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 21 for “"KIVA"”.
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Throughput optimization of multi-agent robotic automated warehouses
In 2003 Kiva Systems (now Amazon Robotics) introduced a new type material handling automation to the world. The system is based on the principle that the physical infrastructure that contains inventory should be mobile. Kiva achieved this remarkable advancement by employing a fleet of robots to …
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Studio e sviluppo di un motore a 2 tempi diesel veloce di nuova concezione per applicazioni automobilistiche
… investigated by means of a version of the KIVA-3V code customized by the University of Chalmers and modified by DIMeC. The customization of the KIVA-3V code includes a detailed combustion chemistry approach, coupled with a comprehensive oxidation mechanism for diesel oil surrogate and the …
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KIVA.ORG'S PERSUASIVE APPEAL: A BURKEAN ANALYSIS OF CHARITY PERSUASION
Kiva.org's (Kiva) success is explained using two rhetorical constructs based on Kenneth Burke's theory of dramatism as tailored to charity appeals: simplification (reducing of the representative anecdote) and completion (redeeming a hierarchy). These two constructs explain Kiva's unprecedented …
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Developing Guidelines for Collaborative Spaces Supporting Interdisciplinary Engineering Design Teams
… teams operating in the novel design space, the Kiva, at a design-consulting firm based in Pittsburgh, PA. The observation data provided 1) a list of significant participant behaviors to be examined and 2) interaction strategy design support (ISDS) procedures to be used during phase 2. Phase 2 …
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Optimizing Priority-Based Search for Lifelong Multi-Agent Path Finding
… strategies. Evaluations on warehouse-style and Kiva-style maps with varying agent densities show that learned policies can significantly boost throughput in congested warehouse layouts, while identifying scenarios where classical heuristics remain competitive. Our findings provide guidance on …
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Charitable Giving to Distant Others: An extended theory of planned behaviour model
… study of Canadian charitable donor behaviour on Kiva.org. Results showed that donors lend on Kiva because of the difference they are making in someone’s life and because they have the ability to demonstrate caring. There was a strong, positive correlation between the popularity of loans by …
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An Archaeological Investigation into Social Organization and Political Reform in the Reserve Area of New Mexico, A.D. 1000–1350
… data from archaeological sites with great kivas in the Reserve region of west-central New Mexico dating to A.D. 1000-1350 and examines sociopolitical organization and reform between the dynamic Reserve (A.D. 1000-1100) and Tularosa (1100-1350) Phases. Specifically, studies in this thesis …
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Sviluppo e validazione di un modello di film fluido per simulazioni CFD di motori a combustione interna
… has been implemented in a customized version of KIVA code developed at University of Bologna. Under the hypothesis of `thin laminar ow' the model simulates the dynamics of a liquid wall film generated by impinging sprays. Particular care has been taken in numerical implementation of the model. …
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Modeling of biofuel-diesel multi-component fuel effects on vaporization, micro-explosion and combustion
… fuels was investigated by using a modified KIVA code to perform the simulations. The biodiesel and diesel blended fuel mixture can be used directly in a traditional diesel engine without any modifications, and by adjusting mixture content, injection strategy, and exhaust gas recirculation …
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Biomolecules that impact phenotypic transitions in fibroblasts and macrophages
<p>Macrophages and fibroblasts are intricately involved in many biological responses. The foreign body response (FBR) is orchestrated by macrophages, wherein the phenotypes of these macrophages exist plastically along a spectrum from M1, proinflammatory macrophages to M2a, anti-inflammatory, …
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Combustion simulations in Diesel engines using reduced reaction mechanisms
… models were implemented in a standard CFD code, KIVA and used to simulate the combustion in a Caterpillar engine, for which experimental data were available. Ignition was observed to occur at the edge of the spray, in the lean region. Simulated pressure curves and mean NO concentrations were …
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A droplet evaporation model for high temperature and pressure spray applications
… model has been implemented and tested into the KIVA multidimensional simulation which models gas flows, sprays, and chemical reactions in internal combustion engines. The new model has been tested against experimental data for single droplets and sprays. The range of ambient temperatures and …
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Coupling of Chemical Kinetics with Computational Fluid Dynamics in a Three-Dimensional Engine Model
… this study is to enhance the combustion model of KIVA, a computational fluid dynamics code, by coupling its fluid mechanics solution with detailed kinetic reactions solved by the chemistry solver, CHEMKIN. As a result, an engine-friendly reaction mechanism for n-heptane was selected to simulate …
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Startup operations and supply chain road guide proposal, based on Robotics Cluster case studies
… at existing robotics startups (Artaic LLC, Kiva Systems, Rethink Robotics and Boston Engineering) to obtain information regarding their strategic decisions in specific aspects of their Supply Chain and Operations. These interviews are reflected as case studies of these companies. The third …
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The Chaco connection: Bonito style architecture in outlier communities
… "internal" variables such as banded veneers and kiva/room ratio were compared across the outlier data base. If outlier Bonito style architecture had a central, Chaco Canyon source, internal variables were expected to exhibit similarity; if the architecture was constructed under local direction, …
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Modeling of droplet evaporation, flash-boiling, and mixture preparation in internal combustion engines
… into a customized engine CFD software, KIVA, to simulate the droplet evaporation in fuel spray. Flash-boiling of spray generates ultra-fine fuel mist and is potentially beneficial to the mixture preparation. The author examines the existing model for the droplet flashing breakup. The …
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