• Journal of the Korean Regional Science Association
• /
• v.33 no.1
• /
• pp.3-16
• /
• 2017

This paper analyzed 16 regional total factor energy efficiency (TFEE) of the Korean manufacturing sector using data envelopment analysis method for the period of 2005-2013. According to the empirical results, it is necessary to use TFEE as well as partial energy efficiency defined by the ratio of energy usage to output (energy intensity) when we compare energy efficiency. Secondly, TFEE in the Korean manufacturing sector is quite different across 16 regions. For example, Gangwon province should improve energy efficiency by 55% compared to Seoul, Gwangju, Ulsan, and Gyeongbuk which are located on production frontier. Furthermore, the estimation of panel tobit regression model showed that the higher non fossil fuel using, the higher production share of large-sized firms, the lower energy intensity, and the lower capital-labor ratio could have positive effect on TFEE.

• Journal of Korean Philosophical Society
• /
• v.146
• /
• pp.115-135
• /
• 2018

This article attempts to deal with the problem that science and technology function as a mechanism to oppress and exploit humans rather than to release humans from labor. To explore this subject, it is necessary to consider the difference between the theory of labor value and the theory of 'technology value'. In addition, it is also important to refer to Marx's critical view of the 'capitalist' use of technology. Above all, Marx' concepts of relative surplus value and special surplus value, and his analysis of organic composition of capital are still valid in explaining that development of technology tightens control over workers and intensity of labor, and worsens instability of employment. Reflection of the limitations of capitalist development of technology is also important for realization of its usefulness. Industry 4.0 in Germany therefore deserves to be noticed as a good example because it shows a different way from extreme capitalist exploitation. The model suggests also some points that shouldn't be overlooked, when we try to actualize the tremendous slogan of the current fourth industrial revolution as real innovation and progress in human life. In this matter, the most important point is the possibility of technological development that doesn't oppose workers' interests.

• Journal of agricultural medicine and community health
• /
• v.3 no.1
• /
• pp.27-34
• /
• 1978

For the purpose of prevention and improvement of Korean rural women's anemia, the author has performed a study on the factors related to host and environment in order to acquire the basic data for public health activities from July, 1978 to September, 1978. The summarized results were as follows. 1. The prevalence of anemia was found in 38.6%, and the mean hemoglobin, hematocrit and specific gravity level were $12.25{\pm}1$. 79g/dl, $36.1{\pm}5.35%$, $1.053{\pm}0.004$ each other. 2. It was recognized and had statistically significance that the occurance of anemia was markedly influenced by 3 items; family size, yearly income per household and intensity of labor.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2001.05a
• /
• pp.577-582
• /
• 2001

Identification of damage of structures has recently received considerable attention in the light of maintenance and safety assessment under service loads. In buildings, the current techniques of safety assessment largely depend on partial experiments such as visual inspection, destructive and nondestructive tests which lead to overconsumption of time and cost as well as higher labor intensity. Therefore, a new trial for safety assessment is urgently needed today. In this respect, the vibration characteristics of buildings have been applied steadily to obtain a damage index of the whole building, but it cannot be established as a practical method until now. This study is aimed at investigating the application of damage identification methods using vibration characteristics of building. Numerical tests are performed on a apartment building. From the test results, it is observed that severity and location of damage can be estimated with a relatively small error by using natural frequency and mode shape data.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.15 no.3
• /
• pp.192-197
• /
• 1995

This experiment was conducted to evaluate the grazing performance of dairy cattle for winter rye, sorghum-sudangrass hybrid and oat including of rape in Hwa seong-gun, Kyeonggido, from 1993 to 1994. Each crops were utilized from the stage of 8-leaves to late blooming for sorghum-sudangrass, and from final leaves to soft dough for winter rye and oat plant. Under three different cropping system of winter rye-sorghum x sudangrass, spring oat-sorghum X sudangrass-autumn oat, and silage corn-autumn oat, a succeshl hehage production was available for grazing performance from April 26 to December 15, continuously. Annual dry matter yields for grazing allowance were 26.1 tontha in average of all cropping system. Autumn oat rnixtured with rape showed the highest herbage utilization with 91.6% grazing intensity and the lowest in sorghum-sudangrass with a value of 60.6- 69.1 %. Labor investment for herbage production were 805 hour in the cutting management and 339 hour per hectar in the grazing utilization.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.24 no.69
• /
• pp.51-64
• /
• 2001

