Abstract: The present disclosure discloses an active camera relocation method having robustness to illumination includes the following steps: extracting effective plane region image sets of scenes in a current observation image T and a reference observation image R; establishing a matching relationship in the effective plane region image sets T and R; obtaining a camera relative pose Pi guided by each group of matched planes; obtaining information for guiding the motion of a camera by fusing all camera relative poses Pi; determining whether a relocation process is completed by motion steps.

Abstract: A creation method for creating an action resource, an execution method of an action, an electronic device, and a storage medium are provided. The creation method includes receiving a first creation request that includes a target resource; creating a first action resource, which is a resource used for triggering a first action for the target resource, according to the first creation request; creating the first action resource includes: creating at least one of a first conflict priority attribute and a first conflict priority effective time attribute for the first action resource; the first conflict priority attribute represents a priority of the first action resource relative to an action resource that conflicts with the first action resource and is aimed at the target resource, and the first conflict priority effective time attribute represents a time range in which the first action resource has exclusive access to the target resource.

Abstract: Some embodiments of the invention provide a method for deploying network elements for a set of machines in a set of one or more datacenters. The datacenter set is part of one availability zone in some embodiments. The method receives intent-based API (Application Programming Interface) requests, and parses these API requests to identify a set of network elements to connect and/or perform services for the set of machines. In some embodiments, the API is a hierarchical document that can specify multiple different compute and/or network elements at different levels of compute and/or network element hierarchy. The method performs automated processes to define a virtual private cloud (VPC) to connect the set of machines to a logical network that segregates the set of machines from other machines in the datacenter set. In some embodiments, the set of machines include virtual machines and containers, the VPC is defined with a supervisor cluster namespace, and the API requests are provided as YAML files.

Abstract: A flexible power plant based on supercritical carbon dioxide power circulation in combination with seawater desalination and a control method thereof are provided. By means of the integrated process based on supercritical carbon dioxide power circulation in combination with seawater desalination, the power plant uses a new two-stage supercritical CO2 Breton circulation to reduce the exhaust temperature of the heat source, enhance the thermal efficiency of the thermodynamic circulation, improve the flexibility and adjustability of the output of the thermal power plant, and correspondingly raise the utilization efficiency of the low-temperature dynamic heat source in the seawater desalination process, so that it serves as a standing “flexible load” of the power plant, and further enhance the overall efficiency and flexibility of the power plant.

Abstract: A heterogeneous image registration method includes: performing edge detection on collected images, in combination with a curvature scale space strategy to extract contour curved segments in an edge image. Implementing a feature point detection strategy based on global and local curvature detecting feature points in the contour curved segments, and obtaining the nearest minimum local curvature of the feature points pointing to starting and end points of the contour, respectively. Calculating the number of neighborhood sampling points and neighborhood auxiliary feature points of neighborhoods on both edges of each of the feature points according to the nearest minimum local curvature. Using neighborhood auxiliary feature points and feature points to form a feature triangle, calculating an angle bisector vector and a main direction corresponding to the feature point in the feature triangle.

Abstract: Disclosed are a method for transmitting a cross-resource event notification, an electronic device and a system.

Abstract: A playback device including a housing, an audio player, a sound insulation cover, a target detection apparatus, and a driving mechanism. A sound hole is disposed on the housing, the sound insulation cover is disposed in the housing, the audio player is disposed in the sound insulation cover, a sound outlet is disposed on the sound insulation cover, the target detection apparatus is configured to detect a target direction, the driving mechanism is connected to the sound insulation cover, and in a case that the sound outlet does not face the target direction, the driving mechanism is controlled to start, and the driving mechanism drives the sound insulation cover to rotate, so that the sound outlet faces the target direction. This application discloses a control method for a playback device, a control apparatus for a playback device, and a computer-readable storage medium.

