No description available.

The main goal of this thesis is to present the theory of Locally Nilpotent Derivations and to show how it can be used to investigate the structure of the polynomial ring in two variables k[X;Y] over a field k of characteristic zero. The thesis gives a com- plete proof of Rentschler's Theorem, which describes all locally nilpotent derivations of k[X;Y]. Then we present Rentschler's proof of Jung's Theorem, which partially describes the group of automorphisms of k[X;Y]. Finally, we present the proof of the Structure Theorem for the group of automorphisms of k[X;Y].

Producenten Kevin Parker har onekligen fått igenkänning för sitt trumsound. Som huvudsaklig låtskrivare och producent i rockbandet Tame Impala har han skapat sig ett ”signature sound”. Eftersom många gillar hur Parkers trummor låter har det förts långa diskussioner angående produktionsprocessen. Uppsatsen ämnade att ta reda på hur Parkers produktion sett ut och vilka ljudliga artefakter det är som utgör hans sound. Resultatet visar på en väldigt nedskalad inspelning. Ofta med ett enkelt vintage-trumkit och tre till fyra mikrofoner, dämpade skinn samt en hel del kompression och distorsion. Soundet kan beskrivas som väldigt energiskt, mycket tack vare just hård kompression och distorsion. Parkers sound känns igen även utanför Tame Impala. Trummorna upplevs i många fall som mycket mer än bara ett rytminstrument. Uppsatsen förklarar hur okonventionella produktionsprocesser kan ge upphov till originella ljudliga karaktärer, vilket i slutändan kan anses en positiv konsekvens.

<div>We further the research in o-minimal topology by studying in full generality definable topological spaces in o-minimal structures. These are topological spaces $(X, \tau)$, where $X$ is a definable set in an o-minimal structure and the topology $\tau$ has a basis that is (uniformly) definable. Examples include the canonical o-minimal "euclidean" topology, “definable spaces” in the sense of van den Dries [17], definable metric spaces [49], as well as generalizations of classical non-metrizable topological spaces such as the Split Interval and the Alexandrov Double Circle.</div><div><br></div><div>We develop a usable topological framework in our setting by introducing definable analogues of classical topological properties such as separability, compactness and metrizability. We characterize these notions, showing in particular that, whenever the underlying o-minimal structure expands $(\mathbb{R},<)$, definable separability and compactness are equivalent to their classical counterparts, and a similar weaker result for definable metrizability. We prove the equivalence of definable compactness and various other properties in terms of definable curves and types. We show that definable topological spaces in o-minimal expansions of ordered groups and fields have properties akin to first countability. Along the way we study o-minimal definable directed sets and types. We prove a density result for o-minimal types, and provide an elementary proof within o-minimality of a statement related to the known connection between dividing and definable types in o-minimal theories.</div><div><br></div><div>We prove classification and universality results for one-dimensional definable topological spaces, showing that these can be largely described in terms of a few canonical examples. We derive in particular that the three element basis conjecture of Gruenhage [25] holds for all infinite Hausdorff definable topological spaces in o-minimal structures expanding $(\mathbb{R},<)$, i.e. any such space has a definable copy of an interval with the euclidean, discrete or lower limit topology.</div><div><br></div><div>A definable topological space is affine if it is definably homeomorphic to a euclidean space. We prove affineness results in o-minimal expansions of ordered fields. This includes a result for Hausdorff one-dimensional definable topological spaces. We give two new proofs of an affineness theorem of Walsberg [49] for definable metric spaces. We also prove an affineness result for definable topological spaces of any dimension that are Tychonoff in a definable</div><div>sense, and derive that a large class of locally affine definable topological spaces are affine.</div>

