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From adaptive to evolving fuzzy control policy: Critical processing steps and configuration

From adaptive to evolving fuzzy control policy: Critical pro...

引用

World Conference on Complex Systems (WCCS)

作者： Rafik Lasri Ignacio Rojas Héctor Pomares Dep. Computer Science Univ. of Abdelmalek Esâadi. Morocco Dep. Computer Architecture & Computer Technology Univ. of Granada Spain

In previous work, the efficiency of a new Adaptive Fuzzy Logic Controller (AFLC) was successfully tested on a real time control process. It's to know that the adaptation process do not require any kind of offline pre-training or information about the mathematical model of the plant. Starting from a defined structure of Fuzzy Logic Controller, the error and its derivative were the only information used to tune this adaptive controller. The adaptation and self learning are done by adjusting their internal parameters in real time. These papers aim to expose and focus on the enhancement proposed by the original authors of this control algorithm in order to proceed to a series of comparisons using two different control processes (Tank level and temperature of a room) that can reflects the control performances improvement. The Adaptive controller performances are improved by giving him more freedom and endowing him by evolved tools that can strongly support any kind of unexpected changes on the controlled plant behaviors. The controller exposed here can start the control with a very basic structure, assigning (arbitrarily) one membership function for each input. Through two stages, the control algorithm starts the adaptation and the control of the plant firstly by adjusting the rules consequences using the output error then in the second stage and when the adaptation process cannot bring no more improvement, the controller starts the evolved process to get a new topology that can guarantee more accuracy by adding new membership functions in the inputs spaces.

关键词： Process control Aerospace electronics Real-time systems Mathematical model Fuzzy logic Topology Delays

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Derivation of AC small signal model and analysis of trans Z-source inverter

Derivation of AC small signal model and analysis of trans Z-...

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Iranian Conference on Electrical Engineering (ICEE)

作者： Mehran Moslehi Bajestan Mohammad Ali Shamsinejad Davood Arab Khaburi Dep. of Electrical and Computer Engineering University of Birjand Birjand Iran Dep. of Electrical Engineering Iran University of Science and Technology Tehran Iran

This paper presents the ac small signal modeling and analysis of trans Z-Source inverter (trans ZSI). Trans ZSI has been derived from quasi Z-source converter recently. While maintaining all prominent features of pervious Z-source inverters, trans ZSI has several unique advantages such as increased voltage gain, reduced voltage stress and reduced components of impedance network. In the process of designing control schemes for the trans ZSI, knowledge of the transfer function representing its unique dc impedance network is essential. In particular, the state space averaging method is employed to deduce the transfer functions. These transfer functions reveal the presence of right half plane (RHP) zero, which imposes some limitations on controller design. The RHP zero trajectories with variations in network parameters can be studied using classical root-locus analyses. Considering system dynamic characteristics, the trans ZSI design guidelines for passive component sizing is investigated by parameter sweeping of the small signal model based transfer functions. Simulation results are presented to verify the dynamic modeling identified in this paper.

关键词： Inverters Electrical engineering Poles and zeros Capacitors Damping Analytical models

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Korean paraphrase evaluation using morphological analysis

Korean paraphrase evaluation using morphological analysis

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International Conference on Advanced Communication technology (ICACT)

作者： Sung Won Moon Hojin Choi Gahgene Gweon Dep. Of Knowledge Service Engineering Korea Advanced Institute of Science and Technology Daejeon Rep. Of Korea Dep. Of Computer Science Korea Advanced Institute of Science and Technology Daejeon Rep. Of Korea

ISBN: (纸本)9781467381161

Paraphrase evaluation is used to determine whether two input sentences share a same meaning. The automatic analysis for paraphrase evaluation technology has a potential use in the area of information retrieval technology since correctly paraphrased sentences can be used as alternative input sentence in the retrieval process. In this paper, we suggest an evaluation method that is suitable for the Korean language by using morphological analysis. Using our method, we present preliminary results on how our automatic evaluation scores compare to the human evaluation scores.

关键词： Manuals Computational linguistics Information retrieval Natural language processing Correlation Knowledge engineering Syntactics

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Using Combined Cellular Ad Hoc Communications for Smart Environments

Using Combined Cellular Ad Hoc Communications for Smart Envi...

