Abstract: A method for prediction of key performance parameters of an aero-engine in transition condition. Bench test data for an aero-engine in transition condition provided by a research institute is used for establishing a training dataset and a testing dataset first; parameter combination is used for predicting and analyzing engine exhaust temperature based on the idea of information fusion; and the method of rolling windows is used for rolling learning in order to predict the parameters such as low pressure rotor speed and exhaust temperature of an engine from the perspective of practical engineering application.

Abstract: Various implementations include wearable audio devices having a spatialized virtual personal assistant (VPA). In other implementations, a method of controlling a wearable audio device having a spatialized VPA is disclosed. Other implementations include a method of generating a spatialized VPA in a wearable audio device.

Abstract: Petrographic data of a carbonate reservoir in a subterranean region is received. Mud content of the carbonate reservoir is determined based on the petrographic data. A depositional porosity of the carbonate reservoir is computed based on the mud content. An amount of cementation of the carbonate reservoir is determined. A porosity loss by compaction of the carbonate reservoir is determined based on the mud content and the amount of cementation of the carbonate reservoir. A post-compaction porosity of the carbonate reservoir is computed based on the depositional porosity, the mud content, the amount of cementation, and the porosity loss by compaction.

Abstract: A method, apparatus, and computer-readable medium for leveraging real-time sales volume for conducting group buys comprising initializing a sale of an item, the sale specifying a current price of the item which is calculated based on a current sales volume of the item and sales volume ranges, processing transactions with users for items at a purchase price equal to the current price when a purchase request is received from the corresponding user, terminating the sale of the item at a closing price when the current sales volume has reached a threshold or when a period of time has passed since the sale was initialized, and crediting accounts belonging to one or more users with an additional amount based at least in part on a difference between the closing price and the purchase price for each item for the corresponding user.

Abstract: Provided is a pile integrity detection system based on cross-hole sonic logging method. The operator sets the ultrasonic detector into the measuring tubes of the to-be-detected pile, subsequently inputs the project data and activate the ultrasonic detector, by an acoustic wave transmission among a transmitter and a receiver, a wave energy data of the to-be-detected pile can be obtained, and the wave energy data and a project data will be automatically transmitted to the cloud computing module, thereby the integrity level of the to-be-detected pile can be determined without any manual analysis to the wave energy data, preventing from any error or deflection due to manual operation, whereby it greatly improves the accuracy and efficiency of detection and reduces the error rate.

Abstract: An air, sea, land and underwater tilt tri-rotor UAV capable of performing vertical take-off and landing. By the method for controlling a submerged floating device and a tilt tri-rotor device, the UAV is switched among the vertical take-off and landing mode, fixed wing mode, water surface sailing mode and underwater submerging mode, thereby making same have the advantages of four kinds of UAVs, and enhancing the applicability, maneuverability and efficiency of UAV. This has high efficiency in power system, has obviously improved endurance time and flight distance as compared with the traditional multi rotor UAV because of having the fixed wing mode, is applicable to more scenarios, and may operate on flat land, mountain land, water surface and underwater, thereby completing designated missions such as aerial, ground, water surface and underwater investigation, survey and concealment.

Abstract: An underwater launching apparatus for a small unmanned aerial vehicle capable of floating on water, having an airbag, inflating module, airbag arm, cylindrical body, upper baffle plate, spring, airbag arm connecting rod, lower baffle plate, upper buckle and lower buckle. This apparatus has compact and reliable structure. Relative to a traditional underwater catapult, the apparatus has smaller body and completes deployment and ejection of the launching apparatus by means of elasticity of the spring. The underwater launching apparatus for the small unmanned aerial vehicle has high stability and diversified applications. After the airbag arm of the catapult is deployed on the water and the inflating module inflates the airbag, developed area is larger and resistance to wind and waves is stronger. In a deployed state, a sensor on the unmanned aerial vehicle can be matched and steadily deployed on the water for investigation.

Abstract: A tool-less quick assembly and disassembly device for a hard disk module, including a mounting rack, a hard disk accommodation cavity being provided on the mounting rack, a multilayer hard disk support structure being provided on the mounting rack inside the hard disk accommodation cavity, and a baffle being provided on the mounting rack at a position corresponding to each layer of the hard disk support structure, the baffle being provided at the end part of one end of the mounting rack, and the other end of the mounting rack being an opening end; elastic positioning mechanisms are provided on both sides of the mounting rack; elastic clamping mechanisms are provided at the bottom of the mounting rack. The invention can enable multiple hard disks to be completely assembled and disassembled without tools, has a simple structure, is easy to assemble and disassemble.

