시험성토 단면에서의 다짐에너지에 따른 LFWD 변형계수의 변화

최찬용(Choi Chan-Young),김현기(Kim Hyun-Ki),배재훈(Bae Jae-Hoon) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-

PLT where from site is used mainly with compaction maintenance of quality, CPLT and LFWD, in order to be a Young"s modulus of using a direct arrival wave executed a site experiment. According to the roller compaction number of times measured the degree which changes and a promise management aptitude evaluation executed.

네트워크 식별자 기반 파일 공유 오버레이 네트워크

배일호,이정기,박찬모,이호영,정성옥,이준 朝鮮大學校 電子情報通信硏究所 2003 電子情報通信硏究所論文誌 Vol.6 No.2

근 수 년간 클라이언트/서버 모델에서 발생하는 문제인 서버 병목 현상, DoS (Denial of Service) 공격, 그리고 시스템의 확장성에 따르는 비용 증가 등의 문제를 해결하기 위한 방법으로 P2P (Peer to Peer) 방식이 활발히 연구되고 있다. P2P 방식을 사용하는 모델은 기존의 클라이언트/서버 모델이 적용되었던 여러 분야에 이용되고 있다. 그 중 사용자간 파일 공유하는 분야에 적용된 P2P가 가장 널리 알려져 있다. P2P 파일 공유 네트워크에서 가장 중요한 이슈는 검색의 효율성이다. 검색의 효율성을 위해 제안된 가장 효과적인 접근법으로는 DHT(Distributed Hash Table)을 사용한 검색 기법이다. 이 방식에서 메시지 라우팅은 정보의 검색과 분산을 위해 사용되고, 메시지 라우팅 성능은 라우팅 Hop 수에 의해 결정된다. 그러나 기존의 접근법에서는 라우팅 Hop 수를 감소시키는 능력이 부족하다. 이를 해결하기 위해 본 연구에서는 네트워크 식별자와 노드의 그룹화에 의해 메시지 라우팅 성능을 개선하기 위한, DHT를 사용한 P2P 파일 공유 네트워크를 제안한다. 노드의 그룹화는 메시지 라우팅 Hop을 감소시키고, 한 노드 내에 많은 노드를 나타내어 확장성을 갖고 있다고 할 수 있다. 실험에는 네트워크 시뮬레이터를 사용하여 증가된 확장성과 성능의 개선을 보였다.

국제스포츠 정보 시스템의 현황 분석

육조영,윤찬호,김범수,노덕선,이무연,배진희,이승훈 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

Information has become a strategic tool with progress of sports science and sports technology. Demand on sports information is spreading to leisure, recreation, sociology, science of nutrition, psychology, sports medicine, sports therapy, prophylactic medicine, alternative medicine, sports industry and sports nature etc. if on line data base can be manipulated freely then acceleration and quality improvement of the study in this field can be effected and it is possible to gain new insight for receiving latest information But next problem is cost for use. For this reason this author summarized quick and effective on lline search points as follows: 1. Data base should be chosen with clear purpose for its use. Conduct prior investigation on contents and fee system of data base. With the same data base fee system may be differed depending on distributor therefore it is necessary to try different distributors at first as much as possible. 2. Prior to starting on line search prepare search method. If on line is started and then search method is checked than quickly telephone charge will go up. Search method should be prepared in advance by thinking sufficiently of what theme is to be searched. 3. Look for good advisor: lf there is no advisor nearby then the best thing is counselling with the person in charge for the distributor. If the result of search is stored at floppy disk by "downloading" then even after communication line is cut off it will be possible to print out anytime. 4. In this study the author explained about on-line search of lterature data line but recently it is possible to search overseas sports news or information on rate of victory or defeat of prfessional footbali etc. in real time. In Japan it is possible to search feature articles of Nihon Kesai or Asahi (except culture and sports column) by on-line. However in our country there are not many data bases in the field of sports and physical education which can be on-line searched. Our country belongs to up per level in the world in terms of study of sports science and technology and we are attracting attention from countries in Asia and from different parts of the world and the task facing us now is developing independent and unique data base for our country.

