摘要:
A method for equalizing optical signal power in a group of optical signals transmitted through an optical switch in an optical transmission system. In one embodiment a group of optical signals is input into an optical switch having at least one movable mirror array with a plurality of reflectors formed thereon, the optical beam being directed onto a selected at least one reflector and wherein attenuating the optical beam is accomplished by controllably detuning at least one of the selected at least one reflector to attenuate the optical beam.
摘要:
An electric generator arrangement comprises a generator and a continuously-variable ratio drive, whereby the generator can be driven at a constant speed over a range of speeds applied to an input shaft. The drive comprises an epicyclic differential gear having a planet gear carrier driven by the input shaft, a sum gear coupled to coupled to the generator and a ring gear. The ring gear can be driven at varying speeds by hydraulic units to vary the ratio of the speeds of the input shaft and the sun gear. The hydraulic units are driven by the input shaft and the speed of the ring gear is controlled by an electro-hydraulic control system which is responsive to the frequency of an output signal from a part of the generator. Fluid under pressure for the hydraulic units and the hydraulic control system is provided by a combined pump and de-aerator on the shaft of another part of the generator.
摘要:
A rotary electrical machine includes a two pole rotor carrying a winding. The rotor is contained within a thin sleeve of non-magnetic material which supports the rotor within bearings in the machine.
摘要:
A compound of Formula I in free or salt or solvate form, where R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and R11 have the meanings as indicated in the specification, is useful for treating diseases which respond to the blockade of the epithelial sodium channel. Pharmaceutical compositions that contain the compounds and processes for preparing the compounds are also described.
摘要:
The present invention relates to compounds of formula (I) wherein X, R1, R2, R3, R4 and R5 are as defined herein, which are useful for treating diseases which respond to CXCR2 receptor mediators. Pharmaceutical compositions that contain the compounds and processes for preparing the compounds are also described.
摘要:
In an embodiment of a wireless network, when a node joins the network and receives a routing advertisement, such a node transmits the routing advertisement to all its neighbors. The node then receives transmission from the neighboring nodes indicating interest in joining the advertised network. If more than a threshold number of neighboring nodes are interested in the advertised route, the newly joining node inserts the route advertisement in a beacon transmission. If there is not a threshold level of interest, the node unicasts only to the neighbors who indicated interest in the advertised network. In an embodiment, the node repeats the above steps on a predetermined time basis (e.g., one per day) in order to determine interest in the advertised route that may have newly arisen.
摘要:
One embodiment of the present disclosure sets forth an improved way for a node to manage beacon traffic. Specifically, the node determines that a new message is to be transmitted to one or more neighboring nodes. The node assigns a value to the message based on certain message characteristics. The node utilizes this message value to determine whether to unicast the message to each one of the subscribing nodes or to add the message to the node's beacon. If adding the message to the node's beacon results in a beacon length that is above a desired limit, then the node may add a second beacon to carry the new message. One advantage of this approach is that beacon transmission times are kept low in order to reduce the likelihood that the beacon encounters interference from artificial or natural sources, including interference from beacons transmitted by other nodes.
摘要:
A node within a wireless mesh network performs a path analysis on an advertised path to an access point that has a cost value less than the cost value of the current primary path to the access point. Depending on the cost value difference between the respective cost values of the advertised path and the current primary path, the node may perform a different type of path analysis. Based on the result of that path analysis, the node may change paths to the access point and use the advertised path as the primary path. Further, the node maintains a secondary path so that, in the event that the primary path fails, the node can default to using the secondary path.
摘要:
One embodiment of the present invention sets forth a technique for a node within a network to adjust one or more routing parameters based on certain network parameters. A node monitors certain network metrics such as the mean time between routing drops. In response to changes in these network parameters, the node changes certain routing parameters, such as the holddown time. The node may store network metrics and associated routing parameters that result in preferred network operating conditions. The node may pre-load these beneficial settings upon the occurrence of a particular condition such as a system reset of the node. Moreover, a node may share these beneficial settings with neighboring nodes on the same network. One advantage of this approach is that cost savings are achieved when a node within a network may be installed without preconfiguring the node with specific routing parameters.
摘要:
Compounds of Formula I: and pharmaceutically acceptable salts and solvates thereof, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 have the meanings as indicated in the specification, are useful for treating diseases mediated by blockade of the epithelial sodium channel. Pharmaceutical compositions that contain the compounds and processes for preparing the compounds are also described.