a suficient condition for the existence of periodic solution for a reation diffusion equation with infinite delay

Tài liệu Báo cáo Y học: Analyses of the CYP11B gene family in the guinea pig suggest the existence of a primordial CYP11B gene with aldosterone synthase activity docx

... showing it to be the aldosterone synthase of the guinea pig It was interesting to note that CYP11B2 of the guinea pig had a considerably higher enzymatic activity in terms of 11b-hydroxylated ... 11bhydroxylase activity of CYP11B1 was strongly reduced (Fig 5), whereas that of the aldosterone synthase was basically unaffected, while the 18-hydroxlase and oxidase activity was also greatly ... same data as Graur In contrast, the distance matrix algorithms again placed the guinea pig together with artiodactyls and primates, thus supporting paraphyly albeit only with bootstrapping probabilities...

Báo cáo " Boundedness and Stability for a nonlinear difference equation with multiple delay " docx

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INFLUENTIAL MARKETING: A NEW DIRECT MARKETING STRATEGY ADDRESSING THE EXISTENCE OF VOLUNTARY BUYERS doc

... APPROVAL Name: Lily Yi-Ting Lai Degree: Master of Science Title of Thesis: Influential Marketing: A New Direct Marketing Strategy Addressing the Existence of Voluntary Buyers Examining ... really the case? Remember that ultimately, the goal of a direct marketing campaign is to maximize the net profit An implicit assumption made by the traditional direct marketing paradigm is that ... On the other hand, (MT – MC) – (RT – RC) measures the model value of M relative to the marketing value of random marketing A model of a large marketing value has a high PIC A model of a large...

Đề tài "Stretched exponential estimates on growth of the number of periodic points for prevalent diffeomorphisms I " potx

... of Diffr (M ) Another justification for considering diffeomorphisms in Euclidean space is that the problem of exponential/ superexponential growth of the number of periodic points Pn (f ) for a prevalent ... exponential function of the period The notion of a flat critical point used in [MMS] is a nonstandard one from the point of view of singularity theory; in particular, if is a critical point, then the ... of initial points of I n ˜ × Measure of periodicity × Measure of hyperbolicity −1 The first term on the right-hand side of (3.24) is of order γn (up to an exponential function in n) In Section...

the scientific explanation for the existence of vampires

... life Since they did not know muchabout disease their lack of knowledge of diseases and their lack of medical practitionersin these remote areas would give the perfect opportunity for their superstitious ... stories described the vampires as giving off a greenish glow Victims ofthis disease are likely to be deformed in other ways as well but usually in the facial area.Because of the skin lesions suffered ... Searchingfor an explanation without any medical knowledge the one thing that would make senseto them would be that a vampire was on the loose while the fact that the town could be inthe middle of an...

Báo cáo hóa học: " Research Article The Existence of Positive Solution to a Nonlinear Fractional Differential Equation with Integral Boundary Conditions" potx

... Vasundhara Devi, Theory of Fractional Dynamic Systems, Cambridge Academic, Cambridge, UK, 2009 V Lakshmikantham and A S Vatsala, “Basic theory of fractional diﬀerential equations,” Nonlinear Analysis ... 2391–2396, 2009 17 H A H Salem, “On the nonlinear Hammerstein integral equations in Banach spaces and application to the boundary value problem of fractional order,” Mathematical and Computer Modelling, ... Zhang, The existence of a positive solution for a nonlinear fractional diﬀerential equation, ” Journal of Mathematical Analysis and Applications, vol 252, no 2, pp 804–812, 2000 22 S Zhang, “Existence...

Báo cáo hóa học: " Research Article On the Existence of Solutions for Dynamic Boundary Value Problems under Barrier Strips Condition" doc

... discussions were for boundary value problems of ordinary diﬀerential equation This paper studies the existence of solutions for the nonlinear two-point dynamic boundary value problem on time ... solution x t to the boundary value problem xΔΔ t λf t, xσ t , xΔ t , xΔ a 0, t ∈ a, ρ2 b Ì, x b Then the boundary value problem 1.2 has at least one solution in C2 a, b Proof The proof is the ... On Green’s functions and positive solutions for boundary value problems on time scales,” Journal of Computational and Applied Mathematics, vol 141, no 1-2, pp 75–99, 2002, Special issue on “Dynamic...

Báo cáo hóa học: " Research Article The Existence of Periodic Solutions for Non-Autonomous Differential Delay Equations via Minimax Methods" potx

... ones to the problem of finding periodic solutions for a related system of ordinary differential equations Then variational method was applied to study the related systems and the existence of periodic ... Academy of Sciences of the United States of America, vol 40, no 4, pp 708–713, 1954 T Furumochi, Existence of periodic solutions of one-dimensional differential -delay equations, ” The Tˆ hoku Mathematical ... of 1.2 Under the superlinear conditions 1.5 , there is no twist condition for f, which brings difficulty to the study of the existence of periodic solutions of 1.4 But we can use minimax methods...

