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 47 for “"Large-scale system"”.
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Simulation of large-scale system-level models
In this thesis, the efficient simulation of large-scale system-level VHDL models is analyzed. The system-level models chosen for the investigation are multicomputer networks, which are scalable up to thousands of processing nodes. Initially, a classification of parallel processing architectures is …
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Efficient Projection-Based Stability Guaranteed Model Order Reduction for Active Circuits
… an important tool for accelerating simulation of large scale system originating in circuit area. But this kind of method cannot guarantee the stability of the reduced model in the case of active circuits. To address this problem, a novel moments matching model reduction method is proposed in this …
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A framework for quantifying complexity and understanding its sources : application to tow large-scale systems
… work is to quantify the complexity of complex systems and to understand its sources. To study complexity, we develop a theoretical framework where the complex system of interest is embedded in a broader system: a complex large-scale system. In order to understand and show how the complexity of …
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A methodology for integrating maintainability into large-scale software using software metrics
… which assists in the development of maintainable systems and does so without disrupting industry standard development techniques. The process uses software metrics and iterative enhancement concepts to reduce the complexity of high-level language code, making it less error-prone and more …
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Synchronization of classes of dynamical networks : analysis and control
… the stability analysis of an error dynamical system which is transformed into a large-scale system with different subsystems. For the second type of networks, multiple Lyapunov functionals are used to analyze exponential synchronization of a network with switching topology and time-varying …
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Synchronization of classes of dynamical networks : analysis and control
… the stability analysis of an error dynamical system which is transformed into a large-scale system with different subsystems. For the second type of networks, multiple Lyapunov functionals are used to analyze exponential synchronization of a network with switching topology and time-varying …
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Plantwide dynamic operability analysis from network perspective
… processes based on the concept of dissipative systems and network perspective. An entire large-scale system is represented as a network of smaller sub-systems and their interconnection topology can then be captured explicitly. A distinctive feature of the network perspective lies in the …
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Large-scale neuromorphic computing hardware for analog AI enabled by epitaxial random access memory
… of an analog memristive device and its large-scale crossbar to implement neuromorphic hardware systems for deep neural networks, only limited approaches, such as inference task, were suggested due to spatial/temporal variations and nonlinear/step-limited weight update properties. In …
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An OpenDSS implementation of a generic municipal microgrid for co-simulation
… and co-simulations using said model. Many power system research problems may be solved via the deployment simulations. However, for real-world problems he computational efforts for detailed dynamic modeling may be impractical or excessive. OpenDSS provides a framework within which a model of a …
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A statistical learning framework for data mining of large-scale systems : algorithms, implementation, and applications
… supports data mining and statistical modeling of systems that are monitored by large-scale sensor networks. The proposed algorithm is novel in that it takes both observations and domain knowledge into consideration and provides a mechanism that combines analytical modeling and inductive learning. …
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Power System Coherency Identification Using Nonlinear Koopman Mode Analysis
… to decompose the swing dynamics of a power system into modes of oscillation, which are identified by analyzing the Koopman operator, a linear infinite-dimensional operator that may be defined for any nonlinear dynamical system. Specifically, power system modes of oscillation are identified …
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Geometric Principles of Multiple Visual Sensors
… theoretical and practical issues in building a large scale system with distributed visual sensors. I have developed a unified algebraic approach for studying the structure-from-motion problem, which is a set of rank conditions on the multiple-view matrices of image features. This approach can be …
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Model-constrained optimization methods for reduction of parameterized large-scale systems
… formed as the span of a set of solutions of the large-scale system, which are computed for selected values (samples) of input parameters and forcing inputs. In existing model reduction techniques, choosing where and how many samples to generate has been, in general, an ad-hoc process. A key …
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Use of artificial neural network techniques to model proteomics of cellular stress
Commercial scale bio processing is a major challenge when developing a whole cell biological vaccine. You must ensure that the end product has a sufficient level of potency to invoke an immune response within the host. Making sure that these key antigens remain on the cell surface during the …
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System of Systems Composition and Course of Action Pathfinding Tool (CNCPT)
The CnCPT Framework enables systematic exploration of the optimal configurations for large-scale complex system of systems architectures. CnCPT provides a straightforward and systematic approach to rapidly develop viable architectural concepts by having users focus on the fundamental constraints of …
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Decentralized state-space controller design of a large PHWR
The behaviour of a large nuclear reactor can be described with sufficient accuracy using a nodal model, like the spatial model of a 540 MWe large Pressurized Heavy Water Reactor (PHWR). This model divides the reactor into divisions or nodes to create a spatial model in order to control the xenon …
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A Design Science Research Framework for building Resilience in South Africa’s National Digital Health Information System: an Ultra-Large-Scale Systems perspective
… Africa’s National Digital Health Information System (NDHIS) is intended to serve as the backbone for the National Health Insurance (NHI) by enabling patient registration, provider contracting, financing, and performance monitoring. However, persistent fragmentation, legacy systems, provincial …
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Surrogate modeling for large-scale black-box systems
This research introduces a systematic method to reduce the complexity of large-scale blackbox systems for which the governing equations are unavailable. For such systems, surrogate models are critical for many applications, such as Monte Carlo simulations; however, existing surrogate modeling …
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Cooperative checkpointing for supercomputing systems
A system-level checkpointing mechanism, with global knowledge of the state and health of the machine, can improve performance and reliability by dynamically deciding when to skip checkpoint requests made by applications. This thesis presents such a technique, called cooperative checkpointing, and …
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