Periódicos nacionais
Scheme for the settlement of the refugee problem; scheme for the elimination of statelessness; scheme for the indemnification of refugees from Germany. Foreign ...
1946 - Gale Group | PWE
H. B. S. Womersley, S. J. Edmonds,
... A. & A. Stephenson (1949) have proposed a general scheme for the zonation of organisms between tide-marks ( ... believe will apply to rocky coasts generally. This scheme was founded on studies of coasts in England, ... an excellent position to put forward a generalized scheme. However, while aware that we have seen a ... coasts, it appears to us that the Stephensons' scheme does not apply satisfactorily to Southern Australian coasts, ... aims at setting out our criticisms of their scheme, and proposing a modified scheme which we have ...
Tópico(s): Marine and coastal plant biology
1952 - Wiley | Journal of Ecology
Caption title. Acknowledgement dated December 4th 1740: p. [4]. Book.
0000 - Gale Group | The Making of Modern World
We shall consider homogeneous difference schemes of “through” computation (see [1]–[3]) for the non-linear parabolic equation Pu = ∂∂x(k(x,t)∂u∂x) + (x,t, ... the order of accuracy of the six-point schemes Pαhτ (see [3]) for the third boundary problem ... directly for a wide class of homogeneous difference schemes (see § 1.4), given in terms of pattern ... of approximation (with respect to x) of the scheme. Similar difference schemes (in the case of the first boundary problem) ... with the same order of approximation as the scheme in the class of solutions of the equations ...
Tópico(s): Material Science and Thermodynamics
1963 - Pergamon Press | USSR Computational Mathematics and Mathematical Physics
Report of Thames Ditton, Belgian Refugees Scheme. Thames Ditton Belgian Refugees Scheme. Belgium. BEL 6 235/2. Book.
0000 - Gale Group | ArchivesUnbound Women-War
In [1] an economical scheme is put forward for the heat conduction equation ∂u∂t = ∑α=1p ∂2u∂xα2, p⩽4. with accuracy O(h4 + ... the time step. It is a three-layer scheme. In this paper (Section 2–4) we examine two-layer schemes of O(h4 + τ2) (i.e. of order ( ... see [2]–[6]). It is shown that these schemes are absolutely stable and that for any values ... In Section 5 we consider a three-layer scheme of order (4,2) which is more economical than the scheme of [1] and is suitable for p ⩽ 4. This scheme is absolutely stable and converges for any γ ( ...
Tópico(s): Numerical methods for differential equations
1963 - Pergamon Press | USSR Computational Mathematics and Mathematical Physics
... publication from Kress Lib. Endorsed: The private traders scheme for carrying on the trade to Africa, with an answer to the company's further scheme about the said trade. Book.
0000 - Gale Group | The Making of Modern World
schemes for the numerical solution of hyperbolic systems of partial differential equations. Our main concern will be the stability conditions for these schemes although some of these schemes may be useful, especially for problems involving supersonic ... stability conditions and also the accuracy of these schemes. In Section 2 we will describe the application of the Crank-Nicholson scheme to hyperbolic systems. This method is unconditionally stable, ... out a stability analysis which shows that these schemes are unconditionally stable only if the matrix of ...
Tópico(s): Navier-Stokes equation solutions
1964 - American Mathematical Society | Mathematics of Computation
Springer Link
... publication from Kress Lib. Endorsed: The private traders scheme for carrying on the trade to Africa, with an answer to the company's further scheme about the said trade. Book.
0000 - Gale Group | SASII
... I consists of an example of an algebraic scheme which is the union of two closed, quasi- ... a structure theorem for coherent sheaves over divisorial schemes and, as an application, the proof that Theorem ... Roch", which is stated only for quasiprojective, nonsingular schemes, can be extended to arbitrary nonsingular schemes.(See the Remark on page 108 of the ... Sf is an invertible sheaf over a noncomplete scheme X, which induces ample sheaves over the irreducible ... towards Riemann-Roch-type theorems for arbitrary nonsingular schemes.To the author's knowledge, no suitable definition ...
