Abstract: A distributed fiber-optic acoustic sensing system and a signal processing method. The distributed fiber-optic acoustic sensing system is based on a high spatial resolution distributed fiber-optic acoustic sensor. The interval between adjacent sensing units is centimeter or millimeter level. Through specific digital signal processing, signal enhancement can be realized, noise in the system and environment are suppressed, at the same time, problems such as interference fading is solved, and the sensor signal-to-noise ratio of subunits can be increased by two to three orders of magnitude. Each subunit can serve as an independent high-sensitivity sensor for sensing. The multiple subunits can form one or more new sensor arrays. The azimuth estimation and spatial orientation of signal sources can be realized by the array signal processing method.

Abstract: Methods and systems are provided for improving user authentication and access control by a network file system service in a multi-tenant public cloud environment by receiving a request for a connection to a file system from a file system client (client), sending an identification request for identification authentication of the client to a control system, receiving a response from the control system, establishing the connection to the file system upon determining that the connection to the file system is allowed based on cloud tenant information associated with the client, receiving an attempt to access the file system from the client by a sub-user, authenticating the sub-user based on the cloud tenant information, issuing a security token including a globally unique sub-user identifier of the sub-user, and using the security token to determine access rights of the sub-user to the file system for a subsequent request.

Abstract: Disclosed is a method for automatically generating interactive test cases. The method comprises: after a UI of an application program is displayed, traversing all views in a view tree corresponding to the UI of the application program, and recording a path, in the view tree, of each view therein that can be clicked on, so as to obtain a set of path information, in the view tree, of all the views that can be clicked on in the UI; and respectively generating a corresponding test case for each piece of path information in the set: in the test case, according to path information, in the view tree, of a view under test, finding the view in the UI interface of the application program, and triggering a click event therefore, that is, completing a click interaction test on the view. In the present invention, there is no strict requirements for the type and the running environment of an application program.

Abstract: Disclosed are compounds of Formula I, methods of using the compounds for inhibiting KRAS activity and pharmaceutical compositions comprising such compounds. The compounds are useful in treating, preventing or ameliorating diseases or disorders associated with KRAS activity such as cancer.

Abstract: A lighting apparatus includes a light source, a base plate, a light passing plate and a control module. The base plate has a lateral wall, a bottom plate and a top rim. The lateral wall and the bottom plate form a concave container. The light source is disposed on the bottom plate. A bottom edge of the lateral wall is connected to the bottom plate. A top edge of the lateral wall is connected to the top rim. The light passing plate is attached to the top edge of the lateral wall. a control module. The control module has a sensor and a control circuit. The sensor and the control circuit are placed on two sides of the top rim. The control circuit is connected to the sensor via a through hole of the top rim.

Abstract: A system for storing multiple petabytes of raw log data from cloud-based source data buckets into internal partitioned data storage in a data lake is provided. The system is configured to: deploy a log partitioner cluster comprising a plurality of log partitioner service instances for storing the raw log data in a partitioned manner; associate one or more of the source data buckets to each of a plurality of deployed log partitioner service instances by providing associated configuration metadata from a configuration service; fetch, via the log partitioner cluster, raw log data from associated source data buckets based on the associated configuration metadata, wherein the associated configuration metadata provides instructions for use by a log partitioner service instance to onboard raw log data; and place fetched raw log data, via the log partitioner cluster, in the internal partitioned log storage in accordance with the associated configuration metadata.

Abstract: A carrying mobile robot includes a frame, a suspension system disposed at the bottom of the frame, and a lifting mechanism disposed on the frame. The suspension system includes two suspension mechanisms disposed on the left and right sides, each of which includes a supporting beam, a driving wheel, a connecting member and a first driven wheel. The first driven wheel and the driving wheel respectively support the front and rear ends of the supporting beam, and the connecting member is connected to the supporting beam and located between the driving wheel and the first driven wheels. The lifting mechanism includes a plurality of lifting members, a first driving system for driving the lifting member and a transmission system for transmitting the driving force of the first drive system to the lifting members.

Abstract: Provided are a preparation method for a propylene epoxidation catalyst, and a use thereof. During the preparation, an alkoxide solution of a prepared active component and a silica gel support are mixed, then a rotary evaporation treatment is performed on the mixture to remove a low-carbon alcohol to obtain a catalyst precursor, and then the obtained catalyst precursor is subjected to calcination and silylation treatments to obtain the propylene epoxidation catalyst. The catalyst is prepared in a simple process, can be applied to the chemical process of preparing propylene oxide by propylene epoxidation, has high average selectivity to propylene oxide, and has industrial application prospect.

Abstract: Methods, systems, and computer-readable media for automatic archiving of data store log data are disclosed. One or more operation records in a log are selected for archival. The one or more operation records comprise data indicative of operations performed on one or more data objects of a data store. The one or more operation records are selected for archival prior to deletion from the log. The one or more operation records are replicated from the log to an archive. Based at least in part on the replicating, the one or more operation records in the log are marked as archived. Based at least in part on the marking as archived, the deletion of the one or more operation records from the log is permitted.

