Abstract: A head assembly for a dental contra-angle hand-piece and a dental contra-angle hand-piece are provided. The head assembly includes a hand-piece main body, a reversing valve movably connected to the hand-piece main body, and an inner water tube connected to the hand-piece main body, wherein the hand-piece main body is provided with a first flow channel and a second flow channel independent from each other, the first flow channel is configured to be in communication with a liquid outlet of a motor, and the second flow channel is configured to be in communication with an external pipeline; the reversing valve is provided with a confluence channel, the reversing valve is configured to enable, when moving relative to the hand-piece main body, the first flow channel and the second flow channel to alternatively be in communication with the inner water pipe through the confluence channel.

Abstract: Network computing equipment may receive one or more radio parameter measurement reports generated by one or more user equipment. A report may comprise radio parameter values measured by user equipment corresponding to signals transmitted by a radio access network node and time information corresponding to the report. The computing equipment may perform temporal analysis based on time information corresponding to one or more reports and may generate a temporal graph based on the time information. Edges of the temporal graph may correspond to connection activity of user equipment that generated the reports with respect to one or more radio access network nodes. The edges may be ranked using a graph-based model and optimally combined with anomaly scores, determined based on the measured radio parameter values, into combined anomaly scores that may be compared to a criterion to determine that a radio access network node is a fake base station.

Abstract: A distributed ledger for vehicle transactions is provided. Also provided is a method of validating vehicle transactions, a method of obtaining a consensus on vehicle transactions, a method of entering data into a distributed ledger and a method of logging vehicle transactions. For each transaction of vehicle transactions, an agreement on a timestamp of the transaction is obtained to form a set of agreed transactions. For the ordered group of the agreed transactions, a consensus on a validity of the group of agreed transactions is obtained. The methods and systems of the present disclosure are specifically designed to address the consensus problem in the context of V2X but may also serve to reach consensus in other contexts. Furthermore, it enables reaching consensus with low latency and high throughput, and dynamic membership changes. It also requires limited (less) memory use to store consensus results.

Abstract: A legitimate radio access network node may determine fake base station barring criteria that may be transmitted to a user equipment in a fake base station barring configuration. The user equipment may analyze information or signal characteristics corresponding to a signal associated with another node with respect to criteria contained in the fake base station barring configuration. The barring criteria may comprise a signal strength threshold or a timing advance threshold. If the analyzed information or signal characteristics satisfy barring criteria contained in the barring configuration, the user equipment may determine that the other node is a fake base station and may avoid selecting, or accessing, the other node. The user equipment may flush radio resource control configuration information corresponding to the fake base station. The user equipment may select or access a next-best node based on the barring criteria being satisfied with respect to the determined fake based station.

Abstract: The invention provides novel glucocorticosteroids, glucocorticosteroid-linkers and antibody drug conjugates (ADC's) comprising an antibody or antibody fragment which binds to an antigen expressed on immune cells, optionally an antigen expressed on human immune cells. In some instances the ADCs comprise an anti-human VISTA (V-region Immunoglobulin-containing Suppressor of T cell Activation (1)) antibody or anti-VISTA antigen-binding antibody fragment which binds to VISTA expressing cells at physiologic pH having a short serum half-life (?24-72 or 24-48 or 12-24 hours or less in a human VISTA knock-in rodent or ((?1-3.5 days or less in a human or non-human primate). In some instances these ADCs have a rapid onset of action and are potent for prolonged duration as they are very effectively internalized by immune cells in large amounts where they are cleaved releasing large amounts of active steroid payload.

Abstract: A hydrogel composition, a hydrogel biomedical material, a method for facilitating regeneration of a bone and a manufacturing method of a hydrogel composition are provided. The hydrogel composition includes a first deionized water, a gel powder, a transglutaminase mixture and a hyaluronic acid powder. The gel powder includes gelatin and alginic acid. The first deionized water, the gel powder, the transglutaminase mixture and the hyaluronic acid powder are evenly mixed. Based on the hydrogel composition being 100 wt %, the first deionized water is 95 wt % to 98.46 wt %, the gel powder is 1 wt % to 3 wt %, the transglutaminase mixture is 0.04 wt % to 0.15 wt %, and the hyaluronic acid powder is 0.5 wt % to 1.5 wt %.

