Abstract: A random emulsification digital absolute quantitative analysis method includes: performing random emulsification processing on a system to be emulsified to obtain several isolated reaction zones or droplets; determining the total number and volume information of the various reaction zones or droplets, the presence of target molecules to be tested in the respective reaction zones or droplets, and the number of reaction zones or droplets which do not contain the target molecules by combining acquired target images comprising image regions corresponding to the amplified reaction zones or droplets, and analyzing the target images; and accurately calculating the volume information of the various reaction zones or droplets, the presence of the target molecules to be tested in the respective reaction zones or droplets, and the number of reaction zones or droplets which do not contain the target molecules, the total number of target molecules in a sample to be tested.

Abstract: Authentication management by receiving a request to initiate an authentication from a computing device of a user, directing the request to a selected authentication service of a plurality of authentication services, wherein the selected authentication service is determined dynamically based on respective authentication metrics of the plurality of authentication services, receiving authentication information via the selected authentication service, and authenticating the user based on the received authentication information.

Abstract: A query string for an encrypted database storing a plurality of encrypted data records is received from a requestor. The query string is segmented to obtain at least one word. The at least one word is encrypted with the irreversible encryption algorithm to obtain at least one encrypted word. At least one first encrypted item with a co-occurrence weight higher than a preset threshold based on the at least one encrypted word and a co-occurrence statistics model is acquired. The co-occurrence statistics model is built to provide co-occurrence weights, each indicating a probability that the at least one encrypted word appears in a first encrypted data item of the plurality of encrypted data records. At least one second encrypted data item corresponding to the at least one first encrypted data item is acquired from the plurality of encrypted data records.

Abstract: An asynchronous capacitance-to-digital converter (CDC) is described that allows for very low-power operation when during inactive periods (when no conductive object is in contact or proximity to the sensing electrodes). Asynchronous operation of the CDC provides for capacitance-to-digital conversion without the use of system resources and more power intensive circuit elements.

Abstract: An embodiment includes deriving usage data associated with records of a database by monitoring requests to perform read operations on the records of the database. The embodiment generates record correlation data representative of correlations between respective groups of records of the database by parsing the usage data associated with the records of the database. The embodiment stores a plurality of records received as respective write requests during a first time interval in an intermediate storage medium. The embodiment identifies a correlation in the record correlation data between a first record of the plurality of records and a second record of the plurality of records. The embodiment selects, responsive to identifying the correlation, a first location in the database for writing the first record and a second location in the database for writing the second record based on a proximity of the first location to the second location.

Abstract: A method, a device and a computer program product for service allocation are proposed. In the method, a first allocation scheme for allocating a set of services to a set of containers is determined based on respective measurements of a plurality of service attributes related to each of the set of services in execution and respective importance levels of the plurality of service attributes. For a container of the set of containers, respective total measurements of the plurality of service attributes related to at least one of the set of services to be allocated to the container in the first allocation scheme are determined. In accordance with a determination that a total measurement of the respective total measurements exceeds a corresponding measurement threshold, the respective importance levels for use in determining a further allocation scheme for allocating the set of services are updated.

Abstract: Embodiments of the present disclosure relate to a method for building an application. According to the method, a request is received from a building environment to acquire at least one component for executing at least one function of at least one feature of the application. The at least one feature is to be deployed to at least one target node in a distributed service platform comprising a plurality of nodes. The at least one target node and the at least one component are determined based on the request. The at least one component is acquired from the at least one target node. The at least one component is sent to the building environment for building the at least one feature.

Abstract: A database is selected from a plurality of databases included in the distributed database cluster. A shard map of the database is acquired, wherein the shard map includes a distribution of a plurality of shards on the plurality of nodes, and one or more nodes of the plurality of nodes each includes at least one shard of an old version of the database to be upgraded to a new version. A sustainable serviceability of the database corresponding to each of the one or more nodes is predicted according to the shard map based on the assumption that the at least one shard of each of the one or more nodes has been upgraded from the old version to the new version.

Abstract: In an embodiment of the present invention, a checkpoint is received, the checkpoint indicating at least one source position of unprocessed object(s) of a plurality of objects on at least one source shard in a database system. In response to detecting a shard change related to the checkpoint to the at least one source shard, the shard change resulting in that the at least one source shard is updated to at least one destination shard, a mapping view is generated for representing position change of the unprocessed object(s) related to the shard change. An updated checkpoint is determined for indicating the at least one destination position of the unprocessed object(s) of the plurality of objects on at least one destination shard in the database system based on the mapping view. With these embodiments, the checkpoint may be managed in a more effective way.

Abstract: A trust rule between a first service and a second service in a plurality of services deployed in a distributed system is received; the trust rule defines whether the first service is allowed to access the second service. A trust tree is obtained for the distributed system, and the trust tree comprises a plurality of certificates for accessing the plurality of services. A first group of certificates is selected for the first service based on the trust rule and the trust tree, and the first group of certificates enables the first service to access the second service.

Abstract: Provided are a method and device for creating a gene mutation dictionary, and a method and device for compressing genomic data using the gene mutation dictionary. The method for creating a gene mutation dictionary includes: obtaining genome sequence data of a plurality of individuals of a species and reference genome data of the species; aligning genome sequence data of each individual to the reference genome data to obtain a mutation result of the genome sequence data of each individual relative to the reference genome data; partitioning a genome of the species into a plurality of unit regions of biological significance; and generating a plurality of mutant patterns of the individuals in each unit region by statistically analyzing mutant status for each unit region based on the mutation result, and numbering the mutant patterns, to obtain the gene mutation dictionary.

