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 117 for “"step-up"”.
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Team Step Up Program
… student behavior. Implications of the Team Step Up Program on the at-risk population and the impact on the researcher's leadership growth are discussed.</p>
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Stepping out to make a step up through testing interventions
… general improvement of the scores for both groups, not all students achieved the desired level.</p>
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Long-Term Effects of the Step-Up Program on Parent Participants
… intervention programs have been developed. Step-Up is a family-level group format CPA intervention program administered by the juvenile justice system in King County, Washington. Step-Up is designed to facilitate healthy parent-child relationships and stop adolescents' violent behavior. In …
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High Step-Up/Down Transformerless Multilevel Converter for Renewable Energy Applications
<p>This thesis focuses on a high step-up/down transformerless dc-dc modular multilevel converter (MMC) that would be applicable to dc power systems. The design achieves high voltage ratios for interfacing renewable energy sources such as photovoltaic and line interactive Uninterruptible Power …
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Advanced topologies of high step-up DC-DC converters for renewable energy applications
… developing several advanced topologies of high step-up DC-DC converters to connect low-voltage renewable energy (RE) sources, such as photovoltaic (PV) panels and fuel cells (FCs), into a high-voltage DC bus in renewable energy applications. The proposed converters are based on the combinations …
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Analysis and design of compact and efficient high step-up flying capacitor multilevel converters
This Thesis was approved for publication on 2017-04-28 at 15:10.
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Modular Photovoltaic (PV) Step-up Converter With A Coupled Power Balancing Scheme for DC-Distributed System
… PV power converter with high voltage gain and coupled power balancing stages is developed. The first part of this dissertation focuses on the development of a novel current-sensor-less maximum power point tracking (MPPT) technique utilizing a single voltage sensor for the devised high voltage …
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Growth and production performance of egg-type chickens reared on modified step-up protein feeding regimens
… were used to evaluate the effect of modified step-up feeding programs on growth from 0-20 weeks of age and production from 20-72 weeks of age. Crude protein levels of the isocaloric diets were as follows: treatment 1 (control): 18% CP from 0-6 weeks of age, 15% from 6-14 weeks and 12% from …
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Adaptive Control of a Step-Up Full-Bridge DC-DC Converter for Variable Low Input Voltage Applications
… current source. The converter is designed to step-up the low voltage input to an acceptable level that can be inverted to a 120/240 VAC 60Hz voltage for residential power. A DSP based adaptive control model is developed, taking into account line variations introduced by the input source while …
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3D Commutation-Loop Design Methodology for a SiC Based Matrix Converter run in Step-up mode with PCB Aluminum Nitride Cooling Inlay
This work investigates three-dimensional power loop layout for application to a SiC based matrix converter, providing a symmetric, low-inductance solution. The thesis presents various layout types to achieve this design target, and details the implementation of a hybrid layout to the matrix …
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The Effect of a Low Sodium Curing Solution on Further Processed Hams and Bellies from Purebred Berkshire Pigs Fed a Step-up Ractopamine Feeding Program
… (RAC) when fed at doses of 5 to 10 mg/kg for up to 35 days prior to harvest on carcass cutability and belly quality of finishing pigs. The objective of the second study was to determine the effect of a lower sodium curing solution on processing characteristics of hams and bellies from purebred …
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Bilateral and unilateral resistance training and athletic performance
… reliability of the one repetition maximum (1RM) step-up test (Chapter Three). Ten moderately trained participants completed four familiarisation sessions before two repeated strength testing sessions on separate days. Reliability was estimated as the typical error ±90% confidence limits (CL), …
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The design and control of mechanical switched mode drives
… gearbox. Two design variations are presented. A step-up mechanism that is unidirectional and capable of output velocities greater than the input, and a step-up/stepdown device that has bi-directional output velocity capabilities with no theoretical constraint on the value of output velocity. A …
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Reducing the Time It Takes to Execute a Legal Hold on Patients Currently on a Voluntary Status and to Transport Them to a Locked Inpatient Psychiatric Facility
… between departments involved in the “step-up” process. An improved level of communication is measured with the amount of time it takes to get patient from outpatient lobby to inpatient unit bed. This process begins when a patient is placed on a legal hold because they are a danger to …
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A hybrid switched-capacitor/inductor converter for small conversion ratios
A hybrid three-switch DC-DC step-up power converter for on chip applications is proposed. It is shown that the hybrid-three switch step-up converter can offer advantages such as reduced size of magnetic components, reduced MOSFET voltage stresses, improved closed loop control and can offer high …
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Implementation of ACR and AVR controls for high voltage gain DC-DC Converter
Step up power conversion is universally used in many applications. The application that uses step-up power conversion can be observed in renewable energy such as photovoltaic (PV) system, wind turbine, data center and Electric vehicle. There are many applications which use the DC-DC boost converter …
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Exit taxes in the context of double tax treaties: is the individual emigrating from South Africa protected against double taxation?
… the value that was subjected to the exit tax (step-up in the base cost). South Africa concluded only two treaties which provide for such a step-up in the base cost, one of which has not yet entered into force. This leaves the individual South African resident who emigrates, largely unprotected …
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Real time generation station simulator
… connected to an infinite bus through a Δ/Y step up transformer and two parallel lines. The operation of the generator is simulated under normal or abnormal conditions of the power system or the generator itself. The system is simulated in two microcomputers and interaction between the …
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