IFT POSTEN - DATO

IFT POSTEN – 20.02.2009

Fra Instituttledelsen

Et nytt nummer og en rykende fersk nyhet: IFT posten har endelig fått tak i ny oversetter, Dette nummeret blir gjort tilgjengelig neste mandag på engelsk og fra da av kommer forhåpentlig engelsk versjon samtidig med den norske.

Vi gratulerer også Dieter Röhrich og Renate Grüner med publikasjoner!

Nyheter og generell informasjon

Felleseminar – terminliste Vår 2009

Der er plass til flere foredrag – så har du et forslag på en gjest som kommer så ta kontakt med Lars Egil Hellseth/Kjell Brønstad.

Day	Date	Name	Institution	Subject (Title set by author)	Status
Friday	Feb. 06	Ponniah Ravindran	UiO	Modelling of Multifunctional oxides and hydrogen storage materials	Confirmed
Friday	March 06	Asgeir Sorteberg	UiB, Institute of Geophysics	Smelting i Arktis - Fortid, nåtid og framtid	Confirmed
Friday	March 20	Lars Egil Helseth	UiB, IFT	Magnetic particles as building blocks and nanoprobes	Confirmed
Friday	April 24	Inga Berre	UiB Mat	Ren energi fra jordens indre - fra varme kilder til konstruerte geotermiske system	Confirmed
Friday	May 08	Olav Gaute Hellesø	Institute of Physics, University of Tromsø	Moving micro- and nanoparticles with light	Confirmed

Invitasjon til møte med OG21

- Exploration and reservoir characterisation her i Bergen den 4.mars. Se nærmere informasjon og påmelding:

http://www.og21.org/TTA2+Innovation+seminar.9UFRDG3i.ips

Mer info om programmet på http://www.snf.no/EnergiforumEF/

Instituttmesterskap i langrenn & aking:

På ett døgns varsel startet hele 8 skientusiaster opp i historiens første instituttmesterskap på ski. De ble applaudert av enda flere kolleger i det de tok seg gjennom den krevende løypen.

Under noen bilder og resultater fra den flotte vinterdagen i parken.

Resultater

1. Trygve Buanes, Subatomær 2.31

2. Endre Sommersten, Optisk 3.19

3. Nikolai Østgård, Romfysikk 3.50

4. Roald Langøen, Verkstedet 4.07

5. Ladislav Kocbach, Optisk 4.20

6. Stian Sørngård, Optisk 5.53

7. Bjørn Arntzen, Prosessteknologi 6.09

8. Erik Romfysikk 8.01

Her ble fremvist stor skiglede og innsats blant alle startende. Veltrente Trygve Buanes tok ikke overaskende en klar seier. Idealtiden ble beregnet til 4.12 og prisen gikk dermed til den nærmeste, nemlig verkstedets representant.

Arrangørene håper at med dette er en årlig tradisjon startet som snart samler flere deltakere enn julebordet!

Advanced Library course - new opportunity Friday 27 February

The Science Library offer an advanced library course (3 hours) for the experienced library user at Friday 27 February, 12:15-15:00.

The course will be held in English.

There is no need to sign up for the course. Just show up at the Science Library (Johannes Brunsgt. 12) at Friday 27 February 12:15.

(If there are few participants, the course may take less than 3 hours).

If you have any questions, please contact Marianne.Jensen@mnfa.uib.no

Utdanning

Disputaser som har vært

Kalibreringsrammeverk for online analyse av ALICE-eksperimentet ved CERN

Sebastian Robert Bablok disputerte 13. februar for PhD-graden ved Universitetet i Bergen. Avhandlingen var:

“Heterogeneous Distributed Calibration Framework for the High Level Trigger in ALICE”

Link til pressemeldingene hans:

http://www.uib.no/info/dr_grad/2009/Bablok_SebastianR.html

Alle er velkommen til å høre på!

Institutt for fysikk og teknologi gratulerer vår nye doctor!

Seminar over selvvalgt emne

Tirsdag 24.02.2009 kl.1015 i Rom 366, IFT

PhD–student Kristian Snekvik avholder seminar over selvvalgt emne:
"Hannes Alfvén og hans bidrag til romfysikken"

Alle er velkommen til å høre på!

Summer Institute for Norwegian Undergrad Students in the Sciences

The Summer Institute for Norwegian Students in the Sciences will offer twelve (12) scholarships to undergraduates majoring in the natural sciences. The students will be offered a six-week institute focusing on the scientific work being undertaken in the polar regions in conjunction with the International Polar Year. All Institute activities will be conducted in English.

Participants will travel to the United States in early July 2009 (the program starts July 5, 2009) and stay for six weeks (42 days). The program will be hosted by a U.S. university, which will be announced in March 2009. All participants will attend a debriefing and evaluation session in Washington, D.C., at the conclusion of the Institute before returning to Norway.

