Jorge Barbosa, PhD | November 22, 2018 | 2 pm | S.2.69

Abstract:
A heterogeneous system can be defined as a range of different system resources, which can be local or geographically distributed, that are utilized to execute computationally intensive applications. The efficiency of executing parallel applications on heterogeneous systems critically depends on the methods used to define an assignment and mapping of the workflow tasks onto resources.

Scheduling in this context is mainly divided into two main approaches: single and multiple QoS parameters. On the single QoS parameter, the execution time of a workflow application, also called makespan, has been the major concern in most of the scheduling strategies. In this talk, it will be presented a novel algorithm for time optimization that implements a look-ahead feature while keeping a quadratic time complexity.

The problem becomes more challenging when two or more QoS parameters are considered in the scheduling problem. Time, cost, energy and reliability are common QoS parameters considered in recent research work in this area. Many algorithms consider time and cost in their formulation but most of them perform: (a) optimization of one parameter constrained to the other; (b) optimization of both parameters in a bi-objective formulation; and (c) a consideration of an unlimited number of resources, in particular for cloud platforms, where the strategy to accomplish time constraints is by allocating new computational instances.

In this talk two low-time complexity algorithms for QoS based scheduling, bounded to a set of resources, will be addressed. Namely, a time optimization and budget constrained scheduling and a budget-deadline constrained scheduling algorithm.

Research topics on resource management of heterogeneous systems will be discussed, namely, energy-aware scheduling, auto-tuning and concurrent scheduling.

CV:
Jorge Barbosa obtained his MSc degree from the University of Manchester Institute of Science and Technology, in 1993, and the PhD in Electrical and Computer Engineering from Faculdade de Engenharia da Universidade do Porto (FEUP), in 2001. He is Assistant Professor at the Department of Informatics Engineering at FEUP. He has (co-)authored over 60 scientific publications (including journal/conference papers and book chapters) on subjects related to parallel algorithms, resource management, energy-aware scheduling and performance modeling for heterogeneous systems. His current research interests are related to energy-aware scheduling, data locality, auto-parallelization tools and concurrent scheduling. He is member of the Editorial Board of Elsevier Journal „Simulation Modelling Practice and Theory“.

Dr. Michael Ortner | November 23, 2018 | 2 pm| L4.1.02 (IKT-LAB)

Abstract:
In the last decade, industrial fabrication of magnetic sensors has greatly improved producing ever cheaper and more reliable sensors. Consequently magnetic sensor systems have been developed for multiple applications that include current sensors, position and orientation sensors, compass applications, geomagnetic survey and others. Specific applications in modern automobiles include e.g. shift fork position detection, speed sensors, ABS sensors, steering wheel angle sensors, gas and break padel sensors and powertrain current sensors.

It is the aim of this lecture to provide a fundamental understanding of the working principles of such sensor systems and to discuss design difficulties. Computer aided design of magnetic sensor systems based on numerical methods and analytical implementations is discussed. Practical examples from industrial projects are shown.

CV:
Michael Ortner received the degree in theoretical physics from the Technical University of Vienna and the Ph.D. degree from the Institute for Quantum Optics and Quantum Information, Innsbruck. In 2012, he started as a Researcher at the CTR Carinthian Tech Research AG Institute, working on magnetics and magnetic sensors with a focus on analytical approaches and numerical simulation.

Prof. Dr. Benjamin Rott | 8. November 2018 | 18:15 | Sterneckstraße 15, S.0.16 (Aula)

Kurzfassung:
In der Mathematikdidaktik wird das Problemlösen seit Pólyas „Schule des Denkens“ – mal mehr und mal weniger intensiv – thematisiert. Im Vortrag werden wichtige Ergebnisse entsprechender Forschung resümiert und es werden an konkreten Beispielen aktuelle Forschungsprojekte aus Deutschland erläutert, in denen es u. a. um Heurismen, ihre Wirksamkeit und Lehrbarkeit sowie um Problemlösen im Mathematikunterricht und in der Lehrerbildung geht.

Abschließend wird aus Sicht des Vortragenden beschrieben, wie nächste Schritte auf dem Gebiet der Problemlöseforschung aussehen könnten und sollten.

