Dissertations / Theses: 'PANDA'

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Kocmanová, Michaela. "Panda a panda." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-410028.

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This diploma thesis presents a project documentation for construction of a zoo pavilion with a restaurant. The structure has to be designed in compliance with regulations for buildings with almost zero energy consumption. Its construction site is located within the existing compound of Prague’s zoo on plot no. 1491/1. The pavilion is proposed to house giant pandas. The building has three floors- one underground and two above. It is covered by a flat green roof. In terms of circulation, the structure is composed from two parts. The first one is formed by premises for the pandas, including necessary facilities for their wellbeing and their breeding; and the second part is visitors’ part, including restaurant, gift shop and amenities. The building is enclosed by two exterior expositions for pandas which are connected with the interior exposition premises by two ramps- tunnels. There is a roof terrace adjacent to the restaurant for visitors to enjoy the view of pandas in their exterior grounds. The vertical structure of the pavilion for giant pandas is a combination of load bearing brick walls and cast-in-place concrete walls- the underground floor and the ground floor is formed by the cast-in-place concrete walls and the upper floor is formed by the brick walls made out of autoclaved aerated concrete blocks. The horizontal structures are formed by prestressed concreted floor panels or in the case of the upper floor by cast-in-place reinforced concrete slabs.

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Kersey, David C. "Reproductive and adrenal endocrinology of the giant panda (Ailuropoda melanoleuca)." Fairfax, VA : George Mason University, 2008. http://hdl.handle.net/1920/3428.

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Thesis (Ph.D.)--George Mason University, 2008.
Vita: p. 180. Thesis director: Thomas C. Wood. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Environmental Science and Public Policy. Title from PDF t.p. (viewed Mar. 17, 2009). Includes bibliographical references (p. 156-179). Also issued in print.

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3

Huang, Kefan. "Shaping an Iconic Species : From the giant panda to the red panda and the Tibetan antelope." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-413329.

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This thesis is based and developed on the ambiguous and open conception, iconic species, which reveals the relationship between human society and non-human species that goes be- yond its biological status. From the case of the giant panda, I attempt to deconstruct the shap- ing process of an iconic species from multiple perspectives, which includes how a specific cultural context, or a specific historical period contributes to the shaping process and how the government and the public diverge or even clash around the shaping process. Then, I introduce my fieldwork where I through observing both giant pandas and red pandas in the exhibition centres called panda bases to analyse the encountering an iconic species in reality and their different influences on public awareness of the wildlife conservation. I also attempt to explore the various representative forms of an iconic species such as the Tibetan antelope ranging from the mascot to the film and follow the changes of its symbolic meanings in different forms. In conclusion, the thesis is aimed to reflect the hybrid features of the iconic species and pro- vide in-depth interpretation of the endless interactions between the human beings and other species.

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Nyberg, Jakob. "Panda Cloud System Management Stjärna Fyrkant Umeå." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105411.

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Panda Cloud Systems Management (PCSM) is a cloud-based system for monitoring, inventorying and managing computers, servers and networks. Stjarna Fyrkant started its IT-department in August 2014 where they manage for Stjarna Fyrkants computers and networks but also other companies as IT consultants. They have chosen to use PCSM to manage and to monitor these networks. The project was started because Stjarna Fyrkant wants a better insight of the system as they have gone through with the basics of it. They have chosen four areas where they wants to know more about and these are monitoring of computers and servers, SNMP for monitoring other equipment, automated processes such as updating programs and Windows automatically and for Mobile Management (MDM) to manage and monitor iPhones. To make this happen I was given login information to PCSM, two computers and an iPhone to test PCSM and its other functionalities for what Stjarna Fyrkant want to accomplish. For monitors the report will go through about which monitor that exists in the store and in PCSM and later assign these to two groups for monitoring the servers and clients. Then how to monitor other devices via SNMP and how this was applied to the devices that Stjarna Fyrkant has, such as printers. However, this didn’t work for all devices. For maintenance of computers the report analyzes how to keep important updates for programs like Java and .NET but also for Windows. Additionally it was looked into how to remove unnecessary files found on the computers, such as the temporary files. For MDM the report looks in to which functionalities that exists and these were later tested for an iPhone. These functions worked surprisingly fast when it took only a few seconds for them to apply. There were plans to create a product sheet for companies of these features, but this was handed to someone else with more knowledge for design such towards companies.

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Serneguet, Sorli Alvaro. "A multichannel digitizer for the PANDA experiment." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-229578.

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The PANDA Experiment will be one of the future experiments at the Facility for Antiproton and ion Research (FAIR), at Darmstadt, Germany. In the experiment, a stream of frozen hydrogen pellets will traverse vertically an antiproton beam circulating in the accelerator. Collisions of antiproton projectiles with frozen hydrogen pellets will lead to the generation of new particles, which in turn will be measured in the PANDA detector facility. The aim of this thesis is to develop a readout firmware for an ADC (Analog to Digital Converter) prototype, which will be used in the PANDA detector to gather all the necessary information from the antiproton-proton collisions. The firmware takes out interesting parameters of the pulse produced by the collision like amplitude, integral, pedestal or arrival time. The work will include algorithms for pulse recognition, data buffering, data formatting and readout using a Gigabit Transceiver (GTP). Big efforts have been put to achieve a very efficient utilization of the resources and to minimize the latency.

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Yu-Shan, Chevez Abril Victoria. "Response of Flooded Asphalt Pavement using PANDA." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/96521.

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Moisture damage is one of the major causes of deterioration of pavements. An example is the damage caused by flooding. While the effects of pore water pressure in pavement have been studied using finite element modeling, few of the models consider a realistic moving tire and the viscoelastic behavior of the asphalt layer. Consequently, a three-dimensional finite element simulation based on Biot consolidation theory and Schapery's non-linear viscoelasticity model, was developed to accurately simulate and analyze the detrimental effects of saturated layers in asphalt pavements. In addition, a parametric study is conducted to analyze the response of pavements with varying surface and base thickness, base and subgrade permeability, and vehicle speeds under different level of saturation. The results indicate that the effects of pore water pressure be considered in the design of pavements in flood-prone areas and in the proposal of flood management plans. Ultimately, the implementation of a "flood resilient" asphalt pavement could be effective in reducing the cost of road restoration and repair in flood-prone areas.
Master of Science
Moisture damage is one of the major causes of deterioration of pavements. An example is the damage caused by flooding. While the effects of pore water pressure in pavement have been studied using finite element modeling, few of the models have accurately modeled the behavior of the asphalt concrete and have not considered the realistic loading conditions. Consequently, a three-dimensional finite element simulation was developed to accurately simulate and analyze the detrimental effects of saturated layers in asphalt pavements. In addition, a parametric study is conducted to analyze the response of pavements with varying surface and base thickness, base and subgrade permeability, and vehicle speeds under different level of saturation. The results indicate that the effects of pore water pressure be considered in the design of pavements in flood-prone areas and in the proposal of flood management plans. Ultimately, the implementation of a "flood resilient" asphalt pavement could be effective in reducing the cost of road restoration and repair in flood-prone areas.

