Báo cáo toán học: "Towards universality of growth grammars: Models of Bell, Pagès, and Takenaka revisited" docx

... inactive. Original article Towards universality of growth grammars: Models of Bell, Pagès, and Takenaka revisited Winfried Kurth * Institute of Forest Biometry and Informatics, University of Göttingen, Büsgenweg ... plant models of quite different characteristics. The advantages of a formalization of models are: a greater precision of the model specificat...

Ngày tải lên: 08/08/2014, 14:22

... distinct edges e and e  of G such that e = uv and e  = u  v  are said to be noncrossing if u = u  , v = v  , and u and u  are in the same order as v and v  ; in other words, if u ≺ u  and v ≺ ... permutations of [m] and pairs of Young tableaux (P,Q) of m and with the same shape. Theorem 5. [Symmetry Theorem [Ful97, pag. 40]] If π is a permutation of [m], t...

Ngày tải lên: 07/08/2014, 21:21

... modifi- cation (i.e., editing and rewriting) of extracted sen- tences (Jing and McKeown, 1999) and the genera- tion of novel sentences based on a deeper under- standing of the concepts being described. ... (Belz and Kow, 2010). This allows a larger proportion of observed variations to be ac- counted for by the characteristics of systems under- going evaluation, and can resu...

Ngày tải lên: 30/03/2014, 21:20

... field distribution as a function of the size of the NPs. Figure 7. Energy band diagram profile and electric field distribution. (a) Energy band diagram profile and (b) electric field distribution ... properties of barrier height of various metals on n- and p-types for SiC [6, 7], and many attempts have been made to modify the contact barrier height on SiC. The effect o...

Ngày tải lên: 20/06/2014, 20:20

... the flow of products, components, materials, information and money in the form of a lifecycle process network. Each lifecycle process of the flow model has the inputs and outputs of the process ... (management of alternatives), we developed a method of recording alternatives at each step with maintenance of logical consistency using the TMS and successfully supported th...

Ngày tải lên: 20/06/2014, 21:20

... inequality of (2.11) by |x(c)|, we can obtain (2.10).  By a similar method in the proof of Theorem 1.1, applying Lemmas 2.1 and 2.3, we can obtain the following result: Theorem 2.5. Let n ∈ N and n ... contributions QZ carried out the theoretical proof and drafted the manuscript. XH participated in the design and coordination. Both of the two authors read and approved the fina...

Ngày tải lên: 20/06/2014, 21:20

... 10th- and 30th-order in Figure 1, and the choice of the pulse pair depends on the bandwidth requirement of the system and its allocated frequency range. Increasing the value of a decreases the band- width, ... Comparisons of BER performance of GFSK and PPM in the presence of synchronization errors (CM4 model, δ = D = 80 ns, ε = 0 and 2 ns). Cui and Xiong EURASIP Journa...

Ngày tải lên: 20/06/2014, 21:20

... L 2 ()). Proof. Using the Galerkin method and procedures similar to that of [22,28], we can obtain the result. □ 3 Decay of solutions In this secti on, we study the asymptotic behavior of the solutions of ... tension and f the external force. Kirchhoff [1] was the first one who introduced (1.5) to study the oscillations of stretched strings and plates, so that (1.5) is called...

Ngày tải lên: 20/06/2014, 21:20

Ngày tải lên: 05/08/2014, 09:46

Ngày tải lên: 05/08/2014, 09:46