• 한국지구과학회:학술대회논문집
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• 2005.09a
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• pp.231-244
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• 2005

이 연구는 고등학교 지구과학 탐구활동에서 소그룹활동을 학생들의 대화를 중심으로 분석하고, 반성적 탐구활동이 교육과정별로 어떤 차이를 보이고 소그룹내의 상호작용특성에 따라 반성적 탐구양식의 차이가 어떠한지 알아보는 것이다. 그럼으로써 학생들이 어떤 반성적 탐구양식을 보이며 어떻게 발달시키는지에 관한 이해를 제공하고, 수업속의 맥락은 이러한 반성적 탐구학습을 증진시키고 억압하기위해서 어떻게 상호작용 하는지를 알아보고자 하였다. 이에 대한 연구문제로 소그룹을 이용한 탐구활동 수업과 반성적 탐구활동수업 중 반성적 에피소드의 차이가 있는가, 소그룹내의 그룹상호작용의 특징에 따른 반성적 탐구유형의 차이는 있는가를 설정하였다. 이를 위해 고등학교 1학년 2개 학급을 선정 기존의 우리나라 교육과정에 의거한 탐구활동수업 4차시, 반성적 탐구교육과정 수업 4차시를 각각 실시하고 수업을 녹화 전사해서 언어행동 분석틀과 반성적 탐구의 3가지 맥락을 통해 분석하였다. 연구 결과 두 교육과정 모두 도입에서 두 교육과정 모두 A-AD맥락의 반성적 탐구가 전형적으로 자주 나타나며, 반성적 탐구 교육과정수업에서는 AD-SR가 주로 나오는 것으로 보아 과제활동초기에 역할 분담과 과제 활동의 전략을 세우며, 전략을 세울 때 영역개념을 이용하는 것을 안수 있었다. 우리나라 교육과정 수업에서는 반성적 탐구진술이 간단하고 계획과정이 짧으며, 주로 과제 맥락 내에서 반성적 탐구를 하는 것으로 나타났다. 전개부분에서는 두 교육과정모두 DI-DP, DI-A맥락의 반성적 탐구가 나타나 자료 항목과 자료 패턴 그리고 인공물과 관련시키는 반성적 탐구가 공통적으로 나타나며 반성적 교육과정수업에서는 대체로 자료 맥락의 영역개념과 과제 맥락을 연결시키는 반성적 탐구가 잘 나타나고 있다. 반면 우리나라 교육과정에서 주로 과제 맥락 내에서 반성적 탐구가 나타났다. 정리단계에서는 반성적 교육과정 수업에서는 DC-DP가 주로 나타났으며 우리나라 교육과정수업에서는 DC-DP DP-AD맥락의 반성적 탐구가 나타났다. 정리활동에서 우리나라 교육과정은 반성적 교육과정보다 자료 맥락의 영역개념을 더 자주 이용하고 다양한 맥락의 반성적 탐구가 나오고 있으며, 이는 우리나라 교육과정의 학습지의 활동이나 문제는 학생들에게 익숙하고, 자료 패턴을 가지고 행동결정으로 연결짓는 활동이 명확히 제시되었기 때문이라고 판단된다. 두 그룹의 상호작용 특징에 따른 반성적 탐구의 성향의 차이는 도입단계에서 그룹의 특징과 상관없이 A-AD, AD-SR맥락의 반성적 탐구가 나왔으며 전개와 정리단계에서는 N그룹에서는 DP와 관련된 의미 있는 반성적 탐구가 나오는 반면 M그룹에서는 이러한 맥락의 반성적 탐구는 아주 드물게 나타나며, GN과 관련된 행동결정이 자주 보이고 있었다. 정리활동시 주로 하는 기록 활동에서 N그룹에서는 다양한 맥락에서 반성적 탐구를 하고 있는 것에 비해 비교 그룹에서는 서로 견제하고 확인하는 상호작용의 특징에서 나타나는 AD-SR맥락의 반성적 탐구가 자주 나타났다. 반성적 탐구 척도 두 그룹을 비교 했을 때 CON 상호작용의 특징이 낮게 나타나는 N그룹이 양적으로 그리고 내용적으로 더 의미 있는 반성적 탐구를 했다

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1275-1278
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• 2010

1984년 A.Shamir에 의해 처음 소개된 ID 기반 공개키 암호시스템은 ID나 메일, 주소, 소속 등 유일하게 특정할 수 있는 것을 사용자의 공개키로 사용함으로써 송신자의 공개키에 대한 정당성 확인 과정을 필요 없게 하는 방식으로 전자서명에 적용되어 다양한 방식으로 제안되었다. 하지만 ID 기반 그룹 서명에서는 그룹 관리자만이 사용자의 서명키를 생성하기 때문에 그룹 내 사용자로 위장이 가능한 문제점을 가지고 있다. 본 논문에서는 ID기반 서명에서의 문제점인 키 위탁 문제를 해결할 수 있고, 그룹 관리자만이 부담하고 있는 그룹 구성원들의 개인 서명키 생성 및 사용자 식별 연산을 소그룹 관리자를 이용하여 연산량을 분산시킬 수 있는 그룹 서명 방식을 제안한다.

