• Journal of Digital Convergence
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• v.18 no.3
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• pp.377-382
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• 2020

The purpose of this study is to analyze the study related to volleyball class in elementary school in Korea and to present the plan to grasp the reality and to activate the volleyball class. To this end, 31 domestic presentations related to elementary school volleyball lessons were selected to confirm the reality, and based on this, the methods for activating volleyball classes were as follows. Firstly, as a practical problem of volleyball lessons in elementary school, first, volleyball lessons avoided in the field; It was considered a problem. An activation plan for such a problem is proposed as follows. First, reform the curriculum and extend the period, second, conduct realistic teacher education, and third, explore ways to recognize teachers' volleyball's value and improve their expertise. Fourth, support volleyball experts using various human resources. It is the dissemination of volleyball-type classes.

• Journal of Digital Convergence
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• v.18 no.3
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• pp.123-131
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• 2020

The purpose of this study was to investigate the effect of task conflict on relationship conflict and the effect of relationship conflict on team satisfaction and to examine the moderating role of trust in peers in the relationship between task conflict and relationship conflict and the moderating role of team orientation in the relationship between relationship conflict and team satisfaction. The major findings were as follows: First, it was found that task conflict had a positive effect on relationship conflict and relationship conflict had a negative effect on team satisfaction. Second, it was found that trust in peers moderated the relationship between task conflict and relationship conflict. Third, it was also found that team orientation moderated the relationship between relationship conflict and team satisfaction. Based on the findings, practical implications and suggestions for future studies were provided.

• Journal of Digital Convergence
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• v.18 no.8
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• pp.401-406
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• 2020

This study is an analysis of the user experience of online hobby class platform, focusing on the art field, which reduces space-time constraints and lowers accessibility. To this end, I investigated cases of online hobby class platforms and conducted surveys to measure user experience for university students and office workers in their 20s and 30s in Korea. As a result, we found the gap between the elements satisfying the user experience and the current domestic service, and suggested a way to narrow it down. This study is meaningful in that it proposed ways to further promote online hobby class platforms in the future leisure culture market. It is hoped that this study will be used as data on the user experience of future online hobby platforms and further help discuss practical activation measures.

• Journal of Digital Convergence
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• v.18 no.9
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• pp.1-8
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• 2020

This study analyzes the effects of individual Competence on job-seeking activities and employment. For the sake of empirical study, we have used microdata public data provided by the National Statistics Office of Korea, which is composed of 731,852 people. Empirical results were obtained by applying structured equation model with using job-seeking activities as a mediating variable. Results showed that those three variables such as age, level of education, and specialty had a significant effect on job-seeking activities and employment. Especially, we found practical implication that regardless of gender, it becomes likelier that individuals can find jobs when their job-seeking periods are shorter. Also, level of education has positive effects to employment. The limitation is that these results are not associated to data which has the quality of employment and that they do not reflect the uniqueness of 2018. In this sense, job-seeking support education programs by local governments need to be designed out of this implication.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.40 no.5
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• pp.369-378
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• 2003

This paper presents design and VLSI implementations of a reassembly processor for ATM/AAL. The assembly processor is responsible for processing ATM cells from the receive physical interface. It controls the transfer of the AAL payload to host memory and performs all necessary SAR and CPCS checks. We propose the improved structure of cell identification algorithm and smart scatter method for host memory management. The proposed cell identification algorithm quickly locates the appropriate reassembly VC table based on the received VPI./VCI channel value in the ATM header. The cell identification algorithm also allow complete freedom in assignment of VCI/VPI values. The reassembly processor uses a smart scatter method to write cell payload data to host memory. It maintains the scatter operation and controls the incoming DMA block during scatter DMA to host memory. The proposed reassembly processor can perform reassembly checks on AAL. OAM cell. For an AAL5 connection, only CPCS checks, including the CRC32, are performed. In this paper, we proposed a practical reassembly architecture. The design of reassembly processor has become feasible using 0.6${\mu}{\textrm}{m}$ CMOS gate array technology.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.49 no.6
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• pp.9-17
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• 2012

High-quality multimedia on the Internet has attracted attention because of its wide application area. IP multicast has been proposed as a solution to use efficient network resources in these services. However, IP multicast has not been commonly used due to a number of practical issues such as security and management. As an alternative, an overlay multicast routing which is performed in upper protocol layers on legacy networks without changing hardware has been presented. Yet, the maximum data transmission capacity of the overlay multicast is not sufficient for real time transmission of multimedia data. In this paper, we have implemented an overlay multicast engine on NetFPGA which allows us to perform packet replication and tunneling which need high-speed. In addition, we have implemented extra portions which need low-speed in software. From now on, we will progress research which increase the number of terminal spots which can be replicated by improvement and amplify throughputs by optimization.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.37 no.4
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• pp.739-746
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• 2017

