Abstract: Embodiments of this application disclose a route planning method and apparatus. The method includes obtaining request failure information in response to detecting a route planning request failure event, obtaining a failure event occurrence time, and generating a request failure log based on the request failure information and the failure event occurrence time, and sending the request failure log to a cloud, to cause an application deployed in the cloud to perform signal blind area marking on a road for route planning based on the request failure log. The technical solutions can identify a road in a signal blind area, to provide a planned route with covered communication and a more stable positioning network.

Abstract: A tapping apparatus adapted for tapping a workpiece includes a lower die unit to drive the workpiece to move along a conveying direction, and an upper die unit disposed above and movable upwardly and downwardly relative to the lower die unit. A tapping mechanism is disposed between the lower and upper die units to be driven by the upper die unit for tapping the workpiece so that the workpiece is formed with a tapped hole. A thread checking mechanism is disposed between the lower and upper die units and is spaced apart from the tapping mechanism along the conveying direction. The thread checking mechanism is driven by the upper die unit for checking the tapped hole of the workpiece.

Abstract: A method for online monitoring of temperature in current terminal blocks based on thermal imaging are provided, including: obtaining real-time temperature distribution information of current terminals of a terminal box; using an external communication substation to upload the obtained real-time temperature distribution information to the secondary intelligent operation-and-maintenance control platform; determining whether there is an abnormality in temperature of the current terminals, if there is an abnormality, issuing an alarm message about potential danger for an open circuit of a current secondary circuit. The method provided by the present invention has a self-verification function of measurement data and can suppress the influence of ambient temperature.

Abstract: The present disclosure relates to a method for managing cache data, an apparatus, a storage medium and an electronic device, the method includes: acquiring a remaining available space of a solid-state disk for storing cache data; upon the remaining available space being less than a first space threshold, determining a first target fragment group in the solid-state disk that has the greatest garbage proportion, each fragment group including a first number of fragments, and each fragment corresponding to a second number of contiguous logical address spaces in the solid-state disk; and purging the cache data in the first target fragment of the first target fragment group that has the greatest garbage proportion, with this method, the space utilization rate of the solid-state disk can be improved.

Abstract: A method and apparatus for landing and orienting a production selective landing tool (PSLT) within a well casing. The well casing is provided with one or more indexing casing coupling (ICC). The PSLT is included in a completion string. The PSLT has several landing keys and an orientation key. The PSLT is conveyed through the casing and lands in the ICC. The PSLT has integrated control lines for intelligent completion. The PSLT has lugs coupled to a mandrel and control lines. The lugs, the mandrel and the control lines are shifted relative to the body of the PSLT. The control lines are in a slot of the body. The PSLT is locked in the ICC when the mandrel is shifted. The PSLT can be removed from the ICC via pulling the completion string uphole.

Abstract: Systems and methods are provided for improved point querying of a database. The index values are separated from data and retained in cache memory to allow access without requiring a disk input/output (I/O) operation and thereby having less latency resulting from such disk I/O operations. The index values can be compressed using an algorithm such as Crit-Bit-Trie to allow storage of the index values in limited cache memory space. The index values can be selected for storage according to a least recently used approach when cache memory is insufficient to store all index values to maintain a hit rate for the cached portion and reduce the disk I/O operations.

Abstract: Embodiments of the present disclosure provide systems and methods for implementing self-bias detection based on performance and importance. A disclosed computer implemented method aggregates continuous input data through a K-means clustering algorithm to reduce the number of aggregated sub-group data pairs, enabling a reduced calculation time for computing bias and enhanced performance. The self-bias detection identifies a scale factor and a balance factor of aggregated sub-group data pairs, which indicate the importance of the detected bias.

Abstract: Disclosed are a method and a system for data uploading, which belongs to the technical field of blockchain. The method comprises: receiving a block upload request sent by a slave server of a target node; determining whether block data corresponding to the block upload request has been uploaded to a block data storage system; if the block data corresponding to the block upload request is not uploaded to the block data storage system, acquiring the block data if the block data corresponding to the block upload request is not uploaded to the block data storage system, and uploading the block data to a storage space of the block data storage system; and sending an uploading success instruction to the slave server if the uploading is successful, so as to instruct the slave server to delete the block data stored on a light-weight peer in the target node.

Abstract: A tracker tracking method and system, a photovoltaic device, and a medium are provided. The tracker tracking method comprises: acquiring irradiation data of respective target photovoltaic modules; acquiring initial tracking angles of the respective get photovoltaic modules, adjusting tracking angles of the target photovoltaic modules and calculating total power generation amounts of the target photovoltaic modules corresponding to different adjustment modes for the tracking angles according to the irradiation data and the initial tracking angles; and determining target adjustment modes for the tracking angles of the target photovoltaic modules based on the total power generation amounts of the target photovoltaic modules.