Eligibility Requirements

Individuals interested in participating in the Summer Institute for Norwegian Students in the Sciences must meet the following eligibility requirements. Applicants must:

· have completed at least two years of undergraduate study in the natural sciences (fields of study include biology, chemistry, earth sciences, and physics)

· be highly proficient or fluent in English;

· have a demonstrated interest in the polar regions, including the circumpolar region and the High North;

· be able to participate in the program in its entirety;

· be committed to returning to their home university in the fall of 2009;

· have a sustained high level of academic achievement, as indicated by academic grades, awards, and teacher recommendations;

· and be willing and able to participate fully in the Institute academic program, including attending all sessions, completing all assignments, and contributing to classroom discussions.

Financial Provisions

Awards will cover all participant costs. Participants will be provided with the following:

· round-trip airfare from home city to the host university in the United States, including a stop in Washington, D.C., at the conclusion of the program to participate in a debriefing session;

· visa sponsorship;

· tuition and fees at the host university;

· lodging and meals on the host university campus;

· a small daily allowance for incidental expenses;

· health and accident coverage in accord with United States Government guidelines; and

· a book and educational materials allowance.

Application Information

The application deadline is March 15, 2009. For more information please see www.fulbright.no

Questions about the program should be directed to:

Sara Ullerø, Program Officer/ Student Adviser

sara@fulbright.no Tel: +47 22 01 40 11

Publikasjoner (ISI)

Multispectral analysis of multimodal images
Author(s): Kvinnsland Y, Brekke N, Taxt T, R. Grüner et al.
Source: ACTA ONCOLOGICA Volume: 48 Issue: 2 Pages: 277-284 Published: 2009

Abstract: Introduction. An increasing number of multimodal images represent a valuable increase in available image information, but at the same time it complicates the extraction of diagnostic information across the images. Multispectral analysis (MSA) has the potential to simplify this problem substantially as unlimited number of images can be combined, and tissue properties across the images can be extracted automatically. Materials and methods. We have developed a software solution for MSA containing two algorithms for unsupervised classification, an EM-algorithm finding multinormal class descriptions and the k-means clustering algorithm, and two for supervised classification, a Bayesian classifier using multinormal class descriptions and a kNN-algorithm. The software has an efficient user interface for the creation and manipulation of class descriptions, and it has proper tools for displaying the results. Results. The software has been tested on different sets of images. One application is to segment cross-sectional images of brain tissue (T1- and T2-weighted MR images) into its main normal tissues and brain tumors. Another interesting set of images are the perfusion maps and diffusion maps, derived images from raw MR images. The software returns segmentations that seem to be sensible. Discussion. The MSA software appears to be a valuable tool for image analysis with multimodal images at hand. It readily gives a segmentation of image volumes that visually seems to be sensible. However, to really learn how to use MSA, it will be necessary to gain more insight into what tissues the different segments contain, and the upcoming work will therefore be focused on examining the tissues through for example histological sections.

Time of Flight resolution of the prototype of the electromagnetic calorimeter PHOS
Author(s): Röhric D. et al.

Source: PHYSICAL REVIEW D Volume: 79 Issue: 1 Article Number: 012002 Published: JAN 2009

Abstract: The Time of Flight (TOF) resolution of one of the LHC ALICE detectors, a prototype of the electromagnetic calorimeter PHOS (PHOton Spectrometer), was measured in beam tests carried out at CERN PS. The prototype of the calorimeter consists of 256 (22 x 22 x 180 mm(3)) cells of light-detecting PbWO4 (PWO) monocrystals read out with 5 x 5 mm(2) Avalanche Photo Diodes (APDs). Three dedicated front end cards with 24 channels of electronics were designed and produced for using in the tests, each channel consisting of one fast and two slow shapers, a time to amplitude converter and three identical 12-bit peak sensitive Analog to Digital Converters (ADCs). The high voltage bias regulator for APD is located on the same card. The measured TOF resolution is described as sigma(t) = 0.24/E-GeV(2) + 0.4 ns. (c) 2008 Elsevier B.V. All rights reserved.

Babar:

Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma
Author(s): Aubert B, Bona M, Karyotakis Y, et al.
Source: PHYSICAL REVIEW D Volume: 79 Issue: 1 Article Number: 011102 Published: JAN 2009

Measurements of the semileptonic decays (B)over-bar -> Dl(nu)over-bar and (B)over-bar -> D*l(nu)over-bar using a global fit to DXl(nu)over-bar final states
Author(s): Aubert B, Bona M, Karyotakis Y, et al.
Source: PHYSICAL REVIEW D Volume: 79 Issue: 1 Article Number: 012002 Published: JAN 2009

Search for Lepton Flavor Violating Decays tau(-) -> l(-)K(s)(0) with the BABAR Experiment
Author(s): Aubert B, Bona M, Karyotakis Y, et al.
Source: PHYSICAL REVIEW D Volume: 79 Issue: 1 Article Number: 012004 Published: JAN 2009

Measurement of the Branching Fractions of (B)over-bar -> D**l(-)(v)over-bar(l) Decays in Events Tagged by a Fully Reconstructed B Meson
Author(s): Aubert B, Bona M, Karyotakis Y, et al.
Source: PHYSICAL REVIEW LETTERS Volume: 101 Issue: 26 Article Number: 261802 Published: DEC 31 2008