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Publisher: Oxford University Press   (Total: 372 journals)

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Showing 1 - 200 of 372 Journals sorted alphabetically
Acta Biochimica et Biophysica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.881, h-index: 38)
Adaptation     Hybrid Journal   (Followers: 8, SJR: 0.111, h-index: 4)
Aesthetic Surgery J.     Hybrid Journal   (Followers: 6, SJR: 1.538, h-index: 35)
African Affairs     Hybrid Journal   (Followers: 65, SJR: 1.512, h-index: 46)
Age and Ageing     Hybrid Journal   (Followers: 86, SJR: 1.611, h-index: 107)
Alcohol and Alcoholism     Hybrid Journal   (Followers: 18, SJR: 0.935, h-index: 80)
American Entomologist     Full-text available via subscription   (Followers: 6)
American Historical Review     Hybrid Journal   (Followers: 143, SJR: 0.652, h-index: 43)
American J. of Agricultural Economics     Hybrid Journal   (Followers: 39, SJR: 1.441, h-index: 77)
American J. of Epidemiology     Hybrid Journal   (Followers: 166, SJR: 3.047, h-index: 201)
American J. of Hypertension     Hybrid Journal   (Followers: 25, SJR: 1.397, h-index: 111)
American J. of Jurisprudence     Hybrid Journal   (Followers: 18)
American J. of Legal History     Full-text available via subscription   (Followers: 9, SJR: 0.151, h-index: 7)
American Law and Economics Review     Hybrid Journal   (Followers: 28, SJR: 0.824, h-index: 23)
American Literary History     Hybrid Journal   (Followers: 15, SJR: 0.185, h-index: 22)
Analysis     Hybrid Journal   (Followers: 21)
Annals of Botany     Hybrid Journal   (Followers: 35, SJR: 1.912, h-index: 124)
Annals of Occupational Hygiene     Hybrid Journal   (Followers: 29, SJR: 0.837, h-index: 57)
Annals of Oncology     Hybrid Journal   (Followers: 48, SJR: 4.362, h-index: 173)
Annals of the Entomological Society of America     Full-text available via subscription   (Followers: 8, SJR: 0.642, h-index: 53)
Annals of Work Exposures and Health     Hybrid Journal  
AoB Plants     Open Access   (Followers: 4, SJR: 0.78, h-index: 10)
Applied Economic Perspectives and Policy     Hybrid Journal   (Followers: 17, SJR: 0.884, h-index: 31)
Applied Linguistics     Hybrid Journal   (Followers: 55, SJR: 1.749, h-index: 63)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1, SJR: 0.779, h-index: 11)
Arbitration Intl.     Full-text available via subscription   (Followers: 19)
Arbitration Law Reports and Review     Hybrid Journal   (Followers: 13)
Archives of Clinical Neuropsychology     Hybrid Journal   (Followers: 30, SJR: 0.96, h-index: 71)
Aristotelian Society Supplementary Volume     Hybrid Journal   (Followers: 3, SJR: 0.102, h-index: 20)
Arthropod Management Tests     Hybrid Journal   (Followers: 2)
Astronomy & Geophysics     Hybrid Journal   (Followers: 46, SJR: 0.144, h-index: 15)
Behavioral Ecology     Hybrid Journal   (Followers: 51, SJR: 1.698, h-index: 92)
Bioinformatics     Hybrid Journal   (Followers: 281, SJR: 4.643, h-index: 271)
Biology Methods and Protocols     Hybrid Journal  
Biology of Reproduction     Full-text available via subscription   (Followers: 9, SJR: 1.646, h-index: 149)
Biometrika     Hybrid Journal   (Followers: 20, SJR: 2.801, h-index: 90)
BioScience     Hybrid Journal   (Followers: 30, SJR: 2.374, h-index: 154)
Bioscience Horizons : The National Undergraduate Research J.     Open Access   (Followers: 1, SJR: 0.213, h-index: 9)
Biostatistics     Hybrid Journal   (Followers: 17, SJR: 1.955, h-index: 55)
BJA : British J. of Anaesthesia     Hybrid Journal   (Followers: 159, SJR: 2.314, h-index: 133)
BJA Education     Hybrid Journal   (Followers: 64, SJR: 0.272, h-index: 20)
Brain     Hybrid Journal   (Followers: 68, SJR: 6.097, h-index: 264)
Briefings in Bioinformatics     Hybrid Journal   (Followers: 43, SJR: 4.086, h-index: 73)
Briefings in Functional Genomics     Hybrid Journal   (Followers: 3, SJR: 1.771, h-index: 50)
British J. for the Philosophy of Science     Hybrid Journal   (Followers: 33, SJR: 1.267, h-index: 38)
British J. of Aesthetics     Hybrid Journal   (Followers: 26, SJR: 0.217, h-index: 18)
British J. of Criminology     Hybrid Journal   (Followers: 577, SJR: 1.373, h-index: 62)
British J. of Social Work     Hybrid Journal   (Followers: 86, SJR: 0.771, h-index: 53)
