Abstract: An information sharing system is provided with multiple communication devices that wirelessly connect with other communication devices in order to communicate with them without going through an access point. Each communication device has: an internal deduction portion that, using a reception history of notification messages received from the other communication devices, deduces which information is currently being held by each of the other communication devices; a duplication determination portion that determines whether or not the information that is currently being held by another communication device and that was deduced by the internal deduction portion matches information held by its own host device; and an information exchange portion that, when the duplication determination portion determines that the information does not match, transmits a notification message that contains the information held by its own host communication device.

Abstract: Provided is a data sharing system in which data are shared between a plurality of communication terminals capable of wirelessly transmitting and receiving a communication message to and from each other. Each communication terminal determines whether or not the own communication terminal is a specified terminal. Each communication terminal, in case of it is determined that the own communication terminal is a specified terminal, transmits a holding list that lists information about data that the own communication terminal holds, to another communication terminal through use of a communication message. Each communication terminal, when receiving a holding list from another communication terminal, transmits and receives communication messages to and from the other communication terminal that is a source of the holding list that does not match the holding list of the own communication terminal so as to share data with each other.

Abstract: Individual communication terminals are connected to a communication network in which one communication terminal functions as a parent that has a relay function, the other communication terminals function as children, and transmitting and receiving of communication messages between child communication terminals are performed via the parent. Each communication terminal transmits a holding list that lists information about data that the own communication terminal holds, to other communication terminals. Further, each communication terminal temporarily stores holding lists received from other communication terminals.

Abstract: The purpose of the present application is to provide a technique for the exchange of path information between different routing domains, which, while reducing the exchange of useless path information in the stage for constructing a hierarchical structure, can maintain robustness of path recognition that tolerates network partition.

Abstract: There is provided a communication delay time derivation method for calculating a communication delay time depending on a combination of channels set between communication terminals on a communication path in the MCH/IF environment. When selecting a channel to be used for communication in each section on the communication path per section between communication terminals on the communication path, a calculation target section specification means 82 detects an inter-terminal selected channel repetitive pattern as a pattern of the selected channels cyclically appearing on the communication path, and defines a section corresponding to the inter-terminal selected channel repetitive pattern as a communication delay time calculation target section. A communication delay time derivation means 83 derives a communication delay time in the calculation target section based on the inter-terminal selected channel repetitive pattern.

Abstract: A communications terminal (a first communications terminal) that creates a holding list that lists information about remaining data, after the removal from data held by said communications terminal of at least one item of data which is not desired to be shared with another communications terminal (a second communications terminal), and sends said list to the second communications terminal by using a communications message. The second communications terminal determines what data, among the data in the holding list received from the first communications terminal, is not held by the second communications terminal, and sends a request for the determined data to the first communications terminal by using a communications message. The first communications terminal sends the data requested by the second communications terminal to the second communications terminal, by using a communications message.

Abstract: A request possibility determination unit 13 for a communications terminal 1-1 determines whether or not communications time required for obtaining data from a communications terminal 1-2 can be secured, between the communications terminal 1-2 and the communications terminal 1-1. A data acquisition unit 12: determines data that has not been stored in a data storage unit 14, among data on a list received as a result of a communications message from another communications terminal 1-2; and requests the determined data from the communications terminal 1-2, by using a communications message on the condition that the request possibility determination unit 13 has determined that communications time can be secured.

Abstract: Upon sensing an update of any routing information entry held in a routing information storage unit (A104), an information exchange coordination unit (A105) references a node information storage unit (A102), and if a node information entry corresponding to the updated routing information entry does not exist, acquires the corresponding node information entry from another communication terminal (A1b). Alternatively, upon sensing an update of any node information entry held in the node information storage unit (A102), the information exchange coordination unit (A105) references the routing information storage unit (A104), and if a routing information entry corresponding to the updated node information entry does not exist, acquires the corresponding routing information entry from another communication terminal (A1b). This provides a communication terminal for acquiring both the node information entry and the routing information entry relating to a specific communication terminal substantially at the same time.

Abstract: Provided is a network node which is capable of achieving both of not excessively increasing the communication load in a network, and avoiding, as much as possible, failure of delivering data to an objective node, which is the distribution destination. The network node includes nonstructural distribution means for distributing data according to a nonstructural distribution in a network in which the nonstructural distribution can be performed, structure-type distribution means for distributing data according to a structure-type distribution using a link for the structure-type distribution established in the network, and selection means for selecting the structure-type distribution means or the nonstructural distribution means as broadcast distribution means by using a predetermined evaluation method, wherein the structure-type distribution means or the nonstructural distribution means selected as the broadcast distribution means by the selection means is used to distribute data in the network.

