• 대한조선학회논문집
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• 제31권3호
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• pp.19-30
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• 1994

제품정보의 모델링은 엔지니어링 환경에서, 특히 통합하된 생산시스템의 핵심인 CAD/CAM 시스템의 개발을 위해 매우 중요한 과제가 되어가고 있다. 모델이란 실세계의 개념과 현상에 대한 정형적인 표현의 결과이며, 모델링이란 제품의 관련한 정보를 식별하고 추상화 하여 정형화 하는 작업이다. 본 연구에서는 선박의장시스템의 대표적인 배관시스템을 모델링하였다. 배관시스템 정보의 전주기 정보를 표현하기 위한 메카니즘은 STEP(Standard for the Exchange of Product Model Date)의 개념을 기초로 하였고, 시스템의 분석, 설계 및 구현을 위한 수단으로는 객체지향기술을 이용하였다. 본 연구에서 정의된 배관시스템 모델을 향후 제품모델개념의 배관 CAD/CAM 시스템 구현의 기초가 될 것이다.

• 가족자원경영과 정책
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• 제23권2호
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• pp.17-40
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• 2019

The purpose of this study is to analyze the present condition of work-leisure balance and its influencing factors in employed young single households. Three groups of sample households-work-oriented, balanced, and leisure-oriented-were compared by factors related to work and leisure. Six cases were interviewed to obtain qualitative data on the subjective meaning of work-life balance and its influencing factors. The results showed different characteristics between the three groups based on the various work- and -leisure- related factors: average weekly working hours of the week, number of vacation days per year, weekday leisure time, degree of weekday freedom, and sufficiency of the leisure cost. In addition, the characteristics considered desirable for quality of life differed between groups. Finding the meaning of life through work and leisure was very important for those respondents, who have an unstable position in the labor market, and who want to delay making decisions on moving into the marriage and family-building phase recognized as a major development task for Korean adults.

• 아태비즈니스연구
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• 제11권2호
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• pp.145-158
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• 2020

Purpose - To understand the growing interests in the professional temporary workforce, this study aimed to examine the different types of professional temporary workers and their different effects on creative performance. Design/methodology/approach - By sub-classifying professional temporary workers as boundaryless workers and transitional workers, this study developed propositions to provide comprehensive framework for directing meaningful topics for future research on professional temporary workers. Findings - This study suggested that two types of professional temporary workers may differ significantly in terms of their work efforts for getting approval or acceptance from the team members and for achieving creative contributions in teams. Specifically, drawing on expectance theory, social identity theory and resource-based theory, this study discussed the relationship between acceptance(task-oriented vs. relational-oriented acceptance), employment duration(short-term status vs. long-term status), contract security(volition being temporary worker) and creative performance for boundaryless workers versus transitional workers. Research implications or Originality - This study have implications for increasing our understanding of professional temporary workers by showing that creative performance may vary by employment types.

• Asia pacific journal of information systems
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• 제18권2호
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• pp.73-94
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• 2008

