• 산업경영시스템학회지
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• 제43권3호
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• pp.61-67
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• 2020

The fourth industrial revolution encourages manufacturing industry to pursue a new paradigm shift to meet customers' diverse demands by managing the production process efficiently. However, it is not easy to manage efficiently a variety of tasks of all the processes including materials management, production management, process control, sales management, and inventory management. Especially, to set up an efficient production schedule and maintain appropriate inventory is crucial for tailored response to customers' needs. This paper deals with the optimized inventory policy in a steel company that produces granule products under supply contracts of three targeted on-time delivery rates. For efficient inventory management, products are classified into three groups A, B and C, and three differentiated production cycles and safety factors are assumed for the targeted on-time delivery rates of the groups. To derive the optimized inventory policy, we experimented eight cases of combined safety stock and data analysis methods in terms of key performance metrics such as mean inventory level and sold-out rate. Through simulation experiments based on real data we find that the proposed optimized inventory policy reduces inventory level by about 9%, and increases surplus production capacity rate, which is usually used for the production of products in Group C, from 43.4% to 46.3%, compared with the existing inventory policy.

• 보건교육건강증진학회지
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• 제20권1호
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• pp.61-76
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• 2003

As people get broader access to health information through the internet, there is a greater need for measure to maximize the social advantages of the internet and to minimize negative side-effects. With this concern, this paper classifies internet health information services sites into : on-line supply of health information, on-line consultation, on-line diagnosis, and on-line sales. As well this paper analyzes domestic laws supporting and/or regulating these services. The efficient provision of internet health services requires comprehensive laws on individual privacy protection, prevention and handling of medical accidents, an electronic prescription form for internet diagnosis, electronic signing, payment for medical expenses, qualifications for internet medical practitioners. Additional laws are required to establish internet pharmacies and internet health goods stores. These new laws can be prepared either separately or through revision of existing laws governing medical practice, pharmacies, and public health promotion. However, as the legal control by the government on cyber processes and entities has a fairly minimal effect, consumers should be encouraged to improve their own capacity for wisely using internet health services and health-service providers should be encouraged to promote voluntary supervision and control of their own services and practices.

• International Journal of Advanced Culture Technology
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• 제8권2호
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• pp.252-259
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• 2020

Wheatgrass is a type of young grass that contains a lot of vitamins, minerals, and protein even compared to grain products produced from its mature cereal plants. In the context of product development and increasing product sales value, a study on the use of wheatgrass extract as an ingredient of fermented beverage was conducted. In this study wheatgrass used was self-grown using a tray in the Laboratory. The variation of wheatgrass extracts used was obtained from the twin-gear type extractor, slow-squeeze type extractor, and chopped wheatgrass. In the extraction process, the performances of the process: density, extract yield, processing capacity, and the rate of production, were analyzed. For another analysis, the physicochemical properties both of wheatgrass extracts and fermented beverages were also analyzed. The physicochemical properties analyzed included TSS, pH, acidity, and others content. The results of extraction performance analysis and physicochemical characteristics of wheatgrass extract planted at 10-20℃ based on this research gave the best results using the twin-gear extractor. The twin-gear type of extractor used in this study. All of these results were also in accordance with the statistical analysis conducted in this study.

• 한국국방경영분석학회지
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• 제28권1호
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• pp.17-28
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• 2002

Recently, To define an enterprise's survival strategy is a difficult task, because the competition of a business is a complexity. The reason is the original research uses a statistical survey method. On a conceptual point of SCM, - as an order of development, physical distribution, logistics management, basic supply chain management and advanced supply chain management etc - a supervisor is magnifying gradually as well as confusing with information and analysis techniques which seems possible. On executing this, however, it has many problems since it is hard and wide; therefore, The Manager don't aware a total executable solution even though the enterprise knows necessity of SCM. On this paper focus on a proposal of alternatives with reasonableness of manufacturing and making a profit of sales department like most of enterprises are willing to overcome such as carelessness and unready strategy of investment additionally, the thesis should effort to find an element through an analysis of cases, a statistical method of effective SCM, and actual survey to propose an alternative; moreover, this paper proved the facts that it could be a guiding company, which has an ability of cooperation with entities through the founding of supply chain. As a conclusion, this essay showed the variation that influences the capacity entities and alternative to define an element which basically influence for a cause and effect.

