Numero
Veckobladet om forskning,
undervisning och
administration, m.m.
Nummer 41· 9 December 2004 · Årgång 34      
NADA

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Grid Computing and Beyond
December 16-17, 2004

A symposium and a gala dinner
in celebration of

Professor S. Lennart Johnsson’s 60th birthday

Tentative Speakers
* Malcolm Atkinson, Professor and Director of the National e-Science Centre

* Cees de Laat, Informatics Institute at the University of Amsterdam

* Ann Trefethen, Deputy Directory, UK e-Science Core Program

* Karl-Einar Sjödin, VINNOVA, Information and Communications Technology Department

Held by PDC and the Department of Numerical Analysis and Computing Science on the KTH campus Stockholm, Sweden

More information and registration form at:
http://www.pdc.kth.se/conference/lennart/


Luciafirande

Nadas traditionella luciafirande med sång och glögg äger rum i Nadas fikarum på plan 4
Måndagen den 13 december kl 15.00

Välkomna!

 

Delfis öppettider under Jul & Nyår

20/12-10/1 10.00-11.00
23/12 STÄNGT
5/1 STÄNGT

Vid allvarliga driftstörningar då Delfi är stängt kan systemgruppens journummer användas. Detta återfinns i Nadas telefon- och adresslista.

Studentexpeditionens öppetider
under jul och nyår

Studentexpeditionen har stängt mellan den 23 december och den 7 januari. Mellan 10-14/1 januari är det endast öppet mellan kl. 10.00-11.00.

Jonas/Delfi

 

Frescati Rösters jubileumskonsert

Stockholms universitetskör Frescati Röster firar i höst sitt 10-årsjubileum.
Detta firas med en konsert 17 december kl 17.30 i Sveaplans aula med körsång till accompagnemang av stråkar och orgel.

Entré 50 kr.

Kören, som består av studenter och anställda,
startade hösten 1994 av några entusiaster vid
biblioteket i samargbete med Kungliga musikhögskolan och med stöd av universitetsledningen.
konsertaffisch finns här:
http://www.pb.su.se/FR/affisch jubileumskonsert.gif

Välkomna
Olof L / 2:a bas

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Tema Nobel

We will have a series of lectures and Colloquia by Nobel winners and some distinguished guests.

December 9th, Albanova colloquium
in Klein Auditorium at 15.15

Life, The Universe, and Nothing: Life and Death in an
Ever-Expanding Universe.

Lawrence M. Krauss
Ambrose Swasey Professor of Physics, Professor of Astronomy, and Chair, Physics Department,
Case Western Reserve University

Abstract:
In this talk, I will ruminate on the future of the Universe itself, and also on the future of life within it, using as my starting point recent observations in cosmology.
I will first discuss why the Universe we appear to inhabit is the worst of all possible universes, as far as considerations of the quality and
quantity of life is concerned. Then, I will describe how fundamental aspects of the way in which we teach cosmology, in particular the relation between geometry and destiny, has been forever altered by recent discoveries.
Finally, I will address the fascinating question of whether life might be eternal in an eternally expanding universe.
The answer to this question appears to hinge on issues of basic physics, in particular on issues of quantum mechanics and computation, which may determine whether life is ultimately analogue or digital.

Coffee will be served before the talk

December 13th
Klein Auditorium
time 15.45

The Universe is a strange place
Frank Wilczek

Welcome

Håkan Snellman, Sven-Olof Holmgren
Claes Fransson, Jouko Mickelsson,
Hector Rubinstein

 

Master’s Thesis seminar
“Rung-Kutta-Chebychev Methods for Advection-
Diffusion-Reaction Problems”.

Limei Zhang. She is a student of the Master Programme in Scientific Computing.

Wednesday, December 15, 2004, at 10.00. Room: 4523.

Michael Hanke


Tema Nobel på Stockholms Akademiska Forum

Lördag den 11 december klockan 11.00-17.00

bjuder Stockholms Akademiska Forum och Nobelmuseet på öppet Vetenskapscafé:
Tema Nobel med intressanta samtal om Nobelpriset. Varje samtal pågår i 30 minuter och följs av 15 minuters tid för frågor och reflexion.
Fritt inträde på Stockholms Akademiska Forum, Kulturhuset, ingång från “Plattan” Sergels torg.

