Slides from the “Science for business and society” conference

Slides from the closure conference were made available at mokslasplius.lt portal's science news website. Though note that slides are only available in Lithuanian (see here). We would like to remind you that Physics of Risk was represented by V. Gontis and V. Daniūnas, thus their slides might be the most useful for visitors of Physics of Risk website.

Multifractality of time series

One of the conclusions of fractal geometry is a fact that fractals unlike traditional Euclidean shapes lack characteristic scale. Those "fractured" objects are self-similar - defining geometry is clearly visible on multitude of scales. It is known that self-similarity is observed not only in formally defined geometric objects, such as Sierpinski triangle or Koch snowflake, but also in the surrounding nature. One of my most favorite examples is a comparison of tree, its branches and a leaf (for more inspiring examples see introduction of Fractals section) - they all have branching structure and something green filling the extra space in between.

The interesting thing, in context of the topic in focus, is that one can extend fractal formalism beyond formal or natural geometric shapes. It is also noticed that some of the natural processes exhibit fractal features in their time series! It is known that geoelectrical processes [1], heartbeat [2] and even human gait [3] time series posses this feature. While financial market, frequently analyzed on Physics of Risk website, time series are also no exception [4, 5]. Though the aforementioned time series are much more complex - they exhibit not monofractality (single manner self-similar behavior as the aforementioned formal geometric fractals do), but multifractality!

Conference "Science for business and society"

On the 25th of October, 2011 conference dedicated to the project Science for business and society will be held at hall in the Vilnius University, Institute of Theoretical Physics and Astronomy (A. Goštauto g. 12 - 432, Vilnius). This conference will mark ending of the currently ongoing project behind the Physics of Risk website. Main focus of this conference will be presentation of achieved results and discussion between business and scientists.

Presentations at 39th Lithuanian national physics conference

We have contributed two presentations towards the recent 39th Lithuanian National Physics Conference, which was organized by Vilnius University and Lithuanian Physicist Society. Oral presentation by A. Kononovicius was based on some of the models presented on Physics of Risk website, while poster presentation by R. Kazakevičius tackles very general problem related to the Physics of Risk.

Three group Kirman's agent-based model for financial markets

As we have seen previously application of the original Kirman's model enables reproduction of single power law spectral density [1]. While actual financial markets and sophisticated stochastic models [2] have double power law spectral density - i.e., fractured spectral density. Thus it would be nice to obtain fracture of spectral density by improving application of Kirman's agent based model towards financial markets.