Abstract: A detection system includes a node and a verification server, wherein the node includes first processing circuitry configured to generate a plurality of random values based on a seed received from the verification server, and generate a response based on information on an area of a first storage content specified by the plurality of generated random values, and transmit the generated response to the verification server, and the verification server includes second processing circuitry configured to generate a plurality of random values based on the seed, generate a verification response based on information on an area of a second storage content specified by the plurality of generated random values, determine whether the response received from the node matches the verification response, and output a determination result.

Abstract: A detection system includes two or more nodes and a base station that holds information on each of the nodes, wherein the base station includes first processing circuitry configured to search for a circuit passing through all nodes in a network only once, sequentially calculate as many hash values as a number of nodes in the network, and notify each node of an order in the circuit, a hash value according to the order among the calculated hash values, and a node in a subsequent stage in the circuit, and each of the nodes includes second processing circuitry configured to send a hash value notification of which is provided and a challenge to a node in a subsequent stage according to the order notification of which is provided, and verify whether or not the sent hash value matches a value calculated from the hash value notification of which is provided.

Abstract: A clip body (11) of a harness clip member (10) is provided with a stem (14) which integrally projects from a lower face of an umbrella-like flange (13), and a pair of left and right elastic locking pieces (15, 15) formed on a tip end of the stem (14). A band connecting section (16) including a gate-like frame member where the band member (12) is inserted through has a pair of left and right side parts (16a, 16b), and an upper part (16c) which connects the side parts (16a, 16b). In one of the side parts (16b), wedge-like notches (16d, 16d) are formed at a symmetric position where tip ends (16e, 16e) are opposed to each other such that lateral widthwise direction size of the side part (16b) is reduced. A narrow weak section (19) is provided between these tip ends (16e, 16e).

Abstract: A vacuum shield device of an electron beam welding apparatus including a plate of a rectangular shape formed with a slit for allowing a beam of electrons to pass therethrough, a box-shaped member secured to the undersurface of the rectangular plate with its walls surrounding the slit, and a shield member secured to the outer periphery of the lower portions of the walls of the box-shaped member. The shield member includes a base formed of a heat-resisting and flexible material maintained in pressing engagement with the upper surface of the workpiece by pressing means. The force with which the pressing means forces the base against the workpiece is adjusted by pressure control means. The box-shaped member is formed with a cutout at the lower portion of either end wall.

Abstract: An method for electron beam welding including the step of preparing an appropriate number of vacuum chamber units. Each of the chamber units has opposite open ends and is provided with a first adaptor for accommodating an electron beam welding gun and a second adaptor for accommodating an evacuating device. The vacuum chamber units are connected in series to form one longer chamber. Workpieces to be welded to each other are put into the longer chamber. Then, the longer chamber is closed at the opposite outermost open ends by end closure members, and thereafter, electron beam welding is performed.