Abstract: Upon receiving a routing control message from another communication terminal (B1), a communication terminal (A1) uses a MANET routing control unit (A133) to update and manage route information when a routing domain described in the routing control message matches the routing domain of the communication terminal (A1) itself. When the communication terminal itself does not belong to the routing domain, the communication terminal uses a DTN routing control unit (A132) to update and manage route information to another routing domain, and uses a route information advertisement unit (A134) to advertise the route information to another routing domain and the routing domain to which the communication terminal (A1) itself belongs, for another communication terminal (B1).

Abstract: There is provided a communication delay time derivation method for calculating a communication delay time depending on a combination of channels set between communication terminals on a communication path in the MCH/IF environment. When selecting a channel to be used for communication in each section on the communication path per section between communication terminals on the communication path, a calculation target section specification means 82 detects an inter-terminal selected channel repetitive pattern as a pattern of the selected channels cyclically appearing on the communication path, and defines a section corresponding to the inter-terminal selected channel repetitive pattern as a communication delay time calculation target section. A communication delay time derivation means 83 derives a communication delay time in the calculation target section based on the inter-terminal selected channel repetitive pattern.

Abstract: A communication terminal, comprises: a wireless communication unit to which a plurality of channels are allocated; a channel status calculation unit that calculates, when one of the plurality of channels is set as a forwarding channel, a capacity that can be used in the one channel by the communication terminal and a capacity that can be used in the one channel by another communication terminal; and a channel selection unit that determines, when one of the plurality of channels is set as a forwarding channel, whether a capacity that can be used in the one channel by the communication terminal satisfies a required bandwidth and determines, when another communication terminal has set the one channel as a forwarding channel, whether a capacity that can be used in the one channel by the another communication terminal satisfies the required bandwidth.

Abstract: A control system for an internal combustion engine having at least one fuel injection valve for injecting fuel in a combustion chamber of the engine. A main injection and a pilot injection are performed through the at least one fuel injection valve, the pilot injection being performed before the main injection. A demand output of the engine is temporarily reduced upon a request for reducing an output of the engine. The output of the engine is reduced when the demand output is reduced. A control of the pilot injection corresponding to a state where the demand output is not reduced is performed when the demand output is reduced.

Abstract: An information sharing system is provided with multiple communication devices that wirelessly connect with other communication devices in order to communicate with them without going through an access point. Each communication device has: an internal deduction portion that, using a reception history of notification messages received from the other communication devices, deduces which information is currently being held by each of the other communication devices; a duplication determination portion that determines whether or not the information that is currently being held by another communication device and that was deduced by the internal deduction portion matches information held by its own host device; and an information exchange portion that, when the duplication determination portion determines that the information does not match, transmits a notification message that contains the information held by its own host communication device.

Abstract: A control system for an internal combustion engine having at least one fuel injection valve for injecting fuel in a combustion chamber of the engine. A main injection and a pilot injection are performed through the at least one fuel injection valve, the pilot injection being performed before the main injection. A demand output of the engine is temporarily reduced upon a request for reducing an output of the engine. The output of the engine is reduced when the demand output is reduced. A control of the pilot injection corresponding to a state where the demand output is not reduced is performed when the demand output is reduced.

Abstract: A vibration damping member to be attached to a vibrating member for damping a vibration of the vibrating member comprises a plurality of plate members which are stacked one over the other in such a manner that they are relatively moveable with respect to each other.

Abstract: The present invention provides a technique for joining polyolefin pipes by means of a polyolefin joint, the method comprising the steps of placing a treatment containing a silicon compound or a treatment containing a silicon compound and a reaction accelerator between the pipes and the joint and heating a joining portion.

Abstract: A method, an apparatus, and an integrated system using the apparatus for measuring a concentration of odorant in odorized gas which is produced by adding the odorant to un-odorized gas comprised mainly of hydrocarbon gas. In a detection absorbance measuring step, there is obtaining detection odorized gas absorbance which is absorbance of the odorized gas relative to a detecting ultraviolet light having high absorbability to the odorant and low absorbability to the un-odorized gas. In a subsequent concentration deriving step, the odorant concentration in the odorized gas is derived from the detection odorized gas absorbance.

Abstract: A base according to the present invention for defining a surface to be coated by liquid synthetic resin used for finishing a floor, comprises a porous plate, or the plate and a spacer bonded to a porous plate, the spacer having at least one hollow portion communicating to holes in the plate.