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  Subjects -> COMPUTER SCIENCE (Total: 1991 journals)
    - ANIMATION AND SIMULATION (29 journals)
    - ARTIFICIAL INTELLIGENCE (98 journals)
    - AUTOMATION AND ROBOTICS (98 journals)
    - CLOUD COMPUTING AND NETWORKS (61 journals)
    - COMPUTER ARCHITECTURE (9 journals)
    - COMPUTER ENGINEERING (9 journals)
    - COMPUTER GAMES (16 journals)
    - COMPUTER PROGRAMMING (24 journals)
    - COMPUTER SCIENCE (1158 journals)
    - COMPUTER SECURITY (45 journals)
    - DATA BASE MANAGEMENT (13 journals)
    - DATA MINING (32 journals)
    - E-BUSINESS (22 journals)
    - E-LEARNING (29 journals)
    - ELECTRONIC DATA PROCESSING (21 journals)
    - IMAGE AND VIDEO PROCESSING (39 journals)
    - INFORMATION SYSTEMS (105 journals)
    - INTERNET (91 journals)
    - SOCIAL WEB (50 journals)
    - SOFTWARE (34 journals)
    - THEORY OF COMPUTING (8 journals)

COMPUTER SCIENCE (1158 journals)                  1 2 3 4 5 6 | Last

Showing 1 - 200 of 872 Journals sorted alphabetically
3D Printing and Additive Manufacturing     Full-text available via subscription   (Followers: 13)
Abakós     Open Access   (Followers: 4)
ACM Computing Surveys     Hybrid Journal   (Followers: 22)
ACM Journal on Computing and Cultural Heritage     Hybrid Journal   (Followers: 9)
ACM Journal on Emerging Technologies in Computing Systems     Hybrid Journal   (Followers: 13)
ACM Transactions on Accessible Computing (TACCESS)     Hybrid Journal   (Followers: 3)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 16)
ACM Transactions on Applied Perception (TAP)     Hybrid Journal   (Followers: 6)
ACM Transactions on Architecture and Code Optimization (TACO)     Hybrid Journal   (Followers: 9)
ACM Transactions on Autonomous and Adaptive Systems (TAAS)     Hybrid Journal   (Followers: 7)
ACM Transactions on Computation Theory (TOCT)     Hybrid Journal   (Followers: 12)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 4)
ACM Transactions on Computer Systems (TOCS)     Hybrid Journal   (Followers: 18)
ACM Transactions on Computer-Human Interaction     Hybrid Journal   (Followers: 13)
ACM Transactions on Computing Education (TOCE)     Hybrid Journal   (Followers: 4)
ACM Transactions on Design Automation of Electronic Systems (TODAES)     Hybrid Journal   (Followers: 1)
ACM Transactions on Economics and Computation     Hybrid Journal  
ACM Transactions on Embedded Computing Systems (TECS)     Hybrid Journal   (Followers: 4)
ACM Transactions on Information Systems (TOIS)     Hybrid Journal   (Followers: 20)
ACM Transactions on Intelligent Systems and Technology (TIST)     Hybrid Journal   (Followers: 8)
ACM Transactions on Interactive Intelligent Systems (TiiS)     Hybrid Journal   (Followers: 3)
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)     Hybrid Journal   (Followers: 10)
ACM Transactions on Reconfigurable Technology and Systems (TRETS)     Hybrid Journal   (Followers: 7)
ACM Transactions on Sensor Networks (TOSN)     Hybrid Journal   (Followers: 8)
ACM Transactions on Speech and Language Processing (TSLP)     Hybrid Journal   (Followers: 11)
ACM Transactions on Storage     Hybrid Journal  
ACS Applied Materials & Interfaces     Full-text available via subscription   (Followers: 25)
Acta Automatica Sinica     Full-text available via subscription   (Followers: 3)
Acta Universitatis Cibiniensis. Technical Series     Open Access  
Ad Hoc Networks     Hybrid Journal   (Followers: 11)
Adaptive Behavior     Hybrid Journal   (Followers: 11)
Advanced Engineering Materials     Hybrid Journal   (Followers: 26)
Advanced Science Letters     Full-text available via subscription   (Followers: 8)
Advances in Adaptive Data Analysis     Hybrid Journal   (Followers: 8)
Advances in Artificial Intelligence     Open Access   (Followers: 16)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 15)
Advances in Computer Science : an International Journal     Open Access   (Followers: 14)
Advances in Computing     Open Access   (Followers: 2)
Advances in Data Analysis and Classification     Hybrid Journal   (Followers: 51)
Advances in Engineering Software     Hybrid Journal   (Followers: 25)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 10)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 26)
Advances in Human-Computer Interaction     Open Access   (Followers: 20)
Advances in Materials Sciences     Open Access   (Followers: 16)
Advances in Operations Research     Open Access   (Followers: 11)
Advances in Parallel Computing     Full-text available via subscription   (Followers: 7)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Remote Sensing     Open Access   (Followers: 37)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Advances in Technology Innovation     Open Access   (Followers: 2)
