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1
Ndilila, Wesu. "Investigating metal exposure on the general populace of the copper mining town of Kitwe, Zambia". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2009. https://ro.ecu.edu.au/theses/1844.
Texto completo da fonteResumo:
Zambia’s economy is highly dependent on the copper mining industry for foreign export. It is well established that copper mining contributes to significant elevated metals in the environment, hence increasing the risk of metals exposure to human populations living in and around mining areas.
Recent research has focused on the environmental impact of copper mining byproducts such as lead, cadmium, copper, cobalt and arsenic, found at elevated concentrations in the Copperbelt region of Zambia. Although the environmental metal concentrations are well known, the human health risks of exposure have not been fully addressed. Few studies have addressed metal exposure in communities adjoining mining activities in Zambia. The health impacts of increased metals exposure include: immune disturbance, gastrointestinal effects, various diseases such as: cancer, cardiovascular disease, neurological disease and decreased fertility in women. This study has investigated the relationship between environmental concentrations of metals and non-occupational human exposure and the most significant contributors to human exposure.
A cross sectional human exposure study of 45 copper-mining town residents in Kitwe (exposed) and 48 non-mining town residents in Livingstone (unexposed) of similar socioeconomic and demographic characteristics aged between 20 and 30 years was undertaken to quantify metals exposure levels of Kitwe residents. This age group is most vulnerable to HIV/AIDS and is therefore at an increased risk of adverse health impacts from elevated metal concentrations. Metal concentrations were determined for arsenic, cadmium, cobalt, copper, lead, nickel, selenium and zinc in environmental (drinking water, indoor dust and soil) and biological (toenail) samples provided by participants. A questionnaire was also administered to establish potential factors influencing exposure including environment, behaviour and lifestyle factors.
The results from this study suggest that residents in Kitwe are at an increased risk of metals exposure and consequently are also at an increased risk of being impacted by the adverse health effects associated with exposure. This study found elevated environmental and personal exposure concentrations shown to be comparable with, and in some cases higher, than other heavily industrialized regions. Metal concentrations were generally higher in Kitwe. Lead and arsenic in drinking water were most concerning having concentrations above acceptable health standards. Arsenic, copper and lead were elevated in soils. Copper and lead in dust were also high relative to other studies. The personal exposure concentrations (in toenails) most concerning were: cadmium, lead, copper and cobalt whose concentrations were either comparable or higher than studies reporting adverse health effects. Demographic and lifestyle characteristics did not show to be important contributors to exposure. This study found environmental metal concentrations to be the most important contributors to human exposure concentrations.
The project has provided current information on personal exposure concentrations resulting from non occupational exposure to copper mining, as well as establishing background environmental and exposure concentrations which can be used as a reference for future studies. It is hoped that these findings will prompt further research into metals exposure and the associated health risks in order to provide a safer environment for Kitwe residents.
2
Mutale, Emmanuel. "The urban development of Nkana-Kitwe, Zambia : structural conflict in the management of land and services". Thesis, University of East London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310610.
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3
Strömberg, Karin, e Gita Westerlund. "Level of self-esteem, social network and experience of school education among girls - a questionnaire survey in Kitwe, Zambia". Thesis, Kristianstad University College, Department of Teacher Education, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-3323.
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Health should be seen as a resource in daily life so people can feel satisfaction and social support network has been shown to have a significant impact on health. Another important determinant on health is education. There is a strong interrelationship between health and education. The centre of work in health education and promotion is the development of self-esteem. The aim of the study was to investigate the level of self-esteem, social network and experience of school education among girl’s 13-16 years, in Kitwe Zambia, in order to increase knowledge about how to learn to strengthen self-esteem and empowerment in girls. This investigation is a cross-sectional survey and we have chosen to use a quantitative method such as questionnaires. Our study received the approval of the University of Kristianstad Ethics Committee. The result shows that the girls think that the school is important for their future and that they enjoy going to school. But 34% of the girls felt that the school did not treat everybody the same and 50% of the girls were not involved at all in any student club. The results in our study showed that there were no statistical connections between level of self-esteem, social network and experience of school education. Our conclusion is that it did not matter what level of self-esteem the girls had, they had a good social network and a positive attitude towards school. A high level of self-esteem increases the young girls believes in themselves and that they can feel capable of taking a bigger part in the society. We hope that this study will underline the importance of women’s education, empowerment and self-esteem for their development. We believe that this may not change the world, but it is one good step in the development of a country.
4
Shitima, Mwepya Ephraim. "Forest Conservation and People’s Livelihoods: Explaining Encroachment on Zambia’s Protected Forest Landscapes - The Case Of Mwekera National Forest, Kitwe, Copperbelt". Thesis, Norwegian University of Science and Technology, Faculty of Social Sciences and Technology Management, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-571.
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Forest Conservation and People’s Livelihoods: Explaining Encroachment on Zambia’s Protected Forest Landscapes - The Case Of Mwekera National Forest, Kitwe, Copperbelt
Abstract
The conflicts between conservation objectives and the livelihood needs of local communities are intricate and difficult to resolve and yet the success of any conservation effort hinges on their solution. This is particularly true in forest conservation in Third World countries like Zambia, where rural populations depend directly on forest resources, which are in many cases protected.
Forest reserves in Zambia have undergone drastic changes over the years due to encroachment by such human activities as agriculture, charcoal burning and even settlements. This has led to the deforestation of most of them including Mwekera National Forest in Kitwe on the Copperbelt province. The Forest Department has attempted to involve the people in the management of these resources in a bid to redress the trend. But the fundamental causes for the encroachment and deforestation are not clear. This study was focused on unearthing the underlying causes of encroachment and the subsequent deforestation of Mwekera National Forest. This was done through a qualitative ethnographic approach employing individual interviews, focused group discussions, observations and pictures of relevant phenomena. The target groups included the forest communities living in and around Mwekera National Forest as well as government forestry officials at both local and national levels. The study was based on nature-culture theory, knowledge systems theory as well as the participatory approach.
The study reveals that macro-economic policies such as privatisation of the mines has undermined people’s livelihoods while the inefficient and bureaucratic land delivery system made “vacant” protected forest land an attractive option. The policy contradictions between the forest sector and other sectors such as energy, agriculture and land have not helped matters. Organisational constraints on the Forest Department such as its inadequate human, financial and other resources coupled with the delay in its transformation to a more autonomous Forest Commission have not secured protected forests. Its old centralist management approach has made participation by local people difficult to effect despite being provided for under new forestry policy and law. This has meant that decisions made by officials lack meaningful involvement and support of the local people, thereby seriously hindering effective forest protection. Herein lies one major cause of encroachment.
5
Evans, Alice. "Women can do what men can do : the causes and consequences of growing flexibility in gender divisions of labour in Kitwe, Zambia". Thesis, London School of Economics and Political Science (University of London), 2013. http://etheses.lse.ac.uk/752/.
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This thesis explores the causes and consequences of growing flexibility in gender divisions of labour in Kitwe, Zambia. It examines the relationship between four contemporary trends (1990-2011): worsening economic security, growing flexibility in gender divisions of labour in the form of increasing female labour force participation and occupational desegregation, and the weakening of gender stereotypes. The evidence for these trends comes from census data, earlier ethnographies and my own qualitative research (April 2010 − March 2011). The analysis draws upon a theoretical framework that interprets sex-differentiated practices as resulting from internalised gender stereotypes, cultural expectations and patterns of resource access. The substantive chapters of the thesis consider alternative hypotheses. Did worsening economic security trigger flexibility in gender divisions of labour, which then weakened gender stereotypes (Chapter 4)? Alternatively, was such flexibility actually contingent upon a prior rejection of gender stereotypes, due to particular formative experiences (Chapter 5) or gender sensitisation (Chapter 6)? This thesis argues that worsening economic security led many families to sacrifice the social gains accrued by complying with cultural expectations of gender divisions of labour in exchange for the financial benefits of female labour force participation. But occupational desegregation is partly attributed to a prior rejection of gender stereotypes. Flexibility in gender divisions of labour seems to undermine gender stereotypes and related status inequalities, by enabling exposure to a critical mass of women performing roles that they were previously presumed to be incapable and that are valorised because they were historically performed by men. Common forms of gender sensitisation in Zambia were rarely said to be independently persuasive; impact generally appears contingent upon exposure to a critical mass of women in socially valued domains. Sensitisation also seems more effective when it enables participants to see that others also endorse gender equality. This can increase confidence in the objective validity of one’s own egalitarian beliefs and also shift cultural expectations.
6
Brinkmann, Felix [Verfasser], e Dieter [Akademischer Betreuer] Neubert. "Kleinhandel unter schwierigen institutionellen Voraussetzungen – Reaktionen, Strategien und Lösungen der Händler auf dem Chisokone-Markt in Kitwe/Sambia / Felix Brinkmann. Betreuer: Dieter Neubert". Bayreuth : Universität Bayreuth, 2015. http://d-nb.info/107634822X/34.
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7
Lumbwe, Kapambwe. "Ubwinga, a subset of Bemba indigenous knowledge systems : a comparative study of pre-colonial and post-independence wedding ceremonies in Lusaka and Kitwe, Zambia". Doctoral thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/12141.
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Includes abstract.Includes bibliographical references (p. 258-284).
This study has, by way of ethnographic investigation, compared the Bemba ubwinga ceremonies performed in Lusaka and the Copperbelt during the pre-colonial era and the white wedding ceremonies performed during the post-independence era. It has further investigated the nature and existence of Bemba IKS. This study employed qualitative research methods involving extensive fieldwork in Lusaka and the Copperbelt. Apart from audio-visual recordings and analysing 25 marriage ceremonies, individual and focus group interviews were conducted with participants of wedding ceremonies and a sample of research participants from various age groups. Participant observation was used to collect data, while the interviews served as a means to clarify information about ubwinga ceremonies.
