• Korean journal of communication and information
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• v.79
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• pp.140-164
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• 2016

What is an appropriate length of an article in the mobile era producing new tastes of contents combining computing and mobile communication? Is it still valid to have a lengthy article as high level journalism even in the mobile era? Is there any possibility to have a short article combination to give us readability and the amount of information? This study aims to find some answers to these questions. The length of articles were controlled with a field experiment; from an article of 346 syllables(including spaces between syllables) which does not need finger scrolling on a mobile phone to articles of 633, 1033, 1368 syllables(including spaces between syllables) which frequently appear in newspapers and broadcasting news program. All the main themes were same for 4 articles which have different length. Three hundred and eighty four students viewed one of the 4 articles through mobile phone or newspaper. Each participant checked their preference and evaluated quality on the article, were asked to recall contents of the article. In newspaper group, articles with 346 or 1033 syllables were highly evaluated. Mobile group seemed to prefer articles of 346 or 633 syllables. In conclusion, we need to consider various strategies shortening the length of an article into 346 or 633 syllables as a basic format to meet the neEds of mobile era.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.8
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• pp.974-985
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• 2016

Riverbed Modeler, which is a commercial packet-level discrete event simulator is used to model, design, and simulate complicated communication protocols and large-scale network. Riverbed Modeler got credit for its reliability in field of network simulation. In the MANET simulation environment using Riverbed Modeler, it is very complicated to add a new routing protocol into existing architecture of routing protocols because it is required lots of modifications of protocol recognition. In this paper, we propose Routing Adding Framework which can reduce errors or mistakes during modifying the existing routing support architecture. Routing Adding Framework is provided as a adapter API for protocol recognition. and it is only minimum modifications for protocol identifiers when a new routing protocol is added to the child process of manet_mgr process which manages routing protocols for IP layer. With Routing Adding Framework, we can reduce less than half modification. Then, we shows an example of implementation of a hybrid routing protocol AntHocNet using Routing Adding Framework, and we verify its design and application of the Routing Adding Framework by obtaining simulation result with similar result given by AntHocNet.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.8
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• pp.986-994
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• 2016

In this paper, we proposed ultrasonic radar module and fixed module for the 2D indoor map building and from each of the modules, we can see the possibilities, limitations and considerations. And finally show the result of building actual 2D indoor map from the modules. Recently there are lots of works for the building indoor map by spotlight on the simultaneous localization and mapping (SLAM). And the LiDAR, ultrasonic, camera sensors are usually used for this work. Especially the LiDAR sensor have a higher resolution and wider detection range more than the ultrasonic sensor, but also there are limitation in the size of module, higher cost, much more throughput of processing data, and weaker to use in various indoor environment noises. So from these reasons, in this paper we could verify that proposed modules and schemes have a enough performance to build the 2D indoor map instead of using LiDAR and camera sensor with minimum number of ultrasonic sensors and less throughput of processing data.

• Journal of The Korean Association of Information Education
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• v.20 no.3
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• pp.293-302
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• 2016

It is the latest fashion of interesting with software education in public school environment and also consider as high priority issue of curriculum for college freshman with programming 101 courses. The block-based programming tool is used widely for the beginner and provides several positive features compare than text-based programming language tools. To measure quality of programming code elaborately which is based script language, it is need to very tough manual process. As a result the previously research related with evaluation of block-based script code has been focused very simple methods in which normalize the number of blocks used which is related with programming concept. In such cases in this, it is difficult to measure structural vulnerability of script code and implicit programming concept which does not expose. In this research, the framework is proposed which enable to measure and evaluate quality of code script of block-based programming tools and also provides method to find of vulnerability of script code. In this framework, the quality metrics is constructed to structuralize implicit programming concept and then developed the quality measure and vulnerability model of script to improve level of programming. Consequently, the proposed methods enable to check of level of programming and predict the heuristic target level.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.6
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• pp.482-494
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• 2016

This study examines the longitudinal trends regarding awareness of informatization, Information Technology (IT) use, and attitudes towards IT among older adults aged 60 or over. Surveys were conducted in 2004 and 2014 at senior welfare centers in Seoul, Korea. The trends between 2004 and 2014 showed that the rate of Internet use increased among older adults who lived alone, were aged 70 or over, had middle education level, had low income, or were unemployed. Older adults had positive attitudes towards IT, and users were more positive than non-users. The levels of IT use were low among users, and their reasons for IT use were for psychological, emotional, and practical purposes. For non-users of IT, their passive tendencies toward IT use and informatization were amplified. As such, the state of IT use and attitudes toward it among older adults in Seoul were longitudinally different, and the differences in awareness and ability between users and non-users tended to increase.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.6
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• pp.140-146
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• 2016

A survey was conducted of the total of 57 adults with disabilities from 60 years old to more than 20 years old residing in Jeju Island in which they were interviewed three times in May 2015. Supplementary data was provided by one of the male adults with disability who acts as a lecturer and helped to improve our awareness of the disabilities. The following conclusions were drawn from this research: First, as regards the effect of the economic activity of the disabled on their self-efficacy, their economic activity does not have any significant effect on their self-regulating efficacy and task difficulty preference, but does have an effect on their self-confidence. Third, according to the $Scheff{\acute{e}}$ verification on the differences in the self-efficacy of the disabled depending on their economic activity, employment (M=23.48, p<.04) and lecturer activities (M=22.06, p<.04) (had a greater effect?) than unemployment (M=18.93, p=<.04) but no difference between their employment and lecturer activities was found.

