scholarly journals Laboratory Research and Evaluation on Design and Application Performance of High-Performance Cold-Mix Resin

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4828
Author(s):  
Qing-Wei Zeng ◽  
Pei-Wei Gao ◽  
Yang-Fu Xu ◽  
Guo-Qing Dong ◽  
Man-Man Chen ◽  
...  
Keyword(s):  
High Performance ◽  
Performance Test ◽  
Sudden Change ◽  
Exothermic Peak ◽  
Asphalt Mixtures ◽  
Laboratory Research ◽  
Control Group ◽  
Steel Bridge ◽  
Characteristic Analysis ◽  
And Performance

To improve the safety of orthotropic steel bridge decks and the construction efficiency of bridge deck pavement by enhancing the performance of pavement materials, a new-generation, high-performance cold-mix resin was prepared by carrying out the combination of micro-characteristic analysis and performance test. Meanwhile, the pavement performance and fatigue performance of high-performance cold-mix resin mixtures and hot-mix epoxy saphalt mixtures as a control group were studied experimentally. The results show that different kinds of epoxy resins show bisphenol structure in essence. The curing exothermic peak temperature of the cold-mix resin increases with the heating rate. Both the specific heat capacity (△CP) of cold-mix resin and cold-mix resin asphalts exhibit a sudden change between −20 °C and 40 °C. In resin asphalt mixtures, cold-mix resin forms the network structure skeleton whereas the asphalt distributed in the form of tiny particles. The dosage of respective component has a significant effect on the tensile strength and elongation at break of cold-mix resin. Compared with hot-mix epoxy asphalt mixtures, cold-mix resin mixtures exhibit comparable water stability and high and low-temperature performance, as well as greater fatigue life.

scholarly journals Development of High-Performance Face Gear Set (Machining and Performance Test)

2011 ◽  
Vol 77 (775) ◽  
pp. 573-581
Author(s):  
Isamu TSUJI ◽  
Hiroshi GUNBARA ◽  
Kazumasa KAWASAKI ◽  
Yoshikazu ABE ◽  
Kazutaka SUZUKI ◽  
...  
Keyword(s):  
High Performance ◽  
Performance Test ◽  
Face Gear ◽  
And Performance

1307 Development of High-Performance Face Gears : Machining and Performance Test

2010 ◽  
Vol 2010.10 (0) ◽  
pp. 105-108 ◽  
Author(s):  
Isamu TSUJI ◽  
Hiroshi GUMBARA ◽  
Kazumasa KAWASAKI ◽  
Yoshikazu ABE
Keyword(s):  
High Performance ◽  
Performance Test ◽  
And Performance

scholarly journals Effects of Progressive Muscle Relaxation on Concentration and Performance Scores of 10m Shooters

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Novrizal Achmad Novan ◽  
Nandya Indriana Adha Irianto ◽  
Komarudin Komarudin ◽  
Patriana Nurmansyah Awwaludin
Keyword(s):  
Performance Test ◽  
Muscle Relaxation ◽  
Self Control ◽  
Progressive Muscle Relaxation ◽  
Control Group ◽  
Training Methods ◽  
Main Effect ◽  
Dependent Variables ◽  
The Difference ◽  
And Performance

Shooting skills are complex. Athletes often have to face a situation requiring one shot to get a perfect score and maintain concentration and the trigger pull. This study aimed to analyze the difference in progressive muscle relaxation (PMR) exercise on increasing concentration and performance scores of 10-meter shooting. A total of 12 athletes (seven female dan five males) in Purwakarta were recruited for this study. They were randomly assigned to the PMR group (n = 6) and the control group (n = 6). The instruments used were the Concentration Grid Test for measuring concentration and the scores of 60 shots of the 10-meter shooting of both men and women for a performance test. Data analysis using MANCOVA was performed using shooting and concentration scores as the dependent variables and covariates to determine their performance. They can be differentiated based on conventional training methods, progressive muscle relaxation, and the interaction of these factors. The results of the MANCOVA indicated a significant main effect for exercise methods. It was revealed that differences in exercise methods had a significant effect on concentration and shooting scores. When athletes face the demands of top performance, PMR training is an economical but efficient and effective strategy for dealing with the problems. It helps athletes to do the self-control and focus their attention during stressful situations. It also can be used to maintain physical, technical, and mental balances.

scholarly journals Comparison of Model Predictions and Performance Test Data for a Prototype Thermal Energy Storage Module

2019 ◽  
Author(s):  
Dre Helmns ◽  
Van P. Carey ◽  
Navin Kumar ◽  
Debjyoti Banerjee ◽  
Arun Muley ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
High Performance ◽  
Performance Test ◽  
Experimental Program ◽  
Lithium Nitrate ◽  
Model Predictions ◽  
And Performance

