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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
151

Comunidade de mamíferos terrestres em um mosaico de restauração florestal : avaliação dos descritores ambientais sobre a riqueza, a abundância e a composição das espécies / Terrestrial mammal community in a mosaic of Atlantic forest restoration : evaluating the habitat trait filters in relation to the richness, the abundance and the composition of the species

Castilho, Camila Paula de, 1982- 27 August 2018 (has links)
Orientadores: Wesley Rodrigues Silva, Natália Oliveira Leiner / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia / Made available in DSpace on 2018-08-27T03:01:04Z (GMT). No. of bitstreams: 1 Castilho_CamilaPaulade_D.pdf: 4563279 bytes, checksum: 6f49e6d8d2326c3a15fd1ae26700259c (MD5) Previous issue date: 2015 / Resumo: A ecologia da restauração tem como principal objetivo a recuperação de ambientes degradados visando à criação de ambientes autossustentáveis. Dessa maneira, diferentes são os modelos de restauração adotados, mas poucos são os trabalhos que avaliam a resposta da comunidade de fauna em relação a essas restaurações. Este estudo tem como objetivo avaliar a resposta da comunidade de mamíferos terrestres em relação aos tratamentos de restauração presentes na fazenda Intermontes (337ha), na cidade de Ribeirão Grande, SP. Foram avaliadas a riqueza, a abundância e a composição da comunidade de pequenos, médios e grandes mamíferos em um mosaico de restauração em Mata Atlântica, incluindo áreas de pasto com regeneração arbórea e ou arbustiva na qual o plantio de restauração foi implantado, áreas de pasto com plantio, área de regeneração natural e remanescentes florestais. Tendo em vista o modelo "trait-filter", procuramos evidenciar como alguns descritores ambientais influenciaram a ocorrência das espécies, considerando como filtros a estrutura da vegetação e a disponibilidade de alimentos (frutos, artrópodes e pequenos e médios mamíferos de acordo com a espécie avaliada). Tanto para a assembleia de pequenos mamíferos, quanto médios e grandes, espécies generalistas predominaram na comunidade, ocorrendo nas diferentes unidades amostrais. Espécies especialistas foram menos abundantes e mais restritas em sua ocorrência. Para pequenos mamíferos, estas espécies estiveram restritas aos remanescentes florestais ou às unidades com maior complexidade de vegetação. Para médios e grandes mamíferos, espécies especialistas estiveram presentes em diferentes tratamentos, mas foram ocasionais. O papel dos descritores ambientais sobre cada espécie diferiu de acordo com suas necessidades ecológicas, revelando a sua importância para a ocorrência das diferentes espécies. Avaliar a resposta desta comunidade em função de medidas de restauração revelou a importância dos descritores ambientais que precisam estar presentes e ser mantidos para garantir a colonização e a permanência da comunidade de mamíferos terrestres / Abstract: Restoration ecology aims to recover degraded areas creating self-sustaining ecosystems. Different restoration techniques are being implemented nowadays but few studies are evaluating the response of the fauna community in relation to those restored areas. This study intended to evaluate the response of a terrestrial mammal community in a restored area located at Intermontes farm (337ha), in the city of Ribeirão Grande, SP. We investigate richness, abundance and composition of small, medium and large mammals in a restoration mosaic of Atlantic forest, including pasture areas with arboreal or arbustive regeneration where restoration where implemented, pasture areas with restoration, areas with natural regeneration and forest remnants. Once considering the trait-filter model, we intended to elucidate how habitat filters influenced species occurrence, considering vegetation complexity and food resources (fruits, arthropods, small and medium mammals depending on the species) as filters. To the small mammals assembly, as to the medium and large ones, generalist species predominated in the community, occurring in all different sample units. Specialized species were less abundant and were restricted in their occurrence. Small mammals were limited to the forest remnants or to those sample units with more complex vegetation. Specialist medium and large mammal species were present in different sample units, but were occasional. The habitat filter role for each species differed according to the ecological necessity of the species, revealing the importance of those aspects to species occurrence. The evaluation of the response of this mammal community to restoration showed that some habitat filters need to be present and maintained in order to guarantee the colonization and the permanence of terrestrial mammals / Doutorado / Ecologia / Doutora em Ecologia
152

Royal Flying Corps training and casualties in 1916 and 1917 and related factors

Rogge, Robert E. 01 January 1978 (has links)
No description available.
153

A curriculum for private pilot airplane

Thompson, Richard D. 01 January 1990 (has links)
No description available.
154

Rozbor ekonomických a provozních požadavků na nový vlečný letoun pro AeČR / Evaluation of economical and operational requirements on new towing aeroplane for AeČR

Titz, Tomáš January 2010 (has links)
The aim of the master's thesis is to provide the analysis of the composition of towing used by flying clubs in the Czech Republic. Another part of the analysis is the comparison of home towing types with types used abroad. Another aim is to analyse legislative and operating demands on towing types used in the Czech Republic and process procedures of safety and effective towing. Based on these findings the author formulates economic and operating requirements which an ideal tow plane should meet and compare these requirements with attributes available on the market.
155

Návrh letounu v koncepci amfibie vychátející z VUT 001 Marabu / Design of amphibian aircraft based on VUT 001 Marabu

