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 102 for “"long-term data"”.
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Research Data Management Practices And Impacts on Long-term Data Sustainability: An Institutional Exploration
<p>With the 'data deluge' leading to an institutionalized research environment for data management, U.S. academic faculty have increasingly faced pressure to deposit research data into open online data repositories, which, in turn, is engendering a new set of practices to adapt formal mandates to …
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Using long-term data to investigate temporal changes in non-native crayfish populations of northern Wisconsin lakes
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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An Analysis of the Effects of Temperature and Other Environmental Factors on Microorganismal Productivity within Aquatic Ecosystems using Long-Term Data from Various Lter and Ilter Sites
… oxygen as predictors in regression models with data from the LTER and iLTER network of sites that ranged from the poles to the equator. I found a positive relationship between temperature and productivity. Antarctica and Arctic sites exhibited the strongest positive relationships supporting …
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Life and death in a corn desert oasis: reproduction, mortality, genetic diversity, and viability of Illinois' last Eastern Massasauga population
… of which may be underestimated due to lack of long-term data for most species. Snakes, especially venomous species, are particularly vulnerable because of their life-history characteristics and often specialized habitat requirements. Unfortunately, snakes are also under-studied due in part to a …
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The Art of SRAM Security: Tactics for Remanence-based Attack and Strategies for Defense
… distributed denial-of-service attacks to data theft through monitoring a device's low-level behavior, such as power consumption. Traditional software-based security measures fall short in defending against the full spectrum of attacks, particularly those involving physical tampering with …
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Over-Winter Mortality Of Gizzard Shad (Dorosoma Cepedianum) In Oneida Lake, New York
… ecosystems. Oneida Lake has been the focus of a long-term data set across several trophic levels and provides the ideal location to study over-winter mortality in fishes. In Chapter 1, I provide a review of current methods used throughout the literature to address questions involving over-winter …
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Assessing the utility of open-source data in exploring benthic biodiversity in mining concessions off the South African coast
… of biodiversity (Majiedt et al. 2019). Data that are openly available, from repositories, guides and within other studies, are a growing resource available to researchers, with the benefits including accessibility, cost effectiveness, and access to long-term data. Data were sourced from …
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Large and small-scale movement patterns of the West Coast rock lobster, Jasus lalandii
… of techniques. These were (1) an examination of long-term data from an ongoing tag-recapture program, (2) observations on rock lobsters in a mesocosm aquarium, (3) surveys that monitored the seasonal fluxes in activities and abundance of rock lobsters in the field, (4) video recordings of …
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Refined Evaluation of Effective Prestress in the Varina-Enon Bridge
… effective prestress. This was done using field data from a long-term data collection system in the bridge as well as a finite element model which includes a staged-construction analysis. Creep and shrinkage are accounted for using the CEB-FIP '90 model code. Effective prestress in the …
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Allergenic pollen concentrations in the United Kingdom
… of North London site. Retrospective pollen data of up to 30 years in length at London, Cardiff and Derby has been incorporated into the database, along with between 2 and 7 years of retrospective data from 7 other European Aeroallergen Network(UK) sites. Annual grass and birch pollen …
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Status of the Ozark Hellbender (Cryptobranchus Alleganiensis Bishopi): a Long-Term Assessment
… fluctuations in population numbers and lack of long-term data. I censused populations of the long-lived Ozark hellbender, Cryptobranchus alleganiensis bishopi, in three rivers in Missouri, and compared the 1998 data to data from previous studies from the 1970's and 1980's. Ozark hellbenders …
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Measuring changes in areal extent of historic wetlands at Great Sand Dunes National Monument, Colorado 1936-1995
… 20% of the area in 1936 to 47% by 1995. Climatic data were collected to analyze possible causes of the changes to the wetlands but the study was limited by the lack of long-term data. Weather data is consistently available since 1948. Well data is of short term and sporadic nature. Two sources of …
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Long-term creep modeling of wood using time temperature superposition principle
Long-term creep and recovery models (master curves) were developed from short-term data using the time temperature superposition principle (TTSP) for kiln-dried southern pine loaded in compression parallel-to-grain and exposed to constant environmental conditions (~70°F, ~9%EMC). Short-term …
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West Nile Virus Seroreversion and the Influence of Herd Immunity on Disease Risk in a Long-term Study of Free-ranging Birds
… hosts. The quantity of susceptible hosts is determined by 1) recruitment of juvenile birds during the breeding season, 2) adult birds previously unexposed to WNV, and 3) adult birds with waning antibody titers. Although rarely tested, avian herd immunity and seroreversion could have a direct …
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Realised volatility estimators
… RV estimator in a historical study of S&P 500 data? (2) What is the best RV estimator in a Monte Carlo simulation when delta hedging synthetic options? (3) Do our findings support the stylized fact of `Asymmetry in time scales' (Cont, 2001)? In the answering of these questions, further avenues …
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Širdies resinchronizuojamojo gydymo efektyvumo įvertinimas ir prognozavimas /
Chronic heart failure (HF) is the main cause determining increasing morbidity and mortality of the patients suffering from cardiovascular diseases related to sudden death or progressive heart insufficiency. Cardiac resynchronization therapy (CRT) is a progressive, modern and very promising method …
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Cardiac resynchronisation therapy: evaluation and prediction of effectiveness /
Chronic heart failure (HF) is the main cause determining increasing morbidity and mortality of the patients suffering from cardiovascular diseases related to sudden death or progressive heart insufficiency. Cardiac resynchronization therapy (CRT) is a progressive, modern and very promising method …
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Bats and the city : urban bat biodiversity in a tropical biome transition zone
… guidelines for urban planning. This study uses a long-term data set (>10 years) of species occurrence records, collected as part of a public health monitoring scheme within the city of Belo Horizonte, Brazil to quantify the taxonomic, functional, and phylogenetic diversity of bats in the city for …
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Rehabilitation of Severely Compacted Urban Soil to Improve Tree Establishment and Growth
… to influence early growth treatment effects. Long-term data is needed to fully understand effects of soil rehabilitation.
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Improved dynamics modelling for drainage sediment prediction and management
… and hydraulic models.<br/><br/>A programme of data collection was devised to develop and test the techniques of this investigation, focussing on sediment processes in sewer pipes and sediment traps. The data collected included, suspended and near bed transport rates, long-term sediment bed …
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