Abstract: An example operation may include one or more of seeking consensus among users of a source tree to approve execution of a blocked command to a source control system, creating a child ledger for a user issuing the blocked command and initiating a blockchain transaction to link the child ledger to a master ledger, merging the child ledger into the master ledger when consensus is reached, and executing the blocked command.

Abstract: This application provides a data transmission method and a apparatus. The method includes: when determining that a first data stream satisfies a transmission optimization enabling condition, a first transmitting end TE1 sends a transmission optimization enabling notification to a first receiving end RE1, where the transmission optimization enabling notification is used to indicate the RE1 to skip sending, to the TE1, an acknowledgment packet used to acknowledge that a data packet of the first data stream is already received by the RE2. The TE1 receives a data packet Data2 in a second protocol format from the TE2. The TE1 sends a data packet Data1 in a first protocol format to the RE1. The TE1 receives an acknowledgment frame Ack1 in the first protocol format from the RE1. The TE1 constructs an acknowledgment packet Ack2 in the second protocol format based on the Ack1, and sends it to the TE2.

Abstract: The present disclosure belongs to the field of chemical synthesis, and in particular relates to an ammonium carboxylate compound, a crystalline form and an amorphous form, and a preparation method thereof. The present disclosure prepares the compound and the crystalline form I and its single crystal, amorphous form and crystalline form II thereof. The compound, the crystalline forms, the single crystal and the amorphous form can stably exist and exhibit good solid forms, suitable for medicine-making. Furthermore, these products possess high purity and less single impurity. Moreover, the preparation methods of the present disclosure are easy to implement due to the simple processes with mild reaction conditions, and could produce products of high yield and high purity without complex purification steps. Furthermore, the preparation methods may facilitate safety, environmental protection, and industrial production.

Abstract: Carbon dioxide-reversibly-protected chain extension-crosslinking agents and a preparation method and use thereof are disclosed, The carbon dioxide-reversibly-protected chain extension-crosslinking agents have chemical structures represented by Formula I, Formula II, Formula III or Formula IV, wherein, n, m and p are integers, R is either OCH2CH(CH3) or OCH2CH2, 1?n?20, 1?m?10, and 1?p?10.

Abstract: The present disclosure relates to an image processing method and apparatus based on a super network, and a computer storage medium. The method can include that a pretrained backbone network is merged with a rear end of a target detection network to obtain a merged super network, the merged super network is trained, Neural Architecture Search (NAS) is performed based on the trained super network to obtain a target detection neural architecture, and an image to be processed is processed by using the target detection neural architecture to obtain an image processing result.

Abstract: A power MOS device with low gate charge and a method for manufacturing the same. The device includes an M-shaped gate structure, which reduces the overlapped area between control gate electrode and split gate electrode. A low-k material is introduced to reduce dielectric constant of the isolation medium material. The combination of the M-shaped gate structure and low-k material can reduce parasitic capacitance Cgs of the device, thereby increasing switching speed and reducing switching losses.

Abstract: An optimized extremely-large magnetic field measuring method includes: placing four orthogonally configured tunneling magnetoresistive resistors into an externally applied magnetic field, acquiring the resistances of the tunneling magnetoresistive resistors; calculating the angle between a magnetization direction of a free layer of each tunneling magnetoresistive resistor and that of a reference layer on the basis of the resistances of the four resistors; calculating magnetic field intensity H1 and direction ?1 of the externally applied magnetic field calculating magnetic field intensity H2 and direction ?2 of the externally applied magnetic field; and determining final magnetic field intensity H0 of the externally applied magnetic field on the basis of magnetic field intensity H1 and of magnetic field intensity H2; determining final direction ? of the externally applied magnetic field on the basis of direction ?2 and of direction ?1; and optimizing on the basis of direction ? and of magnetic field intensity

Abstract: Training data identifying a plurality of pairs is received. Each pair identifies one or more separate code snippets known to resolve a respective issue of a plurality of issues. For each pair of the plurality of pairs, a respective issue representation of core content of the respective issue and a linear expression of the one or more separate code snippets in a respective code representation is constructed and a model to correlate the respective code representation as resolving the respective issue representation is trained. The model is queried with a new issue and a selected one of the one or more separate code snippets. The model returns a classification indicating whether the selected one of the one or more separate code snippets is likely to resolve the new issue.

Abstract: A near-eye display (NED) using a pupil expander to expand an eyebox of the NED may suffer from local variations of throughput and color reproduction introduced by the pupil expander of the display. To offset or compensate these variations, the pupil expander, e.g. a pupil-replicating waveguide, may be characterized at a plurality of non-uniformly spaced grid of test points, with the test points disposed more densely at areas of high spatial variation of the throughput or color shift introduced by the pupil expander. The throughput or color shift may be integrated over at least a portion of the field of view of the NED. To determine the areas of high spatial variation, an initial test may be performed at uniformly spaced test grid locations.

Abstract: A method and an apparatus for processing web content, a device, and a computer storage medium are provided. A long-term feature group and a short-term feature group are determined from historical browsing data of a user according to generation time points of elements in the historical browsing data. A long-term encoding vector corresponding to the long-term feature group is determined according to similarities between elements in the long-term feature group, a user embedding vector corresponding to the short-term feature group is determined according to the long-term encoding vector and similarities between elements in the short-term feature group, and at least one web content is determined as a recommendation candidate and provided to the user.

