• Title/Summary/Keyword: Long Term Operation

Search Result 1,462, Processing Time 0.03 seconds

A Study on the Evaluation of Strategic Plan of Academic Libraries - Focused on the Cases of National University Libraries in Korea - (대학도서관 전략적 계획의 평가에 대한 연구 - 국내 국립대학교 도서관 사례를 중심으로 -)

  • Lee, Yong-Jae
    • Journal of Korean Library and Information Science Society
    • /
    • v.46 no.4
    • /
    • pp.551-574
    • /
    • 2015
  • This study analysed the long-term plans of academic libraries to raise their usefulness at universities in Korea. Especially, this study focused the evaluation of strategic plans, and drew an evaluation guideline based on the evaluation methods of strategic plan of academic library in foreign countries. This study checked the long-term development plans of academic libraries in Korea, and evaluated how much the core elements of strategic plan are reflected in the long-term plans. As the result, it has come out that there are more characteristics of operation plans as routine services than those of strategic plan as long-term view which contributes to the development of libraries in the long-term plans of academic libraries in Korea.

The vibration impact assessment for long-term damage mechanism of a pump (펌프 장기손상 메커니즘 규명을 위한 진동영향 평가)

  • Kim, T.H.;Kim, H.S.;Kim, D.K.;Kim, W.T.;Han, B.S.
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
    • /
    • 2009.10a
    • /
    • pp.441-445
    • /
    • 2009
  • The most of the goals of pump designers and users are efficient operation and productivity. But the safety-grade pumps in nuclear power plants are needed to operate continuously for an essential condition of system operation. Also, most of the rules and regulatory standards that have been prepared for nuclear pumps are dedicated to achieve public safety. The study examined pump vibration in a pump outlet flow and distinguished the regions of pump vibration frequency cause by cavitation and recirculation. The study made a counterproposal in determination of pump outlet flow so that the discharge flow will be able to minimize the long-term damage of the pump.

  • PDF

An Efficient Management of Sediment Deposit for Reservoir Long-Term Operation (1) - Reservoir Sediment Estimation (저수지 장기운영을 위한 퇴적토사의 효율적 관리(1) - 저수지 퇴사량 산정)

  • Ahn, Jae Hyun;Jang, Su Hyung;Choi, Won Suk;Yoon, Yong Nam
    • Journal of Korean Society on Water Environment
    • /
    • v.22 no.6
    • /
    • pp.1088-1093
    • /
    • 2006
  • In this study, the method of annual sediment estimation for reservoir long-term operation is proposed. Long-term daily precipitation and evaporation are predicted by Markov Chain. Using these values, reservoir inflow is simulated by NWS-PC model. Reservoir sediment load is estimated by sediment rating relation curve which is observed. From the simulation results, it was found that each simulated value by Markov Chain and NWS-PC was well compared to the observed ones and also estimated reservoir sediment was appropriate to the compared values using empirical equations. It is thought that the proposed method for estimation of reservoir sediment can be useful used to operate the reservoir.

A Study on the Classification of Institutional Long-term Care Based Upon Characteristics of Institutionalized Elderlies (노인복지시설 수용자 특성별 장기 요양서비스 유형설정에 관한 연구)

  • 김영숙;문옥륜
    • Health Policy and Management
    • /
    • v.4 no.2
    • /
    • pp.27-57
    • /
    • 1994
  • The objective of running a long-term care institution is to provide services helpful for maintaining, supporting, and improving elderlies' optimum level of physical, mental, and psychosocial functioning. For the purpose of analyzing the current situations of institutional long term care facilities in Korea, 27 facilities were selected proportionately from each of the cities and provinces, out of the total 152 facilities. About 20% of those who were institutionalized during 25 August through 2 Qctober 1993, the 391 elderlies were chosen on a systematic random basis. The instrument of this study was developed by modifying the tools of CARE, MAI and PCTC. A multivariate approach of discriminant analysis and clustering technique were employed for this study. The Stiudy reveals that there is no clear differentiation of goals and functions among the longterm care institutions in Korea. Staffing patte군 of long-term care facilities shows a shortage of nurses, physical therapists, and dieticians. The linkage between acute care facilities and long-term care is weak, and administration of long-term care faciltiy is carried out by non-professionals. They are responsible for assessing health status before entering the facility, and evaluating elderlies' care. Therefore, it is not surprising to find that most of the facilities have accommodated agede regardless of their real needs and health status. Based upon findings of the analysis, this study has classified long-term care facilities into four types : Type I is to help elderlies maintain independence in daily living activities. Type II facilities have the objective of maintaining and improving the current level of elderlies' function. Type III is to maintain maximum independence of elderlies in activities of daily living. And Type IV is identified for the group of facilities designed to restore or improve functional abilities of elderlies. In conclusion, the following suggestions are made : the need for long-term care should be assessed by multidimensional measurement. Institutional long-term care facilities should be classified and developed in response to type of type of care and service need. Both acute and long-term care facilities should be linked together in order to support the evaluation of service operation and program development.