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Ma, Binsong. "Simulation of electromagnetic channels for PANDA@FAIR." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112234/document.

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Le multi-détecteur PANDA (antiProton ANnihilation at DArmstadt) équipera l’anneau de stockage d’antiprotons du complexe d’accélérateurs FAIR (Facility for Antiproton and Ion Research), en construction à Darmstadt et dont les premiers faisceaux sont prévus en 2019. L’expérience cible fixe PANDA est un outil du futur pour la physique hadronique. Avec PANDA, on peut étudier par exemple la spectroscopie des mésons, rechercher de nouveaux états de la matière, comme les boules de glue et les hybrides, étudier la spectroscopie des baryons charmés et multi-étranges, les hypernoyaux, les hadrons dans la matière nucléaire. Les réactions d’annihilation antiproton-proton permettent aussi d’étudier la structure du nucléon, en particulier en utilisant les canaux électromagnétiques de production de paires électron-positron, qui constituent l’objet d’étude de cette thèse. Un problème majeur de l’étude des canaux électromagnétiques, est le bruit de fond hadronique, qui est au moins six ordres de grandeur plus grand que le signal et qui nécessite une excellente identification de particules et une bonne résolution en impulsion. Or, la reconstruction de l’impulsion des électrons et positrons est dégradée par l’émission de photons de Bremsstrahlung le long de leur trace. Dans la première partie de la thèse, j’ai étudié ce problème et développé une méthode, basée sur une correction de l’impulsion des électrons et positrons événement par événement, en utilisant la détection des photons de Bremsstrahlung dans le calorimètre électromagnétique. Cette méthode, qui a été intégrée dans le code de reconstruction officiel de PANDA, PANDAroot, permet une amélioration très significative de la résolution en impulsion des électrons dont peuvent bénéficier toutes les études de canaux de production de paires électron-positron.Dans la deuxième partie, j’ai effectué une étude de faisabilité de la mesure de la réaction antiproton proton → J/Ψ π⁰ dans un modèle utilisant des TDAs (Transition Distribution Amplitudes) pion-nucléon. Les TDAs sont des objets non-perturbatifs qui décrivent la transition entre deux particules différentes. Par exemple, les TDAs pion-nucléon donnent des informations sur les composantes pioniques dans la fonction d’onde du nucléon. Pour cette étude, j’ai utilisé le modèle de TDA pour créer un générateur d’événements, puis j’ai étudié les capacités de réjection du bruit de fond hadronique. L’amélioration de l’efficacité du signal, due à la méthode de correction de Bremsstrahlung a pu aussi être quantifiée. Cette étude pourra être utilisée pour une proposition d’expérience pour PANDA
The multi-purpose detector PANDA (antiProton Annihilation at Darmstadt) will be built at the antiproton storage ring of the FAIR accelerator complex that is under construction in Darmstadt and is expected to provide its first beam in 2019. The fixed target experiment PANDA is a state of the art hadronic physics detector. With PANDA, one can explore a wide range of topics including meson spectroscopy, search for new states of matter such as glue balls and hybrids, charmed and multi-strange baryon spectroscopy, hyper-nuclei, and properties of hadrons in nuclei. Proton antiproton annihilation reactions will also allow to study the structure of nucleons, in particular by exploiting the electromagnetic channel of electron-positron pair production which is the subject of this thesis.One major problem with studies of electromagnetic channels is the hadronic background with cross-sections at least six orders of magnitude larger than the signal, requiring excellent particle identification and good momentum resolution. However the momentum reconstruction for electrons and positrons is degraded due to the emission of Bremsstrahlung photons along their path. In the first part of this thesis, I studied this problem and developed a method based on the correction of the momentum of electrons and positrons event by event, using Bremsstrahlung photons detected in the electromagnetic calorimeter. This method, which has been integrated into PANDAroot, the official PANDA reconstruction code, provides a significant improvement of momentum resolution for electrons, and will be exploitable by any measurement with electron-positron pair in the exit channel.In the second part, I performed a feasibility study of measuring the reaction antiproton p →J/Ψ π⁰ using predictions from a model based on pion-nucleon TDAs (Transition Distribution Amplitudes). TDAs are non-perturbative objects that describe the transition between two particles of different nature. For example, pion-nucleon TDAs contain information about the pionic components in the nucleon's wave function. For this study, I relied on the TDA model to create an event generator, and studied the capability to reject hadronic background. The improvement of the efficiency for the signal due to the Bremsstrahlung correction method was quantified. This study can be used as basis for a proposal of an experiment with PANDA

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Lyon, Lauren M. "Niche Modeling for the Giant Panda, Ailuropoda melanoleuca, and the Original Panda, Ailurus fulgens: Habitat Preferences and Evolutionary Consequences." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etd/3234.

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The well-known symbol for conservation, the giant panda bear, and the original red panda have been forced into remote habitats due to anthropogenic disturbance, making ecological study difficult. Therefore the first known species distribution model was created to predict the most likely areas of occurrence within the known range of these elusive animals. These models were then projected onto North America and evaluated against existing breeding programs. Additionally, the close proximity of the Gray Fossil Site and the discovery of the most complete fossil red panda specimens in the world allowed ecomorphological comparisons between the modern red panda, Ailurus fulgens and the fossil red panda, Pristinailurus bristoli. Spatial data and morphometric results from this study will aid conservation work and breeding programs globally.

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Kelling, Angela S. "Simple visual discrimination training of the giant panda (Ailuropoda melanoleuca)." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04072004-180031/unrestricted/kelling%5Fangela%5Fs%5F200312%5Fms.pdf.

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Perdue, Bonnie Marie. "Spatial memory recall in the giant panda (ailuropoda melanoleuca)." Thesis, Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26482.

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The giant panda (Ailuropoda melanoleuca) is an endangered species and many efforts are being made to ensure its survival, including numerous research studies. However, there has been little investigation of spatial memory in the giant panda. Spatial memory is an important mechanism for survival in the wild, allowing an animal to find and remember the location of food, mates, den sites and avoid predators. Memory assessment in non-human species typically involves the use of recognition, as opposed to recall tasks. The current study tested spatial memory recall in 1.1 giant pandas using a delayed response memory task. The design required a delayed response to a previously lighted location, with varying lengths of delay between the observation phase and the test phase. The male subject reached criterion at 2-, 3-, 4-, 5-, 6-, and 10-second delays. The female subject reached criterion at 2-, 3-, 4-, 5-, 6-, 10-, and 15-second delays. The results support the hypothesis that giant pandas have working memory recall ability for spatial location.