위발성 위장관 악성림프종 환자에서 항암치료의 효과

김찬규,신영록,김현정,배상병,이남수,이규택,박성규,원종호,홍대식,박희숙 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

Purpose: The gastrointestinal (GI) tract is the most common site of extranodal non-Hodgkin's lymphoma (NHL), which is increasing in incidence, but there is no established optimal treatment modality. Thus, this study was investigated the clinicohistologic feature, the therapeutic modalities, and the prognosis for GI-NHL, as well as the factors affecting it. Methods: We retrospectively analyzed 45 patients who had been diagnosed as having GI-NHL and had been followed up from July 1994 to February 2005 at Soonchunhyang University Hospital. The patients were divided into groups according to the site of origin and to various other features, and the survivals of the various groups were compared. The modified Ann Arbor system and WHO classification were adopted for staging and histopathologic classification, respectively. Results: GI-NHL of the stomach, small bowel, ileocecal region, and colon occurred in 28 patients (62.2%), 5 patients (11.1%), 3 patients (6.7%), and 8 patients (17.8%), respectively, In one patient, the entire gastrointestinal tract was diffusely involved. The median age of patients was b5 years (25~78 years), and male-to-female ratio was 1:1.1. Fourteen patients were in stage Ⅰ, 24 in stage Ⅱ, 4 in stage Ⅲ, and 3 in stage Ⅳ. Surgical resection was performed in 19 patients, and combination chemotherapy was performed in 43 patients. Surgical resection only was performed in 4 patients, Chemotherapy only was performed in 26 patients. The expected overall 5 year survival of 45 patients was 39.6%, and there was a significant survival difference between the stages, but between sites of origin (p=0.842). The most important factors influencing the survival was the stage and other factors were not significant. Conclusion: The stomach was the most common site of GI-NHL. Most GI-NHL were localized Stage was the most important prognostic factor. However, Prospective randomized studies are needed to approve the therapeutic modality.

MANET 라우팅 프로토콜 QoS 지원서비스의 성능평가에 관한 연구

鄭燦赫,金鉉郁,李光培,姜景仁,朴京培,劉忠烈,吳世德,裵振勝,趙榮泰 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-

In this paper, we evaluated two main QoS supporting routing protocol on wireless ad hoc network. At presence, wireless mobile communication focuses on how to efficiently support mobility of users more than QoS guarantee. However, in order to satisfy requirement of various applications which have been or will be served, QoS support service between source and destination becoming a very important issue. Of all routing protocols, DSR and AODV are very important routing protocol in MANET. So we simulated DSR and AODV QoS Routing Protocol Through simulation evaluation tool NS(Network Simulation) based on various environments.

환경농업조성지구내 용수원 및 채수시기별 수질비교

김찬용,김창배,김종수,서영진,윤재탁 한국환경농학회 2002 한국환경농학회지 Vol.21 No.3

A study was conducted to investigate the seasonal changes in water quality of watershed in the Agricultural Environment Promotion Zone. samples collected were 12 GW (ground water), 2 IW (irrigation water), 2 SW (stream water) in An-Doug City, 4 GW, 6 IW, 11 SW in Young-Yang Gun, and sampling was conducted separately during dry and rainy season. In the ground water, EC and ionic species, except pH, were higher than those in stream water, and especially NO_3-N concentration exceeded the limitation of drinking water. Concentration of ions decreased as the sampling depth was far from the soil surface. During a rainy season, the concentrations of NO_3-N and K In the stream water were slightly higher than those during season. COD was lower during dry season in Yong-Yang, while the trend was contrasted to An-Doug. These results suggest that ground water was polluted by fertilization and compost while streamwater was polluted by loss of soil and organic during the rainy season. Principal chemical components related with changing water quality were EC, NO_3^-, Ca, Mg, Na, CI^-, SO_4^- in ground water, whereas NH_4-N, K, Mg, CI^-, SO_4^- in stream water.

고요산혈증의 위험인자 : 아산시 지역 주민을 대상으로

김용배,장원기,황보영,김화성,안규동,이병국,이용진,이종은,이준숙,이찬구,이한정,이성수 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

Objective : Serum uric acid has now been identified as a marker for a number of metabolic and hemodynamic abnormalities. The aim of this study is to evaluate risk factors which influence hyperuricemia in the citizens of Asan. Method : The study design was cross-sectional and research subjects were 1086 citizens of Asan. General characteristics, cigarette smoking, alcohol consumption, and past history were obtained by interview using a structural questionnaire. Also, we measured height, weight and blood pressure, and serum uric acid of the subjects. Results : The mean serum uric acid level was 5.27 ㎎/㎗ in men and 4.01 ㎎/㎗, in women, In the multiple logistic regression analysis, statically significant risk factors of hyperuhcemia were gender, body mass index, blood lead concentration, and serum creatinine. Conclusion : Our results suggest that gender, body mass index, blood lead concentration, and serum creatinine might be the most important risk factors of hyperurcemia. Education program as well as routine check-up for serum uric acid was highly recommended for the effective prevention of hyperuricemia.

