This document provides information about Cisco NetFlow technology and its usage to protect networks from different types of attacks. Part of the document is a summary of common security risks in term of their detection on network and transport layer. There are specified characteristics of NetFlow data containing samples of security risks. On the basis of these characteristics, an application for detection these risks is designed and implemented.

Ce travail est un défrichement qui cherche à explorer les usages de la voix-over dans le cinéma documentaire. Questionnant sa nature éminemment hétérogène, cette étude de la voix dans le registre over portera d'abord sur sa matérialité dans le champ du sonore, avant de s'attarder à ses fonctions dans l'élaboration du discours documentaire. Comme il s'agit d'une entreprise nouvelle, il y aura de nombreux aller-retours entre les très rares études menées sur la voix-over–presque exclusivement circonscrites au cinéma de fiction (Kozloff, Châteauvert, Boillat)–et différents travaux théoriques et critiques traitant des enjeux de la représentation du réel dans le cinéma documentaire (Nichols, Niney, Gauthier). Cela permettra de mettre en lumière le cas du cinéma documentaire où la voix-over occupe des fonctions beaucoup moins narratives que discursives. Il sera vu comment cette parole (comme occurrence sonore et comme productrice de sens) est posée par-dessus (over) les images, entretenant avec elles des rapports d'interdépendance parfois convergents, mais parfois divergents. On comprendra aussi que dans son usage spécifiquement documentaire, la voix-over contribue à rendre plus manifeste la prise de parole d'un sujet sensible et pensant qui offre ni plus ni moins une interprétation du monde. Aussi, ce mémoire est un diptyque. Le présent texte doit donc être considéré en correspondance avec le film documentaire D'où, chose étonnante, rien ne s'en suit, qui constitue le deuxième volet de l'ouvrage. Mots clés : cinéma, documentaire, voix-over, parole, son. / This exploratory thesis examines the various practices of voice-over in documentary film. Questioning the highly heterogeneous nature of voice in the over register, I first discuss it with respect to the material aspects of sound before examining it’s functions in the elaboration of documentary discourse. Because this is a new undertaking, I will travel back- and-forth between the rare studies concerning voice-over–almost exclusively confined to fiction film (Kozloff, Châteauvert, Boillat)–and works proposing different theoretical and critical views on the representation of reality in documentary films (Nichols, Niney, Gauthier). This will help bring to light the specificities of documentay cinema where voice- over is used less towards the production of a narrative and more towards the articulation of discourse. With the help of examples from a range of documentary films, I will show how speech (both as an occurrence of sound and as a means of producing meaning) is placed over the images, in a sometimes converging, but sometimes diverging, interdependent relationship. This will help demonstrate that the specific use of voice-over in documentary film makes manifest the act of speech of the sensitive, thinking subject who offers, no more no less, than an interpretation of the world. Also, this thesis is a diptych and needs to be considered in correspondence with the documentary film D'où, chose étonnante, rien ne s'en suit that constitutes second part of the work. Keywords : cinema, documentary, voice-over, speech, sound.

Voice-over translation (or “audio subtitles”) is the only audio-visual translation (AVT) used for feature-length films on Polish television. Since the reader (lektor) only partially overrides original dialogues and some parts of the actors’ speech are clearly audible, it can be considered as marginal L2 exposure. The aim of this study is to investigate the attitudes of Polish speakers of English towards voice-over translated television and to determine if TV shows and films with a lektor can be a source of incidental language acquisition. The study consists of two parts, a survey and an experiment. The survey investigated the attitudes of Polish speakers of English to different types of AVT, especially their opinions about the influence of voice-over translated TV shows on their English proficiency. The data reveals that Polish speakers of English have rather negative opinions about this AVT and numerous instances of unfaithful translation are easily spotted by them, which creates an image of unprofessional and inaccurate AVT. They seem not to consider films with a lektor as L2 exposure and tend to think that introducing subtitles to television would improve the L2 competence in Poland. However, the informants admitted being able to spot unfaithful translation, meaning that they pay attention to the foreign language in the background. The experiment was conducted to examine the possibility of incidental language acquisition from voice-over translated TV shows. 26 high school students, Polish learners of English watched 4 clips with voice-over translation with instances of unfaithful translation. The study has empirically proven that Polish learners of English are able to spot the differences between the original dialogue and its translation. Thus, watching voice-over television programming can be considered L2 exposure.

