• Convergence Security Journal
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• v.5 no.4
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• pp.41-48
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• 2005

Objective of this study is to design and implement security system based on intrusion tolerance technology for the improvement of dependability in defense system. In order to do so, I identify and extract core technologies through the research and analysis into characteristics, structures, main functions, and technologies of intrusion tolerance architecture. And I accomplish a design of security system through the redundant system based on these core technologies. To implement and verify intrusion tolerance system, I chose 'wargame system' as a subjected system, and accomplished 'Wargame Intrusion Tolerance System' and verified security required functions through a performance test. By applying showed security system into the development of application software based on intrusion tolerance, systematic and efficient system could be developed. Also applying 'WITDS' can solve the current security problems, and this will be basic model for design of security architecture in the federation system after.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.10 no.2
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• pp.244-251
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• 1999

Self-injurious behavior is often showed in mental retardation, especially in autism. Self-injurious behavior has been regarded as a symptom cluster rather than a disease but it is an emergent clinical situation that can directly affect mortality. This case is about a refractory autistic patient who showed a self-injurious behavior of hitting the head repetitively. He was hospitalized and was treated by pharmacotherapy and behavior therapy and for this reason this clinical experience is reported with literature review. The patient is a 7-year old boy who was ward admitted from 1999 April 20 till July 10 into OO hospital OO ward because of self-injurious behavior. During the 12 weeks he had admission treatment. As for the pharmacotherapy, haloperidol was dosed up from 0.5mg to 1.0mg from the 4th week and combination drug therapy was done during the admission with naltrexone 25-50mg. As for the behavioral therapy, Differential Reinforcement of Other behavior was used and regular play therapy was done. To remove the physical restraint, headgear and hard sleeve was used. Currently, OPD follow up treatment is being done and haloperidol 0.5mg and naltrexone 50mg is maintained. The patient’s mother is educated and play therapy is done an hour daily at home. When the patient was released form the hospital, self-injurious behavior was decreased more than the moderate state and remission state is still being maintained at the outpatient clinic.

• The Journal of Society for e-Business Studies
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• v.18 no.1
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• pp.33-55
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• 2013

Information sharing behavior in the Internet has raised much interest. Recently, social network sites provide a new information sharing channel for the users who want to connect with others based on common social background or tastes. Especially, we focus that a social network site becomes one of major routes for information sharing about socially influential issues. Therefore, studying how information is diffused via a social network site may give theoretically, practically significant implication. Based on the assertion, we investigated user's behavior to mediate other user's information messages. We define information mediating behavior as concurrent actions of filtering and distributing behavior of the digital content that is originated from one of the connected users. In this study, we intended to understand the effects of information mediating behavior, and tried to understand characteristics of re-mediating of previously mediated information. Using an agent-based simulation model, we found that information mediating behavior increased the extent of information diffusion significantly. In addition, even a small degree of mediating probability could boost up the level of information diffusion in the case of a re-mediating condition. We believe that those findings provide remarkable insight of research and business application on both of information sharing and diffusion in a social network site.

• The Korean Journal of Financial Management
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• v.27 no.1
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• pp.89-120
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• 2010

In this paper, we analyse empirically the relations between ownership structure and cash holdings of firms listed on Korea Securities Market and Kosdaq Market of Korea Exchange. The main results of this study can be summarized as follows. Cash holdings increase as large shareholder's equity holdings increase. Cash holdings increase as the difference between first largest shareholder's and second largest shareholder's equity holdings increase, and cash holdings increase as the ownership concentration increase. Managerial ownership exert a non-linear effects on cash holdings. So to speak, at lower level of managerial ownership, managers hold more cash to pursue their own interests at the expense of minority shareholders, but at higher level of managerial ownership, the interests of managers and shareholders are aligned, and also at highest level of managerial ownership, managers hold more cash to pursue their own interests at the expense of minority shareholders. Cash holdings increase larger in owner-controlled firm than in management-controlled firm. These results support the expropriation of minority shareholders hypothesis that large shareholders can extract private benefits from corporate resources under their control at the expense of minority shareholders. This paper contributes to defining information value of large shareholder's equity holdings on cash holdings for a firms' other stakeholders such as investors and creditors, and to strengthening a legal and institutional safeguard for external minority shareholders. Ownership concentration might have negatively affected the evolution of the legal and institutional frameworks for corporate governance and the manner in which economic activity is conducted. It could be a formidable barrier to future policy reform.

• Journal of the Economic Geographical Society of Korea
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• v.13 no.1
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• pp.1-18
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• 2010

This paper examines characteristics of producer service networks by comparing the Capital region with Gyeongsang region in Korea and provides implications for regional policies of producer services. We employ the data of the Korea Innovation Survey, compiled by Science & Technology Policy Institute in 2006 and analyze producer service networks in the two regions. According to the results of production networks analysis, producer service firms in Gyeongsang region serve to relatively limited areas of market whereas those in the Capital region serve to a larger market. No difference is found between producer service firms in the Capital region and those in Gyeongsang region for the types of major customers. Analysis of knowledge/information networks demonstrates that firms in the Capital region mostly count on informal networks while those in Gyeongsang region primarily rely on their suppliers as a source of key information. Firms in Gyeongsand region often gain key information from the Capital region. The results of Social Network Analysis show that both of the innovation networks for two regions are poorly connected. In order to promote producer services, each region needs strategic approach reflecting regional characteristics and demands of regional industries.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.5
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• pp.871-883
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• 2014

New types of attacks that mainly compromise the public, portal and financial websites for the purpose of economic profit or national confusion are being emerged and evolved. In addition, in case of 'drive by download' attack, if a host just visits the compromised websites, then the host is infected by a malware. Website falsification detection system is one of the most powerful solutions to cope with such cyber threats that try to attack the websites. Many domestic CERTs including NCSC (National Cyber Security Center) that carry out security monitoring and response service deploy it into the target organizations. However, the existing techniques for the website falsification detection system have practical problems in that their time complexity is high and the detection accuracy is not high. In this paper, we propose website falsification detection system based on image and code analysis for improving the performance of the security monitoring and response service in CERTs. The proposed system focuses on improvement of the accuracy as well as the rapidity in detecting falsification of the target websites.

