• International Journal of Computer Science & Network Security
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• 제22권2호
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• pp.193-198
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• 2022

Face Detection is one of the most important aspects of image processing, it considers a time-consuming problem in real-time applications such as surveillance systems, face recognition systems, attendance system and many. At present, commodity hardware is getting more and more heterogeneity in terms of architectures such as GPU and MIC co-processors. Utilizing those co-processors along with the existing traditional CPUs gives the algorithm a better chance to make use of both architectures to achieve faster implementations. This paper presents a hybrid implementation of the face detection based on the local binary pattern (LBP) algorithm that is deployed on both traditional CPU and MIC co-processor to enhance the speed of the LBP algorithm. The experimental results show that the proposed implementation achieved improvement in speed by 3X when compared to a single architecture individually.

• International Journal of Computer Science & Network Security
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• 제22권4호
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• pp.131-138
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• 2022

A Mobile Ad-hoc Network (MANET) is a collection of moving nodes that communicate and collaborate without relying on a pre-existing infrastructure. In this type of network, nodes can freely move in any direction. Routing in this sort of network has always been problematic because of the mobility of nodes. Most existing protocols use simple routing algorithms and criteria, while another important criterion is path selection. The existing protocols should be optimized to resolve these deficiencies. 'Particle Swarm Optimization (PSO)' is an influenced method as it resembles the social behavior of a flock of birds. Genetic algorithms (GA) are search algorithms that use natural selection and genetic principles. This paper applies these optimization models to the OLSR routing protocol and compares their performances across different metrics and varying node sizes. The experimental analysis shows that the Genetic Algorithm is better compared to PSO. The comparison was carried out with the help of the simulation tool NS2, NAM (Network Animator), and xgraph, which was used to create the graphs from the trace files.

• International Journal of Computer Science & Network Security
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• 제23권1호
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• pp.120-124
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• 2023

Strong surface waves among collinearly arranged patch antenna arrays pose unwanted inter element coupling particularly when high permittivity dielectric materials are used. In order to avert those waves, a novel Defected Ground Structure (DGS) is carved out systematically between two E-plane patch antenna elements. The introduced low profile μ shaped structure consequently improves impedance bandwidth and reflection coefficient by suppressing surface waves considerably. Parametric simulation results are analyzed and discussed.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2023년도 제68차 하계학술대회논문집 31권2호
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• pp.599-600
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• 2023

본 논문은 사물인터넷 환경에서 개인 정보 보안을 강화하기 위해 개인 정보 위협과 대응방안을 조사하는 것을 목표로 한다. 개인 정보의 위협으로는 무단 액세스, 데이터 위반, 데이터 집계 및 프로파일링, 추적 및 감시가 있다. 이에 대한 대응방안으로는 암호화, 개인 정보 보호 데이터 처리, 보안 통신 프로토콜 등을 연구되고 있다. 또한, 실증적 연구를 통해 사물인터넷 사용자의 개인 정보 보호 문제와 기존 전략의 효과를 평가하고 권장 사항을 도출한다. 본 논문은 사물인터넷 생태계에서 개인 정보 보안을 강화하기 위한 정보를 제공하며, 개인정보를 활용하는 사용자에게 도움을 줄 것으로 기대한다.

• ETRI Journal
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• 제32권2호
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• pp.348-350
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• 2010

This letter presents an enhancement of EigenTrust. Using the beta distribution, local trust values can be more correctly evaluated. Simulation shows that the proposed scheme calculates the local trust more correctly by up to 8%. For personalization, the proposed scheme provides cumulative transitive values from the local trust to the global trust with mathematically guaranteed convergence.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2002년도 봄 학술발표논문집 Vol.29 No.1 (A)
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• pp.382-384
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• 2002

최근들어 security가 데이터 통신의 중요만 이슈로 떠오르고 여러 기관들의 망에 Firewall을 설치하여 보호하는 것은 점점 더 일반화 되고있다. Sun의 SKIP Firewall Traversal 방법 은 Mobile IP가 Firewall이 설치된 환경에서도 제대로 동작할 수 있도록 고안된 것이다. 그러나 이 방법은 실제 적용에 있어 몇몇 문제점이 발견된다. 본 논문에서는 이 문제점들을 살펴보고 그것을 해 결하는 방안을 제시하고자 한다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 통신소사이어티 추계학술대회논문집
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• pp.125-128
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• 2003

In this paper, we propose a dynamic key lifetime change protocol for performance enhancement of virtual private networks using IPSec. The proposed protocol changes the key lifetime according to the number of secure tunnels. The proposed protocol is implemented with Linux 2.4.18 and FreeS/WAN 1.99. The system employing our proposed protocol performs better than the original version in terms of network performance and security.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2014년도 춘계학술발표대회
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• pp.372-374
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• 2014

오늘날 사이버보안침해 위협의 증가에 따른 기업 내의 중요자료 유출을 방지할 수 있는 방안에 대한 연구의 필요성이 증대되고 있다. 본 논문에서는 비인가자의 네트워크 접속을 차단하는 네트워크 통제(NAC) 시스템과 개인 PC의 저장매체관리 시스템을 연계하여 정보보안의 핵심요소인 기밀성을 강화할 수 있는 모델을 제안하였다. 필수 SW(저장매체제어)를 설치하지 않을 경우 네트워크를 차단함으로서, 비인가자의 네트워크 차단과 동시에 중요자료 유출을 미연에 방지하여 보안을 강화할 수 있다.

• 상하수도학회지
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• 제32권2호
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• pp.193-200
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• 2018

Owing to the development in information and communications technologies have improved the technology for high-speed transmission of massive data, which has changed closed-circuit television (CCTV) video transmission technology. In particular, digitization of the CCTV video format and streaming technology has made it possible to minimize transmission loss and integrate video transmission and camera control(pan/tilt). It has also become possible to provide additional services like remote emergency warning broadcasting with just Internet Protocol (IP). However, because of the structural problems of IP, these changes have also brought about the threat of hacking of CCTV monitoring systems. In this study, we propose a methode to optimize network management by examining cases of enhancement of operational efficiency and security by improving the structure of CCTV monitoring network.

• Journal of information and communication convergence engineering
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• 제16권3호
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• pp.153-159
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• 2018

In this paper, we present a three-dimensional (3D) optical encryption technique for quick response (QR) code using computational synthesized integral imaging, computational volumetric reconstruction, and double random phase encryption. Two-dimensional (2D) QR code has many advantages, such as enormous storage capacity and high reading speed. However, it does not protect primary information. Therefore, we present 3D optical encryption of QR code using double random phase encryption (DRPE) and an integral imaging technique for security enhancement. We divide 2D QR code into four parts with different depths. Then, 2D elemental images for each part of 2D QR code are generated by computer synthesized integral imaging. Generated 2D elemental images are encrypted using DRPE, and our method increases the level of security. To validate our method, we report simulations of 3D optical encryption of QR code. In addition, we calculated the peak side-lobe ratio (PSR) for performance evaluation.