The need for education that meets the strengths and weaknesses of cyber education is raised because there is difference in the characteristics of students and the needs for education between the cyber university, where the education without constraints of time and space is made, and the existing offline universities. Also, it is expected that the satisfaction of students will be greater if the education is provided based on the analysis of the characteristics of students and their demands for education. There are many students already engaged in construction industry. The students entering the construction engineering department in cyber university are Interested in acquiring the theoretical foundation and professional construction knowledge based on practical experience, professional licenses, and career management. Also, they are interested in further studies at graduate school level and add to academic depth. This study suggests the necessity of establishment of construction education system Including objectives and curriculum in cyber university based on the analysis on the characteristics of students and educational needs.

• Research in Community and Public Health Nursing
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• v.13 no.3
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• pp.503-512
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• 2002

Purpose: This study was conducted to develop educational materials for preventing type B viral hepatitis infection. Prior to this study, a survey had been conducted to define the educational needs of persons with hepatitis B antigen. Method: Based on the results of the former study and a review of the literature, the content of the educational materials was confined to the transmission cycle and its prevention in type B hepatitis. A professional team that consisted of writers and producers videotaped the lectures provided by professors and instructors in a nursing school. A professional graphic designer produced the leaflet to enhance the visual effects. Results: The contents of the educational materials for type B hepatitis were composed of six parts: (1) the prevalence rate (or morbidity) of type B hepatitis antigen positive and its recent trend, (2) transformation of hepatitis. (3) transmission cycle of hepatitis infection, (4) persons who are susceptible to hepatitis and need a vaccination, (5) preventive approach hepatitis vaccination and the guideline for patients' daily lives for preventing infection and (6) questions and answers. The materials were delivered in the form of lectures, visual charts, graphics, and multi-media. Conclusion: The educational materials developed in this study may provide practical information and knowledge on strategies to prevent type B hepatitis. The educational materials may be utilized in primary health care centers or school health services.

• Journal of the Korea Convergence Society
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• v.8 no.7
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• pp.23-28
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• 2017

For manufacturing industry to achieve efficient manufacturing process, improving a company's productivity and reducing cost is a required task of the current manufacturing companies. For design of efficient manufacturing process and improvement of productivity, efficient manufacturing process method is studied through removal of unnecessary elements analyzing motions and using test-bed linkage system based on virtual reality. When building process line after verifying optimization through virtual process arrangement simulation in advance, it is available to save additional cost for process modification or supplement to result in practical effects of improving a company's manufacturing competition. Reducing design period, improving equipment, making automation, realizing ergonomics, and improving process through this study, it will be available to achieve improvement of productivity, enhancement of quality, cost reduction as well as employees' satisfaction for safety and health.

• Journal of Environmental Science International
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• v.20 no.11
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• pp.1383-1394
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• 2011

Environmental impacts of suspended solids (SS) released in coastal area by dredging, reclamation and construction can cause serious damages to coastal habitats and benthic organisms. Acute toxicity tests (4-7 days) were conducted to identify the relationship between SS concentration and mortality of three marine benthic species; benthic copepod (Tigriopus japonicus) adult, Pacific abalone (Haliotis discus hannai) spat, and olive flounder (Paralichthys olivaceus) fry. Benthic copepod was the most sensitive to SS followed by olive flounder fry and Pacific abalone spat, with an $LC_{50}$ (lethal concentration of 50% mortality) value of 61.0 mg/L and LOEC (lowest observed effective concentration) value of 31.3 mg/L for benthic copepod. LOEC and 7 day-$LC_{50}$ for Pacific abalone spat were 500.0 mg/L and 1887.7 mg/L, and those for olive flounder fry were 125.0 mg/L and 156.9 mg/L, respectively. The tolerance limits of the test species to SS revealed the various concentration ranges of SS, which reflects the physiology and ecology of the test species. These results are very valuable for the determination of SS concentration of effluents released into the coastal area by dredging, reclamation and construction etc. Also, sharp increase of SS can cause long-term damages to the benthic and sessile fauna by blanketing of benthic substratum. These experimental procedures for marine bioassay and acute toxicity results can be a useful guideline for practical management planning of SS discharge into coastal area.