http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김선욱,김봉진,Kim, Sun-Uk,Gim, Bong-Jin 대한산업공학회 1998 산업공학 Vol.11 No.2
As mentioned in Part I all groupware products have been categorized into three areas which include cooperation/document management systems(CMS), collaborative writing systems(CWS), and decision-making/meeting system(DMS). This study deals with a comparative analysis of the last two areas, which is added to the first. It turns out that DMS has a higher market share than CWS. However. since effective collaboration requires the functions inherent to these two systems. they should be integrated somehow. The systems' functions that have been implemented in response to design issues have been described. Each group of the functions has been divided into three parts which consist of basic function, quasi-basic function. and others. Such a decision has been made according to the frequency rate of the functions provided in the products. While the basic functions in CWS include collaboraive writing beyond restriction of time and place, group awareness. version control. and others, in DMS realtime collaboration. brainstorming. presentation. various task support. policy formation. document management, multimedia, subgroup communication. topic commenter, categorizer, screen capture and various rile transfer. The basic functions are merged into the integrated functional model which was proposed in Part I. Since the model is so flexible that it can partially include the quasi-functions in addition to the hasic functions. a large number of products may stem from the modification of the functional model.
양문희(Yang, Moon-Hee),김봉진(Gim, Bong-Jin),김종욱(Kim, Jong-Wook) 한국신재생에너지학회 2005 신재생에너지 Vol.1 No.3
This paper deals with the economic feasibility model and analysis of a hydrogen fuel-cell vehicle [FCV] against two similar types of non-business vehicles fueled with gasoline [GV] and diesel [DV] considering greenhouse gas [GHG]. Considering the price of vehicles and annual operating cost, we build a classical economic feasibility model. Since the economic feasibility could be affected by many input factors such as the prices of vehicles, the price of fuels, annual driving distance and so on, we estimate the average future values of input factors, which is defined as the average case. Based on the average case, we assess the representative economic feasibility of a FCV with/without GHG, and by changing various annual driving distances, we assess its economy in terms of net-present value, internal rate of return, and payback period. In addition, we make some sensitivity analysis of its economic feasibility by changing the values of the critical input factors one at time. Based on the average case, it turns out that the consumer of a FCV could save 25,000 won/year for a GV, but the consumer could pay 120,000 won/year more for a DV. This indicates that gasoline vehicles could be replaced gradually by FCVs in Korean market which might be formed by those consumers driving annually more than approximately 14,800 km. As the results of our sensitivity analysis, it turns out that a FCV is no more economical if the difference of the prices between FCV and GV is more than 10,130,000 won or the price of hydrogen fuel could be more than 5,136 won/kg.
하수 슬러지 폐열원을 이용한 재생 에너지의 경제성 평가
이종호(Jong Ho Lee),박승상(Shung Sang Park),백종현(Jong Hyeon Peck),이수양(Soo Yang Lee),김봉진(Bong Jin Gim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
In this study, economic evaluation of the waste heat recovery system combined with heat exchanger and the high temperature heat pump was suggested and investigated. It was designed that the system used the heat of wastewater from sludge-drying process. Based on the annual heat production of the system, bunker-C oil boiler and LNG boiler of the same capacity are compared, respectively. As a result, when the system operates for 15 years, payback period of this system predicts about 2.6~3.2 years in bunker-C oil boiler and about 2.7~3.4 years in LNG boiler, respectively.
제약 회귀하의 목표계획법을 이용한 국내 천연가스 산업의 규모와 경제성 분석 : Economies of Scale for the Korean Natural Gas Industry
김봉진,윤희천,이정동,김태유 한국경영과학회 1997 經營 科學 Vol.14 No.1
We consider a problem of estimating the economies of scale for the natural gas industries. The goal programming/constrained regression is employed for estimating the economies of scale for the natural gas industry, and the problem is formulated as a linear programming problem. Also, the translog cost function is used to represent the cost structure for the natural gas industry. The Korean Gas Corporation was selected as a case study, and we demonstrate that the suggested goal programming/constrained regression approach is appropriate for estimating the economies of scale for the Korean natural gas industry.
두 개의 동일한 소화조로 이루어진 메탄가스 생산체계의 경제적 운영에 관한 연구
김봉진 한국경영과학회 1990 韓國經營科學會誌 Vol.15 No.1
Biomass to methane production is a good supply method of substitutable energy resources. The economic viability of these systems depends a great deal on cost effective production methods and facilities. The operational problem is to determine the time to allocate to each batch of several feedstocks for each digester and to determine the number of batches for each digester so as to maximize biogas production for two identical digesters over a fixed planning horizon. This paper provides an efficient approximation procedure which is based on the decomposition of the problem and the analysis of incremental gas production function for each feedstock. The computational experience for the heuristic procedure was also reported.