Abstract: Methods and systems are provided for controlling an audio and video transmission. The method includes receiving audio and video information reported from terminals, after establishing an audio and video transmission connection according to an audio and video transmission connection request; acquiring terminal types and a type of the audio and video transmission connection request; adjusting one or more audio and video transmission parameters according to the audio and video information, the terminal types, and the type of the audio and video transmission connection request; and issuing the adjusted audio and video transmission parameters to the corresponding terminals.

Abstract: Certain TRPV1-modulating imidazolo-, oxazolo-, and thiazolopyrimdine compounds are described. The compounds may be used in pharmaceutical compositions and methods for treating disease states, disorders, and conditions mediated by TRPV1 activity, such as pain, arthritis, itch, cough, asthma, or inflammatory bowel disease.

Abstract: Various embodiments of mechanisms for forming a slotted metal pad over a TSV in substrate are provided. The dielectric structures in the slotted metal pad reduce dishing effect during planarization of the slotted metal pad. As a result, the risk of having metal stringers in upper metal level(s) caused by the dishing effect is greatly reduced.

Abstract: A center-pillared full-face shaft drilling machine comprises a center pillar (1), device platforms (2), a derrick (3), a driving system (4), a personnel and material conveying system (5), a well wall support and protection system (6), a safeguard system (7), and an operation chamber (8). The derrick (3) is mounted at a wellhead. The operation chamber (8) is disposed on the derrick (3). The center pillar directly leads from the well bottom to the wellhead and is connected to a slide rack comprised in the derrick on the ground. The driving system (4) is mounted at the front end of the center pillar (1) of a device. The multiple device platforms (2) are sequentially mounted on the center pillar (1) of the device from rear to front. The personnel and material conveying system (5) and the safeguard system (7) are separately mounted on the device platforms at the rear of the driving system (4) and on the ground.

Abstract: Aspects of the subject matter described herein relate to reducing update conflicts when maintaining views. In aspects, a transaction in snapshot isolation may update a materialized view. Instead of being able to view the update within the transaction, the update is hidden to prevent the transaction from obtaining inconsistent data. When a transaction is not supposed to see an update to a materialized view that occurs within the transaction, additional information associated with the materialized view may indicate this. When a query of the materialized view is made within the transaction, the query engine may use the additional information to exclude data from the update in the result.

Abstract: A vertical shaft drilling rig using a novel drilling method, mainly comprising a derrick (1) and a mouth sealing flatcar (4) installed at the wellhead, and further comprising a drilling pipe (5), a pipe joint (6), a steady pressure device (7), a torque amplification driver (8), a cutter head (9), a muck removal system (10), a slurry treatment station (3), an electrical cabinet (14), a hydraulic station (13), and a power pipeline (11); a main drive (2) is mounted on the derrick; the lower part of the main drive is connected to the drilling pipe; the drilling pipe is provided with the pipe joint, the lower end of the drilling pipe is connected to the torque amplification driver; the lower end of the torque amplification driver is connected to the cutter head; the steady pressure device is mounted outside the torque amplification device; the slag dug up by the cutter head in the shaft is delivered to the slurry treatment station on the surface.

Abstract: A voice quality evaluation method, apparatus, and system comprises an obtained voice data packet is parsed, and a frame content characteristic of the data packet is determined according to a parse result, for example, the frame content characteristic is a silence frame and a voice frame. Then, a voice sequence is divided into statements according to the determined frame content characteristic, and the statements are divided into multiple frame loss events; after non-voice parameters are extracted according to the frame loss events, voice quality of each statement is evaluated according to a preset voice quality evaluation model and according to the non-voice parameters. Finally, voice quality of the entire voice sequence is evaluated according to the voice quality of each statement. By using this solution, prediction precision can be improved significantly, and accuracy of an evaluation result can be improved.

Abstract: Methods and systems for controlling an audio and video transmission channel for use in a server is provided. The method includes obtaining an audio and video transmission connection request, and obtaining transmission channel information reported from respective terminals to establish an audio and video transmission connection; determining a transmission channel type of the audio and video transmission connection, according to the reported transmission channel information; and issuing to the terminals the determined transmission channel type of the audio and video transmission connection.

Abstract: A system that implements a scaleable data storage service may maintain tables in a non-relational data store on behalf of clients. Each table may include multiple items. Each item may include one or more attributes, each containing a name-value pair. Attribute values may be scalars or sets of numbers or strings. The system may provide an API usable to request that values of one or more of an item's attributes be updated. An update request may be conditional on expected values of one or more item attributes (e.g., the same or different item attributes). In response to a request to update the values of one or more item attributes, the previous values and/or updated values may be optionally returned for the updated item attributes or for all attributes of an item targeted by an update request. Items stored in tables may be indexed using a simple or composite primary key.

Abstract: A system that implements a data storage service may store data in multiple replicated partitions on respective computing nodes on behalf of clients. A storage node may, based on the amount of provisioned resources on a given storage device or logical volume, identify candidate partition management operations to be performed, and may send information about the operations to a central partition management scheduler. The scheduler may apply a global prioritization scheme to determine an order in which to perform the candidate operations. The order may be based on whether the operations include partition splits or partition moves, whether they aim to reduce provisioned storage capacity or reduce throughput capacity on a storage device or logical volume, whether they conflict with each other, whether the total number of partitions (or replicas thereof) involved in partition management at any given time exceeds a pre-determined limit, or whether they were requested by clients.

