資源制約下의 PERT/CPM의 Heuristic 解法硏究

鞠光鎬 청주대학교 이공대학 공업경영학과 1983 工業 經營 論集 Vol.1 No.-

본 논문은 제한된 자원하에서 PERT/CPM network의 각 활동을 어떤 순서로 수행하는 것이 전체 활동수행 시간을 줄일 수 있는가를 세가지 휴리스틱 기법을 사용하여 비교 분석하였다. 즉 PERT/CPM에서 LS(lastest start time)가 작은 순서대로 활동을 수행하는 방법과 현재 작업을 시작할 수 있는 활동중에서 주어진 자원을 최대한으로 활용하는 활동조합부터 수행하는 방법, 그리고 현재 즉시 활동을 수행하지 않으면 현재로서 가능하리라 생각되는 전체 활동수행 시간이 지연되는 활동들을 우선적으로 수행하고, 남은 자원들을 최대한으로 활용하는 활동조합을 수행하는 세가지 휴리스틱 기법을 비교 분석하였다. 세가지 기법중 어느 한 기법이 항상 좋지는 않았고 경우에 따라서 각 기법이 나음을 알 수 있었다. 따라서 한가지 기법만 사용하기 보다는 세가지 기법을 모두 사용하여 해를 구하고 그중 나은 활동수행 순서를 택하는 것이 바람직하리라 생각된다.

酵母의 形性質細胞 形性과 2μm-DNA, plasmid의 分離에 關하여

張光燁,朴文국 全北大學校 基礎科學硏究所 1985 基礎科學 Vol.8 No.1

The roles and functions of 2㎛ DNA plasmid which is an important element for the research on the molecular genetics of yeasts are still unknown. When the protoplast or spheroplast is produced from yeast, its intracelluar DNA can be easily isolated. The conditions for the production of protoplast from yeast were determined in this study. Aming the factors that affect of the production of protoplast are kinds and concentrations of osmotic stabilizers, growth phase of cells, and enzymes for lysis of cell wall. Six hundred mM of KCl or 1 M of Sorbitol was most efficient for pottoplast formation as osmotic stabilizer, The cells of mid-late exponential phase were well formed to protplasts, DNA plasmid was determined with agarose gel electrophoreis.

韓國文學史 敍述의 比較硏究

李光國 건국대학교 1979 論文集 Vol.10 No.1

This study is a comparative study of our literary history. This study is dissertation type composed of three parts in all. Part one is the general theory of literary history, part two is the comparison and analysis of Korean literary history by the general theory, and part three is the conclusion. The above-mentioned process is as follows: (1) As the starting point of the process of recognition is terminology, it is an urgent problem to build the concept of terminology. (2) As literary history is identical with general history in process, the general theory of history must be introduced into the study of literary history. (3) The method in which literary history is described must be a structure built of history, philosophy, art and science. (4) Literary historians do not have to establish the definition of literary history as an assumption. Readers read the described literary history and find it out. (5) The aim of literary history must be identical with the method of describing it (6) The division of periods being the assumption which literary historians establish, it has only to be adequate to the method of description. The variety of it may bring about that of literary history. (7) Literary history must own a structure the whole of which has a unified view of history. If divided into parts, it will only be an introduction for conveying knowledge, not literary history with a view of history. Though nine volumes on literary history were published in between 1922 and 1976, They are net qualified to form the tradition of our literary history. In other words, the figure of our literary history of being patrified. The culture with various kinds of literary history means that which has various methods of describing it, and the variety of method means that introduction of subsidiary learning when we, literary historians, view our literature synthetically by accumulating a vast knowledge of history, philosophy, art and science, we can not only have a view of history, but descrive our literary history as a unified structure.

