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이동 에이전트 기반의 웹 서버 부하 모니터링 시스템 구현
박홍진,Park, Hong-Jin 대한전자공학회 2002 電子工學會論文誌-CI (Computer and Information) Vol.39 No.6
인테넷이 급격히 발전함에 따라 인터넷 사용자가 크게 증가하고 있으며, 이에 따른 웹 서버의 중요성도 증가되고 있다. 인기있는 웹 사이트는 사용자의 집중현상으로 웹서버의 부하가 크게 증가하여 오류가 발생하거나 웹서비스가 중단되는 현상이 발생하기도 한다. 따라서 올바른 웹서비스를 제공하며 웹서버의 성능 관리를 위해서 웹서버의 부하를 효율적으로 모니터링하는 기술이 필수적이다. 기존 클라이언트-서버 방식을 이용한 웹 부하모니터링 기법은 서버 프로그램을 모든 웹 서버에 미리 설치해야하는 문제점이 있다. 본 논문은 클라이언트 서버 방식의 문제점을 해결하기 위해 이동 에이전트를 이용한 웹 서버 부하 모니터링 시스템을 구현한다. 이동 에이전트를 기반하여 구현된 시스템은 미리 프로그램을 설치할 필요가 없으며 네트워크 트래픽을 줄이고 웹서버의 추가적인 부하를 줄일수 있다. According to the rapid evolution of internet, the number of internet users has greatly increased, so that the web servers are getting more important. If there are a great number of users trying to connect to a popular web server, the load of the web server will increase rapidly, so that failures may occur or web services may stop. An efficient load monitoring technique is required for the available web services and the performance management. The traditional techniques for load monitoring of web server using the client-server method have the problem that the server programs in client-server method must be pre-installed to all web servers. This paper implements web server load monitoring system using the mobile agent in order to overcome the problem of client-server computing. The system based on the mobile agent has no need to install the program in advance and it reduces the network traffic and the additional overheads in web servers.
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바실러스 프로바이오틱스를 이용한 발효대두의 제조 및 생리활성
박홍진,오현화,정도연,김영수 한국식품영양과학회 2020 한국식품영양과학회지 Vol.49 No.1
Bacillus subtilis strains that have probiotic properties, such as acid resistance, bile resistance, intestinal adhesion, and antimicrobial activity, were isolated from Korean traditional fermented soybean products. The in vitro anti-obesity and anti-cancer effects of extracts from fermented-soybeans produced with the selected strain (B. subtilis JBS17166) were investigated. B. subtilis JBS17166 had a high survival rate of 70.52% in acidic environments and 80.22% in bile environments. This strain had high adhesion rates for Caco-2 cells and mucin with 78.59% and 74.32%, respectively. The antimicrobial activity of this strain on Bacillus cereus KACC 13064 and Staphylococcus aureus KACC 1927 was also confirmed. The extract from fermented-soybean, which was developed using B. subtilis JBS17166, had a high anti-obesity effect (59.95%) on 3T3-L1 preadipocytes at 24 h. In addition, this extract had anti-cancer activity (IC50), showing 1.80 mg/mL and 1.09 mg/mL for HepG2 and HT-29 cells, respectively. Based on these results, it is expected that fermented-soybeans manufactured using B. subtilis JBS17166 as a probiotic could be beneficial as a synbiotic with anti-obesity and anti-cancer effects. 프로바이오틱스 특성을 보유한 Bacillus 속 미생물을 선발하여 대두발효에 이용하고, 제조된 발효물의 in vitro 항비만과 항암 활성을 평가하였다. 프로바이오틱스 특성을 평가하기 위하여 실시한 내산성, 내담즙성, 장부착능 측정 결과, B. subtilis JBS17166 균주는 우수한 생존율 및 장부착능을 보유하는 것으로 확인되었으며 B. cereus와 S. aureus에 대한 항균 활성이 있는 것으로 확인되었다. 최종 선발된 B. subtilis JBS17166 균주를 사용하여 제조한 대두발효 추출물(24 h, 48 h)에 대한 항비만 및 항암 활성을 평가한 결과, 3T3-L1 세포주를 활용한 항비만 효과는 대두발효 추출물(JBS17166, 24 h) 첨가구에서 59.95%의 지방분화 억제능이 있는 것으로 확인되었다. 암세포주(HepG2 및 HT-29)에 대한 항암 활성의 경우 B. subtilis JBS17166 균주를 이용하여 제조한 대두발효 추출물이 비발효 추출물(control)에 비해 약 2배 작은 IC50 값을 가지는 것으로 확인되었다. 이와 같은 결과를 토대로 프로바이오틱스로서 B. subtilis JBS 17166 균주를 사용하여 발효한 대두발효물은 항비만 및 항암 효과를 보유한 신바이오틱스로 유용할 것으로 기대된다.
