Abstract: An electric compressor includes a housing; a rotary shaft; an impeller connected to at least a first end portion of the rotary shaft in an axial direction of the rotary shaft, of the first end portion and a second end portion of the rotary shaft in the axial direction; and a pair of air bearings supporting the rotary shaft such that the rotary shaft is rotatable relative to the housing. A load on the first end portion is larger than a load on the second end portion. The pair of air bearings includes a first air bearing, and a second air bearing supporting the rotary shaft at a position closer to the second end portion of the rotary shaft than the first air bearing is. A load carrying capacity of the first air bearing is larger than a load carrying capacity of the second bearing.

Abstract: Provided is a piezoelectric material filler including alkali niobate compound particles having a ratio (K/(Na+K)) of the number of moles of potassium to the total number of moles of sodium and potassium of 0.460 to 0.495 in terms of atoms and a ratio ((Li+Na+K)/Nb) of the total number of moles of alkali metal elements to the number of moles of niobium of 0.995 to 1.005 in terms of atoms. The present invention can provide a piezoelectric material filler having excellent piezoelectric properties, and a composite piezoelectric material including the piezoelectric material filler and a polymer matrix.

Abstract: Provided is a piezoelectric material filler including alkali niobate compound particles having a ratio (K/(Na+K)) of the number of moles of potassium to the total number of moles of sodium and potassium of 0.460 to 0.495 in terms of atoms and a ratio ((Li+Na+K)/Nb) of the total number of moles of alkali metal elements to the number of moles of niobium of 0.995 to 1.005 in terms of atoms. The present invention can provide a piezoelectric material filler having excellent piezoelectric properties, and a composite piezoelectric material including the piezoelectric material filler and a polymer matrix.

Abstract: Provided is a piezoelectric material filler including alkali niobate compound particles having a ratio (K/(Na+K)) of the number of moles of potassium to the total number of moles of sodium and potassium of 0.460 to 0.495 in terms of atoms and a ratio ((Li+Na+K)/Nb) of the total number of moles of alkali metal elements to the number of moles of niobium of 0.995 to 1.005 in terms of atoms. The present invention can provide a piezoelectric material filler having excellent piezoelectric properties, and a composite piezoelectric material including the piezoelectric material filler and a polymer matrix.

Abstract: A data transfer method includes: executing a process that stores sensor information including duplicate degrees and position information, the duplicate degrees indicating an amount of computers as transmission sources of inhibit signals received by the first computer; executing a process that transmits the inhibit signal including the duplicate degree in the sensor information to a computer that is present in a position to which direct communication via the short-distance radio communication is possible; executing a process that stores the duplicate degree in the inhibit signal, associates the duplicate degree with the transmission source of the inhibit signal, and increases the duplicate degree in the sensor information; and executing a process that transmits the position information in the sensor information to the management device in a case where the duplicate degree in the sensor information is higher than the duplicate degree associated with the transmission source of the inhibit signal.

Abstract: Provided is a piezoelectric material filler including alkali niobate compound particles having a ratio (K/(Na+K)) of the number of moles of potassium to the total number of moles of sodium and potassium of 0.460 to 0.495 in terms of atoms and a ratio ((Li+Na+K)/Nb) of the total number of moles of alkali metal elements to the number of moles of niobium of 0.995 to 1.005 in terms of atoms. The present invention can provide a piezoelectric material filler having excellent piezoelectric properties, and a composite piezoelectric material including the piezoelectric material filler and a polymer matrix.

Abstract: A method of transferring data executed by a data transfer device, the method includes receiving a plurality of first data and a plurality of second data, accumulating the received plurality of first data and the received plurality of second data respectively, sending, to a first node, the plurality of first data accumulated during a first period, and sending, to a second node, the plurality of second data accumulated during a second period, wherein, the first period is longer than the second period when a first data amount of the plurality of first data to be sent to the first node per unit time is greater than a second data amount of the plurality of second data to be sent to the second node per the unit time.

