# HGS MathComp Events

 WS 12/13 SS 13 WS 13/14 SS 14 WS 14/15 SS 15 WS 15/16 SS 16 WS 16/17 SS 17
Workshops
info  Poster Design Dr. Sita Schanne Sept 16, and Sept 23, 2015 ECTS-Points: 2
IWR, Room 532
Time:
9:00
ECTS-Points:
2
info  Presenting Research Results Dr. Sita Schanne July 13 - 14, 2015, 9:00-17:00 ECTS-Points: 2
Abstract, registration & information:
An important part in research is presenting your results. This course will help you to prepare for the presentation of your research in seminars, at conferences or in your disputation. In the course we will work on the following topics:
-How do I structure my talk to make it more effective?
-How do I use media efficiently?
-What do I have to bear in mind to address my audience most effectively?
-How can I improve my performance through feedback?
The course requires participants to be actively involved by giving a presentation. Therefore you are expected to prepare a short presentation/poster on your research topic beforehand / after the first day of the workshop.
Systematic feedback (from the group, the expert, and video) will help you to recognize your strengths and weaknesses, to try out new presentation strategies and thus to improve your presentation skills.
Please note: This is not a language course.
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Location:
Abteilung Schlüsselkompetenzen und Hochschuldidaktik Bergheimer Straße 20, Heidelberg, Seminarraum 314
Time:
9:00
ECTS-Points:
2
info  Good Scientific Practice Dr. Sita Schanne June 18, 2015 9:00-17:00 ECTS-Points: 1
Abstract, registration & information:
Serious cases of scientific misconduct have been reported in the media recently. But beside the most prominent cases several shades of questionable scientific practice might undermine the integrity of the sciences. Based on the recommendations for “Safe Guarding Good Scientific Practice” by the Deutsche Forschungsgemeinschaft this course wants to support doctoral students to develop a responsible professional conduct as a researcher.
In this one-day workshop you will gain a general understanding of good scientific practice and scientific misconduct (e.g. plagiarism, fabrication, falsification). We will explore key areas of conflict, critical situations and possible causes of misconduct. Questions regarding data management, documentation and ownership will be addressed, as well as the correct use of references and problem areas in the publication process. Furthermore we will reflect on aspects of a functioning supervisor- student- relationship as a factor to prevent scientific misconduct.

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Location:
IWR, Room 520
Time:
9:00
ECTS-Points:
1
info  Cryptoparty NoName e.V. 27.05., 17.06., 29.06. 2015; jeweils 18:30 ECTS-Points: 0
Abstract, registration & information:
Im letzten Jahr haben wir Sicherheit erhalten, dass mehrere staatliche Institutionen verschiedener Länder den kompletten Internetverkehr überwachen und analysieren. Es drängt sich die Frage auf, wie man seine Daten vor unerlaubtem Zugriff schützen und seine Privatsphäre bewahren kann. Deswegen veranstalten wir sogenannte Cryptopartys, auf denen wir technische Hilfsmittel erklären, mit denen man seine Kommunikation verschlüsseln kann – ohne, dass man ein Computerexperte sein muss.

Die Veranstaltungen sind kostenlos und stehen jedem offen, um Anmeldung wird gebeten (siehe unten).

Was ist eine Cryptoparty?
Auf einer Cryptoparty zeigen wir, dass man kein Computerfreak sein muss, um seine E-Mails zu verschlüsseln. Wir zeigen, wie man etablierte Verchlüsselungs- oder Anonymisierungssoftware installiert und benutzt. Ist diese Software einmal eingerichtet, fällt sie im Alltag kaum noch auf, aber kann Kommunikation effektiv schützen. Teilnehmer können gerne einen eigenen Laptop mitbringen, dann unterstützen wir bei der Installation und Einrichtung.

Anmeldung
Damit wir vorbereiten und planen können, bitten wir um eine kurze und formlose Anmeldung an crypto@noname-ev.de mit der Anzahl der Personen, welcher Termin und, wenn Laptops mitgebracht werden, des verwendeten Betriebssystems. Danke!

