• International Journal of Fuzzy Logic and Intelligent Systems
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• 제5권3호
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• pp.216-221
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• 2005

The rapid growth and spread of the World Wide Web has made it possible to easily access a variety of useful information. It is, however, very difficult to retrieve, manage, and use the desired information in web. Various kinds of systems such as Search engines, MetaSearch engines, Spiders, Softbots, Intelligent Agents or Web Agents have been developed by a large number of researchers and companies. Those systems as intelligent agent are employed to avoid the overload of information. To efficiently improve the Software Agents, it is necessary to represent and classify the retrieved data. And to improve performance of the Intelligent Agents to create the classification, it is offered how to evaluate the propriety with other information retrieved from the Web and to recommend to the user the most suitable information.

• Journal of Information Technology Applications and Management
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• 제13권2호
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• pp.55-65
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• 2006

Since the World-Wide Web (WWW) has become a major channel for information delivery, information overload also has become a serious problem to the Internet users. Therefore, effective information searching is critical to the success of Internet services. We present an integrated search engine for searching relevant web pages on the WWW in a certain Internet domain. It supports a local search on the web sites. The spider obtains all of the web pages from the web sites through web links. It operates autonomously without any human supervision. We developed state transition diagram to control navigation and analyze link structure of each web site. We have implemented an integrated local search engine and it shows that a higher satisfaction is obtained. From the user evaluation, we also find that higher precision is obtained.

• 한국안전학회지
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• 제16권2호
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• pp.36-43
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• 2001

This study is intended to estimate influences upon life cycle of ESPE(Electro Sensitive Protective Equipment) which is kinds of commonly used in press in domestic industry. First the field survey is executed to workers and safety managers at work places. In the survey, the main primary factors influenced the lift cycle of ESPE were vibration due to overload work in workplace. Second, int results showed that 37$m/s^2$ acceleration in press work would lead to the life of 132 for 8 hours work per day. Therefore, the vibration of press inflicted significant effect on the lift of ESPE.

• Journal of Veterinary Science
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• 제22권5호
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• pp.60.1-60.9
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• 2021

Background: Echocardiography is a primary tool used by veterinarians to evaluate heart diseases. In recent years, various studies have targeted standard echocardiographic values for different breeds. Reference data are currently lacking in Maltese dogs and it is important to fill this gap as this breed is predisposed to myxomatous mitral valve disease, which is a volume overload disease. Objectives: To establish the normal echocardiographic parameters for Maltese dogs. Methods: In total, 23 healthy Maltese dogs were involved in this study. Blood pressure measurements, thoracic radiography, and complete transthoracic echocardiography were performed. The effects of body weight, age and sex were evaluated, and the correlations between weight and linear and volumetric dimensions were calculated by regression analysis. Results: The mean vertebral heart size was 9.1 ± 0.4. Aside from the ejection fraction, fractional shortening, and the left atrial to aorta root ratio, all the other echocardiographic parameters were significantly correlated with weight. Conclusion: This study describes normal echocardiographic parameters that may be useful in the echocardiographic evaluation of Maltese dogs.

• 한국전기전자재료학회논문지
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• 제28권6호
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• pp.390-395
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• 2015

Molded insulation materials are widely used from large electric power transformer apparatus to small electrical machinery and apparatus. In this study, by adding MgO with the average particle of several tens nm and the excellent thermal conductivity into molding material, we improved the problem of insulation breakdown strength decrease according to rising temperature in overload or in bad environmental condition. We confirmed the life evaluation by using the insulation breakdown and inverse involution to investigate the electrical characteristics of nano-composites materials. By using a scanning electron microscope, it is confirmed that MgO power with the average particle size of several tens nm is distributed and the filler particles is uniformly distributed in the cross section of specimens. And it is confirmed that the insulation breakdown strength of Virgin specimens is rapidly decreased at the high temperature area. But it is confirmed that the insulation breakdown strength of specimens added MgO slow decreased by thermal properties in the high temperature area improved by the contribution of the heat radiation of MgO and the suppression of tree. The results of life prediction using inverse involution, it is confirmed that the life of nano-composites is improved by contribution of MgO according to the predicted insulation breakdown strength after 10 years of specimens added 5.0 wt% of MgO is increased about 2.9 times at RT, and 4.9 times at $100^{\circ}C$ than Virgin specimen, respectively.