Abstract: A linear motion guide unit includes a guide rail and a slider. A carriage of the slider has a central portion located above the guide rail, and wing portions which extend downward from widthwise opposite ends of the central portion. Shoulder portions of the carriage located in inner boundary regions between the central portion and the wing portions of the carriage have first inclined surface so that the shoulder portions have padding portions. Corner portions of the guide rail located between an upper surface and longitudinal sides of the guide rail have second inclined surfaces which face the first inclined surfaces of the carriage and extend in the longitudinal direction parallel to the first inclined surfaces. The first inclined surfaces have an inclination angle substantially the same as an inclination angle of the nose surfaces of threaded holes formed in the carriage for attachment of a counterpart member.

Abstract: Contemplated are simplification and cost reduction in arrangement of connecting a pair of steel pipes to each other. A joint mechanism for a pair of steel pipes 1A, 1B include inner joints 10A, 10B and an outer joint 20 disposed circumferentially across and between the inner joints 10A, 10B. The outer joint 20 incudes inward key portions 23 engageable with outward circumferential grooves 13 of the inner joints 10A, 10B. The outer joint 20 is formed of a plurality of unit members 12 disposed side by side around the inner joints 10A, 10B. A standard unit member 21A includes an engaging projecting portion 24 whereas the inner joints 10A, 10B respective include an engaging sunk portion 14 engageable with the engaging projecting portion for preventing detachment of the standard unit member 21A to the outside.

Abstract: A data transfer method includes: executing a process that stores sensor information including duplicate degrees and position information, the duplicate degrees indicating an amount of computers as transmission sources of inhibit signals received by the first computer; executing a process that transmits the inhibit signal including the duplicate degree in the sensor information to a computer that is present in a position to which direct communication via the short-distance radio communication is possible; executing a process that stores the duplicate degree in the inhibit signal, associates the duplicate degree with the transmission source of the inhibit signal, and increases the duplicate degree in the sensor information; and executing a process that transmits the position information in the sensor information to the management device in a case where the duplicate degree in the sensor information is higher than the duplicate degree associated with the transmission source of the inhibit signal.

Abstract: A method of transferring data executed by a data transfer device, the method includes receiving a plurality of first data and a plurality of second data, accumulating the received plurality of first data and the received plurality of second data respectively, sending, to a first node, the plurality of first data accumulated during a first period, and sending, to a second node, the plurality of second data accumulated during a second period, wherein, the first period is longer than the second period when a first data amount of the plurality of first data to be sent to the first node per unit time is greater than a second data amount of the plurality of second data to be sent to the second node per the unit time.

Abstract: A linear motion guide unit includes a guide rail and a slider. A carriage of the slider has a central portion located above the guide rail, and wing portions which extend downward from widthwise opposite ends of the central portion. Shoulder portions of the carriage located in inner boundary regions between the central portion and the wing portions of the carriage have first inclined surface so that the shoulder portions have padding portions. Corner portions of the guide rail located between an upper surface and longitudinal sides of the guide rail have second inclined surfaces which face the first inclined surfaces of the carriage and extend in the longitudinal direction parallel to the first inclined surfaces. The first inclined surfaces have an inclination angle substantially the same as an inclination angle of the nose surfaces of threaded holes formed in the carriage for attachment of a counterpart member.

Abstract: A communication control device that controls a communication device configured to be coupled to a network using a first communication, and to be coupled to an information processing device using a second wireless communication, the communication control device includes a processor configured to store identification information of the communication device and connection information used for setting the second wireless communication, control the communication device to stop the second wireless communication when it is detected that the communication device exists within a wireless communication area of a wireless communication device coupled to the network, transmit, to the wireless communication device, the connection information associated with the identification information of the communication device, and control the wireless communication device to establish a new wireless connection with the information processing device using the connection information.

Abstract: Contemplated are simplification and cost reduction in arrangement of connecting a pair of steel pipes to each other. A joint mechanism for a pair of steel pipe piles 1A, 1B includes an inner joint 10A provided in the steel pipe pile 1A, an inner joint 10B, an outer joint 20 disposed circumferentially between and across the inner joint 10A of the steel pipe pile 1A and the inner joint 10B of the steel pipe pile 1B, and a key member 30 configured to prevent relative movement between the pair of steel pipe piles 1A, 1B in a longitudinal direction of these steel pipes 1.

