Abstract: The present disclosure provides a variable-rate spray control system based on an annular application structure and a tree canopy volume (TCV) calculation method thereof. The TCV calculation method includes: acquiring in real time, by using vertical/horizontal scanning two-dimensional (2D) LiDAR, point cloud data of a variable-rate sprayer in motion in an orchard environment; acquiring speed information of the variable-rate sprayer by using a speed sensor; dividing spraying regions according to an angle at which contacts of nozzles on an annular application structure are mutually spaced on an arc; filtering interferences by setting a threshold range, calculating a sector area of a tree canopy according to trunk distance information from the horizontal LiDAR and point cloud information from the vertical LiDAR within the threshold range, and calculating a TCV in combination with the information of the speed sensor and a scanning cycle of the vertical LiDAR.

Abstract: The present disclosure relates to methods of enhancing self-amplifying mRNA molecules (SAMs) encapsulated within lipid nanoparticles (LNPs). Specifically, enhancement of the stability, potency, and/or shelf-life of SAM/LNPs formulated in the presence of reducing agents is discussed.

Abstract: The disclosure relates to the field of vehicle hooks, and in particular to a vehicle hook capable of preventing reel disengagement and a vehicle, aiming at solving the problem of disengagement proneness of an existing rewinding reel from mounting notches of a hook base. To this end, the vehicle hook capable of preventing reel disengagement according to the disclosure comprises a mounting portion and a rewinding reel, wherein the mounting portion is configured to be connected to a vehicle and is provided with at least two mounting notches, the rewinding reel is rotatably arranged in the mounting notches and removably connected to the mounting portion, and at least one of the at least two mounting notches is a closable notch.

Abstract: A method includes obtaining a stream of consecutive network configuration snapshots each including network configuration information. The method also includes determining that first network configuration information of a first network configuration snapshot of the network from the stream of consecutive network configuration snapshots for the network is not the same as second network configuration information of a second network configuration snapshot of the network from the stream of consecutive network configuration snapshots for the network. The method also includes generating a reachability differentiation graph that identifies a net change to reachability from the first network configuration information and the second network configuration information based on determining that the first network configuration information is not the same as the second network configuration information.

Abstract: A system for estimating attenuation coefficients from only single photon emission computed tomography (SPECT) emission data using deep neural networks includes an artificial neural network based upon machine learning system estimating attenuation maps for SPECT emission data, and associated attenuation correction method.

Abstract: Provided is a verification phantom. The verification phantom is provided with a slot for holding a film, wherein the slot includes a first slot and a second slot; an opening of the first slot and an opening of the second slot are both disposed on a first outer surface of the verification phantom; and an extraction groove is disposed at a junction, on the first outer surface, of the opening of the first slot and the opening of the second slot.

Abstract: A set of tasks is extracted from workflow data of a system. A set of keywords is extracted from a task in the set of tasks. The set of keywords is expanded into an expanded set of keywords, the expanded set of keywords comprising a new keyword with a semantic relationship to a keyword in the set of keywords. A new task is generated using the expanded set of keywords. Based on a result of execution of the new task, a model of the system is adjusted, the model comprising the workflow data, the set of tasks, and the expanded set of keywords.

Abstract: The present disclosure provides a system for MRI. The system may obtain a plurality of echo signals relating to a subject that are excited by an MRI pulse sequence applied to the subject. The system may perform a quantitative measurement on the subject based on the plurality of echo signals. The MRI pulse sequence may include a CEST module configured to selectively excite exchangeable protons or exchangeable molecules in the subject, an RF excitation pulse applied after the CEST module configured to excite a plurality of gradient echoes, and one or more refocusing pulses applied after the RF excitation pulse. Each of the refocusing pulses may be configured to excite one or more spin echoes. The one or more spin echoes excited by at least one of the one or more refocusing pulses may include a symmetric spin echo and one or more asymmetric spin echoes.

Abstract: A metasurface structure includes a substrate having a first region and a second region not overlapping with the first region; a first pillar element within the first region on the substrate; and a second pillar element within the second region on the substrate. The first pillar element has a first sectional profile and the second pillar element has a second sectional profile that is different from the first sectional profile. At least one of the first sectional profile and the second sectional profile is of a non-rectangular shape.

Abstract: A method includes receiving, from a user device, a reachability request requesting a reachability status of network traffic from a first VM of a VPC to a second VM of the VPC. The method also includes obtaining network configuration information defining a configuration of a network connecting the first VM and the second VM, generating, using the network configuration information associated with the VPC, a simulated path between the first VM and the second VM, and, determining, based on the simulated path, that the second VM is unreachable from the first VM. The method further includes, based on determining that the second VM is unreachable from the first VM, generating a reachability report, the reachability report including each hop of the plurality of hops of the simulated path, and a rationale that the second VM is unreachable from the first VM, and providing the reachability report to the user device.

