Publisher: Cambridge University Press   (Total: 387 journals)

 A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

  First | 1 2        [Sort by number of followers]   [Restore default list]

Showing 201 - 387 of 387 Journals sorted alphabetically
J. of British Studies     Full-text available via subscription   (Followers: 34, SJR: 0.246, CiteScore: 0)
J. of Child Language     Hybrid Journal   (Followers: 30, SJR: 1.035, CiteScore: 2)
J. of Chinese History / 中國歷史學刊     Hybrid Journal  
J. of Classics Teaching     Open Access  
J. of Clinical and Translational Science     Open Access  
J. of Dairy Research     Full-text available via subscription   (Followers: 8, SJR: 0.573, CiteScore: 1)
J. of Demographic Economics     Hybrid Journal   (Followers: 3, SJR: 1.227, CiteScore: 1)
J. of Developmental Origins of Health and Disease     Hybrid Journal   (Followers: 2, SJR: 0.843, CiteScore: 2)
J. of Diagnostic Radiography and Imaging     Hybrid Journal   (Followers: 4)
J. of East Asian Studies     Full-text available via subscription   (Followers: 17, SJR: 0.59, CiteScore: 1)
J. of Ecclesiastical History     Hybrid Journal   (Followers: 19, SJR: 0.138, CiteScore: 0)
J. of Economic History     Full-text available via subscription   (Followers: 47, SJR: 1.82, CiteScore: 2)
J. of Experimental Political Science     Full-text available via subscription   (Followers: 7, SJR: 2.526, CiteScore: 2)
J. of Financial and Quantitative Analysis     Full-text available via subscription   (Followers: 50, SJR: 3.636, CiteScore: 2)
J. of Fluid Mechanics     Hybrid Journal   (Followers: 193, SJR: 1.591, CiteScore: 3)
J. of French Language Studies     Hybrid Journal   (Followers: 7, SJR: 0.163, CiteScore: 0)
J. of Functional Programming     Hybrid Journal   (Followers: 1, SJR: 0.458, CiteScore: 1)
J. of Germanic Linguistics     Full-text available via subscription   (Followers: 8, SJR: 0.157, CiteScore: 0)
J. of Global History     Full-text available via subscription   (Followers: 30, SJR: 0.34, CiteScore: 1)
J. of Hellenic Studies     Full-text available via subscription   (Followers: 19, SJR: 0.146, CiteScore: 0)
J. of Helminthology     Hybrid Journal   (Followers: 2, SJR: 0.553, CiteScore: 1)
J. of Hospitality and Tourism Management     Full-text available via subscription   (Followers: 14, SJR: 0.949, CiteScore: 2)
J. of Institutional Economics     Hybrid Journal   (Followers: 15, SJR: 0.978, CiteScore: 2)
J. of K-Theory     Full-text available via subscription  
J. of Laryngology & Otology     Hybrid Journal   (Followers: 21, SJR: 0.495, CiteScore: 1)
J. of Latin American Studies     Hybrid Journal   (Followers: 33, SJR: 0.34, CiteScore: 1)
J. of Law and Religion     Full-text available via subscription   (Followers: 10, SJR: 0.115, CiteScore: 0)
J. of Linguistic Geography     Full-text available via subscription   (Followers: 1)
J. of Linguistics     Hybrid Journal   (Followers: 18, SJR: 0.451, CiteScore: 1)
J. of Management & Organization     Full-text available via subscription   (Followers: 350, SJR: 0.543, CiteScore: 1)
J. of Mechanics     Hybrid Journal   (Followers: 21, SJR: 0.303, CiteScore: 1)
J. of Modern African Studies     Hybrid Journal   (Followers: 20, SJR: 0.606, CiteScore: 1)
J. of Navigation     Hybrid Journal   (Followers: 254, SJR: 0.493, CiteScore: 2)
J. of Nutritional Science     Open Access   (Followers: 3, SJR: 0.984, CiteScore: 2)
J. of Pacific Rim Psychology     Hybrid Journal   (Followers: 1, SJR: 0.33, CiteScore: 1)
J. of Paleontology     Hybrid Journal   (Followers: 11, SJR: 0.882, CiteScore: 2)
J. of Pension Economics & Finance     Hybrid Journal   (Followers: 7, SJR: 0.931, CiteScore: 1)
J. of Plasma Physics     Hybrid Journal   (Followers: 23, SJR: 0.441, CiteScore: 1)
J. of Psychiatric Intensive Care     Hybrid Journal   (Followers: 8)
J. of Psychologists and Counsellors in Schools     Full-text available via subscription   (Followers: 8, SJR: 0, CiteScore: 1)
J. of Public Policy     Hybrid Journal   (Followers: 27, SJR: 0.542, CiteScore: 1)
J. of Race, Ethnicity, and Politics     Full-text available via subscription   (Followers: 4)
J. of Radiotherapy in Practice     Hybrid Journal   (Followers: 7, SJR: 0.16, CiteScore: 0)
J. of Relationships Research     Hybrid Journal   (Followers: 5, SJR: 0.294, CiteScore: 0)
J. of Roman Archaeology     Hybrid Journal   (Followers: 22, SJR: 0.341, CiteScore: 1)