8
Dawson, Ross Hughan. "Kite Turning". Thesis, University of Canterbury. Mechanical Engineering, 2011. http://hdl.handle.net/10092/5475.
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This thesis investigates the mechanisms behind the control of a typical two line kite, where the lines are attached to the kite side by side. This arrangement gives the kite flyer the ability to apply a roll angle to the kite, which then results in a yawing motion. The reason for this yaw rotation has not been adequately described previously.
The definitions of roll and yaw for a kite have been re-defined to match the real world behaviour of the kite-bridle-line system. Specifically, these are defined as rotations relative to the lines rather than the kite itself. This detail has been neglected in previous research, and has a significant effect on the turning behaviour of a kite.
A static model of a kite represented by flat disks was created. This model allows the out of balance forces and moments to be found for a kite when it is held at any position. When the kite is held with a roll angle applied, the disk angles of attack become unequal. This causes a change in the magnitude, direction, and point of action of the aerodynamic forces on each disk, which can lead to a yaw moment. While this does not give a complete picture of how a kite turns, it does explain one of the two mechanisms that cause a kite to begin to yaw when a roll angle is applied. The other mechanism is due to the velocity of the roll rotation, and is out of the scope of this thesis since a dynamic analysis would be required.
The static model showed that any variation to kite geometry or any parameter that affects the equilibrium position of the kite will affect turning response. The most important of these parameters for a simple kite represented by two disks is the dihedral angle. A minimum negative dihedral angle (or anhedral) is required for a kite to turn in the expected direction when a roll angle is applied. The value of the minimum anhedral angle required for this behaviour varies with other parameters, but is generally between 8° and 20°.
Other parameters such as bridle geometry also affect the turning response of a kite, primarily because they alter the equilibrium positions of the kite and line. Altering these equilibrium positions has a strong effect on turning response, since it changes the initial disk angles of attack. Additionally, if the kite and line are not aligned perpendicular to each other (which is a rare condition for a kite) a roll angle further changes the disk angles of attack, since the roll angle is applied about an axis relative to the line rather than the kite.
An investigation into the effect of varying wind velocity on turning response showed that it has an important effect. Some kites will reverse their response to a given roll angle at some wind velocities, which could make the kite very difficult to control. Additionally, some kites can alter their equilibrium positions sharply with wind velocity, again causing varying turning behaviour as the wind conditions change.
Future work should examine the dynamic turning response of kites. A dynamic simulation could be used to examine how the turning response of a kite is influenced by the rate at which a control input is applied. Additionally, the behaviour of the kite once the initial turning movement has begun could be assessed.
9
Hobbs, Stephen. "A Quantitative study of kite performance in natural wind with application to kite anemometry". Thesis, Cranfield University, 1986. http://hdl.handle.net/1826/918.
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Although kites have been around for hundreds of years and put to many uses, there
has so far been no systematic study of their performance. This research attempts
to fill this need, and considers particularly the performance of kite anemometers.
An instrumented kite tether was designed and built to study kite performance.
It measures line tension, inclination and azimuth at the ground, :sampling each
variable at 5 or 10 Hz. The results are transmitted as a digital code and stored
by microcomputer. Accurate anemometers are used simultaneously to measure the
wind local to the kite, and the results are stored parallel with the tether data.
As a necessary background to the experiments and analysis, existing kite information
is collated, and simple models of the kite system are presented, along with a more
detailed study of the kiteline and its influence on the kite system.
A representative selection of single line kites has been flown from the tether in a
variety of wind conditions. The results from these experiments are analysed to
obtain general performance measurements for these kites in real, turbulent, winds.
The analysis is taken a stage further to evaluate the kites for anemometry, and to
study the dynamics of the kite system. The most suitable kites for anemometry are
identified, together with the wind conditions in which they may be used and the
wind information available from measurements at the tether.
The study ends with a review, and a discussion of useful areas of further work.
[This digital (pdf ) version of the thesis was created in August 2005. The content is
identical to that of the original paper copy of 1986, although the layout and pagination
differs in detail. Readers should note that anemometer calibrations described in
Hobbs (1994) suggest that the windspeed values given in this thesis are incorrect by
a few percent: however, the general conclusions about kite performance stated in the thesis are unaffected by these changes.]
10
Stevenson, J. C. "Traction kite testing and aerodynamics". Thesis, University of Canterbury. Mechanical Engineering, 2003. http://hdl.handle.net/10092/7688.
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A Traction kite is a controllable high performance kite used to pull other objects in a desired direction. In recent years Traction kites have been used for Kite Surfing and Kite Buggying, generating significant sales revenue. In conjunction with Peter Lynn Kites Ltd, this aim of this project was to develop testing methods to determine Traction kite performance. An additional aim was to lay the fundamental groundwork of kite theory to enable further research on kites.
The original testing method used a car-based test rig, in which kites were flown from the roof of the car while driving down a beach. By measuring each kite's line angle and tension under various conditions, the performance of each kite could be determined. Despite extensive development this method was only moderately successful. In particular, the tangent relationship between a kite's line angle and Lift to Drag ratio caused large experimental errors.
In light of the difficulties, a circular testing method was developed for testing Traction kites. It was found that if a kite was flown indoors, in a horizontal circle around the flyer, the performance of the kite was related to the geometry of the test setup. This method was far less sensitive to measurement error and provided very good kite performance results. Unfortunately, this method is limited by the size of the required test site.
Investigations of kite theory determined that the stable flying location of a kite could be predicted and this led to other key flight characteristics. In particular, the structural requirements of a kite can be addressed and the initial turning properties of a kite can be determined.
11
Dadd, George M. "Kite dynamics for ship propulsion". Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/351348/.
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Kite propulsion has emerged as an attractive means to harness wind power in a way that yields environmental and financial benefits. An understanding of the dynamics that affect kite motion and the resulting forces is required to facilitate the design and optimization of kite propulsion systems. In this thesis results from two line tension models are compared with experimentally recorded time histories for dynamic kite flight. New methodologies for investigating kite performance are established. The first zero mass model assumes that the kite and lines are weightless. The second, lumped mass model, considers the kites mass and thus makes use of the equations of motion. It is found that the two different models converge to the same result in the limit where the kite mass tends to zero. The zero mass model has been shown to compare favourably with experimental results. A method for parameterising figure of eight shape kite trajectories and for predicting kite velocity is presented. Results are shown for a variety of manoeuvre shapes, assuming realistic performance characteristics from an experimental test kite. Using a 320m2 kite, with 300m long flying lines in 6.18ms.
12
Schlotzhauer, May. "Gotô Baramon Kite as Emblem". Thesis, University of Oregon, 2013. http://hdl.handle.net/1794/13432.
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The Baramon is a handmade kite from the Gotô Islands in Nagasaki Prefecture, Japan. Its motif features a fierce ogre biting an ornate warrior's helmet. Today, the Baramon is widely recognized as a unique Gotô product. However, nearby regions of Nagasaki also produce similar traditional kites. How and why was the Baramon's exclusive connection to Gotô cultivated and how does it affect notions of regional identity in contemporary Gotô? This thesis argues that while the Baramon belongs to the broader repertoire of Nagasaki kite types, the people of Gotô have gradually appropriated it as a regional symbol by selectively associating particular aspects of Gotô culture and history with the kite's iconography and shape. Consequently, it has become an officially recognized emblem of Gotô. Moreover, the playful transmutation of the Baramon continues in the tourist industry's continuous efforts to revitalize Gotô's image by promoting local history and culture.
13
Bompani, Fabrizio. "Bilancio energetico dell'impianto "Kite Gen Stem"". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amslaurea.unibo.it/775/.
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14
Kiewe, Philipp [Verfasser]. "Therapeutische Implikationen physiologischer Barrieren bei Tumormanifestation / Philipp Kiewe". Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2011. http://d-nb.info/1025490428/34.
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15
Li, Haocheng. "Modeling and Control of Kite Energy Systems". Digital WPI, 2018. https://digitalcommons.wpi.edu/etd-dissertations/532.
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Kite energy systems are an emerging renewable energy technology. Unlike conventional turbines, kite energy systems extract wind power using tethered kites which can move freely in the wind or underwater in an ocean current. Due to the mobility, kite power systems can harvest power from regions with higher and steadier power density by moving in high-speed cross flow motion. An airborne kite energy system harnesses wind power at an altitude higher than the conventional wind turbines, while an undersea kite energy system extracts power close to the ocean surface. In this dissertation, the physical limitation, mathematical modeling, and control system design of the kite energy systems are studied. First, three major physical effects that are acting on the kite energy systems are investigated, including potential force, steady aero-/hydro-dynamic force and added mass effects. Furthermore, the dissipativity of the steady aero-/hydro-dynamic forces with respect to the apparent velocity is established. Based on this analysis, the power generation limit of the kite energy systems is studied. A power limit formulation is given which generalize the two-dimensional result to three-dimensional case. The different physical phenomenon is modeled in different coordinate systems, the difference of the density, viscosity between air and water are significant, and the kite energy system can operate in two distinct modes. To combine different physical effects into a single simulation framework, the equivalences of the kite model in different coordinate systems are established through kinematic analysis. Using these equivalent relations, a unified simulation model for airborne and undersea kite energy systems are derived. The control system design of kite energy systems is also investigated. The resulting equations of motion of kite energy systems are highly nonlinear. Therefore, Lyapunov methods are used to analyze the system behavior. Three different techniques are reviewed, including Lyapunov analysis for autonomous and non-autonomous systems, the ultimate boundedness and input-to-state stability and passivity methods. For the fixed tether length kite energy systems, the ultimate boundedness of the kite translation is established through the dissipativity of the steady aero-/hydro-dynamic force. For the variable tether length kite energy system, the input-to-state analysis is used to design the tether tension that guaranteed the boundedness of the kite translation. In both cases, the Lyapunov based methods are used to design kite rotational control systems which result in PD type control signals. Although this control scheme generates consecutive power cycles for kite energy systems. It is shown that the kite aero-/hydro-dynamical performance is unstable in the simulation which could result in unsteady power generation. To provide a steadier performance in kite translation and power output, the relative dynamics of the kite translation is first proposed. In this model, the kite apparent speed and attitudes, the angle of attack and side-slip angle, are used to describe the kite translation. A nonlinear control scheme is designed to regulate the angle of attack and side-slip angle using back-stepping methods by using the kite angular velocity and control inputs. However, due to the magnitude limit of the angular velocity, the residual error of the apparent attitude tracking remain large for the large desired angle of attack and side-slip angle. To achieve a better power harvesting and aero-/hydro-dynamics performance, the geometric properties of kite angle of attack and side-slip angle are studied. A geometric attitudes trajectory is constructed to track given apparent attitudes. A rotational control system is designed based on the back-stepping and sliding mode methods for the desired geometric attitude, and the high gain observer is applied to acquire the information needed for the rotational control signal. Through the geometric apparent attitudes tracking control algorithm, the angle of attack and side-slip angle act as direct control inputs to the kite translational motion. The kite translational dynamics under the geometric apparent attitude tracking is studied. These dynamics give the possibility of controlling the kite translational motion only through the rotational control scheme.
