Abstract: A tumor radiotherapy planning design method and apparatus, an electronic device, and a computer storage medium are provided, including: obtaining a current optimization parameter vector set, and calculating a current cost function value; randomly correcting the current optimization parameter vector set to generate alternative optimization parameter vector sets; then performing planning parameter optimization, and calculating corresponding total cost function values; determining current optimal or suboptimal alternative optimization parameter vector sets according to the total cost function values, sampling to update the current optimization parameter vector set and the current cost function value according to the total cost function values of the current alternative optimization parameter vector sets, and then performing an iteration repeatedly until a convergence condition is satisfied; and outputting an optimal optimization parameter vector set after the iteration, determining planning parameters, and calcu

Abstract: A device, vehicle courteous message display, is designed to express a driver's response when the need arises. Mainly, it includes a small remote control and a LED electronic display panel box. The small and handy remote control can either program or play a message. The means of message input or edit is similar with that of a cell phone message operation. Programmed words, phrases, signs, and numbers are stored in read/write memories of the display panel box. A message or a group of messages can be instantly displayed with a press of single button. The display panel can be easily placed on/near the rear window of an automobile with suction cups, double-side foam tape or Velcro.

Abstract: A window structure is provided which may be used as a rear window in a pick-up truck or the like. In certain example embodiments, the window structure includes a slidable window panel or sheet located between a pair of fixed window panels or sheets. The slidable window panel may be approximately flush with the fixed panels when in the closed position, but not in the opened position. In certain example embodiments, the movable window sheet or panel may be opened by a user actuating a latch assembly which allows one or more spring loaded pins to be moved from a locked to an unlocked position(s). When the spring loaded pins move into an unlocked position as the latch assembly is actuated, the movable window panel can be moved slightly toward the vehicle interior and then slid laterally in respective tracks in order to open the same.