When individuals collaborated in virtual settings, communication is medicated through a variety of communication technologies, and is associated not only with communication effectiveness but also with socio-emotional interactions among group members. In this regards, scholars have examined how technology-mediated communication systems can be designed and used to facilitated communication interaction. However, the empirical results of the previous studies have revealed inconsistencies in the effects of communication media on users' behavioral or attitudinal responses, and on their viable effectiveness in organizations. Some studies claim that computer-mediated communication(CMC) is task-oriented but not suitable for emotional expression since it hinders close interpersonal interaction. On the other hand, some studies argue that individuals are able to develop interpersonal relationships more effectively in a CMC environment than in an FtF-environment. Due to the different perspectives, a theoretical gap exists, and it leads to the inconsistent research findings. The purpose of this paper is to combine the two different perspectives into single unified model, thereby providing a more realistic and comprehensive understanding about virtual collaboration. The present study here sought to answers the following questions with organizational communication perspective: What are the major components of virtual collaboration? What factors affect the performance of virtual collaboration? And what kind of managerial efforts should organization make in order to facilitate CMC media effectiveness in virtual collaboration? Although there is a certain belief that new media, namely technology-mediated communication support would create new opportunities, the problem of "how" or "why" has been an important question that is still not fully addressed. In this regards, we collectively reexamined previous literatures with major issues which are still controversial and integrated various theoretical activity within computer-mediated communication domain: task-oriented approach, socio-emotional approach, and evolutionary psychological approach. Our first contribution is to develop a framework for virtual collaboration by combining two different perspectives into a single unified model, providing a more realistic and comprehensive understanding. The second main contribution is the joint modeling of both social presence and cognitive effort, and the effects on two distinct but important communication outcomes(i.e., take performance and relational development). We tested the research hypotheses which were developed based on the various CMC theories using data gathered through a self-administered mail survey of 127 individuals of 69 virtual workgroups. The proposed model was supported, providing preliminary evidence that the tension between two opposite view should be integrated. The results show that the individual's psychological processes(social presence and cognitive effort) in a virtual environment significantly mediated the effect of CMC inputs (media richness, user adaptation, and shared contest) on the CMC outputs (task performance and relational development). Furthermore, this study shows that the lack of perceived media richness of CMC media can be complemented by user adaptation and shared context. Based on the results, we discuss how communication system should be designed and implemented so as to promote virtual interaction as well as how a virtual workgroup should be composed to complement the lack of media richness. A virtual collaboration using CMC media may create new value by overcoming the logistical constraints. On the other hand, it may also generate various managerial risks such as communicational depersonalization, process dissatisfaction, and low cohesion. Therefore, this study suggests that organization managers should carefully choose the CMC mediums and monitor individual member's cognitive and affective psychological processes during virtual collaboration to reduce potential risks in virtual collaboration.

• 한국사회복지학
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• 제1권
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• pp.51-71
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• 1979

During last five years several workshops and seminars among social work educators, in and out country, has taken place. In those gatherings there has been, criticism on American model on which curriculum of social work in Korea has mainly based, and many proposals which most developing countries should consider and adopt for developing their own curriculums. The proposals could be summarized as follows; 1. Specification of developmental functions of social work should be made so that the curriculum could involve. It also must come from own societal needs and own national development task. 2. Social work should participate and make contribution to plan and solve the main social problems in own countries. 3. Clarification of educational objective in undergraduate level should be made and one of them must be related to the first professional degree. 4. There should be the courses which provide the content of macro level participation. How much of the proposals are reflected in the current curriculum of Korea? What are the problems Korean social work education has been faced in connection with reflecting the proposals? What kinds of task we should or could perform in order to adopt the proposals? These are the questions which deserved to be studied. The followings are the answers to the questions; 1. The new courses such as social welfare policy and planning, Social Development, Population Dynamics and Family Planning, Social problems, Special Issues in Social Welfare, etc, are placed in the curriculum. 2. Though the new courses are added the courses of case work, group work, and community organization are strongly remained it means that integrative method is not quite adopted and that conflicts are taking place between new and old fashion. 3. Fieldwork placement policy has been changes from concurrent to block and from social work method oriented to social problem oriented. 4. There are lack of integration among the all courses, of consistency between pre and post courses and connection among the related courses. 5. Establishment of image of social worker with B, A. degree should be urgently taken place. It can't be done by social work field alone but by cooperation with all the forces related to the social work practice. 6. B. A. graduate should have a common base of knowledge and competence. It could be come from the clear and specified objectives of undergraduate level education. And agreement among the member schools on the objectives can call on the fundamental similarities in each curriculums. Different programs from one school to another can be tolerated as long as there are fundamental similarities among the schools. Basic concepts and framework of social work should be kept clearly. It is a slow and long process to make social work recognized as a profession in the developing countries. Korea can't be and exception. Failure of having social work be indegenous can't be the reason to refuse an change the basic concepts of social work. One of he most important task which social work education in Korea must achieve in the near future is to establish the minimum requirement courses in the curriculum. Social work field, on the other hand, must find the positions for the social works in the various settings and institute. Clear role and image of social worker can be obtained by doing that.

