• Journal of KIISE:Software and Applications
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• v.29 no.12
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• pp.966-978
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• 2002

There are two important problems in improving text classification systems based on machine learning approach. The first one, called "selection problem", is how to select a minimum number of informative documents from a given document collection. The second one, called "composition problem", is how to reorganize selected training documents so that they can fit an adopted learning method. The former problem is addressed in "active learning" algorithms, and the latter is discussed in "boosting" algorithms. This paper proposes a new learning method, called AdaBUS, which proactively solves the above problems in the context of Naive Bayes classification systems. The proposed method constructs more accurate classification hypothesis by increasing the valiance in "weak" hypotheses that determine the final classification hypothesis. Consequently, the proposed algorithm yields perturbation effect makes the boosting algorithm work properly. Through the empirical experiment using the Routers-21578 document collection, we show that the AdaBUS algorithm more significantly improves the Naive Bayes-based classification system than other conventional learning methodson system than other conventional learning methods

• The Journal of the Korea Contents Association
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• v.10 no.7
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• pp.317-325
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• 2010

This study aims to deduct the extensive improvement types of leisure activities of private security agents using PPA technique and to examine the influence of leisure constraint on the index of participation. Through this process, this study consequently will draw the priority list of investment on the policy for improving the welfare status of private security agents. In this study, judgement sampling was applied to 6 security agencies located in Seoul, 2010, and 267 cases were used in the final analysis. Collected data went through factor analysis, reliability analysis, paired t test, PPA analysis, and regression analysis by using SPSSWIN 17.0. The conclusions were drawn as follows. In regard to the reliability, Cronbach's $\alpha$ was over .768. First, there was a difference between the preference rate and the participation rate which are the participation index of the private security agents' leisure activities. concentrate here in leisure types turned out to be fitness activities, walking/jogging, tourism, a day-long travel, and keep up the cood work in leisure types are movies, domestic tourist attractions, dating, eating out, personal relationship, watching sports, reading, karaoke, TV video watching, drinking etc. low priority in leisure types are water sports, hiking, biking, soccer, photography, ball games, sky sports, playing go/janggi, inline skates, and cooking. Second, the leisure constraint affects the participation index of leisure activities. As the personal constraint, and surrounding conscious constraint which are the subordinate factors of the leisure constraint get bigger, the participation index of favored leisure activities become lower. In contrast, when the difficulties such as structural constraint, time and economical constraint are overcome, participation index of leisure activities go on the rise.

• Korean Security Journal
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• no.13
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• pp.91-112
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• 2007

The purpose of this study is to identify effect of superior leadership style in private security service on job satisfaction. The survey research tool was a questionnaire. The subjects of this study were selected from the population of private security service employee's and sampled by using convenience sampling. Data obtained from 448 athletes were used. Questionnaire was used as a tool to attain the purpose of this study, SPSS 12.0 program was used to analyze the data, and statistical tests including correlation analysis and multiple regression analysis were conducted at significance level of p<.05. The results of this study were as follows. First, the democratic behavior, affirmative feedback, training and direction and social support in leadership style have a significant effect on a satisfaction of relation with supervisor. Second, the democratic behavior, affirmative feedback and training and direction in leadership style have a significant effect on a satisfaction of relation with coworkers. Third, the democratic behavior, affirmative feedback and training and direction in leadership style have a significant effect on a satisfaction of work. Fourth, the democratic behavior and authoritative behavior in leadership style have a significant effect on a satisfaction of pay. Finally, the democratic behavior, affirmative feedback and training and direction in leadership style have a significant effect on a satisfaction of promotion opportunity.

• The Journal of the Korea Contents Association
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• v.17 no.10
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• pp.19-29
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• 2017

Purpose : To describe and understand the experience of QI (quality improvement) nurses related to the hospital QI activities in public general hospitals. Methods : Purposive sampling was conducted 10 QI nurses and who have QI work experience for more than 1 year. Data were collected through focus group interviews. Interviews were recorded, transcribed and analyzed with qualitative content analysis using Strauss and Corbin's methodology. Results : The core categories of experience with QI activities were 'the success and failure of the medical care and overall health service sector', 'the degree of activation of current QI activities', 'characteristics of public hospital QI activities', 'what is needed to activate future QI activities'. The key themes were derived as follows. 'Success of quality enhancement activities according to the characteristic of public hospitals', 'activation of public hospital QI activities through leadership and QI education', 'reorganizing the role of regional hospitals in public hospitals'. Conclusion : Physician participation is important in the success of QI activities in public hospital practice. To lead these physician participation, Sharing doctor's QI experience and providing the necessary knowledge in QI activities and helping their leadership in QI activities are needed. QI nurses at public hospitals should lead QI activities to improve national hospitals' care quality through cooperating with local hospitals.

