• Bulletin of the Korean Chemical Society
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• v.33 no.2
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• pp.492-498
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• 2012

A hyper branched 10-butylphenothiazine with in-situ thermally curable methacrylate (1,3,5-tris-[$\{$10-Butyl-3-(4-(2-methyl-acryloyloxy)-phenyl)-7-yl-10H-phenothiazine$\}$]-benzene, (tris-PTMA)) was synthesized successfully. From the TGA thermogram of tris-PTMA was thermally stable up to $336^{\circ}C$. In the first heating scan of DSC thermogram, tris-PTMA showed glass transition temperature (Tg) at $140^{\circ}C$ and broad endothermic process in the region of $144-179^{\circ}C$, which is thermally curing temperature. In the second heating process, $T_g$ exhibited at $158.7^{\circ}C$ and endothermic process was not observed. Thermally cured tris-PTMA showed no big change in the UV-visible spectrum after washing with organic solvent such as methylene chloride, chloroform, toluene, indicating that thermally cured film was very good solvent resistance. Thermally cured tris-PTMA was electrochemically stable and the HOMO energy level of tris-PTMA was -5.54 eV. The maximum luminance efficiency of double layer structured polymer light-emitting diode based on in-situ thermally cured tris-PTMA was 0.685 cd/A at 16.0 V, which was higher than that of the device without thermally cured tris-PTMA (0.348 cd/A at 15.0 V).

• The Journal of the Korea Contents Association
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• v.5 no.4
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• pp.54-61
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• 2005

Sixty years have passed since the police system was established in Korea. So far, there have been consistent discussions on independence of police investigational rights. Political powers have mentioned its independence as one of their public commitments and specifically, it has been a big issue in respect to establishment of the current participation government. The issues involved in investigational rights were derived from the regulations as follows: 'Prosecutors shall manage investigation(No. 195. the Criminal Procedure Act) and 'The police shall be guided by prosecutors in respect to investigation'(No. 195. the Criminal Procedure Act). President No Mu-hyun proposed he would take care of the issues involved in investigational rights at an interview. This study speculates investigational right systems of countries that follow continental law system and English law system and more valid investigational right system based on the guaranty of human rights and the principle of power division to find reasonable suggestions on independence issue.

• Korean Journal of Agricultural Science
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• v.38 no.2
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• pp.349-360
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• 2011

The international oil price have being fluctuated due to the exhaustion of fossil energy problem became big social issue. Rural villages are relatively sensitive to the energy problem, reflecting the characteristics of rural sustainable and stable introduction of renewable energy sources that are available is essential. In addition, through the influx of young workers in rural areas to regain vitality, efforts to improve rural living environment has been under the rural newtown project. In this study, a survey aimed at rural dwellers through the AHP, interview to report of realization about renewable energy and review the current policies. The results of realization survey though AHP are as follows, (1) the advantage of the natural environment (2) the superiority of government supporting policy and being economic, (3) easy to use, (4) ecologically stable, and (5) policy stable, respectively. In addition, renewable energy sources among the inhabitants of rural areas by solar energy was the highest score. The impact of regional characteristics compared with other energy sources receive little, easy to apply and has already been considerable technological development is considered.

• Management & Information Systems Review
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• v.1
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• pp.333-362
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• 1997

Since the profess of the reformation and opening Policy in 1978, China has been outstandingly developed its economy and increased the real scale of its economy 4 times as big as before, and is expected to rise as a superpower holding in check U.S.A even in economy as well as politics, military affairs and diplomacy in the 21st century. In this position, China has constantly tried to join WTO since 1986, as an effort to gain a status in the international society. It hsa been making various economic reformations to provoke a crustal movement in its own economy such as tariffs lowering measurement for the almost whole items, remove of restriction of import items, lowering the refunding rate of over deposit tax and annihilation of the special treatments for the foreign investment. In short, recently Chinese government is cutting down the special treatments for the foreign capital enterprises and changing the policy to the direction of gradually reinforcing the control, so it requires that our enterprises trying to advance and invest in China have to consider these carefully. Investment in China of our enterprises become serious since 1990 is focused on such labor intensive industries as textiles, sewing and shoes which lost the competitive power due to the wage increase. Particularly, Pusan economy having played the role of locomotive for Korean economy in the past developing period has been weakened in the competitiveness and not yet activated in 1990s. In terms of this, the enterprises engaged in such typical industries of Pusan as shoes, textiles and sewing have borne much fruit from the investment in China with abundant and cheap labors. However, from a few years the enterprises in Pusan invested in China due to the cheap labors and rich resources and invested in China have suffered much troubles and failures more and more resulted from the advancement without sufficient previous knowledge and information related to the investment including investment environment. Therefore, at the time of advancement in China, Korean enterprises should make their decision related to the investment, after taking these investment environment into account previously to a full extent and making an investment strategy.

• Journal of Digital Convergence
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• v.13 no.11
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• pp.157-164
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• 2015

This paper describes subspace clustering of categorical data for convergence and integration. Because categorical data are not designed for dealing only with numerical data, The conventional evaluation measures are more likely to have the limitations due to the absence of ordering and high dimensional data and scarcity of frequency. Hence, conditional entropy measure is proposed to evaluate close approximation of cohesion among attributes within each cluster. We propose a new objective function that is used to reflect the optimistic clustering so that the within-cluster dispersion is minimized and the between-cluster separation is enhanced. We performed experiments on five real-world datasets, comparing the performance of our algorithms with four algorithms, using three evaluation metrics: accuracy, f-measure and adjusted Rand index. According to the experiments, the proposed algorithm outperforms the algorithms that were considered int the evaluation, regarding the considered metrics.