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Benz-Navarrete, Miguel-Angel. "Mesures dynamiques lors du battage du pénétromètre PANDA 2." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2009. http://tel.archives-ouvertes.fr/tel-00725564.

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Par le caractère hétérogène des sols présents en surface, le dimensionnement et la construction de fondations demandent une bonne connaissance du comportement mécanique du sol et de sa variabilité spatiale. Les essais in-situ constituent dans ce domaine des outils précieux et parmi eux, les plus couramment utilisés à travers le monde, les pénétromètres dynamiques représentent une part prépondérante. Toutefois, ils ne permettent d'obtenir que quelques informations sur le sol, plus particulièrement la résistance de pointe. Par ailleurs, la réduction importante en taille et en coût des capteurs et de l'instrumentation associée permet à l'heure actuelle de mesurer des phénomènes physiques ayant lieu dans des conditions de travail singulières, inconcevables il y a quelques années. C'est dans cette esprit qu'a été développé ce travail à partir de l'essai de pénétration dynamique Panda. L'objectif de ce travail étant de concevoir et de développer de manière simple et économique un pénétromètre dynamique équipé de différents capteurs permettant d'une part d'obtenir la résistance de pointe et d'autre part de déterminer des paramètres supplémentaires gouvernant le comportement en déformation du sol mis en jeu pendant l'enfoncement du cône. Pour ce faire nous avons retenu une méthodologie de travail pluridisciplinaire : analytique, expérimentale et numérique MED.

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Kliemt, Ralf [Verfasser]. "Simulations with the Panda Micro-Vertex-Detector / Ralf Kliemt." Bonn : Universitäts- und Landesbibliothek Bonn, 2014. http://d-nb.info/1077387008/34.

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Thomé, Erik. "Multi-Strange and Charmed Antihyperon-Hyperon Physics for PANDA." Doctoral thesis, Uppsala universitet, Kärnfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-182450.

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The prospects of studying multi-strange and charmed antihyperon-hyperon physics and CP violation in hyperon decays in the upcoming PANDA experiment at FAIR, Germany, have been studied in this thesis. The angular dependence on polarisation parameters in the decay of the spin 3/2 Omega hyperon was calculated using the density matrix formalism. Expressions for the angular distributions in the Ω -> ΛK and the subsequent Λ -> pπ decays were derived. Simulations were performed for the pbar p -> Ξ+ Ξ-, pbar p -> Ω+Ω- and pbar p -> Λc-Λc+ reactions. Special attention was given to the reconstruction of spin variables. It is shown that PANDA will register tens of events per second for the pbar p -> Ξ+Ξ- reaction. This should be compared to the previously existing data of a handfull of events. For the other two reactions the event rates will be lower, but still reasonably high. This will be the first measurements of these reactions. It is shown that spin variables can be reconstructed in all three reactions for all production angles of the hyperons. Simulations concerning the possibility to measure CP violation parameters in hyperon decays were also made for the reactions pbar p- > Λbar Λ and pbar p -> Ξ+Ξ-. It was found that false signals from detector asymmetries disappears if no particle identification criterium is used and the analysis is restricted to events were the hyperon decays occur close to the beam axis. The effect of the magnetic field in the PANDA detector on the measurement of hyperon spin variables was investigated for the case of pbar p -> Λbar Λ. The effect was observed to be small for polarisation and negligible for spin correlations.

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Panda, Emila [Verfasser]. "The initial oxidation of Al-Mg alloys / Emila Panda." Stuttgart : Max-Planck-Inst. für Metallforschung, 2009. http://d-nb.info/1000621103/34.

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Kliemt, Ralf [Verfasser]. "Simulations with the Panda Micro-Vertex-Detector / Ralf Kliemt." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1045276472/34.

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Benz-Navarrete, Miguel Angel. "Mesures dynamiques lors du battage du pénétromètre PANDA 2." Clermont-Ferrand 2, 2009. http://www.theses.fr/2009CLF21930.

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Par le caractère hétérogène des sols présents en surface, le dimensionnement et la construction de fondations demandent une bonne connaissance du comportement mécanique du sol et de sa variabilité spatiale. Les essais in-situ constituent dans ce domaine des outils précieux et parmi eux, les plus couramment utilisés à travers le monde, les pénétromètres dynamiques représentent une part prépondérante. Toutefois, ils ne permettent d'obtenir que quelques informations sur le sol, plus particulièrement la résistance de pointe. Par ailleurs, la réduction importante en taille et en coût des capteurs et de l'instrumentation associée permet à l'heure actuelle de mesurer des phénomènes physiques ayant lieu dans des conditions de travail singulières, inconcevables il y a quelques années. C'est dans cette esprit qu'a été développé ce travail à partir de l'essai de pénétration dynamique Panda. L'objectif de ce travail étant de concevoir et de développer de manière simple et économique un pénétromètre dynamique équipé de différents capteurs permettant d'une part d'obtenir la résistance de pointe et d'autre part de déterminer des paramètres supplémentaires gouvernant le comportement en déformation du sol mis en jeu pendant l'enfoncement du cône. Pour ce faire nous avons retenu une méthodologie de travail pluridisciplinaire : analytique, expérimentale et numérique MED

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Steinen, Marcell [Verfasser]. "Feasibility studies for the high precision X-ray spectroscopy of heavy Ξ− hyperatoms at PANDA using the PANda GErmanium Array PANGEA / Marcell Steinen." Mainz : Universitätsbibliothek Mainz, 2020. http://d-nb.info/1211846660/34.

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Nordhage, Örjan. "On a Hydrogen Pellet Target for Antiproton Physics with PANDA." Doctoral thesis, Uppsala University, Department of Nuclear and Particle Physics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7137.

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The PANDA experiment is a part of the future FAIR accelerator facility and will study the strong interaction by detecting the reaction products from antiproton-proton annihilations in a near full solid-angle configuration. One option for the internal proton target in PANDA is frozen micro-spheres of hydrogen, so-called pellets.

Such a pellet target is interesting because of the unique characteristics it offers; the high target thickness, the small interaction volume, the minimal gas load on the vacuum system, and the possibility of tracking individual pellets. Nevertheless, it is possible to allocate the bulky equipment needed to produce the pellets at a few meters away from the beam. This way particle detectors can be located close and almost fully around the interaction point.

This thesis is devoted to the optimization of a pellet target. To perform measurements, a Pellet-Test Station was built at The Svedberg Laboratory, Uppsala. For the first time, experimental results show the pellet distribution in space and time, and in addition, the vacuum along the pellet pipes. Furthermore, dedicated measurements carried out at CELSIUS/WASA demonstrate the existence of pellet heating as a result of beam-target interactions.