British Medical Bulletin     Hybrid Journal   (Followers: 7, SJR: 1.391, h-index: 84)
British Yearbook of Intl. Law     Hybrid Journal   (Followers: 30)
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 4, SJR: 1.474, h-index: 31)
Cambridge J. of Economics     Hybrid Journal   (Followers: 61, SJR: 0.957, h-index: 59)
Cambridge J. of Regions, Economy and Society     Hybrid Journal   (Followers: 9, SJR: 1.067, h-index: 22)
Cambridge Quarterly     Hybrid Journal   (Followers: 9, SJR: 0.1, h-index: 7)
Capital Markets Law J.     Hybrid Journal   (Followers: 2)
Carcinogenesis     Hybrid Journal   (Followers: 2, SJR: 2.439, h-index: 167)
Cardiovascular Research     Hybrid Journal   (Followers: 12, SJR: 2.897, h-index: 175)
Cerebral Cortex     Hybrid Journal   (Followers: 44, SJR: 4.827, h-index: 192)
CESifo Economic Studies     Hybrid Journal   (Followers: 17, SJR: 0.501, h-index: 19)
Chemical Senses     Hybrid Journal   (Followers: 1, SJR: 1.436, h-index: 76)
Children and Schools     Hybrid Journal   (Followers: 5, SJR: 0.211, h-index: 18)
Chinese J. of Comparative Law     Hybrid Journal   (Followers: 4)
Chinese J. of Intl. Law     Hybrid Journal   (Followers: 22, SJR: 0.737, h-index: 11)
Chinese J. of Intl. Politics     Hybrid Journal   (Followers: 8, SJR: 1.238, h-index: 15)
Christian Bioethics: Non-Ecumenical Studies in Medical Morality     Hybrid Journal   (Followers: 10, SJR: 0.191, h-index: 8)
Classical Receptions J.     Hybrid Journal   (Followers: 25, SJR: 0.1, h-index: 3)
Clinical Infectious Diseases     Hybrid Journal   (Followers: 62, SJR: 4.742, h-index: 261)
Clinical Kidney J.     Open Access   (Followers: 3, SJR: 0.338, h-index: 19)
Community Development J.     Hybrid Journal   (Followers: 27, SJR: 0.47, h-index: 28)
Computer J.     Hybrid Journal   (Followers: 9, SJR: 0.371, h-index: 47)
Conservation Physiology     Open Access   (Followers: 2)
Contemporary Women's Writing     Hybrid Journal   (Followers: 9, SJR: 0.111, h-index: 3)
Contributions to Political Economy     Hybrid Journal   (Followers: 5, SJR: 0.313, h-index: 10)
Critical Values     Full-text available via subscription  
Current Legal Problems     Hybrid Journal   (Followers: 27)
Current Zoology     Full-text available via subscription   (Followers: 1, SJR: 0.999, h-index: 20)
Database : The J. of Biological Databases and Curation     Open Access   (Followers: 8, SJR: 1.068, h-index: 24)
Digital Scholarship in the Humanities     Hybrid Journal   (Followers: 13)
Diplomatic History     Hybrid Journal   (Followers: 19, SJR: 0.296, h-index: 22)
DNA Research     Open Access   (Followers: 5, SJR: 2.42, h-index: 77)
Dynamics and Statistics of the Climate System     Open Access   (Followers: 3)
Early Music     Hybrid Journal   (Followers: 15, SJR: 0.124, h-index: 11)
Economic Policy     Hybrid Journal   (Followers: 39, SJR: 2.052, h-index: 52)
ELT J.     Hybrid Journal   (Followers: 25, SJR: 1.26, h-index: 23)
English Historical Review     Hybrid Journal   (Followers: 51, SJR: 0.311, h-index: 10)
English: J. of the English Association     Hybrid Journal   (Followers: 14, SJR: 0.144, h-index: 3)
Environmental Entomology     Full-text available via subscription   (Followers: 11, SJR: 0.791, h-index: 66)
Environmental Epigenetics     Open Access   (Followers: 3)
Environmental History     Hybrid Journal   (Followers: 26, SJR: 0.197, h-index: 25)
EP-Europace     Hybrid Journal   (Followers: 2, SJR: 2.201, h-index: 71)
Epidemiologic Reviews     Hybrid Journal   (Followers: 9, SJR: 3.917, h-index: 81)
ESHRE Monographs     Hybrid Journal  
Essays in Criticism     Hybrid Journal   (Followers: 16, SJR: 0.1, h-index: 6)
European Heart J.     Hybrid Journal   (Followers: 54, SJR: 6.997, h-index: 227)
European Heart J. - Cardiovascular Imaging     Hybrid Journal   (Followers: 8, SJR: 2.044, h-index: 58)
European Heart J. - Cardiovascular Pharmacotherapy     Full-text available via subscription   (Followers: 1)
European Heart J. - Quality of Care and Clinical Outcomes     Hybrid Journal  
European Heart J. Supplements     Hybrid Journal   (Followers: 7, SJR: 0.152, h-index: 31)
European J. of Cardio-Thoracic Surgery     Hybrid Journal   (Followers: 9, SJR: 1.568, h-index: 104)
European J. of Intl. Law     Hybrid Journal   (Followers: 169, SJR: 0.722, h-index: 38)
