- Kolloq - lists.ibr.cs.tu-bs.de

Vortrag am 19.10.2015, 13:00 Uhr
by Informatik-Kolloquium 05 Oct '15

05 Oct '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein. Dr. Jingyuan Cheng: Smart Textile for Wearable and Ubiquitous Computing Beginn: 19.10.2015, 13:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 1. OG, Hörsaal M 161 Webseite: http://www.ibr.cs.tu-bs.de/cal/kolloq/2015-10-19-cheng.html Kontakt: Prof. Dr.-Ing. Marcus A. Magnor Textile enjoys a high coverage rate both time-wise and space-wise in everyone’s life. Utylizing this “worn by default”, smart textile becomes a unique resource for information retrieval and feedback in (not only) wearable computing. This talk presents mainly 3 novel sensing and feedback modalities using texile and their application for some key topics in wearable and ubiquitous computing, including: human computer interface, monitoring activities of daily living, nutrition, sport and etc.

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Vortrag am 16.10.2015, 15:00 Uhr
by Informatik-Kolloquium 02 Oct '15

02 Oct '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein. Daniel Martí, F-Droid Project: F-Droid: Android without Google Play Beginn: 16.10.2015, 15:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 1. OG, Hörsaal M 161 Webseite: http://www.ibr.cs.tu-bs.de/cal/kolloq/2015-10-16-marti.html Kontakt: Dominik Schürmann F-Droid is an app distribution platform for Android. It is based on the repository system known from Linux distros - anyone can set up a repository with apps, and users can download and install apps from it. The main difference between F-Droid and other app stores alternative to Google Play is that F-Droid is completely Free Software. This makes the project a key component of Android as an open source and decentralized system. Our main repository has over 1,500 apps with more than 60,000 regular users. This talk will mainly focus on how the Android client is written and all the challenges it faces. For example: How do you make it scale to thousands of apps at a time? How can you make it light on network usage? How can you keep it secure? How can it be a package manager on its own? (regular apps can't do this)

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Erinnerung: Vortrag am 24.07.2015, 15:00 Uhr
by Informatik-Kolloquium 23 Jul '15

23 Jul '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein. PhD Amnon Shabo, Haifa University, Israel: Translational & Interoperable Health Infostructure - The Servant of Three Masters Beginn: 24.07.2015, 15:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 1. OG, Hörsaal M 161 Webseite: http://www.ibr.cs.tu-bs.de/cal/kolloq/2015-07-24-shabo.html Kontakt: Prof. Dr. Reinhold Haux Overcoming major barriers of translational medicine is heavily dependent on streamlining the health information collection, organization, storage, retrieval, analysis and exchange among all stakeholders. However, the health arena is still highly fragmented into many silos of information that cannot interoperate easily, as well as into services that cannot be easily integrated to achieve more ambitious goals of analytics. To this end, it is beneficial to have a translational health info-structure (THIS) that is ‘a servant of three masters’: biomedical research, clinical practice and most importantly - the individuals whose health information is being processed in THIS. The translational nature of THIS is made possible thanks to the following principles: (*) A warehousing—marts architecture, where warehousing of data in its richest representation is coupled with multiple marts optimized per usage. Warehousing of source data is based on internationally recognized information standards, which are dynamically constrained to create information models that fit various needs of both bioinformatics and healthcare, as well as interoperability among various THIS systems and other stakeholders; (*) Dispersed data sets of an individual are integrated into a single and coherent electronic health record that is interoperable and longitudinal (iEHR). The iEHR embeds clinical, environmental and biological data and thus (1) being a better input to analytics and (2) facilitates analytics tooling integration; (*) The iEHR is a standard payload for interoperability and can also be better controlled by the individual due to its transferability to the new generation of independent health record systems where data protection and role-based access control mechanisms are practiced with a patient-centric approach. A reference implementation that followed a few of the aforementioned design principles will be presented, based on the Hypergenes project (an EU-funded funded GWAS on essential hypertension). Short bio: Amnon Shabo (Shvo), PhD, specializes in health informatics and worked at IBM Research Lab in Haifa in years 2000-2014. He co-founded and chaired the Medical Informatics Community in IBM Research and headed the IBM worldwide program on healthcare & life Sciences standards. Amnon established and chairs two professional work groups: (1) the IMIA Work Group on Health Record Banking and (2) the EFMI Work Group on Translational Health Informatics. Amnon has been leading a few standardization activities: he established and co-chairs the HL7 Clinical Genomics Work Group and is a co-editor of the Clinical Document Architecture (CDA), Continuity of Care Document (CCD), the Family Health History (Pedigree) and the Genetic Testing Report (GTR) standards. Amnon specializes in longitudinal and cross-institutional Electronic Health Records and is a pioneer of the Independent Health Record Banks vision. He is currently a Research Fellow at the Department of Information Systems, University of Haifa and can be contacted at amnon.shvo(a)gmail.com.

