• 제목/요약/키워드: Control of demand and supply

검색결과 340건 처리시간 0.026초

보건소 재기 암환자 관리사업에 대한 환자의 요구도 및 제공정도 (A Study on Demand and the Supply for Home-based Cancer Patient Management Projects of Public Health Centers)

  • 조현;손주영;허점도;진은희
    • Journal of Hospice and Palliative Care
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    • 제10권4호
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    • pp.195-201
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    • 2007
  • 목적: 본 연구에서는 전국의 시 군 구 보건소 재가 암환자 관리사업의 객관적 실태분석의 일환으로 재가 암환자 관리 사업의 주 대상자인 재가 암환자를 대상으로 개발된 조사도구를 이용하여 그들의 재가 암환자 관리 요구도와 제공정도를 파악하는데 목적이 있다. 방법: 재가암환자 관리사업의 요구도 및 제공정도로 구성된 설문지를 개발 조사하고 수집된 자료는 SPSS WIN 12.0을 이용하여 빈도와 백분율을 중심으로 분석하였다. 결과: 현재 재가 암환자 관리사업을 통해 제공되고 있는 서비스를 신체적, 정서적, 영적, 교육정보적 서비스로 나누어 재가 암환자들을 대상으로 조사한 결과 요구도와 제공정도는 정서적 서비스에서 가장 높고 다음으로 교육 정보적 서비스, 영적 서비스, 신체적 서비스 순으로 조사되었다. 각 서비스별 주요 항목을 살펴보면 신체적 서비스의 경우 통증조절은 요구도에 비해 그 제공정도가 낮았고 반면 배설장애조절과 개인위생은 요구도에 비해 그 제공정도가 높은 것으로 나타났다. 또한 정서적 서비스의 경우 전반적으로 요구도와 제공정도가 높았고 영적 서비스의 경우 요구도에 알맞게 서비스가 제공되고 있는 것으로 나타났다. 결론: 본 연구는 보건소 재가암환자 관리사업에 대한 환자의 서비스 요구도와 실제 제공받은 서비스 정도를 분석한 연구로서 향후 재가 암환자의 요구도에 근거한 효율적 프로그램 개발의 기초자료로 활용이 가능할 것으로 사료된다.

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행동-보상 학습 기법을 이용한 적응형 VMI 모형 (An Adaptive Vendor Managed Inventory Model Using Action-Reward Learning Method)

  • 김창욱;백준걸;최진성;권익현
    • 한국경영과학회지
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    • 제31권3호
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    • pp.27-40
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    • 2006
  • Today's customer demands in supply chains tend to change quickly, variously even in a short time Interval. The uncertainties of customer demands make it difficult for supply chains to achieve efficient inventory replenishment, resulting in loosing sales opportunity or keeping excessive chain wide inventories. Un this paper, we propose an adaptive vendor managed inventory (VMI) model for a two-echelon supply chain with non-stationary customer demands using the action-reward learning method. The Purpose of this model is to decrease the inventory cost adaptively. The control Parameter, a compensation factor, is designed to adaptively change as customer demand pattern changes. A simulation-based experiment was performed to compare the performance of the adaptive VMI model.

식량수급(食糧需給)에 따른 비료수요(肥料需要) 전망(展望) (Long-run Estimation of Fertilizer Demand in Korea to Meet the National Food Supply)

  • 이윤환
    • 한국토양비료학회지
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    • 제9권3호
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    • pp.133-147
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    • 1976
  • 1. The purpose of this study is to provide a series of statistical "bench marks" from which one can begin to think systematically about the required development of the Korean food and fertilizer needs over the next quarter-century. 2. The Korean population has been estimated by the characteristics of the population and its social and political situations today. Because fertility and mortality rates are relatively stable and are under control of politics concerned, the estimation rates were established with 1.6% over 1975-1980, 1.3% over 1981-1990, and 1.0% over 1991-2000. 3. Annual per capita absorption of milled rice has fluctuated rather closely around 140kg, since 1968, with no evidence of declining trend. Per capita absorption of barley and wheat around 120 kg, and legumes around 10.6kg, However because the case of wheat and corn productions are rather difficult the self-sufficiency in the future, the rice is considered to be accelerate its yield growth surplus the level of self-sufficiency to export. 4. The fertilizer demand in each element has been calculated by mechanical multiplication of "the recommend index of fetilizer application" to yield a unit production over the need of national food supply by crop year. 5. As a results refer to Table (8), the estimated quantities of total fertilizer demand to meet the national food supply of the years of 1974, 1980, 1985, 1.990, 1995, and 2000 are reached around 871500, 1138150, 1375480, 1515030, 1652090 and 1799850 metric tons in each year.

