• Journal of Cadastre & Land InformatiX
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• v.49 no.1
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• pp.5-15
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• 2019

This study is to review methodological limitations of previous studies, propose Tobit Model as an analysis model. We model used annual rent-free as dependent variable and considering to contract characteristics and building characteristics as independent variable. We model was consisted to the three model as follow: Basic model, Time control model, Quadratic model. As a result of the analysis, existing variables revealed through previous studies such as contract period, contract area, total floor area, and building age were all statistically significant. These results were robust when considering time effects. Also, floor area and annual rent-free was quadratic relationship by inverse U shape. This result provide to methodological contribution for related research. Also, provide to more accurate information for participants in seoul office market.

• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.671-674
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• 2005

The series parasitic resistances ($R_s$, $R_g$, $R_d$, $R_{sub}$) of BSIM3v3 RF MOSFET macro model were directly extracted from measured S-parameters in the GHz region by using simple 2-port parameter equations. Also, overlap capacitance and junction capacitance parameters were extracted by tuning $S_{11}$, $S_{12}$, and $S_{22}$ respectively while DC-parameters and all parasitic resistances are fixed at previously extracted values. These data are verified to be accurate by observing good correspondence between modeled and measured S-parameters up to 10GHz.

• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.675-678
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• 2005

An improved BSIM3v3 RF Macro model with RC parallel substrate circuit has been developed to simulate RF characteristics of the output admittance in MOSFET accurately. This improved model shows better agreements with measured $Y_{22}-parameter$ up to 10 GHz than conventional one with a single substrate resistance, verifying the accuracy of the improved one.

• Journal of the Korean Home Economics Association
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• v.43 no.4 s.206
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• pp.79-95
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• 2005

The Purpose of this study was to develop a comprehensive and integrated child-care services model for children both with and without disabilities. The comprehensive perspective included several dimensions such as education, child welfare, family welfare, and community welfare. Survey research based on theories and models regarding the integrated child-care services was carried out to determine the overall needs of child-care institutions, parents, and community members. The results revealed the need for development in the following three areas: (1) edu-care curriculums for integrated programs, (2) programs for supporting family members who have disabilities children, and (3) improved community members' perception about integrated child-care services. A model was developed for fulfil these identified needs.

• Korean Journal of Child Studies
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• v.32 no.3
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• pp.91-105
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• 2011

The purpose of this study was to investigate the relationship between sexual development, sensation seeking traits, exposure to pornographic media, peer conformity, and potential delinquency on the part of Korean middle school students. In order to verify the model, we used structural equation model (SEM) analysis. 603 adolescents were participated in the study. The results were as follows; first, both male and female models goodness of fit and significant paths was proven. Second, it was also found that gender difference existed in the model. The implications of this study and the suggestions for future research were also discussed.

• 한국경영정보학회:학술대회논문집
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• 2007.06a
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• pp.395-400
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• 2007

Previous studies present the mixed results on online reputation mechanism. In this study, we have found that an approach based on Bayesian statistics can explain most results of previous studies which are conflicting with each others. With this model, we explain why negative ratings have more significant marginal impacts on sellers' reputation than positive ones do. Furthermore, we even show why the feedbacks with a few negative ratings may increase the value of the item and final prices by confirming buyers' prior beliefs on the sellers' reputation much more than those without negative ratings. Also, we explain why there are not many negative ratings. Even though some studies suggest this because of generosity of users, our model shows that the reason is that the existence of FS itself prevents bad sellers from participating to the market as a signal itself. Even further, we show how this extreme tendency of positive ratings gets even stronger as markets evolve. Finally, to validate our analytical results, we examine the previous studies and see what factors effect the outcomes of their analyses.

• Proceedings of the Korean Statistical Society Conference
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• 2000.11a
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• pp.5-12
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• 2000

Meta-analysis refers to quantitative methods for combining results from independent studies in order to draw overall conclusions. We consider hierarchical models including selection models under a skewed heavy tailed error distribution and it is shown to be useful in such Bayesian meta-analysis. A general class of skewed elliptical distribution is reviewed and developed. These rich class of models combine the information of independent studies, allowing investigation of variability both between and within studies, and weight function. Here we investigate sensitivity of results to unobserved studies by considering a hierarchical selection model and use Markov chain Monte Carlo methods to develop inference for the parameters of interest.

• Journal of Information Science Theory and Practice
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• v.1 no.4
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• pp.38-47
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• 2013

The proliferation of digital libraries (DL) in the twenty-first century has revolutionized the way information is generated and disseminated. This has led to various practical and research models of DLs. This paper discusses the concept and development of digital libraries, and examines various components and characteristics of DLs. It further identifies various models and theories of digital libraries with a special focus on the DELOS Reference Model and 5S Theory. The relationship between the two focused frameworks is analyzed for better understanding of their application in the DL universe.

• Korean Journal of Child Studies
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• v.26 no.1
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• pp.261-278
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• 2005

The purpose of this study was to demonstrate the paths among the risk-protective factors that related to the resilience based on the Challenge Model. The subjects for this study were 209 children from divorced families in the 4th, 5th, and 6th grades of elementary schools in Seoul and Gyunggi-do. As the results, there were 28 paths which affected the resilience of children from divorced families based on the Challenge Model. The protective factors were easy temperament, problem-focused coping style, parental support, peer's support, higher socio-economic status, experiences in therapy, presence of siblings, contact with adult caretakers. The risk factors were higher grade, emotion-focused coping style, and children's gender, especially girls. This result demonstrated that each risk and protective factor not only affected resilience separately but interacted with one another.

• Management & Information Systems Review
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• v.3
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• pp.353-398
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• 1999

In the more than one decade, studies of organizational citizenship behavior(OCB) have increased continuously, research on the role of job satisfaction and organizational commitment upon the relationships between OCB and Job characteristics, however, is very scarce. This study analyzed comprehensively existing studies of OCB, designed a model of mediating role of behavioral performance(job satisfaction, organizational commitment), and generated three hypotheses inherent in the model. To design the model and generate the hypotheses, this study conducted a comprehensive literature survey on OCB. To test the hypotheses, this study collected data from 847 employees at 12 large general hospitals in Pusan area through a questionnaire survey and conducted the three step mediated regression analysis using the SAS-PC Package. Conclusively, job characteristics tend to be the most influential antecedents affecting not only through mediating factors but also directing to OCB. These and other major findings from this study imply that existing American studies may be applicable the Korean organizations and that this study may complement the deficiencies of the existing studies.