Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência da Computação. / Made available in DSpace on 2012-10-21T11:20:15Z (GMT). No. of bitstreams: 1 210977.pdf: 3171815 bytes, checksum: bf83468afb28c3e0d57c2322b1c8f216 (MD5) / Na área das telecomunicações, a crescente evolução e o constante desenvolvimento de novas tecnologias, aliado a fatores econômicos, tem proporcionado um grande impacto em praticamente todos os setores da sociedade. Além disso, a inexistência de padrões no setor de telecomunicações evidenciou as diferenças entre as estruturas das operadoras, onde existe uma constante introdução de novos serviços. Para atender rapidamente esta necessidade, faz-se necessário o uso de tecnologias avançadas que permitam conduzir a especificação e desenvolvimento desses serviços de uma maneira ágil e eficiente. Dentre tais tecnologias, pode se citar a orientação a objetos, reuso de componentes, sistemas distribuídos, arquitetura de serviços e, principalmente, TINA (Telecommunications Information Networking Architecture) devido à sua natureza aberta e independente de tecnologia. Os conceitos e os princípios de TINA foram elaborados com o objetivo de solucionar problemas existentes em IN (Intelligent Network), como o de controle de serviços centralizados e do modelo de dados de serviços. Nesse sentido, torna-se evidente que serviços mais complexos como multimídia e vídeo conferência precisam ser manipulados e gerenciados de uma forma mais rápida, eficiente e dinâmica. Neste contexto, TINA desenvolveu uma arquitetura detalhada para as redes de comunicações multi-serviços que permitem o intercâmbio de informações entre os usuários e os provedores em tempo real dentro de um ambiente seguro e confiável, onde o gerenciamento dos serviços TINA definidos pelas funções de gerenciamento FCAPS (Failure, Configurations, Accounting, Performance e Security) são ainda questões abertas para a pesquisa. Portanto, este trabalho de pesquisa tem como objetivo realizar um estudo e a análise deste contexto, propondo um modelo para responder as questões de segurança em um ambiente de serviço TINA. Este modelo esta principalmente relacionado com o gerenciamento de contabilidade em tempo real para múltiplos usuários e múltiplos provedores, onde os aspectos de segurança estão relacionados às políticas e mecanismos proporcionados pelos modelos de Segurança Multilateral e RBAC (Role-Based Access Control) e validado através do uso da técnica de descrição formal LOTOS e a implementação de um protótipo.

Student Number : 9812990V - MSc project report - School of Electrical Engineering - Faculty of Engineering and the Built Environment / The NGN is a multi-service network which inter-works with the Public Switched Telephone Network (PSTN), the voice network and the data network provided by Internet. Through network independent APIs such as OSA-Parlay, the NGN slowly migrates and converges Telecoms and IT networks, voice and Internet, into a common packet infrastructure. The OSA/Parlay group defines a softswitch architecture which provides network independent APIs or SCFs that enable cross network application development The Parlay softswitch provides connectivity to underlying transport networks for application providers. The standard specifies the interaction between application providers and the softswitch. However, the standard does not specify an interface to regulate the interaction between service providers and the consumer/end user domain. This means that applications housed in the service provider domain have no defined interfaces to manage service delivery to the consumer domain. For most service providers, the lack of a non-standardized API set impedes efforts to decrease application creation and deployment time. This research investigates the design and implementation of a standard consumer interface which can be used by application providers within an OSA/Parlay system to deliver service content to end users. The main objectives with regard to the functionality provided by the interface include the integration of facilities which will assist application providers to manage end user access and authentication (to enable users to establish a secure context for service usage), subscription (to handle the subscription life cycle), and service usage management (to enable the initiation and termination of services). The TINA-Consortium (TINA-C) has developed a service architecture to support the creation and provisioning of services in the NGN. The TINA architecture offers a comprehensive set of concepts and principles that can be used in the design of NGN services. The architecture consists of a set of reusable and interoperable service components encapsulating a rich and well defined set of APIs aimed at supporting the interaction between application providers and consumers. TINA’s session concepts, information structures, interfaces and service components can be used to support the design of a consumer premises end user interface for OSA/Parlay. This research also aims to explore the feasibility of using the TINA API within an OSA/Parlay system to support consumer domain service delivery. In order to implement the consumer interface for Parlay applications, the ability of the TINA service architecture to provide Access and Authentication management; Subscription and Profile management; and Service Usage management was investigated. The report documents the design and implementation of an OSA/Parlay consumer interface utilizing TINA service components and interfaces.

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Utifrån tre exempel undersöker uppsatsen konstens plats i den konstnärliga forskningen i det svenska och skandinaviska sammanhanget. Den frågar om konstens plats i relation till konstnärlig forskning och om den ska förstås som process, produkt, spår eller en kombination av dessa. Är det exempelvis möjligt att kartlägga de konstnärliga avhandlingarnas olika lager av meningsproduktion, och vad betyder det när de påstår sig producera kunskap? Snarare än att ställa formella frågor om vad den konstnärliga forskningen är, vill denna första pilotundersökning börja fråga när det som produceras genom konstnärlig forskning ska förstås som konst och när det handlar om någonting annat. / As higher artistic education explicitly becomes prepatory for research, the next generation of artists will inevitably be affected. How this change will constitute itself and whether the effect will be a reaction against or a product of this change is impossible to know. It is however already clear that artistic research is moving from periphery to centre in the Scandinavian art scene. Thus this pilot study essay asks how one can understand the position of the artwork produced within the context of artistic research: Is it a process, a product, a trace – or a combination of these? Is it possible to map the various layers of meaning produced? What does it mean to claim that art ”produces knowledge”? The essay focuses on three recent PhD´s in artistic research from Sweden. Rather than addressing formal questions of what artistic research is, or how art and research intertwine with each other, the investigation attempts to focus on when artists are making art within the context of artistic research, when they are doing something else.