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행정중심복합도시 대중교통 이용활성화를 위한 수요탄력성 분석 (An Analysis of Demand Elasticity to Facilitate the Use of Public Transportation in the Administrative City)

  • 김태균;박지은;이윤상
    • 토지주택연구
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    • 제9권3호
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    • pp.9-18
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    • 2018
  • Administrative city has been developed step by step aiming to being a public transport-oriented new city. In spite of its primary goal, administrative city is dominated by car-oriented tansportaion system because the supply of public transportation has not been adequately and timely performed. In this study, we investigate the current situation related to (public) transportation use in administrative city. Also, we examine the issues of traffic system through a survey on residents' consciousness about public transportation use. Additionally, the analysis of demand elasticity according to the change of the conditions of using public transportation and passenger car is conducted for passenger car users. As a result, it is analyzed that as the neighborhood is more stabilized after the completion of development the resistance to the abandonment of passenger car is higher when the tide demand control method is introduced. Therefore, it is concluded that pre-emptive public transportation supply and the management of car demand management are necessary for the activation of public transportation in Administrative city.

A Study on Car Ownership Forecasting Model using Category Analysis at High Density Mixed Use District in Subway Area

  • Kim, Tae-Gyun;Byun, Wan-Hee;Lee, Young-Hoon
    • 토지주택연구
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    • 제2권3호
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    • pp.217-226
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    • 2011
  • The Seoul Metropolitan Government is striving to minimize the amount of traffic according to the supply of apartment houses along with the solution of housing shortage for the low income people through high density development near the subway area. Therefore, a stronger policy is necessary to control the traffic of the passenger cars in a subway area for the successful high density development focusing on public transportation, and especially, the estimation of the demand of cars with high reliability is necessary to control the demand of parking such as the limited supply of parking lot. Accordingly, this study developed car ownership forecasting model using Look-up Table among category analyses which are easy to be applied and have high reliability. The estimation method using Look-up-Table is possible to be applied to both measurable and immeasurable types, easy to accumulate data, and features the flexible responding depending on the changes of conditions. This study established Look-up-Table model through the survey of geographical location, the scale of housing, the accessible distance to a subway station and to a bus station, the number of bus routes, and the number of car owned with data regarding 242 blocks in Seoul City as subjects.

북한산 수산물 반입제약요인 및 확대전략 (Expanding the Imports of North Korean Fishery Products)

  • 성숙경;홍성걸
    • 수산경영론집
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    • 제40권3호
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    • pp.89-105
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    • 2009
  • South Korea imports more than one hundred tons of fishery products every year from China, Japan, North Korea, etc. However, imported North Korean fishery products was only 4% of the total fishery products imported in 2007. Though South-North Trade as inter-Korean trade is exempted from tax, imports of North Korean fishery products have not been activated owing to import restrictions, insufficient quality control etc. Expanding imports of North Korean fishery products seems, however, to contribute to lessen the supply and demand unbalance in fishery products of South Korea. It will especially gratify a part of fresh and cold fishery products demand. Therefore, we need to expand the imports of North Korean fishery products by quality control improvement, reformation of origin certifying system, import liberalization etc. This study researches the demand and supply of fishery products of South and North Korea, the actual conditions of imports of North Korean fishery products, and suggests strategies to expand their imports. As the greatest reason to oppose imports of North Korean fishery products is the pricing pressure of domestically produced fishery products due to imports of North Korean fishery products, we need to research and analyze the distribution channels, retail markets, sales prices of imported North Korean fishery products to verify that imports of North Korean fishery products has not caused lower pricing of domestically produced fishery products.

