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 19 of 19 for “"yield estimates"”.
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Reservoir yield estimates with consideration of uncertainty in used data in Illinois
Reservoir yield estimates are necessary and required for better water supply to communities especially during a severe drought. This study provides a framework to estimate reservoir yields with consideration of associated uncertainties in used data. Errors exist in inflow, reservoir capacity, …
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Development of dimension lumber grade and yield estimates for yellow-poplar sawlogs and trees
… lumber species is to be realized, lumber yields and residue volumes for various grade and size classes of yellow-poplar trees must be available in order to allow land managers to assess the value of standing yellow-poplar timber, develop sound management objectives for the species, and …
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Modeling increased height, diameter, and specific gravity effects on yield estimates in planted loblolly pine stands
… managers to have a means for estimating the yield of forest stands after increased growth occurs. Several models were tested to determine which could best predict dry weight yield after certain constant growth increases were assumed. The data used consisted of 189, one-tenth acre sample plots …
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Automatic Tuning Algorithms and Statistical Circuit Design
… the emphasis is on Monte Carlo techniques for yield estimation and yield maximization. Several techniques for achieving variance reduction in the yield estimates are discussed. A quadratic approximation model is set up for the circuit and is used to provide an extrapolated yield approximation …
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A comparison of yield estimation techniques for old-field loblolly pine plantations
… requires accurate estimation of stand yield at rotation. Methods of estimating yield from stand variables, existing number of trees per acre, height of the dominant and co-dominant stand, and stand age, are presented. These methods include a multiple regression model for estimating …
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Parametric Yield and Tolerance Optimisation of Electromagnetic Devices using Feature-based Non-Linear Partial Least Squares Polynomial Chaos Expansion Surrogates
… dissertation presents research work on efficient yield and tolerance optimisation of microwave components. In the first part of this thesis, we propose a rapid yield and sensitivity analysis approach exploiting feature based non-linear partial least squares polynomial chaos expansion (NLPLS-PCE). …
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Assessing Drought Flows For Yield Estimation
Determining safe yield of an existing water supply is a basic aspect of water supply planning. Where water is withdrawn from a river directly without any storage, the withdrawal is constrained by the worst drought flow in the river. There is no flexibility for operational adjustments other than …
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Economic Origins of the Cold War? An Examination of the Carryover Costs of World War Ii to the Soviet People
… participants. Calculations by various methods yield estimates of the replacement cost of total material war losses ranging from 5 to nearly 13 years' earnings of the 1945 labor force; a range which appears consistent with the Soviet claim that the war cost "two Five-Year Plans." Not all of …
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PALEOCLIMATE DURING DEPOSITION OF THE GREATER TWILIGHT PARK CONGLOMERATE, UPPER DEVONIAN, SOUTHEAST NEW YORK
… produce average mean annual precipitation (MAP) estimates of 873 ± 209 mm to 1147 ± 108 mm. Whereas the same proxies on Givetian-age paleosols yield estimates between1071 ± 209 mm, and 1382 ± 108 mm. Sparing the absence of a drastic increase in precipitation during the Givetian-Frasnian …
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Towards Autonomous Cotton Yield Monitoring
… of interest in remote sensing to date is yield variability. Proper understanding of yield variability provides insight on the geo-positional dependences of field yields and insight on zone management strategies. Estimating cotton yield and observing cotton yield variability has proven to …
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Medical Isotope Production of Actinium 225 By Linear Accelerator Photon Irradiation of Radium 226
… produce Ac-225 using a LINAC; however, very low yields resulted which questioned the feasibility of this production method. This research proposes a number of LINAC and radium sample modifications that could be greatly increase yield amounts for practical use. Additionally, photo-neutron …
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Genetic Variability of Growth and Development in Response to Nitrogen in Two Soft Winter Wheat Populations
… concept of effective use of nitrogen (EUN) as yield per unit N applied as a measure of N use, is also introduced. Chapter II is a study using two bi-parental double haploid families to evaluate genetic variability of both the genetic main effects (intercept) and linear response to N (slope) and …
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Quantifying the impact of remotely sensed photosynthetically active radiation retrievals on empirical crop models in the United States
… on the other hand, enable spatially explicit estimates of PAR on a regular basis. Current methods and models for satellite-based PAR retrievals require many ancillary atmospheric datasets as well as a large computing infrastructure. PAR, as one of the parameters influencing plant productivity, …
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Evaluating agricultural pesticide use and risk for the Chesapeake Bay
… which chemicals are used; where they are used; estimates of aggregate chemical use for counties and crops; and an evaluation of the potential adverse environmental effects of that use. This information is provided for both current (1990) and future (2000) pesticide risk. An econometric model of …
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Garnetites of the Cardigan Pluton - Evidence for Restite and Implications for Source Rock Compositions.
… silicate-quartz-plagioclase (GASP) barometry yield estimates between 662-714ºC and 3.8 kbars. These low calculated temperatures are most likely the result of biotite compositions which have been altered by retrograde exchange reactions. The dominant source rock for the Cardigan magmas was …
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Speciation and phytotoxicity of mono- and polynuclear aluminum in dilute hydroxy-aluminum solutions
… were evaluated and compared for their ability to yield estimates of the mononuclear fraction, ƒ<sub>m</sub>, in Al solutions of varying basicity. Reactions of ferron or aluminon with Al were kinetically modeled as two parallel irreversible reactions, while 8-hydroxyquinoline required use of an …
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NUMERICAL ANALYSIS OF GAS FLOW WITHIN A MUNICIPAL SOLID WASTE LANDFILL
… intended to evaluate the error introduced into estimates of the intrinsic permeability of waste from LFG pumping tests if the ongoing gas generation within the landfilled MSW is ignored when the pumping tests are evaluated to yield estimates of the permeability. The City of Saskatoon’s Spadina …
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Dynamic catch-effort models for the southern African hake populations
… 1t1odel for the evaluation of sustai't"1able yields is discussed. It is show·f'"s that the steady-state assumptior1 will pretbably lead to positively biased sustainable yield estimates for fisheries whose history is dotr1ir1ated by a dec:·lir:ir1g CPUE t rer1d. !r1 Em attempt to c:·orrect for …
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A tripartite study on Bayesian estimation of photosynthetically active radiation, impacts of future climate, and adaptation strategies on crop production: a spatial model framework for the Eastern Kansas River Basin
… framework to improve estimation of PAR for crop yield prediction in EKSRB. A county-level CERES-Maize crop model was calibrated and validated in the EKSRB to study the impacts of late century (2071-2100) future climate scenarios under the SSP245 emission pathway using the CMIP6 climate models. A …