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  • About
  • 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.
41

Composite sequences for rapid acquisition of direct-sequence spread spectrum signals.

Faulkner, Sean (Sean Anthony), Carleton University. Dissertation. Engineering, Electrical. January 1992 (has links)
Thesis (Ph. D.)--Carleton University, 1992. / Also available in electronic format on the Internet.
42

Permanenzsätze für din zeileninfinites Matrixverfahren zur Limitierung von Doppelfolgen

Stieglitz, Michael, January 1966 (has links)
Diss.--Stuttgart. / Vita. Bibliography: p. 86-88.
43

Trivial spectral sequences in the theory of fibre spaces

Blumberg, Duane Darrel, January 1970 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
44

A Hilbert space approach to multiple recurrence in ergodic theory

Beyers, Frederik J. C. January 2004 (has links)
Thesis (M.Sc.)(Mathematics)--University of Pretoria, 2004. / Title from opening screen (viewed March 27, 2006). Includes summary. Includes bibliographical references.
45

A study of barred preferential arrangements with applications to numerical approximation in electric circuits

Nkonkobe, Sithembele January 2016 (has links)
In 1854 Cayley proposed an interesting sequence 1,1,3,13,75,541,... in connection with analytical forms called trees. Since then there has been various combinatorial interpretations of the sequence. The sequence has been interpreted as the number of preferential arrangements of members of a set with n elements. Alternatively the sequence has been interpreted as the number of ordered partitions; the outcomes in races in which ties are allowed or geometrically the number of vertices, edges and faces of simplicial objects. An interesting application of the sequence is found in combination locks. The idea of a preferential arrangement has been extended to a wider combinatorial object called barred preferential arrangement with multiple bars. In this thesis we study barred preferential arrangements combinatorially with application to resistance of certain electrical circuits. In the process we derive some results on cyclic properties of the last digit of the number of barred preferential arrangements. An algorithm in python has been developed to find the number of barred preferential arrangements.
46

A study of the sequence category

Gentle, Ronald Stanley January 1982 (has links)
For a given abelian category o/, a category E is formed by considering exact sequences of o/. If one imposes the condition that a split sequence be regarded as the zero object, then the resulting sequence category E/S is shown to be abelian. The intrinsic algebraic structure of E/S is examined and related to the theory of coherent functors and functor rings. E/S is shown to be the natural setting for the study of pure and copure sequences and the theory is further developed by introducing repure sequences. The concept of pure semi-simple categories is examined in terms of E/S. Localization with respect to pure sequences is developed, leading to results concerning the existence of algebraically compact objects. The final topic is a study of the simple sequences and their relationship to almost split exact sequences. / Science, Faculty of / Mathematics, Department of / Graduate
47

An investigation of the influence of visualisation, exploring patterns and generalisation on thinking levels in the formation of the concepts of sequences and series

Nixon, Edith Glenda 11 1900 (has links)
Piaget and Freudenthal advocated thinking levels. In the 1950's the van Hieles developed a five level model of geometric thought. Judith Land adapted the model in 1990, utilising four levels to teach the concept of functions. These four levels have been considered here in the formation of concepts of sequences and series. The origin and relevance of sequences and series have been studied and the importance of visualisation, patterning and generalisation in the instructional process investigated. A series of lessons on these topics was taught to a group of six higher grade matriculation students of mixed ability and gender. Questionnaires related to student progress through the various levels were answered, categorised, graphed and analysed. Despite the small number of students, results seem to indicate that emphasising visualisation, exploring patterns and generalisation and teaching the topics as a reinvention had made a positive contribution towards progress through the various thought levels. / Mathematics Education / M.A. (Mathematics Education)
48

An assessment of an alternative method of ARIMA model identification /

Rivet, Michel, 1951- January 1982 (has links)
No description available.
49

Escher's Problem and Numerical Sequences

Palmacci, Matthew Stephen 27 April 2006 (has links)
Counting problems lead naturally to integer sequences. For example if one asks for the number of subsets of an $n$-set, the answer is $2^n$, or the integer sequence $1,~2,~4,~8,~ldots$. Conversely, given an integer sequence, or part of it, one may ask if there is an associated counting problem. There might be several different counting problems that produce the same integer sequence. To illustrate the nature of mathematical research involving integer sequences, we will consider Escher's counting problem and a generalization, as well as counting problems associated with the Catalan numbers, and the Collatz conjecture. We will also discuss the purpose of the On-Line-Encyclopedia of Integer Sequences.
50

A counterexample to a conjecture of Serre

Anick, David Jay January 1980 (has links)
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE. / Bibliography: leaves 48-49. / by David Jay Anick. / Ph.D.

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