• 지능정보연구
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• 제14권2호
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• pp.63-82
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• 2008

추천시스템은 정보 과부하의 문제를 해결하기 위해 폭넓게 사용되어지고 있다. 지난 수십년 동안 다양한 추천시스템이 정보량이 그것을 처리할 수 있는 능력보다 더 빠르게 증가하게 됨에 따라 개발되어져 왔다. 이 같은 상황에서 본 연구의 목적은 기 개발된 추천시스템을 분석하여 시스템적 관점을 제공하고 이를 구현하는데 따르는 기본적인 이슈들을 밝히는 것이다. 이를 통하여 추천시스템의 개선을 위한 유용한 정보를 제안하며, 시스템 개발자들에게는 그러한 시스템을 개선하기 위한 아이디어를 제공하고자 한다. 특히 본 연구는 추천시스템의 이론적 관점에 집중하는데, 이를 위해 과거 추천시스템의 도메인과 목표, 주요 방법 및 평가 방법에 대해서 다루고자 하며, 이 결과는 통계치나 도표 등의 형태로 보이려고 한다.

• 한국인터넷방송통신학회논문지
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• 제9권5호
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• pp.199-203
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• 2009

최근 MMORPG의 급격한 성장으로 게임의 동시 접속자수가 계속 증가하는 추세이고, 사용되는 게임 공간의 크기도 대규모로 확대되었다. 기존의 맵 기반 분산 서버 구조는 게임영역을 정해진 사각형 영역으로 분리하고 각 영역에 등록된 참가자들을 그 영역의 담당서버에 할당한다. 따라서 참여자 편중으로 인하여 특정 서버에 부하가 편중되는 문제점을 지니고 있다. 본 논문은 이러한 부하 불균형 문제를 해결하기 위해 서버 간의 경계를 동적으로 변경할 수 있는 기법을 제안하였다. 과부하를 지닌 서버를 결정하여 그 서버와 인접한 서버 중에서 최소의 부하를 지닌 서버를 선택하여 부하를 분담하도록 하였으며, 성능평가를 통하여 제안 기법의 효율성을 보였다.

• 한국멀티미디어학회논문지
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• 제9권7호
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• pp.844-853
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• 2006

미래 근거리망, 도시망 및 광역망을 위해 최근에 표준화된 IEEE 802.17 레질런트 패킷링의 공정성 제어 방식은 비대칭 과부하에서 지연지터 특성을 악화시키고 대역폭 손실까지 초래하는 문제점을 갖고 이다. 본 논문은 이러한 문제를 해결하기 위해 기존 방식과 호환성을 유지하는 대역폭 재분배 기반 공정성 제어 방식을 제안한다. 제안된 방식에서 체증노드는 상단노드들의 병목링크 사용을 통제한 결과 얻어지는 병목링크의 가용 대역폭을 측정하고 대역폭이 더 필요한 상단노드의 수를 추정하여 최적 공정속도를 계산하며, 계산된 공정속도를 상단노드로 통보하여 가용 대역폭을 재분배 한다. 성능평가 결과 단 2회의 재분배 시도로 가용 대역폭의 95%를 공평하게 분배하였다.

• 정보처리학회논문지A
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• 제11A권3호
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• pp.181-188
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• 2004

인터넷 기반 분산/병렬 처리 시스템인 PDP(Parallel/Distributed Processing)는 인터넷의 유휴상태 호스트들을 이용하여 대용량 작업을 병렬로 처리해서 전체 수행 시간을 감소시킨다. 본 연구에서는 실시간 네트워크 모니터링을 활용하여 수시로 변화하는 네트워크 환경에 적응하여 병렬/분산 처리되는 방안을 제안한다. 실시간 네트워크 모니터링 정보를 PDP 주요 핵심 알고리즘들에 적용하여 네트워크 과부하 및 결함으로 발생하는 작업 지연 요소에 적응적으로 대처함으로써 전체 성능이 향상됨을 보인다.

• 대한물리치료과학회지
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• 제4권2호
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• pp.383-390
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• 1997

The purpose of this study is the evaluation of the degree of post injection soreness, symptom duration, factor and autonomic symptoms after trigger point injection in patients with trigger points. We devided the subjects of the study into four groups Such as, only dry needling, needle-TENS, with massage-stretch, massage-stretch only, including 100 patients, and measured the visual analog scale before treatment and after treatment. Before treatment, The VAS mean scores were $6.2{\pm}1.03$ in needle-TENS with massage-stretch group ; $6.2{\pm}1.75$ in needdle-TENS group, and $6.3{\pm}1.85$ in dry needling group, and $6.8{\pm}1.03$ in massage-stretch group. In post injection 3rd day, The VAS mean score were $0.9{\pm}1.78$ in needling-TENS with massage-stretch group, $1.1{\pm}1.52$ in needling-TENS group, $1.7{\pm}1.10$ in dry needling group, and $3.9{\pm}3.01$ in massage-stretch group. As for a causative factor of activities for trigger were overload with 37.0%, overwork with 35.0% and fatigue with 13.0%. Symptoms for trigger were tenderness with 28.0%, numbness and tingling with 24.0%. ROM limit with 17.0% and tightness with 17.0%. As a result, needling-TENS with massage-stretch group showed less soreness and effect than other group.