• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.17 no.4
• /
• pp.86-98
• /
• 2018

Since 2015, the Korea Expressway Corporation has provided predicted travel time information, which is reproduced from DSRC systems over the extended expressway network in Korea. When it is open for public information, it helps travelers decide optimal routes while minimizing traffic congestions and travel cost. Although, sutiable evaluations to investigate the reliability of travel time forecast information have not been conducted so far. First of all, this study seeks to find out a measure of effectiveness to evaluate the reliability of travel time forecast via various literatures. Secondly, using the performance measurement, this study evaluates concurrent travel time forecast information in highway quantitatively and examines the forecast error by exploratory data analysis. It appears that most of highway lines provided reliable forecast information. However, we found significant over/under-forecast on a few links within several long lines and it turns out that such minor errors reduce overall reliability in travel time forecast of the corresponding highway lines. This study would help to build a priority for quality control of the travel time forecast information system, and highlight the importance of performing periodic and sustainable management for travel time forecast information.

• Progress in Medical Physics
• /
• v.19 no.3
• /
• pp.150-156
• /
• 2008

An applied technique of contrast enhancement for X-ray image is proposed which is based on combined enhancement of scaling and wavelet coefficients in discrete wavelet transform space. Conventional contrast enhancement methods such as contrast limited adaptive histogram equalization (CLAHE), multi-scale image contrast amplification (MUSICA) and gamma correction were applied on scaling coefficients to enhance the contrast of an original. In order to enhance the detail as well as reduce the blurring caused by up scaling of contrast modified scale coefficients from lower resolution, the sigmoid manipulation function was used to manipulate wavelet coefficients. The contrast detail mammography (CDMAM) phantom was imaged and processed to measure the image line profile of results and contrast to noise ratio (CNR) comparatively. The proposed technique produced better results than direct application of various contrast enhancement methods on image itself. The proposed method can enhance contrast, and also suppress the amplification of noise components in a single process. It could be useful for various applications in medical, industrial and graphical images where contrast and detail are of importance.

• Journal of Korean Academy of Nursing
• /
• v.22 no.4
• /
• pp.569-588
• /
• 1992

This study examined the relationship between the experience of stressful life events and somatic symptoms of urban women. Data were collected by interviewing 200 women from June to July 1, 1991. Vsable data work obtained from 162 of the women. Modified version of a stressful life events measurement tool developed p.5. Lee (1984) and the Somatic Discomfort Inventory by Wittenborn were used to measure the variables. Data were processed by an 5.p.5.5. program and analyzed. statistically for percentage, T-test, ANOYA and Pearson Correlation coefficient. Result of the Study are as follows : 1) The group total mean score of stressful life events was 92.66 $\pm$ 10.41. The higher scores in the $\boxDr$Test and school$\boxUl$ of the Extrapersonal factor, in the $\boxDr$Health problems$\boxUl$ of the Intrapersonal factor and $\boxDr$Conflict and differences within the family$\boxUl$ of the Interpersonal factor, factors. which a suggested by Neuman's model. 2) The group total mean score for somatic symptoms was 100.41$\pm$9.74. The higher scores were for the factors of $\boxDr$Fatigue (1.94)$\boxUl$, $\boxDr$Menopause (1.74)$\boxUl$, $\boxDr$Muscular system(1.67)$\boxUl$ and $\boxDr$Sleeping (1.67)$\boxUl$ 3) The mean scores of stressful life events were higher in the 40~60 age group, for middle school graduates(P＜.05), career women and those in nuclear families (P＞.05). 4) The mean scores of somatic symptoms were higher in the 45~60 age group, for middle school graduates, non career women and women with 5 or more children(P＜.05). 5) There was a positive correlation between the scores of stressful life events and somatic symptoms (r＝.585 P＜.05). The higher the level of stressful life events the higher the score of somatic symptoms, the results were consistent with the Extrapersonal, Intrapersonal and Interpersonal stress factors of Neuman's Health Care Systems. This research assessed the stressful life events of women, who play the most important role in the family for illness prevention and health promotion and suggested the importance of programs in the Primary Health Services to build basic coping resources.

• Journal of the Korean Geotechnical Society
• /
• v.27 no.9
• /
• pp.13-24
• /
• 2011

The renowned Terzaghi's one-dimensional consolidation theory is not applicable to quantification of time-rate settlement for highly deformable soft clays such as dredged soil deposits. To deal with this special condition, a non-linear finite strain consolidation theory should be adopted to predict the settlement of dredged soil deposits including self-weight and surcharge-induced consolidation. It is of importance to determine the zero effective stress void ratio ($e_{00}$), which is the void ratio at effective stress equal to zero, and the relationships of void ratio-effective stress and of void ratio-hydraulic conductivity for characterizing non-linear finite strain consolidation behavior for deformable dredged soil deposits. The zero effective stress void ratio means a transitional status from sedimentation to self-weight consolidation of dredged soils. In this paper, laboratory procedures and equipments are introduced to measure such key parameters in the non-linear finite strain consolidation analysis. In addition, the non-linear finite strain consolidation parameters of the Incheon clay and kaolinite are evaluated with the aid of the proposed methods in this paper, which will be used as input parameters for the non-linear finite strain consolidation analyses being performed in the companion paper.