European J. of Orthodontics     Hybrid Journal   (Followers: 4, SJR: 1.09, h-index: 60)
European J. of Public Health     Hybrid Journal   (Followers: 20, SJR: 1.284, h-index: 64)
European Review of Agricultural Economics     Hybrid Journal   (Followers: 9, SJR: 1.549, h-index: 42)
European Review of Economic History     Hybrid Journal   (Followers: 28, SJR: 0.628, h-index: 24)
European Sociological Review     Hybrid Journal   (Followers: 40, SJR: 2.061, h-index: 53)
Evolution, Medicine, and Public Health     Open Access   (Followers: 10)
Family Practice     Hybrid Journal   (Followers: 14, SJR: 1.048, h-index: 77)
Fems Microbiology Ecology     Hybrid Journal   (Followers: 10, SJR: 1.687, h-index: 115)
Fems Microbiology Letters     Hybrid Journal   (Followers: 22, SJR: 1.126, h-index: 118)
Fems Microbiology Reviews     Hybrid Journal   (Followers: 27, SJR: 7.587, h-index: 150)
Fems Yeast Research     Hybrid Journal   (Followers: 14, SJR: 1.213, h-index: 66)
Foreign Policy Analysis     Hybrid Journal   (Followers: 23, SJR: 0.859, h-index: 10)
Forestry: An Intl. J. of Forest Research     Hybrid Journal   (Followers: 14, SJR: 0.903, h-index: 44)
Forum for Modern Language Studies     Hybrid Journal   (Followers: 6, SJR: 0.108, h-index: 6)
French History     Hybrid Journal   (Followers: 32, SJR: 0.123, h-index: 10)
French Studies     Hybrid Journal   (Followers: 20, SJR: 0.119, h-index: 7)
French Studies Bulletin     Hybrid Journal   (Followers: 10, SJR: 0.102, h-index: 3)
Gastroenterology Report     Open Access   (Followers: 2)
Genome Biology and Evolution     Open Access   (Followers: 11, SJR: 3.22, h-index: 39)
Geophysical J. Intl.     Hybrid Journal   (Followers: 34, SJR: 1.839, h-index: 119)
German History     Hybrid Journal   (Followers: 22, SJR: 0.437, h-index: 13)
GigaScience     Open Access   (Followers: 3)
Global Summitry     Hybrid Journal   (Followers: 1)
Glycobiology     Hybrid Journal   (Followers: 14, SJR: 1.692, h-index: 101)
Health and Social Work     Hybrid Journal   (Followers: 54, SJR: 0.505, h-index: 40)
Health Education Research     Hybrid Journal   (Followers: 13, SJR: 0.814, h-index: 80)
Health Policy and Planning     Hybrid Journal   (Followers: 24, SJR: 1.628, h-index: 66)
Health Promotion Intl.     Hybrid Journal   (Followers: 21, SJR: 0.664, h-index: 60)
History Workshop J.     Hybrid Journal   (Followers: 28, SJR: 0.313, h-index: 20)
Holocaust and Genocide Studies     Hybrid Journal   (Followers: 26, SJR: 0.115, h-index: 13)
Human Molecular Genetics     Hybrid Journal   (Followers: 8, SJR: 4.288, h-index: 233)
Human Reproduction     Hybrid Journal   (Followers: 72, SJR: 2.271, h-index: 179)
Human Reproduction Update     Hybrid Journal   (Followers: 17, SJR: 4.678, h-index: 128)
Human Rights Law Review     Hybrid Journal   (Followers: 60, SJR: 0.7, h-index: 21)
ICES J. of Marine Science: J. du Conseil     Hybrid Journal   (Followers: 51, SJR: 1.233, h-index: 88)
ICSID Review     Hybrid Journal   (Followers: 12)
ILAR J.     Hybrid Journal   (Followers: 2, SJR: 1.099, h-index: 51)
IMA J. of Applied Mathematics     Hybrid Journal   (SJR: 0.329, h-index: 26)
IMA J. of Management Mathematics     Hybrid Journal   (SJR: 0.351, h-index: 20)
IMA J. of Mathematical Control and Information     Hybrid Journal   (Followers: 2, SJR: 0.661, h-index: 28)
IMA J. of Numerical Analysis - advance access     Hybrid Journal   (SJR: 2.032, h-index: 44)
Industrial and Corporate Change     Hybrid Journal   (Followers: 10, SJR: 1.37, h-index: 81)
Industrial Law J.     Hybrid Journal   (Followers: 34, SJR: 0.184, h-index: 15)
Information and Inference     Free  
Integrative and Comparative Biology     Hybrid Journal   (Followers: 7, SJR: 1.911, h-index: 90)
Interacting with Computers     Hybrid Journal   (Followers: 10, SJR: 0.529, h-index: 59)
Interactive CardioVascular and Thoracic Surgery     Hybrid Journal   (Followers: 6, SJR: 0.743, h-index: 35)
Intl. Affairs     Hybrid Journal   (Followers: 56, SJR: 1.264, h-index: 53)
Intl. Data Privacy Law     Hybrid Journal   (Followers: 30)
Intl. Health     Hybrid Journal   (Followers: 5, SJR: 0.835, h-index: 15)
Intl. Immunology     Hybrid Journal   (Followers: 3, SJR: 1.613, h-index: 111)
Intl. J. for Quality in Health Care     Hybrid Journal   (Followers: 33, SJR: 1.593, h-index: 69)
