Satellite observations from 1985–2006 indicate that in the last 2 decades the temperature in the upper layer of the Mediterranean Sea has been increasing at an average (±SD) rate of 0.03 ± 0.008°C yr–1 for the western basin and 0.05 ± 0.009°C yr–1 for the eastern basin. The increases in temperature are not constant throughout the year but occur primarily during May, June and July. Maximum incre...

This paper introduces a new suite of computer simulations from the Physics Education Technology (PhET) project, identifies features of these educational tools, and demonstrates their utility. We compare the use of PhET simulations to the use of more traditional educational resources in lecture, laboratory, recitation and informal settings of introductory college physics. In each case we demonst...

The PhET Interactive Simulations are well-known resources that originated in physics and are now used in multiple science disciplines. Many new educational innovations are developed but do not find a large audience—PhET, however, has been successful in becoming widely-used. This is the first of several planned case studies of widely-used educational innovations to characterize the strategies us...

H.-H. Hinrichsen1, B. von Dewitz1, J. Dierking1, H. Haslob2, A. Makarchouk3, C. Petereit1 and R. Voss4 1GEOMAR – Helmholtz Centre for Ocean Research, Düsternbrooker Weg 20, 24105 Kiel, Germany 2Thünen-Institute of Sea Fisheries, Palmaille 9, 22767 Hamburg, Germany 3Fishery Resources Research Department, Institute of Food Safety, Animal Health and Environment ‘BIOR’, Daugavgrivas 8, Riga 1048, L...

an artificial neural network (ann) model is developed for the analysis, simulation, and prediction of the austenite reversion in the thermo-mechanical treatment of 304l austenitic stainless steel. the results of the ann model are in good agreement with the experimental data. the model is used to predict an appropriate annealing condition for austenite reversion through the martensite to austeni...

in this article, the crystallization of polyethylene is investigated by the modified weighted density approximation. also, a direct correlation function of polyethylene based on the rism theory is used. the free energy of a polyethylene is calculated using the density functional theory. the crystallization and also the solid and liquid densities of polyethylene are calculated and compared with ...

During the last years the European Centre for MediumRange Weather Forecasts (ECMWF) released new editions of the wave model WAM. The latest model version has been evaluated on both wave height and spectrum in close and shallow seas as well as in open oceans. The purpose of this work is twofold: First to discuss some evaluation results concerning the model performance and secondly to study the s...