선형계획기법(Linear Programming)에 관한 연구

고충석,이병철 제주대학교 1986 논문집 Vol.16 No.1

One of the most fundamental of the decisions a public administrator must make is the determination of how scarce resources should be allocated to competing activities. These scarce resources may be budgeted dollars, land for housing, manpower, equipment, or any other factor over which the administrator exercises control. Linear programming is concerned with the basic problem of the allocation of scarce resources. The purpose of this paper is to point out the problems and the major issues which are intimately related to apply Linear programming to real policy problem situation in the past and present in order to provide an effective and efficient framework, rather than to attempt any specific policy prescriptions and testing hypothetical propositions. Several other studies have used Linear programming to test hypothetical propositions and specific policy prescriptions. These studies have had unique analytic viewpoints and perspectives. They helped to improve Linear programming. Therefore, according to unique analytic viewpoint, this paper examines the role of quantitative analyses in public administration and decision making. Throughout this presentations several key features of the palper should be noted. First, this paper is tried to introduce the concepts of Linear programming as they relate to public administration. Second, the evaluation of quantitative analyses will be examined in light of the different levels of decisions a public administrator must make. Third, it is oriented toward the scientific method of problem solving and expands the steps involved in public problem solving. The final feature of the paper that should be noted is that each discussion of a model presents an analysis of how the model should be developed, a discussion of specific public oriented case studies(example problems), and an analysis of the potential/shortcomings of Linear programming model in public administration. The methodology adopted is based on the literature-survey. A review of the literature on Linear programming revealed a substantial methodologicall-especialy, hypothetical assumptions-shortcomings. These shortcomings are following as ; 1. Linearity 2. Additivity 3. Divisibility 4. Finiteness 5 Certainty and Static time period 6. Non-monetary performance ignorance For solving these shortcomings, this paper presents some ideas. A major conclusion is that Linear programming has varied according to the specific situations of policy pattern that were involved. Therefore, Linear programming application must flexibly consider the real specific policy situations. If this assumption is accepted, we think, The future of Linear programming application is very optimistic.

