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  • Articles  (1,704)
  • Hindawi  (1,704)
  • American Meteorological Society
  • Copernicus
  • Molecular Diversity Preservation International
  • National Research Council Canada (NRC)
  • 2020-2022
  • 2010-2014  (1,704)
  • 1960-1964
  • 2012  (1,704)
  • 1964
  • 1960
  • Journal of Applied Mathematics  (438)
  • Discrete Dynamics in Nature and Society  (176)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-10. Published 2012 Jan 01. doi: 10.1155/2012/147520.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-10. Published 2012 Jan 01. doi: 10.1155/2012/985152.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-11. Published 2012 Jan 01. doi: 10.1155/2012/494818.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-13. Published 2012 Jan 01. doi: 10.1155/2012/176270.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-14. Published 2012 Jan 01. doi: 10.1155/2012/203842.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-5. Published 2012 Jan 01. doi: 10.1155/2012/245910.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-5. Published 2012 Jan 01. doi: 10.1155/2012/248146.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-5. Published 2012 Jan 01. doi: 10.1155/2012/675830.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-6. Published 2012 Jan 01. doi: 10.1155/2012/287582.  (1)
  • International Journal of Quality, Statistics, and Reliability. 2012; 2012: 1-6. Published 2012 Jan 01. doi: 10.1155/2012/760687.  (1)
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  • Mathematics  (1,704)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Collection
  • Articles  (1,704)
Source
Publisher
  • Hindawi  (1,704)
  • American Meteorological Society
  • Copernicus
  • Molecular Diversity Preservation International
  • National Research Council Canada (NRC)
Years
  • 2020-2022
  • 2010-2014  (1,704)
  • 1960-1964
Year
Journal
Topic
  • Mathematics  (1,704)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
  • 1
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    Multipath Adaptive Tabu Search for a Vehicle Control Problem (2012)
    Hindawi
    Details
    Publication Date: 2012-02-24
    Description: Tabu search has become acceptable worldwide as one of the most efficient intelligent searches applied to various real-world problems. There have been different modifications made to the generic tabu search in recent years to achieve better performances. Among those reviewed in the introduction of this paper, the adaptive tabu search (ATS) has incorporated the backtracking and the adaptive search radius mechanisms that help accelerate the search and release it from a local solution lock. The paper explains an enhancement made to the ATS to accomplish multipath ATS (MATS) algorithms. Performances of the ATS and the MATS are evaluated using surface optimization problems, and results are presented in the paper. Finally, the MATS is applied to solve a real-world vehicle control problem.
    Print ISSN: 1110-757X
    Electronic ISSN: 1687-0042
    Topics: Mathematics
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  • 2
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    Multiple Periodic Solutions of Delayed Predator-Prey Systems with Type IV Functional Responses on Time Scales (2012)
    Hindawi
    Details
    Publication Date: 2012-03-13
    Description: With the help of a continuation theorem based on Gaines and Mawhin's coincidence degree, easily verifiable criteria are established for the existence of multiple positive periodic solutions of delayed predator-prey systems with type IV functional responses on time scales. Our results not only unify the existing ones but also widen the range of applications.
    Print ISSN: 1026-0226
    Electronic ISSN: 1607-887X
    Topics: Mathematics
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  • 3
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    On the Dynamics of a Higher-Order Difference Equation (2012)
    Hindawi
    Details
    Publication Date: 2012-03-16
    Description: This paper deals with the investigation of the following more general rational difference equation: yn+1=αyn/(β+γ∑i=0kyn-(2i+1)p∏i=0kyn-(2i+1)), n=0,1,2,…, where α,β,γ,p∈(0,∞) with the initial conditions x0,x-1,…,x-2k,x-2k-1∈(0,∞). We investigate the existence of the equilibrium points of the considered equation and then study their local and global stability. Also, some results related to the oscillation and the permanence of the considered equation have been presented.
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    Topics: Mathematics
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  • 4
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    Synchronization of Two Rank-One Chaotic Systems without and with Delay via Linear Delayed Feedback Control (2012)
    Hindawi
    Details
    Publication Date: 2012-03-16
    Description: This paper illustrates the presence of chaos in rank-one chaotic systems with delay via a binary test (called 0-1 test) for chaos. Chaotic synchronization between two rank-one chaotic systems without and with delay is achieved by means of Lyapunov functional and linear delayed feedback control method. Numerical simulations are implemented to verify the effectiveness of the proposed chaos synchronization scheme.
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    Topics: Mathematics
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  • 5
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    On a Generalized Hyers-Ulam Stability of Trigonometric Functional Equations (2012)
    Hindawi
    Details
    Publication Date: 2012-03-16
    Description: Let G be an Abelian group, let ℂ be the field of complex numbers, and let f,g:G→ℂ. We consider the generalized Hyers-Ulam stability for a class of trigonometric functional inequalities, |f(x-y)-f(x)g(y)+g(x)f(y)|≤ψ(y),  |g(x-y)-g(x)g(y)-f(x)f(y)|≤ψ(y), where ψ:G→ℝ is an arbitrary nonnegative function.
