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Perceptions on Science Laboratory Classroom Environments and Attitudes toward Science and Science Courses of Secondary Students (중.고등학생의 과학실험실 환경에 대한 인식과 과학 및 과학 교과에 대한 태도)

  • Kim, Heui-Baik;Kim, Do-Wook
    • Journal of The Korean Association For Science Education
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    • v.16 no.2
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    • pp.210-216
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    • 1996
  • Assessment of science laboratory environment was conducted with 539 students at middle and high school. Science Laboratory Environment Inventory(SLEI) was used as an instrument. The major findings of this study are as follows. 1. Mean scores obtained on each scale in the actual and preferred version of SLEI were relatively low, particularly on the scale of open-endedness, integration, and material environment. 2. Mean scores obtained on each scale in the actual version were lower than those in the preferred version. Score differences between actual version and preferred one were found to be significant statistically. 3. Boys and high school students perceived their laboratory environment with more open-endedness and less rule clarity than girls and middle school students respectively. 4. Girls preferred student cohesiveness at their laboratory more than boys. Highschool students wanted open-ended environment more than middleschool students. 5. Each scale of SLEI showed significant correlation with the scores of attitudes toward science. Particularly open-endedness was found to account for a significant contribution to the affective outcomes.

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An Operation History Model for Version Management of Software Objects (소프트웨어 객체의 버전 관리를 위한 연산 히스토리 모델)

  • Rho, Jungkyu
    • The Journal of Korean Association of Computer Education
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    • v.7 no.1
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    • pp.27-35
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    • 2004
  • Software documents consist of a number of objects and relationships between them, and structure of documents can be changed frequently. In the existing software version management models, changes in one object may be propagated to other objects unnecessarily. In this paper, we propose an efficient version management model for software objects based on history of operations applied to software objects. Operations applied to objects are recorded in the operation history, and those are used to retrieve versions of a document. Because versions of objects are stored and retrieved using the operation delta, it is not required to compare versions of a document to extract delta during check-in process. In addition, it can manage changes of structure of objects efficiently because it supports not only object creation, deletion, and update operation but also object move operation.

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p-Version Nonlinear Finite Element Analysis of RC Slabs Strengthened with Externally Bonded CFRP Sheets (탄소섬유보강 플라스틱시트로 외부보강된 RC 슬래브의 p-Version 비선형 유한요소 해석)

  • Cho, Jin-Goo;Park, Jin-Hwan
    • Journal of The Korean Society of Agricultural Engineers
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    • v.48 no.1
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    • pp.61-68
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    • 2006
  • The p-version nonlinear finite element model has been developed to analyze the nonlinear behavior of simply supported RC slabs strengthened with carbon fiber reinforced plastic sheets. The shape function is adopted with integral of Legendre polynomials. The compression model of concrete is based on the Kupfer's yield criterion, hardening rule, and crushing condition. The cracking behavior is modeled by a smeared crack model. In this study, the fixed crack approach is adopted as being geometrically fixed in direction once generated. Each steel layer has a uniaxial behavior resisting only the axial force in the bar direction. Identical behavior is assumed fur tension and compression of steel according to the elastic modulus. The carbon fiber reinforced plastic sheets are considered as reinforced layers of equivalent thickness with uniaxial strength and rigidity properties in the present model. It is shown that the proposed model is able to adequately predicte the displacement and ultimate load of nonlinear simply supported RC slabs by a patch with respect to reinforcement ratio, thickness and angles of CFRP sheets.

