• The KIPS Transactions:PartA
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• v.13A no.4 s.101
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• pp.351-362
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• 2006

This paper proposes an adaptive inter-agent communication protocol to considerably reduce the amount of agent location information maintained by each service node and the message delivery time while avoiding the dependency of the home node of a mobile agent. To satisfy this goal, the protocol enables each mobile agent to autonomously leave its location information only on some few of its visiting nodes. Also, it may significantly reduce the agent cache updating frequency of each service node by keeping the identifier of the location manager of each agent in the smart agent location cache of the node. Simulation results show that the proposed protocol reduces about $76%{\sim}80%$ of message delivery overhead and about $76%{\sim}79%$ of the amount of agent location information each service node should maintain compared with the traditional one.

• Journal of the Korean Society of Physical Medicine
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• v.9 no.2
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• pp.171-179
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• 2014

PURPOSE: The objectives of this study were to investigate the effects of physical therapy provided at home on the motor function, activity of daily living (ADL), and level of pain in veterans men with disabilities, and to provide the information. METHODS: The participants were 108 patients men with disabilities living in the cities Seoul, Pusan, Daegu, Gwangju and Daejeon; they performed physical therapy at home-provided by physical therapy services- that included therapeutic exercise for 50 minute, 1~2 times a week for 24 weeks. The motor function was measured by using motor assessment scale (MAS) and ADL, the level of pain were recorded both before and after physical therapy. The data form both before and after physical therapy were analyzed by using the paired t-test. All statistical tests in this study were performed with the level of significance set at .05. RESULTS: After 24 weeks of physical therapy, we observed significant improvement in the MAS and ADL scale, as well as significant decrease in the level fo pain in the participants (p<.01). Significant improvement was also observed in the MAS and ADL scale, as well as a decrease in the level of pain among participants with stroke and spinal disease (p<.05). CONCLUSION: The findings of this study show that physical therapy provided at home can lead to an improvement in the motor function as well as improved ADL and pain control; physical therapy also has positive effects in relieving symptoms of veterans with disabilities.

• Applied Chemistry for Engineering
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• v.25 no.1
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• pp.47-52
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• 2014

A series of liquid crystalline polyesters containing X-shaped mesogenic groups in main chain were synthesized through the solution polymerization of 2,5-di(4-substituted benzoate)hydroquinones and 4,4'-dicarboxy-1,8-diphenoxyoctane. The structures and properties of synthesized polymers were investigated by $^1H$-NMR, FT-IR, differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), polarized optical microscopy (POM) and wide angel X-ray diffraction (WXRD). Inherent viscosities (${\eta}_{inh}$) of polymers were measured between 0.35 and 0.66 dL/g in 1,1,2,2-tetrachloroethane, and they were easily soluble in most of organic solvents used for this experiment. All polymers revealed relatively low melting transition temperature ($T_m$) and crystallinity, and also showed thermotropic nematic liquid crystallinity when they were heated to their melting temperatures. These properties of polymers were presumably due to the presence of the bulky substituting groups on the hydroquinone unit in mesogenic group.

• Journal of Distribution Science
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• v.4 no.2
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• pp.145-165
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• 2006

China has been recognized as the land of opportunity to provide valuable assets owing to dramatic economic developments in a recent year. In particular, automobile industry in china has been noticed by MNCs due to increasing of both steady demands and positive further expectations. The primary purpose of this case research is to examine distinctive channel strategy of automobile environment in China from the viewpoint of Dongfeng Yueda-Kia Motor. In order to accomplish of this, we visited production factory and sales office located in Shanghai, China during the period from April 20 through April 23, 2006. We expect that this case study provides with more opportunity to contribute to practical implications for Korean MNCs which do not entry china market yet.

• Land and Housing Review
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• v.12 no.4
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• pp.1-13
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• 2021

This study investigates the effectiveness of Jeju's public Wi-Fi policy for which the key factors of public Wi-Fi use and location characteristics are analyzed. Spatial regression analysis was conducted within a 100 m radius of public Wi-Fi access points. In the analysis, the dependent variable was public Wi-Fi usage time while independent variables included demographic factors, location factors, and other factors. The findings reveal that demographic factors such as the number of residents, the number of workers, and the number of visitors had a close correlation with the use of public Wi-Fi. In addition, the number of bus stops and land prices of each parcel, land use mix, and AP installation period had a positive correlation with the use of public Wi-Fi. On the contrary, the number of buildings by use, the total floor area of buildings, and the number of tourist attractions had negative correlations with public Wi-Fi usage time. These findings provide policy implications that more active publicity on Jeju's public Wi-Fi is needed and the convenience for access needs to be improved.

