Abstract: The present disclosure provides a method for planning a distribution network with reliability constraints based on a feeder corridor, including determining installation states of respective elements in the distribution network; determining an objective function, the objective function being an objective function of minimizing a total investment cost of the distribution network; obtaining fault-isolation-and-load-transfer time and fault recovery time in a case where the feeder segment of each feeder line that is contained in each feeder corridor fails; determining constraint conditions including reliability constraints; building a distribution network planning model according to the objective function and the constraints; and solving the distribution network planning model built to obtain optimal solutions as planning states and reliability indexes to plan the distribution network.

Abstract: A shower curtain assembly is designed to provide users with an apparatus that provides much wide shower space for consumers than traditional one, prevents the curtain from moving inward, eliminate water spilling onto the floor, and even allows the user to sit on a top periphery of a bathtub near the curtain when the shower is in use. It is simply comprised of a shower curtain support rod that bows outward from a shower enclosure along its length, a shower curtain, hooks, and means that secures the shower curtain to achieve the abovementioned goal. The means includes main weights attached to the lower portion of the curtain, wires connected to the lower portion of the curtain and holders fixed to the bottom edges of the sidewalls of the shower enclosure, and wires with magnets attached. Only one of them needs to be chosen for the shower enclosure for the aforementioned functions.

Abstract: A friction type resistance booster chain includes a locating structure and a set of chain pieces arranged staggeringly into an upper and a lower row and fitted in the locating structure. Each of two adjacent chain pieces has a force receiving surface being opposite in direction and being able to contact the locating structure. Each of two adjacent chain pieces has a contacting surface therebetween. The contacting surfaces of the adjacent chain pieces contact successively so that the chain pieces can be joined into one integer by means of a corrugated leaf spring or chain plates. The friction type resistance booster chain can be used in numerous fields of clutch, overdrive clutch, brake, speed changer, speed differentiator, tight coupler, overload protector, damper, etc. The friction type resistance booster chain is of simple structure, convenient manufacture, reliable operation, low cost, and it is a brand new elemental component for various machineries.