• 시큐리티연구
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• 제34호
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• pp.209-232
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• 2013

현대 사회에서 발생하는 범죄의 다양성은 시간이 흐를수록 사회적으로도 심각한 문제가 되고 있는 실정이며, 경찰의 부족한 치안공백을 보충하기 위하여 민간경비원의 역할이 증대되고 있다. 그러나 민간경비원들은 실제 업무를 수행할 때에 각종 위기상황에 노출되어 다양한 스트레스를 경험하고 있으며, 이는 민간경비의 직무소진에 영향을 미칠 수가 있기 때문에 민간경비원에 대한 철저한 관리가 이루어져야 한다. 이 연구는 민간경비원이 업무현장에서 겪게 되는 스트레스 대처에 따른 직무소진의 정도를 실증적으로 파악하기 위한 연구이다. 분석결과는 첫째, 민간경비원의 스트레스 대처방식 중 문제중심 대처는 직무소진의 신체적 심리적 소진에 부적(-) 영향을 미치고, 소망사고 대처는 정적(+) 영향을 미치는 것으로 나타났다. 둘째, 민간경비원의 스트레스 대처방식은 직무소진의 비인간화에 영향을 미치지 않는 것으로 나타났다. 셋째, 민간경비원의 스트레스 대처방식 중 문제중심 대처는 직무소진의 성취감 결여에 정적(+) 영향을 미치는 것으로 나타났다. 따라서 민간경비업무 수행과정에서 발생하는 각종의 스트레스는 민간경비원의 신체적 소진, 심리적 소진, 성취감 결여 등으로 나아갈 수가 있기 때문에 민간경비산업에 종사하는 관리자는 직무소진을 발생시킬 수 있는 다양한 요인들을 사전에 조율하여 직무소진을 감소시킬 수 있는 관리방안에 대해 집중해야 한다.

• Journal of Information Processing Systems
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• 제3권1호
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• pp.21-25
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• 2007

We propose several practical SMC protocols for privacy-preserving cooperative scientific computations. We consider two important scientific computations which involve linear equations: the linear systems of equations problem and the linear least-square problem. The protocols proposed in this paper achieve acceptable security in the sense of Du-Zhan's paradigm and t-wise collusion-resistance, and their communication complexity is O(tm), where t is a security parameter and m is the total number of participants. The complexity of our protocol is significantly better than the previous result O($m^2/{\mu}$) of [4], in which the oblivious transfer protocol is used as an important building block.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 학술대회지
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• pp.571-575
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• 2004

Having age of ubiquitous ahead, existing IPv4's address space insufficiency phenomenon appears because of increasing network usage as well as multimedia data transmission becomes much, necessity of new IP address system that guarantee QoS are needed. IPv6 was made to solve these problem. IPv6 solves address space insufficiency phenomenon offering by 128bit address space, and also offers hierarchical address layer that support improved QoS. IPv6 defines relation between surrounding node using Neighbor Discovery protocol. Used Neighbor Discovery messages, grasp surrounding node, include important informations about network. These network information outcrops can give rise in network attack and also service that use network will paralysis. Various kinds of security limitation was found in Present Neighbor Discovery protocol therefore security function to supplement tris problem was required. In this thesis, Secure Neighbor Discovery protocol that add with security function was design and embody by CGA module and SEND module.

• 전기학회논문지
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• 제59권9호
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• pp.1686-1691
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• 2010

In this paper, we aim at providing a novel sweeping method for multi-security mobile robots. The sweeping problem of the multi-robots can be modeled as the stick pulling problem in which the swarm robots should sweep unknown terrains in order to remove sticks collaboratively. For the purpose, we define a certain map, what is called stick map. And we suggest how to make swarm robots build up and utilize the map in order to improve the productivity of collaborative removing sticks. Finally, the efficiency of our algorithm is verified with simulation experiments.

• 아동학회지
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• 제20권4호
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• pp.75-89
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• 1999

Mother-Child Interactions during Problem Solving were analyzed in relation to the child's attachment security and temperament. Subjects were fifty-three 44-to 57-month-old children and their mothers. Attachment security was assessed by Attachment Q set (Waters, 1987); mother-child interactions were observed at home, and maternal ratings of child temperament were collected by questionnaire (Chun 1993). Attachment security scores were positively related to mother's cognitive assistance and positively interactions with the child and to the child's positive affect toward mother. The child's activity perceived by mother was negatively related to mother's efficient interactions and positively to the child's "reliance on mother." The child's behavior toward the mother in the task session and the child's temperament added variance above attachment in accounting for the mother's behavior.