Program:
11.00 Finns kreativiteten inom dig eller utanför?
Med Solgerd Björn-Rasmussen, Nobelmuseet, och Hans Persson, lektor vid Lärarhögskolan i Stockholm

12.00 Varför fler frackar än klänningar?
Med Anders Bárány, Nobelmuseet, och Christina Florin, historiker vid Stockholms universitet

13.00 Hur behåller du din nyfikenhet?
Med Paul Sjöblom, Nobelmuseet, och Helene Carlbäck, historiker vid Södertörns högskola

14.00 Finns det Nobelpris som förändrat världen?
Med Åsa Husberg, Nobelmuseet, och Thomas Kaiserfeld, teknik- och vetenskapshistoriker vid KTH

15.00 Vad händer i hjärnan när vi lär oss
något?
Med Solgerd Björn-Rasmussen, Nobelmuseet, och Martin Ingvar, forskare inom neurovetenskap vid Karolinska Institutet

16.00 Vad betyder Nobelpriset för Sverige?
Med Anna Thompson, Nobelmuseet, och Rikard Forslid, nationalekonom vid Stockholms universitet

Mer information på
http://www.stockholmsakademiskaforum.se

 

The Automatic Control group at S3 seminar:

Latency of Wireless Sensor Networks with Uncoordinated Power Saving Mechanisms

Dr. Petteri Mannersalo
VTT Technical Research Centre of Finland

December 9th, 10:15
seminar room, 3rd floor, Osquldas väg 10

Abstract found at :
www.s3.kth.se/php/index.php?action=seminar&semid=137&id
=3&cmd=extended


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Presentation av exjobb i datalogi, biomedicinsk teknik och människa-datorinteraktion

Måndagen den 13 december 2004 kl 13.15 i rum 4523
OBS! Annan dag och tid än vanligt !!

Gudmundsson, Magnus
Increasing simulator performance using Machine Learning Systems.
Ämne: Datalogi. Program: F
Uppdragsgivare: SICS
Handledare: Daniel Gillblad och examinator: Anders Lansner
Opponenter: Johan Svahn, Björn Grundberg

Roitto, Christina
A new communication product.
Ämne: MDI. Program: Medieteknik
Uppdragsgivare: In View
Handledare: Bo Westerlund och examinator: Yngve Sundblad
Opponenter: Johanna Eriksson, Daniel Blom

 

Tisdagen den 14 december 2004 kl 15.15 i rum 4523

Rum 4523 har adress Lindstedtsvägen 5, plan 5

Grundberg, Björn
Multivariate Statistical Analysis of 2D Protein Crystal Unit Cells.
Ämne: Datalogi. Program: D
Uppdragsgivare: Karolinska Institutet
Handledare och examinator: Jan-Olof Eklundh
Opponent: Magnus Gudmundsson

Albinsson, Johanna
Mobiltelefonen som hjälpmedel i styrkortsarbete.
Ämne: Datalogi. Program: D
Uppdragsgivare: Append IT
Handledare: Henrik Eriksson och examinator: Yngve Sundblad
Opponenter: Anders Green, Malin Karlsson


 


Onsdagen den 15 december 2004 kl 15.15 i rum 4523

Pauchet, David
Extension of the test coverage of the automatic band switch feature in the low layers of mobile phones.
Ämne: Datalogi. Program: D
Uppdragsgivare: Motorola
Handledare: Karl Meinke och examinator: Stefan Arnborg
Opponent: Azadeh Shakoorian Fard

Vargensten, Niklas
Återhållsamt förbättrande av en simulator för IP-huvudkomprimering.
Ämne: Datalogi. Program: D
Uppdragsgivare: Effnet AB
Handledare: Serafim Dahl och examinator: Stefan Arnborg
Opponenter: Arno Lepisk, Mandus Engman

Bergendal, Albert
Utveckling av Internetbaserad mjukvara för aktuariella pensionsskuldsberäkningar.
Ämne: Datalogi. Program: Matematisk-datalogisk linje, SU
Uppdragsgivare: Hewitt/Löneanalyser
Handledare: Kjell Lindqvist och examinator: Stefan Arnborg
Opponent: Christian Smith, Jonas Leander

Presentationerna leds av Stefan Arnborg


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Seminars in Numerical Analysis:

Source linearization for inhomogeneous conservation laws

Smadar Karni, University of Michigan
(opponent at Malin Siklosi dissertation)

Onsdag 15 december, 14:15-15 i D4523

Abstract:
The presence of source terms in hyperbolic conservation laws allows for nontrivial steady-state solutions to exist already in one space dimension. They are characterized by a perfect balance between the flux gradient and source term, non of which is necessarily small. Traditional split-step time integration schemes are unable to respect that balance and often do not work satisfactorily near steady state limits.
We present a Roe-type upwind algorithm where steady-state considerations are used as guidance in source linearization. Results will be shown for the shallow water system and for the gas dynamics system with surface tension. Time permitting, application to multilayer shallow water systems, and to multiphase flow will be discussed.

