## Past Events at the University of British Columbia

### Past Events

- 12-Sep-07

A balls and boxes Markov chain

Consider N boxes, each with R balls in. Each step, pick two boxes uniformly at random. If the first box is not empty, move a ball from the first box to the second. The empirical distribution tends to the geometric law with mean R. We look at the t more››

Scientific Event

- 11-Sep-07

On Some Inverse Problems, Regularization, Level Sets, Conjugate Gradients and Sparse Solutions

In this informal talk I will attempt to draw some connections among the various items appearing in the title. Emphasis will be placed on the role of regularization and on efficient solution techniques for tough reconstruction problems. more››

Scientific Event

- 7-Sep-07

The fixed formula and Nori's approach to the Riemann-Roch theorem

We shall explain the content of the Lefschetz fixed point formula in the coherent setting and we shall explain its connection, established by M. Nori, with the Riemann-Roch theorem. Detailed computations in the case of curves will be given. more››

Scientific Event

- 22-Aug-07
- 31-Aug-07

Workshop on the Cycle Double Cover Conjecture

The Cycle Double Cover Conjecture (CDC) was proposed independently by P.D. Seymour (1979) and G. Szekeres (1973). The conjecture is easy to state: "For finite every 2-connected graph, there is a list of cycles (polygons) such that every more››

Scientific Event

- 20-Aug-07
- 22-Aug-07

The 19th Canadian Conference on Computational Geometry

The 19th Annual Canadian Conference on Computational Geometry (CCCG 2007) will be held in Ottawa, Canada on August 20-22, 2007 at Carleton University, with a welcome reception on the evening of August 19th more››

Scientific Event

- 20-Aug-07

Which way to go? Modeling eukaryotic chemotaxis

Chemotaxis is characterized by directed movement of cells up a chemical gradient. It is a key component in a multitude of biological processes, including neuronal patterning, wound healing, embryogenesis, and cancer metastasis. Even though many of more››

Scientific Event

- 13-Aug-07
- 17-Aug-07

International Conference of Theoretical and Numerical Fluid Mechanics III

The International Conference of Theoretical and Numerical Fluid Mechanics III is being held in honor of Professors Giovanni Paolo Galdi and Rolf Rannacher, in celebration of their sixtieth birthdays. Reflecting their interests, it will be an more››

Scientific Event

- 8-Aug-07

A fundamental problem of cell biology is to understand how cells make measurements and then make behavioral decisions in response to these measurements. The full answer to this question is not known but there are some underlying principles that ar more››

Scientific Event

- 7-Aug-07

- 7-Aug-07

Morphogen Gradients Stable During Growth? an example in plant development

In plant development, the phytohormone auxin plays a key-role, controlling cell identity, cell division and cell expansion. Interestingly, in both distal regions of plant roots and shoots, characteristic auxin maxima have been found which correlat more››

Scientific Event

- 6-Aug-07
- 19-Aug-07

Summer School on Particle Physics, Cosmology and Strings

The Summer School on Particle Physics, Cosmology and Strings is the 5th in an ongoing series offered by Perimeter Institute and PIMS. The summer school is targeted at 40 advanced graduate students in high energy physics with interests in at least one more››

Scientific Event

- 25-Jul-07

The talk will show how a lot of classical results about topological manifolds can be proved using a little bit of controlled topology. more››

Scientific Event

- 21-Jul-07
- 23-Jul-07

Mechanical Behaviour of Glassy Materials

http://pitp.physics.ubc.ca/confs/glass07/ more››

Scientific Event

- 18-Jul-07

Understanding the stability of lipid bilayers

Lipid bilayers demonstrate an intriguing combination of properties: at a microscopic scale they consist of individual molecules without covalent bonding, but at larger scales they show behaviour reminiscent of elastic solids. Energy-based models, more››

Scientific Event

- 25-Jun-07

- 25-Jun-07
- 29-Jun-07

Conference on Applied Inverse Problems 2007

The enormous increase in computing power and the development of powerful algorithms has made it possible to apply the techniques of Inverse Problems to real-world problems of growing complexity. Applications include a number of medical as well a more››

Scientific Event

- 18-Jun-07

- 18-Jun-07
- 20-Jun-07

Synchronous Rhythms in the Brain

The brain is the main source of biological rhythms. These rhythms range from sleep-wake cycles and the life-supporting respiration rhythm to hormonal rhythms that control reproduction and from gaits in animal locomotion to the highly sophisti more››

Scientific Event

- 15-Jun-07

The spread and evolution of highly pathogenic Avian Influenza (HPAI) H5N1 in Africa

rtant consequences for surveillance in Africa and beyond. As they scavenge on many dead species, they may also function as conspicuous sentinels in the African continent, similar to raptors or swans in Europe or cats in Indonesia. Proper disposal more››

Scientific Event

- 11-Jun-07