Abstract: A controller for determining degradation of the motor, the controller includes a first acquisition unit for acquiring an impedance between the coil and the core, an estimation unit for estimating the total amount of heat input to the motor based on the magnitude of the impedance between the coil and the core, and a determination unit for determining the remaining life due to thermal degradation of the motor based on the total amount of heat input estimated by the estimation unit.

Abstract: The present disclosure relates to a holding device and a holding method that enable an object, such as a mobile terminal, to be held more stably. The present disclosure includes a first member and a second member that slides telescopically with respect to the first member. The first member is provided with: a fixing member that fixes the second member by frictional force by being pressed by the second member that slides inside the first member; and a pressing mechanism that presses the fixing member against the second member. The present disclosure can be applied to, for example, a tablet holder.

Abstract: A manufacturing method for a hydroelectric power generation system includes removing a transaxle including a first motor generator from an end-of-life hybrid electric vehicle, and assembling a hydraulic turbine to a rotary shaft coupled to the first motor generator in the removed transaxle. The rotary shaft to which the hydraulic turbine is assembled may be an engine shaft connected to an engine of the hybrid electric vehicle when the transaxle is mounted on the hybrid electric vehicle.

Abstract: It is to provide an imaging lens that can maintain telecentricity, sufficiently correct various aberrations, and acquire an excellent resolution, while being small and light. The imaging lens comprises, in order from an object side towards an image surface side, a first lens which is a biconvex lens, a diaphragm, a second lens which is a meniscus lens having a negative power whose convex surface faces the image surface side, and a third lens which is a meniscus lens having a positive power whose convex surface faces the object side, wherein conditions expressed by each of following expressions are to be satisfied: 0.7?f1/fl?1, ?6?f2/fl??2.8, and 3?f3/fl?10 (where, fl: focal distance of the entire lens system, f1: focal distance of the first lens, f2: focal distance of the second lens, and f3: focal distance of the third lens).

Abstract: It is to provide an imaging lens that can maintain telecentricity, sufficiently correct various aberrations, and acquire an excellent resolution, while being small and light. The imaging lens comprises, in order from an object side towards an image surface side, a first lens which is a biconvex lens, a diaphragm, a second lens which is a meniscus lens having a negative power whose convex surface faces the image surface side, and a third lens which is a meniscus lens having a positive power whose convex surface faces the object side, wherein conditions expressed by each of following expressions are to be satisfied: 0.7?f1/fl?1, ?6?f2/fl??2.8, and 3<f3/fl?10 (where, fl: focal distance of the entire lens system, f1: focal distance of the first lens, f2: focal distance of the second lens, and f3: focal distance of the third lens).