AEU - International Journal of Electronics and Communications     Hybrid Journal   (Followers: 8)
African Journal of Information and Communication     Open Access   (Followers: 8)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 4)
Air, Soil & Water Research     Open Access   (Followers: 9)
AIS Transactions on Human-Computer Interaction     Open Access   (Followers: 6)
Algebras and Representation Theory     Hybrid Journal   (Followers: 1)
Algorithms     Open Access   (Followers: 11)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 4)
American Journal of Computational Mathematics     Open Access   (Followers: 4)
American Journal of Information Systems     Open Access   (Followers: 7)
American Journal of Sensor Technology     Open Access   (Followers: 4)
Anais da Academia Brasileira de Ciências     Open Access   (Followers: 2)
Analog Integrated Circuits and Signal Processing     Hybrid Journal   (Followers: 7)
Analysis in Theory and Applications     Hybrid Journal   (Followers: 1)
Animation Practice, Process & Production     Hybrid Journal   (Followers: 5)
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Data Science     Hybrid Journal   (Followers: 11)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 7)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of Software Engineering     Hybrid Journal   (Followers: 12)
Annual Reviews in Control     Hybrid Journal   (Followers: 6)
Anuario Americanista Europeo     Open Access  
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applied and Computational Harmonic Analysis     Full-text available via subscription   (Followers: 2)
Applied Artificial Intelligence: An International Journal     Hybrid Journal   (Followers: 14)
Applied Categorical Structures     Hybrid Journal   (Followers: 2)
Applied Clinical Informatics     Hybrid Journal   (Followers: 2)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 12)
Applied Computer Systems     Open Access   (Followers: 1)
Applied Informatics     Open Access  
Applied Mathematics and Computation     Hybrid Journal   (Followers: 33)
Applied Medical Informatics     Open Access   (Followers: 11)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Soft Computing     Hybrid Journal   (Followers: 16)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
Architectural Theory Review     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 5)
Archive of Numerical Software     Open Access  
Archives and Museum Informatics     Hybrid Journal   (Followers: 132)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4)
Artifact     Hybrid Journal   (Followers: 2)
Artificial Life     Hybrid Journal   (Followers: 6)
Asia Pacific Journal on Computational Engineering     Open Access  
Asia-Pacific Journal of Information Technology and Multimedia     Open Access   (Followers: 1)
Asian Journal of Computer Science and Information Technology     Open Access  
Asian Journal of Control     Hybrid Journal  
Assembly Automation     Hybrid Journal   (Followers: 2)
at - Automatisierungstechnik     Hybrid Journal   (Followers: 1)
Australian Educational Computing     Open Access   (Followers: 1)
Automatic Control and Computer Sciences     Hybrid Journal   (Followers: 4)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Automatica     Hybrid Journal   (Followers: 11)
Automation in Construction     Hybrid Journal   (Followers: 6)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Basin Research     Hybrid Journal   (Followers: 5)
Behaviour & Information Technology     Hybrid Journal   (Followers: 52)
Bioinformatics     Hybrid Journal   (Followers: 302)
Biomedical Engineering     Hybrid Journal   (Followers: 16)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 13)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 17)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 32)
Briefings in Bioinformatics     Hybrid Journal   (Followers: 45)
British Journal of Educational Technology     Hybrid Journal   (Followers: 128)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 10)
c't Magazin fuer Computertechnik     Full-text available via subscription   (Followers: 2)
CALCOLO     Hybrid Journal  
Calphad     Hybrid Journal  
Canadian Journal of Electrical and Computer Engineering     Full-text available via subscription   (Followers: 14)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal  
Cell Communication and Signaling     Open Access   (Followers: 1)
Central European Journal of Computer Science     Hybrid Journal   (Followers: 5)