• Health Policy and Management
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• v.9 no.3
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• pp.1-20
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• 1999

This study reviews the literature of influencing factor on hospital-employed physician's income, and it describes general distribution of hospital-employed physician's income, and analyzes influencing factor of hospital-employed physician's income. A total of 1.795 persons responded to the mail survey. through stratified sampling by 23 branches of medical society in Korean RBRVS study. The design of the study is cross sectional study. and the unit of analysis is a physician. To examine the change of average income per month. multiple regression was used to test the change according to physician's characteristics. demographic characteristics. scale of hospital. average intensity of ordinary work. and specialty. The major findings of this study are as follows; 1. As for physicians working in first referral hospital. the average income of neurosurgeon per month was the largest. being 1.34 times larger than that of the family physician, and that of the emergency physician was the smallest, being 0.78 times smaller than that of the family physician, but that of the ophthalmic and Orthopaedic physician was significantly larger than that of the family physician under the control of control variables. And average income per month was significantly larger for physicians who worked in Seoul metropolitan area than physicians who worked in rural area. 2. The year of physician's career, number of average out-patients per month significantly positively associated, but the number of hospital beds and average intensity of therapy significantly negatively associated with average income per month. 3. As for physicians working in second referral hospital. the average income of the psychiatric physician per month was the largest, being 1.33 times larger than that of the family physician, and that of the emergency physician was smallest, being 0.74 times smaller than that of the family physician., but no significant difference was seen under the control of control variables, and average income per month was significantly larger for physicians who worked in Seoul metropolitan area than physicians who worked in large municipal area. 4. The year of physician's career and number of hospital beds significantly positively associated, but average working hours per month significantly negatively associated with average income per month. In conclusion, the year of hospital-employed physician's career is the largest influencing factor on hospital-employed physicians. But the difference of average income per month according to working regions and to number of hospital beds existed in employed physicians under the control of control variables. So this study has implementation that we must consider the influence of working regions and the number of hospital beds on the income of hospital-employed physicians in making policy for hospital. Being a cross-sectional study, this study can not suggest causal explanations. In the future, experiment or cohort study is needed for causal explanations.

• The Journal of the Korea Contents Association
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• v.8 no.3
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• pp.225-233
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• 2008

The purpose of this study is to investigate the relationship between leisure motives of private guards and their sports participation, verify the casual relationship between its variables, and finally present the need of leisure activities for them and related politic data. The subjects are the private guards who work for a private guard company in Seoul in 2007, Except the data having inadequate answers among the 200 copies which are collected by stratified cluster random sampling, the data of total 193. The result of reliability analysis check up was here below; Chronbach's ${\alpha}= .835$. SPSSWIN 15.0 program is used for the reliability and correlation analysis of the questionnaire. The followings are the conclusions from this investigation through above methods and procedures. First, leisure motives affect the experience of sports participation; the more relaxational motives are, the less the experience of sports participation is. Second, leisure motives affect the degree of sports participation; the more motives of recognizing competence are, the more the frequency of sports participation is; the more intellectual motives are, the longer the period of sports participation is; the more relaxational motives are, the less the intensity of sports participation is, while the more motives of recognizing competence are, the more the intensity of sports participation is.

