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Towards an inclusive Parkinson's screening system

Towards an inclusive Parkinson's screening system

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Oana Geman Saeid Sanei Iuliana Chiuchisan Adrian Graur Aleš Procházka Oldřich Vyšata Department of Health and Human Development “Stefan eel Mare” University of Suceava Romania Department of Computer Science Electronics and Automation “Stefan cel Mare” University of Suceava Romania Faculty of Engineering and Physical Sciences University of Surrey United Kingdom Department of Computing and Control Engineering Institute of Chemical Technology Czech Republic Department of Neurology Charles University Czech Republic

In this study, brain, and gait dynamic information were combined and used for diagnosis and monitoring of Parkinson's disease (the most important Neurodegenerative Disorder). Analysis of the information corresponding to a prescribed movement involving tremor, and the related changes in brain connectivity is novel and original. Analytically, developing a space-time nonlinear adaptive system which fuses brain and gait information algorithmically is proposed here for the first time. The overall dynamic system will be constrained by the clinical impressions of the patient symptoms embedded in a knowledge-based system. The entire complex constrained problem were solved to enable a powerful model for recognition and monitoring of Parkinson's disease and establishing appropriate rules for its clinical following up.

关键词： Brain modeling Adaptation models Parkinson's disease Chaos Signal processing algorithms Nonlinear dynamical systems

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Towards socket-level network header caching

Towards socket-level network header caching

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Roedunet International Conference (RoEduNet)

作者： Vlad Dogaru Radu Iliescu Nicolae Ţăpuş Faculty of Automatic Control and Computer Science University POLITEHNICA of Bucharest Ixia Communications Bucharest Romania

In recent years, we are seeing an important increase in network interface transmission rates. This poses a challenge to come up with better methods of mitigating latency at all levels in a computer system. In this paper, we propose an approach that works well in systems where scatter-gather transfers are fast compared to memory accesses. We note that, in a Transport level flow, a large part of the Network and Data Link layer headers do not vary. As a result, we assert that it is favorable to store the parts of the header that do not vary, instead of copying them from the socket data structure to the packet buffer for each packet transmission. The network interface then uses scatter-gather to assemble the network packet without explicitly copying data in memory. This approach was partially implemented, but we propose extending it from the Data Link to the superior Network level, hoping that it will aid in lessening the load on legacy hardware at high packet transmission rates.

关键词： Protocols Sockets IP networks Linux Internet Electronic mail Hardware

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A spatial pyramid approach for texture classification

A spatial pyramid approach for texture classification

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International Symposium on Electrical and electronics Engineering (ISEEE)

作者： Andreea Lavinia Popescu Radu Tudor Ionescu Dan Popescu Faculty of Automatic Control and Computer Science Politehnica University of Bucharest Bucharest Romania Department of Computer Science University of Bucharest Bucharest Romania

Texture classification, texture synthesis, or similar tasks are an active topic in computer vision and pattern recognition. This paper aims to present two spatial pyramid representations for texture classification. Most techniques designed for texture classification are based on machine learning. Images are usually represented as feature vectors, which are then used to train a classifier. In the spatial pyramid representation, images are divided into increasingly fine sub-regions (bins) and features are extracted from each bin. This representation is able to capture details about the fractal structure of the texture images. Two experiments are conducted on popular texture classification data sets, namely Brodatz and UIUCTex. In the experiments, several kernel representations and kernel classifiers are combined and evaluated. It seems that the spatial pyramid in combination with intersection kernel and Kernel Discriminant Analysis gives the best results. The proposed pyramid representations can improve the accuracy by as much as 5% over the standard feature representation, showing that the pyramid structure is indeed useful for texture classification.

关键词： Kernel Feature extraction Accuracy Vectors Fractals Standards Training

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Structured coprime factorizations description of linear and time-invariant networks

Structured coprime factorizations description of linear and ...