Validity and Reliability of the Turkish Version of the COVID Stress Scale

  • Demirgoz Bal, Meltem;Dissiz, Melike;Bayri Bingol, Fadime
    • Journal of Korean Academy of Nursing
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    • v.51 no.5
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    • pp.525-536
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    • 2021
  • Purpose: The aim of this study was to assess the Turkish adaptation of the COVID Stress Scale (CSS) on the basis of determining the stress caused by the coronavirus disease (COVID-19) pandemic, and to test its validity and reliability. Methods: The English CSS was translated into Turkish using forward and backward translation. Data were collected online from 360 participants. Construct validity was evaluated using confirmatory factor analysis, exploratory factor analysis, and content validity. Pearson product-moment correlation, Cronbach's alpha reliability coefficient, and test-retest methods were used to evaluate reliability. Results: The Turkish version of the CSS has 36 items consistent with the original scale and has five factors: COVID danger and contamination, socioeconomic consequences of COVID, COVID xenophobia, traumatic stress due to COVID, and compulsive checking for COVID. The construct validity of the Turkish version of the CSS was verified by the adjusted goodness of fit index > .85, and comparative fit index > .95. The content validity index of each item was 91%. The corrected item-total correlations of the scale ranged from .51 to .89. Internal consistency was reliable, with a Cronbach's α of .93. Conclusion: The Turkish version of the CSS is valid and reliable. It can be used as a measurement tool for the assessment of COVID-related stress.

A Brief Screening Tool for PTSD: Validation of the Korean Version of the Primary Care PTSD Screen for DSM-5 (K-PC-PTSD-5)

  • Jung, Young-Eun;Kim, Daeho;Kim, Won-Hyoung;Roh, Daeyoung;Chae, Jeong-Ho;Park, Joo Eon
    • Journal of Korean Medical Science
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    • v.33 no.52
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    • pp.338.1-338.5
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    • 2018
  • The purpose of this study was to develop and evaluate psychometrically the Korean version of the Primary Care Posttraumatic Stress Disorder Screen for the Diagnostic and Statistical Manual-fifth edition (K-PC-PTSD-5). In total, 252 participants were interviewed with the Structured Clinical Interview for Diagnostic and Statistical Manual-fifth edition-research version (SCID-5-RV). The K-PC-PTSD-5 showed good internal consistency (${\alpha}=0.872$), test-retest reliability (r = 0.89), and concurrent validity (r = 0.81). A score of 3 was identified as the threshold for clinically significant posttraumatic stress disorder (PTSD) symptoms. Overall, the results indicate that the K-PC-PTSD-5 is a useful, timesaving instrument for screening PTSD symptoms.

Scaling of the Korean Version of the GMFM

  • Park, So-Yeon;Yi, Chung-Hwi
    • Physical Therapy Korea
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    • v.12 no.4
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    • pp.20-25
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    • 2005
  • The Gross Motor Function Measure (GMFM) is an internationally widely used outcome measure. The aim of this study was to evaluate the structural properties of the Korean version of GMFM using the Rasch Model, with regard to scoring within rehabilitation centers in Korea. GMFM data for 206 children with cerebral palsy were collected from 11 outpatient rehabilitation facilities by 29 pediatric therapists. The Winsteps software was used to refine the rating scale. This study suggests that the scoring categories of the Korean version of the GMFM should be collapsed from 0 (subject does not initiate task), 1 (subject initiates task), 2 (subject partially completes task), 3 (subject completes task) to 0 (subject does not initiate task), 1 (subject initiates or partially completes task), 2 (subject completes task) for better accuracy in estimating the gross motor function of children with cerebral palsy.

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Development of 7 Learning Style Inventory Korean Version for IT Major Students

  • Park, Jong-Jin
    • International Journal of Advanced Culture Technology
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    • v.8 no.2
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    • pp.42-47
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    • 2020
  • This study is to develop Korean version of the 7 Learning Style Inventory(LSI) for IT major Students by systematic translation process and to test learning style of IT major University students. Translated and developed Korean version of LSI was verified of validity by comparing with existing V.A.K. learning style model. We can develop various tactics for 7 learning styles of students. Once the learning style of each student is confirmed, customized teaching for individual and team can be done more efficiently through teaching and learning strategies according to each learning style. Developed LSI was applied to the IT major students of two classes from Chungwoon University in Incheon. Results of LSI survey show that learning styles of 24 students out of 35 students from two classes are matched with V.A.K. learning styles of same students. It was 68.6% match in learning style, and shows that validity of 7 LSI. We need to elaborate Korean questionnaires of the LSI more, and extend and apply to the non-IT major students group.

