 with the Standard Washington Pre-College Test Battery.

    ERIC Educational Resources Information Center

    Lunneborg, Clifford; Lunneborg, Patricia W.

    The Washington Pre-College (WPC) Testing Program, together with experimental tests administered in Spring 1969, was analyzed to instigate a new guidance system for high school juniors and seniors. Initially, WPC employed predictors established on an already selected intellectual group. New test predictors were needed to match the complexity of the…

  18. How a Standardized Achievement Test is Built. Test Service Notebook 125.

    ERIC Educational Resources Information Center

    Burrill, Lois E.

    Procedures which are used by Harcourt, Brace Jovanovich, Inc., in developing achievement tests are described; these steps are suggested to be typical of major test publishers. A curricular analysis of fifth grade mathematics textbooks is presented, to illustrate the process which determines which skills and objectives are tested. The…

  19. Considerations for a Standardized Test for Potential-Induced Degradation of Crystalline Silicon PV Modules (Presentation)

    SciTech Connect

    Hacke, P.

    2012-03-01

    Over the past decade, there have been observations of module degradation and power loss because of the stress that system voltage bias exerts. This results in part from qualification tests and standards note adequately evaluating for the durability of modules to the long-term effects of high voltage bias that they experience in fielded arrays. This talk deals with factors for consideration, progress, and information still needed for a standardized test for degradation due to system voltage stress.

  20. Results of testing and evaluating a health physics instrument performance standard

    SciTech Connect

    Kenoyer, J.L.; Swinth, K.L.; Kathren, R.L.; Fleming, D.M.; Selby, J.M.; Vallario, E.J.; Federline, M.V.

    1983-09-01

    This paper presents data taken during testing of health physics instrumentation that provides information for the evaluation of the applicability and practicality of the proposed ANSI standard (N42.17) and the determination of the degree of conformance of currently available instruments to the proposed standard. The instruments tested included ionization chambers, Geiger Mueller detectors, alpha survey meters, neutron dose equivalent survey meters, and air monitors. (ACR)

  1. 40 CFR 201.27 - Procedures for: (1) Determining applicability of the locomotive load cell test stand standard and...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... applicability of the locomotive load cell test stand standard and switcher locomotive standard by noise measurement on a receiving property; (2) measurement of locomotive load cell test stands more than 120 meters... locomotive load cell test stand standard and switcher locomotive standard by noise measurement on a...

  2. 40 CFR 201.27 - Procedures for: (1) Determining applicability of the locomotive load cell test stand standard and...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... applicability of the locomotive load cell test stand standard and switcher locomotive standard by noise measurement on a receiving property; (2) measurement of locomotive load cell test stands more than 120 meters... locomotive load cell test stand standard and switcher locomotive standard by noise measurement on a...

  3. Student science achievement and the integration of indigenous knowledge in the classroom and on standardized tests

    NASA Astrophysics Data System (ADS)

    Benson, Juliann

    In science education, there has been little research focused on indigenous students' achievement on science standardized tests when indigenous knowledge is integrated into the test questions. However, there has been an increased amount of research investigating the impact of culturally relevant curriculum adaptations on indigenous students' achievement in standardized assessments (Aikenhead, 1997, 2001b; Barnhardt, 2005b). This dissertation examines the achievement gap that is present between American Indian and White students in Montana. I use data from Montana eighth-grade standardized state science tests to determine whether incorporating indigenous material into classrooms and on state standardized science tests supported these initiatives and whether expected outcomes, such as a decrease in the achievement gap and in increase in Native student test scores, are being generated. Using a quantitative methodology, this study focuses on how American Indian students in Montana perform on standardized state science assessments when knowledge from a cultural curriculum, "Indian Education for All," has been included on the tests. Montana is the first state in the United States to use a culturally relevant curriculum in all schools and to create standardized test items based on this curriculum. This study compares White and American Indian students' test scores on these particular test items and overall test scores to determine the effectiveness of the culturally relevant educational initiatives implemented by Montana's Office of Public Instruction in terms of student achievement on state standardized tests. Results of this study uncover the persistence of an achievement gap, with Native students still underperforming when compared to their majority counterparts. American Indian students continue to score at the "nearing proficiency" level, which is one level lower than White students are scoring, at the proficient level. When scores are investigated for items written

  4. Using standardized tests to inventory consonant and vowel production: a comparison of 11 tests of articulation and phonology.

