• Journal of Broadcast Engineering
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• v.18 no.4
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• pp.643-646
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• 2013

We present an improved AdaBoost algorithm to avoid overfitting phenomenon. AdaBoost is widely known as one of the best solutions for object detection. However, AdaBoost tends to be overfitting when a training dataset has noisy samples. To avoid the overfitting phenomenon of AdaBoost, the proposed method divides positive samples into K clusters using k-means algorithm, and then uses only one cluster to minimize the training error at each iteration of weak learning. Through this, excessive partitions of samples are prevented. Also, noisy samples are excluded for the training of weak learners so that the overfitting phenomenon is effectively reduced. In our experiment, the proposed method shows better classification and generalization ability than conventional boosting algorithms with various real world datasets.

• Journal of the Korean Society of Costume
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• v.67 no.4
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• pp.21-37
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• 2017

Fashion market in the past had a physical structure, and the supply and demand developed within that space. However, this has changed with the development of online fashion market, as it no longer requires physical space. The purpose of this study was to examine the satisfaction level of online shopping purchase based on the purchase motivation of women in their 20's. It aimed to look into how the online media affected the market, and find ways to improve the shopping malls according to the demands of the market. This study examined the effect of female students' online shopping motivation on their satisfaction with a premise that purchase motivation is related to the satisfaction level. The researched subjects were selected among female college students, and the regression analysis was done using the collected questionnaires. Results showed that economic purchase motivation, product purchase motivation, hedonic purchase motivation, and social purchase motivation had positive correlation to satisfaction level. The most influential factors to the satisfaction level were convenient purchase motivation and product purchase motivation, then social purchase motivation in shopping. Hedonic purchase and economic purchase were less influential than other factors in online shopping. Social purchase motivation factor is least influential when compared to others. As for detailed purchase motivations affecting the satisfaction level, reasonable price, latest fashion goods, interest and fun of online shopping, and the ease of shopping were important factors. The research result indicates that alternative shopping solutions can be better understood by examining the online shopping satisfaction according to purchase motivation, and improve current online shopping malls.

• Parasites, Hosts and Diseases
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• v.51 no.5
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• pp.537-544
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• 2013

The present study was performed to observe histopathological changes in tissues of Bithynia siamensis goniomphalos (Gastropoda, Bithyniidae) incubated in crude extract solutions of camellia (Camellia oleifera) seed and mangosteen (Garcinia mangostana) pericarp, and furthermore to estimate the molluscicidal effects of 2 plant substances. Substantial numbers of bithyniid snails were incubated in various concentrations of 2 plant solution for 24 hr. As the positive control, snails incubated in various concentrations of niclosamide, a chemical molluscicide, were used. The histopathological findings were observed in sectioned snail specimens of each experimental and control groups. The results showed that both camellia and mangosteen extracts had molluscicidal effects at 24 hr with 50% lethal concentration ($LC_{50}$) at concentrations of 0.003 and 0.002 g/ml, respectively, while niclosamide had $LC_{50}$ at concentrations 0.599 ppm. B. siamensis goniomphalos snail tissues (foot, gill, and digestive system) showed disruption of columnar muscle fibers of the foot, reduction of the length and number of gill cilia, numerous mucous vacuoles, and irregularly shaped of epithelial cells. Irregular apical and calciferous cells, dilatation of the digestive gland tubule, and large hemolymphatic spaces, and irregular apical surfaces, detachment of cilia, and enlargement of lysosomal vacuoles of epidermis were also shown in all groups. By the present study, it is confirmed that 2 plants, camellia and mangosteen, are keeping some substance having molluscicidal effects, and histopathological findings obtained in this study will provide some clues in further studies on their action mechanisms to use them as natural molluscicides.