Abstract: A system for storing multiple petabytes of raw log data from cloud-based source data buckets into internal partitioned data storage in a data lake is provided. The system is configured to: deploy a log partitioner cluster comprising a plurality of log partitioner service instances for storing the raw log data in a partitioned manner; associate one or more of the source data buckets to each of a plurality of deployed log partitioner service instances by providing associated configuration metadata from a configuration service; fetch, via the log partitioner cluster, raw log data from associated source data buckets based on the associated configuration metadata, wherein the associated configuration metadata provides instructions for use by a log partitioner service instance to onboard raw log data; and place fetched raw log data, via the log partitioner cluster, in the internal partitioned log storage in accordance with the associated configuration metadata.

Abstract: The present disclosure discloses a radar positioning method, a positioning radar and a positioning system. Reflection data of a radar beacon combination is received, a distance from a target object to each beacon is determined based on the reflection data, and position information of the target object is determined based on a distance from the target object to each beacon and pre-stored position information of each beacon. Thus, accurate position information may be provided where a satellite positioning signal of the target object is weak or there is no satellite positioning signal.

Abstract: A method, computer system, and a computer program product for assessing energy consumption is provided. The present invention may include determining a first set of critical energy consumption units (ECUs) involved in a target production process, the pool of the critical ECUs being obtained based on a plurality of reference production processes. The present invention may then include determining a second set of critical ECUs involved in the candidate production process. The present invention may also include determining a first set of non-critical ECUs involved in the target production process, the pool of the non-critical ECUs being obtained based on the plurality of reference production processes. The present invention may then include determining, a second set of non-critical ECUs involved in the candidate production process. The present invention may further include determining the process similarity.

Abstract: An insulation monitoring method and system for a traction battery and an apparatus are proposed to solve the problem of how to accurately predict a risk of insulation deterioration of the traction battery before the insulation deterioration occurs on the traction battery, so as to provide an early warning about failures in the traction battery. In this method, data statistics on a large amount of insulation resistance values within a long period of time are collected, and whether the traction battery has the risk of insulation deterioration is determined by analysis based on a data statistical result; and if the traction battery has the risk of insulation deterioration, alarm information is output. In this method, based on data statistical analysis performed on the large amount of insulation resistance values within a long period of time, insulation deterioration can be predicted before the insulation deterioration occurs on the traction battery.

Abstract: The disclosure provides a method and system for monitoring a battery short circuit and an apparatus. The method includes: receiving collected electrical signal information of all cells in each traction battery; performing self-discharge observation and calculating a self-discharge rate based on a cell voltage in electrical signal information of each cell after depolarization is completed, to determine whether there is an internal short circuit in a traction battery where the cell corresponding to the self-discharge rate is located; and triggering alarm handling for the internal short circuit in the traction battery based on a back-fed result that there is an internal short circuit in the traction battery.

Abstract: Disclosed by the present invention are a graphical user interface redrawing method, a terminal device and a computer readable storage medium. The method comprises: merging invalidate data of multiple Views under the same View Group in the same VSYNC drawing period in an Android system GUI and saving to a HashMap; sending to a user interface (UI) thread a message for delaying execution of an invalidate instruction; reading all invalidate data from the HashMap and emptying the HashMap after a delay time interval of the message is reached; and executing the invalidate instruction according to the read invalidate data.

Abstract: Methods, systems, and computer-readable media for automatic archiving of data store log data are disclosed. One or more operation records in a log are selected for archival. The one or more operation records comprise data indicative of operations performed on one or more data objects of a data store. The one or more operation records are selected for archival prior to deletion from the log. The one or more operation records are replicated from the log to an archive. Based at least in part on the replicating, the one or more operation records in the log are marked as archived. Based at least in part on the marking as archived, the deletion of the one or more operation records from the log is permitted.

Abstract: Disclosed is a processing method of a self-reinforced starch-based multifunctional material, and belongs to the technical field of starch deep processing. The processing method takes bulk starch as a base material, including the following steps: firstly reacting starch nanoparticles with an organic acid anhydride reagent and adding a bacteriostatic agent to prepare composite nanoparticles, then mixing the composite nanoparticles with the bulk starch, an etherifying agent, a crosslinking agent, a plasticizer and the like, and finally preparing a starch-based multifunctional material by dry extrusion modification combined with a starch-based nanoparticle assembly and reinforcement technology. The method of the disclosure is simple and convenient in step, mild and controllable in reaction, and continuous and green in production.

Abstract: A porous material of a medical implant material, the material body of which is a hierarchical porous material with multilevel pore cavities graded according a pore size of the material. The permeability of the hierarchical porous material is more than 0.5×10?9 m2. The hierarchical porous material can fully ensure blood flow, achieve transmission of adequate nutrients and growth factors, migration of cells, and remove cell fragments and stimulate tissue growth, and has various functions, thus fully satisfying the requirements of human tissue regeneration.