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1

Robust Tests for the Equality of Variances  

Microsoft Academic Search

Alternative formulations of Levene's test statistic for equality of variances are found to be robust under nonnormality. These statistics use more robust estimators of central location in place of the mean. They are compared with the unmodified Levene's statistic, a jackknife procedure, and a ? test suggested by Layard which are all found to be less robust under nonnormality.

Morton B. Brown; Alan B. Forsythe

1974-01-01

2

Modeling robustness behavior using aspect-oriented modeling to support robustness testing of industrial systems  

Microsoft Academic Search

Model-based robustness testing requires precise and complete behavioral, robustness modeling. For example, state machines\\u000a can be used to model software behavior when hardware (e.g., sensors) breaks down and be fed to a tool to automate test case\\u000a generation. But robustness behavior is a crosscutting behavior and, if modeled directly, often results in large, complex state\\u000a machines. These in practice tend

Shaukat Ali; Lionel C. Briand; Hadi Hemmati

3

Updating robust reliability using structural test data  

Microsoft Academic Search

The concept of robust reliability is defined to take into account uncertainties from structural modeling in addition to the uncertain excitation that a structure will experience during its lifetime. A Bayesian probabilistic methodology for system identification is integrated with probabilistic structural analysis tools for the purpose of updating the assessment of the robust reliability based on dynamic test data. Methods

C. Papadimitriou; J. L. Beck; L. S. Katafygiotis

2001-01-01

4

Selected issues on robust testing for normality  

NASA Astrophysics Data System (ADS)

Normal distribution is mostly used distribution in statistics, dating back to the Karl F. Gauss. It is used in many branches of statistics, however, testing for normality is not well understood. But which deviations from theoretical normality are still acceptable for a given statistical procedure? This contribution aims towards better understanding of such problems. In particular, we study how much effects the violation of ANOVA prerequisites the underlying inference. It is clear, that one should develop a proper robustness in a given setup, under which the statistical analysis is still reliable. We also study the influence of outliers in dataset, in particular with focus on the tradeoff between power and robustness.

Moder, Karl; St?elec, Luboš; Stehlík, Milan

2013-10-01

5

Robust Correctness Testing for Digital Forensic Tools  

NASA Astrophysics Data System (ADS)

In previous work, the authors presented a theoretical lower bound on the required number of testing runs for performance testing of digital forensic tools. We also demonstrated a practical method of testing showing how to tolerate both measurement and random errors in order to achieve results close to this bound. In this paper, we extend the previous work to the situation of correctness testing.

Pan, Lei; Batten, Lynn M.

6

A bounded index test to make robust heterogeneous welfare comparisons  

Microsoft Academic Search

Fleurbaey et al. (2003) develop a bounded dominance test to make robust welfare comparisons, which is intermediate between Ebert's (1999) cardinal dominance criterion-generalized Lorenz dominance applied to household incomes, divided and weighted by an equivalence scale-and Bourguignon's (1989) ordinal dominance criterion. In this paper, we develop a more complete, but less robust bounded index test, which is intermediate between Ebert's

André Decoster; Erwin Ooghe

2006-01-01

7

A Bounded Index Test to make Robust Heterogeneous Welfare Comparisons  

Microsoft Academic Search

Fleurbaey, Hagneré and Trannoy (2003) develop a bounded dominance test to make robust welfare comparisons, which is intermediate between Ebert’s (1999) cardinal dominance criterion – generalized Lorenz dominance applied to household incomes, divided and weighted by an equivalence scale – and Bourguignon’s (1989) ordinal dominance criterion. In this paper, we develop a more complete, but less robust bounded index test,

André Decoster; Erwin Ooghe

2005-01-01

8

A BOUNDED INDEX TEST TO MAKE ROBUST HETEROGENEOUS WELFARE COMPARISONS  

Microsoft Academic Search

Fleurbaey et al. (2003) develop a bounded dominance test to make robust welfare comparisons, which is intermediate between Ebert's (1999) cardinal dominance criterion—generalized Lorenz dominance applied to household incomes, divided and weighted by an equivalence scale—and Bourguignon's (1989) ordinal dominance criterion. In this paper, we develop a more complete, but less robust bounded index test, which is intermediate between Ebert's (1997)

A ndré D ecoster; E rwin O oghe

2006-01-01

9

Robust tests of equivalence for k independent groups.  

PubMed

A common question of interest to researchers in psychology is the equivalence of two or more groups. Failure to reject the null hypothesis of traditional hypothesis tests such as the ANOVA F-test (i.e., H0 : ?1  = … = ?k ) does not imply the equivalence of the population means. Researchers interested in determining the equivalence of k independent groups should apply a one-way test of equivalence (e.g., Wellek, 2003). The goals of this study were to investigate the robustness of the one-way Wellek test of equivalence to violations of homogeneity of variance assumption, and compare the Type I error rates and power of the Wellek test with a heteroscedastic version which was based on the logic of the one-way Welch (1951) F-test. The results indicate that the proposed Wellek-Welch test was insensitive to violations of the homogeneity of variance assumption, whereas the original Wellek test was not appropriate when the population variances were not equal. PMID:23043500

Koh, Andy; Cribbie, Robert

2012-10-09

10

New extreme point results on robust strict positive realness  

Microsoft Academic Search

This paper considers the robust strict positive real (SPR) problem for a family of plants of the form G(s,q)=N(s,qn)D-1 (s,qd)-?, where N(s,qn) and D(s,qd) are multiaffine in uncertain parameters qn and qd, respectively, and ?>0. In the discrete-time setting, this problem plays an important role in digital quantization. Several results are presented. First, we prove that this plant family is

M. Fu; S. Dasgupta

1996-01-01

11

Interpreting Laboratory Test Results  

MedlinePLUS

... Clinical Trials NCI Publications Espańol Interpreting Laboratory Test Results A laboratory test is a medical procedure in which a sample of blood , urine , or other tissues or substances in the ...

12

Robust Tests against Weak Instruments for Limited Dependent Variable Models  

Microsoft Academic Search

This paper presents tests for the structural parameter of limited dependent variable models with endogenous explanatory variables that are robust against weak instruments. These tests are derived from the minimum distance objective function. The proposed method has two con- venient properties: it is easy to implement and it avoids unnecessary assumptions about the identiflcation of untested parameters. I compare the

Leandro Maschietto Magnusson

13

A robust testing procedure for the equality of covariance matrices  

Microsoft Academic Search

Abstract In classical statistics the likelihood ratio statistic used in testing hypotheses about covariance matri- ces does not have a closed form distribution, but asymptotically under strong normality assumptions is a function of the,,-distribution. This distributional approximation,totally fails if thenormality assumption is not completely met. In this paper we will present multivariate robust testing procedures for thescatte r matrix,using S-estimates.

Shagufta Aslam; David M. Rocke

2005-01-01

14

Climax Granite Test Results.  

National Technical Information Service (NTIS)

The Lawrence Livermore Laboratory (LLL), as part of the Nevada Nuclear Waste Storage Investigations (NNWSI) program, is carrying out in situ rock mechanics testing in the Climax granitic stock at the Nevada Test Site (NTS). This summary addresses only tho...

L. D. Ramspott

1980-01-01

15

Complexity and approximability results for robust knapsack problems  

Microsoft Academic Search

This paper studies robust knapsack problems, for which solutions are, up to a certain point, immune to data uncertainty. We complement the works found in the literature where uncertainty affects only the profits or only the weights of the items by studying the complexity and approximation of the general setting with uncertainty regarding both the profits and the weights, for

F. Talla Nobibon; R. Leus

2010-01-01

16

Complexity results and exact algorithms for robust knapsack problems  

Microsoft Academic Search

This paper studies the robust knapsack problem, for which solutions are, up to a certain point, immune to data uncertainty. We complement the works found in the literature where uncertainty affects only the profits or only the weights of the items by studying the complexity and approximation of the general setting with uncertainty regarding both the profits and the weights,

Fabrice Talla Nobibon; Roel Leus

2011-01-01

17

COLD TEST LOOP INTEGRATED TEST LOOP RESULTS  

SciTech Connect

A testing facility (Cold Test Loop) was constructed and operated to demonstrate the efficacy of the Accelerated Waste Retrieval (AWR) Project's planned sluicing approach to the remediation of Silos 1 and 2 at the Fernald Environmental Management Project near Cincinnati, Ohio. The two silos contain almost 10,000 tons of radium-bearing low-level waste, which consists primarily of solids of raffinates from processing performed on ores from the Democratic Republic of Congo (commonly referred to as ''Belgium Congo ores'') for the recovery of uranium. These silos are 80 ft in diameter, 36 ft high to the center of the dome, and 26.75 ft to the top of the vertical side walls. The test facility contained two test systems, each designed for a specific purpose. The first system, the Integrated Test Loop (ITL), a near-full-scale plant including the actual equipment to be installed at the Fernald Site, was designed to demonstrate the sluicing operation and confirm the selection of a slurry pump, the optimal sluicing nozzle operation, and the preliminary design material balance. The second system, the Component Test Loop (CTL), was designed to evaluate many of the key individual components of the waste retrieval system over an extended run. The major results of the initial testing performed during July and August 2002 confirmed that the AWR approach to sluicing was feasible. The ITL testing confirmed the following: (1) The selected slurry pump (Hazleton 3-20 type SHW) performed well and is suitable for AWR application. However, the pump's motor should be upgraded to a 200-hp model and be driven by a 150-hp variable-frequency drive (VFD). A 200-hp VFD is not much more expensive and would allow the pump to operate at full speed. (2) The best nozzle performance was achieved by using 15/16-in. nozzles operated alternately. This configuration appeared to most effectively mine the surrogate. (3) The Solartron densitometer, which was tested as an alternative mass flow measurement device, did not operate effectively. Consequently, it is not suitable for application to the AWR process. (4) Initially, the spray ring (operated at approximately 2300 psi) and the nozzles provided by the pump vendor did not perform acceptably. The nozzles were replaced with a more robust model, and the performance was then acceptable. (5) The average solids concentration achieved in the slurry before Bentogrout addition was approximately 16% by weight. The solids concentration of the slurry after Bentogrout addition ranged from 26% to approximately 40%. The slurry pump and ITL system performed well at every concentration. No line plugging or other problems were noted. The results of the CTL runs and later ITL testing are summarized in an appendix to this report.

Abraham, TJ

2003-10-22

18

LRAD radon test results.  

National Technical Information Service (NTIS)

Los Alamos National Laboratory (LANL) personnel recently tested Long-Range Alpha Detection (LRAD) technology for radon and radon daughter response in the calibration chamber at DOE Grand Junction Project Office (GJPO), Colorado. Radon concentrations range...

J. P. Johnson R. D. Bolton S. E. Garner K. L. Benham G. L. Langer

1994-01-01

19

Arundo Donax Test Results.  

National Technical Information Service (NTIS)

Arundo Donax was received from Greenwood Resources via Portland General Electric. PGE plans to transition a coal-fired boiler to 100% biomass by 2020, and has partnered with EPRI and INL to conduct the necessary testing and development to understand what ...

C. Nichol T. L. Westover

2012-01-01

20

Bootstrap tests for robust means of asymmetric distributions with unequal shapes  

Microsoft Academic Search

Bootstrap procedures for testing equality of robust means in the one-, two-, and multi-sample problems for asymmetrically distributed data with unequal shapes are described. The emphasis is on parametric procedures, but some results are provided for nonparametric procedures as well. In the parametric framework, it is assumed that a model with two parameters, shape and scale, can be used to

A. Marazzi

2002-01-01

21

Pressure locking test results  

SciTech Connect

The U.S. Nuclear Regulatory Commission (NRC), Office of Nuclear Regulatory Research, is funding the Idaho National Engineering Laboratory (INEL) in performing research to provide technical input for their use in evaluating responses to Generic Letter 95-07, {open_quotes}Pressure Locking and Thermal Binding of Safety-Related Power-Operated Gate Valves.{close_quotes} Pressure locking and thermal binding are phenomena that make a closed gate valve difficult to open. This paper discusses only the pressure locking phenomenon in a flexible-wedge gate valve; we will publish the results of our thermal binding research at a later date. Pressure locking can occur when operating sequences or temperature changes cause the pressure of the fluid in the bonnet (and, in most valves, between the discs) to be higher than the pressure on the upstream and downstream sides of the disc assembly. This high fluid pressure presses the discs against both seats, making the disc assembly harder to unseat than anticipated by the typical design calculations, which generally consider friction at only one of the two disc/seat interfaces. The high pressure of the bonnet fluid also changes the pressure distribution around the disc in a way that can further contribute to the unseating load. If the combined loads associated with pressure locking are very high, the actuator might not have the capacity to open the valve. The results of the NRC/INEL research discussed in this paper show that the relationship between bonnet pressure and pressure locking stem loads appears linear. The results also show that for this valve, seat leakage affects the bonnet pressurization rate when the valve is subjected to thermally induced pressure locking conditions.

DeWall, K.G.; Watkins, J.C.; McKellar, M.G.; Bramwell, D.

1996-06-01

22

WES, a robust expert system for well test analysis  

SciTech Connect

Well tests are generally performed to determine the hydrologic properties of aquifers, petroleum reservoirs and underground waste disposal sites. There are many types of well tests, however, for the purposes of this paper, we consider two of the most common: pressure draw-down tests (production of a well at a constant flow rate) and pressure build-up tests (shut-in of a well after a production period). For both of these tests, the pressure changes in the wellbore are monitored for the duration of the test. The resulting data set consists of pressure versus time values, along with the corresponding flow rate data. WES is an expert system developed for well test analysis which combines data processing and graphic representations with the expertise that can be provided by an expert system. The new possibilities offered by an expert system in the field of automatic well test analysis are discussed. 22 refs., 11 figs., 3 tabs.

Mensch, A.; Benson, S.M.

1989-09-01

23

Concentrating solar collector test results  

SciTech Connect

Some of the results obtained from three years of testing concentrating solar collectors at Sandia National Laboratories are summarized. Efficiency and thermal loss test data is shown for 16 collectors from 11 different manufacturers.

Dudley, V. E.; Workhoven, R. M.

1980-01-01

24

Set Point Identification and Robustness Testing of Electrostatic Separation Processes  

Microsoft Academic Search

Identification of the optimal operating conditions and evaluation of their robustness are critical issues for the industrial application of electrostatic separation techniques. In spite of extensive investigations performed in recent years, no standard procedure is available for guiding the research of the set point and for minimizing the process sensibility to changes in certain critical factors. The aim of this

Karim Medles; Amar Tilmatine; Farid Miloua; Abdelber Bendaoud; Mohamed Younes; Mostfa Rahli; Lucian Dascalescu

2007-01-01

25

Set point identification and robustness testing of electrostatic separation processes  

Microsoft Academic Search

Identification of the optimal operating conditions and evaluation of their robustness are critical issues for the industrial application of the electrostatic separation techniques. In spite of extensive investigations performed during recent years, no standard procedure is available for guiding the research of the set point and for minimizing the process sensibility to changes in certain critical factors. The aim of

Karim Medles; Amar Tilmatine; Farid Miloua; Abdelber Bendaoud; Mohamed Younes; Mostéfa Rahli; Lucian Dascalescu

2004-01-01

26

Central Composite Design with\\/without Artificial Neural Networks in Microemulsion Liquid Chromatography Separation Robustness Testing  

Microsoft Academic Search

In past few years, for overcoming some analytical problems in liquid chromatography, the microemulsion as eluent was employed. Due to the strict regulatory requirements, robustness testing became important especially when proposing completely new method such as microemulsion liquid chromatography (MELC). In this paper robustness testing of MELC method, proposed for carbamazepine and its impurities (iminostilben and iminodibenzyl) separation, was done

Biljana Jan; Andjelija Malenovi; Darko Ivanovi; Mirjana Medenica

27

Interpretation of grease test results  

SciTech Connect

Standard ASTM tests, their typical results and how those results may be interpreted by the practicing lubrication engineer or specialist in the field will be discussed. Some field experiences and examples will be given. In addition, examples of inventive non-standard field tests will be shown and described. Illustrations from the old and revised lubrication engineers handbook will be used.

Rush, R.E. [Uno-Ven Co., Arlington Heights, IL (United States)

1995-09-01

28

MITG test procedure and results  

SciTech Connect

Elements and modules for Radioisotope Thermoelectric Generator have been performance tested since the inception of the RTG program. These test articles seldom resembled flight hardware and often lacked adequate diagnostic instrumentation. Because of this, performance problems were not identified in the early stage of program development. The lack of test data in an unexpected area often hampered the development of a problem solution. A procedure for conducting the MITG Test was developed in an effort to obtain data in a systematic, unambiguous manner. This procedure required the development of extensive data acquisition software and test automation. The development of a facility to implement the test procedure, the facility hardware and software requirements, and the results of the MITG testing are the subject of this paper.

Eck, M.B.; Mukunda, M.

1983-01-01

29

Variability of aflatoxin test results  

Microsoft Academic Search

Using 12 lb samples, 280 g subsamples, the Waltking method of analysis, and densitometric procedures, the sampling, subsampling,\\u000a and analytical variances associated with aflatoxin test procedures were estimated. Regression analysis indicated that each\\u000a of the above variance components is a function of the concentration of aflatoxin in the population being tested. Results,\\u000a for the test procedures given above, showed that

T. B. Whitaker; J. W. Dickens; R. J. Monroe

1974-01-01

30

Testing Multicultural Robustness of the Child Behavior Checklist in a National Epidemiological Sample in Uruguay  

ERIC Educational Resources Information Center

|Comparisons of Child Behavior Checklist (CBCL) scores from 31 societies (Rescorla et al. "Journal of Emotional and Behavioral Disorders" 15:13-142 2007) supported the instrument's multicultural robustness, but none of these societies was in South America. The present study tested the multicultural robustness of the 2001 CBCL using data from a…

Viola, Laura; Garrido, Gabriela; Rescorla, Leslie

2011-01-01

31

Integrating Robust Technologies for Mixed-Signal System Level Test  

Microsoft Academic Search

An automated system-level test model approach is introduced, incorporating XML, while making use of interchangeable virtual instruments (IVI) and Automatic Test Markup Language (ATML) standards. Integrating basic block models into an automated test framework, targeting specifically mixed-signal ICs, the focus is on abstraction through integrating proven technologies in growing complexity levels. Initial research shows high potential for parallel development of

Andres Mellik

2006-01-01

32

Mobile evaporator corrosion test results  

SciTech Connect

Laboratory corrosion tests were conducted on eight candidates to select a durable and cost-effective alloy for use in mobile evaporators to process radioactive waste solutions. Based on an extensive literature survey of corrosion data, three stainless steel alloys (304L, 316L, AL-6XN), four nickel-based alloys (825, 625, 690, G-30), and titanium were selected for testing. The corrosion tests included vapor phase, liquid junction (interface), liquid immersion, and crevice corrosion tests on plain and welded samples of candidate materials. Tests were conducted at 80{degrees}C for 45 days in two different test solutions: a nitric acid solution. to simulate evaporator conditions during the processing of the cesium ion-exchange eluant and a highly alkaline sodium hydroxide solution to simulate the composition of Tank 241-AW-101 during evaporation. All of the alloys exhibited excellent corrosion resistance in the alkaline test solution. Corrosion rates were very low and localized corrosion was not observed. Results from the nitric acid tests showed that only 316L stainless steel did not meet our performance criteria. The 316L welded interface and crevice specimens had rates of 22.2 mpy and 21.8 mpy, respectively, which exceeds the maximum corrosion rate of 20 mpy. The other welded samples had about the same corrosion resistance as the plain samples. None of the welded samples showed preferential weld or heat-affected zone (HAZ) attack. Vapor corrosion was negligible for all alloys. All of the alloys except 316L exhibited either {open_quotes}satisfactory{close_quotes} (2-20 mpy) or {open_quotes}excellent{close_quotes} (<2 mpy) corrosion resistance as defined by National Association of Corrosion Engineers. However, many of the alloys experienced intergranular corrosion in the nitric acid test solution, which could indicate a susceptibility to stress corrosion cracking (SCC) in this environment.

Rozeveld, A.; Chamberlain, D.B.

1997-05-01

33

Testing the robustness of semi-empirical sea level projections  

NASA Astrophysics Data System (ADS)

We determine the parameters of the semi-empirical link between global temperature and global sea level in a wide variety of ways, using different equations, different data sets for temperature and sea level as well as different statistical techniques. We then compare projections of all these different model versions (over 30) for a moderate global warming scenario for the period 2000-2100. We find the projections are robust and are mostly within ±20% of that obtained with the method of Vermeer and Rahmstorf (Proc Natl Acad Sci USA 106:21527-21532, 2009), namely ~1 m for the given warming of 1.8°C. Lower projections are obtained only if the correction for reservoir storage is ignored and/or the sea level data set of Church and White (Surv Geophys, 2011) is used. However, the latter provides an estimate of the base temperature T 0 that conflicts with the constraints from three other data sets, in particular with proxy data showing stable sea level over the period 1400-1800. Our new best-estimate model, accounting also for groundwater pumping, is very close to the model of Vermeer and Rahmstorf (Proc Natl Acad Sci USA 106:21527-21532, 2009).

Rahmstorf, Stefan; Perrette, Mahé; Vermeer, Martin

2012-08-01

34

A robust model-based test planning procedure  

Microsoft Academic Search

A wide variety of model-based optimal test design methodologies have been developed in the past decade using deterministic approaches. This means that the test planning is based on a single-nominal model and an optimal design is obtained for precisely this model. Needless to say, the deterministic approach can lead to an ineffective distribution of sensors and poorly defined excitation points

P. Vinot; S. Cogan; V. Cipolla

2005-01-01

35

Fast and Robust Modulation Classification via Kolmogorov-Smirnov Test  

Microsoft Academic Search

A new approach to modulation classification based on the Kolmogorov-Smirnov (K-S) test is proposed. The K-S test is a non-parametric method to measure the goodness of fit. The basic procedure involves computing the empirical cumulative distribution function (ECDF) of some decision statistic derived from the received signal, and comparing it with the CDFs or the ECDFs of the signal under

Fanggang Wang; Xiaodong Wang

2010-01-01

36

Are Nested Networks More Robust to Disturbance? A Test Using Epiphyte-Tree, Comensalistic Networks  

Microsoft Academic Search

Recent research on ecological networks suggests that mutualistic networks are more nested than antagonistic ones and, as a result, they are more robust against chains of extinctions caused by disturbances. We evaluate whether mutualistic networks are more nested than comensalistic and antagonistic networks, and whether highly nested, host-epiphyte comensalistic networks fit the prediction of high robustness against disturbance. A review

Martín Piazzon; Asier R. Larrinaga; Luis Santamaría; Tamara Natasha Romanuk

2011-01-01

37

Non-robust tests for stuck-fault detection using signal waveform analysis: feasibility and advantages  

Microsoft Academic Search

In this paper we propose to use an output signal waveform analysis method called signal waveform integration for detection of stuck-at failures in combinational circuits. Non-robust tests are applied at-speed or faster to achieve high fault coverage, low test application time and detectability of redundant faults using directed random test generation techniques

Abhijit Chatterjee; Rathish Jayabharathi; Pankaj Pant; Jacob A. Abraham

1996-01-01

38

SuperORRUBA Test Results  

NASA Astrophysics Data System (ADS)

Transfer reactions in inverse kinematics with radioactive ion beams are needed to provide nuclear structure information far from stability to aid in the development of nuclear models and in the understanding of astrophysical processes. Highly granular, low threshold detector arrays are needed to perform such experiments. The SuperORRUBA (Oak Ridge Rutgers University Barrel Array) was created to measure lower threshold reactions with better energy resolution than the original ORRUBA detectors. The new array consists of 18 silicon detectors, each with a 64 non-resistive strip front side and a 4 non-resistive strip back side. To collect the data from these 1224 channels, the ASICs (Application-Specific Integrated Circuits) are used for timing, triggering, shaping, and digitizing the signals, with each chip handling 32 channels. Utilizing the ASICs system and a triple-alpha source, SuperORRUBA detectors were tested to ensure proper function. In addition, all preamps and ASICs elements were tested. The depletion voltage of each detector was found, and the detectors were tested for any shift in gain over time. Finally, issues with crosstalk causing poor resolution on particular channels were investigated. A detailed description of the system and the test results will be presented.

Burkhart, A. J.; Ahn, S.; Bardayan, D. W.; Kozub, R. L.; Pain, S. D.

2012-10-01

39

New results for global robust stability of bidirectional associative memory neural networks with multiple time delays  

Microsoft Academic Search

This paper presents some new sufficient conditions for the global robust asymptotic stability of the equilibrium point for bidirectional associative memory (BAM) neural networks with multiple time delays. The results we obtain impose constraint conditions on the network parameters of neural system independently of the delay parameter, and they are applicable to all bounded continuous non-monotonic neuron activation functions. We

Sibel Senan; Sabri Arik

2009-01-01

40

Testing Multicultural Robustness of the Child Behavior Checklist in a National Epidemiological Sample in Uruguay  

Microsoft Academic Search

Comparisons of Child Behavior Checklist (CBCL) scores from 31 societies (Rescorla et al. Journal of Emotional and Behavioral\\u000a Disorders 15:13–142 2007) supported the instrument’s multicultural robustness, but none of these societies was in South America. The present study\\u000a tested the multicultural robustness of the 2001 CBCL using data from a national epidemiological survey in Uruguay. Participants\\u000a were 1,374 6- to

Laura Viola; Gabriela Garrido; Leslie Rescorla

2011-01-01

41

RSG Deployment Case Testing Results  

SciTech Connect

The RSG deployment case design is centered on taking the RSG system and producing a transport case that houses the RSG in a safe and controlled manner for transport. The transport case was driven by two conflicting constraints, first that the case be as light as possible, and second that it meet a stringent list of Military Specified requirements. The design team worked to extract every bit of weight from the design while striving to meet the rigorous Mil-Spec constraints. In the end compromises were made primarily on the specification side to control the overall weight of the transport case. This report outlines the case testing results.

Owsley, Stanley L.; Dodson, Michael G.; Hatchell, Brian K.; Seim, Thomas A.; Alexander, David L.; Hawthorne, Woodrow T.

2005-09-01

42

SOFIS FTS EM test results  

NASA Astrophysics Data System (ADS)

The Solar Occultation FTS for Inclined-orbit Satellite (SOFIS) is a solar occultation Fourier transform spectrometer developed by the Ministry of the Environment (MOE) in Japan for the Global Change Observation Mission-A1 (GCOM-A1) satellite. GCOM-A1 will be placed in a 650 km non-sun-synchronous orbit, with an inclination angle of 69 degrees. ABB-Bomem is a sub-contractor of NTSpace (NEC-Toshiba Space) for the design and manufacturing of the FTS Engineering Model of SOFIS. SOFIS measures the vertical profile of the atmospheric constituents with 0.2 cm-1 spectral resolution for the spectral range covering 3-13 ?m. The atmospheric vertical resolution of SOFIS is 1 km. The target of SOFIS measurements is a global distribution of O3, HNO3, NO2, N2O, CH4, H2O, CO2, CFC-11, CFC-12, ClONO2, aerosol extinction, atmospheric pressure and temperature. NTSpace in Japan is the prime contractor of SOFIS. The spectrometer is an adapted version of the classical Michelson interferometer using an optimized optical layout and moving retro-reflectors. A solid-state laser diode operating at 1550 nm is used as metrology source of the interferometer. Its highly folded optical design results in a high performance instrument with a compact size. SOFIS FTS implements high performance control techniques to achieve outstanding speed stability of the moving mechanism. This paper describes the test activities of the SOFIS-FTS Engineering Model (EM) and preliminary results. The performances of the FTS are presented in terms of key parameters like signal-to-noise ratio, modulation efficiency and stability. Spectra acquired are shown and test methodology and analyses are presented. Lessons learned during assembly, integration and testing are described as well as improvements planned to be implemented in the Flight Model.

Soucy, Marc-Andre A.; Levesque, Luc E.; Tanii, Jun; Kawashima, Takahiro; Nakajima, Hideaki

2003-04-01

43

A Robust Model for Estimating and Testing for Means in Single Subject Experiments  

Microsoft Academic Search

The first order autoregressive model is proposed as a robust model for estimating and testing for means in single subject experiments. It has the advantage of mathematical simplicity, and it provides good approximations to a number of other models of the type typically encountered in behavioral research. Practical considerations on the use of the model are considered including: tests of

James J. Higgins

1978-01-01

44

Dissociated methanol vehicle test results  

SciTech Connect

This paper presents the results of chassis dynamometer testing of a 1980 Chevrolet Citation modified to run on dissociated methanol. Data are presented on the composition of the dissociated methanol gas during steady-state operation, vehicle fuel consumption during steady-state and transient operation, and exhaust emissions during transient operation. During low speed, low load operation there are significant amounts of unconverted methanol and side products to the desired dissociation reaction. Despite this, fuel economy improvements over baseline gasoline operation are high. Fuel economies of 13.3 km/L (31.3 mpg) and 11.4 km/L (26.8 mpg) were obtained at steady speed road load conditions of 65 km/h and 90 km/h respectively. Methanol fuel economy over the EPA '74 CVS hot start city driving cycle was 7.74 km/L (18.2 mpg). Methanol fuel economy over the EPA highway fuel economy test was 10.2 km/L (24.0 mpg).

Finegold, J.G.

1984-05-01

45

Non-robust Test Generation for Crosstalk-Induced Delay Faults  

Microsoft Academic Search

Crosstalk issues in deep sub-micron (DSM) cause severe design validation and test problems. This paper addresses the problems of delay test considering crosstalkinduced effects, and proposes a non-robust delay test generation method based on single precise crosstalkinduced path delay fault (S-PCPDF) model. With some necessary static timing analysis, the target crosstalkinduced delay fault set was reduced. And the delay test

Pei-fu Shen; Hua-Wei Li; Yong-Jun Xu; Xiao-Wei Li

2005-01-01

46

Biological dosimetry intercomparison exercise: an evaluation of triage and routine mode results by robust methods.  

PubMed

Well-defined protocols and quality management standards are indispensable for biological dosimetry laboratories. Participation in periodic proficiency testing by interlaboratory comparisons is also required. This harmonization is essential if a cooperative network is used to respond to a mass casualty event. Here we present an international intercomparison based on dicentric chromosome analysis for dose assessment performed in the framework of the IAEA Regional Latin American RLA/9/054 Project. The exercise involved 14 laboratories, 8 from Latin America and 6 from Europe. The performance of each laboratory and the reproducibility of the exercise were evaluated using robust methods described in ISO standards. The study was based on the analysis of slides from samples irradiated with 0.75 (DI) and 2.5 Gy (DII). Laboratories were required to score the frequency of dicentrics and convert them to estimated doses, using their own dose-effect curves, after the analysis of 50 or 100 cells (triage mode) and after conventional scoring of 500 cells or 100 dicentrics. In the conntional scoring, at both doses, all reported frequencies were considered as satisfactory, and two reported doses were considered as questionable. The analysis of the data dispersion among the dicentric frequencies and among doses indicated a better reproducibility for estimated doses (15.6% for DI and 8.8% for DII) than for frequencies (24.4% for DI and 11.4% for DII), expressed by the coefficient of variation. In the two triage modes, although robust analysis classified some reported frequencies or doses as unsatisfactory or questionable, all estimated doses were in agreement with the accepted error of ±0.5 Gy. However, at the DI dose and for 50 scored cells, 5 out of the 14 reported confidence intervals that included zero dose and could be interpreted as false negatives. This improved with 100 cells, where only one confidence interval included zero dose. At the DII dose, all estimations fell within ±0.5 Gy of the reference dose interval. The results obtained in this triage exercise indicated that it is better to report doses than frequencies. Overall, in both triage and conventional scoring modes, the laboratory performances were satisfactory for mutual cooperation purposes. These data reinforce the view that collaborative networking in the case of a mass casualty event can be successful. PMID:21306200

Di Giorgio, M; Barquinero, J F; Vallerga, M B; Radl, A; Taja, M R; Seoane, A; De Luca, J; Oliveira, M Stuck; Valdivia, P; Lima, O García; Lamadrid, A; Mesa, J González; Aguilera, I Romero; Cardoso, T Mandina; Carvajal, Y C Guerrero; Maldonado, C Arceo; Espinoza, M E; Martínez-López, W; Méndez-Acuńa, L; Di Tomaso, M V; Roy, L; Lindholm, C; Romm, H; Güçlü, I; Lloyd, D C

2011-02-09

47

Heliport Surface Maneuvering Test Results.  

National Technical Information Service (NTIS)

During late fall 1987 and early spring 1988 flight tests were conducted at the Federal Aviation Administration (FAA) Technical Center's National Concepts Development and Demonstration Heliport. The purpose of these tests was to measure pilot perception of...

C. J. Wolf J. G. Morrow R. M. Weiss S. L. Erlichman

1989-01-01

48

Results of PRIM gyroscope testing  

SciTech Connect

The tests were designed so that motions of the gyroscope and the Partially Restrained Internal Member (PRIM) could be measured at different conditions of spin and PRIM clearance gaps. Two types of PRIM drive were tested. A round shaft configuration was used to test theory. An octagon drive was used to simulate the XM785 design.

Cornell, R.

1985-03-01

49

Test Results for CSTR Test 4  

SciTech Connect

One of the 3 technologies currently being developed for the Savannah River Salt Waste Processing Program is the Small-Tank Tetraphenylborate Process (STTP). This process uses sodium tetraphenylborate to precipitate and remove radioactive Cs from the waste and monosodium titanate to sorb and remove radioactive Sr and actinides. ORNL is demonstrating this process at the 1:4000 scale using a 20-liter continuous-flow stirred tank reactor (CSTR) system. The primary goal of Test 4 was to verify that the STTP process could achieve and maintain the necessary Cs decontamination while TPB was actively decomposing. Even with TPB being decomposed by the off-normal conditions of this test, the decontaimination factor for {sup 137}Cs obtained for the filtrate from the Slurry Concentrating Tank ranged from 47,000 to 646,000, exceeding the WAC standard.

Lee, D.D.

2001-05-31

50

Are nested networks more robust to disturbance? A test using epiphyte-tree, comensalistic networks.  

PubMed

Recent research on ecological networks suggests that mutualistic networks are more nested than antagonistic ones and, as a result, they are more robust against chains of extinctions caused by disturbances. We evaluate whether mutualistic networks are more nested than comensalistic and antagonistic networks, and whether highly nested, host-epiphyte comensalistic networks fit the prediction of high robustness against disturbance. A review of 59 networks including mutualistic, antagonistic and comensalistic relationships showed that comensalistic networks are significantly more nested than antagonistic and mutualistic networks, which did not differ between themselves. Epiphyte-host networks from old-growth forests differed from those from disturbed forest in several topological parameters based on both qualitative and quantitative matrices. Network robustness increased with network size, but the slope of this relationship varied with nestedness and connectance. Our results indicate that interaction networks show complex responses to disturbances, which influence their topology and indirectly affect their robustness against species extinctions. PMID:21589931

Piazzon, Martín; Larrinaga, Asier R; Santamaría, Luis

2011-05-11

51

Are Nested Networks More Robust to Disturbance? A Test Using Epiphyte-Tree, Comensalistic Networks  

PubMed Central

Recent research on ecological networks suggests that mutualistic networks are more nested than antagonistic ones and, as a result, they are more robust against chains of extinctions caused by disturbances. We evaluate whether mutualistic networks are more nested than comensalistic and antagonistic networks, and whether highly nested, host-epiphyte comensalistic networks fit the prediction of high robustness against disturbance. A review of 59 networks including mutualistic, antagonistic and comensalistic relationships showed that comensalistic networks are significantly more nested than antagonistic and mutualistic networks, which did not differ between themselves. Epiphyte-host networks from old-growth forests differed from those from disturbed forest in several topological parameters based on both qualitative and quantitative matrices. Network robustness increased with network size, but the slope of this relationship varied with nestedness and connectance. Our results indicate that interaction networks show complex responses to disturbances, which influence their topology and indirectly affect their robustness against species extinctions.

Piazzon, Martin; Larrinaga, Asier R.; Santamaria, Luis

2011-01-01

52

Mobile evaporator corrosion test results  

Microsoft Academic Search

Laboratory corrosion tests were conducted on eight candidates to select a durable and cost-effective alloy for use in mobile evaporators to process radioactive waste solutions. Based on an extensive literature survey of corrosion data, three stainless steel alloys (304L, 316L, AL-6XN), four nickel-based alloys (825, 625, 690, G-30), and titanium were selected for testing. The corrosion tests included vapor phase,

A. Rozeveld; D. B. Chamberlain

1997-01-01

53

Changes in poverty in rural Ethiopia 1989-1995: measurement, robustness tests and decomposition  

Microsoft Academic Search

Assessing changes in poverty levels over time is bedevilled by problems in questionnaire design, the choice of the poverty line, the exact timing of the survey and uncertainty about the appropriate cost-of-living deflators. In this paper, we focus on testing the robustness of measured changes in poverty to these common problems, using household panel data collected in rural Ethiopia in

Stefan Dercon; Pramila Krishnan

1998-01-01

54

A robust test for growth hormone doping – present status and future prospects  

Microsoft Academic Search

Although doping with growth hormone (GH) is banned, there is anecdotal evidence that it is widely abused. GH is reportedly used often in combination with anabolic steroids at high doses for several months. Development of a robust test for GH has been challenging because recombinant human 22 kDa (22K) GH used in doping is indistinguishable analytically from endogenous GH and

Anne E. Nelson; Ken K. Ho

2008-01-01

55

Chemical compatibility screening test results  

SciTech Connect

A program for evaluating packaging components that may be used in transporting mixed-waste forms has been developed and the first phase has been completed. This effort involved the screening of ten plastic materials in four simulant mixed-waste types. These plastics were butadiene-acrylonitrile copolymer rubber, cross-linked polyethylene (XLPE), epichlorohydrin rubber, ethylene-propylene rubber (EPDM), fluorocarbon (Viton or Kel-F), polytetrafluoroethylene, high-density polyethylene (HDPE), isobutylene-isoprene copolymer rubber (butyl), polypropylene, and styrene-butadiene rubber (SBR). The selected simulant mixed wastes were (1) an aqueous alkaline mixture of sodium nitrate and sodium nitrite; (2) a chlorinated hydrocarbon mixture; (3) a simulant liquid scintillation fluid; and (4) a mixture of ketones. The testing protocol involved exposing the respective materials to 286,000 rads of gamma radiation followed by 14-day exposures to the waste types at 60{degrees}C. The seal materials were tested using vapor transport rate (VTR) measurements while the liner materials were tested using specific gravity as a metric. For these tests, a screening criterion of 0.9 g/hr/m{sup 2} for VTR and a specific gravity change of 10% was used. Based on this work, it was concluded that while all seal materials passed exposure to the aqueous simulant mixed waste, EPDM and SBR had the lowest VTRs. In the chlorinated hydrocarbon simulant mixed waste, only Viton passed the screening tests. In both the simulant scintillation fluid mixed waste and the ketone mixture simulant mixed waste, none of the seal materials met the screening criteria. For specific gravity testing of liner materials, the data showed that while all materials with the exception of polypropylene passed the screening criteria, Kel-F, HDPE, and XLPE offered the greatest resistance to the combination of radiation and chemicals.

Nigrey, P.J.; Dickens, T.G.

1997-12-01

56

Results of Weathervane Test Series.  

National Technical Information Service (NTIS)

During June of 1973 four ionospheric barium releases were made at the Kwajalein Missile Range (KMR). This test series, code-name Weathervane, is part of a larger research program code-named HAPREX (High-Altitude Propagation Experiment) that is investigati...

D. R. McDaniel

1973-01-01

57

Some Results on the Analysis of Stochastic Processes with Uncertain Transition Probabilities and Robust Optimal Control  

SciTech Connect

This paper investigates stochastic processes that are modeled by a finite number of states but whose transition probabilities are uncertain and possibly time-varying. The treatment of uncertain transition probabilities is important because there appears to be a disconnection between the practice and theory of stochastic processes due to the difficulty of assigning exact probabilities to real-world events. Also, when the finite-state process comes as a reduced model of one that is more complicated in nature (possibly in a continuous state space), existing results do not facilitate rigorous analysis. Two approaches are introduced here. The first focuses on processes with one terminal state and the properties that affect their convergence rates. When a process is on a complicated graph, the bound of the convergence rate is not trivially related to that of the probabilities of individual transitions. Discovering the connection between the two led us to define two concepts which we call 'progressivity' and 'sortedness', and to a new comparison theorem for stochastic processes. An optimality criterion for robust optimal control also derives from this comparison theorem. In addition, this result is applied to the case of mission-oriented autonomous robot control to produce performance estimate within a control framework that we propose. The second approach is in the MDP frame work. We will introduce our preliminary work on optimistic robust optimization, which aims at finding solutions that guarantee the upper bounds of the accumulative discounted cost with prescribed probabilities. The motivation here is to address the issue that the standard robust optimal solution tends to be overly conservative.

Keyong Li; Seong-Cheol Kang; I. Ch. Paschalidis

2007-09-01

58

Robust non-parametric one-sample tests for the analysis of recurrent events.  

PubMed

One-sample non-parametric tests are proposed here for inference on recurring events. The focus is on the marginal mean function of events and the basis for inference is the standardized distance between the observed and the expected number of events under a specified reference rate. Different weights are considered in order to account for various types of alternative hypotheses on the mean function of the recurrent events process. A robust version and a stratified version of the test are also proposed. The performance of these tests was investigated through simulation studies under various underlying event generation processes, such as homogeneous and nonhomogeneous Poisson processes, autoregressive and renewal processes, with and without frailty effects. The robust versions of the test have been shown to be suitable in a wide variety of event generating processes. The motivating context is a study on gene therapy in a very rare immunodeficiency in children, where a major end-point is the recurrence of severe infections. Robust non-parametric one-sample tests for recurrent events can be useful to assess efficacy and especially safety in non-randomized studies or in epidemiological studies for comparison with a standard population. PMID:21170908

Rebora, Paola; Galimberti, Stefania; Valsecchi, Maria Grazia

2010-12-30

59

Massive-Scale Gene Co-Expression Network Construction and Robustness Testing Using Random Matrix Theory  

PubMed Central

The study of gene relationships and their effect on biological function and phenotype is a focal point in systems biology. Gene co-expression networks built using microarray expression profiles are one technique for discovering and interpreting gene relationships. A knowledge-independent thresholding technique, such as Random Matrix Theory (RMT), is useful for identifying meaningful relationships. Highly connected genes in the thresholded network are then grouped into modules that provide insight into their collective functionality. While it has been shown that co-expression networks are biologically relevant, it has not been determined to what extent any given network is functionally robust given perturbations in the input sample set. For such a test, hundreds of networks are needed and hence a tool to rapidly construct these networks. To examine functional robustness of networks with varying input, we enhanced an existing RMT implementation for improved scalability and tested functional robustness of human (Homo sapiens), rice (Oryza sativa) and budding yeast (Saccharomyces cerevisiae). We demonstrate dramatic decrease in network construction time and computational requirements and show that despite some variation in global properties between networks, functional similarity remains high. Moreover, the biological function captured by co-expression networks thresholded by RMT is highly robust.

Isaacson, Sven; Luo, Feng; Feltus, Frank A.; Smith, Melissa C.

2013-01-01

60

Using continuous integration and automated test techniques for a robust C4ISR system  

Microsoft Academic Search

We have used CI (continuous integration) and various software testing techniques to achieve a robust C4ISR (command, control, communications, computers, intelligence, surveillance, and reconnaissance) multi-platform system. Because of rapid changes in the C4ISR domain and in the software technology, frequent critical design adjustments and in turn vast code modifications or additions become inevitable. Defect fixes might also incur code changes.

H. Mehmet Yüksel; Eray Tüzün; Erdogan Gelirli; Emrah Biyikli; Buyurman Baykal

2009-01-01

61

On-line robust aeroservoelastic stability margin analysis from wavelet-processed flight testing data  

Microsoft Academic Search

An on-line method based on robust mu analysis is presented to evaluate the stability margin of multi-loop aeroservoelastic system from flight testing data. The flight data is preprocessed to remove noise by wavelet filter in time-frequency domain. The method for stability analysis is described and the classical stability margin used for single-input-single-output (SISO) system has been extended to multi-loop system.

Hongchao Li; Zhongke Shi; Wei Tang

2006-01-01

62

Set-Point Identification and Robustness Testing of a Free-Fall Triboelectrostatic Separation Process  

Microsoft Academic Search

Identification of the optimal operating conditions and evaluation of their sensibility to changes in certain critical factors are critical issues for the industrial application of electrostatic separation techniques. The authors have already elaborated a procedure for set-point identification and robustness testing of a roll-type corona-electrostatic separation process. The aim of this paper is to validate a similar procedure for optimizing

A. Tilmatine; S. Bendimerad; K. Medles; A. Bendaoud; M. Younes; L. Dascalescu

2008-01-01

63

A robust test for growth hormone doping--present status and future prospects.  

PubMed

Although doping with growth hormone (GH) is banned, there is anecdotal evidence that it is widely abused. GH is reportedly used often in combination with anabolic steroids at high doses for several months. Development of a robust test for GH has been challenging because recombinant human 22 kDa (22K) GH used in doping is indistinguishable analytically from endogenous GH and there are wide physiological fluctuations in circulating GH concentrations. One approach to GH testing is based on measurement of different circulating GH isoforms using immunoassays that differentiate between 22K and other GH isoforms. Administration of 22K GH results in a change in its abundance relative to other endogenous pituitary GH isoforms. The differential isoform method has been implemented; however, its utility is limited because of the short window of opportunity of detection. The second approach, which will extend the window of opportunity of detection, is based on the detection of increased levels of circulating GH-responsive proteins, such as insulin-like growth factor (IGF) axis and collagen peptides. Age and gender are the major determinants of variability for IGF-I and the collagen markers; therefore, a test based on these markers must take age into account for men and women. Extensive data is now available that validates the GH-responsive marker approach and implementation is now largely dependent on establishing an assured supply of standardized assays. Future directions will include more widespread implementation of both approaches by the World Anti-Doping Agency, possible use of other platforms for measurement and an athlete's passport to establish individual reference levels for biological parameters such as GH-responsive markers. Novel approaches include gene expression and proteomic profiling. PMID:18385903

Nelson, Anne E; Ho, Ken K

2008-05-01

64

Design and field test of a robust acoustic disdrometer for distributed rainfall observations  

NASA Astrophysics Data System (ADS)

With a special focus on robust design, telemetric solutions and decreasing cost, an acoustic disdrometer has been developed that opens up the possibility to use networks of disdrometers for distributed rainfall observations at reasonable budgets. The disdrometer works on the principle of translating the impact energy of drops into drop sizes and thus is able to measure both drop size distributions and bulk rainfall variables such as rain rates and radar reflectivity factors. The disdrometer was evaluated at the test site of the Royal Netherlands Meteorological Institute (KNMI) where its measurements were compared to other commercially available disdrometers as well as a calibrated electrical rain gauge

Hut, Rolf; de Jong, Stijn; van de Giesen, Nick; Leijnse, Hidde; de Haij, Marijn

2013-04-01

65

Robust reference intervals for Liver function test (LFT) analytes in newborns and infants  

PubMed Central

Background Reference intervals (RIs) are ranges of upper and lower limits of a given analyte which are used for a laboratory test to determine whether a disease is present or absent or to know if the patient is at risk for future disease states. In Ethiopia, a country with highly diversified population groups and geographical sites, there are no established RIs to metabolic analytes including the liver function test (LFT) analytes for the pediatric population though it has been known that liver function assessment in this population is vital as a result of varied vulnerability to both endogenous and xenobiotic substances. Methods A cross sectional study was conducted in Tikur Anbessa Specialized Hospital (TASH) and Teklehaymanot Health Center (THC) from November 2010 to April 2011. 117 cord blood (from newborns) and venous blood samples (from infants) were collected and analyzed using HumaStar 300. All pre-analytical, analytical and post-analytical aspects were thoroughly controlled. A robust, CLSI/ IFCC recommended, method was used for the determination of upper and lower end points covering 95% of the reference values of each analyte with respective 90% CIs using MedCalc® software. Results Combined RIs for newborns and infants were established for albumin, AST, ALP, direct bilirubin and total bilirubin to be 3.88-5.82 g/dl, 16.1-55.4U/l, 130-831U/l, <0.41 mg/dl and <1.37 mg/dl respectively. But, separated RIs were indicated for ALT and GGT as 1.2-23.1U/l and 6.94-24.8U/l ALT; and 30.6-160.7U/L and 10–28.2U/l GGT for newborns and infants respectively. Some maternal and infantile factors were identified to affect the values of analytes. Conclusion Almost all analytes were different from previously reported values for other target population of similar age group, kit insert values and adult values. So, interpretation of values of these analytes in newborns and infants of Ethiopian population sounds better to be performed by using such RIs taking the effect of some maternal and infantile factors in to account.

