체적판매에 대비한 LPG GAS REGULATOR 개발 연구

고순옥 경남대학교 경남지역문제연구원 1999 연구원 논집 Vol.5 No.-

공해가 없고 사용이 편리하고 GAS는 현재 전체인구의 97 2%에 해당하는 1,415만 가구가 사용하고 있으며 GAS소비 또한 매년 19%이상의 높은 신장을 보이고 있다 그러나 전량수입하는 GAS는 한편으로 편리한 반면 그 관리나 사용상에 있어서 잘못관리 하여 많은 안전사고와 재산상의 손실을 초래할 수 있는 양면성을 지니게 되었다 그리하여 정부는 98년말부터 가스의 원활한 공급과 불필요한 낭비 및 안전사고 예방을위해 오는 2000년 말까지 LP GAS의 체적 판매제도를 시행하고자 한다 하지만 국내의 현실은 시장변화에 대하여 능동적 대처하지 못하고 체적판매에 필요한 10kg GAS REGULATOR의 개발이 전무한 관제로 전량 외국에서 수입대체할 환경에 처하는 안타까운 현실에 직면하기 때문에 본 연구개발의 목적은 GAS REGULATOR의 기능적 기술 문제는 우선 국내의 기술로도 해결 되었기 때문에 디자인적 측면에서 고려 되어야 할 사항인 심미적 조형성, 기능성에 접근하여 빠른 시일내에 국내에서 제품의 시장성우위확보를 할 수 있도록 하고자 한다. Gas is an environment-firendly, easy-to use energy source currently used by 97 2% of the population or 14 15 million households and its demand is increasing annually at a rate of over 19% however, while it is easy to use, gas is 100% imported and misuse can lead to various hazards and loss of poperty The government is planning to introduce a " Gas Sale by Volume System"rom the end of 1998 until the end of 2000, to pormote its efficient supply and prevent unnecessary waste and safety hazards However Korea has not been able to successfully adjust to market changes and there is no research in progress aimed at developing a 10kg Gas Regulator which is necessary for a sale by-volume system Hence, Korea has no choice but to depend on imports There fore, after the rechnical problems are solved the object of our study is to design a shape which is aesthetically pleasing while possessing special features there by creating a design that will cominate the domestic market

사람의 혈관 내피세포에 대한 Rickettsia typhi의 감염

안욱수,이강순,송호연 순천향대학교 1994 논문집 Vol.17 No.4

R. typhi, the etiologic agent of murine typhus, has known to cause fever, headache, maculopapular rash and vasculitis of small blood vessel. The skin rash and vasculitis are thought to be the results of endothelial cell injury from the infection with R. typhi in vivo. R. typhi showed ability to cause cellular injury of cultured human endothelial cells. The endothelial cells used in this experiment wee obtained by collagenase treatment of human umbilical cord veins. These cells were conformed to be endothelial cell by the presence of von Willebrand factor through the immunofluorescent antibody technique and Weibel-Palade bodies under the electron microscopy. Ultrastructural study revealed that there were no evidences of entry and/or escape from endothelial cells of R. typhi in 24 hours through 48 hours after infection. On the contrary, numerous particles implicating R. typhi were observed in large vacuole within endothelial cells at 48 hours after inoculations. Estimating the severe injury of endothelial cells by infection of R. typhi, the endothelial cells seems to be the primary target cells in human disease caused by R. typhi infection.

Chrysanthemun frutescens L. 의 開花에 關한 硏究

洪淳聲,許洪旭 釜山大學校 師範大學 1979 교사교육연구 Vol.6 No.2

This study was carried out to examine the effects of day length on the flowering in Chrysanthemum frutescens L. The results obtained were as follows; 1) The elongation of stem was accelerated in the long day group and represented extreme inferiority in the short day group. 2) In the long day group, it is shown that a long interenode of stem and a deep lobation of leaf were affected as the morphological change. 3) The differentiation of flower bud was accelerated in the long day group.