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Vortrag am 24.07.2015, 15:00 Uhr
by Informatik-Kolloquium 10 Jul '15

10 Jul '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein. PhD Amnon Shabo, Haifa University, Israel: Translational & Interoperable Health Infostructure - The Servant of Three Masters Beginn: 24.07.2015, 15:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 1. OG, Hörsaal M 161 Webseite: http://www.ibr.cs.tu-bs.de/cal/kolloq/2015-07-24-shabo.html Kontakt: Prof. Dr. Reinhold Haux Overcoming major barriers of translational medicine is heavily dependent on streamlining the health information collection, organization, storage, retrieval, analysis and exchange among all stakeholders. However, the health arena is still highly fragmented into many silos of information that cannot interoperate easily, as well as into services that cannot be easily integrated to achieve more ambitious goals of analytics. To this end, it is beneficial to have a translational health info-structure (THIS) that is ‘a servant of three masters’: biomedical research, clinical practice and most importantly - the individuals whose health information is being processed in THIS. The translational nature of THIS is made possible thanks to the following principles: (*) A warehousing—marts architecture, where warehousing of data in its richest representation is coupled with multiple marts optimized per usage. Warehousing of source data is based on internationally recognized information standards, which are dynamically constrained to create information models that fit various needs of both bioinformatics and healthcare, as well as interoperability among various THIS systems and other stakeholders; (*) Dispersed data sets of an individual are integrated into a single and coherent electronic health record that is interoperable and longitudinal (iEHR). The iEHR embeds clinical, environmental and biological data and thus (1) being a better input to analytics and (2) facilitates analytics tooling integration; (*) The iEHR is a standard payload for interoperability and can also be better controlled by the individual due to its transferability to the new generation of independent health record systems where data protection and role-based access control mechanisms are practiced with a patient-centric approach. A reference implementation that followed a few of the aforementioned design principles will be presented, based on the Hypergenes project (an EU-funded funded GWAS on essential hypertension). Short bio: Amnon Shabo (Shvo), PhD, specializes in health informatics and worked at IBM Research Lab in Haifa in years 2000-2014. He co-founded and chaired the Medical Informatics Community in IBM Research and headed the IBM worldwide program on healthcare & life Sciences standards. Amnon established and chairs two professional work groups: (1) the IMIA Work Group on Health Record Banking and (2) the EFMI Work Group on Translational Health Informatics. Amnon has been leading a few standardization activities: he established and co-chairs the HL7 Clinical Genomics Work Group and is a co-editor of the Clinical Document Architecture (CDA), Continuity of Care Document (CCD), the Family Health History (Pedigree) and the Genetic Testing Report (GTR) standards. Amnon specializes in longitudinal and cross-institutional Electronic Health Records and is a pioneer of the Independent Health Record Banks vision. He is currently a Research Fellow at the Department of Information Systems, University of Haifa and can be contacted at amnon.shvo(a)gmail.com.