J. of Roman Studies     Full-text available via subscription   (Followers: 22, SJR: 0.182, CiteScore: 0)
J. of Smoking Cessation     Hybrid Journal   (Followers: 6, SJR: 0.411, CiteScore: 0)
J. of Social Policy     Hybrid Journal   (Followers: 42, SJR: 1.063, CiteScore: 2)
J. of Southeast Asian Studies     Full-text available via subscription   (Followers: 12, SJR: 0.14, CiteScore: 0)
J. of Symbolic Logic     Hybrid Journal   (Followers: 1, SJR: 1.057, CiteScore: 1)
J. of the American Philosophical Association     Hybrid Journal   (SJR: 0.857, CiteScore: 1)
J. of the Australian Mathematical Society     Full-text available via subscription   (SJR: 0.46, CiteScore: 1)
J. of the Gilded Age and Progressive Era     Full-text available via subscription   (Followers: 8, SJR: 0.192, CiteScore: 0)
J. of the History of Economic Thought     Full-text available via subscription   (Followers: 14, SJR: 0.784, CiteScore: 1)
J. of the Institute of Mathematics of Jussieu     Hybrid Journal   (SJR: 2.393, CiteScore: 1)
J. of the Intl. Neuropsychological Society     Hybrid Journal   (Followers: 15, SJR: 1.408, CiteScore: 3)
J. of the Intl. Phonetic Association     Full-text available via subscription   (Followers: 2, SJR: 0.27, CiteScore: 1)
J. of the Marine Biological Association of the UK     Hybrid Journal   (Followers: 23, SJR: 0.548, CiteScore: 1)
J. of the Royal Asiatic Society     Hybrid Journal   (Followers: 14, SJR: 0.121, CiteScore: 0)
J. of the Society for American Music     Hybrid Journal   (Followers: 10, SJR: 0.199, CiteScore: 0)
J. of Tropical Ecology     Hybrid Journal   (Followers: 14, SJR: 0.626, CiteScore: 1)
J. of Tropical Psychology     Hybrid Journal   (Followers: 1)
J. of Wine Economics     Full-text available via subscription   (Followers: 5)
Japanese J. of Political Science     Hybrid Journal   (Followers: 8, SJR: 0.372, CiteScore: 1)
Kantian Review     Full-text available via subscription   (Followers: 3)
Knowledge Engineering Review     Hybrid Journal   (Followers: 2, SJR: 0.357, CiteScore: 2)
Language and Cognition     Hybrid Journal   (Followers: 22)
Language in Society     Hybrid Journal   (Followers: 22, SJR: 1.466, CiteScore: 2)
Language Teaching     Hybrid Journal   (Followers: 33, SJR: 1.233, CiteScore: 2)
Language Variation and Change     Hybrid Journal   (Followers: 9, SJR: 0.854, CiteScore: 1)
Laser and Particle Beams     Hybrid Journal   (Followers: 2, SJR: 0.497, CiteScore: 1)
Law and History Review     Full-text available via subscription   (Followers: 15, SJR: 0.184, CiteScore: 0)
Legal Information Management     Hybrid Journal   (Followers: 10)
Legal Theory     Hybrid Journal   (Followers: 14, SJR: 0.484, CiteScore: 1)
Leiden J. of Intl. Law     Hybrid Journal   (Followers: 39, SJR: 0.482, CiteScore: 0)
Libyan Studies     Hybrid Journal   (Followers: 1, SJR: 0.111, CiteScore: 0)
LMS J. of Computation and Mathematics     Free   (SJR: 0.229, CiteScore: 1)
Macroeconomic Dynamics     Hybrid Journal   (Followers: 25, SJR: 1.169, CiteScore: 1)
Management and Organization Review     Hybrid Journal   (Followers: 12, SJR: 0.816, CiteScore: 2)
Mathematical Proceedings of the Cambridge Philosophical Society     Full-text available via subscription   (Followers: 1, SJR: 1.086, CiteScore: 1)
Mathematical Structures in Computer Science     Hybrid Journal   (Followers: 3, SJR: 0.298, CiteScore: 1)
Medical History     Hybrid Journal   (Followers: 8, SJR: 0.417, CiteScore: 1)
Microscopy and Microanalysis     Full-text available via subscription   (Followers: 2, SJR: 0.292, CiteScore: 0)
Modern Asian Studies     Hybrid Journal   (Followers: 16, SJR: 0.397, CiteScore: 0)
Modern Intellectual History     Hybrid Journal   (Followers: 16, SJR: 0.218, CiteScore: 0)
MRS Communications     Hybrid Journal   (SJR: 1.443, CiteScore: 3)
MRS Energy & Sustainability - A Review J.     Full-text available via subscription  
Nagoya Mathematical J.     Hybrid Journal   (SJR: 0.892, CiteScore: 1)
Natural Language Engineering     Hybrid Journal   (Followers: 4, SJR: 0.264, CiteScore: 1)
Netherlands J. of Geosciences     Hybrid Journal   (SJR: 0.285, CiteScore: 1)
Netherlands Yearbook of Intl. Law     Full-text available via subscription   (Followers: 15, SJR: 0.196, CiteScore: 0)
Network Science     Hybrid Journal   (Followers: 5, SJR: 0.461, CiteScore: 1)
Neuron Glia Biology     Hybrid Journal  
