• 한국초지조사료학회지
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• 제38권3호
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• pp.150-155
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• 2018

This study was conducted to determine grazing intensity of growing Korean native goats(Capra hircus coreanae) on mountainous pasture. It was carried out to obtain basic information for improvement of mountainous pasture management and establishing feeding system of Korean native goat. A total of 20 goats were grouped by feeding systems [A mountainous pasture grazing group (Concentrated feed of 1.5% body weight, treatment 1, T1, n=10) and a barn feeding group (TMR, treatment 2, T2), n=10] to conduct study from April to September. The average forage productivity of the mountain pasture was $500.9{\pm}61.41kg/ha$. The average dry matter intake in T1 was 0.64 and the calculated grazing intensity was 21 head/ha. In productivity, when the two treatments(T1, T2) were compared, the dry matter intake was about two to three times the difference. The average daily gain per day during the experiment was 63.3 in the mountain pasture and 120 g in barn feeding. When grazing, considering mountainous pasture productivity it is necessary to increase the productivity through proper feeding. The feed costs of black goats raised by grazing on the grassland in the same period showed an average 75% reduction compared to barn feeding. As a result of this study, it can be expected that a considerable reduction of feed costs can be expected in the breeding of Korean native black goat using the mountain pasture.

• 한국융합학회논문지
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• 제8권11호
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• pp.393-401
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• 2017

최근 스마트워크를 도입했던 선도 기업들이 스마트워크를 축소하거나 폐지하는 사례가 나타나고 있다. 스마트워크는 직무만족에 긍정적으로 작용하며, 직무만족은 생산성의 향상을 가져올 것이라는 기존 연구들의 예측에 대한 의구심이 제기되고 있다. 따라서 본 논문에서는 스마트워크와 직무만족 및 생산성 간의 관계를 재검토하고자 한다. 이를 위해 한국과학기술정보센터의 NDSL 데이터베이스를 기반으로 스마트워크와 관련된 8건의 문헌을 선정하여 체계적으로 분석하였다. 선행 연구들에서는 스마트워크는 직무만족에, 직무만족은 생산성 향상에 긍정적인 영향을 미치고 있음을 실증하고 있었다. 하지만 기존 연구에서 스마트워크가 직무만족을 가져다준다는 실증이나 직무만족 개념에 대한 정의와 측정 등에서 문제의 가능성이 있음을 발견하였다. 이와 관련하여 본 연구는 스마트워크와 직무만족, 그리고 삶의 만족과 직무만족에 대해 심층적으로 논의하고, 향후 연구 방향을 제시하였다.

• Journal of Forest and Environmental Science
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• 제30권1호
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• pp.107-112
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• 2014

The productivity and cost of clear cutting operations were examined to broaden our knowledge on the harvesting system in a Larix leptolepis stand of Korea. The harvesting system was divided into tree operations which were chainsaw (STIHL MS440) felling, tower yarder (Koller301-4) yarding and harvester (WOODY H50) processing. The average cycle time of felling, yarding and processing were 98 s/cycle, 245 s/cycle and 150 s/cycle. The total stump-to-pile operational productivity was 43.07 $m^3/hr$. The highest production activity was the felling 17.93 $m^3/hr$, followed by the productivity of processing 15.62 $m^3/hr$ and then by the productivity of yarding 9.52 $m^3/hr$. In addition the total stump-to-pile operational cost was 24,086 $won/m^3$. The highest cost activity was the yarding 14,557 $won/m^3$ (60.4% of the total cost), followed by the costs of processing 8,461 $won/m^3$ (35.2%) and then by the costs of felling 1,068 $won/m^3$.

• 품질경영학회지
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• 제44권4호
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• pp.771-784
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• 2016

Purpose: The purpose of this study is to analyze the efficiency and productivity of the quality by integrating the product quality and service quality of global automobile brands from the customer's perspective. Methods: In this study, the data from JD Power and GoodCarBadCar.net were used to analyze the efficiency and productivity of a total of 24 automobile brands (10 luxury brands and 14 mainstream brands) between 2009 and 2013. For this, DEA (Data Envelopment Analysis) and MPI (Malmquist Productivity Index) were used. Results: The mean efficiency of the quality of global automobile brands were 0.725 for luxury brands and 0.587 for mainstream brands, which suggests generally higher efficiency for luxury brands. The productivity of the quality of global automobile brands increased by 16.1% for luxury brands while it decreased by 3.1% for mainstream brands. Conclusion: The study provides a theoretical implication in that it emphasized the efficiency of the quality viewed from the customer's perspective, and investigated the quality of the product and that of service in an integrative manner. In addition, this study provides also a practical implication in that it suggests how to set the sales goal by the brand and how to manage according to the characteristics of the brand to the managers of automobile manufacturers.