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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Mimoza Durresi Arjan Durresi Leonard Barolli Kazunori Uchida Dep. of IT Mathematics and Statistics European University of Tirane Tirana Albania Dep. of Computer Science IUPUI Indianapolis USA Dep. of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan

ISBN: (纸本)9781479917761

We propose a Heterogeneous Multi Domain (HMD) architecture and protocols that uses ad hoc and cellular communications for enabling the exchange of information among users and smart environments. In particular, we focuss on the data communication and information diffusion related to tourism industry. Sensor's technology enables today the collection of various data related to the environment, such as temperature, location, and so on. This information can be delivered timely to users interacting with the environment. For example, a user might get direction in a building or in a park. Our architecture uses a network of gateways as an hierarchical virtual infrastructure to interconnect various network domains. Gateways are responsible for translation among different communication protocols, including routing, signalling, and security. HMD architecture is scalable, flexible and adaptive to QoS needs for interdomain communications. The protocol goal is to optimize such communications in terms of performance.

关键词： Logic gates Protocols Ad hoc networks Routing Smart phones Delays Wireless sensor networks

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Using Cellular Sensor Networks for Environment Protection

Using Cellular Sensor Networks for Environment Protection

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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

ISBN: (纸本)9781479917761

Protecting the environment from many threats has become a priority worldwide. The existing sensor technology enables the continuous monitoring of various parameters related to environment status, such as air quality and many others. In this paper we propose a secure architecture based on cellular networks to collect such sensors' information in real time. The cell phones can interact with the cellular network and the sensor networks at the same time. This unique ability can be leveraged to provide better authentication and security. We propose an architecture for these networks along with protocols that can be used to establish security. In our architecture, we use gateways, as intermediate nodes that are able to interact with both the cell phones and the sensor nodes.

关键词： Cellular phones Logic gates Cryptography Authentication computer architecture Servers

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Energy Models for Communication of Future Computing Platforms

Energy Models for Communication of Future Computing Platform...

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IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)

作者： Elke Franz Stefan Pfennig Bho Matthiesen Christian Scheunert Eduard A. Jorswieck Dep. of Computer Science/Privacy and Data Security Dep. of Electrical Engineering and Information Technology/Communications Laboratory Technische Universität Dresden Dresden Germany

ISBN: (纸本)9781467365567

Energy efficiency is an essential requirement on future computer architectures. Thereby, the efficiency of the communication will play an important role. Within this paper, we present an energy model for a unicast multi-hop communication. The model allows to derive predictions about the energy of a future computing platform. Further, it can be used to identify which components of the system or tasks related to communication have a significant influence on the overall energy and, hence, require special attention in the design phase. We discuss how values for processing delays and power consumption can be determined for a future computing platform and present values for a target platform. The energy model is applied to derive energy predictions for this platform.

关键词： Delays Computational modeling Power demand Network coding Open systems Hardware Receivers

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Removing Smoothing Effects for Color Image Segmentation

Removing Smoothing Effects for Color Image Segmentation

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IEEE International Conference on Systems, Man and Cybernetics

作者： Wen-Chang Cheng Hua-Hung Tseng Dep. of Computer Science and Information Engineering Chaoyang University of Technology Taiwan R.O.C.

ISBN: (纸本)9781479986989

In this study, we described the effects of image smoothing on image segmentation, introduced a method proposed by Yang et al. For removing smoothing effects (hereafter referred as Yang's method), and modified this method to solve image segmentation problems. The results showed that Yang's smoothing method still required further improvements, therefore, two solutions to solving problems related to this method were proposed. In Yang's method, the researchers only considered removing the effects of central pixels in a mask on mask calculation, neglecting the effects of edge pixels in a region of a mask on mask calculation. Therefore, we incorporated an edge mask calculation into Yang's method. Moreover, in Yang's method, distinct color masks are contained in the color components of a single pixel, which cause these components to yield differing adjustment results. Thus, the solution to this problem is to adopt a single-colored mask for color adjustments. The experimental results verified that the method proposed in this study effectively improved Yang's method and removed the effects of smoothing on image segmentation.

关键词： Image color analysis Image segmentation Image edge detection Smoothing methods Color Gray-scale Noise reduction

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STESCAL3D: Subjective evaluation of HD stereo video streaming using H.264 SVC in diverse laboratory environments

STESCAL3D: Subjective evaluation of HD stereo video streamin...