In performing calculations, the potential problems with pellet heating at PANDA are outlined. Moreover, to look at the consequences for the desired physics, a reaction involving short-lived D-mesons has been used to show the advantages of pellets compared to a more spacious target.

In conclusion, these studies lead to a deeper understanding of the pellet properties, which makes it possible to suggest future improvements, such as cooling with no vibrations.

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Nordhage, Örjan. "On a hydrogen pellet target for antiproton physics with PANDA /." Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7137.

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Löfgren, Johan. "Vacuum calculations for hydrogen pellet targets at WASA and PANDA." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-222973.

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We have performed calculations in order to evaluate the vacuum conditions for the twohadron physics experiments WASA and PANDA. WASA is an ongoing experiment whereasPANDA is an experiment under construction. There is an interest in improving the vacuumconditions for these experiments in order to reduce background interactions. The experimentswere modelled as longitudinal conductance limited vacuum systems in the molecular flowregime and the calculations were performed with VAKLOOP. The approach was to fit amodel of WASA to measurement data and then extend this model to PANDA in order tomake predictions. The model of WASA was successful in the sense that it reproduced themeasurement data within the measurement uncertainty. The model of PANDA showed somediscrepancies in comparison with calculations from the Target Technical Design Report ofPANDA, but an overall similar pressure profile is obtained. Finally, we have considered a wayof improving the conditions at PANDA by including extra pumping capacity in the system,concluding that lowering the pressure at the interaction point for PANDA is challenging. Anoutlook for further modelling is to make a more detailed comparison between our model andthe one from the Target Technical Design Report.

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Potužáková, Karolína. "Změna v přístupech v SEO po updatech Penguin a Panda." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-198614.

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Search engine algorithms are constantly improved in order to provide the highest quality and most relevant results for the user. Google algorithm updates called Panda and Penguin have recently been one of the most significant and many websites that use black hat SEO techniques were hit by them. Nowadays, using this search optimization's techniques raises the risk of Google penalty, which in most of the cases cause decrease in traffic from organic search. The aim of this thesis is to describe techniques of search engine optimization (SEO) and their possible impact on website's ranking. The thesis also aims to verify whether Penguin and Panda updates have the impact on websites for which the methods of black hat SEO have been used and specify the result of this impact. In the theoretical part of this thesis it is described function of search engines Seznam.cz and Google, their algorithm change in history and possible factors on which the ranking score is based. Briefly are also described tools, which can be used to identify and analyze possible causes of penalization. After reading this thesis, the reader will have a basic orientation in search engine optimization methods and their appropriate use. Also, he will be able to recognize possible causes of Google penalty and propose an appropriate strategy for its removal.

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Morisset, Natalie Carleton University Dissertation Geology. "Stableisotope and radioisotope geochemistry of the Panda Hill carbonatite, Tanzania." Ottawa, 1992.

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Pantaleoni, Marco <1995&gt. "Un ponte finanziario tra Italia e Cina: i Panda Bonds." Master's Degree Thesis, Università Ca' Foscari Venezia, 2019. http://hdl.handle.net/10579/16083.

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Negli ultimi anni, in Cina, è andata diffondendosi l'utilizzo di particolari strumenti finanziari obbligazionari: i Panda Bonds. Ultimamente, in seguito al memorandum firmato a marzo 2019 tra Italia e Cina, è stata portata all'attenzione della cronaca nazionale l'esistenza di tali strumenti. Infatti, con questo accordo, si prevede l'emissione da parte della Cassa Depositi e Prestiti di un quantitativo pari a 5 miliardi di renminbi di queste obbligazioni. L'obiettivo di questa tesi è cercare di individuare i benefici che tale operazione finanziaria comporta e allo stesso tempo analizzare tutti i rischi che vengono assorbiti dall' istituzione finanziaria italiana (CDP) e che possono pesare sulla sua operatività di lungo periodo.

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Sandhaus, Estelle Ann. "Variation of Feeding Regimes: Effects on Giant Panda (Ailuropoda melanoleuca) Behavior." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7617.

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Giant pandas in captivity are typically fed discrete amounts of highly concentrated food on a fixed time schedule, in addition to limited amounts of fresh bamboo throughout the day. In response to informal observations that these animals engage in a number of undesirable behaviors just prior to the predictable feeding of concentrated meals, we examined the existing feeding regime at the Research Base of Giant Panda Breeding in Chengdu, Peoples Republic of China. We sought to determine whether undesirable behaviors were occurring more frequently before the delivery of meals than at other times of day and whether modified feeding regimes would result in a more species-appropriate activity budget overall. As predicted, female giant pandas spent significantly more time engaged in door-directed/human-oriented behavior, stereotypic behavior, and non-stereotypic locomotion in the 30-minute periods prior to the feeding of concentrated meals. When placed on a modified feeding schedule in which frequency of bamboo provisioning was increased (total amount was held constant), significant differences were not found between study phases for the above-mentioned behaviors of interest, though a visual trend towards a decline in stereotypic behavior during the experimental phase was noted. Male pandas, when placed on a less predictable feeding schedule, did not exhibit significant behavioral differences in behaviors of interest between experimental phases or observation periods. These findings may be attributable in part to the low power inherent in the small sample size. However, visual trends that may be indicative of feeding anticipatory activity (FAA) were apparent. It appears that giant pandas, like many other animal species cited in the literature, are sensitive to periodic feeding regimes, though it is less clear as to which regime modifications will prove most beneficial.

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Snyder, Rebecca Jo. "A behavioral and hormonal study of giant Panda (Ailuropoda Melanoleuca) reproduction." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/29528.

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Cowie, Euan Niall. "Development of a prototype for the novel disc DIRC for PANDA." Thesis, University of Glasgow, 2013. http://theses.gla.ac.uk/4334/.

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The PANDA experiment is a planned experiment for the FAIR upgrade to GSI in Darmstadt, Germany. It aims to probe the nature of hadronic matter and the Strong nuclear force to unprecedented levels of accuracy and precision. A general purpose detector, covering 4-Pi solid angle, will reside on the High Energy Storage Ring (HESR) racetrack-type accelerator. The HESR will provide a beam of variable momentum anti-Protons which impinge upon a proton target internal to the PANDA detector. To fulfil the physics programme the detector will utilise two Cherenkov detectors based on the Detection of Internally Reflection Cherenkov radiation (DIRC) principle, one in a barrel configuration and one in an disc configuration. A proposed design for the disc configuration DIRC is the Focussing Lightguide Disc DIRC(FLDD). In addition to the novel geometry the FLDD proposes to use a unique hardware element to correct for the chromatic dispersion present in DIRC detectors. Lithium Fluoride was selected to correct for this dispersion and was found to reduce the angular spread resulting by a factor of ~4.7, in agreement with the predicted reduction. A full optical simulation of a prototype accurately reproduced all of the features observed at test beam. Therefore to perform the Pion/Kaon separation required for the PANDA physics programme the design needs a detector surface split into 64 channels or a resolution of 0.78125mm per pixel. Further study of the focussing lightguide element is required to access the full performance of the FLDD design.