New Perspectives on Turkey     Full-text available via subscription   (Followers: 3, SJR: 0.111, CiteScore: 0)
New Surveys in the Classics     Full-text available via subscription   (Followers: 3)
New Testament Studies     Hybrid Journal   (Followers: 33, SJR: 0.316, CiteScore: 0)
New Theatre Quarterly     Hybrid Journal   (Followers: 15, SJR: 0.132, CiteScore: 0)
Nineteenth-Century Music Review     Hybrid Journal   (Followers: 6, SJR: 0.1, CiteScore: 0)
Nordic J. of Linguistics     Hybrid Journal   (Followers: 8, SJR: 0.156, CiteScore: 0)
Numerical Mathematics : Theory, Methods and Applications     Full-text available via subscription  
Nurse Prescriber     Full-text available via subscription   (Followers: 5)
Nutrition Research Reviews     Hybrid Journal   (Followers: 13, SJR: 1.756, CiteScore: 5)
Organised Sound     Hybrid Journal   (Followers: 8, SJR: 0.271, CiteScore: 0)
Oryx     Hybrid Journal   (Followers: 19, SJR: 0.981, CiteScore: 2)
Paleobiology     Full-text available via subscription   (Followers: 6, SJR: 1.563, CiteScore: 3)
Palliative & Supportive Care     Hybrid Journal   (Followers: 34, SJR: 0.611, CiteScore: 1)
Papers of the British School at Rome     Full-text available via subscription   (Followers: 19, SJR: 0.13, CiteScore: 0)
Parasitology     Hybrid Journal   (Followers: 4, SJR: 1.194, CiteScore: 2)
Parasitology Open     Open Access  
Personality Neuroscience     Open Access  
Perspectives on Politics     Full-text available via subscription   (Followers: 42, SJR: 2.075, CiteScore: 2)
Philosophy     Full-text available via subscription   (Followers: 14, SJR: 0.331, CiteScore: 0)
Phonology     Hybrid Journal   (Followers: 9, SJR: 0.623, CiteScore: 1)
Plainsong and Medieval Music     Hybrid Journal   (Followers: 8, SJR: 0.114, CiteScore: 0)
Plant Genetic Resources     Hybrid Journal   (Followers: 3, SJR: 0.353, CiteScore: 1)
Polar Record     Hybrid Journal   (Followers: 2, SJR: 0.313, CiteScore: 1)
Political Science Research and Methods     Full-text available via subscription   (Followers: 22)
Politics & Gender     Full-text available via subscription   (Followers: 25, SJR: 0.861, CiteScore: 1)
Politics and Religion     Full-text available via subscription   (Followers: 9, SJR: 0.541, CiteScore: 1)
Popular Music     Hybrid Journal   (Followers: 20, SJR: 0.216, CiteScore: 0)
Powder Diffraction     Full-text available via subscription   (Followers: 1, SJR: 0.319, CiteScore: 1)
Prehospital and Disaster Medicine     Full-text available via subscription   (Followers: 9, SJR: 0.462, CiteScore: 1)
Primary Health Care Research & Development     Open Access   (Followers: 18, SJR: 0.52, CiteScore: 1)
Probability in the Engineering and Informational Sciences     Hybrid Journal   (Followers: 1, SJR: 0.406, CiteScore: 1)
Proceedings of the Edinburgh Mathematical Society     Hybrid Journal   (SJR: 0.695, CiteScore: 1)
Proceedings of the Intl. Astronomical Union     Full-text available via subscription   (Followers: 2, SJR: 0.117, CiteScore: 0)
Proceedings of the Nutrition Society     Hybrid Journal   (Followers: 8, SJR: 1.373, CiteScore: 4)
Proceedings of the Prehistoric Society     Hybrid Journal   (Followers: 9)
Proceedings of the Royal Society of Edinburgh Section A Mathematics     Full-text available via subscription   (SJR: 1.506, CiteScore: 1)
Progress in Neurotherapeutics and Neuropsychopharmacology     Full-text available via subscription  
PS: Political Science & Politics     Full-text available via subscription   (Followers: 38, SJR: 0.665, CiteScore: 1)
Psychological Medicine     Hybrid Journal   (Followers: 18, SJR: 3.274, CiteScore: 5)
Public Health Nutrition     Hybrid Journal   (Followers: 23, SJR: 1.122, CiteScore: 2)
Publications of the Astronomical Society of Australia     Hybrid Journal   (Followers: 2, SJR: 1.237, CiteScore: 2)
Quarterly Reviews of Biophysics     Hybrid Journal   (Followers: 3, SJR: 3.282, CiteScore: 6)
Quaternary Research     Full-text available via subscription   (Followers: 19, SJR: 1.216, CiteScore: 2)
Queensland Review     Full-text available via subscription   (SJR: 0.101, CiteScore: 0)
Radiocarbon     Hybrid Journal   (Followers: 9, SJR: 0.959, CiteScore: 2)
Ramus : Critical Studies in Greek and Roman Literature     Hybrid Journal   (Followers: 5, SJR: 0.201, CiteScore: 0)
ReCALL     Hybrid Journal   (Followers: 4, SJR: 2.813, CiteScore: 3)
