• 재활치료과학
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• 제11권3호
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• pp.65-80
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• 2022

목적 : 본 연구는 라쉬 분석을 이용하여 12개 항목의 스트레스 대처 척도의 항목 심리측정 속성을 조사하고자 하였다. 연구방법 : 본 연구는 ICPSR(Inter-university Consortium for Political and Social Research)에서 제공하는 공공 자료를 활용하여 로스엔젤레스에 거주하는 노인 480명을 대상으로 조사하였다. 주성분 분석을 사용하여 척도의 일반적 요인을 조사하였다, 라쉬 분석의 내·외적합 지수의 제곱평균(Mean Square)과 표준값(ZSTD)를 통해 항목 적합도를 알아보고, 척도의 신뢰도와 쉬운 항목과 어려운 항목을 식별하기 위해 항목-난이도 계층을 조사하였다. 마지막으로 성별과 연령 그룹에 대해 차등 항목 기능을 조사하였다, 결과 : 주성분 분석을 통해 스트레스 태처 척도의 12개 항목이 하나의 요인으로 구성되었음을 가정하였다. 라쉬 분석을 통하여 항목 2번이 부적합한 결과로 제거되었다(내적합 제곱평균=1.33, 내적합 표준값=5.05, 외적합 제곱평균=1.56, 외적합 표준값=7.15). 항목 2번을 제외한 11개 항목의 평가자 층(Person Strata)은 3.10으로 신뢰도 지수 0.81에 해당하는 값을 보였다. 차등 항목 기능을 조사한 결과 성별과 연령 그룹에 대한 차등 항목 기능은 없었다. 결론 : 라쉬 분석을 통해 개정된 COPE-11은 항목 간 심리측정 속성이 적절하여 측정 시 시간 단축과 정확한 측정이 가능할 것으로 사료된다.

• 한국전문물리치료학회지
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• 제17권1호
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• pp.43-52
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• 2010

The Dynamic Gait Index (DGI) was developed and widely used as a clinical tool to assess balance performance during gait. The purpose of this study was to validate the Korean translated DGI using Rasch analysis. A total of 105 community-dwelling elderly was participated in this study (age range = 65~95 years; mean = 78.0 years). The translated DGI showed sound item psychometric properties, and the 8 items were arranged in order of difficulty for the total participants. The most difficult item was 'Steps' and the easiest item was 'Level surface'. Also, each of the original 4 rating scale categories satisfied the Linacre's essential criteria suggestions for optimal rating scale category effectiveness. Although, thirty eight person (36.2%) showed the maximal high score, but the most of them was no history of fall in the preceding year. For subjects who has falling history, all of the person's ability was arranged within the item's difficulty. The 8-item Korean translated DGI can be used to measure gain in elderly person with balance disorders without compromising important clinical measurement characteristics in Korea.

• 가정과삶의질연구
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• 제21권1호
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• pp.13-24
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• 2003

The purpose of this article Is to review the problems in using Hazan & Shaver,s adult attachment inventory as spousal attachment inventory. In summary, Hazan & Shaver's forced-choice inventory is required to caution in using for spouse attachment inventory because of the disproportionally higher secure-attachment type ratio(72% - 89%). It was previous reseaches that used multi-item Likert inventory instead of Hazan & shaver's forced-choice inventory for result analysis because of disproportionally higher secure-attachment type ratio. Although Hazan & shaver's forced-choice inventory was mostly used for young unmarried adults, Using Hazan & shaver's forced-choice inventory as spouse attachment inventory for married adults seem to be inappropriately. Hazan & Shaver's multi-item Likert inventory has the problem of poor reliability in insecure-avoidence factor especially. Hazan & Shaver's one item Likert inventory has the problem of social desirability.

• 인터넷정보학회논문지
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• 제10권3호
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• pp.151-157
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• 2009

많은 이러닝 시스템들은 기존의 설정된 문항난이도를 기반으로 학습자에게 학습정보를 제공하고 있으며, 학습자는 정해진 학습과정에 따라 학습을 수행하고 있다. 이는 학습과정 중에서 학습자마다 학습을 이해하는 정도가 다름에도 불구하고 학습자는 정해진 난이도와 학습과정을 따라야 함으로 효율적인 학습효과를 나타내기 어렵다. 본 연구에서는 학습자가 학습과정중에 이해하는 정도를 시스템이 파악하여 능동적으로 난이도 및 학습과정을 조절하는 학습자 적응형 이러닝 시스템을 제시하고자 한다. 이를 통하여 학습자는 오프라인에서의 학습과 같은 대화형 학습을 통해 온라인 학습이 가져오는 획일적 학습에서 벗어나 보다 높은 학습효과를 높일 수 있다.

• International Journal of Contents
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• 제4권2호
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• pp.19-23
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• 2008

This paper presents a novel method to construct a personalized e-Learning system based on dynamic estimations of item parameters and learners' abilities, where the learning content objects are of the same intrinsic quality or homogeneously distributed and the estimations are carried out using IRT(Item Response Theory). The system dynamically connects the test and the corresponding learning procedures. Test results are directly applied to estimate examinee's ability and are used to modify the item parameters and the difficulties of learning content objects during the learning procedure is being operated. We define the learning unit 'Node' as an amount of learning objects operated so that new parameters can be re-estimated. There are various content objects in a Node and the parameters estimated at the end of current Node are directly applied to the next Node. We offer the most appropriate learning Node for a person's ability throughout the estimation processes of IRT. As a result, this scheme improves learning efficiency in web-base e-Learning environments offering the most appropriate learning objects and items to the individual students according to their estimated abilities. This scheme can be applied to any e-Learning subject having homogeneous learning objects and unidimensional test items. In order to construct the system, we present an operation scenario using the proposed system architecture with the essential databases and agents.

