• 영어어문교육
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• 제18권1호
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• pp.171-195
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• 2012

While noticing that there is insufficient interest in the assessment of EFL learners' vocabulary levels or sizes, the researchers developed two tests identical in form (Forms A and B) to assess the lexical knowledge of Korean university learners at the $1^{st}{\sim}10^{th}$ 1,000 word bands by adapting a pre-established vocabulary levels test (VLT). Of equal concern was to investigate if the VLT was equally a valid and reliable instrument to be used on measuring the lexical knowledge of EFL learners. The participants were 804 university freshmen enrolled in a General Education English Course from four different colleges. The learners were asked to respond to either Form A or B. While scores generally fell towards the lower frequency bands, multiple regression found the Korean College Scholastic Ability Test (CSAT) to be a significant variable for predicting the learners' vocabulary sizes. From a methodological perspective, however, noticeable differences between Forms A and B could be found with item response theory analysis. The findings of the study provide suggestions on how future VLT for testing EFL learners may have to be redesigned.

• 대한가정학회지
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• 제40권2호
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• pp.67-86
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• 2002

The purpose of this research is to offer a method to derive the body shapes and pose factors with resets from analyzing factors by using the measurement values of human body. 297 male subjects in their twenties participated in this study. 54 anthropometric and 35 photographic measurements were taken from each subject. Data is the several typical items selected among items and you have to make an index value by using these typical items and convert it. The index has high correlation with each item, is easy to be measured and is to be used after selecting an important item in designing prototype. With results of analyzing reliability level by each item, correlation and items that factor loading is low, the item that the correlation is high is to be removed within the range that maintains the reliability level. Five factors of the front part and seven factors of the profile came to be derived from this kind of process.

• 한국한의학연구원논문집
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• 제13권1호통권19호
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• pp.109-114
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• 2007

The high position condition 10 escape which the obesity person appeals. Obesity Pattern-Identification question it will yell and 243 subjects which to the obesity in the patient of 517 subjects which draw up correspond. (longitude obesity 153 person, altitude obesity 90 person) against it analyzes. In order to analyze the reliability of the items which diagnose each Pattern-Identification it used Cronbach alpha coefficient and escape it did the alpha of each item. Alpha value of each Pattern-Identification than appears more highly the item which it will be able to consider an elimination in the item which decreases a reliability. In that phlegm-retention syndrome is bigger alpha coefficient 0.784 than 'meal quantity is few'(0.787) a possibility of seeing in the item which decreases a reliability to the place where it diagnoses it puts in phlegm-retention syndrome.

• 산업경영시스템학회지
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• 제38권1호
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• pp.124-130
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• 2015

In many inventory situations, items for sales are generally stocked in a multiple of variations called stockkeeping units, such as size, color, style, and so on. For better management performance on sales items, proper and effective management is necessary for the stockkeeping units. In dealing with many items and those stockkeeping units, individual inventory analysis for each stockkeeping unit needs large amount of time or cost. Also the individual approach in inventory planning increases the demand variation of an item as the result by combining of demand variations of all stockkeeping units, accordingly the inventory turnover ratio and profitability are dropped down. This research suggests an effective method of systematic control of total stockkeeping units by generating from the total item basis, and shows how to reduce the safety stock and the average inventory with attaining a planned customer fill rate of the item and each stockkeeping units.

• 아동학회지
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• 제23권4호
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• pp.199-213
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• 2002

This preliminary study aimed to develop 3 assessment scales for self-evaluation by day care directors and teachers. The development of major areas of evaluation and items as well as evaluation criteria for each item was based on the analysis of related research and major evaluation instruments. A panel of experts in early childhood education examined the contents. The 3 preliminary scales were administered in 87 day care centers; data were analyzed by item response distribution, item discrimination, and reliability of the scales. Items indicating low item discrimination were deleted and minor revisions were made to improve psychometric characteristics of each scale. The final version of the 3 scales is valid for use as self-evaluation instruments by day care directors and teachers.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2011년도 춘계학술발표대회 논문집
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• pp.267-272
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• 2011

