• 대한안전경영과학회지
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• 제12권2호
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• pp.113-123
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• 2010

The goal of this study is to analyze an effect of productivity elevation. For the goal, the various methods of the productivity elevation were suggested and the system improvements were conducted. The S company was established in Ban-Wol Industrial Complex, Ansan-City, Kyonggi-Do on 2007. The company was hiring 22 employees. The main manufactures were heavy duty equipment parts and the amount of sale was two billion won on 2008. Problems which the company faced were ambiguous production target management and materials loss. To solve the problems, NCT work improvement and automatic welding were induced. There were steel saving of 3,780,000won/month and man-hour saving of 144,000won/month by redesign of the steel sheet for the NCT steel job. Also, changing from handwork to automatic welding, the man-hour saving for the welding job was 320M/H and saving of 4,225,600won/month. The others of systematic improvement for productivity elevation were usage of jig and daily equipment checklist.

• 한국직업건강간호학회지
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• 제20권2호
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• pp.163-171
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• 2011

Purpose: This study is to investigate the job stress and presenteeism of nurses with work shift. Methods: The data were collected through questionnaires from 281 clinical nurses working for a university hospital located in D city from 13 to 28 of February, 2009. The data were analyzed by descriptive statistics, t-test, ANOVA, Scheffe verification test, Pearson correlation coefficient and multiple linear regression using SPSS/WIN 16.0. Results: The mean score of job stress was 3.47. Work overload and psychological burden scored the highest point as the sub-category of work stress factor. Work performance loss out of presenteeism showed 26.89 and perceived productivity, 79.79. Also 94.7% of respondents answered they had health problems. A significantly positive correlation was found among job stress, work performance loss and health issue. To determine the factors affecting presenteeism, work performance loss was associated with work overload and perceived productivity with interpersonal relationship conflict. Conclusion: Based on the findings of the study, job stress is positively correlated with work performance loss, and health problems. Therefore, health problems of nurses with work shift need to be considered and plans to manage their job stress affecting presenteeism need to be developed at an earlier stage.

• 한국식생활문화학회지
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• 제12권1호
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• pp.71-78
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• 1997

The productivity of a hospital foodservice system has a significant implication in hospital management as costs for labor and material increase, competitions among hospitals increase, and patients' expectations as to the quality of hospital services increase. The foodservice is characterized by its labor intensiveness. The objective of this study was to examine associations between operational and managerial factors and the productivity of dishwashing work in hospital foodservice systems. The labor productivity in 20 conventional food service systems was assessed and related to a number of influencing variables within the system. The productivity measurement was based upon the total dish equivalents as a ratio of the total direct and non-direct labor hours required to wash these dishes. 20 hospitals with more than 500 beds located in Seoul were surveyed to obtain data for study variables. Questionnaire and a survey form were mailed. Statistical methods used in this study were descriptive analysis and Pearson product moment correlation analysis. Hospital system characteristic which was found to correlate significantly with productivity was the ratio of dish loss. As this increased, the productivity level increased.

• 자원ㆍ환경경제연구
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• 제21권4호
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• pp.947-980
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• 2012

본고는 농업부문 및 국가경제에 대한 기후변화의 장기적 영향을 분석한다. 우선 작물 시뮬레이션 및 준모수적 분석법 등을 이용하여 쌀, 낙농 및 축산업에 대한 기후변화의 생산성 영향을 예측하고, 다음으로 축차적 동태 CGE모형을 이용하여 예측된 생산성 영향으로 유발되는 경제적 영향을 평가한다. 분석결과 우선 기후변화의 생산성 영향에서, 낙농 및 축산업의 경우 지속적으로 생산성이 하락하는 것으로 예측되었고, 쌀의 경우, 작물 시뮬레이션 적용 시 생산성 하락이, 준모수적 분석법을 적용 시 생산성이 상승한 후 다시 하락하는 것으로 예측되었다. 다음으로 쌀의 두 가지 예측결과를 기준으로 두 가지 시나리오를 설정하고 축차적 동태 CGE모형에 반영하여 경제적 영향을 평가한 결과, 2050년 연간 GDP 예상손실률이 시나리오에 따라 각각 0.2%, 0.02%로 나타났으며, 세부부문별로는 농업생산부문과 식품가공업, 농업용 투입재 산업, 그리고 몇몇 유통관련 산업에서 경제적 효과가 크게 나타났다. 그리고 대부분의 선행연구에서 간과되던 낙농 및 축산업 부문의 경제에 미치는 영향이 큰 것으로 나타났는데, 위 결과는 쌀부문 외 다른 농업생산부문에서의 기후변화 효과분석이 필요함을 제시한다.