• 대한공업교육학회지
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• 제36권1호
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• pp.167-190
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• 2011

이 연구는 기술 가정과 '정보통신기술의 활용'단원에서 문제 해결 과제중심 수업이 주요 개념의 이해 정도와 학습 태도에 미치는 효과를 밝히는 데 그 목적이 있다. 이를 위해 4차시에 해당하는 '정보통신기술의 활용'단원을 실험집단에게는 문제 해결 과제 중심 수업으로 진행하고 통제집단에게는 강의식 수업으로 진행하였다. 서울특별시 소재 중학교 2학년 2개 학급 각 68명으로 구성된 실험집단과 통제집단에 대해 개념의 이해 정도와 학습 태도를 실험한 결과는 다음과 같다. 첫째, 정보통신에 대한 개념 이해 정도를 알아본 실험에서는 사전장사에서 두 집단 사이에 유의미한 차이가 나타나지 않았으나 사후검사에서는 문제 해결 과제 중심 수업을 한 실험집단이 강의식 수업을 한 통제 집단보다 평균 5.87점 높게 나타났다. 아울러 p< .05 수준에서 통계적으로 유의미한 차이를 보였다. 정보 통신에 대한 개념을 4개의 하위 영역으로 구분하였음 때, 통신의 원리와 방식, 네트워크의 연결에 대한 개념 이해에 관한 2개 영역의 검사에서는 두 집단 사이에 p< .05 수준에서 유의미한 차이를 보이지 않았으나 나머지 2개 영역인 정보의 표현과 유형, 통신 네트워크의 구성과 종류에 관한 개념 이해 검사에서는 유의미한 차이가 나타났다. 둘째, 학습태도에 관한 실험에서는 문제 해결 과제 중심 수업을 적용한 실험집단이 강의식 수업을 적용한 통제집단보다 학습태도가 더 바람직하게 변화되고 있음을 확인할 수 있었다. 이러한 결과는 '정보통신기술의 활용'단원에서 문제 해결 과제중심 수업이 강의식 수업에 비해 주요 개념의 이해 정도와 학습 태도를 보다 긍정적으로 향상시킴을 보여준다.

• 정보관리학회지
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• 제15권3호
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• pp.133-150
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• 1998

본 연구에서는‘조직지식중심적 지식경영’을 위해 지식창조원리로서 음양이론을 도입하여 영역지식 (陽의 지식)과 업무지식(陰의 지식)이 음양(陰陽)의 순환적 구조로서 상호 작용하여 조직지식으로 창출되는 과정을 저장하여 재활용하기 위한 지식 창조적 조직메모리를 제안하였다. 지식 창조적 조직메모리 구축을 위하여 객체 지향적 방법론을 적용하여 영역지식과 업무지식의 순환적 흐름을 주도하는 3개 지식 컴퍼넌트를 설정하여 조직지식을 설계하였다. 조직지식은 기존의 정보시스템에 포함된 데이터베이스 스키마. 프로세스 모델 또는 지식베이스의 의미네트워크(Semantic Network), 프레임(Frame) 등을 수용하기 위해 (i) 지식객체와 (ⅱ) 객체간의 관계 및 (ⅲ) 관계정도를 정의한 그래프구조로서 설계하였다. 이러한 조직지식의 설계는 지식마이닝 기법인 사례기반추론(Case Based Reasoning)등을 활용한 새로운 조직지식의 생성에 기여할 수 있다.