2012-01-01

66

Investigation of the diffusion measurement using PFG and test of robustness against experimental conditions and parameters  

NASA Astrophysics Data System (ADS)

The DOSY experiment, based on pulsed-field gradient (PFG) NMR, is used to analyse the diffusion coefficients of species in mixture. We present here an evaluation of this method. Various experimental tests demonstrates that this method is robust against experimental parameters like relaxation delay, gradients duration or pulse flip angle. Concerning the diffusion delay, it has to be kept as short as possible because convection can appear during this delay. We show that the rotation of the sample permits to minimize convection effect. Moreover, we propose various gradient sampling strategies and show that they are equivalent for a model case. L'expérience RMN DOSY, basée sur les gradients de champs pulsés, est utilisée pour l'analyse des coefficients de diffusion d'espčces en mélange. Nous présentons ici une évaluation de cette méthode. Plusieurs tests expérimentaux démontrent que cette méthode est robuste envers les paramčtres expérimentaux tels que le délai de relaxation, la durée des gradients ou l'angle des impulsions. En ce qui concerne le délai de diffusion, il doit ętre le plus court possible car durant ce délai de la convection peut apparaître. Nous montrons que la rotation de l'échantillon permet de minimiser l'effet de cette convection. D'autre part, nous proposons plusieurs stratégies d'échantillonnage de l'intensité des gradients et montrons que, dans un cas modčle, elles sont équivalentes.

Augé, S.; Amblard-Blondel, B.; Delsuc, M.-A.

1999-10-01

67

Testing the robustness of the anthropogenic climate change detection statements using different empirical models  

NASA Astrophysics Data System (ADS)

This paper aims to test the robustness of the detection and attribution of anthropogenic climate change using four different empirical models that were previously developed to explain the observed global mean temperature changes over the last few decades. These studies postulated that the main drivers of these changes included not only the usual natural forcings, such as solar and volcanic, and anthropogenic forcings, such as greenhouse gases and sulfates, but also other known Earth system oscillations such as El Nińo Southern Oscillation (ENSO) or the Atlantic Multidecadal Oscillation (AMO). In this paper, we consider these signals, or forced responses, and test whether or not the anthropogenic signal can be robustly detected under different assumptions for the internal variability of the climate system. We assume that the internal variability of the global mean surface temperature can be described by simple stochastic models that explore a wide range of plausible temporal autocorrelations, ranging from short memory processes exemplified by an AR(1) model to long memory processes, represented by a fractional differenced model. In all instances, we conclude that human-induced changes to atmospheric gas composition is affecting global mean surface temperature changes.

Imbers, J.; Lopez, A.; Huntingford, C.; Allen, M. R.

2013-04-01

68

Evaluation of Hydraulic Test Model (HTM) flow distribution test results  

Microsoft Academic Search

The CRBR steam generator Hydraulic Test Model (HTM) flow distribution test results were evaluated, and it is found that the performance degradation due to the flow nonuniformity observed in the HTM test is negligible; 0.06% for the evaporator and nil for the superheater. Also, the fact that ambient temperature water was used in the test instead of hot sodium with

Y. J. Lee

1977-01-01

69

PHASE I SINGLE CELL ELECTROLYZER TEST RESULTS  

Microsoft Academic Search

This document reports the results of Phase I Single Cell testing of an SO-Depolarized Water Electrolyzer. Testing was performed primarily during the first quarter of FY 2008 at the Savannah River National Laboratory (SRNL) using an electrolyzer cell designed and built at SRNL. Other facility hardware were also designed and built at SRNL. This test further advances this technology for

J Steimke; T Timothy Steeper

2008-01-01

70

The Robustness of Generalized Estimating Equations for Association Tests in Extended Family Data  

PubMed Central

Variance-component analysis (VCA), the traditional method for handling correlations within families in genetic association studies, is computationally intensive for genome-wide analyses, and the computational burden of VCA, a likelihood-based test, increases with family size and the number of genetic markers. Alternative approaches that do not require the computation of familial correlations is preferable, provided that they do not inflate type I error or decrease power. We performed a simulation study to evaluate practical alternatives to VCA that use regression with generalized estimating equations (GEE) in extended family data. We compared the properties of linear regression with GEE applied to an entire extended family structure (GEE-EXT) and GEE applied to nuclear family structures split from these extended families (GEE-SPL) to variance-components likelihood-based methods (FastAssoc). GEE-EXT was evaluated with and without robust variance estimators to estimate the standard errors. We observed similar average type I error rates from GEE-EXT and FastAssoc compared to GEE-SPL. Type I error rates for the GEE-EXT method with a robust variance estimator were marginally higher than the nominal rate when the MAF was < 0.1, but were close to nominal rate when MAF ? 0.2. All methods gave consistent effect estimates and had similar power. In summary, the GEE framework with the robust variance estimator, the computationally fastest and least data management intensive, appears to work well in extended families and thus provides a reasonable alternative to full variance components approaches for extended pedigrees in the GWAS setting.

Suktitipat, Bhoom; Mathias, Rasika A.; Vaidya, Dhananjay; Yanek, Lisa R.; Young, J. Hunter; Becker, Lewis C.; Becker, Diane M.; Wilson, Alexander F.; Fallin, M. Daniele

2013-01-01

71

Robust fault detection using eigenstructure assignment: a tutorial consideration and some new results  

Microsoft Academic Search

Developments in the eigenstructure assignment approach to robust fault detection are discussed. By suitable assignment of the eigenstructure of an observer, the residual signal is decoupled from disturbances. The main contribution of this work is the novel use of right eigenvector assignment of observers, which gives more freedom for achieving disturbance decoupling. It is shown that, when decoupling conditions are

R. J. Patton; J. Chen

1991-01-01

72

Salmonella mutagenicity test results for 250 chemicals  

Microsoft Academic Search

This publication is a presentation of Salmonella testing results on 250 coded chemicals, encompassing 370 tests. The majority of these results were previously summarized in issues of the National Toxicology Program Technical Bulletin. However, some interpretations were changed since publication in the NTP Bulletin, based upon a reevaluation of the data. The presentation here is designed both to summarize the

Steve Haworth; Timothy Lawlor; Kristien Mortelmans; William Speck; Errol Zeiger

1983-01-01

73

Review of Fenton Hill HDR test results  

SciTech Connect

Results of recent flow testing at Fenton Hill, New Mexico, have been examined in light of their applicability to the development of commercial-scale hot dry rock (HDR) reservoirs at other sites. These test results, obtained during the cumulative 11 months of reservoir flow testing between 1992 and 1995, show that there was no significant production temperature drawdown during this time and that the reservoir flow became more dispersed as flow testing proceeded. Based on these test results together with previous HDR research at Fenton Hill and elsewhere, it is concluded that a three-well geometry, with one centrally located injection well and two production wells-one at each end of the pressure-stimulated reservoir region-would provide a much more productive system for future HDR development than the two-well system tested at Fenton Hill.

Brown, D.

1997-01-01

74

Superconducting solenoid model magnet test results  

SciTech Connect

Superconducting solenoid magnets suitable for the room temperature front end of the Fermilab High Intensity Neutrino Source (formerly known as Proton Driver), an 8 GeV superconducting H- linac, have been designed and fabricated at Fermilab, and tested in the Fermilab Magnet Test Facility. We report here results of studies on the first model magnets in this program, including the mechanical properties during fabrication and testing in liquid helium at 4.2 K, quench performance, and magnetic field measurements. We also describe new test facility systems and instrumentation that have been developed to accomplish these tests.

Carcagno, R.; Dimarco, J.; Feher, S.; Ginsburg, C.M.; Hess, C.; Kashikhin, V.V.; Orris, D.F.; Pischalnikov, Y.; Sylvester, C.; Tartaglia, M.A.; Terechkine, I.; /Fermilab

2006-08-01

75

Alternative filtration testing program: Pre-evaluation of test results  

SciTech Connect

Based on results of testing eight solids removal technologies and one pretreatment option, it is recommended that a centrifugal ultrafilter and polymeric ultrafilter undergo further testing as possible alternatives to the Norton Ceramic filters. Deep bed filtration should be considered as a third alternative, if a backwashable cartridge filter is shown to be inefficient in separate testing.

Georgeton, G.K.; Poirier, M.R.

1990-09-28

76

BWR Full Integral Simulation Test (FIST). Phase I test results  

SciTech Connect

A new full height BWR system simulator has been built under the Full-Integral-Simulation-Test (FIST) program to investigate the system responses to various transients. The test program consists of two test phases. This report provides a summary, discussions, highlights and conclusions of the FIST Phase I tests. Eight matrix tests were conducted in the FIST Phase I. These tests have investigated the large break, small break and steamline break LOCA's, as well as natural circulation and power transients. Results and governing phenomena of each test have been evaluated and discussed in detail in this report. One of the FIST program objectives is to assess the TRAC code by comparisons with test data. Two pretest predictions made with TRACB02 are presented and compared with test data in this report.

Hwang, W.S.; Alamgir, M.; Sutherland, W.A.

1984-09-01

77

Robust inference from multiple test statistics via permutations: a better alternative to the single test statistic approach for randomized trials.  

PubMed

Formal inference in randomized clinical trials is based on controlling the type I error rate associated with a single pre-specified statistic. The deficiency of using just one method of analysis is that it depends on assumptions that may not be met. For robust inference, we propose pre-specifying multiple test statistics and relying on the minimum p-value for testing the null hypothesis of no treatment effect. The null hypothesis associated with the various test statistics is that the treatment groups are indistinguishable. The critical value for hypothesis testing comes from permutation distributions. Rejection of the null hypothesis when the smallest p-value is less than the critical value controls the type I error rate at its designated value. Even if one of the candidate test statistics has low power, the adverse effect on the power of the minimum p-value statistic is not much. Its use is illustrated with examples. We conclude that it is better to rely on the minimum p-value rather than a single statistic particularly when that single statistic is the logrank test, because of the cost and complexity of many survival trials. PMID:23922313

Ganju, Jitendra; Yu, Xinxin; Ma, Guoguang Julie

2013-08-06

78

Testing the robustness of management decisions to uncertainty: Everglades restoration scenarios.  

PubMed

To effectively manage large natural reserves, resource managers must prepare for future contingencies while balancing the often conflicting priorities of different stakeholders. To deal with these issues, managers routinely employ models to project the response of ecosystems to different scenarios that represent alternative management plans or environmental forecasts. Scenario analysis is often used to rank such alternatives to aid the decision making process. However, model projections are subject to uncertainty in assumptions about model structure, parameter values, environmental inputs, and subcomponent interactions. We introduce an approach for testing the robustness of model-based management decisions to the uncertainty inherent in complex ecological models and their inputs. We use relative assessment to quantify the relative impacts of uncertainty on scenario ranking. To illustrate our approach we consider uncertainty in parameter values and uncertainty in input data, with specific examples drawn from the Florida Everglades restoration project. Our examples focus on two alternative 30-year hydrologic management plans that were ranked according to their overall impacts on wildlife habitat potential. We tested the assumption that varying the parameter settings and inputs of habitat index models does not change the rank order of the hydrologic plans. We compared the average projected index of habitat potential for four endemic species and two wading-bird guilds to rank the plans, accounting for variations in parameter settings and water level inputs associated with hypothetical future climates. Indices of habitat potential were based on projections from spatially explicit models that are closely tied to hydrology. For the American alligator, the rank order of the hydrologic plans was unaffected by substantial variation in model parameters. By contrast, simulated major shifts in water levels led to reversals in the ranks of the hydrologic plans in 24.1-30.6% of the projections for the wading bird guilds and several individual species. By exposing the differential effects of uncertainty, relative assessment can help resource managers assess the robustness of scenario choice in model-based policy decisions. PMID:18488629

Fuller, Michael M; Gross, Louis J; Duke-Sylvester, Scott M; Palmer, Mark

2008-04-01

79

The Graphical Display of Simulation Results, with Applications to the Comparison of Robust IRT Estimators of Ability.  

ERIC Educational Resources Information Center

|Simulation studies of the performance of (potentially) robust statistical estimation produce large quantities of numbers in the form of performance indices of the various estimators under various conditions. This report presents a multivariate graphical display used to aid in the digestion of the plentiful results in a current study of Item…

Thissen, David; Wainer, Howard

80

Caloric testing 2. results in normal subjects.  

PubMed

A large number of variables were examined simultaneously for 43 normal subjects over the four irrigations of a caloric test. Care was used for every step of the testing procedure and data analysis to eliminate as much of the variance in the caloric responses as possible. The normality of each variable's distribution was examined using the Wilk-Shapiro W test and corrected if necessary by the best of several transformations. The means, standard deviation, and 95% confidence intervals of the resultant data were derived. Statistical tests of temperature, sidedness, and directionality were done on the variables and several important sources of variance were found and explained. PMID:410352

Sills, A W; Baloh, R W; Honrubia, V

81

Cell Transformation Test Results on Chlorinated Paraffins.  

National Technical Information Service (NTIS)

Please find enclosed cell transformation test results on two chlorinated paraffins (58% chlorination of short chain length n-paraffins and 70% chlorination of long chain length n-paraffins) conducted at Huntingdon Research Centre for one International Chl...

A. Williams J. A. Allen M. Richold S. J. Ransome

1982-01-01

82

Clinical False-Positive Drug Test Results  

Microsoft Academic Search

A confirmed positive drug test reassures all the parties involved in the drug testing process that the reported positive result\\u000a is an analytical true positive and as such is evidence that the individual has been exposed to the drug. That individual may\\u000a not be a drug abuser and may have a valid alternative explanation for the positive result. In this

Tai C. Kwong

83

Sequential Circuit Test Generator (STG) benchmark results  

Microsoft Academic Search

The authors report on the results of running a version of the Sequential Circuit Test Generator (STG3) on the ISCAS-89 sequential circuit benchmarks. First, they present a brief history of STG and briefly describe the algorithms used. They then describe the conditions under which the experiments were run and give the benchmark results. No particular problems were encountered when running

W.-T. Cheng; S. Davidson

1989-01-01

84

Testing alleged mediumship: methods and results.  

PubMed

Mediums claim to be able to communicate with the deceased. Such claims attract a considerable amount of public interest and, if valid, have important implications for many areas of psychology. For over 100 years, researchers have tested alleged mediums. This work has obtained mixed results and provoked a considerable amount of methodological debate. This paper reviews the key issues in this debate, describes how the authors devised a method of testing that aimed to prevent the many problems that have hindered past research, and how they then used this method to test several professional mediums. The results of this work did not support the existence of genuine mediumistic ability. Competing interpretations of these results are discussed, along with ways in which the methodology presented in the paper could be used to assess conceptually similar, but non-paranormal, claims made in clinical, occupational and forensic contexts. PMID:15969829

O'keeffe, Ciarán; Wiseman, Richard

2005-05-01

85

Reactor calculation ''Benchmark'' PCA blind test results  

SciTech Connect

The PCA-PV Benchmark Facility was used to test the accuracy of neutron transport calculations. Several laboratories in the PCA Blind Test, including vendors of power reactors, calculated the neutron flux-spectra and reaction rates of foil detectors for specified locations in the PCA Benchmark. This was done without prior knowledge of the results of dosimetry measurements which were performed in the same configurations. The results showed that the agreement between calculations and measurements was in the range of 10 to 25%. However, a definite tendency toward under-calculation was noted. 24 refs., 22 figs., 13 tabs.

Stallmann, F.W.; Kam, F.B.K.; Eastham, J.F.; Baldwin, C.A.

1981-01-01

86

First results from MIRI verification model testing  

NASA Astrophysics Data System (ADS)

The Mid-Infrared Instrument (MIRI) is one of the three scientific instruments to fly on the James Webb Space Telescope (JWST), which is due for launch in 2013. MIRI contains two sub-instruments, an imager, which has low resolution spectroscopy and coronagraphic capabilities in addition to imaging, and a medium resolution IFU spectrometer. A verification model of MIRI was assembled in 2007 and a cold test campaign was conducted between November 2007 and February 2008. This model was the first scientifically representative model, allowing a first assessment to be made of the performance. This paper describes the test facility and testing done. It also reports on the first results from this test campaign.

Lim, Tanya; Alvarez, Jose L.; Bauwens, Eva; Garcia Bedregal, Alejandro; Blommaert, Joris; Dannerbauer, Helmut; Eccleston, Paul; Ferlet, Marc; Fischer, Sebastian; Garcia-Marin, Macarena; Glasse, Alistair; Glauser, Adrian Michael; Gordon, Karl; Greene, Tom; Grundy, Tim; Hennemann, Martin; Klaas, Ulrich; Labiano, Alvaro; Lahuis, Fred; Martínez-Galarza, Juan Rafael; Martin, Bruno Merin; Morrison, Jane; Nakos, Theodoros; O'Sullivan, Brian; Pindor, Bart; Ressler, Michael; Shaughnessy, Bryan; Vandenbussche, Bart; Wells, Martyn; Wright, Gillian; Zuther, Jens

2008-08-01

87

False positive tuberculosis skin test results.  

PubMed Central

The re-emergence of tuberculosis as a significant public health threat has led to greatly renewed activity in tuberculin skin testing to identify infected persons. However, even use of the preferred skin test technique (intradermal injection of purified protein derivative via the Mantoux method) can lead to either false positive or false negative results. Interpretation of a Mantoux test can be influenced by cross reactions with other mycobacteria, intertester variation, host-response variation, and product related problems. At least 25 apparent false positive purified protein derivative skin test reactions in New York State in 1992 appeared to be associated with lots of the derivative produced by one manufacturer. These unexpected skin test results led to examination of a product with an altered appearance that may have caused the unanticipated responses. After announcement of these false positive results to the press, the company removed the product from the market. Food and Drug Administration analysis later revealed particulate matter in vials of the suspected lots of purified protein derivative.

Grabau, J C; DiFerdinando, G T; Novick, L F

1995-01-01

88

SLD liquid argon calorimeter prototype test results  

SciTech Connect

The results of the SLD test beam program for the selection of a calorimeter radiator composition within a liquid argon system are described, with emphasis on the study of the use of uranium to obtain equalization of pion and electron responses.

Dubois, R.; Eigen, G.; Au, Y.; Sleeman, J.; Breidenbach, M.; Brau, J.; Ludgate, G.A.; Oram, C.J.; Cook, V.; Johnson, J.

1985-10-01

89

Qualification test results for the TIRS cryocooler  

NASA Astrophysics Data System (ADS)

Ball Aerospace has completed qualification testing of its flight Stirling-cycle mechanical cryocooler for the Thermal Infrared Sensor (TIRS), an instrument slated to fly on the Landsat Data Continuity Mission (LDCM) platform. The TIRS cooler, developed under subcontract to NASA Goddard Space Flight Center, consists of a sophisticated and highly reliable, two-stage, fixed regenerator Stirling cryocooler and its drive electronics. The TIRS cooler provides 2 W of 38 K cooling to the TIRS detectors and 9.8 W shield cooling to 85 K for less than 225 W total input power. Performance test results are reported.

Marquardt, Eric; Gully, Wilfred; Marquardt, Jennifer; Boyle, Robert; Hale, Taylor

2012-06-01

90

Development of a method of robust rain gauge network optimization based on intensity-duration-frequency results  

NASA Astrophysics Data System (ADS)

Based on rainfall intensity-duration-frequency (IDF) curves, a robust optimization approach is proposed to identify the best locations to install new rain gauges. The advantage of robust optimization is that the resulting design solutions yield networks which behave acceptably under hydrological variability. Robust optimisation can overcome the problem of selecting representative rainfall events when building the optimization process. This paper reports an original approach based on Montana IDF model parameters. The latter are assumed to be geostatistical variables and their spatial interdependence is taken into account through the adoption of cross-variograms in the kriging process. The problem of optimally locating a fixed number of new monitoring stations based on an existing rain gauge network is addressed. The objective function is based on the mean spatial kriging variance and rainfall variogram structure using a variance-reduction method. Hydrological variability was taken into account by considering and implementing several return periods to define the robust objective function. Variance minimization is performed using a simulated annealing algorithm. In addition, knowledge of the time horizon is needed for the computation of the robust objective function. A short and a long term horizon were studied, and optimal networks are identified for each. The method developed is applied to north Tunisia (area = 21 000 km2). Data inputs for the variogram analysis were IDF curves provided by the hydrological bureau and available for 14 tipping bucket type rain gauges. The recording period was from 1962 to 2001, depending on the station. The study concerns an imaginary network augmentation based on the network configuration in 1973, which is a very significant year in Tunisia because there was an exceptional regional flood event in March 1973. This network consisted of 13 stations and did not meet World Meteorological Organization (WMO) recommendations for the minimum spatial density. So, it is proposed to virtually augment it by 25, 50, 100 and 160% which is the rate that would meet WMO requirements. Results suggest that for a given augmentation robust networks remain stable overall for the two time horizons.

Chebbi, A.; Bargaoui, Z. K.; da Conceiçăo Cunha, M.

2012-12-01

91

Validation of the Chinese Version of the Life Orientation Test with a Robust Weighted Least Squares Approach  

ERIC Educational Resources Information Center

Of the several measures of optimism presently available in the literature, the Life Orientation Test (LOT; Scheier & Carver, 1985) has been the most widely used in empirical research. This article explores, confirms, and cross-validates the factor structure of the Chinese version of the LOT with ordinal data by using robust weighted least squares…

Li, Cheng-Hsien

2012-01-01

92

CLSM bleed water reduction test results  

SciTech Connect

Previous testing by BSRI/SRTC/Raytheon indicated that the CLSM specified for the Tank 20 closure generates about 6 gallons (23 liters) of bleed water per cubic yard of material (0.76 m3).1 This amount to about 10 percent of the total mixing water. HLWE requested that the CLSM mix be optimized to reduce bleed water while maintaining flow. Elimination of bleed water from the CLSM mix specified for High-Level Waste Tank Closure will result in waste minimization, time savings and cost savings. Over thirty mixes were formulated and evaluated at the on-site Raytheon Test Laboratory. Improved low bleed water CLSM mixes were identified. Results are documented in this report.

Langton, C.A. [Westinghouse Savannah River Company, Aiken, SC (United States); Rajendran, N. [Bechtel Savannah River Company, Aiken, SC (United States)

1997-04-21

93

Polyurethane Barrier Surface Tracking Test Results  

Microsoft Academic Search

This paper documents the testing results of the ZR prototype 600-kV mini-Marx trigger generator (MTG) and polyurethane barrier samples from four suppliers. Our goal was to qualify alternative suppliers as future sources of the dielectric interface barriers. The approach was to raise the electric fields on the polyurethane\\/water interface until surface tracks, or flashovers, occurred and compare the hold-off performance

D. L. Smith; J. M. Garde; R. L. Starbird; G. R. Ziska

2005-01-01

94

PHASE I SINGLE CELL ELECTROLYZER TEST RESULTS  

SciTech Connect

This document reports the results of Phase I Single Cell testing of an SO{sub 2}-Depolarized Water Electrolyzer. Testing was performed primarily during the first quarter of FY 2008 at the Savannah River National Laboratory (SRNL) using an electrolyzer cell designed and built at SRNL. Other facility hardware were also designed and built at SRNL. This test further advances this technology for which work began at SRNL in 2005. This research is valuable in achieving the ultimate goal of an economical hydrogen production process based on the Hybrid Sulfur (HyS) Cycle. The focus of this work was to conduct single cell electrolyzer tests to further develop the technology of SO{sub 2}-depolarized electrolysis as part of the HyS Cycle. The HyS Cycle is a hybrid thermochemical cycle that may be used in conjunction with advanced nuclear reactors or centralized solar receivers to produce hydrogen by water-splitting. Like all other sulfur-based cycles, HyS utilizes the high temperature thermal decomposition of sulfuric acid to produce oxygen and regenerate sulfur dioxide. The unique aspect of HyS is the generation of hydrogen in a water electrolyzer that is operated under conditions where dissolved sulfur dioxide depolarizes the anodic reaction, resulting in substantial voltage reduction. Low cell voltage is essential for both thermodynamic efficiency and hydrogen cost. Sulfur dioxide is oxidized at the anode, producing sulfuric acid that is sent to the high temperature acid decomposition portion of the cycle. The electrolyzer cell uses the membrane electrode assembly (MEA) concept. The anode and cathode are formed by spraying platinum containing catalyst on both sides of a Proton Exchange Membrane (PEM). In most testing the material of the PEM was NafionR. The electrolyzer cell active area can be as large as 54.8 cm{sup 2}. Feed to the anode of the electrolyzer is a sulfuric acid solution containing sulfur dioxide. The partial pressure of sulfur dioxide could be varied in the range of 1 to 6 atm (15 to 90 psia). Temperatures could be controlled in the range from ambient to 80 C. Hydrogen generated at the cathode of the cell was collected for the purpose of flow measurement and composition analysis. The test facility proved to be easy to operate, versatile, and reliable.

Steimke, J; Timothy Steeper, T

2008-08-05

95

JWST near infrared detectors: latest test results  

NASA Astrophysics Data System (ADS)

The James Webb Space Telescope, an infrared-optimized space telescope being developed by NASA for launch in 2014, will utilize cutting-edge detector technology in its investigation of fundamental questions in astrophysics. JWST's near infrared spectrograph, NIRSpec utilizes two 2048 × 2048 HdCdTe arrays with Sidecar ASIC readout electronics developed by Teledyne to provide spectral coverage from 0.6 microns to 5 microns. We present recent test and calibration results for the "pathfinder NIRSpec detector subsystem" as well as data processing routines for noise reduction and cosmic ray rejection.

Smith, Erin C.; Rauscher, Bernard J.; Alexander, David; Clemons, Brian L.; Engler, Chuck; Garrison, Matthew B.; Hill, Robert J.; Johnson, Thomas; Lindler, Don J.; Manthripragada, Sridhar S.; Marshall, Cheryl; Mott, Brent; Parr, Thomas M.; Roher, Wayne D.; Shakoorzadeh, Kamdin B.; Schnurr, Richard; Waczynski, Augustyn; Wen, Yiting; Wilson, Donna; Loose, Markus; Bagnasco, Giorgio; Böker, Torsten; de Marchi, Guido; Ferruit, Pierre; Jakobsen, Peter; Strada, Paolo

2009-08-01

96

Preliminary test results for the SVX4  

SciTech Connect

We present and summarize the preliminary test results for SVX4 chip testing. There are presently two versions of the SVX4. Version 2 has on-chip bypassing and Version 1 does not. The on-chip bypassing is a layer of transistors under the front-end analog pipeline that acts as a bypassing capacitor for the voltage supply. Its size is about a microfarad. We aggressively choose to test Version 2 because of this feature. The feature is advantageous for hybrid design because it eliminates the need for an additional passive component on the hybrid itself by placing it on the actual SVX4 die. Also, the SVX4 was designed to operate in two modes: D. and CDF. One can set which mode the chip will operate by placing a jumper in the proper position on the SVX4 chip carrier. In either mode, the chip can either use the operating parameters from the shift register or the shadow register. Similarly, this is selected by placing a jumper on the SVX4 chip carrier. This chip has this feature because it was unknown whether the new design of the shadow register would be operable. The shadow register is also call the SEU register or Single Event Upset register. An introduction into the functionality of the chip and an explanation on the difference between D. and CDF mode can be found in the SVX4 User's Manual [1].

Christofek, L.; Hanagaki, K.; Rapidis, P.; Utes, M.; /Fermilab

2005-06-01

97

HMD fast jet flying test results  

NASA Astrophysics Data System (ADS)

The Helmet Mounted Display (HMD) system has several advantages in comparison with other displays used in the aeroplane. For example, no matter in which direction the pilot looks he always can see relevant flight data. Another point is the support of the pilot by projecting sensor pictures on the visor, especially increasing the pilot's view during night flights by an overlaid FLIR picture on the visor. The weapon delivery is faster and easier assisted by the displayed symbology and the tracking system. It is possible to lock a missile without the necessity of flight maneuvers. In more than 20 night flights on a Tornado Trainer seven different test pilows have tested a binocular HMD prototype. The helmet has been proved in ergonomic aspects, readibility and visibility of the stroke symbology and an overlaid sensor flights. There are great weaknesses for example in ergonomic aspects. The final result of the tests is that the system is not yet ready for series production. There are some important points that much be overworked, especially with the view to an application in fast jets.

Becker, Stefan; Sandl, Peter

2000-06-01

98

Electric Vehicle Battery Test Plan and Results.  

National Technical Information Service (NTIS)

This test plan describes methods and procedures used in testing EV batteries at TVA. Each individual module and vehicle battery pack is given an identification that is traceable through its history. Computer-controlled battery capacity testing equipment i...

T. W. Blickwedel

1984-01-01

99

FFTF (Fast Flux Test Facility) cobalt test assembly results  

SciTech Connect

A cobalt test assembly containing yttrium hydride pins for neutron moderation was irradiated in the Fast Flux Test Facility during Cycle 9A for 137.7 equivalent full power days at a power level of 291 MW. The 36 test pins consisted of a batch of 32 pins containing cobalt metal to produce Co-60, and a set of 4 pins with europium oxide to produce Gd-153, a radioisotope used in detection of the bone disease Osteoporosis. Post-irradiation examination of the cobalt pins determined the Co-60 produced with an accuracy of about 5%. The measured Co-60 spatially distributed concentrations were within 20% of the calculated concentrations. The assembly average Co-60 measured activity was 4% less than the calculated value. The europium oxide pins were gamma scanned for the europium isotopes Eu-152 and Eu-154 to an absolute accuracy of about 10%. The measured europium radioisotope and Gd-153 concentrations were within 20% of calculated values. In conclusion, the hydride assembly performed well and is an excellent vehicle for many Fast Flux Test Facility isotope production applications. The results also demonstrate that the calculational methods developed by the Westinghouse Hanford Company are very accurate. 4 refs., 3 figs., 1 tab.

Rawlins, J.A.; Wootan, D.W.; Carter, L.L.; Brager, H.R.; Schenter, R.E.

1987-10-01

100

Electric vehicle battery test plan and results  

SciTech Connect

This test plan describes methods and procedures used in testing EV batteries at TVA. Each individual module and vehicle battery pack is given an identification that is traceable through its history. Computer-controlled battery capacity testing equipment is used. Three types of tests are performed - acceptance, in-vehicle, and static load. Records of tests are maintained on the forms illustrated and on computer-generated outputs shown.

Blickwedel, T.W.

1984-05-01

101

Flash lidar performance testing: configuration and results  

NASA Astrophysics Data System (ADS)

Future planetary and lunar landers can benefit from a hazard detection (HD) system that employs a lidar to create a highresolution 3D terrain map in the vicinity of the landing site and an onboard computer to process the lidar data and identify the safest landing site within the surveyed area. A divert maneuver would then be executed to land in this safe site. An HD system enables landing in regions with a relatively high hazard abundance that would otherwise be considered unacceptably risky, but are of high interest to the scientific community. A key component of a HD system is a lidar with the ability to generate a 3D terrain image with the required range precision in the prescribed time and fits within the project resource constraints. In this paper, we present the results obtained during performance testing of a prototype "GoldenEye" 3D flash lidar developed by ASC, Inc. The testing was performed at JPL with the lidar and the targets separated by 200 m. The analysis of the lidar performance obtained for different target types and albedos, pulse energies, and fields of view is presented and compared to key HD lidar requirements identified for the Mars 2018 lander.

Poberezhskiy, Ilya; Johnson, Andrew; Chang, Daniel; Ek, Eric; Natzic, David; Spiers, Gary; Penniman, Steve; Short, Brad

2012-05-01

102

Los Alamos test-room results  

SciTech Connect

Fourteen Los Alamos test rooms have been operated for several years; this paper covers operation during the winters of 1980-81 and 1981-82. Extensive data have been taken and computer analyzed to determine performance parameters such as efficiency, solar savings fraction, and comfort index. The rooms are directly comparable because each has the same net coefficient and solar collection area and thus the same load collector ratio. Configurations include direct gain, unvented Trombe walls, water walls, phase change walls, and two sunspace geometries. Strategies for reducing heat loss include selective surfaces, two brands of superglazing windows, a heat pipe system, and convection-suppression baffles. Significant differences in both backup heat and comfort are observed among the various rooms. The results are useful, not only for direct room-to-room comparisons, but also to provide data for validation of computer simulation programs.

McFarland, R.D.; Balcomb, J.D.

1982-01-01

103

Field Lysimeter Test Facility: Second year (FY 1989) test results  

SciTech Connect

The Record of Decision associated with the Hanford Defense Waste Environmental Impact Statement (53 FR 12449-53) commits to an evaluation of the use of protective barriers placed over near-surface wastes. The barrier must protect against wind and water erosion and limit plant and animal intrusion and infiltration of water. Successful conclusion of this program will yield the necessary protective barrier design for near-surface waste isolation. This report presents results from the second year of tests at the FLTF. The primary objective of testing protective barriers at the FLTF was to measure the water budgets within the various barriers and assess the effectiveness of their designs in limiting water intrusion into the zone beneath each barrier. Information obtained from these measurements is intended for use in refining barrier designs. Four elements of water budget were measured during the year: precipitation, evaporation, storage, and drainage. Run-off, which is a fifth element of a complete water budget, was made negligible by a lip on the lysimeters that protrudes 5 cm above the soil surface to prevent run-off. A secondary objective of testing protective barriers at the FLTF was to refine procedures and equipment to support data collection for verification of the computer model needed for long-term projections of barrier performance. 6 refs.

Campbell, M.D.; Gee, G.W.; Kanyid, M.J.; Rockhold, M.L.

1990-04-01

104

Robust Damage-Mitigating Control of Mechanical Systems: Experimental Validation on a Test Apparatus  

Microsoft Academic Search

The goal of damage-mitigating control is to achieve high performance of operating machinery without overstraining the mechanical structures and the potential benefit is an increase in the component service life with no significant loss of performance. This paper presents the design of a test apparatus, the synthesis of a damage-mitigating control system, and the results of experimentation where the objective

Hui Zhang; Asok Ray

1999-01-01

105

Results of the HESSI Test Mishap Investigation.  

National Technical Information Service (NTIS)

On March 21, 2000, the High-Energy Solar Spectroscopic Imager (HESSI) spacecraft was subjected to a series of vibration tests at the Jet Propulsion Laboratory (JPL) as a part of its flight certification program. The structural qualification test, denoted ...

D. B. Worth R. N. Phillips

2000-01-01

106

Robust cosmological bounds on neutrinos and their combination with oscillation results  

NASA Astrophysics Data System (ADS)

We perform a global analysis of cosmological observables in generalized cosmologies which depart from ?CDM models by allowing non-vanishing curvature ? k 6= 0, dark energy with equation of state with ? ? -1, the presence of additional relativistic degrees of freedom ? N rel, and neutrino masses ??= 0. By combining the data from cosmic microwave background (CMB) experiments (in particular the latest results from WMAP-7), the present day Hubble constant (H0) measurement, the high-redshift Type-I supernovae (SN) results and the information from large scale structure (LSS) surveys, we determine the parameters in the 10-dimensional parameter space for such models. We present the results from the analysis when the full shape information from the LSS matter power spectrum (LSSPS) is included versus when only the corresponding distance measurement from the baryon acoustic oscillations (BAO) is accounted for. We compare the bounds on the neutrino mass scale in these generalized scenarios with those obtained for the 6+1 parameter analysis in ?CDM + m ? models and we also study the dependence of those on the set of observables included in the analysis. Finally we combine these results with the information on neutrino mass differences and mixing from the global analysis of neutrino oscillation experiments and derive the presently allowed ranges for the two laboratory probes of the absolute scale of neutrino mass: the effective electron neutrino mass in single beta decay and the effective Majorana neutrino mass in neutrinoless ?? decay.

Gonzalez-Garcia, M. C.; Maltoni, Michele; Salvado, Jordi

2010-08-01

107

Robust optical systems for nondestructive testing based on laser diodes and diffractiveoptical elements  

Microsoft Academic Search

Two robust systems for vibration measurements are presented. Both systems are based on low-cost laser diodes. The stability of the optical systems is achieved by implementing the optical system as a holographic optical element (HOE) while using a common-path interferometer concept for the measurement scheme. The former system facilitates real-time simultaneous tracking of vibrations about two axes perpendicular to the

Steen G. Hanson; Lars R. Lindvold; B. H. Hansen

1998-01-01

108

TESLA Test Facility:status and results  

Microsoft Academic Search

The TESLA Test Facility (TTF), under construction at DESY by an international collaboration, is an R&D test bed for the superconducting option for future linear e+\\/e- colliders. It consists of an infrastructure to process and test the cavities and of a 500 MeV linac. The infrastructure has been installed and is fully operational. It includes a complex of clean rooms,

B. Aune

1996-01-01

109

MHD air preheaters: Results of thermomechanical tests  

Microsoft Academic Search

The thermomechanical tests conducted on four different high-purity periclase magnesia-fired brick were used to select suitable refractory material for the design of a regenerative heat exchanger (Cowper type) for an open-cycle indirect preheating, MHD pilot plant. Tests were conducted under the most severe temperature condition allowable in standard test equipment. The choice among the refractories were made supposing that the

Valente

1994-01-01

110

Robustness of a 3 min all-out cycling test to manipulations of power profile and cadence in humans.  

PubMed

The purpose of this study was to assess whether end-test power output (EP, synonymous with 'critical power') and the work done above EP (WEP) during a 3 min all-out cycling test against a fixed resistance were affected by the manipulation of cadence or pacing. Nine subjects performed a ramp test followed, in random order, by three cadence trials (in which flywheel resistance was manipulated to achieve end-test cadences which varied by approximately 20 r.p.m.) and two pacing trials (30 s at 100 or 130% of maximal ramp test power, followed by 2.5 min all-out effort against standard resistance). End-test power output was calculated as the mean power output over the final 30 s and the WEP as the power-time integral over 180 s for each trial. End-test power output was unaffected by reducing cadence below that of the 'standard test' but was reduced by approximately 10 W on the adoption of a higher cadence [244 +/- 41 W for high cadence (at an end-test cadence of 95 +/- 7 r.p.m.), 254 +/- 40 W for the standard test (at 88 +/- 6 r.p.m.) and 251 +/- 38 W for low cadence (at 77 +/- 5 r.p.m.)]. Pacing over the initial 30 s of the test had no effect on the EP or WEP estimates in comparison with the standard trial. The WEP was significantly higher in the low cadence trial (16.2 +/- 4.4 kJ) and lower in the high cadence trial (12.9 +/- 3.6 kJ) than in the standard test (14.2 +/- 3.7 kJ). Thus, EP is robust to the manipulation of power profile but is reduced by adopting cadences higher than 'standard'. While the WEP is robust to initial pacing applied, it is sensitive to even relatively minor changes in cadence. PMID:17951327

Vanhatalo, Anni; Doust, Jonathan H; Burnley, Mark

2007-10-19

111

A comparison of adjustment methods to test the robustness of an STR DNA database comprised of 24 European populations.  

PubMed

An aim of the European Network of Forensic Science Institutes (ENFSI) is to produce a DNA database of second generation multiplex (SGM) STR profiles that is representative of the resident cosmopolitan populations. To achieve this, data were collected from 24 different populations. All of the data were combined to form one database of 5700 profiles from which allele proportions were calculated. The robustness of this combined European database was tested by estimating parameter d for every DNA profile, where d=log(10)(Pm(c)/Pm(E)) Pm(c) is the match probability of the profile calculated from its cognate database and Pm(E) is the match probability of the combined European database. Overall there was a small tendency for Pm(c)>Pm(E) primarily because of sampling bias. This bias was removed by the simple expediency of applying an adjustment factor to the calculation of Pm(E). These were selected from the Balding size bias correction, the Balding and Nichols Fst correction, a minimum allele proportion (between 0.01 and 0.02), an upper bound of a 95% confidence interval (CI) and a lower bound on the genotype match probability. It was demonstrated that a single European database is a feasible proposition. A combination of different adjustment methods can be used to ensure that the result is conservative relative to the cognate database, and their effect measured by parameter d. PMID:12590058

Gill, Peter; Foreman, Lindsey; Buckleton, John S; Triggs, Christopher M; Allen, Heather

2003-01-28

112

Honeycomb spacer crush stength test results  

SciTech Connect

This report discusses aluminum honeycomb spacers, which are used as an energy absorbent material in shipping packages for off site shipment of radioactive materials and which were ordered in two crush strengths, 1,000 psi and 2,000 psi for use in drop tests requested by the Packaging and Transportation group as part of the shipping container rectification process. Both the group as part of the shipping container rectification process. Both the vendor and the SRTC Materials Laboratory performed crush strength measurements on test samples made from the material used to fabricate the actual spacers. The measurements of crush strength made in the SRTC Materials Laboratory are within 100 psi of the measurements made by the manufacturer for all samples tested and all test measurements are within 10% of the specified crush strength, which is acceptable to the P&T group for the planned tests.

Leader, D.R.

1993-09-15

113

Hematuria home screening: repeat testing results.  

PubMed

To determine at what interval screening should be repeated to detect bladder cancer before it becomes muscle invasive 856 men who had 14 negative daily home tests for hematuria with a chemical reagent strip 9 months previously performed repeat tests. Of these men 50 (5.8%) had at least 1 positive test during the second 14-day screening period and 38 were evaluated, 15 of whom (39.5%) had significant urological pathological conditions, including 8 with malignancies. Bladder cancer was noted in 7 men, with no tumor invading the muscularis propria. The finding of 7 bladder cancers in 856 men (0.82%) who had a negative test 9 months previously indicates that bladder cancer has a brief preclinical duration and that testing must be repeated at least annually for screening to detect bladder cancer consistently before invasion occurs. PMID:7776456

Messing, E M; Young, T B; Hunt, V B; Newton, M A; Bram, L L; Vaillancourt, A; Hisgen, W J; Greenberg, E B; Kuglitsch, M E; Wegenke, J D

1995-07-01

114

A robust MEMS probe card with vertical guide for a fine pitch test  

NASA Astrophysics Data System (ADS)

A vertically guided MEMS probe card was designed to deflect 50 µm at a force of 1.5 g and achieve less than 50 µm of pad pitch. Based on our experimental results, the measured average contact resistance of a device under test (DUT) was approximately 0.2 ? at 1.44 g of force and the leakage current between two tips in the distance of one pitch was about 10 pA. In addition, tip planarity was about ±6 µm with x-y alignment errors within ±8 µm. A reliability test showed that the average contact resistance was 0.34 ? and the probe tip wear was less than 1 µm after the 10 000 timed touchdowns. To be capable of fine pitch probing, a cantilever beam was constructed by dry etching using a positive photoresist. After the cantilever beam was formed by silicon etching using a deep RIE etcher inside a deep-recessed trench, a vertically guided structure was created from the cantilever beam. Furthermore, to make a horizontally stopped structure, the cantilever beam was designed to have a pyramid tip with a width bigger than that of the beam itself. This kind of structure is mechanically stable when the tip is applied with an oblique force. Because the probe card can be guided vertically and horizontally, it can be neither broken nor deformed by any directional force. In that respect, this newly proposed probe card is suitable for wafer-level testing and fine pitch device testing.

Kim, Bong-Hwan; Kim, Hyeon-Cheol; Choi, Soon-Don; Chun, Kukjin; Kim, Jong-Bok; Kim, Jong-Hyun

2007-07-01

115

Photovoltaic concentrator test results and interpretations  

Microsoft Academic Search

A series of actively- and passively-cooled photovoltaic modules and arrays have been tested at the Sandia Photovoltaic Advanced Systems Test Facility. Four actively-cooled collectors were studied: (1) the Acurex parabolic trough module efficiency is 7.9%, (2) the E-systems module demonstrates a 9.9% efficiency, (3) the General Electric module has an 8.2% efficiency, and (4) the Varian module measures a 14%

H. J. Gerwin

1981-01-01

116

Photovoltaic concentrator test results and interpretations  

NASA Astrophysics Data System (ADS)

A series of actively- and passively-cooled photovoltaic modules and arrays have been tested at the Sandia Photovoltaic Advanced Systems Test Facility. Four actively-cooled collectors were studied: (1) the Acurex parabolic trough module efficiency is 7.9%, (2) the E-systems module demonstrates a 9.9% efficiency, (3) the General Electric module has an 8.2% efficiency, and (4) the Varian module measures a 14% efficiency. Among the passively-cooled collectors tested is the Martin-Marietta Array, and it is shown that a 10 C difference in cell temperature changes the conversion efficiency from 9.0 to about 9.4%. In addition, the Spectrolab array has been 99.2% reliable and has a measured efficiency of 7.4%. Finally, the Motorola module demonstrates efficiencies of 7.8% and 10.7%. In order to compare collector performances, each design must be optimized.

Gerwin, H. J.

117

Robust cross-links in molluscan adhesive gels: testing for contributions from hydrophobic and electrostatic interactions.  