• Korean Journal of Health Education and Promotion
• /
• v.12 no.1
• /
• pp.47-71
• /
• 1995

This research has been attempted to measure health acknowledgement and needs of 1158 respondents, the parents of elementary, middle, and high school students, residing in Seoul and In-chon. 1. The majority of parents had high interests in health and their children's health education. In addition, more than half of parents showed positive responses in their willingness to participate in organizational activities. 2. 41.7% of parents thought that their children were receiving health education regularly. For their recognitions of the course title, 'Physical Education' was the most highly recognized by the parents of elementary and middle school students, and 'Military Drill' for the parents of high school students. 3. A high number of parents perceived the problems of school health education. 4. There was a high number of parents, who thought that health education teachers' knowledge was deficient, and 86.3% of them agreed that additional education for 33the teachers should be desired. 5. 95.5% of parents acknowledged the necessity of health education; 78.8% of them recognized the reinforcement of health education; and 60.0% of them percepted the necessity of establishing the independent health education courses. 6. For the matter of instruction period, the majority of parents responded that health education should be taught from "kindergarten" and "elementary school". For the appropriate instruction hour per a week, the majority answered 1 hour. Most respondents answered that those, who majored in health education, should be the appropriate teachers. 7. The survey result indicated that there was a close correlation between the cognition of the importance of health education and the correspondents' health educational background, their interest and willingness to participate in health education. 8. The most desired areas of health education were Safety Education and Health-Habit. The followings were Environmental Health, Prevention of Disease, Mental Health, Growth and Nutrition, and Drug-Abuse in a sequent order. The parents of elementary school students showed a high acknowledgement on Health-Habit, Growth and Nutrition, and Prevention of disease, Safety Education. On the other hand, as the children entered into the advanced schools, the parents' recognition of the health education needs shifted into Sex education, Drug Abuse, and Mental Health. 9. Those respondents, who recognized the necessity of health education and advocated the establishment of independent health education courses, had a strong demand for the implementation of the health education.

• Journal of the Korean earth science society
• /
• v.25 no.8
• /
• pp.719-730
• /
• 2004

The International Astronomy Olympiad (IAO) was established and its foundation were published by the Euro-Asian Astronomical Society (EAAS), in order to spread astronomical knowledge, promote international cooperation in astronomical education area, and recognize the importance of astronomy in far-reaching field of science and human culture. In 1996, the first IAO was held at the Special Astrophysical Observatory (SAO) of the Russian Academy of sciences (RAS) located in the north Caucasus of Russia. Since then, it has been held every year. Here, we will describe the present status of the International Astronomy Olympiad, its major results by year, related institutions, organizations, and the main regulations regarding its operation. In order to measure the levels of scientific knowledge and thinking abilities, we develop a rubric to analyze the characteristics of problems in the IAO with regards to cognitive aspects of scientific inquiry. These problems require high levels of content knowledge and scientific method knowledge. Also high order thinking abilities and high levels of convergent thinking skills, instead of divergent, are needed to solve these problems. Thus, the problems presented are set a high difficulty. Through this analysis, we can understand main purpose of the International Astronomy Olympiad and explore the future direction of the Korea Astronomy Olympiad.

• The Journal of the Korea Contents Association
• /
• v.14 no.10
• /
• pp.64-72
• /
• 2014

As the importance of interface became emphasized recently, function of icon as an element that helps operation and formative function as an aesthetic element are becoming emphasized. Specially, various research methodologies for measuring the understanding degree of users are being attempted in functional aspect, however, they are facing limitations as user evaluation method of quantitative investigation for statistical analysis became overly dependent on the consent from majority. To overcome such limitation, a methodology of measuring sensibility as aesthetic impression or individuality based on the system of emotion or system of understanding of users and designing icon based on the measurement is being attempted continuously. Therefore, this study suggested an evaluation method using reminding words and conducted an empirical study to apply results on the icon design by applying the evaluation method on icon design of printing products to measure the user sensibility and understanding level. Through this process, this study intended to research summaries on the design evaluation method which based on the evaluation of user sensibility and understanding level and to debate effective design methodologies through the process of applying these summaries on the project. The intention was to progress discussion from practical application perspectives apart from the textbook type discussion by applying a research methodology through concrete cases. This study objectified sensibility and understanding level of users in the icon design aspect, suggested a methodology that can be applied on the design, and it is expected to be used when progressing the icon and GUI design.

