• Journal of Communications and Networks
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• 제18권1호
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• pp.105-111
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• 2016

Trust models in the literature of MANETs commonly assume that packets have different security requirements. Before a node forwards a packet, if the recipient's trust level does not meet the packet's requirement level, then the recipient must perform certain security association procedures, such as re-authentication. We present in this paper an analysis of the epidemic broadcast delay in such context. The network, mobility and trust models presented in this paper are quite generic and allow us to obtain the delay component induced only by the security associations along a path. Numerical results obtained by simulations also confirm the accuracy of the analysis. In particular, we can observe from both simulation's and analysis results that, for large and sparsely connected networks, the delay caused by security associations is very small compared to the total delay of a packet. This also means that parameters like network density and nodes' velocity, rather than any trust model parameter, have more impact on the overall delay.

• 시큐리티연구
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• 제6호
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• pp.147-165
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• 2003

Since Electronic Security System is introduced in Korea in 1981 by foreign technology, Security market has been increasing considerably during short period, and It performs it's security roles well in place of security guards. As electronic and communication technology is highly developed, Electronic Security System and security market structure is changing naturally. Especially high-tech mobile communication technology will change the method of Electronic Security business. Also the pattens of residence and life style, such as the trend toward nuclear family and single life could effect security market. In recent year, new business models that apply the mobile phone and internet is appeared. Although Electronic Security System is changed by the changes of technology, It is very difficult to change the basic elements, such as sensing, alarm signal transfering, and response. The rate of increase of Electronic Security market is expected to matain it's increase pace for the time being. But the development of new system for new protectes such as childeren, old person, vehicle rather than immovable facility is necessary to prepare for the continuous competition.

• 시큐리티연구
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• 제6호
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• pp.167-193
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• 2003

Korean social structure is changing by leaps and bounds caused by industrialization, urbanization and information. Because of this, the sense of value, and moral consciousness of Korean people have been edteriorating and all kinds of social evils have been increasing also. However, the police who ought to be in charge of public well-being, security, social order are not playing their role on account of bad working conditions, and lack of budget. For this reason, individuals are desirous of preserving their security and lives at their cost. Private security has emerged at this background.

• 시큐리티연구
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• 제5호
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• pp.381-392
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• 2002

• 시큐리티연구
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• 제8호
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• pp.337-360
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• 2004

• 시큐리티연구
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• 제7호
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• pp.433-461
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• 2004

• 시큐리티연구
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• 제8호
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• pp.85-106
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• 2004

• 시큐리티연구
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• 제5호
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• pp.89-108
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• 2002

The prospect of security services industries is as followings. First, integrated security system will be increased in the security service sphere of collective housing such as apartments. Second, the needs to security services with high-tech electronic security system and systematic security service against crimes will be increased. Third, the needs to crime prevention and disaster prevention service including information security service by means of internet and information and communication technology will be increased. Fourth, perhaps domestic market of security service will be reshaped in relation with localization trend and entrance of foreign security service companies to our country. With these conclusions I think that the departments of universities related to security services will focus on their social roles.

• 시큐리티연구
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• 제2호
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• pp.33-60
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• 1999

I Study on the security measures of the World Cup Korea and Japan jointly in 2002. The paper, purporting to consider security counterplans, comprise five chapters. Chapter I which sets out purpose, scope and method, is followed by chapter II, dealing largely with the legislations and importance on the security measures of the 17th FIFA World Cup in 2002. Chapter III concerns the security environment -internal environment, external environment- and the highlights accidents and events of history on the FIFA World Cup. Chapter IV consider security measures of the World Cup Korea in 2002. It is followed by concluding observation made in chapter V. To be operated security systems effectively, these need to be regulated according to a security measures organizations, security facilities and equipments, security plan and protective force, security operations and so forth.

• 시큐리티연구
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• 제8호
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• pp.127-153
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• 2004

On Study is to presidential security service in Korea and U.S Secret Service. U.S Secret Service give emphasis a right of a people. This become the center of attention that Special Agent enforced comprehensive authority with Law enforcement, intelligence, security. Presidential security service in Korea emphasis a threat of North Korea in the past. but recent circumstances changed a threat of terrorism based Islamic Fundamentalism and emphasis a right of a people. You can't overemphasize the value of this point.