• The Korean Society of Law and Medicine
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• v.14 no.2
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• pp.261-280
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• 2013

Recently several hospitals have established a new nursing position so called, 'the nurse in charge of education (NCE).' The job description of NCE is to give a detail explanation on examination or test introduced to patients or a guide for those who are not familiar to hospital facilities at the out-patients level. The motivation of NCE position is the quality improvement in patient education on the sophisticated procedures or the follow up care for medical purposes to improve their compliances, as well in delivering services for outpatients or visitors in more informative and efficient way. The application of NCEA has been turned out positive and effective in patient satisfaction and unit management. However, special attention is brought to the scope and depth of the contents of education delivered by NCE which might overlap with the duty of physicians by the Medical Act. It is needed to clarify the role and job description of NCE in the context of Medical Act. The engagement of NCE to the Advanced Nursing Practitioner (ANP) is one of the possible solutions for a duty charge on patient education since ANP is a legislatively official position with higher license of RN at master level. Further discussion is needed to elaborate and arrange the details on the scope and content of patent education among health science professionals including RN, ANP and physicians.

• Journal of Veterinary Clinics
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• v.29 no.4
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• pp.323-327
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• 2012

The effect of pH of chitosan solution (w/v) on antifungal activity against Malassezia pachydermatis isolated from a dog with otitis externa was evaluated. This study was investigated to find out the optimal pH of chitosan solution that could be able to eliminate yeast cells. For comparison of antifungal activity of chitosan solution 2% chlorhexidine that have been already proved the antifungal effect against M. pachydermatis was used as positive control. The chitosan solution at different pH (2.5, 3.0, 3.5, 4.0, 4.5, 5.0) were involved this experiment. The chitosan solutions at each pH could eliminate a number of yeast cells when they were compared to other antifungal agents. In chitosan solution's antifungal effect of varying degrees according to the pH M. pachydermatis was inhibited at pH of < 5.0. Especially it has been proved an effective antifungal effect at pH 3.5. Therefore, the pH of chitosan solution had a effect on antifungal activity and the optimal pH was 3.5 in vitro. The possibility of topical therapy with acidific solution of chitosan has a potential in skin infection against M. pachydermatis.

• Research in Community and Public Health Nursing
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• v.15 no.2
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• pp.266-276
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• 2004

Purpose: This study purposed to supply basic data for nursing intervention plan for middle-aged women healthcare and for finding solutions to nursing problems through understanding middle-aged women's depression, and to examine whether middle-aged women's depression is related with self-concept, self-efficacy, physical condition and social support. Method: The subjects were 200 middle-aged women aged between 35 and 60 and living in Daejon city and K city in Chungcheongnam-do, and the questionnaire survey was conducted from the 15th of August to the 18th of September in 2003 using a structured questionnaire. Collected data were analyzed through descriptive statistics, t-test, ANOVA. Pearson's correlation coefficient and stepwise multiple regression. Result: Middle- aged women's depression was found to be in a negative correlation at a statistically significant level with self-concept (r=-.679, p=0.000), self-efficacy(r=-.489, p= 0.000), physical condition(r=-.650, p=0.000) and social support(r=-.526, p=0.000). The most significant variables of middle-aged women's depression was self-concept(46.2%). Combining with physical condition(13.2%) and self-efficacy(0.9%), the three variables together explained 60.3% of middle-aged women's depression. Conclusion: The results show that middle-aged women's depression is closely related with self-concept, self-efficacy and physical condition. Thus this study suggests that the goal of nursing intervention for middle-aged women to overcome depression should be to help them to have positive self-concept, high self-efficacy and sound physical condition.

• The Journal of Korean Association of Computer Education
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• v.18 no.5
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• pp.45-54
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• 2015

There has been rising demand within the South Korean government and among various industries in recent years on the need for strengthening the competitiveness of the software industry, which they highlight as being a core element for national competitiveness. This strategy would require enhancing the job competency of software developers. This study's results show that computational thinking (CT), which is one of the more creative solutions to the problem, has a positive effect on the enhancement of software developers' job competency. Furthermore, the study finds that the software development tasks of simulation, algorithms and procedures, and parallelization (in that order) serve as influential elements for software developers, which differs from previous studies' findings. The South Korean government thus should emphasize education in these areas in order to enhance the nation's job competence. Because simulation, especially, has the greatest influence among these areas, there is a particular need to strengthen that area.

