Abstract: Vinyl ester/ethylene copolymer aqueous dispersions containing an anionic polyacrylamide, at least one polyvinyl alcohol, and optionally a non-ionic surfactant, are useful in cementitious compositions as polymer additives.

Abstract: An ultrasonic motor-based regulated variable-damping vibration isolator, includes a base, a magnetorheological damper, and an adapter plate. The magnetorheological damper is mainly used to support and deplete the energy of vibration; the magnetorheological damper includes an upper cavity, a lower cavity, a connecting ring, a permanent magnet, orifices, a magnetic permeable ring, an ultrasonic motor and the like; a magnetorheological fluid is stored in the upper and lower cavities defined by bellows. The magnetorheological damper uses the ultrasonic motor to drive the permanent magnet to rotate to adjust the overlap ratio of the permanent magnet and the orifices, that is, to adjust the number of the orifices entering the magnetic field of the permanent magnet, so as to change the damping intensity of the damper. After rotating in place, the ultrasonic motor can be powered off and self-locked.

Abstract: Vinyl ester/ethylene copolymer aqueous dispersions containing an anionic polyacrylamide, at least one polyvinyl alcohol, and optionally a non-ionic surfactant, are useful in cementitious compositions as polymer additives.

Abstract: Disclosed are a method and an apparatus for setting an access privilege. The method includes: acquiring Internet Protocol (IP) addresses having a access frequency to a target application greater than or equal to a frequency threshold, selecting IP addresses accessing more than one applications per time unit from the IP addresses as to-be-processed IP addresses to generate a to-be-processed IP address set; acquiring access information, related to an access of a target application, of the to-be-processed IP address; acquiring a plurality of target IP addresses in the to-be-processed IP address set based on the access information, determining a probability of access through a gateway by a terminal pointed by each target IP address; and selecting a preset proportion or a preset number of target IP addresses from the plurality of target IP addresses in a descending order of the probability to set the access privilege.

Abstract: A method comprising: A. forming a consortium blockchain network using domain network nodes and selecting committee members from top-level domain nodes; B. the committee member who received most votes packs the genesis block and generates a random number; C. the housekeeper having the same number as the random number packs the current block and generates a random number for selecting a next housekeeper to pack the next block, each block is approved by more than half of the committee members; D. during the duty cycle, each housekeeper takes turns packing blocks and generating random numbers and the process is repeated. If a block is not approved, the housekeeper with the next number is requested to repack the block; and E. the last random number generated by a housekeeper before the duty cycle ends is used to select the housekeeper to pack the first block of the next duty cycle.

Abstract: The present application discloses a method and an apparatus for setting an access privilege, a server and a storage medium, comprising: acquiring Internet Protocol (IP) addresses having a access frequency to a target application greater than or equal to a frequency threshold, selecting IP addresses accessing a plurality of applications per time unit from the IP addresses as to-be-processed IP addresses to generate a to-be-processed IP address set; acquiring access information, related to an access of a target application, of the to-be-processed IP address; acquiring a plurality of target IP addresses in the to-be-processed IP address set based on the access information, determining a probability of access through a gateway by a terminal pointed by each target IP address; selecting a preset proportion or a preset number of target IP addresses from the plurality of target IP addresses in a descending order of the probability to set the access privilege.

Abstract: A glue thickness inspection system automates a thickness measurement functionality for determining the thickness of both non-transparent and transparent materials including, but not limited to, glue, gel, solder and epoxy. The glue thickness inspection system includes a laser detector, a movable platform for positioning a unit under test, and a controller for controlling movement of the platform, angle of the laser detector, and calculation of the transparent material thickness. The laser detector includes a laser for emitting a laser light onto the unit under test and a sensor for receiving corresponding reflected light. The sensed data is used by the controller to determine the transparent material thickness.