키토산 구슬을 이용한 가토 연골세포의배양

장의찬,김경환,저호중,이기현,정상인,손태일 대한정형외과연구학회 2003 대한정형외과연구학회지 Vol.6 No.2

재원기간중 사망한 급성 심근경색증 환자의 임상적 특징

현대우,김기식,신이철,박소영,배장호,한창엽,김윤년,김권배 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.9

Al-Cu-Mn 합금의 내열특성과 조직변화

章昌範,趙顯麒 경북대학교 산업기술연구소 1987 産業技術硏究誌 Vol.15 No.-

Experiments were carried out to improve the heat-resistance characteristic of Al-Cu-Mn alloy with ageing condition and casting condition. The results obtained were as follows : The alloys were rapidly solidified from the melt at cooling rates between 10^2 and 10^3K/sec using water cooling mold. Specimens which produced by rapid solidification method appeared better heat-resistance characteristic than commonly used mold casting method. By addition Mn element to Al-Cu binary alloys, age hardening was delayed and ageing hardenability was decreased because T phase exist as dispersed phase at solid solution treatment. T' phase revealed better heat-resistance at temperature than θ' phase by TEM observation.

법랑아세포성 섬유치아종

장현선,기근홍,김수관 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.6

Ameloblastic fibro-odontoma consists of ameloblastic fibroma combined with an odontoma. Ameloblastic fibro-odontoma affects somewhat younger patients than ameloblastic fibroma and 62% of patients are younger than 10 years. Clinical, radiologic, and histologic studies were performed in 9-year-old child of ameloblastic fibro-odontoma. Location of the lesion was the upper molar area. Radiographically, the opaque odontomatous tissues was observed in a circumscribed, but otherwise radiolucent area. Histologically, typical ameloblastic fibro-odontoma was associated with the calcifying or calcified dental tissues of an odontoma. In this paper, a case of ameloblastic fibro-odontoma of the maxilla and a review of the literature is presented.

LAN 환경에 적합한 저비용 고효율 스트림 서비스 알고리즘

홍현기,장혁수 明知大學校 産業技術硏究所 2002 産業技術硏究所論文集 Vol.21 No.-

Most stream servers currently in use are developed for WAN (Wide Area Network) or Internet to serve live video and VOD (Video On Demand) images. They are large in size and expensive, but not scalable to meet growing user requests. So, the users have to purchase more powerful, but expensive servers. However, many schools and institutions are not affordable to buy them, which are in fact too powerful for their LAN environments. This paper proposes a cost-effective algorithm which works efficiently in LAN environments. Each host of an institution belongs to a group in which a server is responsible for transmitting all the required services to the client hosts internally within the same group as well as to the remote servers externally. Once the remote server gets the services from the original server, it retransmits them to its members. As a result, it can reduce significant amounts of traffic and utilize the network resources more efficiently.

멀티미디어 통신을 위한 인터넷 용량관리 기능

방기천,장희선,신현철 남서울대학교 공학연구센터 2002 공학연구 Vol.3 No.-

The traffic engineering consists of traffic management, capacity management and network planning. In this paper, we present the capacity management function in traffic engineering for next generation multimedia internet services. The link capacity design, shortest-route design and multiple-time network design model is presented. Finally, day-load variation design model and traffic forecasting/reservation model for internet traffic are introduced.

모든 호스트에서 사용 가능한 생방송 스트림 서버 모듈 개발에 관한 연구

홍현기,장혁수 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

Most existing stream servers set up a new independent session as a new request arrives from and end user. They are to be equipped with relatively expensive layer 3 or switches to support more users, though the switches are not affordable in most small and medium scale institutions such as colleges and K-12 schools. We develop a live stream server module which could be implemented/ported in any hosts in small and medium size intranet. Once the module is implemented in any hosts, the hosts can be a server regardless of their location in the intranet and the expensive layer 3 or 4 switches are not necessarily needed in the server.

인라인스케이트 선수들의 진로의사결정 유형과 관련변인에 관한 연구

김장환,박진기,최현숙 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

The purpose of this study is to examine various types and factors influencing decision-makings for athletic careers through analysis by academic backgrounds, athletic achievements, influence of other people, and self-conception. The results of this study are as follows. First, while there were no significant differences in types and degrees of maturity, high school students pursuing college entrance indicated higher scores than college students whose majors were already decided in the degrees of maturity. Individuals and groups with higher athletic achievements had significant differences in adaptation to athletic life and team satisfaction rather than those with lower achievements. Second, there were significant differences in adaptation to athletic life, and as its sub-factors, team satisfaction and inter-relationship with colleagues, coaches, and managers by influence of other people. As positive evaluations were made by important people and self-conceptions were higher, reasonable decision-making were done in adaptation to athletic life. On the contrary, as negative evaluations were made by important people and self-conceptions were lower, intuitive and dependant types indicated significant differences in team satisfaction and inter-relationship with colleagues, coaches, and managers. The more positive influences they had, the more reasonable types they chose. Third, moral, physical, academic and social self-conceptions of athletes indicated significant differences in adaptation to athletic life, team satisfaction, and inter-relationship with colleagues, coaches, and managers.

혈장 섬유소원의 농도 및 섬유소원 유전자 다형성이 관동맥 질환의 발생에 미치는 영향

박현영,오수환,권혁문,김동수,흥범기,이남호,장양수 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.8

수영장의 서비스 품질, 고객만족, 전환장벽이 고객충성도에 미치는 영향

김장환,박진기,예종현 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

This Study, Effects of Quality Services, Customer Satisfaction, and the Switching Barrier on Customer Loyalty of Swimming Pools, aims to determine the relationships between (1) services rendered, (2) customer satisfaction, and (3) the switching barrier of public swimming pools in Daegu, Korea with resultant (4) customer loyalty using the regression analysis. To achieve this goal, the Study establishes a hypothetical model based on prior related research, The Systematic Stratified Cluster Random Sampling Method was used in evaluating the sampling data The results of the research conducted using the above-mentioned study methods and data analysis are as following: 1. The more a customer was aware of the services provided by swimming pools, the closer the reciprocal personal relationship and the higher switching costs. Both the reciprocal personal relationship and switching costs are sub-variables of the switching barrier, However, when customers were well-aware of the services being provided, the attractiveness of alternatives seemed to decrease, 2. The more customers were aware of the services provided by swimming pools, the more they felt satisfied with a pools services. 3. As the reciprocal personal relationship developed and the switching costs increased, the switching barrier appeared to increase, However, the attractiveness of alternatives turned out to have minimal or no influence on the switching barrier, 4. The more customers felt satisfied with the pool they were using, the greater the switching barrier became and thus less likely that the customer would change pools, 5. As the switching barrier increased, the customer loyalty to a pool also improved, 6. The service quality, sub-variables of the switching barrier, customer satisfaction, and the switching barrier had significant impacts on customer loyalty to the swimming pool he or she was using at the time, In summary, a customers awareness of exemplary user services of a swimming pool helps him or her to better understand the sub-variables of the switching barrier (except the attractiveness of alternatives) and results in greater customer satisfaction and loyalty of a truly quality-conscious, health facility, In turn, a better understanding by a customer of a pool facilities, services and customer-conscious ness contributes significantly to building the switching barrier and results In higher customer loyalty by the client, Therefore, owners and operators of swimming pools in Dae gu, Korea should focus on three key elements to customer satisfaction: (1) quality of user-services, (2) customer satisfaction, and (3) the switching barrier, Prioritizing pool operations around these three fundamentals will enable pools in the area to gain market share and improve customer loyalty, long term.