• Journal of the Korea Society for Simulation
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• v.22 no.3
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• pp.71-79
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• 2013

Web server cluster systems are widely used, where a large number of PC level servers are interconnected via network. This paper focuses on forecasting an appropriate number of web servers which can serve four different classes of user requests, simple web page viewing, knowledge query, motion picture viewing and motion picture uploading. Two ways of serving different classes of web service requests are considered, commonly used web servers and service dedicated web servers. Computer simulation experiments are performed in order to find a good way of allocating web servers among different classes of web service requests, maintaining certain levels of resource utilization and response time.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.41 no.2
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• pp.9-15
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• 2018

This study is intended to investigate that it is possible to analyze the public awareness and satisfaction of the weather forecast service provided by the Korea Meteorological Administration (KMA) through social media data as a way to overcome limitations of the questionnaire-based survey in the previous research. Sentiment analysis and association rule mining were used for Twitter data containing opinions about the weather forecast service. As a result of sentiment analysis, the frequency of negative opinions was very high, about 75%, relative to positive opinions because of the nature of public services. The detailed analysis shows that a large portion of users are dissatisfied with precipitation forecast and that it is needed to analyze the two kinds of error types of the precipitation forecast, namely, 'False alarm' and 'Miss' in more detail. Therefore, association rule mining was performed on negative tweets for each of these error types. As a result, it was found that a considerable number of complaints occurred when preventive actions were useless because the forecast predicting rain had a 'False alarm' error. In addition, this study found that people's dissatisfaction increased when they experienced inconveniences due to either unpredictable high winds and heavy rains in summer or severe cold in winter, which were missed by weather forecast. This study suggests that the analysis of social media data can provide detailed information about forecast users' opinion in almost real time, which is impossible through survey or interview.

• Journal of the Korean housing association
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• v.18 no.5
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• pp.53-64
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• 2007

In recent, the concept of management is emphasizing the aspects of social welfare, especially in permanent rental housing that most of the residents are very low income households. Although the quality of service for the residents of permanent rental housing was improved comparatively, it still needs to continually change in response to the needs of residents. To figure out the better way of supporting the service for the residents of permanent rental housing, this study examined the role and function of management office and compared perception on management services between management staffs and residents of permanent rental housing. Based on the in-depth interview with 5 managers of permanent rental housing, two types of survey questionnaire (residents/staffs of management office) were developed for the research purpose. A sample of 89 management office staffs and 111 residents were used for the data analysis. Most of the respondents recognized the need of a cooperation system among management office, social welfare center, and residents for providing better management system and welfare service.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.05a
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• pp.35-39
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• 2005

There can be two definitions of modern ideal medical surroundings. One is medical services satisfied patients' with their desire and the other is places suited to remedy realized by rational operation. Particularly, in case of dental service, there is a need for an effective regard of moving lines and there are many rooms for a dental service belonged to a curer and not a curer. So a design has been developed by many concerns. How do we proffer more familiar and comfortable places to both a curer and not a curer. Nowadays, the design is making progress to the unprecedented and up-to-date direction. I would suggest a general plan used by a nature of an original art for this design. The design used by a nature between human beings and things is able to induce comforts and intimacies. So to speak, I would like to remove artificial design and keep up organic lines, shapes and forms of a nature like it is. This study grasps the organizational limitation of this design and the visual characteristic of organic forms used by harmonious image of a nature and a new way is applied to limited medical places, a dental service, based on the study. Also, I'm go to examine the meaning and worth of a new design and suggest the direction of it.

• Journal of Information Technology Services
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• v.9 no.2
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• pp.73-92
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• 2010

E-government refers to the delivery of government information and services online through the Internet or other digital means. Unlike traditional structures, e-government systems are two-way, and available 24 hours a day, seven days a week. The interactive aspects of e-government allow both citizens and bureaucrats to send and receive information. Criticism about the provision of e-Government services, however, has proposed a more user-oriented approach. The user needs to be placed at the center of the development and the provision of e-Government services. Furthermore, e-government literatures seldom explore acceptance issues among the aged. Attempting to address this gap, we take the approach based on a combination of Technology Acceptance Model and Theory of Planned Behavior, with data gathered via a questionnaire from service users over 50 years and older. The findings indicate that perceived usefulness, ease of use, subjective norms, trust, visibility, facilitating conditions and political efficacy are direct or indirect predictors of citizens‘ intention to use an e-government service. Implications of this study for research and practice are presented.

