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.
Results
Showing 1 to 20 of 46 for “"Leapfrog"”.
-
GPU enabled parallel logarithmic Hamiltonian leapfrog for the stability analysis of circumbinary systems
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-08-01
-
Influence of Organizational, Operational, Financial AndEnvironmental Factors on Hospitals' Adoption of Computerized Physician Order Entry Systems for Improving Patient Safety: A Resource Dependence Approach
… adoption decision in six rollout regions of the Leapfrog initiatives.Resource dependence theory provides theoretical basis for the study. The study is retrospective observational in design. Individual hospitals are the unit of analysis. The Leapfrog Group's 2002-survey collection serves the …
-
NEW COMPUTATIONAL METHODS FOR OPTIMAL CONTROL OF PARTIAL DIFFERENTIAL EQUATIONS
… In Chaper 3, we present a new second-order leapfrog finite difference scheme in time for solving the first-order necessary optimality system of the linear parabolic optimal control problems. The new leapfrog scheme is shown to be unconditionally stable and it provides a second-order …
-
Numerical analysis and visualization of the ionospheric Kelvin-Helmholtz instability
… using a combination of predictor-corrector, leapfrog, and leapfrog-trapezoidal methods. A FO RTRAN program is developed to implement the simulation model. All calculations are performed in the Fourier domain. The process of how the KHI evolves is discussed in theory, and observed in …
-
Fourier spectral methods for numerical modeling of ionospheric processes
… is accomplished using a combination of leapfrog and leapfrog-trapezoidal methods. A FORTRAN program is developed to implement the simulation model. All calculations are performed in the Fourier domain. The simulation model is tested by considering three types of problems. This is …
-
3D Modelling of Faulting and Intrusion of the Nevado del Ruiz Volcano, Colombia
… facilitating understanding of the resource. Leapfrog Geothermal is a modelling software created by Seequent that provides these capabilities. The purpose of this work is to create the best possible 3D subsurface visualization for the Nevado del Ruiz geothermal prospect using Leapfrog …
-
An arbitrary curvilinear coordinate particle in cell method
… unable to be integrated using the standard Leapfrog method. We have developed an extension of the semi-implicit Modified Leapfrog (ML) integration technique to preserve the symplectic nature of the logical grid particle mover. We constructed a proof to show that the ML integrator is …
-
Stopover behavior and refueling physiology in relation to migration distance in Wilson's Warblers (Wilsonia Pusilla)
… and refueling rate. Wilson’s Warbler is a leapfrog migrant passerine that winters in Central America and breeds throughout North America. Birds were captured in the spring and fall of 2006 during passage through a desert stopover site in southern Arizona. Total migration distance of …
-
Improvements to a fully kinetic Hall thruster simulation code and characterization of the cylindrical cusped field thruster
… same time, possible candidates to replace the leapfrog algorithm in the particle pusher have been studied. This work is described in Chapter 3. Finally, chapter 4 presents the results of the testing of the recently built Cylindrical Cusped-Field Thruster (CCFT) performed at the SPL.
-
Strengthening embedded system security with PUF enhanced cryptographic engines
… the direction of mobile security and help it leapfrog efforts made by hackers around the world. During this time, an analysis of modern mobile security research was conducted. The research presented also includes research conducted on Physical Unclonable Functions and their impact to the world …
-
Simulations of the Formation of Tidal Dwarf Galaxies
… Supercomputer parallelisiert worden. Sowohl ein Leapfrog als auch ein Runge-Kutta-Fehlberg Integrator wurden implementiert, die beide ein Schema fuer individuelle Zeitschritte der Teilchen verwenden koennen. Weitere implementierte Merkmale sind z.B. periodische Randbedingungen und kosmologische …
-
Methodologies for Broadband Electromagnetic Modeling of on-Chip Semiconductor Substrate Noise
… constraints to the more frequently used explicit leapfrog scheme. Furthermore, a previously proposed FDTD subgridding scheme, based on a finite element method (FEM) formalism, has been reformulated and adapted to work within the FIT framework. One important element of the presented subgridding …
-
Digital signal processing analysis of switched capacitor filters
… of a 7th-order bilinear and an 8th-order LDI leapfrog switched capacitor lowpass filter is then presented. Finally, with the intent of presenting an alternative approach to current analytical procedures in switched capacitor noise spectrum analysis, various spectrum estimation techniques are …
-
ΚΥΜΑΤΙΚΑ ΦΙΛΤΡΑ ΔΙΑΚΟΠΤΟΜΕΝΟΥ ΠΥΚΝΩΤΗ
… PARASITIC INSENSITIVE WAVE SCFILTERS AND TO LEAPFROG TYPE SC FILTERS. MULTIPLEXED SIMULATED LC FILTERS AND FILTERS WITH TRANSMISSION ZEROS ARE DEVELOPED. BILINEAR S-Z TRANSFORMATION IS APPLIED FOR ALL CIRCUITS, THUS, THE DESIGN IS EXACT AND THERE IS NO REQUIREMENT FOR A HIGH CLOCK FREQUENCY. …
-
Exploring neighborhood power production technologies and business models for developing economies
… The developing economies can essentially leapfrog their more developed counterparts with regards to grid-resiliency. The goal of this thesis is to examine broad trends in the Neighborhood Power Producer business model and what strategies are necessary for business sustainability in the …
-
Modelling the La Soufrière hydrothermal system, St. Vincent and the Grenadines
… models. This conceptual model was built using Leapfrog Geothermal and was subsequently used as the basis for the TOUGH2 numerical model. A natural state TOUGH2 model was calibrated using downhole temperature data from 3 wells drilled in St. Vincent and the location of areas of high surface heat …
-
PIC simulation of a ceramic-lined Hall-effect thruster
… and electrons as particles, moved forward by a leapfrog algorithm at each timestep, matching the lowest of the plasma and the cyclotron times. At the end of each timestep, a successive-over-relaxation algorithm solves the Gauss' formulation of the Poisson equation. Collisions include …
-
Distance education for national development: The case of the university of mauritius
… transformation being brought by globalization to leapfrog stages of development.” (Bloom, 2002: 2) According to Porter (1990), for nations to be competitive, it is important to have a highly performing higher education. Education is a great catalyst for national development, especially when …
-
3D conceptual and TOUGH2 modelling of the Waiotapu geothermal field, New Zealand
… from surface and subsurface exploration. Leapfrog Geothermal software was used to build the model. This 3D conceptual model was used as the basis of a numerical TOUGH2 model. The numerical model was calibrated to measured well temperature and the result of this calibration shows the …
-
Advancements in Isotopic Geolocation Tools for Insect Migration Research
… little longitudinal movement. Evidence for a leapfrog migration pattern was found in the western region, wherein butterflies of northernmost origin journey farther south than butterflies bred in more southerly regions. This leapfrog migration pattern suggests distinct migratory behaviours …
Page 1 of 3