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Spectral Content Characterization for Efficient Image Detection Algorithm Design

Spectral Content Characterization for Efficient Image Detect...

引用

International Conference on computer and Information Technology (CIT)

作者： Kyoung-su Park Sangjin Hong Peom Park Mobile Systems Design Laboratory Department of Electrical and Computer Engineering Stony Brook University-SUNY Stony Brook NY USA Department of Industrial and Information Engineering Ajou University Humintec Company Limited Suwon South Korea

This paper presents spectral characterization for efficient image detection using hyperspectral processing technique. We investigate relationship between the number of bands used in the detection so that the minimum number of bands are used in the processing. This approach reduces computation and implementation complexity of the algorithms. Specifically, we considered contribution coefficient by each band and based on this coefficient, we heuristically select the bands for processing. We have shown that for effective detection, only small number of bands are needed.

关键词： Detection algorithms Algorithm design and analysis Hyperspectral imaging Hyperspectral sensors Signal processing algorithms Image edge detection Image processing Libraries Object detection Mobile computing

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Tracking an Object in 3-D Space using Particle Filtering based on Sensor Array

Tracking an Object in 3-D Space using Particle Filtering bas...

引用

International Conference on computer and Information Technology (CIT)

作者： Jinseok Lee Jaechan Lim Sangjin Hong Peom Park Mobile Systems Design Laboratory Department of Electrical and Computer Engineering Stony Brook University-SUNY Stony Brook NY USA Department of Industrial and Information Engineering Ajou University Humintec Company Limited Suwon South Korea

This paper presents a formulation of particle filter for tracking an object in 3-D space. The 3-D tracking algorithm is derived based on bearings only tracking algorithm that is applied in tracking of an object in 2-D space with one angle measurement. We investigate and present the fusion process of the algorithms. The performance of the proposed algorithms are evaluated in detail.

关键词： Sensor arrays Particle tracking Signal processing algorithms Particle filters Adaptive signal processing Sonar navigation Particle measurements Information filtering Information filters Gas detectors

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Exponential Convergence Flow Control Model for Congestion Control

Exponential Convergence Flow Control Model for Congestion Co...

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IEEE International Conference on networking, Sensing and Control

作者： Weirong Liu Jianqiang Yi Dongbin Zhao J.T. Wen Laboratory of Complex Systems & Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China Department of Electrical Computer and Sysrems Engineering Rensselaer Polytechnic Institute Troy NY USA

Recently, many new flow control mechanisms derived from the classic Kelly model are proposed to solve network congestion problems. They perform well in stability, fairness or robustness. However, most of them have convergence rates that are linear since in classic Kelly model, the link price is only positive. In addition, some needs to introduce extra packet headers to get the price information. In this paper, we present a novel flow control model based on Kelly model in which link price can be negative to improve the convergence rate. Further, the proposed model uses two bits of ECN field in IP header to feedback price instead of introducing new packet header data. By this approach, we can implement flow control schemes achieving exponential convergence in traditional TCP/IP datagram format. NS2 simulation results show that our model can keep the advantages of other flow mechanisms, such as fairness and asymptotic stability with more rapid convergence rate

关键词： Convergence Robust stability Feeds TCPIP Optimal control Aggregates Lagrangian functions Asymptotic stability High-speed networks Wireless networks

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A fault-tolerant P-Q decoupled control scheme for static synchronous series compensator

A fault-tolerant P-Q decoupled control scheme for static syn...

引用

IEEE General Meeting Power& Energy Society

作者： Wei Qiao R.G. Harley G.K. Venayagamoorthy Intelligent Power Infrastructure Consortium (IPIC) in the School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA University of KwaZulu-Natal Durban South Africa Real-Time Power and Intelligent Systems Laboratory Department of Electrical and Computer Engineering University of Missouri Rolla MO USA

