• Communications of Mathematical Education
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• v.21 no.2 s.30
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• pp.153-176
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• 2007

The purpose of this paper is to analyze teaching-learning program which can be applied to mathematically gifted students in primary school, Our program is based on constructivist views on teaching and learning of mathematics. Mainly, we study the algorithmic thinking of mathematically gifted students in primary school in connection with the network problems; Eulerian graph problem, the minimum connector problem, and the shortest path problem, The above 3-subjects are not familiar with primary school mathematics, so that we adapt teaching-learning model based on the social constructivism. To achieve the purpose of this study, seventeen students in primary school participated in the study, and video type(observation) and student's mathematical note were used for collecting data while the students studied. The results of our study were summarized as follows: First, network problems based on teaching-learning model of constructivist views help students learn the algorithmic thinking. Second, the teaching-learning model based on constructivist views gives an opportunity of various mathematical thinking experience. Finally, the teaching-learning model based on constructivist views needs more the ability of teacher's research and the time of teaching for students than an ordinary teaching-learning model.

• The Journal of Society for e-Business Studies
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• v.10 no.4
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• pp.83-100
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• 2005

In this paper, we investigate the concept of cyber identity built in cyberspace and analyze the effects of general perception toward cyber identity on loyalty and purchase intent. Cyber identity is classified into two types: personal and social cyber identity, and has five components. Avatars and online gaming capability make up personal cyber identity while online communities and instant messenger count as social cyber identity. We regard blog personalities as having both personal and social characteristics. In our survey, we conclude that internet users want to purchase cyber items such as avatars, online game items, and wallpaper pictures to enhance their cyber identities. Based on the survey results , we derive five factors comprising personal cyber identity and social cyber identity using factor analysis and analyze overall effects of cyber identity on loyalty and purchase intention using Structural Equation Model.

• Journal of Korean Library and Information Science Society
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• v.46 no.4
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• pp.207-226
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• 2015

FRBR and FRAD model, ICP, RDA, NCR Revision are analyzed for the composition of KCR4 Revision. Based on the results, follows are suggested. 1) Entities are divided into work, expression, manifestation, item, person, family, corporate body, concept, object, event, place. 2) Entire cataloging rules are grouped into 'attributes' and 'relationships', and then 'attributes' is divided into attributes describing and access points constructing. 3) Attributes describing is divided into attributes describing of works, expressions, manifestations, items, persons, families, corporate bodies, and arranged as the sequence. 4) Access points constructing is divided into access points constructing of works, expressions, persons, families, corporate bodies, and arranged as the sequence. 5) 'Relationships' is divided into other relationships between group 1 entities, and relationships between persons, families and corporate bodies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.5
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• pp.200-212
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• 2019

The purpose of this study is to examine the motivational factors of university graduates participating in 'Youth Technology Transfer Specialist Training Project(Youth TLO)' by applying Vroom's expectancy theory. Moreover, it is verified that the effect of actual participation behavior and individual performance improvement for the university graduates in Gyeonggi-do, Busan regions. The motivation factors were consisted of valence, instrumentality, and expectancy. An empirical analysis was conducted of the effects on the verification of the demographic characteristics of the target, the behaviour of personal business participation in the Valence and Force model, and the improvement of performance. Three results were inferred from 322 collected data as follows; First, comparative analysis about expectancy, which related to work experience, according to demographic characteristics such as gender, residence, age, and employment period revealed no significant differences in mean value, except career duration. Especially, the university graduates in 'Youth TLO' who had internship experience had the highest level of recognition for the expectancy. Second, both of valence and force model had influence on participation behavior and performance improvement. Notably, determination of coefficient for the valence model were higher than those for the force model. Third, level of mediation effects for the valence model were higher than those for the force model in respect of direct, indirect, and the total. Moreover, it was verified that the three motivation factors could improve individual performance and participation behavior had partial mediation effect.

• Spatial Information Research
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• v.13 no.3 s.34
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• pp.221-237
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• 2005

This study attempts at building a GIS computing environment that incorporates object-relational spatio-temporal database for the time geography model with space-time path, space-time prism and space-time accessibility. The proposed computing environment is composed of ( i ) mobile GIS application for collecting spatio-temporal trajectory data of an individual, ( ii ) spatio-temporal database server that includes time geography model, and (iii) geovisualization client that performs time geographic queries to the spatio-temporal database. The spatio-temporal trajectory data collected by GPS-PDA client is automatically processed and sent to server through data management middleware. The spatio-temporal database implemented by extending a generic DBMS provides spatio-temporal objects, functions, and SQL. The geovisualization client illustrates 3D visual results of the queries about space-time path, space-time prism, and space-time accessibility. This study confirms the possibility of integrating mobile GIS and DBMS for time geography model, and it presents the appropriate database model with spatio-temporal objects and functions that may handle very large data for time geography application.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.712-715
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• 2010

