• International Journal of Human Ecology
• /
• v.1 no.1
• /
• pp.37-58
• /
• 2000

Data from the National Longitudinal Study of Youth (NLSY) were used to examine factors related to adolescent behavior problems, smoking, and delinquency. This study focuses particularly on the factors in an adolescent s immediate environment such as family, school, peers, and neighborhood (i.e. the microsystems) for the identification, prevention, and early intervention of adolescent behavior problems, smoking, and delinquent behavior. Both African American and Caucasian American adolescents between the ages of 13 and 17 for whom data were available in the NLSY were included in this study (N=788). Results indicate that delinquent peer pressure and negative attitudes toward school are important determinants of behavior problems, smoking, and delinquency of American adolescents. Differences between African American and Caucasian American adolescents are highlighted.

• 한국IT서비스학회:학술대회논문집
• /
• 2002.11a
• /
• pp.327-333
• /
• 2002

현재까지 e-비즈니스와 관련된 많은 자료들과 솔루션들이 발표되었지만 기업을 위한 e-비즈니스 환경에 IT 기술을 접목시켜 기업의 내부의 IT 기술과 솔루션에 대한 연구가 활발하지 않은 듯 하다. e-비즈니스의 유형은 기업과 고객(B2C), 기업과 기업(B2B), 국가와 기업(G2B), 국가와 국가(G2G) 등으로 세분화 할 수 있으나, 가장 중심적 역할을 하는 주체는 기업 조직이라고 하겠다. 본 연구에서는 많은 e-비즈니스의 구현 기반 기술 중에서 기업 내부 측면의 e-비즈니스 구현 기반기술과 관련된 IT 기술들은 전사적 자원관리를 위한 ERP(Enterprise Resource Planning)와 지식 기반의 정보 분석을 위한 DW/CRM(Data Warehouse/ Customer Relationship Management), 기업내부의 정보 통로인 EIP(Enterprise Information Portal}, 기업내부의 이기종 어플리케이션간의 통합을 위한 EAI(Enterprise Application Integration)와 경영층의 전략적인 의사결정을 지원하기 위한 SEM(Strategy Executive Management), 확장 ERP 개념인 SCM(Supply Chain Management) 기술에 대한 개념적 이해와 기업내부의 e-비즈니스 환경을 위한 적용방안을 밝히고 각 IT별 솔루션의 분류함에 의해 기업의 e-비즈니스 시스템의 구현 방향을 제시하고자 한다.

• Annual Conference of KIPS
• /
• 2003.11b
• /
• pp.943-946
• /
• 2003

본 논문은 OSS/J의 소개, 분석 및 OSS/J 호환 제품 및 OSS/J RI(Reference Implementation)을 사용하여 파일럿 시스템을 구축하고 이의 효과를 분석하여 OSS/J가 관련 업계에 미치는 영향에 대한 조망을 제시한다.

• Transactions of the Society of Information Storage Systems
• /
• v.8 no.1
• /
• pp.6-10
• /
• 2012

The tribological behavior of microsystems needs to be clearly understood in order to improve the reliability of precision components. For example, friction and wear phenomena pose serious problems in MEMS applications. As a first step to investigate the tribological behavior of such systems, an appropriate testing system must be acquired. In this work, a micro-wear tester based MEMS platform was designed. The main concern was to achieve a desirable range of horizontal displacement for the specimen holder and also to apply a normal force in the tens of ${\mu}N$ range. The structural analysis of the micro-wear tester showed that the proposed design satisfied these requirements while maintaining the structural integrity.

• Management & Information Systems Review
• /
• v.26
• /
• pp.133-152
• /
• 2008

In the knowledge and network economy, standards and standardization become an important factor in determining the competitiveness of nations and firms. This paper analyses some cases of firms' strategic standardization. We defined the concept of standards, standardization, strategic standardization, and standardization management, which have been unfamiliar in the academic society. The standardization strategy can be categorized into four types according to firm's management objectives or benefits, including technological innovation, market creation/extension. cost-down, and accreditation. This classification of standardization strategy is very useful in analysing the various kinds of the cases of strategic standardization implementation. We found that standards and standardization have a positive influence on firm's overall performance. In some cases, for example, Dell Computer, Sun Microsystems, Deere & Company, etc., strategic standardization plays a role as a key success factor(KSF).