CERN IdeaSquare Journal of Experimental Innovation     Open Access  
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 15)
ChemSusChem     Hybrid Journal   (Followers: 7)
China Communications     Full-text available via subscription   (Followers: 7)
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
CIN Computers Informatics Nursing     Full-text available via subscription   (Followers: 12)
Circuits and Systems     Open Access   (Followers: 16)
Clean Air Journal     Full-text available via subscription   (Followers: 2)
CLEI Electronic Journal     Open Access  
Clin-Alert     Hybrid Journal   (Followers: 1)
Cluster Computing     Hybrid Journal   (Followers: 1)
Cognitive Computation     Hybrid Journal   (Followers: 4)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 13)
Communication Methods and Measures     Hybrid Journal   (Followers: 12)
Communication Theory     Hybrid Journal   (Followers: 20)
Communications Engineer     Hybrid Journal   (Followers: 1)
Communications in Algebra     Hybrid Journal   (Followers: 3)
Communications in Partial Differential Equations     Hybrid Journal   (Followers: 3)
Communications of the ACM     Full-text available via subscription   (Followers: 53)
Communications of the Association for Information Systems     Open Access   (Followers: 18)
COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering     Hybrid Journal   (Followers: 3)
Complex & Intelligent Systems     Open Access  
Complex Adaptive Systems Modeling     Open Access  
Complex Analysis and Operator Theory     Hybrid Journal   (Followers: 2)
Complexity     Hybrid Journal   (Followers: 6)
Complexus     Full-text available via subscription  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Computación y Sistemas     Open Access  
Computation     Open Access  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 2)
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational and Structural Biotechnology Journal     Open Access   (Followers: 2)
Computational and Theoretical Chemistry     Hybrid Journal   (Followers: 9)
Computational Astrophysics and Cosmology     Open Access   (Followers: 1)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 12)
Computational Chemistry     Open Access   (Followers: 2)
Computational Cognitive Science     Open Access   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Condensed Matter     Open Access  
Computational Ecology and Software     Open Access   (Followers: 9)
Computational Economics     Hybrid Journal   (Followers: 9)
Computational Geosciences     Hybrid Journal   (Followers: 14)
Computational Linguistics     Open Access   (Followers: 23)
Computational Management Science     Hybrid Journal  
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 8)
Computational Mechanics     Hybrid Journal   (Followers: 4)
Computational Methods and Function Theory     Hybrid Journal  
Computational Molecular Bioscience     Open Access   (Followers: 2)
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computational Particle Mechanics     Hybrid Journal   (Followers: 1)
Computational Research     Open Access   (Followers: 1)
Computational Science and Discovery     Full-text available via subscription   (Followers: 2)
Computational Science and Techniques     Open Access  
Computational Statistics     Hybrid Journal   (Followers: 13)
Computational Statistics & Data Analysis     Hybrid Journal   (Followers: 31)
Computer     Full-text available via subscription   (Followers: 87)
Computer Aided Surgery     Hybrid Journal   (Followers: 3)
Computer Applications in Engineering Education     Hybrid Journal   (Followers: 7)
Computer Communications     Hybrid Journal   (Followers: 10)
Computer Engineering and Applications Journal     Open Access   (Followers: 5)
Computer Journal     Hybrid Journal   (Followers: 7)
Computer Methods in Applied Mechanics and Engineering     Hybrid Journal   (Followers: 22)
Computer Methods in Biomechanics and Biomedical Engineering     Hybrid Journal   (Followers: 10)
Computer Methods in the Geosciences     Full-text available via subscription   (Followers: 1)
Computer Music Journal     Hybrid Journal   (Followers: 16)
Computer Physics Communications     Hybrid Journal   (Followers: 6)
Computer Science - Research and Development     Hybrid Journal   (Followers: 7)
Computer Science and Engineering     Open Access   (Followers: 17)
Computer Science and Information Technology     Open Access   (Followers: 11)
Computer Science Education     Hybrid Journal   (Followers: 12)
Computer Science Journal     Open Access   (Followers: 20)
Computer Science Master Research     Open Access   (Followers: 10)
Computer Science Review     Hybrid Journal   (Followers: 10)

