• Journal of Electrical Engineering and Technology
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• 제12권3호
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• pp.1124-1136
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• 2017

Direct Power Control technique has become popular in the grid connected Voltage Source Converter (VSC) applications due to its simplicity, direct voltage vector selection and improved dynamic performance. In this paper, a direct method to determine the effect of voltage vector on the instantaneous active and reactive power variations is developed. An alternative Look Up Table is proposed which minimizes the commutations in the converter and results in minimum reactive power variation. The application of suggested table is established for Shunt Active Power Filter (SAPF) application. The Predictive Direct Power Control method, which minimizes apparent power variation, is further investigated to reduce commutations in converters. Both the methods are validated using 2 kVA laboratory prototype of Shunt Active Power Filters (SAPF).

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2012년도 춘계학술대회 논문집
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• pp.999-1000
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• 2012

• International Journal of Quality Innovation
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• 제9권3호
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• pp.29-56
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• 2008

Since the execution of National Health Insurance system in Taiwan, the competition of medical industry is becoming more and more severe. The ways the hospital operate knowledge management (KM) concept, combine current human resources and professional knowledge by information techniques and upgrade the competitiveness through reinvention of organizational culture have become the important issues. This research is based on the relationship between KM and organizational operation, integrates the characteristic of medical institutions and framework of medical knowledge cycle and starts the research subject by questionnaires from three dimensions: current situation of KM construction in medical organizations, executive effect of KM activities and the challenges faced by KM; subsequently, from qualitative interview, this research attempts to understand how a medical organization executes and adjusts in the consideration of theory and reality as well as quality and costs when actually operates the organization. This research accesses to KM system application of medical institutions and the empirical executive benefits and difficulties through questionnaires. The research results are as follows: (1) having initial understanding toward current KM establishment of medical institutions; (2) confirming the most important items of KM establishment of medical organizations; (3) understanding the most difficulty which the medical organizations encounter when executing KM; (4) establishing medical knowledge cycle figure of the hospitals receiving interviews. Through case interview, this research profoundly accessed to the actual operation of KM application of medical organizations. The target hospitals intended to try many medical KM measures; however, during to complicated hospital organizations and cultural characteristics, the promotion was not successful and the results were not apparent. The most difficulty was to change the employees’ behavior. The targets believed that only the continuous promotion of KM can allow it to be an important aspect of organizational culture and the competitiveness could constant be upgraded.

• 농업과학연구
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• 제38권3호
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• pp.583-591
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• 2011

Status survey on short-term agricultural machinery rental business was conducted to provide basic data for effective and sustainable implementation of the rental system. Selected survey samples were 34 rental management institutions such as city and county level government offices and agricultural technology development centers, and Primary Agricultural Cooperatives. Survey was conducted through mailing of questionnaire papers and direct interviews with the officers in charge of the agricultural machinery short-term rental management. Number of agricultural machinery retained by the 34 management institutions for the machinery rental business was 3,699, and numbers of the machinery were 1630 for upland crops, 929 for rice, 542 for orchard farming, 274 for animal husbandry, and 324 for common use. Regarding size of warehouse for rental agricultural machinery, 50% of the institutes were less than 660 $m^2$, 26.5% were greater than 993 $m^2$, and 23.5% were between 663 and 990 $m^2$. Institutes maintaining machinery washing facilities were only 10 (29%) among the 34 rental management institutions. Agricultural machinery rental business was advertised to farmers by 91% of the institutes, and the methods were leaflet (35.2%), village broadcasting (26.5%), call-up education (23.6%), and TV and radio (14.7%). Major contents of the advertisement were rental procedure (52.9%), rental machinery (26.5%), and rental cost (20.6%).

• 정보보호학회논문지
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• 제28권3호
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• pp.655-663
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• 2018

디지털화가 가속되면서 학교나 도서관 등 공공기관에서 디지털 정보의 이용이 증가하고 있으며 프린트 서비스의 요구도 점점 증가하고 있다. 많은 서비스 가운데 공공 PC에서 프린트 서비스를 이용할 시 사용료를 지불하도록 해야 하는데 관리자에게는 꽤나 까다로운 업무이다. 이러한 까다로운 업무를 자동화할 수 있도록 하는 프린트 관리 시스템이 개발되어 현재 널리 사용되고 있다. 이 논문에서는 현재 공공기관의 공공PC에서 사용되고 있는 프린터 관리 시스템의 취약성을 분석하였는데 공공 PC 관리자 및 프린터 관리 솔루션 개발자들의 보안의식과 보안개발에 대한 인식은 아직 많은 부분이 부족한 것으로 보인다.

• 대한안전경영과학회지
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• 제19권1호
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• pp.53-62
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• 2017

Full embroidery industrial accidents in recent years has shown a declining trend. But disaster embroidery of domestic construction industry were more than 20,000 deaths per year is about 500 people. The government has introduced a construction site often changing the recruitment of new construction based on health and safety as an alternative to road safety education training yisuje of construction workers, daily work periods short. Certificate of Basic OSH Training in Constructions had also been evaluated as successful by reducing the accident rate problem. It is conducted in private educational institutions has occurred on the friction between workers and employers and training costs are difficult to approach workers in the education standards for such facilities due to the superintendent. Educational institutions are institutions that have been caused by excessive competition lowered levels of education. There is also a lack of evaluation that the training is limited to the basic safety knowledge. These details are brought formal safety education purposes only and is introducing the results of other self jyeotgi difficult to reap the proceeds to good effect. In this study, we propose a plan for improving operational problems and enemy status based on research data presented after the Certificate of Basic OSH Training in Construction.

• 벤처창업연구
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• 제7권1호
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• pp.225-232
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• 2012

벤처중소기업들은 초기 사업화 과정에서 신생기업의 위험 문제로 어려움을 겪고 있는데, 공공부문을 포함한 외부 인큐베이터의 지원은 벤처중소기업들의 애로요인 극복에 도움이 될 수도 있다. 이와 관련하여 국가연구개발기관에서 수행 중인 기술사업화 종합지원사업의 의의와 필요성을 검토하고, 구체적인 사례로서 한국세라믹기술원의 세라믹히든챔피언 종합육성사업을 분석하였다. 국가연구개발기관의 기술사업화 종합지원사업은 국가연구개발사업의 사업화 성과 향상 뿐 아니라 영세한 기업의 자원보완 및 지식 전수라는 점에서 긍정적으로 검토해볼 필요가 있을 것으로 판단된다. 그러나, 사례조사 결과 외부지원기관 및 지원기업에 대한 유인체계 및 관리시스템의 개선, 추진조직 활동 간의 조정문제 등은 해결해야 할 과제로 보인다.

• 한국태양에너지학회 논문집
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• 제36권4호
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• pp.57-65
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• 2016

Domestic photovoltaic system for roof-top is installed towards the south at an angle of 20 to 35 degrees and the shape of PV array is divided into two kinds; a plane shape and a curved shape. This paper aims to understand an actual condition of PV facility and strengths and weaknesses of support structure production and installation and to consider the best PV surface shape by analyzing theoretical logics of these two surface shapes and architectural perspective-based realistic case studies. This study targeted 98 facilities including common houses, public institutions and education institutions. In common houses, all of 59 PV facilities have a plane surface. In public institutions, 7 of 15 PV facilities have a curved array surface and 8 PV facilities have a plane surface. In education institutions, also, 14 of 24 PV facilities have a plane array surface and 10 PV facilities have a curved surface. Most of 98 facilities have a flat roof supporting shape. However, it was found that the curved shape wasn't positive for PV generation due to the change of radial density and it was at least 10 % more expensive to produce its structure. Also, domestic general large single-plate PV facilities have problems of harmony with buildings and wind load. Therefore, it is considered that for fixed-type roof-top PV, a plane PV array shape is good for optimum generation and economic efficiency and a parallel array structure on the roof surface is favorable to wind load and snow load without being a hindrance to the building facade.

• 한국정보통신학회논문지
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• 제19권6호
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• pp.1341-1346
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• 2015

현재의 국내의 많은 자영업자들이 창업의 실패를 경험하고 있다. 이러한 점에서 무분별한 창업을 줄이고, 창업의 성공률을 높이기 위해 창업 준비과정에서 명확하고 통합된 정보의 제공이 요구된다. 본 연구는 다양한 공공기관들이 분산되어 보유하고 있는 다양한 데이터를 통합한 빅데이터를 제언하고자 한다. 이를 위해 창업에서 요구되는 데이터의 유형을 분류하고 통합적 창업지원 정보시스템 구축을 위한 데이터 통합, 분석 기술, 창업자를 위한 웹 또는 스마트 서비스의 유형을 제시하고자 한다.

• 대한안전경영과학회지
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• 제17권1호
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• pp.257-264
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• 2015

"Act on Facilitation of Purchase of Small and Medium Enterprise - Manufactured Products and Support for Development of Their Markets" was created and implemented. The act states that the materials designated by the Small and Medium Business Administration are directly purchased from the small and medium enterprises and provided to the construction companies so that the materials can be provided as GFGI (Government Furnished and Government Installed) in the case of a public construction project. This thesis is aimed to analyze the current status on the problems of each project party and understand their improvement requests so that mutually beneficial plans can be sought and improved process is presented for the continuous development of the direct construction material purchase system as well as successful construction projects. And This thesis summarized the purpose of the institutions and their change histories, and related law as well as codes for the better understanding of administrative procedures for the purchase system and the analyses as well as the improved process on the difficulties in complying with the current institutions.