대전시 노은 도매시장 채소류의 농약 잔류 실태 및 식이섭취량 추정

한국탁,이규승,이은경,이용재,고광용,원동준,이정원,권순덕 한국환경농학회 2003 한국환경농학회지 Vol.22 No.3

대전시 노은 도매시장에서 채취한 6종의 채소류 중 농약잔류량을 조사한 후 이에 대한 위해성 평가를 실시하였다. 전체 100건의 분석시료 중 농약이 검출된 시료의 비율은 46.0%이었고, 잔류허용기준 초과비율은 6.0% 이었다. 검출비율이 높은 시료는 상추(85.0%), 깻잎(80.0%), 오이(60.0%) 순이었고, 상추 3건, 깻잎 3건이 허용기준을 초과하였다. 살균제는 dicar-boximide계, 유기염소계, azole계 농약, 살충제는 유기인계, 합성 pyrethroid계 농약이 많이 검출되었다. 검출빈도가 높은 성분은 procymidone, chlorpyrifos, chlorothalonil, cypermethrin, EPN의 순이었다. 위해성을 평가하기 위해서 각 농작물에 대한 농약의 추정 섭취량과 ADI를 비교한 결과, 허용기준을 초과한 깻잎의 bitertanol, triflumizole, iprobenphos가 다른 성분에 비하여 높은 비율을 보였다. 그러나 각 농산물의 식이섭취량이 적어 ADI에 대한 추정섭취량의 비율이 0.46%이하로 나타나 그 영향이 매우 낮은 것으로 판단되었다. Pesticide residues in some vegetables collected at Noeun wholesale market in Daejeon were surveyed and assessed their risk In 100 samples, the detection rate of pesticide was 46.0% and the rate exceed MRL was 6.0%. Commodities showing high detection rate were lettuce(85.0%), perilla leaf(80.0%) and cucumber(60.0%). Dicarboximide, organochlorine, and azole fungicides and organophosphorus and pyrethroid insecticides were detected. Detection frequency of pesticide was in the order of procymidone, chlorpyrifos, chlerothalonil, cypermethrin and EPN. When the estimated intake amount of the pesticides were compared with ADI to assess their risk, bitertanol, triflumizole and iprobenphos in perilla leaf were higher rate than the other vegetables. However the total amounts of intake of pesticides were estimated to less than 0.46% of ADI.

한국 대학생의 웰니스에 대한 생활양식 연구

김상국,가경환,이광욱 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

The purpose of this study was to find out wellness lifestyle of university students in Korea. The subject were 500 students of University(287 male and 217 female ) in Incheon and Seoul. The instruments used for this study were a survey of wellness lifestyle Inventory(55 items). The results obtained from independent group t-test and one way analysis of variance(ANOVA) showed that the wellness lifestyle of University students had the highest health index in the domain of spiritual, emotional, intellectual health domain, whereas they showed the lowest health index in the domain of physical and social health domain. The results of this research also showed that there was a statistically significant difference wellness lifestyle in the domains of spiritual, emotional, intellectual, physical, social health according to sex, region, grade, religion(p<.05).

개의 腎臟機能에 미치는 側腦室內 Prostaglandin A₂의 影響

高光厚,鞠永棕 全南大醫大 1979 전남의대학술지 Vol.16 No.2

모 연취급 사업장에서의 산업보건사업이 근로자 건강 증진에 미치는 효과

이병국,안규동,이광묵 가톨릭 대학 산업의학 쎈타 산업의학연구소 1987 韓國의 産業醫學 Vol.26 No.3

For the purpose of investigation the effect of occupational health service in terms of environmental control and health provision of workers on the improvement of worker's health, authors analysed the data of environmental measurement and health check-up of one lead using industry who started his investment to environmental improvement from 1980. Six hundred million won was invested for environmental improvement form 1980 to 1986. This in vestment brought about apparent improvement of workin g conditions of all of the workplaces from mean concentration of lead in air over 0.15mg/m₃in 1981 to mean concentration of lead in air less than 0.15mg/m₃. Environmental control reduced mean blood lead level from 51.2±11.5ug/di in 1983 to 39.2±16.0ug/dl in 1986, and delta-aminolevulinic acid concentration 3.15±2.1mg/l in 1982 to 1.96±1.7mg/l in 1986, respectively. Blood ZPP levels were decreased from 76.1±58.9ug/dl in 1983 to 42.23±30.3ug/dl in 1986. If 150ug/dl of blood ZPP is considered as unacceptable limit of lead intoxication, more than 10percent of workers belinged to this category in 1983, but only 0.5 of workers showed their blood ZPP level over the 150ug/dl in 1986. It was observed that no workers whose work duration were less than one year showed their blood ZPP level over 100ug/dl, but there were high percentages of lead workers with high blood ZPP(over 150ug/dl) who were working in uncontrolled had working condition and whose work duration were less than one year.

