Abstract: This disclosure relates to systems and methods for identifying fraudulent email addresses associated with an electronic payment service. In some implementations, a computing device receives an email with a prefix having a number of characters and characterized by a prefix length indicative of the number of characters in the prefix. The computing device identifies each of a number of bigrams is identified within the prefix, and determines a row and column distance for each bigram between two consecutive characters of the bigram as positioned on a keyboard. The computing device calculates a Euclidean distance between the two consecutive characters of the bigram based on the row and column distances, and determines a normalized distance based on the prefix length and an average of the Euclidean distances calculated for the number of bigrams in the prefix. The normalized distance is compared with a value to classify the email as suspicious or as not suspicious.

Abstract: Methods, systems, and apparatus for enhancing cryptographic hash digests. In one aspect, a method includes obtaining a hash digest that represents a data input. Symbols in the hash digest are divided into a number of groups of equal size. Each group is mapped to a respective point on a Bloch sphere. A quantum system comprising multiple qubits is initialized by initializing each qubit of the multiple qubits in a quantum state specified by a respective point on the Bloch sphere. An expectation value of the initialized quantum system is computed to obtain a quantum fingerprint for the data input.

Abstract: Methods, systems, and apparatus for generating a cryptographic hash digest. In one aspect, a method includes obtaining data representing a quantum circuit. An initial quantum state vector is generated, where the initial quantum state vector includes an input quantum state vector for the quantum circuit. The initial quantum state vector is used to generate one or more evolved quantum state vectors, where each evolved quantum state vector is generated by applying a respective portion of the quantum circuit to the initial quantum state vector. Logical operations are iteratively applied to floating point binary representations of the initial and evolved quantum state vectors to obtain a binary string, and a hash function is applied to the binary string to obtain a cryptographic hash digest of the quantum circuit.

Abstract: A system for monitoring conveyor belts is disclosed. The system includes a generator array, a sensor array and circuitry. The generator array is configured to apply a magnetic field to a conveyor belt. The sensor array is configured to measure a plurality of magnetic responses. The circuitry is configured to determine the source or cause of the observed steel cord damage based on the measured plurality of magnetic responses.

Abstract: A printed magnetic rip insert and system for monitoring conveyor belts using printed rip inserts is disclosed. The system includes: a plurality of printed rip insert elements on a substrate of a conveyor belt; a field generator for generating a magnetic field proximate the printed rip insert elements; and a detector for detecting an image of a magnetic field produced by the plurality of printed rip inserts.

Abstract: Methods to activate or enhance phosphorylation of focal adhesion kinase (FAK) are provided herein. Methods to treat epithelial disorders in mammals. namely diseases of the gut. comprising the administration of one or more small molecules having FAK activation properties are also provided.

Abstract: The disclosure below is directed to optical/photonic devices and systems configured to control polarization state of light for selective privacy protection in optical imaging. In particular, the various embodiments disclosed below provide an application of polarization manipulation techniques with multiple optical polarization filters to enable partial or full privacy while maintaining functioning of image-based spatial mapping and localization algorithms used in video devices such as virtual reality (VR), augmented reality (AR), and robot/drone cameras. In the disclosed example approaches, the various polarization filters are configured to allow no or negligibly small amount of light from the privacy protected regions of a scene into the cameras in a privacy mode and to reject 100% of all light and enable full privacy in a block mode. The disclosed approaches also dynamically account for orientation changes during operation of the camera devices such that privacy is dynamically protected in real-time.

Abstract: A plurality of graph snapshots for a plurality of consecutive periodic time samples maps between connected components in consecutive graph snapshots and describes at least one feature of each connected component. A recursively-built tree tracks an evolution of one of the connected components through the plurality of graph snapshots, the tree including a root node representing the connected component at a final one of the consecutive periodic time samples and a plurality of leaf nodes branching from the root node. A plurality of paths is extracted from the tree by traversing the tree from the root node to respective ones of the plurality of leaf nodes. Each path contains data describing an evolution of a respective one of the connected components through time as indicated by evolution of the at least one feature of the respective one of the connected components.

Abstract: The invention relates to a removable mechanical tensioning system, tool, and a method of stretching a bolt or stud axially, the bolt being located in and attachable to an object via a nut. The system in accordance with the invention comprises an anti-rotation member; and a tensioner device. The anti-rotation member is attachable to both the tensioner device and bolt. The tensioner device is operatively attachable to the bolt via the anti-rotation member. The tensioner device comprises or is operatively coupled to a nut engaging assembly configured to automatically engage and tighten the nut, at a lower torque than the applied tool torque. Displacement of a part of the tensioner device with a holding force applied to the anti-rotation member causes axial stretch of the elongate member and actuation of the nut engaging assembly to bring about displacement of the nut in the transverse direction relative to the stretched elongate member.

