In Spring/Summer 2017 there was an increase in Haitian nationals from the United States, entering Canada, reaching numbers as high of 7,787 (Government of Canada, 2019). This increase in irregular migration was covered by various news outlets and Canadian government officials addressed this as a ‘problem’. Given this important media and political reality, this thesis sought to explore the media representation of Haitian irregular migration. More specifically, I examine the media’s depiction of Haitian asylum seekers as well as the nation. Therefore, the goal of this thesis is to contextualize this media representation within a wider socio-political context. Through a Critical Race Theory perspective, I conduct a qualitative content analysis of news media articles published in the Toronto Star and The Globe and Mail. The analysis reveals that the nation is imagined as innocent while the asylum seekers are constructed as threats. This thesis goes on to demonstrate how the media has relied on a discourse of inclusion/exclusion and of victimization in order to positively imagine the nation. Meanwhile, by framing asylum seekers’ motivations for entering Canada as frivolous and by utilizing techniques of vilification, the media is able to delegitimize the asylum seekers’ claims. Finally, this thesis concludes that the media has a tendency to omit the socio-political context of its portrayal of the asylum seekers and of the nation. Therefore, it is important for the media to accurately represent irregular migration in order to expose global inequalities.

Heterogeneous multi-core architectures have a higher performance/power ratio than traditional homogeneous architectures. Due to their heterogeneity, these architectures support diverse applications but developing parallel algorithms on these architectures can be difficult. In implementing algorithms for heterogeneous systems, proprietary languages are often required, limiting portability. Although general purpose graphics processing units (GPUs) have shown great promise in accelerating the performance of throughput computing applications, it is still limited by the memory wall. The memory wall can greatly affect application performance for problems that incorporate amorphous parallelism or irregular workload. Now, AMD's Fusion series of Accelerated Processing Units (APUs) attempts to solve this problem. The APU is a radical change from the traditional systems of a few years ago. This design change enables consumers to have a capable CPU connected to a powerful, compute-capable GPU using a Very Long Instruction Word (VLIW) architecture. In this thesis, I address the suitability of irregular workload problems on APU architectures. I consider four scientific computing problems of varying characteristics and map them onto the architectural features of the APU. I develop several software optimizations for each problem by making effective use of VLIW static scheduling through techniques such as loop unrolling and vectorization. Using AMD's OpenCL profiler, I analyze the execution of the various optimizations and provide an in-depth performance analysis using metrics such as kernel occupancy, ALUFetchRatio, ALUBusy Percentage and ALUPacking. Finally, I show the effect of register pressure due to vectorization and the limitations associated with the APU architecture for irregular workloads.

Orientador: Ernesto Vieira Neto / Banca: Rodolpho Vilhena de Moraes / Banca: Décio Cardozo Mourão / Resumo: Devido ao grande avanço da tecnologia espacial o número de satélites irregulares conhecidos vem aumentando rapidamente nos últimos anos. O estudo das perturbações que agem sobre estes satélites contribui para explicar a origem e estabilidade da órbita destes corpos celestes. Uma dessas perturbações é a ressonância de evecção que se caracteriza por ser um fenômeno no qual o pericentro da órbita do satélite fica preso na direção do corpo perturbador. Outra perturbação no movimento desses satélites de altas inclinações se dá quando o argumento do pericentro circula ou libra em torno de 90º ou 270º, ou seja, a ressonância Kozai (Kozai 1962). Neste trabalho, é feito um estudo semi-analítico dos efeitos da ressonância de evecção no movimento orbital dos satélites irregulares do planeta Júpiter, utilizando a função perturbadora desenvolvida por Cuk et al. (2004) e que contém termos das ressonâncias de evecção e Kozai. O princípio da média é aplicado somente no movimento orbital do satélite. É feita uma extensa análise do comportamento dos elementos orbitais de uma partícula nas regiões habitadas pelos satélites irregulares. / Abstract: In the recent years, due to the great advance of the space technology, the number of known irregular satellites is increasing quickly. Studying the disturbances which act on these satellites may contribute to explain the origin and stability of the orbit of these satellites. One of the main disturbances is the evection resonance which is characterized by fixing the pericenter of the orbit of the satellite in the direction of the disturbing body. Another disturbance, know as Kozai resonance (Kozai 1962), acts in the movement of those satellites with high inclinations and makes the argument of pericentro circulates or librates around 90º or 270º. In this work is made a semianalytical study of the evection resonance effect in the orbital movement of the irregular satellites of the Jupiter planet. It is used the disturbing function developed by Cuk et al. (2004) which contain terms of evection and Kozai resonances. The principle of the average is only applied in the orbital movement of the satellite. It is made an extensive analysis of the behavior of the orbital elements of a particle in the regions inhabited for the irregular satellites. / Mestre

