Abstract: A construction machine makes it possible for an operator to linearly push a bucket by operating an arm in a pushing direction. A controller is configured to, in case a straight locus is selected by a bucket locus selecting device, calculate a constant flow rate ratio according to a boom initial angle that is an angle of a boom sensed by a boom angle sensor at a time point when an arm is operated in a pushing direction by an operation device, and control the delivery flow rate of a first hydraulic pump such that a hydraulic fluid is discharged from a boom cylinder cap chamber at a flow rate obtained by multiplying a flow rate of a flow supplied to an arm cylinder cap chamber by the flow rate ratio while the arm is operated in the pushing direction and there is no boom operating instruction.

Abstract: To provide an electrical penetration capable of being used in nuclear power plants which are designed assuming operation under conditions of the severe accident. An electrical penetration includes: a tubular sleeve member 10; two or more insulating seal members 20A and 20B arranged inside the sleeve member 10 so as to be spaced from each other; wiring members 60, 60 disposed along the longitudinal direction of the sleeve member 10 so as to extend across two insulating seal members of the two or more insulating seal members 20A and 20B; and outer seal members provided inside the sleeve member 10 and at the outermost portions of the two insulating seal members 20A and 20B. The wiring members 60, 60 are each covered with an insulator made of the same material as those of the outer seal members 21A and 21B.

Abstract: Provided is a construction machine in which travel operability is not impaired when a combined operation is performed in which a single-rod hydraulic cylinder is driven during a travel operation. A hydraulic excavator includes a controller that controls the delivery direction and delivery flow rate of a closed-circuit pump, opens and closes a travel switching valve and an assist switching valve, and controls the delivery flow rate of the open-circuit pump, according to a travel operation lever and a work operation lever. The controller holds the assist switching valve in a closed position irrespective of whether or not the work operation lever is operated in a case where the travel operation lever is operated.

Abstract: To provide a display apparatus that makes it possible to further improve a performance in controlling video presentation according to characteristics of an eyeball of a user. A display apparatus is provided that includes a light source; a processor that performs processing on a distribution of characteristics of an eyeball; a monitoring section that monitors a state of the eyeball; a matching section that performs matching on the distribution of the characteristics of the eyeball and the state of the eyeball; and an irradiator that irradiates a specified position on a retina with video display light emitted by the light source.

Abstract: A frequency characteristics determination device that can prevent generation of a frequency response curve having an unnatural shape is provided. A CPU 11 sets pass points Pi and Pi+1 through which the frequency response curve of an audio signal should pass. Pi+1 of a frequency Xpi+1 which is higher than a frequency Xpi of the pass point Pi. The CPU 11 determines a direction point ai of a Bezier curve Ci for connecting the pass points Pi and Pi+1 based on the pass points Pi and Pi+1. The CPU 11 determines whether a frequency Xai of the direction point ai is within a reference range between not less than the frequency Xpi and not more than the frequency Xpi+1. When the frequency Xai is out of the reference range, the CPU 11 moves the direction point ai so that the frequency Xai is within the reference range.

Abstract: A frequency characteristics determination device that can prevent generation of a frequency response curve having an unnatural shape is provided. A CPU 11 sets pass points Pi and Pi+1 through which the frequency response curve of an audio signal should pass. Pi+1 of a frequency Xpi+1 which is higher than a frequency Xpi of the pass point Pi. The CPU 11 determines a direction point ai of a Bezier curve Ci for connecting the pass points Pi and Pi+1 based on the pass points Pi and Pi+1. The CPU 11 determines whether a frequency Xai of the direction point ai is within a reference range between not less than the frequency Xpi and not more than the frequency Xpi+1. When the frequency Xai is out of the reference range, the CPU 11 moves the direction point ai so that the frequency Xai is within the reference range.