• Journal of Advanced Marine Engineering and Technology
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• v.32 no.6
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• pp.908-914
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• 2008

The world is facing a serious energy problem which destroying the environment. In addition, fossil fuel such as oil and coal that caused global warming and the environmental problems due to acid rain had been gradually exhausted. To solve this problem that has crisis of energy, it is necessary time and effort for research and development of renewable energy in the future. As alternative energy, small hydropower generation which has output of less or equal to 100kW is attracting considerable attention. This is because of its small, simple, renewable, and large amount of energy resources. By using a small hydropower generator of which main concept is based on using the different water pressure levels in pipe lines, energy which was initially wasted by use reducing of a valve at the end of the pipeline, is collected by turbine in the small hydropower generator. In this study, we investigated the influence of the number of runner vanes on the characteristics of tubular-type hydroturbine.

• Korean Journal of Occupational Health Nursing
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• v.24 no.3
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• pp.183-193
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• 2015

Purpose: The purpose of this study was to describe cleaning workers' working experiences in Korea. Methods: The data were collected in two focus-group interviews with 9 cleaning workers. The phenomenological analytic method suggested by Colaizzi was used to analyze the data. Results: Five theme clusters and thirteen themes emerged from the analysis. The first theme clusters, 'Dead-end choice' included Limits of elderly women workers, Financial difficulties, Lowered self-esteem. The second theme clusters, 'Facing with discriminatory working environments' included Fear and unfair working conditions. The third theme clusters, 'Potential health problems' included Physical overload, Repeated exposure to hazardous substances and Emotional labor. The fourth theme clusters, 'Excluded from protection of the law' included Gloomy reality and Sexual harassment. The fifth theme clusters, 'Desire to get out of social isolation' included Efforts to maintain the status, Desire to live confidently and Desire to change social recognition. Conclusion: The findings of the study provide understanding on cleaning workers' working experiences to explain by their vision and language and should ensure proper working conditions and environment to live a better life.

• Journal of the Korean Institute of Rural Architecture
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• v.19 no.4
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• pp.33-40
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• 2017

Following the development of economy and progress of the society, the problem of aging population appears. In 1999, China had been classified as "aging society" and aging of population has become a serious social issue that affects the economic growth and social stability. And one of the crux issue is the dwelling of aged people. As a cosmopolitan city, Beijing keeps leading position on residential development. But facing grim problem of ageing population, and the problem of the elderly living has not been solved yet. At the beginning of 21 Century, the first aged community(Oriental Sun City) was built in Beijing, and attracted a large number of old people to move in. But there are many problems in the process of design and construction since there is not much correlative researches for planning and design of aged communities. With a view to aged communities in Beijing, this thesis intends to research on the planning and design of aged communities. This thesis will give reference to help the programming and design of aged communities.

• Journal of Agricultural Extension & Community Development
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• v.18 no.4
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• pp.1011-1049
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• 2011

This study is mainly to investigate the influences of both Western's utopian socialism and cooperatives ideas on the process of China's rural cooperation from 1919(the occurrence of 5.4 movement) to 1958(the completion of People's commune). To accomplish this, first, we will discuss that how these two ideas emerged as an alternative to Western capitalism in the before/early 20th century were introduced into China and how these ideas effected on the process of the China's Communist Revolution. Then, we will review the process of China's rural cooperation during the 1950s' new socialist nation-building period since the foundation of New China(1949), the sharp debates about rural cooperation in the process of its realization, and the reasons of radically promoting rural cooperation in the late 1950s. Finally, through these debates and experiences regarding rural cooperation in rural China during 1919-1958, any implications in solving rural cooperation problems of contemporary China facing difficulties will be provided.

• The Korean Journal of Food & Health Convergence
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• v.6 no.5
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• pp.1-10
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• 2020

Cellulitis in broiler chickens is one of the economically important problems that facing the broiler industry due to the presence of the lesion leads to condemnation of part of /or the entire carcasses. Broiler with cellulitis lesions showed lower body weight. Cellulitis was recorded on different body regions including the head, dorsum, thighs, breast, legs, and abdomen. Cellulitis results from the invasion of subcutaneous (s.c.) tissues by bacteria through disruption of skin integrity. Lesions revealed the existence of the characteristic s.c colored exudate varies from yellowish to green, which were either serosanguineous, fibrinous s.c exudate yellowish, greenish or suppurative. Many bacterial isolates including E. coli, Staphylococci, Clostridia, Aeromonas spp., Enterobacter spp., Proteus mirabilis, P. aeruginosa, and Streptococci were isolated from the lesion. Chickens exposed to immunosuppression proved to have a greater probability of developing cellulitis. The condition was experimentally induced by s.c inoculation of 25-day-old broiler chickens with E. coli, S. aureus and clostridia. Usually, bacterial isolates were multidrug-resistant. The usage of Bifidobacterium bifidum or antibiotic with avoiding immunosuppression can reduce lesion and condemnation rate resulted from cellulitis. The objective of this review is to collect different literature written about cellulitis to be available to students, researchers, and veterinarians in poultry practical.

