Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 2765 for “"Matrices"”.
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On k-commutative matrices
Electronic Thesis or Dissertation
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Distance matrices of trees
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1986.
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Involutory matrices, modulo m
… the number of all distinct n x n - involutory matrices (mod m) is derived. This is done by first developing a method for the construction and enumeration of involutory matrices (mod P<sup>α</sup>), without duplication, for each prime power modulus P<sup>α</sup>. Using these results, formulas …
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Amicable matrices and orthogonal designs
… we construct an infinite class of amicable T-matrices of order n=p^r+1 in association with negacirculant weighing matrices W(n,n-1). In particular, for p^r≡1 (mod 4) we construct amicable T-matrices of order n≡2 (mod 4) and application of these matrices allows us to generate infinite class of …
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Realization of Loop-Resistance Matrices
Made available in DSpace on 2014-12-04T21:03:14Z (GMT). No. of bitstreams: 1 6001692.pdf: 2362967 bytes, checksum: 77ba6b5606b20ededb0cd15553cf5572 (MD5) Previous issue date: 1960
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Efficient storage of versioned matrices
… analyses, results in the generation of large matrices that must be stored and retrieved. Such matrices are often versioned; an initial matrix is stored, then a subsequent matrix based on the first is produced, then another subsequent matrix after that. For large databases of matrices, …
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Static conformance checking for matrices
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Banded matrices with banded inverses
… we tend to focus on the ranks of the block matrices that are present in the banded matrix. We consider mainly the two factor 2-by- 2 block matrix and the three factor 2-by-2 block matrix cases. We prove that the ranks of the blocks in the larger banded matrix need to necessarily conform to a …
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Authentication protocol using trapdoored matrices
In this thesis, we propose a new type of public-key authentication protocol, which is based on timing gaps. The honest user's secret key allows him to perform a task faster than any adversary. In our construction, the public key is a n x n matrix and the secret key is a trapdoor of this matrix. The …
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Determinants of matrices over lattices
… elements; and evaluations of certain special matrices. An expansion by row or column is given for one determinant and a lemma on inverses is proven in light of another. A preliminary section on Lattice Theory is also included.
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A Computational Approach to the Quillen-Suslin Theorem, Buchsbaum-Eisenbud Matrices, and Generic Hilbert-Burch Matrices
<p> We investigate certain classes of modules of low projective dimension over polynomial rings whose free resolutions have known special structure. We begin with projective modules and investigate a computational approach to a famous theorem of Quillen-Suslin, which states that every finitely …
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Textile Strukturen zur Bewehrung zementgebundener Matrices
As a complement to shortfibre reinforced air-placed concrete, textile reinforced concrete elements present new applications in the area of thin-walled elements, due to their high strength resitance. By physical and chemical examinations fibermaterial is detected, which on principle is suitable for …
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Bioartificial matrices to modulate epithelial morphogenesis
… was to engineer bioartificial extracellular matrices (ECM) that would support and modulate epithelial cyst morphogenesis. We have engineered hydrogels, based on a multi-arm maleimide-terminated poly (ethylene glycol) (PEG-4MAL), that present cell adhesive molecules and enzymatic degradation …
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Speciation of chromium in environmental matrices.
… of speciation analysis in such complex matrices. A method based on single extraction with 0.43 mol L[-1] acetic acid followed by on-line ion chromatography with chemiluminescence detection was found to be simple, sensitive, free of interferences, and more importantly the integrity of the …
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Inorganic Nanoparticle Nucleation on Polymer Matrices
… composition and size on the solid polymer matrices was controlled by varying the composition of PAA. PAA and silver nanoparticles effect on the mechanical properties of the calcium alginate hydrogels were also studied. Physically crosslinking PAA with calcium alginate gels enables the …
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Design of Artificial Modular Extracellular Matrices
Cellular functions such as cell growth, adhesion and differentiation are essentially controlled by the surrounding extracellular matrix (ECM). The mechanical, chemical and structural properties of the ECM are consequently crucial for the selection of cells at interfaces and the formation of …
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