Abstract: A ballastless track roadbed damage forewarning method considering uncertainty includes the following steps. Step 1: counting roadbed material parameters and precipitation; Step 2: establishing a FLAC-PFC model of a ballastless track roadbed and calibrating mesoscopic parameters of a roadbed surface layer; Step 3: generating a lognormal random field of particle contact friction coefficients and assigning it to particle contact nodes of the roadbed surface layer; Step 4: perform sampling on the precipitation and adjusting a fluid domain of the roadbed surface layer; Step 5: determining a worst spatial correlation distance in the random field; and Step 6: calculating a damage probability pf of the roadbed surface layer under the worst spatial correlation distance; outputting alarm information when pf exceeds an alarm threshold, otherwise, quitting. The method monitors and gives early warning of damage to the roadbed surface layer under dynamic loads, ensuring driving safety.

Abstract: A ballastless track roadbed damage forewarning method considering uncertainty includes the following steps. Step 1: counting roadbed material parameters and precipitation; Step 2: establishing a FLAC-PFC model of a ballastless track roadbed and calibrating mesoscopic parameters of a roadbed surface layer; Step 3: generating a lognormal random field of particle contact friction coefficients and assigning it to particle contact nodes of the roadbed surface layer; Step 4: perform sampling on the precipitation and adjusting a fluid domain of the roadbed surface layer; Step 5: determining a worst spatial correlation distance in the random field; and Step 6: calculating a damage probability pf of the roadbed surface layer under the worst spatial correlation distance; outputting alarm information when pf exceeds an alarm threshold, otherwise, quitting. The method monitors and gives early warning of damage to the roadbed surface layer under dynamic loads, ensuring driving safety.

Abstract: An exemplary virtual reality media provider system (“system”) receives, from a media player device (“device”) by way of a network, a request for the device to provide a user with an immersive virtual reality experience. The system transmits, to the device by way of the network and in response to the request, a specification file corresponding to the immersive virtual reality experience. The specification file comprises data that defines a plurality of elements included in the immersive virtual reality experience, associates an event with a particular element included in the plurality of elements, and associates a behavior with the event that is associated with the particular element, the behavior configured to be performed with respect to the particular element in response to an occurrence of the event within the immersive virtual reality experience. The device uses the specification file to provide the user with the immersive virtual reality experience.

Abstract: Disclosed are a composite absorbent and a method for using same in the absorption and conversion of ethylene oxide for the coupling co-production of ethylene carbonate. The composite absorbent comprises an ionic liquid and ethylene carbonate, wherein the ionic liquid is an imidazole ionic liquid, a quaternary ammonium ionic liquid and a quaternary phosphonium ionic liquid. The composite absorbent is used for absorbing ethylene oxide and carbon dioxide, and is also used in the absorption and conversion of ethylene oxide for the coupling co-production of ethylene carbonate.

Abstract: A mask includes a mask body and at least one sub-mask provided on the mask body. The sub-mask includes an evaporation zone and a shield portion. The shield portion is provided with at least one groove in a thickness direction of the sub-mask. The groove has a depth smaller than a thickness of the mask body. Since the shield portion is provided with the groove, and a single groove has a depth smaller than the thickness of the mask body, it not only ensures that there is no pixel evaporated onto a substrate at the shield portion, but also reduces the thickness of the shield portion, thereby reduces weight thereof, lowers the weight difference between the shield portion and the evaporation zone and reduces the stress concentration on the shield portion, resulting in that the mask body is evenly stressed during tensioning.

Abstract: A system and a process for co-producing dimethyl carbonate and ethylene glycol. The system comprises an interconnected ethylene carbonate preparation unit and an ethylene carbonate alcoholysis unit. The ethylene carbonate preparation unit comprises a fixed bed reactor and a light-component stripping column connected to each other. The fixed bed reactor is filled with a supported ionic liquid catalyst. The process comprises the steps of: reacting carbon dioxide and ethylene oxide as raw materials in the fixed bed reactor to produce ethylene carbonate, purifying the ethylene carbonate and then mixing it with an alcoholysis reaction catalyst, and reacting the mixture with methanol in a reactive distillation tower, producing dimethyl carbonate and ethylene glycol. The process increases the conversion rate of ethylene oxide and avoids the need for a process of separating conventional homogeneous catalysts from ethylene carbonate, thereby reducing process energy consumption and simplifying process procedures.