    PubMed

    Eisenberg, Sarita L; Hitchcock, Elaine R

    2010-10-01

    This report considered the validity of making conclusions about a child's phonetic inventory (the sounds a child can and cannot produce spontaneously without a prior model or other stimulation) based on the data from standardized single-word tests of articulation or phonology. We evaluated the opportunities for production of word-initial consonants, word-final consonants, and vowels within the words included on 11 tests. Only words that met specific phonetic criteria (termed phonetically controlled words) were counted as opportunities for each consonant or vowel. None of the tests provided sufficient coverage of consonants or vowels for establishing a phonetic inventory and making conclusions about the segments that a child can and cannot produce. Use of the data from a single standardized test of articulation or phonology would not be sufficient for completely inventorying a child's consonant and vowel production and selecting targets for therapy. It is recommended that clinicians supplement test data by probing production in additional phonetically controlled words.

  5. A standardized framework for the validation and verification of clinical molecular genetic tests.

    PubMed

    Mattocks, Christopher J; Morris, Michael A; Matthijs, Gert; Swinnen, Elfriede; Corveleyn, Anniek; Dequeker, Els; Müller, Clemens R; Pratt, Victoria; Wallace, Andrew

    2010-12-01

    The validation and verification of laboratory methods and procedures before their use in clinical testing is essential for providing a safe and useful service to clinicians and patients. This paper outlines the principles of validation and verification in the context of clinical human molecular genetic testing. We describe implementation processes, types of tests and their key validation components, and suggest some relevant statistical approaches that can be used by individual laboratories to ensure that tests are conducted to defined standards.

  6. A standardized framework for the validation and verification of clinical molecular genetic tests

    PubMed Central

    Mattocks, Christopher J; Morris, Michael A; Matthijs, Gert; Swinnen, Elfriede; Corveleyn, Anniek; Dequeker, Els; Müller, Clemens R; Pratt, Victoria; Wallace, Andrew

    2010-01-01

    The validation and verification of laboratory methods and procedures before their use in clinical testing is essential for providing a safe and useful service to clinicians and patients. This paper outlines the principles of validation and verification in the context of clinical human molecular genetic testing. We describe implementation processes, types of tests and their key validation components, and suggest some relevant statistical approaches that can be used by individual laboratories to ensure that tests are conducted to defined standards. PMID:20664632

  7. A comparison of the standard category test with a new computer version.

    PubMed

    Silk-Eglit, Graham M; Gunner, Jessica H; Miele, Andrea S; Lynch, Julie K; McCaffrey, Robert J

    2014-01-01

    The Halstead Category Test is a popular measure of abstraction, concept formation, and logical analysis skills. Due to its large apparatus, however, ease of administration of the standard Category Test is limited. For this reason, a number of computer versions of the Category Test have been developed to facilitate its administration. The current study evaluated the equivalence of a new computer version to the standard Category Test in a sample of undergraduate students. Analyses revealed that the two versions did not differ significantly on subtest error scores, total error scores, or Neuropsychological Deficit Scale scores. Results of the current study support the equivalence of this new computer version to the standard version of the Category Test.

  8. A Step Towards Electric Propulsion Testing Standards: Pressure Measurements and Effective Pumping Speeds

    NASA Technical Reports Server (NTRS)

    Dankanich, John W.; Swiatek, Michael W.; Yim, John T.

    2012-01-01

    The electric propulsion community has been implored to establish and implement a set of universally applicable test standards during the research, development, and qualification of electric propulsion systems. Existing practices are fallible and result in testing variations which leads to suspicious results, large margins in application, or aversion to mission infusion. Performance measurements and life testing under appropriate conditions can be costly and lengthy. Measurement practices must be consistent, accurate, and repeatable. Additionally, the measurements must be universally transportable across facilities throughout the development, qualification, spacecraft integration and on-orbit performance. A preliminary step to progress towards universally applicable testing standards is outlined for facility pressure measurements and effective pumping speed calculations. The standard has been applied to multiple facilities at the NASA Glenn Research Center. Test results and analyses of universality of measurements are presented herein.

  9. Toxicity testing of dispersed oil requires adherence to standardized protocols to assess potential real world effects.

    PubMed

    Coelho, Gina; Clark, James; Aurand, Don

    2013-06-01

    Recently, several researchers have attempted to address Deepwater Horizon incident environmental fate and effects issues using laboratory testing and extrapolation procedures that are not fully reliable measures for environmental assessments. The 2013 Rico-Martínez et al. publication utilized laboratory testing approaches that severely limit our ability to reliably extrapolate such results to meaningful real-world assessments. The authors did not adopt key methodological elements of oil and dispersed oil toxicity standards. Further, they drew real-world conclusions from static exposure tests without reporting actual exposure concentrations. Without this information, it is not possible to compare their results to other research or real spill events that measured and reported exposure concentrations. The 1990s' Chemical Response to Oil Spills: Ecological Effects Research Forum program was established to standardize and conduct exposure characterization in oil and dispersed oil aquatic toxicity testing (Aurand and Coelho, 2005). This commentary raises awareness regarding the necessity of standardized test protocols.