  • PDF

Result of Surgical Treatment of Stage IIIB Lung Cancer (제3D 병기 폐암의 수술성적)

  • 홍기표
    • Journal of Chest Surgery
    • /
    • v.33 no.2
    • /
    • pp.173-178
    • /
    • 2000
  • Background: Though the surgical treatment of stage IIIB lung cancer is not generalized due to low complete remission rate high morbidity and mortality there are several reports on the improvement of long term survival after preoperative and postoperative adjuvant therapy. In this study we analyzed the prognostic factors affecting long term survival after surgical treatment of stage IIIB lung cancer Material and method: We analyzed the long term survival for age pathology invaded mediastinal organ n stage type of operation complete or incomplete resection and adjuvant therapy through a retrospective review of patients underwent surgical treatment. Result: From 1990 to 1998 56 patients(51/male 5/female0 with stage IIIB lung cancer were trated surgically. Forty two patients underwent radical resection and morbidity and mortality were 17% 12% respectively. The survival rate for overall patients and the radical resection group were 9% 12% respectively. In the radical resection group excluding explothoracotomy only(n=14) and the surgical mortality patients(n=5) the age the type of operation celly type resectability and N stage had no influence on the long term survival. The survival rate of radical resection group was significantly better than that of the explothoracotomy only group(p=0.04) The long term survival rate of postoperative combination therapy group was significantly better than chemotherapy or radiotherapy alone(p=0.04) Conclsion: Age type after surgical treatment of stage IIIB lung cancer. We conclude that combined modality of adjuvant treatment after radical resection of stage IIIB lung cancer seems to offer better long term survival in selective patients. The numbers of patients involved was small. Nevertheless these preliminary findings indicate questions that will need to be experienced further in larger studies.

  • PDF

The Operation, Problems and Long-term Development Policy of Gwangyang Port in Northeast Asia - With Regard to Logistics Hub Strategy - (동북아시대 광양항의 운영실태와 장기 발전방안 -물류거점화를 중심으로-)

  • 정봉현;최정우
    • Journal of Korea Port Economic Association
    • /
    • v.20 no.1
    • /
    • pp.21-42
    • /
    • 2004
  • This paper addresses the operation, problems, and development policy of Gwangyang Port, Korea. This paper aims to analyze the operation condition and problems of Gwangyang Port and suggest long-term policies for developing Gwangyang Port as a logistic hub in northeast period. It is made up of three main sections: the operation, problems, and forecast of freight volumes; analysis of operational results of Gwangyang Port; development strategies of Gwangyang Port as a Logistics Hub. This paper was mainly based on a review of current papers/reports, an analysis of secondary data, and questionnaire survey. The major development strategies identified consisted of expansion regular service sea-route, formation of inter-modal transportation system, strengthening of port sales for Gwangyang port's recognition, securing operation-profits by fixed cargo volume, and promotion of free tread zone.

  • PDF

Characteristics of 5 kW Class Proton-Exchange-Membrane Fuel Cell(PEMFC) Stack according to the Long-Term Operation (장기운전에 따른 5 kW급 고분자 전해질 연료전지 스택의 특성)

  • Kim, Jae-Dong;Lee, Jung-Woon;Park, Dal-Ryung
    • Journal of the Korean Institute of Gas
    • /
    • v.11 no.3
    • /
    • pp.40-43
    • /
    • 2007
  • The performance of PEMFC stack can be improved significantly by optimizing the design and operating conditions. As a result, the performance of daily operation showed slight deviation (0.02-0.9%) after accumulated DSS operation for 500 hrs but the stack performance was stable. Therefore, it is confirmed that it would be improved the life-time of stack and operation reliability for the commercialization of PEMFC system.