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Erinnerung: Vortrag am 30.06.2015, 18:00 Uhr
by Informatik-Kolloquium 29 Jun '15

29 Jun '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig machen auf folgenden Vortrag der GI Regionalgruppe Braunschweig aufmerksam: Prof. em. Dr.-Ing. Dr.-Ing. E.h. Roland Vollmer, emerierter Professor des Karlsruhe Institute of Technology und ehemaliger Vorsitzender der Konrad-Zuse-Stiftung: GI-Vortrag: Konrad Zuse und die Informatik Beginn: 30.06.2015, 18:00 Uhr Ort: Haus der Wissenschaft, Raum Veolia und Weitblick, Pockelsstraße 11 Webseite: http://www.lineas.de/gi-bs/ Kontakt: Anja Schaar-Goldapp, Sprecherin der GI Regionalgruppe BS Konrad Zuse (1910-1995) war der deutsche Computerpionier. Bis zum Ende der sechziger Jahre des 20. Jhs hat er aber auch eine Reihe weiterer wesentlicher Beiträge erbracht, die (im Nachhinein) der Informatik zuzurechnen sind. In diesem Vortrag soll dargelegt werden, daß er bei allem prinzipiellen Wohlwollen für die neue Disziplin eine ambivalente Haltung zu ihr einnahm. Es wird versucht werden, die Gründe dafür aufzuzeigen. Roland Vollmar liegt es sehr am Herzen, die Geschichte der Informatik lebendig zu halten. Er hat sich lange Zeit als Vorsitzender der Konrad-Zuse-Gesellschaft und als Sprecher des Präsidiumsarbeitskreises „Informatik und Geschichte“ engagiert.

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Erinnerung: Vortrag am 19.06.2015, 15:00 Uhr
by Informatik-Kolloquium 18 Jun '15

18 Jun '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein. Dr.-Ing. Andreas Reinhardt, Institut für Informatik, TU Clausthal: RoCoCo: Receiver-initiated Opportunistic Data Collection and Command Multicasting for WSNs Beginn: 19.06.2015, 15:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 1. OG, Hörsaal M 161 Webseite: http://www.ibr.cs.tu-bs.de/cal/kolloq/2015-06-19-reinhardt.html Kontakt: Prof. Dr.-Ing. Lars Wolf Many data collection protocols have been proposed to cater for the energy-efficient flow of sensor data from distributed sources to a sink node. However, the transmission of control commands from the sink to one or only a small set of nodes in the network is generally unsupported by these protocols. Supplementary protocols for packet routing and data dissemination have been developed to this end, although their energy requirements commonly thwart the low-power nature of data collection protocols. We tackle this challenge by presenting RoCoCo in this paper. It combines data collection and dissemination by extending the low-energy ORiNoCo collection protocol by means to reconfigure subsets of nodes during runtime. Synergistically leveraging existing message types, RoCoCo allows for the definition of multicast recipient groups and forwards commands to these groups in an opportunistic fashion. Relying on Bloom filters to define the recipient addresses, RoCoCo only incurs small memory and energy overheads. We confirm its feasibility by evaluating the introduced delays, command success rates, and its energy overhead in comparison to existing collection/dissemination protocols. Speaker's bio: Since November 2014, Andreas Reinhardt is interim professor and head of the distributed systems group at TU Clausthal, Germany. Prior to his appointment in Clausthal, he had been appointed as a Vice-Chancellor’s Postdoctoral Research Fellow at the University of New South Wales in Sydney, Australia. He received his Dipl.-Ing. degree in Electrical Engineering and Information Technology in 2007, and his Dr.-Ing. degree (with distinction) in 2011, both from Technische Universität Darmstadt, Germany. His main research interests include wireless sensor networks, energy informatics, and M2M communications.

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Vortrag am 30.06.2015, 18:00 Uhr
by Informatik-Kolloquium 16 Jun '15