  10. PV Standards Work: Photovoltaic System and Component Certification, Test Facility Accreditation, and Solar Photovoltaic Energy Systems International Standards

    SciTech Connect

    Basso, T. S.; Chalmers, S.; Barikmo, H. O.

    2005-11-01

    This paper discusses efforts led by two companies (PowerMark Corporation and Sunset Technologies Inc.) to support both U.S. domestic and international photovoltaic (PV) system and component certification and test facility accreditation programs and the operation of the International Electrotechnical Commission (IEC) Technical Committee 82 (TC-82) Photovoltaic Energy Systems. International and national PV certification/accreditation programs are successfully facilitating entry of only the highest quality PV products into the marketplace. Standards also continue to be a cornerstone for assuring global PV product conformity assessment, reducing non-tariff trade barriers, and ultimately improving PV products while lowering cost.

  11. Adults with poor reading skills: How lexical knowledge interacts with scores on standardized reading comprehension tests

    PubMed Central

    McKoon, Gail; Ratcliff, Roger

    2016-01-01

    Millions of adults in the United States lack the necessary literacy skills for most living wage jobs. For students from adult learning classes, we used a lexical decision task to measure their knowledge of words and we used a decision-making model (Ratcliff’s, 1978, diffusion model) to abstract the mechanisms underlying their performance from their RTs and accuracy. We also collected scores for each participant on standardized IQ tests and standardized reading tests used commonly in the education literature. We found significant correlations between the model’s estimates of the strengths with which words are represented in memory and scores for some of the standardized tests but not others. The findings point to the feasibility and utility of combining a test of word knowledge, lexical decision, that is well-established in psycholinguistic research, a decision-making model that supplies information about underlying mechanisms, and standardized tests. The goal for future research is to use this combination of approaches to understand better how basic processes relate to standardized tests with the eventual aim of understanding what these tests are measuring and what the specific difficulties are for individual, low-literacy adults. PMID:26550803

  12. Adults with poor reading skills: How lexical knowledge interacts with scores on standardized reading comprehension tests.

    PubMed

    McKoon, Gail; Ratcliff, Roger

    2016-01-01

    Millions of adults in the United States lack the necessary literacy skills for most living wage jobs. For students from adult learning classes, we used a lexical decision task to measure their knowledge of words and we used a decision-making model (Ratcliff's, 1978, diffusion model) to abstract the mechanisms underlying their performance from their RTs and accuracy. We also collected scores for each participant on standardized IQ tests and standardized reading tests used commonly in the education literature. We found significant correlations between the model's estimates of the strengths with which words are represented in memory and scores for some of the standardized tests but not others. The findings point to the feasibility and utility of combining a test of word knowledge, lexical decision, that is well-established in psycholinguistic research, a decision-making model that supplies information about underlying mechanisms, and standardized tests. The goal for future research is to use this combination of approaches to understand better how basic processes relate to standardized tests with the eventual aim of understanding what these tests are measuring and what the specific difficulties are for individual, low-literacy adults. Copyright © 2015. Published by Elsevier B.V.

  13. Test Standard Developed for Determining the Slow Crack Growth of Advanced Ceramics at Ambient Temperature

    NASA Technical Reports Server (NTRS)

    Choi, Sung R.; Salem, Jonathan A.

    1998-01-01

    The service life of structural ceramic components is often limited by the process of slow crack growth. Therefore, it is important to develop an appropriate testing methodology for accurately determining the slow crack growth design parameters necessary for component life prediction. In addition, an appropriate test methodology can be used to determine the influences of component processing variables and composition on the slow crack growth and strength behavior of newly developed materials, thus allowing the component process to be tailored and optimized to specific needs. At the NASA Lewis Research Center, work to develop a standard test method to determine the slow crack growth parameters of advanced ceramics was initiated by the authors in early 1994 in the C 28 (Advanced Ceramics) committee of the American Society for Testing and Materials (ASTM). After about 2 years of required balloting, the draft written by the authors was approved and established as a new ASTM test standard: ASTM C 1368-97, Standard Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress-Rate Flexural Testing at Ambient Temperature. Briefly, the test method uses constant stress-rate testing to determine strengths as a function of stress rate at ambient temperature. Strengths are measured in a routine manner at four or more stress rates by applying constant displacement or loading rates. The slow crack growth parameters required for design are then estimated from a relationship between strength and stress rate. This new standard will be published in the Annual Book of ASTM Standards, Vol. 15.01, in 1998. Currently, a companion draft ASTM standard for determination of the slow crack growth parameters of advanced ceramics at elevated temperatures is being prepared by the authors and will be presented to the committee by the middle of 1998. Consequently, Lewis will maintain an active leadership role in advanced ceramics standardization within ASTM

  14. Test Standard Developed for Determining the Slow Crack Growth of Advanced Ceramics at Ambient Temperature

    NASA Technical Reports Server (NTRS)

    Choi, Sung R.; Salem, Jonathan A.