正常 Rat에서의 蔗糖經口投與에 依한 高血糖症에 미치는 대추나무 葉 抽出物의 影響

고현철,서대규,김병수,강주섭 漢陽大學校 環境科學硏究所 1994 環境科學論文集 Vol.15 No.-

대추나무의 열매는 漢方에서 여러方面에 廣範이 利用되고 있으나 그 잎은 利用되지 않고 있으나 이 잎에는 甘味受容抑制用과 糖의 腸에서의 吸收抑制作用을 가지는 成分이 含有되어 있음이 밝혀져 糖吸收抑制物質로서의 開發의 對象이 될 수 있을 것이다. Insulin??乏等으로 因하여 耐糖能에 異常이 있는 疾患에서는 糖吸收을 抑制함으로 腸管에서의 急擊한 大量의 糖의 吸收를 事前에 防上시켜 Insulin分泌細胞에 대한 負荷를 輕減시켜 줄 수 있는 것임으로 대추나무 葉 抽出物이 糖吸收抑制作用이 있는지를 確認코져 蔗糖負荷動物에서의 血糖値 上昇反應에 미치는 대추나무 葉 抽出物이 作用을 檢討하여 다음과 같은 成績을 얻을 수 있었다. 1. 대추나무 葉 抽出物이 負荷된 蔗糖量의 1/10에 該當되는 比較的 少量에서는 蔗糖負荷에 依한 血糖値上昇作用을 抑制할 수 없었다. 2. 比較的 大量 卽 蔗糖負荷量의 3/10에 該當되는 用量에서는 대추나무 葉 抽出物이 蔗糖負荷에 依한 血糖値上昇을 有意하게 抑制하였다. 以上의 結果로 미루어 보아 대추나무 葉 抽出物은 糖攝取에 의한 血糖値上昇反應을 억제하여 비만과 당뇨병치료에 이용될 수 있을 것으로 사료된다. The fruits of the Ziziphus jujuba have been to use an application in the various ways of chinese medicine and the leaves of this plant have been not to use for this purpose. But, It was pointed out that leaves of the Ziziphus jujuba contain the ingredients of inhibitory action in sweet taste reception of the tongue and intestinal absorption of glucose. Therefore, it is done to developing substance as inhibitory substance of intestinal glucose absorption. The patients with glucose intolerance because of insulin deficiency have a condition of a sudden intestinal glucose absorption. For this reason, the suppression of the sudden glucose absorption alleviate loads of insulin secretion of pancreatic islet cell. In this study, the author have the purpose which confirms the effect of EZJ to intestinal glucose absorption by sugar intake with this substance, that is, levels of blood glucose after sucrose in dose of 6g/kg of body with EZJ in dose of 0.6g/kg of weight were determined to investigate the effect of EZJ on the elevation of blood glucose levels with sugar intake in normal rats. After an overnight fasting, sucrose solution was given orally to the control group. Experimental groups were divided into single EZJ, Triple EZJ, EZJ administered at 2 hours and 1 hours before sucrose and another one with sucrose. Blood glucose levels were determined with Glucoscott at just before and 15, 30, 60, 90 and 120 minutes after sucrose adminstration. The results were as follow : 1. The relative small amounts of EZJ in does of a tenth of sucrose loading dose was not suppressed the elevation of blood glucose levels with oral sugar intake. 2. The relative large amounts of EZJ in does of three tenth of sucrose loading dose was significantly suppressed the elevation of blood glucose levels with oral sugar intake. Presnt results suggest thae EZJ has a suppressive effect on raising blood glucose levels after oral sucrose administration. This fact would be the advantage of EZJ in an application to the therapy or prevention of dabetes mellitus and obesity.

모래쥐의 양측 목동맥차단에 의한 전뇌허혈이 대뇌겉질 혈관의 미세순환에 미치는 영향

고운산,황성희,이병철 대한신경과학회 1998 대한신경과학회지 Vol.16 No.5

실시간 시스템인 승강기 제어기 프로그램 개발

최병욱,임계영,고경철 제어·자동화·시스템공학회 1999 제어·자동화·시스템공학논문지 Vol.5 No.5

This paper discusses a real time multi-tasking system model and a development environment for an elevator control system. Recently, as the elevator systems become large-scaled and operate with high speed, there are lots of software tasks to be processed with time constraints. Thus, the control systems are designed with distributed control structure and characteristics of typical real time systems. For structural design of such real time system, we introduce a multi-tasking model based on a real time operating system model and an software development environment based on virtual prototyping which simulates real system operation in the cross development environment. The developed system model and the development environment are successfully applied to development of a new elevator system with distributed control structure and its system reliability can be verified through numerous field tests.

재발성 류마티즘 환자에서 발작의 유발인자

주유철,이동민,양종태,신병철,임태영,서정균,정기영,최동헌,김원,조영신,고희관 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2

Background and Objectives : Palindromic rheumatism (PR) is known to be triggered without any obviously inciting events in most patients, although, in a few cases, attacks have been noted to relate to another events such as weather change, childbirth, ingestion of certain foods, or over-exercise. The aim of this study was to characterize the triggering factors on palindromic attacks. Materials and Methods : We evaluated sixty-four patients with PR for the presence of triggering factors and the relationship between attacks and triggering factors by interview of patients. We considered that there was an probable association between episodes and PR, if episodes within 24 hours prior to PR had triggered at least 50% of all attacks and a definite association between episodes and PR, if episodes within 24 hours prior to PR had triggered 100% of all attacks. Results : In 15 patients (35.9%), there was a possible association between episodes of PR and initiating events. In 8 patients (12.5%), there was a definite association between episodes of PR and initiating events. The triggering factors were physical over-activity including exercise (19/64: 29.7%), foods, such as rawfish, crab, and chicken, including alcohol (19/96: 19.8%). However, there were no difference between the groups with and without the triggering factor in sex ratio, duration and onset of PR, the positive rate of rheumatoid factor and involved sites. Conclusion : Our observations showed that PR was triggered by physical over-activity more than in previous reports and hypersensitivity to foods was a causative factor in some patients with PR. However, patients with triggering factors had a similiar clinical profile to patients without triggering factors.