Intl. J. of Constitutional Law     Hybrid Journal   (Followers: 63, SJR: 0.613, h-index: 19)
Intl. J. of Epidemiology     Hybrid Journal   (Followers: 178, SJR: 4.381, h-index: 145)
Intl. J. of Law and Information Technology     Hybrid Journal   (Followers: 5, SJR: 0.247, h-index: 8)
Intl. J. of Law, Policy and the Family     Hybrid Journal   (Followers: 30, SJR: 0.307, h-index: 15)
Intl. J. of Lexicography     Hybrid Journal   (Followers: 10, SJR: 0.404, h-index: 18)
Intl. J. of Low-Carbon Technologies     Open Access   (Followers: 1, SJR: 0.457, h-index: 12)
Intl. J. of Neuropsychopharmacology     Open Access   (Followers: 3, SJR: 1.69, h-index: 79)
Intl. J. of Public Opinion Research     Hybrid Journal   (Followers: 9, SJR: 0.906, h-index: 33)
Intl. J. of Refugee Law     Hybrid Journal   (Followers: 35, SJR: 0.231, h-index: 21)
Intl. J. of Transitional Justice     Hybrid Journal   (Followers: 12, SJR: 0.833, h-index: 12)
Intl. Mathematics Research Notices     Hybrid Journal   (Followers: 1, SJR: 2.052, h-index: 42)
Intl. Political Sociology     Hybrid Journal   (Followers: 35, SJR: 1.339, h-index: 19)
Intl. Relations of the Asia-Pacific     Hybrid Journal   (Followers: 22, SJR: 0.539, h-index: 17)
Intl. Studies Perspectives     Hybrid Journal   (Followers: 9, SJR: 0.998, h-index: 28)
Intl. Studies Quarterly     Hybrid Journal   (Followers: 42, SJR: 2.184, h-index: 68)
Intl. Studies Review     Hybrid Journal   (Followers: 20, SJR: 0.783, h-index: 38)
ISLE: Interdisciplinary Studies in Literature and Environment     Hybrid Journal   (Followers: 1, SJR: 0.155, h-index: 4)
ITNOW     Hybrid Journal   (Followers: 1, SJR: 0.102, h-index: 4)
J. of African Economies     Hybrid Journal   (Followers: 15, SJR: 0.647, h-index: 30)
J. of American History     Hybrid Journal   (Followers: 45, SJR: 0.286, h-index: 34)
J. of Analytical Toxicology     Hybrid Journal   (Followers: 13, SJR: 1.038, h-index: 60)
J. of Antimicrobial Chemotherapy     Hybrid Journal   (Followers: 14, SJR: 2.157, h-index: 149)
J. of Antitrust Enforcement     Hybrid Journal   (Followers: 1)
J. of Applied Poultry Research     Hybrid Journal   (Followers: 4, SJR: 0.563, h-index: 43)
J. of Biochemistry     Hybrid Journal   (Followers: 41, SJR: 1.341, h-index: 96)
J. of Burn Care & Research     Full-text available via subscription   (Followers: 9, SJR: 0.713, h-index: 57)
J. of Chromatographic Science     Hybrid Journal   (Followers: 18, SJR: 0.448, h-index: 42)
J. of Church and State     Hybrid Journal   (Followers: 11, SJR: 0.167, h-index: 11)
J. of Competition Law and Economics     Hybrid Journal   (Followers: 35, SJR: 0.442, h-index: 16)
J. of Complex Networks     Hybrid Journal   (Followers: 1, SJR: 1.165, h-index: 5)
J. of Conflict and Security Law     Hybrid Journal   (Followers: 13, SJR: 0.196, h-index: 15)
J. of Consumer Research     Full-text available via subscription   (Followers: 41, SJR: 4.896, h-index: 121)
J. of Crohn's and Colitis     Hybrid Journal   (Followers: 9, SJR: 1.543, h-index: 37)
J. of Cybersecurity     Hybrid Journal   (Followers: 3)
J. of Deaf Studies and Deaf Education     Hybrid Journal   (Followers: 8, SJR: 0.69, h-index: 36)
J. of Design History     Hybrid Journal   (Followers: 17, SJR: 0.166, h-index: 14)
J. of Economic Entomology     Full-text available via subscription   (Followers: 6, SJR: 0.894, h-index: 76)
J. of Economic Geography     Hybrid Journal   (Followers: 24, SJR: 2.909, h-index: 69)
J. of Environmental Law     Hybrid Journal   (Followers: 21, SJR: 0.457, h-index: 20)
J. of European Competition Law & Practice     Hybrid Journal   (Followers: 20)
J. of Experimental Botany     Hybrid Journal   (Followers: 13, SJR: 2.798, h-index: 163)
J. of Financial Econometrics     Hybrid Journal   (Followers: 22, SJR: 1.314, h-index: 27)
J. of Global Security Studies     Hybrid Journal   (Followers: 5)
J. of Heredity     Hybrid Journal   (Followers: 3, SJR: 1.024, h-index: 76)
J. of Hindu Studies     Hybrid Journal   (Followers: 8, SJR: 0.186, h-index: 3)
J. of Hip Preservation Surgery     Open Access  
J. of Human Rights Practice     Hybrid Journal   (Followers: 16, SJR: 0.399, h-index: 10)
J. of Infectious Diseases     Hybrid Journal   (Followers: 40, SJR: 4, h-index: 209)

