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 22 for “"cost of transport"”.
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COST OF TRANSPORT, LOWER LIMBS ASIMMETRY AND THE DYNAMICS OF RUNNING.
The main topic of my PhD project regards the effects of the human symmetry on energetic and locomotion. The concept of symmetry, applied in many and different fields, from arts to physical sciences, has been always related to beauty, balance and equilibrium. Most individuals, animals and humans as …
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Understanding the effects of wearing a quantitatively prescribed passive-dynamic ankle-foot orthosis on the mechanical cost-of-transport and gait velocity in individuals post-stroke
… orthoses (PD-AFOs) to aid in the control of shank forward rotation during mid-to- terminal stance due to plantar flexor weakness. PD-AFO bending stiffness is a key orthotic characteristic that can assist the plantar flexor muscles by providing the resistance needed to control shank forward …
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Socio-economic Status and Barriers to the Use of Free Antiretroviral Treatment for HIV/AIDS in Enugu State South-East Nigeria
… with the access barriers faced by the users of free ART in Enugu State, southeast Nigeria. [ Design ] Cross sectional study Methods The study was conducted in two purposively selected sites/facilities (one public and one private) administering free ART. In each of the two facilities, 120 …
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Characterization of gait energetics for electrically actuated quadrupeds
Despite the development of many quadrupedal robots and variety of possible running gaits, relatively little is known on the mechanisms that interplay between gait patterns and efficiency of quadrupedal machines. To gain insight on the energetics of robotic running, this work presents a study of the …
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Integrating bioenergetics and foraging behavior : the physiological ecology of larval cod (Gadus morhua)
… morhua, balance foraging effort against the high cost of swimming in a viscous hydrodynamic regime? A respirometry system was developed to measure the activity metabolism of individual larvae. The cost of swimming was modeled as a power-performance relationship (energy expenditure as a function of …
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Integrating bioenergetics and foraging behavior : the physiological ecology of larval cod (Gadus morhua)
… morhua, balance foraging effort against the high cost of swimming in a viscous hydrodynamic regime? A respirometry system was developed to measure the activity metabolism of individual larvae. The cost of swimming was modeled as a power-performance relationship (energy expenditure as a function of …
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Behavior, Energetics, And Swimming Performance Of The American Paddlefish, Polyodon Spathula, In A Lower Mississippi River Oxbow
Paddlefish often frequent oxbows and backwater habitats between periods of migration. Speculation as to the use and energetic savings associated with this seasonal residence has not been substantiated. This study used radio telemetry to track the seasonal movements and swim tunnel respirometry to …
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An evaluation of changes in supply structure on the economic viability of farm supply cooperatives
The volatile economic world of agriculture in the past two decades has had a significant impact on agribusinesses. Among these agribusinesses are farm supply cooperatives. Consolidation of farm supply cooperative stores could help to correct many inefficiencies which they face. This research …
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Understanding preferred leg stiffness and layered control strategies for locomotion
<p>Despite advancement in the field of robotics, current legged robots still cannot achieve the kind of locomotion stability animals and humans have. In order to develop legged robots with greater stability, we need to better understand general locomotion dynamics and control principles. Here we …
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Optimizing Snake Locomotion on a Plane: A Variational and Analytical Framework for Friction and Normal Force Modulation
Snake locomotion represents one of the most versatile and efficient forms of limbless movement across diverse terrains. This thesis develops an analytical framework to investigate the optimal body shapes and gaits that maximize locomotor efficiency and speed for elongated bodies interacting with …
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Characterisation, Treatment and Utilisation of the Effluent from an Intensive Fish Farm
… control and management information on aspects of water quality in fish farming. The metabolic products produced by intensively farmed rainbow trout have been assessed and the production rates can be used to predict water quality. The water quality requirements of trout have been reviewed and …
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Design and evaluation of elements of a life support system for mechanical counterpressure spacesuits
Mechanical counterpressure (MCP) spacesuits offer several advantages over traditional gas-pressurized suits including lower energy cost of transport, reduced risk of decompression due to suit tear or puncture, and increased astronaut comfort. The BioSuit[superscript TM] is an MCP concept being …
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Effect of Air Carrier Restructuring Strategies on Post-bankruptcy Performance
… aviation industry. However, there is a paucity of research on the topic of air carrier restructuring during the post-bankruptcy period. General restructuring literature has identified four types of actions: operational, financial, managerial, and portfolio. The purpose of this study was to …
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Effect of Kinematics and Caudal Fin Properties on Performance of a Freely-Swimming Fin
… point inside uniform flow. A major drawback of such study is that neither it resembles a freely swimming fish nor it takes into consideration the dynamics of moving fish on propulsive forces. Hence, in our current study, we focus on comparing the performance of a free swimming fin over …
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Millipede-Inspired Locomotion for Rumen Monitoring through Remotely Operated Vehicle
There has been a growing interest in development of nature-inspired miniature mobile robotics, for navigating complex ground scenarios, unknown terrains, and disaster-hit areas. One application is the development of a remotely operated vehicle (ROV) for rumen monitoring to improve our understanding …
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Swimming in four goldfish (Carassius auratus) morphotypes: understanding functional design and performance through artificial selection
… (mitochondrial volume density and spacing, myofibril diameter and capillary to fibre ratio in red and white muscle) were measured for four morphotypes: common, comet, fantail and eggfish, of comparable length (≈ 5 cm). A performance “pairing” (common and comet; fantail and eggfish) was a …
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Elasticity of demand for red meat transportation : a gravity model analysis of Western Canadian pork exports
… Canadian pork exports. However, the flow of pork from Canada to the United States is affected positively and negatively by micro and macro factors. The major objective of this thesis is to estimate empirically the effects on Western Canadian pork exports of changes in income, hog …
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Influence of parental swimming stamina on the cardiac and metabolic performance of larval zebrafish (Danio rerio).
… in adult fish is presumably passed on to their offspring, but the ontogeny of the appearance of superior stamina and the requisite enhanced cardio-respiratory support for locomotion in larval fishes has not been determined. Is the expression of the suite of parental traits enabling superior …
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Towards an improved understanding of the biomechanical implications and risk of injury of barefoot running
Barefoot running is a subject of significant interest, both in scientific publications and in the lay media as a result of its alleged benefits for runners. These benefits include the potential to reduce injury risk, more economical running and broadly speaking, a better understanding of running …
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Spatiotemporal Signatures of Elastoinertial Turbulence
The addition of small amounts of polymers to a Newtonian solvent makes the fluid viscoelastic, and can lead to significant drag reduction in high-speed flows. The interaction of viscoelasticity and inertia in a dilute polymer solution results in the emergence of unique inertioelastic instabilities. …
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