        1 2 3 4 5 6 | Last

Journal Cover Automatic Control and Computer Sciences
  [SJR: 0.23]   [H-I: 7]   [4 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1558-108X - ISSN (Online) 0146-4116
   Published by Springer-Verlag Homepage  [2352 journals]
  • Parallel method of production rules extraction based on computational
           intelligence
    • Authors: A. Oliinyk; S. Skrupsky; S. Subbotin; I. Korobiichuk
      Pages: 215 - 223
      Abstract: The problem of production rules extraction has been solved based on parallel computing and computational intelligence. The research object is the process of production rules extraction. The purpose of the work is the creation of the production rules extraction method, based on a parallel principle of the construction of the intelligent models, which bring together given data samples in the form of the models based on the decision trees, association rules and negative selection. The developed method allow to significantly reduce the time required for the models synthesis when solving the complex practical problems, characterized by a large amount of the diagnostic data; and the problems, where there is a need to modify the existing diagnostic and recognition models due to the appearance of new information, which is the result of the permanent observation after the state of the research objects and processes. At the same time, the capability of the synthesis of the models that have the high approximating and generalizing abilities is provided.
      PubDate: 2017-07-01
      DOI: 10.3103/s0146411617040058
      Issue No: Vol. 51, No. 4 (2017)
       
  • Efficient determination of a finite set of states for an up-and-down
           process possessing a practical closure
    • Authors: A. Lorencs; V. Plocins
      Pages: 224 - 232
      Abstract: Conditions at which the up-and-down process with a step greater than 0.5 of the standard deviation of masking noise becomes practically closed on a finite set are investigated, e.g., the sufficient number of states of up-and-down process is determined so that the probability of obtaining other states is practically equal to zero. For this purpose, several lemmas on growth of the cumulative distribution function of standard normal distribution are proved. Formulas for a recursive calculation of the probability of obtaining the state of up-and-down process are obtained. Using them, an upper bound for obtaining other up-and-down process states is given.
      PubDate: 2017-07-01
      DOI: 10.3103/s0146411617040034
      Issue No: Vol. 51, No. 4 (2017)
       
  • Control on the transmission of computer viruses in network
    • Authors: Chunqing Han; Lin Li
      Pages: 233 - 239
      Abstract: This study made an inductive discussion on the definition and characteristics of computer viruses and analyzed virus transmission models as well as virus control. Like tumor cells in human body, computer viruses will rapidly transfer and disperse if they are not controlled, indicating a poor stability. To investigate the transmission control of computer viruses, a dynamical model was established for virus transmission and the concept of “equivalent day” was introduced to analyze the dynamic characteristics of discrete transfer of the model and the stability of virus-free equilibrium points and endemic equilibrium points. The characteristic value was obtained by calculating the equation of the model. Moreover, the necessary and sufficient conditions for virus-free and endemic equilibrium points of the model were obtained by proof using Lyapunov first method and disc theorem. Then the model was compared with SIS and SIR models. Finally, a control item was added based on the virus discrete transmission model and the transformation trends of the number of the infected principle machine and the infective principal machine before and after the addition of the control item were compared. In this way, the optimal control strategy for virus transmission model was designed and the effectiveness of the optimal control was verified.
      PubDate: 2017-07-01
      DOI: 10.3103/s0146411617040022
      Issue No: Vol. 51, No. 4 (2017)
       
  • Robust CHARM: an efficient data hosting scheme for cloud data storage
           system
    • Authors: M. Thangapandiyan; P. M. Rubesh Anand
      Pages: 240 - 247
      Abstract: Cloud computing is the recent evolving arena, which offers more benefits to cloud service providers and online users, compared to the traditional architecture. In this paper, an efficient data-hosting scheme with high availability for implementing over heterogeneous multi-cloud system is proposed. The proposed ROBUST CHARM (RCH) scheme is designed with data hosting, storage mode switching, speed mode and workload indicator modules. These modules process data with the support of heuristic and storage mode transition algorithm. The algorithm is proved efficient in identifying the apt cloud to store data. Storage transition is adopted by considering the cost and data access pattern of the data stored during any requirements. This evaluation enables efficient usage of cloud resources with high availability. The experimental results show that the proposed scheme works effectively without affecting the performance compared to the existing systems. The ability to utilize heterogeneous multi-cloud storage with the benefit of cost effectiveness is an added advantage to the cloud users.
      PubDate: 2017-07-01
      DOI: 10.3103/s0146411617040101
      Issue No: Vol. 51, No. 4 (2017)
       