16
Reichert, Brian Engebos. "Effects of aging and the environment on Snail Kite demography a reassessment of Snail Kite (Rostrhamus sociabilis plumbeus) vital rates /". [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041282.
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17
Milandri, Matteo. "Design of a kite controller for airborne wind energy". Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/13730.
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Airborne wind energy is a field of technology being developed to make use of the vast, renewable wind power resource which is above the reach of traditional wind turbines, without the need for a large tower. Much analytical research has been undertaken in recent years to better understand the problem space. However, there are relatively few working systems that demonstrate their functioning and can be compared with simulations and theory. Off-grid power systems still rely heavily on diesel generators, so devices that tap renewable energy sources with similar ease of deployment and lower cost of energy would help this sector to reduce its reliance on expensive, polluting, fossil fuels. The development of these systems is often performed by teams with business interests leaving little open access content available regarding the design process of such devices or the data that they provide. A kite control pod has been designed for the remote control of a standard kitesurfing kite and a prototype has been demonstrated stably flying such a kite on a fixed length tether. This pod and kite would be tethered to a winch and as the kite flies across the wind, the lift force generated is applied to the winch which is reeled out and electrical power generated. Once fully extended, the tether would be reeled in with the kite de-powered, using some of the generated energy, stored in a battery. This system can then be used as a test bed for the further development of a compact, autonomous, airborne wind energy system for off-grid applications.
18
Adanır, Elif Gülsoy Ufuk Kemal. "Adrenal kitle lezyonlarının benign-malign ayrımında helikal kontrastlı BT incelemelerinin rolü /". Isparta : SDÜ Tıp Fakültesi, 2003. http://tez.sdu.edu.tr/Tezler/TT00118.pdf.
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19
Fredette, Ryan. "Scale-Model Testing of Tethered Undersea Kites for Power Generation". Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-theses/903.
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"This research focuses on studying the feasibility of tethered undersea kite (TUSK) systems for power generation. Underwater tethered kite systems consist of a rigid wing that moves in a circular or figure-8 path below the surface. The tether can connect to a platform mounted either on the surface or anchored to the seafloor. On the kite is a turbine that extracts energy from the kite’s forward motion, which has the potential to be several times the current velocity. This speed multiplication combined with the density increase of water as opposed to air is one of the main benefits of this class of systems over wind turbines. A scale-model TUSK kite was designed. Testing was conducted in a water flume at Alden Research Labs (ARL). Model scale factors were determined from a real world prototype TUSK system currently in commercial development. The scale-model kite was primarily constructed out of ABS plastic using 3D printing rapid prototyping methods. Other components of the system were either repurposed from prior projects or constructed with traditional methods. Testing was conducted at current speeds of 0.15 m/s, 0.31 m/s, and 0.46 m/s; kite pitch angles of 80?, 85?, and 90?; and over circular and figure 8 trajectory shapes. Data collected included the azimuth and declination angles of the rigid tether as well as the power output of the generator on board the kite. Filtering techniques were employed on the data to generate graphs of kite position, velocity, and output for analysis. Relationships between current velocity, kite velocity, kite pitch angle, and power output have been measured. Inaccuracies in the model and areas for improvement in future work have been identified."
20
Soukka, Erik. "Chassis Design of a Control Pod for a Kite Power System". Thesis, KTH, Marina system, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240262.
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This is the report of a master thesis in light weight design of a component in a system that harnesses wind power with a kite. The thesis is a degree project in Naval Architecture at KTH with the course code SD271X. The design work is mostly of a structural nature, but systems engineering, and conceptual design is also a major part of thestudy. The first part introduces the problem where the client, SkySails Power GmbH, is looking to design a new control pod for a system that carries 3 times the load as a previous design. The thesis is limited to the design of the load bearing chassis of the pod, but because at the time the other sub systems or components have not yetbeen designed, the study includes concept design of the entire pod system. The flight pattern and load cases of the kite are studied to get the right understanding of the forces that affect the system. The goal is to design achassis that is as affordable, light weight, and as strong as needed for the task.The requirements of the design problem are decided by the master student and the client together after a prestudy was made but they had minor changes further along the design process. It is a real life, organic iterative design process that has a goal from the start to use the opportunity of an outsider to reconsider the design of akey component of the client’s product.The result is a chassis design that is cheaper to produce and weighs less than if the old chassis would be linearly scaled up with the loads. This design has the same concept as the last but with a couple of modifications concerning some attachments to the rest of the system. The requirement of maintaining all previous functionsis achieved. A significant part of the thesis was to determine the boundaries between the areas of where FEM modelling is applicable and where hand calculations estimations are necessary. The results from this work will be used to build a prototype of the chassis, test it in a tensile testing machine, and finally integrate it into theentire system and flown.I en värld som hotas av klimatförändringar på grund av utsläppen av fossila bränslen i atmosfären, men där människorna som befolkar den har ett stort behov av energi för sin livsstil finns det ett behov av alternativa källor och metoder till att utvinna den. Ett relativt nytt och hållbart sätt till detta är kite-baserad vindkraft. Mananvänder sig av en skärm eller drake, lite som en fallskärm fast i större storlek, som är kopplad med en vajer till en bas-station där vajern rullas upp på en trumma. Skärmen fungerar som en vinge och skapar ett lyft när den flyger i kors-vind och rullar ut vajern på trumman som fungerar samtidigt som en elektrisk generator. Alternativtlåter man skärmen ha ett konstant avstånd och har bas-stationen installerad på ett fartyg och använder lyftet från skärmen till att driva fram fartyget.Ett av företagen som arbetar med att få denna teknik lönsammare än konventionell vindkraft i vissa väder och geografiska lägen är SkySails som gav i uppdrag som examensarbete att utveckla en ny modell av chassit till styrenheten till sitt kite-system. Styrenhetens ligger mellan skärmen och vajern och har som huvudfunktion attstyra draken som görs med en mindre elektrisk motor och ett tandat bälte. Dessutom innehåller styrenheten mycket elektronik och sensorer vilket gör utvecklingen till ett komplext problem. Studentens två huvuduppgifter var göra en konceptuell utvecklingsstudie av hela styrenheten och att utveckla ett chassi, till ett stadie att dengår att tillverka från ritningar, för det mest framgångsrika konceptet. Chassit måste tåla hela skärmens laster och kosta och väga så lite som möjligt.Designprocessen var iterativ med ett systemingenjörsmässigt angreppssätt. Första delen av tiden ägnades åt att studera den befintliga styrenheten och lära sig om hela kite-teknologin. Sedan sattes tydligare och mätbara mål och specifikationer tillsammans med uppdragsgivaren. Därefter började den kreativa fasen och skissa fram bådekonventionella och okonventionella koncept för hela styrenheten. De tre mest lovande koncepten utvärderades mot de tidigare satta kriterierna så kvantifierbart som möjligt och det visade sig att det koncept som hade används var fortfarande det bästa. Sista fasen av arbetet var att sätta gränssnittet för chassit i detta koncept ochdesigna chassit så lätt som möjligt.Resultatet blev ett liknande chassi jämfört med vad det var innan men med en vikt som var lägre än om det förra chassit hade ökat sin vikt lika mycket som lastökningen. Kostnaden för chassitillverkningen gick ner i absoluta termen på grund av byte av material och tillverkningsmetod. Av detta kan man påstå att examensarbetet varframgångsrikt och nådde sina mål. Däremot måste en prototyp tillverkas testas i för att fastställa att modellerna som tog fram designen motsvarar verkligheten. Dessutom måste de andra komponenterna tillverkas i för att hela styrenheten kunna testas så som den är avsedd att användas. Chassit och styrenheten är bara ett steg på vägentill en hållbarare värld men metoderna som användes kan återanvändas.
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Борисович, В. А. "Формування та просування бренду торгової марки «KITE» (на матеріалах ТОВ «ВІВАТ Трейдінг»)". Thesis, Чернігів, 2020. http://ir.stu.cn.ua/123456789/20679.
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Борисович, В. А. Формування та просування бренду торгової марки «KITE» (на матеріалах ТОВ «ВІВАТ Трейдінг») : магістерська робота : 075 Маркетинг / В. А. Борисович ; керівник роботи Забаштанська Т. В. ; Національний університет «Чернігівська політехніка», кафедра маркетингу, PR-технологій та логістики. – Чернігів, 2020. – 86 с.У кваліфікаційній роботі розглянуто питання формування та просування бренду торгової марки. Кваліфікаційна робота містить такі розділи: – теоретичні основи розвитку бренду; – аналіз формування та просування бренду торгової марки «KITE» (на матеріалах ТОВ «ВІВАТ Трейдінг»); – шляхи удосконалення просування бренду торгової марки «KITE». Висновки, зроблені у процесі роботи, відображають основні результати проведення дослідження та пропозиції щодо вдосконалення просування бренду торгової марки «KITE».