Tópico(s): Advanced Algebra and Geometry
1967 - Mathematical Sciences Publishers | Pacific Journal of Mathematics
Little progress reported in examining scheme for relief through the blockade due to uncertainty about U.S. policy; Norway and Belgium pressing U.S. Government to agree ...
1943 - Gale Group | ArchivesUnbound Western Europe
... Scholar[2] Mats Y. T. Apelkrans, On difference schemes for hyperbolic equations with discontinuous initial values, Math. ... study of stability in C of explicit difference schemes with constant real coefficients which are stable in $ ... I. Serdjukova, Stability in C of linear difference schemes with constant real coefficients, Ž. Vyčisl. Mat. i ... ISIGoogle Scholar[13] Vidar Thomée, Stability of difference schemes in the maximum-norm, J. Differential Equations, 1 ( ... No. 4 Cross Ref Asymptotic properties of difference schemes of maximum odd order of accuracyMathematical Notes of ...
Tópico(s): Nonlinear Differential Equations Analysis
1968 - Society for Industrial and Applied Mathematics | SIAM Journal on Numerical Analysis
Lover of peace and unity in both church and state,
... of the rise, progress, and nature of the scheme for augmenting the livings of the Scots clergy. ...
0000 - Gale Group | The Making of Modern World
... 3] Peter D. Lax and , Burton Wendroff, Difference schemes for hyperbolic equations with high order of accuracy, ... Vol. 55, No. 19 Cross Ref Operator splitting scheme based on barycentric Lagrange interpolation collocation method for ... Vol. 15 Cross Ref A self-adaptive theta scheme using discontinuity aware quadrature for solving conservation laws19 ... Cross Ref A Second-Order Accurate, Operator Splitting Scheme for Reaction-Diffusion Systems in an Energetic Variational ... Vol. 48 Cross Ref An effective operator splitting scheme for two-dimensional conservative nonlocal Allen–Cahn equationApplied ...
Tópico(s): Differential Equations and Numerical Methods
1968 - Society for Industrial and Applied Mathematics | SIAM Journal on Numerical Analysis
Caption title: Whereas by this scheme there will be saved to the government above a 1000000 l. ... Book.
0000 - Gale Group | The Making of Modern World
Positive spatial difference schemes for the Boltzmann equation are derived and compared in x -y geometry. It is found that none of the positive schemes are as accurate as the most commonly used nonpositive scheme. A variable weighted difference scheme in which the weights are chosen depending on ... give results similar to those obtained with difference schemes based on the method of characteristics. A version of the variable weight scheme in which weights depend not only on the ... the highest accuracy consistent with a positive difference scheme, but it is noted that such schemes are ...
Tópico(s): Nuclear reactor physics and engineering
1969 - Elsevier BV | Journal of Computational Physics
Springer Link
Includes bibliographical references. Book.
0000 - Gale Group | Sabin
... SectionsAbout[1] Mats Y. T. Apelkrans, On difference schemes for hyperbolic equations with discontinuous initial values, Math. ... necessary and sufficient condition for stability of difference schemes for initial value problems, J. Soc. Indust. Appl. ... R. P. Fedorenko, Application of high-accuracy difference schemes to the numerical solution of hyperbolic equations, Ž. ... S. Ryabenkii, Introduction to the theory of difference schemes, Interscience, New York, 1964 Google Scholar[22] Susan G. Hahn, Stability criteria for difference schemes, Comm. Pure Appl. Math., 11 (1958), 243–255 ...
Tópico(s): Advanced Mathematical Modeling in Engineering
1969 - Society for Industrial and Applied Mathematics | SIAM Review
Book.
0000 - Gale Group | The Making of Modern World
К. М. Магомедов, А. С. Холодов,
... for partial differential equations [1–9]. In particular, schemes using the characteristic equations of gas dynamics have ... the network method. In this respect the numerical schemes of [6–8] for analyzing supersonic space flows ... of characteristics" must be retained only for numerical schemes in which characteristics curves or surfaces are used in the process of computation. Then, numerical schemes, in which characteristic reations (conditions of compatibility) are ... method. This is even more advisable because for schemes of such a kind the problem of stability ...
Tópico(s): Differential Equations and Boundary Problems
1969 - Pergamon Press | USSR Computational Mathematics and Mathematical Physics