For decades our military has been designed and funded as a conventionally superior force on the battlefield employing the most devastating and advanced weapon systems the world has ever seen (World, War I, II, Operation Desert Storm, and Phase I of Operation Iraqi Freedom). However, in low intensity conflicts (LICs) or irregular warfare (IW) campaigns, U.S. forces are faced with an irregular enemy, one that does not choose to fight our forces directly but rather through unconventional or indirect methods. For over 60 years, the Department of Defense has had an appalling record of protecting its air bases and personnel while deployed around the world in support of low intensity conflicts. However, the way the military defends and protects these air bases still revolves around a Cold War threat, a conventional threat. The strategy of global power projection and forward presence are the cornerstone to U.S. defense. To enhance combat capabilities in the Air Force and to defeat irregular warfare (IW) forces in any environment, the answer lies within the concept of Integrated Swarming Operations (ISO); the complete integration of a highly trained security force, skilled in the employment of successful counterinsurgency tactics, techniques, and procedures (TTPs), with today's most sophisticated Command, Control, Communications, Computer and Intelligence, Surveillance, and Reconnaissance (C4ISR) platforms into a battlefield swarm. In doing so, ISO allows security forces to achieve their three critical air base defense Mission Essential Tasks (METs) of 1) tactical ISR, 2) intercepting the threat, and 3) application of force as well as the Air Force's Integrated Base Defense (IBD) Objectives of "See First, Understand First, and Act First." / US Air Force (USAF) author.

Simulation techniques and a Volterra functional polynomial are applied as two alternative methods of calculating ship roll response to irregular waves. The roll motion is modeled by a single degree of freedom differential equation, with two alternative nonlinear damping functions. Estimation techniques are developed to obtain the coefficients of the damping functions from decay tests and from forced rolling tests. A linear plus quadratic form of damping function is found to be slightly preferable to a linear plus cubic form. The roll response process is found to be non-Gaussian, and characterised by negative values of the coefficient of kurtosis. Simulation results agree well with results obtained from the functional polynomial for low response levels, but show increasing disagreement as the response level increases, due to divergence of the functional polynomial representation. Analyses of results from model tests in irregular waves and from sea trials confirm the non-Gaussian nature of the roll response. A "constrained" form of the generalised gamma distribution function is found to provide an improved fit to the roll maxima and tothe roll minima, as compared to the Rayleigh distribution. The model tests also show some asymmetry in the roll response, which is not predicted by the theoretical model. It is suggested that this asymmetry may primarily be due to the combined effect of horizontal drift forces and the restraining system used to keep the model on station.

SILVEIRA, J. A. N. Pré-processamento de cenários para reconfiguração de roteamento eficiente em MPSOC baseado em NoC tolerante a falhas. 2015. 86 f. Tese (Doutorado em Engenharia de Teleinformática) – Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2015. / Submitted by Marlene Sousa (mmarlene@ufc.br) on 2015-10-09T14:20:35Z No. of bitstreams: 1 2015_tese_jansilveira.pdf: 2586375 bytes, checksum: a9fba4ff689db3af8a0aa7785e038080 (MD5) / Approved for entry into archive by Marlene Sousa(mmarlene@ufc.br) on 2015-10-09T15:40:52Z (GMT) No. of bitstreams: 1 2015_tese_jansilveira.pdf: 2586375 bytes, checksum: a9fba4ff689db3af8a0aa7785e038080 (MD5) / Made available in DSpace on 2015-10-09T15:40:52Z (GMT). No. of bitstreams: 1 2015_tese_jansilveira.pdf: 2586375 bytes, checksum: a9fba4ff689db3af8a0aa7785e038080 (MD5) Previous issue date: 2015-09-30 / The latest technologies of integrated circuit manufacturing allow billions of transistors to be arranged on a single chip, enabling us to implement a complex parallel system, which requires a communications architecture with high scalability and high degree of parallelism, such as a Network-on-Chip (NoC). These technologies are very close to physical limitations, which increases the quantity of faults in circuit manufacturing and at runtime. Therefore, it is essential to provide a method for fault recovery that would enable the NoC to operate in the presence of faults and still ensure deadlock-free routing. The preprocessing of the most probable fault scenarios allows us to anticipate the calculation of deadlock-free routing, reducing the time that is necessary to interrupt the system during a fault occurrence. This work proposes a technique that employs the preprocessing of fault scenarios based on forecasting fault tendencies, which is performed with a fault threshold circuit operating in agreement with high-level software. The technique encompasses methods for dissimilarity analysis of scenarios based on cross-correlation measurements of fault link matrices, which allow us to define a reduced and efficient set of fault coverage scenarios. Experimental results employing RTL simulation with synthetic traffic prove the quality of the analytic metrics that are used to select the preprocessed scenarios. Furthermore, the experiments show the efficacy and efficiency of the proposed dissimilarity methods, quantifying the latency penalization when using the coverage scenarios approach / As últimas tecnologias de fabricação de circuitos integrados habilitam bilhões de transistores a serem postos em um único chip, permitindo implementar um sistema paralelo complexo, o qual requer uma arquitetura de comunicação que tenha grande escalabilidade e alto grau de paralelismo, tal como uma rede intrachip, em inglês, Network-on-Chip (NoC). Estas tecnologias estão muito próximas de limitações físicas, aumentando a quantidade de falhas na fabricação dos circuitos e em tempo de operação. Portanto, é essencial fornecer um método para recuperação de falha que permita a NoC operar na presença de falhas e ainda garantir roteamento livre de deadlock. O pré-processamento de cenários de falha mais prováveis permite antecipar o cálculo de rotas livres de deadlock, reduzindo o tempo necessário para interromper o sistema durante a ocorrência de uma falha. Esta tese propõe uma técnica que emprega o pré-processamento de cenários de falha baseado na previsão de tendência de falhas, a qual é realizada com um circuito de limiar de falha operando em conjunto com um software de alto nível. A técnica contempla análises de métodos de dissimilaridade de cenários baseadas na correlação cruzada de matrizes bidimensionais de conexões com falha, que permite definir um conjunto reduzido e eficiente de cenários de cobertura de falhas. Resultados experimentais, empregando simulação com precisão em nível de ciclo e tráfego sintético, provam a qualidade das métricas analíticas usadas para selecionar os cenários pré-processados. Além do mais, os experimentos mostraram a eficácia e eficiência dos métodos de dissimilaridades propostos, quantificando a penalização de latência no uso da abordagem de cenários de cobertura

