Abstract: Provided for a device and a method for controlling a gas turbine, a gas turbine control program, and the gas turbine are: a first opening setting unit that sets a first IGV opening command value for an inlet guide vane based on factors excluding a surge limit of a compressor; a second opening setting unit that sets a second IGV opening command value for the inlet guide vane based on the surge limit of the compressor, and corrects the second IGV opening command value based on a pressure in the compressor; an opening selecting unit that selects a maximum opening as an IGV opening command value for the inlet guide vane among the first IGV opening command value and the second IGV opening command value; and an opening control unit that adjusts the opening of the inlet guide vane based on the IGV opening command value S selected by the opening selecting unit.

Abstract: Provided for a device and a method for controlling a gas turbine, a gas turbine control program, and the gas turbine are: a first opening setting unit that sets a first IGV opening command value for an inlet guide vane based on factors excluding a surge limit of a compressor; a second opening setting unit that sets a second IGV opening command value for the inlet guide vane based on the surge limit of the compressor, and corrects the second IGV opening command value based on a pressure in the compressor; an opening selecting unit that selects a maximum opening as an IGV opening command value for the inlet guide vane among the first IGV opening command value and the second IGV opening command value; and an opening control unit that adjusts the opening of the inlet guide vane based on the IGV opening command value S selected by the opening selecting unit.

Abstract: A monitoring system comprises: a measurement unit; and an analysis unit, wherein the measurement unit measures traffic information relating to messages inputted to a device to be monitored and messages outputted from the device to be monitored, and wherein the analysis unit calculates one or more indices on the basis of a prescribed relational expression and the measured traffic information, and detects that a specific change in state has occurred in the device to be monitored on the basis of the indices or a comparison between a change in the indices and a threshold.

Abstract: A monitoring device executes: aggregating a number of messages for each type of message transmitted or received at nodes using test results; classifying the respective messages into either an original message that serves as an origin among messages transmitted and received by a system to be monitored, or a generated message that is generated in the system when the original message is transmitted to any of the plurality of nodes; analyzing a relationship between the original message and the generated message on the basis of a number of messages classified as the original message and a number of messages classified as the generated message, thereby creating a matrix indicating the relationship between the original message and the generated message; and determining that the system has undergone a failure if a value of an element inside the matrix is outside of a normal range.

Abstract: An apparatus for terminating and replaying transmission control protocol (TCP) communication between a server and cellular phone is disclosed. The TCP relay apparatus performs precise control for each TCP connection in the process of executing default TCP transmission control for the server and performing wireless-optimized TCP transmission control for the cell phone while facilitating setup for determination of the type of a network to which a communication destination terminal belongs. The TCP relay apparatus includes a unit capable of setting TCP control information suitable for the characteristics of a network linked to the destination device on a per-TCP connection basis, a unit which enables an application program to instruct the TCP control information setting, and a unit which determines the network type by judging whether the connection is a passive connection to a listen port or a TCP connection to the server.

Abstract: In a gateway device holding a traffic relay function, the storage cost and the retrieval time for a great amount of access logs are prevented from increasing. The gateway device includes a traffic relay function, a protocol analysis function, a log output function and a log retrieval function. These functions output an access log in compressed or uncompressed form in compliance with a rule for each protocol designated by the manager in accordance with the degree of importance. The retrieval is carried out for the uncompressed file.

Abstract: The disclosed DNS server apparatus monitors whether each service providing server apparatus is active or inactive and collects load information. When the monitored apparatus is active but congested or is unable to offer services, a virtual IP address assigned to a Sorry server apparatus is sent back as a response. When service providing server apparatuses in active state are congested or unable to provide services, the DNS server apparatus sends a server activation instruction and an IP addresses for services to the service providing server apparatuses on standby to activate them. Each service providing server apparatus on standby activates server software in response to the server activation instruction and assigns the received IP address to a network interface as a virtual IP address, thus activating the interface.

Abstract: The disclosed DNS server apparatus monitors whether each service providing server apparatus is active or inactive and collects load information. When the monitored apparatus is active but congested or is unable to offer services, a virtual IP address assigned to a Sorry server apparatus is sent back as a response. When service providing server apparatuses in active state are congested or unable to provide services, the DNS server apparatus sends a server activation instruction and an IP addresses for services to the service providing server apparatuses on standby to activate them. Each service providing server apparatus on standby activates server software in response to the server activation instruction and assigns the received IP address to a network interface as a virtual IP address, thus activating the interface.

Abstract: A communication system in which, even when an HTTP session is disconnected from a mobile device, the HTTP session can be continued or a response from a Web server can be returned to a user, without installing a special application in the mobile device. A load-distributable system is provided for realizing such operation. To that end, in a communication system having a relay device that relays a request from a portable telephone terminal (110) to a Web server (120), the relay device (130) relays a processing request from the portable telephone terminal (110) to the Web server, and stores a processing response from the Web server. The relay device (130) sends the portable telephone terminal a message to the effect that the processing response should be acquired from the relay device (130) or a message with the processing response added.

Abstract: In a gateway device holding a traffic relay function, the storage cost and the retrieval time for a great amount of access logs are prevented from increasing. The gateway device includes a traffic relay function, a protocol analysis function, a log output function and a log retrieval function. These functions output an access log in compressed or uncompressed form in compliance with a rule for each protocol designated by the manager in accordance with the degree of importance. The retrieval is carried out for the uncompressed file.

