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 32 for “"heavy equipment"”.
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Acquisition, retention and transfer of heavy equipment operator skills through simulator training
<p>Initiatives and collaborations among heavy construction equipment manufacturing companies and training technology firms to develop and employ simulators for varied training purposes are becoming commonplace. However, human factors research on simulator training for operators of construction …
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Analysis and reduction of excess inventory at a heavy equipment manufacturing facility
… two hypotheses focused on excess inventory at a heavy equipment manufacturing facility. The scope of the thesis includes inventory in the form of raw materials, purchased components, and work in process parts found at the facility and in the off-site storage warehouse. The first hypothesis …
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Heavy equipment distribution framework for urban search and rescue operations and critical infrastructure systems restoration in disaster response
… to timely provide the rescuers with the adequate equipment to facilitate lifesaving operations and restoration of critical infrastructures. How- ever, management of high demand equipment is usually inefficient during disaster response. Prioritization of limited resources is one of the greatest …
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A preliminary study on path planning and obstacle avoidance for construction equipment based on real-time spatial models
On obstacle-cluttered construction sites where heavy equipment is in use, safety and productivity issues are major concerns. Efficient and effective algorithms for obstacle avoidance and path planning, based on real-time three dimensional spatial modeling, have the potential not only to obviate …
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Determining Optimal Supply Level for Intermittent and Low Demand Parts
One of the challenges in the heavy equipment aftermarket business is determining what optimal level of supply looks like for intermittent and low demand parts. For these parts, it is difficult to forecast the needed demand and set the right amount of inventory level. A number of these parts are …
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Characterization of infield vehicle activity data and exhaust emissions from diesel powered off-road vehicles
… emissions from diesel-powered off-highway heavy equipment that were exercised on steady-state and transient cycles. Two vehicles were evaluated in this study, a streetsweeper (114 hp) and a rubber-tired loader (110 hp). Due to the lack of appropriate transient cycles available for these …
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Mobility-Aid Smart Pants with Embedded Harness for Daily Use
… gait training is often inaccessible due to the heavy equipment required, impractical to purchase for individual use; giving patients more optionality in their mobility aids through everyday wearables could improve the overall health of the mobility-aid user population. In particular, smart …
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Conflicts and Convergences of Preservation, Modernism and Sustainability in the Richards Medical Laboratories Renovation
… historic landmark, a Modernism masterpiece and a heavy equipment-bearing facility, the building had to meet satisfactory results for all the criteria as strict as possible: preservation, Modernism and sustainability. Every Mid-Century rehabilitation project accommodates similar requirements, …
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Midwest Subcontracting, Inc.
… Subcontracting, Inc., was reviewing his major equipment acquisitions and their relative financing costs. Midwest Subcontracting is a medium-sized excavating and general contracting firm located in a major metropolitan city. | During the past year and a half, Midwest had been steadily replacing …
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Distribution and physical parameters of solid waste disposal sites in Southwestern Virginia and the nature of leachate emissions
… ha. An estimated 32 workers and 40 pieces of heavy equipment were utilized for the disposal of the waste at the various dumps, landfills, and sanitary landfills. The largest number of disposal sites were operated as dumps (62%), while only 14% of the sites qualified as sanitary landfills. The …
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Vertical Take-Off and Landing Control via Dual-Quaternions and Sliding Mode
… system as it is the only effective way to bring heavy equipment or people to a planetary surface.</p> <p>A robust, efficient, and easy-to-use controls algorithm will be formulated to solve this controls problem known as the \emph{soft landing problem}. Through representing rigid body motion with …
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Enhanced Biodegradation in Landfills
… is above 45%, but it is not safe to operate heavy equipment on refuse with greater than 45% moisture. Initial aeration did not speed up the overall degradation, but it did shorten the acidogenic phase. Finally, biosolids did not have a significant effect on degradation rates. The columns …
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Occupational health hazards and their effects on the health of nurses at Mankweng Hospital in Limpopo Province, South Africa
… night shifts and lifting of patients and heavy equipment. Results: The outcomes of the study presented that 17.7% of respondents were male and 82.3% of respondents were females. The results showed that 72.8% of respondents were exposed to drugs or disinfectants, theatre gases or D-germ. It …
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A Control System for the Reduction of Cargo Pendulation of Ship-Mounted Cranes
… boom. Such a control can be achieved with the heavy equipment that is already part of the crane so that retrofitting existing cranes would require a small effort. Moreover, the control is superimposed on the commands of the operator transparently. The successful control strategy is based on …
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A NOVEL APPROACH TO NEAR-REAL TIME MONITORING OF VENTILATION RATE AND INDOOR AIR QUALITY IN RESIDENTIAL HOUSES
… table and blower door test but it requires heavy equipment and skilled work force, which is difficult to implement in occupied houses.</p> <p>In this dissertation, a methodology is developed to determine the air change rate (ACH) and indoor air quality (IAQ) in near-real time by combining a …
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Improving Human Safety through Integrated Autonomous Motion Planning
… an increased risk of injury from collisions with heavy equipment or moving objects. To improve human safety in these scenarios, visual feedback is recommended to enhance a person’s situational awareness and reduce the number of collisions. Previous work on human-centric approaches have used either …
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Risk Mitigation in the West Coast Commercial Fishing Fleet
… Working in rough seas for long hours with heavy equipment is notoriously hazardous and harvesters face some of the highest fatal and non-fatal occupational injury rates. Harvesters also face some of the highest financial risk across occupations as their income can vary greatly from demand …
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Essays on Platform Mergers and Dynamic Price Competition
… which is an online auction marketplace for used heavy equipment by Ritchie Brothers Auctioneers, which operates the largest offline auction marketplace. As is quite common after platform mergers, RBA maintained both platforms but made it easier for buyers of equipment to search across the …
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Design and dynamic simulation of mobile manipulators incorporating tribological analysis of 16MnCr5 and EN19 steels.
… area in spite of which reports show that heavy equipment like excavators are still used in SAR operations despite their unsuitability. Literature reveals the need for new designs for application-specific manipulators in time-critical SAR operations. To this end, the Computer Aided Design …
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The effect of a lower-Body exoskeleton on physical and cognitive warfighter performance
United States warfighters carry very heavy equipment into battle; robotic exoskeletons offer a promise to off-load the warfighter. While exoskeletons are currently evaluated for their effects on the user's physical performance, their cognitive effects are not currently considered in the literature. …
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