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Journal Cover IMA Journal of Mathematical Control and Information
  [SJR: 0.661]   [H-I: 28]   [2 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0265-0754 - ISSN (Online) 1471-6887
   Published by Oxford University Press Homepage  [372 journals]
  • A numerical scheme for solving two-dimensional fractional optimal control
           problems by the Ritz method combined with fractional operational matrix
    • Authors: Nemati A; Yousefi S.
      Pages: 1079 - 1097
      Abstract: In this article, we present a new method to solve a class of two-dimensional fractional optimal control problems based upon the numerical polynomial approximation. In the proposed method, the fractional derivatives are expressed in the Caputo sense. The approach used here is to approximate the state and control functions by the Legendre orthonormal basis by using the Ritz method. To approximate derivative of the basis, the operational matrix of Caputo derivative is taken into account. Then we apply two-dimensional Legendre–Gauss quadrature rule to approximate double integral of the performance index functional. Next, the problem is converted into an equivalent non-linear unconstrained optimization problem. This problem is solved via the Newton’s iterative method. At last, the convergence of the proposed method is extensively investigated and an example is included to illustrate the effectiveness and applicability of the new procedure.
      PubDate: Fri, 08 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw009
      Issue No: Vol. 34, No. 4 (2016)
       
  • Model reduction of discrete-time linear systems using Meixner-like filters
    • Authors: Maraoui S; Krifa A, Bouzrara K.
      Pages: 1099 - 1115
      Abstract: In this article, we explore the use of the Meixner-like functions in estimating transfer functions of linear discrete-time systems. By expanding transfer functions with some suitable orthonormal basis functions, it is possible to reduce the estimate parameter number. Thus far, many orthonormal functions have been widely used in this framework such as Laguerre functions and Kautz functions. However, when the system have a slow initial onset or delay, Meixner-like functions, which have a slow start, are more suitable in terms of providing a more accurate approximation to the system. In this article, a minimal state-space realizations for discrete-time linear systems are derived using Meixner-like filters. Further we propose, from input/output measurements, an iterative optimization algorithm for the free parameter (Meixner-like pole) of the Meixner-like filters. The method consists in applying the Newton–Raphson's technique in which their elements are expressed analytically by using the derivative of the Meixner-like functions.
      PubDate: Fri, 15 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw010
      Issue No: Vol. 34, No. 4 (2016)
       
