A s I approach the end of my 12th year as a faculty member at Sacramento State, I find myself with a relatively long mental list of students who have been through my classes, earned their degrees, and moved on to the next stages of their careers. It is always fun to get phone calls, e-mails, Facebook status updates, and even office visits from them. (While working on this letter, I was visited ...

there area lot of mobile computer devices with a variety of applications and users tend to use them more. due to the limitations of mobile devices, running most of the procedures are impossible. to resolve this problem, mobile devices can be connected to the grid, to use the facilities of grid. on the other hand the communication mechanisms are different for each device and they cannot be conne...