• Nuclear Engineering and Technology
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• v.55 no.7
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• pp.2407-2418
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• 2023

Internal replaceable electronic module substitutions can impact EMC (ElectroMagnetic Compatibility) qualification testing and results if EMC testing is conducted at the cabinet level. The impact of component substitutions on EMC qualification results therefore should be evaluated. If a qualitative evaluation is not adequate to ensure that the modified product will not impact the cabinet level EMC qualification results, a new qualification testing should be conducted. Component level retesting should be conducted under electromagnetically equivalent conditions with the cabinet level test. This paper analyzes the propagation of conducted susceptibility test waveforms in a representative cabinet and evaluates the impact of component substitutions on cabinet level EMC qualification results according to the location of the replacement items. A guideline for a qualitative evaluation of the impact of component substitutions is described based on the propagation of the conducted susceptibility test waveforms. A module level test method is also described based on an analysis of the shielding effectiveness of the cabinet.

• 대한공업교육학회지
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• v.35 no.2
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• pp.182-203
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• 2010

The purpose of this study was to analyze of Information-related subjects on industry department of college scholastic ability test in Korea and Japan. These were compared with information-related foundation and data-technology foundation, programming on industry department test of vocational education area in college scholastic ability test in Korea and Japan and suggest implications of items development of college scholastic ability test in Korea. Based on the results of study, the following recommendations were made for new direction of items development of college scholastic ability test in Korea. First, Information-related foundation on industry department of National Center for University Entrance Examinations in Japan consisted of basic informations of agricultural, industry, commercial department etc. of vocational education area. Similarly it is necessary to introduce 'computer-related foundation' consist of common contents of several departments of college scholastic ability test in Korea. Second, it is necessary to diverse sub-item situations different from main item situations and introduce diverse situations of set type items of college scholastic ability test in Korea. Third, test for National Center for University Entrance Examinations in Japan consisted of several types items like this selecting answers on multi-answer group. it is necessary to introduce short answer type, completion type and supply type of college scholastic ability test in Korea.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.5
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• pp.323-330
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• 2018

This study examined the fairness of the teaching aptitude and personality test assigned to pre-service engineering teachers in a graduate school of education based on measurement traits. For this study, we analyzed the teaching aptitude and personality test scores of 99 students enrolled in engineering education in a graduate school of education located in the Seoul metropolitan area from 2013 to 2017. The main results were as follows. First, the estimated variance due to residual was generally the highest, followed by nesting of items within domains, pre-service engineering teachers, interactions of pre-service engineering teachers with domains, domains, and occasions. Second, dependability coefficients were better indicators than Cronbach's because the latter may have been overestimated by applying the traditional reliability coefficient in inappropriate manners. Third, the teaching aptitude and personality test can be applied to pre-service engineering teachers in a graduate school of education based on empirical evidence considering dependability coefficients. Fourth, a total of 96 items from the original 210 items, with 2 occasions and 12 domains containing 8 items in each domain, were optimal measurement conditions to reach adequate degrees of reliability based on the total number of items. Finally, the results were discussed, the study limitations described and future research directions proposed.

• Journal of The Korean Association For Science Education
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• v.37 no.3
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• pp.429-440
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• 2017

This study investigated the influence of paired think-aloud problem solving on interactions among the pedagogical content knowledge (PCK) components considered in the processes of making written test items by pre-service chemistry teachers. The processes of making written test items using paired think-aloud problem solving in four small groups consisting of two pre-service chemistry teachers were recorded and transcribed. The analysis of the results revealed that the 'assessment in science education' of the five PCK components, regardless of the roles (solver or listener), was most frequently used in making written test items. 'Subject matter knowledge' and 'students' were also frequently used although less than the previous component. However, 'curriculum for science education' and 'instructional strategies and instruction for science education' was a little used. In the aspects of integration, the integrations between two or three components of various types were frequently found. The integrations among four or five components were also slightly found. However, the integrations of 'curriculum for science education' with the other components were less frequently found. The integrations of 'instructional strategies and instruction for science education' with other components were hardly found. The usefulness, limitations, and effective use of paired think-aloud problem solving as a strategy improving competency to make written test items and the PCK of pre-service teachers were discussed on the basis of the results.

• Journal of The Korean Association For Science Education
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• v.36 no.5
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• pp.769-781
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• 2016

This study investigated the interactions among the PCK components of pre-service secondary chemistry teachers considered in the processes of making written test items individually and in small groups. The processes of making written test items individually for 8 pre-service teachers was studied through the think-aloud method. The analysis of the results revealed that the 'assessment in science education' of the five PCK components was most frequently used in making test items. 'Curriculum for science education,' 'subject matter knowledge,' and 'students' were also frequently used although fewer than the previous component. However, 'instructional strategies and instruction for science education' was hardly used. The integrations between two or three components with various types were frequently found. However, integrations among four to five components were not found. The processes of making written test items in two small groups consisting of four pre-service teachers were observed. The analysis of the results revealed that the PCK components used in small groups were similar to those in the individual processes. However, 'curriculum for science education' was less frequently used, and the numbers of subcategories used at a relatively high frequency increased from other four components in small groups. In the aspects of integration, the proportion of the integrations between two components decreased and that for three components increased compared with those in the individual processes. The integrations among four or five components were also newly found. However, the integrations of 'curriculum for science education' with the other components were less frequently found. The integrations of 'instructional strategies and instruction for science education' with other components were still hardly found.