• 유통과학연구
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• 제18권1호
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• pp.107-121
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• 2020

Purpose: Shared mobility services are the most notable in the shared economy; however, they have yet to be activated in Korea due to various regulations and conflicts amongst stakeholders. Nevertheless, shared mobility has become an irresistible trend of the times, as it can cause a great deal of economic and environmental benefits. In this vein, the purpose of this study is to contribute to the revitalization of shared mobility services in Korea and to provide service providers with implications for developing consumer-oriented marketing strategies. Research design, data and methodology: Based on the reasons that the users do not use shared mobility service, the factors influencing the behaviors of shared mobility users are structured and analyzed in a reliable, technical and procedural manner. To this end, the theory of reasoned action (TRA) of Ajzen and Fisbbein, the initial trust model (ITM), task technology fit (TTF) and switching cost (SC) are adopted. A total of 202 questionnaires were collected from the respondents who were aware of shared mobility. Then statistical processing of the collected data used SmartPLS(v.3.2.8), a PLS-SEM (Partial Least Squares Structural Equation Modeling) analysis program. The steps of the analysis are as follows. First, a PLS-Algorithm analysis was performed to evaluate the measurement model, and a Bootstraping and Blindfolding analysis was performed to evaluate the structural model and verify the hypotheses. Second, a multi-group analysis (PLS-MGA) was conducted to further analyze the differences depending on whether or not users experienced shared mobility service. Results: The results showed that initial trusts model (ITM) and task technology fit (TTF) have positive effects on users' behaviors through the mediation of the intention to use. As opposed to the assumption, switching costs did not have negative moderating effects in relation to the intention to use and users' behaviors. The influence of IT self-efficacy was significant, depending on the prior experience to use shared mobility services. Conclusions: This study will contribute to the revitalization of domestic shared mobility services and the formulation of service providers' marketing strategies. In future studies, there is a need to explore, reconstruct, and validate factors other than the impact factors of the shared mobility services used in this research model.

• Journal of Mechanical Science and Technology
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• 제17권7호
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• pp.999-1010
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• 2003

Uninterrupted power supply has become indispensable during the maintenance task of active electric power lines as a result of today's highly information-oriented society and increasing demand of electric utilities. This maintenance task has the risk of electric shock and the danger of falling from high place. Therefore it is necessary to realize an autonomous robot system using electro-hydraulic manipulators because hydraulic manipulators have the advantage of electric insulation and power/mass density. Meanwhile an electro-hydraulic manipulator using hydraulic actuators has many nonlinear elements, and its parameter fluctuations are greater than those of an electrically driven manipulator. So it is relatively difficult to realize not only stable contact work but also accurate force control for the autonomous assembly tasks using hydraulic manipulators. In this paper, the robust force control of a 6-link electro-hydraulic manipulator system used in the real maintenance task of active electric lines is examined in detail. A nominal model for the system is obtained from experimental frequency responses of the system, and the deviation of the manipulator system from the nominal model is derived by a multiplicative uncertainty. Robust disturbance observers for force control are designed using this information in an H$\_$$\infty$/ framework, and implemented on the two different setups. Experimental results show that highly robust force tracking by a 6-link electro-hydraulic manipulator could be achieved even if the stiffness of environment and the shape of wall change.

• 정보과학회 논문지
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• 제43권8호
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• pp.893-901
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• 2016

사물인터넷 환경에서 사용자가 자신의 태스크를 수행하기 위해서는, 태스크 수행에 사용되는 서비스들을 제공하는 사물인터넷 기기를 검색하는 과정이 필요하다. 사용자가 필요로 하는 태스크는 기술이 발전함에 따라 더 많은 서비스들이 복합적으로 결합된 형태로 변하는 중이다. 이 때 태스크를 구성하는 많은 수의 서비스들이 사용자 태스크를 효과적으로 수행하기 위해서는 검색된 사물인터넷 기기들이 지리적으로 서로 인접하여 위치해야 한다. 또한 동적으로 변화하는 사물인터넷 환경의 특징을 고려하여 안정적으로 서비스 검색이 이루어져야 한다. 이러한 문제를 해결하기 위해 본 논문에서는 동적 모바일 애드혹 네트워크 환경에서 지리적 응집력을 갖는 두 가지의 서비스 검색 방법을 제안하고, 지리적 응집도를 바탕으로 기존의 서비스 검색 방법과 비교, 평가하였다.