Abstract: A radio access network node and a user equipment may be configured with a private key and a complementary public key, respectively, to be used to determine whether radio resource control signal connection establishment messages received at the user equipment are received from a legitimate node or from a false base station. The user equipment may request from a node that broadcast a connection establishment message an on demand digital signature based on the connection establishment message. In response to the request, the node may transmit, via an on demand system information message, an on demand digital signature generated based on the connection establishment message and the private key. The user equipment may determine a local digital signature based on the connection establishment message and the public key. The user equipment may perform a connection establishment action based on whether the local digital signature matches the on demand digital signature.

Abstract: A method of auto-detection of WLAN packets includes selecting a first Golay sequence from a first pair of Golay complementary sequences associated with first packet type, each Golay sequence of the first pair of Golay complementary sequences being zero correlation zone (ZCZ) sequences with each Golay sequence of a second pair of Golay complementary sequences associated with a second packet type, and transmitting a wireless packet carrying a short training field (STF) that includes one or more instances of the first Golay sequence.

Abstract: The present disclosure provides for methods, systems and apparatus related to WLAN enhanced channel map advertisements. An aspect of the disclosure provides for a method for discovering a network. The method includes sending a discovery request to an access point for discovering a network, the discovery request requesting for: available channels of access points within a radio range of the device, one or more access network operators for the available channels, and one or more service providers for the available channels. The method further includes receiving from the access point a response message including one or more lists indicative of: the available channels, the one or more access network operators, and the one or more service providers. In some embodiments, the response message is based on one of: internal data of the access point, and databases indicative access network operators and service providers.

Abstract: A method, apparatus and system for transmitting control information in a header of a physical protocol data unit (PPDU), such as an IEEE 802.11 compliant PPDU. Embodiments include indicating control features in an EDMG PPDU for Wireless LAN communications. The method and system may include overloading at least one bit of a Scrambler Initialization Field in the PPDU header (e.g. the PHY header) to convey control information, as well as to be used to initialize the scrambler shift register. The same header bits are thus used for both purposes. Examples of control information include a primary channel, channel width or MIMO configuration to be used in further communication.

Abstract: A method for manufacturing a metal shell for casing of electronic product comprises stamping, squeezing and milling a sheet metal at a first area and a second area to form hinge side walls. The sheet metal on the periphery is stamped, squeezed, and milled to form side walls. Insert molding is performed at inner surface of the sheet metal to form an internal molded plastic part and a fine machining of the sheet metal is carried out. The metal shell is integrally formed from a single solid sheet, the manufacturing process is simple and economical as CNC processes are reduced.

Abstract: A method of non-interactive zero-knowledge crowd verifiable digital contact tracing, system and devices that provides improved accuracy and/or privacy by improving the validity of digital contact tracing sources. Private information associated with a respective user intended for a receiver is uploaded to a data server. The receiver is notified that the private information has been uploaded to the data server. A proof of the private information is generated using a proof function of a non-interactive zero-knowledge cryptographic protocol and added to a contact tracing blockchain for the respective user. A second blockchain transaction is added in response to verification of the proof by a verifier network using a verification function of the non-interactive zero-knowledge cryptographic protocol and the receiver is be notified.

Abstract: A method of quantum key distribution making use of 2-qubit entanglement, by which one entangled qubit is sent from an operator O to Alice and the other entangled qubit is sent from operator O to Bob, making for key-sharing among three parties (multi-user quantum key distribution, i.e. MU QKD). Alice and Bob each measures a respective sequence of qubits randomly along either one of two states, records the measurements in a respective list, and encodes the bits in an encoded list. The encoded lists are sent to operator O for entanglement to be verified with the CHSH inequality. Bob's verified list is sent to Alice and vice-versa, allowing Alice and Bob to further verify correlation. Non-entangled bits are rejected until Alice and Bob have a similar key, being a reconciled quantum-based key as sought.