Religious Studies     Hybrid Journal   (Followers: 12, SJR: 0.172, CiteScore: 0)
Renewable Agriculture and Food Systems     Hybrid Journal   (Followers: 15, SJR: 0.593, CiteScore: 2)
Review of Intl. Studies     Full-text available via subscription   (Followers: 27, SJR: 1.63, CiteScore: 2)
Review of Middle East Studies     Full-text available via subscription   (Followers: 10, SJR: 0.101, CiteScore: 0)
Review of Politics     Full-text available via subscription   (Followers: 5, SJR: 0.119, CiteScore: 0)
Review of Symbolic Logic     Full-text available via subscription   (Followers: 2, SJR: 1.049, CiteScore: 1)
Reviews in Clinical Gerontology     Hybrid Journal   (Followers: 5)
Revista de Historia Económica     Full-text available via subscription   (Followers: 1, SJR: 0.221, CiteScore: 0)
Revista Internacional de la Cruz Roja     Full-text available via subscription   (Followers: 2)
Robotica     Hybrid Journal   (Followers: 3, SJR: 0.375, CiteScore: 1)
Royal Institute of Philosophy Supplements     Full-text available via subscription   (Followers: 4)
Rural History     Hybrid Journal   (Followers: 14, SJR: 0.145, CiteScore: 0)
Science in Context     Hybrid Journal   (Followers: 3, SJR: 0.265, CiteScore: 0)
Scottish J. of Theology     Hybrid Journal   (Followers: 38, SJR: 0.177, CiteScore: 0)
Seed Science Research     Hybrid Journal   (Followers: 2, SJR: 0.95, CiteScore: 2)
Slavic Review     Hybrid Journal   (Followers: 8, SJR: 0.395, CiteScore: 1)
Social Philosophy and Policy     Full-text available via subscription   (Followers: 22, SJR: 0.253, CiteScore: 1)
Social Policy and Society     Hybrid Journal   (Followers: 189, SJR: 0.653, CiteScore: 1)
Social Science History     Full-text available via subscription   (Followers: 16, SJR: 0.2, CiteScore: 0)
Spanish J. of Psychology     Hybrid Journal  
Studies in American Political Development     Hybrid Journal   (Followers: 6, SJR: 0.204, CiteScore: 0)
Studies in Church History     Full-text available via subscription   (Followers: 1)
Studies in Second Language Acquisition     Hybrid Journal   (Followers: 41, SJR: 1.516, CiteScore: 2)
Tempo     Hybrid Journal   (Followers: 2, SJR: 0.151, CiteScore: 0)
Thalamus & Related Systems     Full-text available via subscription  
The Americas : A Quarterly Review of Latin American History     Full-text available via subscription   (Followers: 5, SJR: 0.305, CiteScore: 0)
The Lichenologist     Hybrid Journal   (Followers: 5, SJR: 1.113, CiteScore: 2)
The Mathematical Gazette     Full-text available via subscription   (Followers: 1)
Theatre Research Intl.     Full-text available via subscription   (Followers: 14, SJR: 0.204, CiteScore: 0)
Theatre Survey     Full-text available via subscription   (Followers: 11, SJR: 0.121, CiteScore: 0)
Theory and Practice of Logic Programming     Hybrid Journal   (Followers: 3, SJR: 0.524, CiteScore: 2)
Think     Full-text available via subscription   (Followers: 6)
TRaNS : Trans-Regional-and-National Studies of Southeast Asia     Full-text available via subscription   (Followers: 6, SJR: 0.192, CiteScore: 0)
Transactions of the Royal Historical Society     Hybrid Journal   (Followers: 15, SJR: 0.419, CiteScore: 0)
Transnational Environmental Law     Hybrid Journal   (Followers: 5, SJR: 0.498, CiteScore: 1)
Twentieth-century music     Hybrid Journal   (Followers: 4, SJR: 0.453, CiteScore: 1)
Twin Research and Human Genetics     Full-text available via subscription   (SJR: 0.72, CiteScore: 1)
Urban History     Hybrid Journal   (Followers: 18, SJR: 0.358, CiteScore: 0)
Utilitas     Hybrid Journal   (Followers: 8, SJR: 0.712, CiteScore: 0)
Victorian Literature and Culture     Hybrid Journal   (Followers: 21, SJR: 0.163, CiteScore: 0)
Visual Neuroscience     Hybrid Journal   (Followers: 7, SJR: 1.012, CiteScore: 2)
Wireless Power Transfer     Full-text available via subscription   (Followers: 4)
World Politics     Hybrid Journal   (Followers: 213, SJR: 6.544, CiteScore: 4)
World Trade Review     Full-text available via subscription   (Followers: 17, SJR: 0.591, CiteScore: 1)
World's Poultry Science J.     Full-text available via subscription   (Followers: 5, SJR: 0.559, CiteScore: 1)
Yearbook of Intl. Humanitarian Law     Full-text available via subscription   (Followers: 8, SJR: 0.107, CiteScore: 0)
Zygote     Hybrid Journal   (Followers: 1, SJR: 0.387, CiteScore: 1)