• 전기학회논문지
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• 제65권2호
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• pp.264-268
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• 2016

Recently, various energy efficiency optimization activities are ongoing globally by integrating conventional grids with ICT (Information and Communication Technology). In this sense, various smart grid projects, which power suppliers and consumers exchange useful informations bilaterally in real time, have been being carried out. The electric vehicle diffusion program is one of the projects and it has been spotlighted because it could resolve green gas problem, fuel economy and tightening environmental regulations. In this paper, the economics of V2G system which consists of electric vehicles and the charging infrastructure is evaluated comparing electric vehicles for V2G with common electric vehicles. Additional benefits of V2G are analyzed in the viewpoint of load leveling, frequency regulation and operation reserve. To find this benefit, electricity sales is modeled mathematically considering depth of discharge, maximum capacity reduction, etc. Benefit and cost analysis methods with the modeling are proposed to decide whether the introduction of V2G systems. Additionally, the methods will contribute to derive the future production and the unit cost of electric vehicle and battery and to get the technical and economic analysis.

• 보건의료산업학회지
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• 제7권1호
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• pp.69-82
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• 2013

The initial approach to this study is to focus on pharmaceutical companies' internal marketing activities for organizational diagnosis. By analysing the influence of internal marketing elements on the job satisfaction, organizational commitment, and turnover intention of pharmaceutical salespeople, this study aims at coming up with ways to strengthen the sales capacity and competitive edge of pharmaceutical companies through the salespeople's satisfaction. For 32 days between November 10th and December 12th of 2012, a total of 210 copies of questionnaires were given to the respondents and 203 of them except 7 with insufficient answers were used for the final analysis. The analysis result showed that internal communication, delegation of authority, and reward system among the elements of internal marketing activity had a positive influence on the workers' job satisfaction. The internal marketing activity elements did not influence the respondents' organizational commitment. Job satisfaction had a positive influence on their organizational commitment, while it had a negative influence of turnover intention. The conclusion section encapsulated the results of empirical analysis and proposed practical lessons regarding pharmaceutical companies' internal marketing.

• 농업과학연구
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• 제48권3호
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• pp.473-482
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• 2021

In this study, we attempted to estimate the degree of management of chestnut forestry households in Chungcheongnam-do and to provide information for establishing chestnut cultivation-related policies. The chestnut management standard diagnostic table consists of three major categories, namely, management base, management and sales capacity, and production technology levels, along with 19 subcategories. A survey of 309 chestnut forestry households was conducted from 2014 to 2019 in Gongju, Cheongyang, and Buyeo in Chungcheongnam-do. The average score for the 19 subcategories was 65.7 points, indicating that these areas have excellent management conditions. When the total score was higher, the output per hectare and the rate of top-grade products in the total output were also higher, indicating a significant correlation. These findings will be useful for providing consulting services to chestnut growers as they highlight the correlation between the higher scores of the indicators in the chestnut management standard diagnostic table and the management performance of the farmers. We found that the scores of the indicators for management and sale skill, such as management record and analysis, material purchase, and direct transaction with consumers, were relatively lower than those of the indicators for management base and production skill. It is assumed that the chestnut growers aging has led to negligence in recording details on incomes, expenditures, and work and lowered the willingness to make substantial profits. Therefore, it is essential to overcome these problems for profitable chestnut farming.

• 벤처창업연구
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• 제11권4호
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• pp.205-213
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• 2016

본 연구는 중소기업우선제도의 용어 및 해석이 불명확하여 국가연구개발사업 성과활용이 저해되고 있다는 비판에 따라 관련 용어의 정의 및 해석을 명확하게 하고자 하였다. 첫째, "국내"라 함은 우리나라에서 사업소의 주소나 거소를 두는 것"을 말한다. 둘째, "기술실시능력"이라 함은 "국가연구개발 성과기술을 이용하여 제품의 개발이나 생산 또는 판매활동을 수행하거나, 이에 관한 공정기술의 향상 등 '기술을 사업화 또는 실용화할 수 있는 사실상의 역량"을 말한다. 셋째, "우선적으로 고려"에 있어 "우선"이라 함은 기술실시계약을 체결하고자 하는 기업이 여러 곳일 경우에, 먼저 중소기업에게 계약체결의 기회를 제공하여야 한다는 원칙을 규정한 것으로 특별한 사정이 존재하지 않는 한, 중소기업과 기술실시계약을 하도록 기술보유기관에 대해 일정한 노력의무를 부과한 것이다. "우선적으로 고려"하여야 한다는 반드시 중소기업에게 우선권을 제공하여야 하는 것과는 달리 중소기업과의 기술계약체결을 위한 '노력'을 충분히 한 것으로서 본 규정의 의무조건을 이행한 것으로 간주될 수 있다. 본 연구의 의의는 현행 중소기업 우선제도의 용어 정의 및 해석을 통해 현행 제도의 실무 적용가능성을 높인 점을 들 수 있으며, 본 연구의 한계로는 "기술실시능력 보유 여부에 대한 판단기준", 중소기업 발굴을 위한 '충분한 노력'에 대해 절차와 방법에 대해 일의적으로 명확하게 정의 및 해석하지 못한 바, 이에 대한 후속연구를 기대한다.