Abstract: Methods and a system are provided. A method includes automatically detecting, by an attribute structural variation detector, attribute structural variations in record schemas of a database lacking schema enforcement. The automatically detecting step includes encoding, by an encoder, nodes in the record schemas based on respective updated node labels to obtain a plurality of codes. The encoding step comprises, for each of the plurality of codes: recording, by a label frequency counter, a frequency f1 of the record schemas that include a given label; and recording, by a label frequency counter, a frequency fc of the record schemas that use a given one of the plurality of codes to update a label of a next level. An attribute variation is detected and retrieved responsive to the frequency fc?0, and the frequency f1>(two times the frequency fc).

Abstract: Methods and a system are provided. A method includes automatically detecting, by an attribute structural variation detector, attribute structural variations in record schemas of a database lacking schema enforcement. The automatically detecting step includes encoding, by an encoder, nodes in the record schemas based on respective updated node labels to obtain a plurality of codes. The automatically detecting step further includes clustering, by a clusterer, the plurality of codes into one of a used category and an unused category. The used category and the unused category respectively consist of any of the plurality of codes used or unused to update a child label. The automatically detecting step also includes, when an intersection set formed from the used and unused categories has at least one member, retrieving, by the attribute structural variation detector, the at least one member as a structural variation between at least two of the record schemas.

Abstract: The present invention discloses a cloud-oriented stream scheduling method based on Android platform, which aims to solve the problem that the calculation and storage capability of the mobile terminal device are limited and the application has a low expandability. The technical solution of the present invention is to build a core scheduling routine and an App management routine in a mobile terminal device based on Android operation system, and build a cloud management service subsystem in cloud server to construct a cloud-oriented stream scheduling system based on the Android platform to make the mobile terminal device enabled to dynamically install or uninstall the applications according to security attribute, user behavior habit, network status and transmission quality, processing capability of current mobile terminal device, and timed task of the application and achieve the consistent application view on the level of the mobile terminal device.

Abstract: A mechanism is provided for identifying a usage for data in a data structure. A set of configuration files associated with a set of services are analyzed to identify at least one class associate with the data in the data structure thereby forming a data structure-to-class mapping. Source code associated with the set of services is analyzed to identify a set of services used by at least one class in the data structure-to-class mapping thereby forming a service-to-class mapping. A set of specification files associated with the set of services are analyzed to identify a set of uses associated with at least one service in the service-to-class mapping thereby forming a use-to-service mapping. An identification of usage information of the data structure is generated using the data structure-to-class mapping, the service-to-class mapping, and the use-to-service mapping.

Abstract: Disclosed are a control system and method for data transmission, and a chip array and a display. The control system for data transmission comprises: a chip array, comprising a plurality of rows of chip assemblies, wherein any row of chip assembly includes at least two chip sets, all chips in each chip set are cascaded with each other; and a controller, configured to receive display data, and generate, according to the display data, a plurality of sets of display signals corresponding to the plurality of rows of chip assemblies, wherein any set of display signal is divided into at least two sub-display signals corresponding to the at least two chip sets, any sub-display signal accesses to a signal input end of a first chip in a corresponding chip set. The control system and method for data transmission, and a chip array and a display solve the technical problem in the related art that electromagnetic radiation increases when a data transmission range is enlarged.

Abstract: The present invention relates to well drilling field in the petroleum industry, particularly to accelerator used for drilling fluids, water-based drilling fluid and usage thereof. The accelerator contains: sulfonated polyglycerol long-chain fatty acid ester, fatty alcohol polyoxyethylene ether, alcohol ether carboxylate, glycidyl ether, and polyoxyethylene alkylphenol ether; wherein, the weight ratio of the sulfonated polyglycerol long-chain fatty acid ester:the fatty alcohol polyoxyethylene ether:the alcohol ether carboxylate:the glycidyl ether:the polyoxyethylene alkylphenol ether is 100:1-10:0.5-10:1-10:1-10. The accelerator provided in the present invention can lubricate the drill bit and drilling tool, prevent accumulation of drill cuttings, reduce friction, and improve rate of penetrate.