Unified Communications solutions bring together several communication modes, technologies, and applications in order to answer businesses’ and individuals’ growing need for simpler, faster, and more effective communications means.  Although many hardware-based products allow the integration of telephony within a computer network environment, telephony features of software-based unified communications solutions are seldom used, which limits their effectiveness or requires another solution to be used jointly. This master’s thesis project aims to demonstrate that unified communications solutions based on Microsoft Lync Server 2013 can effectively address a wide variety of business scenarios, including a traditional telephony system replacement.  The first part of this master’s thesis introduces background knowledge about unified communications and associated technologies, as well as the different components of the selected unified communication solution. The case study presented in this thesis is the first large-scale Lync 2013 deployment with a complete telephony offering in France. The presentation follows the complete deployment process, starting from the analysis of the client’s needs to the solution design, construction, and validation. This project demonstrated the suitability of Lync 2013 as a telephony system replacement. However, the transition from a classic telephony solution to a unified communications solution can be a technical challenge. An essential step in making this transition successful was to take the users’ needs into account. It was also essential to accompany these users throughout the transition. / Samordnad kommunikation (engelska: unified communications) lösningar sammanföra flera kommunikationssätt, teknik och tillämpningar för att besvara företags och individers växande behovet av enklare, snabbare och mer effektivt kommunikationsmedel. Även många hårdvara-baserade produkter tillåter integration av telefoni inom ett datornätverk miljö, telefoni funktioner mjukvarubaserad Samordnad kommunikation-lösningar används sällan, vilket begränsar deras effektivitet eller kräver en annan lösning för att användas gemensamt.  Detta examensarbete syftar till att visa att samordnad kommunikation lösningar baserade på Microsoft Lync Server 2013 kan effektivt ta itu med en mängd olika scenarier. Den första delen av detta examensarbete introducerar bakgrundskunskap om samordnad kommunikation och tillhörande teknologier liksom de olika komponenterna i den valda samordnad kommunikation lösning. Fallstudien som presenteras i denna avhandling är den första storskaliga Lync 2013 utplacering med en komplett telefoni erbjuder i Frankrike. Den presentationen följer hela implementeringsprocessen, från analys av kundens kraven till utformning, konstruktion, och validering. Detta projekt visade tillförlitligheten i Lync 2013 som telefoni ersättning men intyga att även övergången från en klassisk telefoni lösning på ett samordnad kommunikation-lösning kan vara en teknisk utmaning, ta användarnas behov i beaktande och medföljande användare genom övergången är kritisk. / Les solutions de communications unifiées rassemblent différents modes de communications, technologies, et applications pour répondre aux besoin croissant des entreprises et individus de méthodes de communications plus simples, rapides et efficaces. Bien que de nombreuses solutions matérielles permettent l’intégration de la téléphonie à un réseau informatique, les fonctions de téléphonie des solutions logicielles sont rarement utilisées, ce qui limite leur efficacité ou nécessite l’utilisation conjointe d’autres solutions. Ce projet a pour but de démontrer l’efficacité des solutions de communications unifiées basées sur Microsoft Lync 2013 à répondre à une grande variété de besoins professionels, dont le remplacement d’un système de téléphonie traditionnel. La premiére partie de ce mémoire introduit les notions nécessaires sur les communications unifiées et les technologies associées, ainsi que les différents composants de la solution de communications unifiées choisie. L’étude de cas présentée décrit le premier déploiement majeur de Lync Server 2013 comportant une offre de téléphonie complète en France, et suit le processus de déploiement complet, de l’analyse des besoins client à la validation du projet, en passant par la conception, la construction et le test. Ce projet démontre l’aptitude de Lync en temps que sysème de téléphonie complet. Cependant la transition d’un système traditionnel à une solution de communications unifiées peut présenter des défis techniques, et il est essentiel de prendre en compte les besoins utilisateurs ainsi que de les accompagner durant la transition.

