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 19 of 19 for “"Global Solutions"”.
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Building or stumbling, blocks anyhow: a comparative approach of regional labour mobility frameworks towards global solutions
… to be learned emerge that are relevant from a global perspective and to enhance the legal architecture of international labour mobility. The findings show positive outcomes, with some RTAs generating trade benefits and even moving forward with a common passport based on the newly shared …
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Asymptotic behavior of the solutions to a family of PDE's arising from the chemotaxis equations of Keller and Segal
… boundary conditions. The operators which lead to global solutions and those that lead to solutions which blow up in finite time are considered as a function of rho, using an application of the methods of Hillen and Potapov [Math. Methods Appl. Sci., 27 (2004), pp. 1783-1801] to analyze the global …
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UNDERSEA LOGISTICS: ROUTING OPTIMIZATION IN GRAY ZONE ENVIRONMENTS
… there are no models that seek to provide a global solution with multiple logistic vessels to multi-echelon UUVs. We generalize a prior model for medical evacuation with multiple types of unmanned vehicles using time-synchronized systems via a multiple-path orienteering problem. We extend …
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Dynamic electronic asset allocation comparing genetic algorithm with particle swarm optimization
… Algorithm has higher fitness values and better global solutions for 3 or more receivers, it increases the running time. The Genetic Algorithm is around (15-30\%) more accurate for asset counts from 3 to 6 but requires (26-82\%) more computational time. When the allocation problem complexity …
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Bounds on the growth of high Sobolev norms of solutions to nonlinear Schrödinger equations
… thesis, we study the growth of Sobolev norms of global solutions of solutions to nonlinear Schrödinger type equations which we can't bound from above by energy conservation. The growth of such norms gives a quantitative estimate on the low-to high frequency cascade which can occur due to the …
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Can I ask you a question? On global studies and solutions
The Institute for Global Studies (IGS) at Claremont High School in Victoria, Canada is a distinctive local example of “transformative education” that features a transdisciplinary, problem-based and globally oriented program within the public secondary school system. Launched in 2012, and arising …
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Global dynamic optimization
… method is rigorously shown to converge to the global solution in a finite time. An implementation is developed, and via a collection of case studies, the technique is shown to be very efficient in computing the global solutions. For problems with embedded nonlinear dynamic systems, the analysis …
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Some applications of continuous variable neighbourhood search metaheuristic (mathematical modelling)
… continuous in nature. In some cases, finding the global solutions for these problems is di±cult. The reason is that the problem's objective function is non convex, nor concave and even not differentiable. Tackling these problems is often computationally too expensive. Although the development in …
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An empirical study of round and block norms for modelling actual distances
… the block norms, new procedures that determine global solutions for the criteria are developed. Normality assumptions regarding the individual terms of the criteria are examined since these terms are used to formulate statistical tests that are sensitive to departures from normality. A new …
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Approximate Dynamic Programming with Applications
… systems. Particular attention is given to global solutions and to the computation of approximately optimal feedback controllers. The solution to an optimal control problem is characterized by the optimal value function. For a large class of problems the optimal value function must satisfy a …
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Existence Results for Plasma Physics Models Containing a Fully Coupled Magnetic Field
… is on existence and uniqueness questions for solutions of the initial value problem, i.e., it is asked whether there exists a solution f of the system under consideration such that f(t=0)=f0 where f0 is a prescribed initial datum. In order to answer this question further properties of …
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Scheduling and Resource Efficiency Balancing: Discrete Species Conserving Cuckoo Search for Scheduling in an Uncertain Execution Environment
… search spaces and presence of multiple local and global optima. The main goal of this thesis is twofold. Firstly, it presents a variation of the RCPSP that considers optimisation of projects in an uncertain environment where resources are modelled to adapt to their environment and, as the result …
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Nonlinear dispersive equations with random initial data
… of power-type on R3. We establish an almost sure global existence result with respect to a suitable randomization of the initial data. In particular, this provides examples of initial data of supercritical regularity which lead to global solutions. The proof is based upon Bourgain's high-low …
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Inverse techniques: problems in optics and gas sensing
… in this thesis and was developed with Shell Global Solutions. LightTouch uses the fact that oil reserves, through microseepages, leak hydrocarbons to their surface. Detection of these hydrocarbons can indicate the presence of oil reserves. LightTouch measures Ethane to sub-part-per-billion …
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Continuous low-rank tensor decompositions, with applications to stochastic optimal control and data assimilation
… control. These techniques enable computing global solutions to a broader set of problems, for example those with non-affine control inputs, than previously possible. Examples are presented for motion planning with robotic systems that have up to seven states. Finally, we use the FT to extend …
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Multiscale analysis of localized, nonlinear, three-dimensional thermo-structural effects
… Localized damage or deformation may impact global structural behavior, yet bridging spatial scales between local- and structural-scale response is a nontrivial task. Because of these issues, standard finite element analysis techniques lead to cumbersome and prohibitively expensive numerical …
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Scattering and stability properties of nonlinear wave equations on asymptotically flat spacetimes
… Each project focuses on the behaviour of solutions nearby special ones and are therefore part of a perturbative understanding of these PDEs. Furthermore, all projects are connected by the search for a geometric understanding of the equations and the use of this geometry for the analysis. …
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Blow-up in a degenerate parabolic equation with gradient nonlinearity
In this thesis we study positive classical solutions of the degenerate parabolic differential equation $u_t = u^p Delta u + u^q + kappa u^r|abla u|^2$ with zero Dirichlet boundary condition in smoothly bounded domains Omega. Here p>0, q>1, r>-1 and kappa are real parameters. The main aspect of this …
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Efficient Methods for Structural Analysis of Built-Up Wings
… models are used for the purpose of obtaining global solutions. However, for wings with low aspect ratio, the use of equivalent beam models is questionable, and using an equivalent plate model would be more promising. An efficient method, Equivalent Plate Analysis or simply EPA, using an …