A compiler for variational forms

Anders Logg, Toyota Technological Institute, Chicago

Torsdag 16 december, 14:15-15 i D4523

Abstract:
The finite element method provides a general framework for the solution of differential equations and can be viewed as a machine
that automates the discretization of differential equations. Given the variational formulation a(u,v) = L(v) of a differential equation A(u) = f, the finite element method generates a discrete system of equations for the approximate solution U.
This generality of the finite element method is seldom reflected in codes, which are often specialized and can handle only one equation
or a small set of differential equations.
Today, a number of tools exist that (partly) automate the implementation of finite element methods, but people still tend to write their own specialized codes, thinking this will give them better performance than with a general code in which the overhead of generality may be substantial.
This problem can be solved by using a compiler approach. The FEniCS Form Compiler FFC takes as input a variational formulation a(u,v) = L(v) and automatically generates code (C, C++, Fortran, ...) for the evaluation of the variational form (assembly). This approach allows for maximum generality (any form, any element) and the generated code can be as efficient as hand-written code.
FFC is a key component of FEniCS, a free software project for the Automation of Computational Mathematical Modeling. I will also give a general introduction to the FEniCS project and discuss how FFC relates to other components of FEniCS, in particular DOLFIN, FIAT, and FErari.

Welcome,


Axel Ruhe,
Professor of Numerical Analysis

Optimization and Systems Theory Seminar
DISTRIBUTED CONTROL OF SYSTEMS ON LATTICES

MIHAILO JOVANOVIC
Department of Electrical and Computer Engineering University of Minnesota

Thursday, December 9, 2004,
15.00-16.00,
Room 3721, Lindstedtsv. 25

In this talk, we investigate the properties of systems on lattices with spatially distributed sensors and actuators. These systems arise in a variety of applications ranging from the macroscopic (e.g., cross directional paper machine processes, automated highway systems, unmanned aerial vehicle formations, and satellite constellations), to the microscopic (e.g., arrays of micro-cantilevers for massively parallel data storage). The key design issues in the control of such systems are architectural, such as the choice of localized versus centralized control. In the first part of the talk, we describe how backstepping can be utilized as a tool for distributed control of nonlinear systems on lattices. We demonstrate that distributed backstepping design yields controllers that are intrinsically decentralized, with a strong similarity between plant and controller architectures, and quantify the number of control induced interactions necessary to guarantee desired dynamical behavior. In the second part of the talk, we investigate some fundamental limitations and tradeoffs in the control of vehicular platoons. We reveal ill-posedness inherent in several widely cited results in this area and show how to formulate well-posed control problems. By considering infinite platoons as limits of large-but-finite platoons, we establish analytically how these formulations lack stabilizability or detectability. Our results indicate that the infinite dimensional systems with dynamical symmetries represent a useful abstraction of the large scale systems that is more amenable to analysis.

Welcome!

Information on Optimization and Systems theory seminars can be found at:
http://www.math.kth.se/optsyst/seminar/


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Licentiat seminarium:

Customised information on Packaging – driving Forces and Logistical Aspects

Magnus Viström

10 December, kl 10.00
i sal D41 på Lindstedtsvägen 17.

Abstract
This thesis work is divided into two parts that relate to each other. The first part in-vest-igates driving forces and limiting factors in the customisation of information on packaging and the second part focuses on how the customisation task should be per-formed in order to obtain high productivity and efficient logistics. Opportunities with hybrid printing solutions where conventional technology is combined with digital print-ing are discussed.
The first of the included papers talks about the driving forces and limiting factors in the customisation of information on packaging and focuses on marketing aspects and con-sumer value. The second paper investigates the logistical aspects of using digital print-ing to add information on pre-printed packaging, with the primary focus on the oppor-tun-ities to reduce changeover time and printing form costs. The third paper investigates how digital printing can be integrated into a packaging line and identifies critical pro-duct-ivity related parameters. These three papers are analysed together in this report, giving input to conclusions about the driving forces and limiting factors in the cust-om-isation of information on packaging and how the customisation task should be per-form-ed to obtain high productivity and efficient logistics. Hence, this thesis work does not originate solely in one discipline. Digital printing technology, logistics and market-ing aspects are all considered to draw conclusions.

