Abstract: A solar cell includes a semiconductor material having a dielectric layer over a light-receiving surface of the semiconductor material, a plurality of printed fire-through contacts passing substantially through the dielectric layer, each contact extending longitudinally in a first dimension, and a conductive finger extending longitudinally in a second dimension substantially perpendicular to the first dimension and electrically connecting the plurality of contacts to first and second busbars at opposite ends of the conductive finger. The conductive finger has at least one first portion overlaying and electrically connecting to the plurality of contacts, wherein each of the plurality of contacts extends beyond the first portion of the conductive finger at one or both sides of the first portion of the conductive finger in the first dimension, and wherein the first portion of the conductive finger overlays the dielectric.

Abstract: The present disclosure provides a twisting machine for automatic donning, including an outer yarn branch rail arranged at the middle position of the twisting machine, wherein the outer yarn branch rail is positioned above the twisting machine, so as to successively drive the outer yarn carrier assembly to deliver the outer yarn winding package by suspending; further including an inner yarn branch rail arranged at the both sides of the twisting machine, the inner yarn branch rail is positioned above the twisting machine, so as to successively drive the inner yarn carrier assembly to deliver the inner yarn winding package by suspending. The forementioned structure enables the outer yarn winding package and the inner yarn winding package to be delivered high-efficiently in large scale by suspending and conveying, so as to largely reduce the labor intensity of operators and greatly improve production efficiency.

Abstract: A lifting system for inner yarn rails relates to the technical field of twisting and weaving equipment in factories, the system comprises an in-air conveying rail, and a carrier unit, wherein the in-air conveying rail is configured to convey the carrier unit, and the carrier unit is configured to carry a winding package; an inner yarn-carrier-lifting section is arranged on the in-air conveying rail, the inner yarn-carrier-lifting section is positioned on both sides of a twisting machine; when the inner yarn-carrier-lifting section rises, it communicates with the in-air conveying rail; when the inner yarn-carrier-lifting section descends, it approaches the position of a spindle bucket of the twisting machine. The winding packages delivered each time by one carrier unit can correspond to every spindle position of the twisting machine, dramatically improving the delivery efficiency of the winding packages.

Abstract: The present disclosure provides a whole-process automatic loading-and-unloading and logistics system, including an outer yarn preparation area, an inner yarn preparation area, a weaving area and an in-air conveying rail; the outer yarn preparation area is configured to have a carrier assembly, which delivers an outer yarn winding package to an outer yarn branch rail of a twisting machine in a twisting area via the out yarn main rail of the in-air conveying rail; in the inner yarn preparation area, the carrier assembly delivers an inner yarn winding package to an inner yarn branch rail of the twisting machine in the twisting area via the inner yarn main rail of the in-air conveying rail; in the twisting area, the carrier assembly delivers a yarn product to a yarn product donning rail in the weaving area via the yarn product main rail of the in-air conveying rail.

Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.

Abstract: An image display method for a head mounted display (300) is disclosed. The head mounted display (300) includes a first display screen (3011) and a second display screen (3012). In a first time period S1 of an ith display cycle T, the head mounted display (300) displays an ith frame of a first image on the first display screen (3011). After stopping displaying the ith frame of the first image, the head mounted display (300) displays an ith frame of a second image on the second display screen (3012) in a second time period S2 of T. After the second time period, no image is displayed on the first display screen (3011) and the second display screen (3012). According to the method, a peak current of a device when displaying an image can be reduced.

Abstract: The present invention relates to a selective catalytic reduction (SCR) catalyst comprising a support, vanadium and antimony, a catalytic article comprising the SCR catalyst, and an exhaust treatment system for an internal combustion engine comprising the SCR catalyst. In one embodiment, the invention provides an SCR catalyst for reduction of 5 nitrogen oxides, comprising: a support, and an active material on the support; wherein the support, calculated as its oxide, is present in the SCR catalyst in an amount of 40 to 99% by weight, relative to the total weight of the SCR catalyst; the active material comprises vanadium and antimony; the vanadium, calculated as V2O5, is present in the SCR catalyst in an amount of 1 to 15% by weight, relative to the total weight of the SCR catalyst; the 10 antimony, calculated as Sb2O3, is present in the SCR catalyst in an amount of 0.5 to 20% by weight, relative to the total weight of the SCR catalyst; wherein the SCR catalyst, after hydrothermally aged at 550° C.