Abstract: Aspects of the subject matter described herein relate to reducing update conflicts when maintaining views. In aspects, a transaction in snapshot isolation may update a materialized view. Instead of being able to view the update within the transaction, the update is hidden to prevent the transaction from obtaining inconsistent data. When a transaction is not supposed to see an update to a materialized view that occurs within the transaction, additional information associated with the materialized view may indicate this. When a query of the materialized view is made within the transaction, the query engine may use the additional information to exclude data from the update in the result.

Abstract: Distributed database management systems may perform range queries over the leading portion of a primary key. Non-random distribution of data may improve performance related to the processing of range queries, but may tend to cause workload to be concentrated on particular partitions. Groups of partitions may be expanded and collapsed based on detection of disproportionate workload. Disproportionate write workload may be distributed among a group of partitions that can subsequently be queried using a federated approach. Disproportionate read workload may be distributed among a group of read-only replicated partitions.

Abstract: Methods and apparatus for burst-mode admission control using token buckets are disclosed. A work request (such as a read or a write) directed to a work target is received. Based on a first criterion, a determination is made that the work target is in a burst mode of operation. A token population of a burst-mode token bucket is determined, and if the population meets a second criterion, the work request is accepted for execution.

Abstract: A system that implements a data storage service may store data in multiple replicated partitions on respective storage nodes. The selection of the storage nodes (or storage devices thereof) on which to store the partition replicas may be performed by administrative components that are responsible for partition management and resource allocation for respective groups of storage nodes (e.g., based on a global view of resource capacity or usage), or the selection of particular storage devices of a storage node may be determined by the storage node itself (e.g., based on a local view of resource capacity or usage). Placement policies applied at the administrative layer or storage layer may be based on the percentage or amount of provisioned, reserved, or available storage or IOPS capacity on each storage device, and particular placements (or subsequent operations to move partition replicas) may result in an overall resource utilization that is well balanced.

Abstract: Certain TRPV1-modulating imidazolo-, oxazolo-, and thiazolopyrimdine compounds are described. The compounds may be used in pharmaceutical compositions and methods for treating disease states, disorders, and conditions mediated by TRPV1 activity, such as pain, arthritis, itch, cough, asthma, or inflammatory bowel disease.

Abstract: A system that provides services to clients may receive and service requests, various ones of which may require different amounts of work. An admission control mechanism may manage requests based on tokens, each of which represents a fixed amount of work. The tokens may be added to a token bucket at rate that is dependent on a target work throughput rate while the number of tokens in the bucket does not exceed its maximum capacity. If at least a pre-determined minimum number of tokens is present in the bucket when a service request is received, it may be serviced. Servicing a request may include deducting an initial number of tokens from the bucket, determining that the amount of work performed in servicing the request is different than that represented by the initially deducted tokens, and deducting additional tokens from or replacing tokens in the bucket to reflect the difference.

Abstract: A voice quality evaluation method and apparatus are disclosed. The method includes determining a first voice quality of a to-be-evaluated voice signal by performing processing and an analysis on the to-be-evaluated voice signal, where the first voice quality includes a quality distortion value and/or a mean opinion score (MOS) value; and determining a voice quality evaluation result of the to-be-evaluated voice signal according to the first voice quality and at least one key performance indicator (KPI) parameter of a transmission channel of the to-be-evaluated voice signal. According to the voice quality evaluation method and apparatus in embodiments of the present disclosure, a voice quality of the to-be-evaluated voice signal is determined using the to-be-evaluated voice signal and the KPI parameter of the transmission channel of the to-be-evaluated voice signal, which can improve accuracy of voice quality evaluation.

Abstract: A database service may maintain tables on behalf of clients and may provision throughput capacity for those tables. A table may be divided into multiple partitions, according to hash of the primary key values for each of the items in the table, and the items in the table may be accessed using the hash of their primary key values. Provisioned throughput capacity for the table may be divided between the partitions and used in servicing requests directed to items in the table. The service (or underlying system) may provide mechanisms for generating skew-related metrics or reports and presenting them to clients via a graphical user interface (GUI). The metrics and reports may indicate the amount of uniformity or skew in the distribution of requests across the key space for the table using histograms, heat maps, or other representations. Clients may initiate actions to correct any skewing via the GUI.

Abstract: Methods and apparatus for compound token buckets usable for burst-mode admission control are disclosed. A peak burst rate and a sustained burst rate of work requests that are to be supported at a work target are determined. The maximum token populations of a peak-burst token bucket and a sustained-burst token bucket are configured, based on the peak burst rate and the sustained burst rate respectively. In response to receiving a work request directed at the work target, a determination to accept the work request for execution is made based at least in part on the token population of the peak-burst token bucket and/or the sustained-burst token bucket.

Abstract: A system that implements a data storage service may maintain tables in a data store on behalf of clients. The service may maintain table data in multiple replicas of partitions of the data that are stored on respective computing nodes in the system. In response to detecting a failure or fault condition, or receiving a service request from a client to move or copy a partition replica, the data store may copy a partition replica to another computing node using a physical copy mechanism. The physical copy mechanism may copy table data from physical storage locations in which it is stored to physical storage locations allocated to a destination replica on the other computing node. During copying, service requests to modify table data may be logged and applied to the replica being copied. A catch-up operation may be performed to apply modification requests received during copying to the destination replica.