Abstract: Methods of distributing a quantum-based cryptographic key to multiple network nodes. A multi-user quantum key distribution from one node to two further nodes can be extended to a binary tree structure where any further node can participate in quantum key distribution with its two child nodes. A key generated in a 3-node subgroup can be stitched with a key from of a parent 3-node subgroup, or a child 3-node group, and key confirmations can be provided through authenticated classical channels. Classical channels can also be used to communicate and relay membership updates, allowing a key operator at a binary tree's root node to update keys accordingly.

Abstract: A method, apparatus and system for implementing zero-knowledge proofs is provided. Partitioned garbled circuits are used to achieve a joint zero-knowledge proof system with full syntax verification. A polylithic syntax is used for handling complex semantics involving more than one statement to be proved and verified. Multiple verifiers can participate in a coordinated manner to perform the verification. Different verifiers can perform different parts of the verification.

Abstract: Systems and methods for tracking the privacy policy of an electronic device in a network having a privacy policy server and an authentication server are provided. In one aspect a privacy policy server receives a connection request from the electronic device, queries an authentication server for the device's privacy policy acceptance state. If the device had not accepted the network's privacy policy, the privacy policy server sends a URL to the device so the device may accept or reject the policy. The authentication server locates a network session identifier representing the device's connection with the network and response to the policy server indicating the device's current privacy policy acceptance state if applicable. Advantageously, a network session identifier can track a device's privacy policy acceptance state when the device reconnects with the network. The systems and methods are applicable in wireless networks, such as 802.11.

Abstract: A method, apparatus and system for transmitting control information in a header of a physical protocol data unit (PPDU), such as an IEEE 802.11 compliant PPDU. Embodiments include indicating control features in an EDMG PPDU for Wireless LAN communications. The method and system may include overloading at least one bit of a Scrambler Initialization Field in the PPDU header (e.g. the PHY header) to convey control information, as well as to be used to initialize the scrambler shift register. The same header bits are thus used for both purposes. Examples of control information include a primary channel, channel width or MIMO configuration to be used in further communication.

Abstract: Provided is a bioreactor apparatus including: a liquid storage chamber for storing a culture medium; a pump for providing pressure to drive the flow of the culture medium; a plurality of culture chambers providing an accommodating space to accommodate the culture medium and a cell to be cultured; and a pipeline connecting the liquid storage chamber, the pump, and the culture chamber to form a closed loop. Also provided is a bioreactor system including the bioreactor apparatus of the present disclosure, the culture medium, and a cell. Further provided is a method for culturing a cell or an organoid by the bioreactor apparatus of the present disclosure. The bioreactor apparatus, bioreactor system, and method of the present disclosure can form a biomimetic circulatory system, which is beneficial for simulating and evaluating the complex microenvironment and physiological mechanism in the living body.

Abstract: The present disclosure provides an array substrate and a display panel including the same. The array substrate includes a plurality of pixel units. Each of the pixel units includes a main pixel electrode, a sub-pixel electrode, a first thin film transistor (TFT) electrically connected to the sub-pixel electrode, a second TFT electrically connected to the first TFT, and a third TFT electrically connected to the main pixel electrode. The first TFT includes a first channel and a first semiconductor layer. The first channel includes two or more subchannels. The first semiconductor layer includes two or more semiconductor sublayers. Each of the semiconductor sublayers is disposed in a corresponding subchannel.

Abstract: A method of non-interactive zero-knowledge crowd verifiable digital contact tracing, system and devices that provides improved accuracy and/or privacy by improving the validity of digital contact tracing sources. Private information associated with a respective user intended for a receiver is uploaded to a data server. The receiver is notified that the private information has been uploaded to the data server. A proof of the private information is generated using a proof function of a non-interactive zero-knowledge cryptographic protocol and added to a contact tracing blockchain for the respective user. A second blockchain transaction is added in response to verification of the proof by a verifier network using a verification function of the non-interactive zero-knowledge cryptographic protocol and the receiver is be notified.