the catalytic acvtivity of dimeric and monomeric ortho-palladated complexes [pd{c6h2(ch2nh2-(ome)2,3,4}(µ-cl)]2)2) and [pd{c6h2(ch2nh2-(ome)2,3,4}cl(pph3)](3), was investigated in heck cross-coupling reaction. these complexes are more active and efficient catalysts for heck cross-coupling reaction. the palladium complexes 2 and 3 is employed in the heck cross-coupling reaction between styrene a...

finite and boundary element methods have been used by many authors to solve mathematicalphysics problems. however, the coupling of these two methods happens to be more efficient as it combinestheir merits. in this paper, the mathematical analysis of the coupling of finite and boundary element methodsfor the helmholtz equation is presented.

The Model Coupling Environmental Library (MCEL) was developed to simplify the coupling process for models that exchange data at most every time step. Traditionally, model coupling is performed in three ways: file Input/Output (I/O), subroutinization, or Message Passing Interface (MPI). The traditional way of model coupling is through file I/O as shown by Blain1 and Hodur.2 In this case the mode...

A two dimensional numerical model of shallow water equations was developed tocalculate sub and super-critical open channel flows. Utilizing an implicit scheme the steady stateequations were discretized based on control volume method. Collocated grid arrangement was appliedwith a SIMPLEC like algorithm for depth-velocity coupling. Power law scheme was used fordiscretization of convection and dif...

An equivalent circuit model for predicting the frequency response of a square ring slot frequency selective surface (SRS-FSS) for normal incidence is described. The proposed FSS consists of an array of square patches centered within a wire grid. The presented circuit model is formed by the impedance of the wire grid that is parallel with the impedance of the patch array, also the mutual couplin...

Áhersla hefur verið lögð á það í aðalnámskrá og víðar að leikskólar starfi eftir hugmyndum um lærdómssamfélag. Markmið þessarar rannsóknar var varpa ljósi stöðu faglegs lærdómssamfélags innan leikskóla tengsl þess við menntunarlega starfsánægju starfsfólks. Spurningakönnun send til starfsfólks, annars en stjórnenda, fimm leikskólum, byggð mælitæki sem mælir víddir aðlagað íslensku leikskólastar...