• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2005.10a
• /
• pp.422-440
• /
• 2005

There are many kinds of research on web graph, most of them are focus on the hyperlinked structure of the web graph. Well known results on the web graph are rich-get-richer phenomenon, small-world phenomenon, scale-free network, etc. In this paper, we define a new directed web graph, so called the Web Usage Pattern Graph (WUPG), that nodes represent web sites and arcs between nodes represent a movement between two sites by users' browsing behavior. The data to constructing the WUPG, approximately 56,000 records, are gathered in the Kyungsung University. The results analysing the data summarized as follows: (i) extremely rich-get-richer phenomenon (ii) average path length between sites is significantly less than the previous one (iii) less external hyperlinks, more internal hyperlinks

• Proceedings of the KIEE Conference
• /
• 2006.07b
• /
• pp.1079-1080
• /
• 2006

This paper presents the methods to save energy by using load consumption pattern analysis. Base on the substation annual power usage data, the characteristic of the substation power consumption have investigated. With this investigation effective electrical billing condition and the control target load has been determined. Most of power usage comes from the motor car, so power system and load table of motor car were reviewed. And in the metropolitan area the peak power consumption occurs at summer or winter rush hours because of its typical characteristics. From this data control point of time are determined. Through the whole study the methode to control the power Peak consumption are proposed and prototype was designed.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.34 no.4
• /
• pp.120-128
• /
• 2011

Recent development of communication technology and evolution of telecommunications services, various needs of users are giving Telecom operators difficulties in discovering new services and its promotion strategies. In addition, at the launching of new services, if carriers does not consider complementary and substitution relationships with competing services or self-encroachment problem with the existing service profitability is reduced or lost in the current market. In this study, by analyzing usage pattern of telecommunications services respect to changes in supply and demand environment, the complementarity/substitutability analysis and systematic analytical framework is proposed. This study proposes approaches to establish mobile operators' business strategies and to identify new services demand.

• Proceedings of the Korea Technology Innovation Society Conference
• /
• 1999.11c
• /
• pp.137-141
• /
• 1999

• The Journal of Korean Obstetrics and Gynecology
• /
• v.26 no.2
• /
• pp.104-119
• /
• 2013

Purpose: The purpose of this study is to recognize menstrual pattern, stress, digestive disorder of female college students who have oligomenorrhea and effects of Gamiguibi-tang. Methods: We researched 30 female students who responded to have menstrual irregulation at ${\bigcirc}{\bigcirc}$ college by questionnaires investigating their menstruation, stress, digestive disorder, and changes of symptoms before and after taking Gamiguibi-tang. Results: 1. There was statistical correlation between menstrual pattern and Qi-Stasis Questionnaire symptoms. 2. There was statistical correlation between menstrual pattern and digestive disorder symptoms. 3. There was statistical correlation between improvement of Qi-Stasis Questionnaire symptoms and usage of Gamiguibi-tang. 4. There was statistical correlation between improvement of digestive disorder symptoms and usage of Gamiguibi-tang. Conclusions: This study showed the stress and digestive disorder symptoms are effectively relieved by Gamiguibi-tang. By this result we expect that Gamiguibi-tang can be used for oligomenorrhea caused by stress or digestive disorder.

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.13 no.4
• /
• pp.65-74
• /
• 2010

This study is for Hanbuk Mountain Range within Gyeonggi province which is to propose the conservation plan by each damage pattern through site survey of the mountain range. The damage patterns are classified by siding, pointing and lining. The total damaged area is 103 areas: The siding pattern is damaged by developing farmland, mineral and quarry mining, dam, large scale development complex and cemetery park; The pointing pattern is including the development of road, transmission tower and way and mountaineering trail; The construction of electricity and communication facility, military facility, mobile communication station, heliport and shelter. The damages by developing road and large scale development complex are the most cause, and military facility, dam and reservoir, and residential area are the main causes, respectively. One of the compromised situation Hanbuk-Mountain Range usage as per section 7 section (18.45%), 12 section (18.45%) is the largest number of compromised has been surveyed, undermine the situation if you look at the usage by the road 25 locations (24.22%), military facilities and dam and reservoir to undermine this 11 established respectively (10.68%) were the most undermine. Therefore, this research propose the conservation plan as follow: first, need to understand, educate and publicize on Hanbuk-Mounatin Range; second, manage through the regulations and ordinance of Gyeonggi province; third build and expand the law for protecting Baekdu-Great Mountain Range.