• Korean Journal of Child Studies
• /
• v.24 no.4
• /
• pp.1-14
• /
• 2003

The daily hassles of 5-year-old children were explored and analyzed as microsystems in order to discover the relative importance of ecological factors in children's daily hassles. The subjects were 322 children, their mothers and 34 teachers recruited from 5 kindergartens and 15 child-care centers in Seoul and Kyonggido province. Children were interviewed individually with pictures showing certain stressful situations. Questionnaires were administered to mothers and teachers. The findings indicated that the microsystem variables of Kindergartens and child-care centers were the most significant factors explaining children's daily hassles. Therefore, it was suggested that the policies and regulations on child-care facilities be carefully developed and strictly regulated.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
• /
• 2002.10a
• /
• pp.370-375
• /
• 2002

Recently, the interest on micro optical parts has increased rapidly with the development of technology related to microsystems. Among the optical parts, micro lens is one of the most broadly used micro parts. To mass-produce the micro lenses, it is very effective to use the mold insert and injection molding process. There are many methods to fabricate the mold insert for micro lenses: electroforming, etching, mechanical micromachining and so on. In this study, we fabricated the mold insert for micro lenses using a micro ball endmill to apply mechanical micromaching method and analyzed the effect of main process parameters such as spindle speed, feed rate, dwell time on the processed surface. Then, using fabricated the mold insert we fabricated the micro lenses through injection molding process.

• 정보화사회
• /
• s.149
• /
• pp.40-45
• /
• 2001

지난 3월은 세계적인 업체들이 한 자라에 모여 저마다 자신의 기술을 뽐내는 기회가 많았던 달이었다. 미 통신기기협회(The Celluar Telecommunications & Internet Association) 주관으로 열리는 ‘2001 CTIA Wireless 쇼’는 예년과 달리 IBM, 컴팩 컴퓨터(Compaq Computer), 썬 마이크로시스템즈(Sun Microsystems) 등 세계적인 컴퓨터 및 반도체 업체까지 대거 참가함으로써 세계 최대규모의 전시회로 부각되고 있다. 또한 "CeBIT-Center for Office and information Technology(사무 자동화, 정보 기술 및 텔레커뮤니케이션 관련 세계 비즈니스 박람회)“ 역시 지난 3월에 세계적인 정보통신기기업체들이 마음껏 자신의 신기술을 뽐내는 자리를 마련했다.정보통신 강국을 향해 끊임없이 노력하고 있는 국내 업체들에게 전시회 리뷰는 좋은 정보가 될 것이다. 지난 3월 21일부터 22까지 미국 라스베가스 Sands Expo & Venetian hotel에서 열린 “CTIA Wireless 2001”과 또한 22일부터 28일 까지 독일 하노버에서 열린 ‘CeBIT 2001 HANNOVER"에서 대한 자료들을 정리, 싣는다.

• Proceedings of the Korea Society for Simulation Conference
• /
• 2005.05a
• /
• pp.139-143
• /
• 2005

The P2P is a network environment supporting data exchange which is directly connected peers without limit of existing server-client and intervening central server for resource or offered service with each peer. JXTA is a representative of P2P system. JXTA is a typical distributed computing model that proposed by Sun Microsystems. JXTA that doesn't require centralized services or resources is adaptable in extreme changes of network organization. MANET(Mobile Ad Hoc Network) is a representative wireless network that is composed of mobile nodes without infrastructure. So MANET establishes the path for the communication of each peers and maintains the newest routing information by exchanging routing information. In this paper, we propose a technique of JXTAMAUET which implements JXTA which is the P2P network system from the wireless network which is becoming the foundation of ubiquitous computing. For the performance evaluation of the JXTAMANET, we use simulation.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.10a
• /
• pp.403-405
• /
• 2001

In an EJB 1.1 specification, every method call made to the Enterprise Java Bean, is potentially remote call. Such remote invocations use the network layer regardless of the proximity of the client to the bean, creating a network overhead. Especially. because entity bean is more notable performance fail by remote call than session bean, frequency of use on Session Bean in work-site operations is much more than Entity Bean. We focus on how to improve the performance on the entity bean with Value Object, which is one of J2EE patterns suggested by Sun Microsystems. We presents related design-issues fur performance testing, the testing results compared with original entity bean and our findings.