count number of elements of an array
Báo cáo toán học: "Counting the number of elements in the ˜ mutation classes of An −quiver" ppt
... realization of a quiver of type An 1 is simply a cyclic arrangement of elements in B with a total of n vertices For example, the quiver in Example 2.9 consists of five elements of B, three of which ... to count the number of possible ˜ realizations of quivers in a mutation class of An 1 Since the two realizations of a quiver may coincide, we will need an additional argument to count the number ... 3, s1 = and s2 = ˜ In [2] an explicit description of the mutation classes of quivers of type An 1 and, ˜ moreover, the derived equivalence classes of cluster-tilted algebras of type An 1 is given...
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Tài liệu Exporting the Results of a Query to an Array pdf
... Math.Max((dt.Rows .Count - startRow) + 1, 0); // If the number of rows to export is specified as greater than 0, // set the number of rows to export as the lesser of the number // specified and the number of ... were specified, set the number of columns to the // number of columns in the table; otherwise, set the number of // columns to the number of items in the specified columns array int nCols = (colName ... Returns an array of field values corresponding to the values in the columns and rows selected from the table dt The DataTable to convert to the array rowCount The number of rows to export to the array...
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Tài liệu Báo cáo khoa học: AcmA of Lactococcus lactis is an N-acetylglucosaminidase with an optimal number of LysM domains for proper functioning ppt
... masses (kDa) of standard proteins (lane M) are shown in the left margin Below the gel the lower part of lanes 5, and of the same gel is shown after week of renaturation The right half of the figure ... Overexpression and purification of the active-site domain of AcmA (A) SDS ⁄ 12.5% PAGE of cell extracts of 10 lL of E coli BL21(DE3) (pETAcmA) (lane 3) induced for h with IPTG Lane 2: 10 lL of purified ... fractions and supernatants of enzymes A2 and A1 (results not shown) Cell lysis upon expression of the two new AcmA variants was compared with lysis by variants A2 and A1 by measuring the amounts of...
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Health and Quality of Life Outcomes BioMed Central Review Open Access An increasing number of pdf
... on the number of criteria met, but on the importance and balance of multiple criteria Our aim was to summarise the level of satisfaction of each item in the sample of papers examined and not ... Whitehead C, Fonbuena P, Forman SJ: The meaning of quality of life for bone marrow transplant survivors Part The impact of bone marrow transplant on quality of life Cancer Nurs 1992, 15:153-60 Fitch MI: ... the meaning of end of life experience and inside the discussion on palliative care philosophy The increase of the qualitative research concerning the significance of need and the components of satisfaction...
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Báo cáo hóa học: " Research Article Improving 2D-Log-Number-System Representations by Use of an Optimal Base" doc
... the range of b is known, the value of a can be found for all valid values of b From this, the integer range of a can be found from the maximum and minimum values of b The binary word length of ... could be summed at the end of the array using an adder tree for example The biggest advantage of the use of more than one digit for the operands is that one can obtain extremely accurate representations ... limited by this range as well as the number of digits 3.2 Defining a finite limit for the second base We can limit the potential range of what could be considered to be an optimal value by analyzing the...
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Báo cáo hóa học: " Combination of Polymer Technology and Carbon Nanotube Array for the Development of an Effective Drug Delivery System at Cellular Leve" pptx
... Nikon) and with NIS Elements imaging software Number of cells and neurite length have been monitored with the image analysis software ‘‘ImageJ’’ (freely downloadable from the National Institutes of ... Nanotransducer for In Vivo gene thErapy, STRP 033378) project, co-financed by the 6FP of the European Commission, and by the IIT (Italian Institute of Technology) Network Authors gratefully thank ... entrapment and/or delivery of a variety of biological agents [8] Alginate is a co-polymer extracted from some types of brown algae and it is made up of two uronic acids: D-mannuronic acid and L-guluronic...
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Báo cáo hóa học: " Research Article TSI Finders for Estimation of the Location of an Interference Source Using an Ariborne Array" docx
... desired performance level The technique uses any one of the TSI rays to identify its angle of arrival in azimuth plane as well as in elevation plane and then locates the position of the transmitter ... lag of 30 (see Figure 4(a)) as a function of the number of samples used in estimating the covariance In Figure 6, the number of samples used has been expressed as a multiple of the dimension of ... investigation of the performance of the TSI finder as a function of the sample size used, we have included (Figure 6) a Monte Carlo simulation of scenario Ninety simulations were run, and an estimate of...
