Abstract: The invention relates to a component of rare earth permanent magnet material, and the atomic percents of the material are Re(x)Fe(100x-z-a-b-c)B(z)Nb(a)Al(b)M(c), wherein x=12-16, z=5.5-6.5, a=0.05-1, b=0-0.8, and c=0-3. Re stands for rare earth elements, which comprises one or more of Nd, Pr, Gd, Ho, Dy and Tb. By adding Nb, Hcj can be improved, the rectangle degree of J-H demagnetization curve can be improved, and the temperature stability of the product can also be improved; and by adding Nb, the amount of Dy and Tb in heavy rare earth can be reduced, and the cost of the material can also be reduced.

Abstract: The invention relates to a method of manufacturing high-performance neodymium iron boron permanent magnet material, which improves the coercive force of a magnet by replacing Dy with heavy rare earth element Tb, and simultaneously reduces the production cost by replacing Nd with a small amount of Pr. The neodymium iron boron permanent magnet material containing Pr and Tb comprises (Nd,Pr)x, Feresidual, By, Dyz, Tbu, Coy, and Alw; the atomic percents of the elements are respectively 7?x?15, 5.5?y?8, 0.05?z?6, 0?u?2, 0?v?3, 0?w?1.5 and Fe and inducted impurity from raw material for the residual. The compounding, smelting, dusting, moulding and sintering processes are performed according to the atomic percents. The added Tb improves the anisotropy field of the molecule of the magnet, therefore, the coercive force of the magnet is obviously improved.

Abstract: A centrifugal fan includes a fan frame (20), and a stator (30) and a rotor (40) received in the fan frame. The fan frame includes a bottom base (22), an opposite top cover (21) and a side wall (23) interconnecting the bottom base and the top cover. A first air inlet (24a) is defined in the top cover and a second air inlet (24b) is defined in the bottom base. The rotor includes a hub (41) and a plurality of blades (42) extending from an outer periphery of the hub. An air flow channel (48) is formed between an outer periphery of the blades and the side wall of the fan frame. A cylindrical wall (26, 26a) is formed around one of the first air inlet and the second air inlet to guide airflow from the first and second air inlets into the air flow channel and block the airflow in the air flow channel from flowing back towards the first and second air inlets.

Abstract: A computer-implemented method, system, apparatus, and article of manufacture for memory overload management. The method includes: collecting memory application information of at least one node of a computer system that is implementing the method; predicting a memory overload period and an overload memory size of a first node where memory overload will occur based on the memory application information; and scheduling a memory space according to the memory overload period and the overload memory size.

Abstract: A method and system for document clustering. The method includes: extracting text feature information of the documents, establish a social network based on information related with the documents, performing graph clustering based on the social network to obtain structural sub-set, extracting structural feature information of the structural sub-set, and performing clustering on the documents based on the text feature information and the structural feature information.

Abstract: A method and system for document clustering. The method includes: extracting text feature information of the documents, establish a social network based on information related with the documents, performing graph clustering based on the social network to obtain structural sub-set, extracting structural feature information of the structural sub-set, and performing clustering on the documents based on the text feature information and the structural feature information.

Abstract: A proxy server and a hierarchical network system and a distributed workload management method. According to one embodiment of this disclosure, the proxy server includes: a rate controller configured to, based on measured request-related information and service quality parameters relative to service levels of requests, periodically determine a dispatch rate for requests of each service level, wherein the sum of the dispatch rate for respective service levels is less than or equal to a predetermined rate; and a request dispatcher configured to dispatch the requests of the corresponding service level in accordance with the dispatch rate determined by the rate controller. One aspect of the disclosure realizes a low overhead, highly scalable, simple and efficient workload management system to achieve QoS assurance and overload protection.

Abstract: A computer processing method includes receiving network data; filtering a node with a degree higher than a predefined threshold in the network data; storing the filtered node and its neighborhood relationship; clustering the filtered network data to obtain primary group(s); and obtaining a final group based on the filtered node and its neighborhood relationship and the primary group(s). The computer processing method and a corresponding system can be applicable to the processing for network data of large scale, and reduce greatly the processing time for clustering the network data of large scale, and the invention can be implemented well in parallel.