CV:
Benjamin Rott hat von 2001 bis 2006 Mathematik und Physik für das gymnasiale Lehramt in Oldenburg studiert und anschließend in Salzgitter das Referendariat absolviert. Von 2008 bis 2012 hat er an der Universität Hannover in Mathematikdidaktik promoviert und anschließend eine Postdoc-Stelle an der PH Freiburg angenommen. Von 2014 bis 2017 war Benjamin Rott Juniorprofessor an der Universität Duisburg-Essen und seit 2017 ist er Universitätsprofessor an der Universität zu Köln.
Die Forschungsschwerpunkte von Benjamin Rott sind das mathematische Problemlösen, Überzeugungen und Beliefs zur Mathematik sowie mathematische Begabung.

Dr. Thomas Stockhammer | November 30, 2018 | 11:00 | S.2.42

Abstract: The media landscape changes significantly over the last few years by new content formats, new service offerings, additional consumption devices and new monetization models. Think of Netflix, DAZN, Mediatheks, mobile devices, interactive content, smart TVs, Virtual and Augmented Reality, and so on. Many of these efforts have been realized by a limited usage of standards, but are standards irrelevant? Secondly, more and more services are enabled by latest mobile compute platforms enabling new services and experiences. This presentation will provide an overview some of these trends and will motivate the development of global interop standards. Specific aspects will include the move of linear TV services to the Internet (both mobile and fixed) as well recent advances on Extended Reality and immersive media trends.

Bio: Thomas Stockhammer received the Dipl.-Ing. and Dr.-Ing. degrees from the Munich University of Technology, Munich, Germany. Thomas was Visiting Researcher at Rensselear Politechnical Institute (RPI), Troy, NY, USA and University of California San Diego (UCSD), San Diego, CA, USA. After acting as cofounder and CEO of Novel Mobile Radio (NoMoR) Research for 10 years and a consultant for Siemens mobile, BenQ mobile, LG Electronics and Digital Fountain, he joined Qualcomm in 2014 as Director Technical Standards. In his different roles, he co-authored more than 200 research publications and more than 150 patents and 1000s of contributions to standardization efforts. In his day job, he is the active and has leadership and rapporteur positions in 3GPP, DVB, MPEG, IETF, ATSC, CTA, ETSI, VR Industry Forum and the DASH-Industry Forum in the area of multimedia communication, TV-distribution, content delivery protocols, immersive media representation and adaptive streaming. Among others, he leads the MPEG-I efforts in MPEG, he is the chair of the DASH-IF Technical working group, the rapporteur of the first completed 3GPP VR work as well as the chairman of the DVB CM-I group. Thomas also received the INCITS Technical Excellence Award 2013 for his MPEG DASH work and the 3GPP Excellence Ward 2017 for his work on Enhanced TV.

Dr. Ali Roshanghias | November 9, 2018 | 2:30 pm | L4.1.02 (IKT-LAB)

Abstract

In this talk the basics of micro and nano fabrication techniques will be covered. We will discuss in particular how they are carried out in a typical clean room environment. We will learn what are the differences between the front-end and back-end in MEMs microfabrication. There will be a bunch of technical terms in thin film and thick film processing of MEMS, which will be explained briefly.  We then follow up by describing the basics of the various fabrication steps such as thin film formation, lithography as well as etching. Some typical in-line and off-line characterization and testing techniques of thin films will also be introduced.

CV

Dr. Ali Roshanghias is currently a senior researcher and project manager in the field of MEMS packaging at CTR Carinthian Tech Research AG. He recieved his PhD in materials science and technology from Sharif university of technology, Iran at 2012. Afterwards he pursued his career as a post-doc fellow at Nagaoka university of technology, Japan and Vienna universtity, Austria in the field of electronic materials and packaging. In 2015 he joined the CTR Carinthian Tech Research, Austria as a material scientist in the field of heterogeneous integration technologies and MEMS/ Power packaging. He has published over 30 papers on materials synthesis and characterization and is a verified peer-reviewer of Elsevier science.

Dr. Paulo Mendes | October 17, 2018 | 10:00 | L4.1.114 – Lakeside Labs GmbH im B04.b.1

Abstract

„Today’s internet is being populated, in its fringes, by large number of devices that are wireless and/or cellular enabled. Despite the fact that such devices are often in the vicinity of each other, communication among them follows the end-to-end principle and as such, traditional data transmission approaches do not take advantage of the physical proximity of devices.

In the area of computer networks, the concept of cooperation has been applied to mitigate such effects, in different layers of the OSI stack. For instance, in wireless networks, cooperative networking techniques are being applied in OSI Layer 1 (based on diversity); in OSI Layer 2 (based on overhearing); in OSI Layer 3 (based on estimation); and in the above layers, for instance, as occurred with overlaying (e.g., P2P).