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Báo cáo toán học: "An Asymptotic Expansion for the Number of Permutations with a Certain Number of Inversions" docx
... and using the symmetry of the integrand For an integer n ≥ and real numbers a, b and x, let b n I(n, x, a, b) := a =2 sin t xtn3/2 cos sin t dt and π (where all discontinuities of the integrand ... =2 the electronic journal of combinatorics (2000), #R50 and, hence, for all n ≥ and all real numbers x, |I(n, x, 3n−0.5 , π/2)| ≤ e n (8) For all integers and all real numbers t with sin t = 0, ... We can replace the o(n−7/2 ) error term in the asymptotic expansion of B(n)/n! with O(n−9/2 ln19 n) The following extension of Theorem (the case m = 3) giving a complete asymptotic expansion of...
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Báo cáo toán học: "An improved bound on the minimal number of edges in color-critical graphs" pot
... H(G) does not exceed the number of connected components of its low-vertex subgraph L(G) Proof of Theorem Let L(G) and H(G) be the low-vertex and the high-vertex subgraphs of G, respectively Denote ... ingredient of our proof is the following result of Stiebitz Lemma ([5]) Let G be a k-critical graph containing at least one vertex of degree k − Then the number of connected components of its high-vertex ... journal of combinatorics (1998), #R4 Let r be the number of connected components of H(G), then trivially |E(H(G))| ≥ nH − r (2) Also, by Lemma 3, the number of connected components of L(G) is...
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Báo cáo toán học: " ASYMPTOTICS OF THE NUMBER OF k-WORDS WITH AN -DESCENT" pot
... descent ≤ , and denote w(k, ; n) = |W (k, ; n)| Thus W (k; n) = W (k, k; n), and w(k, k; n) = kn Recall: given two sequences {an } and {bn } of real numbers, we denote an bn (or n→∞ an simply an bn ... − 1)! Standard and Semistandard Tableaux Let λ n (i.e λ is a partition of n) A tableau of shape λ, filled with 1, · · · , n, is standard if the numbers in it are increasing both in rows and in ... Qλ ), where Pλ and Qλ are tableaux of same shape λ, Qλ is standard and Pλ is k-semistandard This gives a bijection W (k; n) ↔ {(Pλ , Qλ ) λ ∈ ∧k (n), Pλ is k-semistandard, Qλ is standard} Moreover,...
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Báo cáo toán học: "On the number of permutations admitting an m-th root" pptx
... to a constant factor, and the series of coefficients rn (m) converges * By transfer theorem, we mean analysis of singularities that consists in deducing the asymptotics of the coefficients of a power ... adjective rectangular is chosen because of the form of the Ferrers diagram associated to such a permutation : a sequence of rectangular blocks of height greater than 1) Now, the standard way to ... terms of commutative algebra, the radical of an ideal I is the set of all elements of the ring some positive power of which belongs to I; in the present situation, q(m) is the positive generator of...
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Báo cáo toán học: "The Minor Crossing Number of Graphs with an Excluded Minor" pot
... occurrence of a vertex of G in a bag of D Consider a vertex x of G in bag X and a distinct vertex y of G in bag Y Connect x and y by an edge in G if and only if X = Y or XY is an edge of D (G is ... Pinontoan and R Bruce Richter Crossing numbers of sequences of graphs II Planar tiles J Graph Theory, 42(4):332–341, 2003 [33] Benny Pinontoan and R Bruce Richter Crossing numbers of sequences of ... edge vw of G If v and w are in a common bag X of D, then v and w are in every bag Xe of D1 Otherwise, v ∈ X and w ∈ Y for some edge e = XY of D, in which case v ∈ Xe , w ∈ Ye , and Xe Ye is an edge...
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Báo cáo toán học: "The number of elements in the mutation class of a quiver of type Dn Aslak Bakke Buan" pps
... Catalan number C(i) can be defined as the number of triangulations of an i+2-gon with i − diagonals It is given by C(i) = 2i i+1 i The number of equivalence classes in the mutation class of any ... D5 case The number of triangulations of punctured polygons In this section we want to find an explicit formula for the number of triangulations of punctured polygons up to rotation and tags Let ... there and exercise 7.112 b in [St]) The number of planar trees with n + nodes and the number of planar binary trees with n + leaves are both given by the n’th Catalan number It follows that the number...
