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 25 for “"Field system"”.
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Agriculture and Settlement in Medieval Husthwaite and Baxby, North Yorkshire
… for an early-middle Saxon settlement and a field system of long lands. The establishing of a later complex common field system, its further restructuring and subsequent decline will be followed. The relationship between field system and settlement morphology will be discussed, and evidence …
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Mechanical design for the tactile exploration of constrained internal geometries
… developed. This thesis explores the design and system architecture of robotic manipulators for down-well tactile exploration. A design approach minimizing sensing is adopted to produce a system that is mechanically robust and suited to the harsh down-well environment. A feasibility study on …
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Assessing Net Returns to Blueberry Production Using a Decision Support Tool
… profitability of four highbush blueberry farming systems in the south: organic field production, conventional field production, organic high tunnel production and conventional high tunnel production. Four baseline budget scenarios, one for each system, are developed for a 15 year production …
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Development of MR Thermometry Strategies for Hyperthermia of Extremity and Breast Tumors
… can provide a benefit. These include magnetic field system drift, fatty tissue, and breathing motion.</p> <p>The purpose of this research was to develop a system for the hyperthermia treatment of LABC while performing MR thermometry. A hardware system was developed for performing the …
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Evaluation parameters for computer aided design of irrigation systems
… models for the design of pressurized irrigation systems. Particular emphasis has been given to the provision of routines for the evaluation of the expected performance from a designed system. Two separate sets of models have been developed, one for the block or in-field system and one for file …
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Dynamics of a fully stochastic discretized neuronal model with excitatory and inhibitory neurons
… behavior, since the model limits on a mean-field deterministic system with multiple attractors. Our work investigates adding inhibition into the model. The new model exhibits the same metastable phases, but also exhibits new non-monotonic behavior that was not seen in the DeVille et al. …
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Microfabricated magnetophoretic focusing systems for the separation of submicrometer particles
Magnetic separation is an actively researched field due to its broad applicability to the mineral, chemical, and biological industries. The objective of this work was to design, fabricate, and test systems to study magnetophoresis of particles in suspension. To achieve this goal, two system …
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Medieval landscapes and lordship in South Uist
… focuses on rural settlement (farms, townships, field- and transhumance-systems) and high-status monuments (churches, duns and castles). Developments visible in both the historical and archaeological record demonstrate that considerable social, economic and cultural changes took place within the …
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Walking through time: a window onto the prehistory of the Yorkshire Dales through multi-method, non-standard survey approaches
… places, geophysical survey, walkover survey, field-system, clearance, land tenure The large-scale field-systems, ubiquitous across upland and marginal parts of the Yorkshire Dales, are insecurely dated and poorly understood. Apart from some sporadic academic interest, the archaeology of this …
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Effects of hydraulic loading and laundry detergent on the operation of aerobic package treatment systems
… with the operation of aerobic package treatment systems: hydraulic retention time, laundry detergents, and hydraulic surges. To determine the effect of hydraulic retention time on system performance, six bench scale activated sludge systems were constructed. Wastewater from an actual residence …
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Microchannel flow fields for polymer electrolyte fuel cells
… conditions, fuel cell component design and flow field design to name a few. The optimisation of the flow field design for water removal has primarily focused on the use of flow channels which are in the minichannel range. This study investigated the use of a microchannel flow field design …
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Understanding the later prehistoric field systems of the Yorkshire Dales
… Of particular interest are a number of coaxial field systems, which cover hundreds of hectares and exhibit significant time-depth, yet remain little studied and poorly understood in relation to comparable resources elsewhere in Britain and north western Europe. This research aims to address this …
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An integrated design framework for future nuclear fusion power reactors
… DEMO reactors are generally designed with systems codes, tools which rapidly perform constrained optimisations on zero- and one-dimensional representations of all major fusion reactor systems to generate an initial design point. From such codes, a series of higher fidelity design activities …
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Excitation and readout Designs for high field spectroscopic imaging
… and research domain of human imaging at high field. First, we demonstrate a method for rapid and robust acquisition of the non-uniform fields of RF excitation due to arrays that are commonly used in pTx at high field. Our method achieves high-fidelity single-slice excitation and reception …
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Embedded Antennas In Concrete For Application In Wireless Sensors
… from outside concrete periodically through near-field transformer-like magnetic coupling. These antennas are our research area. Firstly, from discrete measured data of dielectric constant and conductivity published in literatures, we developed the formula to extend their using range to all …
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Settlement and community : their locations, limits and movement through the landscape of historical Cyprus
… houses indicates settlement, but so too does a field system - the farmers must live somewhere. Wherever there are people there will be settlement, from large concrete and glass urban centres to the tented impermanence of a nomads' camp. Settlement is a result of the human presence, but remains a …
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Study of magnetic helicity in solar active regions and its relationship with solar eruptions
… of twists, kinks, and interlinkages of magnetic field lines. Magnetic helicity has been recognized as a useful measure for these properties of a given magnetic field system. Magnetic helicity studies have been naturally directed to the energy buildup and instability leading to solar eruptions. …
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Evaluation of cyclic behavior of dense sands under multidirectional loading using centrifuge tests
… Moreover, typical drainage conditions in the field may be partially drained while shaking-induced vertical strains accumulate. This work forms a unique database of dynamic centrifuge “case-histories” that provide insight into the shear and volumetric response of dense coarse-grained soils …
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Emission properties of radiative chiral nematic liquid crystals
… broadening and the decay of electromagnetic field modes supported by the so-called 'mirror-less' cavity. We employ the Jaynes-Cummings Hamiltonian to describe the electron interaction with the electromagnetic field, focusing on the mode with the diffracting polarization in the chiral nematic …
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Soil quality and nitrogen cycling dynamics altered by fertility amendments in intensively managed vegetable production systems
… of the growing environment put these systems at greater risk for soil degradation. Identification of fertility practices that maintain soil quality and reduce negative environmental impacts is needed to improve the longevity and sustainability of these systems. The biological …
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