Abstract: The present invention relates to a computer case fixing structure. The computer case fixing structure is a bracket, which is bended to form a reception chamber. The bracket has a protrudent part at the middle of one side. The protrudent part has a plurality of openings formed thereon so that a computer case can be inserted into the reception chamber of the bracket for being hung and positioned by the use of the openings of the protrudent part.

Abstract: A stand structure comprises a base consisting of two detachable plates. Each plate comprises a stair-shaped region formed on a corresponding inner surface of the plate for coupling the plates together, a rib formed on one side of an abutting surface of the plate so as to form a positioning trench, and a hole formed on an inner surface of the rib, whereby a computer host can be positioned thereon.

Abstract: The present invention is a system and method of a feasible point method, such as a canonical coordinates method, for solving non linear optimization problems. The method goes from a point to another point along a curve of a defined nonlinear surface. An objective function is determined from the plurality of points. Each point is given a value determined from the objective function. The objective function value is maximized to improve computational efficiency of a non linear optimization procedure.