The qualification work addresses the development and promotion of the brand. The qualification work contains the following sections: – theoretical foundations of brand development; – analysis of the development and promotion of the brand «KITETM» (using the materials of Vivat Trading LLC); – ways to improve the promotion of the brand «KITETM». In the course of work conclusions and offers of improvement of advancement of the brand «KITETM» were made.
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LUNDGREN, Edwin Althor Jürgen Nieling. "Desenvolvimento conceitual, projeto, construção e testes de um barco bidirecional sem leme movido por kite". Universidade Federal de Pernambuco, 2015. https://repositorio.ufpe.br/handle/123456789/16058.
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Tese de Doutorado em Engenharia Mecânica - Edwin Lundgren - Recife 2015.pdf: 6647333 bytes, checksum: 562061d27a257684cbc87a9f44cca7a8 (MD5)Made available in DSpace on 2016-03-17T18:54:32Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Tese de Doutorado em Engenharia Mecânica - Edwin Lundgren - Recife 2015.pdf: 6647333 bytes, checksum: 562061d27a257684cbc87a9f44cca7a8 (MD5) Previous issue date: 2015-07-24
O presente trabalho apresenta como tema central o desenvolvimento e a realização de um conceito tecnológico inovador para propulsionar embarcações utilizando a força do vento por meio de uma pipa dirigível de alto desempenho aerodinâmico conhecida como Kite. Para demonstrar a eficiência da tecnologia aplicada é projetado, manufaturado e testado um barco protótipo com quatro metros de comprimento capaz de carregar uma ou duas pessoas. Kites modernos são projetados para operar em regime de sustentação aerodinâmica e podem ser movimentados de forma razoavelmente controlada em uma região denominada “janela de vento” e possibilitam a geração de forças perpendiculares á direção do vento. Assim, uma embarcação tracionada por Kites e equipada com uma quilha pode realizar cursos cruzados contra o vento. O equilíbrio hidrodinâmico da embarcação tratada neste trabalho é alcançado através de tecnologia com uso de uma plataforma giratória azimutal e um conjunto de mecanismos para o manuseio do Kite e o controle do rumo do barco. É apresentado o cálculo para relacionar o equilíbrio da embarcação com o voo do Kite. Não há necessidade de leme para controlar o rumo da embarcação, portanto o barco protótipo deste trabalho não apresenta algum leme. Os dados obtidos em teste foram relacionados, processados e os resultados quantitativos de percursos e manobras são apresentados e descritas as condições e posicionamentos das grandezas relevantes. A Propulsão do barco prototipo por meio de um Kite mostrou bons resultados em ventos acima de 18 km/h (10 nós). Nestas condições ficou comprovado a eficiência do sistema inovador para propulsionar e guiar barcos com Kites como o protótipo apresentado no presente trabalho.
This work has as its central theme the development and realization of an innovative technological concept of boat propulsion using the wind power through a steerable Kite. To demonstrate the effectiveness of the applied technology there is designed, manufactured and tested a prototype boat with four meters in length capable of carrying one or two people. Modern Kites are designed to operate in aerodynamic lift system. As a result, these devices can be moved in fairly controlled manner in a semi-spherical region called "wind window" and allow the generation of perpendicular forces to wind direction. Thus, a vessel pulled by a Kite and equipped with a good keel can perform crossed courses against the wind. The hydrodynamic balance of the vessel treated in this work is achieved through the use of a technology with azimuthal platform and a set of mechanisms for Kite handling and controlling the direction of the boat. A new method of calculation of the balance of the boat during the Kite flight is presented as well as some results of hydrodynamic simulations. Another advantage of the azimuth platform technology is the ability to control the direction of the boat only by the Kite control devices and the relative positioning of the azimuthal platform within the hull. There is no need of a rudder to control the direction of the boat, so the boat prototype of this work does not present any rudder. The test data were related, processed and quantitative results concerning courses and maneuvers are presented and the conditions and positions of the relevant magnitudes are described. The propulsion of the prototype boat by a Kite showed good results in winds over 18 km/h (10 knots). Under these conditions the efficiency of the innovative propulsion system for boats with Kites as the prototype presented in this work was testified. The innovative directional control allows the handling of the vessel at high upwind courses. The bidirectionality of the prototype boat increases the possibilities of executing maneuvers with reversal of the navigation direction and easy windward routes.
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Grözinger, Karl Erich. "Handling of holy traditions as a path to mystical unity in the Kitve ha-‘Iyyun". Universität Potsdam, 1993. http://opus.kobv.de/ubp/volltexte/2008/1857/.
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The writings from the thirteenth century called by Gershom Scholem the "Writings of the 'lyyun circle" are one of the most intriguing chapters of early kabbalah - this I need not to elaborate on as it is a well known fact to anyone whoever had read these texts or the literature about them. When reading these texts, one gets the impression as if the authors had at hand a box full of terms and phrases into which everybody could just stick his hand and take terms and phrases out of it in order to arrange them according to his own taste, disregarding the meaning they have in the writings of his fellow kabbalists. The result was, that we now have before us a large number of varying mosaic pictures in which we detect again and again the same mosaic pebbles, however composed differently.
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Patel, Anaal S. "In whose interests: Analyzing social capital in the Pendaneni Kikwe women's group in Karangai, Tanzania". Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1090938165.
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Sergio, Fabrizio. "Factors affecting habitat selection,density and productivity in the black kite (Milvus migrans)". Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269482.
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Bigi, Nedeleg. "Investigation of the dynamic motions and operability of a ship towed by kite". Thesis, Brest, 2017. http://www.theses.fr/2017BRES0133/document.
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Afin de réduire les émissions de gaz à effet de serre et le coût du transport maritime, l'utilisation des cerfs-volants comme système de propulsion auxiliaire des navires est prometteuse. Pour estimer les performances et l’opérabilité d’un navire tracté par cerf-volant, une modélisation dynamique du système est alors mise en oeuvre. Une modélisation analytique de cerf-volant est utilisée. Ce modèle néglige la masse du cerf-volant et suppose que les lignes sont droites et indéformables. Ces hypothèses conduisent à un modèle cinématique dépendant du coefficient de portance et de la finesse aérodynamique. Une évolution linéaire des coefficients aérodynamiques en fonction de la courbure de la trajectoire de vol est proposée. Par ailleurs, en développant un modèle quasi analytique de ligne, il est montré qu’à partir de 2 m.s-1 de vent relatif que l’hypothèse de ligne droite est raisonnable. En se basant sur un modèle de ligne, un critère analytique de vitesse de vent minimum permettant un vol quasi-statique est présenté. Dans le but de résoudre l’ensemble des termes d’interaction entre le cerf-volant et le navire, un modèle linéarisé de tenue à la mer temporelle est développé. Le produit de convolution de la réponse impulsionnelle du navire est calculé avec des systèmes d’états. Cependant comme celle-ci représente mal les mouvements horizontaux des navires, le modèle développé est alors couplé à un modèle de manoeuvrabilité. Pour étudier les interactions entre le cerf-volant et le navire un couplage monolithique et un couplage dissocié sont comparés. Le couplage dissocié néglige l’influence des mouvements du navire sur le vol du cerf-volant. En cas de mer calme, les résultats obtenus par les deux types de couplage sont très proches. En cas de houle régulière les mouvements du navire sont principalement causés par la houle. Le couplage monolithique montre qu’un réseau de sous-harmoniques basse fréquence apparait alors dans le spectre d’excitation du navire. La fréquence fondamentale des sous-harmoniques est donnée par la différence entre la fréquence de vague et la fréquence de l’harmonique la plus proche de l’excitation du kite. Quand cette différence est suffisamment petite, un phénomène d’accrochage apparait. Ce phénomène est bénéfique pour le cerf-volant et le navire quand le décalage des harmoniques d'excitation correspond à une augmentation. Par ailleurs, une étude de la stabilité de route montre qu'il est nécessaire de contrôler activement le safranIn order to reduce greenhouse gas emissions and shipping costs, the use of kites as an auxiliary propulsion device for ships is promising. In order to estimate the performance and the operability of a kite-towed vessel, a dynamic modeling of the system is implemented. A classical kite modeling is used. This model neglects the mass of the kite and assumes straight and inelastic tethers. These assumptions lead to a kinematic model depending on the lift coefficient and the aerodynamic lift to drag ration angle. A linear evolution of these aerodynamic coefficients as a function of the curvature of the flight path is proposed. In addition, by developing a quasi-analytical line model, it is shown that from 2 m.s-1 of relative wind the straight tether assumption is reasonable. Based on the tether model, an analytical criterion assessing the minimum wind speed to enable a quasi-static kite flight is developed. To solve all the interaction terms between the kite and the ship, a time domain seakeeping model based on the linearized ship equation of motion assuming a potential flow is developed. The convolution product of the impulse response of the ship is computed with state-space systems. However, since horizontal ship motions are not well represented by such theories, a coupling with a maneuvering model is presented.Comparisons to experimental data tests show good agreements. To study the interactions between the kite and the ship, a monolithic coupling and a dissociated coupling are compared. The dissociated coupling neglects the influence of ship motions on the kite flight. In a calm water case, results obtained by the two types of coupling are very close. In regular waves, ship motions are dominated by the wave influence. Thus, with the monolithic coupling, a network of low frequency subharmonic appears in the kite excitation spectrum. The fundamental frequency of the subharmonic is given by the difference between the wave frequency and the frequency of the nearest kite excitation harmonic. When this difference is small enough, a lock-in phenomenon appears. This phenomenon is a benefit for the kite and the ship when the shift of the excitation harmonics corresponds to an increase. Furthermore, a course keeping stability study shows that the rudder needs to be actively controlled
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Kitze, Christiane [Verfasser], Michael [Akademischer Betreuer] Tchirikov, Hans [Akademischer Betreuer] Heynemann e Karin [Akademischer Betreuer] Jordan. "Indikationen und Ergebnisse der postoperativen Strahlentherapie des Endometriumkarzinoms / Christiane Kitze ; Michael Tchirikov, Hans Heynemann, Karin Jordan". Halle, 2016. http://d-nb.info/1122438664/34.