• Journal of Information Technology Applications and Management
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• v.31 no.4
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• pp.163-178
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• 2024

The development of industry since the Industrial Revolution has caused environmental destruction and is threatening to destroy the order of the Earth's ecosystem. Due to the severity of environmental problems, companies are facing a crisis where they may lose competitiveness if their management strategies do not prioritize environmental issues. This study studied the impact of a company's environmental orientation on employee satisfaction, organizational commitment, and loyalty. This study studied the impact of a company's environmental orientation on employee satisfaction, organizational commitment, and loyalty. As a result of the study, the internal and external environmental orientation of the company on satisfaction had a significant positive influence and were all adopted, while the internal and external environmental orientation on organizational commitment were all rejected as they had no significant impact. Satisfaction was found to have a significant positive (+) effect on organizational commitment and a significant positive (+) effect on loyalty, so both were adopted. Organizational commitment was adopted because it had a significant positive effect on loyalty, and internal and external environmental orientation had no significant effect on loyalty, so it was all rejected. A company's green environmental orientation plays an important role in a company's sustainable growth and can be formed based on the company's will. Therefore, this study shows that a company's environmental orientation improves the company's environmentally friendly image and provides positive value to organizational members, leading to improved corporate performance.

• Journal of Family Resource Management and Policy Review
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• v.16 no.1
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• pp.123-148
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• 2012

The main objective of this study was to investigate how people prepare for old age by looking at financial statements from single-person households in Gyeonggi province; the policy implications regarding low fertility and population aging are considered. The subjects were members of 600 households who were aged 26 to 44 years old and not married. The data were analyzed by t-test, ANOVA, and dichotomous logistic regression using SPSS WIN 12.0. Respondents pointed out that financial problems are the greatest challenges for those facing old age in single-person households; they said that a stable job is the most important factor for secure living. About 57% of household residents responded that they have prepared for retirement, and a majority of them said they hoped to spend their elderly years with a marriage partner. The financial statements from single-person households were inferior to those from other types of households. The assets of single-person household members were less than those of other households. Only 10.5% of respondents have owned homes. The study discusses policy implications for those who want marriage and for those who don't want it. For those who want marriage, job-seeking support was proposed, and for the others, tax deductions and family programs for single-person households were proposed.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.9
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• pp.3598-3614
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• 2020

With the increase of motor vehicles and tourism demand, some traffic problems gradually appear, such as traffic congestion, safety accidents and insufficient allocation of traffic resources. Facing these challenges, a model of Spatio-Temporal Dilated Convolutional Network (STDGCN) is proposed for assistance of extracting highly nonlinear and complex characteristics to accurately predict the future traffic flow. In particular, we model the traffic as undirected graphs, on which graph convolutions are built to extract spatial feature informations. Furthermore, a dilated convolution is deployed into graph convolution for capturing multi-scale contextual messages. The proposed STDGCN integrates the dilated convolution into the graph convolution, which realizes the extraction of the spatial and temporal characteristics of traffic flow data, as well as features of road occupancy. To observe the performance of the proposed model, we compare with it with four rivals. We also employ four indicators for evaluation. The experimental results show STDGCN's effectiveness. The prediction accuracy is improved by 17% in comparison with the traditional prediction methods on various real-world traffic datasets.

• The Journal of Asian Finance, Economics and Business
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• v.6 no.4
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• pp.45-52
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• 2019

The current study aims to investigate the relationship between tax avoidance and firm risk in an emerging market called Iran. The study population consists of 400 observations and 80 companies listed on the Tehran Stock Exchange (TSE) over a five-year period during 2012 and 2016. The statistical model used in this study is a multivariate regression model; besides, the statistical technique used to test the hypotheses proposed in this research is panel data. The results showed that low effective tax rate (tax avoidance) is more consistent than the higher effective tax rate. Moreover, there is no significant relationship between tax avoidance and future tax rate volatility. The findings also proved that lower effective tax rates are positively associated with future stock price volatility. This implies that since Iranian firms have many financial problems because of economic sanctions, they have a tendency to delay the disclosure of bad news about their firms. Needless to say, when a huge number of negative news reaches its peak, they immediately will enter the market and lead to a remarkable fluctuation in stock prices.

• Journal of the Korea Society of Computer and Information
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• v.4 no.4
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• pp.251-259
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• 1999

In this paper, university hospitals, general hospitals/hospitals, private clinics, Chinese medicine hospitals and clinics in Seoul. Metropolitan Inchon, Kyunggi-do were probed to find out how the variables of service task factor are related to customer satisfaction, and to find out the determinants of medical service task(tangible quality, flexibility, cost, time and managerial skills), and anticipation factors, and respective items of customer satisfaction through statistical analysis. The meaning of the above mentioned findings should be carefully understood and construed due to the following problems. Because the factors why patients select hospitals were measured limitedly. it cannot show everything I intended to suggest. Especially due to the insufficient number if items. customer satisfaction variables are too limited. Reflecting the developing changes in various medical environments, hospitals could meet the objective of maintenance and prosperity only by facing the competition effectively and satisfying patients. Also hospitals should pursue patient-oriented service management. In other words, a strategic management of service task factors is needed. Based on this paper's research. a further study should be conducted continuously in order to give customers more satisfaction.