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 86 for “"degree-days"”.
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Implications of climate change on energy demand and growing-degree days
… most commonly used for energy demand are heating-degree days and cooling-degree days (HDD/CDD hereafter). Since the WWII era, these simple indicators have proven useful to energy utilities and military installations to anticipate heating and cooling demand. Further, a metric used to estimate …
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The Life History and Contributions to the Ecology of Camelobaetidius variabilis Wiersema 1998 (Ephemeroptera: Baetidae) in Honey Creek, Oklahoma
… reared nymphs were used to calculate number of degree days to complete development (772 degree days at 20.8° C ±.38° C), which was used to determine voltinism. Field collected nymph microhabitat distribution was used in assessing microhabitat distribution. Nymphal thermoregulation was assessed …
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Potential environmental factors associated with the newly emerging bat white-nose syndrome in the northeastern United States: an exploratory modeling approach and case-control study
… predictor variables revealed Slope, Growing-Degree Days, Annual Temperature Range, and Land-Cover as the top four predicting variables for WNS infected bat hibernacula locations. Similarly, the case-control study showed that two of these top four predictor variables (Growing-Degree Days and …
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Phenology of the European corn borer, Ostrinia nubilalis (Hubner) (Lepidoptera: Pyralidae) in Virginia
… estimated by measuring the accumulation of degree days above 10ºC. The appearance of cumulative percentages of adult European corn borer flight at predicted degree day accumulations is reported. The seasonal abundance, within - field and within - plant distribution of first generation …
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A phytomer-based simulation model for growth in competitive weed-crop systems
… on the sum of subtending internode lengths. The degree day requirement for leaf appearance was determined for a number of crop and weed species. Leaf appearance in nearly all crops and weeds required more degree days in the field than in growth cabinets.
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Application de la télédétection à l'analyse de la variabilité climatique des régions boréales et subarctiques du Canada et à la validation du modèle régional canadien du climat
… (length of the growing season, annual growing degree-days, and ecotone displacement) were selected so as to minimize problems related to instrumental drift and inter-satellite adjustment.The study of the twenty year NOAA-AVHRR satellite archives, permitted the observation of recent climate …
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Life History and Secondary Production of Caenis latipennis Banks (Ephemeroptera: Caenidae) in Honey Creek, Oklahoma
… C. latipennis eggs and nymphs take 132 and 1709 degree days to develop. C. latipennis had an extended emergence with five peaks. Females emerged, molted, mated, and oviposited in an estimated 37 minutes. Mean fecundity was 888.4 ± 291.9 eggs per individual (range 239 -1576). C. latipennis …
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New Methodologies to Generate, Conserve, and Predict, Renewable Energy Output for Season Extension of Warm and Cool Season Vegetable Crops
… soil, and tube temperature (ºC), crop growing degree - days, squash seed germination and kale height (cm) and dry biomass (g). The electrically heated water tube produced the highest mean spring day air (28.2 ºC), fall soil temperatures (14.6ºC), thermal tube temperature for the 24 - hour, day …
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Climate Variability Influences Women’s Attitudes Towards Intimate Partner Violence (IPV)
… probability model, we find prior year growing degree days (GDD), prior and current year rainfall variability have statistically significant effects. Most interestingly, we find that a one standard deviation (SD) rise in prior year annual rainfall decreases the likelihood of justifying wife …
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Entomotoxicological and Thermal Factors Affecting the Development of Forensically Important Flies
… flies. In addition different methods of degree-day calculations and development thresholds were used to determine the effects on PMI estimates. The first study determined the effects of ethanol on the development of Phormia regina in vitro. Ground pork loin was treated with a 1, 5, or 10% …
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INCORPORATING CLIMATE CHANGE PROJECTIONS INTO RISK MEASURES OF INDEX-BASED INSURANCE
… are used to estimate distributions of cooling degree days for 2041-2070, which are then used to estimate risk measures for index-based insurance products defined for cooling degree day indices. More broadly, this thesis provides a transparent illustration of climate data processing, climate …
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Quantifying How High Tunnels Create a Microclimate For Improved Crop Growth
… microclimate varied by season, with more growing degree days inside the HT than outside in the spring, fall and winter. The way farmers managed HTs using manual ventilation, shade cloth and fans was the strongest determinant of how the climate inside the HT was different from outside. HTs …
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Necrobiome Succession in Muscle Tissue as a Potential Indicator of Postmortem Interval
… relating to time, temperature, accumulated degree-days, bacterial markers for sample site location, bacterial markers for donor identification, and as a whole, potential indications of postmortem interval.</p>
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Physiological and Ecological Constraints on the Evolution of Viviparity in Sceloporine Lizards
… In Chapter two I tested the hypothesis that the degree of embryonic development attained by reptilian embryos in utero is directly related to in utero pO2. The species chosen for the study differed in their capacity to support embryonic development during egg retention and were characterized by …
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Water use of mature pecan orchards under semi-arid conditions
… adjusted according for canopy size and growing degree days (GDD) to derive orchard specific Kc (Samani et al., 2011; Sammis, 2004). The ET estimates correlated well with actual measurements at the study site in Cullinan, South Africa, but it was further hypothesized that the method of adjusting …
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The Postmortem Interval: A Systematic Study of Pig Decomposition in West Central Montana
… in the United States. The use of accumulated degree-days (ADD) to estimate the postmortem interval reveals accurate time since death estimations and consistency with previous PMI studies despite significant differences in climate and weather patterns. This project is the first of a series of …
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The Postmortem Interval: A Systematic Study of Pig Decomposition in West Central Montana
… in the United States. The use of accumulated degree-days (ADD) to estimate the postmortem interval reveals accurate time since death estimations and consistency with previous PMI studies despite significant differences in climate and weather patterns. This project is the first of a series of …
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A Comparison of Corn Yield Forecasting Models
… model is developed by adding accumulated growing degree days (GDD) and accumulated rainfall variables. The competing subjective model is developed by adding a USDA crop conditions index (CCI) variable. The models are estimated weekly between weeks 24 and 36 of the calendar year. The three models …
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A Comparison of Corn Yield Forecasting Models
… model is developed by adding accumulated growing degree days (GDD) and accumulated rainfall variables. The competing subjective model is developed by adding a USDA crop conditions index (CCI) variable. The models are estimated weekly between weeks 24 and 36 of the calendar year. The three models …
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Defining Postmortem Changes in Western Montana: The Effects of Climate and Environment on the Rate and Sequence of Decomposition Using Pig (Sus scrofa) Cadavers
… The popular method of calculating accumulated degree days (ADD) to estimate time since death was tested and found to consistently underestimate the actual day of death, indicating that without alteration, this method should not be relied on for remains that have decomposed in western Montana. …
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