• International conference on construction engineering and project management
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• 2009.05a
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• pp.499-505
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• 2009

Along with the changing pattern that the construction project is getting complicated, large-scaled and up-to-dated, necessity of efficient management of manpower and resources of the construction site is being increased. In particular, considering that the construction site requires a lot of labor force and in terms of the construction cost, labor cost shares 30-40%, labor management has become a very important factor. In this study, in order to support a stable and successful construction project implementation and supplement the existing system being utilized at the current site, construction site access management automation system based on hand vascular pattern, a biometrics system, is intended to be developed. Relevant theory for the system development and the problem of existing RFID system were evaluated and based on this findings, a system design and DB composition chart were envisaged. In addition, by applying this developed system to a number of sites, its result was analyzed

• Journal of Labour Economics
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• v.34 no.3
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• pp.1-28
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• 2011

This paper empirically tests the theory that labor demand elasticity of unionized firms would be smaller than that of nonunionized firms, using the Korean firms' panel data for 1990-2009. The major findings are the following: First, the estimates of labor demand elasticity of unionized firms are in the range of 0.34-0.49, less than a half of those of nonunionized firms, hence supporting the theory. Second, the unionized firms are more rigid in dynamic adjustment of employment than nonunionized firms. Finally, there are no significant differences between unionized and nonunionized firms in the elasticity of substitution.

• Korean Journal of Agricultural Science
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• v.36 no.2
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• pp.233-244
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• 2009

This study analyzed the income of orange farming of Lichuan, Jiangxi Province in China. Using a questionnaire, 36 farmhouseholds of Lichuan were surveyed. The results are as follows. First, through the investigation of Lichuan orange farming farmhouseholds, we know that the direct expenses of Lichuan orange is around 2,250 RMB/10a and the direct expenses per household's are about 32,000 RMB. The average production of Lichuan orange is 1,548 kg/10a and the income is around 2,200 RMB/10a. The results showed that in Lichuan area orange farming benefit is more than rice so orange farming has been increasing. Second, the direct expense of Lichuan orange farming, 91% is material cost, 8% is labor cost, depreciation cost is only 1.4%. This result show that orange farming in Lichuan is very labor intensive. Third, there are a lots of young orange trees in Lichuan, so income would be increasing through the year.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2003.04a
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• pp.45-49
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• 2003

According to the rising of national economic level, domestic consumption of vegetables having high additive values is increased continuously due to increased consumption of meat in last decade. These vegetables are produced almost in this country and are limited to import from neighbor countries in due of high transportation expenses for storing in refrigerated container. It is very important to mechanize the harvest work, forming more than 30% for their production cost, in order to cultivate variable vegetables at the same time according to their harvesting seasons. In this state its former harvest methods, with using of human power or semi-automatic harvest, caused to increase their production cost due to high labor cost and low working efficiency.

• Journal of Agricultural Extension & Community Development
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• v.3 no.1
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• pp.55-66
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• 1996

Agricultural products are inferior in their competitiveness in the world market mainly due to die high production cost which could be attributed to the rising land and labor cost in Korea. The small scale farming system with the lower production infra structure requires relatively intensive input labor for the reduction of production cost of agricultural products and impediment in the mechanization of farming systems. There are limitations in the cultivation techniques that seek out other directions for the raising competitiveness in the world market of basic food crops. Future goals to raise competitiveness of basic food crops in Korea should include the following: 1. Fostering of the farmers organization by crop items. 2. Agribusiness should integrate management with priority given to farmers. 3. Raise competitiveness to find out the system of obtaining on from the consumers.

• Ocean policy research
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• v.34 no.2
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• pp.1-28
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• 2019

The purpose of this study is to analyze the substitution among production factors of Korean distant water longline fisheries in IATTC waters. In the analysis, the translog function which have one output variable of total cost and input variables of labor, fuel, fishing gear, and capital was established and it was transformed into simultaneous equations by each cost. Then, variables of equations were estimated by SUR (seemingly unrelated regression) model. Since distant water longline fisheries is a fishing type with high fuel usage, substitution of fuel with other factors was mainly analyzed. Results showed a substitute relation between fuel and labor as well as fuel and fishing gear, while a complementary relation between fuel and capital. In addition, it was analyzed that magnitude of fuel elasticity with other factors would be inelastic.

