• 한국건축시공학회지
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• 제9권3호
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• pp.79-85
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• 2009

Labor productivity issues within the construction industry are receiving increasing attention. With the improvement in the standard of living, domestic laborers are avoiding 3D(Difficult, Dirty, and Dangerous) jobs by degrees. Because of this situation, the problem of insufficient labor is exacerbating in several basic industries. In particular, insufficient labor is a serious problem in the construction sector, where the workers are ageing and labor costs are increasing. In this study, we adopt a systematic approach to identify factors that influence labor productivity and analyze the causality between the factors and their ripple effects with the aim that the results of the study will help improve labor productivity and ensure its effective management. The established labor productivity model using systems thinking will get a footing in the greatest strategy in the construction industry.

• 대한약침학회지
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• 제6권3호
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• pp.39-47
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• 2003

Background & Methods : In order to measure the acute and subacute toxicity of Vermilionum and it's anti-cancer effects, Sarcoma-180 abdominal cancer cells were injected intravenously. The following results were obtained after measuring the survival rate, toxicity of the NK cells, and IL- 2 productivity. Results : 1. It was impossible to measure $LD_{50}$ value in the acute toxicity test and no toxic effects were witnessed in the clinical observation. 2. No significant differences were shown in the weight changes between the experiment groups and the control group in the acute toxicity test. 3. No peculiar toxic effects were shown in the subacute toxicity test and the weight changes were insignificant between the experiment groups and the control group. 4. In measuring the survival rate after inducing abdominal cancer by Sarcoma-180, the experiment groups showed increased of 9.52% compared to the control group. 5. In measuring the activity of NK cells, no significant changes were shown between the experiment groups and the control group. 6. In measuring the productivity of IL-2, significant reduction was shown in the experiment groups compared to the normal group, but no significance was witnessed compared to the control group.

• 한국산학기술학회논문지
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• 제14권10호
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• pp.4784-4790
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• 2013

세계화가 빠르게 진전되면서 한국 기업들의 오프쇼어링 비중도 커지고 있다. 기존 연구들의 경우 오프쇼어링의 효과보다는 기업이 오프쇼어링을 선택하는 결정요인을 분석하는데 집중하고 있다. 따라서 본 논문은 오프쇼어링이 한국 기업의 생산성에 미친 영향에 대해 정량적으로 분석했다. 이를 위해 통계청의 기업활동조사를 기반으로 기업수준의 패널데이터를 이용해 합동 최소자승법과 고정효과 패널모형을 통해 분석했다. 기존 연구와는 달리 서비스업을 제조업과 구분하여 오프쇼어링의 영향을 추정하였으며, 두 산업 간의 결과를 비교하였다. 합동 최소자승법 결과에서는 전체 기업의 오프쇼어링 비중이 1% 증가할 때 노동생산성은 0.03% 증가하는 것으로 분석되었다. 그러나 고정효과 패널모형 결과의 경우, 오프쇼어링이 기업의 노동생산성에 주는 효과가 유의하게 추정되지 못했다. 모든 모형에서 오프쇼어링이 제조업 생산성에 긍정적 영향을 미치는 것으로 추정되었다. 서비스산업의 경우 고정효과 패널분석 결과에서 오프쇼어링이 생산성에 미치는 영향이 부정적으로 추정되었으나 유의하지는 않았다. 자본과 R&D비용 등 기업의 생산성에 영향을 주는 다른 설명변수들은 서울에 본사가 있는가 여부에 대한 더미변수를 제외하고 대부분 생산성 향상에 기여한다는 결과를 얻었다.

• The Journal of Asian Finance, Economics and Business
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• 제6권3호
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• pp.131-140
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• 2019

The study aims to examine the impact of productivity in addition to the policy of increasing the foreign investors' ownership rate on the performance of businesses which were listed on Vietnam's stock exchange market from 2010 to 2017. With the database of 3.961 observations, the study employs a statistical method - multiple regression to estimate the relationship between labor productivity, foreign ownership as well as other firm-level characteristics and firm performance. Research findings show that increasing labor productivity and increasing foreign ownership rates help increase firm performance. In addition, except for financial leverage, variables such as liquidity and firm size have positive effects on firm performance measured by Tobin's Q. These findings have theoretical contributions and practical implications for managers, investors and government in Vietnam. Managers should pay attention to improving labor productivity through employing incentive mechanisms, building a good working environment, investing in technology, etc. in order to enhance the firm performance. Investors could utilize the labor productivity and foreign ownership indicators to select stocks of good companies for investment. For Vietnamese government, relaxing the limit of foreign ownership and accelerating the divesting of State capital in State-owned enterprises could help increase the investment scale of foreign investors and resulting in positive effects on the firm performance.

• 통상정보연구
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• 제12권4호
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• pp.67-109
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• 2010

The theory of creative class has shown that the creative people are the key factor of success in regional economic growth. The creative people strengthen the economic competitiveness which is crucial to attract, cultivate and mobilize the resources of that region. In order to examine the theory of creative class for regional economic growth and firm productivity in Korea, this study uses the panel data of 492 Korean firms of the industrial complex producing electic and electronic manufactured goods. They are grouped into 10 industrial complexes among 16 metropolitan areas. Our findings demonstrate that creative class and 3Ts are related to the ratio of creative population density and the regional economic growth. Specifically the creative core class is of more significance to the regional economic growth than the creative professional class or the creative artist class. In our findings the panel analysis of random effects model shows that the talent index of 3Ts as well as the regional climates arc related to the individual firm's total factor productivity. This also reflects a conglomeration of the other regional climates statistically. On the other hand, the research and development expenditure of individual firms shows positive influence for each second consecutive year for the total factor productivity. Sales volume also contributes to the total factor productivity. In conclusion, we recommend that it is important to upgrade the level of creative climates by attracting the creative minds and R&D investment of the enterprises for regional economic growth and firm's total factor productivity.

