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 22 for “"Weighting factor"”.
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From cost-effectiveness to economic-efficiency in conservation planning: the importance of considering the economic benefits of conservation
… 1 = 10.44 vs. scenario 4 = 1.15). When heavy weightings (> 100) were applied, the reserve systems became dispersed (R = 0.91 (for weighting factor of 10), R = 0.52 (for weighting factor of 1000)) in the former homelands and more costly overall (difference of R2.95B between the extremes). …
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Sensitivity of Distress Rate to Observed Distress Levels
… pavement distress severities and extents with a weighting factor assigned for each distress. Until 2013, NMDOT conducted pavement evaluations manually and in 2012 revised how pavement distress data were collected and evaluated. The two pavement distress collection procedures that were altered the …
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Optimal Finite Control Set Model Predictive Control Strategies for Induction Motor Drives
… variable included in the cost function has a weighting factor according to different magnitudes and units. Weighting factor tuning is a non-trivial and complicated task, particularly when the control algorithm has two control-objectives which are prime variables i.e., torque and flux. In such …
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Statistical Modeling to Information Retrieval for Searching from Big Text Data and Higher Order Inference for Reliability
… incorporates document length as a substantial weighting factor to achieve higher retrieval performance. Second, we utilize the property of survival function to propose a cost-based re-ranking method to promote ranking diversity for biomedical information retrieval, and to model the proximity …
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Optimization study of a trans-Atlantic abort for the U.S. space shuttle using a pseudospectral Legendre method
… combinations of third phase cost functional weighting factors. A cost calculation is developed to compare each optimized abort trajectory. The second study evaluates the significance of the improvements due to the chosen weighting factor combination with that of an entry aerodynamic model …
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A Study of Compressible Turbulent Free Shear Layers Using Laser Doppler Velocimetry (Supersonic Flow, Mixing, Recirculating)
… confirmed and a two-dimensional velocity inverse weighting factor was found to correct for the bias reasonably well. The problem of LDV fringe bias for two-channel coincident LDV systems in highly turbulent high speed flows was examined in detail analytically.
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Dosimetric characterization of a miniature x-ray source for biophysics studies
… According to current standards, the radiation weighting factor for all electrons irrespective of their energies is 1. However, there is some evidence suggesting that this factor for low energy electrons could be more than 1. Due to the complexities associated with handling tritium in a liquid …
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The effect of depth-velocity correlations on aquatic physical habitat usability estimates
… at a stream reach; 2) determination of weighting factors for the predicted values from preference curves constructed for each organism or group of organisms; and 31 application of a joint weighting factor (obtained by multiplying the individual weighting factors) to the surface area of …
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Image Processing Methods For Dual-Energy Contrast-Enhanced X-Ray Breast Imaging
… and tissue composition from DE images. The DE weighting factor used in image subtraction is thickness-dependent, and thus the DE signal in an image intrinsically encodes breast thickness information. Currently, CE breast imaging uses iodinated or gadolinium-based contrast agents. The adverse …
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Radon, progeny and health: investigation in different environments in Northamptonshire
… of radon transported overnight requiring a lower weighting factor for the amount delivered to above-ground-floor sleepers, and the much reduced level of intake to the respiratory system from reduced breathing rate during the sleep mode. Potentially also, from the mechanism postulated which implies …
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Monotonicity Formulas for Diffusion Operators on Manifolds and Carnot Groups, Heat Kernel Asymptotics and Wiener's Criterion on Heisenberg-type Groups
… monotonicity formula when taking into account a weighting factor depending on ω. We also give examples of manifolds satisfying <em>C</em>(ω), the most interesting of which includes the Ornstein-Uhlenbeck operator. Monotonicity of the weighted frequency also implies a form of strong-unique …
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A systems approach to assessing the sustainability of hybrid community energy systems.
… an energy system is determined by normalization, weighting, and aggregation of sustainability indicators. Indicators are normalized relative to sustainable threshold values and weighted based on time, space, and receptor (i.e., human or ecosystem impacts) criteria. Aggregation yields an ISI …
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Random Actuation Pattern Optimization by Genetic Algorithm for Ultrasonic Structural Health Monitoring of Plates
… is excited at the same time delay with a uniform weighting factor. The derived methodology accounts for enclosing all excitations within a certain aperture. The centroid of the emitting sources is also kept at the origin of the Cartesian coordinate within a slight tolerance range. For the near …
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Principal factors affecting senior management culture change for total quality metamorphosis
… the major Quality parameters and key success factors worldwide (assigned as "whats") that are necessary to bring about change in the senior Management culture towards leadership in Quality, and in addition, the factors (assigned as "hows") affecting the implementation of the key success …
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Optimization Models and Approximate Algorithms for the Aerial Refueling Scheduling and Rescheduling Problems
… were conducted with various values of objective weighting factor for extended analysis. In the job arrival case, MetaRE and BestINSERT have significantly performed better than SEPRE in terms of average relative error for small size problems. In the case of job priority disruption, there is no …
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Evaluation of a direct processing system for converting no. 3 grade red oak logs into rough dimension parts
… labor cost, overhead cost, capital investment, weighting factor for part lengths, green cutting yield and drying and remanufacturing loss were analyzed. Dimension part price, green cutting yield and drying and remanufacturing loss were found to be the most important factors that affect the …
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The development of automatic fire protection methods for computing and telecommunications areas
… There are a significant number of contributing factors that must be considered when deciding which fire suppression system to select for a new installation or whether to retrofit fire suppression on a legacy platform. Consequently, it is necessary to develop a methodology to quantify any fire …
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Acceleration of Subtractive Non-contrast-enhanced Magnetic Resonance Angiography
… performing a weighted subtraction, in which the weighting factor is obtained by a robust regression method. Image sparsity can also be increased and thereby potentially benefit CS reconstruction in the following chapters. Chapter 5 investigates the optimal k-space sampling patterns for the 3D …
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Integrated renewable energy polygeneration networks: a multi-objective optimisation and game theoretic approach
… provides valuable insights into the impact of weighting factors on cost and emissions, highlighting the model's decision-making process under varying renewable fuel availability and objective preferences. The second case study extends the model's applicability by incorporating cooperative game …
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