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.
Results
Showing 1 to 20 of 26 for “"Conceptual designs"”.
-
A critical artefact methodology : using provocative conceptual designs to foster human-centred innovation.
… develops a rationale for using provocative conceptual designs to foster the innovation of human-centred product ideas -a `critical artefact methodology'.</p> <p>This research employed similar tactics to Action Research (Swann 2002): cycles of action (using critical artefact methods in design …
-
Assimilating Non-Probabilistic Assessments of the Estimation of Uncertainty Bias in Expert Judgment Elicitation Using an Evidence Based Approach in High Consequence Conceptual Designs
<p>One of the major challenges in conceptual designs of complex systems is the identification of uncertainty embedded in the information due to lack of historic data. This becomes of increased concern especially in high-risk industries. This document reports a developed methodology that allows for …
-
Design methodology using empirical and virtual analysis with application to compliant systems
… customer need. The generation and evaluation of conceptual designs satisfying engineering and customer requirements is a primary purpose of existing methods. Numerical and experimental techniques often can determine the feasibility of meeting the specified performance requirements.
-
Conceptual design and performance characteristics of firebrick resistance-heated energy storage for industrial heat supply and variable electricity production
… of existing electrical energy storage options. Conceptual designs of FIRES heat storage on the megawatt-hour scale were found to be chargeable and dischargeable over periods of several hours or several days as needed. FIRES technology is ready for applications under 1200°C using existing …
-
Critical assessment of thorium reactor technology
… being considered for use with current and future designs in both large and small-scale energy production. Thorium-232 is as abundant on Earth as lead, far more common than all isotopes of uranium, leading to its greatly reduced cost. Thorium itself offers a significantly greater neutron absorption …
-
Design of a sodium-cooled epithermal long-term exploration nuclear engine
… Mars initiative, the current work has focused on conceptual designs for transformational and enabling space nuclear reactor technologies. A matrix of design alternatives for both the reactor core and the power conversion unit were considered. Based on a preliminary screening of technologies using …
-
The distributed air wing
… outlines the development and analysis of three conceptual designs that fall under the concept of the DAW: a dispersed land and sea basing concept that utilizes carrier-borne Navy and Marine Corps aircraft, a seaborne unmanned aircraft courier system, and a carrier-based unmanned air-to-air …
-
Integrated mining and preconcentration systems for nickel sulfide ores
… a competent material for minefills. The mix designs were examined for both strength and rheological properties and showed that fills utilizing rejects were comparable to fills currently used by industry. Composite fills containing rejects had significantly lower void ratios, decreasing cement …
-
Automated Design for Manufacturing and Supply Chain Using Geometric Data Mining and Machine Learning
… presents an automated method for assessing conceptual designs with respect to manufacturing and supply chain, using geometric data mining and machine learning algorithms. It is important for designers to understand how design decisions will impact downstream manufacturing and sourcing. Many …
-
Design considerations for variable power split hydraulic drives for industrial applications
… objective of this thesis is to develop a conceptual design procedure for development of a power split hydraulic variable transmission to be used in industrial applications. The procedure consists of a 15 step process which is outlined by means of a flow chart. The results of the procedure …
-
Thermal hydraulic design and analysis of a large lead-cooled reactor with flexible conversion ratio
… The goal of this project is to develop conceptual designs of fast flexible conversion ratio reactors using lead and liquid salt coolants and compare the results with the gas cooled fast reactor developed in an MIT NERI project and the sodium cooled reactor under development at ANL. This …
-
Space suit simulator for partial gravity extravehicular activity experimentation and training
… mobility of various pressurized space suit designs. A space suit simulator exoskeleton is a novel method for simulating joint torques while offering a lightweight, portable, and easily accessible design. This thesis describes early work towards development of the S3 exoskeleton. A space suit …
-
Coupled Sediment Yield And Sediment Transport Model To Support Navigation Planning In Northeast Brazil
… techniques have been developed and applied in designs of specific waterway development features within discrete reaches of a system. However, previous large scale waterway development planning has not incorporated both the sediment yield and sediment transport modeling necessary to develop …
-
Design development and performance study of a novel assistive device for mobility of toddlers and children with visual impairments
… paper, detailed construction methods for new conceptual designs are described, and how design was modified and implemented on to next design after tested for clinical trials with blind participants to approach to the final design. Moreover, underlying mechanisms that were adopted to resolve …
-
Design function deployment: a concurrent engineering design system
… in a solution neutral form, the generation of conceptual designs (architectures), the development of detailed designs layouts), the selection of materials and associated manufacturing processes and the development of suitable production plans. The generated design solutions are optimised …
-
Five things (and a series of comments on liberal space, the demise of the square, and alternatives for its substitution)
… this backdrop, this thesis experiments with conceptual designs of public sociability spaces in five different coordinates of the representative democratic world: Sao Paulo (Brazil),Tixtla (Mexico), Hénin-Beaumont (France), Madrid, (Spain), and Sanford (United States). Each of this cities …
-
The Storytelling + Design Framework: Design Guidance for the Concept Phase of Medical Device Design
… contributions to the PtD initiative. First, a conceptual model for the role of storytelling in design, which represents a synthesis of narrative and design research, is presented. The conceptual model explicitly states how the elicitation and analysis of stories results in the identification of …
-
A knowledge-based design framework for airplane conceptual and preliminary design
… through improved design: more alternative designs can be evaluated in the same time span, which can lead to improved quality. (3) Reduced design cost: due to less training and less calculation errors substantial savings in design time and related cost can be obtained. (4) Improved …
-
Development and experimental investigation of new self-can cooling systems
In this thesis, two conceptual self-cooling beverage can designs are proposed. The methods of cooling are validated experimentally and certain parameters of interested are obtained for an analytical and numerical study of the conceptual designs. Optimization of the can geometry for heat transfer …
-
Compressed air storage for electricity generation in South Africa
… for South Africa were evaluated in chapter five, conceptual designs and cost analysis. The two types of CAES were conventional CAES and CAES with pressurised fluidised bed combustors (CAESIPFBC). Available plant was discussed and future generating capacities of individual CAES turbo-machinery …
Page 1 of 2