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 94 for “"rack"”.
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Delegation for Multi-Threaded and Rack-Scale Software
Delegation is a concurrency technique where a thread hands off work on a shared object to a single designated owner instead of accessing the object directly. Because only the owner thread ever mutates the object, no locks are needed, other threads interact with it by sending requests. This avoids …
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Studying the Interaction of RACK-1 and GLD-1 in the Germline of Caenorhabditis elegans
… influence of highly conserved scaffold protein RACK-1 (Receptor for Activated C Kinase 1) and translational repressor GLD-1 (Defective in Germline Development 1) on the proliferation differentiation decision of GSCs. RACK-1 is involved in ribosome assembly and the miRISC pathway. Meanwhile, …
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Effect of stocking density at the feeding rack and social rank on the behaviour of Icelandic heifers
… the effects of stocking density at the feeding rack on both the social and maintenance behaviour of heifers. Furthermore, it was the aim to study possible interactions of stocking density with the social status of the animals. Two groups of nine Icelandic dairy heifers each were used in a cross …
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The influence of semi-rigid connections on the non-linear behaviour of pallet rack and scaffold structures
… on the scaffold behaviour. The papers on pallet rack structures provide information on the influence of semi-rigid connections in pallet rack performance. The paper describing the numerical modelling of boltless connectors is the first reported research into analysing these connections …
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Aspects of the Requirements of ISO 15263.4 and the Design and Development of Bicycle Racks
… in developing safety standards for bicycle racks for cars. A draft international standard (ISO 15263.4) has been developed. However, there have been many objections to the proposals and a redraft has been made. This study aims to investigate a part of the standard that involves performing …
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Analysis and evaluation of a reusable engine packaging system
… and boundary conditions for modelling the engine rack prototype was undertaken prior to comparing the FE model with the set of obtained experimental data. Simulated environmental conditions were used to predict the response of the rack in terms of engine displacement at the points of contact with …
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Seismic Evaluation and Performance Enhancement of Industrial Storage Racks
The use of industrial storage racks in large warehouse stores and the public’s direct access to merchandise on these racks has significantly increased over the last twenty years. Such racks and their supported merchandise have in some cases performed poorly in past earthquakes as a result of rack …
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A finite element study of bending stress variation in meshed spur gear pairs
… a circular gear with five teeth or a five-tooth rack. A unit torque (1 lbf-ft) was applied as the form of nodal forces on the nodes around the bore hole of the driver pinion. The nodes around the bore hole of the driven gear (or the nodes along the back of the driven rack) were fixed. In order to …
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A series-stacked power delivery architecture with isolated converters for energy efficient data centers
… way of delivering DC power to a server rack in data centers generally contains a central converter that regulates a DC bus, which is typically at 380V rectified grid voltage. This 380V bus voltage is in turn fed to each server rack and one DC-DC converter per server then converts the DC …
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Oversized Package Placement Optimization in Warehouses
… (non-OV). Currently, the placement of OV to OV racks is coupled with non-OV placement to non-OV racks because Amazon’s algorithm does not explicitly assign OV to a rack but places it in the rack where the non-OV package of the closest delivery destination is. The result is frequent overflow from …
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Design of a mechanical system for tillage tool depth control on small farm tractor
… system that incorporates a self-locking rack and pinion jack, load-bearing sliding surfaces, and rack clamp that is used to secure the cultivator sweep. The design is evaluated for deformation and deflection at the maximum theoretical loads using Finite Element Analysis. The design …
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Wind shielding in refining and petrochemical facilities
… that is provided by the vast network of pipe rack structures that encircle these densely arranged facilities. The probabilistic model is built from data obtained through a broad sampling of pipe rack configurations simulated with hurricane-force winds using computational fluid dynamics (CFD). …
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Effects of DFO-Induced Hypoxia on Key Signaling Mediators
… reported that receptor associated C kinase (RACK-1), interacting with the transcription regulator Poly C Binding Protein (PCBP-1), can negatively regulate MOR gene expression using a yeast two-hybrid screening system. RT-PCR analysis revealed an increased in RACK-1 expression while a decrease …
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Feedback control of transient smoke emissions from compression ignition engines
… was used to derive the models of speed-to-fuel rack and smoke-to-fuel rack. The nonlinearity of the model of smoke-to-fuel rack was investigated in a preliminary way. Two kinds of controllers, non-adaptive controllers and self-tuning controllers, were developed and implemented on a real engine. …
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Design and analysis of the front suspension geometry and steering system for a solar electric vehicle
… the vehicle. The steering system consists of a rack and pinion connected through tie rods to the steering knuckles, largely optimized based on the space within the vehicle. The final suspension geometry consists of upper and lower wishbone lengths of 4.25 inches and 3.75 inches, respectively. …
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Monolithic electronic-photonic integration of the light-emitting transistor
… the initial optical interconnect from server rack-to-rack solution to intra-chip connection. The light-emitting transistor (LET) has good potential as an optical signal source for both applications because of its tilted charge dynamic mechanism in the base terminal, which enables fast optical …
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Economic performance of modularized hot-aisle contained datacenter PODs utilizing horizontal airflow cooling
… The airflow travels horizontally from rack-to-rack with respect to cold air delivery and warm air return. Airflow travel is subsequently reduced to only 10 feet per cooling cycle. This thesis will explore the economic benefits and economies of this new airflow paradigm against …
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Tabletop robot to aid in arm rehabilitation of stroke patients
… The arm brace, which I designed and built, had a rack and pinion setup with a variable voltage regulator to control its vertical motion and a foam and linear spring combination to allow for yaw, pitch and roll while still providing for support. Testing of the prototype proved extremely valuable in …
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Backpack Energy Harvester with Human Walking Model
… were investigated, pure damping, traditional rack pinion energy harvester and our MMR based energy harvester. A comparison in the output power and human comfort between the three types of harvesters is discussed. However, the dual-mass model could not effectively represent human walking in …
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The design and analysis of static pallet racking systems.
The essential purpose of a pallet racking system is to support the largest load possible in relation to its self weight, while maintaining ready access to individual pallets and preventing damage to stored goods. This should be achieved within the constraints imposed by design and safety …
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