• Journal of Digital Convergence
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• v.11 no.5
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• pp.245-256
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• 2013

The purpose of this study was to investigate the success factors of sports marketing companies in Korea. Four sport marketing companies were selected as research targets. Also, several data were collected through the books, articles, related literatures, and internet. In addiction, three in-depth interviews were conducted for the qualitative study. The results of this study was as follows. First, some sports marketing companies had been successful in business with big fund. Second, they used choice and focus strategies. Third, they had strategic and careful plans, and their own know-how for the blue ocean markets. Finally, they had expanded its business market by developing various strategies through the media.

• Journal of the East Asian Society of Dietary Life
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• v.13 no.6
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• pp.501-513
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• 2003

This study was conducted to investigate the relationship between general characteristics and the eating-out behaviors of 643 male/female industrial workers. The results of the study was summarized as follows. 1. The frequency rate of eating-out was higher for male than female, college graduates than high school graduates, high income earner than low income earner, and unmarried than married(p<0.05). 2. Average cost for eating-out was higher for male than female, for high educated and high income earner than low educated person. Age, married or not, personal health conditions and BMI, however, didn't make any difference in the average cost for eating-out. 3. Reasons fur eating-out was very different due to gender, age, degree of education income rate, married or not, BMI(p<0.05) but basically eating-out was due to get together with friends or colleagues. Also, people who thought they were not in good health answered that they did not eat-out in any conditions. Overweighted people ate out more often than normal or under-weighted people. 4. The method in gathering information about eating-out was different according to the level of education and whether married or not. On the other hand, gender, age, income rate, personal health condition and BMI did not make a big difference in its method. However, most People who Participated in the survey gathered information from people around them, such as friends/colleagues. 5. Taste was the most important factor in deciding the actual eating-out restaurant among the respondents and gender, age, level of education, married or not also made significant differences (p<0.05). 6. Besides personal health conditions and BMI, all the general characteristics including age made significant differences in selecting the most frequently visited restaurant. 7. Besides the personal health conditions, the transportation vehicle was different due to gender, age, level of education, income rate, married or not and BMI. As seen from the results, the eating-out behaviors mostly differed due to general characteristics. In order to searching for a new eating-out market, the general characteristics and the trend of the target customers has to be analyzed to activate the eating-out industry. In addition the need for highly nutritional food with low calorific value has to be emphasized along with the taste.

• The Research Journal of the Costume Culture
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• v.5 no.3
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• pp.1-25
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• 1997

The consumers, who are characterized by gathering a wide scope of information and by putting into action immediately, have come to the new group searching for emotion and have played a leading role of market. The characgeristics of consumers are the fact that they have followed the street fashion with no-concept, independent of the trends which the brand has provide for consumers. Therefore it leads to a big gap between the fashion information for enterprises and market formation for consumer class. The principal purpose of this paper is to get closer the distance between the information which is used in merchandise plan and real market for consumers, and to suggest the new direction of information management system in order to enhance the hit rate of merchandise plan. The results are as follows : (1) It is shown the enterprises should divide the information data between fashion information and market information, and understand the mutual relationship of them, and regard the statistical data related on the change of sensitivity and desire in market specialized in attributes of street fashion as the emotional expression\`s view, and manage them by the feedback style. (2) It is shown that enterprises should fully understand the fashion factors in the line of fashion stream with the independence of theme in order to plan the merchandise effectively for market which are specialized in the duality that it has both conservation and innovation at the same time, and detect their change. (3) It is shown that in order to predict exactly, enterprises should reflect the statistical data and the emotional factors in planning the merchandise, bring up the systematic organization, expert system. (4) It is also shown that enterprises should make an effort to pursuit the discriminated brand through the feedback management in which the consumer\`s lasting desires are reflected.

• Plant Journal
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• v.15 no.4
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• pp.43-51
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• 2019

The stress concentration of the integral welded attachments (IWA) often used to support piping system has been a big issue because it induces local stresses in piping. The method to evaluate local stresses associated with attachments on elbows has been suggested in EPRI TR-107453. However, there are limitations regarding specific parameters range in order to use correlation equation. In this paper, parametric study based on piping elbow size and attachment dimension was performed utilizing finite element analysis (FEA) to evaluate the secondary stress indices of hollow circular cross section welded attachments on piping elbows with the extended parameters range. The results of the FEA were used to develop correlation formulas for calculating secondary stress indices. The empirical equations in this study are suggested as an alternative evaluation method of EPRI TR-107453 by extending parameters range.

• Journal of dental hygiene science
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• v.7 no.4
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• pp.243-249
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• 2007

It has passed 40 years since dental hygiene was introduced to Korea. At this time, We hereby demonstrate the findings from the survey on the academic definition and developmental direction of dental hygiene. This survey has been conducted on dental hygiene majoring students, dental clinic hygienists of health & medical care and related professors in the dental field. The findings show that there exists a big disparity in defining the academic scope of dental hygiene among students, clinical dental hygienists of health & medical care and university professors. Accordingly, we suggest that the academic scope of dental hygiene should be explained in a uniform definition. In addition, the results of this survey suggest that they feel that the status of dental hygiene is really behind other study fields, in view of such high response thereto. For development of dental hygiene study and enhancement of its social status, the joint professional study by private, government and scholars should be immediately promoted and a wide variety of programs for dental hygiene should be continuously implemented under the auspices of government and academic world.