The aim of this work is to design a safety module for promotional robot FEEC BUT robot, which is based on evaluation kit RDK-IDM-SBC. The security module allows authorized persons control different parts of the robot (monitors, computers and subsystems included in the robot).

Voice over Internet Protocol (VoIP) is a service that has recently gained a lot of attention from the telecommunications (telecom) world since both Internet service providers (ISPs) and telecommunications operators have realized the important advantages that it can offer. Although traditional telephony is well established both in the telecom world and in our daily lives, VoIP is now competing with it by offering cost savings, simplicity, and introducing new ways of communicating. Internet service providers have already started deploying efficient VoIP services for their customers and carriers are transforming their network infrastructures in order to be able to accommodate the requirements of VoIP traffic. There are a lot of essential factors that both providers and carriers have to take into consideration in order to efficiently build and operate VoIP technologies. Proper service planning and well-established monitoring and troubleshooting procedures are vital for successful VoIP service. This thesis focuses on commercial VoIP implementation at the carrier’s side and investigates how a carrier can efficiently maintain and troubleshoot their VoIP infrastructure so as to comply with the Service Level Agreements (SLAs) they have signed with their customers (ISP providers), as well as analyses proactive actions that can betaken for minimizing the resources required for customer support. As an outcome, this thesis presents efficient ways of network planning and monitoring, as well as it provides conclusions regarding what are the efficient methods for troubleshooting the carrier’s VoIP products inboth technical and organizational level. / Röst över Internet Protokoll (VoIP) är en tjänst som nyligen har fått ökad uppmärksamhet inom telekommunikations (telecom) branschen eftersom att både Internetleverantörer (ISPs) och telecom operatörer har insett vilka fördelar som tjänsten erbjuder. Även om traditionell telefoni är väl etablerad i både telecombranschen och vår vardag, så kan VoIP konkurrera genom att erbjuda kostnadsbesparingar, förenkling, och introducera nya sätt att kommunicera på. IP leverantörer har redan påbörjat lansering av effektiva VoIP tjänster till sina kunder och telecom carriers bygger om sin nätverksstruktur för att möta kraven av VoIP traffik. Det finns många faktorer att bejaka för både IP leverantörer och telecom carriers för att effektivt bygga och driva VoIP nätverk. Noggrann produktplanering och väletablerad övervakning samt felsökningsprocedurer är en vital del i en framgångsrik VoIP tjänst. Denna avhandling fokuserar på VoIP implementering hos en telecom carrier och hur en telecom carrier effektivt kan underhålla och felsöka VoIP infrastruktur för att möta de servicenivåavtal de har skrivit med sina kunder (IP leverantörer), samt analysera det förebyggande åtgärder som kan tas för att minimera de resurser som behövs till kundtjänst. Denna avhandling presenteras effektiva tillvägagångssätt för planering och övervakning samt erbjuder effektiva,teknisk och organisationella metoder för felsökning av en telecom carriers VoIP produkter.

<p>This diploma work was performed because the company Sveriges BostadsrättsCentrum, with the abbreviation SBC, had a need to gain insight into how changes in the Work Environment Act and related regulations which took effect January 1, 2009 affecting their work with the work environment. The changes mean that the client may hand over his work environment responsibilities to a contractor and that he has to select so-called building work environment co-ordinators. At SBC they are working as representatives for tenant-owner's association when a construction is about to be carried out. The purpose was to ascertain how changes may affect the work at SBC. The diploma work intends to educate the staff at SBC how work with the work environment would look like if they met the regulatory requirements. The main issue that the diploma work deals with is whether SBC has the responsibility to select a building work environment co-ordinator for the planning and projecting before the contractor takes over responsibility for the work environment. Questions were answered by information from the Work Environment Act, AFS 1999:3 and other material from the Work Environment Authority. Two interviews with staff at the Work Environment Authority were also held. One of the conclusions drawn from the diploma work is that it’s the client who will select a building work environment co-ordinator for the planning and projecting. That should be done as soon as the planning and projecting has begun. The planning and projecting usually begins before the main contractor takes over responsibility for the work environment as the employee. It is not clear that SBC will take on the client’s responsibility to select a building work environment co-ordinator for the planning and projecting in the early planning, before the contractor takes on responsibility and there are several ways to do this.</p>