  • Inspecting mixed textured lens collar images using discrete Fourier
           transformation
    • Authors: Ssu-Han Chen
      Pages: 248 - 253
      Abstract: Superficial and electroplating defects are the most commonly seen flaws on the lens collar. The former arose from cutter offset or chip winding during the cutting process, while the later occurred if the surface was stained with rough or foreign material during the electroplating process. Relying on human inspection to ensure quality of a lens collar was time consuming and accounted for occupational injury. Thus, implementation of automatic inspection technology became invertible in the mass production environment. Since the texture on the surface of lens collar was not only regular but also statistical, the system used image restoration based on discrete Fourier transformation (DFT) to detect defects embedding on those two types of textures.
      PubDate: 2017-07-01
      DOI: 10.3103/s0146411617040095
      Issue No: Vol. 51, No. 4 (2017)
       
  • HEVC intra coding using vote-based optimization algorithm
    • Authors: Ping Kuang; Jianhua Deng
      Pages: 254 - 262
      Abstract: We present a voted optimization algorithm utilizing correlation of adjacent frames’ texture feature and thoughts of voted selection for newly proposed video standard High Efficiency Video Coding (HEVC). In addition, a voted algorithm based on original candidate mode collection is developed, which use the candidate modes, to resolve HEVC Most Probable Mode (MPM) mechanism for intra prediction problem. Meanwhile, we perform the vote rules to cut down on candidate collection, which is based on our proposed voted method. Experimental results show that proposed voted algorithm improves the efficiency of encoder by decreasing encoding time with more than 20% and causes nearly negligible increment in bit-rate.
      PubDate: 2017-07-01
      DOI: 10.3103/s014641161704006x
      Issue No: Vol. 51, No. 4 (2017)
       
  • A novel method of medical image enhancement based on wavelet decomposition
    • Authors: Qinli Zhang; Shuting Shen; Xiaoyun Su; Qi Guo
      Pages: 263 - 269
      Abstract: The efficiency of image enhancement algorithms depends on the quality and processing speed of image enhancement. There are many algorithms to implement image enhancement using wavelet theory. These algorithms have one thing in common: they all capture image details by decomposing low frequency sub-images. In fact, a lot of details in high-frequency sub-images are also found. Enlightened by the above-mentioned facts, a novel medical image enhancement method based on wavelet decomposition is proposed by adding details from the high-frequency sub-images and decomposing the image specially with ant-symmetric biorthogonal wavelet instead of some traditional wavelets. It not only improves the image enhancement, but also overcomes the shortcomings of large computation with faster computational speed and satisfies the real-time requirement in edge detection. Simulation experiments of mammographic images are implemented by Matlab with several different methods, the results show that the proposed method is superior to some popular methods, such as histogram equalization and wavelet nonlinear enhancement.
      PubDate: 2017-07-01
      DOI: 10.3103/s0146411617040113
      Issue No: Vol. 51, No. 4 (2017)
       
  • Parametric identification for perturbed paths of navigation satellites
           based on inter-satellite measurements
    • Authors: S. V. Sokolov; S. M. Kovalev; A. V. Sukhanov
      Pages: 270 - 278
      Abstract: A solution for the problem of stochastic identification of the parameters of perturbed orthodromic orbits of navigation satellites is given. The identification is proposed directly on the board of a satellite based on inter-satellite radio and laser measurements. It is shown that the solution accuracy of the navigation task is increased in comparison with telemetric measurements. The approach is shown to be invariant for other aerospace moving objects because of its invariant parameters. Also, an explaining example is given for comprehensive description of the proposed approach.
      PubDate: 2017-07-01
      DOI: 10.3103/s0146411617040083
      Issue No: Vol. 51, No. 4 (2017)
       