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Dixon, William J. B. "A study of the re-introduced population Red Kite (milvus milvus) in Southern England". Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393480.
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Naidu, Sam. "The first world’s third world expert: self-exoticization in Khaled Hosseini's The Kite Runner". Journal of Commonwealth and Postcolonial Studies, 2015. http://hdl.handle.net/10962/53922.
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A literary criticism of the book "The Kite Runner" by Khaled Hosseini is presented. It outlines the characters and explores the symbolic significance of these characters. It explores the aspects of contemporary literature among neo-Orientalist representations of the Middle East and the Muslim world. It notes on the contribution of the Euro-American intervention in military and cultural identities of Middle East Orientalists. An overview of the story is also given.
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Araujo, Helmut. "Controle da máquina elétrica de um aerogerador com aerofólio cabeado na configuração pumping-kite". reponame:Repositório Institucional da UFSC, 2017. https://repositorio.ufsc.br/xmlui/handle/123456789/182802.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Automação e Sistemas, Florianópolis, 2017.Made available in DSpace on 2018-01-23T03:17:51Z (GMT). No. of bitstreams: 1 349537.pdf: 3602326 bytes, checksum: 7e58169dc85cf738efdbffdd96fcc49e (MD5) Previous issue date: 2017
Nos últimos anos a tecnologia para exploração da energia dos ventos em altitudes elevadas - Airborne Wind Energy (AWE) - vem se desenvolvendo rapidamente. Várias empresas e grupos de pesquisa em todo o mundo já estão testando seus protótipos para validar as diferentes configurações e conceitos de AWE, sendo que todos dependem do controle de máquinas elétricas. A otimização da potência produzida e também o voo robusto da pipa frente a variações no vento podem ser obtidos com o controle adequado das máquinas. As máquinas utilizadas em AWE devem ser capazes de operar tanto como gerador, produzindo eletricidade, quanto motor durante manobras como pouso e fase de recolhimento. Essa versatilidade traz uma maior complexidade para a eletrônica de potência empregada.O controle de máquinas de corrente alternada é comumente utilizado na indústria, principalmente devido ao avanço de ferramentas como o conhecido Controle Vetorial, também nomeado de controle por orientação de campo (FOC). Nesse método, as correntes de fluxo magnético e torque eletromagnético são controladas separadamente em malhas internas, enquanto que a velocidade da máquina é controlada na malha externa e é responsável por produzir as referências para as malhas de corrente. Embora o controle de velocidade seja adequado para diversas aplicações, sua utilização em AWE pode ser problemática especialmente quando os ventos forem turbulentos. Manter a velocidade da máquina constante nesse cenário pode levar a flutuações indesejadas na força de tração do cabo e no ângulo de ataque do aerofólio, e eventualmente pode levar a pipa à condição de estol (queda).Para melhorar a confiabilidade do voo, é proposta nesse trabalho uma estratégia para controlar a força de tração no cabo de um sistema AWE na configuração pumping-kite através da adição de uma malha externa ao FOC. Essa malha compara o valor de tração medido com uma referência ótima e, baseado no erro de comparação, produz uma referência de velocidade para o FOC. As simulações são parametrizadas para representar o protótipo do projeto UFSCkite, a qual possui uma única máquina a ímãs permanentes de 12 kW e é projetada para suportar trações de até 800 kgf. Os resultados demonstram a eficiência do controlador proposto, não somente pelo seguimento de referências de tração, como também prevenindo que a pipa entre em estol.
Abstract : In the last few years the Airborne Wind Energy (AWE) technology has been undergoing a rapid development. Several companies and research groups around the world have already built prototypes to validate different AWE concepts and configurations, all of which rely on the control of electric machines. An appropriate machine control can optimize the power production and also allow for the tethered wing to fly robustly regardless of wind fluctuations, while respecting system constraints such as the maximum tether traction force and the reel speed saturation. These machines should be capable of operating not only as a generator, when producing electricity, but also as a motor during maneuvers such as landing and recovery phases. This required versatility brings extra complexity to the involved power electronics.Alternated current machines are commonly used in the industry, mainly due to advanced features such as the well known Vector Control, also referred to as Field Oriented Control (FOC). In this scheme, the magnetic flux and electromagnetic torque currents are regulated in the inner loop, whereas the machine speed is controlled in the outer loop. Although speed control is suitable for many applications, using it in a pumping-kite system might be problematic, especially when the kite is exposed to high levels of wind gusts. Keeping the machine speed constant in this scenario may cause the traction force and the airfoil angle of attack to fluctuate to undesirable values, which may eventuallylead the kite to a stall condition (and eventual crash).To improve flight reliability, in this work we present a strategy to control the tether traction force of a pumping-kite unit by adding an external loop to the FOC. This loop compares an optimum reference to the instantaneous measured traction force and, based on this control error, generates a speed reference to the FOC. The simulation is parameterized to represent the ground station prototype under development by the UFSCkite team, which is based on a single permanent-magnet machine of 12 kW and designed to support up to 800 kgf of traction force. The results show the effectiveness of the proposed control strategy, not only for tracking the traction force reference, but also for preventing the kite from stalling.
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Kitze, Manfred [Verfasser], Ralph [Gutachter] Neuhäuser, Klaus G. [Gutachter] Strassmeier e Arnold [Gutachter] Benz. "Untersuchung der Superflare-Aktivität bei sonnenartigen Sternen / Manfred Kitze ; Gutachter: Ralph Neuhäuser, Klaus G. Strassmeier, Arnold Benz". Jena : Friedrich-Schiller-Universität Jena, 2017. http://d-nb.info/1177599554/34.
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Haußmann, Janosch [Verfasser], Wolfgang [Akademischer Betreuer] Brück, Bernd [Akademischer Betreuer] Kitze e Martin [Akademischer Betreuer] Oppermann. "Axonpathologie in Immunsubtypen von Multiple-Sklerose-Läsionen / Janosch Haußmann. Gutachter: Bernd Kitze ; Martin Oppermann. Betreuer: Wolfgang Brück". Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2013. http://d-nb.info/1045069329/34.
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Botero, Waldor Federico Arias. "Mulheres indígenas da \'Çxhab Wala Kiwe\': relações étnico-racial, gênero e sexualidade nos Andes colombianos". Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/8/8134/tde-13102016-150342/.
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Este trabalho busca compreender as ações das mulheres indígenas Nasa da Asociación de Cabildos Indígenas del Norte del Cauca ACIN, que visam melhorar as condições e situações de vida das mulheres nos territórios de resguardo Çxhab Wala Kiwe. A partir da análise de relatos de mulheres que são líderes locais, dos documentos escritos produzidos pela própria organização e relatos etnográficos, tentamos descrever a maneira como surgiu o Programa Mujer da ACIN, como as mulheres vem enfrentando os desafios para tentar eliminar a violência contra elas (em particular a violência sexual), e a maneira como estabelecem relações com organizações de mulheres externas ao mundo indígena. Na análise, o processo de subjetivação das mulheres se choca com o contexto de guerra da região do norte do Cauca. É demonstrado como as mulheres através da história da organização indígena foram consolidando ferramentas e formas de organização no interior do mundo indígena não só para promover a visibilidade do trabalho das mulheres nas comunidades, como para exigir o fim da violência contra as mulheres e seus direitos particulares, promovendo a formação para a participação ativa nas ações coletivas da comunidade. Essas atividades são desenvolvidas a partir da posição comunitariamente assumida de não participação no conflito armado. Apesar disso, o estudo também mostra como a guerra termina por afetar essas comunidades.This text aims to describe the actions which nasa indigenous women - they are part of the Asociación de Cabildo Indigenas del Norte del Cauca ACIN - does to improving situations and conditions of life of women in the reservation territories of the Çxhab Wala Kiwe. The analysis is based on different materials as follows: life story of women leaders, official documents produced by the organization, the literature review, and ethnographic account made during field work. With these materials, the text describes how Programa Mujer of ACIN emerged, facing the challenges of trying to eliminate the violence against women (in particular sexual violence). The description also shows the way these women establish relationships with other organizations outside the indigenous world through the program. In the analysis womans subjectivation processes come up with the context of war of north of Cauca. The description shows how women through the history of the indigenous organization has been consolidating tools and forms of organization within the indigenous world to promote the visibility of womens work demanding an end to the violence against women and particularly their rights. In this sense, one issue emphasized by them is the promotion and training for active participation in collective actions of the community. Despite the fact that these communities state their position of nonparticipation in the armed conflict, the analysis shows how war has an impact in these communities and these activities.
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Sjödén, Madelene. "The Good, The Bad, The Guilty : A character analysis of Khaled Hosseini’s The Kite Runner". Thesis, Karlstads universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-79961.
