• Journal of the Korea Concrete Institute
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• v.29 no.1
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• pp.23-32
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• 2017

The joints between precast PSC slabs of the intermediate road slab in double deck tunnel are inevitably generated in the road traffic vehicle traveling direction. Therefore, it is important to make the behavior of parts on the joint in one piece. The imtermediate road slab system of double deck tunnel in great depth proposed in this study will be constructed with precast PSC slab in order to minimize the construction period. And the joint connection between the precast slab has been developed in two methods: the 'Transverse tendon reinforcement method' and 'High strength bolts connection method'. Also, the experiments were performed for the full scale model in order to evaluate the performance of the intermediate road deck slab with two type joints systems, the structural stability was verified through the F.E.M analsysis. The results of static loading test and F.E.M analysis investigated a very stable behavior of intermediate road deck slab in double deck tunnel applying the joint methods developed in this study, in the cracks and deflections to satisfy the design standards of Highway Roads Bridges (2011), it was determined that there is no problem even servicebility.

• Korean Journal of Social Welfare
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• v.56 no.2
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• pp.167-194
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• 2004

This paper examine the gender-poverty gap and the feminization of poverty in Korea with using data from the National Survey Household Income & Expenditure(1996, 2000) and the Urban Survey Household Income & Expenditure(1996-2002) by Korea National Statistical Office. The poverty rate in 2000 was 16.9 percent for female-head families and 7.9 percent for male-head families, which means that female-head families were 2.6 times more likely to be poor than male-head families. With examining impact of economic crisis in 1998 on gender-poverty gap, it show that both the poverty rate of female-head and male-head increase radically in peak of economic crisis, while, in the stage of recovering economy, the poverty rate of male-head families recovered mostly the level before economic crisis, but that of female-head families recover only the 2/3 level before and the 1/3 remain still under poverty. Thus gender-poverty gap appeared bigger during passing through economic crisis. With analyzing on influence factors of poverty, it appear that poverty is influenced by gender itself as well as education level, working condition which is reflected substantially characteristics of gender. Such an analysis results mean that the considering gender dimension is necessary to resolve poverty fundamentally because gender is a point intersection among family, labour market, and social security. Therefore it appears certain that to develop and adopt of women-friendly social policy is effective approach, which could resolve poverty and social problems related to social rights.

• Korean Journal of Construction Engineering and Management
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• v.17 no.5
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• pp.78-88
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• 2016

Recently BIM technology has been expanded for using in construction project. However its spread has been delayed than the initial expectations, due to the high-cost of BIM infrastructure development, the lack of regulations, the lack of process and so forth. In design phase, especially, collaboration based on BIM system has being a key factor for successful next generation building project. Through the analysis of current research trend about IT technologies, virtualization and BIM service, data exchange such as drawing, 3D model, object data, properties using cloud computing and virtual server system is defined as a most successful solution. In various industrial fields, cloud computing technology is utilized as a promising solution which can reduce time and cost of hardware infrastructure. Among the cloud computing technology, VDI is receiving a great deal of attention from it market as an essential part cloud computing. VDI enables to host multiple individual virtual machines by using hypervisor. It has an advantage to easy main device management. Therefore, this study implements a step-by-step user's DaaS by analyzing the desktop resource data of the workers from Pre-design phase to Schematic design, Design develop and Construction design phase. It also develops BIM environment based on test of BIM modeler and designers in architectural design firm. The goal of the study is to enable the cloud computing BIM server. It provides cost saving, high-performance quality of working environment and cooperation's convenience and high security when doing BIM work in small and medium sized architectural design firm.

• Clean Technology
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• v.20 no.4
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• pp.449-456
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• 2014

There has been increasing concerns for the problems of water security in countries, caused by the frequent occurrence of localized drought due to the climate change and uncertainty of water balance. The importance of fresh water is emphasized as considerable amount of usable fresh water is utilized for power generation sector producing electricity. PV power system, the source of renewable energy, consumes water for the every steps of life cycle: manufacturing, installation, and operation. However, it uses relatively less water than the traditional energy sources such as thermal power and nuclear power sources. In this study, to find out the use of water for the entire process of PV power system from extracting raw materials to operating the system, the footprint of water in the whole process is measured to be analyzed. Measuring the result, the PV water footprint of value chain was $0.989m^3/MWh$ and the water footprint appeared higher specially in poly-Si and solar cell process. The following two reasons explain it: poly-Si process is energy-intensive process and it consumes lots of cooling water. In solar cell process, deionized water is used considerably for washing a high-efficiency crystalline silicon. It is identified that PV system is the source using less water than traditional ones, which has a critical value in saving water. In discussing the future energy policy, it is vital to introduce the concept of water footprint as a supplementary value of renewable energy.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.2
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• pp.801-810
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• 2013

The main purpose of this study is to reframe sustainability or sustainable development concept in the field of planning in consideration of climate change and natural hazards. The new concept is expected to provide a theoretical foundation for upcoming hazard mitigation measures addressing climate change. The first and main argument of the new concept is that environmental protection should be inclusive enough to address urban (or community) security from current natural hazards. The second is that the balance between structural and nonstructural mitigation measures is critical to cope more effectively with extreme natural hazards in the era of climate change and also with conflicts driven by three goals of sustainability--environmental protection, economic development, and social justice. The following studies, based on this new concept of sustainablity, are expected (1) to address new participation methods for the conflict resolution, (2) to explore detailed and substantive planning strategies and creative technical and institutional solutions for environmental protection, natural hazard mitigation, and conflict resolution. Two of APFM(the Associated Programme on Flood Management)'s three natural hazard risk criteria, Exposure and Vulnerability, may guide the exploration.