• The Journal of the Convergence on Culture Technology
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• v.4 no.3
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• pp.15-26
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• 2018

This is a qualitative study conducted to understand and explain the experience of nursing students' exploring historic sites of independence movement overseas. The study's participants were 24 nursing students in the first and second graders who participated in a program to explore the historic sites of independence movement overseas at a college in C County, Gyeongsangbuk-do. The data collection period was from December 23, 2017 to December 25, 2017. The data collection was carried out in an open self-reporting process, and the collected data were analyzed using the qualitative content analysis method of Krippendorff[13]. Based on the analysis of the experience of nursing students' exploring historic sites of independence movement overseas 19 sub-theme, 10 themes, and 4 categories were derived. The four categories are "Our History Represented in the wake of the independence movement", "Footprint projected of an independent activist ", " Rage Boiling But Hope Remaining", "blooming patriotism through reflection". The results of this study provided an understanding of nursing students' experience in exploring the historical sites of independence movement and have shown that nursing students had the opportunity to recognize the history of independence movements, inspire patriotism and reflect on their attitude as nurses. In addition, institutional efforts and resources should be supported to address the lack of policies on the preservation of the historic sites for independence movements overseas, which are dependent on the private sector.

• The Journal of the Convergence on Culture Technology
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• v.4 no.3
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• pp.51-62
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• 2018

Unlike in the past, culture and the arts are now being recognized as key elements for gaining competitive advantage, changing the approach and enjoyment methods of culture and art. The purpose of this study was to investigate the effect of participation of culture and art activities on the performance of the executives and staff members at M Financial Company. The study resulted in four different findings. First, creative activities have a positive effect on job commitment, but appreciation activities have no statistically significant effect on job commitment. Second, although appreciation activities have a positive effect on creative behavior, it has been confirmed that creative activities have no statistically significant effect on creative behavior. Third, job commitment has a significant effect on creative behavior. Fourth, the relationship between job commitment and job performance shows that job commitment affects job performance positively; creative behavior also positively affects job performance. Finally, we examined the mediating effect between participation in culture and art activities and job performance with job commitment and creative behavior. As a result, job commitment and creative behavior are found to mediate between creative activities and job performance. However, it did not mediate between appreciation activities and job performance. On the other hand, the mediating effect of creative behavior between job commitment and job performance was partially mediated.

• Journal of Digital Convergence
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• v.16 no.8
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• pp.57-69
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• 2018

The purpose of this study is to investigate the influence of the social welfare service delivery system of Namyangju City on the satisfaction degree of the elderly with welfare services and on their quality of life. This study conducted a survey of the elderly aged 65 and over who were either service users or nonusers of the public-private partnership welfare service delivery system called Hope Care Center. A total of 324 copies including 205 copies of Hope Care Center users and 119 copies of nonusers were analyzed. The analysis shows that the four key elements of welfare service delivery system are statistically significant to the service users of Hope Care Center than the nonusers with the users' higher level of satisfaction with the services. However, in terms of quality of life, there was no meaningful distinction between the two groups. This indicates that services of Hope Care Center increased the satisfaction with welfare services, thereby improving users' quality of life to the level of nonusers. Further studies for the same subjects are expected to be deeper if they compare and analyze the before and after of using Hope Care Center with more comprehensive independent variables.

• The Korean Journal of Applied Statistics
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• v.31 no.4
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• pp.427-446
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• 2018

Korea will have a super-aged society within only 30 years according to the United Nations' definition of an aging society and the statistics on Korea's Population projections (2016), indicates that Korea has the fastest ageing speed in the world. There is a lack of data on long-term time-series data on death as related to pension and welfare policies compared to the rapid rate of aging. This paper estimates life expectancy over 245 years (from 1955 to 2200) through past and future forecasts as well as compares the expected life expectancy of the synthetic cohort and the real cohort. In addition, an international comparisons were made to understand the level of aging in Korea. Estimates of the back-projection period were compared with previous studies and the LC model to improve accuracy and objectivity. In addition, the predictions after 2016 reflected the declined mortality rate effect of Korea using the LC-ER model. The results showed an increase in life expectancy of about 30 years over 60 years (1955-2015) with an expected life expectancy of the real cohort over the second century (1955-2155) higher than the synthetic cohort. The comparative advantage of life expectancy of real cohorts was confirmed to be a common trend among comparative countries. In addition, Japan and Korea have a higher life expectancy and starting from 85 to 90 years old, all comparative countries show that the growth rate for the life expectancy of synthetic and real cohorts is less than previous years.