• 대한음성학회지:말소리
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• 제33_34호
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• pp.91-98
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• 1997

Auditory discrimination which represents a very basic and important perceptual skill in children is a necessary condition for effective learning. It is necessary, therefore, to devise a standardized test tool for a reliable assessment of the auditory discrimination ability of children. The Korean Auditory Discrimination Test(KADT) is a tentative test tool that the authors have devised to meet such demand, i.e., to test the auditory discrimination ability of Korean children, both normal and hearing- and speech-impaired, between the ages of 4 and 8. The KADT consists of 40 pairs of words arranged in a systematic manner, of which thirty are 'minimal pairs' of words and the rest homophonous synonyms. The 30 minimal pairs are composed in such a way that major phonological contrasts involving consonants and vowels at initial, medial and final positions are duly represented. The test score will be determined by the number of right responses made by the children. Further attempts will be made to refine and improve KADT in future.

• 응용통계연구
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• 제20권1호
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• pp.79-89
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• 2007

Arizono와 Ohta(1989)에 의해 소개된 정규성 검정은 쿨백-라이블러 판별정보를 이용하고 있으며, 검정통계량의 유도에 기반이 되는 판별정보의 추정량을 얻기 위해 Vasicek(1976)의 표본엔트로피와 분산의 최대가능도 추정량을 사용했다. 그런데 두 추정량은 편향성을 가지게 되므로 보다 정확한 판별정보의 추정을 위해 비편향 추정량을 사용하는 것이 바람직하다. 본 논문에서는 편향을 수정한 엔트로피 추정량과 분산의 균일최소분산비편향 추정량을 사용하여 판별정보의 추정량을 구하고 이로부터 유도되는 검정통계량을 사용하는 개선된 정규성 검정을 제시한다. 제안한 검정의 특성을 규명하고 검정력 비교를 위해서 모의실험을 수행한다.

• 대한치과기공학회지
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• 제44권3호
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• pp.104-110
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• 2022

Purpose: This study analyzes the difficulty and discrimination of the paper-based test (PBT) and the computer-based test (CBT) according to item response theory, focusing on the National Dental Technician Examination. Methods: A mock test was conducted from September 15 to 23, 2020, and the final 179 (1 out of 180 absentees)people were the subjects of this study. Both frequency analysis and factor analysis were performed. The collected data were analyzed using IBM SPSS Statistics ver. 18.0 (IBM) and jMetrik programs. The significance level was set to 0.05. Results: The difficulty of the mock test was more easily responded to in CBT. It was also predicted that the CBT could better measure the ability of test takers than the PBT could. Conclusion: The difficulty, discrimination, and reliability of the questions were not affected by the examination method through the mock test. The feasibility of a future change to the CBT was confirmed by the National Dental Technician Examination.

• 노동경제논집
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• 제24권3호
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• pp.1-12
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• 2001

지방 출신은 서울/경기 출신에 비해 임금이 낮다. 이 차이가 기호적 차별에 기인하는지 또는 통계적 차별에 기인하는지를 판별하기 위해 임금격차에 대한 계량경제학적 모형을 제시했으며 그것을 이용하여 검정하였다. 이에 따르면 출신지역간 임금격차가 온전히 기호적 차별에 기인한다는 가설은 한계적으로 기각되었다. 즉 이 격차의 일부는 통계적 차별에 기인한다. 본고의 통계적 차별은 임금이 생산성에 따라 결정되는 과정에서 나오는 것으로 문제가 되지 않으므로 정부가 개입할 필요가 없다.

• 한국가정과학회지
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• 제6권2호
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• pp.41-48
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• 2003

The purpose of this research was to analyze the sexual discrimination level of woman employee in hotel industry. This research was based on a survey. The survey was conducted on 130 individuals who were working in hotels in Seoul. With collected data, regression analysts, T-Test and analysis of variances were utilized using SAS program. The results showed that there were no evidences of sexual discrimination among tile individuals' educational levels and the departments. Whereas, there were evidences of sexual discrimination, sexual harassment. discrimination against employment, and workload among the position levels within a corporation. Finally. the analysis showed that there were sexual discrimination in a promotion policy. retirement policy. workload. and employment during employment period. However, there were no evidences of sexual discrimination in ether areas.