PubMed

The cross-linking interactions that provide cohesive strength to molluscan adhesive gels were investigated. Metal-based interactions have been shown to play an important role in the glue of the slug Arion subfuscus (Draparnaud), but other types of interactions may also contribute to the glue's strength and their role has not been investigated. This study shows that treatments that normally disrupt hydrophobic or electrostatic interactions have little to no effect on the slug glue. High salt concentrations and non-ionic detergent do not affect the solubility of the proteins in the glue or the ability of the glue proteins to stiffen gels. In contrast, metal chelation markedly disrupts the gel. Experiments with gel filtration chromatography identify a 40 kDa protein that is a central component of the cross-links in the glue. This 40 kDa protein forms robust macromolecular aggregations that are stable even in the presence of high concentrations of salt, non-ionic detergent, urea or metal chelators. Metal chelation during glue secretion, however, may block some of these cross-links. Such robust, non-specific interactions in an aqueous environment are highly unusual for hydrogels and reflect an intriguing cross-linking mechanism. PMID:18952190

Smith, A M; Robinson, T M; Salt, M D; Hamilton, K S; Silvia, B E; Blasiak, R

2008-10-15

118

Phase C Flygt Mixer Test Results  

SciTech Connect

The Savannah River Site (SRS) teamed with the Pacific Northwest National Laboratory (PNNL), Oak Ridge National Laboratory (ORNL), and ITT Flygt Corporation to conduct a test program evaluating shrouded axial propeller mixers (Flygt mixers) for heel removal in SRS Tank 19. SRS is identifying and investigating techniques to remove sludge heels from waste tanks such as Tank 19.

Poirier, M.R.

1999-06-08

119

Advanced stellar compass deep space navigation, ground testing results  

NASA Astrophysics Data System (ADS)

Deep space exploration is in the agenda of the major space agencies worldwide and at least the European Space Agency (SMART & Aurora Programs) and the American NASA (New Millennium Program) have set up programs to allow the development and the demonstration of technologies that can reduce the risks and the costs of the deep space missions. Navigation is the Achilles' heel of deep space. Being performed on ground, it imposes considerable constraints on the system and the operations, it is very expensive to execute, especially when the mission lasts several years and, above all, it is not failure tolerant. Nevertheless, up to now, ground navigation has been the only possible solution. The technological breakthrough of advanced star trackers, like the micro-Advanced Stellar Compass (?ASC) might change this situation. Indeed, exploiting the capabilities of this instrument, the authors have devised a method to determine the orbit of a spacecraft autonomously, on-board and without any a-priori knowledge of any kind. The solution is robust, elegant and fast. This paper presents the preliminary performances obtained during the ground tests. The results are very positive and encouraging.

Betto, M.; Jřrgensen, J. L.; Jřrgensen, P. S.; Denver, T.

2003-11-01

120

Advanced stellar compass deep space navigation, ground testing results  

NASA Astrophysics Data System (ADS)

Deep space exploration is in the agenda of the major space agencies worldwide and at least the European Space Agency (SMART & Aurora Programs) and the American NASA (New Millennium Program) have set up programs to allow the development and the demonstration of technologies that can reduce the risks and the costs of the deep space missions. Navigation is the Achilles’ heel of deep space. Being performed on ground, it imposes considerable constraints on the system and the operations, it is very expensive to execute, especially when the mission lasts several years and, above all, it is not failure tolerant. Nevertheless, up to now, ground navigation has been the only possible solution. The technological breakthrough of advanced star trackers, like the micro-advanced stellar compass (?ASC) might change this situation. Indeed, exploiting the capabilities of this instrument, the authors have devised a method to determine the orbit of a spacecraft autonomously, on-board and without any a priori knowledge of any kind. The solution is robust, elegant and fast. This paper presents the preliminary performances obtained during the ground tests. The results are very positive and encouraging.

Betto, M.; Jřrgensen, J. L.; Jřrgensen, P. S.; Denver, T.

2006-10-01

121

A34 MAT TESTS: RESULTS AND ANALYSIS  

Microsoft Academic Search

ABSTRACT This report describes a series of tests conducted on a UK trunk road in which the dynamic,tyre forces generated by over 1500 heavy goods vehicles (HGV’s) were measured,using a load measuring mat containing 144 capacitive strip sensors. This data was used to investigate the relative road damaging potential of the various classes of vehicles, and the degree of spatial

A. C. Collop; D. Cebon; D. J. Cole; T. E. C. Potter

1994-01-01

122

HTS SMES magnet design and test results  

Microsoft Academic Search

This paper describes design, construction, and testing of a 5 kJ superconducting magnetic energy storage (SMES) magnet. This magnet was built by American Superconductor Corporation (ASC) for Gesellschaft fur Innovative Energieumwandlung und Speicherung (EUS) of Germany. The magnet consists of a solenoidal coil constructed from a silver-sheathed BiPb2Sr2Ca2Cu2O (Bi-2223) conductor which was reacted before winding. The coil is epoxy impregnated

S. S. Kalsi; D. Aized; B. Conner; G. Snitchier; J. Campbell; R. E. Schwall; J. Kellers; T. Stephanblome; A. Tromm; P. Winn

1997-01-01

123

Test Results for Fmvss 110. Volume 2. 12 Tests.  

National Technical Information Service (NTIS)

The following automobile and tire combinations were tested for compliance with Federal Motor Vehicle Safety Standard 110: Cougar A, Goodyear Wide Tread; Chevelle G, Uniroyal Laredo; Dodge Monaco, Goodyear Power Cushion; Pontiac Firebird 1, Goodyear Speedw...

1969-01-01

124

OPERA Resistive Plate Chambers underground test results  

NASA Astrophysics Data System (ADS)

The OPERA experiment [M. Guler et al., CERN/SPSC 2000-028, SPSC/P318, LNGS P25/2000, July 10, 2000; M. Guler et al., CERN/SPSC 2001-025, SPSC/M668, LNGS-EXP 30/2001 Add. 1/01, August 21, 2001] will study ??? oscillations through ? appearance on the 732 Km long CERN to Gran Sasso baseline. The magnet yokes of the two muon spectrometers are instrumented with 44 layers of high resistivity bakelite Resistive Plate Chambers (RPCs) operated in streamer mode. Each layer covers about 70 m2. Four RPC planes were instrumented and the first tests were performed confirming a good behaviour of the installed RPCs in terms of intrinsic noise and operating currents. The measured noise maps agree with those obtained in the extensive quality tests performed at surface. Counting rates are below 20 Hz/m2. Single an multiple cosmic muon tracks were also reconstructed. The estimated efficiency is close to the geometrical limit and the very first measurements of the absolute and differential muon flux are in agreement with expectations.

Bergnoli, A.; Brugnera, R.; Candela, A.; Carrara, E.; Ciesielski, R.; Dal Corso, F.; Degli Esposti, L.; di Giovanni, A.; D'Incecco, M.; di Troia, C.; Dusini, S.; Fanin, C.; Felici, G.; Gambarara, A.; Garfagnini, A.; Gatta, M.; Grianti, F.; Gustavino, C.; Lindozzi, M.; Longhin, A.; Mengucci, A.; Monacelli, P.; Paoloni, A.; Stanco, L.; Tatananni, E.; Terranova, F.; Spinetti, M.; Stipcevic, M.; Sugonyaev, V.; Terminiello, L.; Ventura, M.; Votano, L.

2006-08-01

125

Uncertainty in in-place filter test results  

SciTech Connect

Some benefits of accounting for uncertainty in in-place filter test results are explored. Information the test results provide relative to system performance acceptance limits is evaluated in terms of test result uncertainty. An expression for test result uncertainty is used to estimate uncertainty in in-place filter tests on an example air cleaning system. Modifications to the system test geometry are evaluated in terms of effects on test result uncertainty.

Scripsick, R.C.; Beckman, R.J.; Mokler, B.V.

1996-12-31

126

Power and robustness of a score test for linkage analysis of quantitative traits using identity by descent data on sib pairs.  

PubMed

Identification of genes involved in complex traits by traditional (lod score) linkage analysis is difficult due to many complicating factors. An unfortunate drawback of non-parametric procedures in general, though, is their low power to detect genetic effects. Recently, Dudoit and Speed [2000] proposed using a (likelihood-based) score test for detecting linkage with IBD data on sib pairs. This method uses the likelihood for theta, the recombination fraction between a trait locus and a marker locus, conditional on the phenotypes of the two sibs to test the null hypothesis of no linkage (theta = (1/2)). Although a genetic model must be specified, the approach offers several advantages. This paper presents results of simulation studies characterizing the power and robustness properties of this score test for linkage, and compares the power of the test to the Haseman-Elston and modified Haseman-Elston tests. The score test is seen to have impressively high power across a broad range of true and assumed models, particularly under multiple ascertainment. Assuming an additive model with a moderate allele frequency, in the range of p = 0.2 to 0.5, along with heritability H = 0.3 and a moderate residual correlation rho = 0.2 resulted in a very good overall performance across a wide range of trait-generating models. Generally, our results indicate that this score test for linkage offers a high degree of protection against wrong assumptions due to its strong robustness when used with the recommended additive model. PMID:11319783

Goldstein, D R; Dudoit, S; Speed, T P

2001-05-01

127

A doubly robust test for gene-environment interaction in family-based studies of affected offspring  

PubMed Central

We develop a locally efficient test for (multiplicative) gene–environment interaction in family studies that collect genotypic information and environmental exposures for affected offspring along with genotypic information for their parents or relatives. The proposed test does not require modeling the effects of environmental exposures and is doubly robust in the sense of being valid if either a model for the main genetic effect holds or a model for the expected environmental exposure (given the offspring affection status and parental mating types) but not necessarily both. It extends the FBAT-I to allow for missing parental mating types and families of arbitrary size. Simulation studies and the analysis of an Alzheimer's disease study confirm the adequate performance of the proposed test.

Moerkerke, Beatrijs; Vansteelandt, Stijn; Lange, Christoph

2010-01-01

128

Test Results for Residual Moisture - Atryn  

Center for Biologics Evaluation and Research (CBER)

... ID 000482, “pH Determination”. Solubility was evaluated after reconstitution with 10 ml of ASTM Type 1 reagent grade water. ... More results from www.fda.gov/biologicsbloodvaccines/bloodbloodproducts/approvedproducts

129

The Robustness of the Student T Test when Sampling from A Weibull Distribution.  

National Technical Information Service (NTIS)

When testing with the t-test, it is assumed that the sample under investigation is from a normal population. The purpose of this thesis is to examine the sensitivity of the t-test to violations of this normality assumption. A computer simulation was perfo...

D. P. Allen

1970-01-01

130

Automatic Generation of Instructions to Robustly Test Delay Defects in Processors  

Microsoft Academic Search

We present a technique for generating instruction sequences to test a processor functionally. We target delay defects with this technique using an ATPG engine to generate delay tests locally, a verification engine to map the tests globally, and a feedback mechanism that makes the entire procedure faster. We demonstrate nearly 96% coverage of delay faults with the instruction sequences generated.

Sankar Gurumurthy; Ramtilak Vemu; Jacob A. Abraham; Daniel G. Saab

2007-01-01

131

Uncertainties in the Item Parameter Estimates and Robust Automated Test Assembly  

ERIC Educational Resources Information Center

|Item response theory parameters have to be estimated, and because of the estimation process, they do have uncertainty in them. In most large-scale testing programs, the parameters are stored in item banks, and automated test assembly algorithms are applied to assemble operational test forms. These algorithms treat item parameters as fixed values,…

Veldkamp, Bernard P.; Matteucci, Mariagiulia; de Jong, Martijn G.

2013-01-01

132

Trend Tests for Case-Control Studies of Genetic Markers: Power, Sample Size and Robustness  

Microsoft Academic Search

The Cochran-Armitage trend test is commonly used as a genotype-based test for candidate gene association. Corresponding to each underlying genetic model there is a particular set of scores assigned to the genotypes that maximizes its power. When the variance of the test statistic is known, the formulas for approximate power and associated sample size are readily obtained. In practice, however,

Boris Freidlin; Gang Zheng; Zhaohai Li; Joseph L. Gastwirth

2002-01-01

133

Airlift recirculation well test results -- Southern sector  

SciTech Connect

Chlorinated solvents used in the A and M-Areas at the Savannah River Site (SRS) from 1952--1982 have contaminated the groundwater under the site. A plume of groundwater contaminated with trichloroethylene (TCE) and perchloroethylene (PCE) in the Lost Lake aquifer is moving generally southward with the natural flow of groundwater. To comply with the requirements of the current SCDHEC Part B Permit, a series of wells is being installed to contain and treat the plume. Airlift Recirculation Wells (ARW) are a new and innovative technology with potential for more cost effective implementation than conventional pump and treat systems. Two Airlift Recirculation Wells have been installed and tested to quantify performance parameters needed to locate a line of these wells along the leading edge of the contaminant plume. The wells proved to be very sensitive to proper development, but after this requirement was met, performance was very good. The Zone of Capture has been estimated to be within a radius of 130--160 ft. around the wells. Thus a line of wells spaced at 250 ft. intervals could intercept the contaminant plume. At SSR-012, TCE was stripped from the groundwater at approximately 1.2 lb./day. The longer term effect of the recirculation wells upon the plume and the degree of recirculation within the aquifer itself will require additional data over a longer time period for an accurate review. Data collection is ongoing.

White, R.M.; Hiergesell, R.A.

1997-08-01

134

Panoramic night vision goggle flight test results  

NASA Astrophysics Data System (ADS)

The Panoramic Night Vision Goggle (PNVG) has begun operational test and evaluation with its 100-degree horizontal by 40-degree vertical field of view (FOV) on different aircraft and at different locations. Two configurations of the PNVG are being evaluated. The first configuration design (PNVG I) is very low in profile and fits underneath a visor. PNVG I can be retained by the pilot during ejection. This configuration is interchangeable with a day helmet mounted tracker and display through a standard universal connector. The second configuration (PNVG II) resembles the currently fielded 40-degree circular FOV Aviator Night Vision Imaging Systems (ANVIS) and is designed for non-ejection seat aircraft and ground applications. Pilots completed subjective questionnaires after each flight to compare the capability of the 100-degree horizontal by 40-degree vertical PNVG to the 40-degree circular ANVIS across different operational tasks. This paper discusses current findings and pilot feedback from the flight trials objectives of the next phase of the PNVG program are also discussed.

Franck, Douglas L.; Geiselman, Eric E.; Craig, Jeffrey L.

2000-06-01

135

Project SAVE: Evaluation of Pilot Test Results  

ERIC Educational Resources Information Center

The long-term goal of Project SAVE (Stop Alcohol Violations Early) is to reduce underage drinking. When a major revision of the program was initiated, the pilot program was evaluated for statistically measurable changes against short-term goals. The results of that evaluation are presented here. Four elements were included in the evaluation…

Bell, Mary Lou; Bliss, Kappie

136

Rhesus monkeys (Macaca mulatta) show robust evidence for memory awareness across multiple generalization tests.  

PubMed

The possibility that memory awareness occurs in nonhuman animals has been evaluated by providing opportunity to decline memory tests. Current evidence suggests that rhesus monkeys (Macaca mulatta) selectively decline tests when memory is weak (Hampton in Proc Natl Acad Sci USA 98:5359-5362, 2001; Smith et al. in Behav Brain Sci 26:317-374, 2003). However, much of the existing research in nonhuman metacognition is subject to the criticism that, after considerable training on one test type, subjects learn to decline difficult trials based on associative learning of external test-specific contingencies rather than by evaluating the private status of memory or other cognitive states. We evaluated whether such test-specific associations could account for performance by presenting monkeys with a series of generalization tests across which no single association with external stimuli was likely to adaptively control use of the decline response. Six monkeys performed a four alternative delayed matching to location task and were significantly more accurate on trials with a decline option available than on trials without it, indicating that subjects selectively declined tests when memory was weak. Monkeys transferred appropriate use of the decline response under three conditions that assessed generalization: two tests that weakened memory and one test that enhanced memory in a novel way. Bidirectional generalization indicates that use of the decline response by monkeys is not controlled by specific external stimuli but is rather a flexible behavior based on a private assessment of memory. PMID:22183204

Templer, Victoria L; Hampton, Robert R

2011-12-20

137

Rhesus monkeys (Macaca mulatta) show robust evidence for memory awareness across multiple generalization tests  

PubMed Central

The possibility that memory awareness occurs in nonhuman animals has been evaluated by providing opportunity to decline memory tests. Current evidence suggests that rhesus monkeys (Macaca mulatta) selectively decline tests when memory is weak (Hampton, 2001; Smith, Shields, & Washburn, 2003). (R.R. Hampton, 2001; Smith, Shields, & Washburn, 2003). However, much of the existing research in nonhuman metacognition is subject to the criticism that, after considerable training on one test type, subjects learn to decline difficult trials based on associative learning of external test-specific contingencies rather than by evaluating the private status of memory or other cognitive states. We evaluated whether such test-specific associations could account for performance by presenting monkeys with a series of generalization tests across which no single association with external stimuli was likely to adaptively control use of the decline response. Six monkeys performed a four alternative delayed matching to location task and were significantly more accurate on trials with a decline option available than on trials without it, indicating that subjects selectively declined tests when memory was weak. Monkeys transferred appropriate use of the decline response under three conditions that assessed generalization: two tests that weakened memory and one test that enhanced memory in a novel way. Bidirectional generalization indicates that use of the decline response by monkeys is not controlled by specific external stimuli but is rather a flexible behavior based on a private assessment of memory.

Templer, Victoria L.; Hampton, Robert R.

2012-01-01

138

49 CFR 199.109 - Review of drug testing results.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Review of drug testing results. 199.109 Section 199.109...OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY DRUG AND ALCOHOL TESTING Drug Testing § 199.109 Review of drug testing...

2012-10-01

139

49 CFR 199.109 - Review of drug testing results.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Review of drug testing results. 199.109 Section 199.109...OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY DRUG AND ALCOHOL TESTING Drug Testing § 199.109 Review of drug testing...

2011-10-01

140

12 CFR 252.157 - Disclosure of stress test results.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Disclosure of stress test results. 252.157 Section 252...STANDARDS (REGULATION YY) Company-Run Stress Test Requirements for Banking Organizations...Companies § 252.157 Disclosure of stress test results. (a) Public...

2013-01-01

141

12 CFR 252.147 - Reports of stress test results.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Reports of stress test results. 252.147 Section...STANDARDS (REGULATION YY) Company-Run Stress Test Requirements for Covered Companies § 252.147 Reports of stress test results. (a) Reports to...

2013-01-01

142

12 CFR 252.148 - Disclosure of stress test results.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Disclosure of stress test results. 252.148 Section...STANDARDS (REGULATION YY) Company-Run Stress Test Requirements for Covered Companies § 252.148 Disclosure of stress test results. (a) Public...

2013-01-01

143

12 CFR 325.207 - Publication of stress test results.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Publication of stress test results. 325.207 Section 325.207...GENERAL POLICY CAPITAL MAINTENANCE Annual Stress Test § 325.207 Publication of stress test results. (a) Publication...

2013-01-01

144

How robust are the constraints on cosmology and galaxy evolution from the lens-redshift test?  

NASA Astrophysics Data System (ADS)

The redshift distribution of galaxy lenses in known gravitational lens systems provides a powerful test that can potentially discriminate amongst cosmological models. However, applications of this elegant test have been curtailed by two factors: our ignorance of how galaxies evolve with redshift, and the absence of methods to deal with the effect of incomplete information in lensing systems. In this paper, we investigate both issues in detail. We explore how to extract the properties of evolving galaxies, assuming that the cosmology is well determined by other techniques. We propose a new nested Monte Carlo method to quantify the effects of incomplete data. We apply the lens-redshift test to an improved sample of seventy lens systems derived from recent observations, primarily from the SDSS, SLACS and the CLASS surveys. We find that the limiting factor in applying the lens-redshift test derives from poor statistics, including incomplete information samples and biased sampling. Many lenses that uniformly sample the underlying true image separation distribution will be needed to use this test as a complementary method to measure the value of the cosmological constant or the properties of evolving galaxies. Planned future surveys by missions like the SNAP satellite or LSST are likely to usher in a new era for strong lensing studies that utilize this test. With expected catalogues of thousands of new strong lenses, the lens-redshift test could offer a powerful tool to probe cosmology as well as galaxy evolution.

Capelo, Pedro R.; Natarajan, Priyamvada

2007-12-01

145

Robust testing of level changes in interrupted time-series analysis  

Microsoft Academic Search

Ramsey and Ramsey [Ramsey, P.P. and Ramsey, P.H., 2003, Comparing lease-squares lines for testing level changes in interrupted time-series analysis. Journal of Statistical Computation and Simulation, 73, 31–44.] have shown that a composite procedure (CP) can provide accurate tests of level changes in interrupted time-series analysis. A CP combines the Mann–Wald procedure [Gottman, J.M., 1981, Time-Series Analysis (New York: Cambridge

Patricia P. Ramsey; Philip H. Ramsey

2006-01-01

146

Robust and powerful tests for rare variants using Fisher's method to combine evidence of association from two or more complementary tests.  

PubMed

Many association tests have been proposed for rare variants, but the choice of a powerful test is uncertain when there is limited information on the underlying genetic model. Proposed methods use either linear statistics, which are powerful when most variants are causal and have the same direction of effect, or quadratic statistics, which are more powerful in other scenarios. To achieve robustness, it is natural to combine the evidence of association from two or more complementary tests. To this end, we consider the minimum-p and Fisher's methods of combining P-values from linear and quadratic statistics. Extensive simulation studies show that both methods are robust across models with varying proportions of causal, deleterious, and protective rare variants, allele frequencies, and effect sizes. When the majority (>75%) of the causal effects are in the same direction (deleterious or protective), Fisher's method consistently outperforms the minimum-p and the individual linear and quadratic tests, as well as the optimal sequence kernel association test, SKAT-O. When the individual test has moderate power, Fisher's test has improved power for 90% of the ~5000 models considered, with >20% relative efficiency gain for 40% of the models. The maximum absolute power loss is 8% for the remaining 10% of the models. An application to the GAW17 quantitative trait Q2 data based on sequence data of the 1000 Genomes Project shows that, compared with linear and quadratic tests, Fisher's test has comparable power for all 13 functional genes and provides the best power for more than half of them. PMID:23032573

Derkach, Andriy; Lawless, Jerry F; Sun, Lei

2012-10-02

147

Robust statistical tests of Dragon-Kings beyond power law distributions  

NASA Astrophysics Data System (ADS)

We ask the question whether it is possible to diagnose the existence of "Dragon-Kings" (DK), namely anomalous observations compared to a power law background distribution of event sizes. We present two new statistical tests, the U-test and the DK-test, aimed at identifying the existence of even a single anomalous event in the tail of the distribution of just a few tens of observations. The DK-test in particular is derived such that the p-value of its statistic is independent of the exponent characterizing the null hypothesis, which can use an exponential or power law distribution. We demonstrate how to apply these two tests on the distributions of cities and of agglomerations in a number of countries. We find the following evidence for Dragon-Kings: London in the distribution of city sizes of Great Britain; Moscow and St-Petersburg in the distribution of city sizes in the Russian Federation; and Paris in the distribution of agglomeration sizes in France. True negatives are also reported, for instance the absence of Dragon-Kings in the distribution of cities in Germany.

Pisarenko, V. F.; Sornette, D.

2012-05-01

148

Identity Test Results Memo, May 6, 2010 - MenHibrix  

Center for Biologics Evaluation and Research (CBER)

... Identity Test Results Memo, May 6, 2010 - MenHibrix. MEMORANDUM. Date: 06 May, 2010. ... Product. Lot Number. Identity Test Results. Hib-TT. ... More results from www.fda.gov/biologicsbloodvaccines/vaccines/approvedproducts

149

Abstract: Evaluation of Test Statistics for Robust Structural Equation Modeling With Nonnormal Missing Data  

Microsoft Academic Search

Traditional structural equation modeling (SEM) techniques have trouble dealing with incomplete and\\/or nonnormal data that are often encountered in practice. Yuan and Zhang (2011a) developed a two-stage procedure for SEM to handle nonnormal missing data and proposed four test statistics for overall model evaluation. Although these statistics have been shown to work well with complete data, their performance for incomplete

Xin Tong; Zhiyong Zhang; Ke-Hai Yuan

2011-01-01

150

Power and robustness of a track-loss detector based on Kolmogorov-Smirnov tests  

Microsoft Academic Search

It is important in the practical application of data association algorithms to target tracking in cluttered environments to be able to effectively and efficiently detect track-loss in the absence of truth data. We recently developed a track-loss detector using Kolmogorov-Smirnov tests to determine the regime of filter operation in the absence of truth data for data association algorithms where estimates

Richard M. Powers; Lucy Y. Pao

2006-01-01

151

Robustness test of a system of MSGC/+GEM detectors at the cyclotron facility of the Paul Scherrer institute  

NASA Astrophysics Data System (ADS)

A system of detector modules consisting of a large size Gas Electron Multiplier (GEM), coupled to Micro Strip Gas Counters (MSGC), has been exposed to a pion beam at the Paul Scherrer Institute Cyclotron facility. As part of a CMS tracker milestone, the aim of this test was to investigate the robustness of such detectors when exposed to experimental conditions close to what is expected at the Large Hadron Collider (LHC) of CERN. Eighteen detector modules have been operated at voltage settings corresponding to 98% detection efficiency for Minimum Ionizing Particles during a period of 5 weeks. Sparking rates and strip losses have been monitored throughout the exposure. An operation margin of at least a factor of three with respect to the required gas gain has been demonstrated.

Ageron, M.; Albert, A.; Barvich, T.; Beaumont, W.; Beckers, T.; Bernier, K.; Blüm, P.; Bouhali, O.; Boulogne, I.; Bouvet, D.; Brom, J. M.; Charles, F.; Coffin, J.; Contardo, D.; Daubie, E.; Didierjean, F.; Erdmann, M.; De Lentdecker, G.; Devroede, O.; De Troy, J.; Ernenwein, J. P.; Fahrer, M.; Flügge, G.; Fontaine, J. C.; Geist, W.; Goerlach, U.; Gottschalk, M.; Helleboid, J. M.; Huss, D.; Iacopi, F.; Kärcher, K.; Kühn, F.; Juillot, P.; Lounis, A.; Maazouzi, C.; Macke, D.; Martin, C.; Mirabito, L.; Moreau, S.; Müller, T.; Neuberger, D.; Nowack, A.; Perries, S.; Ripp-Baudot, I.; Röderer, F.; Schulte, R.; Shekhtman, L.; Simonis, H. J.; Struczinski, W.; Tatarinov, A.; Thümmel, W. H.; Udo, F.; Van Doninck, W.; Van Dyck, C.; Vander Velde, C.; Vanlaer, P.; Van Lancker, L.; Weiler, T.; Zander, A.; Zghiche, A.; Zhukov, V.

2001-10-01

152

A Robust Method of Measuring Other-Race and Other-Ethnicity Effects: The Cambridge Face Memory Test Format  

PubMed Central

Other-race and other-ethnicity effects on face memory have remained a topic of consistent research interest over several decades, across fields including face perception, social psychology, and forensic psychology (eyewitness testimony). Here we demonstrate that the Cambridge Face Memory Test format provides a robust method for measuring these effects. Testing the Cambridge Face Memory Test original version (CFMT-original; European-ancestry faces from Boston USA) and a new Cambridge Face Memory Test Chinese (CFMT-Chinese), with European and Asian observers, we report a race-of-face by race-of-observer interaction that was highly significant despite modest sample size and despite observers who had quite high exposure to the other race. We attribute this to high statistical power arising from the very high internal reliability of the tasks. This power also allows us to demonstrate a much smaller within-race other ethnicity effect, based on differences in European physiognomy between Boston faces/observers and Australian faces/observers (using the CFMT-Australian).

McKone, Elinor; Stokes, Sacha; Liu, Jia; Cohan, Sarah; Fiorentini, Chiara; Pidcock, Madeleine; Yovel, Galit; Broughton, Mary; Pelleg, Michel

2012-01-01

153

A robust method of measuring other-race and other-ethnicity effects: the Cambridge Face Memory Test format.  

PubMed

Other-race and other-ethnicity effects on face memory have remained a topic of consistent research interest over several decades, across fields including face perception, social psychology, and forensic psychology (eyewitness testimony). Here we demonstrate that the Cambridge Face Memory Test format provides a robust method for measuring these effects. Testing the Cambridge Face Memory Test original version (CFMT-original; European-ancestry faces from Boston USA) and a new Cambridge Face Memory Test Chinese (CFMT-Chinese), with European and Asian observers, we report a race-of-face by race-of-observer interaction that was highly significant despite modest sample size and despite observers who had quite high exposure to the other race. We attribute this to high statistical power arising from the very high internal reliability of the tasks. This power also allows us to demonstrate a much smaller within-race other ethnicity effect, based on differences in European physiognomy between Boston faces/observers and Australian faces/observers (using the CFMT-Australian). PMID:23118912

McKone, Elinor; Stokes, Sacha; Liu, Jia; Cohan, Sarah; Fiorentini, Chiara; Pidcock, Madeleine; Yovel, Galit; Broughton, Mary; Pelleg, Michel

2012-10-30

154

Results of Ocular Dominance Testing Depend on Assessment Method  

PubMed Central

Purpose We developed a near ocular dominance test modeled after the distance hole-in-the card test, and assessed both test-retest reliability of four tests of ocular dominance and agreement between tests. Methods 46 subjects ages 18 to 78 years with visual acuity 20/40 or better in each eye were enrolled from a primary care practice. All subjects had normal eye examinations, with the exception of refractive error, and were examined in their habitual correction. Subjects were tested twice each with the distance hole-in-the-card test, new near hole- in-the-card test, near convergence test, and the Pediatric Eye Disease Investigator Group (PEDIG) fixation preference test. Test-retest reliability and agreement between tests were evaluated with the Kappa statistic. Results There was substantial to almost perfect test-retest reliability for the distance hole-in-the-card test, new near hole-in-the-card test, convergence test, and PEDIG fixation preference test (Kappa, k=0.77, 0.62, 0.84, 0.77, respectively). In contrast, the agreement between the new near hole in the card test and the other three tests – distance hole in the card, near convergence, and PEDIG fixation preference– was moderate to slight (k=0.41, 0.19, 0.11, respectively). Agreement was moderate to fair (k=0.47, 0.32) between the distance hole in the card test and the near convergence test, and between the distance-hole-in-the-card test and the PEDIG fixation preference test. Agreement was fair (k=0.27) between the near convergence test and the PEDIG fixation preference test. Conclusions Although there was excellent test-retest reliability of each ocular dominance test, there was only moderate to slight agreement between tests. Results of ocular dominance tests seem to vary depending on both the testing distance and the specific activity performed as part of the testing procedure.

Rice, Melissa L.; Leske, David A.; Smestad, Christina E.; Holmes, Jonathan M.

2008-01-01

155

Experimental Estimates of the Impacts of Class Size on Test Scores: Robustness and Heterogeneity  

ERIC Educational Resources Information Center

|Proponents of class size reductions (CSRs) draw heavily on the results from Project Student/Teacher Achievement Ratio to support their initiatives. Adding to the political appeal of these initiative are reports that minority and economically disadvantaged students received the largest benefits from smaller classes. We extend this research in two…

Ding, Weili; Lehrer, Steven F.

2011-01-01

156

EVALUATION OF THE ROBUSTNESS OF THE FATHEAD MINNOW, PIMEPHALES PROMELAS, LARVAL SURVIVAL AND GROWTH TEST, U.S. EPA METHOD 1000.0  

EPA Science Inventory

An intralaboratory study was conducted to evaluate the robustness of the Fathead Minnow (Pimephales promelas) Larval Survival and Growth Test, Method 1000.0 Toxicity tests were conducted with the reference toxicants hexavalent chromium (Cr6+) and copper (Cu), and the data were st...

157

Reporting Test Results to the Public: Exploring the Doughnut.  

ERIC Educational Resources Information Center

|This paper examines some of the issues involved in releasing test results to the press. The first part is based on a survey of National Association of Test Directors members (72 of the 142 members completed a questionnaire on reporting test results to the public). The survey included the following: to whom are results reported; what kind of…

Perlman, Carole L.

158

Mathematics Placement Test: Typical Results with Unexpected Outcomes  

ERIC Educational Resources Information Center

Based on the results of a prior case-study analysis of mathematics placement at one university, the mathematics department developed and piloted a mathematics placement test. This article describes the implementation process for a mathematics placement test and further analyzes the test results for the pilot group. As an unexpected result, the…

Ingalls, Victoria

2011-01-01

159

Mathematics Placement Test: Typical Results with Unexpected Outcomes  

ERIC Educational Resources Information Center

|Based on the results of a prior case-study analysis of mathematics placement at one university, the mathematics department developed and piloted a mathematics placement test. This article describes the implementation process for a mathematics placement test and further analyzes the test results for the pilot group. As an unexpected result, the…

Ingalls, Victoria

2011-01-01

160

CAVITATION TESTING RESULTS FOR A TORTUOUS PATH CONTROL VALVE  

Microsoft Academic Search

Testing results for a control valve of the tortuous path design type employing right angle turns and multiple paths are pre- sented. The results indicate that noise and vibration are so low that normally used testing methods are not applicable. Test results show the unique behavior of this type of flow path in its ability to minimize cavitation activity.

William J. Rahmeyer; Herbert L Miller; Sanjay V. Sherikar

161

Acurex Solar Corporation modular industrial solar retrofit qualification test results  

Microsoft Academic Search

Under the Department of Energy's Modular Industrial Solar Retrofit project, industrial process steam systems incorporating line-focus solar thermal collectors were designed and hardware was installed and tested. This report describes the test results for the system designed by Acurex Solar Corporation. The test series included function and safety tests to determine that the system operated as specified, an unattended operations

C. P. Cameron; V. E. Dudley

1986-01-01

162

Acurex Solar Corporation Modular Industrial Solar Retrofit qualification test results  

Microsoft Academic Search

Under the Department of Energy's Modular Industrial Solar Retrofit project, industrial process steam systems incorporating line-focus solar thermal collectors were designed and hardware was installed and tested. This report describes the test results for the system designed by Acurex Solar Corporation. The test series included function and safety tests to determine that the system operated as specified, an unattended operations

C. P. Cameron; V. E. Dudley

1987-01-01

163

Effects of Testing Conditions on Conceptual Survey Results  

ERIC Educational Resources Information Center

|Pre-testing and post-testing is a commonly used method in Physics Education Research to assess student learning gains. It is well recognized in the community that timings and incentives in delivering conceptual tests can impact test results. However, it is difficult to control these variables across different studies. As a common practice, a…

Ding, Lin; Reay, Neville W.; Lee, Albert; Bao, Lei

2008-01-01

164

Physical separations soil washing system cold test results  

Microsoft Academic Search

This test summary describes the objectives, methodology, and results of a physical separations soil-washing system setup and shakedown test using uncontaminated soil. The test is being conducted in preparation for a treatability test to be conducted in the North Pond of the 300-FF-1 Operable Unit. It will be used to assess the feasibility of using a physical separations process to

McGuire

1993-01-01

165

Analytical Evaluation of Preliminary Drop Tests Performed to Develop a Robust Design for the Standardized DOE Spent Nuclear Fuel Canister  

SciTech Connect

The Department of Energy (DOE) has developed a design concept for a set of standard canisters for the handling, interim storage, transportation, and disposal in the national repository, of DOE spent nuclear fuel (SNF). The standardized DOE SNF canister has to be capable of handling virtually all of the DOE SNF in a variety of potential storage and transportation systems. It must also be acceptable to the repository, based on current and anticipated future requirements. This expected usage mandates a robust design. The canister design has four unique geometries, with lengths of approximately 10 feet or 15 feet, and an outside nominal diameter of 18 inches or 24 inches. The canister has been developed to withstand a drop from 30 feet onto a rigid (flat) surface, sustaining only minor damage - but no rupture - to the pressure (containment) boundary. The majority of the end drop-induced damage is confined to the skirt and lifting/stiffening ring components, which can be removed if de sired after an accidental drop. A canister, with its skirt and stiffening ring removed after an accidental drop, can continue to be used in service with appropriate operational steps being taken. Features of the design concept have been proven through drop testing and finite element analyses of smaller test specimens. Finite element analyses also validated the canister design for drops onto a rigid (flat) surface for a variety of canister orientations at impact, from vertical to 45 degrees off vertical. Actual 30-foot drop testing has also been performed to verify the final design, though limited to just two full-scale test canister drops. In each case, the analytical models accurately predicted the canister response.

A.G. Ware; D.K. Morton; N.L. Smith; S.D. Snow; T.E. Rahl

1999-08-01

166

Evaluation of the geomorphometric results and residual values of a robust plane fitting method applied to different DTMs of various scales and accuracy  

NASA Astrophysics Data System (ADS)

Due to the need for quantitative analysis of various geomorphological landforms, the importance of fast and effective automatic processing of the different kind of digital terrain models (DTMs) is increasing. The robust plane fitting (segmentation) method, developed at the Institute of Photogrammetry and Remote Sensing at Vienna University of Technology, allows the processing of large 3D point clouds (containing millions of points), performs automatic detection of the planar elements of the surface via parameter estimation, and provides a considerable data reduction for the modeled area. Its geoscientific application allows the modeling of different landforms with the fitted planes as planar facets. In our study we aim to analyze the accuracy of the resulting set of fitted planes in terms of accuracy, model reliability and dependence on the input parameters. To this end we used DTMs of different scales and accuracy: (1) artificially generated 3D point cloud model with different magnitudes of error; (2) LiDAR data with 0.1 m error; (3) SRTM (Shuttle Radar Topography Mission) DTM database with 5 m accuracy; (4) DTM data from HRSC (High Resolution Stereo Camera) of the planet Mars with 10 m error. The analysis of the simulated 3D point cloud with normally distributed errors comprised different kinds of statistical tests (for example Chi-square and Kolmogorov-Smirnov tests) applied on the residual values and evaluation of dependence of the residual values on the input parameters. These tests have been repeated on the real data supplemented with the categorization of the segmentation result depending on the input parameters, model reliability and the geomorphological meaning of the fitted planes. The simulation results show that for the artificially generated data with normally distributed errors the null hypothesis can be accepted based on the residual value distribution being also normal, but in case of the test on the real data the residual value distribution is often mixed or unknown. The residual values are found to be dependent on two input parameters (standard deviation and maximum point-plane distance both defining distance thresholds for assigning points to a segment) mainly and the curvature of the surface affected mostly the distributions. The results of the analysis helped to decide which parameter set is the best for further modelling and provides the highest accuracy. With these results in mind the success of quasi-automatic modelling of the planar (for example plateau-like) features became more successful and often provided more accuracy. These studies were carried out partly in the framework of TMIS.ascrea project (Nr. 2001978) financed by the Austrian Research Promotion Agency (FFG); the contribution of ZsK was partly funded by Campus Hungary Internship TÁMOP-424B1.

Koma, Zsófia; Székely, Balázs; Dorninger, Peter; Kovács, Gábor

2013-04-01

167

Drug and Alcohol Testing Results. 1997 Annual Report.  

National Technical Information Service (NTIS)

The Drug and Alcohol Testing Results 1997 Annual Report is a compilation and analysis of mass transit drug and alcohol testing reported by transit systems in the United States during 1997. The report covers testing results for the following drug types: ma...

D. F. Nicholas R. Anderson M. Redington E. Rutyna A. Tallon

1998-01-01

168

12 CFR 252.156 - Reports of stress test results.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Reports of stress test results. 252.156 Section 252...STANDARDS (REGULATION YY) Company-Run Stress Test Requirements for Banking Organizations...Covered Companies § 252.156 Reports of stress test results. (a) Reports to...

2013-01-01

169

Drug and Alcohol Testing Results 2004 Annual Report.  

National Technical Information Service (NTIS)

This is the 10th annual report of the results of the Federal Transit Administrations (FTA) Drug and Alcohol Testing Program. This report summarizes the reporting requirements for calendar year 2004, the requirements of the overall drug and alcohol testing...

M. Redington E. Rutyna N. Grace F. Shanahan

2006-01-01

170

Results from the 2008 Drug and Alcohol Testing Survey.  

National Technical Information Service (NTIS)

This report summarizes the results of the 2008 Federal Motor Carrier Safety Administration Drug and Alcohol Testing Survey. This annual survey measures the percentage of drivers with commercial drivers licenses who test positive for controlled substances ...

M. A. Khan

2010-01-01

171

Drug and Alcohol Testing Results. 1996 Annual Report.  

National Technical Information Service (NTIS)

The report is a compilation and analysis of mass transit drug and alcohol testing reported by transit systems in the United States during 1996. The report covers testing results for the following drug types: marijuana (THC), cocaine, phencyclidine (PCP), ...

J. Ault B. Center R. David S. Michener G. Wilson

1997-01-01

172

49 CFR 199.229 - Reporting of alcohol testing results.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Reporting of alcohol testing results. 199.229 Section 199.229...TRANSPORTATION (CONTINUED) PIPELINE SAFETY DRUG AND ALCOHOL TESTING Alcohol Misuse Prevention Program § 199.229...

2012-10-01

173

Current single event effect test results for candidate spacecraft electronics  

Microsoft Academic Search

We present both proton and heavy ion single event effect (SEE) ground test results for candidate spacecraft electronics. A variety of digital and analog devices were tested, including EEPROMs, DRAMs, and DC-DC converters

Kenneth A. LaBel; Amy K. Moran; Donald K. Hawkins; Anthony B. Sanders; Christina M. Seidleck; Hak S. Kim; James E. Forney; E. G. Stassinopoulos; Paul Marshall; Cheryl Dale; J. Kinnison; B. Carkhuff

1996-01-01

174

Single event effect test results for candidate spacecraft electronics  

Microsoft Academic Search

We present both heavy ion and proton single event effect (SEE) ground test results for candidate spacecraft electronics. A variety of digital, analog, and fiber optic devices were tested, including DRAMs, FPGAs and fiber links

Kenneth A. Label; Amy K. Moran; Christina M. Seidleck; E. G. Stassinopoulos; J. M. Barth; P. Marshall; M. Carts; C. Marshall; J. Kinnison; B. Carkhuff

1997-01-01

175

Test results of the DOE\\/Sandia 17 meter VAWT  

Microsoft Academic Search

A review is given of the test program of a 17 meter Vertical Axis Wind Turbine VAWT. Performance test results are discussed including difficulties encountered during the VAWT operation along with ways of solving these problems.

R. O. Nellums; M. H. Worstell

1979-01-01

176

49 CFR 219.605 - Positive drug test results; procedures.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Positive drug test results; procedures. 219.605 Section...DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Random Alcohol and Drug Testing Programs § 219.605 Positive drug...

2012-10-01

177

49 CFR 219.605 - Positive drug test results; procedures.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Positive drug test results; procedures. 219.605 Section...DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Random Alcohol and Drug Testing Programs § 219.605 Positive drug...

2011-10-01

178

Effects of testing conditions on conceptual survey results  

NSDL National Science Digital Library

Pre-testing and post-testing is a commonly used method in Physics Education Research to assess student learning gains. It is well recognized in the community that timings and incentives in delivering conceptual tests can impact test results. However, it is difficult to control these variables across different studies. As a common practice, a pre-test is often administered either at or near the beginning of a course, while a post-test can be given either at or near the end of a course. Also, in conducting such tests there often is no norm as to whether incentives should be offered to students. Because these variations can significantly affect test results, it is important to study and document their impact. We analyzed five years of data that were collected at The Ohio State University from over 2100 students, who took both the pre-test and post-test of the Conceptual Survey of Electricity and Magnetism under various timings and incentives. We observed that the actual time frame for giving a test has a marked effect on the test results and that incentive granting also has a significant influence on test outcomes. These results suggest that one should carefully monitor and document the conditions under which tests are administered.

Ding, Lin; Reay, Neville W.; Lee, Albert; Bao, Lei

2008-09-22

179

Acurex Solar Corporation Modular Industrial Solar Retrofit qualification test results  

SciTech Connect

Under the Department of Energy's Modular Industrial Solar Retrofit project, industrial process steam systems incorporating line-focus solar thermal collectors were designed and hardware was installed and tested. This report describes the test results for the system designed by Acurex Solar Corporation. The test series included function and safety tests to determine that the system operated as specified, an unattended operations test to demonstrate automatic operation, performance tests to provide a database for predicting system performance, and life cycle tests to evaluate component and maintenance requirements. Component-level modifications to improve system performance and reliability were also evaluated.

Cameron, C.P.; Dudley, V.E.

1987-04-01

180

Acurex Solar Corporation modular industrial solar retrofit qualification test results  

SciTech Connect

Under the Department of Energy's Modular Industrial Solar Retrofit project, industrial process steam systems incorporating line-focus solar thermal collectors were designed and hardware was installed and tested. This report describes the test results for the system designed by Acurex Solar Corporation. The test series included function and safety tests to determine that the system operated as specified, an unattended operations test to demonstrate automatic operation, performance tests to provide a database for predicting system performance, and life cycle tests to evaluate component and maintenance requirements. Component-level modifications to improve system performance and reliability were also evaluated.

Cameron, C.P.; Dudley, V.E.

1986-10-01

181

Ground Based Test Results for Broad Band LIDAR  

NASA Astrophysics Data System (ADS)

Our team of personnel from Northrop Grumman Aerospace Systems (NGAS) and Goddard Space Flight Center (GSFC) is developing two new lidar systems for column CO2 measurement based on an innovative new lidar technique using a Fabry-Perot based detector and a broadband laser source which replaces the narrow band laser commonly used. Our lidar is capable of mitigating inaccuracy associated with atmospherically induced variations in CO2 absorption line shape and strength and reduces the number of individual different wavelength lasers required from three or more to only one.It also reduces the requirement for source wavelength stability, instead putting this responsibility on the Fabry-Perot based receiver. There is a great need for measurements of atmospheric carbon dioxide concentration with high spatial and temporal resolution for global and regional studies of the carbon cycle. Such measurements will better resolve the linkage between global warming and anthropogenic CO2 emissions. In the Decadal Survey of Earth Science the National Research Council recommended that NASA develop, build, and fly a laser based system for precision measurement of total carbon dioxide column (the ASCENDS mission). The mission demands measurements of CO2 to a precision of 1 ppm out of the total ~400 ppm column in order to locate sources and sinks. Achieving this 400:1 precision is made more difficult due to the strong dependence on changes in atmospheric pressure and temperature of atmospheric carbon dioxide absorption line position, shape, and strength. Most lidar systems currently under development for remote sensing of atmospheric CO2 require multiple lasers operating at different, very narrow bandwidth wavelengths in order to resolve these effects. Our approach requires only a single laser and the wavelength stability requirements are much less stringent than those for the multiple laser approaches. Since 2007 GSFC has been developing a lidar using their broadband detection scheme and a 1.57 ?m superluminescent light emitting diode (SLED) amplified by an optical parametric amplifier (OPA). In 2008 NGAS, leveraging expertise in thulium (Tm) fiber laser systems and recognizing the merit of the broadband approach, suggested a partnership with GSFC to develop a broadband lidar operating at 2.05 ?m. Such a system takes advantage of the broad Tm-fiber gain spectrum and the inherent mechanical robustness, compact size, simple power scalability, efficiency and high beam quality offered by fiber lasers. In early 2010 NGAS completed development of a laboratory level, highly efficient, Tm-fiber laser that produces a specially formatted pulsed broadband output around 2.05 ?m, a spectral region where CO2 has strong atmospheric absorption features. NGAS has loaned this tunable 2.05 ?m laser to GSFC which had concurrently developed a 2.05 ?m lidar sensor/receiver. In May 2010 the two systems were tested together to provide proof of concept of 2.05 µm broadband detection of CO2. This presentation will present results of ground based testing of the 1.57 ?m and the 2.05 ?m systems and discuss their potential application as space borne sensors for the ASCENDS mission.

