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 30 for “"radio-tracking"”.
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Applications of plasma density measurements to spacecraft radio tracking
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1980.
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Extracting scientific information from interplanetary spacecraft radio tracking data.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1971
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Study of the Martian upper atmosphere using radio tracking data
… and accelerometer investigations by using radio tracking data that have not been studied from an atmospheric science perspective, or are available for the first time. Due to the very low density of the higher layers atmosphere, the estimation of the drag acceleration using Precision Orbit …
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Movements and Behavior of Pheasants During the Breeding Cycle as Determined by Radio-Tracking
… 1966. Objectives of the study were to evaluate radio telemetry techniques, determine the territorial area and home range of the hen and cock, study the behavior pattern of hen and cock in the harem makeup, determine the distance traveled by the hen when attracted to the harem, determine if the …
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The wired wilderness : electronic surveillance and environmental values in wildlife biology
… One of the most important of these was wildlife radio-tracking, in which collars and tags containing miniature transmitters were used to locate individual animals in the field. In addition to producing new ecological insights, radio-tracking served as a site where relationships among scientists, …
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Sea trout (Salmo trutta L.) : studies of the River Twyi, South Wales
… coracle and recreational rod fisheries. Radio tracking of adults during the spawning season investigated behavioural activities and their possible effects on stock characteristics. Catch effort data from angler log books assessed the annual performance of the rod fishery between 1990 and …
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A concept for wildlife tracking using ultra high frequency (UHF) radio
Wildlife tracking technology is a method routinely used in the detection of small animals or big animals. Normally, a radio tracking using a low frequency between 30MHz to 300MHz known as Very High Frequency (VHF). In this study, a band of Ultra High Frequency (UHF) with a frequency 315MHz is used …
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Population, Home Range, and Dispersal of Red Foxes in East-Central South Dakota
… direction of travel. Results from successfully radio-tracking 1 adult fox during summer, 1974, and 4 adult foxes during summer, 1975, revealed that foxes used home ranges averaging approximately 648 ha in size. The smallest home range (236 ha) was used by a 1 ½ year old barren female and the …
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Dialects, Sex-specificity, and Individual Recognition in the Vocal Repertoire of the Puerto Rican Parrot (Amazona vittata)
… vittata), including marking, capturing, and radio-tracking. The portion of the study reported here documents the vocal behavior of A. vittata during the reproductive season and examines the possibility of using vocalizations to identify individuals, determine the sex of individuals and …
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Movements and Habitat Use By Hen Pheasants During Brood Rearing
… brood rearing in Nebraska. The development of radio-tracking systems (LeMunyan at al. 1959, Marshall 1960, and Cochran and Lord 1963) has enabled wildlife biologists to obtain detailed information in activities and movements of many species. Trautman and Dahlgren (1965) indicated that …
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Conservation of barbel (Barbus barbus) in the River Great Ouse
… seasonal movements of 20 wild barbel via radio telemetry in a nine kilometre river stretch on the upper Great Ouse, recording weekly movements over an 18 month period. The project aimed to ascertain the effects of environmental influences on movement and habitat use. Radio tracking over …
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Precise orbit determination of the Mars Odyssey spacecraft and geodetic inversion for the Martian gravity field
… of these techniques consists of the study of the radio signals emitted by a spacecraft, from which it is possible to derive the forces acted upon it. For this project, we used the radio science data from the Mars-orbiting spacecraft "IMars Odyssey". Launched in April 2001, more than two years of …
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Revealing the behavioural ecology of the elusive hairy-eared dwarf lemur (Allocebus trichotis)
… a small nocturnal strepsirrhine primate, using radio-tracking during a one year study. Our aim was to clarify the behavioural ecology of the species and in particular to determine habitat use, social organisation and seasonal activity cycle. We conducted field work between January and December …
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Ecology of the Endangered Sandy Cay Rock Iguana, Cyclura rileyi cristata, in the Bahamas
… </em>populations. Home range estimates based on radio-tracking of iguanas showed highly variable home range sizes that, in males, may exceed those of other <em>C. rileyi </em>populations. Remarkably few social interactions were observed, which was probably a consequence of low population density. …
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Social organisation, ecology and conservation of loris tardigradus tardigradus (lorisformes; primates)
… between October 2004 to August 2005 and the radio-tracking study from August 2005 to July 2006. Seventeen lorises were radio-tracked for 339 nights, and observed for 579hrs. Average home range size was 3.2ha ± 1.7, and core area size 2.2ha ± 1.1 with no significant inter- or intra-sexual …
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Detecting exploitable stages in the life history of koi carp (Cyprinus carpio) in New Zealand
… groups of ten adult koi carp. In one treatment, radio transmitters were anchored to the pelvic girdle, and in a second treatment, a polymer coating was applied to acoustic transmitters to reduce tissue irritation. After 365 days, expulsion rates for uncoated acoustic transmitters were 60% (n = …
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The landscape ecology of brown hares and European rabbits in pastures in the north east of England
… even at relatively moderate levels of hunting. Radio-tracking indicated that habitat heterogeneity was important for hares at both between and within field levels. Hares preferentially used field margins during both active and inactive periods and selected woodland edges and unimproved grassland …
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Habitat use and responses to odours by rodents in New Zealand
… were larger and apparently more productive. Radio-tracking of both species showed that kiore used smaller home ranges and denser habitats than Norway rats, and provided weak evidence that the two species avoided each other when sympatric. In 1996, rats were removed from Kapiti Island by …
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Small Mammal Survey of Wind Cave National Park
… alliances. Four female flying squirrels were radiocollared. Radio tracking activities resulted in 12 to 28 telemetry locations per individual ( x=20.5). Mean home range size of adult female squirrels was 4.63 ± 0.68 (SE) ha using 95% MCP and 13.35 ± 3.6 ha using 95% ADK procedures. The 50% MCP …
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The Social System of the Round-Eared Sengi(Macroscelides proboscideus)
… breeding seasons and one non-breeding season by radio-tracking and trapping over a period of 2.5 years. Additionally, extra-pair attempts of paired round-eared sengi males were studied under laboratory conditions using direct behavioural observations and morphological and physiological …
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