16 Jun '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig machen auf folgenden Vortrag der GI Regionalgruppe Braunschweig aufmerksam: Prof. em. Dr.-Ing. Dr.-Ing. E.h. Roland Vollmer, emerierter Professor des Karlsruhe Institute of Technology und ehemaliger Vorsitzender der Konrad-Zuse-Stiftung: GI-Vortrag: Konrad Zuse und die Informatik Beginn: 30.06.2015, 18:00 Uhr Ort: Haus der Wissenschaft, Raum Veolia und Weitblick, Pockelsstraße 11 Webseite: http://www.lineas.de/gi-bs/ Kontakt: Anja Schaar-Goldapp, Sprecherin der GI Regionalgruppe BS Konrad Zuse (1910-1995) war der deutsche Computerpionier. Bis zum Ende der sechziger Jahre des 20. Jhs hat er aber auch eine Reihe weiterer wesentlicher Beiträge erbracht, die (im Nachhinein) der Informatik zuzurechnen sind. In diesem Vortrag soll dargelegt werden, daß er bei allem prinzipiellen Wohlwollen für die neue Disziplin eine ambivalente Haltung zu ihr einnahm. Es wird versucht werden, die Gründe dafür aufzuzeigen. Roland Vollmar liegt es sehr am Herzen, die Geschichte der Informatik lebendig zu halten. Er hat sich lange Zeit als Vorsitzender der Konrad-Zuse-Gesellschaft und als Sprecher des Präsidiumsarbeitskreises „Informatik und Geschichte“ engagiert.

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Erinnerung: Vortrag am 12.06.2015, 15:00 Uhr
by Informatik-Kolloquium 11 Jun '15

11 Jun '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein. Christian Cachin, IBM Research, Zürich: Separating Data and Control – BFT Storage with 2t+1 Data Replicas Beginn: 12.06.2015, 15:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 1. OG, Hörsaal M 161 Webseite: http://www.ibr.cs.tu-bs.de/cal/kolloq/2015-06-12-cachin.html Kontakt: Prof. Dr. Rüdiger Kapitza The overhead of Byzantine fault tolerant (BFT) storage is a primary concern that prevents its adoption in practice. The cost stems from the need to maintain at least 3t + 1 copies of the data at different storage replicas in the asynchronous model, so that t Byzantine replica faults can be tolerated. This work introduces MDStore, the first fully asynchronous BFT storage protocol that reduces the number of replicas that store the payload data to as few as 2t + 1 and maintains metadata at 3t + 1 replicas on (possibly) different servers. At the heart of MDStore lies a metadata service built upon a new abstraction called "timestamped storage." Timestamped storage allows for conditional writes (facilitating the implementation of the metadata service) and has consensus number one (making it implementable with wait-free semantics in an asynchronous system despite faults). In addition to its low replication overhead, MDStore offers strong guarantees by emulating a multi-writer multi-reader atomic register, providing wait-free termination, and tolerating any number of Byzantine readers and crash-faulty writers. Based on joint work with Elli Androulaki, Dan Dobre, and Marko Vukolić. Christian Cachin is a researcher in cryptography and security at IBM Research - Zurich. He graduated with a Ph.D. in Computer Science from ETH Zurich and has held visiting positions at MIT and at EPFL. Presently he serves as the President of the International Association for Cryptologic Research (IACR). An IEEE Fellow, ACM Distinguished Scientist, and recipient of multiple IBM Outstanding Technical Achievement Awards, he has co-authored the book "Introduction to Reliable and Secure Distributed Programming" and contributed to the OASIS Key Management Interoperability Protocol (KMIP) standard. His current research addresses the security of cloud computing, secure protocols for distributed systems, and cryptography.

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Vortrag am 19.06.2015, 15:00 Uhr
by Informatik-Kolloquium 11 Jun '15

