Abstract:
In a networked computer system, partitioned proxies are defined that each include a cache of connection information that allows for quickly routing a remote invocation to an object without suffering the overhead of determining routing information for the object each time the object is remotely invoked. Multiple copies of an object are created in multiple computer systems. A partitioned proxy is then created that points to each copy of the object. The partitioned proxies allow quickly accessing these object copies without the overhead of synchronizing their state data. Caching connection information within the partitioned proxies allows a computer system to invoke a remote object without the performance penalty of determining with each invocation the connection information for accessing the remote object.
Abstract:
The present invention provides a service providing device and a service providing method enabling a user to accept the service by utilizing the capabilities of several various devices. An available physical device or a combination of the physical devices is selected for the user based on the service requirement, and the user accepts the service via the selected physical device or the combination of the physical devices. The invention "hides" the physical devices by using a virtual device to provide the service for users. Furthermore, the invention provides a "tailored" virtual device based on the environment around the user, the favorite of user and the requirements of the service, and therefore the invention may provide to the user the "tailored" information suitable for the user. The operating environment of the virtual device according to the invention is dynamically changeable according to the environment around the user, the favorite of user and the requirements of the service, and therefore a seamless service may be provided to the user.
Abstract:
A method for checking pipeline leakage comprises: receiving detecting parameters collected by at least one sensor with respect to pipelines in its corresponding region; gathering detecting parameters collected by the at least one sensor; analyzing the gathered detecting parameters to obtain an evolutionary tendency of detecting parameters in the corresponding region of the at least one sensor; judging if the evolutionary tendency of the detecting parameters satisfies predefined features of leakage; determining that pipeline leakage exists in the corresponding region if the evolutionary tendency of the detecting parameters satisfies the predefined features of leakage. The present invention may help to determine leak regions with a leakage having small flow quantity, and provide a user with regions with pipeline leakage to be detected based on a resource constraint.
Abstract:
An apparatus, program product and method utilize on-demand propagation of routing information to reduce the overhead associated with distributing routing information throughout a distributed computing system. The staleness of the routing information utilized in routing client requests for a particular client is gauged based upon the number and/or frequency of client requests issued for that client that require rerouting, e.g., as indicated in responses returned in response to the client requests. Once the reroutes of client requests meet a desired propagation criterion, updated routing information is then requested for the client.
Abstract:
Provides a service providing device and method enabling a user to accept the service by utilizing the capabilities of several various devices. At least one physical device is selected for the user based on the service requirement. The user accepts the service via the selected physical device or devices. The invention “hides” the physical devices by using a virtual device to provide the service for users. Furthermore, the invention provides a “tailored” virtual device based on the environment around the user, the favorite of user and the requirements of the service, and may provide to the user the “tailored” information suitable for the user. The operating environment of the virtual device according to the invention is dynamically changeable according to the environment around the user, the favorite of user and the requirements of the service. Thus, a seamless service may be provided to the user.
Abstract:
Datenverarbeitungsverfahren zur Überprüfung von Rohrleitungsleckagen in einem Rohrleitungsnetz, welches logisch in eine Vielzahl von Bereichen unterteilt ist, wobei das Verfahren Folgendes umfasst:Empfangen von Erkennungsparametern, die von mindestens einem Sensor bezogen auf Rohrleitungen in seinem entsprechenden Bereich erfasst werden;Zusammentragen von Erkennungsparametern, die von einer Vielzahl von Sensoren erfasst werden, um zusammengetragene Erkennungsparameter zu bilden;Analysieren der zusammengetragenen Erkennungsparameter, um eine Entwicklungstendenz von Erkennungsparametern in dem entsprechenden Bereich des mindestens einen Sensors zu erhalten;Beurteilen, ob die Entwicklungstendenz der Erkennungsparameter vordefinierte Leckagemerkmale erfüllt;Feststellen, dass eine Rohrleitungsleckage in dem entsprechenden Bereich vorhanden ist, wenn die Entwicklungstendenz der Erkennungsparameter die vordefinierten Leckagemerkmale erfüllt,wobei das Analysieren der zusammengetragenen Erkennungsparameter das Durchführen einer Frequenzspektrumanalyse der zusammengetragenen Erkennungsparameter umfasst, undwobei das Analysieren der zusammengetragenen Erkennungsparameter, um eine Entwicklungstendenz der Erkennungsparameter in dem mindestens einen Bereich zu erhalten, ferner Folgendes umfasst:Berechnen eines Inkrements erster Ordnung und/oder eines Inkrements zweiter Ordnung des Frequenzspektrums der zusammengetragenen Erkennungsparameter, das durch die Frequenzspektrumanalyse erhalten wird;Beurteilen von Merkmalen des Inkrements erster Ordnung und/oder des Inkrements zweiter Ordnung, um die Entwicklungstendenz der Erkennungsparameter zu ermitteln,wobei das Beurteilen, ob die Entwicklungstendenz der Erkennungsparameter die vordefinierten Leckagemerkmale erfüllt, das Beurteilen von Folgendem umfasst:ob ein Inkrement erster Ordnung des Frequenzspektrums von Erkennungsparametern innerhalb eines beliebigen Zeitraums einheitlich ist; und/oderob ein Inkrement zweiter Ordnung des Frequenzspektrums der Erkennungsparameter innerhalb eines beliebigen Zeitraums einheitlich ist; und/oderob das Inkrement erster Ordnung des Frequenzspektrums von Erkennungsparametern innerhalb eines beliebigen Zeitraums eine nichtfallende Funktion ist; und/oderob das Inkrement zweiter Ordnung des Frequenzspektrums von Erkennungsparametern zeitunabhängig ist.
Abstract:
Provides a service providing device and method enabling a user to accept the service by utilizing the capabilities of several various devices. At least one physical device is selected for the user based on the service requirement. The user accepts the service via the selected physical device or devices. The invention “hides” the physical devices by using a virtual device to provide the service for users. Furthermore, the invention provides a “tailored” virtual device based on the environment around the user, the favorite of user and the requirements of the service, and may provide to the user the “tailored” information suitable for the user. The operating environment of the virtual device according to the invention is dynamically changeable according to the environment around the user, the favorite of user and the requirements of the service. Thus, a seamless service may be provided to the user.
Abstract:
Provides a service providing device and method enabling a user to accept the service by utilizing the capabilities of several various devices. At least one physical device is selected for the user based on the service requirement. The user accepts the service via the selected physical device or devices. The invention “hides” the physical devices by using a virtual device to provide the service for users. Furthermore, the invention provides a “tailored” virtual device based on the environment around the user, the favorite of user and the requirements of the service, and may provide to the user the “tailored” information suitable for the user. The operating environment of the virtual device according to the invention is dynamically changeable according to the environment around the user, the favorite of user and the requirements of the service. Thus, a seamless service may be provided to the user.