• Journal of the Korean Regional Science Association
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• v.14 no.2
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• pp.51-64
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• 1998

This paper investigates how the factor inputs of firms are affected by the expectation about land-price increase in the future. We develope a two-factor (land and labor) model, in which expectation about land-price increase plays a key role in determining the "optimal" input level of labor and land. Expecting capital gains from input of the land when land price increases, firms input land up to the point where the marginal productivity of land falls short of the marginal cost of purchasing the land, in order to maximize the "joint-profit". That is, firms have an incentive to use more land than they do when capital gains are not expected. We mean joint-profit by profit in the standard sense plus capital gains. Once the land is input "excessively", the productivity of labor increase and labor is also input more, since land and labor are assumed as complementary in production. This mechanism works in the opposite direction when land price decrease. This paper suggests that land price fluctuation is a major destabilizer of an economy.or destabilizer of an economy.

• Journal of the Korea Institute of Building Construction
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• v.16 no.2
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• pp.133-140
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• 2016

The amount of labor input in a construction project is used as source data to estimate construction cost and to understand the productivity of the construction industry. However, there is a significant difference between the standard of estimation and the actual amount of labor input, and a plan is needed to resolve this problem. For this reason, to establish a system with which the actual amount of labor input can be inputted in a more accurate and simpler manner, a new method is proposed in this study. In the new method, a digital pen is used to minimize the difference from traditional handwriting on paper using a pen, and eliminate the redundant input of information. This study is expected not only to reduce the actual amount of labor input but also to contribute to the productivity of construction cost estimate through the sharing or utilization of the information on the web.

• Journal of Korea Technology Innovation Society
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• v.9 no.1
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• pp.175-198
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• 2006

Analyzing the effects of information technology(IT) in the life insurance Industry is important in establishing the direction for future information technology investment. In this research, the cost-elasticity of IT capital stock was measured by the SUR technique, using the second-order translog cost function, which was drawn out by a Taylor expansion of the multi-product joint cost function. Analysis was made based on data from 1991 to 2003 collected from 33 life insurance firms. The results show that although the effects of information technology investment vary according to individual life insurance firms, half of the life insurance firms surveyed reduced their costs by investing in information technology. The research also revealed that although large life insurance firms reduced their costs by investing in information technology medium & small life insurance firms and foreign ,life insurance firms increase their costs. Additionally, although both information capital and information labor increase as the information budget increases, the increase in information capital is larger than one in information labor. Because the price of information capital is decreased rapidly more than one of information-related labor.

• Korea Journal of Hospital Management
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• v.9 no.3
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• pp.49-70
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• 2004

This study analyzes the effect of separation of dispensary from medical practice on hospital management performance. The results are as follow. The earning ratios of large size hospitals become deteriorated significantly after the separation of dispensary. The growth ratios of revenues from inpatient were unchanged, but the growth ratios of revenues from outpatient of large and middle size hospitals were decreased significantly. Hospitals can't sell the medicines to the outpatient after the separation of dispensary, but they can do to the outpatient. The labor cost ratios of small and large size hospitals are increased significantly after the separation of dispensary. There are two reasons for increase of labor cost ratios. One is the decrease of material cost ratio. The other is the increase of doctor's salary. The material cost ratios of every size hospital are decreased significantly after the separation of dispensary. Because medicines costs of outpatients are decreased. The labor cost and doctors' salary per patient of middle and large size hospitals are increased significantly after the separation of dispensary. And average treatment fees per day of inpatients of middle and large size hospitals are increased significantly after the separation of dispensary. But those of outpatients are decreased significantly. Average numbers of outpatients per bed of small and large hospitals are decreased significantly after the separation of dispensary. And average numbers of inpatients per bed of large hospitals are decreased significantly. In summary, as a consequence of separation of dispensary from medical practice, management performances of large size hospitals become deteriorated significantly.