This talk is based on the research findings and contributions that the speaker has been doing to the field of cooperative networking. The talk will go over the sustainability of cooperative networking, by studying the inclusion of derived models, such as user-centric networking, in the Internet wholesale model, and by investigating the basic requirements for the success deployment of cooperative networking mechanisms, in terms of the incentives that devices need to have to participate in cooperative activities. From a pure networking perspective the talk will focus on cooperative networking mechanisms related to few-hop relaying and cooperative routing aiming to take advantage of any opportunity to communicate in intermittently connected wireless networks.

The talk will end with an overview of the research challenges to apply cooperative networking principles to the development of an Internet encompassing a huge number of embedded devices able to produce a large amount of data, where there are potential advantages in combining communication and computation in what is called in this talk “cooperative computing”. As example, the talk will focus on autonomic vehicle technology, which is being driven by advances in sensing, computing and networking technologies. On the one hand, autonomous driving on urban roads has seen significant progress in recent years. On the other hand, autonomous Unmanned Aerial Vehicles (UAVs) have received increasing interest to tackle several use-cases from environment monitoring and emergency situations, to relaying communications to isolated areas.“

Paulo Jorge Milheiro Mendes

Paulo has 20 years of experience as computer engineer and 7 years as coordinator of research teams. Paulo has an entrepreneurial spirit, with the ability to take an idea from beginning to end, while dealing with fast-moving deadlines. He has a team leadership profile with capability to gather innovation funding. In 2004 he got his Ph.D. (summa cum laude) degree in Informatics Engineering from the University of Coimbra, having performed his thesis as a visiting scholar at Columbia University, New York (2000 – 2003).  He started building his research carrier at NTT Docomo research Labs in Munich, Germany. After that we co-founded the Internet Architecture and Networking research group at INESCTEC in Oporto, Portugal (2007-2010), and the Cognitive and People Centric Computing Lab (2010 – ) in Lisbon, Portugal. His research interests are in the field of self-organised systems (e.g. swarm intelligence), cognitive networks (e.g. orchestration of distributed edge systems) and cooperative wireless networks (e.g. relaying, opportunistic networking, named-data networking). His skills include Internet protocols, wireless networks, software engineering, sensing systems, as well as programming (C, C++, Java) for Linux and Android systems. Paulo Mendes has more than 80 articles in journals, magazines, books and conference proceedings and his inventions have been protected by 14 international patents.

Prof. Maryline Hélard | September 5, 2018 | 15:00 | L4.1.01

Abstract

To meet growing demand for higher throughputs, advanced digital communication techniques based on multicarrier modulations, multiple antenna systems (MIMO) and their extension to massive MIMO (M-MIMO), powerful coding schemes or interference coordination are always under study and could be combined with solutions based on network densification and deployment of heterogeneous infrastructures.

For a number of years now,  IETR (Institut of Electronics and Telecommunications of Rennes) Labs has being developed strong expertise in communications systems with several experiments associating OFDM and MIMO in some proofs of concept.

In the first part of this talk, one of the classical precoding technique, known as Time Reversal applied to digital communications will be presented as well as its easy combination with OFDM. A second part will be dedicated to spatial modulation applied either at transmit or receive side and its possible application to IoT. For both systems, the benefit of using a high number of transmit antenna will be highlighted and a description of the proofs of concept implementation carried out in our labs provided.

The talk will then concentrate on the researches carried out with some of our PhD students on hybrid beamforming techniques, mmWave communications and VLC communications.

Bio

Professor Maryline Hélard received the M.Sc and PhD degrees from INSA Rennes and the Habilitation degree from Rennes 1 University in 1981, 1884 and 2004 respectively. In 1985, she joined France Telecom as a research engineer and since 1991 she has been studying physical layer in the field of digital television and wireless communications. In 2007, she joined the National Institute of Applied Science (INSA) as a professor and she is now the co-director of the Signal and 2018 Communications department of IETR (Electronics and Telecommunications Institute of Rennes). She is co-author of more than 140 technical papers including 37 journal papers and of 30 patents. Her current research interests are in the areas of digital communications such as MIMO techniques, large MIMO, OFDM, MC-CDMA, channel estimation, equalization, spatial modulations and iterative processing applied to wireless communications and more recently to wire communications (ADSL, optical). She was involved in several collaborative research projects including digital television, MC-CDMA techniques, time reversal and spatial modulation.