Global ETD Search
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Showing 1 to 13 of 13 for “"Disturbance index"”.
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An Application and Refinement of the Karst Disturbance Index through Evaluating Variability in Island Karst Disturbance in Puerto Rico
… and also to groundwater supplies. The Karst Disturbance Index (KDI) is a holistic tool used to measure anthropogenic impacts associated with karst environments, which has been applied and refined through studies performed in Florida and Italy, yet still remains untested and susceptible to …
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Wirkung und dentale Nebenwirkungen unter der Langzeitanwendung des IST-Gerätes bei Patienten mit obstruktiver Schlafapnoe
… werden. Unerwartet wurde der Respiratory Disturbance Index von der ersten mit 11,1 ± 11,8 /h zur zweiten schlafmedizinischen Kontrollmessung mit einem Durchschnittswert von 4,6 ± 5,8 /h nochmals signifikant erniedrigt. Minimale Sauerstoffsättigung und der Entsättigungsindex wiesen im …
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Development Of An Avian Index Of Biological Integrity For Kentucky Wetlands
… in wetland habitats. I developed an avian index of biological integrity (IBI) for wetlands of Kentucky as an intensive assessment method to supplement an existing rapid assessment method used in regulatory programs. Birds are useful indicators because they are sensitive to environmental …
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COMMUNITY IMPACTS TO AND FROM GLACIOLOGY: ANALYZING THE EFFECTS OF CLIMATE CHANGE ON HIMALAYAN MOUNTAIN COMMUNITIES WHILE BUILDING THE NEXT GENERATION OF GEOSCIENTISTS
… in Chapters 2-4. Chapter 2 presents a Glacier Index that provides a seasonal measure of the relative importance of glaciers to hydrologic basins in High Mountain Asia and how that importance will change over time. The results of this study demonstrate the need to place environmental changes …
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Control by Vegetation Disturbance on Gully Rejuvenation Following Wildfire
… fire severity and GR: The capacity of vegetation disturbance to explain the occurrence or non-occurrence of GR; the spatial structure of burn mosaics relative to post-fire erosion; and the relationship between fire severity and threshold conditions required for channel initiation. I surveyed 269 …
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Control by Vegetation Disturbance on Gully Rejuvenation Following Wildfire
… fire severity and GR: The capacity of vegetation disturbance to explain the occurrence or non-occurrence of GR; the spatial structure of burn mosaics relative to post-fire erosion; and the relationship between fire severity and threshold conditions required for channel initiation. I surveyed 269 …
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The natural history of sleep disordered breathing in 6-11 year old Caucasian and Hispanic children
… documented the relationships between respiratory disturbance indices based on polysomnography and parental report of clinical symptoms of SDB in children ages 6-11. There are threshold values of respiratory disturbance index (RDI) associated with an increase in the prevalence of clinical symptoms …
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Development and assessment of remotely derived variables in current southern pine beetle (Dendroctonus frontalis Zimm.) hazard mapping in North Carolina, USA
… Thematic Mapper (TM) imagery chronosequences of disturbance index (DI) â transformed scenes to identify stand-replacing disturbances, resulting in a kappa statistic of 0.6364 for the younger than 22 year age class and 0.7778 for the older than 22 years age class. A kappa value of 1 is ideal. The …
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A Vegetation-Based Index of Biotic Integrity for Wetlands of Kentucky
… metrics and tested their correlation to a disturbance index, which was comprised of aggregated measures of anthropogenic landscape, physical, and hydrological alterations. Forested, emergent, and shrub wetlands were included in the survey sample. Ultimately, one VIBI was developed for all …
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Aerobic Exercise Training and Nasal CPAP Therapy: Adaptations in Cardiovascular Function in Patients with Obstructive Sleep Apnea
… heart rate (HR), blood pressure (BP), cardiac index (CI), stroke volume index (SVI), total peripheral resistance (TPR), and oxygen uptake (VO2) were assessed in this study. A second objective was to explore differences in hemodynamic function at rest and during graded exercise in OSA patients …
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Vegetation-Based Metrics Of Biotic Integrity For Assessing The Ecological Condition Of Wetlands Of Kentucky
… world has significantly declined due to human disturbances. It has been estimated that Kentucky has lost over 80% of its wetland area. In response to these losses occurring across the United States, the Clean Water Act was passed to halt this dramatic decline and to restore the ecological …
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Identifying Ionospheric Scintillation in the South Atlantic Magnetic Anomaly using motion-affected GPS data from a ship-based receiver
… was less than 100 km. The Symmetric-Horizontal disturbance index (SYM-H) was used to identify geomagnetic storm conditions. GPS visibility maps were used to identify any potential signal obstructions. No correlation could be seen between position error and the number of satellites locked due to …
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Mapping and monitoring forest cover changes in Lao PDR using remote sensing
… temperature (LST) and enhanced vegetation index (EVI) 16-day time series of MODIS over the seven-year period from 2006 to 2012 were calculated and their monthly transitions compared for forests, and for land covers that commonly replace forests. The findings showed the complex …