Abstract: A USB active optical cable and a plug capable of managing power consumption and state. The USB active optical cable and plug respectively comprises a first plug, a second plug, and an optical transmission medium used to connect the first plug and the second plug; the first plug and the second plug are configured to operate different operating states, including an initialization mode, a transmission mode, and a power saving mode, and they can switch between the different operating states. The USB active optical cable and plug are both based on the separate control of the transmitting unit and the receiving unit to distinguish different operating modes, provide necessary operating requirements and mode switching conditions for each mode, and also enable the checking and transmission of the plugging state in the power saving mode, thus facilitate the power consumption management of the active optical cable.

Abstract: In an approach for improving data access performance in memory, a processor monitors each data access to a data element in the memory from an application, wherein the application has a plurality of functions. A processor records, during runtime, each data access into a monitoring element table, wherein the record for each data access includes an identity, a start address, an end address, and a memory page number. A processor clusters recorded data accesses for each function based on a distance between data elements accessed in sequence. A processor allocates, based on the data element clustering result, the data elements in a same cluster into a same memory unit in the memory.

Abstract: A transmission unit, receiving unit, active transmission device and active transmission system applicable to USB signal, and is used for addressing the problem that the ping.LFPS signal is easy to lose; setting a detection threshold value to distinguish ping.LFPS signals from other LFPS signals to ensure that no ping.LFPS signals are missed; optimizing the USB3.X signal with a proxy module to generate proxy signals for ping.LFPS signals and other LFPS signals respectively; supporting and managing the Link training to improve the success rate of high-speed signal transmission by modifying circuit configuration and re-training.

Abstract: Provided is a method for synchronously sequencing a sense strand and an antisense strand of an insert DNA, including: performing two rounds of rolling circle amplification and multiple displacement amplification to obtain a DNA nano ball template including a read1 strand sequencing template and a read2 strand sequencing template; and hybridizing the read1 strand sequencing template and the read2 strand sequencing template with read1 strand sequencing primers and read2 strand sequencing primers, respectively, and simultaneously performing read1 strand sequencing and read2 strand sequencing to obtain sequences of the sense strand and the antisense strand of the insert DNA. The method of the present disclosure can perform the sequencing from both ends of the insert DNA, significantly saving the time and costs for sequencing, and increasing the sequencing throughput.

Abstract: Disclosed are a solid state drive and a write operation method. The solid state drive comprises: a controller, receiving write data from outside and comprising a first cache unit for storing the write data; a Flash memory, receiving the write data sent by the first cache unit according to a first instruction of the controller; a second cache unit, storing the write data from the first cache unit as backup data, and sending the backup data to the Flash memory according to a second instruction of the controller. The second instruction is obtained after the write data fails to be written into the Flash memory under the first instruction, so that the backup data can continue to be called if write operation fails. By combining advantages of the first and second cache units, efficiency and quality of write operations are improved and bandwidth requirements are lowered.

Abstract: Disclosed are a chassis of an automated guided vehicle and an automated guided vehicle. The chassis includes a front frame (1) and a rear frame (2) that are engaged with each other in a hinged joint manner, so as to allow a relative folding between the rear frame (2) and the front frame (1). The relative folding enables the driving wheels and the driven wheels to touch the ground on a sunken road at the same time to prevent that only the driven wheels (10) touch the ground while the driving wheels (9) slip, and increases the approach angle of the chassis on a convex road to prevent the front end of the chassis from touching any obstacle, which improve the safety of the vehicle. Moreover, the damping device (3) restricts the folding angle of the front frame (1) and the rear frame (2) to prevent that the relative folding angle of the front frame (1) and the rear frame (2) is too large to realize the transport function, and damps the folding angle for reducing vibration.

Abstract: In an embodiment of the present invention, a checkpoint is received, the checkpoint indicating at least one source position of unprocessed object(s) of a plurality of objects on at least one source shard in a database system. In response to detecting a shard change related to the checkpoint to the at least one source shard, the shard change resulting in that the at least one source shard is updated to at least one destination shard, a mapping view is generated for representing position change of the unprocessed object(s) related to the shard change. An updated checkpoint is determined for indicating the at least one destination position of the unprocessed object(s) of the plurality of objects on at least one destination shard in the database system based on the mapping view. With these embodiments, the checkpoint may be managed in a more effective way.

Abstract: An indication to remove one or more data in a time series database is received. A metadata index associated with the time series database is updated to indicate a soft removal of each data of the one or more data. A data hole index associated with the time series database is updated to indicate a data hole at a location of each data of the one or more data in the time series database. Responsive to an input/output rate for the time series database being below a threshold, the data hole of each data of the one or more data is optimized.

Abstract: In an approach to improve asynchronous replication in database clusters embodiments retain committed transactions during database cluster replication. Embodiments build and run asynchronous replication logic using database nodes running as one or more standalone nodes, wherein the asynchronous replication logic is responsible for data replication from a primary database node to one or more secondary database nodes. Embodiments register a replication reader to a sender node to replicate journal logs and replay the journal logs on the one or more secondary database nodes. Further, embodiments monitor replication lag metrics from the sender node and notify a replication source and a replication target of a generated replication plan, wherein the cluster controller instructs the replication source and the replication target to be ready to initiate the replication plan. Additionally, embodiments adjust a replication plan to allow the asynchronous replication logic to catch up and complete uncommitted transactions.