• Journal of Internet Computing and Services
• /
• v.4 no.6
• /
• pp.95-102
• /
• 2003

The Diffle-Hellman Key Exchange scheme can produce a common session key between the two communicators, but its problem is that it makes a man-in-the middle attack possible. To solve problems like these, several protocols have been put forward, and the Simple Authenticated Key Agreement (SAKA) Protocol is among them. This protocol has been suggested by Seo-Sweeney, Tseng, and Ku-Wang, respectively, In this paper, we will put forward a new protocol that has been improved from all the original protocols mentioned above, but is still safe and quick to use, While the existing protocol divides the common session key production stage and the verification stage, the protocol suggested in this paper takes care of both of those stages simultaneously, therefore improving the processing performance.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2007.05a
• /
• pp.1098-1099
• /
• 2007

In this paper, we propose a public key based security architecture for Wireless Sensor Networks (WSNs). The basic architecture comprises of two schemes; a key handshaking scheme based on simple linear operations for fast computation and an identity based cryptosystem which does not require any certificate authority. Our analysis shows that, the combined scheme ensures a good level of security and is very much suitable for the energy constrained trend of wireless sensor network.

• 제어로봇시스템학회:학술대회논문집
• /
• 1994.10a
• /
• pp.6-11
• /
• 1994

For a safety supervision, watching a restricted area so that no one go there is very important. This has been mostly accomplished by people. They keep an eye on many monitors at onece for a long time. It, however, is too simple and boring to concentrate it for a long time. So it's worth while to construct a watching system by image processing. And the system we made is now actually working at a certain hydroelectric power plant and some other restricted areas in Japan.

• 제어로봇시스템학회:학술대회논문집
• /
• 1987.10b
• /
• pp.680-683
• /
• 1987

The speech signal processing in the auditory system can be analysized based on two representations : Average discharge rate and Temporal discharge pattern. But the average discharge rate representation is restricted by the narrow dynamic range because of the rate saturation and the two tone suppression phenomena, and the temporal discharge pattern representation needs a sophisticate frequency analysis and synchrony measure. In this paper, a simple representation is proposed : using a model considering the interaction of Cochlear fluid-BM movement and a haircell model, the feature of speech signals (formant frequency and pitch of vowels) is easily estimated in the Average Synchronized Rate.

• Proceedings of the Korea Institute of Convergence Signal Processing
• /
• 2001.06a
• /
• pp.137-140
• /
• 2001

In this paper, Fuzzzy Digital PI+D Controller plans for load, noise, plant change, Fuzzy Controller makes use of simple four rule and membership function, and plant used three phase Induction Motor. Characteristic of system compared from experimentation respectively the proposed Control System, Digital PID Control and Digital PI+D Control System.

• Proceedings of the Korea Institute of Convergence Signal Processing
• /
• 2001.06a
• /
• pp.77-80
• /
• 2001

This paper presents a new threshold-based denoising method by using undecimated discrete wavelet transform (UDWT). It proved excellency of the UDWT compared with orthogonal wavelet transform (OWT), spatia1ly selective noise filtration (SSNF) and NSSNF added new parameter. Methods using the spatial correlation are effectual at edge detection and image enhancement, whereas algorithm is complex and needs more computation However, UDWT is effective at denoising and needs less computation and simple algorithm.

• Journal of Electrical Engineering and information Science
• /
• v.2 no.3
• /
• pp.22-28
• /
• 1997

In this paper, we propose an efficient multicast addressing scheme for he self-routing multistage networks. Using only N-bit routing header an the simple hardware logic, the new scheme can efficiently provides all point-to-multipoint connections in single pass through the multistage copy networks. We also designed a hardware logic of switching element to implementation of multicasting in ATM switches are performed.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2000.10b
• /
• pp.1051-1054
• /
• 2000

IMT-2000 moving picture messaging service is a primary auxiliary connection service that allows a caller to leave a message when the caller can not complete the call. As the number of service subscriber for wireless communication is dramatically increased, various wireless services as well as simple connection service are requried IMT-2000 moving picture messaging service increases the call completion rate and makes it possible to provide various services.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2016.04a
• /
• pp.687-688
• /
• 2016

본 논문에서는 잔기 유연성(residue flexibility)을 가진 단백질 아미노산에 대한 기하학적인 계산 효율성을 높이기 위해 아미노산을 단순 곡면으로 표현하는 기법을 제안한다. 잔기 유연성을 가진 아미노산은 고정된 백본(backbone)에 대해 잔기가 회전하는 특성을 갖는다. 단순 곡면 표현기법을 이용하여 아미노산의 충돌 감지 속도 효율성을 높일 수 있다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2001.10a
• /
• pp.773-776
• /
• 2001

본 논문에서는 캘리브레이션 패턴을 카메라와 평행한 평면에 위치시켜 카메라의 회전 요소를 없게 하여 회전 행렬이 단위 행렬이 되게 한 상태에서 카메라를 캘리브레이션 하였다. 카메라의 투영중심에 대한 투영면과 프레임 버퍼에서의 영상 중심 위치($C_x,\;C_y$), 촛점거리(f) 등의 내부 파라메타와 세계 좌표의 원점에 대한 카메라의 상대 위치($T_x,\;T_y,\;T_z$)를 서로 다른 거리에서 획득한 두 장의 패턴 영상을 이용하여 효과적으로 계산하였다.