  • Reinforced gradient-type iterative learning control for discrete linear
           time-invariant systems with parameters uncertainties and external noises
    • Authors: Yang X; Ruan X.
      Pages: 1117 - 1133
      Abstract: In this article, a reinforced gradient-type iterative learning control algorithm is developed for a type of discrete linear time-invariant systems with parameters uncertainties and external noises. The technique is to construct a symmetric learning gain matrix on basis of the system Markov parameters and an appropriate learning step length. First, for the case when both the model uncertainties and the external noises are absent, sufficient and necessary monotone convergences of the proposed algorithm are derived by means of matrix theory and norm inequality under the assumption that the learning step length is properly chosen. Then, for the cases when the model uncertainties are tolerable and the external noises are bounded, the robust monotone convergence and robustness are respectively analysed. Compared with the conventional gradient-type iterative learning control scheme, the proposed reinforced one is more efficient in speeding up the convergent tracking performance and resisting perturbations. Numerical simulations testify the validity and the effectiveness as well as the feasibility.
      PubDate: Mon, 11 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw011
      Issue No: Vol. 34, No. 4 (2016)
       
  • The solution bounds and fixed point iterative algorithm for the discrete
           coupled algebraic Riccati equation applied to automatic control
    • Authors: Liu J; Wang L, Zhang J.
      Pages: 1135 - 1156
      Abstract: In this article, applying the special properties of nonnegative matrices and symmetric matrices, we consider the coupled term as a whole and derive the solution bounds of the discrete coupled algebraic Riccati equation. This reduces the error of taking apart the coupled term separately when applying inequality techniques to get the bounds in general. Then, using Cauchy–Schwarz inequality, matrix norm inequalities and a fixed point theorem, we discuss the existence uniqueness condition and fixed point iteration for the solution of this equation. Finally, we offer corresponding numerical examples to illustrate the effectiveness of our results.
      PubDate: Tue, 19 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw012
      Issue No: Vol. 34, No. 4 (2016)
       
  • Regional optimal control of a class of bilinear systems
    • Authors: Zerrik E; Kabouss A.
      Pages: 1157 - 1175
      Abstract: The purpose of this paper is to study regional optimal control of a class of distributed bilinear systems in both cases of unbounded and bounded controls. Then, we prove the existence of an optimal control that minimizes a functional cost and we give characterization of such a control. Also we give condition that ensures the uniqueness of the optimal control. The obtained results lead to an algorithm that we illustrate by simulations for a bi-dimensional diffusion system excited by a zone actuator.
      PubDate: Mon, 11 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw015
      Issue No: Vol. 34, No. 4 (2016)
       
  • A new approach to optimal control of delay systems via Haar wavelets
    • Authors: Esmaeili M; Keyanpour M.
      Pages: 1177 - 1194
      Abstract: In this paper, a numerical method based on Haar wavelet is proposed for solving the optimal control of time-delay system. The optimality conditions of this problem result to a two-point boundary value problem involving both delay and inverse time terms. The operational matrix of inverse time is introduced and applied for linear inverse time system. Then, the operational matrices of inverse time, integration, delay and product are utilized to reduce the two-point boundary value problem to an algebraic equations. Illustrative examples are included to demonstrate the validity and applicability of the technique.
      PubDate: Mon, 11 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw018
      Issue No: Vol. 34, No. 4 (2016)
       
  • An ℋ∞ approach to data-driven simultaneous fault detection and
           control
    • Authors: Salim M; Khosrowjerdi M.
      Pages: 1195 - 1213
      Abstract: This paper proposes a data-driven ℋ∞ approach to simultaneous fault detection and control problem. This problem is formulated as a time domain ℋ∞ optimization problem and its solution produces a data-driven ℋ∞ controller/detector unit of modest complexity which is capable of achieving some control and fault detection objectives. The mathematical model is assumed to be unknown and only input/output data are used for controller/detector designing. The tradeoff between these objectives is established by tuning a scalar parameter and some weighting matrices. An easily implementable algorithm summarizes the methodology presented in the paper. The proposed algorithm is applied to a numerical example in order to illustrate its effectiveness.
      PubDate: Wed, 27 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw019
      Issue No: Vol. 34, No. 4 (2016)
       
  • A collocation method via block-pulse functions for solving delay
           fractional optimal control problems
    • Authors: Hosseinpour S; Nazemi A.
      Pages: 1215 - 1237
      Abstract: A collocation scheme is applied to give an approximate solution of the fractional optimal control problems with delays in state and control. The operational matrix of fractional Riemann–Liouville integration, delay operational matrix and direct collocation method are used. The proposed technique is applied to transform the state and control variables into non-linear programming parameters at collocation points. The method is simple and computationally advantageous. Some examples are given to demonstrate the simplicity, clarity and powerfulness of the method.
      PubDate: Tue, 19 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw020
      Issue No: Vol. 34, No. 4 (2016)
       