Abstract: End rings fit over the opposite ends of the retainer inserted in the outer sleeve to keep properly the retainer against either of rotational and axial directions. End rings fit over the opposite ends of the retainer extending out of the outer sleeve to make abutment against the outer sleeve to cover the outside peripheries of the retainer. The circular groove of the retainer is composed of the raceway groove having the raceway surface with the slit, the return passage lying in parallel with the raceway groove and a pair of turnaround passages to intercommunicate between the raceway groove and the return passage. The end rings are kept in angular location against rotation by means of engagement between the first projections at the opposite ends of outer circular groove of the retainer and the second projections in the inside circular grooves of the end rings. The outer sleeve is to keep the retainer in lengthwise direction.

Abstract: A porous compact impregnated with lubricant fits into a lengthwise hole in the carriage to apply the lubricant around balls rolling through a return passage to realize maintenance-free lubrication. The carriage has a flat upper portion which has threaded holes lying midway between the widthwise opposed bulges to fasten counterparts to the carriage. The carriage has widthwise opposed corners where the flat upper portion merges the respective bulges. The corners each have therein a lengthwise hole in which the cylindrical porous compact impregnated with lubricant is inserted to extend across the overall length of corners. The bulges of the carriage have threaded holes which are used to fasten the end caps to the fore and aft ends of the carriage.

Abstract: A communication system includes an information processing apparatus storing a plurality of filter rules corresponding to respective application programs, a first base station covering a first area, and a second base station covering a second area overlapping the first area, wherein the second base station is configured to couple to a terminal device located in the second area, store a first filter rule corresponding to a first application program, and filter a communication caused when the terminal device executes the first application program, and the first base station is configured to acquire, from the second base station, application program information indicating the first application program, determine whether to acquire, from the information processing apparatus, the first filter rule corresponding to the first application program based on a first overlapping state of the first area and the second area, and acquire the first filter rule from the information processing apparatus.

Abstract: A distribution control method executed by a computer configured to manage a plurality of nodes that controls communication between a plurality of communication devices and a plurality of information processing devices, each of the plurality of nodes having a filter rule indicating whether each of the information processing devices is permitted as a communication destination and collectively receiving, from the computer, all filter rules updated by the computer during a stopped state when the each of the plurality of nodes transits from the stopped state to an operating state, the method includes stopping at least one node among the plurality of nodes; operating at least one node among the plurality of nodes and is in the stopped state for a time period exceeding a predetermined threshold; and distributing the updated filter rules to the at least one operating node among the plurality of nodes, when the filter rules are updated.

Abstract: End rings fit over the opposite ends of the retainer inserted in the outer sleeve to keep properly the retainer against either of rotational and axial directions. End rings fit over the opposite ends of the retainer extending out of the outer sleeve to make abutment against the outer sleeve to cover the outside peripheries of the retainer. The circular groove of the retainer is composed of the raceway groove having the raceway surface with the slit, the return passage lying in parallel with the raceway groove and a pair of turnaround passages to intercommunicate between the raceway groove and the return passage. The end rings are kept in angular location against rotation by means of engagement between the first projections at the opposite ends of outer circular groove of the retainer and the second projections in the inside circular grooves of the end rings. The outer sleeve is to keep the retainer in lengthwise direction.

Abstract: A communication control device that controls a communication device configured to be coupled to a network using a first communication, and to be coupled to an information processing device using a second wireless communication, the communication control device includes a processor configured to store identification information of the communication device and connection information used for setting the second wireless communication, control the communication device to stop the second wireless communication when it is detected that the communication device exists within a wireless communication area of a wireless communication device coupled to the network, transmit, to the wireless communication device, the connection information associated with the identification information of the communication device, and control the wireless communication device to establish a new wireless connection with the information processing device using the connection information.