  • Impulse response approximation of digital finite impulse response filter
           with delay line units
    • Authors: D. Skripniks; S. Sarkovskis; A. Yershov; E. Grab
      Pages: 279 - 284
      Abstract: This article proposes special digital filtering structures formed by one multiplier, one adder and a delay line. Such structures can be used to synthesize finite impulse response Hilbert filter. The advantage of such approach is reduced number of multipliers, compared to standard implementation. The quotients of structures can be calculated by local optimization methods. This article shows an example of the 30-th order Hilbert filter calculation, which requires only 6 multipliers for implementation.
      PubDate: 2017-07-01
      DOI: 10.3103/s0146411617040071
      Issue No: Vol. 51, No. 4 (2017)
       
  • Estimation of stability of oscillations of linear time-varying systems
           with one time-varying parameter with calculation of influence of higher
           frequency motions
    • Authors: A. V. Mandrik
      Pages: 141 - 148
      Abstract: The paper reveals a new method for estimation of stability of oscillations of linear time invariant systems with one time-varying parameter given by a harmonic function. The suggested approach includes building a matrix of transfer functions, which calculates interference of the highfrequency oscillations of the output of the linear time-invariant part of the system. Suggested approach makes possible to build equivalent of the Nyquist criterion for linear systems with a single time-varying parameter. The application of the suggested approach is shown by numerical examples. Results of the present article may be used for control systems of cranes and other lifting mechanisms.
      PubDate: 2017-05-01
      DOI: 10.3103/s0146411617030075
      Issue No: Vol. 51, No. 3 (2017)
       
  • Detection of abnormal traffic video images based on high-dimensional fuzzy
           geometry
    • Authors: Lei Huang; Zhongsheng Li; Benliang Wang
      Pages: 149 - 158
      Abstract: Detection of abnormal video images of transportation is to find out video images that contain abnormities among all images of transportation using video and image processing and analyzing techniques. It is an important component of intelligent transportation system, which can not only reduce the workload of traffic managers, but also effectively improve the efficiency of traffic management. However, video images of transportation in practice usually have complex backgrounds, and current detecting algorithms of traffic abnormity sometimes become ineffective due to interference factors such as noises and affine transformation (illumination variation, target occlusion, scale changes and view changes, etc.). In order to overcome these interference factors and fuzzy uncertainties in image representation, as well as improve the accuracy of traffic images representation, this study explored the representation methods of traffic images using fuzzy geometry theory on the basis of fuzzy uncertainties occurring during the process of imaging, transmission and processing of images; moreover, this study also put forward two kinds of representation algorithms of traffic images, and analyzed and verified effectiveness of representation algorithms based on theories and experiments.
      PubDate: 2017-05-01
      DOI: 10.3103/s014641161703004x
      Issue No: Vol. 51, No. 3 (2017)
       
  • Efficient key insulated attribute based signature without bilinear
           pairings for mobile communications
    • Authors: Hanshu Hong; Zhixin Sun
      Pages: 159 - 166
      Abstract: Attribute based signature (ABS) is a significant cryptographic notion providing secure authentication during data sharing. A signer can sign a message using the private keys he processes. However, user’s private key exposure may happen from time to time and this will bring potential threat to the whole system. Thus, key evolving mechanism should be introduced into ABS schemes. Besides, the efficiency of existing ABS schemes can be further improved since the process of signing and verification require massive bilinear pairings, which occupies costly computing resources on mobile terminal devices. To better tackle the above problems and provides a more secure data authentication method in mobile communication systems, in this paper, we firstly propose a key insulated attribute based signature scheme without pairings (KI-ABS-WP). Then we give the formalized definition as well as the concreted constructions of our scheme. In our KI-ABS-WP, uses needn’t run any bilinear pairings, thus the total computation cost has been reduced to a large extent. If key exposure occurs, key insulation mechanism guarantees system’s both backward and forward security. Finally, by security proof and efficiency comparison, our KI-ABS-WP is shown to be more superior for data authentication in mobile communication systems.
      PubDate: 2017-05-01
      DOI: 10.3103/s0146411617030038
      Issue No: Vol. 51, No. 3 (2017)
       
