• Physical Therapy Korea
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• v.16 no.4
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• pp.37-43
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• 2009

This study compared the electromyographic activities and input performance of computer operators using a computer mouse and a trackball. Muscle activities were assessed at the upper trapezius (UT), middle deltoid (MD), extensor digitorum (ED), and first dorsal interosseous muscle (FDI). Twenty-six healthy subjects were recruited, and the test order was selected randomly for each subject. The task set was to click moving targets on a Windows program. The EMG amplitude was normalized using the percentage of reference voluntary contraction for UT and MD and the percentage of maximal voluntary contraction for ED and FDI. To analyze the differences in EMG activity, a paired t-test was used. UT muscle activities were significantly greater when the computer mouse was used (p<.05). FDI muscle activities were significantly greater when the trackball was used (p<.05). Using a trackball can reduce the load on the UT during computer work and help to prevent and manage work-related musculoskeletal disorders.

• Journal of Family Resource Management and Policy Review
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• v.7 no.2
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• pp.59-79
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• 2003

The purposes of this study are to examine the participation of leisure activities for elementary school children and to analyze the children's and their mother's perception about their leisure activities. The data for the analysis are collected by the structured questionnaire and in-depth interview, The data for 106 children and their mothers living in Incheon city are analyzed using descriptive statistics and content analysis. The result of this study is summarized as follows: First, the most frequent leisure activities participated by children were hobby and culture activities such as attending institutes or receiving private tutoring. The most prefer leisure activities of children were computer related activities, watching TV and playing with friends According to the in-depth interview, these activities contributed to getting rid of stress and relaxing tension. Second, among the various activities, children tented to perceive computer related activities, roller-binding, paper folding, reading and watching TV as the leisure activities. There was no significant difference in the perception of leisure activities between mother and children except paper folding and reading. Third, the 55.7% of mother responded that the leisure activities that they were participated in childhood were more desirable compared with their children's ones.

• Journal of the Korea Society of Computer and Information
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• v.17 no.10
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• pp.167-173
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• 2012

The purpose of this paper is to investigate non-work relating activities at work. To do this, this paper proposes and analyzes a simple theoretical model consisting of factors such as non-work relating smartphone usage during working hours, non-work relating coffee break during working hours, work after working hours, and job performance. Our findings are revealed as following: First, non-work-related coffee break has positive effect on performance. Second, non-work-related smartphone usage generally has negative effect on performance, but it has positive effect on performance in personal communication with co-workers. Third, work after working hours has negative effect on performance.

• ETRI Journal
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• v.44 no.6
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• pp.977-990
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• 2022

This study proposes a novel method for identifying the primary conspirators involved in terrorist activities. To map the information related to terrorist activities, we gathered information from different sources of real cases involving terrorist attacks. We extracted useful information from available sources and then mapped them in the form of terrorist networks, and this mapping provided us with insights in these networks. Furthermore, we came up with a novel centrality measure for identifying the primary conspirators of a terrorist attack. Because the leaders of terrorist attacks usually direct conspirators to conduct terrorist activities, we designed a novel algorithm that can identify such leaders. This algorithm can identify terrorist attack leaders even if they have less connectivity in networks. We tested the effectiveness of the proposed algorithms on four real-world datasets and conducted an experimental evaluation, and the proposed algorithms could correctly identify the primary conspirators and leaders of the attacks in the four cases. To summarize, this work may provide information support for security agencies and can be helpful during the trials of the cases related to terrorist attacks.

• Journal of The Korean Association of Information Education
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• v.20 no.1
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• pp.1-12
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• 2016

The purpose of this study is to investigate and analyze the elementary teachers' use of smart-phone applications (apps) in teaching-learning activities. The range of study includes the current usage patterns of apps in teaching-learning activities, elementary school teachers' understanding about apps usage in their classroom and providing the guideline about how to use apps for each subject in the classroom. We surveyed 100 elementary school teachers who are interested in smart education in Seoul. These teachers have an experience of working in a smart research school or have a computer-related master's degree. We expect that the result of the study will helpful for the elementary school teachers to design teaching materials using apps.