Recent artists like Norwegian Recycling and E-603 have created a new genre of art within music: digital recycling. These artists take many different well-known and less-known lyrics, music, and spoken word and combine them together. This meshing of multiple pieces of art has new historical roots. The different images, auditory and visual, that these creations produce and often enhance meaning and connections through popular media. These connections interest me most. Through the lenses of post-colonial, gender, and queer theories, I examine Witi Ihimaera's creative work. I splice in different theorists' words, my own thoughts, and images to enhance and accent Ihimaera‘s ―Singing Word‖ (Juniper Ellis 170). According to Ihimaera, the written word and the ―novel is alien to the indigenous form, and that where Maori are going now is probably where it‘s most natural, and that is into theatre or into poetry…and oral storytelling‖ (Ihimaera 170). As the first published playwright in New Zealand and as an English professor at the University of Auckland, Witi Ihimaera is a role model and leader to many other Maori and New Zealand playwrights and writers. I am most interested in understanding what and how he has been influenced as an artist. I craft a document that extends the idea of a written word in a Maori context, in which I explore the major influences on Ihimaera as a theatrical creator and influencer of other Maori artists. Chapter one introduces Witi Ihimaera and my methods. Chapter two includes my research on the Maori culture with the following subsections: the people, their traditions, and their paternal systems of power. Chapter three is my research on the influx of Pakeha authority highlighting the Mormon take over and how that affected author and playwright Witi Ihimaera. iv Chapter four is my research on how Ihimaera‘s homosexuality has influenced his creations and the contemporary Maori Performance. Chapter five contains my conclusions of the connections I find. In addition, I use examples from Witi Ihimaera‘s fictional novel The Uncles Story, as well as many other of his plays and novels, to show examples of influences from Maori culture, Mormonism, and his homosexuality on Ihimaera‘s work.

<p>I det här arbetet presenteras en studie från ett projekt som ägde rum i Kolmården djurpark sommaren och hösten år 2003. Projektet bygger på ett uppdrag från jordbruksdepartementet. Det handlade om huruvida grävlingar i fångenskap reagerar i olika stressande situationer. För att kunna undersöka detta har grävlingarnas naturliga beteende studerats under fyra perioder från juni till september samma år. Det som studerats under perioden är grävlingarnas olika beteenden, lokationen i grävlingshägnet samt fysiologiska parametrar så som hjärtfrekvens och kroppstemperatur hos grävlingarna. </p><p>Observationerna har i huvudsak skett nattetid och då genom filmning med kamera med IR-belysning. För att kunna mäta hjärtfrekvens och kroppstemperatur opererades en sändare in i grävlingarna. Grävlingarna är nattaktiva djur som vanligtvis vilar under dagen. De är mest aktiva under våren och sommaren och därefter avtar aktiviteten successivt fram till vintern när den går i vila. De tillbringar minst tid i sina bohyddor under sommarperioden och när hösten kommer uppehåller de sig mer och mer i hyddorna. Grävlingarnas kroppstemperatur ligger på ca 37 ° C men sjunker när hösten och vintern närmar sig. Hjärtfrekvensen varierar mellan 50 och 120 slag per minut beroende på hur aktiva de är.</p>

I det här arbetet presenteras en studie från ett projekt som ägde rum i Kolmården djurpark sommaren och hösten år 2003. Projektet bygger på ett uppdrag från jordbruksdepartementet. Det handlade om huruvida grävlingar i fångenskap reagerar i olika stressande situationer. För att kunna undersöka detta har grävlingarnas naturliga beteende studerats under fyra perioder från juni till september samma år. Det som studerats under perioden är grävlingarnas olika beteenden, lokationen i grävlingshägnet samt fysiologiska parametrar så som hjärtfrekvens och kroppstemperatur hos grävlingarna. Observationerna har i huvudsak skett nattetid och då genom filmning med kamera med IR-belysning. För att kunna mäta hjärtfrekvens och kroppstemperatur opererades en sändare in i grävlingarna. Grävlingarna är nattaktiva djur som vanligtvis vilar under dagen. De är mest aktiva under våren och sommaren och därefter avtar aktiviteten successivt fram till vintern när den går i vila. De tillbringar minst tid i sina bohyddor under sommarperioden och när hösten kommer uppehåller de sig mer och mer i hyddorna. Grävlingarnas kroppstemperatur ligger på ca 37 ° C men sjunker när hösten och vintern närmar sig. Hjärtfrekvensen varierar mellan 50 och 120 slag per minut beroende på hur aktiva de är.