Wer seid ihr?
Der NoName ist ein Heidelberger Treff zu computer- und techniknahen Themen aus dem erweiteren Umfeld des Chaos Computer Club. Wir treffen uns jeweils am ersten Donnerstagabend im Monat zu einem Stammtisch in wechselnden Lokalen und an allen anderen Donnerstagen in einem Raum an der Universität.
Bei der Durchführung unterstützen uns dieses Jahr freundlicherweise die HGS MathComp und die AG Netzpolitik der Universität Heidelberg. Vielen Dank!
Abstract (PDF)
Location:
Im Neuenheimer Feld 368, Raum 432
Time:
18:30
ECTS-Points:
0
info  Laufworkshop Gabriele Braun March 31, 2015, 09:00-16:30 ECTS-Points: 1
INF 368, 69120 Heidelberg & Institut für Sport und Sportwissenschaft
Time:
9:00
ECTS-Points:
1
Events
info  Embedded Boundary Methods for flow in complex geometries Sandra May, PhD July 31, 2015, 14:15 ECTS-Points: not yet determined
Abstract, registration & information:
Cut cells methods have been developed in recent years for
computing flow around bodies with complicated geometries. They are an
alternative to body fitted or unstructured grids, which may be harder to
generate and more complex in the bulk of the flowfield. Cut cell methods
\"cut\" the flow body out of a regular Cartesian grid. Most of the grid is
regular. Special methods must be developed for the \"cut cells\", which are
cells that intersect the boundary. Cut cells can have irregular shape and
may be very small. We present a mixed explicit implicit time stepping
scheme for solving the advection equation on a cut cell mesh. The scheme
represents a new approach for overcoming the small cell problem: namely,
that explicit time stepping schemes are not stable on the arbitrarily
small cut cells. Instead, we use an implicit scheme near the embedded
boundary, and couple it to a standard explicit scheme used over most of
the mesh. We compare several ways of coupling the explicit and implicit
scheme, and prove a stability (TVD) result for one of them, which we call
“flux bounding”. We present numerical results in one, two, and three
dimensions. These results show second-order accuracy in the $L^1$ norm and
between first- and second-order accuracy in the $L^{\\infty}$ norm. (Joint
work with Marsha Berger.)
Location:
SR 215, INF 293 (URZ)
Time:
14:15
ECTS-Points:
not yet determined
info  Data Vortex General Purpose Fine-Grained Parallel Computers: Designed by a Mathematician for the Scientific Community to Solve the Hardest Problems Dr. Coke S. Reed July 16, 2015, 15:00 ECTS-Points: 0
Abstract, registration & information:
Excerpt from Abstract:

"The Data Vortex network enables scientists to perform work on problems that rely on a tremendous flood of processor-to-processor communication, something that present-day computers handle quite poorly. For example, the Data Vortex is used to perform the FFT algorithm. In 1805, Karl Friedrich Gauss used the Fast Fourier Transform to determine the trajectories of the comets Pallas and Juno. It is of note that the original manuscript of Fourier on the subject of Fourier analyses appeared in 1807. The Gauss work describes the data flow of the transform. It is of interest that the Data Vortex computer enables this FFT data flow on a general purpose computer for the first time. This topic of FFT data flow as well as the general topic of data flow algorithms on Data Vortex computers will also be discussed.

Dr. Reed’s talk will be followed by a brief overview of the Data Vortex family of high performance computers currently being manufactured by Plexus, Inc. This overview, given by Mr. Bill Stube, Data Vortex Project Manager for Plexus, Inc., will include a high-level description of the Data Vortex enabled system characteristics, performance comparisons to present-day leading supercomputer systems, and an overview of the simple programming model used by Data Vortex researchers to port their work onto Data Vortex computers."

Full Abstract
Biographie Dr. Coke Stevenson Reed
Website Data Vortex Technologies
Location:
INF 368, room 248
Time:
15:00
ECTS-Points:
0
info  From Flapping Birds to Space Telescopes: The Art and Science of Origami Prof. Robert Lang July 8, 2015, 18:30 ECTS-Points: 0
Abstract, registration & information:
HGS MathComp Public Lecture

The last decade of this past century has been witness to a revolution in the development and application of mathematical techniques to origami, the centuries-old Japanese art of paper-folding. The techniques used in mathematical origami design range from the abstruse to the highly approachable. In this talk, I will describe how geometric concepts led to the solution of a broad class of origami folding problems – specifically, the problem of efficiently folding a shape with an arbitrary number and arrangement of flaps, and along the way, enabled origami designs of mind-blowing complexity and realism, some of which you’ll see, too. As often happens in mathematics, theory originally developed for its own sake has led to some surprising practical applications. The algorithms and theorems of origami design have shed light on long-standing mathematical questions and have solved practical engineering problems. I will discuss examples of how origami has enabled safer airbags, Brobdingnagian space telescopes, and more.

Robert J. Lang is recognized as one of the foremost origami artists in the world as well as a pioneer in computational origami and the development of formal design algorithms for folding. With a Ph.D. in Applied Physics from Caltech, he has, during the course of work at NASA/Jet Propulsion Laboratory, Spectra Diode Laboratories, and JDS Uniphase, authored or co-authored over 100 papers and 50 patents in lasers and optoelectronics as well as authoring, co-authoring, or editing 14 books and a CD-ROM on origami. He is a full-time artist and consultant on origami and its applications to engineering problems but keeps his toes in the world of lasers, most recently as the Editor-in-Chief of the IEEE Journal of Quantum Electronics from 2007-2010. He received Caltech’s highest honor, the Distinguished Alumni Award, in 2009 and was elected a Fellow of the American Mathematical Society in 2013.
Abstract (PDF)
Location:
Theoretikum, INF 306, Hörsaal 1, 69120 Heidelberg
Time:
18:30
ECTS-Points:
0
info  Computational Origami: New Algorithms for Folding Design Prof. Robert Lang July 8, 2015, 16:15 ECTS-Points: 0
Abstract, registration & information:
IWR-Colloquium Summer Term 2015

The field of computational origami is focused on the development of algorithms for origami design: construct a fold pattern that meets specific objects for the 2D unfolded form, the 3D folded form, and in some case, the phase­space path for transitioning between the two. In this talk I will present several recent developments in origami design algorithms and will show examples of their construction, some rendered in pixels, some rendered in paper.

