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• The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

#### Card-Shuffling Analysis with Weighted Rank Distance

Wu, Kung-sheng 24 June 2007 (has links)
In this paper, we cite two weighted rank distances (Wilcoxon rank and Log rank) to analyze how many times must a deck of 52 cards be shuffled to become sufficiently randomized. Bayer and Diaconis (1992) used the variation distance as a measure of randomness to analyze the card-shuffling. Lin (2006) used the deviation distance to analyze card-shuffling without complicated mathematics formulas. We provide two new ideas to measure the distance for card-shuffling analysis.
2

#### The Relationship Between the Minimal Rank of a Tree and the Rank-Spreads of the Vertices and Edges

Sinkovic, John Henry 01 December 2006 (has links) (PDF)
Let F be a field, G = (V,E) be an undirected graph on n vertices, and let S(F,G) be the set of all symmetric n × n matrices whose nonzero off-diagonal entries occur in exactly the positions corresponding to the edges of G. Let mr(F,G)be the minimum rank over all matrices in S(F,G). We give a field independent proof of a well-known result that for a tree the sum of its path cover number and minimal rank is equal to the number of vertices in the tree. The rank-spread of a vertex v of G is the difference between the minimal ranks of G and G - v, the graph obtained by deleting v and all its incident edges from G. The rank-spread of an edge is defined similarly. We derive a formula that expresses the minimal rank of a tree as the difference of sums of rank-spreads, the first being the sum of the rank-spreads of all the vertices and the second the sum of the rank-spreads of all the edges. We show that this is a special case of a more general inequality for all graphs. In proving the above results we explore how rank-spreads change as graphs are vertex-summed.
3

#### Comparación de niveles de Rankl en fluido crevicular gingival previo y posterior a blanqueamiento de dientes no vitales con peróxido de hidrógeno al 35% y peróxido de carbamida al 37%

Sánchez San Juan, Francisca January 2016 (has links)
4

#### On the nature of academic rankings: The relationship between the academic rankings’ quality of education and the curriculum in Ph.D. C&I programs in America

Pang, Xing 01 December 2020 (has links)
No description available.
5

#### Statistical Consistency of Ranking:Bipartite and Multipartite Cases

Uematsu, Kazuki 30 August 2012 (has links)
No description available.
6

#### Rational Realizations of the Minimum Rank of a Sign Pattern Matrix

Koyuncu, Selcuk 02 February 2006 (has links)
A sign pattern matrix is a matrix whose entries are from the set {+,-,0}. The minimum rank of a sign pattern matrix A is the minimum of the rank of the real matrices whose entries have signs equal to the corresponding entries of A. It is conjectured that the minimum rank of every sign pattern matrix can be realized by a rational matrix. The equivalence of this conjecture to several seemingly unrelated statements are established. For some special cases, such as when A is entrywise nonzero, or the minimum rank of A is at most 2, or the minimum rank of A is at least n - 1,(where A is mxn), the conjecture is shown to hold.Connections between this conjecture and the existence of positive rational solutions of certain systems of homogeneous quadratic polynomial equations with each coefficient equal to either -1 or 1 are explored. Sign patterns that almost require unique rank are also investigated.
7

#### Royal and non-royal women in Achaemenid Persia (559 - 331 B.C.)

Brosius, Maria January 1991 (has links)
No description available.
8

#### Criteria Considered for Promotion in Rank of Junior College Non-Degree Technical and Vocational Teachers

Taylor, Meril 12 1900 (has links)
The purpose of this study was to determine what criteria were being used or for use in determining rank assignment of non-degree technical-vocational junior college instructors.
9

#### Cohomology Operations and the Toral Rank Conjecture for Nilpotent Lie Algebras

Amelotte, Steven 09 January 2013 (has links)
The action of various operations on the cohomology of nilpotent Lie algebras is studied. In the cohomology of any Lie algebra, we show that the existence of certain nontrivial compositions of higher cohomology operations implies the existence of hypercube-like structures in cohomology, which in turn establishes the Toral Rank Conjecture for that Lie algebra. We provide examples in low dimensions and exhibit an infinite family of nilpotent Lie algebras of arbitrary dimension for which such structures exist. A new proof of the Toral Rank Conjecture is also given for free two-step nilpotent Lie algebras.
10

#### Diagonal Ranks of Semigroups

Barkov, Ilia January 2013 (has links)
We introduce the notion of diagonal ranks of semigroups,which are numerical characteristics of semigroups. Some base propertiesof diagonal ranks are obtained. A new criterion for a monoidbeing a group is obtained using diagonal ranks.For some semigroup classes we investigate whether their diagonal acts are finitely generatedor not. For the semigroups of full transformations, partial transformations andbinary relations we find the general form of the generating pairs.

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