ABSTRACT KINETIC STUDIES FOR THE PRODUCTION OF TERTIARY ETHERS USED AS GASOLINE ADDITIVES Boz, Nezahat Ph. D., Department of Chemical Engineering Supervisor: Prof. Dr. Timur Dogu Co-supervisor: Prof. Dr. G&uuml / lSen Dogu June 2004, 174 pages In the present study, the kinetics studies for etherification reactions were investigated in detail. In the first phase of present study, different acidic resin catalysts were prepared by the heat treatment of Amberlyst-15 catalysts at 220&deg / C at different durations of time and also by the synthesis of sulfonated styrene divinylbenzene cross-linked resins at different conditions. A linear dependence of reaction rate on hydrogen ion-exchange capacity was in 2M2B+ethanol reaction. However, in the case of 2M1B+ethanol reaction hydrogen ion-exchange capacities over 2.8 meq.H+/g did not cause further increase in reaction rate, which was concluded to be majorly due to significance of diffusional resistances. DRIFTS experiments carried out with alcohols, isobutylene, isoamylenes and TAME (tert-amyl-methyl-ether) in a temperature range of 333-353 K supported a Langmuir-Hinshelwood type reaction mechanism involving adsorbed isoolefins molecules forming a bridged structure between &ndash / SO3H sites of the catalyst and adsorbed alcohol molecules. A rate expression derived basing on the mechanism proposed from the DRIFTS results gave good agreement with the published data. Reaction rate was found to give a sharp maximum at ethanol activity of around 0.1. The third phase of this work included evaluation of effective diffusivities and adsorption equilibrium constants of methanol, ethanol and 2M2B, in Amberlyst-15 from moment analysis of batch adsorber dynamic results. Models proposed for monodisperse and bidisperse pore structures were used for the evaluation of effective diffusivities. It was shown that surface diffusion contribution was quite significant. In the last phase of the work, a batch Reflux-Recycle-Reactor (RRR) was proposed, modeled and constructed to achieve high yields and selectivities in equilibrium limited reactions. The batch reflux recycle reactor was modeled by assuming plug flow in the reactor section, perfect mixing in the reboiler and vapor-liquid equilibria between the liquid in the reboiler and reactor inlet stream. In this system conversion values of isoamylenes reaching to 0.91 were achieved at 82&deg / C with almost 100% selectivity. Such conversion values were shown to be much higher than the corresponding equilibrium values that could be obtained in vapor phase fixed bed reactors. The activation energies evaluated in this system were found to be much less than the activation energies evaluated in the fixed bed reactor studies. This was concluded to be majorly due to the significance of transport resistant in the batch Reflux-Recycle-Reactor in which catalyst particles are partially wet. As a result of catalyst development, characterization, kinetic and reactor development studies carried out in this study, it was concluded that tert-amyl-ethyl-ether (TAEE) could be effectively produced and used as a gasoline blending oxygenate.