전신성 홍반성 루푸스 환자에서 병발된 Coxsackievirus B3 심근염 1예

송봉근,임병관,김민형,신성철,정재홍,김동희,김정환,박건우,고은미,전은석 대한순환기학회 2003 Korean Circulation Journal Vol.33 No.12

악성 임파종 임파절의 치료에 대한 전산화 단층 촬영상의 변화

함창곡,조온구,임현철,고병희,김성태,김선미 한양대학교 의과대학 1994 한양의대 학술지 Vol.14 No.1

Thrity one lymph njodes in thirty follow-up CT studies in 9 patients with a diagnosis of malignant lymphoma were reviewed to determine the efficacy of CT studies for determining response of the therapy. In these 9 patients, CT findings are subdivided to 5 groups by the gross appearances of lymph nodes; (a)complete disappear, (b)multiple strands, (c)decreasd size without changes in internal characteristics, (d)decreased size with central low density, (e)increased size. Clinical correlation preceding the follow-up CT examination was obtained and it's correlation was very excellent. The group (a) to (d)were matched with good clinical course and group (e)was matched with poor clinical course. The appearances of the lymph nodes were not correlated with the histologic cell types and methods of therapy. The CT examination is satisfactory in the post-therapy follow-up of lymphoma patients.

위절제술 후 Carboxy-Methylcellulose를 이용한 위장관 조영술

오재천,김용수,문원진,임현철,고병희,조온구 한양대학교 의과대학 1997 한양의대 학술지 Vol.17 No.1

The purpose of this study was to determine the usefluness of the UGI study with Carboxy-Methylcellulose (CMC) and 140% barium in the patient undergone gastrectomy We reviewed the UGI study with effervescent agent and barium and the UGI study with CMC and 140% barium of twenty one patients, undergone gastrectomy (Billroth-Ⅱ:12, Billroth-Ⅰ:4 total gastrectomy:5). The average interval between these studies was 19 months. The coating quality of the remnant stomach, anastomosis sit e, jejunum and proximal ileum in two studies were compared. The maximum luminal diameter of the same site and the maximum distance between a adjacent valvulae conniventes were measured for evaluating the distensibility of these studies. Compared with the coating quality of the remnant stomach, the UGI study with effervescent agent and barium was superior to the UGI study with C MC and barium in 68% (11/16) patients. The difference of coating quality between these studies was marginal in the anastomosis site and jejunum. The UGI study with CMC and barium provided a better coating quality in the proximal ileum of 95%(20/21). The maximum luminal diameter of the anastomosis site, jejunum and proximal ileum was respectively 2.75cm, 3.36cm, and 2.82cm inthe UGI study with effervescent agent and barium, 3.2cm 3.35cm, and 3.40cm in the UGI study with CMC and barium(p〈0.01). The maximum distance between a adjacent valvulae conniventes of the jejunum and proximal ileum was respectively 0.61cm and 0.51cm in the UGI study with effervesent agent and barium, 0.74cm and 0.72cm in the UBI study with CMC and barium (p〈0.05). Compared with the distensibility, the UGI study with CMC and barium was superior. The UGI study with CMC and barium in subjects, undergone gastectomy, showed the advantage the mucosa distal to anastomosis site except for the remnant stomach and must be supply the more information in finding lesion such as adhesion and peritoneal dissemination.

North Korean Communism: Past and Present

KOH Byung Chul 신아시아연구소(구 신아세아질서연구회) 2003 신아세아 Vol.10 No.2

Part 1. The Summit of June 2000 and Inter-Korean Cooperation : Approaches To National Reunification by the Two Koreas

( Byung Chul Koh ) 경남대학교 극동문제연구소 2002 The Korean Peninsula in Transition : The Summit an Vol.- No.-