Control of nonlinear devices in power systems relies on the availability and the quality of sensor measurements. Measurements can be corrupted or interrupted due to sensor failure, broken or bad connections, bad communication, or malfunction of some hardware or software (referred to as missing sensor measurements in this paper). This paper proposes a fault-tolerant control scheme (FTCS) for a static synchronous series compensator (SSSC). This FTCS consists of a sensor evaluation and (missing sensor) restoration scheme (SERS) cascaded with a P-Q decoupled control scheme (PQDC). It is able to provide effective control to the SSSC when single or multiple crucial sensor measurements are unavailable. Simulation studies are carried out to examine the validity of the proposed FTCS. During the simulations, single and multiple phase current sensors are assumed to be missing, respectively. Results show that the SERS restores the missing data correctly during steady and transient states, including small and large disturbances, and unbalanced three-phase operation. Thus, the FTCS continuously provides effective control to the SSSC with and without missing sensor measurements

关键词： Fault tolerance Communication system control Software measurement Nonlinear control systems Control systems Power system faults Power system measurements Power system control Power systems Sensor systems

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A Smooth Control to Avoid Congestion for Wireless Network

A Smooth Control to Avoid Congestion for Wireless Network

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IEEE International Conference on networking, Sensing and Control

作者： Weirong Liu Jianqiang Yi Dongbin Zhao J.T. Wen Laboratory of Complex Systems & Intelligence Science Institute of Automation Chinese Academy and Sciences Beijing China Department of Electrical Computer and Sysrems Engineering Rensselaer Polytechnic Institute Troy NY USA

In wireless network, TCP Reno and TCP Vegas do not work well as they do in wired network, because they take packet losses or timeout as the signal of congestion. However, in wireless network, temporary link outages or fading-induced bit errors result in packet losses, so the TCP decreases the cwnd improperly. Some variations of TCP have been developed to improve the transport protocol performance for wireless network. These approaches progress along two directions. One direction is to hide any losses not related to congestion from the sender, so that the sender can only detect the packet losses due to congestion, such as I-TCP or snoopy protocol. However these protocols are not fit for ad hoc network in which there are no middle base stations between the wire link and the wireless link. Thus, the other direction, explicit congestion notification (ECN), is a promising direction in the wireless network. In the paper, we propose a new protocol based on expanded ECN mechanism to respond to packet losses in the wireless environment more properly. The paper gives the idea to construct the new mechanism, called TCP 3-states/ECN2, and analyses the stability of the new mechanism. By using the NS-2 simulator, the paper compares the new mechanism on throughput, drop ratio and delay time with TCP Reno and TCP Vegas. The simulation result indicates TCP 3-states/ECN2 mechanism can get better tradeoff of throughput and delay time, so it can work well in wireless environment

关键词： Wireless networks TCPIP Wireless application protocol Wire Transport protocols Base stations Throughput Delay effects IP networks Bit error rate

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Sufficient excitation conditions for system identification using binary-valued observations

Sufficient excitation conditions for system identification u...

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American Control Conference (ACC)

作者： Le Yi Wang G.G. Yin Yanlong Zhao Ji-Feng Zhang Department of Electrical and Computer Engineering Wayne State University Detroit MI USA Department of Mathematics Wayne State University Detroit MI USA Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy and Sciences China

Conditions on input signals are derived that characterize their probing richness for system identification using binary-valued observations. Identification configurations in open-loop, filtering, and feedback systems are discussed together with different scenarios of noises including actuator noise, input measurement noise, and output measurement noises. In addition to system parameter estimation, identifiability and sufficient excitation conditions are also derived under unknown threshold and noise distributions

关键词： System identification Noise measurement Sensor systems Parameter estimation Sensor phenomena and characterization Distribution functions Mathematics Filtering Output feedback Actuators

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NGL03-3: Provision of Active Services through Next Generation networking Middleware

NGL03-3: Provision of Active Services through Next Generatio...

引用

IEEE Globecom 2006

作者： George Kormentzas Charalabos Skianis Dimitris Kouis Panagiotis Stathopoulos Department of Information and Communication Systems Engineering University of Aegean Greece National Centre for Scientific Research Demokritos Institute of Informatics and Telecommunications Athens Greece School of Electrical and Computer Engineering Computer Networks Laboratory National and Technical University of Athens Athens Greece

The evolution of next generation networking middleware (NGNM) yields to the provision of personalized next-generation active services, each one with different traffic characteristics and networking requirements for security, billing, QoS (Quality of Service), mobility, etc. in an efficient and economical usage of network resources. The introduction and well establishment of the active services concept, which will be services capable of dynamically adapting themselves to various underlying networking environment conditions according to the instructions of NGNM and the requirements posed by the end user, constitutes the major goal of this paper. In order to avoid proprietary and custom implementation solutions, an initial and generic active services reference architecture that can be followed by potential active services developers is presented. Finally, an implemented prototype that follows the proposed reference architecture provides a first quick validation of the discussed active service concept.