• Journal of Korean Home Economics Education Association
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• v.15 no.1
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• pp.1-14
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• 2003

This study was designed to contribute for improvements of middle school students' quality of life and to Present materials necessary for applying leisure activity Programs for them through an analysis of the patterns of the leisure activities and life satisfaction .For the statistical analysis. Cronbach α. t-test. ANOVA. Duncan's multiple range test were calculated. The Participants were 515 second glade students of middle school in Kangwon Province . The findings can be summarized as follows. 1) The average point of patterns of the subjects participating in leisure activities was 2.38. and activities. which are associated with computers. accounted for 3.35. the highest mark among the various patterns. 2) The patterns of the subjects' leisure activities varies significantly with sociodemographical variables such as sex. location. level of living. pocket money. and leisure expenditure Such factors as leisure time in weekends and the degree of interest in leisure made a significant difference in the patterns of leisure activities .3) The average Point of subjects life satisfaction was 3.49. and their family life satisfaction reached to 3.81 the highest mark. And the Patterns of leasure activity had a Positive relationship with the subjects' life satisfaction. consisting relatively low correlation. However, the more the subjects take Part in leasure. the more they were satisfied with life.

• Journal of Korean Academy of Nursing
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• v.27 no.1
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• pp.7-12
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• 1997

A computerized Community Health Posts information system was developed in 1991 by Yonsei University, College of Nursing and disseminated to more than four hundred Community Health Posts. The content of was published in the journal, The Korean Nurses in 1995, volumne M, number 4. Successful adoption to the computer program is related to many factors, such as personal factors and environmental factors. For the computer program to succeed it must be significantly related to the users and therefore it is necessary to analyze these related factors. This study describes the status of the utilization of computer programs in Community Health Posts and analyzed the factors related to utilization of the computer program. Of the 801 community health practitioners, 656 responded and data were analyzed using SPSS computer programs. Responents were from six provinces and about 85% had been working as CHPs for more than five years and 84.1% had graduated from a community college. Of these 656, 42.1% had a computer and about 60% had funding aid from the community or government. The percentage using the community health post's computer program was 22.3%. Community health practitioners were most often using the following content of the computer program : treatment activities (65.5%). medication management(53.5%). counselling and education(46.4%). bookkeeping(39.5%). chronic disease management (28%), and insurance billing(15.9%), The factors which were significantly related to the computer utility were degree of support from province, years of working. and age. The Community health practitioners who had more support from the province. who had fewer working years. and were younger used the computer program more frequently.

• Journal of the Korea Society of Computer and Information
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• v.23 no.5
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• pp.73-78
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• 2018

Recently, Flipped Learning is attracting attention as a method for qualitative growth of university education. Flipped Learning is a kind of computer based education and consisted of online video lectures and offline student activities. This paper introduces the results of applying Flipped Learning for one semester to Korean linguistic norms course. As for this course, the contents related to the knowledge and information were provided individually before the class through online video, and the offline classes focused on student-led activities. When qualitatively evaluating the results of the course, students developed a more comprehensive and flexible mind set beyond the preexisting normative attitudes and showed increase in analytical and critical thinking in understanding the principles of linguistic norms and spelling system. According to these results we argue that it is necessary to actively adopt Flipped Learning in the humanities education, including the grammar classes.

• Journal of the Korea Society of Computer and Information
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• v.21 no.12
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• pp.97-105
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• 2016

Network-Centric Operational Environment(NCOE) service becomes critical in today's military environment network because reusability of service and interaction are being increasingly important as well in business process. However, the refinement of service by semantic similarity and functional similarity at the business process was not detailed yet. In order to enhance accuracy of refining of business service, in this study, the authors introduce a method for refining service by semantic similarity and functional similarity in BPMN model. The business process are designed in a BPMN model. In this model, candidated services are refined through binding related activities by the analysis result of semantic similarity based on word-net and functional similarity based on properties specification between activities. Then, the services are identified through refining the candidated service. The proposed method is expected to enhance the service identification with accuracy and modularity. It also can accelerate more standardized service refinement developments by the proposed method.

• Journal of the Korea Society of Computer and Information
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• v.23 no.11
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• pp.239-246
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• 2018

In this paper, we propose to investigate the existing SW education related studies and to collect the total effect size for the improvement of computational thinking(CT) through meta-analysis and to confirm the effect size according to various variables. So, we have objectively identified and generalized the practical effects of SW education on the various variable. The results of the meta-analysis showed that 1) the overall effect of SW educational activities on CT improvement was 'Hedges' g=0.643', so SW educational activity can get a CT improvement of about 24% over other educational activities. 2) EPL is a SW teaching-learning method that greatly improves students' CT. 3) Since SW education can be guaranteed to improve CT among elementary school students and university students, essential SW education for these should be further promoted. And it was found that SW education activity were more effective for CT improvement in small cities & rural areas than big cities, but the cause was not identified, so further study will be required.