사회적 기업에 관한 선행연구 중 Dorado(2006)는 사회적 기업이 구성원개인의 파트너십이나 네트워크를 통하여 조직의 목표를 성취한다고 주장한 바 있다. 그리고 Social Firms UK(2007)가 발표한 Values-Based Checklist에서는 사회적기업의 경우 조직의 성취목표가 기업생존에서 고용성장을 거쳐 권한위임단계로 발전해 간다고 주장했다. 본 연구는 사회적 기업의 네트워크 구조와 네트워크 관계가 과연 국내 사회적 기업의 발전단계에 미치는 영향을 구조방정식을 통하여 살펴보고자 한다. 본 연구의 조사대상은 전문가의 추천받아 서울, 경기, 부산, 경남 등지의 사회적 기업을 직접 방문하여 사례 연구를 위한 인터뷰를 실시하였다. 뿐만 아니라 실증연구를 위해 400장의 설문지를 배부하여, 그 중 유효한 215장을 사용하였다. 본 연구의 결과는 다음과 같다. 첫째, Bruderl & Preisedorfer(1998)의 모형보다 Haugh( 2007) 모형이 한국의 일자리제공 형 사회적 기업에 적합하다는 것을 검증하였고, 둘째, 구성원의 다양한 네트워크구조는 기업생존과 고용성장에 유의한 영향을 주며, 셋째, 구성원의 강한 네트워크 관계는 고용성장과 매출성장에 유의한 영향을 준다. 넷째, 사회적 기업의 생존은 네트워크구조와 매출성장에 완전매개효과를 나타내며, 다섯째, 사회적 기업의 생존은 네트워크구조와 고용성장에 부분매개효과를 나타낸다. 이상의 연구결과를 통해 다음과 같은 시사점을 얻을 수 있다. 사회적 기업의 구성원의 다양한 외부 네트워크는 사회적 기업의 생존에 도움을 주며, 이러한 사회적 기업의 생존은 외부인들에게 더욱 더 강한 신뢰와 친밀감을 주어 사회적 기업으로 하여금 고용과 매출성장을 동시에 추구는 DBL기업으로 발전시켜 나간다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.19 no.4
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• pp.63-75
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• 2009

Recently personal information security breaches by unauthorised access, mistakenly disclosure or stolen become more frequent and the scale of the economic loss of such incidents is growing. Assessing economic loss of personal information security breaches is needed for decision making of information security investment This paper presents a framework to analyze economic impact of personal information security breaches and develops formula for each element to empirically calculate the economic loss. We also compared annual economic loss of Korea with that of Japan to develop some implications.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2004.05a
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• pp.726-729
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• 2004

본 논문은 최근 실시간 기업(RTE: Real-Time Enterprise)의 구현도구로 각광을 받고 있는 BPM(Business Process Management)을 위한 새로운 모니터링 기법을 소개한다. 본 논문의 방법론은 기존의 프로세스 모니터링 서비스의 한계를 극복하고 개인에 따라 차별화된 모니터링 환경을 제공한다. 제시된 모형은 모니터링 객체(monitoring objects), 분석기법(analysis methods), 표현 양식(presentation styles), 모니터링 이벤트(audit events)의 네 가지 축에 따라 모니터링 구성 요소들을 분해하고, 분해된 개별 단위들을 사용자가 자유롭게 조합하여 모니터링 서비스를 구성할 수 있도록 한다. 이는 기업의 경영자가 실시간으로 경영성과를 확인하도록 하고 추후의 경영활동에 반영하도록 하는 실시간 기업의 환경을 구축하도록 한다.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.1037-1041
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• 2006

본 연구에서는 수질자료에 내재되어 있는 주기성 및 경향성 등을 파악하기 위해 웨이블렛 변환을 적용하였으며 비선형 시계열자료에 대한 예측력이 우수한 인공신경망을 적용하여 예측모형을 개발하였다. 대상자료는 섬진강 유역의 주암호 수질자동측정망 지점에서 측정되고 있는 수질자료 중 2002년 1월 1일 ${\sim}$ 2004년 12월 31일까지의 일 TOC 수질자료를 이용하였다. 웨이블렛 변환을 위해 사용한 기저함수로는 Daubechies의 10번 웨이블렛 함수('db10')를 사용하였으며, 각 스케일링 및 웨이블렛 함수를 이용하여 5단계까지 변환하였다. 최종 변환된 근사성분과 D5, D4, D3, D2의 상세성분 자료를 이용하여 1시간후 TOC 예측 모형을 구성하였으며 그 결과 은닉층의 노드의 수가 17개인 모형인 Model_5_17 모형이 가장 우수한 예측력을 보였다.

• 대한공업교육학회지
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• v.36 no.2
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• pp.1-23
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• 2011

The purpose of the study was to investigate the generality and applicability of Team-Based Learning model in a technical high school, based on the interviews with students and a teacher. Team-Based Learning model seems to be an effective way in improving the performance of groups as well as the individualized learning and team interaction. We applied a formative research method and identified the strengths of the model including learners' motivation and interests, learner-centered learning, self-efficacy through learning in advance, and concept acquisition from the repetitive learning process. However, we also found the weakness of the model including impracticality of instructional design, a lack of field-oriented problem banks, and needs for identifying learner characteristics and role in instruction. Finally, we analyzed the implications for the Team-Based Learning in the technical high schools in light of team formation, discussion types, active participation, and learners' prior knowledge and attitude, and pre-determined instructional design.