계층적 평가요인 구조에서 요인 가중치 산정과 척도변환 방법에 관한 연구

홍순욱 永同大學校 1998 硏究論叢 Vol.4 No.1

평가요인에 대한 가중치 산정방법과 평가척도의 구성은 불확실성이 큰 대규모 프로젝트의 평가에 있어서 중요한 문제이다. 평가과정은 통상적으로 평가요인의 계층적 구조를 갖고 시작된다. 본 연구의 목적은 무차별곡선에 근거한 가중치 부여방법과 순위척도를 비율척도로 변환하는 척도변환 방법을 개발하는 것이다. 이를 위하여 중요도, 부족도, 그리고 프로젝트의 효과를 벡터공간에서 고려하는 세 가지의 새로운 개념을 도입한다. 이를 사용하여 본 연구에서 새로운 가중치 부여의 설정구조를 제안한다. 또한 변수변환법을 사용하여 어떻게 순위척도가 비율척도로 변환될 수 있는가를 보인다. 본 연구의 결과를 응용한다면, 프로젝트 평가에 있어서 가중치 부여와 척도화의 문제를 적은 비용으로, 보다 간단하고 실용적으로 취급될 수 있을 것이다. How to weigh factors and how to construct scales are of importance in evaluating large-scaled projects that involve high uncertainty. An evaluation process usually begins with a hierarchical structure of evaluation factors. The purposes of this study are to develop a weighting method based on indifference curves, and to propose a scale transformation method that converts ordinal scales into ration scales. Theoretically, we introduce three new concepts: The degree of importance, the degree of insufficiency, and a vector space for the effect of a project. Based on these concepts, a new weighting method is proposed. We also employ a mathematical technique to illustrate how ordinal scales can be transformed into ratio scales. In short, this paper implies that we can deal with the two major problems of weighting and scaling in project evaluation more simply and practically at the lower cost in industrial circumstances.

열역학 실험식에 의한 Cd-Zn계의 안정 및 준안정 상태도의 계산

崔舜惇,權海旭,金星秀 嶺南大學校 工業技術硏究所 1986 연구보고 Vol.14 No.2

For quantitative predictions of the metastable features and the compact expression of phase equilibria encountered in the extractive metallurgy of cadmium and zine, the calculations of stable and metastable equilibrium diagrams of the Cd-Zn system are made using the four parameter subregular solution model. Parameters of the thermodynamic functions are derived from the phase diagram data of "Bulletin of Alloy Phase Diagrams" and the enthalpy data of Wittig and Kleppa. Stable equilibrium diagram and thermodynamic quantities re-calculated from the optimized parameters agree with all the experimental data within the errors. Such metastable phase equilibria as the chemical spinodals, the locus of compositions and temperature where the Gibbs energies of the liquid and solid are equal(To), the metastable extensions of the solidus and liquidus curves, and metastable miscibility gaps. Excellent agreement of the calculated solvus boundary data with the experimental data is believed to provide a correct expectation of the metastable phase equilibria.

야간 근무시의 혈장 멜라토닌의 농도변화 : 시계 방향과 반시계 방향의 교대근무 비교 Comparison of the Clockwise and Counterclockwise Rotational Shift

민순,김미승,임욱빈 대한기초간호자연과학회 2000 Journal of korean biological nursing science Vol.2 No.2

To determine the optimal rotational shift system, the effect of the direction of the rotational work shifting on the nocturnal rhythm of plasma melatonin were investigated in nursing students. Two groups of nine volunteers participated as experimental subjects, and two nursing students participated as a control group. The directions of the rotational work shift were as follows : CW(clockwise)-shift were rotated in the direction of day shift(3 days), evening shift(3 days), off duty(1 day) and night shift(5 days), and CCW(counterclockwise)-shift were done in the reverse direction. Plasma melatonin concentrations was measured by radioimmunoassay. The results were as follows : The plasma melatonin levels were kept low at night and in the following morning in the CW night shift workers, whereas the level started to increase at 05 : 00 hr in two workers of four CCW shift workers. These result suggests that the shift rotation in the CW direction is more acceptable in terms of the adaptation of hormonal rhythms. These results indicate that the CCW rotation of shift work is somewhat better than CCW rotation for the adaptation to shift work on hormonal aspects in nurses.

원격조작을 위한 로봇 그래픽 시뮬레이터 개발

홍순혁,전재욱 成均館大學校 科學技術硏究所 2000 論文集 Vol.51 No.1

Robot simulators have been used for the design, analysis, and control of robot systems. Robot simulator have many features such as system modeling, 3D graphic display of model, graphical robot teaching, and off-line programming. In this paper, a robot simulator is proposed which has basic features of robot simulators and some other features to support remote operation. The proposed robot simulator can be used to operate robots in real workplace by using off-line or online simulation and to make human operators learn the operations of robots. In particular, the proposed robot simulator supports a network client/server model for remote operations of robots. By using this feature, human operators can connect his computer system to the server system and control a real robot. The server system has a vision camera to transmit the image of working robots as feedback data to human operators.

