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 16 of 16 for “"Column-Diagonal""”.
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ΣΥΜΒΟΛΗ ΣΤΗ ΒΕΛΤΙΩΣΗ ΤΗΣ ΣΕΙΣΜΙΚΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ ΕΞΩΤΕΡΙΚΩΝ ΚΟΜΒΩΝ ΠΛΑΙΣΙΩΝ ΑΠΟ Ο/Σ: αναλυτική και πειραματική έρευνα
… OF REINFORCED CONCRETE B/C JOINTS WITH DIAGONAL REINFORCING BARS UNDER CYCLIC LOADING. B. THE SECOND AIM OF THIS STUDY IS TO COMPARE THE EFFICIENCY OF THE PROPOSED DIAGONAL REINFORCING PATTERN WITH THOSE OF OTHER NON CONVENTIONAL REINFORCING PATTERNS OFOTHER TYPES, SUCH AS STEEL FIBERS …
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Development and demonstration of a new non-equilibrium rate-based process model for the hot potassium carbonate process.
… and detailed hydrodynamic calculations for the column internals. The enhancement factor approach was used to represent the effects of the chemical reactions. The non-equilibrium rate-based CO₂ Removal Train process models were implemented in the Aspen Custom Modeler® simulation environment, …
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Positive-off-diagonal Operators on Ordered Normed Spaces and Maximum Principles for M-Operators
… This leads to the study of positive-off-diagonal operators. 2. Which conditions on an M-operator ensure that its (positive) inverse satisfies certain maximum principles? We deal with generalizations of the "maximum principle for inverse column entries".
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Ordering Strategies for Sparse Matrices in Chemical Process Simulation
… arise from such problems. Since the row and column ordering of these matrices has a direct impact on the efficiency of frontal methods, this work has developed a number of ordering strategies specifically designed for use with frontal methods. The strategies investigated include local …
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Application of modern control techniques to a distillation column
… techniques have been applied to a distillation column. Three control techniques were selected for evaluation. These are; a decoupling and disturbance rejection control scheme; an estimator aided control techniques using a Kalman filter; and an implicit generalised minimum variance self tuning …
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The structure and average discrepancies of lattice rules for numerical integration
… in a canonical D - Z form in which D is a diagonal matrix whose diagonal entries are known as the invariants and Z is an integer matrix. Although D is unique in this canonical form, Z may be chosen in many different ways. Except for the case of so-called projection-regular and prime-power …
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Enhancing Progressive Collapse Resistance of Steel Building Frames Using Thin Infill Steel Panels
… </p> <p>The steel frames with simple beam-to-column connections, under different boundary conditions (i.e., sidesway uninhibited and sidesway inhibited, respectively), and the loss of one bottom story column were retrofitted using the proposed technology (i.e. installing thin steel panels in …
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Punching failure and compressive membrane action in reinforced concrete slabs
… on one quarter scale models of the interior slab—column connection in a flat slab structure are reported.From an examination of the experimental evidence, fundamental concepts of slab behaviour are established and a rational method for the prediction of the punching strength of the conventional …
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Mutual pounding of structures during strong earthquakes
… properly with both structures. In the case of column pounding where the floors of one structure pound on the columns of the other structure, the pounding mitigation strategy is to provide K-bracings on all pounding columns and diagonal bracing in the other stories to reduce high bending moment …
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Matrix Factorizations, Triadic Matrices, and Modified Cholesky Factorizations for Optimization
… called triadic if it has at most two nonzero off-diagonal elements in each column. Tridiagonal matrices are a special case of these. We prove that the triadic structure is preserved in the Cholesky-related factorizations We analyze its numerical stability and also present our perturbation …
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Algorithms for Vertex-Weighted Matching in Graphs
… place large matrix elements on or close to the diagonal, to compute the block triangular decomposition of sparse matrices, to construct sparse bases for the null space or column space of under-determined matrices, and to coarsen graphs in multi-level graph partitioning algorithms. In the first …
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Crashworthiness analysis of ultralight metal structures
… excellent agreement. The double-walled sandwich columns appear to have the highest specific crushing resistance. It is found that during progressive crushing, the core-face plate debonding occurs only at the corner portion of the column, while the web portion remains intact and dissipates most of …
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Optimality and Construction of Designs with Generalized Group Divisible Structure
… as defined by Jacroux (1985), to cases where off-diagonal entries of the concurrence matrix differ by at most the positive integer <em>l</em>. Sufficient conditions are derived for a NBBD(2) to be optimal under a given type-I criterion. The conditions are used to establish the A- and D-optimality …
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The influence of semi-rigid connections on the non-linear behaviour of pallet rack and scaffold structures
… are available. The papers use a single column model, based on stability functions. To ensure an efficient algorithm modified slope-deflection equations are derived for elements of the pallet rack containing splices. The analysis programs are then able to use efficient tri-diagonal …
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High-Performancs Sparse Matrix-Vector Multiplication on GPUS for Structured Grid Computations
… formats such as Compressed Sparse Row (CSR) and Diagonal format (DIA) are not the most effective for such matrices.In this thesis, we present a new sparse matrix storage format that takes advantage of the diagonal structure of matrices for stencil operations on structured grids. Unlike other …
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Consistent community detection in uni-layer and multi-layer networks
… in networks is motivated by analyzing a block-diagonal Laplacian matrix with the blocks representing the connected components of a graph. The method is shown to be consistent for community detection in graphs generated from the stochastic block model and the degree corrected stochastic block …