• Education of Primary School Mathematics
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• v.20 no.3
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• pp.193-204
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• 2017

The purpose of the study was to investigate and develop a practical approach to integrating student-driven mathematical problems posing in mathematics instruction. A problem posing activity was performed during regular mathematics instruction. A total of 540 mathematical problems generated by students were recorded and analysed using systemic procedures and criteria. Of the problems, 81% were mathematically solvable problem and 18% were classified as error type problems. The Mathematically solvable problem were analysed and categorized according to the complexity level; 13% were of a high-level, 30% mid-level and 57% low-level. The error-type problem were classified as such within three categories: non-mathematical problem, statement or mathematically unsolvable problem. The error-type problem category was distributed variously according to the leaning theme and accomplishment level. The study has important implications in that it used systemic procedures and criteria to analyse problem generated by students and provided the way for integrating mathematical instruction and problem posing activity.

• The Journal of the Korea Contents Association
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• v.13 no.8
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• pp.229-239
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• 2013

The purpose of this study is to find out the mediation effects of social-support for adolescents' game addiction and school adaptation. For this study, 353 middle school students in the West-Gyungsangnamdo areas were included in the analysis. Setting as covariates, a mediator and extra variables significantly correlated with the criterion variable, regression analysis, SPSS Macro and bootstrapping methods were used to assess the mediation effects of social-support for adolescents' game addiction and school adaptation. The results showed that adolescents highly addicted to games tended to have more difficulty in adapting to school. However, it was found that social-support (mediator) fully mediated the influence of the adolescents' game addiction (predictor) on school adaptation (criterion variable). Based on the results of the analysis, we suggest implications for social work practice to improve how game-addicted adolescents settle down in middle school through increasing social-support - the mediator - and hence bring about a decrease in game addiction among adolescents.

• The Korean Journal of Elementary Counseling
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• v.11 no.3
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• pp.371-390
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• 2012

This study examined the reliability and validity of the Korean short version of the Big-Five Questionnaire for children, a instrument designed to measure Big-Five personality domains of elementary school students. The short Big-Five Questionnaire for children was composed of 15 items based on exploratory factor analyses on th data from 5th and 6th grade elementary school students(N=278). Confirmatory factor analyses revealed evidence of structural validity of the Korean short version BFQ-C. The correlations of K-BFQC-SF with the criteria of depression, academic achievement, career maturity were assessed to verify criterion-related validity. The correlation coefficients were correspondent to the results of previous studies. This study is meaningful in that it is sufficient to assess five factor personality domains in school settings.

• Korean Journal of Social Welfare
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• v.68 no.3
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• pp.149-180
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• 2016

The purpose of the present study was to examine the validity and reliability of the Korean version of PANSI(Positive and Negative Suicide Ideation: K-PANSI) scale which was developed to measure adolescents' suicide ideation. The study sample consisted of 552 middle school students using a questionnaire survey including the K-PANSI. A reliability analysis, a correlation analysis, and a confirmatory factor analysis were used to test internal consistency(Cronbach alpha), criterion validity (with respect to CES-D, BDI, RES, SWLS), and construct validity. Major study findings are as follows. First, Cronbach' ${\alpha}$ of the K-PANSI scale is supported to some degree by significant correlations with CES-D, BDI, RES, SWLS. Lastly, the confirmatory factor analysis of the K-PANSI scale showed that a two factor model was appropriate with 66.0 percent of explanatory power. These findings suggest that the K-PANSI scale could be used as a reliable and valid measure for adolescent' suicide ideation.

• Korean Association of Arts Management
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• no.51
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• pp.191-219
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• 2019

Adoption of applicable law for the international trade of artworks is closely related to the results of lawsuits. Recently, starting with New York, the hub of the international artworks market, a modern, mixed-law is gradually being adopted more. It is difficult to designate an applicable law of an international trade of artworks through private laws regulations of relevant countries, and the public laws regulations must also be considered in relation to individual benefits and the public benefits to the relevant countries. With regards to the foreign relations issues, Korea's private international law embraces a so-called public order theory, and according to the Section 7 of the Act on the Private International Law and its enactment history, the compulsory provision, which seems appropriate for application to the corresponding matter, applies without regards to the selection of the applicable law. The Civil Act of Korea acknowledges bona fide acquisition of a cultural asset, in principle, if the Cultural Heritage Protection Act is not applicable. Moreover, a lost artwork is also a subject of bona fide acquisition; however, if the relevant artwork is either stolen or lost, the original owner has the right to demand the return of that artwork within 2 years of being stolen or lost according to the Section 250 of the Civil Act. Also, if the buyer purchased from a distributor specializing in the artworks, such as auction, open market or gallery, the buyer could request a compensation of the purchase price from the original owner, and if the buyer purchased through a private transaction, the buyer cannot demand a compensation of the purchase price and must return the artwork.