Abstract: Methods to activate or enhance phosphorylation of focal adhesion kinase (FAK) are provided herein. Methods to treat epithelial disorders in mammals, namely diseases of the gut, comprising the administration of one or more small molecules having FAK activation properties are also provided.

Abstract: A device for discharging an electrostatic chuck located within a vacuum chamber, the device includes a plasma distribution unit that is configured to receive plasma from an external plasma source that is located outside the vacuum chamber, and perform a distribution of the plasma within the vacuum chamber that discharges the electrostatic chuck. The device also includes a controller for controlling the distribution of the plasma; wherein the distribution of the plasma occurs during a plasma distribution period that is shorter than a duration of a plasma based cleaning process of the electrostatic chuck.

Abstract: A printed magnetic rip insert and system for monitoring conveyor belts using printed rip inserts is disclosed. The system includes: a plurality of printed rip insert elements on a substrate of a conveyor belt; a field generator for generating a magnetic field proximate the printed rip insert elements; and a detector for detecting an image of a magnetic field produced by the plurality of printed rip inserts.

Abstract: A system for monitoring conveyor belts is disclosed. The system includes a generator array, a sensor array and circuitry. The generator array is configured to apply a magnetic field to a plurality of belt subsegments of a segment of a conveyor belt. The sensor array is configured to measure a plurality of magnetic responses for the plurality of belt subsegments. The circuitry is configured to determine whether at least a portion of the segment requires replacement based on the measured plurality of magnetic responses.

Abstract: A communication transmitter retransmits a Medium Access Control (MAC) Protocol Data unit (MPDU) to a communication receiver over a communication channel using a Hybrid Automatic Repeat reQuest (HARQ) retransmission scheme. The MPDU includes a plurality of information bits. The communication transmitter includes a processor configured to determine the MPDU to be retransmitted based on a Block ACK frame received from the communication receiver, the Block ACK frame indicating previously correctly decoded MPDUs at the communication receiver, and to generate a bit sequence to be transmitted to the communication receiver, wherein the bit sequence comprises the plurality of information bits. The communication transmitter further comprises a communication interface configured to transmit the bit sequence to the communication receiver for retransmitting the MPDU to the communication receiver.

Abstract: An insert for a drill bit includes a base portion. In addition, the insert includes a formation engaging portion extending from the base portion. The formation engaging portion has a longitudinal axis and includes a first end, a second end opposite the first end, a first lateral side extending from the first end to the second end, and a second lateral side extending from the first end to the second end, and an elongate crown extending longitudinally from the first end to the second end and laterally from the first lateral side to the second lateral side. The first lateral side comprises a first curved surface having a first radius of curvature in top view of the insert and the second lateral side includes a second curved surface having a second radius of curvature in top view of the insert. The first radius of curvature of the first curved surface is different than the second radius of curvature of the second curved surface.

Abstract: A system, method, and apparatus for concealing searches for information stored on public networks, includes splitting of a search query, transforming the query into one or more related queries, and searching each of related queries separately.

Abstract: An energy-dispersive x-ray spectroscopy (EDX) sensing unit, the EDX sensing unit include a protective unit and an x-ray sensor that includes one or more sensing regions. The protective unit is configured to (i) introduce a change in one or more properties of electrons emitted from a sample, thereby preventing the electrons emitted from the sample from reaching the one or more sensing regions, the electrons are emitted from the sample due to an illuminating of the sample by a primary electron beam, and (ii) increase a safety of operation of the EDX sensing unit. The x-ray sensor is configured to (i) receive, by the one or more sensing regions, x-ray photons emitted from the sample due to the illuminating of the sample, and (ii) generate detection signals indicative of the x-ray photons.

Abstract: Methods to activate or enhance phosphorylation of focal adhesion kinase (FAK) are provided herein. Methods to treat epithelial disorders in mammals, namely diseases of the gut, comprising the administration of one or more small molecules having FAK activation properties are also provided.

Abstract: A binder for use in leaching a heap of a low-permeability ore containing at least one of the following: copper ore, copper/cobalt ore, nickel laterite ore and uranium ore, wherein the binder comprises an acid-proof cement formed by modifying ordinary Portland cement (OPC) with a supplementary cementitious material (SCM).

Abstract: There is herein provided a device (200) for insertion into a vagina. The device comprises a cervical ring (202) configured to surround the cervix, a positioning portion (204) configured to abut against a securing position along an interior wall of the vagina and an elastically resilient connecting portion (206). The elastically resilient connecting portion connects the cervical ring and the positioning portion and the elastically resilient connecting portion is configured such that, when the device is positioned inside the vagina, the positioning portion is biased against the securing position.