A Dummy Load for Performance Test of Sonar Transducer

This paper describes performance and durability test results of three parallel stationary diesel engine using fatty acid methyl ester biodiesel blend fuel with composition B10 (10% biodiesel FAME), B15 (15% biodiesel FAME), and B0 (100% regular diesel fuel) as a baseline. Each engine was tested during 1000 hours. Performance and smoke test without generator was conducted on engine dynamometer before and after durability according to the National Standard of Indonesia. Performance test with variable load also conducted with generator attached using lamps as dummy load. Test result showed that all of three engines with difference fuel have relatively identical performance and not seen any significant decrease in performance during 1000 hour endurance test. Comparing to the B0, fuel consumption of B10 and B15 was higher in average of 1.4 % and 2.4 %, where are smoke emission decrease in order of 4.5% to 22.5%. For setting the engine at standard conditions, the best performance obtained for a mixture of 10% biodiesel (B10).Pada Makalah ini disampaikan hasil penelitian uji unjuk kerja dan ketahanan pada tiga mesin diesel stasioner (generator set) secara paralel dengan menggunakan bahan bakar campuran biodiesel-solar dengan komposisi B10 (10% biodiesel FAME), B15 (15% biodiesel FAME), dan B0 (100% solar) sebagai pembanding, masing-masing diuji selama 1000 jam. Uji unjuk kerja dan emisi gas asap mesin tanpa generator dilakukan pada engine dynamometer baik sebelum maupun sesudah uji ketahanan. Pengujian unjuk kerja dengan variasi beban dan generator terpasang juga dilakukan dengan menggunakan lampu sebagai beban. Hasil uji menunjukkan bahwa ketiga mesin dengan bahan bakar berbeda mempunyai unjuk kerja yang relatif identik dan tidak terlihat adanya penurunan unjuk kerja yang berarti selama uji ketahanan 1000 jam. Secara rata rata dibandingkan dengan B0, konsumsi bahan bakar Genset dengan B10 dan B15 lebih tinggi masing-masing sebesar 1,4 % dan 2,4 %, sedangkan emisi gas asap menurun antara 4,5 % sampai dengan 22,5 %.Untuk setting mesin pada kondisi standar, kinerja terbaik untuk campuran biodiesel 10% (B10).Keywords: Biodiesel, engine performance, durability, exhaust gas emission.

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Can Behavioral Speech-In-Noise Tests Improve the Quality of Hearing Aid Fittings?

Perspectives on Audiology ◽

10.1044/poa7.1.8 ◽

2011 ◽

Vol 7 (1) ◽

pp. 8-14

Author(s):

Robert Moore ◽

Susan Gordon-Hickey

Keyword(s):

Working Memory ◽

Speech Perception ◽

Performance Test ◽

Hearing Aid ◽

Speech Perception In Noise ◽

Speech In Noise ◽

Acceptable Noise Level ◽

Perceptual Performance ◽

Noise Test

The purpose of this article is to propose 4 dimensions for consideration in hearing aid fittings and 4 tests to evaluate those dimensions. The 4 dimensions and tests are (a) working memory, evaluated by the Revised Speech Perception in Noise test (Bilger, Nuetzel, & Rabinowitz, 1984); (b) performance in noise, evaluated by the Quick Speech in Noise test (QSIN; Killion, Niquette, Gudmundsen, Revit, & Banerjee, 2004); (c) acceptance of noise, evaluated by the Acceptable Noise Level test (ANL; Nabelek, Tucker, & Letowski, 1991); and (d) performance versus perception, evaluated by the Perceptual–Performance test (PPT; Saunders & Cienkowski, 2002). The authors discuss the 4 dimensions and tests in the context of improving the quality of hearing aid fittings.

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A new motor performance test in a prospective study on children with suspected myopathy

Developmental Medicine & Child Neurology ◽

10.1017/s0012162206001587 ◽

2006 ◽

Vol 48 (09) ◽

pp. 739 ◽

Cited By ~ 3

Author(s):

Willeke A van den Beld ◽

Gitty AC van der Sanden ◽

Ton Feuth ◽

Anjo JWM Janssen ◽

Rob CA Sengers ◽

...

