Nira Krumholtz A view of technology processes in human endeavors has guided me and my colleagues to produce a model of these processes. In turn, the model combined with learning and instruction theory has influenced decisions on how students should be taught science and technology subject matter. This article discusses the model and its underlying rationale. Then a brief review of learning theo...

Research on a web application intended to provide an entertaining and engaging cultural experience for users is described. Initial discovery phase research, using user-centered design, suggested that such an application should be designed with a “less clicking, more watching” approach. Two web tour prototypes were created and tested with 24 subjects in singles and pairs conditions to analyze us...

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Optimality conditions are derived for the robust optimal design of beams subject to a combination of uncertain and deterministic transverse and boundary loads using a variational min-max approach. The potential energy of the beam is maximized to compute the worst case loading and minimized to determine the optimal cross-sectional shape which results in coupled nonlinear differential equations f...

World Wide Web has become an inevitable tool for searching, retrieving and storing the need based data. Students, teachers, researchers, librarians, and even layman all are dependents on the Internet. It has produced so many user friendly tools in order to access the information quickly. Option of the web portal or subject portals is the one. Present paper is about the practical work done in LI...

This correspondence proposes two methods for designing partially adaptive beamformers that satisfy a performance specification over a set of likely interference scenarios. Both methods choose the adaptation space in a sequential fashion; the dimension is increased one by one until the performance specification is attained. In the multilevel point design method, each dimension of the adaptation ...

We propose a method for tracking of objects contained in video sequences. Each video object is represented by a set of polygonal regions. A bottom up approach (spatial segmentation/motion estimation) is applied for the initialisation of the method, a limited human interaction is used to build the semantic map of the first frame in video sequence. The tracking of this model along a video sequenc...

Two solutions to design a thin annular disc of variable thickness subject to thermomechanical loading are proposed. It is assumed that the thickness of the disc is everywhere sufficiently small for the stresses to be averaged through the thickness. The state of stress is plane. The initiation of plastic yielding is controlled by Mises yield criterion. The design criterion for one of the solutio...

A model based on strikingly different philosophical as. sumptions from those currently popular is proposed for the design of online subject catalog access. Three design principles are presented and discussed: uncertainty (subject indexing is indeterminate and probabilis-tic beyond a certain point), variety (by Ashby's law of requisite variety, variety of searcher query must equal variety of doc...