A laboratory experiment was conducted to investigate the effects of working posture. work/rest ration, and task type on the physical workload in automobile assembly jobs. Ten healthy male university students participated as subjects in the experiment. East subject performed 18 experimental session with combination of 3 working posture 3 work/rest ratio and 2 task types. To examine the effect of various working conditions on workload, DMG analysis was performed on 4 different muscles in the neck an arm area, Also RPE scale and heart rate were taken as response variables. The result showed that all working conditions considered in the experiment had significant effects on the workload concluding that labor intensity in auto assembly jobs should be adjusted with respect to different levels of working posture, work/rest ratio, and task type. Detailed analysis are presented in the paper.

• East Asian Economic Review
• /
• v.16 no.4
• /
• pp.315-331
• /
• 2012

Previous studies of location choice have focused on country-level data more than firm-level data and been more concerned with host countries' distinctive features than with firm heterogeneity. Therefore, they do not answer the question of who will go where in terms of location choice. To analyze the role of firm heterogeneity in determining location choice, we develop a theoretical model and analyze data on 3,644 Korean manufacturing multinationals operating in 87 countries between 1982 and 2006. The results of our conditional logit analysis indicate that not only host country characteristics but also firm heterogeneous factors such as productivity, labor intensity, and size have considerable influence on the decision of where to locate FDI.

• East Asian Economic Review
• /
• v.23 no.2
• /
• pp.111-147
• /
• 2019

Singapore's inward and outward investments with industrialized countries in both manufacturing and service sectors were skill seeking while outward investments to developing countries were labor seeking. Applying the Knowledge-Capital model, it was found that services Foreign Direct Investment is sensitive to skill differences. A ten-percent decline in skill differences with industrialized countries resulted in a 4.25 percent rise in inbound manufacturing and 1.48 percent rise in inbound services investments. Meanwhile, a ten-percent increase in skill differences with developing countries resulted in a 30 percent rise in outbound manufacturing and 0.38 percent rise in services investments. Furthermore, when services are distinguished by skill-intensity, the impact of relative skill endowments on inbound Foreign Direct Investment in skill-intensive services is significantly different from the impact on other services. However, when services are disaggregated by "proximity" needs, we do not find any significant difference in the impact of relative skill endowments on Foreign Direct Investment.

• International Journal of Naval Architecture and Ocean Engineering
• /
• v.12 no.1
• /
• pp.605-616
• /
• 2020

The construction quality control of hull blocks is of great significance for shipbuilding. The total station device is predominantly employed in traditional applications, but suffers from long measurement time, high labor intensity and scarcity of data points. In this paper, the Terrestrial Laser Scanning (TLS) device is utilized to obtain an efficient and accurate comprehensive construction information of hull blocks. To address the registration problem which is the most important issue in comparing the measurement point cloud and the design model, an automatic registration approach is presented. Furthermore, to compare the data acquired by TLS device and sparse point sets obtained by total station device, a method for key point extraction is introduced. Experimental results indicate that the proposed approach is fast and accurate, and that applying TLS to control the construction quality of hull blocks is reliable and feasible.

• Journal of the Korea Safety Management & Science
• /
• v.24 no.3
• /
• pp.55-60
• /
• 2022

The effect of motion taping on the grasping power of the wrist is investigated and here Based on the data obtained from the This study was conducted to provide a theoretical background for the study. Motion taping was performed on the wrist for middle-aged people between 50s and 60s, and the change in wrist gripping power through an electronic dynamometer was tested. According to the wrist grip test results, it was investigated that the application of motion taping has a great effect on the gripping power of the wrist. It is hoped that motion taping will be a tool to reduce musculoskeletal industrial accidents, and it will be helpful to improve the quality of life of workers by reducing the labor intensity or softening the wrist through motion taping.