Informationen des Universitätsrechenzentrums mit Jahresrückblick 2008 zu den aktuellen Projekten und Diensten des URZ

Informationen des Universitätsrechenzentrums mit Jahresrückblick 2008 zu den aktuellen Projekten und Diensten des URZ:Jahresrückblick 2008 Softwareausstattung der Ausbildungspools Kurzinformationen Software-News

Les réseaux maillés sans fil (RMSF), grâce à leurs caractéristiques avantageuses, sont considérés comme une solution efficace pour le support des services de voix, vidéo et de données dans les réseaux de prochaine génération. Le standard IEEE 802.16-d a spécifié pour les RMSF, à travers son mode maillé, deux mécanismes de planifications de transmission de données; à savoir la planification centralisée et la planification distribuée. Dans ce travail, on a évalué le support de la qualité de service (QdS) du standard en se focalisant sur la planification distribuée. Les problèmes du système dans le support du trafic de voix ont été identifiés. Pour résoudre ces problèmes, on a proposé un protocole pour le support de VoIP (AVSP) en tant qu’extension au standard original pour permettre le support de QdS au VoIP. Nos résultats préliminaires de simulation montrent qu’AVSP offre une bonne amélioration au support de VoIP. / Wireless mesh networks (WMNs), because of their advantageous characteristics, are considered as an effective solution to support voice services, video and data in next generation networks. The IEEE 802.16-d specified for WMNs, through its mesh mode, two mechanisms of scheduling data transmissions; namely centralized scheduling and distributed scheduling. In this work, we evaluated the support of the quality of service (QoS) of the standard by focusing on distributed scheduling. System problems in the support of voice traffic have been identified. To solve these problems, we proposed a protocol for supporting VoIP, called Assisted VoIP Scheduling Protocol (AVSP), as an extension to the original standard to support high QoS to VoIP. Our preliminary simulation results show that AVSP provides a good improvement to support VoIP.

Šio darbo tema - Internetinės telefonijos teisinis reglamentavimas Lietuvoje. Šiuolaikinis Internetinės telefonijos populiarumas ne tik sukelia vartotojų, bet ir reguliuotojų suinteresuotumą. Būtent ji pastaruoju metu kelia daugybę diskusijų tarptautiniuose bei nacionalinėse forumuose, kurių vienas pagrindinių aspektų – tinkamo Internetinės telefonijos reguliavimo sukūrimas. Pagrindinis baigiamojo magistrinio darbo tikslas – išnagrinėti Internetinės telefonijos reguliavimą tarptautiniu ir Lietuvos mastu, bei apžvelgti su juo susijusias problemas. Darbe nagrinėjama užsienio šalių praktika, remiantis kuria iškeliamos pagrindinės Lietuvos IP telefonijos teisinio reguliavimo gairės. Būtent: telefono numerių skyrimas, numerio perkeliamumas, skambučiai į pagalbos tarnybas, skambučiai kitais telefono numeriais, IP telefonijos skambučių saugumas, bei aprašomos su jų įgyvendinimu susijusios problemos. / The topic of the paper is Legal Reglamentation of VoIP Telephony in Lithuania. VoIP telephony’s nowadays spread and popularity scores an interest and debates not only between it’s consumers but also between legal regulators. VoIP is the main and rather often discussed topic of international and national forums, which aim to develop its proper regulation. The main aim of this paper is to internationally analyse VoIP’s legal regulation and to survey its associated problems. Foreign countries’ experience helps to formulate basic guidelines of Lithuanian VoIP legal regulation. Namely: numbering, numbers portability, calls to emergency services, calls to other telephone numbers, safety of VoIP calls and its associated problems.