Abstract: A solar cell structure (10) comprises a semiconductor material having a first doped region (12) and at least one second doped region (26) of the same polarity as that of the first region (12). The solar cell structure (10) further comprises at least one dielectric layer (20) at the surface of the first region (12), and a conductive portion (18) located over the at least one second region (26) to form an electrical contact with the at least one second region (26). The at least one second region (26) traverses the conductive portion (18) at least three times such that at least three electrical contacts (32) are formed between the at least one second region (26) and the conductive portion (18).

Abstract: An image display method for a head mounted display (300) is disclosed. The head mounted display (300) includes a first display screen (3011) and a second display screen (3012). In a first time period S1 of an ith display cycle T, the head mounted display (300) displays an ith frame of a first image on the first display screen (3011). After stopping displaying the ith frame of the first image, the head mounted display (300) displays an ith frame of a second image on the second display screen (3012) in a second time period S2 of T. After the second time period, no image is displayed on the first display screen (3011) and the second display screen (3012). According to the method, a peak current of a device when displaying an image can be reduced.

Abstract: The present disclosure relates to a method including: receiving resource requests from clients and converting the resource requests into search requests in sequence; searching a resource list of sensor nodes of cloud according to search conditions of the search request and obtaining a resource ID of the sensor node that meets the search conditions; searching a data list of the sensor node and reading a working frequency of the sensor node in the resource list; comparing the working frequency with a desired frequency in the search conditions to determine if buffered data in the data list can meet requirements; feeding back the buffered data to the clients if the buffered data meets the requirements; and controlling the sensor nodes to collect data according to the search conditions and priorities of the sensor nodes and sending the collected data to the clients if the buffered data cannot meet the requirements.

Abstract: A method and apparatus for controlling data transmission includes: obtaining an amount of data, the data requested by a requesting server, an instructed deadline, and candidate source servers storing the requested data; obtaining, based on the amount of data, a minimum bandwidth required for transmitting the requested data before the deadline as a required bandwidth corresponding to the requested data; and selecting one of the candidate source servers as a source server for transmitting the requested data, based on the required bandwidth, bandwidth resources of the candidate source servers and the requesting server, and remaining bandwidth of links between the candidate source servers and the requesting server. This implementation implements the selection of the most appropriate source server from the holistic perspective, ensures that data transmission can be completed before the deadline, and effectively utilize the link bandwidth.

Abstract: An electricity transmission sending device includes: a transmission circuit and a coil, where the transmission circuit includes a signal sending unit and a controlling unit, and the coil includes at least two mutually perpendicular subcoils. The signal sending unit is configured to receive a required power signal and an actually received power signal that are sent by the electricity transmission receiving device; and the controlling unit is configured to adjust a magnetic field direction in which wireless electricity transmission to the electricity transmission receiving device is performed and control the coil to transmit electric energy to the electricity transmission receiving device in an optimal magnetic field direction, where the optimal magnetic field direction refers to a corresponding magnetic field direction when a power value of electric energy actually received by the electricity transmission receiving device is maximum in a case of specific output power of the coil.

Abstract: A programming method and a programming apparatus for a core routing and switching system are provided. The method includes: obtaining a number of routing nodes and a number of resource types in each routing node in the core routing and switching system; judging whether a first requirement for resources in the routing nodes is changed to a second requirement; judging whether resources in a first routing node group corresponding to the first requirement meet the second requirement if the first requirement is changed; searching for a plurality of second routing node groups with resources meeting the second requirement if the resources in the first routing node group do not meet the second requirement; calculating a plurality of migration overheads corresponding to the plurality of second routing node groups; selecting a second routing node group corresponding to a smallest migration overhead from the plurality of second routing node groups.