  First | 1 2        [Sort by number of followers]   [Restore default list]

Similar Journals
Journal Cover
Numerical Mathematics : Theory, Methods and Applications
Number of Followers: 0  
 
  Full-text available via subscription Subscription journal
ISSN (Print) 1004-8979 - ISSN (Online) 2079-7338
Published by Cambridge University Press Homepage  [387 journals]
  • A Few Benchmark Test Cases for Higher-Order Euler Solvers
    • Authors: Liang Pan; Jiequan Li, Kun Xu
      Pages: 711 - 736
      Abstract: There have been great efforts on the development of higher-order numerical schemes for compressible Euler equations in recent decades. The traditional test cases proposed thirty years ago mostly target on the strong shock interactions, which may not be adequate enough for evaluating the performance of current higher-order schemes. In order to set up a higher standard for the development of new algorithms, in this paper we present a few benchmark cases with severe and complicated wave structures and interactions, which can be used to clearly distinguish different kinds of higher-order schemes. All tests are selected so that the numerical settings are very simple and any higher order scheme can be straightforwardly applied to these cases. The examples include highly oscillatory solutions and the large density ratio problem in one dimensional case. In two dimensions, the cases include hurricane-like solutions; interactions of planar contact discontinuities with asymptotic large Mach number (the composite of entropy wave and vortex sheets); interaction of planar rarefaction waves with transition from continuous flows to the presence of shocks; and other types of interactions of two-dimensional planar waves. To get good performance on all these cases may push algorithm developer to seek for new methodology in the design of higher-order schemes, and improve the robustness and accuracy of higher-order schemes to a new level of standard. In order to give reference solutions, the fourth-order gas-kinetic scheme (GKS) will be used to all these benchmark cases, even though the GKS solutions may not be very accurate in some cases. The main purpose of this paper is to recommend other CFD researchers to try these cases as well, and promote further development of higher-order schemes.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.0018
      Issue No: Vol. 10, No. 4 (2017)
       
