Abstract: Disclosed herein is an information processing device including at least one memory for storing a program code, and at least one processor for executing an operation by processing the program code, in which the operation includes obtaining information indicating a detection result according to an operation device that includes a detection section that detects an operation by a user, and calculating, on a basis of at least one of a type of the operation, the number of times for the operation, and an amount of execution time for the operation, points to be redeemed by a user.

Abstract: There is provided a friction material. The friction material includes a fibrous material, a friction modifier, and a binder. The friction material contains potassium titanate powders, steel fibers, calcium pyrophosphate and iron oxide. An amount of the potassium titanate powders may be 10 to 30 mass %. An amount of the steel fibers may be 1 to 7 mass %. An amount of the calcium pyrophosphate may be 5 to 20 mass %. An amount of the iron oxide may be 1 to 5 mass %.

Abstract: This invention rapidly and surely joins sheet bars to each other for continuously hot rolling in a high productivity by a combination of a treatment that the front end portion and the back end portion of these sheet bars are contacted and heated at such a contact region by applying alternating magnetic fields so as to pass in a thickness direction of the sheet bar with a treatment of pushing at least one of these sheet bars.

Abstract: In this invention, a back end portion of a preceding sheet bar and a front end of a succeeding sheet bar are cut in a transfer line at an entrance side of a finish rolling mill so that at least both side edge regions of these sheet bars are contacted with each other at a butted contact state thereof and a gap is formed between both end portions and then portions to be joined int he preceding and succeeding sheet bars are locally heated and pushed to join them while gradually enlarging a joining area, whereby the required time is largely reduced as compared with the conventional technique and also it is attempted to miniaturize the heating apparatus and shorten the length of the apparatus.