• Journal of Life Science
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• v.29 no.8
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• pp.837-845
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• 2019

The purpose of this study was to analyze the effects of aerobic exercise and resveratrol supplementation on mitochondrial biogenesis in skeletal muscle of high-fat diet-induced obese mice. In this study, 4-wk-old C57BL/6 male mice were divided into four groups, with 10 animals in each group: a normal diet group (NC), high-fat diet group (HC), high-fat diet group with resveratrol supplementation (HRe), and high-fat diet GROUP with exercise (HE). Aerobic exercise was performed on a treadmill for 40~60 min/d at 10~14 m/min, 0% grade, 4 d/wk for 16 wk. Resveratrol (25 mg/kg bodyweight) was administrated once a day, 4 d/wk for 16 wk. There was a significance difference in COX-IV mRNA expression in the NC group versus that in the HC group (p<0.05). The expression of the SIRT-3, PGC-1a, and COX-IV mRNA genes in the HE group increased significantly as compared with the expression of these genes in the HC and HRe groups (p<0.05). These results indicated that high- fat diet-induced obesity did not affect mitochondria biogenesis gene expression in skeletal muscle. In contrast, aerobic exercise training increased the expression of mitochondria biogenesis gene expression in skeletal muscle in high-fat diet-induced obese mice. These findings suggested that aerobic exercise but not resveratrol supplementation had a positive effect on mitochondrial biogenesis in skeletal muscle in high-fat diet-induced obese mice.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04d
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• pp.545-547
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• 2003

본 논문에서는 고 가용성 및 신뢰성을 보장하는 클러스터드 EJB(Enterprise Java Beans)서버 환경에서 동일한 그룹에 속해 있는 분산된 모든 EJB서버들이 배포되는 어플리케이션들에 대해 동일한 이미지를 갖도록 하여 서비스하고자 할 때 사용자가 작성한 어플리케이션들을 동일한 그룹의 EJB서버들에 전송, 배포하고 유지하는 방법에 관한 것이다. 이러한 방법으로써 본 논문에서는 동일한 그룹에 속해 있는 모든 EJB서버들이 하나의 저장소를 사용하도록 함으로써 하나의 어플리케이션 이미지로 다중 배포할 수 있는 방법에 대해 논의한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.2
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• pp.521-533
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• 2010

The OSGi framework is a java-based service platform that can be remotely managed, providing an application life cycle management model, a service registry and an execution environment. Based on the framework, various OSGi layers, APIs, and services have been defined. A bundle is an application that can be executed in the OSGi framework, deployed through a bundle repository. Usually, bundles in the repository are accessible via a designated web page. Unfortunately, the current bundle repositories do not provide any kind of group access services and dynamic bundle installation and deployment. In this paper, we describe a WebDAV-Based OSGi bundle repository named WOBR, which supports effective group-based accesses. WOBR is composed of a WOBR bundle repository, a management bundle and an access bundle that interact with the bundle repository. The management bundle is for configuration of the WOBR bundle repository, managing group access facility to the repository. The access bundle provides access to the repository and search mechanism for the bundles. Additionally, it provides the life cycle management of the installed bundles on the local environment.

• The Journal of Korean Institute for Practical Engineering Education
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• v.3 no.1
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• pp.40-44
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• 2011

In the engineering education, the difference of student's achievements is one of the problems to make teaching more difficult. To solve this problem, cooperative learning can be adopted to make students study automatically and cooperatively in the small study group. However, it is not easy to achieve substantial cooperation in the study group. In this paper, we propose a method to achieve substantial cooperative learning in the engineering subject requiring mathematical practice. we can vitalize the cooperative learning and improve the student's achievements by using the both of individual and group assessment.