关键词： Next generation networking Middleware Quality of service Telecommunication traffic computer networks Environmental economics Prototypes Costs Proposals computer architecture

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A Note on Low Correlation Zone Signal Sets

A Note on Low Correlation Zone Signal Sets

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Annual Conference on Information Sciences and systems (CISS)

作者： Guang Gong Solomon W. Golomb Hong-yeop Song Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada Department of Ee-Systems University of Southern California USC Los Angeles CA USA Center for Information Technology Coding and Information Theory Laboratory Department of Electrical and Electronics Engineering Yonsei University Seoul South Korea

In this note, we present a connection between designing low correlation zone (LCZ) sequences and the results of correlation of sequences with subfield decompositions presented in a recent book by the first two authors. This results in low correlation zone signal sets with huge sizes over three different alphabetic sets: finite field of size q, integer residue ring modulo q, and the subset in the complex field which consists of powers of a primitive q-th root of unity. We also provide two open problems along this direction.

关键词： Galois fields Signal design Books Multiaccess communication Fourier transforms Information technology Information theory Boolean functions

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Adaptive Left Ventricular Ejection Time Estimation Using Multiple Peripheral Pressure Waveforms

Adaptive Left Ventricular Ejection Time Estimation Using Mul...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Jin-Oh Hahn D. McCombie H.H. Asada A. Reisner H. Hojman R. Mukkamala Laboratory for Information Systems and Technology Massachusetts Institute of Technology USA Emergency Department Massachusetts General Hospital USA Department of Surgery Yale University USA Department of Electrical and Computer Engineering Michigan State University USA

An adaptive approach is proposed for the problem of left ventricular ejection time (LVET) estimation using peripheral pressure waveform signals. The proposed algorithm, which makes use of 2 peripheral pressure measurements, makes it possible to adaptively estimate the LVET in response to different cardiovascular physiologic states. The algorithm builds on features obtained from global and branch-specific characterization of the cardiovascular circulation as well as waveform features to dramatically improve the accuracy of LVET estimation. The performance of the proposed approach is evaluated with respect to its heart-rate-based conventional counterpart, which shows approximately 40% improvement of estimation accuracy in terms of R 2 values from 0.6655 for the conventional waveform-based approach to 0.9222 for the proposed approach

关键词： Heart rate Cardiology Blood pressure Pulse measurements Pressure measurement Biomedical monitoring State estimation System identification Valves Helium

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BlueGene/L Failure Analysis and Prediction Models

BlueGene/L Failure Analysis and Prediction Models

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International Conference on Dependable systems and Networks (DSN)

作者： Yinglung Liang Yanyong Zhang A. Sivasubramaniam M. Jette R. Sahoo Electrical & Computer Engineering Department Rutgers University USA Computational Resource Management Group Lawrence Livemore National Laboratory USA Computer Science & Engineering Department Pennslyvania State University USA Exploratory Systems Software Department IBM Thomas J. Watson Research Center USA

The growing computational and storage needs of several scientific applications mandate the deployment of extreme-scale parallel machines, such as IBM's BlueGene/L which can accommodate as many as 128 K processors. One of the challenges when designing and deploying these systems in a production setting is the need to take failure occurrences, whether it be in the hardware or in the software, into account. Earlier work has shown that conventional runtime fault-tolerant techniques such as periodic checkpointing are not effective to the emerging systems. Instead, the ability to predict failure occurrences can help develop more effective checkpointing strategies. Failure prediction has long been regarded as a challenging research problem, mainly due to the lack of realistic failure data from actual production systems. In this study, we have collected RAS event logs from BlueGene/L over a period of more than 100 days. We have investigated the characteristics of fatal failure events, as well as the correlation between fatal events and non-fatal events. Based on the observations, we have developed three simple yet effective failure prediction methods, which can predict around 80% of the memory and network failures, and 47% of the application I/O failures

关键词： Failure analysis Predictive models Production systems Checkpointing Concurrent computing Parallel machines Hardware Runtime Fault tolerant systems Prediction methods

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