Abstract:
A method for switching node main-standby controllers based on content distribution network is disclosed by the present invention, including the process that a node standby controller detects the status of the current node main controller, and when the node main controller is abnormal, the node standby controller selects one node standby controller to be the new node main controller by replacement according to a preset rule. A content distribution network is also disclosed by the present invention. The present invention can avoid the problem that a manager changes the node main controller blindly, which is caused by a network anomaly while not the failure of the node main controller, thus the performance of the manager is effectively improved and the bandwidth of the network is saved.
Abstract:
The present invention provides a mobile broadband device, and relates to the field of communications technologies. The mobile broadband device includes a casing, a Printed Circuit Board Assembly (PCBA), and an antenna. The antenna and the PCBA are both set in the casing, and the PCBA can be slidably pulled out or retracted back along the casing. The antenna is fixedly set on an inner side of the casing and forms a hollow space for accommodating the retracted PCBA, there is a contact point set on the antenna, and the contact point is electrically connected to a feed point of the PCBA. With the mobile broadband device, the antenna does not individually occupy part of space in the casing without affecting the performance of the antenna; therefore, the volume and length of the mobile broadband device are effectively reduced, and the portability of the mobile broadband device is effectively improved.
Abstract:
Disclosed herein are phosphor compositions having high gadolinium concentrations. Some embodiments include a thermally stable ceramic body comprising an emissive layer, wherein said emissive layer comprises a compound represented by the formula (A1-x-zGdxDz)3B5O12, wherein: D is a first dopant selected from the group consisting of Nd, Er, Eu, Mn, Cr, Yb, Sm, Tb, Ce, Pr, Dy, Ho, Lu and combinations thereof; A is selected from the group consisting of Y, Lu, Ca, La, Tb, and combinations thereof; B is selected from the group consisting of Al, Mg, Si, Ga, In, and combinations thereof; x is in the range of about 0.20 to about 0.80; and z is in the range of about 0.001 to about 0.10. Also disclosed are thermally stable ceramic bodies that can include the composition of formula I. Methods of making the ceramic body and a lighting device including the ceramic body are also disclosed.
Abstract:
An indirect printer includes a system for alternating the pressure in a transfer nip by manipulating the transfer roller. The system includes a pair of pivotable collars mounted about the ends of the transfer roller. The collars are pivoted towards or away from one another to bend the transfer roller and to increase or decrease, respectively, the pressure in the longitudinal center of the nip.
Abstract:
A powder lime calcining process comprises: transporting fine granules of limestones having a water content less than 4%, and a granule size less than 15 mm, from a raw material storing bin to a small material bin, transporting the materials from the small material bin into an airflow pipe by a belt conveyer, heating and drying the materials, sieving the materials by a sieving device, transporting granules into a cyclone cylinder deduster and a clothbag deduster in turn by airflow pipes, the fine powders of limestones after dedusted are transported into an intermediate bin; the materials within the intermediate bin are transported to four preheating cyclone cylinders by a pneumatic lift pump and airflow pipes, and are preheated and separated; the materials after separated are transported into three cooling cyclone cylinders for cooling and separating the materials, finally transported into a finished product bin by a finished product transporting system.
Abstract:
An image transfer system for use in an indirect printer includes a support roller for a transfix roller. The support roller is configured to apply pressure to a center portion of a nip formed between a transfix roller and an imaging drum while the transfix roller applies pressure to the ends of the nip. This configuration is particularly advantageous for use with imaging drums and transfix rollers having thin walls.
Abstract:
A method for product portfolio analysis includes selecting a set of solution points along a curve of order benefit as a function of the number of products in a product portfolio and performing a heuristic between an adjacent pair of solution points that approximates the curve between the adjacent pair of solution points. An apparatus that can perform the product portfolio analysis is also described.
Abstract:
The present invention relates to electronic technologies, and in particular, to a plug and an electronic device with the plug. The present invention solves the following problem: In the conventional art, an electronic device with a plug occupies too large space in the direction vertical to the surface of an external device when the electronic device is inserted in a slot of the external device. A plug of the present invention takes on the following features: when a head end of the plug is inserted in a slot of an external device, the plug is electrically connected to the slot; a back end of the plug is electrically connected to a main circuit board of an electronic device equipped with the plug; a sliding structure is set on the plug and integrated with the electronic device equipped with the plug; and the plug can slide relative to a shell of the electronic device through the sliding structure, and a head end of the plug can slide out of an edge of the shell in a direction that intersects a maximum extension direction of the shell through the sliding structure. The electronic device with the plug includes the shell, the main circuit board located in the shell, and the plug disclosed herein. A pair of slidable plugs may be used to enable selective mounting of the device.
Abstract:
A modulation method and modulator for an envelope tracking power supply. An output of a multi-level switching regulator (202) in the envelope tracking power supply modulator is in parallel connection with an output of a linear regulator (201) via an inductor (203) and supplies power to a load. The modulation method for the envelope tracking power supply includes: generating a first control signal (209) according to the current (211) obtained from inputting a first reference level signal (206); comparing the amplitude of a second reference level signal (2061) obtained according to the first reference level signal (206) with preset amplitudes of at least three levels, and outputting a second control signal (210) according to the comparison result and the first control signal (209); the multi-level switching regulator (202) outputting a level signal of corresponding amplitude according to the second control signal(210), and loading the amplitude of the level on the inductor (203) to output an inductive current (208′); and linearly regulating the first reference level signal (206) via a linear regulator (201) to obtain a voltage output (207) to the load. The present disclosure resolves the problem of fixed rate of change of current output by the switching regulator of the envelope tracking power supply regulator and cannot adjust to different load current change rates, thus the inductive current outputted by the multi-level switching regulator can better track the load current change.
Abstract:
A method is disclosed that includes computing, using at least one uniformly fine-grain data parallel computing unit, a mean-square error regression within a regression clustering algorithm. The mean-square error regression is represented in the form of at least one summation of a vector-vector multiplication. A computer program product and a computer system are also disclosed.