• The Korean Journal of Health Service Management
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• v.14 no.2
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• pp.41-54
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• 2020

Objectives: The purpose of this study was to identify the influences of nursing professionalism and emotional intelligence on the clinical performance ability of nursing students. Methods: The subjects of this study included 234 nursing students from three universities located in two regions of South Korea. Data were collected from June 15 to 30, 2018 by using self-reported questionnaires. The data were analyzed using descriptive statistics, independent t-test, one-way ANOVA, Pearson's correlation coefficients, and stepwise multiple regression analysis using the IBM SPSS 21.0 program. Results: The factors which influenced the clinical performance ability in nursing students were self-concept of the profession(β=.28, p<.001), roles of nursing service (β=.22, p<.001), use of emotion (β=.22, p<.001), self-emotional appraisal (β=.18, p=.002), regulation of emotion (β=.16, p=.004), and grade (β=.16, p=.002) which explained 51.7% of the variance. Conclusions: These results suggest that to improve clinical performance ability in nursing students, an intervention that enhances their nursing professionalism and emotional intelligence should be considered.

• Journal of the Korea Safety Management & Science
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• v.10 no.2
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• pp.225-235
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• 2008

It is expected that the change of industrial structure of Knowledge based economy, and service based economy would affect on economic life of physically-challenged person with no exceptions. There have been some former studies which have been misunderstood the employment of disabled due to the declining employment of the disabled and prejudice to the disabled based on biased perspective and public opinion. This study have analyzed the employment conditions of the ordinary workers and disabled workers out of those prejudices and biased opinions. Wage, economic activity ratio, age, educational background and industry those 5 parameters are brought for analyzing the two comparison group. Each parameter have compared based on the statistical data of ordinary workers and disabled workers for past 7 years. Weight between each parameter have been drawn by collecting the experts' opinion using AHP(Analytic Hierarchy Process), and utility of employment of two comparison groups have been estimated through progress inclination of each parameter. Through the estimated outcome, present condition and controversial issues and way of improvement of domestic employment of ordinary workers and the disabled is mentioned.

• Journal of Information Technology Applications and Management
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• v.19 no.2
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• pp.97-116
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• 2012

Since 2008 when IPTV service entered the broadcasting market, the competition among interactive broadcasting media has been growing more and more fierce. To make a market strategy under the harsh competition, this study tried to make an IPTV customer segmentation based on the characteristics of interactive broadcasting media. From previous literature, this study drew five characteristics of interactive broadcasting media : ease of use, two-way communications, active control, variety of content, and economic efficiency. Two-step clustering based on these characteristics identified four customer segments. There were statistically significant differences in the five characteristics among the customer segments. This study profiled the customer segments and proposed competitive strategies for each customer segment.

• Journal of Families and Better Life
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• v.15 no.3
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• pp.59-72
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• 1997

The purpose of this study is to investigate housewife's housework time and the expenditure for time-saving goods and service at the lifecycle stage and to identify the relationship between demographic characteristics and these two variables. The data is collected by using questionnare distributed to 412 housewives living in Seoul and around new two cities. The data is analyzed using Mean Frequency Percentile One-way ANOVA Pearson's Correlation and Regression,l The result of this research is as follows; 1. Housewife's housework time has significant relationship with the lifecycle stages (p<0.01) And the most influencial factor to it is housewife's employment and the next are domestic helper monthly household income and housewofe's age(p<0.01) 2. The expenditure for time-saving has most significiantly related to the lifecycle stages. And the other influencial factors to it are houswife's employment monthly household income and housewife's age(p<0.001) The explanatory power of al variables is 36%.

• Proceedings of the Safety Management and Science Conference
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• 2008.11a
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• pp.405-419
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• 2008

It is expected that the change of industrial structure of Knowledge based economy, and service based economy would affect on economic life of physically-challenged person with no exceptions. There have been some former studies which have been misunderstood the employment of disabled due to the declining employment of the disabled and prejudice to the disabled based on biased perspective and public opinion. This study have analyzed the employment conditions of the ordinary workers and disabled workers out of those prejudices and biased opinions. Wage, economic activity ratio, age, educational background and industry those 5 parameters are brought for analyzing the two comparison group. Each parameter have compared based on the statistical data of ordinary workers and disabled workers for past 7 years. Weight between each parameter have been drawn by collecting the experts' opinion using AHP(Analytic Hierarchy Process), and utility of employment of two comparison groups have been estimated through progress inclination of each parameter. Through the estimated outcome, present condition and controversial issues and way of improvement of domestic employment of ordinary workers and the disabled is mentioned.