• Journal of the Korean Society of Food Science and Nutrition
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• v.45 no.4
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• pp.585-592
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• 2016

This study was conducted to analyze the gap between importance and satisfaction of university foodservice attributes as well as to assess customer satisfaction with university foodservice establishments. All statistical analyses were conducted using the SPSS package program (ver. 20.0) for t-test, ANOVA, and Importance-Performance Analysis (IPA). A total of 619 valid responses were used for the data analysis. The results of this study are as follows: the composition of respondents was 53.5% males and 46.5% females. Exactly 85.5% of respondents ate lunch at least five times a week at the on-campus foodservice. The favorite lunch menus of Chinese university students were Chinese food (91.8%), followed by Western food (3.5%), Korean food (2.2%), and Japanese food (1.5%). According to the results of IPA, foodservice selection attributes that were priorities for improvement were food taste, food freshness, menu variety, waiting time for meal, and toilet cleanliness. In addition, five satisfaction factors were extracted by exploratory factor analysis. According to the results of one-way ANOVA, 'physical environment' and 'service quality' factors showed significant differences according to the students' grades and the frequency of eating lunch at on-campus foodservice. On the other hand, 'food quality and menu' and 'convenience and price' factors showed significant differences according to meal cost. In conclusion, in order to enhance customer satisfaction of on-campus foodservice, foodservice managers should offer a varied menu at reasonable prices and improve food quality.

• The Journal of Korean Academy of Sensory Integration
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• v.7 no.2
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• pp.1-12
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• 2009

Objective : The purpose of this study is to find out whether group approach of sensory integration (SI) enhances sensory processing, fine motor function, and social skill for the children with sensory integration disorders. Method : Three children with problems related in sensory integration had got received 21 intervention sessions. We evaluated children with sensory profile(SP), social maturity test, Korean-developmental test of visual perception(K-DTVP), Bruininks-Oseretsky Test of Motor Proficiency(BOTMP) before-and after intervention. The statistical significance of data is tested by the Wilcoxon matched-pair signed rank test. Results : All data of post-intervention did not show any statistically significant differences; SP, social maturity test, K-DTVP, BOTMP. Conclusions : This study is to verify the effect of group SI intervention on sensory processing, fine motor function, and social skill for children with sensory integration disabilities. The results were not statistically significant. However, the average score after SI intervention has been improved in the section of fine motor and social skill comparing to that of pre-intervention period. It would have positive impact for children with sensory integration disabilities. It is needed to study with the larger number of target children and more often treatment session are suggested. The confounding variables also should be controlled in the further study.

• The Korean Journal of Pesticide Science
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• v.18 no.4
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• pp.364-375
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• 2014

This study was carried out to investigate the pesticide efficacy and crop safety among different leafy vegetables applied with foliar spraying under greenhouse and to check extrapolating from some trial data to other minor crops. Leafy vegetables used in this study were: lettuce (Lactuca sativar), leaf broccoli (Brassica oleracea.), chicory (Cichorium intybus.), chinese cabbage (Brassica campestris subsp. napus var. pekinensis), radish (Raphanus sativus), rape (Brassica napus), crown daisy (Chrysanthemum coronarium), edible burdock (Arctium lappa), endive (Cichorium endivia) and mustard greens (Brassica jumcea). Based on the result of control efficacy, all crops were classified into the groups. The results showed the probabilities of extrapolating the control value data of minor crop within the same group. It would be possible to use the pesticides which are already been registered for similar crops to those crops have no registered pesticides.

• The Journal of Korean Academy of Sensory Integration
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• v.16 no.1
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• pp.25-34
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• 2018

Objective : This study aims to figure out the effect that sensory integration group therapy has on the fine motor, social interaction and playfulness of preschool children with intellectual disability. Methods : Participants were four children from three to five years old who were diagnosed with intellectual disabilities and they participated in twelve sessions of sensory integration group therapy, sixty minutes per session and once a week. Sensory integration group therapy was composed of parallel and peer play-centered gross motor activities, art activities and sensory plays that were related to each theme. Erhardt Developmental Prehension Assessment (EDPA), Penn Interactive Peer Play Scale (PIPPS) and Test of Playfulness (ToP) were used to evaluate participants' fine motor, social interaction and playfulness before and after the intervention. Results of fine motor, social interaction and playfulness before and after the intervention were compared using Wilcoxon matched-pair signed rank test. Results : After sensory integration group therapy intervention, the fine motor skills of participants did not show significant increases, but social interaction and playfulness showed significant increases (p< .05). Conclusion : Although sensory integration group therapy with preschool children with intellectual disability did not show positive improvement in fine motor skills, it showed positive effect on social interaction and playfulness. Group sensory integration therapy might be an intervention approach for all children with disabilities.