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52nd IEEE Conference on Decision and control, CDC 2013

作者： SabǍu, Şerban OarǍ, Cristian Warnick, Sean Jadbabaie, Ali Electrical and Computer Engineering Dept. Stevens Institute of Technology United States Faculty of Automatic Control Dept. University Politehnica Bucharest Romania Faculty of Computer Science Department Information and Decision Algorithms Laboratories Brigham Young University United States Faculty of Electrical and Systems Engineering Dept. University of Pennsylvannia United States

ISBN: (纸本)9781467357173

In this paper we study state-space realizations of Linear and Time-Invariant (LTI) systems. Motivated by biochemical reaction networks, Gonçalves and Warnick have recently introduced the notion of a Dynamical Structure Functions (DSF), a particular factorization of the system's transfer function matrix that elucidates the interconnection structure in dependencies between manifest variables. We build onto this work by showing an intrinsic connection between a DSF and certain sparse left coprime factorizations. By establishing this link, we provide an interesting systems theoretic interpretation of sparsity patterns of coprime factors. In particular we show how the sparsity of these coprime factors allows for a given LTI system to be implemented as a network of LTI sub-systems. We examine possible applications in distributed control such as the design of a LTI controller that can be implemented over a network with a pre-specified topology. ©2013 IEEE.

关键词： Factorization

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Hardware Acceleration in Ceph Distributed File System

Hardware Acceleration in Ceph Distributed File System

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International Symposium on Parallel and Distributed Computing

作者： Pistirica Sorin Andrei Moldoveanu Florica Moldoveanu Alin Asavei Victor Caraman Mihai Claudiu Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Bucharest Romania Faculty of Electrical Engineering and Computer Science Transylvania University of Brasov Brasov Romania

ISBN: (纸本)9781479907342

Cloud computing becomes more and more popular providing the means to organize and deliver almost any kind of data and software services. Since it is inherently scalable to support rapid economic growth and productivity, its distributed data storage layer needs to be capable to address these requirements. A distributed file system contains a large number of cluster nodes and a large number of clients interacting with it. In this article, we propose two acceleration mechanisms based on multi-core network SoC to maximize each cluster node performance. First, the requests to the cluster node are balanced evenly on the platform cores, and second the requests are classified to decrease latency of sensitive operations and improve the overall cluster responsiveness and availability. For implementation, tests and measurements we have used a novel open source distributed file system: Ceph. Among many advantages over the competitors of Ceph we mention preservation of POSIX API, completely decoupled data and metadata and usage of object storage devices instead of block devices.

关键词： Hardware System-on-chip Engines Monitoring File systems Multicore processing

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Smart passive infrared sensor - Hardware platform

Smart passive infrared sensor - Hardware platform

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Annual Conference of the IEEE Industrial electronics Society

作者： Artur Frankiewicz Rafal Cupek Faculty of Automation Control Electronics and Computer science Silesian University of Technology

ISBN: (纸本)9781479902255

Passive Infrared Sensors (PIR) are inexpensive devices widely used as motion detectors. Standard sensor provides just trigger signal on movement detection. This paper aims to extend standard usage of the sensor from motion detection to motion recognition and activity classification. In applications where motion detection based on video surveillance is not possible due regulations or high costs smart PIR sensor could be the only solution. This publication starts the topic of PIR based motion classification with analyses of hardware requirements and hardware selection for the smart sensor.

关键词： PIR Smart motion sensor Motion detection

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Remote control of the artificial arm model using 3D hand tracking

Remote control of the artificial arm model using 3D hand tra...

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International Symposium on Electrodynamic and Mechatronic System (SELM)

作者： G. Baron P. Czekalski D. Malicki K. Tokarz Automatic Control Electronics and Computer Science Silesian University of Technology Gliwice Poland Politechnika Slaska Gliwice PL

Modern sensing technologies create new possibilities to control mobile robots without any dedicated manipulators. In this article authors present a novel method that enables driving of the Mindstorms NXT artificial arm with Microsoft Kinect, using gesture recognition. To imitate movement of an artificial robotic arm, an algorithm of the human-computer interaction is employed using skeleton tracking and gesture control in 3D space.

