• Korean Management Science Review
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• v.33 no.2
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• pp.29-47
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• 2016

Trust is formed from the day-to-day and persistent interaction relationship. The trust demands more and more at the age of uncertainty. Human beings are using media interaction. The area of communication with media is extended to virtual space. The purpose of this study is to qualitatively explain trust building process in virtual team by media using. In the pursuit of this purpose, we executed in-depth interview with the person who have experience communicating by media with a man of a complete stranger. They experienced the trust building process. Interview data were analyzed by a Structured Coding Techniques. The derived seven categories were reconstructed in consideration of the cause-and-effect relationship and the flow of events. We have discovered a new trust model that was the result from communication by a media using. The model presented is very useful to Individuals who need a new trust building relationship with stranger or virtual team member.

• Communications for Statistical Applications and Methods
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• v.19 no.2
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• pp.293-301
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• 2012

Quantile regression proposed by Koenker and Bassett (1978) is a statistical technique that estimates conditional quantiles. The advantage of using quantile regression is the robustness in response to large outliers compared to ordinary least squares(OLS) regression. A regression tree approach has been applied to OLS problems to fit flexible models. Loh (2002) proposed the GUIDE algorithm that has a negligible selection bias and relatively low computational cost. Quantile regression can be regarded as an analogue of OLS, therefore it can also be applied to GUIDE regression tree method. Chaudhuri and Loh (2002) proposed a nonparametric quantile regression method that blends key features of piecewise polynomial quantile regression and tree-structured regression based on adaptive recursive partitioning. Lee and Lee (2006) investigated wage determinants in the Korean labor market using the Korean Labor and Income Panel Study(KLIPS). Following Lee and Lee, we fit three kinds of quantile regression tree models to KLIPS data with respect to the quantiles, 0.05, 0.2, 0.5, 0.8, and 0.95. Among the three models, multiple linear piecewise quantile regression model forms the shortest tree structure, while the piecewise constant quantile regression model has a deeper tree structure with more terminal nodes in general. Age, gender, marriage status, and education seem to be the determinants of the wage level throughout the quantiles; in addition, education experience appears as the important determinant of the wage level in the highly paid group.

• Journal of Korean Academy of Nursing
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• v.37 no.7
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• pp.1080-1090
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• 2007

Purpose: Although concerns of female sexual dysfunction (FSD) are increasing in Korea, sexual dysfunction related factors are limited in research studies. The aim of this study was to develop an explanatory model that will further explain the continuously increasing female sexual dysfunction cases in Korea. Methods: Survey visits were conducted to four hundred and eighty five women, over 25 years of age and presently residing in either urban or rural areas. All of them were analyzed using a structured questionnaire. A total of 8 instruments were used in this model. The analysis of data was done with both SPSS WIN for descriptive statistics and AMOS 5.0 for covariance structure analysis. Results: As a result, variables that showed notably direct effects on FSD were: sexual concept (sexual attitude), sexual distress, and psychosocial health (depression, crisis, traumatic life events). On the other hand, variables such as age, educational level, economic status, and marital status showed indirect influences on health-promoting behaviors. Conclusion: By comprehensively addressing the factors related to sexual dysfunction, and comparing each influence, this study can contribute to designing an appropriate sexual dysfunction prevention strategy in tune with the particular characteristics and problems of a client.

• Korean Journal of Ecology and Environment
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• v.45 no.2
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• pp.150-157
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• 2012

Fish communities in river networks provide significant ecosystem services that will likely decline under future land use and climate change. We developed a model that simulates the consequences to multiple populations of one or more fish species-a meta-community-from multiple stressors across a river network. The model is spatially-explicit and age-structured, with three components: habitat suitability; population dynamics, including species interactions; and movement across a spatial network. Although this model is simple, it can form the basis of fisheries assessments and may be incorporated into an integrated modeling system for watershed management and prediction.

• Journal of Families and Better Life
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• v.17 no.2
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• pp.137-156
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• 1999

The purpose of this study was to investigate couple's leisure time leisure cost and leisure satisfaction and the relations among these variables. Data for 214 couples were gathered from the structured questionnaire and time diary. The major findings of this study were as follows": (1) The amount of leisure time was very different between husbands and wives. And couples' leisure time was different according to wives' employement status,. (2) The amount of leisure cost was very different between couples and between employed wife and non-employed wife (3) Couple's leisure satisfaction was also different between couples and between employed wife and non-employed wife (4) In husbands' model leisure time had significant effect on their leisure satisfaction. On the other hand in wives' regression model different according to employment On the other hand in wives' regression model was different according to employment status. Employed wives' leisure satisfaction was significnatly rela ed to the leisure time and cost while non-employed wives' leisure satisfaction was related to leisure cost and age.