It is shown that it is possible to obtain marketing advantages, fulfill market demands bet-ter, get increased consumer value and reduced costs by using a hybrid printing sol-ut-ion. There exists at the same time a number of limiting factors, such as print quality demands, additional costs and reliability issues that are crucial to consider before con-cluding whether or not customisation of information on packaging would be successful in any given business scenario.
Different scenarios for where the customisation task can be inserted into a value chain are defined and discussed. Explicit studies of one of the scenarios are made. This scen-ario is defined as having a customisation task inline in a packaging line. The other scenarios, customisation at the packaging producer and customisation at the whole-saler/re-tailer, are not explicitly investigated, but it has been possible to discuss these scen-arios as well through the research results obtained. The results show that there are factors that point towards the scenario where digital printing is performed at the producer as being the most beneficial. A number of critical productivity related factors for this scenario are identified in paper III, which gives guidelines on how to obtain high productivity when a digital printing task is integrated into a packaging line. It is finally shown that it is possible to obtain high delivery service and efficient logistics by using a hybrid printing solution. It is, however, of crucial importance that possible draw-backs be considered in order to accurately conclude whether a hybrid printing sol-ution will be successful or not.

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Seminar in Mathematical PhysicsSpeaker:
Three-flavour effects in neutrino oscillations

Professor Evgeny Akhmedov, ICTP Trieste

Thursday 9 December 2004, 13:15
Seminar room in House 11 (room 112:028), Roslagstullsbacken 11, AlbaNova.

Program Fall 2004:
http://mathphys.physics.kth.se/sem.html

Welcome!


Tommy Ohlsson

 

Numero är institutionstidningen vid Nada - institutionen för numerisk analys och datalogi, KTH. Numero utkommer normalt på torsdags-förmiddagar under teminstid. Manus måste lämnas in före kl.12 på onsdagar.Manus, tips, förslag och andra bidrag till Numero kan lämnas på något av följande sätt:

Bidrag för artiklar och notiser bör i största möjliga mån vara färdigformulerade och korrekturlästa. Varje Numeronummer utkommer i två former:

Numeroredaktionen består av Maria Engström. Ansvarig utgivare är Ingrid Melinder. Numeros innehåll uttrycker inte institutionens officiella ståndpunkt annat än då detta anges.

 

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Kalendarium
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9 December

08.30 - 10.25

10:15

kl. 12.00 - 13.00,

13:15

15.00-16.00

15.15

Provföreläsning för professuren i datalogi, Hans Knutsson, Stefan Carlsson,
Ronen Basri, Marc Pollefeys

seminar:Latency of Wireless Sensor Networks with Uncoordinated Power Saving Mechanisms Dr. Petteri Mannersalo, seminar room, 3rd floor, Osquldas väg 10

Seminar: HUMAINE: towards a sound foundation for emotion-oriented
computing,
Prof Roddy Cowie, DSV, floor 7, Forum-building, Kista

Seminar in Mathematical Physics: Three-flavour effects in neutrino oscillations, Professor Evgeny Akhmedov, room 112:028 Roslagstullsbacken 11

DISTRIBUTED CONTROL OF SYSTEMS ON LATTICES, MIHAILO JOVANOVIC Room 3721, Lindstedtsv. 25

Albanova colloquium Life, The Universe, and Nothing: Life and Death in an Ever-Expanding Universe. Lawrence M. Krauss, place Klein Auditorium.

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10 December

kl 10.00

kl 14.15

Licentiat seminarium: Customised information on Packaging – driving Forces
and Logistical Aspects
, Magnus Viströms i sal D41 på Lindstedtsvägen 17.

D-kollegium i sal E2.

11 December,

11.00-17.00

Tema Nobel på Stockholms Akademiska Forum

13 December,

kl 15.00

15.45

Luciafirande i NADAs fikarum på plan 4

The Universe is a strange place Frank Wilczek, Klein Auditorium

14 December,

kl. 14:00

“Goal-directed search with a top-down modulated computational
attention system”
Simone Frintrop Room 304, Teknikringen 14

15 December,

kl. 14:15-15

Seminars in Numerical Analysis: Source linearization for inhomogeneous conservation laws Smadar Karni, i D4523

Master’s Thesis seminar: “Rung-Kutta-Chebychev Methods for Advection-Diffusion-Reaction Problems” Limei Zhang. Room: 4523.

16 December

14:15-15

A compiler for variational forms Anders Logg, i D4523


16-17 December



Grid Computing and Beyond A symposium and a gala dinner in celebration of
Professor S. Lennart Johnsson’s 60th birthday


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17 december

kl 14.00

kl 17.30

Doctoral thesis, Aspects of Viscous Shocks, Malin Siklosi, Kollegiesalen,
Administrationsbyggnaden, KTH

Frescati Rösters jubileumskonsert i Sveaplans aula


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21 januari 2005

kl 14.00

Doctoral Thesis, Video Based Analysis and Visualization of Human
Action
, MARTIN ERIKSSON, i Kollegiesalen


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"Love doesn't make the world go round.  Love just makes the ride worthwhile."

Franklin P. Adams

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