Heaps, W. S.; Georgieva, E.; Huang, W.; Baldauf, B.; McComb, T.

2010-12-01

182

Drug and Alcohol Testing Results 1999 Annual Report.  

National Technical Information Service (NTIS)

The Drug and Alcohol Testing Results 1999 Annual Report is a compilation and analysis of drug and alcohol testing results reported by transit systems in the United States during 1999. The report covers results for the following drug types: marijuana (THC)...

R. Anderson B. Baker M. Redington E. Rutyna

2000-01-01

183

Drug and Alcohol Testing Results 2000 Annual Report.  

National Technical Information Service (NTIS)

The Drug and Alcohol Testing Results 2000 Annual Report is a compilation and analysis of drug and alcohol testing results reported by transit systems in the United State during 2000. The report covers results for the following drug types: marijuana (THC),...

R. Anderson B. Baker R. Buchanan S. Chen R. Clarke

2001-01-01

184

Results of W-87\\/Mk21 Deployment Separation Shock Tests  

Microsoft Academic Search

This report summarizes results of the W-87\\/Mk21 Deployment Separation Shock Tests conducted at the Survivability and Vulnerability Integration Center (SVIC) Hill Air Force Base in Ogden, Utah, from 10\\/5\\/98 to 10\\/8\\/98. Specific details regarding the test plan and procedures can be found in the Master Test Plan listed in the references.

C. A. Avalle

1999-01-01

185

TEST RESULTS FOR FUEL-CELL OPERATION ON LANDFILL GAS  

EPA Science Inventory

Test results from a demonstration of fuel-cell (FC) energy recovery and control of landfill gas emissions are presented. The project addressed two major issues: (i) the design, construction, and testing of a landfill-gas cleanup system; and (ii) a field test of a commercial phos...

186

Preliminary test results of prototype urban maglev train  

Microsoft Academic Search

The Urban Maglev Program is a unique type of R&D project in the sense that it is a combination of R&D project and construction project. The prototype maglev vehicles of commercialization model were built and have been under various tests on the test track. The preliminary test results of the maglev vehicles show that the performances including powering and braking,

Byung Chun Shin

2010-01-01

187

EDD-7 Electric Charge Point Meter test results  

SciTech Connect

The results of tests evaluating the electric switching portion of the EDD-7 Electric Charge Point Meter (ECPM) are presented. The ECPM is a modified parking meter that allows the purchase of 120 or 240 volt electric power. The ECPM is designed to make electricity available at any vehicle parking location. The test results indicate that the ECPM operated without failure thru a series of over current and ground fault tests at three different test temperatures. The magnitude of current required to trip the over current protection circuitry varied with temperature while the performance of the ground fault interruption circuitry did not change significantly with the test temperature.

Mersman, C.R.

1993-09-01

188

Robust reinforcement learning.  

PubMed

This letter proposes a new reinforcement learning (RL) paradigm that explicitly takes into account input disturbance as well as modeling errors. The use of environmental models in RL is quite popular for both offline learning using simulations and for online action planning. However, the difference between the model and the real environment can lead to unpredictable, and often unwanted, results. Based on the theory of H(infinity) control, we consider a differential game in which a "disturbing" agent tries to make the worst possible disturbance while a "control" agent tries to make the best control input. The problem is formulated as finding a min-max solution of a value function that takes into account the amount of the reward and the norm of the disturbance. We derive online learning algorithms for estimating the value function and for calculating the worst disturbance and the best control in reference to the value function. We tested the paradigm, which we call robust reinforcement learning (RRL), on the control task of an inverted pendulum. In the linear domain, the policy and the value function learned by online algorithms coincided with those derived analytically by the linear H(infinity) control theory. For a fully nonlinear swing-up task, RRL achieved robust performance with changes in the pendulum weight and friction, while a standard reinforcement learning algorithm could not deal with these changes. We also applied RRL to the cart-pole swing-up task, and a robust swing-up policy was acquired. PMID:15720771

Morimoto, Jun; Doya, Kenji

2005-02-01

189

Robust techniques for signal processing - A survey  

Microsoft Academic Search

A survey which focuses on minimax robust signal-processing schemes is examined. Although key results of other robust statistical procedures are considered, the emphasis is on the contributions made in robust signal processing. It is shown that robustness formulations take two basic forms: robustness with respect to uncertain second-order statistical properties (spectral properties) of signals of noise and robustness with respect

S. A. Kassam; H. V. Poor

1985-01-01

190

Celiac Disease: Are Endomysial Antibody Test Results Being Used Appropriately?  

Microsoft Academic Search

Background: The aim of this study was to retrospec- tively examine how positive IgA-endomysial antibody (EMA) test results for celiac disease were being inter- preted and acted on by physicians in the Calgary Health Region. Methods: We reviewed consecutive EMA test results, with or without a serum IgA, obtained during a 17- month period. Seropositive tests were cross-referenced to the

Kelly E. McGowan; Martha E. Lyon; Steven D. Loken; J. Decker Butzner

2007-01-01

191

DBSQC Chemical Test Results Memorandum - MenHibrix  

Center for Biologics Evaluation and Research (CBER)

... Food and Drug Administration Center for Biologics Evaluation and Research ... DBSQC, OCBQ, HFM-680 Subject: DBSQC Chemical Test Results for ... More results from www.fda.gov/biologicsbloodvaccines/vaccines/approvedproducts

192

Results of Detailed Hydrologic Characterization Tests - Fiscal Year 2002  

SciTech Connect

This report provides the results of detailed hydrologic characterization tests conducted within newly constructed Hanford Site wells during FY 2002. Results from the tests provide hydrologic information that supports the needs of RCRA waste management characterization and sitewide groundwater monitoring and modeling programs and reduces the uncertainty of groundwater flow conditions at selected Hanford locations.

Spane, Frank A.; Newcomer, Darrell R.; Thorne, Paul D.

2003-03-10

193

Results of Detailed Hydrologic Characterization Tests - Fiscal Year 2001  

SciTech Connect

This report provides the results of detailed hydrologic characterization tests conducted within newly constructed Hanford Site wells during fiscal year 2001. Results obtained from these tests provide hydrologic information that supports the needs of RCRA waste management area characterization and sitewide groundwater monitoring and modeling programs.

Spane, Frank A.; Thorne, Paul D.; Newcomer, Darrell R.

2002-12-03

194

Estimating the robustness of questionnaire results: lessons from a mixed-mode survey of expectations for tele-working and road-based business travel  

Microsoft Academic Search

The robustness of questionnaire results to various forms of bias are explored in the context of a dual-mode (web and hardcopy)\\u000a survey of employers’ anticipations of levels of employee commuting and business travel activity under a range of future ICT\\u000a scenarios. The questionnaire incorporated several innovative features which, together with the dual-mode format, allowed an\\u000a unusually wide range of analyses.

Peter Bonsall; Jeremy Shires

2009-01-01

195

Results of Detailed Hydrologic Characterization Tests - Fiscal Year 2000  

SciTech Connect

This report provides the results of detailed hydrologic characterization tests conducted within eleven Hanford Site wells during fiscal year 2000. Detailed characterization tests performed included groundwater-flow characterization; barometric response evaluation; slug tests; single-well tracer tests; constant-rate pumping tests; and in-well, vertical flow tests. Hydraulic property estimates obtained from the detailed hydrologic tests include transmissivity; hydraulic conductivity; specific yield; effective porosity; in-well, lateral flow velocity; aquifer-flow velocity; vertical distribution of hydraulic conductivity (within the well-screen section); and in-well, vertical flow velocity. In addition, local groundwater-flow characteristics (i.e., hydraulic gradient and flow direction) were determined for four sites where detailed well testing was performed.

Spane, Frank A; Thorne, Paul D; Newcomer, Darrell R

2001-05-15

196

Early results of gate valve flow interruption blowdown tests  

SciTech Connect

The preliminary results of the USNRC/INEL high-energy BWR line break flow interruption testing are presented. Two representative nuclear valve assemblies were cycled under design basis Reactor Water Cleanup pipe break conditions to provide input for the technical basis for resolving the Nuclear Regulatory Commission's Generic Issue 87. The effects of the blowdown hydraulic loadings on valve operability, especially valve closure stem forces, were studied. The blowdown tests showed that, given enough thrust, typical gate valves will close against the high flow resulting from a line break. The tests also showed that proper operator sizing depends on the correct identification of values for the sizing equation. Evidence exists that values used in the past may not be conservative for all valve applications. The tests showed that improper operator lock ring installation following test or maintenance can invalidate in-situ test results and prevent the valve from performing its design function. 2 refs., 12 figs., 2 tabs.

DeWall, K.G.

1988-01-01

197

Three principal results from recent Fenton Hill flow testing  

SciTech Connect

Results of recent flow testing at Fenton Hill, New Mexico, have been examined in light of their applicability to the development of commercial-scale hot dry rock (HDR) reservoirs at other sites. These test results, obtained during the cumulative 11 months of reservoir flow testing between 1992 and 1995, show that there was no significant production temperature drawdown during this time and that the reservoir flow became more dispersed as flow testing proceeded. Based on these test results together with previous HDR research at Fenton Hill and elsewhere, it is concluded that a three-well geometry, with one centrally located injection well and two production wells -- one at each end of the pressure-stimulated reservoir region -- would provide a much more productive system for future HDR development than the two-well system tested at Fenton Hill.

Brown, D. [Los Alamos National Lab., NM (United States); DuTeaux, R. [Stanford Univ., CA (United States)

1997-01-01

198

Test Results of a Nb3Sn Wind/React"Stress-Managed" Block Dipole  

SciTech Connect

A second phase of a high field dipole technology development has been tested. A Nb{sub 3}Sn block-coil model dipole was fabricated, using magnetic mirror geometry and wind/react coil technology. The primary objective of this phase was to make a first experimental test of the stress-management strategy pioneered at Texas A&M. In this strategy a high-strength support matrix is integrated with the windings to intercept Lorentz stress from the inner winding so that it does not accumulate in the outer winding. The magnet attained a field that was consistent with short sample limit on the first quench; there was no training. The decoupling of Lorentz stress between inner and outer windings was validated. In ramp rate studies the magnet exhibited a remarkable robustness in rapid ramping operation. It reached 85% of short sample(ss) current even while ramping 2-3 T/s. This robustness is attributed to the orientation of the Rutherford cables parallel to the field in the windings, instead of the transverse orientation that characterizes common dipole designs. Test results are presented and the next development phase plans are discussed.

McInturff, A.; Blackburn, R.; Diaczenko, N.; Elliott, T.; Henchel, W.; Jaisle, A.; McIntyre, P.; Noyes, P.; Sattarov, A.; Lietzke, A.; Hafalia Jr., R.; Lau, W.; Nyman, M.; Bish, P.

2007-06-01

199

Performance test results for the Eaton dc development power train in an electric test bed vehicle  

Microsoft Academic Search

This report presents the results of the tests performed on a direct current (dc) power train in a test bed vehicle developed by the Eaton Corporation for the U.S. Department of Energy (DOE). The tests were performed by EG and G Idaho, Inc. at the Idaho National Engineering Laboratory (INEL). The purpose of the INEL testing was to provide test

R. L. Crumley; M. R. Donaldson

1987-01-01

200

Performance test results for the Eaton dc developmental power train in an electric test bed vehicle  

Microsoft Academic Search

This report presents the results of the tests performed on a direct current (dc) power train in a test bed vehicle developed by the Eaton Corporation for the US Department of Energy (DOE). The tests were performed by EG and G Idaho, Inc. at the Idaho National Engineering Laboratory (INEL). The purpose of the INEL testing was to provide test

R. L. Crumley; M. R. Donaldson

1987-01-01

201

Results of the Centralia underground coal gasification field test  

SciTech Connect

The Centralia Partial Seam CRIP (PSC) test described herein is the second test conducted at this site. The first test was done in the fall and winter of 1981 to 1982 when the Large Block (LBK) tests were successfully completed at the Centralia, Washington site. The LBK tests consisted of five small scale experiments in which approximately 900 to 1800 cubic feet (25 to 50 cubic meters) of coal were affected in each test. The LBK tests indicated that the Centralia site was a reasonable candidate for UCG. The PSC test was then conceived along with a third test, the Full Seam CRIP test, to provide the technical data needed to further evaluate the economic potential of UCG at the Centralia site, as well as enhance our general knowledge concerning the UCG process. The PSC test represents a 20 to 30 fold increase in scale over the LBK tests with the full-seam test representing another five fold increase in size. This series of three tests have become known as the Tono Basin Tests. During the active gasification phase, which lasted 30 days, 1400 cubic meters (2000 tons) of coal were affected. The test utilized primarily steam and oxygen as the injected reactants. Three distinct periods of gasification were observed. The initial period in which the vertical production well was in use which yielded a typical dry gas heating value of 219 kJ/mol (248 Btu/scf). This period was followed by a period of considerably higher gas quality, 261 kJ/mol (296 Btu/scf), which resulted from the switch to the slant production well and the CRIP maneuver. The final period began when a large-scale underground roof fall occurred and the typical dry gas heating value fell to 194 kJ/mol (220 Btu/scf). 7 references, 11 figures, 3 tables.

Hill, R.W.; Thorsness, C.B.; Cena, R.J.; Stephens, D.R.

1984-08-01

202

Reporting Test Results to the School Board. Using and Reporting Test Results, Monograph #5. Steps in the Right Direction!  

ERIC Educational Resources Information Center

|This is the fifth in a series of six monographs developed to help local educators use and report Michigan Educational Assessment Program (MEAP) test results. An organized plan facilitates the important task of reporting test results to the school board quickly and accurately. This monograph gives one approach that enables the staff to take the…

Caswell, Martha S.; Roeber, Edward D.

203

Argon Spill Duct Bellows Leak Test Procedures and Results  

Microsoft Academic Search

This engineering note describes the testing of the argoll spill duct bellows. It includes a detailed explanation of the procedures, along with a summary of the results of the testing done on 2\\/18\\/91 and 2\\/19\\/91 by Gary Trotter. The original bellows were purchased from Expansion Joint Systems (see Appendix 2). The general conclusion from the testing was that the leaks

G. R. Trotter; J. Wu

1991-01-01

204

Psychometric Foundations for the Interpretation of Neuropsychological Test Results  

Microsoft Academic Search

\\u000a The purpose of this chapter is to illustrate how an understanding of the psychometric properties of tests, normative samples,\\u000a and test scores are an essential foundation for meaningful and accurate clinical interpretations and reduces the likelihood\\u000a of misinterpreting test results. Our goal is to present this information in an easy-to-understand format that facilitates\\u000a clinicians’ knowledge of basic psychometrics in the

Brian L. Brooks; Elisabeth M. S. Sherman; Grant L. Iverson; Daniel J. Slick; Esther Strauss

205

B-52B/Dtv (Drop Test Vehicle) Flight Test Results: Drop Test Missions.  

National Technical Information Service (NTIS)

The NASA test airplane, B-52B-008, was a carrier for drop tests of the shuttle booster recovery parachute system. The purpose of the test support by Boeing was to monitor the vertical loads on the pylon hooks. The hooks hold the Drop Test Vehicle to the B...

L. J. Doty

1985-01-01

206

Evaluation of LOINC for Representing Constitutional Cytogenetic Test Result Reports  

PubMed Central

Genetic testing is becoming increasingly important to medical practice. Integrating genetics and genomics data into electronic medical records is crucial in translating genetic discoveries into improved patient care. Information technology, especially Clinical Decision Support Systems, holds great potential to help clinical professionals take full advantage of genomic advances in their daily medical practice. However, issues relating to standard terminology and information models for exchanging genetic testing results remain relatively unexplored. This study evaluates whether the current LOINC standard is adequate to represent constitutional cytogenetic test result reports using sample result reports from ARUP Laboratories. The results demonstrate that current standard terminology is insufficient to support the needs of coding cytogenetic test results. The terminology infrastructure must be developed before clinical information systems will be able to handle the high volumes of genetic data expected in the near future.

Heras, Yan Z.; Mitchell, Joyce A.; Williams, Marc S.; Brothman, Arthur R.; Huff, Stanley M.

2009-01-01

207

Robust matched filters  

Microsoft Academic Search

Two general aspects of the problem of designing robust matched filters for situations in which there is uncertainty in the signal structure or noise statistics are examined. First, maximum robust designs are evaluated for a general Hilbert-space formulation of the matched filtering problem and explicit solutions are obtained for two intuitively appealing models for uncertainty. Second, the theoretical maximum results

Harold Vincent Poor

1983-01-01

208

Some varieties of robustness  

Microsoft Academic Search

It is widely believed that robustness (of inferences, measurements, models, phenomena and relationships discovered in empirical investigation etc.) is a Good Thing. However, there are many different notions of robustness. These often differ both in their normative credentials and in the conditions that warrant their deployment. Failure to distinguish among these notions can result in the uncritical transfer of considerations

Jim Woodward

2006-01-01

209

Test results for SEU and SEL immune memory circuits  

Microsoft Academic Search

Test results for three SEU logic\\/circuit hardened CMOS memory circuits verify upset and latch-up immunity for two configurations to be in excess of 120 MeV cm(exp 2)\\/mg using a commercial, non-radiation hardened CMOS process. Test chips from three separate fabrication runs in two different process were evaluated.

D. Wiseman; J. Canaris; S. Whitaker; J. Gambles; K. Arave; L. Arave

1993-01-01

210

The Reliability of Results from National Curriculum Testing in England  

ERIC Educational Resources Information Center

Background: National curriculum tests have been administered in England for well over a decade. Although reliability evidence has been published, critics have argued that there is not enough evidence (of the right kind) and that test results may be insufficiently reliable. Purpose: This article collates and discusses evidence on the reliability of…

Newton, Paul E.

2009-01-01

211

Social context of disclosing HIV test results in Tanzania  

Microsoft Academic Search

This study sought to understand how individuals reveal their HIV test results to others and the ways in which social relations affect the disclosure process. The data were collected through open-ended interviews administered in Swahili to informants who had just been tested for HIV and to those who were living with HIV in Dar es Salaam and Iringa regions. Analysis

Joe Lugalla; Stanley Yoder; Huruma Sigalla; Charles Madihi

2011-01-01

212

Microgravity two-phase flow experiment and test results  

Microsoft Academic Search

A two-phase flow system was tested in the NASA KC-135 reduced gravity test facility. Its innovative flow configuration results in an unusual ease of control and significantly reduced power and heat rejection requirements, while permitting flow regimes, pressure drops, and boiling and condensing heat transfer to be examined. Numerous design features were incorporated that minimize the impact of the KC-135

Wayne S. Hill; Frederick R. Best

1991-01-01

213

RTG performance on Galileo and Ulysses and Cassini test results  

SciTech Connect

Power output from telemetry for the two Galileo RTGs are shown from the 1989 launch to the recent Jupiter encounter. Comparisons of predicted, measured and required performance are shown. Similar comparisons are made for the RTG on the Ulysses spacecraft which completed its planned mission in 1995. Also presented are test results from small scale thermoelectric modules and full scale converters performed for the Cassini program. The Cassini mission to Saturn is scheduled for an October 1997 launch. Small scale module test results on thermoelectric couples from the qualification and flight production runs are shown. These tests have exceeded 19,000 hours are continuing to provide increased confidence in the predicted long term performance of the Cassini RTGs. Test results are presented for full scale units both ETGs (E-6, E-7) and RTGs (F-2, F-5) along with mission power predictions. F-5, fueled in 1985, served as a spare for the Galileo and Ulysses missions and plays the same role in the Cassini program. It has successfully completed all acceptance testing. The ten years storage between thermal vacuum tests is the longest ever experienced by an RTG. The data from this test are unique in providing the effects of long term low temperature storage on power output. All ETG and RTG test results to date indicate that the power requirements of the Cassini spacecraft will be met. BOM and EOM power margins of at least five percent are predicted.

Kelly, C. Edward; Klee, Paul M. [Lockheed Martin Corporation P.O. Box 8555, 29B41-KB, Philadelphia, Pennsylvania 19101 (United States)

1997-01-10

214

RTG performance on Galileo and Ulysses and Cassini test results  

SciTech Connect

Power output from telemetry for the two Galileo RTGs are shown from the 1989 launch to the recent Jupiter encounter. Comparisons of predicted, measured and required performance are shown. Similar comparisons are made for the RTG on the Ulysses spacecraft which completed its planned mission in 1995. Also presented are test results from small scale thermoelectric modules and full scale converters performed for the Cassini program. The Cassini mission to Saturn is scheduled for an October 1997 launch. Small scale module test results on thermoelectric couples from the qualification and flight production runs are shown. These tests have exceeded 19,000 hours are continuing to provide increased confidence in the predicted long term performance of the Cassini RTGs. Test results are presented for full scale units both ETGs (E-6, E-7) and RTGs (F-2, F-5) along with mission power predictions. F-5, fueled in 1985, served as a spare for the Galileo and Ulysses missions and plays the same role in the Cassini program. It has successfully completed all acceptance testing. The ten years storage between thermal vacuum tests is the longest ever experienced by an RTG. The data from this test are unique in providing the effects of long term low temperature storage on power output. All ETG and RTG test results to date indicate that the power requirements of the Cassini spacecraft will be met. BOM and EOM power margins of at least five percent are predicted. {copyright} {ital 1997 American Institute of Physics.}

Kelly, C.E.; Klee, P.M. [Lockheed Martin Corporation P.O. Box 8555, 29B41-KB, Philadelphia, Pennsylvania19101 (United States)

1997-01-01

215

Results of acoustic tests of a Prop-Fan model  

Microsoft Academic Search

Results of acoustic tests in a low speed open jet anechoic wind tunnel are presented for a counter rotation Prop-Fan model. The model tested had 5 front and 5 rear rotor blades with swept planform. Noise spectra are presented showing the influence of operating and configuration variables such as: (1) power absorption, (2) tip speed, (3) rotor-rotor spacing, (4) power

F. B. Metzger; P. C. Brown

1987-01-01

216

Swine influenza test results from animal health laboratories in Canada.  

PubMed

Due to its infrastructure and partnerships the Canadian Animal Health Surveillance Network was able to rapidly collect test results from 9 Canadian laboratories that were conducting primary testing for influenza on swine-origin samples, in response to the threat posed by the pandemic H1N1 influenza virus in 2009. PMID:24155436

Kloeze, Harold; Mukhi, Shamir N; Alexandersen, Soren

2013-05-01

217

Minimally invasive metabolic testing for malignant hyperthermia susceptibility: a systematic review of the methodology and results.  

PubMed

Importance of the field: Malignant hyperthermia (MH) is a potentially lethal hypermetabolic syndrome that develops in susceptible individuals exposed to volatile anesthetics or depolarizing neuromuscular blocking agents. Because genetic screening is successful only in 30 - 50% of all suspected cases, contracture testing following an open muscle biopsy is performed to diagnose MH susceptibility. Two different protocols exist, the in vitro contracture test (IVCT) for Europe and the caffine halothane contracture test for the US. As replacement for the IVCT, an in vivo metabolic test might allow an equal discrimination of MH susceptible individuals. In this systematic review, all available metabolic testing methods are analyzed. What the reader will gain: The reader will gain insight in methods and results of alternative approaches to diagnose MH. Areas covered in this review: Relevant studies involving in vivo metabolic testing were systematically searched (Medline) and reviewed. Their ability to discriminate MH susceptible individuals was analyzed and compared. Any systemic or local side effects were documented and evaluated in order to allow more robust conclusions based on larger sample sizes than the single trials. Take home message: All discussed study protocols allowed an adequate discrimination of MH susceptible individuals. The latest study protocol reaches a specificity of 79% with a sensitivity of 100%. No severe systemic or local adverse effects could be seen in the pooled analysis. Minimally invasive metabolic testing is a promising novel approach to diagnose MH. Further multi-center studies have to be conducted to optimize the results in order to replace the IVCT. PMID:23484448

Metterlein, Thomas; Schuster, Frank; Kranke, Peter; Roewer, Norbert; Anetseder, Martin

2010-03-01

218

Results of no-flow rotary drill bit comparison testing  

SciTech Connect

This document describes the results of testing of a newer rotary sampling bit and sampler insert called the No-Flow System. This No-Flow System was tested side by side against the currently used rotary bit and sampler insert, called the Standard System. The two systems were tested using several ''hard to sample'' granular non-hazardous simulants to determine which could provide greater sample recovery. The No-Flow System measurably outperformed the Standard System in each of the tested simulants.

WITWER, K.S.

1998-11-30

219

Drug and Alcohol Testing Results 2003 Annual Report.  

National Technical Information Service (NTIS)

This is the eighth annual report of the results of the Federal Transit Administrations (FTA) Drug and Alcohol Testing Program. The report summarizes the new reporting requirements introduced for calendar year 2003, the requirements of the overall drug and...

R. Clarke R. Gaumer M. Redington E. Rutyna

2005-01-01

220

Interpreting Results from the Standardized UXO Test Sites.  

National Technical Information Service (NTIS)

The Institute for Defense Analyses (IDA) was tasked by the Strategic Environmental Research and Development Program (SERDP) and the Environmental Security Technology Certification Program (ESCTP) to complete a detailed analysis of the results of testing c...

M. May M. Tuley

2007-01-01

221

Results of the Locust Pesticide Testing Trials in Sudan.  

National Technical Information Service (NTIS)

The technical report discusses the results of locust pesticide testing trials in the Sudan. Six pesticides were used against the desert locust (Schistocerca gregaria). The pesticides were: bendiocarb, carbaryl, chlorpyrifos, fenitrothion, lambda-cyhalothr...

1988-01-01

222

Drug and Alcohol Testing Results 2002 Annual Report.  

National Technical Information Service (NTIS)

This is the seventh annual report of the results of the Federal Transit Administrations (FTA) Drug and Alcohol Testing Program. The report summarizes the new reporting requirements introduced for calendar year 2001, the requirements of the overall drug an...

R. Clarke R. Gaumer M. Redington E. Rutyna

2005-01-01

223

Drug and Alcohol Testing Results 2001 Annual Report.  

National Technical Information Service (NTIS)

This is the sixth annual report of the results of the Federal Administration's Drug and Alcohol Testing Program. The report summarizes the new reporting requirements introduced for calendar year 2001, the requirements of the overall drug and alcohol testi...

R. Clarke R. Gaumer E. Rutyna M. Redington

2003-01-01

224

Results from the BABAR electromagnetic calorimeter beam test  

Microsoft Academic Search

We present results from the PSI test beam run for the electromagnetic calorimeter of the BABAR experiment. A system of 25 CsI(Tl) crystals was tested with electrons and pions in the momentum range from 100 to 405MeV\\/c. Results are presented on crystal light output, on coherent and incoherent noise, on energy resolution and on spatial resolution. The design energy resolutions

Roger J. Barlow; Roland Bernet; Christopher K. Bowdery; Jens Brose; Theresa Champion; Gerd Dahlinger; Paul Dauncey; Peter Eckstein; Gerald Eigen; Dietrich Freytag; John Fry; Neil I. Geddes; Vladimir Ivanchenko; Colin Jessop; Damian Johnson; Mary King; Eckart Lorenz; Helmut Marsiske; Steve McMahon; Howard Nicholson; Jim Reidy; Rafe Schindler; Klaus R. Schubert; Rainer Schwierz; Iain Scott; Reiner Seitz; Zurab Silagadze; Bernhard Spaan; David P. Stoker; Edward Tetteh-Lartey; Roland Waldi; William J. Wisniewski; Craig R. Wuest

1999-01-01

225

Test results for the High Dynamics Instrumentation Set  

NASA Astrophysics Data System (ADS)

The GPS Range Applications Program requires accurate time-space-position information (TSPI) for the triservice test and training ranges. To meet this requirement, a family of GPS-user equipments has been developed which includes the High Dynamics Instrumentation Set (HDIS). This paper presents the evaluation of initial test results of HDIS from static and dynamic field runs. The results show that the HDIS meets or exceeds all TSPI performance requirements within the ability of the truth source to measure accuracy.

Kaatz, Greg; Kido, Tom; Richmond, Carlton; Snow, Robert

226

Delta undulator model: Magnetic field and beam test results  

SciTech Connect

A novel type of in-vacuum Elliptical Polarization Undulator (EPU) magnet optimized for linac beam (Delta undulator) was developed at the Laboratory for Elementary-Particle Physics (LEPP) at Cornell University as part of insertion device development for the future Cornell 5 GeV Energy Recovery Source of coherent hard X-rays [1,7]. To evaluate mechanical, vacuum and magnetic properties of the magnet, a short 30 cm model with a 5 mm diameter round gap and a 2.4 cm period was built and tested in LEPP. The beam test of the Delta undulator model was conducted at Accelerator Test Facility (ATF) in BNL with {approx}60 MeV linac beam. The beam testing results confirmed basic properties of the undulator magnet obtained through the magnetic field measurement. In the paper we describe the magnet design, techniques and setups used for the magnetic field measurement and the beam testing results.

Temnykh A.; Babzien M.; Davis, D.; Fedurin, M.; Kusche, K.; Park, J.; Yakimenko, V.

2010-11-10

227

Low-energy demonstration accelerator (LEDA) test results and plans  

SciTech Connect

The LEDA 75-keV injector and 6.7-MeV RFQ have been tested with pulsed and cw proton beam currents up to 100 mA. Several LINAC2000 papers give the results of those measurements. A follow-on experiment, to intentionally introduce and measure beam halo on the RFQ output beam, is reported in several papers at this conference (PAC2001). In this paper we summarize the LEDA RFQ commissioning results and the beam-halo measurements and we discuss future test plans for this high-current, high-average-power rf structures test bed.

Smith, H. V. (Horace V.); Schneider, J. D. (J. David); Sheffield, R. L. (Richard L.)

2001-01-01

228

DETERMINING A ROBUST D-OPTIMAL DESIGN FOR TESTING FOR DEPARTURE FROM ADDITIVITY IN A MIXTURE OF FOUR PFAAS  

EPA Science Inventory

Our objective was to determine an optimal experimental design for a mixture of perfluoroalkyl acids (PFAAs) that is robust to the assumption of additivity. Of particular focus to this research project is whether an environmentally relevant mixture of four PFAAs with long half-liv...

229

Determining a Robust D-Optimal Design for Testing for Departure from Additivity in a Mixture of Four Perfluoroalkyl Acids.  

EPA Science Inventory

Our objective is to determine an optimal experimental design for a mixture of perfluoroalkyl acids (PFAAs) that is robust to the assumption of additivity. PFAAs are widely used in consumer products and industrial applications. The presence and persistence of PFAAs, especially in ...

230

Two degrees of freedom PID multi-controllers to design a mathematical driver model: experimental validation and robustness tests  

Microsoft Academic Search

This paper proposes a mathematical driver model based on PID multi-controllers having two degrees of freedom. Each PID controller making up this model is synthesised by the Ziegler–Nichols oscillation method, using the linear time invariant models which are obtained around their nominal operating points. Different PID controllers are combined using nonlinear optimisation and the H? constraint. To demonstrate its robustness,

Lghani Menhour; Daniel Lechner; Ali Charara

2011-01-01

231

LIMESTONE WET-SCRUBBING TEST RESULTS AT THE EPA ALKALI SCRUBBING TEST FACILITY. CAPSULE REPORT  

EPA Science Inventory

This capsule report discusses the highlights of the first detailed engineering progress report. It describes the test facility and test program and presents results to date of the limestone wet-scrubbing testing. In addition, the realiability and operability of the test facility ...

232

Reproducibility of in vitro contracture test results in patients tested for malignant hyperthermia susceptibility  

Microsoft Academic Search

Background: The in vitro contracture test (IVCT) is the golden standard to diagnose malignant hyperthermia susceptibility (MHS). A high reproducibility is important for a high validity of a test. Methods: We have therefore analyzed IVCT in 838 patients, in- vestigated in two laboratories. Each halothane and caffeine test was performed in two muscle strips. The test results were ana- lyzed

G. ISLANDER; H. Ö RDING; D. B ENDIXEN; E. RANKLEV TWETMAN

233

Performance test results for the EATON AC3 developmental powertrain in an electric test bed vehicle  

Microsoft Academic Search

The purpose of the INEL testing was to provide test results from which an evaluation of the performance capabilities of the Eaton ac powertrain could be made and compared with other electric vehicle propulsion systems. The major portion of the testing involved the use of a chassis dynamometer to simulate the road load losses of the test bed vehicle. Road

Heiselmann

1986-01-01

234

Cold vacuum drying proof of performance (first article testing) test results  

SciTech Connect

This report presents and details the test results of the first of a kind process referred to as Cold Vacuum Drying (CVD). The test results are compiled from several months of testing of the first process equipment skid and ancillary components to de-water and dry Multi-Canister Overpacks (MCO) filled with Spent Nuclear Fuel (SNF). The tests results provide design verifications, equipment validations, model validation data, and establish process parameters.

MCCRACKEN, K.J.

1999-06-23

235

Indeterminate and discrepant rapid HIV test results in couples' HIV testing and counselling centres in Africa  

PubMed Central

Background Many HIV voluntary testing and counselling centres in Africa use rapid antibody tests, in parallel or in sequence, to establish same-day HIV status. The interpretation of indeterminate or discrepant results between different rapid tests on one sample poses a challenge. We investigated the use of an algorithm using three serial rapid HIV tests in cohabiting couples to resolve unclear serostatuses. Methods Heterosexual couples visited the Rwanda Zambia HIV Research Group testing centres in Kigali, Rwanda, and Lusaka, Zambia, to assess HIV infection status. Individuals with unclear HIV rapid antibody test results (indeterminate) or discrepant results were asked to return for repeat testing to resolve HIV status. If either partner of a couple tested positive or indeterminate with the screening test, both partners were tested with a confirmatory test. Individuals with indeterminate or discrepant results were further tested with a tie-breaker and monthly retesting. HIV-RNA viral load was determined when HIV status was not resolved by follow-up rapid testing. Individuals were classified based on two of three initial tests as "Positive", "Negative" or "Other". Follow-up testing and/or HIV-RNA viral load testing determined them as "Infected", "Uninfected" or "Unresolved". Results Of 45,820 individuals tested as couples, 2.3% (4.1% of couples) had at least one discrepant or indeterminate rapid result. A total of 65% of those individuals had follow-up testing and of those individuals initially classified as "Negative" by three initial rapid tests, less than 1% were resolved as "Infected". In contrast, of those individuals with at least one discrepant or indeterminate result who were initially classified as "Positive", only 46% were resolved as "Infected", while the remainder was resolved as "Uninfected" (46%) or "Unresolved" (8%). A positive HIV serostatus of one of the partners was a strong predictor of infection in the other partner as 48% of individuals who resolved as "Infected" had an HIV-infected spouse. Conclusions In more than 45,000 individuals counselled and tested as couples, only 5% of individuals with indeterminate or discrepant rapid HIV test results were HIV infected. This represented only 0.1% of all individuals tested. Thus, algorithms using screening, confirmatory and tie-breaker rapid tests are reliable with two of three tests negative, but not when two of three tests are positive. False positive antibody tests may persist. HIV-positive partner serostatus should prompt repeat testing.

2011-01-01

236

Esd Robustness And Scaling Implications Of Aluminum And Copper Interconnects In Advanced Semiconductor Technology  

Microsoft Academic Search

ESD testing results of aluminum and copper interconnect wires and vias for advanced semiconductor technologies demonstrate that interconnects will be a limiting failure mechanism in the future for ESD robustness of semiconductor chips. Comparison of copper and aluminum interconnect and via ESD robustness and failure mechanisms will be shown. Results demonstrate an improvement in the ESD robustness of a Cu-based

Steven H. Voldman

1997-01-01

237

Preimplantation genetic haplotyping: 127 diagnostic cycles demonstrating a robust, efficient alternative to direct mutation testing on single cells  

Microsoft Academic Search

Preimplantation genetic diagnosis using whole genome amplification and a haplotyping approach (PGH) was first described in 2006 and suggested as an efficient alternative to single-cell PCR for monogenic disorders. DNA from single cells was amplified using multiple displacement amplification; the resulting products were then tested using disease-specific PCR multiplexes applied under standard laboratory conditions to determine the haplotypes in the

Pamela Renwick; Jane Trussler; Alison Lashwood; Peter Braude; Caroline Mackie Ogilvie

2010-01-01

238

Proposed Interventions to Decrease the Frequency of Missed Test Results  

ERIC Educational Resources Information Center

|Numerous studies have identified that delays in diagnosis related to the mishandling of abnormal test results are an import contributor to diagnostic errors. Factors contributing to missed results included organizational factors, provider factors and patient-related factors. At the diagnosis error conference continuing medical education…

Wahls, Terry L.; Cram, Peter

2009-01-01

239

Steel Containment Vessel Model Test: Results and Evaluation  

SciTech Connect

A high pressure test of the steel containment vessel (SCV) model was conducted on December 11-12, 1996 at Sandia National Laboratories, Albuquerque, NM, USA. The test model is a mixed-scaled model (1:10 in geometry and 1:4 in shell thickness) of an improved Mark II boiling water reactor (BWR) containment. A concentric steel contact structure (CS), installed over the SCV model and separated at a nominally uniform distance from it, provided a simplified representation of a reactor shield building in the actual plant. The SCV model and contact structure were instrumented with strain gages and displacement transducers to record the deformation behavior of the SCV model during the high pressure test. This paper summarizes the conduct and the results of the high pressure test and discusses the posttest metallurgical evaluation results on specimens removed from the SCV model.

Costello, J.F.; Hashimote, T.; Hessheimer, M.F.; Luk, V.K.

1999-03-01

240

Statistical analysis of Salmonella test data and comparison to results of animal cancer tests  

Microsoft Academic Search

Summary A quantitative framework for the analysis of results of the Salmonella (Ames) test is presented, and the relationship between mutagenesis and carcinogenesis is examined. Color graphics are used for the Salmonella data to describe variability, and trends across multiple chemicals and test conditions. Positivity in the Salmonella test, using statistical criteria to classify results, is compared to positivity in

Joyce McCann; L SWIRSKYGOLD; Laura Horn; R. McGill; T. E. Graedel; John Kaldor

1988-01-01

241

A robustness study of parametric and non-parametric tests in model-based multifactor dimensionality reduction for epistasis detection  

PubMed Central

Background Applying a statistical method implies identifying underlying (model) assumptions and checking their validity in the particular context. One of these contexts is association modeling for epistasis detection. Here, depending on the technique used, violation of model assumptions may result in increased type I error, power loss, or biased parameter estimates. Remedial measures for violated underlying conditions or assumptions include data transformation or selecting a more relaxed modeling or testing strategy. Model-Based Multifactor Dimensionality Reduction (MB-MDR) for epistasis detection relies on association testing between a trait and a factor consisting of multilocus genotype information. For quantitative traits, the framework is essentially Analysis of Variance (ANOVA) that decomposes the variability in the trait amongst the different factors. In this study, we assess through simulations, the cumulative effect of deviations from normality and homoscedasticity on the overall performance of quantitative Model-Based Multifactor Dimensionality Reduction (MB-MDR) to detect 2-locus epistasis signals in the absence of main effects. Methodology Our simulation study focuses on pure epistasis models with varying degrees of genetic influence on a quantitative trait. Conditional on a multilocus genotype, we consider quantitative trait distributions that are normal, chi-square or Student’s t with constant or non-constant phenotypic variances. All data are analyzed with MB-MDR using the built-in Student’s t-test for association, as well as a novel MB-MDR implementation based on Welch’s t-test. Traits are either left untransformed or are transformed into new traits via logarithmic, standardization or rank-based transformations, prior to MB-MDR modeling. Results Our simulation results show that MB-MDR controls type I error and false positive rates irrespective of the association test considered. Empirically-based MB-MDR power estimates for MB-MDR with Welch’s t-tests are generally lower than those for MB-MDR with Student’s t-tests. Trait transformations involving ranks tend to lead to increased power compared to the other considered data transformations. Conclusions When performing MB-MDR screening for gene-gene interactions with quantitative traits, we recommend to first rank-transform traits to normality and then to apply MB-MDR modeling with Student’s t-tests as internal tests for association.

2013-01-01

242

Robustness Tests of a Model Based Predictive Control Strategy for Depth of Anesthesia Regulation in a Propofol to Bispectral Index Framework  

Microsoft Academic Search

\\u000a This paper verifies the robustness of a model based predictive control scheme for depth of anesthesia (DOA) regulation. The\\u000a manipulated variable is Propofol, which is used in a Model based Predictive Control (MPC) algorithm for automatic induction\\u000a and control of DOA. In turn, DOA is evaluated by means of the Bispectral index (BIS). The simulation tests are performed on\\u000a a

C. M. Ionescu; I. Nascu; R. Keyser

243

Wellbore inertial navigation system (WINS) software development and test results  

SciTech Connect

The structure and operation of the real-time software developed for the Wellbore Inertial Navigation System (WINS) application are described. The procedure and results of a field test held in a 7000-ft well in the Nevada Test Site are discussed. Calibration and instrumentation error compensation are outlined, as are design improvement areas requiring further test and development. Notes on Kalman filtering and complete program listings of the real-time software are included in the Appendices. Reference is made to a companion document which describes the downhole instrumentation package.

Wardlaw, R. Jr.

1982-09-01

244

Results of irradiated cladding tests and clad plate experiments  

Microsoft Academic Search

Two aspects critical to the fracture behavior of three-wire stainless steel cladding were investigated by the Heavy-Section Steel Technology (HSST) Program: (1) radiation effects on cladding strength and toughness, and (2) the response of mechanically loaded, flawed structures in the presence of cladding (clad plate experiments). Postirradiation testing results show that, in the test temperature range from \\/minus\\/125 to 288\\/degree\\/C,

F. M. Haggag; S. K. Iskander

1988-01-01

245

Results of benchmark tests for different numerical BPM algorithms  

NASA Astrophysics Data System (ADS)

Key results of a benchmark test, initiated in 1992 by the Working Group 2 of COST Project 240 at a modelling workshop in Teupitz, Germany, are presented. A great number of algorithms--FFT-BPM, various types of FD-BPM, wide angle approximations, adaptive FE- BPM and MoL-BPM--are compared. The quasi-analytic character of the benchmark tests provides a deeper insight into the absolute accuracy of algorithms.

Nolting, Hans P.; Maerz, Reinhard

1994-08-01

246

DWPF Sampling Device Development Test Results and Design Recommendation  

SciTech Connect

This report summarizes the development and testing of a sample device for the DWPF sample cells. The clamp actuated manual Hydraguard valve used in conjunction with the concentric needle fill device is recommended for use in the DWPF. This is based on test results which indicate that this sampler is capable of obtaining samples within five percent of the solids concentration of the process stream at flow rates from 0.5 to 3.5 gpm.

Wilds, G.W.

2001-07-17

247

Physical separations soil washing system cold test results  

SciTech Connect

This test summary describes the objectives, methodology, and results of a physical separations soil-washing system setup and shakedown test using uncontaminated soil. The test is being conducted in preparation for a treatability test to be conducted in the North Pond of the 300-FF-1 Operable Unit. It will be used to assess the feasibility of using a physical separations process to reduce the volume of contaminated soils in the 300-FF-1 Operable Unit. The test is described in DOE-RL (1993). The setup test was conducted at an uncontrolled area located approximately 3.2 km northwest of the 300-FF-1 Operable Unit. The material processed was free of contamination. The physical separation equipment to be used in the test was transferred to the US Department of Energy (DOE) by the US Environmental Protection Agency (EPA) Risk Reduction Engineering Laboratory. On May 13, 1993, soil-washing equipment was moved to the cold test location. Design assistance and recommendation for operation was provided by the EPA.

McGuire, J.P.

1993-07-28

248

Bell Pole CROW pilot test results and evaluation  

SciTech Connect

Beginning in 1990, efforts were initiated to implement an in situ remediation project to address the creosote and pentachlorophenol (PCP) contaminated surficial aquifer at the Bell Lumber and Pole Company (Bell Pole) Site. The remediation project involves the application of the Contained Recovery of Oily Wastes (CROW[trademark]) process which consists of hot-water injection to displace and recover the non-aqueous phase liquids (NAPL). Based on the results from the pilot test the following conclusions can be made: (1) The pilot test provided sufficient hydraulic information to design the full-scale CROW remediation system. The pumping test portion of the pilot test indicated uniform aquifer properties. The entire thickness of the aquifer reached the target temperature range and containment of the injected hot water was achieved. (2) Pretest injection and production rate predictions were achieved. (3) The post test soil boring data indicated hot-water injection displaced greater than 80% of the NAPL near the injection well. The data indicates that a NAPL saturation of approximately 19% (pore volume basis) and a 500 fold decrease in PCP concentration can be achieved with 20 pore volumes of flushing. (4) The treatment system used during the pilot test was effective in reducing PCP and PAH compounds to concentrations acceptable for sanitary sewer discharge. (5) The microbial assay of the post test samples found an encouraging increase in microbial population compared to earlier data collected before the pilot test.

Fahy, L.J.; Johnson, L.A. Jr. (Western Research Inst., Laramie, WY (United States)); Sola, D.V.; Horn, S.G.; Christofferson, J.L. (Conestoga-Rovers and Associates Limited, St. Paul, MN (United States))

1992-01-01

249

Bell Pole CROW pilot test results and evaluation  

SciTech Connect

Beginning in 1990, efforts were initiated to implement an in situ remediation project to address the creosote and pentachlorophenol (PCP) contaminated surficial aquifer at the Bell Lumber and Pole Company (Bell Pole) Site. The remediation project involves the application of the Contained Recovery of Oily Wastes (CROW{trademark}) process which consists of hot-water injection to displace and recover the non-aqueous phase liquids (NAPL). Based on the results from the pilot test the following conclusions can be made: (1) The pilot test provided sufficient hydraulic information to design the full-scale CROW remediation system. The pumping test portion of the pilot test indicated uniform aquifer properties. The entire thickness of the aquifer reached the target temperature range and containment of the injected hot water was achieved. (2) Pretest injection and production rate predictions were achieved. (3) The post test soil boring data indicated hot-water injection displaced greater than 80% of the NAPL near the injection well. The data indicates that a NAPL saturation of approximately 19% (pore volume basis) and a 500 fold decrease in PCP concentration can be achieved with 20 pore volumes of flushing. (4) The treatment system used during the pilot test was effective in reducing PCP and PAH compounds to concentrations acceptable for sanitary sewer discharge. (5) The microbial assay of the post test samples found an encouraging increase in microbial population compared to earlier data collected before the pilot test.

