Abstract: A method for generating a cargo handling transport path for transporting suspended cargo suspended from arm tip portion of crane arm from an optional cargo handling initial position to an optional cargo handling target position by swinging movement of the crane arm, and the method includes: calculating the cargo handling transport path and a cargo handling transport velocity for transporting the suspended cargo in a straight line track as viewed from at least the vertical direction in at least a part of the cargo handling transport path based on the cargo handling initial position, the cargo handling target position, the range of the arm minimum swinging circle of the crane arm, the upper limit swinging angular velocity of the crane arm, the upper limit swinging angular acceleration of the crane arm, the upper limit luffing velocity of the crane arm, and the upper limit luffing acceleration of the crane arm.

Abstract: A cargo crane including an arm turning mechanism that turns a crane arm; an arm luffing mechanism that adjusts the luffing angle; an arm extension and contraction mechanism that adjusts the arm length; and a control device that calculates a trajectory in which a suspended cargo is conveyed, and that controls the mechanisms. The control device calculates the trajectory so as to be a straight line trajectory as viewed from at least the vertical direction; calculates a turning angle ?, a luffing angle ?, and an arm length L so as to cause the trajectory to be the straight line trajectory by using the cargo start position, the cargo target position, a maximum speed vmax, a suspended cargo swing cycle T, and a start-up time T1; and controls the mechanisms so as to achieve the calculated turning angle ?, luffing angle ?, and arm length L.

Abstract: A lifting magnet including a plurality of electromagnetic coils that are disposed in a nesting arrangement and capable of being independently ON/OFF-controlled and voltage-controlled. By using the plurality of electromagnetic coils in a selective or appropriately combined manner, the lifting magnet secures a sufficient magnetic flux penetration depth during conveyance of steel plates, and can easily and highly precisely control the magnetic flux penetration depth in accordance with the number of steel plates to be lifted.

Abstract: A method of predicting a corrosion loss of a metal material, the method including: inputting a prediction request point including a use period of the metal material for which a corrosion loss is desired to be predicted and second environmental parameters indicating a use environment of the metal material in the use period; calculating a similarity degree between first environmental parameters in corrosion loss data and the second environmental parameters in the prediction request point; dimensionally reducing the first environmental parameters in the corrosion loss data to a latent variable taking the similarity degree into consideration; and predicting a corrosion loss of the metal material for the prediction request point based on a prediction expression constructed using the latent variable and the similarity degree.

Abstract: A method of predicting a corrosion loss of a metal material, the method including: inputting a prediction request point including a use period of the metal material for which a corrosion loss is desired to be predicted and second environmental parameters indicating a use environment of the metal material in the use period; calculating a similarity degree between first environmental parameters in corrosion loss data and the second environmental parameters in the prediction request point; dimensionally reducing the first environmental parameters in the corrosion loss data to a latent variable taking the similarity degree into consideration; and predicting a corrosion loss of the metal material for the prediction request point based on a prediction expression constructed using the latent variable and the similarity degree.