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Báo cáo toán hoc:" Almost all trees have an even number of independent sets " ppt
... which leads to an asymptotic formula for the number of rooted trees on n vertices whose number of independent sets is odd by means of singularity analysis (see for instance [6]): this number is asymptotically ... class of all trees) with a given number of independent sets It is an open conjecture [13] that all but finitely many positive integers can be represented as the number of independent sets of some ... 1983 [12] P Kirschenhofer, H Prodinger, and R F Tichy Fibonacci numbers of graphs III Planted plane trees In Fibonacci numbers and their applications (Patras, 1984), volume 28 of Math Appl., pages...
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Báo cáo toán học: "Trees with an On-Line Degree Ramsey Number of Fou" pdf
... that Builder can force M Then, the 3-3 and 2-3 Branching Lemmas hold Proof The proof of the 3-3 Branching Lemma mirrors the proof of the 2-2 Branching Lemma (following the proof of Claim 3.6), ... assigns images under k of elements of V (T ) as adjacency warrants This process ends exactly when U = T Builder thus can create a red copy of T and hence of T Our proof of Theorem 3.1 is finally ... replaces X throughout and L replaces the isolated edge ab, with the vertices m, n of M and c of L replacing the vertices x, y of X and a of ab, respectively; and (ii) invocation of Claim 3.6 is replaced...
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Báo cáo sinh học: "An approximate theory of selection assuming a finite number of quantitative trait loci" docx
... generations (t) and (t + 1) can be derived for the mean and the variance covariance matrix of gene effects (Lande, 1976; Chevalet, 1988): - - - mean effects within g’s: population variance of the structure: ... mean values and standard deviations over replicated runs of the following criteria: mean breeding value; genetic and genic variances, effective numbers of loci (equations [17] and [18] below) and ... of (aTLs (equation (20!) The number of (!TLs Recent results of QTL detection, mainly in plants, suggest a rather small number of loci contributing a significant part to the genetic variance of...
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Báo cáo y học: "Identification of an effective siRNA target site and functional regulatory elements, within the hepatitis B virus posttranscriptional regulatory element" ppt
... blot analysis with primary antibodies: anti-GAPDH, anti-firefly luciferase protein (anti-Luc) and antiPoly A binding protein (anti-PABP) and the horseradish peroxidase-conjugated secondary antibody ... real-time-PCR analysis and participated in the manuscript YP participated in the design of the study and analysis of the quantitative realtime-PCR study CMB conceived of the study, and participated ... Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand 2Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand 3Center of Excellence...
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Báo cáo sinh học: "An FPT haplotyping algorithm on pedigrees with a small number of sites" ppsx
... denoted by h1u and h2u, which are vectors of and 1’s of length m, where m is the number of sites The genotype of u, gu, is a vector of 0’s, 1’s and 2’s of length m, where gu[i] = means h1u[i] = ... parents Therefore, the number of positive edges is linear in the number of vertices The number of negative edges is also linear to the number of vertices Thus the number of edges in the pedigree ... event and uij and vij have the same label (both red or both green), then sites i and j of c must be both homozygous or both heterozygous based on the Mendelian law of inheritance Because sites i and...
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Báo cáo sinh học: "A comparison between Poisson and zero-inflated Poisson regression models with an application to number of black spots in Corriedale sheep" doc
... from an excess of zeros Zero-inflated models for count data in animal breeding have been discussed by Gianola [15] and used by Rodrigues-Motta and collaborators [27] in an analysis of the number of ... exploratory analysis [16,24], the age of animals appears to be a main source of variability of the number of spots, with flock and year having marginal effects Modelling can proceed along the lines of ... model only in 172 out of 400 comparisons (43% of the time) Poisson and ZIP models for spots in sheep 387 Table IV Mean and standard deviation (in 100 runs) of the harmonic mean of sampled log-likelihoods...
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Báo cáo sinh học: " Model of invasion of a population by transposable elements presenting an asymmetric effect in gametes" docx
... process This variance therefore deserves being analyzed in which Var(X’) designates the variance in the number Analysis of the variance Var(i, j) be the variance of the number of elements of gametes ... research has proved the existence of self-regulation mechanisms by which the probability of transposition of an element decreases as a function of the number of elements of the same family present in ... to a generalization of the model of Ginzburg et al (1984) for a large number of transposition sites The equations for the mean and the variance of the number of elements at equilibrium depend on...
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