이차 전기영동을 이용한 프로테오믹 접근을 통한 정맥 압박이 혈장 프로테옴에 미치는 영향

양광익,박선아,오형근,정두신,박형국,성기범,안무영,홍세용 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

The human proteomics-based approaches, which examine the expressed proteins of a tissue or cell type, are increasingly being used. Venous occlusion is commonly employed for stimulating tissue-plasminogen activator (t-PA) and plasminogen activator inhibitor-1 (PAI-l) release from venous endothelial cells, and this has been regarded as a parameter of the individual fibrinolytic capacity of plasma. The present work involved a detailed investigation of the plasma proteome and fibrinolytic activity in normal subjects, with the aim of determining whether correlations exist between various parameters of the fibhnolytic system before and after venous occlusion. We analyzed fibhnolytic parameters and plasma proteome before and after 15-min periods of venous occlusion in the forearm in 10 healthy 3rd-decade volunteers. Proteome analysis was performed using two-dimensional gels. The tryptic digests of some proteins were confirmed by MALDI-TOF and the MS-Fit algorithm. The fibrinolytic response as measured by the absolute amount of t-PA after venous occlusion was increased by venous occlusion (5.5 vs 9.6 ng/㎗, p<0.05), as was PAI-l (46.8 vs 56.1 ng/㎗, p<0.05). However, two-dimensional electrophoresis finding was virtually nonspecific and inconsistent after venous occlusion in healthy male subjects. Venous occlusion does not influence plasma proteome in healthy males. Although the fibhnolytic response to venous occlusion is attributed to an increase in free tUPA antigen, this change is not correlated with plasma proteome.

정보화근로사업으로 인한 관련산업의 고용유발효과 분석 : 산업연관분석 (Input-Output Analysis)기법의 적용 An Application of the Input-Output Analysis

박광국,주효진,최병기 한국정책학회 2002 韓國政策學會報 Vol.11 No.3

본 연구는 정보화근로사업으로 인한 관련산업의 고용유발효과가 어느 정도인가를 알아보기 위해 산업연관분석(I/O) 기법을 적용하여 그 효과를 추정하였다. 이를 위해 1998년부터 2000년까지 한국전산원에 정보화근로사업 예산지출내역서를 보고한 7개 중앙행정기관(행정자치부. 외교통상부, 건설교통부, 보건복지부. 법제처, 대검찰청, 기상청)을 대상으로 하였으며, 정확한 추정을 위해 한국은행에서 1998년을 기준으로 작성하여 2001년 7월에 발간한 산업연관표(인장표)를 이용하였다. 산업연관분석을 위해 먼저 정보화근로사업의 예산지출내역을 정보화기반조성 예산지출부분과 인건비 지출부분으로 구분한 다음 각 부문별 예산지출내역을 산업연관표의 분류기준에 맞추어 재분류하였다. 또한 산업연관분석에 필요한 산업부문별 생산유발계수와 고용유발계수를 도출하였다. 분석결과, 정보화기반조성 예산지출로 인해 45,999명의 고용유발효과가 있었으며. 인건비 예산지출로 인해 2,020명의 고용유발효과가 있는 것으로 나타났다. 따라서 전체적으로 정보화근로사업으로 1998년부터 2000년까지 약 307억원의 예산지출을 통해 약 48.019명의 고용유발효과가 관련산업에서 발생한 것으로 추정되었다. The purpose of this study is to estimate employment induced effects produced by the IT New Deal by introducing the method of the input-output analysis. The seven central governmental agencies were sampled because they reported the whole budget data related to the IT New Deal from 1998 to 2000. For the elaborate estimate, the 「1998 Input-Output Table: Extended Version」 released by the Bank of Korea on July, 2001 was used. The analysis was conducted according to the following steps. First, the budget outlays of the IT New Deal Program were reconstructed based on the classification system of the input-output table. Second, the coefficients of production and employment induced by the industrial sector were drawn in order to estimate the whole effects resulting from the IT New Deal. The analytic results showed that employment induced effect of 45,999 persons was estimated with the budget expenditure invested in purchasing infrastructure equipments and employment induced effect of 2,020 persons was produced with the budget expenditure used in hiring manpower for the IT New Deal.

C++를 이용한 통신 시뮬레이터의 설계 및 구현

이광휘,정상국,안정희,김한경,이종근 國立 昌原大學校 精報通信硏究所 1998 精報通信論文集 Vol.2 No.-

In this paper, we are designed and implemented communication simulator, for two systems which communicates in peer-to-peer and simulating for protocol, to verify the interwork not yet designed system Peerl and now being operated Peer2. To begin with, after the investigation in Interworking Standard in Interface Control Document and check the satisfied requirements in each system, the environment of simulator is set up. We examine Interworking Standard in FSM representation. And in protocol design, partial steps follows necessary procedure of protocol engineering. Simulator is implemented in C++ and, to interwork two systems smoothly, the whole system will be merged. Finally, a design and implementation of simulator is completed by confirming simulation results of simulator and Interworking Standard coincide.