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In Khaled Hosseini's novel The Kite Runner (2003) the reader follows the narrator and protagonist Amir’s as he embarks on his journey towards redemption. Amir’s need for redemption is based on the tragic childhood event where Amir’s friend and servant Hassan were assaulted by their nemesis Assef as Amir can, but fails to intervene. This event is central to the plot. The story is told through Amir's memories and contains details about his relationship to the people close to him as well as his nemesis. I will argue that Khaled Hosseini’s The Kite Runner can be interpreted through a character analysis based on the names Hosseini chose for three of his characters and how they correlate to the portrayal of the characters, their personalities and how they mirror the actors in the Afghani civil war.I Khaled Hosseinis roman The Kite Runner (2003) följer läsaren berättaren och huvudpersonen Amir på hans resan genom livet. Den tragiska händelsen där Amirs vän och tjänare Hassan blev våldtagen av deras plågoande Assef är en central del av handlingen. Handlingen skildras genom Amirs minnen och innehåller detaljer om hans relationer till de personer som står honom nära såväl som detaljer om hans fiende. Jag argumenterar för att Khaled Hosseinis The Kite Runner kan tolkas genom en karaktärsanalys som baseras på de namn som Hosseini valt till sina karaktärer och hur de står i relation till porträtteringen av karaktärerna och deras personligheter samt hur de speglar aktörerna i det afghanska inbördeskriget.
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Thomson, Victoria K. "Sea change for Australia's coastal raptors: the cost of urban living". Thesis, Griffith University, 2021. http://hdl.handle.net/10072/408097.
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The conversion of natural environments into land useful for human habitation has many effects on biodiversity and can alter the way terrestrial and aquatic ecosystems function. Urbanisation is particularly potent in coastal areas, where birds of prey have often been recognised as indicators of environmental health. In Australia, four coastal raptor species are present: White-bellied Sea-Eagle (Haliaeetus leucogaster), Eastern Osprey (Pandion haliaetus cristatus), Brahminy Kite (Haliastur indus) and Whistling Kite (Haliastur sphenurus). Coastal raptors are important vectors of nutrient transport between marine and terrestrial systems and are key players in structuring biological communities. Most coastal raptor research has been in southern Australia where populations are in decline. However, little has been conducted in the urbanising region of South-East Queensland (SEQ). This thesis addressed urbanisation impacts on Australia’s coastal raptors in SEQ including breeding habits, physical impacts, rehabilitation outcomes and the importance of protected areas.
Chapter 2 discussed Eastern Ospreys and their ability to adapt to urban areas and nest on artificial structures. This behaviour was investigated in two regions of SEQ: urbanised Moreton Bay Marine Park (MBMP) and rural Great Sandy Marine Park (GSMP). Most nests in MBMP were on artificial structures, while in GSMP most were on natural structures. This chapter showed that Eastern Ospreys have a high propensity for nesting on artificial structures when close to urban environments and that additional nesting platforms should be erected to avoid the risks associated with nesting on unsafe structures.
Physical threats in urban landscapes are many and varied for Australia’s coastal raptors. These threats were investigated in Chapter 3, where admissions to Currumbin Wildlife Hospital Foundation (CWH) were analysed. Most birds were admitted from anthropogenic causes, most significantly from fishing equipment entanglement. Bird attack and vehicle strike were also significant. This is the first time fishing equipment entanglement has been quantified as a significant cause of injury to coastal raptors. This chapter highlights the importance of public education on the threats fishing equipment can cause to local wildlife.
Although the majority of coastal raptors admitted to CWH were released, assessing rehabilitation success of raptors has been rarely attempted. Rehabilitation is intensive, expensive and the success rates post-release are rarely investigated. In Chapter 4, 28 banded coastal raptors and 2 White-bellied Sea-Eagles, fitted with GPS tracking devices, were monitored post-release. Band return was low but both tagged White-bellied Sea-Eagles survived beyond the crucial six week period, suggesting successful rehabilitation. Home ranges were much larger than previously reported for this species and illustrates how GPS tracking can enhance our knowledge of the ecology of these raptors.
Chapter 5 explored trends in the presence of these species in SEQ using three datasets. Long-term data from Queensland Wader Study Group, habitat loss data from Global Forest Watch and nest location data were used to explore temporal trends in species sightings and cumulative habitat loss in Moreton Bay. White-bellied Sea-Eagle and Whistling Kite sightings decreased with increased cumulative tree cover loss while nest location data showed that coastal raptors were nesting in protected areas. These findings suggests that these areas are critical for their persistence in the region.
This thesis showed that while many processes threaten the coastal raptors of SEQ, management is possible with education and innovative measures. Watercourses and protected areas were critically important for coastal raptors in urban areas, where fishing equipment entanglement is a key threat. Rehabilitation of coastal raptors by CWH is often successful and could be critical for the management of species populations and mitigation of threats. Furthermore, the benefits of GPS tracking in increasing our knowledge of the ecology of coastal raptors was clearly demonstrated. Although susceptible to many threats, the coastal raptors of SEQ showed resilience and adaptability, finding opportunities to breed in the protected areas of Moreton Bay. Eastern Ospreys have the ability to nest on various structures within the urban landscape and although risky, this behaviour shows that breeding platforms could be erected in urban areas to encourage ospreys to avoid dangerous nest sites and reduce competitive pressures for nesting space with the other species. The information presented in this thesis will contribute significantly to our knowledge on Eastern Ospreys, White-bellied Sea-Eagles, Whistling Kites and Brahminy Kites in coastal South-East Queensland.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environment and Sc
Science, Environment, Engineering and Technology
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Du, Pontavice Emmanuel. "Propulsion par cerf-volant : envol et pérégrinations". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLX015/document.
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Les cerf-volants existent depuis l'Antiquité, mais leur utilisation comme moyen de récupération de l'énergie éolienne est relativement récente. Pourtant, leur légèreté et leur capacité à aller chercher les vents forts et réguliers en altitude en font un dispositif compétitif pour produire de l'électricité ou pour tracter des navires commerciaux. En effet, un cerf-volant peut espérer produire plus de $10$ kW.m$^{-2}$. Cela implique qu'un cerf-volant de $1000$ m$^2$ pourrait apporter une assistance substantielle (typiquement $20$ $%$) à la propulsion des plus gros cargos actuels. Cette thèse s'intéresse à deux problèmes associés au développement de tels cerf-volants:Comment les faire décoller et atterrir de manière autonome et sans risque de les perdre? L'utilisation de cerf-volants à structure gonflable donne l'avantage d'avoir une aile rigide et légère en vol et compacte lors de son stockage. Pour aider au dimensionnement de ces cerf-volants, nous étudions dans le première partie de la thèse le comportement des structures gonflables soumis à des chargements statiques et dynamiques.Comment s'assurer de son vol stable? Une fois qu'il a décollé, un cerf-volant doit pouvoir rester en l'air. Il apparait cependant que dans certaines conditions, les cerf-volants entrent dans des oscillations de grandes amplitudes avant de tomber au sol. Grâce à des expériences en soufflerie, nous étudions dans la seconde partie de la thèse l'origine de ces oscillations et les conditions à réunir pour les éviterKites exist since ancient times, but their use as wind energy harvesting device is relatively recent. Still, their light weight and ability catch strong and steady winds in altitude make them a competitive mean to generate electricity or to tow commercial ships. Indeed, a kite can typically produce $10$ kW.m$^{-2}$. This implies that a $1000$ m$^2$ kite could provide substantial assistance ($20$ $%$) to the propulsion of the biggest current tankers. This thesis focuses on two issues associated with the development of such kites:How can one perform autonomous take off and landing without the risk of losing them? Kites with inflatable structures take advantage rigidity and lightness during flight and from high compactness during storage. It also allows them to float if they crash on the ocean. To design those kites, we study in the first part of the thesis the behavior of inflatable structures under static and dynamic loadings.How can one achieve a stable flight? Once it takes off, it appears that under certain conditions, the kites undergo large amplitude oscillations that eventually lead to their fall onto the ground. Using wind tunnel experiments, we examine in the second part of the thesis the origin of these oscillations and the conditions which prevent them from occurring
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Katzenberger, Jakob Kaspar [Verfasser]. "Habitat use and population viability of the Red Kite (Milvus milvus) in Germany / Jakob Kaspar Katzenberger". Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2021. http://d-nb.info/1233481444/34.
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Moran, J. R. "'Over the Kite Path' : a novel and dissertation on the development of narrator and narrative voice". Thesis, Liverpool John Moores University, 2017. http://researchonline.ljmu.ac.uk/6716/.
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In the field of Creative Writing, much is written about narrative form and narrative voice. Narrator and narrative voice have always been important to me, and they were essential to the creation of my own novel, Over the Kite Path. It is my intention that this thesis (incorporating the novel itself, and the supporting dissertation) captures the creative process in a way that will be useful to other practitioners and writing scholars, by articulating complex and often abstract concepts in an accurate and unique way. The success of my novel was largely dependent on the success of my handling of its narrator and narrative voice, and my ability to create the illusion that my narrator was real. But how could this be measured, and – ultimately – how did extensive research and close analysis of my working practice contribute to this? While writing my novel, I researched many topics (including historical research, research on other practitioners in the field, and also the consideration of some of the philosophical and psychological aspects of my creativity), with a particular focus on the development of narrator and narrative voice. Within this context, I considered the novel’s place within the fields of literature and creative writing and compared my work – and my working practice – with other authors, in order to help me understand and analyse how my narrative voice had developed. As a result of this analysis and research, my novel has an original and convincing narrator. Whilst I am aware that the narrator can never be ‘real’, I am also comfortable with creating and maintaining the illusion of the narrator’s ‘reality’ for the reader. In addition, I have demonstrated the importance of this illusion to the writer during the creative process. Via a deeply analytical account my own experience while writing this novel, I have documented how my own creative work was enhanced by my research, and I believe I have provided new approaches and theories on the creative – and often existential - qualities of the writing process. It is my hope that these new approaches and theories make an original contribution to the field of Creative Writing, and will enhance the way in which the craft of writing is considered in the future by practitioners, critical theorists, and literary scholars alike.
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Chan, Shuen-yan, e 陳旋茵. "History and memory in Hou Hsiao-hsien's A City of Sadness and Tian Zhuangzhuang's The Blue Kite". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31951843.
