Starting from the San Francisco Bay Area on this map of the U.S. shaded by population density, we see that TV towers have footprints that do not cover everything. The uncovered spaces are “holes” in spectrum usage that can be reclaimed by cognitive radios. As we take a virtual trip along Interstate 80, we see from the plot at the top that there are lots of channels not being used throughout the...

For a nite group G the commutativity degree denote by d(G) and dend:$$d(G) =frac{|{(x; y)|x, yin G,xy = yx}|}{|G|^2}.$$ In [2] authors found commutativity degree for some groups,in this paper we nd commutativity degree for a class of groups that have high nilpontencies.

The genus Melilotus contains altogether some 20 species (WIERSEMA et al. 1990) in the world which mostly distributed in Europe, Central and SW. Asia and N. Africa (HUCHINSON 1964). BOISSIER (1872) listed 13 species of Melilotus in which 6 of them are found in the Iranian flora. PARSA (1948) following Boissier’s work referring some new collections made by other workers, listed the same species n...

Recently we have reformulated the octonions as quasissociative algebras (quasialgebras) living in a symmetric monoidal category. In this note we provide further examples of quasialgebras, namely ones where the nonassociativity is induced by a Z Z n-grading and a nontrivial 3-cocycle.

With the addition of IBM System ze application assist processors (zAAPs) and integrated information processors (zIIPs) to the portfolio of special-purpose IBM System z processors, the reinvention of the IBM mainframe continues. Jointly, zAAPs and zIIPs provide significant IBM System z9e integrated and cost-effective processing cycles for today’s strategic Javae and DB2t for z/OSt programming pl...

This paper was originally presented to the 2005 Annual UK-CMG Conference in Warwickshire, UK. At that time, details on z/9 109 server and z/OS V1R7 were not available. That paper was accepted for presentation by the Computer Measurement Group at the 2005 CMG International Conference. The CMG Program Committee required that the final paper be submitted no later than September 16 . By that paper ...

One of the steps to reconstruct the 3-D geometry of biological objects from a stack of 2-D microscopic images, is to align the individual slices with respect to each other. Due to complex internal structures and imaging artifacts, automatic methods do not always lead to reliable results. Visual feedback consisting of sagittal and coronal cross-sections is very useful to validate the alignment r...

Factors Affecting School Participation of Visually impaired children is a narrative inquiry on the affecting factors that hinders visually at school and home from learning. This research aims exploring current scenario participation visual in education its factors. I used qualitative design with approach. The site this study was one community schools Parsa district. population two students teac...