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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Poets on the Hill: A Contemporary Exploration of Canadian Political Poetry in English

DesRoches, Nicolas N. 10 1900 (has links)
<p>In this thesis, I investigate Canadian poetry that is explicitly about the political (politicians, political parties, or political policies) written in English. I begin by defining political poetry and its aims in Canada and then progress through an examination of three collections of poetry and one poem: <em>The Blasted Pine</em>; <em>Howl Too, Eh?</em>; and <em>Rogue Stimulus</em>. This allows for a comprehensive look at how political poetry has evolved in Canada from a pointed and critical genre that aims to mock and argue to a more subtle, playful genre that utilizes parody and wit. It also demonstrates the evolution and complication of voice in political poetry, given that each poem contains the voice of the poet, the speaker, the public, and the political.</p> <p>I argue that political poetry in Canada is not poetry as dissent, protest, or witness, but rather poetry as inquiry/commission (in the political sense). This definition relies on the fact that Canadian political poetry seeks to ascribe accountability for political actions and decisions and utilizes the poet as spokesperson, speaking for the public to the political (and the public in turn). Canadian political poetry hence arises out of a demand from the public, much like political inquiries do, and through the satirical use of politically correct language and explicit political references calls for action from the political sphere and the public. I further argue that poetry as inquiry also comments on the public itself (including the author/speaker as a member of that public) and that political poetry is transideological.</p> / Master of Arts (MA)
52

The Pursuit of Commerce: Agricultural Development in Western Oregon, 1825-1861

Smith, Cessna R. 01 January 2011 (has links)
This thesis examines how the pursuit of commercial gain affected the development of agriculture in western Oregon's Willamette, Umpqua, and Rogue River Valleys. The period of study begins when the British owned Hudson's Bay Company began to farm land in and around Fort Vancouver in 1825, and ends in 1861--during the time when agrarian settlement was beginning to expand east of the Cascade Mountains. Given that agriculture in Oregon, as elsewhere, would eventually reach a standard of national development, and given that most of Oregon's immigrants arrived poor and lacked the farm implements needed for subsistence, the question this study asks is what methods and motivations guided Oregon's first agrarian settlers to improve their industry? It is the central premise of this study that commerce was the sine qua non of agricultural development, and that commercial gain was the incentive that underpinned the improvements necessary to its progress. The question itself necessarily involves physiographical and climatological conditions, existing and potential markets, and a merchant class whose commercial motivations were beyond doubt. Two additional matters that weigh substantially through most of this paper need to be mentioned: First, because not all farmers were commercially-oriented, the focus is on individuals, including merchants, whose entrepreneurial activities contributed the most to agriculture; second, the discovery of gold in California in 1848, and in southern Oregon in the early 1850s, had a huge and lasting influence on Oregon agriculture and on the overall economy.
53

Ondes scélérates complexes dans les fibres optiques / Complex rogue wave in the fiber optics