  • Stabilization of an Euler–Bernoulli beam system with a tip mass subject
           to non-uniform bounded disturbance
    • Authors: Li Y; Xu G, Han Z.
      Pages: 1239 - 1254
      Abstract: We consider the stabilization problem of an Euler-Bernoulli beam with tip mass, which undergoes non-uniform bounded disturbance. We employ the idea of active disturbance rejection control to design a disturbance estimator that has a time-varying gain of exponential-type, and design a feedback controller, in which the estimate of disturbance is used to cancel the effect of disturbance. We apply the semigroup theory to prove the well-posedness of the resulting closed system. We prove the exponential stability of the closed loop system by the Lyapunov function approach. Some numerical simulations are given to support these results.
      PubDate: Tue, 19 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw021
      Issue No: Vol. 34, No. 4 (2016)
       
  • Event-driven model-free control in motion control with comparisons
    • Authors: Wang J; Mounier H, Niculescu S, et al.
      Pages: 1255 - 1275
      Abstract: The event-driven model-free control is proposed in this article, which deals with the ‘trade-off’ between computational cost and system performance. Model-free controllers demand low computational resources and have high robustness, which is especially suitable for embedded systems with complex dynamics and/or affected by disturbances. The proposed method is implemented in two distinct nonlinear Multiple Input, Multiple Output (MIMO) motion models: a quadrotor model hovering in different weather circumstances and a vehicular friction control model operating in variable road surface conditions. Under the time- and event-driven schemes, the model-free control is compared with standard control strategies in various realistic scenarios.
      PubDate: Fri, 08 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw023
      Issue No: Vol. 34, No. 4 (2016)
       
  • Proof by model: a new knowledge-based reachability analysis methodology
           for Petri net
    • Authors: Chao D; Chi Y, Yu T, et al.
      Pages: 1277 - 1298
      Abstract: To solve the state explosion problem in the reachability analysis of Petri nets, Chao recently broke the NP(nondeterministic polynomial time)-complete barrier by developing the first closed-form solution of the number of Control Related States for the kth-order system. In this paper, we propose a new proof methodology known as proof by model, which is based on the validated information of the reverse net, to simplify and accelerate the construction of the closed-form solution for Petri nets. Here, we apply this methodology to the proof procedure of Top-Right systems with one non-sharing resource placed in the top position of the right-side process. The core theoretical and data basis are that any forbidden (resp. live) state in a Petri net is non-reachable (resp. live) in its reverse net; and the validated information of the Bottom-Right system, the reverse net of Top-Right.
      PubDate: Mon, 11 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw025
      Issue No: Vol. 34, No. 4 (2016)
       
  • Exponential stabilization and motion planning of an overhead crane system
    • Authors: Elharfi A.
      Pages: 1299 - 1321
      Abstract: Two control problems for an overhead crane system are investigated: exponential stabilization and motion planning. The considered crane system is modelled by a hyperbolic PDE containing spatially varying terms. These terms influence the spectrum location of the open-loop system and therefore affect the analysis of the control problems under investigation. The first problem is solved in C0-semigroups context using an appropriate Lyapunov functional. The suggested stabilizer is explicitly constructed by means of a collocated-type controller of an auxiliary system combined with a term including the kernel of a suitable Volterre transformation. The second problem is solved using the Laplace transform of an adequate input–output function. Further, the explicit expressions of the motion planner and the corresponding full-state are provided. The two pursued methods are systematic and offer an intrinsic insight about the mechanism of the controller’s construction.
      PubDate: Mon, 04 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw026
      Issue No: Vol. 34, No. 4 (2016)
       
  • $\mathscr{H}_{2}$ model order reduction for bilinear systems based on the
           cross gramian
    • Authors: Yang P; Xu K, Jiang Y.
      Pages: 1323 - 1338
      Abstract: The $\mathscr{H}_{2}$ optimal model order reduction on the basis of the cross gramian for a given single-input and single-output (SISO) bilinear system is discussed in this article. According to the cross gramian, the expression of $\mathscr{H}_{2}$ norm for the SISO bilinear system can be represented. Then, taking advantage of the partial derivative, we can derive the necessary conditions of the $\mathscr{H}_{2}$ optimality for the reduced order bilinear system. From the necessary conditions, the coefficient matrices of the $\mathscr{H}_{2}$ optimal reduced order system can be constructed. After that, we propose an iterative algorithm based on the cross gramian. When the algorithm is convergent, the reduced order system can satisfy the necessary conditions. Finally, the numerical examples exhibit the effectiveness of our algorithm.
      PubDate: Fri, 22 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw029
      Issue No: Vol. 34, No. 4 (2016)
       