• Journal of the Korean Society of Industry Convergence
• /
• v.26 no.3
• /
• pp.443-454
• /
• 2023

The purpose of this study is to reveal the Korean learners' usage pattern of '의', the genitive particle, according to semantic classification, so that it can be referred to in determining the contents and methods of related education. The method of this study adopts a quantitative analysis using learners corpus established by National Institute of Korean Language. As a result of the analysis, as proficiency increases, the overall frequency of '의' increases and the number of meaning senses used increases. However, the frequency of errors also increases with it. As for the usage pattern of each sense, the meaning of 'ownership, belonging' is the most frequent, and followed by 'acting entity', 'kinship, social relations', and 'relationship(area)'. In conclusion, the meanings of 'acting subjects' and 'relationships(area) need to be supplemented with explicit education. Other meanings need to be discussed, and decisions should be made in consideration of learning purpose and proficiency.

• Journal of the Korean Society for information Management
• /
• v.27 no.1
• /
• pp.25-40
• /
• 2010

The purpose of this study is to analyze the usage pattern between each academic database through social network analysis, and to support the academic database for users's needs. For this purpose, we have extracted log data to construct the academic database networks in the proxy server of K university library and have analyzed the usage pattern among each research area and among each social position. Our results indicate that the specialized academic database for the research area has more cohesion than the generalized academic database in the full-time professors' network and the doctoral students' network, and the density, degree centrality and degree centralization of the full-time professors' network and the doctoral students' network are higher than those of the other social position networks.

• Survey Research
• /
• v.12 no.3
• /
• pp.123-142
• /
• 2011

This study examines how the family background and educational aspiration of adolescents affect the usage pattern of internet among adolescents. Recently, the focus of studies on digital divides shifts from the gap in the access to the internet to the difference in usage pattern of internet. Building on these studies, this study deals with the concerns that the difference in usage pattern of internet among adolescents potentially lead to the reproduction of social inequality across the generations. The analysis of the Korean Youth Panel Study reveals that the higher educational attainment and higher income level of parents, the children tend to spend more time in searching with the internet and spend less time in doing the internet game. The level of educational aspiration exerts similar effects on internet use of adolescents. The results also show that the effects of educational apsiration is larger among older adolescents. The implications and limitations of this study are discussed.

• Journal of Nutrition and Health
• /
• v.33 no.3
• /
• pp.332-342
• /
• 2000

Vitamin mineral supplement usage by self-prescription is popular behavior among adolescents. This study was conducted to investigate the behaviors of vitamin·mineral supplement usage and the relationship between demographic variables and supplement usage by healthy adolescents. Nine hundred seventy two boys and girls, aged 13-18 years, attending general middle or high schools were chosen from various cities and rural communities in Korea. As a result, vitamin·]mineral supplements were taken by 31.3% of subjects. Users tended to take vitamin·mineral supplements more frequently when they were healthy than when they suffered from disease. The taking period of supplements was different according to school type such as middle or high school(p<.05), sex(p<.001) and residence of subjects(p<.01). The main information source of supplements was newspaper/magazine/TV, and it was affected by sex(p<.05) and residence(p<.01). Vitamin·mineral supplements were generally recommended by their mothers instead of health professionals. The commonly cited taking reason of supplements was affected by sex(p<.01)and socioeconomic status of family(p<.05). The frequently responded effect obtained from supplement use was recovery from fatigue and it was different according to sex(p<.01). The major mentioned reason of not taking vitamin·mineral supplements by non-users was 'I eat a balanced diet'. The most frequently consumed supplements were vitamin C, followed by multi-vitamins supplements, and this pattern was different according to school type(p<.001), sex(p<.01) and residence(p<.05). These findings show that the behaviors of vitamin·mineral supplement usage by subjects are not resonable, and their supplement usage tends to be affected by demographic variables. Therefore, nutritional understanding and education that are intended to form the resonable behaviors toward vitamin·mineral supplement usage of adolescents should be provided with considering the relationship between demographic variables and supplement usage.