  • Blowup of Volterra Integro-Differential Equations and Applications to
           Semi-Linear Volterra Diffusion Equations
    • Authors: Zhanwen Yang; Tao Tang, Jiwei Zhang
      Pages: 737 - 759
      Abstract: In this paper, we discuss the blowup of Volterra integro-differential equations (VIDEs) with a dissipative linear term. To overcome the fluctuation of solutions, we establish a Razumikhin-type theorem to verify the unboundedness of solutions. We also introduce leaving-times and arriving-times for the estimation of the spending-times of solutions to ∞. Based on these two typical techniques, the blowup and global existence of solutions to VIDEs with local and global integrable kernels are presented. As applications, the critical exponents of semi-linear Volterra diffusion equations (SLVDEs) on bounded domains with constant kernel are generalized to SLVDEs on bounded domains and ℝ N with some local integrable kernels. Moreover, the critical exponents of SLVDEs on both bounded domains and the unbounded domain ℝ N are investigated for global integrable kernels.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2016.0001
      Issue No: Vol. 10, No. 4 (2017)
       
  • Evaluation Algorithm of PHT-Spline Surfaces
    • Authors: Zhihua Wang; Falai Chen, Jiansong Deng
      Pages: 760 - 774
      Abstract: PHT-splines are a type of polynomial splines over hierarchical T-meshes which posses perfect local refinement property. This property makes PHT-splines useful in geometric modeling and iso-geometric analysis. Current implementation of PHT-splines stores the basis functions in Bézier forms, which saves some computational costs but consumes a lot of memories. In this paper, we propose a de Boor like algorithm to evaluate PHT-splines provided that only the information about the control coefficients and the hierarchical mesh structure is given. The basic idea is to represent a PHT-spline locally in a tensor product B-spline, and then apply the de-Boor algorithm to evaluate the PHT-spline at a certain parameter pair. We perform analysis about computational complexity and memory costs. The results show that our algorithm takes about the same order of computational costs while requires much less amount of memory compared with the Bézier representations. We give an example to illustrate the effectiveness of our algorithm.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.0003
      Issue No: Vol. 10, No. 4 (2017)
       