This diploma work was performed because the company Sveriges BostadsrättsCentrum, with the abbreviation SBC, had a need to gain insight into how changes in the Work Environment Act and related regulations which took effect January 1, 2009 affecting their work with the work environment. The changes mean that the client may hand over his work environment responsibilities to a contractor and that he has to select so-called building work environment co-ordinators. At SBC they are working as representatives for tenant-owner's association when a construction is about to be carried out. The purpose was to ascertain how changes may affect the work at SBC. The diploma work intends to educate the staff at SBC how work with the work environment would look like if they met the regulatory requirements. The main issue that the diploma work deals with is whether SBC has the responsibility to select a building work environment co-ordinator for the planning and projecting before the contractor takes over responsibility for the work environment. Questions were answered by information from the Work Environment Act, AFS 1999:3 and other material from the Work Environment Authority. Two interviews with staff at the Work Environment Authority were also held. One of the conclusions drawn from the diploma work is that it’s the client who will select a building work environment co-ordinator for the planning and projecting. That should be done as soon as the planning and projecting has begun. The planning and projecting usually begins before the main contractor takes over responsibility for the work environment as the employee. It is not clear that SBC will take on the client’s responsibility to select a building work environment co-ordinator for the planning and projecting in the early planning, before the contractor takes on responsibility and there are several ways to do this.

El síndrome de Budd-Chiari (SBC) es una enfermedad poco frecuente que no obstante afecta a población joven con una alta morbimortalidad. A pesar del gran esfuerzo investigador realizado, quedan aún por hacer avances en el conocimiento fisiopatológico y en el ámbito terapéutico, ambos estrechamente vinculados, que mejoren el pronóstico de estos enfermos. Sin embargo, la baja incidencia de esta enfermedad ha dificultado la realización de estudios prospectivos y la obtención de resultados de inequívoca interpretación.Mediante esta tesis, se estudian dos aspectos de esta entidad: uno fisiopatológico, cuyo objetivo es profundizar en el conocimiento de las consecuencias hemodinámicas sistémicas derivadas de la obstrucción al flujo venoso hepático; y otro terapéutico, que consiste en evaluar la utilidad de las prótesis recubiertas de politetrafluoroetilino (PTFE) en el TIPS comparándolas con prótesis no recubiertas con el objetivo de contrastar su eficacia. Para llevar a cabo el primer estudio de esta tesis doctoral, se evaluan parámetros hemodinámicos sistémicos, sistemas neurohumorales vasoactivos y expansión de la volemia plasmática en enfermos con SBC, y en segundo lugar se comparan los resultados hemodinámicos de enfermos con SBC frente a una cohorte de enfermos cirróticos con hipertensión portal sinusoidal. El hallazgo más notable es que los enfermos con SBC grave presentan activación de los sistemas neurohumorales vasoactivos con actividad de renina plasmática elevada y niveles elevados de aldosterona y norepinefrina. Esta activación también se acompañó de un aumento de la volemia plasmática. Sin embargo, y a diferencia de lo que ocurre en enfermos con hipertension portal sinusoidal y presinusoidal, los enfermos con SBC no presentan descenso de las resistencias vasculares sistémicas totales, al menos en fases iniciales, lo cual sugiere que otros mecanismos fisiopatológicos son responsables de la activación de sistemas vasoactivos y de la expansión de la volemia. En la cohorte de enfermos estudiada el gasto cardiaco permanece en rangos normales. Es probable que la ausencia de anemia y la disminución del retorno venoso influyan evitando un aumento del gasto cardiaco a pesar del aumento en la volemia plasmática.En el segundo estudio se parte de la hipótesis de que el empleo de las nuevas prótesis recubiertas de PTFE, utilizadas para el TIPS de enfermos con SBC, se asocia a una menor tasa de disfunciones y disminuyen las complicaciones asociadas, mejorando los resultados obtenidos con prótesis no recubiertas. Para ello se compara los efectos de las distintas prótesis sobre la tasa de disfunción del TIPS y eventos clínicos. En segundo lugar, se compara el número de reintervenciones (angioplastias, restenting) necesarias para mantener el shunt permeable y número total de prótesis utilizadas; número de ingresos y días de hospitalización durante el seguimiento en ambos grupos. Por ultimo, se evalúa la seguridad y eficiencia del empleo de prótesis recubiertas en enfermos con SBC que requieren un TIPS. Se demuestra que en los pacientes con SBC grave el TIPS constituye un tratamiento seguro y eficaz que controla los síntomas de la enfermedad refractaria a tratamiento médico. Las nuevas prótesis recubiertas de PTFE en el TIPS mejoran la tasa de disfunción por estenosis o trombosis con respecto a las prótesis no recubiertas. A su vez, la menor tasa de disfunción observada repercute en un menor número de reintervenciones, ingresos hospitalarios y días de estancia hospitalaria. En base a los resultados de este segundo estudio las prótesis recubiertas de PTFE deberían ser la primera opción al utilizar el TIPS en enfermos con SBC. / Budd-Chiari syndrome (BCS) is an uncommon liver disease defined as an obstruction to hepatic venous outflow. The obstruction of the hepatic venous outflow leads to sinusoidal congestion, centrilobular necrosis, fibrosis and portal hypertension with severe complications. In order to deepen in the BCS, the first study address the hemodynamic changes that take place in BCS, which are well described in cirrhotic patients with sinusoidal portal hypertension, but remain uncertain in Budd-Chiari patients with postsinusoidal portal hypertension. In a large series of patients with advanced BCS, the systemic circulation, the vasoactive neurohumoral systems and plasma volume were assessed and compared with the systemic hemodynamics of those obtained in a group of cirrhotic patients. BCS patients had mean systemic, cardiopulmonary pressures and cardiac index within normal range, but significantly different from that of a group of cirrhotic patients. Despite most of the BCS patient exhibited normal systemic vascular resistance, BCS patients had activation of the neurohumoral vasoactive systems and plasma volume expansion. In conclusion, patients with BCS had activation of vasoactive neurohumoral systems and expanded plasma volume. This was observed despite these patients did not show increased CI and systemic vasodilation, which is in marked contrast with what is observed in patients with cirrhosis of the liver.The second study focus on the treatment of BCS patients with portal hypertension, with transjugular intrahepatic portosystemic shunts (TIPS) using new developed stents. The polytetrafluoroethylene (PTFE)-covered stents have demonstrated to decrease shunt dysfunction in cirrhosis. Therefore, the aim of this study was to analyze and compare the incidence of TIPS dysfunction in patients treated with bare stents and covered stents. After a median follow-up period of nearly 2 years, 87% of patients receiving bare stents had TIPS dysfunction vs. 33% receiving PTFE-covered stents (actuarial rates of primary patency 19 % vs. 67 % at 1 year). Futhermore, the number of additional interventional procedures to maintain TIPS patency and clinical relapses were significantly greater in the bare stent than in the PTFE-covered stent group. In conclusion, our findings suggest that PTFE-covered stents should be preferred in these patients.