A Preliminary Study on Validity of Korean Behavior Rating Inventory of Executive Function-Preschool Version(BRIEF-P) (한국판 유아용 실행기능 척도(BRIEF-P)의 타당화를 위한 예비연구)

  • KOWN, Yeon-Hee
    • Journal of Fisheries and Marine Sciences Education
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    • v.29 no.2
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    • pp.436-446
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    • 2017
  • This study was performed to verify the validity and utility of the Korean Behavior Rating Inventory of Executive Function-Preschool Version(BRIEF-P). The BRIEF-P is one of the most used instruments to measure Executive Function(EF) and a teacher-rating assessment method designed to measure the executive function of preschoolers(age 2-5). A total of 200 preschoolers(104 boys, 96 girls; recruited aged 3 to 5years) participated. Confirmatory factor analysis was carried out to evaluate the model structure. Correlation analysis was done to verify the concurrent validity. In the results, the model fit indexes were good with the five BRIEF-P subscales (that is, inhibit, shift, emotional control, working memory, plan/organize). The internal consistency of the BRIEF-P five subscales were supported. As a results, the Korean Behavior Rating Inventory of Executive Function-Preschool Version(BRIEF-P) was confirmed to be a reliable and valid assessment tool to measure executive function in preschoolers.

Analysis of Deliberations by UNCITRAL Working Group on the Draft Revised Version of UNCITRAL Arbitration Rules (UNCITRAL 중재규칙(仲裁規則) 개정초안(改正草案) 내용(內容)의 분석(分析)과 방향검토(方向檢討))

  • Kang, Pyoung-Keun
    • Journal of Arbitration Studies
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    • v.18 no.2
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    • pp.3-31
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    • 2008
  • At its thirty-ninth session(New York, 19 June - 7 July 2006), United Nations Commission on International Trade Law(hereinafter referred to as the Commission) agreed to give priority to the topic of revising the UNCITRAL Arbitration Rules. From the forty-fifth through the forty-seventh session, the Working Group checked various issues based on the draft revised version of the UNCITRAL Arbitration Rules prepared by the Secretariat. At its forty-eighth session, the Working Group is going to finish its first reading of articles 38 to 41 of the draft revised version of the UNCITRAL Arbitration Rules, and to commence its second reading of the draft revised version of UNCITRAL Arbitration Rules. Korea is keen on enticing foreign direct investment into its territory. From the 1960s, Korea has concluded more than 80 BITs. Korea is making efforts to conclude FTAs with its trading partners. As of January, 2008, 3 FTAs have taken into effect with respect to Korea. According to provisions on dispute settlement found in such BITs and FTAs involving Korea, the Rules can be chosen for Investor-State Arbitration. Furthermore, the Rules is followed by the arbitration rules for domestic and international arbitrations administered by the Korean Commercial Arbitration Board. If the Commission adopts the revised version of UNCITRAL Arbitration Rules, the Rules will be able to give impact on the arbitration law and practice around the world of arbitration. That is the reason why we should keep attention to the development of the deliberations of the Working Group.

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Study on the Development of Test for Indicators of Positive Experiences about Science (과학긍정경험 지표 검사를 위한 도구 개발 연구)

  • Shin, Youngjoon;Kwak, Youngsun;Kim, Heekyong;Lee, Soo-Young;Lee, Sunghee;Kang, Hunsik
    • Journal of The Korean Association For Science Education
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    • v.37 no.2
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    • pp.335-346
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    • 2017
  • In this study, we developed and examined the validity and reliability of the Test for Indicators of Positive Experiences about Science (TIPES) that measures students' positive experiences about science. We have developed TIPES through literature reviews, development of the preliminary version of TIPES, a pilot test and revisions of the preliminary version, and the test of the final version. Through literature reviews and Delpi methods, we developed the preliminary version of TIPES, which consists of five categories such as science academic emotion, science-related self-concept, science learning motivation, science-related career aspiration, and science-related attitude. Using the preliminary version, we conducted a pilot test with 198 students consisting of 4th, 6th, 8th, and 10th graders, and modified the first version based on the results from the pilot test and expert meetings. We then conducted a main test with the revised version of TIPES with 1,841 students consisting of 4th, 6th, 8th, and 10th graders. According to a confirmatory factor analysis, a reliability test and descriptive statistics analyses, TIPES found to have a good validity as well as reliability. In addition, there are statistically significant differences in the norm distribution and scores of TIPES by student's grade, gender, school location, and level of participation in science-related activities. Discussed in the conclusion are the implications of this research for science education research and science teaching and learning practices in the school.