Fahy, L.J.; Johnson, L.A. Jr. [Western Research Inst., Laramie, WY (United States); Sola, D.V.; Horn, S.G.; Christofferson, J.L. [Conestoga-Rovers and Associates Limited, St. Paul, MN (United States)

1992-11-01

250

Thermal analysis of low layer density multilayer insulation test results  

NASA Astrophysics Data System (ADS)

Investigation of the thermal performance of low layer density multilayer insulations is important for designing long-duration space exploration missions involving the storage of cryogenic propellants. Theoretical calculations show an analytical optimal layer density. However, the appropriate test data by which to evaluate these calculations have been only recently obtained. As part of a recent research project, NASA procured several multilayer insulation test articles for calorimeter testing. These blanket-type test articles were configured to allow a layer density variation from 0.5 to 2.5 layers per millimeter. The coupon testing was completed by the Cryogenics Test Laboratory at Kennedy Space Center using the cylindrical Cryostat-100 apparatus. The results show insulation properties as a function of layer density for multiple points. Overlaying these new results with data from the literature reveals an optimum layer density; however, the value is approximately twice as high as predicted. The data also show that the transition region between high vacuum and no vacuum is dependent on the spacing of the reflective layers. These results aid in the understanding of the performance parameters of MLI and help to complete the body of literature on the topic.

Johnson, Wesley

2012-06-01

251

Advanced Tactical Air Reconnaissance System development test and evaluation RF-4C final flight test results  

NASA Astrophysics Data System (ADS)

Sverdrup Technology Inc., provided technical, engineering, and analytical support for a limited development test and evaluation (DT&E) of the advanced tactical air reconnaissance system (ATARS) at Eglin Air Force Base, Florida. The 46th Electronic Combat Test Squadron, reconnaissance and imaging sensors test flight (46 ECTS/OGER) conducted the test from 12 February to 4 October 1993. This paper presents an overview of the sensor performance test results from this limited DT&E. Detailed results are presented in the U.S. Air Force Development Test Center technical report.

Minor, John L.

1994-10-01

252

Biogas plasticization coupled anaerobic digestion: batch test results.  

PubMed

Biogas has unique properties for improving the biodegradability of biomass solids during anaerobic digestion (AD). This report presents batch test results of the first investigation into utilizing biogas plasticization to "condition" organic polymers during active digestion of waste activated sludge (WAS). Preliminary design calculations based on polymer diffusion rate limitation are presented. Analysis of the 20 degrees C batch test data determined the first order (k(1)) COD conversion coefficient to be 0.167 day(-1) with a maximum COD utilization rate of 11.25 g L(-1) day(-1). Comparison of these batch test results to typical conventional AD performance parameters showed orders of magnitude improvement. These results show that biogas plasticization during active AD could greatly improve renewable energy yields from biomass waste materials such as MSW RDF, STP sludges, food wastes, animal manure, green wastes, and agricultural crop residuals. PMID:17054122

Schimel, Keith A

2007-06-01

253

Multiplexer/amplifier test results for SP-100  

SciTech Connect

Multiplexer and amplifier systems must be designed with transistors that can perform satisfactorily over ten years to a total gamma dose of 120E6 rads and a total neutron fluence of 1.6E15 nvt for the SP-100 reactor system. Series of gamma and neutron tests have been completed to measure transistor degradation as a function of total dose, fluence, and temperature. Test results indicate that modest increases in temperature result in substantial improvement of transistor performance at a neutron flux of 8E8 n/cm{sup 2}/s. 2 refs., 3 figs.

King, D.B.; Luker, S.M. (Sandia National Labs., Albuquerque, NM (USA)); Ryan, R. (General Electric Co., San Jose, CA (USA))

1990-01-01

254

Test results for 36-V Li/FeS battery  

SciTech Connect

This report describes a collaborative effort between Argonne National Laboratory (ANL) and the Westinghouse Naval System Division from 1986 to 1989. This effort resulted in the design, fabrication, and testing of two 36-V lithium-alloy/iron monosulfide (Li/FeS) batteries. The test results provided validation of a conceptual design for a full-scale electric van battery, as well as design and performance data for 12-V Li/FeS modules and fractional-scale battery components. 16 refs., 8 figs., 12 tabs.

Chilenskas, A.A.; Malecha, R.F.; DeLuca, W.H.; Tummillo, A.F.; Hogrefe, R.L.

1990-01-01

255

Large coil task and results of testing US coils  

SciTech Connect

The United States, EURATOM, Japan, and Switzerland have collaborated since 1978 in development of superconducting toroidal field coils for fusion reactor applications. The United States provided a test facility nd three coils; the other participants, one coil each. All coils have the same interface dimensions and performance requirements (stable at 8 T), but internal design was decided by each team. Two US coil teams chose bath-cooled NbTi, 10-kA conductors. One developed a Nb/sub 3/Sn conductor, cooled by internal flow, rated at 18 kA. All US coils have diagnostic instrumentation and imbedded heaters that enable stability tests and simulated nuclear heating experiments. In single-coil tests, each coil operated at full current in self-field (6.4 T). In six-coil tests that began in July 1986, one US coil and the Japanese coil hve been successfully operated at full current at 8 T. The other coils have operated as background coils while awaiting their turn as test coil. Coil tests have been informative and results gratifying. The facility has capably supported coil testing and its operation has provided information that will be useful in designing future fusion systems. Coil capabilities beyond nominal design points will be determined.

Haubenreich, P.N.

1986-01-01

256

Results of W-87/Mk21 Deployment Separation Shock Tests  

SciTech Connect

This report summarizes results of the W-87/Mk21 Deployment Separation Shock Tests conducted at the Survivability and Vulnerability Integration Center (SVIC) Hill Air Force Base in Ogden, Utah, from 10/5/98 to 10/8/98. Specific details regarding the test plan and procedures can be found in the Master Test Plan listed in the references. Test Objectives: (1) Evaluate the performance of a set of servo accelerometers during and post Re-entry Vehicle (RV) separation events. These ultra-sensitive accelerometers ({mu}g) needed operate during and after the separation shock events and these tests would serve as confirmation of proper functioning. These sensors were later flown on FrU-15, a development flight unit supporting the Instrumented High Fidelity Joint Test Assembly Program, as part of an experimental Inertial Measurement Unit (IMU) measure RV dynamics during RV mechanical separation and spin-up. (2) Measure separation shock response at the IMU accelerometer locations. (3) Measure separation shock response at locations on the warhead and RV common to locations used on MMIII separation tests conducted at LMMS Valley Forge for data comparison.

Avalle, C.A.

1999-04-21

257

Results of the Centralia underground coal gasification field test  

SciTech Connect

The Centralia Partial-Seam CRIP (controlled retracting injection point) test is described which herein is the second test conducted at this site. The first test was done in the fall and winter of 1981-82 when the Large Block (LBK) tests were successfully completed at the Centralia, Washington site. Three distinct periods of gasification were observed. The initial period in which the vertical production well was in use which yielded a typical dry gas heating value of 219 kJ/mol (248 Btu/scf). This period was followed by a period of considerably higher gas quality, 261 kJ/mol (296 Btu/scf), which resulted from the switch to the slant production well and the CRIP maneuver. The final period began when a large-scale underground roof fall occurred and the typical dry gas heating value fell to 194 kJ/mol (220 Btu/scf).

Hill, R.W.; Cena, R.J.; Stephens, D.R.; Thorsness, C.B.

1985-01-01

258

Cassini stellar reference unit: performance test approach and results  

NASA Astrophysics Data System (ADS)

The Cassini Stellar Reference Unit (SRU) is the prime attitude determination sensor on the Cassini spacecraft. It must operate continuously and reliably during both the cruise and the Saturnian tour phases of the mission. In fact, accuracy requirements are most critical toward the end of the mission, during the four years of scientific observations at Saturn. To ensure that the SRU will operate within specification for the entire mission, an extensive test program has been undertaken to characterize the SRU performance prior to launch and to quantify any expected performance degradation. Results from several complimentary test programs are presented and compared with pre-test performance predictions. Additionally, a unique approach is described for enabling closed-loop testing of the SRU with the other elements of the Cassini Attitude and Articulation Control Subsystem when no optical stimulation is available.

Thomas, Valerie C.; Blue, Randel C.; Procopio, Dorico

1996-10-01

259

The advanced receiver 2: Telemetry test results in CTA 21  

NASA Astrophysics Data System (ADS)

Telemetry tests with the Advanced Receiver II (ARX II) in Compatibility Test Area 21 are described. The ARX II was operated in parallel with a Block-III Receiver/baseband processor assembly combination (BLK-III/BPA) and a Block III Receiver/subcarrier demodulation assembly/symbol synchronization assembly combination (BLK-III/SDA/SSA). The telemetry simulator assembly provided the test signal for all three configurations, and the symbol signal to noise ratio as well as the symbol error rates were measured and compared. Furthermore, bit error rates were also measured by the system performance test computer for all three systems. Results indicate that the ARX-II telemetry performance is comparable and sometimes superior to the BLK-III/BPA and BLK-III/SDA/SSA combinations.

Hinedi, S.; Bevan, R.; Marina, M.

1991-02-01

260

Small-Scale Spray Releases: Initial Aerosol Test Results  

SciTech Connect

One of the events postulated in the hazard analysis at the Waste Treatment and Immobilization Plant (WTP) and other U.S. Department of Energy (DOE) nuclear facilities is a breach in process piping that produces aerosols with droplet sizes in the respirable range. The current approach for predicting the size and concentration of aerosols produced in a spray leak involves extrapolating from correlations reported in the literature. These correlations are based on results obtained from small engineered spray nozzles using pure liquids with Newtonian fluid behavior. The narrow ranges of physical properties on which the correlations are based do not cover the wide range of slurries and viscous materials that will be processed in the WTP and across processing facilities in the DOE complex. Two key technical areas were identified where testing results were needed to improve the technical basis by reducing the uncertainty due to extrapolating existing literature results. The first technical need was to quantify the role of slurry particles in small breaches where the slurry particles may plug and result in substantially reduced, or even negligible, respirable fraction formed by high-pressure sprays. The second technical need was to determine the aerosol droplet size distribution and volume from prototypic breaches and fluids, specifically including sprays from larger breaches with slurries where data from the literature are scarce. To address these technical areas, small- and large-scale test stands were constructed and operated with simulants to determine aerosol release fractions and generation rates from a range of breach sizes and geometries. The properties of the simulants represented the range of properties expected in the WTP process streams and included water, sodium salt solutions, slurries containing boehmite or gibbsite, and a hazardous chemical simulant. The effect of anti-foam agents was assessed with most of the simulants. Orifices included round holes and rectangular slots. The round holes ranged in size from 0.2 to 4.46 mm. The slots ranged from (width × length) 0.3 × 5 to 2.74 × 76.2 mm. Most slots were oriented longitudinally along the pipe, but some were oriented circumferentially. In addition, a limited number of multi-hole test pieces were tested in an attempt to assess the impact of a more complex breach. Much of the testing was conducted at pressures of 200 and 380 psi, but some tests were conducted at 100 psi. Testing the largest postulated breaches was deemed impractical because of the large size of some of the WTP equipment. This report presents the experimental results and analyses for the aerosol measurements obtained in the small-scale test stand. It includes a description of the simulants used and their properties, equipment and operations, data analysis methodologies, and test results. The results of tests investigating the role of slurry particles in plugging small breaches are reported in Mahoney et al. (2012). The results of the aerosol measurements in the large-scale test stand are reported in Schonewill et al. (2012) along with an analysis of the combined results from both test scales.

Mahoney, Lenna A.; Gauglitz, Phillip A.; Kimura, Marcia L.; Brown, Garrett N.; Kurath, Dean E.; Buchmiller, William C.; Smith, Dennese M.; Blanchard, Jeremy; Song, Chen; Daniel, Richard C.; Wells, Beric E.; Tran, Diana N.; Burns, Carolyn A.

2012-11-01

261

Operational Results from a High Power Alternator Test Bed  

NASA Astrophysics Data System (ADS)

The Alternator Test Unit (ATU) in the Lunar Power System Facility (LPSF) located at the NASA Glenn Research Center (GRC) in Cleveland, OH was used to simulate the operating conditions and evaluate the performance of the ATU and its interaction with various LPSF components in accordance with the current Fission Surface Power System (FSPS) requirements. The testing was carried out at the breadboard development level. These results successfully demonstrated excellent ATU power bus characteristics and rectified user load power quality during steady state and transient conditions. Information gained from this work could be used to assist the design and primary power quality considerations for a possible future FSPS. This paper describes the LPSF components and some preliminary test results.

Birchenough, Arthur; Hervol, David

2007-01-01

262

Model NbTi Helical Solenoid Fabrication and Test Results  

SciTech Connect

A program to develop model magnets for a helical cooling channel is under way at Fermilab. In the first steps of a planned sequence of magnets, two four-coil helical solenoid models with 300 mm aperture have been fabricated and tested. These two models, HSM01 and HSM02, used insulated NbTi Rutherford cable wound onto stainless steel rings with spliceless transitions between coils. Strip heaters were included for quench protection of each coil, and the coils were epoxy-impregnated after winding inside the support structures. Based on the results of the first model the second model was made using a cable with optimized cross-section, improved winding and epoxy-impregnation procedures, enhanced ground insulation, and included heat exchange tubing for a test of conduction cooling. We report on the results and lessons learned from fabrication and tests of these two models.

Andreev, N.; Barzi, E.; Chlachidze, G.; Evbota, D.; Kashikhin, V.S.; Kashikhin, V.V.; Lamm, M.J.; Makarov, A.; Novitski, I.; Orris, D.F.; Tartaglia, M.A.; /Fermilab

2011-09-01

263

GICHD mine dog testing project - soil sample results #4.  

SciTech Connect

A mine dog evaluation project initiated by the Geneva International Center for Humanitarian Demining is evaluating the capability and reliability of mine detection dogs. The performance of field-operational mine detection dogs will be measured in test minefields in Afghanistan and Bosnia containing actual, but unfused landmines. Repeated performance testing over two years through various seasonal weather conditions will provide data simulating near real world conditions. Soil samples will be obtained adjacent to the buried targets repeatedly over the course of the test. Chemical analysis results from these soil samples will be used to evaluate correlations between mine dog detection performance and seasonal weather conditions. This report documents the analytical chemical methods and results from the fourth batch of soils received. This batch contained samples from Kharga, Afghanistan collected in April 2003 and Sarajevo, Bosnia collected in May 2003.

Barnett, James L.; Phelan, James M.; Archuleta, Luisa M.; Wood, Tyson B.; Donovan, Kelly L.; Bender, Susan Fae Ann

2003-08-01

264

GICHD Mine Dog Testing Project - Soil Sample Results No.3  

SciTech Connect

A mine dog evaluation project initiated by the Geneva International Center for Humanitarian Demining is evaluating the capability and reliability of mine detection dogs. The performance of field-operational mine detection dogs will be measured in test minefields in Afghanistan and Bosnia containing actual, but unfused landmines. Repeated performance testing over two years through various seasonal weather conditions will provide data simulating near real world conditions. Soil samples will be obtained adjacent to the buried targets repeatedly over the course of the test. Chemical analysis results from these soil samples will be used to evaluate correlations between mine dog detection performance and seasonal weather conditions. This report documents the analytical chemical methods and results from the third batch of soils received. This batch contained samples from Kharga, Afghanistan collected in October 2002.

PHELAN, JAMES M.; BARNETT, JAMES L.; BENDER, SUSAN FAE ANN; ARCHULETA, LUISA M.

2003-03-01

265

GICHD mine dog testing project : soil sample results #5.  

SciTech Connect

A mine dog evaluation project initiated by the Geneva International Center for Humanitarian Demining is evaluating the capability and reliability of mine detection dogs. The performance of field-operational mine detection dogs will be measured in test minefields in Afghanistan containing actual, but unfused landmines. Repeated performance testing over two years through various seasonal weather conditions will provide data simulating near real world conditions. Soil samples will be obtained adjacent to the buried targets repeatedly over the course of the test. Chemical analysis results from these soil samples will be used to evaluate correlations between mine dog detection performance and seasonal weather conditions. This report documents the analytical chemical methods and results from the fifth batch of soils received. This batch contained samples from Kharga, Afghanistan collected in June 2003.

Barnett, James L.; Phelan, James M.; Archuleta, Luisa M.; Donovan, Kelly L.; Bender, Susan Fae Ann

2004-01-01

266

High power MHD system: Facility status and magnet test results  

Microsoft Academic Search

AEDC has been requested by the Aero Propulsion Laboratory to design, fabricate, and install facility hardware necessary to conduct tests to demonstrate the performance of high power MHD generator systems developed by AFWAL contractors. This report summarizes the AEDC effort since program inception, describes the facility under development, gives the status of each major facility component, and summarizes the results

G. L. Whitehead

1982-01-01

267

The ESA Herschel Telescope Tiger Team metrology review: test results  

Microsoft Academic Search

ESA commissioned a Tiger Team to review the discrepancy between the prediction and measurement of the telescope back focal length. A team of 16 engineers and scientists collocated at ESA's Estec facility to review the test results in the context of the mission requirements and predictions for behavior of the telescope. Extensive analysis was performed on the random and systematic

Brian E. Catanzaro; Dominic Doyle; Johannes Pfund; Nathalie Ninane; Yvette Houbrechts; Bernhard Braunecker

2008-01-01

268

Sleep Affects Concussion-Testing Results, Study Finds  

MedlinePLUS

... on this page, please enable JavaScript. Sleep Affects Concussion-Testing Results, Study Finds Athletes with the least ... Preidt Monday, July 15, 2013 Related MedlinePlus Pages Concussion Sleep Disorders SATURDAY, July 13 (HealthDay News) -- Getting ...

269

Similar Cases Retrieval from the Database of Laboratory Test Results  

Microsoft Academic Search

We proposed a suitable method to search similar cases from the laboratory test results database, whose data are basically numerical and ordinal data. We transformed raw data into ordinal ranks and into new scores lying between 0 and 1, then calculated the Mahalanobis distances as a similarity measure. We used 3000 cases of blood count data. In 100 sample cases,

Zhenjun Yang; Yasushi Matsumura; Shigeki Kuwata; Hideo Kusuoka; Hiroshi Takeda

2003-01-01

270

Similar Cases Retrieval From the Database of Laboratory Test Results  

Microsoft Academic Search

We proposed a suitable method to search similar cases from the laboratory test results database, whose data are basically numerical and ordinal data. We transformed raw data into ordinal ranks and into new scores lying between 0 and 1, then calculated the Mahalanobis distances as a similarity measure. We used 3000 cases of blood count data. In 100 sample cases,

Zhenjun Yang; Yasushi Matsumura; Shigeki Kuwata; Hideo Kusuoka; Hiroshi Takeda

2003-01-01

271

Recent results from the TESLA Test Facility (TTF)  

Microsoft Academic Search

In this paper we present recent results of the TESLA Test Facility (TTF). The most important milestone was the operation with the TESLA design current, macropulses of 800 ?s with bunches of 4 nC at a rate of 2.25 MHz. Further studies include measurements of higher order modes (HOMs) in superconducting cavities, optimization of the TTF free electron laser at

M. Huning; RWTH Aachen

2001-01-01

272

Relationships between driving simulator performance and driving test results  

Microsoft Academic Search

This article is considered relevant because: 1) car driving is an everyday and safety-critical task; 2) simulators are used to an increasing extent for driver training (related topics: training, virtual reality, human – machine interaction); 3) the article addresses relationships between performance in the simulator and driving test results–a relevant topic for those involved in driver training and the virtual

J. C. F. de Winter; S. de Groot; M. Mulder; P. A. Wieringa; J. Dankelman; J. A. Mulder

2009-01-01

273

ATLAS Transition Radiation Tracker test-beam results  

NASA Astrophysics Data System (ADS)

Several prototypes of the Transition Radiation Tracker for the ATLAS experiment at the LHC have been built and tested at the CERN SPS accelerator. Results from detailed studies of the straw-tube hit registration efficiency and drift-time measurements and of the pion and electron spectra without and with radiators are presented.

Akesson, T.; Arik, E.; Baker, K.; Baron, S.; Benjamin, D.; Bertelsen, H.; Bondarenko, V.; Bytchkov, V.; Callahan, J.; Capeans, M.; Cardiel-Sas, L.; Catinaccio, A.; Cetin, S. A.; Cwetanski, P.; Dam, M.; Danielsson, H.; Dittus, F.; Dolgoshein, B.; Dressnandt, N.; Driouichi, C.; Ebenstein, W. L.; Eerola, P.; Farthouat, P.; Fedin, O.; Froidevaux, D.; Gagnon, P.; Grichkevitch, Y.; Grigalashvili, N.; Hajduk, Z.; Hansen, P.; Kayumov, F.; Keener, P. T.; Kekelidze, G.; Khristatchev, A.; Konovalov, S.; Koudine, L.; Kovalenko, S.; Kowalski, T.; Kramarenko, V. A.; Kruger, K.; Laritchev, A.; Lichard, P.; Luehring, F.; Lundberg, B.; Maleev, V.; Markina, I.; McFarlane, K.; Mialkovski, V.; Mitsou, V. A.; Mindur, B.; Morozov, S.; Munar, A.; Muraviev, S.; Nadtochy, A.; Newcomer, F. M.; Ogren, H.; Oh, S. H.; Oleshko, S.; Olszowska, J.; Passmore, S.; Patritchev, S.; Peshekhonov, V.; Petti, R.; Price, M.; Rembser, C.; Rohne, O.; Romaniouk, A.; Rust, D. R.; Ryabov, Yu.; Schegelsky, V.; Seliverstov, D.; Shin, T.; Shmeleva, A.; Smirnov, S.; Sosnovtsev, V.; Soutchkov, V.; Spiridenkov, E.; Tikhomirov, V.; van Berg, R.; Vassilakopoulos, V.; Vassilieva, L.; Wang, C.; Williams, H. H.; Zalite, A.

2004-04-01

274

49 CFR 199.109 - Review of drug testing results.  

Code of Federal Regulations, 2010 CFR

...services as part of its anti-drug program. (b) MRO qualifications...The MRO must report all drug test results to the operator in accordance...operator, by a substance abuse professional under contract...resolving problems with drug abuse, does not...

2010-10-01

275

49 CFR 199.109 - Review of drug testing results.  

Code of Federal Regulations, 2010 CFR

...services as part of its anti-drug program. (b) MRO qualifications...The MRO must report all drug test results to the operator in accordance...operator, by a substance abuse professional under contract...resolving problems with drug abuse, does not...

2009-10-01

276

First Test Results of the New LANSCE Wire Scanner  

SciTech Connect

The Beam Diagnostics and Instrumentation Team (BDIT) at Los Alamos National Laboratory's LANSCE facility is presently developing a new and improved wire scanner diagnostics system controlled by National Instrument's cRIO platform. This paper describes the current state of development of the control system along with the results gathered from the latest actuator motion performance and accelerator-beam data acquisition tests.

Sedillo, James Daniel [Los Alamos National Laboratory

2011-01-01

277

RESULTS: INTERLABORATORY COMPARISON - BIOCONCENTRATION TESTS USING EASTERN OYSTERS  

EPA Science Inventory

The report summarizes the results of an interlaboratory comparison for bioconcentration (BCF) testing using the eastern oyster (Crassostrea virginica) and the organic chemicals pentachlorophenol (PCP), 1,2,4-trichlorobenzene (TCB), and p, p'-DDE. The means BCFs and high to low BC...

278

Communication of Advanced Test Reactor probabilistic risk assessment results.  

National Technical Information Service (NTIS)

The Advanced Test Reactor (ATR) probabilistic risk assessment (PRA) Level 1 results were efficiently communicated in two reports following the completion of revision 1 of the ATR PRA. As the ATR PRA including external events fills four large volume, it wa...

T. A. Thatcher S. A. Atkinson S. A. Eide

1992-01-01

279

Communication of Advanced Test Reactor probabilistic risk assessment results  

Microsoft Academic Search

The Advanced Test Reactor (ATR) probabilistic risk assessment (PRA) Level 1 results were efficiently communicated in two reports following the completion of revision 1 of the ATR PRA. As the ATR PRA including external events fills four large volume, it was considered impractical to expect all of the individuals at ATR who could benefit from the information to read the

T. A. Thatcher; S. A. Atkinson; S. A. Eide

1992-01-01

280

Salmonella mutagenicity tests. IV. Results from the testing of 300 chemicals  

Microsoft Academic Search

Three hundred chemicals were tested for mutagenicity, under code, in Salmonella typhimurium, using a preincubation protocol. All tests were performed in the absence of exogenous metabolic activation, and in the presence of liver S-9 from Aroclor-induced male Sprague-Dawley rats and Syrian hamsters. The results and data from these tests are presented.

Errol Zeiger; Beth Anderson; Steve Haworth; Timothy Lawlor; Kristien Mortelmans

1988-01-01

281

Autoclave Curing — Comparisons of Model and Test Results  

Microsoft Academic Search

Tests were performed measuring the temperature, ionic conductivity, and compaction in 16 to 200 ply thick graphite-epoxy laminates made of either Fiberite T300\\/976 (tape or fabric) or Hercules AS\\/3501-6 (tape). The data were compared to results calculated by the Loos-Springer CURE model. Good agreement was found between the model results and the data indicating that the model can be used

Peter R. Ciriscioli; Qiuling Wang; George S. Springer

1992-01-01

282

First results of the full-array LCT coil tests  

SciTech Connect

The international Large Coil Task (LCT) has designed, built, and is testing six different toroidal field coils. Each has a 2.5- x 3.5-m D-shaped bore, a current between 10 and 18 kA, and is designed for stable operation at 8 T. Three coils are bath-cooled; three are cooled by forced flow of helium at supercritical pressure. One uses Nb/sub 3/Sn; the others NbTi. The test coils are equipped with voltage, temperature, magnetic field, flow pressure, strain, displacement, and acoustic emission sensors sufficient for penetrating analysis of performance field. Shakedown operation of the test facility and preliminary tests of the first three coils were accomplished in 1984. Tests of the full six-coil toroidal array began early in 1986 and have progressed to the stage of design-current, design-field stability tests. Results to date have elucidated complex structural and electrical interactions in a multicoil array and provide gratifying assurance of coil performance.

Shen, S.S.; Baylor, L.R.; Clinard, J.A.; Cogswell, F.D.; Dresner, L.; Ellis, J.F.; Fietz, W.A.; Fletcher, W.M.; Haubenreich, P.N.; Herz, W.

1986-09-01

283

In-orbit test results of the first SILEX terminal  

NASA Astrophysics Data System (ADS)

The Semi conductor Inter satellite Link EXperiment, SILEX, consists of two terminals, one terminal embarked on the French LEO observation satellite SPOT4 and one terminal embarked on the ESA GEO telecommunication satellite ARTEMIS. The objective of SILEX is first to perform optical communication experiments in orbit and then on an operational basis transmit SPOT4 earth observation data to ARTEMIS, which will relay the data to ground via its Ka band feeder link. SPOT4 with the SILEX terminal was successfully launched on 22nd March 1998. While waiting for the counter terminal on ARTEMIS, a test program has been undertaken to characterize the performances without a counter terminal. The test program involves CCD calibrations, laser diode calibrations, emit/transmit co- alignment calibrations, measurement of point ahead mechanism accuracy, star acquisitions and tracking, sensitivity to sunlight, and characterization of platform/terminal dynamic interaction. The paper reports on test results of the in orbit testing, with comparison to similar ground testing and predictions. The conclusion of the test program is that the first optical communication terminal in orbit is in very good health and that the demonstrated performances are stable and considerably better than the expected.

Tolker-Nielsen, Toni; Demelenne, Benoit; Desplats, Eric

1999-04-01

284

Large-Scale Spray Releases: Initial Aerosol Test Results  

SciTech Connect

One of the events postulated in the hazard analysis at the Waste Treatment and Immobilization Plant (WTP) and other U.S. Department of Energy (DOE) nuclear facilities is a breach in process piping that produces aerosols with droplet sizes in the respirable range. The current approach for predicting the size and concentration of aerosols produced in a spray leak involves extrapolating from correlations reported in the literature. These correlations are based on results obtained from small engineered spray nozzles using pure liquids with Newtonian fluid behavior. The narrow ranges of physical properties on which the correlations are based do not cover the wide range of slurries and viscous materials that will be processed in the WTP and across processing facilities in the DOE complex. Two key technical areas were identified where testing results were needed to improve the technical basis by reducing the uncertainty due to extrapolating existing literature results. The first technical need was to quantify the role of slurry particles in small breaches where the slurry particles may plug and result in substantially reduced, or even negligible, respirable fraction formed by high-pressure sprays. The second technical need was to determine the aerosol droplet size distribution and volume from prototypic breaches and fluids, specifically including sprays from larger breaches with slurries where data from the literature are scarce. To address these technical areas, small- and large-scale test stands were constructed and operated with simulants to determine aerosol release fractions and generation rates from a range of breach sizes and geometries. The properties of the simulants represented the range of properties expected in the WTP process streams and included water, sodium salt solutions, slurries containing boehmite or gibbsite, and a hazardous chemical simulant. The effect of anti-foam agents was assessed with most of the simulants. Orifices included round holes and rectangular slots. The round holes ranged in size from 0.2 to 4.46 mm. The slots ranged from (width × length) 0.3 × 5 to 2.74 × 76.2 mm. Most slots were oriented longitudinally along the pipe, but some were oriented circumferentially. In addition, a limited number of multi-hole test pieces were tested in an attempt to assess the impact of a more complex breach. Much of the testing was conducted at pressures of 200 and 380 psi, but some tests were conducted at 100 psi. Testing the largest postulated breaches was deemed impractical because of the large size of some of the WTP equipment. The purpose of this report is to present the experimental results and analyses for the aerosol measurements obtained in the large-scale test stand. The report includes a description of the simulants used and their properties, equipment and operations, data analysis methodology, and test results. The results of tests investigating the role of slurry particles in plugging of small breaches are reported in Mahoney et al. 2012a. The results of the aerosol measurements in the small-scale test stand are reported in Mahoney et al. (2012b).

Schonewill, Philip P.; Gauglitz, Phillip A.; Bontha, Jagannadha R.; Daniel, Richard C.; Kurath, Dean E.; Adkins, Harold E.; Billing, Justin M.; Burns, Carolyn A.; Davis, James M.; Enderlin, Carl W.; Fischer, Christopher M.; Jenks, Jeromy WJ; Lukins, Craig D.; MacFarlan, Paul J.; Shutthanandan, Janani I.; Smith, Dennese M.

2012-12-01

285

Updated test results of a pumped monopropellant propulsion system  

NASA Astrophysics Data System (ADS)

Significant progress was made in 1992 and 1993 towards demonstration at the system level of a high-performance pumped monopropellant propulsion system. Two separate breadboard systems were designed, fabricated and tested with hydrazine at vacuum and sea level conditions. Both designs utilized improved warm-gas-driven reciprocating pumps to transfer fuel from a low-pressure hydrazine tank (70 psig) directly to a pair of 56-lbf thrusters operating at 580 psia chamber pressure. The system most recently tested included direct warm gas pressurization of the hydrazine tank. This novel propulsion system design has been presented and discussed in various configurations in previous papers. This paper will provide an update to test results presented in 1991. This recent testing of these latest system designs included a continuous 60-second burn of a 42-lbf thruster operating at sea level, in addition bootstrap and pulse-mode firings. These results have demonstrated that improvements to the 3-way valve design of the pump were successful, and have verified performance predictions obtained from a mathematical model of the system. Further testing of a more advanced breadboard system is planned for late 1993.

Maybee, Jeffrey C.; Swink, Don G.; Whitehead, John C.

1993-11-01

286

Results of MACE tests M0 and M1  

SciTech Connect

This document discusses the Melt Attack and Coolability Experiment (MACE) Program underway at Argonne National Laboratory under ACE/EPRI sponsorship. The program addresses the efficacy of water to terminate an accident situation if melt progression were to result in a molten core/concrete interaction (MCCI) in the reactor containment. Large-scale experiments are being conducted in parallel with related modeling efforts, involving the addition of water to an MCI already underway. The experiments utilize UO{sub 2}/ZrO{sub 2}/Zr corium mixtures, direct electrical heating for simulation of decay heating, and various types of concrete basemats. Currently the tests involve 430 kg corium mass, 25 cm depth, in a 50 cm square test section. Test MO was a successful scoping test, but the first full size test, Ml, failed to achieve melt-water contact owing to existence of a preexisting bridge crust of corium charge. A heat flux of 3.5 MW/m{sup 2} was measured in MO which removed energy from the corium pool equivalent to its entire heat of solidification prior to abatement by formation of an interfacial crust. The crust subsequently limited heat extraction to 600 kW/m{sup 2} and less. Both tests MO and Ml revealed physical evidence of large pool swelling events which resulted in extrusion (and ejection) of melt into water above the crust, significantly increasing the overall quench and reducing the remaining melt in contact with the concrete. Furthermore, test Ml provided evidence of occasional ``burst mode`` ablation events and one additional important benefit of overlying water -- aerosol capture.

Spencer, B.W.; Farmer, M.T.; Armstrong, D.R.; Kilsdonk, D.J.; Aeschlimann, R.W. [Argonne National Lab., IL (United States); Fischer, M. [Siemens AG, Berlin (Germany)

1992-04-01

287

Results of MACE tests M0 and M1  

SciTech Connect

This document discusses the Melt Attack and Coolability Experiment (MACE) Program underway at Argonne National Laboratory under ACE/EPRI sponsorship. The program addresses the efficacy of water to terminate an accident situation if melt progression were to result in a molten core/concrete interaction (MCCI) in the reactor containment. Large-scale experiments are being conducted in parallel with related modeling efforts, involving the addition of water to an MCI already underway. The experiments utilize UO{sub 2}/ZrO{sub 2}/Zr corium mixtures, direct electrical heating for simulation of decay heating, and various types of concrete basemats. Currently the tests involve 430 kg corium mass, 25 cm depth, in a 50 cm square test section. Test MO was a successful scoping test, but the first full size test, Ml, failed to achieve melt-water contact owing to existence of a preexisting bridge crust of corium charge. A heat flux of 3.5 MW/m{sup 2} was measured in MO which removed energy from the corium pool equivalent to its entire heat of solidification prior to abatement by formation of an interfacial crust. The crust subsequently limited heat extraction to 600 kW/m{sup 2} and less. Both tests MO and Ml revealed physical evidence of large pool swelling events which resulted in extrusion (and ejection) of melt into water above the crust, significantly increasing the overall quench and reducing the remaining melt in contact with the concrete. Furthermore, test Ml provided evidence of occasional burst mode'' ablation events and one additional important benefit of overlying water -- aerosol capture.

Spencer, B.W.; Farmer, M.T.; Armstrong, D.R.; Kilsdonk, D.J.; Aeschlimann, R.W. (Argonne National Lab., IL (United States)); Fischer, M. (Siemens AG, Berlin (Germany))

1992-01-01

288

Test results of the ALICE-HMPID detector commissioning  

NASA Astrophysics Data System (ADS)

The ALICE High Momentum Particle Identification Detector (HMPID) consists of seven identical proximity focusing RICH counters. It covers in total 11 m2, exploiting large area CsI photocathodes for Cherenkov light imaging. The detector is installed in the ALICE solenoid, ready for the data acquisition. By means of the Detector Control System, the Front-end (FEE) and the Readout (R/O) electronics, the MWPC high voltages, the cooling and the gas system have been tested. The HMPID module gas pressure, temperature, current and voltage trends have been monitored and archived in the ORACLE database. In this paper a comprehensive review on the test results is presented.

Volpe, G.

2008-06-01

289

Results of an integrated water recovery system test  

NASA Astrophysics Data System (ADS)

The results of an integrated advanced water recovery system test are presented. The test evaluated the ability of the system to recover potable water from human generated wastewater. Primary processing was performed by a biological water processor (BWP), which included microbial organic carbon oxidation and nitrification. The majority of inorganic contaminant removal was accomplished with reverse osmosis (RO). Water from RO brine was recovered using an air evaporation system. Ultraviolet oxidation and ion exchange polished the recovered water to potable specifications. All subsystems were designed for operation in microgravity. All water produced during the test met NASA potable water standards. Subsystem performance is summarized. The influence of subsystem performance on overall system efficiency is also discussed.

Pickering, K.; Pariani, G.; Campbell, M.; Finger, B.; Verostko, C.; Wines, K.

290

Planar pixel sensors for the ATLAS upgrade: beam tests results  

NASA Astrophysics Data System (ADS)

The performance of planar silicon pixel sensors, in development for the ATLAS Insertable B-Layer and High Luminosity LHC (HL-LHC) upgrades, has been examined in a series of beam tests at the CERN SPS facilities since 2009. Salient results are reported on the key parameters, including the spatial resolution, the charge collection and the charge sharing between adjacent cells, for different bulk materials and sensor geometries. Measurements are presented for n+-in-n pixel sensors irradiated with a range of fluences and for p-type silicon sensors with various layouts from different vendors. All tested sensors were connected via bump-bonding to the ATLAS Pixel read-out chip. The tests reveal that both n-type and p-type planar sensors are able to collect significant charge even after the lifetime fluence expected at the HL-LHC.

Weingarten, J.; Altenheiner, S.; Beimforde, M.; Benoit, M.; Bomben, M.; Calderini, G.; Gallrapp, C.; George, M.; Gibson, S.; Grinstein, S.; Janoska, Z.; Jentzsch, J.; Jinnouchi, O.; Kishida, T.; La Rosa, A.; Libov, V.; Macchiolo, A.; Marchiori, G.; Muenstermann, D.; Nagai, R.; Piacquadio, G.; Ristic, B.; Rubinskiy, I.; Rummler, A.; Takubo, Y.; Troska, G.; Tsiskaridtze, S.; Tsurin, I.; Unno, Y.; Weigell, P.; Wittig, T.

2012-10-01

291

TEST RESULTS FROM GAMMA IRRADIATION OF ALUMINUM OXYHYDROXIDES  

SciTech Connect

Hydrated metal oxides or oxyhydroxides boehmite and gibbsite that can form on spent aluminum-clad nuclear fuel assemblies during in-core and post-discharge wet storage were exposed as granular powders to gamma irradiation in a {sup 60}Co irradiator in closed laboratory test vessels with air and with argon as separate cover gases. The results show that boehmite readily evolves hydrogen with exposure up to a dose of 1.8 x 10{sup 8} rad, the maximum tested, in both a full-dried and moist condition of the powder, whereas only a very small measurable quantity of hydrogen was generated from the granular powder of gibbsite. Specific information on the test setup, sample characteristics, sample preparation, irradiation, and gas analysis are described.

Fisher, D.; Westbrook, M.; Sindelar, R.

2012-02-01

292

SP-100 Fuel Pin Performance: Results from Irradiation Testing  

NASA Astrophysics Data System (ADS)

A total of 86 experimental fuel pins with various fuel, liner, and cladding candidate materials have been irradiated in the Experimental Breeder Reactor-II (EBR-II) and the Fast Flux Test Facility (FFTF) reactor as part of the SP-100 fuel pin irradiation testing program. Postirradiation examination results from these fuel pins are key in establishing performance correlations and demonstrating the lifetime and safety of the reactor fuel system. This paper provides a brief description of the in-reactor fuel pin tests and presents the most recent irradiation data on the performance of wrought rhenium (Re) liner material and high density UN fuel at goal burnup of 6 atom percent (at. %). It also provides an overview of the significant variety of other fuel/liner/cladding combinations which were irradiated as part of this program and which may be of interest to more advanced efforts.

Makenas, Bruce J.; Paxton, Dean M.; Vaidyanathan, Swaminathan; Marietta, Martin; Hoth, Carl W.

1994-07-01

293

TEST RESULTS FOR LHC INSERTION REGION DEPOLE MAGNETS.  

SciTech Connect

The Superconducting Magnet Division at Brookhaven National Laboratory (BNL) has made 20 insertion region dipoles for the Large Hadron Collider (LHC) at CERN. These 9.45 m-long, 8 cm aperture magnets have the same coil design as the arc dipoles now operating in the Relativistic Heavy Ion Collider (RHIC) at BNL and are of single aperture, twin aperture, and double cold mass configurations. They are required to produce fields up to 4.14 T for operation at 7.56 TeV. Eighteen of these magnets have been tested at 4.5 K using either forced flow supercritical helium or liquid helium. The testing was especially important for the twin aperture models, whose construction was very different from the RHIC dipoles, except for the coil design. This paper reports on the results of these tests, including spontaneous quench performance, verification of quench protection heater operation, and magnetic field quality.

MURATORE, J.; JAIN, A.; ANERELLA, M.; COSSOLINO, J.; ET AL.

2005-05-16

294

Correlation of the results of shock-initiation tests  

SciTech Connect

Results from a variety of shock initiation and detonation propagation tests including the results from a large scale propellant initiation study have been correlated, applying a critical energy fluence criterion to pressure histories. Organization of the results shows systematic differences between pressed explosives and cast propellants. Further, the composite materials used in the large-scale propellant study must be considered as belonging to another class that differs from ideal explosives. Hydrodynamic calculations are employed to establish the precise nature of the correlation. It is shown how simple approximations can be used to evaluate shock initiation thresholds.

Weston, A.M.; Kincaid, J.F.; James, E.; Lee, E.L.; Green, L.G.; Walton, J.R.

1981-01-01

295

Small-Scale Spray Releases: Orifice Plugging Test Results  

SciTech Connect

One of the events postulated in the hazard analysis at the Waste Treatment and Immobilization Plant (WTP) and other U.S. Department of Energy (DOE) nuclear facilities, is a breach in process piping that produces aerosols with droplet sizes in the respirable range. The current approach for predicting the size and concentration of aerosols produced in a spray leak involves extrapolating from correlations published in the literature. These correlations are based on results obtained from small engineered spray nozzles using pure liquids with Newtonian fluid behavior. The narrow ranges of physical properties on which the correlations are based do not cover the wide range of slurries and viscous materials present in the WTP and across processing facilities in the DOE complex. Two key technical areas were identified where testing results were needed to improve the technical basis by reducing the uncertainty introduced by extrapolating existing literature results. The first technical need was to quantify the role of slurry particles in small breaches in which the slurry particles may plug and result in substantially reduced, or even negligible, respirable fraction formed by high pressure sprays. The second technical need was to determine the aerosol droplet size distribution and volume from prototypic breaches and fluids, specifically including sprays from larger breaches with slurries where data from the literature are largely absent. To address these technical areas, small- and large-scale test stands were constructed and operated with simulants to determine the aerosol release fractions and aerosol generation rates from a range of breach sizes and geometries. The properties of the simulants represented the range of properties expected in the WTP process streams and included water, sodium salt solutions, slurries containing boehmite or gibbsite, and a hazardous chemical simulant. The effect of anti-foam agents (AFA) was assessed with most of the simulants. Orifices included round holes and rectangular slots. Much of the testing was conducted at pressures of 200 and 380 psi, but some tests were conducted at 100 psi. Testing the largest postulated breaches was deemed impractical because of the large size of some of the WTP equipment. The purpose of the study described in this report is to provide experimental data for the first key technical area, potential plugging of small breaches, by performing small-scale tests with a range of orifice sizes and orientations representative of the WTP conditions. The simulants used were chosen to represent the range of process stream properties in the WTP. Testing conducted after the plugging tests in the small- and large-scale test stands addresses the second key technical area, aerosol generation. The results of the small-scale aerosol generation tests are included in Mahoney et al. 2012. The area of spray generation from large breaches is covered by large-scale testing in Schonewill et al. 2012.

Mahoney, Lenna A.; Gauglitz, Phillip A.; Blanchard, Jeremy; Kimura, Marcia L.; Kurath, Dean E.

2012-09-01

296

Integrated identification and robust control  

Microsoft Academic Search

A framework for integrated identification and control is presented. As part of this framework, frequency domain uncertainty bounds are derived for robust stability tests, a robust stability test for elliptical bounds is developed for SISO systems, a methodology for estimating controller performance is derived, and an optimal experiment design methodology for control-relevant identification is outlined. An example is presented to

Brian L. Cooley; Jay H. Lee

1998-01-01

297

Accelerated aging test results for aerospace wire insulation constructions  

NASA Astrophysics Data System (ADS)

Several wire insulation constructions were evaluated with and without continuous glow discharges at low pressure and high temperature to determine the aging characteristics of acceptable wire insulation constructions. It was known at the beginning of the test program that insulation aging takes several years when operated at normal ambient temperature and pressure of 20 C and 760 torr. Likewise, it was known that the accelerated aging process decreases insulation life by approximately 50% for each 10 C temperature rise. Therefore, the first phases of the program, not reported in these test results, were to select wire insulation constructions that could operate at high temperature and low pressure for over 10,000 hours with negligible shrinkage and little materials' deterioration.The final phase of the program was to determine accelerated aging characteristics. When an insulation construction is subjected to partial discharges the insulation is locally heated by the bombardment of the discharges, the insulation is also subjected to ozone and other deteriorating gas particles that may significantly increase the aging process. Several insulation systems using either a single material or combinations of teflon, kapton, and glass insulation constructions were tested. All constructions were rated to be partial discharge and/or corona-free at 240 volts, 400 Hz and 260 C (500 F) for 50, 000 hours at altitudes equivalent to the Paschen law. Minimum partial discharge aging tests were preceded by screening tests lasting 20 hours at 260 C. The aging process was accelerated by subjecting the test articles to temperatures up to 370 C (700 F) with and without partial discharges. After one month operation with continuous glow discharges surrounding the test articles, most insulation systems were either destroyed or became brittle, cracked, and unsafe for use. Time with space radiation as with partial discharges is accumulative.

Dunbar, William G.

1995-11-01

298

Test Results for a High Power Thermal Management System  

NASA Astrophysics Data System (ADS)

In response to the identified needs of emerging high power spacecraft applications, a multiple evaporator hybrid loop heat pipe (H-LHP) was developed and tested as part of a Dual Use Science and Technology (DUS&T) program co-sponsored by ATK and AFRL/PRP. During the course of the DUS&T program, a two-kilowatt system with three evaporators was developed and tested to identify viable system architectures and characterize system performance capabilities as a function of heat load profiles and spatial distribution of the evaporators. Following the successful development of the two-kilowatt system, a 10-kilowatt system with six evaporators was fabricated and tested. Tests were performed with the system operating in a totally passive mode, where applying a small amount of power to a sweepage evaporator provides the auxiliary flow through the primary evaporators, and as a self-regulating, capillary-controlled mechanically pumped system. This paper will provide a description of the 10-kilowatt multi-evaporator system and present the results of the passive and mechanically pump test programs.

Wrenn, Kimberly R.; Wolf, David A.

2008-01-01

299

Experimental Results of Integrated Refrigeration and Storage System Testing  

NASA Astrophysics Data System (ADS)

Launch operations engineers at the Kennedy Space Center have identified an Integrated Refrigeration and Storage system as a promising technology to reduce launch costs and enable advanced cryogenic operations. This system uses a closed cycle Brayton refrigerator to remove energy from the stored cryogenic propellant. This allows for control of the temperature and pressure of the fluid, and enables advanced operations such as zero boil off storage and zero loss transfer. If required, this also can serve as a propellant densification system or liquefier. However, the behavior of the fluid in this type of system is different than typical cryogenic storage systems, and there will be a learning curve associated with its use. A 400 liter research cryostat has been designed, fabricated and delivered to KSC to test the thermofluid behavior of liquid oxygen as energy is removed from the cryogen by a simulated DC cycle cryocooler. Results of the initial testing phase focusing on heat exchanger characterization and zero loss storage operations using liquid oxygen are presented in this paper. Future plans for testing of oxygen densification tests and oxygen liquefaction tests will also be discussed.