  • Error correction of digital signal processing devices using non-positional
           modular codes
    • Authors: D. I. Kaplun; D. M. Klionskiy; D. V. Bogaevskiy; V. V. Gulvanskiy; A. V. Veligosha; I. A. Kalmykov
      Pages: 167 - 173
      Abstract: The paper discusses an algorithm for correcting code errors of the residue number system using a positional characteristic. Application of parallel-pipeline computations of this positional characteristic allows us to reduce hardware costs by 7.2% for processing 2-byte data represented in a residue number system code. The main properties of codes allow us to provide the required fault-tolerance for multi-rate DSP devices. The results provided in the paper can be applied to hydroacoustic monitoring tasks.
      PubDate: 2017-05-01
      DOI: 10.3103/s0146411617030051
      Issue No: Vol. 51, No. 3 (2017)
       
  • The detection of Udpstorm attacks based on model checking linear temporal
           logic
    • Authors: Miaolei Deng; Kai Nie; Weijun Zhu; Chunyan Zhang
      Pages: 174 - 179
      Abstract: The intrusion detection based on model checking temporal logic is effective in detecting the complicated and variable network attacks. However, certain types of attacks remain undetected due to the lack of formal models. To solve this problem, a linear temporal logic is employed to model the variable patterns of Udpstorm attacks. First, an analysis of the principles of Udpstorm attacks is given and the details of these attacks are transformed into atomic actions. The atomic actions are then transformed into action sequence. Finally, this type of attacks is expressed in Linear Temporal Logic (LTL) formulas. With the formula thus obstained used as one input of the model checker and the automaton, which expresses the log, used as the other input of the model checker, the results of intrusion detection can be obtained by conducting the LTL model checking algorithm. The effectiveness and the comparative advantages of the new algorithm are verified by the simulation experiments.
      PubDate: 2017-05-01
      DOI: 10.3103/s0146411617030026
      Issue No: Vol. 51, No. 3 (2017)
       
  • Scene-specific pedestrian detection based on transfer learning and
           saliency detection for video surveillance
    • Authors: Weiwei Xing; Pingping Bai; Shunli Zhang; Peng Bao
      Pages: 180 - 192
      Abstract: Pedestrian detection is a fundamental problem in video surveillance and has achieved great progress in recent years. However the performance of a generic pedestrian detector trained on some public datasets drops significantly when it is applied to some specific scenes due to the difference between source training samples and pedestrian samples in target scenes. We propose a novel transfer learning framework, which automatically transfers a generic detector to a scene-specific pedestrian detector without manually labeling training samples from target scenes. In our method, we get initial detected results and several cues are used to filter target templates whose labels we are sure about from the initial detected results. Gaussian mixture model (GMM) is used to get the motion areas in each video frame and some other target samples. The relevancy between target samples and target templates and the relevancy between source samples and target templates are estimated by sparse coding and later used to calculate the weights for source samples and target samples. Saliency detection is an essential work before the relevancy computing between source samples and target templates for eliminating interference of non-salient region. We demonstrate the effectiveness of our scene-specific detector on a public dataset, and compare with the generic detector. Detection rates improves significantly, and also it is comparable with the detector trained by a lot of manually labeled samples from the target scene.
      PubDate: 2017-05-01
      DOI: 10.3103/s0146411617030099
      Issue No: Vol. 51, No. 3 (2017)
       
  • Multi-cue based moving hand segmentation for gesture recognition
    • Authors: Jia Lin; Xiaogang Ruan; Naigong Yu; Jianxian Cai
      Pages: 193 - 203
      Abstract: This paper proposes a novel moving hand segmentation approach using skin color, grayscale, depth, and motion cues for gesture recognition. The proposed approach does not depend on unreasonable restrictions, and it can solve the problem of hand-over-face occlusion. First, an online updated skin color histogram (OUSCH) model is built to robustly represent skin color; second, according to the variance information of grayscale and depth optical flow, a motion region of interest (MRoI) is adaptively extracted to locate the moving body part (MBP) and reduce the impact of noise; then, Harris-Affine corners that satisfy skin color and adaptive motion constraints are adopted as skin seed points in the MRoI; next, the skin seed points are grown to obtain a candidate hand region utilizing skin color, depth and motion criteria; finally, boundary depth gradient, skeleton extraction, and shortest path search are employed to segment the moving hand region from the candidate hand region. Experimental results demonstrate that the proposed approach can accurately segment moving hand regions under different situations, especially when the face is occluded by a hand. Furthermore, this approach achieves higher segmentation accuracy than other state-of-the-art approaches.
      PubDate: 2017-05-01
      DOI: 10.3103/s0146411617030063
      Issue No: Vol. 51, No. 3 (2017)
       
