Báo cáo toán học: "Minimum rank of matrices described by a graph or pattern over the rational, real and complex numbers" doc
Báo cáo toán học: "Minimum rank of matrices described by a graph or pattern over the rational, real and complex numbers" doc
... minimum rank of a graph over a field F was raisedat the 2006 American Institute of Mathematics workshop,“Spectra of Families of Matrices described by Graphs, Digraphs, and Sign Patterns,” and in ... Families of Matrices described by Graphs, Digraphs, and Sign Patterns,” and the authors thank AIM and NSF fortheir support. the electronic journal of combinatorics 15 (2008), #R25 1References[AHKLR] ... D and E are diagonal matrices, and B has pattern CS2. We claim that if A is real (respectively rational), then rank A ≥ 16 (respectively, rank A ≥ 18) the electronic journal of combinatorics...
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Báo cáo toán học: " New proofs of Schur-concavity for a class of symmetric functions" potx
... Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formattedPDF and full text (HTML) versions will be made available soon.New proofs of Schur-concavity for a class of ... your research in Journal of Inequalities and Applications go tohttp://www.journalofinequalitiesandapplications.com/authors/instructions/For information about other SpringerOpen publications go ... , n, (4) and established the following results by using Theorem A. NEW PROOFS OF SCHUR-CONCAVITY FOR A CLASS OF SYMMETRIC FUNCTIONS 7[2] Wang, B-Y: Foundations of majorization inequalities,...
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Báo cáo toán học: " Electrochemical performance of NixCo1-xMoO4 (0 [less than or equal to] x [less than or equal to] 1) nanowire anodes for lithium-ion batteries" pptx
... Rigaku, Tokyo, Japan). The thermal behavior of the as-prepared hydrate samples was analyzed by thermogravimetric analysis [TGA] (DTG-60H, Shimadzu, Kyoto, Japan). For TGA, the samples were heated ... have been synthesized via a hydrothermal method, followed by thermal post-annealing at 500°C for 2 h. The chemical composition of the nanowires was varied, and their morphological features and ... was ascribed to the aggregation and growth of the nanowires. Furthermore, it was found that the surface areas of the nanowires gradually increased with increasing Ni concentration because of...
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Báo cáo toán học: "Dense Packings of Equal Spheres in a Cube" pps
... develop the billiard algorithm in a more stochastic way. The hard spheres do not move along straight lines but randomly around themselves, and realize in Algorithm 1 a random walk. In Algorithm 2, the ... symmetries of the configuration and using a Gr¨obner basis package. For n =11, 12, 20, 26, the reduction has been madewith Mathematica and we also obtain a proof that the displayed graph corresponds ... we have sampled results obtained by the procedureStochastic Billiard with small values for the parameters N a and ε2(for instance N a =600, ε2=10−6 and always ε1=0.1). The best packing...
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Báo cáo toán học: "Asymptotic enumeration of labelled graphs by genus" docx
... planar quadrangulation which has no 2-cycles and has a distinguished face otherthan the root face, and 2. a quadrangulation of genus g which, after the removal of the interiors of all maximal4-cycles, ... quadrangulation of genus g and a planar quadrangulationwith a distinguished edge. Taking the latter quadrangulation and cutting along all itsmaximal 2-cycles and closing as before gives a quadrangulation ... use essen-tially the same notation and para metrization as in [8]. That paper has three parameters,u, v and t. The parameters u and v are related to r and s by u =r(2 + s)4 − rs and v =s(2...
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Báo cáo Y học: Identification of mammalian-type transglutaminase in Physarum polycephalum Evidence from the cDNA sequence and involvement of GTP in the regulation of transamidating activity potx
... and 5¢-ATAGTCGACTTAAACGACAATAACTTG-3¢.Next, the resulting DNA fragment was inserted into BamHI and SalI of pET-24d vector (Novagen), which was modified by attaching a His6tag at the N-terminus of the ... 5¢-GGACAATTACAGATTCAGTGGGAAAG-3¢ (sense, 1815–1840) and 5¢-CGAGTATACGAAATCGATGTCGTAG-3¢ (anti sense, 1729–1753) under the same conditions. In the second 5¢ RACE, first-strand cDNA was synthesized ... Kyoto, JapanTransglutaminase (TGase) catalyses the post-translationalmodification of proteins by transamidation of availableglutamine residues. While several TGase genes of fish and arthropods have...
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Báo cáo Y học: Cold adaptation of xylose isomerase from Thermus thermophilus through random PCR mutagenesis Gene cloning and protein characterization doc
... Hercules, CA, USA). The secondaryantibody was detected with a S torm 860Ò (PharmaciaAmersham, Uppsala, Sweden) using a chemi¯uorescentsubstrate ECF (Pharmacia Amersham). Data analysis wasperformed ... usingIMAGE QUANTÒ software (PharmaciaAmershamm), giving a quantitative measurement of the amount of XI in the cell-free extracts. These data were usedwith the maximum velocity ( Vmax)tocalculatekcat.Enzyme ... catalytic ce ntre or in the major substrate b inding site of enzymes c an lead to coldadaptation [38]. It has been proposed that variations in the enthalpy and entropy of conformational changes...
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Báo cáo hóa học: " Influence of GaAs Substrate Orientation on InAs Quantum Dots: Surface Morphology, Critical Thickness, and Optical Properties" docx
... trapped the In adatoms that migrated from the nearby planar GaAs (100) surface, which caused anincrease in the InAs local coverage and make the real InAsdeposition in the vicinal surface area reached ... to partial strainrelaxation inside the QD, Esurfaceis the surface energyassociated with increased surface area of the QD, and Eedgeis the energy associated with the various facets and the resulting ... interruption, a 20 nm GaAs capping layerwas grown on top of the QDs layer before the substratetemperature was raised to 600 °C for the growth of anadditional 80 nm of GaAs capping layer. Finally, anidentical...
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báo cáo hóa học:" Research Article Towards Automation 2.0: A Neurocognitive Model for Environment Recognition, Decision-Making, and Action Execution" docx
... 2(c), the internal states of Agent B and Agent C are shown at the moment they receive Agent A s request. The internal states of Agent B show a high level of fear and moderate levels of pride and ... [7–11]. Taking these concepts as a basis for the development of technical systems appears to be a very reasonable idea:animals and humans have the capability to perceive and (re-)act on their environment ... actuators are installed and take care of user comfort and safety. The installations in a buildingare separated into different industries, which have grownhistorically and have no tradition in achieving...
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Báo cáo toán học: "Low Rank Co-Diagonal Matrices and Ramsey Graphs" doc
... off the diagonal are not zero (we shall call these matrices co-diagonal over R). We define the rank of a matrix over a ring, and show that low rank co-diagonal matrices over Z6naturally correspond ... integer. We say, that n ×n matrix A over R has rank 0 if all of the elements of A are 0. Otherwise, the rank over the ring R of matrix A is the smallest r, such that A canbewrittenas A = BC over R, ... is a field. The following property of the usual matrix rank also holds:Lemma 3 Let R be a ring and let A and A be two n × n matrices. Then rank R (A + A ) ≤ rank R (A) +rank R (A ).Proof:...
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