关键词： Robot sensing systems Actuators Java Tracking Buildings

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Multi spatio-temporal co-occurrence measures for human action classification 13th

Multi spatio-temporal co-occurrence measures for human actio...

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13th IAPR International Conference on Machine Vision Applications, MVA 2013

作者： Md Sabri, A.Q. Boonaert, J. Lecoeuche, S. Mouaddib, E. Mines Douai Computer Science and Automatic Control Research Unit 764 Boulevard Lahure Douai France Universite de Picardie Jules Verne Modeling Info rmation and System Laboratory Faculty of Science 33 rue Saint Leu Amiens Cedex 180039 France

ISBN: (纸本)9784901122139

This paper deals with human action classification by utilizing spatio-temporal (ST) co-occurrences between labels of video-words that are stored within ST correlo-grams. Mutual information based clustering method is employed to reduce the size of the vocabulary created from local descriptors. Multiple characterizations for human actions in videos are extracted from the correl-ograms that are used for human action classification. These include a highly discriminative co-occurrence vector and a Haralick texture vector. The proposed method is implemented using a SVM classification technique. For evaluation purposes, the KTH and UCF Sports action recognition datasets, are used as they are the most well known and challenging datasets. The proposed method succeed in classifying different action classes, and improves the classification rate obtained by standard bag-of-video-words approach. © 2013;MVA Organization. All rights reserved.

关键词： Textures

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Selecting sensor for on load tap changer contacts degree of wear diagnostics

Selecting sensor for on load tap changer contacts degree of ...

引用

作者： Cichoń, A. Boruckia, S. Bergerb, P. Faculty of Electrical Engineering Automatic Control and Computer Science Opole University of Technology Prószkowska 76 45-758 Opole Poland TurboCare Poland S.A. Powstańców slĄskich 85 42-701 Lubliniec Poland

Results of scientific research works considering selection of measuring transducer applied for registration of acoustic emission signals generated by on load tap changers are presented in the paper. During the coupling process acoustic emission signals are generated by: the mechanical setup of tap changer, contacts operation, and other phenomena. For most on load tap changers types, the working medium is insulation oil in which the acoustic wave being formed propagates to the steal tank. There exists a possibility to register acoustic emission signals with a piezoelectric transducer attached to the outer tank surface or with a hydrophone immersed in the oil. Acoustic emission signal obtained in such manner contains information which describes operation of the power tap changer and the selector. A comparative analysis of acoustic emission signals generated by on load tap changers working under laboratory conditions, with applied measuring transducers with different transmittances, is presented in the paper. The comparative analysis was performed in order to determine their suitability for on load tap changers technical condition diagnosis. Based on the results achieved, one transducer which allows the registration of acoustic events generated during on load tap changers operation was selected.

关键词： Tanks (containers)

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Estimation of nonstationary harmonic signals and its application to active control of MRI noise

Estimation of nonstationary harmonic signals and its applica...

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Maciej Niedźwiecki Michał Meller Yoshinobu Kajikawa Dawid Łukwiński Faculty of Electronics Telecommunications and Computer Science Department of Automatic Control Gdańsk University of Technology Gdansk Poland Department of Electrical and Electronic Engineering Faculty of Engineering Science Kansai University Suita Osaka Japan

A new adaptive comb filtering algorithm, capable of tracking the fundamental frequency and amplitudes of different frequency components of a nonstationary harmonic signal embedded in white measurement noise, is proposed. Frequency tracking characteristics of the new scheme are studied analytically, proving (under Gaussian assumptions and optimal tuning) its statistical efficiency for quasi-linear frequency changes. Laboratory tests show that the proposed algorithm can be successfully used for active control of MRI noise.

关键词： Noise Harmonic analysis Magnetic resonance imaging Adaptation models Signal processing algorithms Estimation Power harmonic filters

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