Abstract: Provided is a risk assessment method for power transmission line windage yaw flashover. The method includes determining the influence factors of power transmission line windage yaw flashover and setting risk assessment indexes according to the influence factors (S101); generating the standard cloud of the risk assessment indexes according to the incident occurrence probabilities and the consequence levels of the risk assessment indexes (S103); scoring the influence factors according to the risk assessment indexes and generating the risk cloud of the risk assessment indexes according to scoring results (S105); and performing a two-dimensional similarity calculation on the risk cloud and the standard cloud to obtain two-dimensional similarity between the risk cloud and the standard cloud and determining the risk level of the power transmission line windage yaw flashover according to the two-dimensional similarity (S107).

Abstract: A zoom lens includes a first lens group and a second lens group. A relative movement between the first lens group and the second lens group is allowed, whereby the zoom lens zooms between a wide-angle end and a telephoto end. While the zoom lens is switched from the wide-angle end toward an intermediate state, the first lens group is moved toward the image side. While the zoom lens is switched from the intermediate state toward the telephoto end, the first lens group is moved toward the object side.

Abstract: A method of uniformly applying multicolor paint which comprises two or more paints of different colors in discrete domains. The method includes applying the multicolor paint to a paint roller cover and rolling the paint roller cover on a surface to form a painted surface. The paint roller cover comprises a foam having a surface extending between a first edge and a second edge and a groove on the surface wherein a portion of the groove is positioned at an angle relative to an edge of the foam and has a groove depth of 1 to 15 millimeters and an average cell size in the range of about 0.03 to about 0.5 cm, wherein the average cell size of the foam is within 25% of the average domain size in the multicolor paint.

Abstract: The present application discloses a child safety car seat having a main body and a fireproof buffering structure disposed on the main body. The fireproof buffering structure includes a buffering plate and a fireproof plate attached to or neighboring to the buffering plate, and the fireproof plate is closer to a seating space of the child safety car seat than the buffering plate. In contrast to conventional child safety car seats, the fireproof buffering structure of the present application adopts the combined buffering plate and fireproof plate. The buffering plate has good impact absorbing capacity for providing a soft and comfortable seating environment and buffering and protection effects during a crash accident, and the fireproof plate can reduce the combustion rate of the integral structure when catching fire. Therefore, the child safety car seat achieves the purposes of safety and comfort.

Abstract: A method, including: identifying static application features of an application; identifying resource access features of the application; labeling a translation lookaside buffer (TLB) miss threshold of a runtime feature of the application; determining utilization of larger pages during the runtime based on the TLB miss threshold; and setting the TLB miss threshold based on the determined utilization of the larger pages.

Abstract: The present application provides a new type of brushless high speed motor, in which the integrated shell and air duct are separately fixed to the outside of the inner hole column, the material of the air duct and the outer shell is BMC, and the material of the inner hole column is metal. The two parts are combined and configured to be made of different materials, which can effectively buffer and reduce the resonance point of the motor, and reduce the noise caused by the high speed rotation of the motor. In addition, the housing is configured as a split type, and the air duct and shell can be directly fixed outside the inner hole column by BMC injection molding, which reduces the processing technology, reduces the burr of the housing. A grounding post is provided on the outside of the stator package for grounding.

Abstract: An imaging correction unit and an imaging module are provided. The imaging correction unit has an optical axis, and includes an optical turning element and two wedge-shaped optical elements. The optical turning element has a light emitting surface, and the light emitting surface has a first included angle with respect to the optical axis. Each of the two wedge-shaped optical elements has an inclined optical surface, and the inclined optical surface has a second included angle with respect to the optical axis. The light emitting surface of the optical turning element faces one of the two wedge-shaped optical elements, and the two wedge-shaped optical elements are rotatable relative to the optical axis.

Abstract: Provided is a verification phantom. The verification phantom is provided with a slot for holding a film, wherein the slot includes a first slot and a second slot; an opening of the first slot and an opening of the second slot are both disposed on a first outer surface of the verification phantom; and an extraction groove is disposed at a junction, on the first outer surface, of the opening of the first slot and the opening of the second slot.

Abstract: An apparatus includes a body, a detection member, one or more processors, and one or more memories. The body is configured to carry a payload and is in one of a plurality of different states. The plurality of different states include a folded state and an unfolded state. The first detection member is mounted at the body and includes a magnetic sensor. The one or more memories store one or more computer programs that, when executed by the one or more processors, cause the one or more processors to obtain detection information collected by the first detection member and control the apparatus to be in a standby mode or an operation mode according to the first detection information. The detection information is related to the folded state or the unfolded state of the body.

Abstract: A method, including: monitoring resource utilization of an operating system (OS) with applications utilizing larger pages; determining the monitored resource utilization is greater than a threshold resource utilization; in response to the determining the monitored resource utilization is greater than a threshold resource utilization, determining a respective larger pages index value for each of the applications utilizing larger pages; and turning off larger pages utilization of a subset of the applications utilizing larger pages, wherein the subset comprises a predefined number of the applications utilizing larger pages that have highest determined larger pages index values.