Abstract: The present disclosure provides a composition of artesunate, a process of preparing the same, and a method of treatment.

Abstract: Embodiments of the present disclosure provide systems and methods for implementing self-bias detection based on performance and importance. A disclosed computer implemented method aggregates continuous input data through a K-means clustering algorithm to reduce the number of aggregated sub-group data pairs, enabling a reduced calculation time for computing bias and enhanced performance. The self-bias detection identifies a scale factor and a balance factor of aggregated sub-group data pairs, which indicate the importance of the detected bias.

Abstract: Provided herein are phosphatidylethanolamine (PE)-specific probes and methods of use thereof. In particular, the present invention provides conjugates of PE binding moieties with detectable markers, and methods of use thereof to detect and/or characterize PE within cells.

Abstract: The present disclosure discloses a method for rapidly determining survival condition of spores. The method includes the following steps: S100: performing sterilization treatment on the spore; S200: preparing a spore suspension with the spore subjected to the sterilization treatment; S300: dripping an appropriate amount of the above prepared spore suspension onto a solid medium, wherein 4-MUG is contained in the solid medium; S400: observing the solid medium under an excitation light source after the spore suspension fully infiltrates into the solid medium; and S500: determining the number of viable spores according to the number of the observed fluorescent spots on the solid medium. The method is based on an ?-glucosidase test method and can rapidly determine activity of the spore and judge activity of a single spore.

Abstract: This disclosure provides methods and apparatuses for providing interpretability for multivariate time-series data anomaly detection. The multivariate time-series data anomaly detection is performed, through a multivariate time-series data anomaly detection model, for a multivariate time-series data formed by multiple time-series data. An anomaly detection result indicating at least an anomaly period is obtained from the model. An anomaly period correlation metric of the multiple time-series data in the anomaly period is determined. A trace-back period correlation metric of the multiple time-series data in a trace-back period before the anomaly period is determined. At least one time-series data pair having abnormal correlation in the anomaly period is identified from the multiple time-series data, based on a difference between the anomaly period correlation metric and the trace-back period correlation metric.

Abstract: A computer-implemented method, a system and a computer program product for device failure detection are disclosed. In the method, phase-based predictions may be performed on a plurality of storage devices to determine a plurality of sampling scopes and corresponding sampling ratios. The respective sampling scopes may comprise at least one storage device of the plurality of storage devices. A sampling dataset may be obtained by selecting a group of storage devices from the respective sampling scopes with the corresponding sampling ratios. Device failure may be detected for the group of storage devices based on the sampling dataset.

Abstract: A safety pin locking device for workpiece turnover includes a safety pin, a triangular lock plate, an elastic positioning pin, and a lockset. The safety pin is configured to be inserted into a base and an overturnable workpiece to lock an angle of the overturnable workpiece relative to the base. A first corner end of the triangular lock plate is connected to an axial surface of the safety pin by a fastener, and the triangular lock plate can rotate around the fastener. The elastic positioning pin is mounted at a second corner end of the triangular lock plate and is configured to be inserted into positioning counterbores at two different positions on the axial surface of the safety pin to limit a position of the triangular lock plate. The lockset is mounted at a third corner end of the triangular lock plate.

Abstract: The disclosure provides a modified chitosan, a preparation method thereof, and an additive for a tile adhesive, and belongs to the technical field of building additives. In the disclosure, chitosan, an inorganic base, a dispersant having a hydroxyl group and an etherifying agent are added at one time, avoiding the tedious operation of adding inorganic alkali or etherifying agent multiple times. In addition, the etherification reaction is continuously performed under the conditions of gradual temperature increase and pressure increase.

Abstract: The invention belongs to the field of medicine, and particularly discloses an anti-Helicobacter pylori derivative containing a dihydrostilbene parent nucleus and a preparation method thereof; according to the invention, glycyrrhiza stems and leaves are used as raw materials, subjected to alcohol extraction, and then extracted, separated and identified through a macroporous resin, silica gel column chromatography and a preparative liquid phase to obtain a new natural isopentenyl dihydrostilbene compound, and the new compound has good activity to two kinds of drug-resistant and sensitive Helicobacter pylori, and can be used for preparing an anti-Helicobacter pylori drug.

Abstract: The invention discloses a (9?-H)-pimarane skeleton diterpenoids with anti-colon cancer activity and a derivative thereof, and further discloses a preparation method and application of the compounds above; the invention finds that novel skeleton compounds 1 and 2 have certain inhibition effects on colon cancer cells, wherein the compound 2 has remarkable anti-proliferation effects on two colon cancer cell lines HT-29 and SW620, and the effects are both stronger than those of a positive drug 5-fluorouracil, so that the compound has the potential of being developed into a new anti-colon cancer drug.

Abstract: The present disclosure provides compositions comprising artemisinin-derived trimers and tetramers; methods of preparing these compositions; and methods for their use as medicaments.