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매출 공유 계약의 공급망 품질 개선 효과 (Effect of a Revenue-Sharing Contract on Quality Enhancement in a Supply Chain)

  • 유승호
    • 한국경영과학회지
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    • 제42권1호
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    • pp.1-17
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    • 2017
  • This study investigates a buyer-supplier supply chain, in which a buyer delegates the production process to a supplier as in many practices. The consumer's buying intention and overall supply chain performance are affected not only by the buyer's decision on sales price but also by the supplier's decision on product quality. Therefore, the buyer has a motivation to control the supplier's quality investment. Among various incentive schemes that the buyer can adopt in practice, we consider a revenue-sharing contract and investigate its unique characteristics. By comparison with a typical wholesale price contract, we reveal that the revenue-sharing contract can enhance supply chain's overall performance, including quality, demand, and profits of not only overall supply chain but also each player. We contribute to the academia and the supply chain practice by providing important guidelines in adopting incentive schemes and effectively managing product quality in a supply chain.

시뮬레이션 최적화 방법을 이용한 다단계 공급망 재고 관리 (Multi-Stage Supply Chain Inventory Control Using Simulation Optimization)

  • 유장선;김신태;홍성록;김창욱
    • 산업공학
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    • 제21권4호
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    • pp.444-455
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    • 2008
  • In the present manufacturing environment, the appropriate decision making strategy has a significance and it should count on the fast-changing demand of customers. This research derives the optimal levels of the decision variables affecting the inventory related performance in multi-stage supply chain by using simulation and genetic algorithm. Simulation model helps analyze the customer service level of the supply chain computationally and the genetic algorithm searches the optimal solutions by interaction with the simulation model. Our experiments show that the integration approach of the genetic algorithm with a simulation model is effective in finding the solutions that achieve predefined target service levels.

건축물의 비상전원 적용실태 및 자가발전설비의 안전 운전 모델에 관한 연구 (Analysis on Emergency Power Supplies in Buildings and a Model for Safe Operation of the Emergency Power System)

  • 이원강;최충석
    • 한국안전학회지
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    • 제27권3호
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    • pp.49-56
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    • 2012
  • The purpose of this paper is to present a model for operating an emergency power system(EPS) that can secure a sufficient power supply used in case of a fire by analyzing the status of power supplies for emergency and firefighting operations. Investigations on the one of the causes of the operational failure of firefighting systems show evidence of EPS. Generally, when power to a building is interrupted, EPS supplies the emergency load(excepted firefighting load) first. When a power outage and a fire occur simultaneously, the EPS must be able to supply both the emergency load and the firefighting load, especially the firefighting load to the end. However, in order to save construction costs, emergency power generators in apartment, commercial, and business buildings can satisfy only one of the required loads. In cases like this, when a power outage and a fire occur simultaneously, there is a danger of firefighting equipment not operating due to insufficient power supply from the emergency generator. Therefore, an EPS must have a reserved firefighting power that can supply both the firefighting and the emergency load. Such EPS, when faced with a danger of an overload, will shut down the supply to all or part of the emergency load, thus securing a continuous power supply to the firefighting equipment. The generator power system with reserved firefighting power (RFP) will also have an indicator to show that the selective control is being used. General power generation systems for emergency load and firefighting load were found to have a demand factor of 50-60% with a lump. However, when installing an EPS, the builders must choose the higher demand factor suggested according to the official approval demand factor of the building.

한약재 품질관리의 개선방향

  • 박진한
    • 대한한약학회:학술대회논문집
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    • 대한한약학회 2007년도 Autumn Conference
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    • pp.129-144
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    • 2007
  • In order for stable demand-supply and regularity of distribution, "The regulations for management of demand-supply and distribution of medicinal herbs" were established on 1995. Therefore, the medicinal herbs of good quality have been controled to be distributed in the market. However, to be wide of the purpose, the standardized sound distribution system was caused due to the governmental control on demand-supply to protect domestic farmers who produce the material for medicinal herbs, which results in the over distribution of non-standardized or illegally imported medicinal herbs. In addition, because of the distribution of faulty or poor medicinal herbs, there are chances of affecting bad effects on public health. The standardized medicinal herbs cover 514 different kinds in total, of which 69 products are specified to be standardized in the oriental medicine product companies. Also, in order to protect farmers who produce the materials for medicinal herbs, the amount of imported materials are regulated in normal times. The 14 different materials for medicinal herbs, which are allowed to be imported to a certain amount only when the shortage of goods or sudden rise of prices is to happen, are frequently introduced into domestic market as food not as medical usage, and the origin of those illegally changes to home cropped one for the distribution in the market. In addition, the system of distribution are to be disordered and the condition for the distribution of medicinal herbs of good quality can not be made since they illegally changes the usage of the materials for medicinal herbs from their original one and can not be regulated by the domestic laws.

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