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 142 for “"Time Independent"”.
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Prediction of the Time-Dependent and Time-Independent Deflections of Circular Plates
Made available in DSpace on 2014-12-10T17:25:27Z (GMT). No. of bitstreams: 1 6500926.pdf: 5069280 bytes, checksum: 4d7a232ee721d89e17a900522cc189fb (MD5) Previous issue date: 1964
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Using time-independent analysis in optimizing inverter efficiency for grid-connected photovoltaic systems
… distribution, eliminating thereby the direct time-dependence. The proposed technique decomposes the PV system into three separate layers: an ambient conditions, a PV output, and a dc-ac conversion layer. It reveals important trends, otherwise obscured in the time-dependent view of the data. …
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The time-independent Schrodinger equation with Dirac delta potentials in an infinite potential well
… Dirac delta potential is considered using the time-independent Schr\"{o}dinger equation, the typical boundary conditions for an infinite well and normalization conditions to obtain the wave function $\psi(x)$. The system naturally imposes an additional condition at $\psi(0)$ due to the Dirac …
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A Study of the Capacity Drop Phenomenon at Time-Dependent and Time-Independent Bottlenecks
… concept of capacity drop can be introduced at time-independent bottlenecks (e.g. freeways) as well as time-dependent bottlenecks (e.g. signalized intersections). While to the author's knowledge no one has attempted to link these phenomena, the research presented in this thesis serves as a first …
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Finite element algorithms for the static and dynamic analysis of time-dependent and time-independent plastic bodies
… can be minimised. A Taylor series expansion in time and space is extensively employed to derive integration schemes which include the generalised trapezoidal rule and a generalised Newton-Raphson scheme. This approach provides theoretical foundations for the generalised trapezoidal rule and the …
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Complexity theory in axiomatic design
… found in use in many fields of science, sometimes as a measurable quantity with a rigorous but narrow definition and other times as merely an ad hoc label. With an emphasis on pragmatic engineering applications, this thesis investigates the complexity concept defined in axiomatic design …
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Time-dependent reliability methodologies with saddlepoint approximation
"Engineers always encounter time-dependent uncertainties that ubiquitously exist, such as the random deterioration of material properties and time-variant loads. Therefore the reliability of engineering systems becomes time-dependent. It is crucial to predict the time-dependent reliability in the …
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The Structure of Stress-Strain Relations in Finite Elasto-Plasticity
The stress-strain behavior of time-independent elastic-plastic material is investigated for finite strain taking the stable range of response of thin-walled tubes as the starting point.
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Accretion disks in the cataclysmic variables
The general equations describing the time-independent structure of gaseous circumstellar disks in vertical hydrostatic equilibrium are derived. The possibility of turbulent instablilty and the resulting viscosity laws are discussed.
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Application of Lie Groups to Discretizing Nuclear Engineering Problems
… exact Green's functions in one dimension for the time-independent neutron diffusion equation for Cartesian, cylindrical, and spherical geometries. This method will be expanded to constructing two-term recurrence relations for an arbitrary number of spatial regions, as well as detailing starting …
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The flow behaviour of non-Newtonian sludges
… of sewage sludge. The sludges are modelled as time-independent, non-Newtonian relations between shear stress, rate of shearing strain, and solids concentration. Due to the inhomogeneity of sewage sludge, error analysis becomes pivotal to the data analysis, and options are examined for reducing …
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Thermoelastoplastic and creep analysis of thick-walled cylinders / Abbas Loghman.
In this thesis, time-independent thermoelastoplastic and time-dependent creep stress and damage analysis of thick-walled cylinders are investigated using incremental theory of plasticity in conjunction with improved material elastoplastic and creep constitutive models. The results are validated …
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An analytical approach to quantum mechanical tunneling time in electronic devices
Starting from the analytical solution to the Time-Independent Schrodinger Equation, and exploiting the analogy between the transmission line equations and the time-independent Schrodinger wave equation, an analytical expression for the Average Particle Traversal (APT) time, {dollar}\tau\sb{\rm …
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Topics in Electromagnetic, Acoustic, and Potential Scattering Theory
… indices, cloaking and invisibility, the topic of time-independent scattering theory in quantum mechanics is becoming a useful field to re-examine in the above contexts. One of the key areas of electromagnetic theory scattering of plane electromagnetic waves — is based on the properties of the …
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Differential equation-based shape interpolation for surface blending and facial blendshapes.
… equation-based surface blending can be time-independent and time-dependent. Existing differential equation-based surface blending only tackles time-dependent
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Vibrational Energies of the Hydrogen Bonds of H₃O₂⁻ and H₅O₂⁺
… by applying an improvement to the standard time-independent Born-Oppenheimer approximation. These two molecules are symmetric around a central hydrogen which participates in hydrogen bonding. Unlike the standard Born-Oppenheimer approximation, this approximation appropriately scales the …
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MIW Sequences
… that MIW sequences derived from solutions to the time-independent Schrödinger equation are stationary, pointwise in the limit, under the corresponding MIW mechanics. The classes of functions considered all include the PDF of the normal distribution, as well as the other time-independent stable …
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Decentralized control of linear switched systems with receding horizon
… and look-ahead horizon to that of a linear time independent (LTI) controller using a MATLAB simulation. The decentralized controller is further tested with a real-world system comprised of two HoTDeC hovercrafts.
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Exponentially Accurate Error Estimates of Quasiclassical Eigenvalues
… series for the low-lying eigenvalues of the time-independent Schröodinger equation, when the Planck's constant is considered in the semiclassical limit. Under certain hypotheses on the potential energy, we prove that, for any given small value of the Planck's constant, there is an optimal …
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