신제품개발 프로젝트의 개발단계별 정보획득패턴의 구조

홍순욱 永同工科大學校 1995 硏究論叢 Vol.1 No.1

본 연구의 목적은 신제품개발 프로젝트에 있어서 정보획득 패턴의 구조를 밝혀 보려는 것으로서 정보의 유형, 획득경로 및 원천이 신제품개발단계, 프로젝트의 혁신성 및 성공의 정도에 따라 정보획득 패턴이 다를 것이라는 연구가설이 문헌조사를 통하여 제기된다. 이를 실증조사 하고자 국내 전기전자 산업에서 수행되었던 45개 신제품개발 프로젝트를 대상으로 자료를 수집, 분석하였다. 그 결과 본 연구에서 얻은 성과는 다음과 같다. (1) 국내의 경우 신제품개발 전체 과정에서 마케팅정보가 가장 중시되며 이는 외국의 연구결과와 일치된다. (2) 정보획득은 비공식경로와 외부원천에서 점차 공식경로와 내부원천 쪽으로 그 패턴이 달라진다. (3) 개발초기단계에서 외부원천, 비공식경로를 통하여 프로젝트에 필요한 정보를 얻으며, 후기단계에서는 그 반대의 경향을 보이고 있다. (4) 혁신적인 프로젝트일수록 개발초기 및 중기단계에서 외부원천과 공식경로를 통하여 정보를 획득하며, 성공적인 프로젝트일수록 내부원천과 공식경로의 비중이 높다는 사실이 밝혀졌다. The purpose of this paper is to explore the internal structure of underlying information acquisition patterns in new product development(NPD) projects. In order to achieve the objective, three standpoints are established in this study: (1) The patterns are different according to stages. (2) The patterns are also different by the degree of innovativeness and/or success of the NPD project. (3) The determinants of the patterns are types, channels and sources of information. Based on the research questions derived from the existing literature, a set of hypotheses is developed and tested with the empirical data collected through questionnaires from the electrical and electronics industry in Korea. Main results are as follows: (1) Marketing information is found to be the most important throughout the stages. (2) The channels and the sources of information gradually become to be formal and internal from informal and external respectively as the NPD projects proceed. (3) The NPD Projects are likely to get information by informal channels from external sources at its early stage, while by formal channels from internal sources at its late stage. (4) The more innovative projects are more likely to get information by formal channels from internal sources at early and mid-term stage, and from external source at late stage than the less innovative projects. The more successful projects are more likely to get information by formal channels from internal sources in all stages than the less successful projects.

창상 치유에 있어서 메피텔 (Mepitel)??의 효과에 대한 임상적 연구

이승욱,양순재,김용배 순천향대학교 1994 논문집 Vol.17 No.4

The wound healing is one of the oldest concerns of the medical profession. Local wound care in the cutaneous injury, burns, split thickness graft and donor site has been the long standing problem. In a superficial wound, the healing is accomplishied by reepithelialization and migration of epithelial cells which originate from the intact epithelium that surround the wound and from the undestroyed portion of epidermal appendages (hair follicles, sebaceous glands, and sweat glands) within the wound. Dressing materials for superficial wounds should ideally meet the following requirements. As mechanical displacement of the dressing material from the wound bed is impossible it must allow drainage of serous wound exudate and hematoma, and also allow antibacterial solutions to reach the wound. At the time of removal, the dressing should not adhere to the graft and open areas of the wound. For years, fine mesh gauze, vaseline gauze has been the main dressing materials for the cutaneous injuries in our hospital. But, recently we have used a new dressing materials, Mepitel?? which consists of a polyamide net, impregnated with a silicone gel. It has an open structure with 14 pores/cm² each with a diameter of 1.2mm. The advangtage of the material are ease of use, non-adhesion to the wound, very good tolerance, and abscence of pain during dressing changes. This product has been used in our hospital and this paper serves as a report on our early experiences with it.

Type Ⅳ 과지질혈증에서 나타난 다발성 건 황색종 : 1례 보고 One Case Report

천동욱,김홍태,박봉훈,변영수,홍순만,손경락,문세광 최신의학사 1992 最新醫學 Vol.35 No.10