How much assistance should be provided to students as they learn with educational technology? Providing help allows students to proceed when struggling, yet can depress their motivation to learn independently. Assistance withholding encourages students to learn for themselves, yet can also lead to frustration. The web-based inquiry-learning program, Voyage to Galapagos (VTG), helps students “fo...

Martin Wolf, chief economics commentator at the Financial Times, is a brilliant journalist and an able economist. Why Globalization Works is an excellent example of the author’s capacity for examination and analysis. The book is based on a series of articles on globalization that originally appeared in the FT, and on his Hayek Memorial Lecture to the Institute of Economic Affairs in London. Wol...

Lie-algebraic approach to the theory of polynomial solutions. II. Differential equations in one real and one Grassmann variables and 2x2 matrix differential equations ABSTRACT A classification theorem for linear differential equations in two variables (one real and one Grassmann) having polynomial solu-tions(the generalized Bochner problem) is given. The main result is based on the consideratio...

The intensification in the number of mobile subscribers over the preceding years leads to a situation of the Voice-oriented, data-oriented wireless telephony. It is now point in time to explore new demands and to find the new ways to broaden the mobile concepts. The Cognitive Radio (CR) is one of the essential steps that initiate the solution towards these problems. Then also there are lot of c...