• Journal of Nutrition and Health
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• 제26권3호
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• pp.357-366
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• 1993

The purposes of this study were to investigate the operational affecting productivity in hospital foodservice, and to examine the relationships between operational factors affecting productivity. The 28 hospitals over 400 beds in Seoul were mailed questionnaires assessing the factors that affect productivity in hospital foodservice(23 hospitals responded). Data analyses included descriptive statistics. Pearson product moment correlation analysis, and stepwise multiple regression analysis. The result of Pearson product moment correlation analysis indicated that the percentage of patient meals was significantly correlated to the productivity (r=.5560, p<.01). Stepwise multiple regression analysis indicated that the percentage of patient meals and the average work hours of employees were significant predictors of the operational factors at productivity.

• 한국식품조리과학회지
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• 제11권3호
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• pp.295-302
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• 1995

The purposes of the study were to identify the operational characteristics in employee feeding facilities, and to examine the correlations of productivity and these characteristics. A questionnaire was developed and mailed the 500 dietitians in employee feeding facilities in Seoul and Kyoungki Do. Usable questionnaires were received from 117 respondents for a response rate of 23.4％. The questionnaire was designed to determine the productivity index and to investigate the relationship between operational characteristics and productivity index. The questionnaire was contained 2 parts with a total of 16 statements. Data were analyzed for descriptive statistics and Pearson correlation analysis using SPSS/PC programs. The average productivity indices of 117 facilities were 6.91 meals/hr. Total meals served/week was significantly correlated to the productivity index (r=0.441, p < 0.001). No of average servings per meal, percentage of convenience food use, average minutes for service/day, and employment in professional practice of dietitian were also positively correlated, while food cost was negatively correlated to the productivity.

• 경영과학
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• 제21권2호
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• pp.111-122
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• 2004

Measuring performance of corporate information system has become one of the core issues in that development of the information system requires substantial amount of investments and the system works as a crucial leverage to enhance competitive edge. Most of the previous researches for performance of the information system have narrow and limited focus on such as the effect of user satisfaction and productivity. This paper suggests a model to measures the comprehensive performance which is classified as user scope (user involvement and satisfaction), operational scope (task productivity, task innovation, customer satisfaction, management control) and efficiency scope (financial performance), and to represent the relationship among the scopes by the path analysis model. Followings are conclusions from statistical hypothesis test of the model: (i) user involvement through user satisfaction has positive effect on all the performances in the operational scope, (ii) task innovation and customer satisfaction in the operational scope has statistically significant impact on financial performance but task productivity and management control do not. This conclusion indicates that task productivity and management control has the long term effect in nature, and evaluation of the information system has managerial implication when it Is measured in comprehensive performance which includes internal operational performances as well as financial performance.

• 한국항해항만학회지
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• 제46권6호
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• pp.547-553
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• 2022

본연구는 2019~2021년 14개 국적 외항 컨테이너 선사의 생산성 변화를 MPI(Malmquist Productivity Index)를 통해 분석하였다. 분석 기간 14개 선사의 MPI는 연평균 38.4% 증가한 것으로 분석되었다. MPI 변화 원인을 살펴보면, TCI(Technical Change Index)는 연평균 58.3% 증가하였으나 TECI(Technical Efficiency Change Index)는 연평균 12.6% 감소한 것으로 나타났다. 이는 선박의 효율성 또는 선대 규모 확대 효과보다는 운임상승에 의한 생산성 향상이 주원인임을 의미한다. 원양 해운선사인 HMM과 SM상선은 타 선사(아시아 역내 선사)와 달리 TECI와 TCI가 모두 생산성 향상에 긍정적인 영향을 미친 것으로 나타났다. 반면, 아시아 역내 선사의 경우 TCI(i.e. 운임상승) 값의 증가에 의한 생산성 향상이며, TECI값 중 SECI(Scale Effieicency Change Index) 값이 낮아 이들 선사는 선대 규모(규모의 경제) 변경에 따른 비용 절감 효과를 거의 누리지 못한 것으로 분석되었다.

• 수산경영론집
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• 제51권1호
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• pp.19-36
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• 2020

The purpose of this paper is to analyze the productivity of the costal fisheries in Jeonnam Province. In this study, the operational characteristics and Cobb-Douglas production function of coastal fisheries were examined based on a research on the actual condition of costal fisheries (RACF). The statistical analysis of RACF data reveals that Cobb-Douglas production function consists of the three variables: fishing quantity per ton-age, the number of fisherman per ton-age and fishing equipment cost per ton-age. The results of this study show us that the relation and productivity between labor and capital of the operational equipment in the coastal fisheries. If extensive comparable biological and market data become available, analysis model can be widely applied to yield more accurate results.