• 한국전자거래학회지
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• 제6권2호
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• pp.159-166
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• 2001

EC(Electronic Commerce) is increasing with high speed based on the expansion of Internet. EC which is done through Internet has strong point like independence from time and space, On the contrary, it also has weak point like security problem because anybody can access easily to the system due to open network attribute of Internet. Therefore, we need the solutions that protect the security problem for safe and useful U activity, One of these solutions is the implementation of strong cipher algorithm. NPC(Non-Polynomial Complete) cipher algorithm proposed in this paper is good for the security and it overcome the limit of current 64bits cipher algorithm using 256bits key for input output and encryption key, Moreover, it is designed for the increase of calculation complexity and probability calculation by adapting more complex design for subkey generation regarded as one of important element effected to encryption.

• 한국컴퓨터정보학회논문지
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• 제8권3호
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• pp.138-143
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• 2003

정보통신과 네트워크의 발전으로 인하여 유/무선망의 통합이 일반화되어가고 있다. 이러한 시점에서 무선환경에서 데이터 통신을 위한 프로토콜로서 WAP이 사용되고 있다. 이러한 WAP에서 안전한 통신을 위하여 개발된 WTLS는 인터넷 프로토콜인 TCP/IP에서 사용되는 TLS를 무선환경에 맞도록 최적화한 것이다. 그러나 WTLS는 WAP 보안문제, 종간 문제, 소비전력 등의 문제점을 가지고 있다. 그러므로 본 논문에서는 WTLS의 단점들을 없애고자 WTLS에 사용되는 암호알고리즘을 제안하였다. 제안된 알고리즘은 단일형태가 아닌 혼합형 알고리즘을 사용하기 때문에 계산상의 복잡도를 줄여 소비전력 및 보안문제를 해결할 수 있다.

• 가정과삶의질연구
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• 제10권2호
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• pp.191-208
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• 1992

The study is focused on the perception of husbands and wives family financial security and satisfaction with quality of family life. Data was collected from the husbands and wives in Seoul. Eligibility was limited to family units with husband, wife, and at least one child. 852(Husbands:432, Wives: 420) out of 1200 respondents were finally selected as datum sources. The data was analyzed by Frequency, OneWay-ANOVA, t-test, Pearson' correlation and regression analysis. The major findings are the following: 1) In regard to the perception of family income adequacy, wives' perception was higher than husbands'. On the family financial problem, husbands had more experienced the financial problem than wives. 2) Marriage education, family income, husbands and wives education , and savings effected satisfaction with quality of family life. and husbands are more satisfaction with quality of family life than wives. 3) Determined the impact of the perception of family financial security on the satisfaction with quality of family life was 41% for wives and 33% for husbands, respectively.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 B
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• pp.701-704
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• 2003

The home network system of ubiquitous computing concept is changing present our home life as more comfortable and safe. Also, it permits that we can connect the home network system and control the appliance which is linked to the home network system without limitation in time and place. But, as other systems that use the public network like the Internet, remote control/monitoring of the home network system that use the Internet includes problems such as user's access which is not admitted and information changing. This paper presents the efficient solution about the security problem that is recognized to important problem of the home network system. Also this paper implements the security of the home network system based on the UPnP (Universal Plug and Play), adding VPN (Virtual Private Network) router that uses the IPsec to the home network system which is consisted of the ARM9 and the Embedded Linux.

• 정보보호학회논문지
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• 제9권1호
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• pp.85-102
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• 1999

본 논문에서는 ECDLP(Elliptic Curve Discrete Logarithm Problem)를 이용한 EC-SRP (Elliptic Curve - Secure Remote Password) 프로토콜을 제안한다. 타원곡선 이산대수 문제를 SRP(Secure Remote Password) 프로토콜에 적용시킴으로써 타원 곡선이 갖는 높은 효율성과 보안성을 갖도록 하였으며, 이와 동시에 타원곡선의 스칼라 곱셈(scala. multiplication)의 회수를 최대한 줄임으로써 최적의 효율성을 갖도록 설계하였다. 또한 랜덤 오라클(random, oracle) 모델에서 EC-SRP 프로토콜이 안전한 AKC(Athenticated Key Agreement with Key Confirmation)프로토콜임을 증명하였다.