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1168 results about "Low load" patented technology

Content-aware application switch and methods thereof

A content-aware application switch and methods thereof intelligently switch client packets to one server among a group of servers in a server farm. The switch uses Layer 7 or application content parsed from a packet to help select the server and to schedule the transmitting of the packet to the server. This enables refined load-balancing and Quality-of-Service control tailored to the application being switched. In another aspect of the invention, a slow-start server selection method assigned an initially boosted server load metric to a server newly added to the group of servers under load balancing. This alleviates the problem of the new server being swamped initially due to a very low load metric compared to that of others. In yet another aspect of the invention, a switching method dependent on Layer 7 content avoids delayed binding in a new TCP session. Layer 7 content is not available during the initial handshaking phase of a new TCP session. The method uses the Layer 7 content from a previous session as an estimate to help select the server and uses a default priority to scheduling the transmitting of the handshaking packets. Updated Layer 7 content available after the handshaking phase is then used to reset the priority for the transmit schedule and becomes available for use in load balancing of the next TCP session.
Owner:IBM CORP

Clustering method and device, routing method and device of cluster head and base station

The embodiment of the invention discloses clustering method and device, routing method and device of a cluster head and a base station, belonging to the technical field of wireless sensor networks. The clustering method comprises the steps of: carrying out logic region division on a target region and determining a region ID of the target region; selecting one agent node in each region, wherein a node in an agent node notification region is used as an agent; sending node state information by the node in an agent node receiving region; and selecting one node in the region by the agent node according to the information as the cluster head, wherein the region becomes one cluster. The routing method comprises the steps of: selecting one base station in which a link has lower load when transmitting data from two base stations; determining the gradient of the cluster head according to the region ID in the cluster to transmit the data to the selected base station along the diminishing direction of gradient; selecting N cluster heads with gradient less than that of a source cluster head as a next hop cluster head to transmit the data along the direction of the selected base station by the source cluster head; and selecting N cluster heads with gradient less than that of a middle hop cluster head as a next ho cluster head to transmit the data along the direction of the selected base by the middle hop cluster head.
Owner:HUAWEI TECH CO LTD +1

Brazilian split method for measuring elastic parameter of rock under extension condition

The invention discloses a Brazilian split method for measuring an elastic parameter of a rock under an extension condition, which comprises the steps of: A. horizontally putting a machined disc-shaped sample between the load bearing plates of a press machine by using a Brazilian disc split method, placing a hard steel wire respectively between the upper load bearing plate and the sample and between the lower load bearing plate and the sample, arranging a filler strip perpendicular to the symmetrical surfaces of the sample, and applying pressure on the upper load bearing plate and the lower load bearing plate to make the sample generate tension perpendicular to the action directions of an upper load and a lower load; B. carrying out analysis by using the Hooke's law in classical elasticity mechanics by combining specific conditions of the Brazilian split method; C. analyzing the stress condition of the rock and the measurement principle in the Brazilian disc split method; and D. obtaining the strain in the stress direction according to the Hooke's law from the stress condition sigma3=0, measuring epsilon1 and epsilon2, obtaining the elastic parameter of the rock sample, and arranging a strain gauge in the center position of the rock sample for measurement of epsilon1 and epsilon2. The method has the advantages of easiness for operation and use, clear principle, low material consumption, and the like. The method is suitable for wide popularization and application.
Owner:INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI

Correction method for optimization of sliding pressure of large steam turbine

The invention discloses a correction method for optimization of sliding pressure of a large steam turbine generator set of a power plant. The current research on optimization of the sliding pressure of the large steam turbine generator set operating under the low load to ensure that the generator set can operate with excellent performance under the sliding pressure during the low-load operation has great significance in improvement of the operating efficiency of the generator set. The correction method is characterized in that correction factors are adopted to correct the sliding pressure control curve of the generator set, that is, the relevance relation of the load of the generator set, the main steam pressure and the opening of the high-pressure regulating valve is expressed as Cn*Ng varies as Cp*P0*Cv. Since the specific correction factors are introduced for control elements, the load of the generator set and the main steam pressure of the control curve of the generator set under the sliding pressure in the sliding pressure deviation factor correction method, the invention ensures that the steam turbine generator is in the mode of operating under the best sliding pressure, andcan maintain the high operating efficiency of the generator set all the time.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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