Abstract: A loudspeaker including: a magnetic circuit, a voice coil, a vibration plate, a housing, and a magnetic fluid disposed between a plate and the voice coil in a magnetic gap. The magnetic circuit includes a first flow path which passes from a vibration plate side to a rear surface. The housing includes a second flow path which extends the first flow path, and a third flow path which passes through from the vibration plate side to the second flow path. A proportion of a second area to a first area matches with a proportion of an outer area to an inner area, which is an area of the vibration plate corresponding to an inner side with respect to the voice coil.

Abstract: A sound output device includes a loudspeaker including a diaphragm, a loudspeaker back space located behind the loudspeaker on a side opposite to a diaphragm, and a cable which is electrically connected to the loudspeaker and extends from the inside of the loudspeaker back space to the outside. The loudspeaker includes a diaphragm back space located in the back of the diaphragm on a side opposite to the sound radiating direction, and a sound hole having a first opening opened to the diaphragm back space and a second opening opened to the loudspeaker back space. When viewed from the first opening toward the second opening, the cable inside the loudspeaker back space is disposed outside the region of the sound hole.

Abstract: In a production support system, process knowledge information is updated using machine learning on the basis of implementable process information, and implementable process information is output as a production plan of a product. Accordingly, production can be carried out considering factors, such as restart cost of facilities used in each of processes, for which skilled experience and knowledge are required with respect to the production of the product, and therefore the product can be produced effectively with low cost. Further, even when limitation conditions such as production capacity or quantity of a product exist for each of processes, suitable production can be carried out that satisfies these limitation conditions.

Abstract: A loudspeaker (100) includes a magnetic circuit (110) having a magnetic gap (111); a voice coil body (120) disposed in the magnetic gap (111) in an inserted state; a diaphragm (130) to which the voice coil body (120) is attached; a frame (140) to which the outer circumferential, portion of the diaphragm (130) and the magnetic circuit (110) are attached; a vibration preventing member (150) including a viscoelastic body attached to the outer circumferential, portion of the diaphragm (130) in an annular shape; and a holding member (160) having an annular shape and sandwiching the outer circumferential portion of the diaphragm (130) and the vibration preventing member (150) between the frame (140) and the holding member.

Abstract: Included are a yoke, a magnet fixed to the yoke, a plate fixed to an end surface of the magnet opposite to an end surface to which the yoke is fixed, a voice coil disposed inside a magnetic gap formed by facing portions disposed in the yoke and the plate, respectively, to face each other, a vibration plate fixed to the voice coil, a holding member which holds the yoke and the vibration plate, and a magnetic fluid disposed between the facing portion of the plate and the voice coil. A coating containing a fluorine resin is formed on a surface of a portion contacting the magnetic fluid in at least one of the plate and the voice coil.

Abstract: Provided are: a biological reaction device that reduces stress and damage visited on microorganisms, etc., in a biological reaction, and enables a biological reaction in which microorganisms, etc., are used to be efficiently and economically performed; and a biological reaction method in which the biological reaction device is used. In order to reduce the stress and damage visited on microorganisms, etc., the amount per minute of a biological culture solution that is extracted from a culture tank and then returned to the culture tank after being admixed with micro-nano-bubbles is set as at least 1% to less than 48% of the biological culture solution accommodated in the culture tank, and the reduction in the dissolved oxygen concentration associated therewith is compensated for by setting the oxygen partial pressure of a gas phase in the upper part of the biological culture solution in the culture tank as at least 0.23 atm to less than 0.

Abstract: To make it possible to plan and provide a new production schedule reflecting characteristics or tendencies appearing in production schedules planned in the past. A schedule planning section calculates, on the basis of history information concerning production schedules of products planned in the past, a schedule pattern including production order of the products while considering constraint conditions in producing the products, rearranges the production order of the products according to the calculated schedule pattern, and creates a plurality of schedule candidates concerning a production schedule of the products. A schedule evaluating section evaluates the plurality of schedule candidates on the basis of evaluation indicators corresponding to the constraint conditions, and selects a best production schedule out of the plurality of schedule candidates.

Abstract: An action-value function initializing unit inputs search information including a history of a solution, a constraint equation, and an initial state of a selectable domain of a decision variable, sets a decision variable selected in each step and a value of the decision variable as a policy, and initializes an action-value function including the policy, a selectable domain of a decision variable before policy decision, and a selectable domain of a decision variable after the policy decision as parameters. A search unit receives information of the action-value function initialized by the action-value function initializing unit, obtains a value of a corresponding action-value function from the policy, the domain of the decision variable before the policy decision, and a domain of the action-value function after the policy decision, searches for a policy in which the action-value function is largest, and searches for an optimum solution for the problem information.

Abstract: A speaker system includes an enclosure, a speaker unit, and an elastic sheet. The speaker unit is disposed in the enclosure. The elastic sheet includes a first fiber made of a resin and a second fiber made of a resin, and is disposed in the enclosure. The second fiber is thicker than the first fiber and entangled with the first fiber.

Abstract: Systems and methods for inter-tool communication in toolbus systems in cable telemetry. The systems can include downhole equipment deployable into a wellbore via a cable, The downhole equipment can include a toolbus, a toolbus master node including a buffer, and nodes operatively coupled to the toolbus master node via the toolbus. Each of the nodes includes a buffer. Of the one or more nodes, a sending node sends a message, and a receiving node receives the message via the toolbus master node and sends a buffer full message to the toolbus master node when the buffer of the receiving node is full. The toolbus master node sends a buffer full message to the sending node and the receiving node when the buffer of the receiving node is full, and buffers the message at the toolbus master node until the receiving buffer is not full.

