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 154 for “"co-evolution"”.
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Accelerated cooperative co-evolution on multi-core architectures
The Cooperative Co-Evolution (CC) model has been used in Evolutionary Computation (EC) to optimize the training of artificial neural networks (ANNs). This architecture has proven to be a useful extension to domains such as Neuro-Evolution (NE), which is the training of ANNs using concepts of …
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Structures and Processes for Managing Model-Metamodel Co-evolution
… a software system, unintended behaviour must be corrected and new requirements satisfied. Because software changes are costly, tools for automatically managing change are commonplace. Contemporary software development environments can automatically perform change management tasks such as impact …
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Co-evolution of social relationships and cognition: a theoretical investigation
The cognitive demands of maintaining social relationships are argued to underlie apparent co-evolutionary patterns between various social traits and cognitive complexity. Presumably, this cognitive demand arises from some need to gather and process social cues but we have a poor understanding of …
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Landscape structure, regimes, and the co-evolution of hydrologic systems
… in a changing world that go beyond the construction of models of ever-greater complexity. These approaches aim to develop insight into the relationship between catchment properties and hydrologic dynamics using reduced-complexity models, and by looking for patterns that reveal emergent …
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Resource development through the co-evolution of resources and scope
Thesis (Ph.D.)--Massachusetts Institute of Technology, Sloan School of Management, 1999.
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CROW - CultuRal co-evOlution of corvids: Winged omens of the times
Corvids – birds of the crow family, including ravens, crows, jackdaws, magpies, jays and choughs – are among the most ubiquitous and intelligent birds in the world. Their adaptability to anthropogenic environments and omnivorous scavenging makes them commensal and synanthropic species in both urban …
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CROW - CultuRal co-evOlution of corvids: Winged omens of the times
Corvids – birds of the crow family, including ravens, crows, jackdaws, magpies, jays and choughs – are among the most ubiquitous and intelligent birds in the world. Their adaptability to anthropogenic environments and omnivorous scavenging makes them commensal and synanthropic species in both urban …
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Modeling the cosmological co-evolution of supermassive black holes and galaxies
In this Thesis, we investigate the cosmological co-evolution of supermassive black holes (BHs), Active Galactic Nuclei (AGN) and their hosting dark matter (DM) halos and galaxies, within the standard CDM scenario. We analyze both analytic, semi-analytic and hybrid techniques and use the most recent …
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An investigation of fit measures for longitudinal network and attribute co-evolution models
… among actors — people, places, or things. The connections that exist among these actors change over time, depend on the presence or absence of other connections, and depend on the characteristics of the actors present. Advanced modeling techniques have been proposed that are designed to capture …
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Geochemical investigation of the co-evolution of life and environment in the Neoproterozoic Era
The co-evolution of life and the environment stands as a cornerstone in Earth's 4.5-billion-year history. Environmental fluctuations have wielded substantial influence over biological evolution, while life forms have, in turn, reshaped Earth's surface and climate. This dissertation centers on a …
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A high energy perspective of the co-evolution of black holes and their host galaxies
… where the bulk of the X-ray background is almost completely resolved into discrete sources, at least in the 2–8 keV band. Extensive programs of multiwavelength follow-up observations showed that the large majority of hard X–ray selected sources are identified with Active Galactic Nuclei (AGN) …
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Co-evolution of microstructure and dislocation dynamics in InGaP/GaP : engineering high quality epitaxial transparent substrates
… the (1-10), which we call branch defects, was discovered via transmission electron microscopy. Branch defects feature sharp strain fields and dominate the microstructure. causing dislocation pinning and escalation. Branch defects occur later in growth with increasing temperature; however, they are …
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Co-evolution of process and content in organizational change : explaining the dynamics of start and fizzle
… the Start and Fizzle of Organizational Change: Co-evolving Process and Content The theme that sustaining efforts to change is difficult appears in many guises throughout the organizations. The tendency for change processes to run out of energy and momentum is widely recognized. In this essay, I …
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Host-parasite co-evolution and genetic variation at the major histocompatibility complex in the Trinidadian guppy (poecilia reticulata)
The Major Histocompatibility Complex (MHC) is a region of the vertebrate genome believed to be responsible for an individual's ability to detect and recognise invading parasites. The MHC molecule has been shown to bind to short fragments of parasite and present these to the adaptive immune system. …
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Co-Evolution of Source Code and the Build System: Impact on the Introduction of AOSD in Legacy Systems
… application. Such a description not only consists of source code written down in a programming language, as a lot of knowledge is hidden in lesser known software development artifacts, like the build system. As its name suggests, the build system is responsible for building an executable …
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Diffusion, co-evolution and strategic interdependence in comparative and international politics: new spatial econometric and event history approaches
… For example, the level of democracy in one country might be dependent on its level in other countries; the timing of democratization might be related to the survival of existing democracies. In contrast, much of the empirical literature on democratization has modeled the level of democracy …
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Toward a theory of the evolution of business ecosystems : enterprise architectures, competitive dynamics, firm performance & industrial co-evolution
This dissertation contributes toward the building of a theory of the evolution of business ecosystems. In the process, it addresses a question that has been posed by evolutionary theorists in the economics and sociology literatures for decades: "Why do firms in the same industry vary systematically …
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