Submitted by Leonardo Lima (leonardoperlim@gmail.com) on 2016-04-25T13:25:01Z No. of bitstreams: 2 Cada doma é um livro.pdf: 8681596 bytes, checksum: 919339444c2a4117e1d1d85759eb64ca (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2016-04-26T14:04:07Z (GMT) No. of bitstreams: 2 Cada doma é um livro.pdf: 8681596 bytes, checksum: 919339444c2a4117e1d1d85759eb64ca (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2016-04-26T14:08:03Z (GMT) No. of bitstreams: 2 Cada doma é um livro.pdf: 8681596 bytes, checksum: 919339444c2a4117e1d1d85759eb64ca (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2016-04-26T14:08:15Z (GMT). No. of bitstreams: 2 Cada doma é um livro.pdf: 8681596 bytes, checksum: 919339444c2a4117e1d1d85759eb64ca (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2015-05-25 / Sem bolsa / Esta dissertação consiste numa etnografia sobre a relação entre humanos e animais no pampa sul-rio-grandense tendo como referência a interação estabelecida entre os domadores e os cavalos na doma. Essa relação constrói a própria técnica, as lides pastoris e o modo de vida. O domador é o artífice que possui a habilidade das técnicas de ensinar cavalos para atividades relacionadas aos trabalhos que envolvem a pecuária extensiva. É um saber/fazer constituído de diferentes momentos nos quais se acionam a utilização de determinados artefatos, estabelecendo uma interação em que o cavalo aprende formas de comunicação com o humano. Estes conjuntos de técnicas se classificam de acordo com a graduação da violência empreendida para domar o cavalo, embora, de acordo com os interlocutores, cada domador tem suas escolhas técnicas que são acionadas a partir da relação estabelecida com o cavalo. Para os domadores, o “cavalo é igual ao homem, tem temperamento”, em que uns são mansos, outros são “velhacos”, ou seja, rebeldes e outros são “baldosos”, caracterizados como animais traiçoeiros. Além disso, no processo de doma são levados em consideração os diferentes graus de assimilação dos ensinamentos de cada cavalo sendo a aprendizagem é um processo continuo em que precisa estar sempre praticando o animal para este “não perder a doma”, ou seja, esquecer o que aprendeu. Por conseguinte, no processo é estabelecido uma interação entre humanos e não humanos em que o domador ensina o cavalo, e este, por sua vez, o ensina na habilidade da execução das técnicas, fazendo-o experienciar diferentes maneiras de praticar tal saber/fazer. Assim, o trabalho etnográfico estabelece uma discussão sobre a aprendizagem tanto dos domadores quanto dos cavalos que se dá por meio de uma continua incorporação de habilidades constituídas na experiência e na vivencia do habitar o mundo das lidas pastoris e da vida. / This dissertation consists of an ethnography on the relationship between humans and animals in Rio Grande do Sul pampa having as reference the established interaction between the trainers and the horses in the taming. This relationship builds the technique itself, the pastoral labors, and the way of life. The trainer is the artifice who has the ability of techniques of teaching horses to activities related to jobs involving extensive livestock farming. It is a knowledge / make consists of different moments in which trigger the use of certain artifacts, establishing an interaction where the horse learns ways to communicate with the human. These sets of techniques are classifieds according to the degree of violence undertaken to tame the horse, although, according to the interlocutors, each handler has its technical choices that are useds according to the established relationship with the horse. For trainers, the "horse is equal to man, has temper", where some are tame, others are "velhacos", i.e., rebels and others are "baldosos", characterized as treacherous animals. In addition, the taming process are taken into account the varying degrees of assimilation of the teachings of each horse and learning is an ongoing process that needs to be always practicing the animal for this " not lose doma " , that is, forget We have learned. Consequently, in the process is established an interaction between human and nonhuman where the trainer teaches the horse, and this, in turn, teaches the skill of execution of techniques, making him experience different ways of practicing such knowledge / make. Therefore, the ethnographic work establishes a discussion about learning both as trainers of horses is through a continuing incorporation of skills constituted on experience and experiences of inhabiting the world of pastoral read and of life.

Soit $k$ un corps ultramétrique complet, $L$ une extension galoisienne finie modérément ramifiée de $k$ et $X$ un espace $k$-analytique. Nous montrons que $X$ est isomorphe à un $k$-polydisque fermé (resp. une $k$-dentelle) si et seulement si $X_L$ est isomorphe à un $L$-polydisque fermé (resp. une $L$-dentelle) sur lequel l'action de $\Gal(L/k)$ est raisonnable. Nous montrons que $X$ est isomorphe à un $k$-bidisque fermé si et seulement si $X_L$ est isomorphe à un $L$-bidisque fermé. Dans le cadre de l'algèbre graduée: on calcule le premier ensemble pointé de cohomologie du groupe linéaire et des automorphismes du plan. / Let $k$ be a complete non-Archimedean field, $L$ a finite tamely ramified galoisian extension of $k$ and $X$ a $k$-analytic space. We show that $X$ is isomorphic to a closed $k$-polydisc (resp. a $k$-lace) if and only if $X_L$ is isomorphic to a closed $L$-polydisc (resp. a $L$-lace) on which the action of $\Gal(L/k)$ is reasonable. We show that $X$ is isomorphic to a closed $k$-bidisc if and only if $X_L$ is isomorphic to a closed $k$-bidisc. In the formalism of graduated algebra : we calculate the first pointed cohomology set of the general linear group and of the automorphisms of the plane.