Abstract: A proxy server and a hierarchical network system and a distributed workload management method. According to one embodiment of this disclosure, the proxy server includes: a rate controller configured to, based on measured request-related information and service quality parameters relative to service levels of requests, periodically determine a dispatch rate for requests of each service level, wherein the sum of the dispatch rate for respective service levels is less than or equal to a predetermined rate; and a request dispatcher configured to dispatch the requests of the corresponding service level in accordance with the dispatch rate determined by the rate controller. One aspect of the disclosure realizes a low overhead, highly scalable, simple and efficient workload management system to achieve QoS assurance and overload protection.

Abstract: Described is a pre-adhesive, curable composition comprising an acid-functional (meth)acrylate copolymer and a novel (meth)acryloyl-aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive composition.

Abstract: A computer-implemented method, system, apparatus, and article of manufacture for memory overload management. The method includes: collecting memory application information of at least one node of a computer system that is implementing the method; predicting a memory overload period and an overload memory size of a first node where memory overload will occur based on the memory application information; and scheduling a memory space according to the memory overload period and the overload memory size.

Abstract: An apparatus and method for assisting in delivering update contents in computer networks are provided. The computer networks also comprise at least one peer client, and the assistant apparatus comprises: an evaluating unit configured to evaluate a user's interaction preference according to the user's interaction history; and a prefetching unit configured to evaluate, in response to the received update notification, whether to prefetch the update contents corresponding to the update notification according to the evaluated interaction preference, and, if prefetching, obtain the update contents from at least one peer client. The corresponding method is also provided. With the apparatus and method in this invention, the update contents in computer networks can be delivered between peer clients, not via the server, which reduces the server load without impairing user experience on client side.

Abstract: A UPS system includes one or more UPS units with identical or different capacities. A control circuit, used to control a DC/AC inverter of the UPS unit, includes a voltage feedback control circuit and a current feedforward control circuit. The voltage feedback control circuit is used to control the amplitude and the waveform of load voltage. The current feedforward control circuit is used to operate the DC/AC inverter of the UPS unit as a virtual fundamental resistor and a virtual harmonic resistor which are serially connected to an output terminal of the DC/AC inverter such that each UPS unit can be distributed to provide an output current according to the capacity ratio of the UPS system.

Abstract: A motherboard device includes a first connecting interface coupled to a first graphics card, a second connecting interface coupled to a second graphics card, a power source connected electrically to the first connecting interface for supplying electric power to the first graphics card via the first connecting interface, and a switch unit interconnecting electrically the power source and the second connecting interface, and operable so as to switch between an ON-state, where the power source supplies electric power to the second graphics card via the second connecting interface, and an OFF-state, where the electric power from the power source is not supplied to the second graphics card.

Abstract: A pre-adhesive syrup copolymer composition comprising an acid functional acrylate solute copolymer, a monomer solvent mixture, and a polyaziridine crosslinking agent is disclosed.

Abstract: A centrifugal pump impeller includes front and back shrouds and a plurality of pumping vanes therebetween, each pumping vane having a leading edge in the region of an impeller inlet and a trailing edge, the front shroud has an arcuate inner face in the region of the impeller inlet, the arcuate inner face having a radius of curvature (RS) in the range from 0.05 to 0.16 of the outer diameter of the impeller (D2) The back shroud includes an inner main face and a nose having a curved profile with a nose apex in the region of the central axis which extends towards the front shroud, there being a curved transition region between the inner main face and the nose. Fr is the radius of curvature of the transition region and the ratio Fr/D2 is from 0.32 to 0.65. Other ratios of various dimensions of the impeller are also described.

Abstract: Described is a pre-adhesive, curable composition comprising an acid-functional (meth)acrylate copolymer and a novel (meth)acryloyl-aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive composition.

Abstract: A pump casing for a centrifugal pump, which comprises an inlet opening, a discharge outlet, and a transition surface extending between an inner peripheral surface of the main pumping chamber and an inner peripheral surface of the discharge outlet, the transition surface arranged for separating an in use exit flow of material in the discharge outlet from an in use recircula tion flow of material in the main pumping chamber. The transition surface has a cutwater having a profiled section which comprises a protrusion which extends irregularly from an otherwise generally rounded arched or U-shaped transition surface and is configured such that, in use, the velocity and/or turbulence resulting from the in use flow of the material being pumped in the main pumping chamber is reduced.

Abstract: A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the shrouds, the pumping vanes being disposed in spaced apart relation. Each pumping vane includes a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes. Each passageway has associated therewith a discharge guide vane, each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds.