• 핵의학기술
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• 제12권3호
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• pp.199-207
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• 2008

목적 : 역할 모델링의 목적은 효율적(빠르고, 쉽고, 정확 하게)으로 업무를 수행하는 업무의 달인(達人)을 찾아 이를 모델로 하여 실무자들이 효과적으로 각자 맡은바 업무를 수행 할 수 있도록 하기 위한 과정이다. 이러한 과정은 실무자들 간의 업무 능력의 편차를 발견하고 역할 모델을 제시하여 실무에 최적화된 업무 프로세스를 정착하기 위한 노력이며 이는 업무 기술 기준의 표준화 작업이라고 할 수 있다. 실험재료 및 방법 : 서울아산병원 핵의학과는 6~7개의 역할 모델링 항목을 개발하였고, 실무에 적용하여 관리하고 있다. 이 중에서 첫째, Bone scan 검사 시에 발목 고정의 중요성 인식 및 고정의 효율 향상과 둘째, Bone scan 검사에서 시작 지점과 종료 지점의 표준화를 통한 업무 개선 사례를 보고한다. 결과 : 두 가지의 사례 모두에서 개선 전에 비하여 개선 후에 업무 효율을 향상할 수 있었다. 결론 : 역할 모델링(Role modeling)의 실무 활용은 궁극적으로 성공적인 업무 수행자 또는 우수한 집단들의 행동 및 업무를 과학적으로 분석하여 탁월한 역할 모델을 발굴하고 이를 업무 기술 기준 표준화에 적극 활용하여 직원들 간의 업무능력의 편차를 줄이는데 그 목적이 있다. 즉, 담당 업무를 효과적으로 잘 처리하는 직원을 모델로 하여, 업무를 열심히 수행함에도 불구하고 그 성과가 부족한 직원의 성과 향상을 꾀하는 것이 주된 목적이라 하겠다. 핵의학팀은 역할 모델링 항목을 지속적으로 개발하고 실무에 활용하여 업무를 개선해 나아갈 계획이며 업무 개선 활동에 유용하게 사용할 수 있는 도구로 평가하고 있다.

• 대한인간공학회지
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• 제29권2호
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• pp.225-239
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• 2010

A high prevalence of farmer's work-related musculo-skeletal disorders (MSDs) have been reported in precedent studies. Risk factors - physical, chemical, biological, ergonomic risk factor etc. - in farm-work were identified by previous studies. To prevent farmers from exposing to them and reduce, Agricultural Safety Technology were introduced and used on farm. The purpose of this study is to review and summarize the agricultural safety technology on farm in Korea. According to strategy principles, this technology is classified as four criteria - workload reduction by reducing awkward posture, workload reduction by using manual material handling aids, Comfort improvement by protecting worker from hot, cold environment and work efficiency improvement by workplace redesign and cultivation modification. This technology includes transporting tools, working cloth, personal protective equipment, and pesticide-proof Clothing. Anthropometric study of Korean farmers was also carried out to support the development of equipment and clothes. In long terms, it needs to precaution activity from risk factors by using cultivation modification and working improvement. Although working condition gets better and workload reduce by this technology, it required customized safety technology in each crops - rice cultivation, horticulture and livestock farming. And farmers should use the assistive technology and participate voluntarily in ergonomic intervention program.

• 한국철도학회논문집
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• 제10권2호
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• pp.161-166
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• 2007

Recently, The business environment is very rapidly changed and complicated. Therefore, the companies are confront with the biggest difficulty. To overcome this difficulty, the management should be able to accomplish the human resources management and the efficient business management. Korea railroad industry has a close association with national life as it carries out public works based on its public nature as well as purses the corporate spirit. For that reason, Korea railroad industry has a great spin-off on national economy and exerts a tremendous impact on the improvement of productivity around the industries and the international competitiveness at aspect of efficiency resulting from business rationalization. Railroad system can be described as organic. Railroad Employs take a great role in this system. According the psychology and the Organization Behavior, the decision maker's personality and employee' work satisfaction have influence on performance. The purpose of this study is to examine the Railroad Employs' Personality and Work satisfaction which influence on the efficient business management.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1994년도 추계학술대회 논문집
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• pp.125-130
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• 1994

Recently,manufacturing work been transformed to small acale production from with various items to act up to user's expectation from mass production with a little items required in the past. The FMS using NC type mother machinaries has been applied actively also in domestic manufacturing line to meet thus tendancy, but there are many machining troubles occured in work process not be settled yet. Nowdays high efficiency has been required no less than high precision in grinding work for the improvement of productivity. In this study, to represent more advanced FMS can be adapted to thus situation In-process type monitoring method using AE and Current sensors is suggested to investigatethe machining condition in grinding process. As results from this experimental study, is is recoqnized well that grinding conditions and dressing point of in time can be estimated effectively using monitoring method suggested. Furthermore, surface shape of grinding wheel on voluntary point of in time can be predicted indirectly through the observation and comparison of AE signal waveform obtained as performance of continuous dressing work.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 추계학술대회 논문집
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• pp.1268-1275
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• 2005

The computerization works and environment have been changed from simple transaction and data process request to system connection request, from data computerization to application work automation and process computerization through IT development and Internet spread. Recently, BPM(Business Process Management) concept has been widely propagated. It is expanding interest of business subject. Korea Railroad is operating train operation management system through 5 regional headquarters and organizations under the influence of each regional headquarter. But integrated operation and management of communication each department, work flow management and resources of depot equipment and materials have to need a lot of effort and time in huge organization as Korea Railroad. Therefore, this article realized Web Based BPM Group Ware. This article will define Korea Railroad organization and business process in using this Group Ware. And it will introduce Korea Railroad computer manage system of this Group Ware and efficient Korea Railroad Business Process through modeling and operating department work and resources management in Korea Railroad.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.94-99
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• 2011

EMU(Electric Multiple Unit) of Seoul Metro are equipped with air conditioning and six line flow fans for air circulation. In summer, the air conditioning and line flow fans usually work at the same time. Recently, high oil price leads more people to use public transportation, which in turn makes them feel hotter inside the rolling stocks and complain about air conditioning state. In order to improve indoor air quality in summer, it is inevitable to increase the cooling capacity of air conditioners, which costs a lot of money. Thus, we need to raise cooling efficiency by rearranging existing devices effectively. In this study, we found a better way to improve refreshment inside the trains by changing the operation method of line flow fans and door opening systems. The results will help improve the cooling efficiency of EMU in summer. Also, more precise experiments and analyses of our data can lead to various methods to increase energy efficiency.

• International Journal of Automotive Technology
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• 제8권3호
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• pp.361-373
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• 2007

In previous work, an approach based on maximizing the efficiency of an internal combustion engine while ignoring the power conversion efficiency of other powertrain components, such as the electric motor and power battery or ultracapacitor, was implemented in the steady-state optimization of an internal combustion engine for hybrid electric vehicles. In this paper, a novel control algorithm was developed and successfully justified as the basis for maximal power conversion efficiency of overall powertrain components. Results indicated that fuel economy improvement by 3.9% compared with the conventional control algorithm under China urban transient-state driving-cycle conditions. In addition, using the view of the novel control algorithm, maximal power generation of the electric motor can be chosen.

• 마이크로전자및패키징학회지
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• 제21권3호
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• pp.37-41
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• 2014

본고에서는 태양광 조명 시스템 중 태양을 추적하며 오목한 형태의 반사경으로 태양광을 집광하고, 전기에너지로 변환과정 없이 그대로 조명으로 사용하는 시스템의 효율 향상에 관해 다뤘다. 반사경 및 렌즈들의 초점거리, 위치 등에 따라 시스템 전체의 효율이 크게 좌우되고, 제품의 조립 및 제작 과정, 외적 환경요인 등에 의해 렌즈 및 거울간의 정렬 상태가 집광효율에 상당한 영향을 준다. 시뮬레이션을 통해 최대효율을 내기 위한 convex lens의 위치를 확인하였다.

• 설비공학논문집
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• 제27권8호
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• pp.440-447
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• 2015

In the shipbuilding process, the confined work spaces of the ship are formed continuously; the ventilation method can therefore be limited to dilution ventilation due to the complex structure and limited opening of the confined space. Also, it is difficult to evaluate air-quality using measurement and an adequate ventilation method. CFD simulation methods are typically used in analyzing ventilation efficiency in these cases. In this study, a method is suggested to analyze the air quality of the complex enclosures in shipbuilding using CFD. Especially, among the conventional indices, the ventilation efficiency scales or indices, the supply air contribution (SVE4), and the age of the air (SVE3) (fit for the confined and complex enclosure) were applied.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.427-432
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• 2004

최근 건설시장의 경쟁이 치열해지고, 건설생산성을 향상시키는 것이 기업의 경쟁력 확보라는 인식이 높아짐에 따라 건설업에서도 생산성과 효율성에 대한 관심의 풍요도가 증대되고 있다. 본 연구에서는 기존의 생산성 측정 방식을 활용한 사례조사를 통해 생산성을 측정하고 측정된 내용에 근거하여 작업개선사항을 제시하였다. 제안된 개선사항은 시뮬레이션(simulation)기법을 동해 검증하였다. 본 논문의 의의는 생산성 측정을 분석하는데 있어 시뮬레이션 기법이 현장여건을 모두 고려한 최적의 대안은 아니지만 현장관리자로 하여금 상황에 적합한 최적의 작업방식을 선택하게하고 생산량을 예측할 수 있는 방법을 제시했다는 점에 있다.