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 20 of 230 for “"Rate of Change"”.
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On the role of student understanding of function and rate of change in learning differential equations
… resources students utilize while in the process of completing various differential equations tasks. In addition I explore how this utilization changes over the course of a semester, and how resources related to the concepts of function and rate of change supported the students in completing the …
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Choose Your Words: Refining What Counts as Mathematical Discourse in Students' Negotiation of Meaning for Rate of Change of Volume
<p>The purpose of this study is to describe how university honors calculus students negotiate meaning and language for conceptually important ideas through mathematical discourse. Mathematical discourse has been recognized as an important topic by mathematics education researchers of various …
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An investigation of the rate of change of CD4 and CD8 T lymphocyte counts and viral loads in HIV infected patients on immune boosters
A thesis submitted in partial fulfillment of tine requirements for the Degree of Master of Technology: Biomedical Technology, Durban University of Technology, Durban, South Africa 2007.
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Distributed parameter estimation for complex energy systems
… In this thesis, we model components in terms of their own internal dynamics and output variables at the interfaces with the neighboring components. We then propose to use a distributed estimation method for obtaining the parameters of the the component's internal model based on the …
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Accurate frequency estimation with phasor angles
A power system should always operate in a balanced and stable condition at its designed frequency. Any significant upset of this balance will produce a change in the power system frequency. It is the responsibility of the monitoring and protective devices to detect and restore the system to the …
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Incidence and determinants of change of initial HAART regimen among outpatient HIV infected adults at the University of Teaching Hospital in Lusaka, Zambia
Introduction: Durability of the first highly active antiretroviral therapy (HAART) regimen is a major key to long term access, scalability and sustainability of an HIV treatment program. It is important to know the incidence rate of initial HAART regimen change, the reasons and factors associated …
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The oxygen uptake by pseudomonas fluorescens on glucose, xylose, arabinose and acetate under varying conditions of substrate concentration and environmental temperature
Industrial waste pollution is a problem of considerable magnitude and of great importance to modern industry. One critical aspect of waste pollution is reduction of dissolved oxygen in natural waters resulting from the oxygen uptake of bacteria while digesting organic wastes. Fundamental …
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A Consistent Design Sensitivity Analysis Formulation for Systems With History-Dependent Response
Design sensitivity analysis is the determination of the rate of change with respect to design parameters of a given performance measure which generally can be cast in the form of a functional. The functional typically exhibits both explicit dependence and implicit dependence (via the response) on …
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Variable Precision Tandem Analog-to-Digital Converter (ADC)
… which varies its precision as a function of input slew rate (maximum signal rate of change), in order to best follow the input in real time. It uses Flash and Successive Approximation (SAR) conversion techniques in sequence.</p> <p>As part of the design, the concept of "total real-time …
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Forecasting Short Term Trends in Prices of U.S. Stock Market
… this model recognizes the limited applicability of instantaneous rate of change indications from the current stock price of an individual corporation. Discussed first is the nature of share price as a data vector and derivations of linear and non-linear mathematical operators. A proposed …
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Influence of solvent on the infrared spectrum of carbon monoxide adsorbed on platinum electrodes
The behavior of adsorbed carbon monoxide on platinum was studied using potential difference infrared spectroscopy. Three solvents and three electrolytes were chosen, and data gathered at both high and low adsorbate coverages. The rate of change of IR peak position with applied potential, the Stark …
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Facility-Specific Radiation Exposure Risks and Their Implications for Radiation Workers at Department of Energy Laboratories
… framework for evaluating the occupational risks of exposure to hazardous substances in any setting where As Low As Reasonably Achievable (ALARA) practices are mandated or used. The evaluation is performed by developing a hypothesis-test-based procedure for evaluating the homogeneity of various …
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Changes in the clotting viscoelasticity caused by cardiopulmonary bypass (CPB) surgery
One to three percent of the Open Heart Surgery procedures have abnormal bleeding due to acquired platelet dysfunction. Standard clotting tests to determine the cause of bleeding usually take between 25 and 60 minutes to get results. This time frame is not useful for deciding what type of treatment …
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Fluvial systems : a re-evaluation of Horton's laws
<p>The number of different order streams entering a channel of known order can be approximated by a geometric progression similar to the Law of Stream Numbers. Hence, the frequency and order of different size tributaries along any channel can be described by a single parameter. Similarly, the …
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Lewinian interdependence theory, dynamics, and tension systems: an application to social support and game theory
… have suffered from a failure to incorporate dynamic behavior into theory. Dynamic behavior is the rate of change of behavior and the forces that cause change. Not much is known about dynamics, but fifty years ago Lewin linked interdependence to dynamics; his ideas were articulated in …
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Can nurture alter nature? The effects of a parenting intervention program on reducing antisocial behaviors
Multiple correlates of antisocial behaviors, ranging from genetic and biological factors (such as temperament) to environmental influences (such as parenting), have been implicated in previous research. Most contemporary researchers recognize an interactive relationship between the innate and …
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Estimating the rate of technical change in the oil and gas industry using data from private and national companies
… and natural gas has been a critical undertaking of many governments, companies, and analysts. The most important goal of this exercise is to effectively project the price of crude oil and natural gas to inform and shape today's decisions. Most long-run energy models in use today are unable to …
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Developing and Evaluating the Efficacy and Feasibility of Delivering a Psychoeducational Individual Intervention to Women with Advanced Stage Ovarian Cancer: A Two Phase Study
PURPOSE: The purpose of this study was to assess the psychosocial needs of women with ovarian cancer treated at Baylor University Medical Center Sammons Cancer Center, and to design and evaluate the feasibility and efficacy of an individual psychoeducational intervention on reported symptoms of …
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Design and implementation of an automatic poly registration control system in a hygienic industry
The main objective of this thesis is the design and implementation of a global and automatic poly registration manufacturing system in diaper industry. The project is implemented and administrated by Irving Personal Care (IPC). The results obtained allowed IPC to grow, compete in the diaper market …
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