• The Journal of the Korea Contents Association
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• v.14 no.8
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• pp.250-256
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• 2014

This study was carried out in order to seek social support direction by allowing them to recognize necessity of preparing for their stably old age life and by inquiring into the preparation for old age life targeting dental hygienists who work at dental clinics. It sent questionnaire by post to dental hygienists of 1,560 dental clinics, which were sampled with a stratified sampling method, and then conducted a cross-sectional study based on self-administration. As a result of a problem of being worried in old age life, the ratio with the response as saying of being 'economy' was indicated to be the highest. The ratio of financial preparation for old age was shown to be high with 84.3%. Its method was the highest in 'fixed deposit and installment savings' with 62.6%. The satisfaction with financial preparation for old age stood at averagely 2.60, thereby having shown to be dissatisfied. It was shown to be low with 2.97 in the mean score of physical preparation for old age life, 3.59 in emotional preparation, and 2.56 in preparation for leisure. In conclusion, the satisfaction with financial preparation for old age life in our country's dental hygienists was low. Even the physical, emotional, and leisure-based preparations were shown to be low. Hence, it is considered to be likely needed to be planned preparation for old age life from the 30s. Also, for this, Korean Dental Hygienists Association needs to positively develop several kinds of programs such as education, policy and system for old age life following these people's retirement.

• The Journal of the Korea Contents Association
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• v.16 no.6
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• pp.627-635
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• 2016

The purpose of this study was to investigate the communication skill of a dental hygienist for the elderly. The self-administered questionnaire selected by convenience sampling method from January 2 to February 14, 2015, Seoul, Kyungki, Incheon regions final analysis section 233 to target dental hygienist working under a dentist institutions. This study analyzed collected data by t-test, ANOVA, pearson correlation coefficient, and multiple regression. According to multiple regression analysis results can be number of worker, the main task, living experience feelings adjusted variable, as a result work in the dental hospital(B=.292 SE=.074), more like the elderly preference(B=.282, SE=.141), the behavior of the elderly(B=-.223, SE=.043) found that the more positive the impact. Therefore, the more exposure for your understanding and the elderly relationships for the the elderly appeared to affect the communication skill necessary to develop training programs that can improve the communication skill of a dental hygienist and apply to be prepared for the coming aging society.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.7
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• pp.463-473
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• 2018

This investigation was a descriptive study that examined the relationship among factors including professional autonomy, role conflict, and clinical decision-making ability of nurses on comprehensive nursing service wards. To accomplish this, a survey of 234 nurses working at D city and G city who were selected based on convenience sampling was conducted. Data were collected using a self-reported questionnaire completed by 234 nurses at four clinical hospitals from October 12, 2017 to November 30, 2017. The collected data were evaluated by t-tests, ANOVA, Pearson's correlation and stepwise multiple regression analysis. The mean clinical decision-making ability score was $3.38{\pm}0.78$, which corresponded to an intermediate level of clinical decision-making ability. Clinical decision making ability was positively correlated with professional autonomy, but role conflict showed a negative correlation. The factors having the greatest impact on clinical decision-making ability were found to be, in order, length of work, education level, professional autonomy and role conflict, which together accounted for 38.7% of the total impact. To improve clinical decision making ability, it is important to improve autonomy and role conflict. Additionally, to improve clinical decision-making ability, it is necessary to improve clinical decision-making ability to determine nurses tasks through professional autonomy and role conflict. Overall, the results of this study can be utilized as baseline data when developing a program to enhance nurses' clinical decision making ability. Moreover, it is suggested that an interventional study analyzing validity and effectiveness of developed education programs be conducted.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.10
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• pp.2945-2951
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• 2009

By observing and classifying the articles that are centering around the forecasting information which are dealing with the health related articles in the mass media such as the daily press, KBS1 9 O'clock news, and TV broadcast station's health serialization program, this research was to fulfill ultimately to present health predicted execution for the data on the present state of analysis for the general public to acquire the health related information and to practice the presented basic data of the useful health information to the patients and general public by understand the tendency of the health related information that is presented to the general public. The period of the subject for analysis conducted in a year, started in January 1st, 2006 and finished in December 31st 2006. The research sampled about 50% of the subject of analysis by using the computer's random sampling in considering the quantity of work. Look in to the subject of health information, the daily news paper illustrated in the order of the cause of diseases and dangerous factor (15.5%), the medical treatment and techniques, the medication(15.4%), and the health promotion(14.6%), and the TV news presented the subject on the cause of diseases and dangerous factor(27.5%) the most, and the least presented in the order of the mechanics(24.2%), and the administrator(11.3%).