• The Journal of the Korea Contents Association
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• v.19 no.1
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• pp.187-195
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• 2019

The purpose of this study is to investigate the effect of tourism councils on the activation of rural tourism by comparing the rural tourism sites with the tourism councils and the rural tourism sites without tourism councils. The comparative indicators were divided into statistical quantitative indicators such as number of tourists, sales volume, and income level, and qualitative indicators of satisfaction, return visit, and word of mouth intentions. As a result of the study, it was found that all the items of the quantitative and qualitative indicators were active in the rural tourism area where the tourism council was composed. This can be attributed to the fact that the members of the tourism council consist of administrative agencies, experts, tourism operators, experts, etc., and constantly develop strategic programs such as diverse opinions and unique constellations. Therefore, in order to revitalize rural tourism in the future, it can be said that the tourism council should be constructed, and institutional devices should be prepared so that experts and residents in each field can participate equally.

• The Journal of the Korea Contents Association
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• v.19 no.1
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• pp.152-162
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• 2019

In Korea there has been scant research on VR games. This work focuses then on college students' perceptions of VR games, factors motivating them to experience VR games, the important features of VR games. This study presents the results of in-depth interview with 10 college students who had recently experienced VR games. VR games, it is found, provide a high level of virtual reality, immersiveness, and controllability. Such attributes may be considered distinctive to mobile, PC, and video games. Gamers' intention to re-experience VR games is influenced by the following important factors: 4D effects in VR games, various VR game contents, freedom in games, unique experience chances, sense of reality, sense of thrill, action-based experiences, and playing in group (multiple player). Study findings also suggest that three important features in VR games known as immersion, engagement, and virtual presence play a pivotal role in influencing positive attitudes toward VR games. Practical implications are also discussed.the help of information technology.

• 한국노년학
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• v.32 no.4
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• pp.961-973
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• 2012

The aims of this study are to identify levels of diabetes self-care activities and find associated factors of the elderly with Type 2 diabetes. The participants for this study were 264 elderly Koreans over 65 years old who visited one general hospital in S city in South Korea for their medical treatment. In the results, there are few statistically significant differences in general characteristics and disease related variables according with diabetes self-care activities (DSCA). DSCA showed negative correlation with depression (r=-.278, p=.033) and positive correlation with ADLs(r=.310, p=.013)and IADLs(r=.415, p=.001). Therefore, the findings of this study suggest implementing self-care activities to the elderly with diabetes based on their psychological factors (depression) and functional capacities (ADL and IADL). In addition, the advanced research will be needed for developing tailored nursing educations and interventions to improve diabetes self-care activities of elderly patients.

• Journal of Convergence for Information Technology
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• v.11 no.5
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• pp.259-266
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• 2021

This paper sought to help north Korean women understand their lives and seek to integrate the in-house between North and South Korea by organizing the overall reality of north Korea's fashionable hairstyles and beauty industry. The research method looks at the appearance management activities of North Koreans in north Korean media, media outlets, and testimonies of north Koreans who have been on the outstay since Kim Jong-un's ruling, among other things, and analyzed their hair activities. C. Studies have shown that some improvements have been made since the Kim Regime through the smuggling of foreign goods by yusists. In addition, it was confirmed that beauty education is being systematically edied out through a beauty training institute in North Korea, and that it has changed from a fixed salary system to an ability-based allowance. This study shows a limitation that north Korea has failed to study. It is believed to be a boon to future research on North Korean hair.

• Korea Journal of Hospital Management
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• v.26 no.2
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• pp.56-67
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• 2021

Background: Regular doctor visits are vital for hypertension patients, especially for who have never received hypertension medication or non-pharmacologic therapy. This study purposed to study factors affecting outpatient visits for patients diagnosed with hypertension. Methods: This study included 59,009 respondents with hypertension over 30 from 2019 Community Health Survey data. Outpatient visits were defined by having hypertension treatments such as medication or non-pharmacologic therapy. Logistic regression was used to examine the factors affecting outpatient visits using SAS ver. 9.3. Results: 57,081(96.73%) patients with hypertension were identified as those having a outpatient visit for hypertension treatments, whereas 1,928(3.27%) patients did not have visits. Patient's characteristics such as gender, age, periods of hypertension, education level, perception of the blood pressure, hypertension management education, place of living, body mass index, depression and diabetes were found to have statistically significant relationship with the outpatient visits. Practical Implications: There is a need to select patients with high blood pressure who are unlikely to visit for hypertension treatments based on the study results. For those, establishing a personalized management plan such as health education and counseling programs will be helpful for the successful implementation of national chronic disease management program.