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Sun, Pei. "The Effect of Early Rearing Experience on Adult Reproductive Behavior in Captive Giant Pandas and Spectacled Bears." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7618.

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The present study examined the relationship between early rearing experience and reproductive competence in captive adult giant pandas (Ailuropoda melanoleuca) and spectacled bears (Tremarctos ornatus). Life history information of 52 giant pandas and 34 spectacled bears were obtained from the International Studbook and by interviewing staff at institutions housing the subjects. The early rearing experience variables included duration of mother rearing, social access within 1-yr period following maternal separation, and birth origin. Correlation, Chi-square, and logistic regression analyses were used to analyze the data. Contrary to findings from studies with other animals, the results generally suggest that early rearing experience is not related to adult reproductive success in giant pandas and spectacled bears. Alternative explanation and limitation of the study were discussed; suggestions were made for future study.

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Tun, Hein Min. "Microbial community structure and function in the gut of giant panda (Ailuropoda melanoleuca)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/197106.

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Giant pandas are unique animals because of their digestive system is similar to carnivores but they have in fact adapted to a plant diet with bamboo as their main food source. According to fossils records, giant pandas were omnivorous approximately 7 million years ago, becoming almost vegetarian after 4.6 to 5 million years of evolution. However, their genome and anatomical structure do not favor bamboo digestion. For more than a decade, researchers have been questioning the underlying mechanism of their ability to digest bamboo. In 2010, the genome of giant panda was completed, which confirmed that their genome had no gene encoding for cellulolytic enzymes. Thus, the gut microbiota of giant panda, which has been hypothesized to play a key role in bamboo digestion, has garnered unprecedented attention. Researchers are also interested in the giant panda’s gut microbes due to their potential application in biomass conversion. In Chapters 2 and 3 of this thesis, the microbial catalog of the giant panda’s gut microbiota was characterized, showing possible age-related microbial dysbiosis. Moreover, the microbiota, both bacterial and fungal was highly individualized because very few operational taxonomic units were shared among the four pandas in this study. Novel homoacetogens were also identified in the giant panda using functional gene clone-library sequencing. Using metagenomic sequencing, I uncovered the first evidence of human and animal related viruses in the giant panda’s gut. In addition to the community structure, I also determined the metabolic pathways of the microbiome. From KEGG annotation, a metabolic pathway for both cellulose and hemicellulose metabolism was identified. Comparative metagenomic analysis indicated that the giant panda’s gut microbiome was taxonomically and functionally distinct from those in mammals. In Chapters 4 and 5, a total of 97 species of bacteria were isolated and identified using biochemical assays. Four of these bacteria showed powerful cellulolytic and hemicellulolytic activities on solid media. The gram-positive bacteria (HKUOP_BS) and the gram-negative bacteria (HKUOP_A14) were found to be rod shaped, facultative anaerobes that had the ability to powerfully hydrolyze both cellulose and hemicellulose using intracellular and extracellular enzymes respectively. In Chapter 6, I determined the complete genome of a cellulolytic bacterium, Klebsiella oxytoca HKUOPL1, from giant panda and further described the annotated virulence, drug resistant, functional and potential horizontal transferring genes. The phylogenomic tree indicated that K. oxytoca HKUOPL1 closely resembled the K. oxytoca KCTC 1686 strain commonly used in 2,3-butanediol production. In captive giant pandas, a mucous excretion episode usually occurs with mild to severe colic. To understand the host-microbial interactions during this episode, bacterial communities were compared between mucous excreta and normal feces. The shifts in community abundance (especially flooding of Clostridia) may be associated with the mucous excretion episode. This study provides a better understanding of the microbial community structure and function in the giant panda’s gut.
published_or_final_version
Biological Sciences
Doctoral
Doctor of Philosophy

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Jäkel, René. "Resolution Studies for the Micro Vertex Detector of the PANDA Experiment and the Reconstruction of Charmed Mesons for Specific Hadronic Channels." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-25497.

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The PANDA experiment is planned as part of the extended GSI facility FAIR to investigate hadronic reactions in antiproton-proton annihilations. An excellent beam quality and high luminosity is expected which allows the investigation of hadronic reactions such as the spectroscopy of the charmonium system. To ensure different studies of hadronic systems an universal detector is being designed, the PANDA detector. A high resolution Micro Vertex Detector (MVD), as part of the whole setup, is an important component of the track and vertex reconstruction. A mayor part of this work were simulation studies to investigate the resolution ability of the vertex detector. For this the development and implementation of reconstruction algorithms and their integration to the track and vertex reconstruction were an essential part to allow the detailed study of the resolution of the MVD and the whole apparatus under realistic assumptions. The track and vertex reconstruction ability of the detector is shown exemplarily for the channels antiproton-proton into two charged pions and into J/psi and photon. The expected hadronic background for physics observables requires a high selection power of the experimental setup, especially for the investigation of the charmonium system above the DD(bar) threshold. For this particular energy region no experimental data exist and the PANDA experiment can contribute to understand the binding of charmed mesonic systems. Charmonium states can decay to open-charm channels which provide a clear signature in the detector from the charged D-Meson decays. In this work the high selection ability of the experimental setup was investigated for two reaction channels. Under the assumption of an expected low reaction cross section the clear identification of the DD(bar) decay channel was shown, even for the presence of a huge hadronic background. This allows a clear identification of the DD(bar) decay channel and mayor background resources for this channel were discussed
Das PANDA Experiment wird Teil der geplanten Ausbaustufe FAIR als Erweiterung zur GSI und wird die Untersuchung von hadronischen Reaktionen in Antiproton-Proton Annihilationen ermöglichen. Durch die zu erwartende exzellente Strahlqualität und hohe Luminosität ergeben sich vielfältige Möglichkeiten zur Untersuchung von Hadronenwechselwirkungen, wie beispielsweise die genaue Spektroskopie des Charmoniumsystems. Um vielfältige Untersuchungen verschiedenster hadronischer Systeme zu gewährleisten, wurde der Aufbau eines universellen Detektors geplant, des PANDA Detektors. Dazu ist ein hochauflösender Vertexdetektor (MVD) eine wichtige Komponente, um im Zusammenspiel mit weiteren Detektorkomponenten zur Spur- und Vertexrekonstruktion beitragen zu können. Im Rahmen dieser Arbeit wurden detaillierte Simulationen durchgeführt, die das Auflösungsvermögen des Vertexdetektors charakterisieren, ganz besonders im Hinblick auf die Rekonstruktion verschiedener physikalischer Kanäle. Dafür war die Entwicklung und Implementierung von Algorithmen zur Rekonstruktion der zu erwartenden Detektordaten und deren Integration in den Spurfit zur Teilchenrekonstruktion eine Grundvoraussetzung. Dadurch ist es möglich das Auflösungsvermögen des MVD und des gesamten experimentellen Aufbaus unter realistischen Bedingungen zu testen und zu optimieren. Die Spur- und Vertexrekonstruktion wird anhand der Kanäle Antiproton-Proton nach zwei geladenen Pionen und nach J/Psi Photon evaluiert. Der zu erwartende hadronische Untergrund stellt hohe Anforderungen an die Selektionskraft des experimentellen Aufbaus, bezüglich der physikalischen Observablen, dar. Dies ist besonders für die Untersuchung des Charmoniumsystems oberhalb der DD(quer)-Schwelle von Bedeutung, wofür kaum experimentelle Untersuchungen vorliegen und der PANDA Detektor zukünftig einen entscheidenden Beitrag zum Verständnis gebundener mesonischer Systeme beitragen kann. Zuständen im Charmoniumsystem ist es erlaubt in Open-Charm-Kanäle zu zerfallen, die eine eindeutige experimentelle Signatur mittels der D-Zerfälle in geladene Teilchen im Detektor erlauben. Im Rahmen dieser Arbeit konnte anhand zweier grundlegender Reaktionen gezeigt werden, dass selbst unter ungünstigen Annahmen über den zu erwartenden Wirkungsquerschnitt, der noch nicht schwellennah vermessen wurde, das stark unterdrückte Signal gegenüber Untergrundereignissen hinreichend angereichert werden kann. Dies erlaubt eine klare Identifizierung des DD(quer)-Ausgangskanales, wobei die wesentlichen Untergrundbeiträge identifiziert und diskutiert werden