Keyword(s):

Prospective Study ◽

Motor Performance ◽

Performance Test ◽

A Prospective Study

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Contingent Negative Variation (CNV) bei Kindern mit hyperkinetischem Syndrom - eine experimentelle Untersuchung mittels des Continuous Performance Test (CPT)

Zeitschrift für Kinder- und Jugendpsychiatrie und Psychotherapie ◽

10.1024//1422-4917.28.4.239 ◽

2000 ◽

Vol 28 (4) ◽

pp. 239-246 ◽

Cited By ~ 25

Author(s):

K. Hennighausen ◽

G. Schulte-Körne ◽

A. Warnke ◽

H. Remschmidt

Keyword(s):

Contingent Negative Variation ◽

Performance Test ◽

Continuous Performance Test ◽

Continuous Performance ◽

Experimentelle Untersuchung

Zusammenfassung Fragestellung: Gibt es neurophysiologische Korrelate der Aufmerksamkeitsstörung beim hyperkinetischen Syndrom (HKS) und welche Bedeutung haben diese für die Ätiologie der Störung. Methodik: Selektive Aufmerksamkeitsprozesse wurden anhand des zweistufigen Continuous Performance Test (CPT) bei 18 Jungen mit hyperkinetischem Syndrom (HKS) untersucht und mit einer nach dem Alter parallelisierten Kontrollgruppe von 21 Jungen verglichen. Die Altersspanne der Stichprobe betrug 6 bis 12 Jahre. Parallel dazu wurden ereigniskorrelierte Potentiale (EKP) während des Tests an den Elektrodenpositionen Fz, Cz, Pz und Oz mit Referenz zu verbundenen Ohren abgeleitet. Ergebnisse: Im EKP nach dem präparatorischen Stimulus konnten zwei Komponenten der Contingent Negative Variation (CNV) mit unterschiedlicher topographischer Verteilung identifiziert werden (CNV-1: 600 bis 1100 ms und CNV-2: 1000 bis 1500 ms nach Stimulus). Die Stichproben unterschieden sich nicht auf der Verhaltensebene (Fehlerrate und Reaktionszeit). Signifikante Gruppenunterschiede ergaben sich hinsichtlich der Topographie der beiden CNV-Komponenten. Kinder mit HKS zeigten im Vergleich zu Kontrollkindern eine signifikant niedrigere CNV-1 über der frontalen und eine Tendenz zu stärkerer Negativierung (CNV-1 und CNV-2) über der occipitalen Elektrode. Schlussfolgerungen: Die Ergebnisse unterstützen die Hypothese einer Unterfunktion frontaler inhibitorischer Prozesse bei Kindern mit HKS.

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Self-Report vs. Computerized Measures of Impulsivity as a Correlate of Suicidal Behavior

Crisis ◽

10.1027//0227-5910.22.1.27 ◽

2001 ◽

Vol 22 (1) ◽

pp. 27-31 ◽

Cited By ~ 47

Author(s):

Netta Horesh

Keyword(s):

Suicidal Behavior ◽

Attention Deficit Disorder ◽

Impulse Control ◽

Performance Test ◽

Adolescent Suicide ◽

Continuous Performance Test ◽

Self Report ◽

Suicide Attempters ◽

Computerized Measures ◽

Adolescent Suicide Attempters

Objectives: To compare the use of a self-report form of impulsivity versus a computerized test of impulsivity in the assessment of suicidal adolescent psychiatric inpatients. Methods: Sixty consecutive admissions to an adolescent in patient unit were examined. The severity of suicidal behavior was measured with the Childhood Suicide Potential Scale (CSPS), and impulse control was measured with the self report Plutchik Impulse Control Scale (ICS) and with the Test of Variables of Attention (TOVA), a continuous performance test (CPT). The TOVA is used to diagnose adolescents with attention deficit disorder. Results: There was a significant but low correlation between the two measures of impulsivity. Only the TOVA commission and omission errors differentiated between adolescent suicide attempters and nonattempters. Conclusions: Computerized measures of impulsivity may be a useful way to measure impulsivity in adolescent suicide attempters. Impulsivity appears to play a small role only in nondepressed suicidal adolescents, especially boys.

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

European Journal of Psychological Assessment ◽

10.1027/1015-5759/a000261 ◽

2016 ◽

Vol 32 (4) ◽

pp. 291-297 ◽

Cited By ~ 1

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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