• Korean Journal of Occupational Health Nursing
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• v.22 no.2
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• pp.130-139
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• 2013

Purpose: This study was to identify the relationship among clinical nurse's job overload, self-efficacy, emotional exhaust and turnover intention. Methods: The study was conducted through a survey on 537 clinical nurses in five general hospitals. The data were collected by self-reporting questionnaires and analysed by the SPSS/WIN 17.0 program using descriptive statistics, t-test, ANOVA, Pearson correlation coefficient and stepwise multiple regression. Results: The mean score of turnover intention was 3.04. Turnover intention according to age, total career, job objective, and work off showed significant differences. The significant positive correlations between emotional exhaust and turnover intention (r=.531, p<.001), job overload and turnover intention (r=.514, p<.001) were found. The significant factors influencing turnover intention were emotional exhaust (${\beta}$=.488, p<.001), career (${\beta}$=.175, p<.001), job overload (${\beta}$=.119, p= .003), and number of night (${\beta}$=.117, p=.002), which accounted for 40.3% of the variance. Conclusion: Thought this result, nursing managers should analyze the reasons for high turnover intention, focusing on the main factors affecting turnover intention and consider the solutions to decrease the turnover intention.

• The Journal of Industrial Distribution & Business
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• v.11 no.3
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• pp.51-62
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• 2020

Purpose - This study examined the relationship between individual creativity and its related variables to observe how individual creativity contributes to organizational performance. In addition, this study strived to explore how to maximize the utilization of individual creativity and innovate the structure of the organization itself so that teams and organizations can respond more effectively to new rising trends. this study aimed to examine whether the value congruence between individuals and organizations (propensity congruence, goal congruence has a significant impact on knowledge sharing and innovation behavior as dependent variables by exerting individual creativity and synergy as independent variables. Research design, data and methodology - SPSS 24.0 program were used to analyze the data. Descriptive Statistics and correlation analysis were performed, and the reliability factor (Cronbach's α) was calculated. Afterwards, we analyzed the moderating effects of structural equation model analysis and hierarchical regression analysis. The number of samples used in the study were 309 copies. Results - First, Individual creativity had a positive effect on knowledge sharing and innovative behavior. In other words, it was confirmed that decision-making processes fused with individual creativity could create an atmosphere of knowledge sharing and transform the organization. Second, value congruence adjusted the influence of individual creativity on knowledge sharing and innovation behavior. Conclusions - First, it is important for managers to recognize the value and secure the pool of creative talents who will be a potential future basic source of organizational success and competitive advantage. Second, managers should be able to identify those with creative talents and expertise, and use them to increase their knowledge sharing performance, while also developing emotional and motivational creativity. Third, in order improve knowledge sharing performance, managers should pay attention to the emotional aspect of creativity. Fourth, managers should strive to create an environment that is beneficial for the reinforcement of individual self-management capabilities. Fifth, managers should be able to develop decision-making processes to develop potential creativity and encourage creative thinking, opinions, or solutions. Sixth, managers should promote the dissemination and integration of new knowledge based on the creative views and attitudes of team members.

• Journal of the Korean Chemical Society
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• v.27 no.3
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• pp.194-200
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• 1983

Effect of metallic salts added to the ${\alpha}-Fe_2O_3-HCl\;or\;{\alpha}-Fe_2O_3-H_2SO_4$ reaction systems were investigated by colorimetric and gravimetric determinations. While reductive salts exhibited remarkably enhanced reaction rate, non-reductive salts showed inhibitive results. We supposed that the improvement of dissolution rate of ${\alpha}-Fe_2O_3$ by the addition of $FeCl_2$, a reductive salt, to the ${\alpha}-Fe_2O_3-HCl$ system can be attributed to the formation of chloro-bridge between $Fe^{3+}\;and\; Fe^{2+}$, and therefore some partial electronic charge transfer from $Fe^{2+}\;to\;Fe^{3+}$ on the surface of ${\alpha}-Fe_2O_3$ will be easily achieved through the bridged bond. The transferred charge to the surface will reduce the positive charge of initial $Fe^{3+}$, and also result to reduce the lattice energy of that site. Assuming tothat there is a linear relationship between the lattice energy change and the change of activation energy of the reaction system, the transferred partial electronic charge to $Fe^{3+}$ of ${\alpha}-Fe_2O_3$ surface was calculated to be ca. 0.36e.