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Quagli, Tommaso [Verfasser]. "Hardware developments for the strip detector of the PANDA MVD / Tommaso Quagli." Gießen : Universitätsbibliothek, 2015. http://d-nb.info/1080120238/34.

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Grape, Sophie. "PWO Crystal Measurements and Simulation Studies of Anti-Hyperon Polarisation for PANDA." Licentiate thesis, Uppsala universitet, Kärnfysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-142861.

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The Gesellschaft für Schwerionenforschung (GSI) facility in Darmstadt, Germany, will be upgraded to accommodate a new generation of physics experiments. The future accelerator facility will be called FAIR and one of the experimentsat the site will be PANDA, which aims at performing hadron physics investigations by colliding anti-protons with protons. The licentiate thesis consistsof three sections related to PANDA. The first contains energy resolutionstudies of PbWO4 crystals, the second light yield uniformity studies of PbWO4 crystals and the third reconstruction of the lambda-bar-polarisation in the PANDA experiment. Two measurements of the energy resolution were performed at MAX-Lab in Lund, Sweden, with an array of 3x3 PbWO4 crystals using a tagged photon beam with energies between 19 and 56 MeV. For the April measurement, the crystals were cooled down to -15 degrees C and for the September measurement down to -25 degrees C. The measured relative energy resolution, $\sigma$ /E, is decreasing from approximately 12% at 20 MeV to 7% at 55 MeV. In the standard energy resolution expression $\sigma$ /E = a/ $\sqrt[]{E}$ $\oplus$ b/E $\oplus$ c, the three parameters a, b and c seem to be strongly correlated and thus difficult to determine independently over this relative small energy range. The value of a was therefore fixed to that one would expect from Poisson statistics of the light collection yield (50 phe/MeV) and the results from fits were $\sigma$ /E=0.45%/ $\sqrt[]{E_{GeV}}$ $\oplus$ 0.18%/EGeV $\oplus$ 8.63% and $\sigma$ /E = 0.45%/ $\sqrt[]{E_{GeV}}$ $\oplus$ 0.21%/EGeV $\oplus$ 6.12% for the April and September measurements, respectively. The data from the September measurement was also combined with previous data from MAMI for higher energies, ranging from approximately 64 to 715 MeV. The global fit over the whole range of energies gave an energy resolution expression of $\sigma$ /E = 1.6%/ $\sqrt[]{E_{GeV}}$ $\oplus$ 0.095%/EGeV $\oplus$ 2.1%. Light yield uniformity studies of five PbWO4 crystals, three tapered and two non-tapered ones, have also been performed. The tapered crystals delivered a light output which increased with increasing distance from the Photo Multiplier Tube (PM tube). Black tape was put on different sides of one tapered crystals, far from the PM tube to try to get a more constant uniformity prole. It was seen that the light output profile depends on the position of the tape. Generally, the steep increase in light output at large distances from the PM tube could be damped. The third part of the thesis concerns the reconstruction of the lambdabar polarisation in the reaction $pbar+p \rightarrow lambdabar + lambda$ . Events were generated using a modied generator from the PS185 experiment at LEAR. With a 100% polarisation perpendicular to the scattering plane, a polarisation of (99±1.8)% was reconstructed. Slight non-zero polarisations along the axis determined by the outgoing hyperon as well as the axis in the scattering plane, were also reconstructed. These were (4.1±2.1)% and (2.6±2.0)% respectively. From this investigation it was shown that the detector efficiency was not homogeneous and that slow pions are difficult to reconstruct.

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Bianco, Simone [Verfasser]. "Tracking and vertex reconstruction with the PANDA Micro-Vertex-Detector / Simone Bianco." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/104497155X/34.

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Schmidt, Mustafa Andre [Verfasser]. "Particle identification with the Endcap Disc DIRC for PANDA / Mustafa Andre Schmidt." Gießen : Universitätsbibliothek, 2018. http://d-nb.info/1153334860/34.

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Pérez, Andrade Gabriela. "Production of the Σ0-bar hyperon in the PANDA experiment at FAIR." Thesis, Uppsala universitet, Kärnfysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-375552.