• 농업생명과학연구
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• 제53권6호
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• pp.35-44
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• 2019

본 연구는 국내 가선집재 작업 현장 실태에 대한 사례 조사를 통해 작업의 생산성에 영향을 미치는 집재 작업의 설계와 가선 설치의 공학적 문제점을 파악하고, 그로 인해 손실되는 생산성과 증가되는 비용을 분석하기 위한 목적으로 수행되었다. 분석 결과, 가선집재 설계 시 현장의 지형적 입지여건과 공학적 안전성이 충분히 고려되지 않아 대부분 가선의 처짐(deflection)을 확보하지 못하는 것으로 나타났다. 이로 인해 시간 당 생산성이 최대 65%까지 감소하고, 집재비용이 2배 이상 증가되어 전반적인 작업의 효율성이 떨어지는 것으로 나타났다. 따라서 앞으로 국내에서 가선집재 작업이 확대되기 위해서는 작업 안전과 효율을 확보할 수 있는 가선의 설치와 장비의 운용, 불필요한 생산비용을 최소화할 수 있는 현장 기술의 보급이 필요하다.

• 기술사
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• 제32권6호
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• pp.40-43
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• 1999

The R&D productivity has the same meaning as that of general meaning. Its input includes budget, facility, schedule, idea and target, and its output includes patent, paper, technological innovation and revenue increase and technology accumulation influenced by these factors. The choice of R&D item which will have the large effectiveness after customization, resource input of proper level, application of efficient development schema, effective usage of development output, objective appraisal for the R&D output and extension for the future project are the main factors for which is suggested to enhance the R&D productivity. The management's expectation for R&D can be represented as the innovativeness of output and potential influence to outsiders. The speedy output, even if incremental investment more than planning happens, will eventually result in the productivity enhancement of the enterprise, and managers must not encounter the opportunity loss in return for the excessive investment control.

• KDI Journal of Economic Policy
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• 제37권3호
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• pp.31-53
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• 2015

According to the macroeconomic allocation efficiency measure, particularly based on the methodology of Hsieh and Klenow (2009), Korea's allocation efficiency in the manufacturing industry deteriorated in the 2000s compared to that in the 1990s. This study compares the potential TFP gain when resource allocation is removed, an indicator of allocation inefficiency according to Hsieh and Klenow (2009), and the productivity dispersion in the Korean manufacturing industry. It finds that the TFP gain may be better explained by TFP dispersions rather than proxies related to factors of distortion. The findings imply that we should investigate the sources of TFP dispersion rather than the sources of distortion to explain increases in the TFP gain (or TFP loss), which is considered as allocation inefficiency in the literature.

• 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.

• 상하수도학회지
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• 제19권3호
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• pp.312-317
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• 2005

The 15 month pilot study was performed to investigate the effect of pretreatment by monochloramine ($NH_2Cl$) on the performance of RO membranes made of cellulose acetate (CA) and polyamide (PA). Both RO membranes experienced severe biological fouling without any pretreatment during the treatment of highly organic surface water in Florida, USA. Feed monochloramination at 5 mg/L significantly minimized productivity loss by effective control of biofouling. The CA membrane did not show any structural damages by monochloramine, while the PA membrane suffered from a gradual loss of membrane integrity by chlorine oxidation, which was characterized as an increase in productivity and a decrease in selectivity. The degradation of PA membrane increased with increasing monochloramine dose.

• 월간산업보건
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• 통권347호
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• pp.56-65
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• 2017