• 한국산학기술학회논문지
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• 제20권12호
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• pp.69-75
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• 2019

본 연구의 목적은 EV 경상용차에 적용되는 히트펌프 시스템에 대한 냉방 성능 특성을 실험적으로 분석하는 것이다. EV 경상용차가 운전되는 냉방 운전조건인 외기온도 35 ℃, 내기온도 25 ℃ 상황에서, 히트펌프 시스템의 냉방 특성을 분석하고자, 냉각수의 온도조건, 전동식 압축기 회전수 조건 변화에 대해서, 실험을 진행하였고, 그 결과를 분석하였다. 전동식 압축기 회전수가 증가할수록 냉방 성능이 평균 8.0 %가 증가하였고, 전동식 압축기 소비전력은 27 %가 증가하여서, 시스템 효율은 16.4 %가 감소하는 결과를 보여주고 있다. 전자장비 냉각을 위한 냉각수의 폐열을 활용하기 위하여서, 냉매랑 냉각수가 열교환 하는 칠러를 본 시스템에 적용하였다. 칠러에 적용되는 냉각수의 온도를 35 ℃에서 55℃로 변화시켰을 때, 응축 열원의 증가로 인하여서, 시스템 효율이 평균적으로 18.2 %가 떨어지는 결과를 보여주고 있다. 냉각수 유량 변화 측면에서, 운전 조건을 변화시켰지만, 냉방 성능에는 큰 변화를 보이고 있지 않았다. 향후, 냉각수 폐열을 사용하여서, 히트펌프 시스템에 대한 난방 성능 향상을 위한 연구가 필요한 상황에서, 관련 연구에 추가 할 예정이다.

• 산업경영시스템학회지
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• 제40권4호
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• pp.164-170
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• 2017

The CNC machine tool field is showing a growing trend with the recent rapid development of manufacturing industries such as semiconductors, automobiles, medical devices, various inspection and test equipment, mechanical metal processing equipment, aircraft, shipbuilding and electronic equipment. However, small and medium-sized machining companies that use CNC machine tools are experiencing difficulties in increasingly intense competition. Especially, small companies which are receiving orders from 3rd or 4th venders are very difficult in business management. In recent years, company S experienced difficulty to make product quality and delivery time due to the ignorance of the processing method when manufacturing cooling plate jig made of SUS304 material used for cell phone liquid crystal glass processing. In order to solve these problems, we redesigned the process according to the size of our company and tried to manage all processes with quantified data. In the meantime, we have found that there is a need to improve the cutter process, which accounts for most of the machining process. Therefore, we have investigated the correlation between RPM and FEED of three cutters that have been used in the past. As a result, we found that it is the most urgent problem to solve the roughing process during the cutter operation which occupies more than 70% of the total machining. In order to shorten the machining time and improve the quality in machining of SUS304 cooling plate jig, we select the main factors such as price, tool life, maintenance cost, productivity, quality, RPM, and FEED and use AHP to find the most suitable milling cutter. We also tried to solve the problem of delivery, quality and production capacity which was a big problem of S company through experiment operation with selected cutter tool. As a result, the following conclusions were drawn. First, the most efficient of the three cutters currently available in the machining center has proven to be an M-cutter. Second, although one additional facility was required, it was possible to produce the existing facilities without additional investment by supplementing the lack of production capacity due to productivity improvement. Third, the Company's difficulties in delivery and capacity shortfalls have been resolved. Fourth, annual sales increased by KRW 109 million and profits increased by KRW 32 million annually. Fifth, it can confirm the usefulness of AHP method in corporate decision making and it can be utilized in various facility investment and process improvement in the future.