• Journal of the Korean Society of Radiology
• /
• v.6 no.4
• /
• pp.313-320
• /
• 2012

Current medical institutions with the development of medical technology to the increased demand for health use of radiation equipment is increasing rapidly. Direct radiation from the patient receives the aim of reducing exposure as much as possible is important and the spatial dose of scattered radiation with in the space to engage in reducing healthcare physician, radiation workers and carers need to reduce indirect exposure. X-ray radiation workers and caregivers in the X-ray room to wearing of protective clothing is advised. However Radiation worker sand caregivers of patients with secondary is done, by wearing protective clothing to wear protective clothing because of the weight and discomfort have been neglected. In this study, based on the presence or absence of clothing scattered radiation from space to measure distances, depending on the horizontal and height by measuring the angle of the importance of wearing protective clothing were investigated.

• Asia pacific journal of information systems
• /
• v.19 no.1
• /
• pp.83-111
• /
• 2009

Despite the growing emphasis on the importance of knowledge exchange among supply chain participants, few companies have fully exploited the knowledge resources held by their supply chain partners. Among many reasons for this phenomenon, recent literature on inter-firm knowledge exchange identifies knowledge complementarities between the supply channel partners as an important determinant of knowledge exchange. Firms participating in a supply chain are likely to exchange partners' complementary knowledge. In order to extract value from them, it is important to recognize the difference between the potential value and the implementation of this potential value. However, the literature fails to distinguish between potential knowledge complementarities and implemented knowledge complementarities. In order to realize the value of potential knowledge complementarities, knowledge should be exchanged and effectively integrated in the supply channel. Further, investigating inter-firm knowledge exchange from both partners' perspectives is important especially when there are interdependencies between the channel partners. The purpose of this research is to investigate the impact of potential knowledge complementarities on knowledge exchange in buyer-supplier relationships by looking at both partners' perspectives. This research also includes trust in partner's competence and inter-organizational information systems (IOIS) as they are relevant when the complementary knowledge flows between organizations. The data required for this field study was collected from 70 buyers and their suppliers in three multinational enterprises in two different industries (Automobile manufacturing and Telecommunication services) headquartered in Korea. The results indicate that potential knowledge complementarities between buyer and supplier do not directly influence knowledge exchange, but indirectly through trust in partner's competence. And the results indicate that competence-based trust and IOIS have direct effects on knowledge exchange. Empirical results also show that IOIS moderates the relationship between potential knowledge complementarities and knowledge exchange. This study is a first attempt to empirically verify the theoretical model about potential knowledge complementarities and to investigate the impact of potential knowledge complementarities on interfirm knowledge exchange. From a theoretical perspective, this study not only clarifies the distinction between potential knowledge complementarities and implemented knowledge complementarities, but also develops an instrument to measure the concept of potential knowledge complementarities in the context of operational and planning knowledge in a supply chain. Further, we develop a theoretical framework suggesting that potential knowledge complementarities of partners in a supply chain affect knowledge exchange directly and indirectly through competence-based trust. The findings from this study have some managerial implications for practicing managers as well. First, buyers should search for suppliers that have potential complementary knowledge, which can be integrated to create synergy through interfirm knowledge exchange. Furthermore, firms must develop mechanisms to identify potential complementary knowledge of partners. Second, firms should continue their endeavor to develop their own unique knowledge so that their knowledge can benefit the entire supply channel. Finally, trust among supply chain partners turns out to be an important factor for interfirm knowledge exchange. Therefore, effective management for engendering trustworthy buyer-supplier relationships should receive appropriate attention from managers.

• Journal of Sasang Constitutional Medicine
• /
• v.15 no.3
• /
• pp.88-99
• /
• 2003

Background and Objective : The status of development of instruments to assess the 'health status' reflecting the concept of Sasang Constitutional Medicine is still far from satisfaction, despite their importance in building basic data for health promotion, evaluation of effectiveness of treatment, health policy and so on. for these reasons the health scale of Sasang Constitutional Medicine shod be developed. Therefore as from of preliminary research, this study is to review the concept of health and symptoms in health status in Sasang Constitutional Medicine. Methods : It was researched as bibliologically with Dong-mu's chief medical writings such as ${\ulcorner}Dongyi$ Soose $Bowon{\lrcorner}$(東醫壽世保元)${\ulcorner}Dongyi$ Soose Bowon Sasang Chobongyun(東醫壽世保元四象草本卷)${\lrcorner}$ - Results and conclusion : 1. In Sasang Constitutional Medicine, it is suggested that Inherent vitality(命脈實數) has relations to health and Knowledge-Acting(知行) is a primary factor which affects health. And it is thought that Healthy condition(完實無病) is that human being has enough Healthy energy(保命之主) of Small viscera. 2. In Sasang Constitutional Medicine, it is thought that stool, urine, sweating and digestion become important indexes to measure the physical health state. 3. In Sasang Constitutional Medicine, it is thought that the mental health is in control of inclination of mind by golden mean(中庸) and in tranquillity of constant mind according to constitution. 4. In Sasang Constitutional Medicine, it is thought that the social health is state thar can do social acting harmoniously by keeping away from alcohol, sexual appetite, property and power.