  • Development and realization of embedded car networking vehicle terminal
           software system
    • Authors: Feng Tan
      Pages: 204 - 213
      Abstract: As China’s economy develops vigorously, people’s living quality has been greatly improved and its car ownership has been increasing day by day. Consequently, traffic jams and safety problems become more and more severe. To solve these problems, the idea of car networking system construction has been put forward based on the improvement of Internet of Things and computer technologies. However, the vehicle terminals produced by many automobile manufacturers has disadvantages, such as incomplete functions, incompatible interface and exorbitant costs, etc. Therefore, based on the concept of car networking as well as the new 4G network technique, this study designed a kind of embedded car networking vehicle terminal and analyzed its hardware structure and installation problems. Moreover, its function of boot load program was extended and a software development platform of the embedded vehicle terminal based on Linux core was constructed. On the basis of the software and hardware environment construction, the global position system (GPS) and ZigBee wireless transmission software of the vehicle terminal were designed. In addition, the realization of the function of serial port communication was elaborated, and the development and realization of the embedded car networking vehicle terminal software system were explored.
      PubDate: 2017-05-01
      DOI: 10.3103/s0146411617030087
      Issue No: Vol. 51, No. 3 (2017)
       
  • Guaranteed-result strategy to synthesize a decentralized control for
           systems under parametric perturbations
    • Authors: V. N. Shashihin
      Pages: 75 - 84
      Abstract: This paper describes a technique to synthesize robust control for a large-scale system under parametric perturbations. The control law designed provides the guaranteed quality of transient processes under the worst parametric perturbation admissible. The problem is solved based on the required minimax conditions. A modified performance criterion is employed that allows the computational cost of decentralized control synthesis to be reduced significantly.
      PubDate: 2017-03-01
      DOI: 10.3103/s0146411617020079
      Issue No: Vol. 51, No. 2 (2017)
       
  • Determining PID controller coefficients for the moving motor of a welder
           robot using fuzzy logic
    • Authors: Alireza Rezaee
      Pages: 124 - 132
      Abstract: In this paper, a fuzzy algorithm was used for determining the coefficients of a PID controller using an online method. The plant used in this system is a welder robot, which is used for welding oil and gas pipelines. This robot rest on the pipe and weld it by moving around. The speed is adjusted using a motor moving the robot around the pipe. A digital controller also used for implementation. In this research, in order to choose the rules the skills transmit method and that how the PID response is required has been used. In this paper, the type of algorithms that continuously assigns PID coefficients using an online method depending on the characteristics of the system which is based on fuzzy logic was used. First, the rules associated to each output in relation to inputs are depicted in it. Using the mentioned method, simulation results and then implementation results were obtained and discussed.
      PubDate: 2017-03-01
      DOI: 10.3103/s0146411617020067
      Issue No: Vol. 51, No. 2 (2017)
       
  • Ultrasonic elastography optimization algorithm based on coded excitation
           and spatial compounding
    • Authors: Zhihong Zhang; Limiao Li; Huafu Liu
      Pages: 133 - 140
      Abstract: Traditional elasticity imaging systems use short pulses with low sound power, causing the signal to be attenuated severely in deep zones. On the basis of the coded excitation and spatial composition theorems, an ultrasonic elastography optimization algorithm is proposed in this paper. It takes advantage of coded excitation and spatial compounding such as high peak power and average sound power, suppresses speckle noise, and improves the imaging quality effectively. Specifically, a coded excitation system encodes the long pulses when transmitting, and then decodes the long pulses into short pulses upon receiving. This increases the average sound power of the beam without sacrificing the spatial resolution. A imaging system based on coded excitation can therefore achieve a good signal-to-noise ratio (SNR e ) and contrast-to-noise ratio (CNR e ) in deep zones below the detection surface. The proposed algorithm combines coded excitation with a filter-group based spatial compounding algorithm at the receiving terminal. Finally, experimental results show that the proposed algorithm yields a higher SNR e and CNR e than using chirp coded excitation or spatial compounding alone.
      PubDate: 2017-03-01
      DOI: 10.3103/s0146411617020080
      Issue No: Vol. 51, No. 2 (2017)
       
 
 
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