This paper contains a brief overview of suitable simulation tools available for education and research on network technologies and protocols. Among the mentioned tools we present advanced methods for network simulations using the OPNET modeler simulation tool. This is one of the most widespread simulation tools for network simulations, appropriate for both for teaching and also for the research...

The solution of the Hartree-Fock equations involves the iterative construction of the Fock matrix based on approximate molecular orbit& and the diagonal&&ion of that Fock matrix to obtain new approximations to those orbitals. A significant portion of this work is unnecessary, however, because the occupied molecular orbitals, which are required to construct the Fock matrix, represent a small fra...

Abstract. This paper treats the development of a software module for static analysis for any mechanism. The module was developed as an addition to a framework for kinematic analysis created by Raul Guenther Laboratory of Robotics of Federal University of Santa Catarina. The expanded framework can determine the static analysis of a moving mechanism, being possible to include external forces such...

Harer has shown that the mapping class group is a virtual duality groupmirroring the work of Borel-Serre on arithmetic groups in semisimple Q-groups. Just as the homology of the rational Tits building provides the dualizing module for any torsion-free arithmetic group, the homology of the curve complex is the dualizingmodule for any torsion-free, finite index subgroup of the mapping class group...

The paper describes concept and implementation details of integrating a finite element module for dike stability analysis “Virtual Dike” into an early warning system for flood protection. The module operates in real-time mode and includes fluid and structural submodels for simulation of porous flow through the dike and for dike stability analysis. Realtime measurements obtained from pore pressu...

For students, the individual dialogue-based session with the VT provides the possibility to apply the knowledge acquired in combination with indirect assessment. The VT was further embedded in the web-based online learning environment. The application of expert systems makes it possible to use different knowledge representation and explanation approaches. Independent from the course content, th...

We characterize the natural diagonal almost product (locally product) structures on the tangent bundle of a Riemannian manifold. We obtain the conditions under which the tangent bundle endowed with the determined structure and with a metric of natural diagonal lift type is a Riemannian almost product (locally product) manifold, or an (almost) para-Hermitian manifold. We find the natural diagona...

ion. Lower levels are not aware of the resources used at higher levels» Levels of abstraction are used in the resource management to provide users with virtual devices (Liskov, 1972b). In addition to the work described above in implementing specific hierarchies, research has been active in exploring various concepts used in the design of hierarchically-structured systems. These concepts in­ clu...