Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Scrisoare deschisa In aceste vremuri de criza sanitara trebuie sa folosim toate armele la dispozitie pentru a lupta cu virusul SARS-COV2. Masurile de distantare sociala luate pana acum de guvern si cele care vor urma, o sa ajute sa se reduca transmisibilitatea virusului. Pe langa aceste masuri, este urgent sa incepem testarea agresiva a populatiei pentru identificarea si izolarea rapida a cat mai multi dintre oamenii infectati cu virus. TehnologiaRead more
We investigate the representation of game-theoretic measures of network centrality using a framework that blends a social network representation with the formalism of cooperative skill games. We discuss the expressiveness of the new framework and highlight some of its advantages, including a fixed-parameter tractability result for computing centrality measures under such representations. As an application we introduce new network centrality measuresRead more
In particular situations, clinical trials researchers could have a potential interest in assessing trends at the level of individual subjects. This paper establishes a common approach and applies it in two different situations, one from nutritional medicine and one from cardiovascular medicine. The approach consists of running as many regression models as the number of subjects, looking at the behavior of some parameter of interest in time. The regressionRead more
Considered by the ecologists a complex of ecosystem and by the geographers a territorial system, the landscape represents the result of long-term interaction between man and nature, translated into a certain specific structural and functional organization and into the way it is perceived by human communities. The interaction between man and landscape is reflected in land cover and use changes, which represent an instrument to assess trends of interestRead more
Countries in transition to a market economy exhibit increased regional disparities, leading to differences in the standard of life and in the chances of the population to benefit from the radical socio-economic and political changes. Our aim in this article is to find an index other than the gross domestic product, and maybe a synthetic one, capable of measuring territorial imbalances. In search of such an index, we considered 17 indicators to beRead more
Oldest known macrofossils on Earth, marine stromatolites are known to result from microbially mediated processes, and are still forming in remote environments. The microbial mats of stromatolites are fueled by cyanobacterial autotrophy. Several studies documented that cyanobacteria are able to move within these environments. Previous observations of stromatolites documented a preferential orientation of cyanobacteria, but there was no mathematicalRead more
Marine stromatolites are generated through the interactions of environmental parameters and specific microbial processes. The activities of endolithic bacteria, that bore canals through calcium carbonate (CaCO3) sand grains (ooids) and reprecipitate the CaCO3 as a single layer (i.e. micritic laminae) are especially important in the longer term stability of the stromatolite macrostructure. Image analysis and classification approaches have been usedRead more