• 한국정보교육학회:학술대회논문집
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• 한국정보교육학회 2011년도 동계학술대회
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• pp.203-209
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• 2011

본 연구는 선행 연구 분석을 통해 찾아낸 정보 영재의 특성 중 하나인 알고리즘 능력을 측정하여 정보 영재를 판별할 수 있는 도구를 교육용 프로그래밍 언어인 스크래치를 활용하여 개발하였다. 판별 도구는 크게 단일 스프라이트, 다중 스프라이트로 나누고 각각 블록추가, 블록 순서 변경, 변수 값 수정, 블록 종류 변경으로 세분화하여 문항을 개발하였다. 본 연구에서 개발한 정보 영재 판별 도구는 프로그래밍 언어를 배우지 않은 학생들도 쉽게 조작할 수 있는 교육용 프로그래밍 언어 중 하나인 스크래치를 활용해 제작되었다, 그러므로 프로그래밍을 배우지 않은 일반 학생들을 대상으로 판별 도구를 이용해 알고리즘 능력을 측정하고 분석한다면 많은 학생들의 정보 영재성을 판별하는데 기여할 것으로 기대한다.

• 교육시설 논문지
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• 제18권3호
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• pp.23-33
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• 2011

This study investigates the evaluation on simple comparison and seeking hidden figures works under LED illumination conditions according to three types of color temperatures (7000K, 5000K, 3000K) in the classroom, Since the objective of this study is to develop an electric lighting conditions suitable for students in the classroom, the performance of concentration and visual discrimination by students under three types of LED illumination conditions were analyzed. The 4 kinds of simple tests concerning with concentration and 2 types of tests for visual discrimination were developed, and test results under natural light and LED illumination by 3 types of color temperatures were analyzed. There were differences on concentration as well as visual discrimination performance in most cases by t-test ($p{\leq}0.05$). For further analysis among three types of color temperatures and natural light, ANOVA tests were performed. The test results shows that illumination condition plays an important role when students try to concentrate on simple comparison of characters, figures or colors and seek hidden figures. The experimental results of this study might be applied to designing better luminous environment.

• 식품과학과 산업
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• 제52권1호
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• pp.20-31
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• 2019

Sensory perception of food/beverage products is one of the most important quality factors to determine consumer acceptability and thus sensory discrimination methodology has been a vital tool for quality management. Signal detection theory(SDT) and Thurstonian modeling provide the most advanced psychometric approach to modeling various discrimination methods. In these theories, perceptual and cognitive decisional factors are considered so that, a fundamental measure of sensory difference (d') can be computed, independent of test methods used. In this paper, sensory discrimination analysis based on SDT and Thurstonian modeling is introduced for more accurate and systematic applications of sensory and hedonic quality management in industry. Ways to realize the statistical power and relative sensitivity of sensory discrimination methods theorized in SDT and Thurstonian modeling in practice, are also discussed by using a case study of the Nongshim quality management program for drinking water in which SDT A-Not A test methodology was further optimized.

• 영어어문교육
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• 제18권2호
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• pp.189-211
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• 2012

The purpose of the study was to explore ways to improve the test items on the Korean scholastic ability test. More specifically, the researchers investigated whether use of the target language in test items would make a difference in total scores, discriminatory power, and item difficulty. A total of 288 high school seniors participated in the study. The subjects were divided into the experimental group (N=145) and the control group (N=143). A 25-item test resembling the Korean scholastic ability test was administered to both groups. The experimental group was given items whose questions and alternatives were all presented in English, whereas the control group was given items whose questions and alternatives were presented in Korean only. Statistical analyses revealed that use of English vs. Korean in the questions and alternatives made a significant difference in total scores, item discrimination, and item difficulty level. The findings strongly suggest that use of English is one way to improve the quality of the Korean scholastic ability test by enhancing item discrimination and face validity. Considering that the test in question is a high-stakes exam in Korea, further research on how to improve the Korean scholastic ability test is urgently called for.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2000년도 7월 학술대회지
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• pp.366-370
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• 2000

Thie aim of this paper is to assess the Japanese students' listening ability to distinguish English sounds by using the modified version of the English Auditory discrimination Test which was devised by the author in 19998.