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.
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Showing 1 to 15 of 15 for “"life models."”.
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An Artificial Life Model of Engineering Attrition Contemplation: Why do Federally Employed Civilian Engineers Think of Quitting?
… engineer turnover, to develop an Artificial Life (A-Life) model and simulation methodology useful for studying behavioral variables of individuals in an organization.</p> <p>One consequence of work stress is burnout, and its extreme expression is quitting or turnover. Various models have been …
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Chloride Penetration Resistance and link to Service Life Design of Virginia Bridge Decks
… of corrosion have sparked interest in service life design of bridge decks. This thesis characterized the exposure conditions of Virginia, including temperature and surface chloride concentration, as well as Virginia concrete mix properties, including initial chloride concentration and chloride …
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Albert Bandura and Ellen G. White: a Comparative Study of Their Concepts of Behavior Modification through Modeling
… behavior of other human beings.</p> <p>2. Real-life models are the basic sources of modeling influences.</p> <p>3. Modeling is a potent means of behavior transmission and modification.</p> <p>4. Modeling involves different complex variables originating in the observer and the model.</p> <p>5. …
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Solder Interconnect Life Prediction under Complex Temperature Cycling with Varying Mean and Amplitude
… accuracies for predicting solder interconnect life under complex temperature cycling. Three modeling approaches were presented in this study: 1) modeling the strain energy under the resultant complex temperature cycling and employing the energy based fatigue life models; 2) segmenting the …
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Novel Implementation of Additive Manufacturing to Visualize the Human Brain Connectome
… of AM known as 3D printing, to create real life models of the human connectome. The human connectome is a color coded map of the connections in the human brain where directions are indicated by colors and the density of connections are indicated by color intensity.</p> <p>There are several …
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Towards a triphasic Theory of Porous Media-based model for chloride-induced corrosion in reinforced concrete
… the majority of time-to-cracking service life models for reinforced concrete structures neglect the permeation of rust into the cement paste adjacent to the reinforcement, it is this mechanism that is responsible for discrepancies between experimental data and model results. The model …
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Generalised Markovian analysis of timed transition systems
… of large Markov chains which are derived from models of unrestricted timed transition systems. Timed transition systems may be described using several high-level formalisms, including Generalised Stochastic Petri nets, queueing networks and Queueing Petri nets. A system modelled with one of …
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Battery performance characterisation for stand-alone photovoltaic systems
… optimisation of PV system designs over the life of the system has been the lack of battery test data appropriate to PV applications. The main objective of this study was to determine accurate empirical data for locally available lead-acid batteries which could be used in photovoltaic systems …
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Parallel Image Reconstruction Systems for Magnetic Induction Tomography
… medical applications. This is because such real life models are often necessarily large and complex, and the computation is consequently highly time consuming. For instance, in the case of stroke detection and monitoring, which is one of the potential medical applications of MIT, it has been a …
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Total Temperature Probe Performance for Subsonic Flows using Mixed Fidelity Modeling
… flows remains critical for component life models and cycle performance optimization. While many techniques exist to measure these flows, immersed thermocouple based probes remain highly desirable due to well established practices for probe design and implementation in typical …
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Assessment and prediction of chloride ingress and carbonation in patch repair mortars
… which directly influence penetrability. Service life models for predicting chloride ingress and carbonation in the patch repair mortars used in this study were developed based on modified Fickian equations. The prediction profiles for chloride penetration were developed from a modified solution …
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An analysis of the impact of chloride-induced corrosion on reinforced concrete structures in the port of Cape Town
… constant maintenance throughout their service life. For infrastructure owners such as the Transnet National Ports Authority, whose infrastructure is mostly civil in nature and is exposed to severe marine exposure conditions, an improved understanding of each port's environment can lead to the …
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An experimental study of three aids in the teaching of drawing
… a total of five drawings of two different still-life models. The models were simple three dimensional forms painted different shades of gray forbetter visibility.The general objectives of the research were related to the experimenter's expectancy that he would arrive at a -better understanding of …
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Studium vlivu vícefaktorového namáhání na dielektrická spektra izolačních materiálů
Předložená práce se zabývá studiem vlivu kombinovaného namáhání (tepelného a elektrického) na průběh relaxačních jevů v materiálu za definovaných podmínek.
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Service life extension of reinforced concrete structures using hydrophobic impregnation
… as an inevitable phenomenon in the design life of reinforced concrete structures, due to concrete being an inherently cracked material. The presence of cracks within the cover zone changes the dynamics of transport mechanisms and corrosion development. Cracks provide preferential ingress …