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International Workshop on Quality of Multimedia Experience, QoMEx

作者： Charalampos Mysirlidis Tasos Dagiuklas Pedro M. R. Rocha Luis A. Da Silva Cruz Dino Kotaranin Savina Gruicic Emil Dumic Athanassios Skodras School Science & Technology Hellenic Open University Patras Greece Dep. of Wireless Communications University of Zagreb Zagreb Croatia Dep. of Electrical and Computer Engineering University of Coimbra Coimbra Portugal Dep. of Electrical and Computer Engineering University of Patras Patras Greece

This paper presents a new 3D video database (STESCAL3D -Stereoscopic Scalable 3D), made up of 3D stereo video sequences affected by different types of degradations. A set of subjective quality grades have been collected in three geographically displaced sites. The database contents have been produced using scalable video coding to encode 3D stereo video clips with distinct encoding parameters, after which different transmission degradations have been applied to the encoded video streams. These sequences have been subjectively evaluated by observers from three countries, Croatia, Portugal and Greece, using a purpose-built web-based platform. The subjective quality data compiled were processed, analyzed and compared to quality estimates obtained using several well-known objective measures. It is shown that the correlation between objective quality estimates and the subjective quality grades is in general low. Additionally the results show that stereo-view asymmetries in terms of encoding parameters and packet loss ratio (PLR) leads to low quality of experience. The video database and the subjective grades collection are publicly available with the referral link provided in the text.

关键词： Three-dimensional displays Streaming media Observers Video sequences Databases Encoding Correlation

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Confidential Network Coding: Physical Layer vs. Network Layer

Confidential Network Coding: Physical Layer vs. Network Laye...

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IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)

作者： Stefan Pfennig Elke Franz Johannes Richter Christian Scheunert Eduard A. Jorswieck Dep. of Computer Science/Privacy and Data Security Technische Universitat Dresden Dresden Germany Dep. of Electrical Engineering and Information Technology Technische Universitat Dresden Dresden Germany

ISBN: (纸本)9781467365567

In all kind of information exchange, security is essential. One protection goal that has to be enforced is confidentiality. In state-of-the-art protocols, messages are encrypted before they are transmitted to ensure their confidentiality. However, incorporating novel technologies like network coding allows for more efficient solutions. Within this article, we compare different solutions for confidential communication by means of network coding at physical layer and at network layer. We discuss security, efficiency, and computational complexity of these approaches. The results allow to draw conclusions about the choice of a suited communication scheme dep.nding on the system model and the relevant parameters.

关键词： Network coding Relays Physical layer Lattices Computational modeling Cryptography

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Resilient and efficient communication in many-core systems using network coding

Resilient and efficient communication in many-core systems u...

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IEEE International Conference on Performance, Computing and Communications (IPCCC)

作者： Sadia Moriam Yexin Yan Erik Fischer Elke Franz Gerhard P. Fettweis Dep. of Electrical Engineering and Information Technology Vodafone Chair Mobile Communication Systems Centre for Advancing Electronics Dresden (CFAED) Dep. of Computer Science Technische Universität Dresden Dresden Germany

Due to technology scaling, the number of processor cores on a chip constantly increases. Already today, we reach the domain of so called many-core systems-on-chip. However, this advance comes at the cost of reliability, which especially affects the communication performance of the underlying network-on-chip. Today's resiliency concepts for network-on-chip like automatic repeat request with retransmission are not feasible anymore and lead to long latencies and high network load. In this paper, we propose an on-chip transmission concept based on random linear network coding to provide high resiliency and an efficient communication in many-core processors at the same time. The concept offers a flexible and efficient computable coding scheme, which is well suited for on-chip communication and allows to exploit the path diversity of large networks. First, we use a flit-level cycle-accurate simulation model to investigate the performance potential of the proposed transmission scheme on a network-on-chip with 64 cores. Second, we propose an analytic model for random linear network coding in network-on-chip with retransmission, which is able to provide a very accurate performance estimation close to the cycle-accurate simulation. Finally, we apply the analytic model to investigate the performance potential on the large-scale, assuming a processor with 1024 cores.

关键词： Reliability Receivers Topology

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