Lipase를 이용한 (S)-3-acetoxy-2-methylpropanol의 제조

서영배,서연찬,이갑득 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.2

Captopril, α-tocopherol, erythromycin A, muscone과 같은 의약품, 향료등 생리활성물질의 합성에 있어서 유용한 중간원료로 이용되는 광학활성인 D-(-)-β-hydroxyisobutyric acid를 제조하기 위하여 그 전구체로 (S)-3-acyloxy-2-methylpropanol을 선정하여 lipase의 부제가수분해반응을 이용하여 이의 개발을 시도하였다. 대칭성 기질 2-methyl-1,3-propanediol diacetate 2를 다양한 lipase를 사용하여 부제가수분해(asymmetric hydrolysis)시킨 결과 lipase PS(Amano 제약, Pseudomonas sp.)의 경우는 phosphate buffer pH 7.0 조건하에서 광학순도(optical purity) 95% e.e.의 (R)-(-)-3-acetoxy-2-methylpropanol을 80% 수율로 생산하였으며, lipase AY(Candida rugosa)의 경우는 phosphate buffer pH 6.5/isobutyl alcohol (1/1), O℃의 조건하에서 목적으로 한 (S)-3-acetoxy-2-methylpropanol 3을 광학순도 약 60% e.e.로 생산하였다. Optically active carboxylic acid, D-(-)-β-hydroxyisobutyric acid {(D)-(-)-HIBA} is a useful chiral starting material for the preparation of enantiomerically pure bioactive compounds which have a chiral methyl carbon center in the molecule such as captopril, α-tocopherol, erythromycin A, muscone and so on. (S)-3-Acetoxy-2-mthylpropanol can be used as the precursor of (D)-(-)-HIBA, that is, chemical oxidation of the hydroxyl group and subsequent hydrolysis of acyl group in (S)-3-acetoxy-2-methylpropanol affords D-(-)-β-hydroxyisobutyric acid. (S)-3-acetoxy-2-methylpropanol was prepared by lipase-catalyzed asymmetric hydrolysis. In the enzymatic hydrolysis system, lipase AY (Candida rugosa) provided the expected (S)-3-acetoxy-2-methylpropanol in 60% e.e. of the enantiomeric purity under the phosphate buffer and organic co-solvent system.

전기응집에 의한 도금폐수 처리의 최적화

이찬원,양기섭,윤재일,박영배 경남대학교 환경문제연구소 1998 환경연구 Vol.21 No.-

The zinc containing wastewater from the metal finishing industry was treated by electro-coagulation system. The zine was effectively removed with removal efficiency ranging from 95 to 99%. The operation of the system was conducted to find out the optimum conditions to reduce bleaching out effect from plate, changing important parameters such as reactor plate select, flow rate, pass, amperage and settling time, along with a consideration of O&M costs for the electro-coagulation system. The most effective and economical conditions was concluded to be a combination of Fe plate 1.0 L/min of flow rate, 5 pass, 15 amperage and 30 min settling. The copper plating wastewater was also effectively treated with 94% removal effectively under this optimum condition.

국제 스포츠 정보 시스템의 동향 분석

육조영,임정일,윤찬호,이무연,노덕선,배진희,이승훈 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

As Follow suggested : The purpose of this study was to consider tendency of modern sports information. today Modernst information system had four areas such as collection, clearance, communication and application So, most literuture of America and Europe was collected, cleared, communicated and apilcated in international sports data base. If we utillited communication circuit properly, we could use sports information beneficently at the laboratory and office. In the future and now, one was that special sports institution needed to obtain Education about sports imformation such as information of specialization, and information of knowledge on both soft phase and hard phase of new media. Although korea used date base of foriegn country efficiently, korea had to make effort to create its own information system and wish to avoid friction of economy and fiction of information.