Abstract: A magnetron cooling fin has a flat plate shape in which one or a plurality of corrugated regions are formed in a body of the magnetron cooling fin to improve cooling efficiency thereof. A magnetron cooling fin in which a corrugated region processed to increase a contact area in contact with air is formed around a through-hole through which an anode unit of a magnetron passes, thereby improving cooling efficiency thereof.

Abstract: An apparatus and method for managing stacks for efficient memory usage. The apparatus includes a fault cause analysis unit to recognize a page fault caused by a marking page; a control unit to set the marking page, to request compression of a first stack page depending on whether a page fault occurs, to release a mapping of a second stack page that becomes empty due to the compression, and to return the second stack page; a memory allocation unit to receive the second stack page and to allocate a new stack page to the control unit upon completion of the compression; and a compression unit to compresses the first stack page at the request of the control unit.