Abstract: The present disclosure provides an ultra-high temperature resistant cement slurry system for cementing and the preparation method and use thereof. The cement slurry system comprises cement, an ultra-high temperature strength stabilizer, an ultra-high temperature reinforcing material, a density regulator, an ultra-high temperature suspension stabilizer, a dispersant, a fluid loss additive, a retarder, a defoaming agent and water, wherein the ultra-high temperature suspension stabilizer comprises an ether-based starch, an aluminosilicate and a polyalcohol polymer. The method for preparing the cement slurry system includes dry mixing and wet mixing raw materials homogeneously, respectively, and then homogeneously mixing the dry mix and wet mix to obtain the cement slurry system. The present disclosure further provides use of the cement slurry system for cementing in deep wells and ultra-deep wells at high and ultra-high temperatures.

Abstract: A micro/nanoparticle-reinforced composite solder for low-temperature soldering and a preparation method thereof belong to the manufacturing field of lead-free low-temperature soldering solders. Micro/nanoparticle-reinforced tin-based alloy solder powder is formed by diffusely mixing micro/nano-sized Cu, Ag and Sb particles with a molten metal tin and atomizing the mixture, and then blended with low-melting-point SnBi-based alloy solder powder and a conventional flux to prepare a micro/nanoparticle-reinforced composite solder. In soldering at a temperature below 200° C.

Abstract: A system includes a power sourcing equipment (PSE) unit. The PSE unit includes a plurality of network ports. The PSE unit also includes a PSE board coupled to the plurality of network ports and configured to provide power to a plurality of powered devices (PDs) external to the PSE unit via respective network ports. The PSE unit also includes a sensing circuit configured to determine a power consumption parameter for the PSE board. The PSE unit also includes a controller configured to change a power state for at least one of the plurality of network ports based at least in part on the power consumption parameter.

Abstract: A method includes identifying an object in a disparity map to be tracked by a movable platform, determining positions of a plurality of elements representing the object in a first image frame captured by an imaging device carried by the movable platform, selecting one or more characteristic points of the plurality of elements representing the object as tracking points of the object in the first image frame, and updating, according to an updated disparity map and a current location of the movable platform, locations of the tracking points of the object in a second image frame captured by the imaging device.

Abstract: A method includes obtaining a disparity map based on stereoscopic image frames captured by stereoscopic cameras borne on a movable platform, determining a plurality of continuous regions in the disparity map that each includes a plurality of elements having disparity values within a predefined range, identifying a continuous sub-region including one or more elements having a highest disparity value among the elements within each continuous region as an object, and determining a distance between the object and the movable platform using at least the highest disparity value.

Abstract: A system includes a power sourcing equipment (PSE) unit. The PSE unit includes a plurality of network ports. The PSE unit also includes a PSE board coupled to the plurality of network ports and configured to provide power to a plurality of powered devices (PDs) external to the PSE unit via respective network ports. The PSE unit also includes a sensing circuit configured to determine a power consumption parameter for the PSE board. The PSE unit also includes a controller configured to change a power state for at least one of the plurality of network ports based at least in part on the power consumption parameter.

Abstract: A micro/nanoparticle-reinforced composite solder for low-temperature soldering and a preparation method thereof belong to the manufacturing field of lead-free low-temperature soldering solders. Micro/nanoparticle-reinforced tin-based alloy solder powder is formed by diffusely mixing micro/nano-sized Cu, Ag and Sb particles with a molten metal tin and atomizing the mixture, and then blended with low-melting-point SnBi-based alloy solder powder and a conventional flux to prepare a micro/nanoparticle-reinforced composite solder. In soldering at a temperature below 200° C.

Abstract: A method includes obtaining a disparity map based on stereoscopic image frames captured by stereoscopic cameras borne on a movable platform, determining a plurality of continuous regions in the disparity map that each includes a plurality of elements having disparity values within a predefined range, identifying a continuous sub-region including one or more elements having a highest disparity value among the elements within each continuous region as an object, and determining a distance between the object and the movable platform using at least the highest disparity value.

Abstract: A control method includes receiving status information of the aerial vehicle, obtaining a flight path of the aerial vehicle based on the status information, and displaying a three-dimensional (3D) dynamic icon corresponding to the flight path.

Abstract: Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has a very high degree of isotacticity, and the yield is high.

Abstract: Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has very high degree of isotacticity, and the yield is high.

Abstract: As access control system and method is provided. The access control system in one aspect may comprise a client application operable to provide a user interface for allowing a user to dynamically configure rules and associated parameters for controlling access to an entity; a rules engine proxy operable to receive said rules and associated parameters from the client application, the rules engine proxy further operable to dynamically compile and execute said rules; and a controller coupled to the rules engine proxy operable to receive input and further operable to trigger the rules engine proxy to execute one or more of said rules in response to the received input.

Abstract: As access control system and method is provided.

Abstract: A cell-searching method and device for a mobile terminal in TDD-CDMA system, in which the mobile uses the special power pulse of using the downlink pilot slot (DwPTS) to acquire coarse synchronization before using conventional correlation cell searching to refine the search. Due to the coarse synchronization, the conventional correlation cell search can be limited to a narrow time window. So the cell searching complexity and searching time in the TDD-CDMA system, especially TD-SCDMA decrease greatly.