Báo cáo hoa học: " Research Article Necessary and Sufﬁcient Conditions for the Existence of Positive Solution for Singular Boundary Value Problems on Time Scales" pot

... suﬃcient and necessary conditions to guarantee the existence of positive solutions for singular boundary value problem on time scales So it is interesting and important to discuss these problems ... necessary and suﬃcient condition for the existence of Cld 0, T as well as Cld 0, T positive solutions is given by constructing upper and lower solutions and with the maximum principle The nonlinearity ... new tools and methods to investigate the existence of positive solutions for problem 1.1 with one of the above boundary conditions The time scale related notations adopted in this paper can be found,...

Báo cáo hóa học: "Research Article Existence of Periodic Solution for a Nonlinear Fractional Differential Equ" potx

... Problems, vol 2009, Article ID 708576, 11 pages, 2009 M Benchohra, A Cabada, and D Seba, “An existence result for nonlinear fractional diﬀerential equations on Banach spaces,” Boundary Value Problems, ... Diethelm and N J Ford, “Analysis of fractional diﬀerential equations,” Journal of Mathematical Analysis and Applications, vol 265, no 2, pp 229–248, 2002 16 K Diethelm and G Walz, “Numerical solution ... M Vinagre, P O’Leary, and L Dorˇ ak, “Analogue realizations of fractionalaˇ c´ order controllers,” Nonlinear Dynamics, vol 29, no 1–4, pp 281–296, 2002 20 D Araya and C Lizama, “Almost automorphic...

Báo cáo hóa học: "Research Article Existence of Periodic Solutions for a Delayed Ratio-Dependent Three-Species Predator-Prey Diffusion System on Time Scales" pot

... Bohner and A Peterson, Dynamic Equations on Time Scales: An Introduction with Applications, Birkh¨ user, Boston, Mass, USA, 2001 a 14 E R Kaufmann and Y N Raffoul, Periodic solutions for a neutral ... nonlinear dynamical equation on a time scale,” Journal of Mathematical Analysis and Applications, vol 319, no 1, pp 315–325, 2006 15 R E Gaines and J L Mawhin, Coincidence Degree, and Nonlinear ... of differential and difference equations, people have done a lot of research about dynamic equations on time scales The principle aim of this paper is to systematically unify the existence of periodic...

Báo cáo hóa học: " Research Article Properties of Positive Solution for Nonlocal Reaction-Diffusion Equation with Nonlocal Boundary" potx

... method for investigating the rate and profile of blowup of solutions of diffusion equations with nonlocal reaction terms He obtained the uniform blow-up rate and blowup profile for large classes of equations ... investigate problem with nonlocal source and nonlocal boundary, which is a combination of the work of [4] and that of [6–8, 12] Precisely, we are interested in the combined effect of the nonlocal nonlinear ... the damping term and the nonlocal boundary upon the behavior of the solution of problem (1.1) We will give the conditions of existence and nonexistence of global solution for (1.1), and establish...

Báo cáo hóa học: "OSCILLATION OF A LOGISTIC DIFFERENCE EQUATION WITH SEVERAL DELAYS" ppt

... theory with applications in nonlinear analysis., Journal of Computational and Applied Mathematics 113 (2000), no 1-2, 255–265 , Oscillation properties of a logistic equation with several delays, ... Israel E-mail address: brznsky@cs.bgu.ac.il E Braverman: Department of Mathematics and Statistics, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada E-mail address: ... Diﬀerence Equations, Mathematics and Its Applications, vol 404, Kluwer Academic, Dordrecht, 1997 [3] L Berezansky and E Braverman, On oscillation of a logistic equation with several delays, ﬁxed...

Báo cáo hóa học: "ON THE EXISTENCE OF POSITIVE SOLUTION FOR AN ELLIPTIC EQUATION OF KIRCHHOFF TYPE VIA MOSER ITERATION METHOD" pot

... (3.3) Proof of Theorem 1.1 In the proof of Theorem 1.1, we need the following estimate Lemma 4.1 If uλ is a solution (positive) of problem T0 , then uλ ≤ C for all λ ≥ 0, where C > is a constant that ... following meanings: L is the length of the string, h is the area of cross-section, E is the Young modulus of the material, ρ is the mass density and P0 is the initial tension Problem (1.2) began to ... that positive solution of truncated problem is a positive solution of (P)λ In Sections and 3, we study the truncated problem and in Section 4, we prove an existence result for problem (P)λ The...

Báo cáo toán học: "A simple proof for the existence of exponentially balanced Gray codes" ppsx

... b(i) is the number of times the integer i occurs in the sequence T Note that the sum of all b(i), ≤ i ≤ n, is equal to l, the length of T A simple proof for the existence of exponentially balanced ... like the proof in [10], but much simpler the electronic journal of combinatorics 12 (2005), #N19 Proof: We accomplish the proof using the principle of mathematical induction It is obvious that Gray ... exists an n-bit exponentially balanced Gray code, and if n is a power of two, there exists an n-bit totally balanced Gray code Here, we shall present a proof using Theorem 2.1 The proof is constructive...

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