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The PANDA experiment is one of the main pillars of the Facility for Antiproton and Ion Research (FAIR), currently under construction in Darmstadt, Germany. PANDA will be a fixed target experiment designed for the study of non-perturbative phenomena of the strong interaction. Strange hyperon production is governed by m(s) ~ 100 MeV, which corresponds to the confinement domain. Thus, hyperons are suitable probes in this energy region. This work is a simulation study focused on the feasibility of studying the production of Σ0-bar and Λ hyperons in the pbar p -> Σ0-bar Λ reaction with the PANDA detector. A 10^4 events sample simulated at p(beam) = 1.771 GeV/c is used to perform a single-tag (inclusive) and a double-tag (exclusive) event selection. From the former, it is concluded that the single-tag method does not provide with the clean signal required for spin observables extraction. In contrast, exclusive event selection provides with a signal reasonably clean from combinatorial background and completely clean from generic hadronic background events. A signal (Σ0-bar Λ) reconstruction efficiency of ε = 5.3 ± 0.2 % is obtained for exclusive event selection. The corresponding signal to background ratio is S/B(Total) ~ 6 and the significance value is ~ 21. In addition, an exclusive event selection is performed on a 10^4 events sample simulated at p_(beam) = 6 GeV/c. Almost all the generic hadronic background events are removed by the applied selection criteria. At this beam momentum, the obtained signal efficiency is ε = 6.1 ± 0.3%, the signal to total background ratio is S/B(Total) ~ 4 and the significance is ~22. Both efficiencies are smaller compared to a previous simulation study on this channel, but are large enough to enable a study of the exclusive production of the pbar p -> Σ0-bar Λ reaction at PANDA. The difference between the results of this thesis work and the previous work is attributed to the more realistic implementation of the signal production mechanism, as well as the detector and reconstruction algorithms.

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Borrami, Sina. "A control unit for a Digitizer System for the PANDA Electromagnetic Calorimeter." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-421560.

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PANDA is the next generation hadron physics detector under construction at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany to accurately detect and parameterize particles with kinetic energies from 1MeV to 8GeV. PANDA is a 4π detector and due to its unique shape, all the readout electronic from ADC modules, power supplies, and a controller unit is housed in the liquid-cooled crates mounted inside the detector. Therefore, the readout electronics are exposed to a high level of magnetic field and radiation. The controller unit as the critical component of the digitization system with adequate radiation resiliency governs the crate. The control unit manages power supplies, monitors the radiation damages of each ADC modules, offer a mechanism to re-program the ADC module firmware, and finally features a redundant communication for the crate over fiber optics. The purpose of this thesis is to study and design the controller unit hardware that meets the specification of the PANDA experiment.

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Marcks, von Würtemberg Klas. "Response of the PANDA electromagnetic calorimeter to photons with energies below 100 MeV." Licentiate thesis, Stockholms universitet, Fysikum, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-59190.

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Characteristics of the electromagnetic calorimeter of PANDA (anti-Proton ANnihilations at DArmstadt), one of the key experiments at FAIR, have been measured at the tagged photon beam facility at MAX-lab for 61 energies in the range 12-63 MeV. The tested detector array consisted of 5x5 PbWO4 (lead tungstate) crystals designed for the forward end-cap. The array was cooled to -25 ºC and read out with conventional photomultiplier tubes. The measured energy resolution, σ/E, (for example 6 % at 20 MeV) shows that the current design meets the criterion of PANDA. The array is now ready to be equipped with vacuum phototriods designed for the forward end-cap. As a part of the experiment, characteristics of the tagging spectrometer at MAX-lab were measured. This revealed a lowered performance in terms of resolution for low energies. A discrepancy between the nominal and the measured tagged energies was also discovered. Possible explanations to these observations are presented.

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Merle, Oliver [Verfasser]. "Development, design and optimization of a novel Endcap DIRC for PANDA / Oliver Merle." Gießen : Universitätsbibliothek, 2015. http://d-nb.info/1070168378/34.

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Ohlsson, Sophie. "Test and Developments of Crystals for a High-Resolution Electromagnetic Calorimeter for PANDA." Thesis, Uppsala universitet, Fysiska sektionen, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-142869.

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Boucher, Jérôme. "Feasibility studies of the pbar p -->pi0e+e- electromagnetic channel at PANDA." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00662455.

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The proton is described by the electric G_E and magnetic G_M form factors which characterise its internal structure. The way to measure the proton form factors consists in measuring the angular distribution of the e-p elastic scattering accessing the so-called Space-Like region where q^2<0. Using the crossed channel pbar p<-->e+e-, one accesses another kinematical region, the so-called Time-Like region where q^2>0. However, due to the pbar p<-->e+e- threshold q^2_{th}, only the kinematical domain q^2>q^2_{th}>0 is available. To access the unphysical region, one may use the pbar p --> pi0e+e- reaction where the pi0 takes away a part of the system energy allowing q^2 to be varied between q^2_{th} and almost 0. This thesis aims to show the feasibility of such measurements with the PANDA detector which will be installed on the antiproton ring at the FAIR facility at Darmstadt. To describe the pbar p --> pi0e+e- reaction, a Lagrangian based approach is developed. The 5-fold differential cross section is determined and related to linear combinations of hadronic tensors. Under the assumption of one nucleon exchange, the hadronic tensors are expressed in terms of the 2 complex proton electromagnetic form factors. An extraction method which provides an access to the proton electromagnetic form factor ratio R=|G_E|/|G_M| and for the first time in an unpolarized experiment to the cosine of the phase difference is developed. Such measurements have never been performed in the unphysical region. Extended simulations were performed to show how the ratio R and the cosine can be extracted from the positron angular distribution. Furthermore, a model is developed for the pbar p-->pi0pi+pi- background reaction considered as the most dangerous one. The background contribution can be reduced to the percent level or even less. The corresponding signal efficiency ranges from a few % to 30%. The precision on the determination of the ratio R and of the cosine is determined using the expected counting rates via Monte Carlo method. A part of this thesis is also dedicated to more technical work with the study of the prototype of the electromagnetic calorimeter and the determination of its resolution.

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Rosenbaum, Christoph [Verfasser]. "Optimization of the Front-End electronics of the PANDA Barrel EMC / Christoph Rosenbaum." Gießen : Universitätsbibliothek, 2016. http://d-nb.info/1115653962/34.

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Zaunick, Hans-Georg [Verfasser]. "Developments toward a Silicon Strip Tracker for the PANDA Experiment / Hans-Georg Zaunick." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1044870168/34.

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Zimmermann, Sebastian [Verfasser]. "Development of the Fast Timing PANDA Barrel Time-of-Flight Detector / Sebastian Zimmermann." Gießen : Universitätsbibliothek, 2021. http://d-nb.info/1230476105/34.

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Gustafsson, Mattias. "Monte Carlo simulations of D-mesons with extended targets in the PANDA detector." Thesis, Uppsala universitet, Kärnfysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-295024.

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Within the PANDA experiment, proton anti-proton collisions will be studied in order to gain knowledge about the strong interaction. One interesting aspect is the production and decay of charmed hadrons. The charm quark is three orders of magnitude heavier than the light up- and down-quarks which constitue the matter we consist of. The detection of charmed particles is a challenge since they are rare and often hidden in a large background. There will be three different targets used at the experiment; the cluster-jet, the untracked pellet and the tracked pellet. All three targets meet the experimental requirements of high luminosity. However they have different properties, concerning the effect on beam quality and the determination of the interaction point. In this thesis, simulations and reconstruction of the charmed D-mesons using the three different targets have been made. The data quality, such as momentum resolution and vertex resolution has been studied, as well as how the different targets effect the reconstruction efficiency of D-meson have been analysed. The results are consistent with the results from a similar study in 2006, but provide additional information since it takes the detector response into account. Furthermore, a new target distribution have been implemented in the software package. This is the first results obtained from a cylindrical target distribution. The results are very important for PANDA since they show the limitations of different target types regarding the possibilities to reduce background. Simulations with the new target distribution have been made for all three targets and the results are presented.

