• Title/Summary/Keyword: Dynamic Network

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Dynamic Network for Block Cipher Algorithm (블록 암호 알고리즘을 위한 Dynamic-네트워크)

  • 박승배
    • Proceedings of the Korean Information Science Society Conference
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    • 1998.10a
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    • pp.615-617
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    • 1998
  • 본 논문에서는 블록 암호 알고리즘을 위한 새로운 Dynamic-네트워크를 제시한다. Dynamic-네트워크 는 좋은 confusion과 diffusion 메카니즘을 제공한다. 어떠한 Dynamic-네트워크 {{{{ { 2}^{n }-비트(n >=1) }}}}길 이를 갖는 모든 평문을 입력으로 할 수 있으며, 일정 길이 이상의 모든 비트 스트링을 키로 사용할 수 있다.

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Nonlinear Dynamic Manipulator Control Using DNP Controller (DNP 제어기에 의한 비선형 동적 매니퓰레이터 제어)

  • Cho, Hyeon-Seob;Kim, Hee-Sook;Ryu, In-Ho;Jang, Sung-Whan
    • Proceedings of the KIEE Conference
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    • 1999.07b
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    • pp.764-767
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    • 1999
  • In this paper, to bring under robust and accurate control of auto-equipment systems which disturbance, parameter alteration of system, uncertainty and so forth exist, neural network controller called dynamic neural processor(DNP) is designed. Also, the architecture and learning algorithm of the proposed dynamic neural network, the DNP, are described and computer simulations are provided to demonstrate the effectiveness of the proposed learning method using the DNP.

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Design of an Adaptive Output Feedback Controller for Robot Manipulators Using DNP (DNP을 이용한 로봇 매니퓰레이터의 출력 궤환 적응제어기 설계)

  • Cho, Hyun-Seob
    • Proceedings of the KAIS Fall Conference
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    • 2008.11a
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    • pp.191-196
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    • 2008
  • The intent of this paper is to describe a neural network structure called dynamic neural processor(DNP), and examine how it can be used in developing a learning scheme for computing robot inverse kinematic transformations. The architecture and learning algorithm of the proposed dynamic neural network structure, the DNP, are described. Computer simulations are provided to demonstrate the effectiveness of the proposed learning using the DNP.

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Adaptive Control of Non-linearity Dynamic System using DNU (DNU에 의한 비선형 동적시스템의 적응제어)

  • Cho, Hyeon-Seob;Kim, Hee-Sook
    • Proceedings of the KIEE Conference
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    • 1998.11b
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    • pp.533-536
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    • 1998
  • The intent of this paper is to describe a neural network structure called dynamic neural processor(DNP), and examine how it can be used in developing a learning scheme for computing robot inverse kinematic transformations. The architecture and learning algorithm of the proposed dynamic neural network structure, the DNP, are described. Computer simulations are provided to demonstrate the effectiveness of the proposed learning using the DNP.

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Smart Dynamic Pricing in Cognitive Radio Systems

  • Vo, Dat
    • Journal of Korea Society of Industrial Information Systems
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    • v.17 no.2
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    • pp.11-18
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    • 2012
  • Smart Dynamic Pricing has been introduced to address the under-utilised network resources problem in mobile telecommunications systems. In this paper, we investigate the applicability of Smart Dynamic Pricing and its signalling models into Cognitive Radio Systems. Cognitive Radio System is defined as one in which cognitive radios are employed to access shared spectrum and/or dynamically allocated spectrum. Network elements, protocols, traffic and control channels, and system architecture are proposed for the implementation of Smart Dynamic Pricing in Cognitive Radio System. It is found that Smart Dynamic Pricing and its signalling models can be applied to Cognitive Radio Systems.

DESIGN OF CONTROLLER FOR NONLINEAR SYSTEM USING DYNAMIC NEURAL METWORKS

  • Park, Seong-Wook;Seo, Bo-Hyeok
    • 제어로봇시스템학회:학술대회논문집
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    • 1995.10a
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    • pp.60-64
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    • 1995
  • The conventional neural network models are a parody of biological neural structures, and have very slow learning. In order to emulate some dynamic functions, such as learning and adaption, and to better reflect the dynamics of biological neurons, M.M. Gupta and D.H. Rao have developed a 'dynamic neural model'(DNU). Proposed neural unit model is to introduce some dynamics to the neuron transfer function, such that the neuron activity depends on internal states. Integrating an dynamic elementry processor within the neuron allows the neuron to act dynamic response Numerical examples are presented for a model system. Those case studies showed that the proposed DNU is so useful in practical sense.