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Cadalen, Baptiste. "Modélisation et commande robuste d'une aile de kite en vol dynamique : application à la traction d'un navire". Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0136.
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Les énergies renouvelables représentent aujourd'hui un domaine de développement de plus en plus important, au vu de la consommation énergétique mondiale et de ses conséquences désastreuses sur l'environnement. Les différents accords politiques, notamment l'accord de Paris, ne peuvent à eux seuls apporter une solution définitive au changement climatique actuel. Les contraintes imposées par la réduction des émissions de CO_2 et l’augmentation du prix du pétrole dans l’industrie maritime ont poussé Yves Parlier à lancer le projet « beyond the sea » dans le but de développer des cerfs-volants (kites) dédiés à la propulsion auxiliaire des navires. L'objectif principal de cette étude est donc la modélisation et la commande robuste d'une aile de kite en vol dynamique. Le but à terme étant l'élaboration d'un pilote automatique dédié à la traction d'un navire par kite. Un modèle « point-masse » du kite est proposé afin de comprendre et contrôler sa dynamique. Les différents paramètres du modèle sont estimés à partir de données expérimentales obtenues lors d’essais en conditions réelles. Des simulations en boucle ouverte sont proposées afin de valider la cohérence du modèle. Pour effectuer un vol dynamique, une trajectoire en forme de huit est définie dans la fenêtre de vol. La position, la taille et l’orientation de cette trajectoire sont des paramètres ajustables par l’utilisateur. Un algorithme de suivi de trajectoire est développé permettant ensuite de synthétiser une loi de commande robuste intégrant le modèle du kite. Ce pilote automatique permet donc d’effectuer une grande variété de trajectoires pour toute une gamme de vitesses de vent. Enfin, des simulations en boucle fermée montrant les performances théoriques du système mettent en évidence l’intérêt de la propulsion auxiliaire des navires par kiteThe need in reducing the CO_2 emissions and the increase of oil prices affect all transportation industries and especially the maritime industry. This has led to the search for more energy-saving ship propulsion systems. Taking advantage of wind energy by using tethered wings, or kites, as an alternative propulsion source can be an effective solution. The "beyond the sea" project, led by Yves Parlier, aims to provide ships an alternative green energy source. In most wind conditions, compared to a static flight, a dynamic motion of a tethered wing with an eight-shaped pattern can provide sufficient force through traction to tow a ship. Therefore, the main objective of this study is the modeling and robust control of a tethered kite in dynamic flight. To this end, a point mass model is first used to describe the kite dynamics. The model parameters are estimated from experimental data and the aerodynamic coefficients are identified using data from a quasi-static flight. Open loop simulations are conducted to verify the kite behavior and the overall coherence of the model. To ensure a dynamic flight, an eight-shaped trajectory is defined within the wind window. Its position, size, orientation and direction are all adjustable parameters. A path-following strategy is then developed in order to design a robust control law including the kite model. This allows the system to be used in different trajectories with a wide range of wind speeds. Closed-loop simulations are presented to show the efficiency of the path-following algorithm, and the various theoretical performances obtained shows the efficiency of a kite dedicated to vessels auxiliary propulsion
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Brakes, Craig R. "The exposure of non-target wildlife to rodenticides, with special reference to the red kite (Milvus milvus)". Thesis, University of Leicester, 2003. http://hdl.handle.net/2381/29838.
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Factors affecting exposure of wildlife to rodenticides were studied in the field. Time lapse video monitoring demonstrated changes in rat behaviour during normal routine rat control. Rats suffering pre-lethal anticoagulant toxicosis lost their thigmotactic behaviour, becoming increasingly active in open space. Poisoned rats also sat motionless in open space for relatively long periods of time and exhibited lethargic and uncoordinated movement. The observed behavioural change is likely to increase the exposure and vulnerability of rodenticide contaminated rats to their predators. Rat carcasses disappeared rapidly where local scavengers were active. Video monitoring showed several scavenging mammals and birds taking carcasses. The red kite is potentially the avian species most at risk of secondary poisoning by rodenticides, owing to its scavenging niche and foraging around farms. Observations of captive adult birds highlighted a preference for viscera of rats, which may increase the likelihood of rodenticide exposure if rats were poisoned. Monitoring of parental provisioning of prey items to nestlings showed rats to be a major component of diet. Hatchlings were fed only the viscera, indicating that nestlings of this age may be at greatest risk of secondary poisoning. Study of non-target small mammals as route of exposure revealed that a large proportion of local woodmouse and vole populations fed from bait stations during normal rat control. Residue analysis demonstrated substantial body burdens that may be transferred to small mammal consumers. Calculations indicated that some predators might be a high risk of receiving a lethal dose if they foraged in a rodenticide treated site and consumed poisoned non-target small mammals.
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Chan, Shuen-yan. "History and memory in Hou Hsiao-hsien's A City of Sadness and Tian Zhuangzhuang's The Blue Kite". Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21241065.
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Ghasemi, Amirmahdi. "Computational Modeling of Tethered Undersea Kites for Power Generation". Digital WPI, 2018. https://digitalcommons.wpi.edu/etd-dissertations/56.
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Ocean currents and tidal energy are significant renewable energy resources, and new concepts to extract this untapped energy have been studied in the last decades. Tethered undersea kite (TUSK) systems are an emerging technology which can extract ocean current energy. TUSK systems consist of a rigid-winged kite, or glider, moving in an ocean current. One proposed concept uses an extendable tether between the kite and a generator spool on a fixed or floating platform. As the kite moves across the current at high speeds, hydrodynamic forces on the kite tension the tether which extends to turn the generator spool. Since the TUSK system is a new technology, the process of bringing a TUSK design to commercial deployment is long and costly, and requires understanding of the underlying flow physics. The use of computational simulation has proven to be successful in reducing development costs for other technologies. Currently, almost all computational tools for analysis of TUSK systems are based on linearized hydrodynamic equations in place of the full Navier-Stokes equations. In this dissertation, the development of a novel computational tool for simulation of TUSK systems is described. The numerical tool models the flow field in a moving three-dimensional domain near the rigid undersea kite wing. A two-step projection method along with Open Multi-Processing (OpenMP) on a regular structured grid is employed to solve the flow equations. In order to track the rigid kite, which is a rectangular planform wing with a NACA-0012 airfoil, an immersed boundary method is used. A slip boundary condition is imposed at the kite interface to decrease the computational run- time while accurately estimating the kite lift and drag forces. A PID control method is also used to adjust the kite pitch, roll and yaw angles during power (tether reel-out) and retraction (reel-in) phases to obtain desired kite trajectories. A baseline simulation study of a full-scale TUSK wing is conducted. The simulation captures the expected cross-current, figure-8 motions during a kite reel-out phase where the tether length increases and power is generated. During the following reel-in phase the kite motion is along the tether, and kite hydrodynamic forces are reduced so that net positive power is produced. Kite trajectories, hydrodynamic forces, vorticity contours near the kite, kite tether tension and output power are determined and analyzed. The performance and accuracy of the simulations are assessed through comparison to theoretical estimations for kite power systems. The effect of varying the tether (and kite) velocity during the retraction phase is studied. The optimum condition for the tether velocity is observed during reel-in phase to increase the net power of a cycle. The results match theoretical predictions for tethered wind energy systems. Moreover, the effect of the tether drag on the kite motion and resulting power output is investigated and compared with the results of the baseline simulation. The kite drag coefficient increases by 25% while the effect of the tether drag is included into the baseline simulation. It affects the trajectory and the velocity of the kite. However, it has a small effect on the power generation for the proposed concept of TUSK system.
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Dénes, Francisco Voeroes. "Taxonomia e distribuição dos gaviões do gênero Leptodon Sundevall, 1836 (Aves: Accipitridae)". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/41/41133/tde-22092009-150905/.
