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 63 for “"Exponential function"”.
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The exponential function and its inverse
Electronic Thesis or Dissertation
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The SIR Model When S(t) is a Multi-Exponential Function.
… assume <em>S</em>(<em>t</em>) is a finite multi-exponential, i.e. function of the form <em>S</em>(<em>t</em>) = <em>a</em>+ ∑<sup><em>n</em></sup><sub><em>k</em>=1</sub> <em>r<sub>k</sub>e</em><sup>-σ<em><sub>k</sub>t</em></sup> or a logistic function which is an infinite-multi-exponential, i.e. …
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A hierarchical verification of the IEEE-754 table-driven floating-point exponential function using HOL
… of the IEEE-754 Table-Driven floating-point exponential function algorithm system allows its use for the verification task over the whole design path of the circuit, starting from the gate level implementation of the circuit up to a higher level behavioral specification. To achieve this goal, …
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Ensinando com estratégias função exponencial.
The exponential function is an important content of mathematics that should be taught in the classroom for all students, because their applications develop the intellectual reasoning, thinking it was so necessary a reflective study about the difficulty of learning this content. In this perspective, …
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Accelerating Finite State Projection through General Purpose Graphics Processing
… equation. The algorithm utilizes the matrix exponential function, and so the algorithm’s performance suffers when it is applied to large problems. Other work has been done to reduce the size of the exponentiation through mathematical simplifications, but efficiently exponentiating a large …
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Schanuel Functions and Algebraic Differential Equations
The Schanuel class consists of functions that can be obtained from $\doubc$, the variable z, and closed under addition, multiplication and exponentiation by the exponential function. A proof is presented that the minimum order of an algebraic differential equation (ADE) satisfied by a given …
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Quasi-Newton and Multigrid Methods for Semiconductor Device Simulation
… device equations using the Bernoulli function approximation to the exponential function is described, and the robustness of this approximation is demonstrated. Sheikh's convergence analysis of Gummel's method and quasi-Newton methods is extended to a nonuniform mesh and the Bernoulli …
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Approximation of Elements of Exponentials of Differential Operators With Rational Quadrature
… the accuracy of approximations of elements of exponentials of differential operators, by using a rational function, instead of a polynomial function, as the interpolating function. Since a rational function behaves more like a decaying exponential function, it seems logical that the …
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A harmonic M-factorial function and applications
… to the falling factorial and rising factorial functions for the set of harmonic numbers, as well as a mixed factorial function called the M-factorial. From these concepts, we develop a harmonic analog of the binomial coefficient and an alternate expression of the harmonic exponential function …
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The involution principle and h-positive symmetric functions
… of symmetric powers of V. Expanding the iterated exponential function as a power series yields coefficients whose positivity implies the h-positivity of the characteristic of the symmetric group character whose value on the permutation w is the number of labeled forests with c(w) vertices, where …
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Nonlinear Approaches to Predicting Diameter of the Largest Limb at Breast Height in Young, Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco) Plantations Growing in the Pacific Northwest
… in the Pacific Northwest using a combined power exponential function. The first method examined admitting predictor variables as additional factors in the power function portion and linear terms in the exponential portion. The second method used DBH as the base factor and estimated the parameters …
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The Biosystematics of Isonychia Bicolor (Walker) of the Finley Creek, Missouri
… Larval dry weight was a highly significant exponential function of head capsule width as: Weight (mg) = .7872 x Head width (mm) 3.9418. Larval density and biomass increased during summer and winter and decreased during spring and fall emergence peaks. Emergence, subimago flight, mating …
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Normal Fault Trace-Length Scaling in a Tectonic Transition Zone in Southern Sedna Planitia, Venus
… verses length plot (CNL) and fit with a power function, exponential function, and logarithmic function to determine which function best describes the trace-length distribution.A power function is the best fit with a scaling exponent of 1.73. This result is compared to previous studies of fault …
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Quantum transport of electrons through graphene and carbon nanotubes
… In the case of graphene, conductivity is an exponential function of temperature, whereas nanotubes follow a power law. This is a very characteristic feature of quantum dots.
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Surface studies in ultra high vacuum
… order of reaction, the activation energy and pre-exponential function for desorption. Electron microscopy and X-ray diffraction were also used to investigate the effect of the gases on the metal surface.
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Delay Analysis of Digital Circuits Using Prony's Method
… system, i.e. to characterize a waveform using an exponential function. In this thesis, not only values but also equally spaced derivatives are tested. Still using same idea of the traditional Prony's method, poles and residues can also be extracted with those values and derivatives. The resultant …
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A Study of Transport of Micellar Fluids in Porous Media
… measured for three-phase micellar fluids as a function of capillary number in a Berea core. Continuous and slug displacements of both partitioning and non-partitioning radioactive tracers were run for each steady-state experiment. The experimental effluent tracer data from these experiments …
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Lifetime of Human Visual Sensory Memory: Properties and Neural Substrate
… each subject was well characterized by a single exponential function, thus a lifetime could be defined for VSM decay in individual subjects. It was found that intensive practice with partialreport task prolonged VSM lifetime. This practice effect shows an unexpected adaptive property of VSM and …
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Study of artificially disordered optical fibers
… of the fiber follows the Rayleigh negative exponential function. To explain the experimental findings, a comprehensive theoretical model is developed with three main results. First, statistical properties of all components of the dielectric tensor are obtained and analyzed in the framework a …
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Optical studies of colloidal quantum dots : optical trapping with plasmonic nanoapertures and thermal recovery from photoinduced dimming
… recovery was well described by a stretched exponential function, and further analysis yielded an underlying probability distribution of rate constants. Casting the rate constants as a collection of first-order activated processes provided an activation barrier probability distribution with …
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