• The Journal of Society for e-Business Studies
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• v.14 no.1
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• pp.13-34
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• 2009

As ubiquitous computing technology is proliferating, a wider range of u-services applying ubiquitous computing technology has been implemented and some of the u-services have been actively considered for commercialization. Accordingly, establishing corresponding business models based on u-services also have been increased. However, structured methodologies to build u-service business models are still in its very early age. Moreover, since most of the legacy business model formulation and analysis methodologies have stressed on conventional or digital services, not u-services. Hence, the purpose of this paper is to propose a structured methodology of formulating and analyzing business models for u-services. An illustrative example is described to show the feasibility of the proposed methodology. To do so, Business Model Diagram (BMD), which adopts model components for u-services, is newly developed.

• Research in Community and Public Health Nursing
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• v.22 no.1
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• pp.22-32
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• 2011

Purpose: The purposes of this study were to examine the level of anger, anger expression, depression, psychosomatic symptom and perceived health status, and to identify the influencing factors of anger expression in shelter residents. Methods: This study employed a descriptive correlational design. Data were collected from 407 homeless people residing at 27 shelters using structured instrument. Results: The level of anger expression was different by age, educational level, existence of children, and duration of shelter residency. Anger expression was significantly correlated with depression, psychosomatic symptoms and perceived health status. The predictors of high-level anger expression was younger age, low educational level, duration of shelter residency in Model 1 (F=6.884, p<.001, Adj. $R^2=.065$, and depression and psychosomatic symptoms in Model 2 (F=7.197, p<.001, Adj. $R^2=.113$. Conclusion: This study suggested that the homeless in the shelters had various psychological vulnerabilities, and therefore more individualized programs based on their needs and psychological health status should be provided for the homeless.

• Information Systems Review
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• v.3 no.1
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• pp.83-101
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• 2001

Studies about wireless internet have been focused on technology issues and few studies were shown in the adoption of wireless internet services. This study uses Technology Acceptance Model in order to understand influencing factors in acceptance of wireless internet services. Reviewing by TAM related studies, this study regards the influencing factors as personal and social environmental dimensions in the case of wireless internet services, and these two factors are used. Two dependent variables-intention and current usage-are adopted for analyzing the effects of the two factors on two dependent variables via mediating variables. The results of this study show that age, frequency of mobile phone usage, occupation, and the recognition level of wireless internet services affected the intention and current usage of these services.

• Korean Journal of Occupational Health Nursing
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• v.19 no.2
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• pp.117-127
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• 2010

Purpose: The purpose of this study was to investigate the factors that influenced the preparation for later life of the age group of 30s, 40s, and 50s in production workers. Methods: The participants for this study were 320 men working in 2 workspaces of Ulsan city. The data was collected from May to July, 2010 using structured questionnaires. Chi-square, One way ANOVA, Duncan test, Pearson's Correlation Coefficient and multiple regression with the SPSS WIN 17.0 program were used to analyze the data. Results: There were statistically significant differences among 30s, 40s, and 50s workers regarding the preparation for later life, health promoting behavior, knowledge and attitude of cerebrocardiovascular (CVD) diseases. 50s workers were significantly more higher than 30s and 40s regarding the preparation for later life, health promoting behavior, cognition and attitude of CVD diseases. The model including variables related to the preparation for later life explained variance of 42.3% of 30s, 36.0% of 40s, and 28.5% of 50s workers. Finally, cognition of CVD diseases and social support were predictors in explaining the level of the preparation for later life among production workers. Conclusion: Based on the findings of the study, nursing interventions should be developed to improve the preparation for later life of production workers according to age differences.

• Korean Parent-Child Health Journal
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• v.16 no.1
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• pp.27-36
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• 2013

Purpose: The purpose of this study was to develop a nocturnal emission and menstruation education program using CAI for Korean elementary school children. Methods: The research design was methodological study a ISD model 4 fields into sub contents in each field of the nocturnal emission and menstruation by CD titles. And to verify the effect of the education program, performance evaluation of the educational program for structured questionnaire was conducted on 120 late school-age children on June, 2010. Results: The results of this study were as follows; Through this, developed program was proved its effectiveness in enhancing knowledge level on nocturnal emission and menstruation in late school-age children(t=14.03, p<.001, t=11.52, p<.001). Conclusion : Accordingly, this program is expected to be an educational program to be used in various educational institutes, communities, and home as well as self-study that allows children themselves to study repeatedly, choosing the contents they want, whenever they hope as an educational program on nocturnal emission and menstruation in school-age children. In addition, it is suggested that various fields of programs should develop in consideration of early sexual maturity.