11 Jun '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein. Dr.-Ing. Andreas Reinhardt, Institut für Informatik, TU Clausthal: RoCoCo: Receiver-initiated Opportunistic Data Collection and Command Multicasting for WSNs Beginn: 19.06.2015, 15:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 1. OG, Hörsaal M 161 Webseite: http://www.ibr.cs.tu-bs.de/cal/kolloq/2015-06-19-reinhardt.html Kontakt: Prof. Dr.-Ing. Lars Wolf Many data collection protocols have been proposed to cater for the energy-efficient flow of sensor data from distributed sources to a sink node. However, the transmission of control commands from the sink to one or only a small set of nodes in the network is generally unsupported by these protocols. Supplementary protocols for packet routing and data dissemination have been developed to this end, although their energy requirements commonly thwart the low-power nature of data collection protocols. We tackle this challenge by presenting RoCoCo in this paper. It combines data collection and dissemination by extending the low-energy ORiNoCo collection protocol by means to reconfigure subsets of nodes during runtime. Synergistically leveraging existing message types, RoCoCo allows for the definition of multicast recipient groups and forwards commands to these groups in an opportunistic fashion. Relying on Bloom filters to define the recipient addresses, RoCoCo only incurs small memory and energy overheads. We confirm its feasibility by evaluating the introduced delays, command success rates, and its energy overhead in comparison to existing collection/dissemination protocols. Speaker's bio: Since November 2014, Andreas Reinhardt is interim professor and head of the distributed systems group at TU Clausthal, Germany. Prior to his appointment in Clausthal, he had been appointed as a Vice-Chancellor’s Postdoctoral Research Fellow at the University of New South Wales in Sydney, Australia. He received his Dipl.-Ing. degree in Electrical Engineering and Information Technology in 2007, and his Dr.-Ing. degree (with distinction) in 2011, both from Technische Universität Darmstadt, Germany. His main research interests include wireless sensor networks, energy informatics, and M2M communications.

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Erinnerung: Vortrag am 05.06.2015, 15:00 Uhr
by Informatik-Kolloquium 04 Jun '15

04 Jun '15

Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein. Jun.-Prof. Dr.-Ing. Kálmán Graffi, Heinrich-Heine-Universität Düsseldorf: Sicherheit und dezentrale Kommunikation in Zeiten der Überwachung Beginn: 05.06.2015, 15:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 1. OG, Hörsaal M 161 Webseite: http://www.ibr.cs.tu-bs.de/cal/kolloq/2015-06-05-graffi.html Kontakt: Prof. Dr.-Ing. Lars Wolf Digitale soziale Netzwerke und Echtzeitkommunikationsdienste haben in den vergangenen Jahren enormes Interesse erfahren. Facebook als größtes dieser Netzwerke verbindet Milliarden von Menschen und unterstützt sie in dem Austausch im Privaten und z.T. im Beruflichen. Während des Arabischen Frühlings wurde Facebook und ähnliche Netzwerke als Hauptkommunikationsmittel genutzt um die Aktivisten zu vernetzen, Visibilität zu schaffen und eine reichhaltige Kommunikation zu ermöglichen. Vielen war aber nicht bewusst, in wie weit die Überwachung dieses Kommunikationsmittels möglich ist und tatsächlich auch durchgeführt wird. Durch die Veröffentlichungen von Edward Snowden wurde uns bewusst dass ein Großteil der Kommunikationsdienste im Internet überwacht wird. Sichere Alternativen, die die Privatsphäre der Beteiligten schützen, sind aber nicht nur im Arabischen Raum, sondern auch in vielen weiteren Ländern z.T. lebenswichtig. In diesem Vortrag präsentieren wir diese sicheren, dezentralen Alternativen und zeigen auf welche Möglichkeiten man zur sicheren Kommunikation selbst unter Totalüberwachung und sogar Einschränkungen der Internetinfrastruktur hat. Insbesondere stellen wir unsere Lösungen aus der Peer-to-Peer-Forschung und aus der Forschung zu opportunistischen Netzwerken vor. Unser Rahmenwerk für vollständig dezentrale, sichere Kommunikation und Datenhaltung nennt sich LibreSocial und ist eine Software, die es ermöglicht soziale Netzwerke zu minimalen Kosten, sicher und unüberwachbar zu betreiben. Neuste Dienste, wie Audio-Video-Chats und Groupware, aber auch bekannte Dienste wie Statusnachrichten, Fotoalben und Emails werden in der sozialen Software vereint. Ob im globalen Betrieb oder im Einsatz in Unternehmen, Datenschutz und kontrollierte Qualität sind gewährleistet. Ferner zeigen wir Möglichkeiten auf, wie Smartphones durch lokale, sichere Vernetzung in die Lage versetzt werden können, Nachrichtenkommunikation und Datenhaltung selbst ohne verfügbare Internetanbindung für ansprechende Anwendungen anbieten zu können.

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