  • q +++++++++++++++-Minimization+for+Polynomial+Chaos+Expansions&rft.title=Numerical+Mathematics+:+Theory,+Methods+and+Applications&rft.issn=1004-8979&rft.date=2017&rft.volume=10&rft.spage=775&rft.epage=797&rft.aulast=Guo&rft.aufirst=Ling&rft.au=Ling+Guo&rft.au=Yongle+Liu,+Liang+Yan&rft_id=info:doi/10.4208/nmtma.2017.0001">Sparse Recovery via ℓq -Minimization for Polynomial Chaos Expansions
    • Authors: Ling Guo; Yongle Liu, Liang Yan
      Pages: 775 - 797
      Abstract: In this paper we consider the algorithm for recovering sparse orthogonal polynomials using stochastic collocation via ℓq minimization. The main results include: 1) By using the norm inequality between ℓq and ℓ 2 and the square root lifting inequality, we present several theoretical estimates regarding the recoverability for both sparse and non-sparse signals via ℓq minimization; 2) We then combine this method with the stochastic collocation to identify the coefficients of sparse orthogonal polynomial expansions, stemming from the field of uncertainty quantification. We obtain recoverability results for both sparse polynomial functions and general non-sparse functions. We also present various numerical experiments to show the performance of the ℓq algorithm. We first present some benchmark tests to demonstrate the ability of ℓq minimization to recover exactly sparse signals, and then consider three classical analytical functions to show the advantage of this method over the standard ℓ 1 and reweighted ℓ 1 minimization. All the numerical results indicate that the ℓq method performs better than standard ℓ 1 and reweighted ℓ 1 minimization.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.0001
      Issue No: Vol. 10, No. 4 (2017)
       
  • Itô-Taylor Schemes for Solving Mean-Field Stochastic Differential
           Equations
    • Authors: Yabing Sun; Jie Yang, Weidong Zhao
      Pages: 798 - 828
      Abstract: This paper is devoted to numerical methods for mean-field stochastic differential equations (MSDEs). We first develop the mean-field Itô formula and mean-field Itô-Taylor expansion. Then based on the new formula and expansion, we propose the Itô-Taylor schemes of strong order γ and weak order η for MSDEs, and theoretically obtain the convergence rate γ of the strong Itô-Taylor scheme, which can be seen as an extension of the well-known fundamental strong convergence theorem to the mean-field SDE setting. Finally some numerical examples are given to verify our theoretical results.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.0007
      Issue No: Vol. 10, No. 4 (2017)
       
  • Finite Element and Discontinuous Galerkin Methods with Perfect Matched
           Layers for American Options
    • Authors: Haiming Song; Kai Zhang, Yutian Li
      Pages: 829 - 851
      Abstract: This paper is devoted to the American option pricing problem governed by the Black-Scholes equation. The existence of an optimal exercise policy makes the problem a free boundary value problem of a parabolic equation on an unbounded domain. The optimal exercise boundary satisfies a nonlinear Volterra integral equation and is solved by a high-order collocation method based on graded meshes. This free boundary is then deformed to a fixed boundary by the front-fixing transformation. The boundary condition at infinity (due to the fact that the underlying asset's price could be arbitrarily large in theory), is treated by the perfectly matched layer technique. Finally, the resulting initial-boundary value problems for the option price and some of the Greeks on a bounded rectangular space-time domain are solved by a finite element method. In particular, for Delta, one of the Greeks, we propose a discontinuous Galerkin method to treat the discontinuity in its initial condition. Convergence results for these two methods are analyzed and several numerical simulations are provided to verify these theoretical results.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.0020
      Issue No: Vol. 10, No. 4 (2017)
       