• Journal of Korean Academy of Nursing
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• v.32 no.3
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• pp.395-405
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• 2002

The purpose of this study was to develop the instrument to measure family functioning for Korean family with a chronic ill child, and to test the validity and reliability of the instrument. Method: The items of instrument were consisted based on researchers' previous study of concept analysis of the Korean family functioning. Twenty six item scale was developed with six domains. In order to test reliability and validity of the scale, data were collected from the 231 families, who have a child with a chronic illness. Data was collected between August and September in 2001 in a General Hospital in Seoul, Korea. Result: The results were as follows: As a result of the item analysis, 24 items were selected from the total of 26 items, excluding items with low correlation with total scale. Six factors were evolved by factor analysis. Six factors explained 61.4% of the total variance. The first factor 'Affective bonding' explained 15.4%, 2nd factor 'External relationship' 11.8%, 3rd factor 'Family norm' 10.5%, 4th factor 'Role and responsibilities' 8.3%, 5th factor ' Communication' 7.9%, and the 6th factor 'Financial resource' explained 7.3%. Cronbach's $\alpha$ coefficient of this scale was .87 and Guttman spilt- half coefficient was .84. Conclusion: The study support the reliability and validity of the scale. There were distinct differences in dimensions of family functioning scales developed in the U. S.

• Journal of the Korea Fashion and Costume Design Association
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• v.12 no.1
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• pp.141-151
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• 2010

The purpose of the study was to offer basic documents to the textile fashion industry by investigating changes of figures by various factors as each other social and environment. This study analyzes characterization and classification of body types of Mongolian men. 100 adult subjects within the 18 to 24 age group were studied. The physical measurements of the research subjects come up to a total of 63 items. Data was statistically analyzed with SPSS program using basic statistics, t-test, one-way ANOVA, Duncan-test, factor analysis and cluster analysis. The conclusions are as follows. In the result of factors analysis in physical measurements of Mongolian men, 10 factors such as the vertical size of body, on the obesity of body, the leg size, the bust from back length, the bust from front length, the shoulder size were extracted. The accumulated contributory rate of these was 73.86%. The cluster analysis for the comparison of the body types, by categorizing the body types produced three types. The comparison of 45 items in physical measurements between Korean men and Mongolian men resulted in the differences in 20 items. While the height items including stature between them showed negligible differences.

• The Mathematical Education
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• v.38 no.2
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• pp.129-144
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• 1999

The purpose of our work is to developing the program of math. camp to improve underachiever's mathematical disposition. To do this, the following research were taken; (1)Analysis of current status of programs for underachievers (2)Analysis of inclination to mathematics(We collected the data from 2 classes of middle schools) (3)Prepare and apply the program of math. camp for the students including underachievers, and then analysis the effect of the math. camp The results of this study is as follows; (1)Only 40% of investigated schools have their own programs for underachievers. But almost all general high schools do not have such programs because students do not want. More than half of the investigated teachers suggested that the most important thing for underachievers is the induction of motivation for mathematics. (2)Many students dislike mathematics from 5∼6 grade of elementary school, and more than 50% of students think that 'measure' and 'equations' items are difficult. (3) After attending the math. camp based on the games and activities in small groups, the students in the middle-ranking group showed more positive reactions against the items of mathematical disposition and attitude tests. The students in the row-ranking group were improved in the 'self-confidence' and 'will' items of mathematical disposition test and in the 'superiority' and 'interest' items of mathematical attitude test.

• Journal of the Korean Society of Clothing and Textiles
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• v.23 no.7
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• pp.941-952
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• 1999

The purposes of this study were to provide the fundamental data on elementary school girls' somatotype for their clothing construction by contemplating the stage of physical growth dividing into the period of school age and characterizing the variation of body type according to the school age. The results are as follows : 1. Form the results of one-way variables analysis and multiple comparson test(Duncan's test) classification of the period school age can be divided into 'early grade(1 2 grade)' ' middle grade(3 4 grade)' and 'later grade(5 6 grade)' 2. As the results of analyzing Mean Coefficient of Variation and Standard Deviation graph for direct and indirect measurments and index especially of the Coefficient Variation that explain individual difference of growth the items of height indicates individual difference related with height of lower body of early grade group the items of length individual difference related with length of upper body of later grade group and the items of circumference make little difference. The items of anagle makes pretty higher value that direct measurements and especially in lower angle of chest make a distinctive difference, This fact proves that children's somatotype change from the belly part extruded forwards of early and middle grade to the upper body part slanted slightly forward of later grade.

• Journal of Korean Academy of Nursing
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• v.45 no.5
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• pp.684-693
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• 2015

Purpose: This methodological study was conducted to develop and test a cultural competence scale for nursing students. Methods: Based on the five constructs of cultural competency identified in the conceptual analysis of Suh, 76 items for the tool were derived initially. These items were reduced to 58 items after content validity tests (two times) by 6 multicultural experts. Data collected from 526 nursing students were utilized to test the validity and reliability of the preliminary tool. Item analysis, factor analysis, Pearson correlation coefficients, and Cronbach's alpha were used for the analysis. Results: Twenty-seven items were selected for the final scale, and categorized into 5 factors explaining 62.1% of the total variance. Cronbach's alpha was .91 and the reliability of the subscales ranged from .76 to .91. Criterion validity between the developed tool and empathy (r=.26, p <.001) was significant. Conclusion: The results show that this scale can provide scientific and empirical data when evaluating the effectiveness of school curriculums or multicultural empowerment programs regarding cultural competence of nursing students.