Notardonato, W. U.; Johnson, W. L.; Oliveira, J.; Jumper, K.

2010-04-01

300

Horizontal grout barrier project results of the latest testing  

SciTech Connect

Throughout United States Department of Energy (DOE) sites are situations where storage tanks and pits are leaking or have the potential to leak contamination into the soil. Subsequent leaching from rain and groundwater flow disperses the contamination far from the original site and, in some cases, into aquifers which serve as a drinking water source. Fernald Environmental Restoration Management Corporation (FERMCO) at Fernald working with the DOE Office of Technology Development (OTD) and two subcontractors, is pursuing the goal of placing a barrier beneath the contamination to prevent this dispersion. The technology being developed is an in situ approach based on directional drilling and jet grouting techniques developed in the oil fields. The unique barrier techniques being developed depend on innovative tooling and special grouts to install a horizontal barrier underground without disturbing the contaminated soils above. The initial tool designs were tested in December 1992 and were encouraging enough that the DOE agreed to fund continued development. A second set of designs were tested in August 1994. The testing results were less than expected but did provide a number of lessons learned. This paper reports on the third set of tool designs and the results of testing these tools prior to the full demonstration project at Fernald.

Riedel, K.W. [PARSONS Environmental Remedial Action Project, Fairfield, OH (United States); Ridenour, D.E. [Fernald Environmental Restoration Management Corporation, Cincinnati, OH (United States); Walker, J. [U.S. Dept. of Energy, Washington, DC (United States)

1995-03-01

301

Factory acceptance test results for the DIRSP projection optics  

NASA Astrophysics Data System (ADS)

The Factory Acceptance Test (FAT) results for the projection optical subsystem (POS) of US Army STIRCOM's dynamic infrared scene projector (DIRSP) are presented in this paper. DIRSP is a low background (-35 degrees Celsius) hardware-in-the- loop (HWIL), long-wave infrared (LWIR) scene projector built by Mission Research Corporation (MRC) for use by the Redstone Technical Test Center (RTTC). It has an effective emitter array size of 1632 X 672 suspended-membrane micro-resistor elements. The POS is responsible for generating this effective array size from three smaller arrays using a mosaic image combiner, adding background light from an external blackbody, and collimating the combined radiation with a 5:1 vacuum enclosed -35 degree Celsius zoom lens. The FAT results reported demonstrate good POS performance compared to the design for focal length, F/#, MTF and apparent temperature.

Thomas, Matthew C.; Ward, Craig S.

2000-07-01

302

Robust Facial Feature Tracking  

Microsoft Academic Search

We present a robust technique for tracking a set of pre-determined points on a human face. To achieve robustness, the Kanade-Lucas-Tomasi point tracker is extended and specialised to work on facial features by embedding knowledge about the configuration and visual characteristics of the face. The resulting tracker is designed to recover from the loss of points caused by tracking drift

Fabrice Bourel; Claude C. Chibelushi; Adrian A. Low

2000-01-01

303

Results of Three Years’ Experience with the Deoxyuridine Suppression Test  

Microsoft Academic Search

The results of deoxyuridine (dU) suppression tests performed on 400 marrow samples aspirated over a 3-year period are summarised. High dU-suppressed values were found in all patients with vitamin B12 or folate deficiency, in some patients receiving inhibitors of dihydrofolate reductase, in 4 of 19 epileptics receiving anticonvulsants and in 2 of 21 patients with iron deficiency anaemia. High dU-suppressed

S. N. Wickramasinghe; J. E. Saunders

1977-01-01

304

Tc99 Adsorption on Selected Activated Carbons - Batch Testing Results  

Microsoft Academic Search

CH2M HILL Plateau Remediation Company (CHPRC) is currently developing a 200-West Area groundwater pump-and-treat system as the remedial action selected under the Comprehensive Environmental Response, Compensation, and Liability Act Record of Decision for Operable Unit (OU) 200-ZP-1. This report documents the results of treatability tests Pacific Northwest National Laboratory researchers conducted to quantify the ability of selected activated carbon products

Shas V. Mattigod; Dawn M. Wellman; Elizabeth C. Golovich; Elsa A. Cordova; Ronald M. Smith

2010-01-01

305

NASA Wiring for Space Applications Program test results  

NASA Astrophysics Data System (ADS)

The objectives of the NASA Wiring for Space Applications program were to investigate the effects of atomic oxygen (AO), ultraviolet (UV) radiation, and AO with UV synergistic effects on wire insulation materials. The AO exposure was on the order of 10(exp 21) atoms/sq cm and the vacuum UV radiation was on the order of 10,000 ESH. The results of these tests are presented in this document

Vaughn, Jason A.

1995-11-01

306

The ACES Mission: System Tests Results and Development Status  

Microsoft Academic Search

Atomic Clock Ensemble in Space (ACES) is a mission of the European Space Agency (ESA) testing fundamental laws of physics with high-performance atomic clocks1 . Operated on-board the International Space Station, the ACES payload will distribute a clock signal with fractional frequency instability and inaccuracy of 1·10-16 . This frequency reference is resulting from the medium-term stability of an active

Luigi Cacciapuoti

2010-01-01

307

Summary of Test Results for Daya Bay Rock Samples  

SciTech Connect

A series of analytical tests was conducted on a suite of granitic rock samples from the Daya Bay region of southeast China. The objective of these analyses was to determine key rock properties that would affect the suitability of this location for the siting of a neutrino oscillation experiment. This report contains the results of chemical analyses, rock property measurements, and a calculation of the mean atomic weight.

Onishi, Celia Tiemi; Dobson, Patrick; Nakagawa, Seiji

2004-10-12

308

Results of 1 MWe heat exchanger tests on OTEC-1  

NASA Astrophysics Data System (ADS)

Heat exchanger test results for the first deployment of OTEC-1 are reported. These tests were aimed at evaluating the performance of a state-of-the-art 1 MWe, titanium shell-and-tube evaporator and condenser in an ocean environment. The evaporator was unique in that it consisted of both a plain and an enhanced tube bundle, whereas the condenser had plain tubes only. All tests with the evaporator were conducted in the sprayed-bundle mode. Experimental results for the condenser and plain-tube portion of the evaporator were found to be in excellent agreement with performance predictions. This result is important because it demonstrates that the thermal performance of large plain-tube heat exchangers can be predicted with a high level of confidence. On the other hand, performance of the enhanced-tube portion of the evaporator was much lower than predicted. Evidence strongly suggested that this poor performance was attributable mainly to fouling of the High Flux surface by corrosion products consisting predominantly of hydrated aluminum oxides.

Lorenz, J. J.; Yung, D.; Howard, P. A.; Panchal, C. B.; Poucher, F. W.

1981-12-01

309

Seismic II over I Drop Test Program results and interpretation  

SciTech Connect

The consequences of non-seismically qualified (Category 2) objects falling and striking essential seismically qualified (Category 1) objects has always been a significant, yet analytically difficult problem, particularly in evaluating the potential damage to equipment that may result from earthquakes. Analytical solutions for impact problems are conservative and available for mostly simple configurations. In a nuclear facility, the [open quotes]sources[close quotes] and [open quotes]targets[close quotes] requiring evaluation are frequently irregular in shape and configuration, making calculations and computer modeling difficult. Few industry or regulatory rules are available on this topic even though it is a source of considerable construction upgrade costs. A drop test program was recently conducted to develop a more accurate understanding of the consequences of seismic interactions. The resulting data can be used as a means to improve the judgment of seismic qualification engineers performing interaction evaluations and to develop realistic design criteria for seismic interactions. Impact tests on various combinations of sources and targets commonly found in one Savannah River Site (SRS) nuclear facility were performed by dropping the sources from various heights onto the targets. This report summarizes results of the Drop Test Program. Force and acceleration time history data are presented as well as general observations on the overall ruggedness of various targets when subjected to impacts from different types of sources.

Thomas, B.

1993-03-01

310

Full-scale aircraft impact test for evaluation of impact forces: Part 1, Test plan, test method, and test results  

SciTech Connect

One of the factors considered in the design of critical concrete structures is the estimation of the global elasto-plastic structural response caused by the accidental impact of an aircraft. To estimate the response of the structure, the impact force (the force versus time relationship) must be known. Previous analytical studies have derived the forcing function using the impact velocity of the aircraft and the calculated mass and strength distribution of the aircraft. This paper describes a test conducted on April 19, 1988, at an existing rocket sled facility at Sandia National Laboratories in Albuquerque, New Mexico, USA, in which an actual F-4 Phantom aircraft was impacted at a nominal velocity of 215 m/s into an essentially rigid block of concrete. This was accomplished by supporting the F-4 on four struts that were attached to the sled track by carriage shoes to direct the path of the aircraft. Propulsion was accomplished by two stages of rockets. The concrete target was 'floated' on a set of air bearings. Data acquisition consisted of measurements of the acceleration of the fuselage and engines of the F-4, and measurements of the displacement, velocity and acceleration of the concrete target. High-speed photography recorded the impact process and also permitted the determination of the impact velocity. This paper describes the test plan, method and results, while a companion paper discusses the analyses of the results. 6 refs., 11 figs.

von Riesemann, W.A.; Parrish, R.L.; Bickel, D.C.; Heffelfinger, S.R.; Muto, K.; Sugano, T.; Tsubota, H.; Koshika, N.; Suzuki, M.; Ohrui, S.

1989-03-01

311

Structurally robust biological networks  

PubMed Central

Background The molecular circuitry of living organisms performs remarkably robust regulatory tasks, despite the often intrinsic variability of its components. A large body of research has in fact highlighted that robustness is often a structural property of biological systems. However, there are few systematic methods to mathematically model and describe structural robustness. With a few exceptions, numerical studies are often the preferred approach to this type of investigation. Results In this paper, we propose a framework to analyze robust stability of equilibria in biological networks. We employ Lyapunov and invariant sets theory, focusing on the structure of ordinary differential equation models. Without resorting to extensive numerical simulations, often necessary to explore the behavior of a model in its parameter space, we provide rigorous proofs of robust stability of known bio-molecular networks. Our results are in line with existing literature. Conclusions The impact of our results is twofold: on the one hand, we highlight that classical and simple control theory methods are extremely useful to characterize the behavior of biological networks analytically. On the other hand, we are able to demonstrate that some biological networks are robust thanks to their structure and some qualitative properties of the interactions, regardless of the specific values of their parameters.

2011-01-01

312

Robust Cognitive Change  

PubMed Central

Two major challenges facing researchers interested in cognitive change are that measures of change are often not very reliable, and they may reflect effects of prior test experience in addition to the factors of primary interest. One approach to dealing with these problems is to obtain multiple measures of change on parallel versions of the same tests in a measurement burst design. A total of 783 adults performed three parallel versions of cognitive tests on two occasions separated by an average of 2.6 years. Performance increased substantially across the three sessions within each occasion, and for all but vocabulary ability these within-occasion improvements were considerably larger than the between-occasion changes. Reliabilities of the changes in composite scores were low, but averages of the three changes had larger, albeit still quite modest, reliabilities. In some cognitive abilities individual differences were evident in the relation of prior test experience and the magnitude of longitudinal change. Although multiple assessments are more time consuming than traditional measurement procedures, the resulting estimates of change are more robust than those from conventional methods, and also allow the influence of practice on change to be systematically investigated.

Salthouse, Timothy A.

2013-01-01

313

Underground tank vitrification: Engineering-scale test results  

SciTech Connect

Contamination associated with underground tanks at US Department of Energy sites and other sites may be effectively remediated by application of in situ vitrification (ISV) technology. In situ vitrification converts contaminated soil and buried wastes such as underground tanks into a glass and crystalline block, similar to obsidian with crystalline phases. A radioactive engineering-scale test performed at Pacific Northwest Laboratory in September 1989 demonstrated the feasibility of using ISV for this application. A 30-cm-diameter (12-in.-diameter) buried steel and concrete tank containing simulated tank sludge was vitrified, producing a solid block. The tank sludge used in the test simulated materials in tanks at Oak Ridge National Laboratory. Hazardous components of the tank sludge were immobilized or removed and captured in the off-gas treatment system. The steel tank was converted to ingots near the bottom of the block and the concrete walls were dissolved into the resulting glass and crystalline block. Although one of the four moving electrodes froze'' in place about halfway into the test, operations were able to continue. The test was successfully completed and all the tank sludge was vitrified. 7 refs., 12 figs., 5 tabs.

Campbell, B.E.; Timmerman, C.L.; Bonner, W.F.

1990-06-01

314

Test results for the Gemini Planet Imager data reduction pipeline  

NASA Astrophysics Data System (ADS)

The Gemini Planet Imager (GPI) is a new facility instrument for the Gemini Observatory designed to detect and characterize planets and debris disks orbiting nearby stars; its science camera is a near infrared integral field spectrograph. We have developed a data pipeline for this instrument, which will be made publicly available to the community. The GPI data reduction pipeline (DRP) incorporates all necessary image reduction and calibration steps for high contrast imaging in both the spectral and polarimetric modes, including datacube generation, wavelength solution, astrometric and photometric calibrations, and speckle suppression via ADI and SSDI algorithms. It is implemented in IDL as a flexible modular system, and includes both command line and graphical interface tools including a customized viewer for GPI datacubes. This GPI data reduction pipeline is currently working very well, and is in use daily processing data during the instrument’s ongoing integration and test period at UC Santa Cruz. Here we summarize the results from recent pipeline tests, and present reductions of instrument test data taken with GPI. We will continue to refine and improve these tools throughout the rest of GPI’s testing and commissioning, and they will be released to the community, including both IDL source code and compiled versions that can be used without an IDL license.

Maire, Jérôme; Perrin, Marshall D.; Doyon, René; Chilcote, Jeffrey; Larkin, James E.; Weiss, Jason L.; Marois, Christian; Konopacky, Quinn M.; Millar-Blanchaer, Maxwell; Graham, James R.; Dunn, Jennifer; Galicher, Raphael; Marchis, Franck; Wiktorowicz, Sloane J.; Labrie, Kathleen; Thomas, Sandrine J.; Goodsell, Stephen J.; Rantakyro, Fredrik T.; Palmer, David W.; Macintosh, Bruce A.

2012-09-01

315

Test results of the advanced translator processing system  

NASA Astrophysics Data System (ADS)

The Advanced Translator Processing System was developed to provide a low cost alternative to tracking translated GPS signals. It is backwards compatible with the Translator Processing System (TPS) currently used to track Ballistic Missile Translators (BMT) by the US Ranges. NAVSYS has also developed a BMT compatible Translator. A key element of the ATPS is the Preamplifier/Downconvertor (P/DC) module which was developed by NAVSYS to condition the received Translator signal so it can be tracked with a conventional C/A code receiver. This significantly reduces the cost of the hardware by allowing the ATPS to be constructed mostly from off-the-shelf components. The ATPS and Translator were tested against the RAJPO Ballistic Missile and Translator Processing System Specifications. This paper presents the results of tests demonstrating the performance of the ATPS and Translator under different operating conditions. NAVSYS has also developed a Post Test Processing System (PTPS), incorporating the same components, which records the Translator data during the tests. When this data is played back, high-accuracy Time and Space Position

Brown, Alison K.; Sward, William; Brown, Peter

1992-11-01

316

Synthetic vision system flight test results and issues  

NASA Astrophysics Data System (ADS)

An active 35 GHz radar imaging system was developed and demonstrated as part of the synthetic vision system technology demonstration (SVSTD) program sponsored by the FAA, the USAF, and industry. During flight tests, an SVS equipped Gulfstream 2 aircraft made over 200 approaches at 27 different airports (and one aircraft carrier) in all types of weather. The 35 GHz imaging radar demonstrated its potential by allowing the test pilots to successfully land in adverse weather conditions that would have made a visual approach impossible. An overview of the radar system implementation architecture and flight test results is provided, along with perspectives on the lessons that were learned from the SVS flight tests. One objective of the SVSTD program was to explore several known system issues concerning radar imaging technology. The program ultimately resolved some of these issues, left others open, and in fact created several new concerns. The motivation for this paper is to identify major issues that were resolved, and provide researchers with a better understanding of the issues that remain open.

Radke, Jeffrey D.; Ferguson, Dennis

1994-07-01

317

Robust Methods in Qsar  

NASA Astrophysics Data System (ADS)

A large progress in the development of robust methods as an efficient tool for processing of data contaminated with outlying objects has been made over the last years. Outliers in the QSAR studies are usually the result of an improper calculation of some molecular descriptors and/or experimental error in determining the property to be modelled. They influence greatly any least square model, and therefore the conclusions about the biological activity of a potential component based on such a model are misleading. With the use of robust approaches, one can solve this problem building a robust model describing the data majority well. On the other hand, the proper identification of outliers may pinpoint a new direction of a drug development. The outliers' assessment can exclusively be done with robust methods and these methods are to be described in this chapter

Walczak, Beata; Daszykowski, Micha?; Stanimirova, Ivana

318

Initial test results and test plan for differential temperature controllers used in solar energy systems  

SciTech Connect

The initial test results and procedures used to conduct tests on differential temperature controllers used on solar energy systems are discussed. These tests were performed on generally non-adjustable, non-display units and include the following functional tests conducted at abient conditions: delta T ''on'' and ''off''; recirculating freeze protection with and without auxiliary sensor; controller repsonse to sensor sensitivity; storage high temperature limit; and pump ''off'' below 80/sup 0/C. Controller sensitivity to line voltage variation tests were also conducted at ambient conditions and include: delta T ''on'' and ''off'' and recirculating freeze protection. The controller test fixture is also described along with the recommended use of decade resistance boxes to simulate thermistor inputs. An overall test plan is also included as a appendix to the report.

Greenberg, J.

1986-04-01

319

The effect of specimen hemolysis on coagulation test results.  

PubMed

Hemolyzed specimens are rejected for coagulation testing based on concerns of artifactual interference. Prothrombin time (PT), activated partial thromboplastin time (aPTT), and selected factor assay test results for consecutive pairs of hemolyzed and subsequently recollected (mean, 72 minutes later) nonhemolyzed patient specimens were compared. Specimens from healthy human subjects were subjected to mechanically induced hemolysis, and PT and aPTT results compared with concurrently drawn nonhemolyzed control samples. In 50 paired patient specimens, there were statistically significant differences in PT (15.8 +/- 8.4 vs 16.3 +/- 8.7 seconds, P < .01) and aPTT (31.6 +/- 18 vs 32.5 +/- 19 seconds, P < .01) between hemolyzed and nonhemolyzed specimens, respectively. Specimens from healthy subjects showed no difference in PT and a minor difference in aPTT. A policy of rejecting hemolyzed specimens for coagulation tests should be revisited because the observed difference, when present, is unlikely to be considered clinically meaningful. PMID:17050072

Laga, Alvaro C; Cheves, Tracey A; Sweeney, Joseph D

2006-11-01

320

Results of acoustic tests of a Prop-Fan model  

NASA Astrophysics Data System (ADS)

Results of acoustic tests in a low speed open jet anechoic wind tunnel are presented for a counter rotation Prop-Fan model. The model tested had 5 front and 5 rear rotor blades with swept planform. Noise spectra are presented showing the influence of operating and configuration variables such as: (1) power absorption, (2) tip speed, (3) rotor-rotor spacing, (4) power split between the front and rear blade rows, (5) variation of the RPM ratio between front and rear blade rows, (6) tractor versus pusher (pylon effects), and (7) angle of attack. In addition to model scale results, calculated levels derived from test are presented showing the influence of the above variables on Effective Perceived Noise Level of a 13.1 ft diameter Prop-Fan at a flyover distance of 1500 ft. It was found that the strongest effects are caused by tip speed and power absorption. A significant finding was that there is an optimum operating tip speed for minimum noise for a given power absorption. Effects of other parametric variations are generally small but measurable. In order to minimize noise to meet airplane certification limits, operation at moderate tip speeds and power absorption is shown to be desirable. Accuracy of predicted Effective Perceived Noise Level is shown to be good with the best accuracy in the 590 to 670 ft/sec tip speed range.

Metzger, F. B.; Brown, P. C.

1987-06-01

321

LWR surveillance dosimetry improvement program: PSF metallurgical blind test results  

SciTech Connect

The metallurgical irradiation experiment at the Oak Ridge Research Reactor Poolside Facility (ORR-PSF) was designed as a benchmark to test the accuracy of radiation embrittlement predictions in the pressure vessel wall of light water reactors on the basis of results from surveillance capsules. The PSF metallurgical Blind Test is concerned with the simulated surveillance capsule (SSC) and the simulated pressure vessel capsule (SPVC). The data from the ORR-PSF benchmark experiment are the basis for comparison with the predictions made by participants of the metallurgical ''Blind Test''. The Blind Test required the participants to predict the embrittlement of the irradiated specimen based only on dosimetry and metallurgical data from the SSC1 capsule. This exercise included both the prediction of damage fluence and the prediction of embrittlement based on the predicted fluence. A variety of prediction methodologies was used by the participants. No glaring biases or other deficiencies were found, but neither were any of the methods clearly superior to the others. Closer analysis shows a rather complex and poorly understood relation between fluence and material damage. Many prediction formulas can give an adequate approximation, but further improvement of the prediction methodology is unlikely at this time given the many unknown factors. Instead, attention should be focused on determining realistic uncertainties for the predicted material changes. The Blind Test comparisons provide some clues for the size of these uncertainties. In particular, higher uncertainties must be assigned to materials whose chemical composition lies outside the data set for which the prediction formula was obtained. 16 references, 14 figures, 5 tables.

Kam, F.B.K.; Maerker, R.E.; Stallmann, F.W.

1984-01-01

322

High school staff characteristics and mathematics test results  

NSDL National Science Digital Library

This study investigates the relationship between measures of mathematics teacher skill and student achievement in California high schools. Test scores are analyzed in relation to teacher experience and education and student demographics. The results are consistent with the hypotheses that there is a shortage of qualified mathematics teachers in California and that this shortage is associated with low student scores in mathematics. After controlling for poverty, teacher experience and preparation significantly predict test scores. Short-term strategies to increase the supply of qualified mathematics teachers could include staff development, and recruitment incentives. A long-term strategy addressing root causes of the shortage requires more emphasis on mathematics in high school and undergraduate programs.

Fetler, Mark

2010-06-22

323

LEDA RF distribution system design and component test results  

SciTech Connect

The 350 MHz and 700 MHz RF distribution systems for the Low Energy Demonstration Accelerator (LEDA) have been designed and are currently being installed at Los Alamos National Laboratory. Since 350 MHz is a familiar frequency used at other accelerator facilities, most of the major high-power components were available. The 700 MHz, 1.0 MW, CW RF delivery system designed for LEDA is a new development. Therefore, high-power circulators, waterloads, phase shifters, switches, and harmonic filters had to be designed and built for this applications. The final Accelerator Production of Tritium (APT) RF distribution systems design will be based on much of the same technology as the LEDA systems and will have many of the RF components tested for LEDA incorporated into the design. Low power and high-power tests performed on various components of these LEDA systems and their results are presented here.

Roybal, W.T.; Rees, D.E.; Borchert, H.L. [Los Alamos National Lab., NM (United States); McCarthy, M. [General Atomics, San Diego, CA (United States); Toole, L. [Savannah River Site, Aiken, SC (United States)

1998-12-31

324

Enhancing Building Operations through Automated Diagnostics: Field Test Results  

SciTech Connect

The Whole Building Diagnostician (WBD) is a modular diagnostic software system that provides detection and diagnosis of problems with the operation of HVAC systems and major energy end-uses. It has been extensively field tested and demonstrated in buildings over the past several years. WBD found problems with many air-handling units at all sites. The problems ranged from a simple set point deviation to improper implementation of controls. The results from these demonstrations along with the feedback from building operators and managers on the use of diagnostic tools are presented in the paper. Experience from field tests indicates that providing diagnostic tools to building operators can increase their awareness of equipment faults but it will not by itself solve the problems of inefficient operations. Changes in operation and maintenance practices and behavior are needed. We discuss how these new technologies might be delivered and used more effectively to better manage facilities, improving their condition and increasing their energy efficiency.

Katipamula, Srinivas; Brambley, Michael R.; Bauman, Nathan N.; Pratt, Robert G.

2003-10-13

325

Test results of LHC interaction regions quadrupoles produced by Fermilab  

SciTech Connect

The US-LHC Accelerator Project is responsible for the production of the Q2 optical elements of the final focus triplets in the LHC interaction regions. As part of this program Fermilab is in the process of manufacturing and testing cryostat assemblies (LQXB) containing two identical quadrupoles (MQXB) with a dipole corrector between them. The 5.5 m long Fermilab designed MQXB have a 70 mm aperture and operate in superfluid helium at 1.9 K with a peak field gradient of 215 T/m. This paper summarizes the test results of several production MQXB quadrupoles with emphasis on quench performance and alignment studies. Quench localization studies using quench antenna signals are also presented.

Bossert, R.; Carson, J.; Chichili, D.R.; Feher, S.; Kerby, J.; Lamm, M.J.; Nobrega, A.; Nicol, T.; /Fermilab; Ogitsu, T.; /KEK, Tsukuba; Orris, D.; Page, T.; Peterson, T.; Rabehl, R.; Robotham, W.; /Fermilab; Scanlan, R.; /LBL, Berkeley; Schlabach, P.; Sylvester, C.; Strait, J.; Tartaglia, M.; Tompkins, J.C.; Velev, G.; /Fermilab

2004-10-01

326

Dark Ages Radio Explorer Instrument Verification Program: Antenna Test Results  

NASA Astrophysics Data System (ADS)

Observations of the HI 21 cm transition line promises to be an important probe into the cosmic Dark Ages and Epoch of Reionization. The Dark Ages Radio Explorer (DARE) is designed to measure the sky-averaged 21-cm signal from this cosmic age using a single radiometer operating between 40-120 MHz (redshifts z=11-35). DARE will orbit the Moon for a mission lifetime of ? 3 years and take data above the lunar far side, where it is shielded from the Earth's intense interference. The science objectives of DARE include formation of first stars, first accreting black holes, beginning of reionization and end of the Dark Ages. The science instrument is composed of a three-element radiometer, including electrically-short, tapered, bi-conical dipole antennas, a receiver, and a digital spectrometer. Although the TRL (Technology Readiness Level) of the individual components of DARE instrument is high, the overall instrument TRL is low. One of the main aim of the entire DARE team is to advance the instrument TRL. In this work we mainly focus on the development work for DARE Antenna. We will present the initial test results of a prototype DARE antenna, fabricated in NRAO. Some CST simulations using the actual DARE experiment set up have also been performed. In future, we plan to perform extensive tests to characterize the beam pattern and spectral response of the prototype DARE instrument design. In order to utilize the anechoic chamber available at NRAO, we will use a half-scale version of the DARE antenna (120-200 MHz). The full-scale version of the DARE antenna (40-120 MHz) along with the final version of the DARE receiver will be used for outdoor tests in the low-RFI environment of Western Australia. We will also present the initial software development for analyzing the test results from the prototype DARE antenna and receiver.

Datta, Abhirup; Bradley, R.; Burns, J. O.; Lazio, J.; Bauman, J.

2012-01-01

327

Salmonella mutagenicity tests. II. Results from the testing of 270 chemicals  

Microsoft Academic Search

This publication includes data of Salmonella mutagenicity results on 270 coded chemicals, encompassing 329 tests performed by three laboratories under contract to the National Toxicology Program (NTP). The preincubation modification of the Salmonella\\/mammalian microsome assay was used to test chemicals in up to five Salmonella strains in the presence and absence of rat and hamster liver S-9. With a few

Kristien Mortelmans; Steve Haworth; Timothy Lawlor; William Speck; Beth Tainer; Errol Zeiger

1986-01-01

328

Test results and status of the DOE\\/Sandia 34-m VAWT Test Bed  

Microsoft Academic Search

The DOE\\/Sandia 34-m VAWT Test Bed has been fully operational for over a year. During that time extensive performance data have been gathered. This paper first briefly discusses the background and evolution of this research turbine and its testing philosophy. Next, specific results are presented in the areas of aerodynamics, structural dynamics, and operation and control. The aerodynamics section primarily

H. M. Dodd; T. D. Ashwill; D. E. Berg; M. E. Ralph; W. A. Stephenson; P. S. Veers

1989-01-01

329

Results of a nationwide proficiency test for carcinoembryonic antigen.  

PubMed Central

A proficiency testing survey for carcinoembryonic antigen (CEA) was conducted by the Center for Disease Control. The results from 125 laboratories throughout the United States indicate that many laboratories perform satisfactorily, but some laboratories need substantial improvement. Failure to follow manufacturer's recommendations and failure to heed the indications of "out of control" control results were two of the reasons for poor performance. Results reported for samples with CEA levels of larger than or equal to 20 ng/ml showed that the direct method produced significantly higher values than the indirect method on either whole of diluted plasma. Almost one-fourth of the results reported in this survey were placed in the wrong nominal group. It was determined that the results were log normally distributed and, consequently, that statistical methods that are appropriate for this distribtuion should be used for the analysis of CEA results. Most of the variation observed was the result of poor comparability between laboratories rather than lack of precision within the laboratory. This indicates that better performance could be achieved by better standardization and closer adherence to established procedures.

Taylor, R N; Fulford, K M; Huong, A Y

1977-01-01

330

Current test results for the Athena radar responsive tag  

NASA Astrophysics Data System (ADS)

Sandia National Laboratories has teamed with General Atomics and Sierra Monolithics to develop the Athena tag for the Army's Radar Tag Engagement (RaTE) program. The radar-responsive Athena tag can be used for Blue Force tracking and Combat Identification (CID) as well as data collection, identification, and geolocation applications. The Athena tag is small (~4.5" x 2.4" x 4.2"), battery-powered, and has an integral antenna. Once remotely activated by a Synthetic Aperture Radar (SAR) or Moving Target Indicator (MTI) radar, the tag transponds modulated pulses to the radar at a low transmit power. The Athena tag can operate Ku-band and X-band airborne SAR and MTI radars. This paper presents results from current tag development testing activities. Topics covered include recent field tests results from the AN/APY-8 Lynx, F16/APG-66, and F15E/APG-63 V(1) radars and other Fire Control radars. Results show that the Athena tag successfully works with multiple radar platforms, in multiple radar modes, and for multiple applications. Radar-responsive tags such as Athena have numerous applications in military and government arenas. Military applications include battlefield situational awareness, combat identification, targeting, personnel recovery, and unattended ground sensors. Government applications exist in nonproliferation, counter-drug, search-and-rescue, and land-mapping activities.

Ormesher, Richard C.; Martinez, Ana; Plummer, Kenneth W.; Erlandson, David; Delaware, Sheri; Clark, David R.

2006-06-01

331

Expose : procedure and results of the joint experiment verification tests  

NASA Astrophysics Data System (ADS)

The International Space Station will carry the EXPOSE facility accommodated at the universal workplace URM-D located outside the Russian Service Module. The launch will be affected in 2005 and it is planned to stay in space for 1.5 years. The tray like structure will accomodate 2 chemical and 6 biological PI-experiments or experiment systems of the ROSE (Response of Organisms to Space Environment) consortium. EXPOSE will support long-term in situ studies of microbes in artificial meteorites, as well as of microbial communities from special ecological niches, such as endolithic and evaporitic ecosystems. The either vented or sealed experiment pockets will be covered by an optical filter system to control intensity and spectral range of solar UV irradiation. Control of sun exposure will be achieved by the use of individual shutters. To test the compatibility of the different biological systems and their adaptation to the opportunities and constraints of space conditions a profound ground support program has been developed. The procedure and first results of this joint Experiment Verification Tests (EVT) will be presented. The results will be essential for the success of the EXPOSE mission and have been done in parallel with the development and construction of the final hardware design of the facility. The results of the mission will contribute to the understanding of the organic chemistry processes in space, the biological adaptation strategies to extreme conditions, e.g. on early Earth and Mars, and the distribution of life beyond its planet of origin.

Panitz, C.; Rettberg, P.; Horneck, G.; Rabbow, E.; Baglioni, P.

332

The Castor 120 (TM) motor: Development and qualification testing results  

NASA Astrophysics Data System (ADS)

This paper discusses Thiokol Corporation's static test results for the development and qualification program of the Castor 120(TM) motor. The demonstration program began with a 25,000-pound motor to demonstrate the new technologies and processes that would be used on the larger Castor 120(TM) motor. The Castor 120(TM) motor was designed to be applicable as a first stage, second stage, or strap-on motor. Static test results from the Castor 25 and two Castor 120(TM) motors are discussed in this paper. The results verified the feasibility of tailoring the propellant grain configuration and nozzle throat diameter to meet various customer requirements. The first and second motors were conditioned successfully at ambient temperature and 28 F, respectively, to demonstrate that the design could handle a wide range of environmental launch conditions. Furthermore, the second Castor 120(TM) motor demonstrated a systems tunnel and forward skirt extension to verify flight-ready stage hardware. It is anticipated that the first flight motor will be ready by the fall of 1994.

Hilden, Jack G.; Poirer, Beverly M.

1993-01-01

333

Deimos Methane-Oxygen Rocket Engine Test Results  

NASA Astrophysics Data System (ADS)

This paper presents the results of the first DEIMOS Liquid Methane/Oxygen rocket engine test campaign. DEIMOS is an acronym for `Delft Experimental Methane Oxygen propulsion System'. It is a project performed by students under the auspices of DARE (Delft Aerospace Rocket Engineering). The engine provides a theoretical design thrust of 1800 N and specific impulse of 287 s at a chamber pressure of 40 bar with a total mass flow of 637 g/s. It has links to sustainable development, as the propellants used are one of the most promising so-called `green propellants'-combinations, currently under scrutiny by the industry, and the engine is designed to be reusable. This paper reports results from the provisional tests, which had the aim of verifying the engine's ability to fire, and confirming some of the design assumptions to give confidence for further engine designs. Measurements before and after the tests are used to determine first estimates on feed pressures, propellant mass flows and achieved thrust. These results were rather disappointing from a performance point of view, with an average thrust of a mere 3.8% of the design thrust, but nonetheless were very helpful. The reliability of ignition and stability of combustion are discussed as well. An initial assessment as to the reusability, the flexibility and the adaptability of the engine was made. The data provides insight into (methane/oxygen) engine designs, leading to new ideas for a subsequent design. The ultimate goal of this project is to have an operational rocket and to attempt to set an amateur altitude record.

Engelen, S.; Souverein, L. J.; Twigt, D. J.

334

Results of the Centralia underground coal gasification field test  

Microsoft Academic Search

The Centralia Partial Seam CRIP (PSC) test described herein is the second test conducted at this site. The first test was done in the fall and winter of 1981 to 1982 when the Large Block (LBK) tests were successfully completed at the Centralia, Washington site. The LBK tests consisted of five small scale experiments in which approximately 900 to 1800

R. W. Hill; C. B. Thorsness; R. J. Cena; D. R. Stephens

1984-01-01

335

Comparison of threshold galling results from two testing methods  

Microsoft Academic Search

In this investigation, threshold galling tests were performed on several types of stainless steel using area contact and line contact testing procedures. The area contact test method employed was the ASTM standard G98, button-on-block test. In this test method, the end of a cylindrical button is placed in contact with a flat block at a desired contact pressure. The button

Scott R Hummel; Benjamin Partlow

2004-01-01

336

The Internationalization of Test Reviewing: Trends, Differences, and Results  

ERIC Educational Resources Information Center

|In this article, the characteristics of five test review models are described. The five models are the US review system at the Buros Center for Testing, the German Test Review System of the Committee on Tests, the Brazilian System for the Evaluation of Psychological Tests, the European EFPA Review Model, and the Dutch COTAN Evaluation System for…

Evers, Arne

2012-01-01

337

Exhaust emission testing of two ethanol variable fueled 1992 Chevrolet Luminas. Test results - 1993. Technical report  

SciTech Connect

The report describes the exhaust emission testing results for two 1992 low-mileage Chevrolet Lumina ethanol variable fuel vehicles. The vehicles were tested on both Indolene and E85 fuel using the Federal Test Procedure (FTP) for exhaust emissions. In the future, the EPA will retest the Luminas at future mileage accumulations of 20,000, 50,000 and possibly 100,000. At these future mileage accumulations, the vehicles will also be tested using intermediate fuel blends for both exhaust and evaporative emissions.

Samulski, M.

1994-01-01

338

Non-Nuclear Validation Test Results of a Closed Brayton Cycle Test-Loop  

NASA Astrophysics Data System (ADS)

Both NASA and DOE have programs that are investigating advanced power conversion cycles for planetary surface power on the moon or Mars, or for next generation nuclear power plants on earth. Although open Brayton cycles are in use for many applications (combined cycle power plants, aircraft engines), only a few closed Brayton cycles have been tested. Experience with closed Brayton cycles coupled to nuclear reactors is even more limited and current projections of Brayton cycle performance are based on analytic models. This report describes and compares experimental results with model predictions from a series of non-nuclear tests using a small scale closed loop Brayton cycle available at Sandia National Laboratories. A substantial amount of testing has been performed, and the information is being used to help validate models. In this report we summarize the results from three kinds of tests. These tests include: 1) test results that are useful for validating the characteristic flow curves of the turbomachinery for various gases ranging from ideal gases (Ar or Ar/He) to non-ideal gases such as CO2, 2) test results that represent shut down transients and decay heat removal capability of Brayton loops after reactor shut down, and 3) tests that map a range of operating power versus shaft speed curve and turbine inlet temperature that are useful for predicting stable operating conditions during both normal and off-normal operating behavior. These tests reveal significant interactions between the reactor and balance of plant. Specifically these results predict limited speed up behavior of the turbomachinery caused by loss of load, the conditions for stable operation, and for direct cooled reactors, the tests reveal that the coast down behavior during loss of power events can extend for hours provided the ultimate heat sink remains available.

Wright, Steven A.

2007-01-01

339

Test Results of the Luminosity Monitors for the LHC  

SciTech Connect

The Luminosity Monitor for the LHC has been built at LBNL and will be operational in the LHC during the upcoming run. The device, a gas ionization chamber, is installed in the high luminosity regions (those dedicated to the ATLAS and CMS experiments) and capable to resolve bunch-by-bunch luminosity as well as survive extreme levels of radiation. During the experimental R&D phase of its design, a prototype of this detector has been tested extensively at the ALS, in RHIC as well as in the SPS. Results of these experiments are presented here.

Beche, J.F.; Byrd, J. M.; Doolittle, L.; Manfredi, P. F.; Matis, H. S.; Monroy, M.; Ratti, A.; Stezelberger, T.; Stiller, J.; Turner, W.; Yaver, H.; Drees, A.; Bravin, E.

2009-05-04

340

Field test results with the targeted search MCSA  

NASA Astrophysics Data System (ADS)

In April 1985, a 74000 channel prototype of the multi-channel spectrum analyzer (MCSA) that NASA plans to use in a systematic search for extraterrestrial intelligence (SETI) was installed at DSS 13, a 26 meter R&D antenna facility at the Goldstone Deep Space Network (DSN) site. Since that time the instrumentation has been used to validate the performance of signal detection algorithms using locally injected signals and the weak carriers from distant spacecraft. This paper describes results from the Goldstone Field Tests and plans to move the prototype equipment to other sites where SETI may be conducted in the future.

Tarter, J. C.

341

Plutonium immobilization program - Cold pour Phase 1 test results  

SciTech Connect

The Plutonium Immobilization Project will disposition excess weapons grade plutonium. It uses the can-in-canister approach that involves placing plutonium-ceramic pucks in sealed cans that are then placed into Defense Waste Processing Facility canisters. These canisters are subsequently filled with high-level radioactive waste glass. This process puts the plutonium in a stable form and makes it unattractive for reuse. A cold (non-radioactive) glass pour program was performed to develop and verify the baseline design for the canister and internal hardware. This paper describes the Phase 1 scoping test results.

Hamilton, L.

2000-04-28

342

Plutonium Immobilization Program -- Cold pour Phase 1 test results  

SciTech Connect

The Plutonium Immobilization Project will disposition excess weapons grade plutonium. It uses the can-in-canister approach that involves placing plutonium-ceramic pucks in sealed cans that are then placed into Defense Waste Processing Facility canisters. These canisters are subsequently filled with high-level radioactive waste glass. This process puts the plutonium in a stable form and makes it unattractive for reuse. A cold (non-radioactive) glass pour program was performed to develop and verify the baseline design for the canister and internal hardware. This paper describes the Phase 1 scoping test results.

Hamilton, L.

2000-01-18

343

Test results of the AGS Booster low frequency RF system  

SciTech Connect

The Band II RF system was originally built to support the Booster operations during the acceleration of heavy ions. Designed to sweep from 0.6 to 2.5 MHz, it was build and successfully tested over a much broader range reaching 4 MHz. Voltages up to more than 20 kV were reached over the design frequency range. The system consists of two stations, each of which is made of one single gap cavity directly driven by a grounded cathode push pull power amplifier. The low Q high permeability ferrites needed in the coaxial cavity in order to reach the lower end of the band make tuning extremely easy. Both systems were thoroughly tested both at single frequencies and on a sweep and are now installed in the ring, ready for operations. Static measurements showed no high-loss effects. The Band 11 system has been fully described in a previous paper; presented here are the results of the bench'' tests that lead to important performance improvements.

Sanders, R.T.; Cameron, P.; Damm, R.; Dunbar, A.; Goldman, M.; Kasha, D.; McNerney, A.; Meth, M.; Ratti, A.; Spitz, R.

1993-01-01

344

Initial results of swelling and irradiation creep interaction testing  

SciTech Connect

An EBR-II irradiation test, designated as WSA-60, was established to provide swelling and irradiation creep interaction data when these two effects interact simultaneously in opposition. This type of behavior occurs under irradiation in cylindrical tubing containing an internal heat source and external heat sink. The WSA-60 test consists of encapsulated fuel pins wherein the capsules comprise the test samples. Slit tube data have been obtained on two 20% cold-worked AISI 316 stainless steel capsules irradiated to a peak fluence level of 2.2 x 10/sup 22/ n/cm/sup 2/ (E > 0.1 MeV). The capsules were irradiated to approximately the same fluence level and had similar temperature profiles. The slit tube data from the two capsules were observed to be self-consistent. Since the data are limited to low fluence levels where swelling is negligible the material behavior is dominated by irradiation creep effects. An assessment of the slit tube data was made by comparing the data with performance calculations using an irradiation creep equation formulated from pressurized tube data. The results show significant differences between the slit tube data and the calculations. A 34% reduction in irradiation creep was necessary to obtain consistency between the data and calculations. This difference is attributed to the following: (1) differences in material compositions between the slit tube and pressurized tube specimens; (2) the analytical methods used in irradiation creep equation development.

Foster, J.P.

1982-01-01

345

Bridge Testing With Ground-Based Interferometric Radar: Experimental Results  

NASA Astrophysics Data System (ADS)

The research of innovative non-contact techniques aimed at the vibration measurement of civil engineering structures (also for damage detection and structural health monitoring) is continuously directed to the optimization of measures and methods. Ground-Based Radar Interferometry (GBRI) represents the more recent technique available for static and dynamic control of structures and ground movements. Dynamic testing of bridges and buildings in operational conditions are currently performed: (a) to assess the conformity of the structure to the project design at the end of construction; (b) to identify the modal parameters (i.e. natural frequencies, mode shapes and damping ratios) and to check the variation of any modal parameters over the years; (c) to evaluate the amplitude of the structural response to special load conditions (i.e. strong winds, earthquakes, heavy railway or roadway loads). If such tests are carried out by using a non-contact technique (like GBRI), the classical issues of contact sensors (like accelerometers) are easily overtaken. This paper presents and discusses the results of various tests carried out on full-scale bridges by using a Stepped Frequency-Continuous Wave radar system.

Chiara, P.; Morelli, A.

2010-05-01

346

Preliminary results of the LAT Calibration Unit beam tests  

SciTech Connect

The calibration strategy of the GLAST Large Area Telescope (LAT) combines analysis of cosmic ray data with accelerator particle beams measurements. An advanced Monte Carlo simulation of the LAT, based on the Geant4 package, was set up to reproduce the LAT response to such radiation and to benchmark the event reconstruction and the background rejection strategy before launch and during operation. To validate the LAT simulation, a massive campaign of beam tests was performed between July and November 2006, in parallel with the LAT integration and test, on the LAT Calibration Unit. This is a detector built with spare flight modules and flight-like readout electronics, which was exposed to a large variety of beams, representing the whole spectrum of the signal that will be detected by the LAT, using the CERN and the GSI accelerator facilities. Beams of photons (0 - 2.5 GeV), electrons (1 - 300 GeV), hadrons ({pi} and p, a few GeV - 100 GeV) and ions (C; Xe, 1.5 GeV/n) were shot through the CU to measure the physical processes taking place in the detector and eventually fine-tune their description in the LAT Monte Carlo simulation. This paper describes the motivations and goals of the test runs, the many different experimental setups used, the measured detector performance and preliminary results of the LAT Monte Carlo validation.

Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Kuss, M.; Latronico, L.; Minuti, M.; Omodei, N.; Pinchera, M.; Sgro, C.; Spandre, G. [INFN, Sezione di Pisa, L.go Pontecorvo 3, 56127 Pisa (Italy); Barbiellini, G.; Longo, F. [Dipartim. di Fisica, via Valerio 2, 34127 Trieste (Italy); INFN, sezione di Trieste, via Valerio 2, 34127 Trieste (Italy); Bogart, J. R.; Borgland, A. W.; Charles, E.; Claus, R.; Dubois, R.; Focke, W. B.; Kelly, H. M. [Stanford Linear Accelerator Center, Menlo Park, California, 94025 (United States)] (and others)

2007-07-12

347

Relating results from earthworm toxicity tests to agricultural soil  

USGS Publications Warehouse

The artificial soil tests of the European Economic Community and of the Organization for Economic Cooperation produce data relating earthworm mortality to pesticide concentrations in soil under laboratory conditions. To apply these results to agricultural soils it is necessary to relate these concentrations to amounts of pesticide applied per area. This paper reviews the relevant published literature and suggests a simple relation for regulatory use. Hazards to earthworms from pesticides are suggested to be greatest soon after application, when the pesticides may be concentrated in a soil layer a few millimeters thick. For estimating exposure of earthworms, however, a thicker soil layer should be considered, to account for their movement through soil. During favorable weather conditions, earthworms belonging to species appropriate to the artificial soil test have been reported to confine their activity to a layer about 5 cm. If a 5-cm layer is accepted as relevant for regulatory purposes, then an application of 1 kg/ha would be equivalent to 1-67 ppm (dry) in the artificial soil test.

Beyer, W.N.