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박홍진 圓光大學校 法學硏究所 2004 法學硏究 Vol.20 No.-
The biggest problem with ship mortgage system is that there are no laws about ship mortgage system. All laws related to ship mortgage are based largely on real estate mortgage in Civil Law. But it is not properly prepared. The peculiarity of marine enterprises is not considerd. So to operate the ship mortgage system more effectively, the special law-making or such legal complements as the simplification of procedure are needed. This paper deals with ship mortgage system and is centered on what is the subject of ship mortgage, how it should be set up, what are the priorities and the range and extinctive reason of ship mortgage. And it compares the 1993 convention and the ship morttgage system of major shipping countries with ours and suggests the ways to activate our ship mortgage system.
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박홍진 圓光大學校 法學硏究所 2006 法學硏究 Vol.22 No.2
The provisions of the article 2, paragraph 1, Na of the Law Governing Prevention of Unfair Competition and Protection of Business Confidentiality (to be called hereinafter as the "Law") stipulate that "it shall be deemed as an act of unfair competition to confuse business facilities or marks with others by using identical or similar marks that are widely perceived in the domestic market to identify certain names, trade names, service marks or else indicating the business of others". Marks are generally supposed to differentiate something from others, divided mainly into human and material ones. Human marks may include names and trade names while material marks may refer to trademarks, service marks, marks for origin and quality, etc. Of these, business marks can be said to be those which indicate business of others. Most important of business marks are trade names and trademarks. Trade names and trademarks are different from each other in terms of legal origins, intentions and contents of application, uncompatible legally in a word. However, a trade name may be used as trademark for the products one deals with, and a trademark, likewise, can be used as the registered trade name. Since the legal protection of the two is commonly aimed at protecting marks in actual transactions, both are common and closely connected with each other in this context and therefore it may be an inevitable consequence to come to a legal deadlock in execution and protection of each right prescribed in the "Law", the Commercial Law and the Trademarks Law. In the floods of advertisement like today, trade names and trademarks tend to be used and fused with each other without difference, causing problems of quasi trademarks and trade names to appear in a try to take advantage of popular trade names or marks. This paper arms to explore the general concepts of a trade name and trademark and to find solution to problems occurred in connection with the deadlock which has been frequently caused from confliction or infringement of trade names and trademarks.
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박홍진,Park, Hong-Jin 한국정보처리학회 2006 정보처리학회논문지 A Vol.13 No.6
The data grid computing provides geographically distributed storage resources to solve computational problems with large-scale data. Unlike cache replacement policies in virtual memory or web-caching replacement, an optimal file replacement policy for data grids is the one of the important problems by the fact that file size is very large. The traditional file replacement policies such as LRU(Least Recently Used) LCB-K(Least Cost Beneficial based on K), EBR(Economic-based cache replacement), LVCT(Least Value-based on Caching Time) have the problem that they have to predict requests or need additional resources to file replacement. To solve theses problems, this paper propose SBR-k(Sized-based replacement-k) that replaces files based on file size. The results of the simulation show that the proposed policy performs better than traditional policies. 데이터 그리드는 대용량의 데이터 어플리케이션 처리를 위해 지리적으로 분산되어 있는 저장 자원을 제공한다. 대용량을 처리해야 하는 데이터 그리드 환경에서는 기존 웹 캐싱 정책이나 가상 메모리 캐쉬 교체 정책과는 다른 파일 교체 정책이 필요하다. LRU(Least Recently Used)나 LCB-K(Least Cost Beneficial based on K), EBR(Economic-based cache replacement), LVCT(Least Value-based on Caching Time) 같은 기존의 파일 교체 전략은 파일 교체를 위해 추가적인 자원이 필요하거나 미래를 예측해야한다. 본 논문은 이를 해결하기 위해 파일의 크기에 기반하여 파일 교체를 수행하는 SBR-k(Sized-based replacement-k)을 제안한다. 성능평가 결과 제안한 정책이 기존의 정책보다 더 나은 성능을 나타낸다는 것을 확인하였다.
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