  • Learning Non-Negativity Constrained Variation for Image Denoising and
           Deblurring
    • Authors: Tengda Wei; Linshan Wang, Ping Lin, Jialing Chen, Yangfan Wang, Haiyong Zheng
      Pages: 852 - 871
      Abstract: This paper presents a heuristic Learning-based Non-Negativity Constrained Variation (L-NNCV) aiming to search the coefficients of variational model automatically and make the variation adapt different images and problems by supervised-learning strategy. The model includes two terms: a problem-based term that is derived from the prior knowledge, and an image-driven regularization which is learned by some training samples. The model can be solved by classical ε-constraint method. Experimental results show that: the experimental effectiveness of each term in the regularization accords with the corresponding theoretical proof; the proposed method outperforms other PDE-based methods on image denoising and deblurring.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.m1653
      Issue No: Vol. 10, No. 4 (2017)
       
  • Adaptive Dimensionality-Reduction for Time-Stepping in Differential and
           Partial Differential Equations
    • Authors: Xing Fu; J. Nathan Kutz
      Pages: 872 - 894
      Abstract: A numerical time-stepping algorithm for differential or partial differential equations is proposed that adaptively modifies the dimensionality of the underlying modal basis expansion. Specifically, the method takes advantage of any underlying low-dimensional manifolds or subspaces in the system by using dimensionality-reduction techniques, such as the proper orthogonal decomposition, in order to adaptively represent the solution in the optimal basis modes. The method can provide significant computational savings for systems where low-dimensional manifolds are present since the reduction can lower the dimensionality of the underlying high-dimensional system by orders of magnitude. A comparison of the computational efficiency and error for this method are given showing the algorithm to be potentially of great value for high-dimensional dynamical systems simulations, especially where slow-manifold dynamics are known to arise. The method is envisioned to automatically take advantage of any potential computational saving associated with dimensionality-reduction, much as adaptive time-steppers automatically take advantage of large step sizes whenever possible.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.m1624
      Issue No: Vol. 10, No. 4 (2017)
       
  • Solving Constrained TV2L1-L2 MRI Signal Reconstruction via an Efficient
           Alternating Direction Method of Multipliers
    • Authors: Tingting Wu; David Z. W. Wang, Zhengmeng Jin, Jun Zhang
      Pages: 895 - 912
      Abstract: High order total variation (TV2) and ℓ 1 based (TV2L1) model has its advantage over the TVL1 for its ability in avoiding the staircase; and a constrained model has the advantage over its unconstrained counterpart for simplicity in estimating the parameters. In this paper, we consider solving the TV2L1 based magnetic resonance imaging (MRI) signal reconstruction problem by an efficient alternating direction method of multipliers. By sufficiently utilizing the problem's special structure, we manage to make all subproblems either possess closed-form solutions or can be solved via Fast Fourier Transforms, which makes the cost per iteration very low. Experimental results for MRI reconstruction are presented to illustrate the effectiveness of the new model and algorithm. Comparisons with its recent unconstrained counterpart are also reported.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.m1664
      Issue No: Vol. 10, No. 4 (2017)
       
  • Anisotropic Mesh Adaptation for 3D Anisotropic Diffusion Problems with
           Application to Fractured Reservoir Simulation
    • Authors: Xianping Li; Weizhang Huang
      Pages: 913 - 940
      Abstract: Anisotropic mesh adaptation is studied for linear finite element solution of 3D anisotropic diffusion problems. The í?¯?¯?-uniform mesh approach is used, where an anisotropic adaptive mesh is generated as a uniform one in the metric specified by a tensor. In addition to mesh adaptation, preservation of the maximum principle is also studied. Some new sufficient conditions for maximum principle preservation are developed, and a mesh quality measure is defined to server as a good indicator. Four different metric tensors are investigated: one is the identity matrix, one focuses on minimizing an error bound, another one on preservation of the maximum principle, while the fourth combines both. Numerical examples show that these metric tensors serve their purposes. Particularly, the fourth leads to meshes that improve the satisfaction of the maximum principle by the finite element solution while concentrating elements in regions where the error is large. Application of the anisotropic mesh adaptation to fractured reservoir simulation in petroleum engineering is also investigated, where unphysical solutions can occur and mesh adaptation can help improving the satisfaction of the maximum principle.
      PubDate: 2017-11-01T00:00:00.000Z
      DOI: 10.4208/nmtma.2017.m1625
      Issue No: Vol. 10, No. 4 (2017)
       
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


Your IP address: 34.231.21.83
 
Home (Search)
API
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-