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O gavião-de-pescoço-branco Leptodon forbesi Swann, 1922, endêmico da Mata Atlântica do Centro Pernambuco, é uma espécie cujo status taxonômico ainda é controverso. Autores como Swann (1922 e 1945), Teixeira et al. (1987) e del Hoyo (1994) consideram a espécie como válida, enquanto que outros, como Grossman e Hamlet (1964), Brown e Amadon (1968), Blake (1977) e Sick (1994) optam por considerá-la como uma variante morfológica do gavião-de-cabeça-cinza L. cayanensis. As diagnoses tradicionais de L. forbesisão as coberteiras inferiores das asas, brancas ao invés de negro; píleo cinza; lados do pescoço brancos; ápice das escapulares, manto e rêmiges esbranquiçados; e a cauda com uma larga faixa branca (Swann 1945; Hellmayr e Conover 1949; Pinto 1964). O presente trabalho teve como objetivos estudar e descrever a variação morfológica e morfométrica de L. cayanensis, e testar a validade dos táxons componentes deste complexo, com especial atenção para o táxon L. forbesie sua distribuição geográfica. Foram analisados 128 espécimes do gênero Leptodon, provenientes do México até o estado do Rio Grande do Sul, Brasil. Dados morfométricos foram obtidos e analisados para se avaliar diferenças entre os sexos, o polimorfismo de coloração nas plumagens dos juvenis, e as subespécies propostas por Swann (1922) para L. cayanensis. Além disso, caracteres de plumagem também foram analisados para se testar a validade de L. forbesi. Concluiu-se que há dimorfismo sexual em L. cayanensis, sendo as fêmeas de maior porte (I); que ocorrem duas, e não três, fases de coloração nas plumagens juvenis de L. cayanensis (II); que as subespécies propostas por Swann (1922) para L. cayanensis não são válidas, sendo a variação geográfica do porte mais bem explicada por um gradiente em resposta ao módulo da latitude, como previsto pela Lei de Bergmann (III); e que a espécie L. forbesié um táxon válido, com base nos caracteres da coloração das penas coberteiras inferiores e da borda de ataque das asas, brancas em L. forbesie pretas em L. cayanensis, do contraste entre a coloração ventral das rêmiges, sendo as primárias escuras e as secundárias mais claras em L. forbesi, e da coloração das penas da região do pescoço, brancas em L. forbesie cinzas em L. cayanensis (IV). Desta forma, L. forbesi constitui mais uma espécie endêmica do Centro Pernambuco de Endemismo.The White-collared (or Forbes) Kite Leptodon forbesi Swann, 1922 is an endemic raptor of the Centro Pernambuco, the northernmost portion of the Atlantic Forest, in Northeastern Brazil, and its taxonomic status is still a case of controversy. It is considered a valid species by Swann (1922, 1954), Teixeira et al. (1987) and del Hoyo (1994), whereas Grossman and Hamlet (1964), Brown and Amadon (1968), Blake (1977) and Sick (1994) opt to consider it a morphological variant of the widespread Grey-headed Kite L. cayanensis. The traditional diagnoses of L. forbesiare the underwing coverts, white instead of black; grey pileum; white collar; white tip of quills, mantle and scapular feathers; and a wide white band on both sides of the tail (Swann 1945; Hellmayr and Conover 1949; Pinto 1964). The present study aims to analyse and describe the morphological and morphometrical variation in L. cayanensis, and to test the validity of taxa within the complex, with a special interest in L. forbesiand its geographical distribution. 128 specimes of the genus Leptodon, from Mexico to Southern Brazil, were studied. Morphometrical data was obtained and analysed to evaluate differences between sexes, colour polymorphism in the juvenile plumage, and the subspecies described by Swann (1922) for L. cayanensis. Plumage characters were also studied to test the validity of L. forbesi. We conclude that L. cayanensis shows sexual dimorphism, the females being larger (I); that there are two, not three, coloration morphs in the juvenile plumages of L. cayanensis (II); that the subspecies described by Swann (1922) for L. cayanensis are invalid, the geographical variation in size better explained as a response to latitude module, as predicted by Bergmanns Rule (III); and that the species L. forbesi is a valid taxon, based on the coloration of underwing and leading edge coverts, white in L. forbesi and black in L. cayanensis; on the coloration of the ventral side of the rêmiges, with a contrast between dark primaries and lighter secondaries in L. forbesi; and on the collar coloration, white in L. forbesiand grey in L. cayanensis (IV). Therefore, L. forbesi constitutes another endemic and endangered species of the Centro Pernambuco, in the Brazilian Atlantic Forest.
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Aziz, Imran. "Design of a High Altitude Wind Power Generation System". Thesis, Linköpings universitet, Maskinkonstruktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-104569.
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One of the key points to reduce the world dependence on fossil fuels and the emissions of greenhouse gases is the use of renewable energy sources. Recent studies showed that wind energy is a significant source of renewable energy which is capable to meet the global energy demands. However, such energy cannot be harvested by today’s technology, based on wind towers, which has nearly reached its economical and technological limits. The major part of the atmospheric wind is inaccessible to the conventional wind turbines and wind at higher altitude is the major source of potential energy which has not been fully exploited yet. The thesis paper has presented a study aimed to devise a new class of wind generator based on extracting energy from high altitude wind.A brief theoretical study is presented to evaluate the potential of an innovative high altitude wind power technology which exploits a tethered airfoil to extract energy from wind at higher altitude. Among the various concepts proposed over last few decades, a kite power system with a single kite is selected for the design purpose.The designed ground station is an improvisation over existing prototypes with an energy reservoir for having a continuous power output. A flywheel is used as the energy storage system which stores the extra energy during traction phases and supplies it during recovery phases and thus giving a continuous power generation regardless of the kite’s motion and keeping the rotor speed in a permissible range defined by the design constraints. Manufacturability of the structure, availability of the components, safety and maintenance criteria have been taken into account while building the ground station CAD model.A dynamic simulation model is developed to investigate the power transmission system of the kite power unit which reflects the torque, speed and power behaviour of the modelled ground station driveline. The functionality of the designed model for the selected concept is tested with several numerical and graphical examples.
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Kitze, Bernd [Verfasser]. "Die Spezifität der systemischen und intrathekalen Immunantwort bei der Infektion mit dem humanen T-lymphotropen Virus 1 (HTLV-1) / Bernd Kitze". Aachen : Shaker, 2004. http://d-nb.info/117053757X/34.
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Bleckmann, Elisa [Verfasser], Michael [Akademischer Betreuer] Quintel, Bernd [Akademischer Betreuer] Kitze e Martin [Akademischer Betreuer] Oppermann. "Inzidenz und Gründe für einen schwierigen Atemweg auf einer operativen Intensivstation / Elisa Bleckmann. Gutachter: Bernd Kitze ; Martin Oppermann. Betreuer: Michael Quintel". Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2013. http://d-nb.info/1044361433/34.
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Behrel, Morgan. "Investigation of kites for auxiliary ship propulsion : experimental set-up, trials, data analysis and kite specs novel identification approach". Thesis, Brest, 2017. http://www.theses.fr/2017BRES0132.
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Cette thèse s’inscrit dans le programme de recherche beyond the sea® visant à développer la traction de navire de commerce par des kites géants. Le but est d’utiliser l’énergie du vent, et ainsi de réduire la consommation de carburant des navires et réduire les émissions polluantes. Un tel projet demande de nombreux développements et actions scientifiques, en particulier pour prédire le comportement des cerfs-volants géants et des navires associés. Pour cela des modèles sont développés, mais ces modèles doivent être confrontés à des mesures pour en estimer la validité. Cette thèse a donc pour objectif de mesurer les interactions entre le kite et le navire, à une échelle limitée par rapports aux navires visés par le programme global. Des mesures ont donc été réalisées sur un navire de pêche de 13 m, puis sur un bateau expérimental de 6 m spécialement conçu à cet effet. De plus, des mesures ont aussi été menées à terre pour évaluer uniquement les performances du kite. Chacune de ces campagnes expérimentales mettait en oeuvre un dispositif de mesure complexe, ainsi qu’un système automatique de contrôle du vol du kite. En plus de fournir des données de qualité à destination de la science, les outils développés au cours de cette étude peuvent être utilisés directement par les partenaires industriels du projet beyond the sea®This study is part of the research program beyond the sea® aiming to develop kites as auxiliary propulsion devices for ships. The goal is to use the energy of the wind to save fuel and reduce harmful emissions. Such a project needs numerous developments and scientific actions, particularly to model the behavior of giant kites and associated ships. However these models must be compared to measurements to assess their validity. This study is then focus on the measurements of the interaction between kites and ships, at a limited scale in comparison to the real scope of the project. Thus measurement campaigns were carried out on a 13-meter long trawler, and on a 6-meter long experimental platform specifically designed. Another experimental campaign was also carried out onshore to assess the aerodynamic specs of the kite. Each of these three campaigns was based on a complex experimental set-up, including an automatic kite control system. In addition to provide a valuable data set for further scientific analyses, this study provided also tools which can be used by the industrial partners of the beyond the sea project®
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Vummannagari, Akshay. "VERILOG DESIGN AND FPGA PROTOTYPE OF A NANOCONTROLLER SYSTEM". UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/20.
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Many new fabrication technologies, from nanotechnology and MEMS to printed organic semiconductors, center on constructing arrays of large numbers of sensors, actuators, or other devices on a single substrate. The utility of such an array could be greatly enhanced if each device could be managed by a programmable controller and all of these controllers could coordinate their actions as a massively-parallel computer. Kentucky Architecture nanocontroller array with very low per controller circuit complexity can provide efficient control of nanotechnology devices.
This thesis provides a detailed description of the control hierarchy of a digital system needed to build "nanocontrollers" suitable for controlling millions of devices on a single chip. A Verilog design and FPGA prototype of a nanocontroller system is provided to meet the constraints associated with a massively-parallel programmable controller system.
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Barros, Sandra. "Qual a melhor abordagem terapêutica para o tratamento do pé equino-varus-aductus em bebés? – uma revisão da literatura". Bachelor's thesis, [s.n.], 2020. http://hdl.handle.net/10284/9290.
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Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciada em FisioterapiaIntrodução: o Pé Equino-Varus-Aductus, (PEA), é uma deformidade do pé, de etiologia desconhecida, detetada durante a gestação ou logo após o nascimento. O objetivo principal do tratamento é providenciar uma correção de todos os componentes da deformidade, sem necessidade de intervenção cirúrgica, e ter um pé totalmente funcional e indolor. Objetivo: avaliar a melhor abordagem terapêutica no tratamento do Pé Equino-Varus- Aducutus em bebés. Metodologia: A pesquisa foi realizada nas bases de dados Pubmed, PEDro e Science Direct, incluindo artigos randomizados controlados, artigos de livre acesso, com texto integral disponível, realizados em humanos, cuja amostra fosse composta por bebés com idades compreendidas entre os 0-2 anos. Resultados: 113 artigos foram encontrados, dos quais 5 foram incluídos, de acordo com os critérios de inclusão. Conclusão: Atualmente a melhor abordagem terapeutica para o tratamento do PEA é o método de Ponseti.
Introduction: Clubfootis a foot deformity, of unknown etiology, detected during pregnancy or shortly after birth. The main objective of the treatment is to provide a correction of all components of the deformity, without the need for surgical intervention, and to have a fully functional and painless foot. Objective: to identify randomized controlled studies that evaluate the best therapeutic approach for treating Clubfoot. Methodology: The research was carried out in the Pubmed, PEDro and Science Direct databases, including randomized controlled articles, articles of free access, with full text available, performed in humans, whose sample was composed of babies aged 0-2 years. Results: 113 articles were found, of which 5 were included, according to the inclusion criteria. Conclusion: Currently, the best therapeutic approach for the treatment of Clubfoot is the Ponseti Method.
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