Frisquet, Benoit 24 March 2016 (has links)
Ce manuscrit de thèse présente l’étude d’instabilités non-linéaires et la génération d’ondes scélérates complexes liées à la propagation de la lumière dans des fibres optiques standards des télécommunications optiques. Un rappel est tout d’abord présenté sur les phénomènes physiques linéaires et non-linéaires impliqués et qui peuvent présenter une analogie directe avec le domaine de l’hydrodynamique. Les différentes formes d’ondes scélérates liées au processus d’instabilité de modulation, aussi appelées « breathers », sont alors présentées, elles sont obtenues par la résolution de l’équation de Schrödinger non-linéaire. À partir de ces solutions exactes, divers systèmes expérimentaux sont alors conçus par simulation numérique à partir de deux méthodes d’excitation d’ondes scélérates. La première est une génération exacte à partir des solutions analytiques en effectuant une mise en forme spectrale en intensité et en phase d’un peigne de fréquence optique. La seconde méthode est basée sur des conditions initiales approchées avec des ondes continues modulées sinusoïdalement. Les mesures expérimentales réalisées avec ces deux méthodes démontrent parfaitement la génération d’ondes scélérates complexes (solutions d’ordre supérieur du système) issues de la superposition non-linéaire ou collisions de « breathers » de premier ordre. Enfin, nous avons également étudié un système non-linéaire équivalent au modèle de Manakov, qui fait intervenir la propagation de deux ondes distinctes avec des polarisations orthogonales dans une fibre optique. L’analyse de stabilité et des simulations numériques de ce système multi-variable mettent en évidence un nouveau régime d’instabilité de modulation vectorielle ainsi que de nouvelles solutions d’ondes scélérates noires et couplées en polarisation. Un nouveau système expérimental mis en place a permis de confirmer ces prédictions théoriques avec un excellent accord quantitatif. / This manuscript presents the generation of complex rogue waves related to nonlinear instabilities occurring through the propagation of light in standard optical fibers. Linear and nonlinear physical phenomena involved are first listed, in particular some of them by analogy with the field of hydrodynamics. The different forms of rogue waves induced by the modulation instability process are then presented. They are also known as "breathers", and they are obtained by solving the nonlinear Schrödinger equation. From these exact solutions, various experimental systems were designed by means of numerical simulations based on two rogue-wave excitation methods. The first one is an exact generation of mathematical solutions based on the spectral shaping of an optical frequency comb. The second method uses approximate initial conditions with a simple sinusoidal modulation of continuous waves. For both cases, experimental measurements demonstrate the generation of complex rogue waves (i.e., higher-order solutions of the system) arising from the nonlinear superposition or collision of first-order breathers. Finally, we also studied a nonlinear fiber system equivalent to the Manakov model, which involves the propagation of two distinct waves with orthogonal polarizations. The stability analysis and numerical simulations of this multi-component system highlight a novel regime of vector modulation instability and the existence of coupled dark rogue-wave solutions. A new experimental system setup was conceived and theoretical predictions are confirmed with an excellent quantitative agreement.
54

Linear and Nonlinear Rogue Waves in Optical Systems / Vagues scélérates linéaire et non-linéaire dans les systèmes optiques

Toenger, Shanti 27 June 2016 (has links)
Ces travaux de thèse présentent l’étude des différentes classes d’effets linéaires et non-linéaires en optiquequi génèrent des événements extrêmes dont les propriétés sont analogues à celles des « vagues scélérates » destructrices qui apparaissent à la surface des océans. La thèse commence avec un bref aperçu de l’analogie physique entre la localisation d’onde dans les systèmes hydrodynamique et les systèmes optique, pour lesquels nous décrivons les mécanismes de génération de vagues scélérates linéaire et non-linéaire. Nous présentons ensuite quelques résultats numérique et expérimentaux de la génération de vagues scélérates dans un système optique linéaire dans le cas d’une propagation spatiale d’un champ optique qui présenteune phase aléatoire, où nous interprétons les résultats obtenus en terme de caustiques optiques localisées.Nous considérons ensuite les vagues scélérates obtenues dans des systèmes non-linéaires qui présentent une instabilité de modulation décrite par l’équation de Schrödinger non-linéaire (ESNL). Nous présentons une étude numérique détaillée comparant les caractéristiques spatio-temporelles des structures localisées obtenues dans les simulation numérique avec les différentes solutions analytiques obtenues à partir de l’ESNL.Deux études expérimentales d’instabilités de modulation sont ensuite effectuées. Dans la première, nous présentons des résultats expérimentaux qui étudient les propriétés d’instabilité de modulation en utilisant un système d’agrandissement temporel par lentille temporelle; dans la deuxième, nous rapportons des résultats expérimentaux sur les propriétés des instabilités de modulation dans le domaine fréquentiel en utilisant une technique de mesure spectrale en temps-réel. Cette dernière étude examine l’effet sur la bande spectrale et surla stabilité d’un faible champ perturbateur. Tous les résultats expérimentaux sont comparés avec la simulation d’ESNL et abordés en termes des propriétés qualitatives d’instabilité de modulation. Dans toutes ces études,différentes propriétés statistiques sont analysées en rapport avec l’apparition des vagues scélérates. / This thesis describes the study of several different classes of linear and nonlinear effects in optics that generatelarge amplitude extreme events with properties analogous to the destructive “rogue waves” on the surface of theocean. The thesis begins with a brief overview of the analogous physics of wave localisation in hydrodynamicand optical systems, where we describe linear and nonlinear rogue wave generating mechanisms in bothcases. We then present numerical and experimental results for rogue wave generation in a linear opticalsystem consisting of free space propagation of a spatial optical field with random phase. Computed statisticsbetween experiment and modelling are in good agreement, and we interpret the results obtained in termsof the properties of localised optical caustics. We then consider rogue waves in the nonlinear system ofmodulation instability described by the Nonlinear Schrodinger Equation (NLSE), and a detailed numericalstudy is presented comparing the spatio-temporal characteristics of localised structures seen from numericalsimulations with different known analytic solutions to the NLSE. Two experimental studies of modulationinstability are then reported. In the first, we present experimental results studying the properties of modulationinstability using a time-lens magnifier system; in the second, we report experimental results studying thefrequency-domain properties of modulation instability using real-time spectral measurements. The latter studyexamines the effect of a weak seed field on spectral bandwidth and stability. All experimental results arecompared with the NLSE simulations and discussed in terms of the qualitative properties of modulationinstability, in order to gain new insights into the complex dynamics associated with nonlinear pulse propagation.In all of these studies, different statistical properties are analised in relation to the emergence of rogue waves.
55