Robert J. Lang is recognized as one of the foremost origami artists in the world as well as a pioneer in computational origami and the development of formal design algorithms for folding. With a Ph.D. in Applied Physics from Caltech, he has, during the course of work at NASA/Jet Propulsion Laboratory, Spectra Diode Laboratories, and JDS Uniphase, authored or co­authored over 100 papers and 50 patents in lasers and optoelectronics as well as authoring, co­authoring, or editing 14 books and a CD­ROM on origami. He is a full­time artist and consultant on origami and its applications to engineering problems but keeps his toes in the world of lasers, most recently as the Editor­in­Chief of the IEEE Journal of Quantum Electronics from 2007-2010. He received Caltech’s highest honor, the Distinguished Alumni Award, in 2009 and was elected a Fellow of the American Mathematical Society in 2013.
Abstract (PDF)
Location:
IWR, INF 368, room 432
Time:
16:15
ECTS-Points:
0
info  IWR & HGS MathComp Summer Party 2015 July 1, 2015, 18:30 ECTS-Points: 0
Abstract, registration & information:
We kindly invite all members, students and staff of the IWR and the HGS MathComp to join us at our 2015 summer party.

As usual, in accordance with university guidelines, we have to charge 10,- EUR per person to cover expenses - children attend free of charge.

Please make sure to register online for the event.

Online Registration
Location:
Kirchhoff-Institute for Physics (KIP), INF 227, 69120 Heidelberg
Time:
18:30
ECTS-Points:
0
info  Darcy Lecture: Numerical Models for Evaluating the Competitive Use of the Subsurface Prof. Rainer Helmig July 1, 2015, 14:15 ECTS-Points: not yet determined
Abstract (PDF)
Location:
IWR, INF 368, room 432
Time:
14:15
ECTS-Points:
not yet determined
info  Trust-region adaptive stochastic collocation for PDE optimization under uncertainty Prof. Matthias Heinkenschloss June 15, 2015, 14:15h ECTS-Points: not yet determined
Abstract, registration & information:
I will present a trust-region algorithm with adaptive sparse grids for the solution of optimization problems governed by partial differential equations (PDEs) with uncertain coefficients. The algorithm adaptively builds two separate sparse grids: one to generate optimization models for the optimization step computation, and one to approximate the objective function to evaluate whether to accept the step. The quality of the adaptive sparse grid models is determined by the trust-region algorithm. Conditions on inexact function and gradient evaluations in previous trust-region frameworks are extended to allow the rigorous use of asymptotic (discretization) error estimates for objective function and gradient approximations.

The algorithm often generates adaptive sparse grids that contain significantly fewer points than the high-fidelity grids, which leads to a dramatic reduction in the computational cost. Moreover, the numerical results indicate that the new algorithm rapidly identifies the stochastic variables that are relevant to obtaining an accurate optimal solution. When the number of such variables is independent of the dimension of the stochastic space, the algorithm exhibits near dimension-independent behavior.
Location:
IWR, INF 368, Room 432
Time:
14:15
ECTS-Points:
not yet determined
info  Thermische Energiesysteme in der Industrie - Technologieentwicklung, Aspekte der Integration und Betriebsführung Dr. Tilman Barz May 28, 2015, 17:15 ECTS-Points: not yet determined
Abstract, registration & information:
Eine nachhaltige und effiziente Energieversorgung ist ein zentraler Standortfaktor für die österreichische und europäische Wirtschaft. Daher wird die Energieeffizienz in der Industrie als zentrales strategisches Thema am AIT Austrian Institute of Technology etabliert. Im Vordergrund stehen hier Technologien zur Erhöhung der Energieeffizienz durch Wärmerückgewinnung, Abwärmenutzung und den Einsatz thermischer Energiespeicher sowie die Optimierung von Betriebsstrategien mit Hilfe dynamischer Prozessmodelle und Simulation. Der Vortrag gibt einen Überblick über die aktuellen F&E Aktivitäten im Bereich Energieeffizienz in der Industrie.
Location:
IWR, Im Neuenheimer Feld 368, 69120 Heidelberg, Room 432
Time:
17:15
ECTS-Points:
not yet determined
info  Tensor networks and hierarchical tensors for many particle Schrödinger equation and high-dimensional PDEs Prof. Reinhold Schneider May 13, 2015, 16:15 ECTS-Points: not yet determined
Abstract (PDF)