Abstract: The present invention relates to the well drilling field in the petroleum industry, particularly to film former used for coal-bed gas well drilling and preparation method thereof, drilling fluid and usage thereof. The preparation method of the film former includes: (1) controlling polycaprolactone diol and diisocyanate to have a first polymerization reaction in the presence of a polyurethane catalyst, to obtain a polyurethane prepolymer with two ends blocked by diisocyanate; (2) controlling the product of the first polymerization reaction to have a chain extension reaction with a polyalcohol; (3) controlling the product of the chain extension reaction and one part of hydroxyalkyl acrylate monomer to have an additive reaction, and then introducing the other part of hydroxyalkyl acrylate monomer and a styrene monomer, and emulsifying in water to obtain an emulsion; (4) mixing a radical initiator with the emulsion to have a second polymerization reaction.

Abstract: The present invention relates to well drilling field in the petroleum industry, particularly to accelerator used for drilling fluids, water-based drilling fluid and usage thereof. The accelerator contains: sulfonated polyglycerol long-chain fatty acid ester, fatty alcohol polyoxyethylene ether, alcohol ether carboxylate, glycidyl ether, and polyoxyethylene alkylphenol ether; wherein, the weight ratio of the sulfonated polyglycerol long-chain fatty acid ester:the fatty alcohol polyoxyethylene ether:the alcohol ether carboxylate:the glycidyl ether:the polyoxyethylene alkylphenol ether is 100:1-10:0.5-10:1-10:1-10. The accelerator provided in the present invention can lubricate the drill bit and drilling tool, prevent accumulation of drill cuttings, reduce friction, and improve rate of penetrate.

Abstract: The present invention relates to the well drilling field in the petroleum industry, particularly to film former used for coal-bed gas well drilling and preparation method thereof, drilling fluid and usage thereof. The preparation method of the film former includes: (1) controlling polycaprolactone diol and diisocyanate to have a first polymerization reaction in the presence of a polyurethane catalyst, to obtain a polyurethane prepolymer with two ends blocked by diisocyanate; (2) controlling the product of the first polymerization reaction to have a chain extension reaction with a polyalcohol; (3) controlling the product of the chain extension reaction and one part of hydroxyalkyl acrylate monomer to have an additive reaction, and then introducing the other part of hydroxyalkyl acrylate monomer and a styrene monomer, and emulsifying in water to obtain an emulsion; (4) mixing a radical initiator with the emulsion to have a second polymerization reaction.

Abstract: An online sensor calibration verification system includes at least one sensor configured to extract a calibration feature included in a field of view of the sensor. The online sensor calibration verification system further includes an electronic calibration verification module configured to determine a static reference feature model, and to verify a calibration of the at least one sensor based on a positional relationship between an extracted calibration feature and the static reference feature model.

Abstract: The present invention discloses a cloud-oriented stream scheduling method based on Android platform, which aims to solve the problem that the calculation and storage capability of the mobile terminal device are limited and the application has a low expandability. The technical solution of the present invention is to build a core scheduling routine and an App management routine in a mobile terminal device based on Android operation system, and build a cloud management service subsystem in cloud server to construct a cloud-oriented stream scheduling system based on the Android platform to make the mobile terminal device enabled to dynamically install or uninstall the applications according to security attribute, user behavior habit, network status and transmission quality, processing capability of current mobile terminal device, and timed task of the application and achieve the consistent application view on the level of the mobile terminal device.

Abstract: Disclosed are a control system and method for data transmission, and a chip array and a display. The control system for data transmission comprises: a chip array, comprising a plurality of rows of chip assemblies, wherein any row of chip assembly includes at least two chip sets, all chips in each chip set are cascaded with each other; and a controller, configured to receive display data, and generate, according to the display data, a plurality of sets of display signals corresponding to the plurality of rows of chip assemblies, wherein any set of display signal is divided into at least two sub-display signals corresponding to the at least two chip sets, any sub-display signal accesses to a signal input end of a first chip in a corresponding chip set. The control system and method for data transmission, and a chip array and a display solve the technical problem in the related art that electromagnetic radiation increases when a data transmission range is enlarged.