Ivan Cibrario Bertolotti IEIIT-CNR – Istituto di Elettronica e di Ingegneria dell’Informazione e delle Telecomunicazioni 11.

All animals have an effect on the environment, but some key species – called ecosystem engineers – can have a particularly large influence. Their impact can be positive, by creating and maintaining habitats and increasing biodiversity, but they can also be negative, by destroying habitats and reducing biodiversity. Interestingly, the magnitude of the effect that an ecosystem engineer has on the...

Ognjen Ilic,1,* Marinko Jablan,2 John D. Joannopoulos,1 Ivan Celanovic,3 Hrvoje Buljan,2 and Marin Soljačić1 1Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA 2Department of Physics, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia 3Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology,...

Ivan Havel remembers when in the late 1970s the Czechoslovakian state police began watching his apartment. For months he had been hosting unofficial science seminars, and the police didn't like it. "It politicized me, says the soft-spoken computer scientist and brother of Czechoslovakian president Vaclav Havel. "The police would check the people who came and ask them to identify 'themselves. Th...

This special issue of the journal JIASF is dedicated to Professor Ivan Dimovski, Member of Editorial Board, and his contributions in mathematical analysis and its applications. The basic, widely World known and explored of them, can be classified in the following topics: operational calculus, integral transforms, theory of multipliers of convolutional algebras, expansions in eigenfunctions and ...

Hurricane Ivan, a category 4 storm, passed directly over six wave-tide gauges deployed by the Naval Research Laboratory on the outer continental shelf in the northeastern Gulf of Mexico. Waves were observed with significant wave heights reaching 17.9 meters and maximum crest-to-trough individual wave heights of 27.7 meters (91 feet). Analysis suggests that significant wave heights likely surpas...

The Wiener Index, or the Wiener Number, also known as the “sum of distances” of a connected graph, is one of the quantities associated with a molecular graph that correlates nicely to physical and chemical properties, and has been studied in depth. An index proposed by Schultz is shown to be related to the Wiener Index for trees, and Ivan Gutman proposed a modification of the Schultz index with...

abstract with consideration to the resource limitation, it seems necessary to design cropping pattern scientifically in order to increase productivity of production factors and to decrease production average costs. this studyaimed at identifying the optimum cropping pattern based on comparative advantage in three counties of ilam province including darreh shahr, ivan, and shirvan chardaval. to ...