    1998-01-01

    The service life of structural ceramic components is often limited by the process of slow crack growth. Therefore, it is important to develop an appropriate testing methodology for accurately determining the slow crack growth design parameters necessary for component life prediction. In addition, an appropriate test methodology can be used to determine the influences of component processing variables and composition on the slow crack growth and strength behavior of newly developed materials, thus allowing the component process to be tailored and optimized to specific needs. At the NASA Lewis Research Center, work to develop a standard test method to determine the slow crack growth parameters of advanced ceramics was initiated by the authors in early 1994 in the C 28 (Advanced Ceramics) committee of the American Society for Testing and Materials (ASTM). After about 2 years of required balloting, the draft written by the authors was approved and established as a new ASTM test standard: ASTM C 1368-97, Standard Test Method for Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant Stress-Rate Flexural Testing at Ambient Temperature. Briefly, the test method uses constant stress-rate testing to determine strengths as a function of stress rate at ambient temperature. Strengths are measured in a routine manner at four or more stress rates by applying constant displacement or loading rates. The slow crack growth parameters required for design are then estimated from a relationship between strength and stress rate. This new standard will be published in the Annual Book of ASTM Standards, Vol. 15.01, in 1998. Currently, a companion draft ASTM standard for determination of the slow crack growth parameters of advanced ceramics at elevated temperatures is being prepared by the authors and will be presented to the committee by the middle of 1998. Consequently, Lewis will maintain an active leadership role in advanced ceramics standardization within ASTM

  15. Standardization Efforts for Mechanical Testing and Design of Advanced Ceramic Materials and Components

    NASA Technical Reports Server (NTRS)

    Salem, Jonathan A.; Jenkins, Michael G.

    2003-01-01

    Advanced aerospace systems occasionally require the use of very brittle materials such as sapphire and ultra-high temperature ceramics. Although great progress has been made in the development of methods and standards for machining, testing and design of component from these materials, additional development and dissemination of standard practices is needed. ASTM Committee C28 on Advanced Ceramics and ISO TC 206 have taken a lead role in the standardization of testing for ceramics, and recent efforts and needs in standards development by Committee C28 on Advanced Ceramics will be summarized. In some cases, the engineers, etc. involved are unaware of the latest developments, and traditional approaches applicable to other material systems are applied. Two examples of flight hardware failures that might have been prevented via education and standardization will be presented.

  16. IDENTIFYING ESCHERICHIA SPECIES WITH BIOCHEMICAL TEST KITS AND STANDARD BACTERIOLOGICAL TESTS

    EPA Science Inventory

    Two commercially available biochemical test systems were evaluated for their ability to accurately identify speies of the genus Escherichia. Three laboratories participated in the study. The test kits did not always correctly identify species of Escherichia, but only once was a...

  17. The Citywide Standardized Testing Program for Middle and High Schools (A Testing Manual).

    ERIC Educational Resources Information Center

    Stratton, Julius A.

    The relationship between the Instructional Process, Instructional Objectives, and Assessment Tasks, identified at the School City of Gary, Indiana, necessitate an effective testing program. Four characteristics perceived crucial to a sound program were: (1) The program should be continuous, (2) The testing program should be comprehensive, (3)…

  18. Test methods and standards development for active solar heating and cooling systems

    NASA Astrophysics Data System (ADS)

    Trechsel, H. R.; Collins, B. L.

    1984-04-01

    Since test methods and standards for active solar heating and cooling systems did not exist in 1976, the Department of Energy sponsored research at the National Bureau of Standards (NBS) and other laboratories to aid in the development of research-based standards. This research was intended to facilitate a sound data base for the development of national consensus standards and test methods. Research by NBS and other laboratories is described for solar domestic hot water systems, solar collectors, thermal storage devices and collector materials. For collectors, research and test methods are described for determining the performance of cover plates, absorber materials, collector insulation, gaskets and sealants, rubber hose, containment materials, and heat transfer fluids.

  19. The Influence of Foreign Language Learning during Early Childhood on Standardized Test Scores

    ERIC Educational Resources Information Center

    Shaw, Tommetta

    2010-01-01

    Increasing standardized test scores in reading and math is of high importance to the California Department of Education to meet requirements mandated by the No Child Left Behind (NCLB) act of 2001. More research is needed to understand the best ways to improve tests scores to meet concerns of the NCLB act. The purpose of the study was to evaluate…

  20. Using Modern Test Theory to Maintain Standards in Public Qualifications in England

    ERIC Educational Resources Information Center

    Wheadon, Christopher

    2013-01-01

    This paper describes how item response theory (IRT) methods of test-equating could be applied to the maintenance of public examination standards in England. IRT methods of test-equating have been sparingly applied to the main public examinations in England, namely the General Certificate of Secondary Education (GCSE), the equivalent of a school…