Abstract: A quantity totalizer for a three-dimensional arrangement and adjustment CAD includes integrating means for referring to parts information stored in the three-dimensional arrangement and adjustment CAD and associating line information, which is separated from the parts information for storage and which is unique to a line, with the parts information to generate integrated information in which the quantity of parts is totalized; numbering means for systematically numbering the integrated information and outputting a quantity totalization result; and comparing means for comparing the quantity totalization result output by the numbering means with a parts number column in a design drawing produced with the three-dimensional arrangement and adjustment CAD to check the parts having the same parts information and line information against each other and replacing parts numbers in the parts number column in the design drawing produced with the three-dimensional arrangement and adjustment CAD with parts numbers in the

Abstract: In a service system including client apparatuses for issuing a service request and server apparatuses for receiving a service request and providing service, there is provided a data relaying apparatus for relaying data communication between them. In response to a service request, the data relaying apparatus establishes a connection from the client apparatus to the server apparatus (destination). The data relaying apparatus relays data communication between the client apparatus and the server apparatus by using the established connection. The data relaying apparatus manages a number of connections established to each of the server apparatuses. In response to a service request, the data relaying apparatus accepts or refuses the service request so as to make a number of connections to the server apparatus equal to or less than a predetermined number, and notifies a user refused relaying of a service request that relaying is possible.

Abstract: To grant an access permission to an attached file of an e-mail stored in a file server. An access permission to the attached file is set based on information included in a first e-mail. The attached file is stored in the file server. The second e-mail that is the first e-mail from which the added file is deleted and to which reference information for accessing the added file stored in the file server is added is transmitted to a receiver side mail server and a sender side mail server. In response to an access request to the attached file based on the reference information from either of a mail sender and a mail receiver, the file server controls the access to the attached file based on an access permission that was set.

Abstract: To continue communication of a client even if an SIP server falls into a congestion state. Each of a communication gateway device and a relay method of the present invention couples to a client device and to an SIP server device for managing coupling information of the client device via a network; stores SIP-URI and a contact address of the client device that are included in a REGISTER request from the client device to the SIP server device as setup information; and when receiving an INVITE request from the client device to another client device, that is an SIP method for beginning a session, refers to the setup information, and forwards the INVITE request to the other client device.

Abstract: The present invention provides an e-mail-based chat system that is available from a terminal without a push architecture and can be used with an existing server. The invention relates to a relay apparatus to be installed on communication lines between terminals and servers consisting of a transmission server and a retrieval server. The relay apparatus puts on hold data retrieval requests received from the terminals without relaying the data retrieval requests to the retrieval server and withholds responses to the terminals. When the relay apparatus receives chat message data from a terminal, it relays the data to the transmission server. Right after the relaying of the data, the relay apparatus acquires the data from the transmission server via the retrieval server and creates response data from the acquired data, thus responding to the data retrieval requests on hold with the response data.

Abstract: To lower risks of overhead on management of an access log and of a loss of the access log due to a default and to prevent deterioration in service providing performance caused by access concentration to a specific Web server in an access relaying apparatus including a plurality of proxy servers. An access relaying apparatus has a plurality of proxy servers 23, an administration server 24 for statistic processing, and a shared disk 25 accessible from them. Each of the proxy servers outputs an access log to the shared disk, and the administration server reads the access logs from the shared disk and performs statistic processing. An access limit to a specific Web server is determined based on a result of the statistic processing, it is notified to each of the proxy servers, and a number of accesses to the Web server is controlled.

Abstract: A large-scale content delivery system may be achieved, which may send a large amount of contents without intensive management of the contents in the server. In a service providing system where a client, a service gateway, and a server are connected to each other through a network, the client sends a first message to the server by way of the service gateway. The service gateway inquires a processing method of the first message from the client of the server by using a second message that includes a part of the first message content. The server replies to the inquiry of the processing method from the service gateway with a program that describes the processing method, and the service gateway processes the first message from the client on the basis of the received processing method.

Abstract: A communication system in which, even when an HTTP session is disconnected from a mobile device, the HTTP session can be continued or a response from a Web server can be returned to a user, without installing a special application in the mobile device. A load-distributable system is provided for realizing such operation. To that end, in a communication system having a relay device that relays a request from a portable telephone terminal (110) to a Web server (120), the relay device (130) relays a processing request from the portable telephone terminal (110) to the Web server, and stores a processing response from the Web server. The relay device (130) sends the portable telephone terminal a message to the effect that the processing response should be acquired from the relay device (130) or a message with the processing response added.

Abstract: A network system having a client, a content server, application servers and a proxy server is described. The proxy server relays content and data between the client, the content server and the application servers upon a request for content from the client. The application servers process the requested content in accordance with pre-established signature and content verification requirements before the content is relayed to the client. The applications servers also provide signature and content verification management for the network.

Abstract: A periodic process scheduling method which includes receiving requests for periodical execution of processes each with a period of execution and execution time, securing allocation time for the shortest process to be executed in respective periods of execution, securing another allocation time for part of a process if full execution time of the process cannot be secured within the respective periods of execution, and starting execution of the process in secured allocation time. A data transfer management method for reducing collision in data transfer which includes storing data length of packets being transferred in a predetermined transmission time interval, storing the predetermined transmission time interval, accumulating a quantity of packets to be transferred in the predetermined transmission time interval, and limiting quantity of packets to be transferred to not be greater than data length.