• The Korean Journal of Applied Statistics
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• v.26 no.5
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• pp.713-723
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• 2013

An objective Bayesian estimation procedure of the two-parameter Pareto distribution is presented under the reference prior and the noninformative prior. Bayesian estimators are obtained by Gibbs sampling. The steps to generate parameters in the Gibbs sampler are from the shape parameter of the gamma distribution and then the scale parameter by the adaptive rejection sampling algorism. A numerical study shows that the proposed objective Bayesian estimation outperforms other estimations in simulated bias and mean squared error.

• Journal of Korea Game Society
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• v.1 no.1
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• pp.80-87
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• 2001

Overseas literatures on the subject discussed so far have used the samples of tangible products and domestic studies have not limited the ranges of respondents while discussing the characteristics of the products. In the meanwhile, this paper has chosen intangible IT products as its research subject because IT area is an emerging industry in the 21st century. In addition, it has also limited the research samples to the buyers of the game software package products in order to enhance the reliability of respondency and the involvement. The results can be summarized as follows : Firstly, involvement acts as a moderator in the fair price and value of product as well as willingness to buy. Secondly, involvement acts as a moderator in the highest price and value of product as well as willingness to buy. Finally, involvement acts a moderator in the lower price and value of product.

• 한국IT서비스학회:학술대회논문집
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• 2010.05a
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• pp.310-316
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• 2010

본 연구는 정보기술의 사용(Usage)과 수용(Adoption)을 예상하는 목적보다는 웹 기반 협동합습 시스템사용 의도와 사용행위에 영향을 미치는 변수들을 폭 넓게 이해하고, 실질적으로 활용 할 수 있는 변수를 찾는데 목적이 있기 때문에 분해된 계획 행동 이론(Decomposed TPB)을 기반 하였고, 분해된 변수들 중 일부분(지각된 유용성, 지각된 용이성, 명시적 영향, 암시적 영향)과 웹 환경의 중요 요소인 '흥미성' 을 포함하여 사용의도(Use Intention)에 영향을 미치는 변수들을 2개 대학의 대학생 256명을 대상으로 자료를 수집하여 실증 분석하였다. 연구결과 다차원으로 분해된 일부 변수들 중 태도적 믿음 변수인 '지각된 용이성'을 제외하고 분해된 모든 변수가 사용의도에 긍정적 강한 영향을 미치고 있음을 알 수 있었고, 특히 주관적 규범(명시적 영향, 암시적 영향)변수는 준거집단을 통해서 웹기반 협동학습 시스템에 대한 행동의도나 인지에 영향을 줄 수 있는 중요 변수로 나타났다. 이러한 결과는 준거인이 되는 팀장은 팀원 및 학습자들과의 상호작용(협동학습을 통한 화상토론, 게시판정활동, 오프라인 정기 모임, 동영상 동시 시청)과 팀원 관리 및 운영하는 역할이기 때문에 새로운 정보 기술 및 시스템 사용 권유를 하거나, 직접 기술사용을 하는 주변 분위기는 협동합습에 참여한 학습자들에게 조금이나마 영향을 줄 수 있음을 추측 해 볼 수 있고 영향력 있는 중요변수임을 제시하였다.

• Korea Trade Review
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• v.42 no.2
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• pp.29-52
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• 2017

This research employed a comparative legal analysis to explore the rules of CISG, Incoterms 2010, Chinese Contract Law, and Korean Civil Act with precedent researches and present customs in the international sale of goods. The results of this study show that there are some differences in the provisions of seller's delivery obligation to those regulations, such as the time and place of delivery goods, the conformity of goods on the contract, and delivery of documents. Therefore, the parties of contract, especially between Korean and Chinese traders, must be aware of the differences in the provisions of those selected regulations in order to reduce disputes between them, out of or in relation to or in connection with their sales contract.

• The Journal of the Korea Contents Association
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• v.9 no.12
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• pp.923-931
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• 2009

The purpose of this study is to testify construct validity of Self-directed Learning Perception Inventory for middle school students(Lee, 2008). For the purpose, First, test was done with 1202 middle students sampled from nationwide. As a result of confirmatory factor analysis using structural equation model, we confirmed 7 factor model was generally appropriate and acceptable. Second, in order to test criterion-related validity, test was done with 530 middle school students sampled form Seoul, Gyeonggido, Chungchongdo. The inventory has criterion-related validity enough to be a tool for measurement. Reliability of this inventory was .94 and retest reliability was .91. The limitation of this and suggestion for future research were discussed.