1992-01-01

348

Operational Results of a Closed Brayton Cycle Test-Loop  

NASA Astrophysics Data System (ADS)

A number of space and terrestrial power system designs plan to use nuclear reactors that are coupled to Closed-loop Brayton Cycle (CBC) systems to generate electrical power. Because very little experience exists regarding the operational behavior of these systems, Sandia National Laboratories (through its Laboratory Directed Research and Development program) is developing a closed-loop test bed that can be used to determine the operational behavior of these systems and to validate models for these systems. Sandia has contracted Barber-Nichols Corporation to design, fabricate, and assemble a Closed-loop Brayton Cycle (CBC) system. This system was developed by modifying commercially available hardware. It uses a 30 kWe Capstone C-30 gas-turbine unit (www.capstoneturbine.com) with a modified housing that permits the attachment of an electrical heater and a water cooled chiller that are connected to the turbo-machinery in a closed loop. The test-loop reuses the Capstone turbine, compressor, and alternator. The Capstone system's nominal operating point is 1150 K turbine inlet temperature at 96,000 rpm. The annular recuperator and portions of the Capstone control system (inverter) and starter system are also reused. The rotational speed of the turbo-machinery is controlled either by adjusting the alternator load by either using the electrical grid or a separate load bank. This report describes the test-loop hardware SBL-30 (Sandia Brayton Loop-30kWe). Also presented are results of early testing and modeling of the unit. The SBL-30 hardware is currently configured with a heater that is limited to 80 kWth with a maximum outlet temperature of ~1000 K.

Wright, Steven A.; Fuller, Robert; Lipinski, Ronald J.; Nichols, Kenneth; Brown, Nicholas

2005-02-01

349

Test results of high-precision large cryogenic lens holders  

NASA Astrophysics Data System (ADS)

For the Euclid mission a Pre-Development phase is implemented to prove feasibility of individual components of the system [1]. The Near Infrared Spectrometer and Photometer (NISP) of EUCLID requires high precision large lens holders (?170 mm) at cryogenic temperatures (150K). The four lenses of the optical system are made of different materials: fused silica, CaF2, and LF5G15 that are mounted in a separate lens barrel design. Each lens has its separate mechanical interface to the lens barrel, the so called adaption ring. The performance of the lens holder design is verified by adapted test equipment and test facility including an optical metrology system. The characterization of the lens deformation and displacement (decenter, tilt) due to mechanical loads of the holder itself as well as thermally induced loads are driven by the required submicron precision range and the operational thermal condition. The surface deformation of the lens and its holder is verified by interferometric measurements, while tilt and position accuracy are measured by in-situ fibre based distance sensors. The selected distance measurement sensors have the capability to measure in a few mm range with submicron resolution in ultra high vacuum, in vibration environments and at liquid nitrogen temperatures and below. The calibration of the measurement system is of crucial importance: impacts such as temperature fluctuation, surface roughness, surface reflectivity, straylight effects, etc. on the measured distance are carefully calibrated. Inbuilt thermal expansion effects of the fibre sensors are characterized and proven with lens dummy with quasi zero CTE. The paper presents the test results and measured performance of the high precision large cryogenic lens holders attained by the metrology system. These results are presented on behalf of the EUCLID consortium.

Gal, C.; Reutlinger, A.; Boesz, A.; Leberle, T.; Mottaghibonab, A.; Eckert, P.; Dubowy, M.; Gebler, H.; Grupp, F.; Geis, N.; Bode, A.; Katterloher, R.; Bender, R.

2012-09-01

350

Portable narcotics detector and the results obtained in field tests  

NASA Astrophysics Data System (ADS)

A compact integrated narcotics detection instrument (CINDI) has been developed at NOVA R&D, Inc. with funding provided by the U.S. Coast Guard. CINDI is designed as a portable sensitive neutron backscatter detector which has excellent penetration for thick and high Z compartment barriers. It also has a highly sensitive detection system for backscattered neutrons and, therefore, uses a very weak californium-252 neutron source. Neutrons backscatter profusely from materials that have a large hydrogen content, such as narcotics. The rate of backscattered neutrons detected is analyzed by a microprocessor and displayed on the control panel. The operator guides the detector along a suspected area and displays in real time the backscattered neutron rate. CINDI is capable of detecting narcotics effectively behind panels made of steel, wood, fiberglass, or even lead-lined materials. This makes it useful for inspecting marine vessels, ship bulkheads, automobiles, structure walls or small sealed containers. The strong response of CINDI to hydrogen-rich materials such as narcotics makes it an effective tool for detecting concealed drugs. Its response has been field tested by NOVA, the U.S. Coast Guard and Brewt Power Systems. The results of the tests show excellent response and specificity to narcotic drugs. Several large shipments of concealed drugs have been discovered during these trials and the results are presented and discussed.

Tumer, Tumay O.; Su, Chih-Wu; Kaplan, Christopher R.; Rigdon, Stephen W.

1997-02-01

351

TMED-4 INTERIM REPORT PURE ZR EQUILIBRIUM TEST RESULTS  

SciTech Connect

Due to higher than expected permeation rates in the production of tritium in the TVA, a development and testing program was implemented to develop the understanding of why the higher rates were occurring. In addition, improved data are needed for both the design as well as the predictive models. One part of the program was to determine the equilibrium pressure of hydrogen and tritium over NPZ (1). During the course of this testing, some curious results were discovered (2) compared to the published literature data (3). Due to these apparently results, a follow-on task was undertaken to determine the equilibrium pressure of protium and deuterium over pure zirconium. A series of experiments were conducted to determine equilibrium pressures and isotherm data for the zirconium - protium and zirconium - deuterium systems. The data match the published literature data reasonably well with the plateau extending to loadings of about 1.4. There is a significant pressure rise for loadings greater than 1.7.

Korinko, P.; Morgan, G.

2010-12-17

352

Direct containment heating: Surtsey test results and models  

SciTech Connect

Direct containment heating is one of the processes that can lead to containment rupture early in a severe reactor accident. The origins and the current understanding of this process are surveyed. Three issues arise in connection with direct containment heating -- threats to containment integrity posed by transfer of energy to the containment atmosphere from dispersed core debris or the generation of hydrogen by reactions of core debris with steam, and the formation of radioactive aerosols available for release from the plant should containment integrity be lost. The two threats to containment integrity have different characteristics. Energy exchange between core debris and the atmosphere depends on the long range dispersal of the debris and the atmosphere depends on the long range dispersal of the debris and can be affected by interactions of the debris with structures and co-dispersed water. Hydrogen generation is dependent on the detailed flows of debris and steam within and near the reactor cavity. Results of four experiments in the Surtsey test facility to explore energy exchange with the atmosphere are presented. These experiments suggest ''single particle'' models of direct heating over-predict the threat to containment integrity and that debris/structure interactions can enhance heating of the containment atmosphere. Results of test to establish the low pressure cut-off to direct heating are reported. 23 refs., 2 figs., 1 tab.

Tarbell, W.W.; Nichols, R.T.; Pilch, M.; Brockmann, J.E.; Powers, D.A.

1988-08-01

353

Test Results of a Nb3Sn Wind/React 'Stress-Managed' BlockDipole  

SciTech Connect

A second phase of a highfield dipole technology developmenthas been tested. A Nb3Sn block-coil model dipole was fabricated, usingmagnetic mirror geometry and wind/react coil technology. The primaryobjective of this phase was to make a first experimental test of thestress-management strategy pioneered at Texas A&M. In this strategy ahigh-strength support matrix is integrated with the windings to interceptLorentz stress from the inner winding so that it does not accumulate inthe outer winding. The magnet attained a field that was consistent withshort sample limit on the first quench; there was no training. Thedecoupling of Lorentz stress between inner and outer windings wasvalidated. In ramp rate studies the magnet exhibited a remarkablerobustness in rapid ramping operation. It reached 85 percent of shortsample(ss) current even while ramping 2-3 T/s. This robustness isattributed to the orientation of the Rutherford cables parallel to thefield in the windings, instead of the transverse orientation thatcharacterizes common dipole designs. Test results are presented and thenext development phase plans are discussed.

McInturff, A.; Bish, P.; Blackburn, R.; Diaczenko, N.; Elliott,T.; Hafalia Jr., R.; Henchel, W.; Jaisle, A.; Lau, W.; Lietzke, A.; McIntyre, P.; Noyes, P.; Nyman, M.; Sattarov, A.; Sattarov, A.

2006-08-25

354

D-0 North End Cap Calorimeter Cold Test Results  

SciTech Connect

The North endcap calorimeter vessel was recieved on July 1, 1990. A cooldown of the pressure vessel with liquid nitrogen was performed on July 10-11 to check the vessel's integrity. With the pressure vessel cold, the insulating vacuum was monitored for leaks. Through out the testing, the insulating vacuum remained good and the vessel passed the test. The cold test was carried out per the procedures of D-Zero engineering note 3740.220-EN-250. The test was very similar to the cold test performed on the Central Calorimeter in October of 1987. Reference D-Zero engineering notes 3740.210-EN-122, 3740.000-EN107, and 3740.210-EN-110 for information about the CC cold test. The insulating vacuum space was pumped on while equipment was being connected to the pressure vessel. Two hours after starting to pump with the blower the vacuum space pressure was at about 210 microns. Pumping on the vacuum space for the next 15 hours showed no progress and a leak detector was connected to the pumping line. A leak check showed a leak in a thermocouple feedthru on the vacuum space relief plate. After fixing the leak, the pressure dropped to 16 microns in less than one hour. A rate of rise test was performed starting at a pressure of 13 microns. The pressure rose to 39 microns within 8 minutes and then only rose to 43 microns in 2.5 hours (1.6 microns/hour). After all connections were made to the pressure vessel, a vacuum pump with an estimated effective pumping speed of about 70 scfm was valved on. The lowest pressure achieved after 2 days of pumping was 80 microns. Valving out the pump for 30 minutes resulted in a 5 micron per minute rate of rise. The rate of rise was considered acceptable since there were known leak paths through the bolts of the signal ports. The EC North vessel was rolled outside of Lab A in preparation for a 5000 gallon liquid nitrogen trailer which arrived July, 10 at 8:00am. Before filling the vessel, the vacuum space pump was valved off. The pressure in the vacuum space was 12 microns at that point. During the next 24 hours of the test, the vacuum space pressure decreased to 5 microns. A plot of the vacuum space pressure with time is included at the end of this note. The liquid nitrogen was pressure transferred from the trailer at 29 psig to the pressure vessel at 1 psig for ten hours. At that time there was sufficient (16-inch) of liquid nitrogen in the vessel to turn the LN2 trailer delivery pump on. Thirteen and one half hours after starting the fill, the vessel had 50-inch of LN2 collected. During the latter part of the filling, about twelve loud metallic bangs were heard. The noises came at random intervals with sometimes five minutes between and other times an hour between. The best way to describe the sound is to imagine the sound made if someone was trapped inside the vessel with a baseball bat and took a good swing. The trailer was disconnected and the the vessel was left overnight for ten hours. Due to the slow LN2 fill rate, the temperature gradient in the pressure vessel shell was not very large, only about 25 kelvin difference was found from a RTD in the warm-up nozzle of the vessel and the resistors of the liquid level probe. A temperature versus time graph is included at the end of this note.

Michael, J.; /Fermilab

1990-08-02

355

Aeronautical satellite data link concept, design, and flight test results  

NASA Astrophysics Data System (ADS)

The MITRE Corporation has conducted a three-year study of aeronautical satellite communications that culminated in a set of flight tests over the North Atlantic during August of 1985. The flight tests required the cooperation of four organizations in addition to MITRE: The Communications Satellite Corporation (COMSAT), Rockwell International, Ball Aerospace and Avantek. A test aircraft, equipped with a specially designed satellite data link terminal and antenna configuration, was flown from Cedar Rapids, Iowa across the North Atlantic to Iceland, and north of Iceland to 75° latitude. The purpose of the flight tests was to measure the performance of a full duplex aeronautical satellite data link (ASDL) using the International Maritime Satellite Organization's (INMARSAT's) spacecraft and earth station at Southbury, Connecticut, and to demonstrate potential applications. The data link operates at 200 bits-per-second (bps), uses forward error correction (FEC) coding, and employs a terminal monitor that provides interfaces to on-board avionics, data recording equipment, and an industry-standard personal computer (PC). The PC serves as a user terminal as well as a real-time monitor of bit-error-rate (BER) performance. In addition to channel propagation and BER experiments, demonstrations of potential applications of an oceanic ASDL system were conducted. A standard commercial airline data link management unit (MU) was used to communicate data over the ASDL using standard protocols. The interface to the MU allowed access to data from two distinct navigation systems: an inertial navigation system (INS) and a Global Positioning System (GPS) receiver. Aircraft position data was transmitted from the aircraft to the earth station on an automatic basis to simulate automatic dependent surveillance (ADS) of oceanic air space. This paper is divided into three sections: 1) A discussion of background issues, such as the motivation for the reported research and development, and important operational ASDL system design topics; 2) a detailed description of the developed ASDL design; and 3) a description of the test program and a preliminary summary of the results.

Anderson, Samuel S.; Hogle, Lawrence H.; Breitwisch, Ronald; Edwards, C. P.; Hamilton, Robert J.; Lipke, David W.

356

Robust multiplatform RF emitter localization  

NASA Astrophysics Data System (ADS)

In recent years, position based services has increase. Thus, recent developments in communications and RF technology have enabled system concept formulations and designs for low-cost radar systems using state-of-the-art software radio modules. This research is done to investigate a novel multi-platform RF emitter localization technique denoted as Position-Adaptive RF Direction Finding (PADF). The formulation is based on the investigation of iterative path-loss (i.e., Path Loss Exponent, or PLE) metrics estimates that are measured across multiple platforms in order to autonomously adapt (i.e. self-adjust) of the location of each distributed/cooperative platform. Experiments conducted at the Air-Force Research laboratory (AFRL) indicate that this position-adaptive approach exhibits potential for accurate emitter localization in challenging embedded multipath environments such as in urban environments. The focus of this paper is on the robustness of the distributed approach to RF-based location tracking. In order to localize the transmitter, we use the Received Signal Strength Indicator (RSSI) data to approximate distance from the transmitter to the revolving receivers. We provide an algorithm for on-line estimation of the Path Loss Exponent (PLE) that is used in modeling the distance based on Received Signal Strength (RSS) measurements. The emitter position estimation is calculated based on surrounding sensors RSS values using Least-Square Estimation (LSE). The PADF has been tested on a number of different configurations in the laboratory via the design and implementation of four IRIS wireless sensor nodes as receivers and one hidden sensor as a transmitter during the localization phase. The robustness of detecting the transmitters position is initiated by getting the RSSI data through experiments and then data manipulation in MATLAB will determine the robustness of each node and ultimately that of each configuration. The parameters that are used in the functions are the median values of RSSI and rms values. From the result it is determined which configurations possess high robustness. High values obtained from the robustness function indicate high robustness, while low values indicate lower robustness.

Al Issa, Huthaifa; Ordóńez, Raúl

2012-05-01

357

Results of the Centralia Underground Coal Gasification Field Test.  

National Technical Information Service (NTIS)

The Centralia Partial Seam CRIP (PSC) test described herein is the second test conducted at this site. The first test was done in the fall and winter of 1981 to 1982 when the Large Block (LBK) tests were successfully completed at the Centralia, Washington...

C. B. Thorsness D. R. Stephens R. J. Cena R. W. Hill

1984-01-01

358

Results of the Centralia underground coal gasification field test  

Microsoft Academic Search

The Centralia Partial-Seam CRIP (controlled retracting injection point) test is described which herein is the second test conducted at this site. The first test was done in the fall and winter of 1981-82 when the Large Block (LBK) tests were successfully completed at the Centralia, Washington site. Three distinct periods of gasification were observed. The initial period in which the

R. W. Hill; R. J. Cena; D. R. Stephens; C. B. Thorsness

1985-01-01

359

Multivariate factorial analysis to design a robust batch leaching test to assess the volcanic ash geochemical hazard.  

PubMed

A method to obtain robust information on short term leaching behaviour of volcanic ashes has been developed independently on the sample age. A mixed factorial design (MFD) was employed as a multivariate strategy for the evaluation of the effects of selected control factors and their interactions (amount of sample (A), contact time (B), and liquid to solid ratio or L/S (C)) on the leaching process of selected metals (Na, K, Mg, Ca, Si, Al, V, Mn, Fe, and Co) and anions (Cl(-) and SO(4)(2-)). Box plots of the data acquired were used to evaluate the reproducibility achieved at different experimental conditions. Both the amount of sample (A) and leaching time (B) had a significant effect on the element stripping whereas the L/S ratio influenced only few elements. The lowest dispersion values have been observed when 1.0 g was leached with an L/S ratio equal to 10, shaking during 4 h. The entire method is completed within few hours, and it is simple, feasible and reliable in laboratory conditions. PMID:22365142

Ruggieri, Flavia; Gil, Raúl A; Fernandez-Turiel, Jose-Luis; Saavedra, Julio; Gimeno, Domingo; Lobo, Agustin; Martinez, Luis D; Rodriguez-Gonzalez, Alejandro

2012-02-07

360

Nondestructive tablet hardness testing by near-infrared spectroscopy: a new and robust spectral best-fit algorithm  

Microsoft Academic Search

A new algorithm using common statistics was proposed for nondestructive near-infrared (near-IR) spectroscopic tablet hardness testing over a range of tablet potencies. The spectral features that allow near-IR tablet hardness testing were evaluated. Cimetidine tablets of 1–20% potency and 1–7 kp hardness were used for the development and testing of a new spectral best-fit algorithm for tablet hardness prediction. Actual

John D Kirsch; James K Drennen

1999-01-01

361

Robust recognition of white blood cell images  

Microsoft Academic Search

The objective of this work is to investigate the white blood cell (WBC) image recognition problem at all stages. A robust and effective method for automatic WBC differentiation, based on both statistical pattern recognition and neural net approaches, is presented. We demonstrate well-evaluated results ranging from image scene segmentation techniques to recognition details. Recognition accuracy on the test set of

V. A. Kovalev; A. Y. Grigoriev; Hyo-Sok Ahn

1996-01-01

362

Results of initial testing of the four stage RHEPP accelerator  

SciTech Connect

The low power checkout of the Repetitive High Energy Pulsed Power (RHEPP) pulse forming line (PFL) and linear induction voltage adder (LIVA) is complete. The accelerator has four LIVA cavities driven via coaxial cables from the PFL that utilizes magnetic switching to provide a 250-kV, 60-ns output pulse. The PFL is repetitively charged by a ten stage Marx generator to operate from single shot to five Hz. Results from these tests of the initial four stage RHEPP accelerator are presented and compared with design simulations. Data from a resistive cavity load and from preliminary electron diode experiments are included. While core temperatures remain low during five Hz operation, they are monitored and compared to extrapolated predictions from the design modeling. Performance of the Metglas magnetic switches and blocking cores, the voltage addition in the four LIVA cavities, and system efficiencies are discussed. Sources of discrepancies from the original design models are identified, and improved models that account for the discrepancies are presented. Improved performance potential based on these models is discussed. Plans for future testing of the 1-MV system up to 120 kW at 120 Hz and for the full system with ten LIVA cavities are presented.

Johnson, D.L.; Reed, K.W.; Harjes, H.C.

1993-08-01

363

Metrology and Tests beamline at SOLEIL Design and first results  

SciTech Connect

The objectives of this project is install at the 2.75 GeV SOLEIL synchrotron radiation source a calibration and metrology test facility for the R and D of optical components and detectors. We have build, on a bending magnet, two branches to cover an energy range from few eV to 28 keV and give access to white beam. This installation will first address the needs of the SOLEIL experimental groups(Optics and Detectors)and will be used by a large community. This beamline will also be valuable as a general-purpose beamline to prepare, test and set up a wide range of experiments in the field of Astrophysics, laser plasma etc...A complementary important aspect of this installation is the realization of primary standard: the metrology beamline of SOLEIL could become the national primary standard source in collaboration with the Laboratoire National d'Essais(LNE)and help in the design and characterization of several diagnostics for the Megajoule Laser in Bordeaux in collaboration with the CEA DIF. The beamline has been designed to provide great flexibility. In this paper, we describe the beamline design, the end station instrumentation and give also some preliminary results.

Idir, Mourad; Mercere, Pascal; Moreno, Thierry; Delmotte, Aurelien; Dasilva, Paulo; Modi, Mohammed H. [Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin-BP 48 91192 GIF-sur-YVETTE CEDEX (France)

2010-06-23

364

PROTEC TM TEAR-OFFS: RESULTS OF LONG TERM TESTING  

SciTech Connect

The Savannah River National Laboratory (SRNL) has completed a series of tests (Phases 1 and 2) to assess the potential use of a Mylar{reg_sign} tear-off system as a primary or secondary protective barrier to minimize acid etching ('frosting'), accidental scratching, and/or radiation damage for shielded cells, glovebox, and/or chemical hood windows. Conceptually, thin, multi-layered sheets of Mylar (referred to throughout this report as the ProTec{trademark} tear-off system) can be directly applied to the shielded cell, glovebox, or hood sash window to serve as a secondary (or primary) barrier. Upon degradation of visual clarity due to accidental scratching, spills/splatters, and/or radiation damage, the outer layer (or sheet) of Mylar could be removed refreshing or restoring the view. Due to the multilayer aspect, the remaining Mylar layers would provide continued protection for the window from potential reoccurrences. Although the concept of using a tear-off system as a protective barrier is conceptually enticing, potential technical issues were identified and addressed as part of this phased study to support implementation of this type of system in the Defense Waste Processing Facility (DWPF). Specific test conditions of interest to the DWPF included the performance of the tear-off system exposed to or under the following conditions: (1) acid(s) (concentrated (28.9 M) HF, concentrated (15.9M) HNO{sub 3}, 6M HCl, and 0.6M H{sub 3}BO{sub 3}); (2) base (based on handling of radioactive sludges with pH of {approx}12-13); (3) gamma radiation (due to radioactive sources or materials being used in the analytical cells); (4) scratch resistance (simulating accidental scratching with the manipulators); and (5) in-situ testing (sample coupons exposed to actual field conditions in DWPF). The results of the Phase 1 study indicated that the ProTec tear-off concept (as a primary or secondary protective barrier) is a potential technical solution to prevent or retard excessive damage that would result from acid etching, base damage (as a result of a sludge spill or splatter), gamma radiation damage, and/or accidental scratching (due to manipulator/tool contact). Although identified as a potential solution, the Phase 1 testing was relatively short-term with exposure times up to 1-2 months for the acid and gamma radiation tests. Phase 2 testing included longer exposure times for the acid resistance (up to 456 days) and gamma radiation exposure (700 days with a cumulative gamma dose of {approx}3.1 x 10{sup 5} rad) assessments. The tear-off system continued to perform well in these longer-term acid resistance testing and gamma exposure conditions. Complete removal of the tear-offs after these long-term exposure times indicate that not only could visual clarity be restored but the mechanical integrity could be retained. The results also provided insight into the ability of the ProTec tear-off system to withstand the chemical and physical abuses expected in off-normal shielded cells operations. The conceptual erasing of scratches or marks by excessive manipulator abuse was demonstrated in the SRNL Shielded Cells mock-up facility through the removal of the outer layer tear-off with manipulators. In addition, the Phase 2 testing included an in-situ assessment of a prototype tear-off system in the DWPF Sampling Cells where the system was exposed to actual field conditions including radioactive sources, acidic and basic environments, dusting, and chemical cleaning solutions over a 5-6 month period. DWPF personnel were extremely satisfied with the performance (including the successful removal of 3 layers with manipulators) of the ProTec tear-off system under actual field conditions. The successful removal of the outer layer tear-offs with the manipulator, using tabs not specifically designed for remote operations, demonstrates that the system is 'manipulator-friendly' and could be implemented in a remote environment. The ability to remove the outer layer tear-off not only regains visual clarity but also reduces waste disposal volumes (i.e., dispo

Peeler, D

2008-07-24

365

Metrology and Tests beamline at SOLEIL Design and first results  

NASA Astrophysics Data System (ADS)

The objectives of this project is install at the 2.75 GeV SOLEIL synchrotron radiation source a calibration and metrology test facility for the R&D of optical components and detectors. We have build, on a bending magnet, two branches to cover an energy range from few eV to 28 keV and give access to white beam. This installation will first address the needs of the SOLEIL experimental groups (Optics and Detectors) and will be used by a large community. This beamline will also be valuable as a general-purpose beamline to prepare, test and set up a wide range of experiments in the field of Astrophysics, laser plasma etc ... A complementary important aspect of this installation is the realization of primary standard: the metrology beamline of SOLEIL could become the national primary standard source in collaboration with the Laboratoire National d'Essais (LNE) and help in the design and characterization of several diagnostics for the Megajoule Laser in Bordeaux in collaboration with the CEA DIF. The beamline has been designed to provide great flexibility. In this paper, we describe the beamline design, the end station instrumentation and give also some preliminary results.

Idir, Mourad; Mercere, Pascal; Moreno, Thierry; Delmotte, Aurélien; Dasilva, Paulo; Modi, Mohammed H.

2010-06-01

366

First Measurements and Results With a Stretched Wire Test Setup  

SciTech Connect

The LINAC Coherent Light Source [LCLS] is a free electron laser, designed to produce high brilliant X-ray beams using Self Amplified Spontaneous Emission [SASE]. Due to the physics of SASE, the electron beam has to be held very precisely on the same trajectory as the X-ray light beam generated by the undulator magnets. To optimize the SASE output, trajectory deviations between both beams have to be minimized to a few micrometers along the entire undulator section and held stable over the time period between beam-based-alignment processes. Consequently, extremely high position stability of all magnets in the undulator section is required to operate the LCLS successfully. The knowledge of any magnet movement exceeding few micrometers during periods of several weeks is essential for efficient X-ray generation. A well known principle of monitoring transverse component positions along beam lines is the application of stretched wires, associated with suitable wire position sensors and electronics. The particular challenge at LCLS is the required wire system performance in conjunction with the length of the undulator section and the large number of monitors. Verification of system stability and resolution under real conditions is the primary goal of this test setup. A stretched wire test setup has been implemented to gain experience for the final design of a wire system, which will meet the position monitoring requirements in the LCLS undulator section. The report briefly introduces the system's architecture and describes first measurements and results.

Peters, Franz

2010-12-13

367

Field testing results for the strategic petroleum reserve pipeline corrosion control program  

SciTech Connect

Results of two studies conducted as part of the Strategic Petroleum Reserve (SPR) Pipeline Corrosion Control Program are reported. These studies focused on evaluation of rotary-applied concrete materials for internal pipeline protection against the erosive and corrosive effects of flowing brine. The study also included evaluation of liners applied by hand on pipe pieces that cannot be lined by rotary methods. Such pipe pieces include tees, elbows and flanged pipe sections. Results are reported from a corrosion survey of 17 different liner formulations tested at the-Big-Rill SPR Site. Testing consisted of electrochemical corrosion rate measurements made on lined pipe sections exposed, in a test manifold, to flowing SPR generated fluids. Testing also involved cumulative immersion exposure where samples were exposed to static site-generated brine for increasing periods of time. Samples were returned to the laboratory for various diagnostic analyses. Results of this study showed that standard calcium silicate concrete (API RP10E) and a rotary calcium aluminate concrete formulation were excellent performers. Hand-lined pipe pieces did not provide as much corrosion protection. The focus of the second part of the study was on further evaluation of the calcium silicate, calcium aluminate and hand-applied liners in actual SPR equipment and service. It was a further objective to assess the practicality of electrochemical impedance spectroscopy (EIS) for field corrosion monitoring of concrete lined pipe compared to the more well-known linear polarization technique. This study showed that concrete linings reduced the corrosion rate for bare steel from 10 to 15 mils per year to 1 mil per year or less. Again, the hand-applied liners did not provide as much corrosion protection as the rotary-applied liners. The EIS technique was found to be robust for field corrosion measurements. Mechanistic and kinetic corrosion rate data were reliably obtained.

Buchheit, R.G.; Maestas, L.M.; Hinkebein, T.E.

1998-02-01

368

Np Behavior in Synthesized Uranyl Phases: Results of Initial Tests  

SciTech Connect

Initial tests were completed at Pacific Northwest National Laboratory for developing a potential mechanism to retard the mobility of neptunium at the Yucca Mountain repository. Neptunium is of concern because of its mobility in the environment and long half life, contributing a large percentage of the potential dose over extended times at the perimeter of the site. The mobility of neptunium could be retarded by associating with uranium mineral phases. The following four uranium mineral phases were examined and are potential secondary phases expected to form as a result of interactions of spent nuclear fuel with the local environment: meta-schoepite, studtite, uranophane, and sodium boltwoodite. The fate of the neptunium was examined in these synthetic experiments.

Friese, Judah I.; Douglas, Matthew; McNamara, Bruce K.; Clark, Sue B.; Hanson, Brady D.

2004-09-28

369

Effect of test method on pop plot results  

NASA Astrophysics Data System (ADS)

CTH hydrocode simulations performed for this study demonstrate that test method can affect shock reactivity measurements as displayed on the POP plot. For run distances greater than about 7 mm and pressures lower than 50 kbar, the run distances produced with the use of a flyer plate were shorter than those produced by a plane wave lens system. In contrast, the run distances were similar for pressures above 50 kbar. The plane wave lens system simulated was based on a 4' PWL used at the Army Research Laboratory and a combination of buffer plates. The sample explosive was taken to be Composition C4. Other simulations showed that measuring an average velocity of the buffer plate outside the center of the buffer plate will result in lower input pressures being calculated from the Rankine-Hugoniot jump conditions than those that would be calculated if the corresponding peak initial velocity at the buffer plate center was used.

Sutherland, Gerrit

2012-03-01

370

Test results of an active magnetic regenerative refrigerator  

NASA Astrophysics Data System (ADS)

The principle of the Active Magnetic Regenerator (AMR) is tested with an experimental refrigerator designed to operate within the temperature range of about 4 to 80 K. Applications, including helium and hydrogen liquefaction and hydrogen slush generation, are envisioned. The device uses a single moveable superconducting solenoidal magnet in persistent mode to alternately charge and discharge two in-line beds of magnetic material. Between magnet motions, a double-acting piston displacer moves heat transfer fluid in the form of helium gas through the beds, absorbing heat at the cold heat exchanger and rejecting heat at the hot heat exchanger. A description of the refrigerator and performance results are presented. Comparisons to a detailed AMR model are shown.

Degregoria, A. J.; Feuling, L. J.; Laatsch, J. F.; Rowe, J. R.; Trueblood, J. R.; Wang, A. A.

371

The tritium systems test assembly: Overview and recent results  

SciTech Connect

The fusion technology development program for tritium in the US is centered around the Tritium Systems Test Assembly (TSTA) at Los Alamos National Laboratory. The TSTA is a full-scale system of reactor exhaust gas reprocessing for an ITER-sized machine. That is, TSTA has the capacity to process tritium in a closed loop mode at the rate of 1 kg per day, requiring a tritium inventory of about 100 g. The TSTA program also interacts with all other tritium-related fusion technology programs in the US and all major programs abroad. This report summarizes the current status, results and interactions of the TSTA. Special emphasis is given to operations in May/June using large compound cryopumps that completed the fuel loop integration of all TSTA subsystems for the first time. 6 refs., 2 figs.

Bartlit, J.R.; Anderson, J.L.

1988-01-01

372

Preliminary Test Results for the MICE Spectrometer Superconducting Solenoids  

SciTech Connect

This report describes the MICE spectrometer solenoids as built. Each magnet consists of five superconducting coils. Two coils are used to tune the beam going from or to the MICE spectrometer from the rest of the MICE cooling channel. Three spectrometer coils (two end coils and a long center coil) are used to create a uniform 4 T field (to {+-}0.3 percent) over a length of 1.0 m within a diameter of 0.3 m. The three-coil spectrometer set is connected in series. The two end coils use small power supplies to tune the uniform field region where the scintillating fiber tracker is located. This paper will present the results of the preliminary testing of the first spectrometer solenoid.

Virostek, Steve P.; Green, Michael A; Li, Derun; Zisman, Michael S.; Wang, S.T.; Wahrer, R.; Taylor, Clyde; Lu, X.; Chen, J. Y.; Wang, Mimi; Juang, Tiki

2008-08-02

373

Combining difference and equivalence test results in spatial maps  

PubMed Central

Background Regionally partitioned health indicator values are commonly presented in choropleth maps. Policymakers and health authorities use them among others for health reporting, demand planning and quality assessment. Quite often there are concerns whether the health situation in certain areas can be considered different or equivalent to a reference value. Results Highlighting statistically significant areas enables the statement that these areas differ from the reference value. However, this approach does not allow conclusions which areas are sufficiently close to the reference value, although these are crucial for health policy making as well. In order to overcome this weakness a combined integration of statistical difference and equivalence tests into choropleth maps is suggested and the approach is exemplified with health data of Austrian newborns. Conclusions The suggested method will improve the interpretability of choropleth maps for policymakers and health authorities.

2011-01-01

374

Results of field testing of radioactive waste forms using lysimeters  

SciTech Connect

The Field Lysimeter Investigation: Low-Level Waste Data Base Development Program is obtaining informaiton on the performance of radioactive waste in a disposal environment. Waste forms fabricated using ion-exchange resins from EPICOR-II prefilters employed in the cleanup of the Three Mile Island (TMI) Nuclear Power Station are being tested to develop a low-level waste data base and to obtain information on survivability of waste forms in a disposal environment. In this paper, radionuclide releases from waste forms in the first six years of sampling are presented and discussed. Application of lysimeter data to use in performance assessment models is presented. Initial results from use of data in a performance assessment model are discussed.

McConnell, J.W., Jr.; Rogers, R.D. [Idaho National Engineering Lab., Idaho Falls, ID (United States); Jastrow, J.D. [Argonne National Lab., IL (United States); Wickliff, D.S. [Oak Ridge National Lab., TN (United States)

1992-08-01

375

Results of field testing of radioactive waste forms using lysimeters  

SciTech Connect

The Field Lysimeter Investigation: Low-Level Waste Data Base Development Program is obtaining informaiton on the performance of radioactive waste in a disposal environment. Waste forms fabricated using ion-exchange resins from EPICOR-II prefilters employed in the cleanup of the Three Mile Island (TMI) Nuclear Power Station are being tested to develop a low-level waste data base and to obtain information on survivability of waste forms in a disposal environment. In this paper, radionuclide releases from waste forms in the first six years of sampling are presented and discussed. Application of lysimeter data to use in performance assessment models is presented. Initial results from use of data in a performance assessment model are discussed.

McConnell, J.W., Jr.; Rogers, R.D. (Idaho National Engineering Lab., Idaho Falls, ID (United States)); Jastrow, J.D. (Argonne National Lab., IL (United States)); Wickliff, D.S. (Oak Ridge National Lab., TN (United States))

1992-01-01

376

Aeronautical satellite data link concept, design, and flight test results  

NASA Astrophysics Data System (ADS)

The performance of a full duplex aeronautical satellite data link (ASDL), using Inmarsat's spacecraft and earth station near Southbury, CT, and its potential applications are described. The ASDL operates at 200 bits/s, uses forward error correction (FEC) coding, and employs a terminal monitor, data recording equipment, and a personal computer, which serves as a user terminal as well as a real-time monitor of bit-error-rate (BER) performance. A detailed description of the operational ASDL system design topics and the developed ASDL design, as well as the test program (TP), are presented. The results of the ASDL TP indicate that the surface-mounted microstrip aircraft antennas (AAs), the RF transceiver, the modem, and the FEC algorithms are adequate to achieve acceptable BER performance level even at the edges of the Inmarsat coverage extremes and at unfavorable AA orientations.

Anderson, S. S.; Hogle, L. H.; Breitwisch, R.; Edwards, C. P.; Hamilton, R. J.

1985-10-01

377

Automotive RF immunity test set-up analysis: Why test results can't compare …  

Microsoft Academic Search

Though the automotive RF emission and RF immunity requirements are highly justifiable, the application of those requirements in an non-intended manner leads to false conclusions and unnecessary redesigns for the electronics involved. When the test results become too dependent upon the test set-up itself, inter-laboratory comparison as well as the search for design solutions and possible correlation with other measurement

Mart Coenen; Hugo Pues; Thierry Bousquet

2011-01-01

378

Salmonella mutagenicity tests. II. Results from the testing of 270 chemicals  

SciTech Connect

This publication includes data of Salmonella mutagenicity results on 270 coded chemicals, encompassing 329 tests performed by three laboratories under contract to the National Toxicology Program (NTP). The preincubation modification of the Salmonella/mammalian microsome assay was used to test chemicals in up to five Salmonella strains in the presence and absence of rat and hamster liver S-9. With a few exceptions, inter- and intralaboratory reproducibility was good.

Mortelmans, K.; Haworth, S.; Lawlor, T.; Speck, W.; Tainer, B.; Zeiger, E.

1986-01-01

379

Seasons can influence the results of the methacholine challenge test  

PubMed Central

OBJECTIVE: This study tried to evaluate whether a methacholine test may be influenced by the seasons. METHODS: We considered 4826 consecutive subjects with normal spirometry (50.53% males; age: 35.1±16.2; forced expiratory volume in one second: 99.5±13.0%) who underwent a methacholine test for suspected asthma symptoms between 2000 and 2010. They were subdivided into four groups, like the seasons, according to the test dates. RESULTS: A total of 1981 (41%) resulted normal (no PD20 was obtained with 2400 ?g of methacholine); the others showed a mean LogPD20 of 2.52±0.5 ?g. The number of subjects with bronchial hyper-responsiveness (BHR) found in autumn (789, 62.3%) was higher than in summer (583, 56.7%; P=0.03). A higher number of females and overweight/obese subjects showed a BHR in autumn compared with the other seasons. The spring mean LogPD20 value (2.48±0.48 ?g) was lower if compared with the one measured in summer (2.59±0.49 ?g; P=0.05). LogPD20 value was lower in females and non-smokers in spring compared with summer (P<0.05). Overweight/obese non-smokers showed a lower LogPD20 in spring and autumn compared with that in summer (P<0.05). Autumn was a risk factor (OR: 1.378; P=0.001) for BHR (using a PD20 <2 400 ?g as BHR limit), while spring (OR: 1.330; P=0.021) and autumn (OR: 1.331; P=0.020) were risk factors for a more severe BHR (using a PD20 <400 ?g as BHR limit). CONCLUSION: There was a higher probability of finding BHR in outpatients with suspected asthma in autumn and spring compared with summer. Spring is the season where BHR may be more severe. Females and overweight/obese subjects were those mainly involved in this seasonal variability of BHR.

Sposato, Bruno; Scalese, Marco; Pammolli, Andrea; Scala, Raffaele; Naldi, Mario

2012-01-01

380

Results of Detailed Hydrologic Characterization Tests - Fiscal Year 2000  

SciTech Connect

This report provides the resluts of detailed hydrologic characterization tests conducted within eleven Hanford Site wells during fiscal year 2000. Detailed characterization tests performed included groundwater-flow characterization; barometric response evaluation; slug tests; single-well tracer tests; constant-rate pumping tests; and in-well, vertical flow tests. Hydraulic property estimates obtained from the detailed hydrologic tests include transmissivity; hydraulic conductivity; specific yield; effective porosity; in-well, lateral flow velocity; aquifer-flow velocity; vertical distribution of hydraulic conductivity (within the well-screen section); and in-well, verticla flow velocity. In addition, local groundwater-flow characteristics (i.e., hydraulic gradient and flow direction) were determined for four sites where detailed well testing was performed.

Spane, Frank A.; Thorne, Paul D.; Newcomer, Darrell R.

2001-05-15

381

Drug and Alcohol Testing Results 1995 Annual Report.  

National Technical Information Service (NTIS)

The Report is a compilation and analysis of mass transit drug and alcohol testing reported by transit systems in the United States during 1995. The report covers testing for alcohol and the following drug types: marijuana (THC), cocaine, phencyclidines (P...

J. Ault P. Berty K. Browning B. Center R. Silver

1997-01-01

382

Results of Graphite-Polyimide Isogrid Panel Testing.  

National Technical Information Service (NTIS)

A procedure was developed for fabricating short-fiber HTS graphite and NR150B2 polyimide resin into an isogrid configuration. After fabrication, the panels were subjected to structural analysis and testing. The testing program is described.

D. O. Douglas M. W. Hyer

1977-01-01

383

Tray Pack Improved Durability Packaging Rough Handling Test Results.  

National Technical Information Service (NTIS)

The causes of damage to Tray Pack containers during rough handling were determined. Several concepts for increasing the stiffness of the Tray Pack container were developed. Prototypes were fabricated and tested. Shipping containers were tested for their a...

R. D. Cummings

1985-01-01

384

Statistical analysis of the Blizzard Challenge 2007 listening test results  

Microsoft Academic Search

Blizzard 2007 is the third Blizzard Challenge, in which partic- ipants build voices from a common dataset. A large listening test is conducted which allows comparison of systems in terms of naturalness and intelligibility. New sections were added to the listening test for 2007 to test the perceived similarity of the speaker's identity between natural and synthetic speech. In this

Robert A. J. Clark; Monika Podsiado; Mark Fraser; Catherine Mayo; Simon King

2007-01-01

385

Covert testing at airports: Exploring methodology and results  

Microsoft Academic Search

Large efforts are made in order to enhance human factors in airport security, but one very important area, namely covert or infiltration tests, are often neglected. Covert tests are most important not only for quality control and risk analysis, but also for training purposes, such as for example the training of appropriate reactions in dangerous situations. Therefore, conducting covert tests

Olive Emil Wetter; Diana Hardmeier; Franziska Hofer

2008-01-01

386

Experimental results from an automatic test case generator  

Microsoft Academic Search

Constraint-based testing is a novel way of generating test data to detect specific types of common programming faults. The conditions under which faults will be detected are encoded as mathematical systems of constraints in terms of program symbols. A set of tools, collectively called Godzilla, has been implemented that automatically generates constraint systems and solves them to create test cases

Richard A. DeMillo; A. Jefferson Offutt

1993-01-01

387

2007 Nissan Altima-7982 Hybrid Electric Vehicle Battery Test Results.  

National Technical Information Service (NTIS)

The U.S. Department of Energy's Advanced Vehicle Testing Activity conducts several different types of tests on hybrid electric vehicles (HEVs), including testing the HEV batteries when both the vehicles and batteries are new and at the conclusion of 160,0...

C. Motloch J. Francfort T. Gray

2010-01-01

388

2007 Nissan Altima-2351 Hybrid Electric Vehicle Battery Test Results.  

National Technical Information Service (NTIS)

The U.S. Department of Energy's Advanced Vehicle Testing Activity conducts several different types of tests on hybrid electric vehicles (HEVs), including testing the HEV batteries when both the vehicles and batteries are new and at the conclusion of 160,0...

C. Motloch J. Francfort T. Gray

2010-01-01

389

D-0 North End Cap Calorimeter Cold Test Results  

Microsoft Academic Search

The North endcap calorimeter vessel was recieved on July 1, 1990. A cooldown of the pressure vessel with liquid nitrogen was performed on July 10-11 to check the vessel's integrity. With the pressure vessel cold, the insulating vacuum was monitored for leaks. Through out the testing, the insulating vacuum remained good and the vessel passed the test. The cold test

J. Michael

1990-01-01

390

Cross-cooled dehumidifier model test results and computer simulations  

Microsoft Academic Search

Research on the development of a solar operated cross-cooled desiccant cooling system is described. A 15 cm x 15 cm x 15 cm (6'' x 6'' x 6'') cross-cooled silica gel desiccant dehumidifier model was designed, built and tested. The process of producing the silica gel sheets, the design and construction of the unit, the test setup and the test

V. Mei; Z. Lavan

1979-01-01

391

Delaware Student Testing Program: A Score Results Guide for Educators.  

ERIC Educational Resources Information Center

|This guide contains materials to help Delaware educators understand and use reports from the Delaware Student Testing Program (DSTP). The DSTP tests are tied to the Delaware content standards that define the knowledge and skills required for students to progress beyond high school. In spring 2003, the DSTP reading, writing, and mathematics tests

Delaware State Dept. of Education, Dover. Assessment and Accountability Branch.

392

Design and test of a robust multi-channel programmable sensor interface circuit for use in extreme environments  

SciTech Connect

This article describes the design of a sensor interface circuit for the amplification of voltages and currents. The created PCB was tested at high temperatures and under gamma irradiation. Two different operational amplifiers were compared. (authors)

Van Cutsem, K. [Ghent Univ., Ghent (Belgium); De Cock, W. [Advanced Nuclear Systems Inst., Belgian Nuclear Research Center SCK-CEN, Mol (Belgium); Tavernier, S. [Dept. of Physics, Vrije Universiteit Brussel VUB, Brussels (Belgium)

2011-07-01

393

Test results on systems developed for the SST-1 tokamak  

NASA Astrophysics Data System (ADS)

The steady state superconducting tokamak (SST-1) is a large aspect ratio tokamak, configured to run double null diverted plasmas with significant elongation (kgr) and triangularity (dgr). Superconducting (SC) magnets are deployed for both the toroidal and poloidal field coils in SST-1. A NbTi based cable-in-conduit conductor (CICC) has been fabricated by M/S Hitachi Cables Ltd., Japan under specification and supervision of the Institute for Plasma Research (IPR). The suitability of this CICC for the SST-1 magnets has been validated through test carried out on a model coil wound from this CICC. Toroidal and poloidal SC magnets have been fabricated and factory acceptance tests have been performed. SC magnets require liquid helium (LHe) cooled current leads, electrical isolators at LHe temperature, superconducting bus bars and LHe transfer lines. Full scale prototypes of these have been developed and tested successfully. SC magnets will be cooled to 4.5 K by forced flow of supercritical helium through the CICC. A 1 kW grade liquefier/refrigerator has been installed and is in final stages of commissioning at IPR. SST-1 deploys a fully welded ultra high vacuum vessel, made up of 16 vessel sectors (VSs) having ports and 16 rings with {\\sf D} -shaped cross-section. To establish the fabrication methodology for this, a fullscale prototype of the vessel with two VSs and three rings has been fabricated and tested successfully. Based on this the fabrication of the VSs and rings is in final stage of fabrication. Liquid nitrogen cooled radiation shield are deployed between the vacuum vessel and SC magnets as well as SC magnets and cryostat, to minimize the radiation losses at the SC magnets. SST-1 will have three different high power radio frequency systems to additionally heat and non-inductively drive plasma current to sustain the plasma in steady state for a duration of up to 1000 s. Ion cyclotron resonance frequency (ICRF) and electron cyclotron resonance frequency (ECRF) systems will primarily be used for heating the plasma while lower hybrid waves will be used for non inductive lower hybrid current drive (LHCD). A neutral beam injection with peak power of 0.8 MW with variable beam energy in range of 10-80 keV will be used as additional auxiliary heating system. A number of prototypes for various critical components have confirmed the fabrication methodology. The fabrication of most of the subsystems is nearing completion and many components have already been accepted on site. Erection and installation of the base of the mechanical structure has already been initiated in the SST hall. This paper reports on the results of the tests on various prototypes and actual components to be used on SST-1 for various subsystems.

