Abstract: A device capable of keeping track of numbers that occur in the same row, same column and the 3×3 grid involved in a particular square of a specific sudoku puzzle, thus identifying all of the numbers excluded for that square and revealing the unique remaining number from the list of 1 through 9 as the solution for the square, repetition of which process for each of the remaining empty squares ultimately yielding a complete solution for the sudoku puzzle.

Abstract: A mat with a textured surface capable of creating a corresponding texture on soft coating of joint compound on drywall surface by being pressed lightly on the compound, thus rendering the drywall textured.

Abstract: Communicating between a plurality of nodes includes sensing spectrum activity on at least one channel; generating spectrum awareness data based at least in part on the sensed spectrum activity; determining at least one selected bearer based on the spectrum awareness data; negotiating among nodes to select at least one bearer based on various spectral use criteria.

Abstract: A method, apparatus, and computer program product are presented for providing a measure of fault tolerance and security in the operation of cross layer communication agents (CCA) in a hybrid network. Specifically, this method, apparatus and computer program provide the detection and control necessary to prevent network disruptions due to failures, attacks, or link unavailability.