• 융합정보논문지
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• 제12권5호
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• pp.278-289
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• 2022

본 연구는 미용종사자의 업무가치감이 직무만족을 매개로 서비스 생산성에 미치는 영향을 실증적으로 분석한 연구이다. 연구결과 서비스 생산성에 영향을 미치는 요인을 실시한 결과는 업무가치감이 높고, 직무만족이 높을수록 서비스생산성이 높아짐을 알 수 있다. 또한 가치충족인식, 내재적만족, 업무가치인식, 자기가치인식, 외재적 만족이 높을수록 서비스생산성이 높아짐을 알 수 있었다. 또한 미용종사자의 업무가치감이 직무만족을 매개로 서비스향상에 미치는 영향을 알아본 결과 |Z|=15.057로 Z값이 1.96보다 큰 값을 보여 sobel test에서도 직무만족의 매개효과는 유의한 것으로 나타났다. 본 연구 결과를 토대로 미용종사들이 스스로 자신의 업무가 의미있고, 가치 있으면 보람되다고 인지할 수 있도록 내적동기를 상승시키고 일 자체에서 오는 만족감, 내재적 직무만족을 향상시킴으로서 서비스 생산성을 극대화 시킬 수 있을 것으로 기대한다.

• 경제분석
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• 제25권3호
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• pp.1-29
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• 2019

본고에서는 OECD 회원국(2018년 현재 총 36개국) 중 29개국을 대상으로 상용직·임시직 고용비중 변화가 노동생산성에 미치는 영향을 실증 분석하였다. 이 때 자영업자도 함께 고려함으로써 상용직 및 임시직 대비 노동생산성을 비교하였다. 구체적으로는 1990-2015년 동안 OECD 29개국의 국가별 불균형(unbalanced) 패널자료를 이용하여 통상최소자승법(OLS), 고정효과(fixed effect) 분석, 일반화된 적률법(이하 GMM), 동태적 패널 GMM 등 다양한 방법으로 고용형태 변화가 노동생산성에 미치는 영향을 추정하였다. 분석 결과를 보면, 각 추정 방법에 따라 약간 차이는 있으나 상용직 비중 증가가 노동생산성 증대에 미치는 영향이 가장 높았으며 그 다음이 자영업, 임시직 순으로 나타났다. 특히 임시직 근로자 비중이 노동생산성에 미치는 영향은 상용직에 비해 상당 폭 낮은 것으로 추정되었다. 이러한 결과는 노동시장 이중구조가 심화되면 노동생산성에 부정적 영향을 미칠 가능성이 있음을 시사한다.

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.619-627
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• 2020

This study measures the relationship between labor productivity and national competitiveness. Through the shift- share analysis method, the paper has separated labor productivity into three factors: static shift effect, dynamic shift effect and endogeneous effect. Next, in combination with the Granger causality test, the paper examines the relationship between the factors constituting labor productivity and competitiveness during the period from 2005 to 2017. Research data is collected from General Statistics Office and annual global competitiveness reports. The results show that the interaction between labor productivity with global competitiveness index (GCI) in Vietnam has similar variation. Nevertheless, when separating labor productivity into three effects, this relationship shows more clearly that the impact of labor productivity on GCI scores is mainly caused by endogeneous effect, not by static shift effect or dynamic shift effect. Therefore, in order to improve its competitiveness, Vietnam should focus on a number of solutions: reforming the education system towards developing thinking capacity and creative capacity; fostering industrial manners to create dynamic and flexible workers; building the State with sufficient capacity to implement consistent and transparent policies; formulating policies to attract all economic sectors so that they actively participate in the field of human resource training for the country.

• The Journal of Asian Finance, Economics and Business
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• 제6권2호
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• pp.63-73
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• 2019

The paper aims to investigate relationships between technology and innovation management, total factor productivity and economic growth in China. By comparing the trends in total factor productivity growth of industrialized economies (i.e. OECD), this study intends to showcase the importance of total factor productivity progress in the Chinese economy. The study employs time series data of an annual basis for the period from 1977 to 2016 retrieved from the World Development Indicator. The study employs unit root test, cointegration test, fully modified least squares estimation method, canonical cointegrating regression and dynamic least squares estimation method to test the hypotheses. The results of the cointegrating regression analysis show that manufacturing growth leads to an increase of total factor productivity in the short-run in China. The findings of the study suggest that manufacturing (i.e. technology and product innovation) is positively related to the increase of total factor productivity in the short-run and total output growth in the long-run. The findings suggest that promoting technology and innovation management and supporting R&D subsidies may reduce the marginal cost of conducting R&D and increase the rate of technology and innovation management and R&D activity and therefore, the total factor productivity growth rate.

• Ocean and Polar Research
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• 제43권4호
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• pp.295-306
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• 2021

A field scale productivity analysis is required for the development of gas hydrate in marine sedimentary layers to verify the field applicability of production techniques and to improve productivity. In this study, the productivity resulting from the application of depressurization using multi-wells for the development of gas hydrate in the Ulleung Basin, East Sea of Korea, was determined. A numerical analysis model reflecting the conditions of candidate sites for the Ulleung Basin was constructed, and the productivity and dissociation behavior were comparatively analyzed. The pressure propagation and gas hydrate dissociation region by the multi-wells were wider and the productivity was higher than that of a single well. Different depressurization effects according to the spacing of multi-wells affected productivity. The results provide basic data for productivity analysis when establishing a field test production plan for the Ulleung Basin.