Made available in DSpace on 2014-06-11T19:25:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-10-01Bitstream added on 2014-06-13T19:12:16Z : No. of bitstreams: 1 capelo_m_me_guara.pdf: 9441304 bytes, checksum: 976fcacdfa9765f692caf8a068ecc84b (MD5) / Universidade Estadual Paulista (UNESP) / Devido ao grande avanço da tecnologia espacial o número de satélites irregulares conhecidos vem aumentando rapidamente nos últimos anos. O estudo das perturbações que agem sobre estes satélites contribui para explicar a origem e estabilidade da órbita destes corpos celestes. Uma dessas perturbações é a ressonância de evecção que se caracteriza por ser um fenômeno no qual o pericentro da órbita do satélite fica preso na direção do corpo perturbador. Outra perturbação no movimento desses satélites de altas inclinações se dá quando o argumento do pericentro circula ou libra em torno de 90º ou 270º, ou seja, a ressonância Kozai (Kozai 1962). Neste trabalho, é feito um estudo semi-analítico dos efeitos da ressonância de evecção no movimento orbital dos satélites irregulares do planeta Júpiter, utilizando a função perturbadora desenvolvida por Cuk et al. (2004) e que contém termos das ressonâncias de evecção e Kozai. O princípio da média é aplicado somente no movimento orbital do satélite. É feita uma extensa análise do comportamento dos elementos orbitais de uma partícula nas regiões habitadas pelos satélites irregulares. / In the recent years, due to the great advance of the space technology, the number of known irregular satellites is increasing quickly. Studying the disturbances which act on these satellites may contribute to explain the origin and stability of the orbit of these satellites. One of the main disturbances is the evection resonance which is characterized by fixing the pericenter of the orbit of the satellite in the direction of the disturbing body. Another disturbance, know as Kozai resonance (Kozai 1962), acts in the movement of those satellites with high inclinations and makes the argument of pericentro circulates or librates around 90º or 270º. In this work is made a semianalytical study of the evection resonance effect in the orbital movement of the irregular satellites of the Jupiter planet. It is used the disturbing function developed by Cuk et al. (2004) which contain terms of evection and Kozai resonances. The principle of the average is only applied in the orbital movement of the satellite. It is made an extensive analysis of the behavior of the orbital elements of a particle in the regions inhabited for the irregular satellites.

No description available.

No description available.

Under the leadership of the United States Special Operations Command (USSOCOM), the military is undergoing transformation to more effectively counter the asymmetric threat of non-state terrorists and extremists in the "long war." After five years, however, one component of national security strategy is visibly unfulfilled: military pursuit of terrorists and extremists outside of Afghanistan and Iraq. The lack of offensive military efforts outside of areas designated as combat zones creates the impression that the long war has stalled. Overt offensive military operations targeting non-state actors may advance the counterterrorism mission and serve as a deterrent. This thesis identifies and analyzes four major constraints on the conduct of such operations: legal concerns about the use of force, use of the CIA for covert paramilitary activities, limits on USSOCOM and Special Operations Forces, and civilian and military leaders' aversion to risk. It describes the historical, bureaucratic and cultural causes of the constraints, concluding with recommendations to allow the US government and the US military to pursue non-state terrorists and extremists with overt offensive military operations.