• Journal of the Korea Institute of Military Science and Technology
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• v.16 no.3
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• pp.322-331
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• 2013

Wireless Mesh Networks(WMNs) is generally composed of radio nodes in the mesh topology. WMNs consists of mesh client, mesh router and gateway connected to a wired network. Each client and router relay messages to the gateway for communication. WMNs is widely used recently in many areas can provide extended coverage based on multi-hop communication and ubiquitous communication at any time and any location. However the competition and collision between each node to transmit data is inevitable when the same channel is used for transmission. The transmission opportunities and the throughput of nodes located far from gateway decrease more if the communication channel is accessed based on competitive CSMA/CA scheme using DCF(Distributed Coordination Function) provided by IEEE 802.11 MAC. In this paper, we improve the performance of the TCP fairness and throughput of the nodes with more than 2 hops by applying various algorithms for controlling contention window values. Also, we evaluate the performance using ns-2 simulator, According to the results, proposed scheme can enhance the fairness characteristic of each node irrespective of data to the gateway.

• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.580-587
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• 2016

This paper examined the relationship among corporate cash flow, its accruals, and its factors with its continuity of profit and corporate value by regression analysis of KOSDAQ based midsize manufacturing enterprises for 11 years from 2004 to 2014 year. Through this empirical analyze, corporate operators can have a chance to find opportunities to improve the efficiency of business operations, and to the potential investors, it can give the perspective through providing the basic information for the rational investment decisions. Through this analysis, its cash flow, accruals and its factors showed continually a significant relationship with its corporate operating profits and its market values. Thought out the relation analysis, its cash flow, its accurals and the factors of the accruals, account receivables, inventories affected the positive(+) impact on its business profits. But, its account payables affected negative(-) impact on its business profit. The other hand, the cash flow from operating activities and accruals related to capitalization of assets and liabilities fluctuations affected a positive(+) effect on the company market value.

• The Journal of the Korea Contents Association
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• v.14 no.7
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• pp.18-28
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• 2014

With the reformation of organization and function of local office of education in 2010, consulting-supervision is introduced to schools as a system for education reform to improve the quality of school education. However, a dedicated on-line portal system that can provide integrated management on the functionalities of consulting-supervision has not been implemented yet. To successfully operate consulting-supervision in schools, it is also needed to provide an on-line consultant education system, that can support teachers to train themselves as a supervision-consultant. In this paper, we introduce an on-line consultant training system that provides various learning activity tools for consultant training based on Learning Activity Management System(LAMS) and Action Learning. The system consists of Management stage, Analysis stage, Solution stage, and Action stage for the empowerment of consultants' expertises, and is named as MASA. Brain-writing, SWOT(Strengths, Weaknesses, Opportunities, and Threads) analysis, 5Whys, decision grid, PMI(Plus, Minus, Interesting), and black chart techniques were developed in MASA as learning activity tools for consultant training.

• Korean Journal of Social Welfare
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• v.65 no.2
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• pp.5-28
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• 2013

This study was to examine the effects of individual and environmental character among adults with intellectual disabilities on self-determination and to address issue of self determination in practical terms. This study was analyzed by the Structural Equations Models with 219 individuals with intellectual disabilities in residential home in the Metropolitan area, the Yeongnam area, the Honam area. The results showed that individual factors such as adaptive behavior and provider-user relationship recognition, and environmental factors such as institution size and institution location were directly affected to the self-determination of them. The opportunity was a full mediating effect in this process. In conclusion, this study stated how importance of the consumerism. Also it was suggested that some practical strategies to improve their self-determination in changing residential environment and support methods of the service in way to emphasis their opportunities.

• Journal of Korea Port Economic Association
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• v.36 no.1
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• pp.105-128
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• 2020

This study suggests a strategic direction for developing the Port of Busan based on evaluating and prioritizing the relative importance of competitiveness factors for ports using SWOT analysis and the analytic hierarchy process (AHP) method. The Port of Busan is the world's sixth largest container port and the largest port in South Korea. The Port of Busan constitutes a key industrial infrastructure for an exporting country. Despite the economic and industrial importance of the Port of Busan, little research has examined its strategic development. This study derives a SWOT matrix for evaluating the competitiveness of factors from previous studies and expert reviews, and it constructs a hierarchical analysis structure model based on the SWOT matrix. To deduce a strategic direction for developing the Port of Busan, a questionnaire based on SWOT·AHP was distributed to industrial and academic associations to prioritize competitive factors. This study presents four strategic tactics based on strengths (S), weaknesses (W), opportunities (O), and threats (T) (S/O, S/T, W/O, and W/T) as strategic directions for developing the Port of Busan. This study will contribute objectively to the overall effort by the government to improve the operation of the Port of Busan and establish development strategies.