Impact of interfering rouge access points on modulationand coding in IoT network / Påverkan av störande obehörigaåtkomstpunkter på modulation ochkodning i IoT-nätverk

Saif, Amgad Shaher January 2023 (has links)
This Bachelor thesis presents an in-depth investigation into the effects of RogueAccess Point interference within Internet of Things networks. The study focuses onthe impact of rogue APs on the modulation and coding scheme indices, round triptime, and overall network performance. The presence of a rogue AP was found toshift devices from dual-stream to single-stream operation, causing a decrease in themodulation and coding scheme indices and data rates. Additionally, a significantincrease in round trip time was observed, emphasizing the detrimental impact ofrogue AP interference on network latency. The insights gained from this researchcontribute to a greater understanding of the challenges posed by rogue APinterference. This deeper comprehension paves the way for devising effectivestrategies to mitigate these impacts, thereby enhancing the reliability, security, andperformance of IoT networks. / Detta examensarbete presenterar en grundlig undersökning av effekterna avstörande åtkomstpunkter (Rogue Access Points) inom nätverk för Sakernas Internet(Internet of Things). Studien fokuserar på störande åtkomstpunkter inverkan påmodulations- och kodningsschemaindex (MCS), round trip time och denövergripande nätverksprestandan. När en störande åtkomstpunkt blev närvarandetvingades enheterna att omställa sig från att använda dubbelströmsoperation tillenkelströmsoperation, vilket ledde till en minskning av MCS-index ochdatahastigheter. Dessutom observerades en betydande ökning av RTT, vilketbetonar den skadliga inverkan av störande åtkomstpunkt interferens pånätverkslatens. De insikter som vunnits bidrar till en större förståelse för deutmaningar som störande åtkomstpunkter interferens medför. Denna djupareförståelse banar väg för att utforma effektiva strategier för att mildra dessa effekter,vilket i sin tur förbättrar tillförlitligheten, säkerheten och prestanda för IoT-nätverk.
56

Cyber crime: a comparative law analysis

Maat, Sandra Mariana 11 1900 (has links)
The Electronic Communications and Transactions Act, 25 of 2002, eradicated various lacunae that previously existed in respect of cyber crimes. Cyber crimes such as inter alia hacking, rogue code, unauthorised modification of data and denial of service attacks have now been criminalised. Specific criminal provisions in relation to spamming, computer-related fraud and extortion have also been included in the Act. It is argued that theft of incorporeal items such as information has already been recognised in our law, but has not been taken to its logical conclusion in our case law. However, there are instances where neither the common law nor our statutory provisions are applicable and where there is still a need for legislative intervention. The Act sufficiently deals with jurisdiction, the admissibility of data messages, the admissibility of electronic signatures and the regulation of cryptography. Cyber inspectors are a new addition to law enforcement. / Jurisprudence / L. L. M.
57

United States policy and nuclear non-proliferation: a preliminary comparison of the Bush and Obama administrations' approaches