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The Design and Analysis of Dynamic Cipher (Dynamic Cipher의 설계 및 분석)

  • Sohn, Seon-Gyoung;Park, Seung-Bae;Lim, Hyeong-Seok
    • Proceedings of the Korea Information Processing Society Conference
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    • 2000.10a
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    • pp.149-152
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    • 2000
  • Dynamic Network은 블록 크기와 키 크기, 라운드 수가 동시에 가변이며, 각 라운드에서 서브 블록과 서브 키 사이에 연산이 이루어지지 않는 대칭키 블륵 암호 알고리즘을 위한 기본구조이다. 본 논문에서는 Dynamic Network에 기반한 대칭키 블록 암호 알고리즘을 제안한다. 제안하는 Dynamic Cipher는 임의의 비트 스트링을 키로서 사용할 수 있다. 제안하는 Dynamic Cipher에 차분 분석법과 선형 분석법의 적용이 어려움을 보이고, 대칭키 블록 암호 알고리즘이 만족하여야 할 성질들에 대한 실험 결과들을 제시한다.

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A Study on Time-Expanded Network Approach for Finding Maximal Capacity of Extra Freight on Railway Network (시간전개형 네트워크 접근법을 이용한 기존 열차시각표를 고려한 추가적 철도화물 최대수송량 결정에 관한 연구)

  • Ahn, Jae-Geun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.8
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    • pp.3706-3714
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    • 2011
  • This study deals with the algorithm to finding the maximum capacity and their schedule of extra freight while honoring planned timetable of trains on railway network. Time-expanded network, a kind of space-time graph, can be shown both planned train timetable and dynamic features of given problem. Pre-processing procedure is a series of infeasible arcs removal from time-expanded network honoring planned timetable. In the result, this preprocessing transforms dynamic features of given problem into static maximal flow problem which can be easily solved.

A Design of XG-PON Architecture based on Next Generation Network Model for Supporting Dynamic Quality of Service (동적 QoS 지원을 위한 NGN 모델 기반 XG-PON 구조 설계)

  • Lee, Young-Suk;Lee, Dong-Su;Kim, Young-Han
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.49 no.1
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    • pp.59-67
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    • 2012
  • In this paper, we designed an inter-operation architecture of 10G G-PON(Gigabit passive optical network) network and NGN(Next generation network) architecture. And, we proposed mechanism of dynamic GEM(G-PON encapsulation mode) Port-ID allocation. This is able to solve a problem of 10G G-PON inter-operation. The mechanism of dynamic GEM Port-ID allocation has OMCI(ONT management control and interface) mapping table for IP address and port number. That architecture is able to support per flow QoS(Quality of service) as well as QoS of NGN requirement. So that can improve the resource efficiency of QoS than the existing G-PON architecture.

Partially Distributed Dynamic Model for Secure and Reliable Routing in Mobile Ad hoc Networks

  • Anand, Anjali;Aggarwal, Himanshu;Rani, Rinkle
    • Journal of Communications and Networks
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    • v.18 no.6
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    • pp.938-947
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    • 2016
  • A mobile ad hoc network (MANET) is a collection of mobile nodes communicating in an infrastructure-less environment without the aid of a central administrating authority. Such networks entail greater dependency on synergy amongst the nodes to execute fundamental network operations. The scarcity of resources makes it economically logical for nodes to misbehave to preserve their resources which makes secure routing difficult to achieve. To ensure secure routing a mechanism is required to discourage misbehavior and maintain the synergy in the network. The proposed scheme employs a partially distributed dynamic model at each node for enhancing the security of the network. Supplementary information regarding misbehavior in the network is partially distributed among the nodes during route establishment which is used as a cautionary measure to ensure secure routing. The proposed scheme contemplates the real world scenario where a node may exhibit different kinds of misbehavior at different times. Thus, it provides a dynamic decision making procedure to deal with nodes exhibiting varying misbehaviors in accordance to their severity. Simulations conducted to evaluate the performance of the model demonstrate its effectiveness in dealing with misbehaving nodes.