Abstract: A method and apparatus for controlling data transmission includes: obtaining an amount of data, the data requested by a requesting server, an instructed deadline, and candidate source servers storing the requested data; obtaining, based on the amount of data, a minimum bandwidth required for transmitting the requested data before the deadline as a required bandwidth corresponding to the requested data; and selecting one of the candidate source servers as a source server for transmitting the requested data, based on the required bandwidth, bandwidth resources of the candidate source servers and the requesting server, and remaining bandwidth of links between the candidate source servers and the requesting server. This implementation implements the selection of the most appropriate source server from the holistic perspective, ensures that data transmission can be completed before the deadline, and effectively utilize the link bandwidth.

Abstract: A channel allocation method based on Shapley value in wireless networks is provided. The method comprises: disclosing by a PU (primary user) some idle channels denoted by serial numbers, a utilization rate threshold, a lowest selling price, and an increment between two bidding prices; SUs (secondary users) reporting the corresponding numbers of required channels to the PU; calculating a plurality of legal teams satisfying the utilization rate threshold; classifying the plurality of SUs; calculating the Shapley value of each SU in each legal team; calculating an estimated price of each multi-user in each legal team; determining the retained legal teams; performing an ascending auction process by the retained legal teams; and allocating the channels to the SUs in the winning team.

Abstract: A multi-resource task scheduling method includes: classifying concurrency packets to distinguish packets with deadline and packets without deadline; ranking packets with deadline using EDF algorithm and ranking packets without deadline using SJF algorithm; estimating a virtual start time and a virtual completion time according to ranking results; determining whether packets with deadline can be scheduled successfully; if yes, determining whether there is a packet without deadline, which can be arranged to be scheduled before the packets with deadline and can shorten average completion time, existing in the packets without deadline; and if yes, scheduling the packet without deadline, which can be arranged to be scheduled before the packets with deadline, in advance. The method can shorten the average completion time of all tasks greatly under multi-resource circumstance.

Abstract: A programming method and a programming apparatus for a core routing and switching system are provided. The method includes: obtaining a number of routing nodes and a number of resource types in each routing node in the core routing and switching system; judging whether a first requirement for resources in the routing nodes is changed to a second requirement; judging whether resources in a first routing node group corresponding to the first requirement meet the second requirement if the first requirement is changed; searching for a plurality of second routing node groups with resources meeting the second requirement if the resources in the first routing node group do not meet the second requirement; calculating a plurality of migration overheads corresponding to the plurality of second routing node groups; selecting a second routing node group corresponding to a smallest migration overhead from the plurality of second routing node groups.

Abstract: A multi-resource task scheduling method includes: classifying concurrency packets to distinguish packets with deadline and packets without deadline; ranking packets with deadline using EDF algorithm and ranking packets without deadline using SJF algorithm; estimating a virtual start time and a virtual completion time according to ranking results; determining whether packets with deadline can be scheduled successfully; if yes, determining whether there is a packet without deadline, which can be arranged to be scheduled before the packets with deadline and can shorten average completion time, existing in the packets without deadline; and if yes, scheduling the packet without deadline, which can be arranged to be scheduled before the packets with deadline, in advance. The method can shorten the average completion time of all tasks greatly under multi-resource circumstance.

Abstract: A method and a system for an online electronic auction are provided. The method includes following steps. A first bid price is obtained from a client. A second bid price is obtained from a cloud service provider. The client and the cloud service provider that win the auction and a transaction price thereof are obtained according to the first bid price and the second bid price, and identification information of the client and the cloud service provider that win the auction is matched with each other such that the client and the cloud service provider can complete an online payment according to the matched identification information.

Abstract: A universal support system for Internet of Things is provided. The system comprises: a user program management center, configured to send a request for an existing program or a request for a customized program according to an instruction input by a user; a management and control center, configured to obtain an existing program according to the request for the existing program, to generate a customized program according to the request for the customized program, to deploy the existing program, and to deploy the customized program according to the description of resource requirements and description of functional requirements of the customized program; and a sensor network, configured to run the existing program or the customized program according to the deployment, to obtain operation data during running an existing program or a customized program, and to send the operation data to the user program management center via the management and control center.