Prokop, Vít January 2012 (has links)
My master´s thesis deals with the design of amphibian hull for VUT 001 Marabu aircraft. Part of this work is aerodynamic and hydrodynamics design of hull including flight mechanics with, take of and landing on the water. The last point of work is load calculation of float and landing gear and design of landing gear retraction mechanics.
156

Létající robot pro geofyzikální účely / Flying robot for geophysical purposes

Mocek, Jurij January 2016 (has links)
The aim of this work is to propose a construction solution for remote controlled flying machine and to propose way of its management. The work deals with the general way to construct a flying machine with vertical start and concrete solution for construction.
157

Methodology For Evaluating Flying Qualities From Desktop Simulator

Lindqvist, Daniel January 2020 (has links)
A modern ghter aircraft has an advanced ight control system which highly augmentsthe control inputs from the pilot. To verify a new iteration of the control system is a timeconsuming and expensive task. It is desired to nd qualities that is not satisfactory to thepilot as early as possible in the verication process to reduce the cost for design changes.The primary objective of this thesis is to develop methods that can be used for automaticalevaluation of aircraft ying qualities from the data provided by a desktop simulator. A desktopsimulator is cheap to use compared to ight tests and tests with a pilot in a simulator.Only ghter aircraft in the precision ight phase are studied however the methods developedcould easily be extended to include other types of aircraft and other phases of ight.To evaluate the ying qualities two sets of criteria are used the MIL-F-8785C standardand the Gibson criteria. The MIL-F-8785C standard uses a second order linear system toevaluate the aircraft's ying qualities. The linear system is estimated from the nonlineardata and evaluated against the MIL-F-8785C standard. The Gibson criteria studies the timeand frequency domain directly and are designed to work with highly augmented aircraft.The set of Gibson criteria used in this thesis primary evaluates data from the time domainhowever one criterion from the frequency domain is studied.The methods developed to evaluate the ying qualities from the MIL-F-8785C standardonly works for a small part of the ight envelope furthermore they show a large dierencefor what is considered acceptable ying qualities. Because of this the methods developed forthe MIL-F-8785C standard are considered not to be suited for evaluating ying qualities forhighly augmented aircraft. The methods developed to evaluate the ying qualities againstthe Gibson criteria works for a large part of the ight and also show a high accuracy. Thismakes the methods suited for evaluation of the ying qualities.
158

Habitat Associations Between the Northern Flying Squirrel and Red Spruce

Ashley L Archer (9191999) 31 July 2020 (has links)
<p>Red spruce forests, one of the most critically endangered ecosystems in the United States</p>provides critical habitat for several endemic species or subspecies of the Appalachian Mountains, including the Virginia northern flying squirrel. Once listed as threatened under the Endangered Species Act, the Virginia northern flying squirrel was delisted in 2013. Managers are currently focusing their efforts on projects that increase the extent and connectivity of the squirrel’s habitat through red spruce restoration. At present, there is a paucity of available data to assess the implications of the silvicultural activities associated with red spruce restoration on the movement and occupancy of the Virginia northern flying squirrel. In order to inform management activities, I measured home range, fine-scale habitat use, and estimated detection and occupancy for northern flying squirrels across a gradient of red spruce stands in the Monongahela National Forest. I concluded that home ranges for northern flying squirrels within this region are comprised primarily of red spruce and that northern flying squirrels were selecting larger diameter trees compared to the nearest available neighbor. Additionally, I found that microhabitat characteristics alone did not sufficiently predict northern flying squirrel occupancy and that acoustic methods for surveying northern flying squirrels will require further refinement. Future research efforts should focus on a combination of landscape-level and microhabitat covariates to best predict occupancy of this species across the landscape. Future red spruce management should be approached with caution regarding the potential impact on northern flying squirrel habitat in the short-term. I recommended using spatially-explicit modeling to assess the long-term effects of proposed red spruce restoration projects on northern flying squirrel population demographics, dispersal, and metapopulation connectivity prior to the implementation of silvicultural treatments.
159

The educational values of Florida State University's circus

Unknown Date (has links)
"Florida State University presents an annual all-student University circus which is nationally known. This event is a five-ring affair held in the spring quarter of each year in which approximately one hundred and fifty students take an active part. The activities which make up the circus include those of the aerial, dancing, balancing, gymnastics and tumbling, skating, and clowning types. Approximately five small performances are given during the fall quarter in cities near the locality in the State of Florida each year. The Department of Physical Educaiton for Men at Florida State University offers a one-hour service course in circus activities as well as sponsoring the annual all-student University circus. The circus is a part of the physical education program. Physical education is education, and the purposes of both are the same. Therefore, the purpose of this study is to determine the educational values of Florida State University's circus. If it is found that circus activities contribute to the three major purposes of physical education--development of mental and physical fitness, development of social and ethical character, and development of skills for worthy use of leisure--such an enterprise may become a desirable addition to the total physical education program"--Introduction. / "July, 1950." / Typescript. / "Submitted to the Graduate Council of Florida State University in partial fulfillment of the requirements for the degree of Master of Science under Plan II." / Advisor: Kenneth D. Miller, Professor Directing Paper. / Includes bibliographical references (leaves 32-33).
160

Effects of a Bell-Shaped Lift Distribution on an Oblique Flying Wing and its Impact on Aerodynamic Performance

Deslich, Joshua 22 June 2020 (has links)
No description available.

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