• 수산경영론집
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• 제53권1호
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• pp.1-16
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• 2022

This paper aims to propose a new systematic approach to analyze the factor productivity and to investigate those characteristics of factor productivity in operational and managerial perspectives. The Cobb-Douglas production function is adopted to estimate the labor and capital productivity. In estimating those productivities the data of The Research on the Actual Condition of Coastal Fisheries (RACF), especially those of Jeon-Nam Province are used. The statistical analysis of RACF data shows that the characteristics are a little bit different between labor and capital of the operational equipment in the coastal fisheries. The Cobb-Douglas type production function is useful in estimating the factor productivity, especially in case of 'coastal Stow-net fishery' even though the limited data is used. However, in case of 'trap fishery,' the Cobb-Douglas production function appears to have some limitations in estimation. This implies that estimating the factor productivities in fisheries employing broad perspectives and various methods are needed.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.639-640
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• 2015

Traditional construction planning based on historical data and heuristic adjustment can no longer incorporate all the operational details and guarantee the expected performance. The variation between the expected and the actual production leads to cost overruns or delay. Although predicting reliable productivity on construction site is getting more important, the difficulty of this increases. In this regard, this paper suggested to develop BIM-integrated simulation framework. This framework could predict productivity dynamics by considering factors affecting on construction productivity at operational phase. We developed the following processes; 1) enabling a BIM model to produce input data for simulation; 2) developing the construction operation simulation; 3) running simulation using BIM data and obtaining productivity results. The BIM-integrated simulation framework was tested with structural steel erection model because steel erection work is one of the most critical process influencing on the whole construction budget and duration. We could improve to predict more dynamic productivity from this framework, and this reliable productivity helps construction managers to optimize resource allocation, increase schedule reliability, save storage cost, and reduce material loss.

• 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 $won/m^3$.

• KIEAE Journal
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• 제10권1호
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• pp.45-55
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• 2010

While Korean construction companies are adapting themselves to rapidly changing business landscape at home and abroad, intensifying competition among competitors in local as well as global market deteriorates the profitability of construction industry, which leads to another problem. In response to such challenges, many construction companies continue to innovate their business portfolio and organization structure, with strong commitment to business process innovation. Furthermore, they need to analyze the productivity of project site management manpower overhauling business processes systematically and develop effective alternative strategies. This research aims to analyze the productivity of project site management manpower. Current operational practices of construction site organizations have been analyzed with focus on large construction companies in Korea and data gathered from project sites have been analyzed from a wide range of perspectives, In so doing, this research is expected to provide basic inputs for any subsequent attempt to estimate proper resource requirement for site management tasks in construction projects and analyze the management productivity of such resources by enabling construction companies to better understand the current operational status of site organization.

• 한국산림과학회지
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• 제103권4호
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• pp.583-592
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• 2014

본 연구는 현재 우리나라의 주요 임업기계를 이용한 임목수확작업시스템에서 벌목 및 조재, 집재, 소운재, 파쇄 등의 목재생산 및 파쇄작업에 대한 작업시간 및 공정을 분석하여, 산림바이오매스 이용을 위한 효율적인 임목수확작업시스템의 구축하기 위한 기초자료를 제공하고자 수행하였다. 1회당 주체작업시간은 체인톱에 의한 벌목 및 조재작업은 조사지 1(벌목 및 조재:체인톱, 소운재:굴삭기 그래플 및 소운재용 트럭)과 조사지 2(벌목 및 조재:체인톱, 집재:타워야더, 소운재:굴삭기 그래플 및 임내작업차)에서 각각 182.7초/회와 518.5초/회로 나타났다. 트랙터 부착형 집재기에 의한 집재는 202.5초/회, 타워야더에 의한 집재는 295.1초/회로 나타났다. 소운재용 트럭(일명:영운기)에 의한 소운재작업은 2,073초/회, 임내작업차에 의한 소운재작업은 2,248.4초/회로 나타났다. 체인톱에 의한 벌목 및 조재 작업공정은 조사지 1과 2에서 각각 평균 $66.96m^3$/인${\cdot}$일과 $43.86m^3$/인${\cdot}$일으로 나타났다. 트랙터 부착형 집재기에 의한 집재작업공정은 평균 $5.68m^3$/인${\cdot}$일으로 나타났으며, 타워야더에 의한 집재작업공정은 평균 $10.74m^3$/인${\cdot}$일으로 나타났다. 소운재용 트럭(영운기)에 의한 소운재작업공정은 평균 $21.29m^3$/인${\cdot}$일으로 나타났으며, 임내작업차에 의한 소운재작업공정은 평균 $28.57m^3$/인${\cdot}$일으로 나타났다. 또한, 소형 목재파쇄기에 의한 파쇄작업공정은 $4.42m^3$/인${\cdot}$일으로 나타났으며, 대형 목재파쇄기에 의한 파쇄작업공정은 $21.87m^3$/인${\cdot}$일으로 나타났다.