• 한국응용과학기술학회지
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• 제6권2호
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• pp.75-87
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• 1989

Study to report this result that state of lipid peroxides while beef Bulgogi Coocking of general-seasoning, sale-seasoning, each flavour's characteries. Raw meat show high lipid peroxides amount and high increasing in heat and antioxidative effected by flavour about lipid peroxidies change existence by beef Bulgogi seasoning. Change of lipid peroxides are significant increased in meat cold storage and cold storage and cold storage heat meat after while 30 minute after seasoned and reduced 9 hour - 33 hour cold storage raw meat, that change of lipid peroxides by cooking time. every condition by adding soften were revealed lipid peroxides, reduce. Lipid peroxide change are very high while no-sugar in raw meat and not a stone look in 9-hour raw-meat after seasone about antioxidative effect by each flavour characteristic TBA showed very high not take parched seasone seeds item about 30-minute cold storage beat raw-meat and high lipid peroxides revealed increase in not take wine item, not take a pear item, in 9 hour cold storage heat-meal and it showed little amount not-sugar item, no opepper item. According to high lipid peroxides change reduced high after seasoned cold storage stage in Korea traditional Bulgogi Cooking and thought high that action of antioxidative lipid peroxides wine and a pear in flavour.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2008년 추계학술발표대회 논문집
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• pp.458-463
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• 2008

This study focused on the suggestion that is improved alternation with relation to construction item & assurance term in order to deal with the assurance conflict efficiently which have been happened in the apartment housing. To correspond to this purpose of research, as a first step, we introduced the add item & sub item of construction work on the basis upon construction specifications of the number of 17 on housing law as a alternation of the defects assurance construction item that is necessary to correct as soon as possible. As a second step of the research, we did cross analysis & compare the result of defects happened to the apartment housing complex of 293 with the defect' rate of construction work excepted from the supervisory item, and main performance estimation items in the HPGS(House Performance Grading System), and analysis results introduced from question survey. As the result of this research work, we became to reflect the improving schemes on the housing Law the year of 2007.

• 한국치위생학회지
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• 제16권2호
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• pp.329-335
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• 2016

Objectives: The objective of study is to investigate the influence of service and value quality satisfaction on revisit intention in orthodontic patients. Methods: A self-reported questionnaire was filled out by 230 orthodontic patients in Seoul, Daejeon, and Cheongju from July 1 to August 30, 2015. The contents of questionnaire included the general characteristics(6 item), quality of dental service(22 item), value(4 item), revisit intention(3 item), and satisfaction(3 item). The research tools were modified and supplemented by Han using Likert 5 points scale. Data were analyzed using SPSS 19.0 program. Results: Quality of dental service was 3.88 points, value of dental service was 3.78 points, revisit intention was 4.06 points and satisfaction of dental service was 4.02 points. Conclusions: The quality of dental service was lower score than other scales. This results showed that it is necessary to increase the satisfaction in service quality in the orthodontic patients.

• 아동학회지
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• 제37권6호
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• pp.35-56
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• 2016

Objective: This study aimed to develop and validate the Childcare Adaptation Scale for Infants and Toddlers (CASIT), which is rated by teachers of Korean children. Methods: The participants consisted of 326 childcare teachers working with infants (ages 0-2 years). Content validity, discriminant validity, convergent validity, concurrent validity, internal consistency, inter-rater reliability, and item discrimination were examined using PASW 18.0 and AMOS 19.0. Results: The results of an exploratory factor analysis identified the 29-item scale and six dimensions of the scale, including group life adaptation, negative behaviors, positive affect, regular routines, activity/interest, and peer interaction. Convergent validity was examined via confirmatory factor analysis, average variation extracted (AVE), and construct reliability, and acceptable evidences of convergent validity was established. The scales were shown to be highly consistent internally and among raters. Also, the mean between the upper group and lower group of each item regarding item discrimination showed a significant difference. Conclusion: It was concluded that the CASIT, which is a quick and convenient tool for teachers to use, is a valid and reliable instrument.

• Industrial Engineering and Management Systems
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• 제12권3호
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• pp.172-180
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• 2013

We herein consider a stochastic multi-item inventory management problem in which a warehouse sells multiple items with stochastic demand and periodic replenishment from a supplier. Inventory management requires the timing and amounts of orders to be determined. For inventory replenishment, trucks of finite capacity are available. Most inventory management models consider either a single item or assume that multiple items are ordered independently, and whether there is sufficient space in trucks. The order cost is commonly calculated based on the number of carriers and the usage fees of carriers. In this situation, we can reduce future shipments by supplementing items to an order, even if the item is not scheduled to be ordered. On the other hand, we can reduce the average number of items in storage by reducing the order volume and at the risk of running out of stock. The primary variables of interest in the present research are the average number of items in storage, the stock-out volume, and the number of carriers used. We formulate this problem as a multi-objective optimization problem. In a numerical experiment based on actual shipment data, we consider the item shipping characteristics and simulate the warehouse replenishing items coordinately. The results of the simulation indicate that applying a conventional ordering policy individually will not provide effective inventory management.