Abstract: Example communication methods and apparatus are described. One example communication method includes that user equipment (UE) sends an N1 message to a security anchor function (SEAF), where the N1 message carries a Diffie-Hellman (DH) public parameter or a DH public parameter index, the N1 message further carries an encrypted identifier of the UE, and the encrypted identifier is obtained by encrypting a permanent identifier of the UE and a first DH public key. The UE receives an authentication request that carries a random number and that is sent by the SEAF. The UE sends, to the SEAF, an authentication response used to respond to the authentication request, where the authentication response carries an authentication result calculated based on a root key and the random number.

Abstract: An example operation may include one or more of intercepting a command from a user to modify a source tree in a source control system, creating a child ledger associated with a master ledger when the intercepted command is destructive, seeking consensus among users of the source tree to approve execution of the intercepted command, merging the child ledger into the master ledger with a transaction describing the intercepted command, a commit tree history, and status of the consensus, and a tree hash, and merging execution results of the intercepted command into a history of the source tree.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a computer-implemented method for displaying a heat map are provided. One of the methods includes: receiving heat data from a server, wherein the heat data comprises a color value associated with each of a plurality of regions and one or more geographic locations respectively corresponding to one or more boundary points of each of one or more heat regions among the plurality of regions; generating a first heat map comprising a plurality of pixels; obtaining a second heat map by adjusting the color value of each pixel in the first heat map; and providing the second heat map for display, wherein the second heat is superimposed on a digital map. This method addresses the issue of conventional techniques that service request information may be misrepresented due to abrupt changes in color values across neighboring heat regions.

Abstract: Software for immutably storing computational determinations using distributed ledgers. The software performs the following operations: (i) receiving an indication that a first computational model is ready to be deployed; (ii) storing a copy of the first computational model in a first distributed ledger; (iii) computing a hash of the first computational model using a cryptographic hash function; (iv) receiving an indication that a second computational model has been used to produce a first computational determination; (vi) receiving a hash of the second computational model; and (vii) in response to determining that the hash of the second computational model matches the hash of the first computational model, storing a record of the first computational determination in a second distributed ledger, wherein the record of the first computational determination identifies the second computational model as being the first computational model and includes the hash of the first computational model.

Abstract: Techniques disclosed herein relate generally to surface-relief structures. In one embodiment, a surface-relief grating includes a plurality of grating ridges. The plurality of grating ridges includes a first set of grating ridges characterized by a first refractive index, and a second set of grating ridges interleaved with the first set of grating ridges and characterized by a second refractive index different from the first refractive index. The plurality of grating ridges is imprinted in a polymer layer by a nanoimprint lithography process and is exposed to a light pattern to form the first set of grating ridges and the second set of grating ridges that have different refractive indices.

Abstract: A metal wiring method for reducing gate resistance of a narrow control gate structure, wherein the gate structure is etched with first gate electrodes and second gate electrodes at regular intervals and kept with complete gate electrodes at regular intervals, thereby constituting a structure in which the first and second gate electrodes and the complete gate electrodes are spaced apart. A first contact hole is etched on the complete gate electrode to draw out metal as a first metal layer. A second contact hole is etched on a source region and a split gate to draw out metal as a second metal layer. These two metal layers are separated by a dielectric layer. A multi-point contact of the first layer of metal with the gate electrode in a Y direction reduces the gate resistance caused by an excessively long path in the Y direction of a control gate electrode.

Abstract: A method and an apparatus for determining a security protection mode. In the method, a terminal device may determine a security protection mode of a second communications mode based on security protection information in a first communications mode. In this way, when switching from the first communications mode to the second communications mode, the terminal device may directly use the security protection mode corresponding to the second communications mode to protect transmitted data, so as to ensure data security of the terminal device after communications mode switching is performed.

Abstract: A departure sequencing system models airport operations and provides suggested gate pushback times for aircraft. In various embodiments, a departure sequencing system includes an airport state analyzer, a taxi-out predictor, and a pushback optimizer. The departure sequencing system may utilize stochastic models, and resolve aircraft conflicts using a business rules engine. Via use of the departure sequencing system, taxi times may be reduced, taxi fuel burn may be reduced, and airport throughput may be increased.

Abstract: A synchronous soft-start networking control strategy for parallel auxiliary converters of EMU, that is, when a first auxiliary converter is connected to the bus, non-first auxiliary converters complete the networking during an amplitude soft-start process of the first auxiliary converter. Specific solution is: fast networking logic, bus fast-tracking logic and PQ droop networking control strategy. Wherein, the fast networking logic comprises recognizing the first auxiliary converter and the non-first auxiliary converter; the bus fast-tracking logic comprises tracking phase, frequency and amplitude; the PQ droop networking control strategy comprises introducing a correction coefficient K. The synchronous soft-start networking control strategy for the parallel auxiliary converters of EMU can realize quickly and reliably automatic networking in an emergency traction mode of EMU, and significantly shorten networking time in a network normal mode of EMU.

Abstract: An FPGA upgrade method is provided, including: delivering, by a host, an upgrade instruction to an FPGA; uninstalling a PCIe driver corresponding to the FPGA to let a status of the PCIe link be changed to link down; continuously monitoring, in a first expiration time, whether the status of the PCIe link is changed to link up; and if yes, reloading the PCIe driver. The method further includes: after the FPGA receives the upgrade instruction, continuously monitoring, in a second expiration time, whether the status of the PCIe link is changed to link down, if yes, loading the configuration data from the FPGA configuration memory for upgrade; and after upgrade is completed, negotiating, by the FPGA, with the host to restore the status of the PCIe link to link up that is used for reloading the PCIe driver upon detection by the host.