Abstract Although model predictions of thermal energy storage (TES) performance have been explored in several previous investigations, information that allows experimental validation of performance models has been very limited. This is particularly true for high-performance TES designs that facilitate fast input and extraction of energy. In this paper, we present a summary of performance tests of a high-performance TES unit using lithium nitrate trihydrate phase change material (PCM) as a storage medium. Our experimental program also included thorough property determinations and cyclic testing of the PCM. Performance data is presented for complete dual-mode cycles consisting of extraction (melting) followed by charging (freezing). These tests simulate the daylong cyclic operation of a TES unit for asynchronous cooling in a power plant. The model analysis is found to agree very well, within 10%, with the experimental data except for conditions very near the initiation of freezing. Slight deviation from the predicted performance at that time is a consequence of sub-cooling that is required to initiate solidification. The comparisons presented here demonstrate the viability of thermal energy storage for augmentation of power plant air-cooled condensers as well as other potential applications.

Cognitive-Affective Stress Management Training with High Performance Youth Volleyball Players: Effects on Affect, Cognition, and Performance

1988 ◽  
Vol 10 (4) ◽  
pp. 448-460 ◽  
Author(s):  
Peter R.E. Crocker ◽  
Rikk B. Alderman ◽  
F. Murray ◽  
R. Smith
Keyword(s):  
Treatment Group ◽  
Stress Management ◽  
High Performance ◽  
Coping Skills ◽  
Management Training ◽  
Skills Training ◽  
Control Group ◽  
Coping Skills Training ◽  
Stress Management Training ◽  
And Performance

Cognitive-Affective Stress Management Training (SMT) is a coping skills training program designed to help athletes control dysfunctional stress processes (Smith, 1980). The present quasi-experimental study investigated the effects of SMT on affect, cognition, and performance in high performance youth volleyball players. Members of Alberta's Canada Games men's and women's (under 19 years of age) volleyball teams were assigned to either an experimental treatment group or a waiting-list control group. The treatment program consisted of eight modules, approximately 1 week apart, that allowed subjects to learn and apply somatic and cognitive coping skills. The results indicated that the treatment group emitted fewer negative thoughts in response to videotaped stressors and had superior service reception performance in a controlled practice compared to the control group. There were no interpretable differences between groups for either state anxiety (CSAI-2) or trait anxiety (SCAT). The cognitive and performance measures provided converging support for Smith's program. The results are discussed in terms of coping skills training, theoretical issues regarding the measurement of anxiety, and possible affect-cognition system independence.

Goal Setting and Performance in a Novel Coordination Task: Mediating Mechanisms

1992 ◽  
Vol 14 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Matthew Smith ◽  
Christina Lee
Keyword(s):  
Goal Setting ◽  
Test Performance ◽  
Performance Test ◽  
Mediating Effect ◽  
Facilitatory Effect ◽  
Control Group ◽  
Actual Performance ◽  
Training Strategy ◽  
Mediating Mechanisms ◽  
And Performance

This study examined the facilitatory effect of goal setting in physical performance. Three potential mechanisms that may mediate this effect are described: increases in time spent practicing, promotion of effective training strategies, and increases in commitment resulting from public goal setting. Students (N=51) performed a novel task under one of three conditions: public goal setting, private goal setting, and no goal setting. Goals selected, time spent practicing, strategies used during practice, and actual performance were assessed. Subjects in the two goal-setting groups showed better performance than those in the control-group; those in the public goal-setting group spent the most time in practice, but this was not reflected in better performance. Test performance was predicted by baseline performance and by the goal set; practice time, training strategy, and public goal setting did not account for further variance in performance. Although this study failed to find a mediating effect for these three mechanisms, the results must be interpreted with caution.

scholarly journals Comparison of Model Predictions and Performance Test Data for a Prototype Thermal Energy Storage Module

2020 ◽  
Vol 143 (2) ◽  
Author(s):  
Dre Helmns ◽  
Van P. Carey ◽  
Navin Kumar ◽  
Debjyoti Banerjee ◽  
Arun Muley ◽  
...  
Keyword(s):  
Energy Storage ◽  
Test Data ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
High Performance ◽  
Performance Test ◽  
Experimental Tests ◽  
Lithium Nitrate ◽  
Model Predictions ◽  
And Performance