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Norris, Dawn R. ""Walking around like a panda bear" feelings of stigma among nontraditional-age students /." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7805.

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Thesis (M.A.) -- University of Maryland, College Park, 2007.
Thesis research directed by: Dept. of Sociology. Title from t.p. of PDF. Includes bibliographical references. Also available in paper. Published by UMI Dissertation Services, Ann Arbor, Mich.

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Regina, Jenny. "A measurement level module for a pellet tracking system." Thesis, Uppsala universitet, Kärnfysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-314902.

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This report concerns a detection module used for a pellet tracking system. Spheres of frozen hydrogen known as pellets can be used as internal targets in hadron physics experiments. Pellets are created some distance above the accelerator beam and directed in a pellet beam pipe to intersect the accelerator beam. To determine the position of a pellet in the interaction region in the case of an interaction, the pellets need to be tracked. This is done using tracking sections along the pellet beam pipe with measurement levels containing lasers illuminating the pellets and cameras, detecting the light. The pellet position in the interaction region can be reconstructed with an accuracy of 0.1 mm. To reach this accuracy there are high demands on the alignment of the cameras and lasers. Alignment by a pellet beam pipe is generally difficult so a solution enabling alignment elsewhere is desired. Therefore a detection module consisting of a plate with cameras and lasers mounted to it has been constructed. These cameras and lasers can be aligned in an alignment bench setup before being transported to a pellet beam pipe. The alignment of the cameras and lasers on the detection module must be maintained under certain conditions e.g. transportation, temperature changes, exposure to vibrations. This report covers investigations regarding the mechanical stability of the detection module under these conditions. Different alignment bench targets are investigated. The effects of the optics of the cameras and lasers and the functionality of the detection module are investigated.

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Pradhan, Sunita. "Studies on some aspect of the ecology of the red panda ailurus fulgens, cuvier 1825 in the sighalila National park, Darjeeling, India." Thesis, University of North Bengal, 1998. http://hdl.handle.net/123456789/1007.

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Hägglund, Joel. "Pulse And Noise shaping D/A converter (PANDA) – Block implementation in 65nm SOI CMOS." Thesis, Linköping University, Linköping University, Electronics System, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-51632.

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In the European research projects SIAM and 100GET, building blocks for 100Gbit Ethernet optical link have been implemented. Data are sent from a computer, modulated, converted to analog, mixed onto the RF-band, sent through an optical link, down-mixed, converted back to digital, demodulated and sent to a receiving computer. Signal Processing Devices Sweden AB is contributing to this project by their implementation PANDA. This thesis has been to study, as a proof of concept, and implement a prototype of PANDA as the component converting from digital to analog signal, the DAC, in 65nm SOI CMOS technology.

The idea of the system is to use the concept of time interleaving, where two or more components interact by performing the same operations on a different set of data, ideally scaling the performance linearly with the amount of components used.

This report presents design, implementation and verification at simulation level. It includes interfacing with off-chip components in low voltage specifications, clock generation, filtering and current-steered switches.

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Yang, Liuqing. "Biosocial reciprocity in environmental communication: a study of giant panda conservation communication in China." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4868.

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This study proposes biosocial reciprocity framework in environmental communication, which suggests the interdependent relationships between mass media, people's attitudes, and the physical environment. Biosocial reciprocity is applied to analyze the mass media's possible roles in giant panda conservation in China. The mass media's image construction of giant pandas is assessed through a content analysis of People's Daily (1995 to 2004); the conservation awareness, activities, and environment changes are assessed by a review of the country's giant panda conservation history and policies. The result suggests active interrelations among the media, Chinese attitudes toward wildlife, and the loss of wild panda population and habitat. The study urges that to positively influence the natural world, much needs to be done to improve the Chinese media's effectiveness in fostering grassroots environmental value and awareness. Biosocial reciprocity provides a practical conceptual framework for this study to sort out media-related linkages between the social and physical world of giant panda conservation.

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Dbeyssi, Alaa. "Study of the internal structure of the proton with the PANDA experiment at FAIR." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00906761.

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The proton is a bound state of quarks which are held together by the strong force, mediated by gluons. The understanding of the proton structure is presently one of the central issues in hadron physics. The present work reports on phenomenological and experimental studies related to the possibilities offered by the future antiproton beam at the FAIR facility at Darmstadt, in the momentum range between 1.5 and 15 GeV/c. After a classification of the reaction channels which are accessible in antiproton-proton annihilation, the main features of the PANDA detector are described. A chapter of this thesis is dedicated to the study of the optical coupling between crystals and photodiodes in the electromagnetic calorimeter, which will be operated at low temperature (-25° C). Mechanical, thermal, optical properties and radiation hardness of two commercial glues are quantified.Feasibility studies of the reaction barp → e+e− for the Time-Like proton form factor measurements at PANDA are presented. The electromagnetic structure of the proton is parametrized in terms of electric GE and magnetic GM form factors. The electromagnetic interaction is well described by the theory of quantum electrodynamics. The traditional tool to determine proton electromagnetic form factors is polarized and unpolarized electron-proton elastic scattering, assuming that the interaction occurs through the exchange of one virtual photon. The crossed symmetry channels pbarp ↔ e+e− allowto access the Time-Like region. The background reactions are also studied, in particular the pbarp → π+π− channel. The results obtained from a realistic Monte Carlo simulation using PANDARoot show that the proton form factor ratio can be measured at PANDA with unprecedented accuracy. The effects of radiative corrections due to real and virtual photon emission are considered.Based on a model independent formalism, the calculation of the experimental observables for the pbarp → e+e− reaction is extended to the annihilation into a heavy lepton pair which carries the same physical information on the proton structure as the electrons. In this case, the lepton mass can not be neglected. The same formalism is also applied in Space-Like region to the elastic scattering of protons from electrons at rest (pe-inverse kinematics). We suggest that the elastic pe scattering can be used to polarize and/or to measure the polarization of high energy proton (antiproton) beams, and allows a precise measurement of the proton charge radius.

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Pérez, Andrade Gabriela. "Detector signatures of Xi and anti-Xi hyperons in the Forward Spectrometer at PANDA." Thesis, Uppsala universitet, Kärnfysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-349678.

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Dissertations / Theses on the topic 'PANDA'

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