• Journal of Korea Multimedia Society
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• v.17 no.11
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• pp.1313-1324
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• 2014

Korea has high quality level of ICT Technologies, however it still have a long way to go before invigoration of ICT in agriculture industry. The government of Korea supply to agriculture ICT systems, however these are the enclosed type and insufficient the level of connectivity, compatibility, and integrity between ICT systems. Farmers can not share crop information and one system can not use with others in combination. Recently, IoT(Internet of Things) become popular to emphasize the vision of a global internet and ICT industry. The IoT is a critical technology that leads future internet generation. We believe that IoT will change status of agriculture industry and appearance of various agriculture business model. Using IoT technology is provided a platform of opportunities to optimize work processes and efficient use of energy, time and labour in farm. It can automatically control temperature, humidity, sunshine system and so on for optimal growth conditions at greenhouse and plant factory. Growth setting can even be controlled and monitored crop condition and disease by a smartphone app or PC. It is possible to improve quality of farming and farm product. We suggest that construction of IoT platform through open API in agriculture industry.

• The Korean Journal of Food And Nutrition
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• v.21 no.2
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• pp.218-226
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• 2008

This study examined the preference and consumption of chungkukjang among elementary school children in Seongnam, Korea. The subjects included 583 students(male 300, female 283) who were asked to fill out a questionnaire. The collected data were analyzed using the SAS package. The results showed that 91.9% of the female students, 91.6% of children from nuclear families, and 90.7% of children with stay-at-home mothers, consumed chungkukjang. Among the children who had eaten chungkukjang previously, most had consumed it at home, and 65.5% of the students responded that chungkukjang was tasty. The data also revealed that female students, children from nuclear families, and those with stay-at-home mothers had greater preference for chungkukjang than male students, children from extended families, and those with working mothers. When asked why they dislike chungkukjang, both male and female students who had eaten it responded because 'it smells bad' and that 'it is not tasty'. However, among the students who had never eaten it, the male students replied because 'it is not tasty'(33.3%) and that 'it is not eaten at home'(27.8%), and the primary responses of the female students were 'it is not eaten at home'(65.2%) and 'it is not tasty'(21.7%). However, the subjects who had tried chungkukjang previously answered that in the future they would like to have it more frequently, as compared to the subjects who had never eaten chungkukjang. Therefore, to increase knowledge and improve perceptions of chungkukjang foods, families should give children many opportunities to try them, and in return, children will consume chungkukjang foods with pride. Furthermore, it is important that society as well as mass media, which have great influence on children, show concern and offer support in promoting chungkukjang.

• Journal of the Korea Convergence Society
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• v.11 no.5
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• pp.219-227
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• 2020

Rapid changes in the environment, such as the 4th Industrial Revolution, provide crises and opportunities for SMEs. The government is trying to improve and expand the SME support project, but has not been able to achieve the desired results. This study studied the effective performance factors of overseas marketing support projects in response to changes in the role of SMEs. The research was conducted based on a survey of coporations applying for export support projects. As a result of the research, the corporate competence, the support quality from the support institution, and the consultant competency have a significant influence on the utilization of the support project. In addition, it was analyzed that the utilization of support projects has a significant effect on corporate performance. In order to achieve the performance of support projects under a changing export environment, support organizations, consultants, and coporation should strengthen their competences. This study suggests the criteria for judging the actual factors necessary for the improvement of the export support project, and studies on how to strengthen the competences of each factor should be conducted in the future.

• Journal of the Korean Institute of Landscape Architecture
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• v.29 no.1
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• pp.32-40
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• 2001

The purpose of designing Haebaragi park, legally designated as children park, is to make a place for children including residents performing outdoor recreation, various social interactions, and cultural activities. Design concept for space plan have twofold; the one is a positive and creative playing space and facilities for children, escaped from a monotonous playground, and the other is a cultural and social space for neighboring communities. The site having the area of 1,316.7 square meters, located in Nowon-Dong, Buk-Gu, Daegu metropolitan City, is just like a vest pocket park. The adjacent area had been developed a slum area with mixed ad visually conflicting land use patterns and low income groups. The children and residents living in the area do not have any public space suitable for playing and/or rest. After analyzing such locational characteristic as accessibility, land use of the communities, and potentials for park development, and such design concept as arrangement of facilities, efficient use of site, and functional allocation of park space, We have mad a plan for composition of spaces for various activities, provision of facilities based on estimation of user-demand and activities, and planting. In the design process, we have tried to harmonize functional spaces with facilities, and to organize all the functions as a whole. To improve urbanity and aesthetic shape of park design, we have introduced a central plaza, design of a pave floor, a torrent, large trees for shade, colonnades and so on. From this design project, we can develop the site as a children park for increasing creativities and various playing opportunities, and as a resident space for rest, cultural activities. In the future, it is required that many attempt to design and develop urban small space as a park for children and residents.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.20 no.2
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• pp.157-167
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• 2013

Purpose: The purpose of this study was to investigate the effects of emotional labor, emotional intelligence and social support on job stress in clinical nurses. Methods: Participants were 123 clinical nurses and data were collected from October to December, 2011 and analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficients and multiple regression with SPSS 18.0. Results: A positive correlation was found between job stress and emotional labor. Emotional labor showed a significant negative correlation with emotional intelligence and social support, whereas a positive correlation was found between emotional intelligence and social support. The strongest predictor of job stress was emotional labor. In addition, institution satisfaction (dissatisfaction) and the reason for selecting the job (opportunities for service) accounted for 21% of variance in job stress. Conclusion: The results of this study suggest that it is important to manage emotional labor as well as to improve job satisfaction in order to reduce job stress in clinical nurses.