• Journal of KIISE:Software and Applications
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• v.29 no.9
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• pp.605-618
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• 2002

The CBD (Component Based Development) is a requisite technique for the Time-To-Market, and a highly reusable component should be provided to develop a variety of domain applications with the use of components. To increase the reusability of components, they should be developed by analyzing requirements of many different kinds of domains. However, to analyze requirements of a variety of domains related to the components to be developed and to include them inside the components will give burden to developers. Also, providing only general components that have common facilities for the several domains is not easy to accomplish the time-to-market since there are other domains that the developers have to develop. As such, developing common component through the analysis of several domains at the time of the CD (Component Development) does not always guarantee high reusability of the component, but gives burden to developers to develop another development since such components have common functions. Considering this, this paper proposes the component customization technique to reuse common components as well as special components. The reusability of the component can be increased by providing changeability of the attribute, behavior and message flow of the component. This customization technique can change the message flow to integrate developed components or to provide new functions within the component. Also, provides a technique to replace the class existing within the component with other class or to exchange the integrated component with the component having a different function so that requirements from a variety of domains may be satisfied. As such, this technique can accept the requirements of several domains. As such, this customization technique is not only the component with a common function, but it also secures reusability components in the special domain.

• Journal of the Korean association of regional geographers
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• v.21 no.1
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• pp.176-191
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• 2015

Military Geography is a literature studying the application of geographical elements to military behaviour. The elements of military geography including topography greatly influences on building military art and theory. The military art applied on korean pennisula from the period of ancient three countries(Koguryeo, Shilla, Paekche) has been developed maintaining consistent stream reflecting topographic features. Despite the close relationship between building of military art and military geography's elements, the study for korean military geography has been depressed and the discourses of literature has been insufficient. But, in the western study of military geography, the study vitalization efforts studying military peace keeping and humanitarism activity are ongoing. Based on the current trend of western study and the analysis of existing korean study, this treatise proposes three plans to improve the study and education of korean military geography. The key contents of plans are comprised with the improvement of education curriculum, the construction of council between relevant organism, and the installation of subdivision in relevant geographical society. The possibility shaping up the identity of korean military geography as a common literature can be increased by enhancing the study toward peace and humanitarism and specifying the method for development as noted on this study.

• The Journal of the Korea Contents Association
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• v.17 no.9
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• pp.563-574
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• 2017

The predominant concerns of the study consist of: (1) the direct effects of social work students' evaluation toward connivers of exam-cheating on their evaluation toward connivers of corruptio ns in social welfare organizations; (2) the dual mediation effects of their concerning dysfunction of whistle-blowing and needing of protection arrangement for whistle-blowers. The notable findi ngs are as follows: First, the evaluation toward a person conniving at exam-cheating significantl y has an effect on the evaluation toward connivers committing corruptions in social welfare orga nizations($.211^{***}$). Second, the more positive evaluation for connivers of exam-cheating, the more concerning dysfunction of whistle-blowing, the less needing protection arrangement for whistle-blowers($-.191^{^{\prime}***}$). The students, concerning dysfunction of whistle-blowing more, show less neg ative evaluation toward a person, conniving at corruption in social welfare organizations($.245^{***}$). The more needing protection arrangement for whistle-blowers, the less positive evaluation regar ding whistle-blowers in the organizations($-.122^{***}$). Lastly, both mediating effects of the needing protection arrangement for whistle-blowers and concerning about dysfunction of whistle-blowing are significant so dual mediator are proved. Some practical implications are discussed based on the study's findings.

• The Journal of the Korea Contents Association
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• v.17 no.9
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• pp.39-49
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• 2017

This was a qualitative study on medical aid patients to understand the cause and process of statistical difference of health service utilization between medical aid and health insurance patients. The main results were the following; 1) There was few overuse of health service in medical aid patients. The reason of heavy utilization was mainly due to the complicated disease. Some of them were considered to overuse physical therapy and oriental acupuncture. 2) In case of medical aid patients, medical cost was paid by their welfare benefit of government or by the support of family or neighbors. They usually could not adequately use the services of uninsured benefit or large hospitals due to the cost. Some patients just endured the pain. There was still discrimination for medical aid patients in some medical institutions. 3) The health officials and institutions did not provide sufficient information to medical aid patients about the policy of medical cost support. 4) Health policies, such as selective clinic system, medial aid case management, approval of extended care, were considered to contribute in preventing unnecessary use of health service. However, this might limit adequate use of medical aid service. In conclusion, there is little evidence of overuse of health service for medical aid patients, which is different from the previous studies. A new plan is necessary, because medical aid patients thought that the necessary health service was not accessible to them.