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    Topics: Mathematics
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  • 6
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    On the Solution of Double-Diffusive Convective Flow due to a Cone by a Linearization Method (2012)
    Hindawi
    Details
    Publication Date: 2012-02-08
    Description: The paper details the use of a nonperturbation successive linearization method to solve the coupled nonlinear boundary value problem due to double-diffusive convection from an inverted cone. Diffusion-thermo and thermal-diffusion effects have been taken into account. The governing partial differential equations are transformed into ordinary differential equations using a suitable similarity transformation. The SLM is based on successively linearizing the governing nonlinear boundary layer equations and solving the resulting higher-order deformation equations using spectral methods. The results are compared with the limited cases from previous studies and results obtained using the Matlab inbuilt bvp4c numerical algorithm and a shooting technique that uses Runge-Kutta-Fehlberg (RKF45) and Newton-Raphson schemes. These comparisons reveal the robustness and validate the usage of the linearisation method technique. The results show that the nonperturbation technique in combination with the Chebyshev spectral collocation method is an efficient numerical algorithm with assured convergence that serves as an alternative to numerical methods for solving nonlinear boundary value problems.
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    Topics: Mathematics
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  • 7
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    Research on the Human Dynamics in Mobile Communities Based on Social Identity (2012)
    Hindawi
    Details
    Publication Date: 2012-02-10
    Description: Through analyzing the data about the releases, comment, and forwarding of 120,000 microblog messages in a year, this paper finds out that the intervals between information releases and comment follow a power law; besides, the analysis of data in each 24 hours reveals obvious differences between microblogging and website visit, email, instant communication, and the use of mobile phone, reflecting how people use fragments of time via mobile internet technology. The paper points out the significant influence of the user's activity on the intervals of information releases and thus demonstrates a positive correlation between the activity and the power exponent. The paper also points out that user's activity is influenced by social identity in a positive way. The simulation results based on the social identity mechanism fit well with the actual data, which indicates that this mechanism is a reasonable way to explain people's behavior in the mobile Internet.
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    Topics: Mathematics
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  • 8
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    MHD Flow of an Incompressible Viscous Fluid through Convergent or Divergent Channels in Presence of a High Magnetic Field (2012)
    Hindawi
    Details
    Publication Date: 2012-02-10
    Description: The flow of an incompressible electrically conducting viscous fluid in convergent or divergent channels under the influence of an externally applied homogeneous magnetic field is studied both analytically and numerically. Navier-Stokes equations of fluid mechanics and Maxwell’s electromagnetism equations are reduced into highly non-linear ordinary differential equation. The resulting non-linear equation has been solved analytically using a very efficient technique, namely, differential transform method (DTM). The DTM solution is compared with the results obtained by a numerical method (shooting method, coupled with fourth-order Runge-Kutta scheme). The plots have revealed the physical characteristics of flow by changing angles of the channel, Hartmann and Reynolds numbers.
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  • 9
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    Hidden and Not So Hidden Symmetries (2012)
    Hindawi
    Details
    Publication Date: 2012-02-13
    Description: Hidden symmetries entered the literature in the late Eighties when it was observed that there could be gain of Lie point symmetry in the reduction of order of an ordinary differential equation. Subsequently the reverse process was also observed. Such symmetries were termed “hidden”. In each case the source of the “new” symmetry was a contact symmetry or a nonlocal symmetry, that is, a symmetry with one or more of the coefficient functions containing an integral. Recent work by Abraham-Shrauner and Govinder (2006) on the reduction of partial differential equations demonstrates that it is possible for these “hidden” symmetries to have a point origin. In this paper we show that the same phenomenon can be observed in the reduction of ordinary differential equations and in a sense loosen the interpretation of hidden symmetries.
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    Topics: Mathematics
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  • 10
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    Analytical and Semi-Analytical Treatment of the Satellite Motion in a Resisting Medium (2012)
    Hindawi
    Details
    Publication Date: 2012-02-13
    Description: The orbital dynamics of an artificial satellite in the Earth's atmosphere is considered. An analytic first-order atmospheric drag theory is developed using Lagrange's planetary equations. The short periodic perturbations due to the geopotential of all orbital elements are evaluated. And to construct a second-order analytical theory, the equations of motion become very complicated to be integrated analytically; thus we are forced to integrate them numerically using the method of Runge-Kutta of fourth order. The validity of the theory is checked on the already decayed Indian satellite ROHINI where its data are available.
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    Topics: Mathematics
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