The aim of the diploma thesis is to theoretically design and to put the mains power supply module for two-axis servo amplifier TZG 560 with the total power 28kW for the company TG Drives into practice. The analytical design of the power part with the braking circuit, the calculation of power components’ heat balance, EMI filter design and realization of measuring, controlling and indication circuits are described in the thesis. In addition, the mechanical device construction, structure of the controlling program and the results obtained in the verification process of the module functionality are presented.

No description available.

Covid19 hit the world’s financial markets by surprise in March 2020 and ensuing volatility marked an end to the prior low-volatility environment. This Black Swan engendered numerous publications establishing how the equity market responded to the exogenous shock. However, there is no applicable comparison to Nasdaq100 regarding how models perform during extreme conditions such as ante, amid and post Covid19. Furthermore, goodness of fit together with forecasting accuracy are further examined in the light of new intra-day data from Oxford Man Institute covering this time-period. This thesis presents a comparison of volatility models incorporating economic intuition, sentiment, historical values of volatility and stochastics. By exploiting intra-day at 5 min interval the trade-off between noise and loss of valuable information effectively kept at a minimum yielding considerable robustness to the thesis’ result. Linear ARCH-models, Implied Volatility and HARRV applied with the addition of several different combinations of hold-out periods enable multiple vantagepoints for evaluation. This thesis finds HARRV’s series of one-step ahead prediction of future conditional volatility to be superior throughout all hold-out periods. I am able to present empirical evidence supporting the idea that HARRV’s additive cascades of volatility is superior to sentiment-driven implied volatility and ARCH-models pertaining to Nasdaq100.

During Tina Modotti's time in Mexico in the 1920s, much of her photography and political activities focused on and fought for the rights of those who had been previously overlooked and marginalized, namely the indigenous people of Mexico. Many government officials, artists and intellectuals at the time believed that it was through the indigenous culture that Mexico could redeem itself and create its own national identity. Indigenismo, the philosophy that supported this claim, was of interest to Modotti and was a recurring theme throughout her photography. Following the Mexican Revolution of 1910, indigenismo appeared to be the solution to establishing this new identity that was authentically Mexican and distinct from the perceived corruption of Europe and North America. However, the principles of this theory were paradoxical in that proponents supported incorporating indigenous elements into Mexican society, but they also supposed that the only way to recreate the country was by dismissing and destroying these native cultures. Modotti was not as interested in advocating a rebuilding of Mexico as she was in promoting social equality among all races and groups of people in the country, similar to what international Marxism endorsed. Indigenismo to Modotti was more of a way to give voice to the marginalized indigenous people who had been forgotten politically, educationally and artistically for centuries. Through three phases of her photographic career in Mexico—her early phase (which included the Idols Behind Altars project), Mexican Folkways, and her work done in Tehuantepec-we can see how Modotti progressed as an indigenista artist. Although her audience varied in each of these three phases, Modotti's commitment to, and portrayal of, Mexico's indigenous culture was a central unifying theme in her work. This study argues that the photographs of Tina Modotti illustrate her concept of indigenismo by celebrating what she perceived as strong, egalitarian indigenous communities that appealed to her Marxist political philosophy. Modotti sought to counter previous distorted or exaggerated misconceptions of indigenous culture, and she tried to compensate for this lack of authenticity within the Mexican national identity and Mexican art through her photography.

Thesis (M.A.)--Miami University, Dept. of Spanish and Portguese, 2004. / Title from first page of PDF document. Includes bibliographical references (p. 66-71).

This thesis has two aims. Firstly, in order to answer the question, ‘In what sense do people see Mary as a type of the Church?’, this thesis will set up original typological models of the relationship between Mary and the Church (chapter 1). It will then demonstrate how and why an eschatological element came to be present in these models (chapter 2).It will be a contention of this thesis that looking at the Mario-ecclesial discussions set out in chapters 3 and 4 through these typological models will allow a greater depth of analysis. The models allow one to discern differences between and nuances in various views of the relationship between Mary and the Church that would be impossible to discern if one were using just the language of ‘type’. Secondly the thesis will show how each Mario-ecclesial discussion has been affected by the socio-political context of the time. Specifically, the thesis will analyse the Mario-ecclesial discussions of the patristic, medieval and modern periods in the light of the typological models. In chapter 1, the patristic Mario-ecclesiologies of Irenaeus and Ambrose will be considered. In chapter 2, Bernard of Clairvaux will be used to analyse the eschatological nature of the Mario-ecclesiology in the medieval period. In chapter 3, the contrasting Mario-ecclesiologies of the Second Vatican Council and Hans Urs von Balthasar will be compared. In chapter 4, it will be suggested that John Paul’s model of the Mario-ecclesial relationship was based on his eschatological vision for the Church and the role that Mary plays in that future which is both imminent and already realised. This thesis will demonstrate that by using the typological models in these periods a greater depth of analysis can be achieved. This will be particularly true of the complex and nuanced discussions on Mary in the Roman Catholic Church in the twentieth century. This analysis will culminate in the particular Mariology of John Paul II.