See all upcoming seminars in LäsIT and seminar web pages at the homepage for the PhD studentseminars, TDB, Vi2, Theory and Applications Seminars (TAS) @ UpMARC., Department of Mathematics and The Stockholm Logic Seminar.

Vi2 Seminar
Monday 18 Dec
Elisabeth Wetzer: Evaluating a Novel Approach for Fiber Analysis in Forensic Applications
Location: ITC 4307, Time: 14:15

Abstract: I will present the outcome of my master's thesis which I concluded at the Institute for Chemical Analysis and Technology at the Vienna Technical University. The study was an initial attempt to investigate the feasibility of automating fiber analysis in forensic science using Raman spectroscopy. The main focus was the practicability in crime investigation applications, rather than in optimized laboratory settings. To enable self-directed collection of spectral data a sequence of image processing steps is presented in the first part of this thesis. Its purpose is to allow for image segmentation and separation of fibers from the background to reduce the amount of measuring locations. Raman measurements have been conducted for various fibers of different fabrics and different dyes in an experimental setting which mimics real crime scenes, not conventional sample preparation in spectroscopy. The empirical part of this study was conducted in cooperation with the University of Natural Resources and Life Sciences, Vienna and the Criminal Investigation Service Austria. The results support the implementation of the algorithm presented to recognize fibers and search for fibers of a specific color to reduce the time consuming manual examination of a large set of evidence tapes. However the outcome of spectral examinations outlines several obstacles in using automated Raman spectroscopy, the majority of which are a direct result of thermal decomposition.

Vi2 Seminars Group
Anders Hast
Petter Ranefall


Guest Lecture
Monday 18 Dec
Douglas Hofstadter, Indiana University, Bloomington: Albert Einstein on Light - Light on Albert Einstein
Location: Siegbahnsalen, Ångströmlaboratoriet, Time: 15:15-17:00

Abstract: Where does deep insight in physics come from? For those who view physics as a highly rational science grounded in strict mathematics, it is tempting to think that it comes from the purest and most precise of reasoning, following ironclad laws of thought that compel the clear mind completely rigidly. And yet the truth is quite otherwise.

One finds, when one looks closely at any major discovery in physics, that the greatest of physicists are the most daring and are constantly being guided by blurry, instinctive, nearly irrational mental forces. Albert Einstein ideally exemplifies this thesis.

In this talk, I will discuss the eternal mystery of light, which, over the course of millennia, was puzzled over, pondered on, and slowly worked out by a series of great minds, and finally, in the nineteenth century, was definitively settled with clarity and rock-solid certainty. And yet one day in the early spring of 1905, quite out of the blue, came an absurd-seeming new suggestion from an unknown Swiss patent clerk, third class, clashing violently with that rock-solid piece of collective wisdom. How did the brazen patent clerk come up with this crazy idea? How it was received by the physics world? What was its eventual fate? And what can we learn about the workings of the human mind from this twisty story filled to the brim with ironies?

Biography: Douglas Hofstadter is College of Arts and Sciences Professor of Cognitive Science, and Director of the Center for Research on Concepts and Cognition, at Indiana University in the US. A legendary pioneer in the field of artificial intelligence (AI), Hofstadter is best known for his debut work, Gödel, Escher, Bach: an Eternal Golden Braid (GEB for short), published in 1979 and awarded the prestigious Pulitzer Prize in 1980.

This lecture is co-organized by the Department of Information Technology and Department of Physics and Astronomy. If you have any questions, please contact Ulf Danielsson at the Department of Physics and Astronomy.

Licentiatseminarium / Licentiate seminar
17 January
Kim-Anh Tran: Static Instruction Scheduling for High Performance on Energy-Efficient Processors
Location: ITC 1245, Time: 13:15

Advisors: Alexandra Jimborean and Stefanos Kaxiras
Opponent: Ayal Zaks, Intel, Haifa (Israel)

Language: English

Abstract: New trends such as the internet-of-things and smart homes push the demands for energy-efficiency. Choosing energy-efficient hardware, however, often comes as a trade-off to high-performance. In order to strike a good balance between the two, we propose software solutions to tackle the performance bottlenecks of small and energy-efficient processors.

One of the main performance bottlenecks of processors is the discrepancy between processor and memory speed, known as the memory wall. While the processor executes instructions at a high pace, the memory is too slow to provide data in a timely manner, if data has not been cached in advance. Load instructions that require an access to memory are thereby referred to as long-latency or delinquent loads. Long latencies caused by delinquent loads are putting a strain on small processors, which have few or no resources to effectively hide the latencies. As a result, the processor may stall.

In this thesis we propose compile-time transformation techniques to mitigate the penalties of delinquent loads on small out-of-order processors, with the ultimate goal to avoid processor stalls as much as possible. Our code transformation is applicable for general-purpose code, including unknown memory dependencies, complex control flow and pointers. We further propose a software-hardware co-design that combines the code transformation technique with lightweight hardware support to hide latencies on a stall-on-use in-order processor.

VI2 External Seminar Series
19 January
Marta Kristín Lárusdóttir / Torkil Clemmensen: Integrating UCD in Agile Projects in Industry / The Socio-Technical Future of HCI
Location: Ångström: Faculty Room , Time: 10:00

Associate Professor Marta Kristín Lárusdóttir, Reykjavik University: Integrating UCD in Agile Projects in Industry: Research Results and Future Work

Marta will give a talk on the interplay between usability activities and agile software development processes used in the IT industry. Marta has conducted research on this topic for many years collaborating with international researchers and students. Marta will give a summary of the results of these studies and describe future work on this important topic.

Marta Larusdottir is an Associate Professor at Reykjavik University with a PhD in Human-computer interaction. Marta has extensive leading knowledge in the area of evaluation and user feedback in software development. Particularly, she is a well known researcher in agile software development and how the user perspective is integrated in agile processes and has written several papers and arranged workshops on that subject.

This presentation will be followed directly by the presentation by prof. Torkil Clemmensen.

Professor Torkil Clemmensen, Copenhagen Business School: The Socio-Technical Future of HCI

Human-Computer Interaction (HCI) builds on the ideology of empowering the end-users of computers, so that they understand what is happening and can control the outcome (Nielsen, 2005). How does that work for HCI in organizations and societies? While HCI historically has been based on applying cognitive psychology to understand the individual user (Card, Moran, & Newell, 1983), one strong trend in modern and contemporary HCI is to study applications in business, managerial, organizational, and cultural contexts. To design HCI for organizations, the big thing may be to do some kind of HCI design action research that constructs or modifies one or more HCI artefacts within their existing organizational contexts: sketches, prototypes, templates, running systems – anything that changes the interactions that managers and employees do and experience. Hence, the future topics and theory of HCI may indeed be socio-technical.

Torkil Clemmensen is a professor at the Department of Digitalization, Copenhagen Business School, Denmark. His research interest is in psychology as a science of design with a focus on cultural psychological perspectives on usability, user experience, and digitalization of work. He contributes to Human-Computer Interaction, Design, and Information Systems.

Disputation / Dissertation
19 January
Victor Shcherbakov: Localised Radial Basis Function Methods for Partial Differential Equations
Location: ITC 2446, Time: 10:15

Victor Shcherbakov will will present and defend his PhD thesis. The opponent will be Professor Grady B. Wright, Boise State University, Department of Mathematics. Docent Elisabeth Larsson has been Victor's supervisor.

DiVA includes abstract and full text.

See also the list of all upcoming seminars.

Internal seminars. Lecturers may be either internal or external.