Abstract: A loudspeaker includes a bottom plate, an internal magnet, an internal plate, an external magnetic part, a frame, a diaphragm, and a voice coil. The internal plate includes a cutout portion so that the internal plate is smaller than the internal magnet when viewed from the top surface of the internal plate. Between the voice coil and the internal plate, there are a holding portion holding magnetic fluid and a void part having a void. The magnetic fluid is held in part of the cutout portion.

Abstract: The system includes an ideal plan creation unit configured to create an ideal plan of the respective processes in a first process order based on a process knowledge information being a relationship between the product and an implementation time of the respective processes and on a predetermined indicator, a plan candidate planning unit configured to create a plurality of the plan candidates in the respective processes in an order opposite to the first process order based on a limitation condition being a limitation or condition which imposes on the respective processes, a plan candidate selection unit configured to calculate similarity between the ideal plan and each of the plurality of the plan candidates and to select the plan candidate having a high similarity to the ideal plan as an implementation plan, and a learning unit configured to reflect the selected implementation plan on the process knowledge information.

Abstract: Toolstring topology mapping systems having a downhole toolstring including a master node controller and a plurality of nodes and related methods. The methods involve querying each of the plurality of nodes in the downhole toolstring for actual topology information, receiving actual topology information from each of the plurality of nodes in the downhole toolstring in response to querying, and generating a topology map of the downhole toolstring based on the actual topology information from each of the plurality of nodes in the downhole toolstring. The methods can also involve comparing the topology map with the input topology information to identify topology mismatch and then take remedial actions if needed.

Abstract: A navigation method for a navigating apparatus of a moving device, including obtaining weight information that includes a plurality of weight coefficients and storing the weight information, detecting one or a plurality of paths through which the moving device is capable of moving, acquiring information regarding a position of a destination with respect to the moving device as destination positional information, acquiring information regarding characteristics of topography in surroundings of the moving device as topographical characteristics information, calculating worth correlation information regarding the one or plurality of detected paths to the destination using the acquired destination positional information, the acquired topographical characteristics information and the stored weight information, and estimating a worth score of each of the one or plurality of paths to the destination based on the calculated worth correlation information.

Abstract: A loudspeaker includes a bottom plate, an internal magnet, an internal plate, an external magnetic part, a frame, a diaphragm, and a voice coil. The internal plate includes a cutout portion so that the internal plate is smaller than the internal magnet when viewed from the top surface of the internal plate. Between the voice coil and the internal plate, there are a holding portion holding magnetic fluid and a void part having a void. The magnetic fluid is held in part of the cutout portion.

Abstract: A speaker system includes an enclosure, a speaker unit, and an elastic sheet. The speaker unit is disposed in the enclosure. The elastic sheet includes a first fiber made of a resin and a second fiber made of a resin, and is disposed in the enclosure. The second fiber is thicker than the first fiber and entangled with the first fiber.

Abstract: Methods and systems for failure point diagnostics in cable telemetry at a wellsite. The methods involve providing a system includes a cable operatively coupling between a surface modem and a downhole modem that is operatively coupled to a downhole toolstring of one or more downhole tools via a toolbus. The methods further involve generating a plurality of test signals, sequentially applying the test signals across one or more test loops in the cable telemetry system, and generating a failure point alert when at least one of the test signals fails in at least one of the test loops. The failure point alert identifies which component of the cable telemetry system caused the test signal to fail.

Abstract: A steel base material (11) is subjected to a quenching step, a machining step, a plating step, and a tempering step to form a rod (4). In the quenching step, two axially spaced portions of the steel base material are quenched to form quenched portions (12 and 13). In the machining step, plastic working or cutting is performed on a portion of the steel base material between the two quenched portions to form a full-circumferential groove (4C1) in a machined portion 4C. In the plating step, the quenched portion (12) is not plated, but a region of the steel base material including the quenched portion (13) is plated to form a coating layer (16). In the tempering step, the quenched portions are tempered.

Abstract: Provided is a communication system capable of enhancing convenience for remotely operating a movable-body-mounted apparatus mountable in a movable body such as a vehicle. For example, a communication system includes a movable-body-mounted apparatus including: a movable body information storage part which stores movable body information including a received signal quality of a radio wave used for communication to/from a center server and information on a vehicle; a separation determination part which determines whether or not a user who moves along with the vehicle is separated from the vehicle; and a movable body information notification part which notifies the user of the movable body information stored in the movable body information storage part when the separation determination part determines that the user is separated from the vehicle.

Abstract: A navigation method for a navigating apparatus of a moving device, including obtaining weight information that includes a plurality of weight coefficients and storing the weight information, detecting one or a plurality of paths through which the moving device is capable of moving, acquiring information regarding a position of a destination with respect to the moving device as destination positional information, acquiring information regarding characteristics of topography in surroundings of the moving device as topographical characteristics information, calculating worth correlation information regarding the one or plurality of detected paths to the destination using the acquired destination positional information, the acquired topographical characteristics information and the stored weight information, and estimating a worth score of each of the one or plurality of paths to the destination based on the calculated worth correlation information.