Les réseaux maillés sans fil (RMSF), grâce à leurs caractéristiques avantageuses, sont considérés comme une solution efficace pour le support des services de voix, vidéo et de données dans les réseaux de prochaine génération. Le standard IEEE 802.16-d a spécifié pour les RMSF, à travers son mode maillé, deux mécanismes de planifications de transmission de données; à savoir la planification centralisée et la planification distribuée. Dans ce travail, on a évalué le support de la qualité de service (QdS) du standard en se focalisant sur la planification distribuée. Les problèmes du système dans le support du trafic de voix ont été identifiés. Pour résoudre ces problèmes, on a proposé un protocole pour le support de VoIP (AVSP) en tant qu’extension au standard original pour permettre le support de QdS au VoIP. Nos résultats préliminaires de simulation montrent qu’AVSP offre une bonne amélioration au support de VoIP. / Wireless mesh networks (WMNs), because of their advantageous characteristics, are considered as an effective solution to support voice services, video and data in next generation networks. The IEEE 802.16-d specified for WMNs, through its mesh mode, two mechanisms of scheduling data transmissions; namely centralized scheduling and distributed scheduling. In this work, we evaluated the support of the quality of service (QoS) of the standard by focusing on distributed scheduling. System problems in the support of voice traffic have been identified. To solve these problems, we proposed a protocol for supporting VoIP, called Assisted VoIP Scheduling Protocol (AVSP), as an extension to the original standard to support high QoS to VoIP. Our preliminary simulation results show that AVSP provides a good improvement to support VoIP.

Submitted by Gisele Isaura Hannickel (gisele.hannickel@fgv.br) on 2012-04-24T18:53:49Z No. of bitstreams: 1 120423 Master Thesis FGV.pdf: 3697873 bytes, checksum: f3ccbecacf430eaee0f0606f9daa9f36 (MD5) / Approved for entry into archive by Eliene Soares da Silva (eliene.silva@fgv.br) on 2012-04-25T15:52:36Z (GMT) No. of bitstreams: 1 120423 Master Thesis FGV.pdf: 3697873 bytes, checksum: f3ccbecacf430eaee0f0606f9daa9f36 (MD5) / Made available in DSpace on 2012-04-25T15:54:46Z (GMT). No. of bitstreams: 1 120423 Master Thesis FGV.pdf: 3697873 bytes, checksum: f3ccbecacf430eaee0f0606f9daa9f36 (MD5) Previous issue date: 2012-04-23 / Internet Telephony (VoIP) is changing the telecommunication industry. Oftentimes free, VoIP is becoming more and more popular amongst users. Large software companies have entered the market and heavily invest into it. In 2011, for instance, Microsoft bought Skype for 8.5bn USD. This trend increasingly impacts the incumbent telecommunication operators. They see their main source of revenue – classic telephony – under siege and disappear. The thesis at hand develops a most-likely scenario in order to determine how VoIP is evolving further and it predicts, based on a ten-year forecast, the impact it will have on the players in the telecommunication industry.The paper presents a model combining Rogers’ diffusion and Christensen’s innovation research. The model has the goal of explaining the past evolution of VoIP and to isolate the factors that determine the further diffusion of the innovation. Interviews with industry experts serve to assess how the identified factors are evolving.Two propositions are offered. First, VoIP operators are becoming more important in international, corporate, and mobile telephony. End-to-end VoIP (IP2IP) will exhibit strong growth rates and increasingly cannibalize the telephony revenues of the classic operators. Second, fix-net telephony in SMEs and at home will continue to be dominated by the incumbents. Yet, as prices for telephony fall towards zero also they will implement IP2IP in order to save costs. By 2022, up to 90% of the calls will be IP2IP. The author recommends the incumbents and VoIP operators to proactively face the change, to rethink their business strategies, and to even be open for cooperation.