2007, Vol.14, No.3

Informatization Policy 2023 KCI Impact Factor : 4.08

pISSN : 1598-3498
https://journal.kci.go.kr/nia

This study tries to construct a model of cyber-delinquency and test it. This study provides some explanatory factors, specifies them into motive, opportunity and control factors, and attempts to construct a model of cyber-delinquency. This study examines the effects of motive factors(eg, parental and school strains, depression, low self-esteem, fun-seeking, and association with delinquent peers) and also tests the effect of internet using time as an opportunity factor on cyber-delinquency. In addition, this study examines the effects of moderator factors and tests the interaction effects of motive and opportunity factors with control factors(eg, social bonds, perceived punishment, attitude, and self-control. Using data from 1,113 middle and high school student in Seoul, 2003, this study reveals that association with delinquent peers, fun-seeking motive, and depression have direct significant effects on cyber-delinquency and also finds that internet using time has a large effect in explaining cyber-delinquency. In addition, results show that some interaction effects of motive and opportunity factors with control factors are significant, which results support the validity of a model. The policy implications of those results are discussed.

The future network is forecast with the fact that the form where the various heterogeneous wireless networks. In this paper we build both IEEE 802.16e/WiBro and IEEE 802.11/WLAN network on the KAIST(Korea Advanced Institute of Science and Technology) campus(1,270,000m2) as well as established the vertical handover system which supported WLAN in the building and WiBro outside the building. A Mobile IP is considered for the efficient vertical mobility function in IEEE 802.16/WiBro and IEEE 802.11/WLAN environment. However, during the deployment of WiBro, only some of the ACRs(Access Control Router) can support the Mobile IP function. Therefore, WiBro network can not support the mobility function for the mobile node. In this paper, we implement an overlay-based Mobile IP function and measure the performance through a field trial. Moreover, we evaluate the possibility of commercial deployment and suggest areas that need to be improved. The average handover time between WiBro and WLAN was 2.58 seconds. As a result, the user application session maintained but real time applications were delayed during the handover time.

As the IT Architecture is enacted, the introduction of IT Architecture has processed obligatorily by the government ministries and public agencies. Therefore, it is expected for a national informationalization system to be promoted one-step higher through IT Architecture such as prevention of the overlapping development in a future information system, security of nteroperability, effective operation, and intergrated information resource management. According to this, guidebooks and supporting tools are being developed and distributed by the related institutions, and IT Architecture has been introduced or is to be introduced by the government ministries and public agencies where the necessity of it is recognized. To this end, this study inquired a research on the approach method of IT Architecture in institutions where introduced the IT Architecture recognizing its necessity and the characteristics of them, and the details are in the text as follows.