Báo cáo toán học: "Colorings and Nowhere-Zero Flows of Graphs in Terms of Berlekamp’s Switching Game" pptx

... colorings and nowhere-zero flows, the second one uses an interpretation of a nowhere-zero point of a certain incidence matrix as a nowhere-zero coloring” of the underlying graph. Part I Berlekamp’s ... Orientations of Graphs. Combinatorica 12 (1992), 125–134. [AlTa2] N. Alon, M. Tarsi: A Nowhere-zero Point in Linear Mappings. Combin atorica 9 (1989), 393–395. the electron...

Ngày tải lên: 08/08/2014, 14:22

... the permanent of copies of matrices A . One in terms of certain orientations of A , the other in terms of colorings of A . First, in section 1.1 , orientations of matrices are defined and discussed. The ... C v of G exists. 2.3 Edge colorings of n-regular graphs The edge colorings of a graph are the vertex colorings of its line graph. Therefore, we are espec...

Ngày tải lên: 07/08/2014, 13:21

... TUNEL staining, immunohistochemistry for Fas-Ligand, the expression and immunostaining of bax and the anti-apoptotic protein bcl-2, and the ef- fects of TNF-blockade by IFX and ETC. In an addi- tional ... peroxide in 60% (v/v) methanol for 30 min. Non-specific adsorption was minimized by incubating the section in 2% (v/v) normal goat serum in PBS for 20 min. Endogenous...

Ngày tải lên: 08/08/2014, 17:20

... 1)α 4 k · ||u|| ∞ , and the proof is therefore complete. 5 Main result Using the operators N and K in Sections 3 and 4, the nonlinear integral operator Ψ defined in (10) can be expressed in abstract notation ... has received increased attention in a wide range of fields of engineering, because of its practical design applications, say, to highways and railways. The analysi...

Ngày tải lên: 20/06/2014, 20:20

... that α and β defined as in (17), (18) are lower and upper solutions for problem (1) with Λ = 0, and this does not depend on the choice of τ. Proof. Reasoning in the same way as in the proof of Proposition ... the existence of maximal and minimal solutions, and the second one establishes the existence of the greatest and the least solutions in a particular case. The...

Ngày tải lên: 20/06/2014, 20:20

... S Nehe *1 and Raghunath S Holambe 2 1 Department of Instrumentation Engineering, Pravara Rural Engineering College, Loni 413736, Maharashtra, India 2 S.G.G.S. Institute Engineering & ... helps in getting the speech information of corresponding frequency band. In order to parameterize the speech signal, the signal is decomposed into four frequency bands uniformly or in...

Ngày tải lên: 20/06/2014, 20:20

... realistic Fourier imaging, and illustrate these findings in the context of radio interferometry and MRI. Finally, we conclude in Section 5. In the context of compressed sensing, the spread spectrum ... findings in the context of radio interferometry and magnetic resonance imaging. 1 Introduction In this section we concisely recall some basics of compressed sensing, empha...

Ngày tải lên: 20/06/2014, 20:20

... derivatives from 4-aminoquinoline and cyclic b-ketoester. Tetrahedron 66:5204–5211 24. Chandra A, Singh B, Upadhyay S, Singh RM (2008) Copper-free Sonogashira coupling of 2-chloroquinolines with phenyl ... were incubated with media without compounds. After 3 days of incubation at 37°C in 5% CO 2 atmosphere, the culture medium was harvested and the virus titre of each sample...

Ngày tải lên: 20/06/2014, 20:20

... Korea 2 Department of Systems Engineering and Engineering Management, City University of Hong Kong, Hong Kong, China Authors’ contributions DHH designed and carried out the experiments and wrote the ... stoichiometry and unifor- mity of the film employed to produce ZnS thin films [12-14]. In this study, we prepared ZnS thin films using RF mag- netron sputtering. The influence...

Ngày tải lên: 20/06/2014, 21:20

... study and participated in its design and coordination. CY participated in the revision of the manuscript. LPS and YW participated in the preparation of the TiO 2 /ZrO 2 bilayer thin film. JQZ and ... full incorporation of the TiO 2 and ZrO 2 film, as shown in TEM. Figure 2 High-resolution cross-sectional TEM images of the interface between the composite thin films a...

Ngày tải lên: 20/06/2014, 21:20