This master thesis goes into problematics of design of an electronic device control system and its realization. First of all its overall conception is specified and potential hardware platforms are analyzed afterwards. Based on this analysis the system’s final conception is drawn up, the device’s circuit layout is created and finally a functional prototype is manufactured. The later part of this thesis describes the software accessories and tools. The principles of a chosen operating system, management application and webbased interface are described along with the problems of authentization to solve. The proposed solutions for the authentization-specific tasks gave rise to the final implementation of the authentization methods and techniques.

The need for security is crucial in Telephony over IP (ToIP). Secure protocols have been designed as well as specific devices to fulfill that need. This master thesis examines one of such devices called Session Border Controller (SBC), which can be compared to reverse proxies for ToIP. The idea is to apply message filters to increase security. This thesis presents the reasons of SBC existence, based on the security weaknesse sa ToIP network can show. These reasons are then used to establish a list of features which can be expected from a SBC and discuss its ideal placement in a ToIP network architecture. A test methodology for SBCs is established and used on the free software Kamailio as an illustration. Following this test, improvements of this software, regarding threats prevention and attacks detection, are presented and implemented. / Behovet av säkerhet är av avgörande betydelse i telefoni över IP (ToIP). Säkerhetsprotokoll har utformats samt särskilda enheter för att uppfylla detta behov. Detta examensarbete undersöker en av sådana enheter som kallas Session Border Controller (SBC), vilket kan jämföras med omvända proxyservrar för ToIP. Tanken är att tillämpa meddelandefilter för att öka säkerheten. Denna avhandling presenterar orsakerna till SBC existens, baserat på de säkerhets svagheter en ToIP nätverk kan visa. Dessa skäl används sedan för att upprätta en förteckning över egenskaper som kan förväntas av en SBC och diskutera dess ideal placering i en ToIP nätverksarkitektur . En testmetodik för SBC är etablerad och används på fri programvara Kamailio som en illustration. Efter detta test, förbättringar av denna programvara, om hot förebyggande och attacker upptäcka, presenteras och genomförs.