Abstract: A system and a process for co-producing dimethyl carbonate and ethylene glycol. The system comprises an interconnected ethylene carbonate preparation unit and an ethylene carbonate alcoholysis unit. The ethylene carbonate preparation unit comprises a fixed bed reactor and a light-component stripping column connected to each other. The fixed bed reactor is filled with a supported ionic liquid catalyst. The process comprises the steps of: reacting carbon dioxide and ethylene oxide as raw materials in the fixed bed reactor to produce ethylene carbonate, purifying the ethylene carbonate and then mixing it with an alcoholysis reaction catalyst, and reacting the mixture with methanol in a reactive distillation tower, producing dimethyl carbonate and ethylene glycol. The process increases the conversion rate of ethylene oxide and avoids the need for a process of separating conventional homogeneous catalysts from ethylene carbonate, thereby reducing process energy consumption and simplifying process procedures.

Abstract: An exemplary virtual reality media content access control system (“system”) selectively provides access to virtual reality media content for experiencing by a user of a media player client device (“client device”). In certain examples, the system detects a request from the client device to access an immersive virtual reality world that includes a virtual object assigned an access permissions profile, determines an access key and a device key associated with the request, validates the access key and the device key associated with the request, determines metadata associated with the access key, and selectively provides, based on the access permissions profile for the virtual object and on at least one of the device key associated with the request and the metadata associated with the access key, access to the virtual object for experiencing by the user of the client device as part of the immersive virtual reality world.

Abstract: A mask includes a mask body and at least one sub-mask provided on the mask body. The sub-mask includes an evaporation zone and a shield portion. The shield portion is provided with at least one groove in a thickness direction of the sub-mask. The groove has a depth smaller than a thickness of the mask body. Since the shield portion is provided with the groove, and a single groove has a depth smaller than the thickness of the mask body, it not only ensures that there is no pixel evaporated onto a substrate at the shield portion, but also reduces the thickness of the shield portion, thereby reduces weight thereof, lowers the weight difference between the shield portion and the evaporation zone and reduces the stress concentration on the shield portion, resulting in that the mask body is evenly stressed during tensioning.

Abstract: According to one aspect of the present invention, there is provided a method for performing storage control. Member storage media and a hot spare storage medium are identified in a storage system. The member storage media are members of a storage medium array, and the hot spare storage medium is for joining in the storage medium array when a member storage medium fails. Data on a member storage medium having a write amplification effect is migrated to the hot spare storage medium. In the member storage medium having a write amplification effect, an erase operation is performed on a storage medium where the migrated data is located. Embodiments of the present invention can alleviate adverse impact caused by a write amplification effect.

Abstract: According to one aspect of the present invention, there is provided a method for performing storage control. Member storage media and a hot spare storage medium are identified in a storage system. The member storage media are members of a storage medium array, and the hot spare storage medium is for joining in the storage medium array when a member storage medium fails. Data on a member storage medium having a write amplification effect is migrated to the hot spare storage medium. In the member storage medium having a write amplification effect, an erase operation is performed on a storage medium where the migrated data is located. Embodiments of the present invention can alleviate adverse impact caused by a write amplification effect.

Abstract: A data processing apparatus-implemented method, according to one embodiment, includes selecting blocks of data in at least one solid state drive for garbage collection in a garbage collection process, and creating a bitmap indicating which blocks of data are in the garbage collection process. The bitmap has a two bit structure for each of the blocks, where the two bit structure includes a unique pair of bits associated with a logical block address (LBA) of the individual one of the blocks associated with the two bit structure. One bit indicates whether the block is in the garbage collection process. The other bit indicates whether rebuilding of the block has been completed.

Abstract: An exemplary virtual reality media provider system (“system”) receives, from a media player device (“device”) by way of a network, a request for the device to provide a user with an immersive virtual reality experience. The system transmits, to the device by way of the network and in response to the request, a specification file corresponding to the immersive virtual reality experience. The specification file comprises data that defines a plurality of elements included in the immersive virtual reality experience, associates an event with a particular element included in the plurality of elements, and associates a behavior with the event that is associated with the particular element, the behavior configured to be performed with respect to the particular element in response to an occurrence of the event within the immersive virtual reality experience. The device uses the specification file to provide the user with the immersive virtual reality experience.