The purpose of this study was finding selecting attributes of serviced residence and suggesting right direction of serviced residences. Research methods weresocial survey research with questionnaire and field survey. Field survey was conducted from September 20, 2010 to November 9, 2010 on 6 serviced residences. 106questionnaire survey data collected near by CBD. SPSS 18.0 program was used for Statistical analysis. Majorfinding were following; analysis methods were Frequency, $x^2$-test and ANOVA. Selecting attributes were divided into general attributes, facilities, services and individual units. First, pleasant atmosphere was the most important item amonggeneral attributes. Second, buffet restaurant was the most important items among facilities. Third, mail delivery service was the most important item among services. Fourth comfort was the most important item among individual units. In conclusion, serviced residences need more elaborate management, improvement of lobby lounge, provision of optional services and comfortable environment of individual units.

• 수산해양교육연구
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• 제18권1호
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• pp.49-57
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• 2006

The purpose of this study was to develop and validate of mentoring-function scale for college students. This research collected preliminary data from 219 college students' responses for item and scale quality analyses, and collected 289 college students' for item and scale quality analyses. Data were analyzed to obtain item quality, reliability, and validity analysis. The results of this study were as follows; The mentoring-function scale was defined by 4 factors. The 4 factors were 'psycho-soical', 'career-development', 'role-modeling', 'friendship'. Criterion-related validity evidence was obtained from the correlation analysis as the criterion measures.

• 한국신뢰성학회지:신뢰성응용연구
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• 제6권2호
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• pp.151-161
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• 2006

This article is concerned with cost analysis model in periodic maintenance policy. The repair policy is differently applied according as unit importance during an item being used and unit restoration during an item being failed. So in this paper the repair policy with minimal repair is considered as follow : as the occurrence of failure between minimal repair and periodic interval time, unit is replaced by a spare unit until the periodic maintenance time arrived. Then total expected cost per unit time is calculated according to scale parameter of failure distribution in a view of customer's. The total expected costs are included repair and usage cost : operating, fixed, minimal repair, periodic maintenance and spare unit cost. Numerical example is shown in which failure time of item has Erlang distribution.

• 산업경영시스템학회지
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• 제18권36호
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• pp.287-295
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• 1995

This paper is concerned with cost analysis model in periodic maintenance policy. Generally periodic maintenance policy in which item is repaired periodic interval times. And in the article minimal repair is considered. Mimimal repair means that if a unit fails, unit is instantaneously restored to same hazard rate curve as before failure. In the paper periodic maintenance policy with minimal repair is as follows; Operating unit is periodically replaced in periodic maintenance time, if a failure occurs between minimal repair and periodic maintenance time, unit is replaced by a new item until tile periodic maintenance time comes. Also unit undergoes minimal repair at failures in minimal-repair-for-failure interval. Then total expected cost per unit time is calculated according to scale parameter of failure distribution. Maintenance cost factors are included operating, fixed, minimal repair, periodic maintenance and new item replacement cost. Numerical example is shown in which failure time of system has weibull distribution.

• International Journal of Contents
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• 제15권3호
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• pp.1-6
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• 2019

The purpose of this study was to identify the psychometric properties of the vocational ability scale used in the 8th Panel Survey of Employment for the Disabled in Korea by using the Rasch model. The sample data was collected from 398 individuals with intellectual disabilities. Item fitness, item difficulty, the appropriateness of the rating scale, and the separation index of the vocational ability scale were evaluated. All 15 items show an appropriate fitness level. The analysis of item difficulty indicate that modifications are required. Specifically, the need for the addition of less difficult question items is identified. The use of a 5-point rating scale is shown to decrease the test difficulty in terms of clarity and readability when appropriate and a 4-point modification is also determined as appropriate. With respect to the outcomes of the analysis, the person separation reliability value and separation index are high, and the reliability of the items is also high.