Nel, Coligny 03 1900 (has links)
Thesis (MA (Political Science))--University of Stellenbosch, 2010. / ENGLISH ABSTRACT: The United States of America (USA) has a new president in the White House - a president whose rhetoric appears to distance himself from the policies of the previous administration. This also appears to hold true for his approach with regard to nuclear nonproliferation. The overarching research aim of this study is to explore whether the Obama administration’s policy with regard to nuclear non-proliferation will differ significantly from that of the Bush administration. The broader subject of nuclear non-proliferation will be subdivided into three themes, namely: disarmament, proliferation by non-nuclear states and nuclear terrorism. In order to sketch the international context within which the USA’s policy must be viewed, an overview of the nuclear non-proliferation regime is provided. This will be followed by an exploration of disarmament, proliferation by nonnuclear states (with Iran and North Korea as case studies) and nuclear terrorism. In each case, a comparison between the Bush administration and the Obama administration’s policies will be done. Finally, an analysis will be done of the main similarities and differences between the two administrations’ approaches, with a focus on the use of hard, soft and smart power. The study concludes that the primary difference between the Bush and Obama administration’s approaches is that Bush pursued only one policy option (hard power) at a time, while Obama intends to use many different policy options (smart power) at the same time, with a focus on increasing the use of soft power. This sort of pragmatism may just be what the USA needs right now in order to address the problem of nuclear proliferation. / AFRIKAANSE OPSOMMING: Die Verenigte State van Amerika (VSA) het ‘n nuwe president in die Withuis – ‘n president wie se uitsprake hom van die beleide van die vorige administrasie blyk te distansieer. Dit wil ook voorkom asof dit van toepassing is op sy benadering tot kernwapen versperring. Die oorhoofse navorsingsdoelwit van hierdie studie is om te ondersoek of die Obama administrasie se beleid ten opsigte van kernwapen versperring aansienlik van die van die Bush administrasie gaan verskil. Die breër onderwerp van kernwapen versperring kan in drie temas opgedeel word, naamlik: ontwapening, proliferasie deur nie-kernwapenstate, en kernwapen terrorisme. Ten einde die internasionale konteks te skets waarin die VSA se beleid moet geskied, begin die studie met ‘n oorsig van die kernwapen versperring regime. Dit word gevolg deur ‘n ondersoek van onderskeidelik ontwapening, proliferasie deur nie-kernwapenstate (met Iran en Noord-Korea as gevallestudies) en kernwapen terrorisme. By elkeen van die drie temas word ‘n vergelyking tussen die Bush administrasie en die Obama adminstrasie se beleide getref. Laastens word ‘n analise van die hoof verskille en ooreenkomste tussen die twee administrasies se benaderings onderneem, met die klem op die gebruik van harde, sagte en slim mag. Die bevinding van die studie is dat die hoof verskille tussen die Bush en Obama administrasies se benaderings behels dat Bush slegs een beleidsopsie (harde mag) op ‘n slag nagevolg het, terwyl Obama beoog om terselfdertyd van verskillende beleidsopsies (slim mag) gebruik te maak, met veral ‘n fokus op ‘n toename in die gebruik van sagte mag. Die soort pragmatisme mag dalk net wees wat die VSA tans nodig het om die probleem van kernwapen proliferasie aan te spreek.
58

Cyber crime: a comparative law analysis

Maat, Sandra Mariana 11 1900 (has links)
The Electronic Communications and Transactions Act, 25 of 2002, eradicated various lacunae that previously existed in respect of cyber crimes. Cyber crimes such as inter alia hacking, rogue code, unauthorised modification of data and denial of service attacks have now been criminalised. Specific criminal provisions in relation to spamming, computer-related fraud and extortion have also been included in the Act. It is argued that theft of incorporeal items such as information has already been recognised in our law, but has not been taken to its logical conclusion in our case law. However, there are instances where neither the common law nor our statutory provisions are applicable and where there is still a need for legislative intervention. The Act sufficiently deals with jurisdiction, the admissibility of data messages, the admissibility of electronic signatures and the regulation of cryptography. Cyber inspectors are a new addition to law enforcement. / Jurisprudence / L. L. M.

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