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 29 for “"routine maintenance"”.
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Challenges of maintaining highly specialised infrastructure facilities at an institution of higher learning in South Africa
… that facilities managers encounter in performing routine maintenance work and the impact of inadequate maintenance on highly specialised facilities at a South African higher education institution. The primary aim of this study was to understand the challenges associated with maintaining highly …
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Optimization of Long Range Major Rehabilitation of Airfield Pavements
… and schedule major rehabilitation activities (routine maintenance, reconstruction, and overlays) over an extended analysis period. A computer code was written to use dynamic programming methods to optimally select schedule the activities (routine maintenance, reconstruction, and overlays) over …
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Isolation of Legionella Pneumophila From Well-Maintained Emergency Showers and Eyewash Stations
… the stations within this facility were under a routine maintenance program that included at least monthly flushing. This study also included the analysis for other bacterial organisms to determine an association between the presence and concentration of other bacteria and Legionella. All samples …
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Development of Longitudinal Stability Criteria for Surfaced Submarines Through Use of Near Real Time Modeling
… trim angles under five scenarios: intact, routine maintenance, head on collision damage, glancing collision damage to the bow, and glancing collision damage to the stern. An Excel VBA program, Submarine Longitudinal Stability Analysis Program (SuLSA), was also developed as part of this …
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Development of real time non-intrusive load monitor for shipboard fluid systems
… U.S. Navy has long used a requirements driven maintenance program to reduce the number of total system failures by conducting routine maintenance and inspections whether they are needed or not. In order to combat this problem the Navy will inevitably have to turn to a condition based …
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Identifying Key Factors for the Implementation and Maintenance of Green Stormwater Infrastructure
Construction and maintenance can have huge implications on the long-term functioning of GSI facilities. GSI facilities investigated were bioretention, permeable pavement, sand filters, infiltration trenches, and vegetated swales. This study first highlights the most important construction and …
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Development of a Minichannel Compact Primary Heat Exchanger for a Molten Salt Reactor
… in modern compact heat exchangers do not allow routine maintenance to be performed by standard procedures, so extended surfaces will be omitted and hydraulic diameters will be kept in the minichannel regime (minimum channel dimension between 200 μm and 3 mm) to allow for high-frequency eddy …
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Capturing Stormwater Nitrate and Phosphate with Sorptive Filter Media
… and low influent phosphate concentration. Non-routine maintenance improved the hydraulic performance of the pond perimeter IESF and, after a rinsing event, also improved phosphate retention rates to an average of 45%. An IESF was installed to treat agricultural tile drainage and found to reduce …
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Novel Use of Neural Networks to Identify and Detect Electrical Infrastructure Performance
<p>Electrical grid maintenance and repairs are crucial services that keep America’s lights on. Electrical service providers make it their priority to uphold minimal interruptions to this service. Electricity is essential for modern technology within the home, such as cooking, refrigeration, and hot …
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Command Climate and Ethical Behavior: Perspectives from the Commandant's of the Marine Corps
… the organization; climate must be focused on the routine maintenance of core values, and the character development of the individual Marine; and the ethical behavior of the individual Marine is the best way to continue to win the hearts and souls of the American people. This study hopes to …
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Damage detection and monitoring for tunnel inspection based on computer vision
… engineers. Visual inspection, as part of the routine maintenance procedures, is a common practice used in the condition assessment of infrastructure to ensure its safety and serviceability. This practice, however, is labour-intensive, costly and inaccurate and, therefore, a new system based on …
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Predicting corrosion on protected buried steel natural gas distribution pipelines
… the second question by using the previous year's routine maintenance and weather data with a mean average percentage error ranging from 40% to 81%. The significant factors in a given CPA that consistently drive the model include: the length of steel main pipe and average temperature.
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Network management and control of flow-switched optical networks : joint architecture design and analysis of control plane and data plane with physical-layer impairments
… with data network architecture, while other routine maintenance type of control plane functionalities contribute either a fixed amount or negligibly to the total efforts. We considered two possible Wide Area Network architectures: meshed or tunneled, and developed a unified model for data …
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Variables That Contribute to Job Satisfaction in Secondary School Assistant Principals
… their responsibilities are extending beyond the routine maintenance of discipline and attendance programs. Examination of the data revealed that the hypothesized models did not fit the data. Of the variables theorized to explain job satisfaction, age, compensation, and opportunity for advancement …
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Property management practices of federally assisted multifamily housing in Virginia: a comparison of nonprofit-owned with government- and for-profit-owned housing
… practices, financial management practices, maintenance procedures, and services provided to residents and b) to determine how much variance in these management practices is explained by type of owner, owner's goals for property , property manager's qualifications, and neighborhood …
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Constructing Accurate Synopses for Database Query Optimization and Re-optimization
… are used to generate periodic reports, perform routine maintenance, summarize data for analysis, etc. They can constitute a large part of daily activities of a database system and deserve more optimization efforts. In this paper, we propose to collect information about how tuples are joined in a …
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Design and Implementation of a Distributed Executive
… operations and outer-space exploration to the maintenance of underwater infrastructure. In many of these scenarios, such as the routine maintenance of a distant space station, collaboration between multiple robots becomes essential. However, the vastness of space or the depths of the oceans …
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A Computational Fluid Dynamics based model that predicts wall shear stress in CANDU outlet feeder pipes
… pipes for wall thickness measurements during routine maintenance and hence replace the required feeder pipes to avoid any unplanned shut down due to safety reasons.
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Investigating pedestrian safety solutions on rural high-order roads. Case-study: R71 Polokwane
… on consistent energy sources and may require routine maintenance. A solution framework based on the pedestrian safety risk identified on the R71 is designed to guide countermeasure selection and design in rural contexts. In the end, solutions deemed suitable for the rural context are: …
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A study on the debris found in a pervious concrete sample
… debris from a pervious concrete sample through routine maintenance.
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