All Mobile Network Operators (MNOs) as well as international carriers are moving voice services from the legacy Public Switched Telephone Network (PSTN) to Voice over IP (VoIP). The benefit is that VoIP traffic can be easily rerouted at any moment, thus giving companies a variety of options as traffic can be rerouted to any carrier of choice leading to different Quality of Service (QoS) levels (and thus agreements) as well as different prices to choose from. With a fierce competition for the telecom companies involved in the voice traffic hubbing business, this new landscape offers not only opportunities but also opens the system to vulnerabilities. The stakes are actually quite high: If harm can be done to one of these international carriers, other companies will route away their traffic. The result will be significant financial damages for the company as well as a serious harm to its reputation. The aim of this paper is to raise awareness that internationalcarriers and in particular their VoIP traffic can be exposed to debilitating attacks to harm these systems that are critical for our everyday life. The experimentation in this project demonstrates with a hands-on example how a major carrier can be hacked and rendered useless. In particular, we craft a framework for testing the security of interconnects between MNOs and international carriers. The central point of the paper will be to demonstrate how easy it can be to attack major carriers in the market: using common open source tools without having any information in advance. Moreover, the goal is to understand how the market functions, how interconnects between companies are built, where the weaknesses are, and which solutions can thwart those threats and secure these systems.

Trata-se do processo de disseminação ou difusão de políticas públicas de cultura, a partir da análise de implantação do Programa de Valorização de Iniciativas Culturais, VAI-SBC, programa de fomento à produção cultural da prefeitura de São Bernardo do Campo, em relação com o programa homônimo e sua matriz conceitual, o Programa VAI, desenvolvido na cidade de São Paulo. Embora ambos se filiem ao mesmo campo político-ideológico, ao ser adaptado à localidade do Grande ABC, variáveis internas e externas ao programa, tais como a experiência acumulada pelos fazedores de política (policy makers), os constrangimentos impostos pela situação político-administrativa do município e as características de desenvolvimento especificas do campo cultural local influenciaram o modo como ocorreu a escolha do modelo de formulação, agindo decisivamente na construção do seu objeto e de suas diretrizes. O estudo foi realizado a partir de pesquisa de documentos, leis, imprensa comercial e oficial, programas, entrevistas, depoimentos, projetos e ações, considerando aspectos políticos, culturais, artísticos e sociais na realização da política pública de cultura / It is about the process of dissemination or diffusion of culture public policies, from the analysis of the Cultural Initiatives Valuation Program, VAI-SBC, development program to cultural production of the São Bernardo do Campos city hall, in relation to the homonym program and its conceptual basis, the VAI Program, developed on the city of São Paulo. Although both join the same political-ideological field, when being adapted to the location of Grande ABC, internal and external variables to the program, such as the accumulated experience by the policy makers, the embarrassments imposed by the political-management situation of the city hall and the development characteristics of the local cultural field, influenced the way how the choice of the formulation model occurred, acting decisively on the construction of its object and its guidelines. The study was based on research on documents, laws, commercial and official press, programs, interviews, testimonies, projects and actions, considering politcal, cultural, artistic and social aspects in the accomplishment of the public policy of culture

Trata-se do processo de disseminação ou difusão de políticas públicas de cultura, a partir da análise de implantação do Programa de Valorização de Iniciativas Culturais, VAI-SBC, programa de fomento à produção cultural da prefeitura de São Bernardo do Campo, em relação com o programa homônimo e sua matriz conceitual, o Programa VAI, desenvolvido na cidade de São Paulo. Embora ambos se filiem ao mesmo campo político-ideológico, ao ser adaptado à localidade do Grande ABC, variáveis internas e externas ao programa, tais como a experiência acumulada pelos fazedores de política (policy makers), os constrangimentos impostos pela situação político-administrativa do município e as características de desenvolvimento especificas do campo cultural local influenciaram o modo como ocorreu a escolha do modelo de formulação, agindo decisivamente na construção do seu objeto e de suas diretrizes. O estudo foi realizado a partir de pesquisa de documentos, leis, imprensa comercial e oficial, programas, entrevistas, depoimentos, projetos e ações, considerando aspectos políticos, culturais, artísticos e sociais na realização da política pública de cultura / It is about the process of dissemination or diffusion of culture public policies, from the analysis of the Cultural Initiatives Valuation Program, VAI-SBC, development program to cultural production of the São Bernardo do Campos city hall, in relation to the homonym program and its conceptual basis, the VAI Program, developed on the city of São Paulo. Although both join the same political-ideological field, when being adapted to the location of Grande ABC, internal and external variables to the program, such as the accumulated experience by the policy makers, the embarrassments imposed by the political-management situation of the city hall and the development characteristics of the local cultural field, influenced the way how the choice of the formulation model occurred, acting decisively on the construction of its object and its guidelines. The study was based on research on documents, laws, commercial and official press, programs, interviews, testimonies, projects and actions, considering politcal, cultural, artistic and social aspects in the accomplishment of the public policy of culture