  • Stability and L1-gain control for positive impulsive switched systems with
           mixed time-varying delays
    • Authors: Li S; Xiang Z.
      Pages: 1339 - 1358
      Abstract: This article addresses the problems of exponential stability and L1-gain control for a class of positive impulsive switched systems with mixed time-varying delays. A new class of hybrid systems, called positive impulsive delayed switched systems, are introduced for the first time. A necessary and sufficient condition for the positivity of such kind of systems is proposed. Moreover, by using the average dwell time approach and the co-positive Lyapunov–Krasovskii function technique, a sufficient condition is presented to ensure the exponential stability with $L_1$-gain performance of the positive impulsive delayed switched system. Based on the obtained results, a sufficient condition for the existence of a desired state feedback controller is derived, and an iterative convex optimization approach is developed to compute the controller gain matrices. Finally, two numerical examples are provided to illustrate the effectiveness of the proposed method.
      PubDate: Mon, 11 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw030
      Issue No: Vol. 34, No. 4 (2016)
       
  • The cross-motion invariant group and its application to kinematics
    • Authors: Adorno B; Fraisse P.
      Pages: 1359 - 1378
      Abstract: This article presents the cross-motion invariant group—CMI(3)—whose group operation is defined over unit dual quaternions such that rigid motions are cross-motion invariant; that is, the resultant translation does not depend on rotation and vice-versa. We present the main properties of CMI(3) and the differences between this group and the standard group $\text{Spin}(3)\ltimes\mathbb{R}^{3}$ of unit dual quaternions, as well as the kinematic equations under a sequence of CMI(3) operations. Two numerical examples are presented in order to illustrate the main characteristics of CMI(3).
      PubDate: Mon, 11 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw032
      Issue No: Vol. 34, No. 4 (2016)
       
  • On the controllability of hyperbolic linear systems with constraints on
           the gradient
    • Authors: Ezzahri L; Boutoulout A, El Alaoui F.
      Pages: 1379 - 1393
      Abstract: We present some results concerning the controllability of a hyperbolic linear equation with constraints on the gradient, we're interested in an internal subregion of the system evolution domain Ω. We analyse the controllability problem with constraints (also called the enlarged controllability) with distributed control that ensures the transfer of our system to a final desired gradient between two prescribed profiles f1 and f2. The proofs use a sub-differential approach, the Lagrangian one, and finally numerical results are illustrated.
      PubDate: Tue, 26 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw033
      Issue No: Vol. 34, No. 4 (2016)
       
  • Deadlock Control Based on Capacity Restrictions for FMS
    • Authors: Guo J; Cui Y, Liu C.
      Pages: 1395 - 1410
      Abstract: In flexible manufacturing systems (FMS), deadlock prevention is an important problem to be solved. Petri nets are a powerful tool and wildly used to model and control FMS. Based on the capacity restrictions for activity places in the Petri net model of an FMS, a new approach is presented to implement the liveness of the controlled net system in this research. First, given a Petri net prone to deadlocks, its initial capacity vector is decided. Then, an algorithm is proposed to compute its final capacity vector iteratively. At each iteration, the capacity of one activity place is decreased by one. The objective is to prevent the excessive occupancy of one resource by one production process, which is an important reason causing a deadlock. This process is carried out until the net model becomes live. With the constraints by the final capacity vector, the controlled net is live. It is proved the iterative algorithm is convergent. Considering the redundancy of capacity restrictions, another algorithm is given to eliminate it. The presented method for FMS control guarantees its live operation and high performance in terms of resource utilization. Generally, the proposed method is applicable, easy to use, effective and straightforward. Finally, two parameterized examples are used to demonstrate the applicability and effectiveness of the proposed approach.
      PubDate: Tue, 26 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw037
      Issue No: Vol. 34, No. 4 (2016)
       
  • H∞ control for a class of non-linear discrete-time networked systems
           with limited information
    • Authors: Wang Y; Zhang S.
      Pages: 1411 - 1429
      Abstract: In this article, the problems of stabilization and H∞ control are investigated for a class of non-linear networked systems with packet dropouts, network-induced delays and sensor faults. We construct a novel model by taking packet dropouts, distributed delays and sensor faults into account in a unified way. The packet dropouts process is modelled as a Markov chain taking values in a finite state space. Network-induced delays with distributed characteristics are divided into two intervals satisfying the Bernoulli random distribution. Sensor faults are described as stochastic variables and each sensor has different fault rate and independent of others. The resulting closed-loop system is converted into a Markov switching system. A mode-dependent controller is designed such that the closed-loop system is stochastically stable and satisfies H∞ disturbance attenuation level in terms of certain linear matrix inequalities. Finally, a numerical example is given to illustrate the usefulness of the developed method in this article.
      PubDate: Tue, 26 Jul 2016 00:00:00 GMT
      DOI: 10.1093/imamci/dnw038
      Issue No: Vol. 34, No. 4 (2016)
       
 
 
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