Finite Di↵erence Approximation of Derivatives

... algebraic simplifications of CFGs of regular languages Other work on finite state approximations of phrase structure grammars has typically relied on arbitrary depth cutoffs in rule application ... explain the approximation algorithm we will need to recall the main aspects of the construction The states of ~4(G) are sets of dotted rules A -* a [3 where A -, a/~ is some rule...

Ngày tải lên: 08/03/2014, 07:20

... Unification grammars One of the main advantages of left-corner parsing algorithms over LR(k) based parsing algorithms is that they extend straight-forwardly to complex feature based "unification" grammars ... "unification" grammars in an efficient way is complicated, and is the primary difficulty in using left-corner methods with complex feature based grammars, van Noord (199...

Ngày tải lên: 31/03/2014, 04:20

... and G Ladas and P H Vlahos, Global attraction in a delay difference o equation, Nonlin Anal 17 (1991) 473–479 G Karakostas, Ch G Philos, and Y G Sficas, The dynamics of some discrete population models, ... solution Theorem If either (2.3) (2.4) On the Asymptotic Behavior of Solutions of a Nonlinear = and = ∞ and 169 =∞ (2.5) =0 (2.6) or then (2.1) has at least one posit...

Ngày tải lên: 06/08/2014, 05:20

... Nguyen Minh Man 64 on the asymptotic behavior of solutions of ill-posed equations associated with C-semigroups The existence of almost periodic solutions to ill-posed evolution equations of the form ... existence of periodic solutions of systems of differential equations, Duke Math J 17 (1950) 457–475 16 Nguyen Van Minh and Nguyen Minh Man, On the asymptotic...

Ngày tải lên: 06/08/2014, 05:20

... type partial difference sets [3] We can create a product of such sets with certain Latin square type partial difference sets in nonelementary abelian groups to form negative Latin square type partial ... type partial difference sets that might be used to produce different negative Latin square type partial difference sets The cyclotomic classes form negative L...

Ngày tải lên: 07/08/2014, 21:20

... (e.g (Pantel and Pennacchiotti, 2006)) to reduce noise Some of the methods are suitable for retrieval of numerical attributes However, most of them not exploit the numerical nature of the attribute ... evaluation, since the nature of the data is different from that of the QA dataset Most of the questions asked over the Web target named entities like spe...

Ngày tải lên: 20/02/2014, 04:20

... Size of the interest rate shock; k = bank’s leverage ratio (L/A) The bank’s manager is supposed to wish to determine the optimal number of put options to buy to insulate the bank against rising interest ... change in interest rates on the balance sheet is assumed to be equal to the change in the interest rate on the bond underlying the option...

Ngày tải lên: 15/03/2014, 01:20

... Kohn, and D S Tartakoff, Hypoellipticity for a sum of squares of complex vector fields with large loss of derivatives, preprint [2] J J Kohn, Hypoellipticity and loss of derivatives, Ann of Math ... 1, and γi ∈ G and γi+1 = + in neighborhoods of the supports of γi and γi , respectively Further we require ∞ C0 (U 959 HYPOELLIPTICITY AND LOSS OF DERIVAT...

Ngày tải lên: 22/03/2014, 20:20

... are the equations of the 10th- and 30th-order derivatives of the Gaussian pulse These two equations are the simplified versions of the original ones obtained from MAPLE The common factors of the ... channels The effect of synchronization errors on system performance is analyzed in Section In Section 6, the numerical results are analyzed In Section 7, the co...

Ngày tải lên: 18/06/2014, 22:20

... are the equations of the 10th- and 30th-order derivatives of the Gaussian pulse These two equations are the simplified versions of the original ones obtained from MAPLE The common factors of the ... many researchers shift their research to non-coherent UWB methods As one of the conventional non-coherent technologies, energy detection (ED) has been applied to...

Ngày tải lên: 20/06/2014, 04:20

... increasing the order of the derivatives [13] Also, the spectral separation of a pulse pair can be increased by increasing the difference of the orders of the derivatives Although the implementation of ... arrive at the same time and the only difference is the duration of the pulses in these two systems But the difference of the durations of the...

Ngày tải lên: 20/06/2014, 21:20

... series in p u x, y, t u0 pu1 p u2 p u3 ··· , v x, y, t v0 pv1 p2 v2 p3 v3 ··· 3.2 Advances in Difference Equations The approximate solutions of the original equations can be obtained by setting ... that, as the time t and the parameter α, β increase, the error between the two methods is growing Advances in Difference Equations Case In this case, the initial conditions of s...

Ngày tải lên: 21/06/2014, 05:20

... zeros But we have not succeed in reducing the condition n ≥ to n ≥ in Theorem 1.2 In the following, we will consider the zeros of other difference polynomials Using the similar method of the proof ... 2 Advances in Difference Equations be zero Recently, for an analog of Hayman conjecture for difference, Laine and Yang 8, Theorem proved the following Theorem A Let f be a ... f z...

Ngày tải lên: 21/06/2014, 05:20

... 2 Advances in Difference Equations It is worthwhile mentioning that up to now integral equations of fractional order have only been studied in the space of real functions defined on a bounded interval ... function f t, x is continuous and satisfies assumption H1 , where l t t2 Advances in Difference Equations 11 and f t, f t, t f1 as in assumption H2 We have that the funct...

Ngày tải lên: 21/06/2014, 06:20