• 보건행정학회지
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• 제10권3호
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• pp.169-187
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• 2000

Cigarette smoking has been identified as the most important source of preventable morbidity and premature mortality (WHO, 1995), The prevalence of smoking among men is very high in Korea. This study estimated productivity losses due to smoking in Korea, 1997. The derivation of cost estimates for mortality, disability, hospitalization and use of physician services related to cigarette smoking is bas 어 on the calculation of attributable fractions suggested by MacMahon and Cole and Smoking-Attributable Mortality, Morbidity, and Economic Cost(SAMMEC) software. To estimate the number of deaths from neoplastic, cardiovascular, respiratory diseases associated with cigarette smoking, estimates for adults(aged 20 years and over) were based on 1997 mortality data, 1995 data on smoking prevalence from Korea Institute for Health and Social Affairs. Smoking-attributable indirect morbidity cost data were obtained from the National Federation of Medical Insurance. As the result of cost estimation, these productivity losses were 336-430 billion won. During 1997, 8,620-10,804 deaths were attributed to smoking. Cigarette smoking resulted in 133,991-169,422 Years of Potential Life Lost (YPLL) to life expectancy. For smoking -attributable indirect mortality costs, the present value of future earnings(PVFE) for the age at death are 299-384 billion won. Smoking-attributable indirect morbidity costs, the costs of lost productivity for persons who are disabled by smoking-related chronic diseases are 37-46 billion won. In this study the productivity losses due to smoking were restricted to the health effects of smoking. It is possible that these costs were underestimated with the limitation of the data. Smoking is the leading preventable cause of illness and death. The results of this study can be used as elementary data for antismoking policy.

• 산업진흥연구
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• 제1권2호
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• pp.49-54
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• 2016

본 연구는 중소제조업의 체계적 문서화가 생산성에 미치는 영향을 분석하였다. 연구결과 문서화 업무체계 확립은 불량감소(p<.01)와 설비가동률 향상(p<.05)에 영향을 미쳤으며 문서화 교육훈련 정도는 불량감소(p<.05)와 생산성 향상(p<.01)에 유의한 영향을 미쳤다. 문서화 경험은 생산성 향상에 유의한 영향을 미치지는 못했다. 즉, 문서화 업무체계가 높을수록 불량감소, 설비가동률 향상 정도가 높으며 문서화에 대한 교육훈련이 잘 되어 있을수록 불량감소, 생산성 향상의 긍정적 효과를 보이고 있어 중소제조업은 문서화의 경험적 측면에 의존하기 보다는 문서화 업무체계를 확립하고 교육훈련을 실시하여 생산성을 높이기 위한 노력이 필요한 것으로 나타났다. 본 연구는 중소제조업의 체계적 문서화가 생산성에 미치는 영향을 분석함으로써 불량감소, 생산성향상, 설비가동율 향상에 대한 문서화 요인의 중요도를 파악하고 품질관리 측면에서 문서화의 효과를 검증한 데 연구의 의의가 있다.

• 한국건설관리학회논문집
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• 제15권4호
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• pp.30-38
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• 2014

시공성에 대한 연구는 활발히 진행되어 왔으며 시공성이 공기, 원가, 품질, 생산성을 높인다고 다양한 연구에서 언급하고 있다. 그러나 실제 시공성이 생산성에 미치는 영향을 정량적으로 분석한 연구는 사례조사나 설문을 통한 결과가 대부분이여서 미흡한 실정이다. 또한 시공성에 관한 연구가 세부 특정 공정의 시공성을 높이기 위한 것들이 대부분이여서 다양한 공종에 적용하기에는 다소 hard하다고 할 수 있다. 따라서 본 논문은 시공성에 영향을 주는 인자들을 도출하고 이 요인들이 각 공종의 시공성에 미치는 영향도를 분석한 후 실제 공사 데이터를 가지고 시공성 요인이 생산성에 미치는 영향을 검증하여 기존 연구에 대한 뒷받침이 되고자 한다.

• 보건행정학회지
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• 제3권2호
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• pp.1-24
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• 1993

The purpose of this study is to analyze the effects of the health information system on the productivity and behavioral aspects of health workers as well as quality of services to the visitors using the Vaccination room at the Kwon Sun Ku health center located in Suwon city as a study subject. Three survery were conducted to measure the changes in productivity and adoptation process(knowledge, attitude, activity, and satisfaction) of health workers over time during the period of 20 months. In addition, the effects of the information system on the quality of services to the visitors were also masured 7 months after the 3rd survey by comparing the quality of services between the study health center and the similar health center as a control group. The following results were obtained. First, productivity of health workers has improved over time as they became familiar with the system. Second, knowlege and activity did not significantly changed, but attitude score unexpectly decreased in the second survey. This may be due to an effect of intensive training prior to the first survery. Third, quality of services for the study center was better than other health center. While the health information system had positive effects on the productivity as well as the adoptation process, there are several limitations to establish a causal effect relationship between the two variables. For example, the system has kept modified since its development to meet the changing needs of the workers, and this may affect the productivity more than the adoptation process. Furthermore, since the study subject was only one health oenter, it lacks representativeness to generalize the study findings. Therefore, more health centers should be included in the study to solve such problems in the future.

• 대한안전경영과학회지
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• 제17권1호
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• pp.265-270
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• 2015

In industrial society, the core competency of company was depend on the productivity. However the knowledge information era of the 21st century, the market power moved to downstream, the core competency of company is moved from productivity to how to make the products meet the market. Inventory was the burden of the company management. Most of company trying to reduce the inventory. In this study, analyze the impact of inventory to company's operating profit and the impact of distribution center consolidation to total inventory of company.

• 대한안전경영과학회지
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• 제12권1호
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• pp.71-81
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• 2010

Today's fierce competition and global economic recession make most of manufacturing companies in the world difficult to gain a profit. In order to survive such a environment and increase competitiveness, manufacturing companies have to continuously eliminate their wasteful factors through an efficient process analysis, improve quality of products, increase the flexibility of manufacturing processes. In this paper, we consider a case study for the Shanghai New Auto which is a subcontractor of MOBIS in China, to improve productivity by using therblig method, one of the motion analysis, to minimize the work-in-process inventories and to shorten the manufacturing cycle times. We also try to relocate the facility layout to increase the efficiency and flexibility of manufacturing processes.