  • PDF

Flood Effects Analysis of Reservoir Basin through the Linkage of HEC-HMS and HEC-RAS Models (HEC-HMS와 HEC-RAS모형의 연계에 의한 댐 유역의 홍수영향 분석)

  • Lee, Weon-Hee;Kim , Sun-Joo;Kim , Phil-Shik
    • Journal of The Korean Society of Agricultural Engineers
    • /
    • v.46 no.2
    • /
    • pp.15-25
    • /
    • 2004
  • For the effective operation of irrigation reservoirs, a general and systematic policy is suggested to make balance of the conflicting purposes between water conservation and flood control. In this study, the flood effective analysis system was developed through the integration of long-term water budget analysis model, GIS-based HEC-HMS model and HEC-RAS model. The system structure consists of long-term water budget model using modified TANK theory, flood runoff and flood effects analysis model using HEC-GeoHMS, HEC-HMS and HEC-RAS models. The flood effects analysis system simulated the flood runoff from the upstream, downstream flood and long-term runoff of the watershed using the observed data collected from 1998 to 2002 of Seongju dam. The simulated results were reasonably good compared with the observed data. The optimal management method of the reservoir during the whole season is suggested in this study, and the flood analysis system can be a useful tool to evaluate a reservoir operation quantitatively for the mitigation of flood damages of reservoir basin.

RELIABLE ROLE OF NUCLEAR POWER GENERATION UNDER CO2 EMISSION CONSTRAINTS

  • Lee, Young-Eal;Jung, Young-Beom
    • Nuclear Engineering and Technology
    • /
    • v.39 no.5
    • /
    • pp.655-662
    • /
    • 2007
  • Most decision makers in the electricity industry plan their electric power expansion program by considering only a least cost operation, even when circumstances change with differing complexities. It is necessary, however, to analyze a long-term power expansion plan from various points of view, such as environmental friendliness, benefit of a carbon reduction, and system reliability, as well as least cost operation. The objective and approach of this study is to analyze the proper role of nuclear power in a long-term expansion plan by comparing different scenarios in terms of the system cost changes, $CO_2$ emission reduction, and system reliability in relation to the Business-As-Usual (BAU). The conclusion of this paper makes it clear that the Korean government cannot but expand the nationwide nuclear power program, because an increased energy demand is inevitable and other energy resources will not provide an adequate solution from an economic and sustainability point of view. The results of this analysis will help the Korean government in its long-term resource planning of what kinds of role each electric resource can play in terms of a triangular dilemma involving economics, environmental friendliness, and a stable supply of electricity.

Optimal Reservoir Operation Models for Paddy Rice Irrigation with Weather Forecasts (II) -Model Development- (기상예보를 고려한 관개용 저수지의 최적 조작 모형(II) -모형의 구성-)

  • 김병진;박승우
    • Magazine of the Korean Society of Agricultural Engineers
    • /
    • v.36 no.2
    • /
    • pp.44-55
    • /
    • 1994
  • This paper describes the development of real-time irrigation reservoir operation models that adequately allocate available water resources for paddy rice irrigation. Water requirement deficiency index(WRDI) was proposed as a guide to evaluate the operational performance of release schemes by comparing accumulated differences between daily release requirements for irrigated areas and actual release amounts. Seven reservoir release rules were developed, which are constant release rate method (CRR), mean storage curve method(MSC), frequency analysis method of reservoir storage rate(FAS), storage requirement curve method(SRC), constant optimal storage rate method (COS), ten-day optimal storage rate method(TOS), and release optimization method(ROM). Long-term forecasting reservoir operation model(LFROM) was formulated to find an optimal release scheme which minimizes WRDIs with long-term weather generation. Rainfall sequences, rainfall amount, and evaporation amount throughout the growing season were to be forecasted and the results used as an input for the model. And short-term forecasting reservoir operation model(SFROM) was developed to find an optimal release scheme which minimizes WRDIs with short-term weather forecasts. The model uses rainfall sequences forecasted by the weather service, and uses rainfall and evaporation amounts generated according to rainfall sequences.

  • PDF