Bora, D.; SST-1 Team

2003-12-01

394

PHOSPHATE MANAGEMENT: FY2010 RESULTS OF PHOSPHATE PRECIPITATION TESTS  

SciTech Connect

The Phosphate Management program seeks to develop treatment options for caustic phosphate solutions resulting from the caustic leaching of the bismuth phosphate sludge. The SRNL subtask investigated the precipitation of phosphate salts from caustic solutions through addition of fluoride and by crystallization. The scoping tests examined the: precipitation of phosphate by the addition of sodium fluoride to form the sodium fluorophosphate double salt, Na{sub 7}F(PO{sub 4}){sub 2} {center_dot} 19H{sub 2}O, crystallization of phosphate by reducing the temperature of saturated phosphate solutions, and combinations of precipitation and crystallization. A simplified leachate simulant was used in the study produced by dissolving sodium phosphate in 1 M to 3.5 M sodium hydroxide solutions. The results show that all three processes; precipitation with sodium fluoride, crystallization, and combined precipitation/crystallization can be effective for removing large amounts of phosphate from solution. The combined process of precipitation/crystallization showed >90% removal of phosphate at all hydroxide concentrations when cooling a non-saturated phosphate solution from 65 C to 25 C. Based on the measured solubility of sodium phosphate, pH adjustment/caustic addition will also remove large amounts of phosphate from solution (>80%). For all three processes, the phosphate concentration in the caustic solution must be managed to keep the phosphate from becoming too concentrated and thereby potentially forming a solid mass of sodium phosphate after an effective phosphate removal process.

Hay, M.; King, W.

2011-04-04

395

KASCADE: Astrophysical results and tests of hadronic interaction models  

NASA Astrophysics Data System (ADS)

KASCADE is a multi-detector setup to get redundant information on single air shower basis. The information is used to perform multiparameter analyses to solve the threefold problem of the reconstruction of (i) the unknown primary energy, (ii) the primary mass, and (iii) to quantify the characteristics of the hadronic interactions in the air-shower development. In this talk recent results of the KASCADE data analyses are summarized concerning cosmic ray anisotropy studies, determination of flux spectra for different primary mass groups, and approaches to test hadronic interaction models. Neither large scale anisotropies nor point sources were found in the KASCADE data set. The energy spectra of the light element groups result in a knee-like bending and a steepening above the knee. The topology of the individual knee positions shows a dependency on the primary particle. Though no hadronic interaction model is fully able to describe the multi-parameter data of KASCADE consistently, the more recent models or improved versions of older models reproduce the data better than few years ago.

Haungs, A.; Antoni, T.; Apel, W. D.; Badea, A. F.; Bekk, K.; Bercuci, A.; Blümer, H.; Bozdog, H.; Brancus, I. M.; Büttner, C.; Chilingarian, A.; Daumiller, K.; Doll, P.; Engel, R.; Engler, J.; Feßler, F.; Gils, H. J.; Glasstetter, R.; Heck, D.; Hörandel, J. R.; Kampert, K.-H.; Klages, H. O.; Maier, G.; Mathes, H. J.; Mayer, H. J.; Milke, J.; Müller, M.; Obenland, R.; Oehlschläger, J.; Ostapchenko, S.; Petcu, M.; Rebel, H.; Risse, A.; Risse, M.; Roth, M.; Schatz, G.; Schieler, H.; Scholz, J.; Thouw, T.; Ulrich, H.; van Buren, J.; Vardanyan, A.; Weindl, A.; Wochele, J.; Zabierowski, J.

2006-01-01

396

Correlation of qualitative and quantitative results from testing respirator fit  

SciTech Connect

Three qualitative respirator fit tests were evaluated for their ability to measure respiratory protection adequately. The methods were the negative pressure test, the isoamyl acetate test, and the irritant smoke test. Each test was performed concurrently with a single qualitative fit test, the dioctylphthalate (DOP) test, during 274 half-mask and 274 full face piece wearings. Most (95%) of the tested study had adequately fitting respirators as determined by quantitative testing. Of these subjects, 96-100% passed the qualitative fit tests. Of the 5% of the study subjects with inadequately fitting half-mask respirators, 93-100% of the inadequate fits were detected by qualitative methods. Twenty-three to 46% of the poorly fitting full face masks were detected by qualitative methods. The probability of passing or failing a qualitative test with an inadequately fitting respirator can be estimated; however, the uncertainty associated with each estimate is largely due to the small number of study subjects with poorly fitting respirators.

Hardis, K.E.

1983-02-01

397

DEM integrity monitor experiment (DIME) flight test results  

NASA Astrophysics Data System (ADS)

This paper discusses flight test results of a Digital Elevation Model (DEM) integrity monitor. The DEM Integrity Monitor Experiment (DIME) was part of the NASA Synthetic Vision System (SVS) flight trials at Eagle-Vail, Colorado (EGE) in August/September, 2001. SVS provides pilots with either a Heads-down Display (HDD) or a Heads-up Display (HUD) containing aircraft state, guidance and navigation information, and a virtual depiction of the terrain as viewed 'from the cockpit'. SVS has the potential to improve flight safety by increasing the situational awareness (SA) in low to near zero-visibility conditions to a level of awareness similar to daytime clear-weather flying. This SA improvement not only enables low-visibility operations, but may also reduce the likelihood of Controlled Flight Into Terrain (CFIT). Because of the compelling nature of SVS displays high integrity requirements may be imposed on the various databases used to generate the imagery on the displays even when the target SVS application does not require an essential or flight-critical integrity level. DIME utilized external sensors (WAAS and radar altimeter) to independently generate a 'synthesized' terrain profile. A statistical assessment of the consistency between the synthesized profile and the profile as stored in the DEM provided a fault-detection capability. The paper will discuss the basic DIME principles and will show the DIME performance for a variety of approaches to Runways 7 and 25 at EGE. The monitored DEMs are DTED Level 0, USGS with a 3-arcsec spatial resolution, and a DEM provided by NASA Langley. The test aircraft was a Boeing 757-200.

Uijt de Haag, Maarten; Young, Steve D.; Sayre, Jonathon; Campbell, Jacob; Vadlamani, Ananth

2002-07-01

398

RF Test Results from Cryomodule 1 at the Fermilab SRF Beam Test Facility  

SciTech Connect

Powered operation of Cryomodule 1 (CM-1) at the Fermilab SRF Beam Test Facility began in late 2010. Since then a series of tests first on the eight individual cavities and then the full cryomodule have been performed. We report on the results of these tests and lessons learned which will have an impact on future module testing at Fermilab. Since November 2010 Cryomodule 1 has been operating at 2 Kelvin. After evaluating each of the eight cavities while individually powered, the entire module has recently been powered and peak operation determined as shown in Figure 4. Several more weeks of measurements are planned before the module is warmed up, removed and replaced with Cryomodule 2 now under assembly at Fermilab.

Harms, E.; Carlson, K.; Chase, B.; Cullerton, E.; Hocker, A.; Jensen, C.; Joireman, P.; Klebaner, A.; Kubicki, T.; Kucera, M.; Legan, A.; /Fermilab /DESY

2011-07-26

399

Results of the HTHP ESP testing at Curtiss-Wright  

Microsoft Academic Search

This report to the US Department of Energy discusses the testing and evaluation of the electrostatic precipitator (ESP) that was installed at the government owned pressurized fluidized bed combustor (PFBC) test facility located in Wood-Ridge, NJ and operated by Curtiss-Wright Corporation. Test data on a short term ESP operation at 1400 to 1500°F and 84 psia showed that particulate collection

K. S. Kumar; P. L. Feldman; F. S. Jeselsohn

1984-01-01

400

The Results of the Roadside Drug Testing Assessment Project  

Microsoft Academic Search

The 21-mo Roadside Testing Assessment (ROSITA) project started in January 1999 and included a literature survey of drugs and\\u000a medicines that have detrimental impacts on road users’ performance, an inventory of the available roadside drug-testing equipment\\u000a for urine, oral fluid, and sweat, an evaluation of the operational, user, and legal requirements for roadside testing equipment\\u000a in the different European Union

Alain G. Verstraete

401

The Submillimeter Array: Current Status and Testing Results  

NASA Astrophysics Data System (ADS)

The Submillimeter Array (SMA) is a new radio interferometer currently being deployed at the summit of Mauna Kea, consisting of 8 telescopes of 6 meters diameter each, operating in the frequency range of 180 to 900 GHz. This project is a joint collaboration between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics in Taiwan, which has built two of the antennas. In this paper, we present the current status of the SMA and summarize various testing results. As of mid-October 2001, five of the antennas are fully operational, with the correlation capabilities of up to 6 baselines. The antennas are currently equipped with 230 and 345 GHz receivers and the correlator provides a bandwidth of 328 MHz, with a resolution of about 1 MHz per channel. The surface accuracy of the antennas is about 13 to 20 microns (see poster by Sridharan et al.) and the blind pointing rms error is about 5". Efforts at improving the pointing performance are underway, with implementation of real-time corrections using electronic inclinometers. While the control software for the array is still in its preliminary stages, the array is operable remotely over internet. The interferometric data is archived in FITS-IDI format (for AIPS++) and in the Caltech MIR format (for IDL).

Saito, M.; SMA Team

2001-12-01

402

Plasma Volume Expansion Resulting from Intravenous Glucose Tolerance Test  

PubMed Central

Objective. To quantify the degree of plasma volume expansion that occurs during an intravenous glucose tolerance test (IVGTT). Methods. Twenty healthy volunteers (mean age, 28 years) underwent IVGTTs in which 0.3?g/kg of glucose 30% was injected as a bolus over 1?min. Twelve blood samples were collected over 75?min. The plasma glucose and blood hemoglobin concentrations were used to calculate the volume distribution (Vd) and the clearance (CL) of both the exogenous glucose and the injected fluid volume. Results. The IVGTT caused a virtually instant plasma volume expansion of 10%. The half-life of the glucose averaged 15?min and the plasma volume expansion 16?min. Correction of the fluid kinetic model for osmotic effects after injection reduced CL for the infused volume by 85%, which illustrates the strength of osmosis in allocating fluid back to the intracellular fluid space. Simulations indicated that plasma volume expansion can be reduced to 60% by increasing the injection time from 1 to 5?min and reducing the glucose load from 0.3 to 0.2?g/kg. Conclusion. A regular IVGTT induced an acute plasma volume expansion that peaked at 10% despite the fact that only 50–80?mL of fluid were administered.

Hahn, Robert G.; Nystrom, Thomas

2011-01-01

403

Test results of chemical reactivity test (CRT) analysis of structural materials and explosives  

SciTech Connect

The chemical reactivity test, CRT, is a procedure used to screen the compatibility of component structure materials with explosives. This report contains the results of CRT materials evaluations conducted at Mound Facility. Data about materials combinations are catalogued both under the name of the explosive and the nonexplosive.

Back, P.S.; Barnhart, B.V.; Walters, R.R.; Haws, L.D.; Collins, L.W.

1980-03-21

404

Delaware Educational Assessment Program. 1986 Statewide Test Results. Summary Report.  

ERIC Educational Resources Information Center

During April, 1986, approximately 60,000 Delaware public school students in grades 1 through 8 and in grade 11 were administered a battery of achievement tests as part of the state-funded Delaware Educational Assessment Program (DEAP). The Comprehensive Tests of Basic Skills (CTBS) in reading, language arts, and mathematics was administered. In…

Delaware State Dept. of Public Instruction, Dover.

405

Combining Aptitude and Interest Test Results for Counseling.  

ERIC Educational Resources Information Center

|A study was conducted using a sample of 13,000 urban high school juniors tested in 1968-69 with both the Kuder Occupational Interest Survey (KOIS) and the National Merit Scholarship Qualifying Test (NMSQT). Students were grouped on the basis of high scores on the various college major scales reported on the KOIS and on the self-expressed interest…

Lombard, John W.

406

Putting Scholastic Aptitude Test Results on an Even Playing Field.  

ERIC Educational Resources Information Center

|It is very important, when considering how students from one area compare with those from another, to use similar student performance data. This is particularly evident when comparing the performance of students taking the Scholastic Aptitude Test (SAT) from an area where many students take the test to the performance of students from an area…

Costello, Ronald W.; Cox, Marge

407

40 CFR 204.57-5 - Reporting of test results.  

Code of Federal Regulations, 2011 CFR

...to § 204.57 at the conclusion of each twenty-four hour period during which testing...identification, where applicable. (ii) Year, make, assembly date, and model of compressor...Enforcement Officer. (c) Within five days after completion of testing of all...

2011-07-01

408

Fan Noise Source Diagnostic Test: Rotor Alone Aerodynamic Performance Results.  

National Technical Information Service (NTIS)

The aerodynamic performance of an isolated fan or rotor alone model was measured in the NASA Glenn Research Center 9- by 15- Foot Low Speed Wind Tunnel as part of the Fan Broadband Source Diagnostic Test conducted at NASA Glenn. The Source Diagnostic Test...

C. E. Hughes R. J. Jeracki R. P. Woodward C. J. Miller

2005-01-01

409

IUS1 - Redundant inertial measurement unit test plan and results  

Microsoft Academic Search

The Redundant Inertial Measurement Unit (RIMU) of the Inertial Upper Stage (IUS) rocket of the Shuttle has been tested according to a plan developed jointly by NASA and the USAF. The tests were carried out at the Eastern Launch Site (ELS) 16 hours before launch and consisted of five on pad calibrations and alignments (cal\\/aligns). RIMU gyrocompass alignments were compared

L. W. Mueller; L. Dubberke; J. Volger

1984-01-01

410

GICHD mine dog testing project - soil sample results #4  

Microsoft Academic Search

A mine dog evaluation project initiated by the Geneva International Center for Humanitarian Demining is evaluating the capability and reliability of mine detection dogs. The performance of field-operational mine detection dogs will be measured in test minefields in Afghanistan and Bosnia containing actual, but unfused landmines. Repeated performance testing over two years through various seasonal weather conditions will provide data

James L. Barnett; James M. Phelan; Luisa M. Archuleta; Tyson B. Wood; Kelly L. Donovan; Susan Fae Ann Bender

2003-01-01

411

Canister Decontamination Chamber No. 1 operability test results  

SciTech Connect

The DWPF Canister Decontamination Chamber No. 1 (CDC) was installed at the TNX facility in October, 1986 for operability testing. Operability testing was required because this equipment is unique and is a critical part of the defense waste process. The test was successful in demonstrating the canister decontamination operation. Testing verified proper nozzle locations, frit suspension, level probe and CCTV operations. The following recommendations are based on data obtained from frit blasting 24 canisters: reduce the recirculation pump speed, to allow proper level probes operation; add an extension to the chamber rinse nozzle which allows removal of frit from the top of the upper guide rinse nozzle; increase visibility through the CCTV camera; make the CMM grapple jaw pins more compatible with the MSM; and improve canister guide capability to aid in canister loading. CDC Operability Testing was completed October, 1987. 6 refs., 11 figs., 2 tabs.

Magoulas, V.E.

1987-10-30

412

EBR-II inherent shutdown and heat removal tests: a survey of test results  

SciTech Connect

An experimental study of inherently safe characteristics of LMFBR systems is being conducted in EBR-II. Experiments have been conducted which show (1) capabilities of heat removal without the aid of active safety systems and (2) capabilities to mitigate a reduction in-core cooling flow or heat rejection to the balance of plant (BOP) without aid of active control or protection systems. Experiments involving loss of forced reactor cooling flow and loss of all heat rejection to the BOP are planned to be conducted. Purpose of this paper is to summarize the result of the test program by presenting representative test data.

Planchon, H.P.; Singer, R.M.; Mohr, D.; Feldman, E.E.; Chang, L.K.; Betten, P.R.

1985-01-01

413

Quality Control, Testing and Deployment Results in NIF ICCS  

NASA Astrophysics Data System (ADS)

The strategy used to develop the NIF Integrated Computer Control System (ICCS) calls for incremental cycles of construction and formal test to deliver a total of 1 million lines of code. Each incremental release takes four to six months to implement specific functionality and culminates when offline tests conducted in the ICCS Integration and Test Facility verify functional, performance, and interface requirements. Tests are then repeated on line to confirm integrated operation in dedicated laser laboratories or ultimately in the NIF. Test incidents along with other change requests are recorded and tracked to closure by the software change control board (SCCB). Annual independent audits advise management on software process improvements. Extensive experience has been gained by integrating controls in the prototype laser preamplifier laboratory. The control system installed in the preamplifier lab contains five of the ten planned supervisory subsystems and seven of sixteen planned front-end processors (FEPs). Beam alignment, timing, diagnosis and laser pulse amplification up to 20 joules was tested through an automated series of shots. Other laboratories have provided integrated testing of six additional FEPs. Process measurements including earned-value, product size, and defect densities provide software project controls and generate confidence that the control system will be successfully deployed.

Woodruff, John

414

Test results and status of the DOE/Sandia 34-m VAWT Test Bed  

SciTech Connect

The DOE/Sandia 34-m VAWT Test Bed has been fully operational for over a year. During that time extensive performance data have been gathered. This paper first briefly discusses the background and evolution of this research turbine and its testing philosophy. Next, specific results are presented in the areas of aerodynamics, structural dynamics, and operation and control. The aerodynamics section primarily discusses measured versus predicted output power. In the structural dynamics section turbine response is presented with results shown for rotating natural frequencies and stresses at critical (blade) locations. Finally, operation and control results are presented, which include normal start/stop, speed variation, emergency handling and power quality issues. 16 refs., 11 figs., 1 tab.

Dodd, H.M.; Ashwill, T.D.; Berg, D.E.; Ralph, M.E.; Stephenson, W.A.; Veers, P.S. (Sandia National Labs., Albuquerque, NM (USA))

1989-01-01

415

The synchronous neural interactions test as a functional neuromarker for post-traumatic stress disorder (PTSD): a robust classification method based on the bootstrap  

NASA Astrophysics Data System (ADS)

Traumatic experiences can produce post-traumatic stress disorder (PTSD) which is a debilitating condition and for which no biomarker currently exists (Institute of Medicine (US) 2006 Posttraumatic Stress Disorder: Diagnosis and Assessment (Washington, DC: National Academies)). Here we show that the synchronous neural interactions (SNI) test which assesses the functional interactions among neural populations derived from magnetoencephalographic (MEG) recordings (Georgopoulos A P et al 2007 J. Neural Eng. 4 349-55) can successfully differentiate PTSD patients from healthy control subjects. Externally cross-validated, bootstrap-based analyses yielded >90% overall accuracy of classification. In addition, all but one of 18 patients who were not receiving medications for their disease were correctly classified. Altogether, these findings document robust differences in brain function between the PTSD and control groups that can be used for differential diagnosis and which possess the potential for assessing and monitoring disease progression and effects of therapy.

Georgopoulos, A. P.; Tan, H.-R. M.; Lewis, S. M.; Leuthold, A. C.; Winskowski, A. M.; Lynch, J. K.; Engdahl, B.

2010-02-01

416

Results from a pilot cell test of cermet anodes  

SciTech Connect

Goal was to develop long-lasting, energy-efficient anodes for Hall-Heroult cells used to produce Al metal. The anodes were made from a ceramic/metal composite consisting of NiO and NiFe{sub 2}O{sub 4} and a Cu/Ni metal phase. Thirteen cermet anodes were tested at Reynolds Metals Co., Muscle Shoals, AL. All anodes corroded severely during the pilot test. Electrolyte components were found deep within the anodes. However, there were many deficiencies in the pilot cell test, mainly the failure to maintain optimal operating conditions. It is concluded that there is a variety of fabrication and operational considerations that need to be addressed carefully in any future testing. 118 figs, 16 tabs, 17 refs.(DLC)

Windisch, Jr, C F; Strachan, D M; Henager, Jr, C H; Greenwell, E N [Pacific Northwest Lab., Richland, WA (United States); Alcorn, T R [Reynolds Metals Co., Muscle Shoals, AL (United States). Mfg. Technology Lab.

1992-08-01

417

SLAC FASTBUS Snoop Module: test results and support software  

SciTech Connect

The development of a diagnostic module for FASTBUS has been completed. The Snoop Module is designed to reside on a Crate Segment and provide high-speed diagnostic monitoring and testing capabilities. Final hardware details and testing of production prototype modules are reported. Features of software under development for a stand-alone single Snoop diagnostic system and Multi-Snoop networks will be discussed. 3 refs., 2 figs.

Gustavson, D.B.; Walz, H.V.

1985-09-01

418

Results of Repeat Tracer Tests at Ohaaki, NZ  

SciTech Connect

During 20 years of tracer testing at Ohaaki a number of wells have been used more than once as tracer injection sites. In studying the various responses obtained it has been necessary to consider variations in the experimental test conditions before making comparisons which relate to field conditions. Some very significant changes have occurred in the field hydrology in recent years and water flow speeds as high as those encountered at Wairakei have been demonstrated.

McCabe, W.J.; Clotworthy, A.W.; Morris, C.

1995-01-01

419

Gas-turbine HTGR materials screening test program interim results  

Microsoft Academic Search

The Gas-Turbine High-Temperature Gas-Cooled Reactor (GT-HTGR) Materials Screening Test Program is being performed to identify and evaluate structural alloys for application in the system's power conversion loop components. As part of this program, six vacuum-cast nickel-base alloys, IN100, Rene 100, IN713, MM004, M21, and IN738, and two wrought nickel-base alloys, Hastelloy X and Inconel 617, were creep tested and aged

S. N. Rosenwasser; W. R. Johnson

1976-01-01

420

Aluminum Stabilized NbTi Conductor Test Coil Design, Fabrication, and Test Results  

SciTech Connect

A new generation of precision muon conversion experiments is planned at both Fermilab and KEK. These experiments will depend upon a complex set of solenoid magnets for the production, momentum selection and transport of a muon beam to a stopping target, and for tracking detector momentum analysis of candidate conversion electrons from the target. Baseline designs for the production and detector solenoids use NbTi cable that is heavily stabilized by an extruded high RRR aluminum jacket. A U.S.-Japan research collaboration has begun whose goal is to advance the development of optimized Al-NbTi conductors, gain experience with the technology of winding coils from this material, and test the conductor performance as modest length samples become available. For this purpose, a 'conductor test' solenoid with three coils was designed and built at Fermilab. A sample of the RIKEN Al-NbTi conductor from KEK was wound into a 'test' coil; this was sandwiched between two 'field' coils wound from doubled SSC cable, to increase the peak field on the RIKEN test coil. All three solenoid coils were epoxy impregnated, and utilized aluminum outer bandage rings to apply preload to the coils when cold. The design and fabrication details, and results of the magnet quench performance tests are presented and discussed.

Andreev, N.; Chlachidze, G.; Evbota, D.; Kashikhin, V.S.; Lamm, M.; Makarov, A.; Tartaglia, M.; /Fermilab; Nakamoto, T.; Ogitsu, T.; Tanaka, K.; Yamamoto, A.; /KEK, Tsukuba

2011-09-01

421

10 CFR 26.139 - Reporting initial validity and drug test results.  

Code of Federal Regulations, 2010 CFR

...facility's validity and drug test results, the results of quality control testing performed...licensee testing facility, and the results from testing the quality control...and detect any local trends in drugs of abuse that may require...

2009-01-01

422

10 CFR 26.139 - Reporting initial validity and drug test results.  

Code of Federal Regulations, 2010 CFR

...facility's validity and drug test results, the results of quality control testing performed...licensee testing facility, and the results from testing the quality control...and detect any local trends in drugs of abuse that may require...

2010-01-01

423

Uranium deposition study on aluminum: results of early tests  

SciTech Connect

Laboratory experiments to quantify uranium compound deposition on Aluminum 3003 test coupons have been initiated. These experiments consist of exposing the coupons to normal assay UF/sub 6/ (0.7% /sup 235/U) in nickel reaction vessels under various conditions of UF/sub 6/ pressure, temperature, and time. To-date, runs from 5 minutes to 2000 hr have been completed at a UF/sub 6/ pressure of 100 torr and at a temperature of 60/sup 0/C. Longer exposure times are in progress. Initial results indicated that a surface film of uranium, primarily as uranyl fluoride (UO/sub 2/F/sub 2/), is deposited very soon after exposure to UF/sub 6/. In a five minute UF/sub 6/ exposure at a temperature of 60/sup 0/C, an average of 2.9 ..mu..g U/cm/sup 2/ was deposited; after 24 hr the deposit typically increased to 5.0 ..mu..g/cm/sup 2/ and then increased to 10.4 ..mu..g/cm/sup 2/ after 2000 hr. This amount of deposit (at 2000 hr exposure) would contribute roughly 10 to 20% to the total 186 keV gamma signal obtained from a GCEP product header pipe being operated at UF/sub 6/ pressures of 2 to 5 torr. The amount of isotopic exchange which would occur in the deposit in the event that HEU and LEU productions were alternated is considered. It is felt that isotopic exchange would not occur to any significant amount within the fixed deposit during relatively short HEU production periods since the HEU would be present primarily as adsorbed UF/sub 6/ molecules on the surface of the deposit. The adsorbed HEU molecules would be removed by evacuation and diluted by LEU production. Major increases in the deposit count would be observed if a leak occurred or moisture was introduced into the system while HEU was being produced.

Hughes, M.R.; Nolan, T.A.

1984-06-19

424

Diagnosing children's writing disabilities: different tests give different results.  

PubMed

Writing problems are common in children with clinical disorders. However, there are significant intra-individual differences between the ability to spell words, construct sentences, and compose text. Therefore, achievement tests measuring different writing skills may not be consistent in identifying children who have these various writing disabilities. Our study compared scores on the Woodcock-Johnson Written Language subtests (which measure the ability to produce single words and single sentences) with scores on the Wechsler Individual Achievement Test Written Expression subtest (which assesses compositional writing skills) in 54 children referred by their teachers to a school psychologist for writing problems. The Woodcock-Johnson only identified 35% of children as having significant writing problems, whereas the Wechsler test identified 78%. Our study suggests that the latter is more likely than the Woodcock-Johnson to identify students who have problems in compositional writing. PMID:16350611

Mayes, Susan D; Calhoun, Susan L; Lane, Susan E

2005-08-01

425

Creep test results on D0 RunIIB stave  

SciTech Connect

The D0 RunIIb final design stave has been tested to verify its response to long term loading (creep). Two stave mockups have been investigated. Mechanical stave No.3 has been under continuous loading for 8 weeks. The maximum deflection was 3.6 {micro}m, with 80% of the total sag reached after the first two weeks. Mechanical stave No.2, despite the denomination, has been assembled successively with improved gluing assembly process and tested for six weeks. No creep mechanism has been observed in this surveyed mockup.

Lanfranco, Giobatta; /Fermilab

2003-12-01

426

Kodak AMSD mirror program: overview and cryo test results  

NASA Astrophysics Data System (ADS)

Kodak AMSD mirror processing was successfully completed, and the mirror was cryo tested at NASA. This paper reviews the entire AMSD program at Eastman Kodak Company from mirror blank production to mirror processing and metrology. To achieve the most information possible with respect to the flight configuration planned for JWST, the original Kodak AMSD test plan was modified. This change in plan is discussed and how it impacts the future path for AMSD. The AMSD Phase III program is also discussed and the status of that program is provided. In addition, this paper discusses performance of the mirror at cryo temperatures.

Matthews, Gary; Barrett, David; Bolton, James; Dahl, Roger; Michaels, Elise; Mallette, Mark; Johnson, Josh

2004-01-01

427

Construction details and test results from RHIC sextupoles  

Microsoft Academic Search

Four 8 cm aperture sextupoles have been built at BNL to verify the magnetic performance of this magnet in the RHIC installation. Two significantly different mechanical configurations have been designed, and two magnets of each design have been built, and successfully tested, and have exceeded the required minimum quench current by a substantial margin. This report describes the assembly details

M. Lindner; M. Anerella; G. Ganetis; R. Garber; A. Ghosh; A. Greene; R. Gupta; A. Jain; S. Kahn; E. Kelly; E. Killian; G. Morgan; A. Prodell; M. Rehak; K. Robins; W. Sampson; R. Shutt; R. Thomas; P. Thompson; P. Wanderer; E. Willen

1994-01-01

428

Test results from the 70 MW Tidd PFBC Demonstration Plant  

Microsoft Academic Search

The 70 MWe Tidd PFBC Demonstration Plant in Brilliant, Ohio, the first PFBC demonstration Plant in North America, is in its third year of operation and testing. Operation of the Tidd Plant has provided invaluable experience with the systems required to apply PFBC technology to electric power generation. It has also provided operating data to verify the ability of the

D. R. Hafer; M. J. Mudd; M. E. Zando

1993-01-01

429

Recent Results for Solar-System Tests of General Relativity  

Microsoft Academic Search

We use the current JPL archive of planetary positional data, along with the data-analysis implementation described by Newhall, Standish, and Williams, to solve for all the conventional parameters included in the JPL planetary ephemerides, plus four more parameters specific to tests of General Relativity. Spacecraft ranging data generated by the Deep Space Network (DSN) for NASA missions, and radar ranging

J. D. Anderson; E. L. Lau; S. Turyshev; J. G. Williams; M. M. Nieto

2002-01-01

430

Results of field testing of waste forms using lysimeters  

Microsoft Academic Search

The purpose of the field testing task, using lysimeter arrays, is to expose samples of solidified resin waste to the actual physical, chemical, and microbiological conditions of disposal enviroment. Wastes used in the experiment include a mixture of synthetic organic ion exchange resins and a mixture of organic exchange resins and an inorganic zeolite. Solidification agents used to produce the

McConnell J. W. Jr; R. D. Rogers

1988-01-01

431

Testing Results of Magnetostrictive Ultrasonic Sensor Cables for Signal Loss  

SciTech Connect

The purpose of this test was to determine the signal strength and resolution losses of a magnetostrictive ultrasonic system with an extended signal cable. The cable of interest carries electrical signals between the pulse generator/receiver and the magnetostrictive transducer. It was desired to determine the loss introduced by different lengths of the signal cable (6', 100', and 200').

JT Evans

2005-05-01

432

Advanced Receiver II Telemetry Test Results at Goldstone.  

National Technical Information Service (NTIS)

The telemetry performance of the Advanced Receiver II (ARX-II) in tracking and demodulating signals from various deep space missions is described. The tests were performed at Goldstone, and the spacecrafts tracked were Pioneer 10, Pioneer 11, Voyager 2, M...

R. Sadr R. Bevan S. Hinedi

1991-01-01

433

TMED-4 INTERIM REPORT PURE ZR EQUILIBRIUM TEST RESULTS  

Microsoft Academic Search

Due to higher than expected permeation rates in the production of tritium in the TVA, a development and testing program was implemented to develop the understanding of why the higher rates were occurring. In addition, improved data are needed for both the design as well as the predictive models. One part of the program was to determine the equilibrium pressure

P. Korinko; G. Morgan

2010-01-01

434

Test results on a free-cylinder Stirling engine  

Microsoft Academic Search

In the early 1980s Sunpower Incorporated of Athens, Ohio designed and built some prototype free-cylinder Stirling engine powered water pumps for use in rural areas. In 1988, one of the products of this development was donated to the University of Witwatersrand. This engine has been comprehensively instrumented and is in the process of being tested. A net output power of

D. I. Banks

1989-01-01

435

Air/Ground Wind Shear Information Integration: Flight Test Results.  

National Technical Information Service (NTIS)

An element of the NASA/FAA wind shear program is the integration of ground-based microburst information on the flight deck, to support airborne wind shear alerting and microburst avoidance. NASA conducted a wind shear flight test program in the summer of ...

D. A. Hinton

1992-01-01

436

Mechanical planter update: 2007 Bayou Teche test plant cane results  

Technology Transfer Automated Retrieval System (TEKTRAN)

Mechanization of cane planting has been somewhat limited, due to the fact that the entire 4-5 ft stalk must be planted horizontally in the seedbed. Several modifications were made to mechanical planters by a grower cooperator. To test the modifications, a replicated field trial was planted on Augus...

437

Field testing results of downhole scale inhibitor injection  

Microsoft Academic Search

The first field tests on the addition of scale inhibitors to geothermal brines were carried out in Italy between 1981 and 1985 at Cesano and at Latera. A long-term experiment was recently performed in the Latera 2 well to check the feasibility of the downhole inhibitor injection technique as a reliable solution to the carbonate scaling problem. A plastic-lined injection

S. Pieri; F. Sabatelli; B. Tarquini

1989-01-01

438

Interpretation of in-situ concrete strength test results  

Microsoft Academic Search

A full scale insitu reinforced concrete building frame built in a laboratory provided an opportunity to assess the use of the in-situ pull-out test on a systematic basis during construction. Interpretation of strength correlations should take into account the uncertainties that exist and therefore should be made by the use of standard statistical procedures. Two procedures recently adopted by BS

Marios SOUTSOS; John BUNGEY; Adrian LONG; Geoff TICKELL

439

Performance testing and results of the first Etec CORE-2564  

NASA Astrophysics Data System (ADS)

In order to be able to write 64 megabit DRAM reticles, to prepare to write 256 megabit DRAM reticles and in general to meet the current and next generation mask and reticle quality requirements, Hoya Micro Mask (HMM) installed in 1991 the first CORE-2564 Laser Reticle Writer from Etec Systems, Inc. The system was delivered as a CORE-2500XP and was subsequently upgraded to a 2564. The CORE (Custom Optical Reticle Engraver) system produces photomasks with an exposure strategy similar to that employed by an electron beam system, but it uses a laser beam to deliver the photoresist exposure energy. Since then the 2564 has been tested by Etec's standard Acceptance Test Procedure and by several supplementary HMM techniques to insure performance to all the Etec advertised specifications and certain additional HMM requirements that were more demanding and/or more thorough than the advertised specifications. The primary purpose of the HMM tests was to more closely duplicate mask usage. The performance aspects covered by the tests include registration accuracy and repeatability; linewidth accuracy, uniformity and linearity; stripe butting; stripe and scan linearity; edge quality; system cleanliness; minimum geometry resolution; minimum address size and plate loading accuracy and repeatability.

Franks, C. Edward; Shikata, Asao; Baker, Cathy A.

1993-03-01

440

Hanford 100-D Area Biostimulation Treatability Test Results  

Microsoft Academic Search

Pacific Northwest National Laboratory conducted a treatability test designed to demonstrate that in situ biostimulation can be applied to help meet cleanup goals in the Hanford Site 100-D Area. In situ biostimulation has been extensively researched and applied for aquifer remediation over the last 20 years for various contaminants. In situ biostimulation, in the context of this project, is the

Michael J. Truex; Vincent R. Vermeul; Brad G. Fritz; Rob D. Mackley; Donaldo P. Mendoza; Rebecca P. Elmore; Alexandre V. Mitroshkov; Deborah S. Sklarew; Christian D. Johnson; Martinus Oostrom; Darrell R. Newcomer; Fred J. Brockman; Christina L. Bilskis; Susan S. Hubbard; John E. Peterson; Kenneth H. Williams; E. Gasperikova; J. Ajo-Franklin

2009-01-01

441

Results of the Test Application of the Process Standard.  

National Technical Information Service (NTIS)

The purpose of this test was to develop an energy efficient design for a new Electronics Building using the Process Standard for the Design of Energy Efficient Federal Buildings as a guideline. The selected building is a part of the National Oceanic and A...

1978-01-01

442

Corrosion prevention with an organic metal (polyaniline): corrosion test results  

Microsoft Academic Search

The organic metal polyaniline (PAni) was found by us some years ago to be a powerful corrosion protection agent. The properties of the new PAni containing primer CORRPASSIVTM sealed with different top coats are characterized and compared with top coated probes using no or a conventional zinc primer. The combination of measurements of salt spray test, electrochemical impedance spectroscopy (EIS)

Bernhard Wessling; Joerg Posdorfer

1999-01-01

443

Operational Results of a Closed Brayton Cycle Test-Loop  

Microsoft Academic Search

A number of space and terrestrial power system designs plan to use nuclear reactors that are coupled to Closed-loop Brayton Cycle (CBC) systems to generate electrical power. Because very little experience exists regarding the operational behavior of these systems, Sandia National Laboratories (through its Laboratory Directed Research and Development program) is developing a closed-loop test bed that can be used

Steven A. Wright; Robert Fuller; Ronald J. Lipinski; Kenneth Nichols; Nicholas Brown

2005-01-01

444

Operational results of a Closed Brayton Cycle test-loop  

Microsoft Academic Search

A number of space and terrestrial power system designs plan to use nuclear reactors that are coupled to Closed-loop Brayton Cycle (CBC) systems to generate electrical power. Because very little experience exists regarding the operational behavior of these systems, Sandia National Laboratories (through its Laboratory Directed Research and Development program) is developing a closed-loop test bed that can be used

Robert Fuller; Steven Alan Wright; Kenneth Graham. Nichols; Nicholas Brown; Ronald J. Lipinski

2004-01-01

445

Test results: textiles selected for direct gain passive buildings  

SciTech Connect

Upholstery textiles that are commercially available to residents of passive solar homes were tested to determine the sunlight resistance and thermal conductivity properties. Those textiles with the highest rating for sunlight resistance can then be recommended for use in direct gain passive solar buildings.

Guerin, D.A.; Butler, S.L.

1981-01-01

446

Gas-Turbine HTGR Materials Screening Test Program Interim Results.  

National Technical Information Service (NTIS)

The Gas-Turbine High-Temperature Gas-Cooled Reactor (GT-HTGR) Materials Screening Test Program is being performed to identify and evaluate structural alloys for application in the system's power conversion loop components. As part of this program, six vac...

S. N. Rosenwasser W. R. Johnson

1976-01-01

447

Swirl Coaxial Injector Development. Part I: Test Results  

Microsoft Academic Search

Sierra Engineering, in conjunction with the Air Force Research Laboratory Propulsion Directorate, has undertaken a program to develop a gas-centered, swirl coaxial injector. This injector design will be used in the multi-element Advanced Fuels Tester (AFT) engine to test a variety of hydrocarbon propellants. As part of this program, a design methodology is being developed which will be applicable to

J. A. Muss; C. W. Johnson; R. K. Cohn; P. A. Strakey; R. W. Bates

2002-01-01

448

Advanced Test Reactor probabilistic risk assessment methodology and results summary.  

National Technical Information Service (NTIS)

The Advanced Test Reactor (ATR) probabilistic risk assessment (PRA) Level 1 report documents a comprehensive and state-of-the-art study to establish and reduce the risk associated with operation of the ATR, expressed as a mean frequency of fuel damage. Th...

S. A. Eide S. A. Atkinson T. A. Thatcher

1992-01-01

449

Semiscale steam-generator tube-rupture test results. [PWR  

Microsoft Academic Search

The Semiscale Program and Test facility are located at the Idaho National Engineering Laboratory, and operated by EG and G Idaho, Inc., for the US Department of Energy. The system is a small-scale model of the primary coolant system of a pressurized water reactor (PWR) nuclear generating plant. An experimental program designed to provide data from steam generator tube rupture

Dimenna

1983-01-01

450

Power Burst Facility (PBF) severe fuel damage test 1-4 test results report  

SciTech Connect

A comprehensive evaluation of the Severe Fuel Damage (SFD) Test 1-4 performed in the Power Burst Facility (PBF) at the Idaho National Engineering Laboratory is presented. Test SFD 1-4 was the fourth and final test in an internationally sponsored light water reactor severe accident research program, initiated by the US Nuclear Regulatory Commission. The overall technical objective of the test was to contribute to the understanding of fuel and control rod behavior, aerosol and hydrogen generation, and fission product release and transport during a high-temperature, severe fuel damage transient. A test bundle, comprised of 26 previously irradiated (36,000 MWd/MtU) pressurized water-reactor-type fuel rods, 2 fresh instrumented fuel rods, and 4 silver-indium-cadmium control rods, was surrounded by an insulating shroud and contained in a pressurized in-pile tube. The experiment consisted of a 1.3-h transient at a coolant pressure of 6.95 MPa in which the inlet coolant flow to the bundle was reduced to 0.6 g/s while the bundle fission power was gradually increased until dryout, heatup, cladding rupture, and oxidation occurred. With sustained fission power and heat from oxidation, temperatures continued to rise rapidly, resulting in zircaloy and control rod absorber alloy melting, fuel liquefaction, material relocation, and the release of hydrogen, aerosols, and fission products. The transient was terminated over a 2100-s time span by slowly reducing the reactor power and cooling the damaged bundle with argon gas. A description and evaluation of the major phenomena, based upon the response of on-line instrumentation, analysis of fission product and aerosol data, postirradiation examination of the fuel bundle, and calculations using the SCDAP/RELAP5 computer code, are presented. 40 refs., 160 figs., 31 tabs.

Petti, D.A.; Martinson, Z.R.; Hobbins, R.R.; Allison, C.M.; Carlson, E.R.; Hagrman, D.L.; Cheng, T.C.; Hartwell, J.K.; Vinjamuri, K.; Seifken, L.J.

1989-04-01

451

Results of the Mojave tests of the Mars 96 rover  

NASA Astrophysics Data System (ADS)

The self propelled undercarriage of the Mars 96 mission Marsokhod, a convertible three section joint structure moving to the wheel walking principle, is considered. Original conical cylindrical wheels provide a unique cross country ability both on loose friable soil and on a surface with critical relief conditions and accidental obstacles. The construction scheme of the self propelled undercarriage and its components and features of arrangement are discussed. Considerations concerning the problems of placing the scientific and service devices and power sources, and requirements for the latter, are indicated. New possibilities discovered for carrying out the scientific experiments are analyzed. Data of laboratory and field on the road tests are given. The main specifications are shown with the self propelled undercarriage and test pieces of the self propelled undercarriage.

Linkin, V. M.; Kerzhanovich, V. V.; Kemurdjian, A. I.; Gromov, V. V.; Pichkhaze, K.; Rogovsky, G.; Friedman, L.; Schurmeier, H.

1993-01-01

452

Design and preliminary test results of Daya Bay RPC modules*  

SciTech Connect

Resistive Plate Chamber (RPC) modules will be used as one part of the cosmic muon veto system in the Daya Bay reactor neutrino experiment. A total of 189 RPC modules will cover the three water pools in the experiment. To achieve track reconstruction and high efficiency, each module consists of 4 layers, each of which contains two sizes of bare chambers. The placement of bare chambers is reversed in different layers to reduce the overlapping dead areas. The module efficiency and patch efficiency were studied both in simulation and test of the data analysis. 143 modules have been constructed and tested. The preliminary study shows that the module and patch 3 out of 4 layers efficiency reaches about 98%.

Hackenburg, R.

2011-09-01

453

Ames test results on shot-tank residues  

SciTech Connect

In August 1987, a routine Ames test on soot from the Lawrence Livermore National Laboratory (LLNL) 4-in. gun showed that the soot was mutagenic to Salmonella bacteria. Subsequent liquid chromatography on the soot showed that, out of hundreds of ultravoilet-absorbing compounds found in the residue, only three or four were mutagenic. When a sample large enough to weigh was collected, it was found that No environmentally identified complex mixture has ever been reported with as much Ames/Salmonella activity per gram as the gun residues.'' Since then, Ames tests of hundreds of samples have verified that the residues from our gun tanks may be hazardous to health. The actual degree of the hazard and the identity of the offending chemicals are still unknown. 2 refs.

Bloom, G.H.

1990-09-21

454

Design and preliminary test results of Daya Bay RPC modules  

NASA Astrophysics Data System (ADS)

Resistive Plate Chamber (RPC) modules will be used as one part of the cosmic muon veto system in the Daya Bay reactor neutrino experiment. A total of 189 RPC modules will cover the three water pools in the experiment. To achieve track reconstruction and high efficiency, each module consists of 4 layers, each of which contains two sizes of bare chambers. The placement of bare chambers is reversed in different layers to reduce the overlapping dead areas. The module efficiency and patch efficiency were studied both in simulation and test of the data analysis. 143 modules have been constructed and tested. The preliminary study shows that the module and patch 3 out of 4 layers efficiency reaches about 98%.

Xu, Ji-Lei; Guan, Meng-Yun; Yang, Chang-Gen; Wang, Yi-Fang; Zhang, Jia-Wen; Lu, Chang-Guo; Kirk, McDonald; Robert, Hackenburg; Kwong, Lau; Logan, Lebanowski; Cullen, Newsom; Lin, Shih-Kai; Jonathan, Link; Ma, Lie-Hua; Viktor, P??; Vit, Vorobel; Chen, Jin; Liu, Jin-Chang; Zhou, Yong-Zhao; Liang, Hao

2011-09-01

455

Recent results from the Spacecraft Fabrication and Test MODIL  

SciTech Connect

The Spacecraft Fabrication and Test Manufacturing Operations Development and Integration Laboratory (SF&T MODIL) is working with SDIO program offices and contractors to reduce schedule and budget risks for SDIO systems as they go into production. The concurrent engineering thrust has identified potential high payoff areas. A materials and structures demonstration project has been successfully completed in partial automated closing of matched metal molds for a continuous fiber composite. In addition to excellent accuracy, the parts demonstrated excellent predictability and repeatability of physical properties. The cryocooler thrust successfully demonstrated and inserted precision technologies into a generic cryocooler part. The precision technologies thrust outlined two potentially high payoff areas in precision alignment and miniature rocket thrust measurement. The Producible Technology Working Group (PTWG) efforts identified the need for a test and assembly thrust. Due to funding limitations, continuing efforts are limited to the cryocooler thrust.

Saito, T.T.

1993-04-01

456

Results from the average power laser experiment photocathode injector test  

NASA Astrophysics Data System (ADS)

Tests of the electron beam injector for the Boeing/Los Alamos Average Power Laser Experiment (APLE) have demonstrated first time operation of a photocathode RF gun accelerator at 25% duty factor. This exceeds previous photocathode operation by three orders of magnitude. The success of these tests was dependent upon the development of reliable and efficient photocathode preparation and processing. This paper describes the fabrication details for photocathodes with quantum efficiencies up to 12% which were used during electron beam operation. Measurements of photocathode lifetime as it depends upon the presence of water vapor are also presented. Observations of photocathode quantum efficiency rejuvenation and extended lifetime in the RF cavities are described. The importance of these effects upon photocathode lifetime during high average power operation are discussed.

Dowell, D. H.; Bethel, S. Z.; Friddell, K. D.

1995-02-01

457

Charpy impact test results for low-activation ferritic alloys  

SciTech Connect

The objective of this work is to evaluate the shift of the ductile to brittle transition temperature (DBTT) and the reduction of the upper shelf energy (USE) due to neutron irradiation of low activation ferritic alloys. Six low activation ferritic alloys have been tested following irradiation at 365/sup 0/C to 10 dpa and compared with control specimens in order to assess the effect of irradiation on Charpy impact properties.

Cannon, N.S.; Hu, W.L.; Gelles, D.S.

1987-05-01

458

Deflection test results on D0 Run IIB stave  

SciTech Connect

The D0 RunIIb final design stave has been tested to verify its actual mechanical performance. The effectiveness of four G-11 (fiberglass/epoxy) braces to bridge the two channels has been investigated as well. All staves have met the goal stiffness for the silicon area. The stave mockups with braces have shown excellent stiffness in complete agreement with what theoretically calculated.

Lanfranco, Giobatta; /Fermilab

2003-09-01

459

WFC3 TV3 Testing: IR Gain Results  

NASA Astrophysics Data System (ADS)

Over the course of Thermal Vacuum 3 (TV3) testing during the spring of 2008, we used flat field data to calculate the gain of the IR4 (FPA165) flight detector. At the nominal flight gain setting of 2.5 e-/ADU, we measure gain values between 2.31 - 2.41 e-/ADU, after accounting for inter-pixel capacitance (IPC). This corresponds to 2.66 - 2.77 e-/ADU before the IPC correction.

Hilbert, B.