Abstract Although model predictions of thermal energy storage (TES) performance have been explored in previous investigations, relevant test data that enable experimental validation of performance models have been limited. This is particularly true for high-performance TES designs that facilitate fast input and extraction of energy. In this paper, we present a summary of experimental tests of a high-performance TES unit using lithium nitrate trihydrate phase change material as a storage medium. Performance data are presented for complete dual-mode cycles consisting of extraction (melting) followed by charging (freezing). These tests simulate the cyclic operation of a TES unit for asynchronous cooling in a variety of applications. The model analysis is found to agree reasonably well, within 10%, with the experimental data except for conditions very near the initiation of freezing, a consequence of subcooling that is required to initiate solidification.

scholarly journals A Class Practice Study of Intervention Effect of Interactive Assessment on Learning Goal Orientation

2021 ◽  
Vol 12 ◽  
Author(s):  
Mai Yokoyama ◽  
Kazuhisa Miwa
Keyword(s):  
Goal Orientation ◽  
High Performance ◽  
Peer Assessment ◽  
Control Group ◽  
Self Assessment ◽  
Learning Goal ◽  
Learning Goal Orientation ◽  
Low Performance ◽  
And Performance ◽  
Avoidance Goal

While focusing on the moderating effects of initial performance-approach goal orientation and performance-avoidance goal orientation, this study aimed to examine the effects of self- and peer-assessment on the growth of learning goal orientation. We set up a control group and two experimental groups (self-assessment and peer-assessment groups) and conducted experimental lessons. The responses of the 63 subjects (control group: n = 14; self-assessment group: n = 25; peer-assessment group: n = 24) who attended these lessons were analyzed. The following observations were made: (1) the effect of peer-assessment on the growth of learning goal orientation may change depending on the initial performance-approach goal orientation or performance-avoidance goal orientation; (2) to increase learning goal orientation for students who have high performance-approach goal orientation or low performance-avoidance goal orientation, peer-assessment is effective; and (3) to increase learning goal orientation for students who have low performance-approach goal orientation or high performance-avoidance goal orientation, peer-assessment appears to be counterproductive.

Trace nanoanalysis

1994 ◽  
Vol 52 ◽  
pp. 940-941
Author(s):  
D. E. Newbury ◽  
R. D. Leapman
Keyword(s):  
High Performance ◽  
Secondary Ion Mass Spectrometry ◽  
Detection Efficiency ◽  
Volume Element ◽  
And Performance ◽  
Trace Constituents ◽  
Secondary Ion ◽  
Concentration Levels ◽  
Structure Properties

Trace constituents, which can be very loosely defined as those present at concentration levels below 1 percent, often exert influence on structure, properties, and performance far greater than what might be estimated from their proportion alone. Defining the role of trace constituents in the microstructure, or indeed even determining their location, makes great demands on the available array of microanalytical tools. These demands become increasingly more challenging as the dimensions of the volume element to be probed become smaller. For example, a cubic volume element of silicon with an edge dimension of 1 micrometer contains approximately 5×1010 atoms. High performance secondary ion mass spectrometry (SIMS) can be used to measure trace constituents to levels of hundreds of parts per billion from such a volume element (e. g., detection of at least 100 atoms to give 10% reproducibility with an overall detection efficiency of 1%, considering ionization, transmission, and counting).

Comparing the Mathematics Continuous Performance Test With Other Measures of Tests of Attention

2016 ◽  
Vol 32 (4) ◽  
pp. 291-297 ◽  
Author(s):  
Dubi Lufi ◽  
Shachar Pan
Keyword(s):  
Performance Test ◽  
Continuous Performance Test ◽  
Clinical Population ◽  
Control Group ◽  
Continuous Performance ◽  
Adhd Assessment ◽  
Research Reporting ◽  
Hyperactivity Disorder ◽  
Continuous Performance Tests ◽  
Better Than

Abstract. Several studies have shown that Continuous Performance Tests (CPT) can diagnose Attention Deficit Hyperactivity Disorder (ADHD) better than other tests. Research reporting comparisons of two or more CPT-type tests is scarce. The purpose of the study was to compare the Mathematics Continuous Performance Test (MATH-CPT) with another CPT-type test (CPT II) and a questionnaire (the Brown Scale). The comparison was carried out by looking at correlations among subscales and checking the precision of detecting ADHD. Ninety-five high school and college students participated in the study, 41 with ADHD were the research group and 54 were the control group. The participants performed the two tests and answered the questionnaire. The results showed that the MATH-CPT correctly identified 74.50% of the participants of both groups as compared to the 71.60% of the CPT II. Correlations between the two CPT-type tests were moderate; however, they were similar to correlations found in other studies comparing similar tools. The MATH-CPT, final attention formula, showed significant correlations with the Brown scales, while the CPT II, confidence index associated with ADHD assessment, showed nonsignificant correlations with the questionnaire. The study indicated that MATH-CPT can be used with a clinical population of ADHD and for research purposes.

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