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 128 for “"Problem formulation"”.
-
Knowledge composition methodology for effective analysis problem formulation in simulation-based design
… key challenge is to formulate and solve analysis problems efficiently to evaluate a large variety of design alternatives. The solution of analysis problems has benefited from advancements in commercial off-the-shelf math solvers and computational capabilities. However, the formulation of analysis …
-
Siting sludge treatment facilities for the cleanup of Boston Harbor : decision analysis and problem formulation
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1989.
-
Hydrodynamic linear stability of the two-dimensional bluff-body wake through modal analysis and initial-value problem formulation
… analysis is studied as an initial-value problem to observe the transient behaviour and the asymptotic state of perturbations initially imposed. The initial-value problem allows the formulation to be extended to the near-parallel flow configuration. The initial-value method is, however, …
-
Systems Theory-Based Construct for Identifying Metasystem Pathologies for Complex System Governance
… pathologies identification in support of the problem formulation phase of systems-based methodologies using an inductive research design. Problem formulation has been identified as one of the most critical stages in complex system development since it influences later stages in complex system …
-
Analogical problem evolution in biologically inspired design
… degree to which biological analogues influence problem formulation and understanding in addition to generation of design solutions. I call the process by which a biological analogue influences the evolution of the problem formulation analogical problem evolution. I use the method of grounded …
-
Design coupling analysis in multidisciplinary design optimization and control co-design
… questions that arises early in the optimization problem formulation is what design variables to optimize. Complex systems may have hundreds of design variables, and it might not be possible or even desirable to optimize them all. More clear understanding of relationships between problem variables …
-
Reliability-Based Structural Optimization Under Stochastic Time Varying Loads
… developed. It includes studies on optimization problem formulation, loading modeling, efficient reliability calculation as well as mathematical nonlinear programming. As the most difficult problems in such optimization are the accurate evaluation of the reliability under combined loads and the …
-
Long term infrastructure investments under uncertainty in the electric power sector using approximate dynamic programming techniques
… conditions. The model is based on a multi-stage problem formulation and uses approximate dynamic programming techniques to find an optimal solution. The model was tested under various scenarios. The model results were analyzed with regards to the optimal first-stage investment decision, the final …
-
Producing science that gets used by coastal communities: What funders should do to link more science with decisions
… should consider. Most critically: 1) if solving problems is important, funders need to spend more money on better problem formulation, with an emphasis on involving more people outside of academia and the government sector; 2) if funders are interested in linking science to decisions, they need …
-
Flight Dynamic Constraints in Conceptual Aircraft Multidisciplinary Analysis and Design Optimization
… synthesized. A linear matrix inequality (LMI) problem formulation provides a general and scalable numerical technique for computing the feedback control laws using convex optimization tools. The VCFQ approach is exercised in a design optimization study of a relaxed static stability transonic …
-
Simulink toolbox for L1 adaptive control
… For each test, the document explains control problem formulation along with theorems on bounds of controller performance. Setup information for each tests includes controller parameter setting through the toolbox user interface, whereas, validation results include system output as compared to …
-
Simulation studies of a fluid queuing system
… equations play an important role in the problem formulation and simulation. We prove that strict mathematical expression of optimal control is hard to come up with when the controller is part of the stochastic differential equation. Thus, simulation is used to find optimal control for an …
-
A synthesis of stochastic linear programming
… point, there was considerable divergence in the problem formulations and in methods of solution. These various formulations are discussed and compared illustrating the lack of communication among the authors. Then, a problem formulation is developed which incorporates many of the formulations of …
-
Multi-level Systems Modeling and Optimization
… in a way that coordinates the appropriate problem formulations at each level and enables parametric search in design libraries for solutions that satisfy level-specific objectives. The work here addresses the topic of SoS optimization and discusses problem formulation, solution strategy, …
-
Algorithms for persistent autonomy and surveillance
In this thesis, we consider the problem of monitoring stochastic, time-varying events occurring at discrete locations. Our problem formulation extends prior work in persistent surveillance by considering the objective of successfully completing monitoring tasks in unknown, dynamic environments …
-
Optimal maneuver guidance with sensor line of sight constraint
The problem of optimal guidance design for the low altitude, subsonic, vertical plane approach maneuver of an air vehicle constrained to maintain view of a fixed final position is studied using a nonlinear, constrained, optimal control problem formulation. Multiple, competing optimization criteria …
-
Temporal Bandwidth-Intensive Virtual Network Allocation Optimization in Data Centers
… environment. In particular, we consider this problem in a temporal context where bandwidth-intensive requests from each VN may arrive randomly at a review point, which may last for a certain duration. Thus, at each review point, the data center network provider must optimally allocate …
-
Multiclass Origin-Destination Estimation Using Multiple Data Types
… in the lower-level stochastic user equilibrium problem for flow prediction. Extensive experiments have been performed on a test network with different types of link count sensors and turning movements. The tests verify the problem formulation and solution algorithm, and offer important insights …
-
Building Modular, Human-Interpretable AI Systems with Behavior Trees
… or tasks can be compartmentalized into sub-problems that correspond to actions. These actions become leaves of behavior tree, under the control of high level composite nodes. This modular arrangement makes behavior tree an ideal candidate for constructing solutions for many AI applications, …
-
Dynamic system design optimization of wave energy converters utilizing direct transcription
… can be challenging. In this thesis, both the problem formulation and solution methods will be discussed for designing a dynamic engineering system. A case is made for the inclusion of both the physical and control system design into a single design formulation. A particular class of numerical …
Page 1 of 7