• Journal of Service Research and Studies
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• v.5 no.2
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• pp.15-24
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• 2015

The trade balance for the information and communications technology (ICT) industries in 2014 have reached 863 hundred million dollars as the main export products such as smart phone and semi-conductor increase, since the ICT industries have played an important role in economic growth in Korea. Until now, the consistent supporting of government and investment of company have been doing with the growth of ICT industries, as a result, Korea marked as the first in the UN electronic government preparing index, and rank 12 in the network preparing index through the policy of national information and basic plan of inter-industry convergence. However, as the unstable international economic circumstances, ICT industries is faced with the stagnation, and then preemptive development of products and services for ICT convergence industries is needed to continually get definite ICT Korea image. In this paper, the ICT convergence industry is analyzed and forecasted. In specific, the international and domestic market for cloud, 3D convergence, and internet of things is diagnosed. The market for ICT convergence industries is predicted to be 3.6 trillion dollar in the world, and 110 trillion won in domestic. From the analytical results for technology and services development, the preemptive supporting of the technology development and policy for the internet of things and 3D convergence industries is required. In addition to, through the future forecasting by socio-tech matrix method, the policy supporting for the ICT convergence area of healthcare, fintech, artificial intelligence, body platform, and human security is needed.

• Journal of Digital Convergence
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• v.18 no.7
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• pp.9-19
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• 2020

The purpose of this study is to analyze the difference in suicide rates between regions and to determine the effect of social workers on the regional suicide rate. The main analysis results are as follows. First, the suicide rates in metropolitan cities were lower than was lower than in other regions, and cities and districts were lower than those in the county area. Second, suicide rates were high in areas with many cultural and social welfare facilities per population. Suicide rates were high in low mental health facilities and low social welfare budgets. The suicide rate in rural areas was high. Third, suicide rates were high in areas with low economic requirements, areas with a high proportion of the elderly, divorce rates, and areas with a small number of social security recipients and living alone. In other words, the suicide rate in rural areas was high. Finally, social workers did not affect the difference in local suicide rates. Local social services and budgets have no real impact on suicide rates. In the future, it is necessary to improve the quality and quantity of community welfare practices that can lower community suicide rates.

• Journal of Forest and Environmental Science
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• v.23 no.2
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• pp.109-118
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• 2007

This study was conducted to provide the fundamental data of the policy plan for the security of forestry labour and the revitalization of forestry mechanization by analysing the status of forestry labor and the training plan. In forestry, the total number of employer and the labour cost have slightly increased annually, but the number of employer for timber harvesting has decreased. Therefore, the organization of expert forestry mechanization unit and the training of operator will be necessary. The number and person of forest management unit, the working days of the year and income have increased in Korea. However, the working days per month of forest management unit were only 15 days, which are only 180 days per year. In the results of the calculated number and person of forest management unit for the Korean forest tending volumes, about 349 forest management units are required. In case of adjusting 12 persons per 1 unit, 4,185 persons are required. In calculated results of the optimum forestry mechanization unit and member's number by the adjusting of tower yarder harvesting system for annual timber harvesting production volume, it was known to necessary the 250 forestry mechanization unit and the 1,250 members which are calculated at 5 persons per 1 group.

• Journal of agricultural medicine and community health
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• v.38 no.1
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• pp.39-48
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• 2013

Objectives: This research was done to identify relationships among job stress, fatigue, job satisfaction, and commitment to organization in customized home health care nurses. Methods: Research participants were 130 nurses who worked in the customized home health care of 20 county in Gyeongnam province. Data collection for this descriptive correlational study was done at August 2010 using self report questionnaires, and analyzed using descriptive statistics, t-test, ANOVA, and we analyzed a four step approach in which several regression analyses were conducted and significance of the coefficients is examined at each step. Results: The results from step 1 showed that, the effect of each job stress was significantly related to job satisfaction. In step 2, the direct effect of commitment to organization on job satisfactions were all significant too. Step 3 analysis showed that the total effect of each job stress on commitment to organization symptoms was significant. Step 4 showed the results of controlling for mediating factor (job satisfaction): job demand and insecurity were significantly associated with commitment to organization(p<0.001), the finding supports that others were fully mediated by each job satisfaction, and, the job demand and insecurity were partially mediated by job satisfaction. Conclusion: Results of this research indicated that job stress in customized home health care nurses was the principal variable affecting job satisfaction and commitment to organization. Appropriate stress management strategies based on assessment of job demand and job security for these nurses lead to development of improved commitment to organization.

• The Journal of Korean Association of Computer Education
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• v.20 no.2
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• pp.23-34
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• 2017

Information ethics, which is closely related to changes that occur in information technology, had been comprised of one unit ever since the curriculum was revised in 2007 from whence 'informatics' was established as the first course, and has remained so even after the curriculum was revised in 2015. The purpose of this study was to analyze the degree of content knowledge required of informatics teachers who will teach information ethics by distinguishing the subject from general ethics, and to grasp the status of information ethics education at graduate schools of education. In order to achieve this, the information ethics questions of the informatics teacher appointment exam from years 2002 to 2015 were analyzed as well as the curriculums of 32 graduate schools of education. The results of the study revealed that, first, questions related to information ethics were included in 10 exams, since the 2004 exam. Second, questions related to dysfunction were mainly addressed from the beginning of administering the exam but since 2010 many items related to copyrights, information security, and various addictions were added. Third, 11(33%) of the 32 graduate schools of education with informatics teacher training provide information ethics courses. This study is meaningful in that it will help to better understand the changes needed to update the information ethics related questions of the informatics teacher appointment exam, and to present a direction for information ethics education at graduate schools of education.