47results about How to "Reduce range" patented technology

A wireless communication system includes a) a first device having a transmitter part with a Tx-antenna for transmitting an electrical signal having a signal bandwidth BW_sig and b) a second device having a receiver part with an Rx-antenna for receiving the transmitted electromagnetic signal. At least one of the Tx- and Rx-antennas is a narrowband antenna having an antenna bandwidth BW_ant, wherein the Tx- and/or Rx-antenna bandwidths fulfil the relation BW_ant=k·BW_sig. The system is adapted to provide that k is smaller than 1.25, and the antenna bandwidth BW_ant is defined as the −3 dB bandwidth of the loaded antenna when it is connected to the communication system, and the signal bandwidth BW_sig is defined as the bandwidth within which 99% of the desired signal power is located.

An edge-light type backlight system including a light guide panel which includes a light incident surface, a light emitting surface, and an optical deflector. The optical deflector is disposed on at least one of the light emitting surface of the light guide panel and a surface opposite to the light emitting surface. The optical deflector includes a first surface and a second surface on opposite sides of a normal line orthogonal to the light incident surface and become farther apart as distance from the light incident surface increases, the first surface and the second surface being perpendicular to the light emitting surface.

Pipelined analog to digital conversion systems are provided having cascaded multi-bit successive approximation register subconverter stages. Capacitor arrays are provided in the subconverter stages, where switching logic selectively couples the capacitors to operate in sample, conversion, and residue amplification modes for generating multi-bit subconverter digital outputs and analog subconverter residue outputs. In one implementation, the capacitors are switched according to a thermometer code to reduce differential converter non-linearity, and the first subconverter stage gain is reduced to improve the conversion system bandwidth.

An RFID system includes a reader with antenna, a first barrier, a tag with a link antenna, a second barrier, and two key antennas connected to the tag, mechanically arranged in that order. The first barrier has two or more apertures in it to produce an interference pattern of a security signal from the reader. The security signal interference pattern passes at least partly through the second barrier. One of the key antennas is at a peak of the pattern after passing through the second barrier, and one is not. The tag includes a controller responsive to a downlink signal from the reader to transmit an uplink signal using the link antenna, but only if the downlink signal is preceded by the security signal and the security signal is received more strongly by the key antenna at the peak than by the other key antenna.

The invention discloses a segmented power telecommunication network analysis method. The method includes the steps: firstly, realizing interoperation based on a PIIF framework integration; secondly, acquiring real-time operating conditions of a power distribution network terminal channel in real time by the interoperation, invoking a grid resource maintenance function component of a GIS (geographic information system), establishing power telecommunication network topology by depending on grid-resource topological correlation, correlating telecommunication network equipment to PMS equipment, and establishing association of a power distribution network channel and a telecommunication network channel to form an all-link monitoring view of the power distribution network channel and the telecommunication network channel; finally, when a telecommunication resource network management system has power telecommunication network faults or a power distribution automation system has power distribution network channel faults, visually judging locations of the faults. When the telecommunication network channel or the grid terminal channel has fault warning under the operating conditions, segmented analysis of the operating conditions can be performed, the occurrence interval of the faults can be reduced quickly, and accordingly processing efficiency of the telecommunication network faults is improved in an assisted manner.

In order to manage a neighbor list of neighboring base stations based on the location of a terminal communicating with a base station of a macrocell with femtocell deployments, the base station divides the macrocell in accordance with a predetermined standard of division, and generates a mobile neighbor advertisement message so as to periodically transmit the generated message to the terminal. At this time, the terminal identifies the current location thereof in the macrocell upon receipt of the pilot signals periodically transmitted from the base station of the macrocell. The terminal obtains information regarding the location of the terminal from the information regarding the femtocells deployed within the respective divided regions and information regarding macrocells neighboring the macrocell through using the mobile neighbor advertisement message to scan base stations.

The invention discloses a mini step excavation method suitable for IV-V level of surrounding rocks of a large-section tunnel. A tunnel face is divided into upper and lower steps, the height of the lower step ranges from 5m to 8m, and advanced geologic prediction is implemented; the tunnel face stability is evaluated and classified; whether to implement advanced support and tunnel face reinforcement is decided, and a processing method is used till the tunnel face is stable; a drill jumbo drills blast holes and fill an explosive in the full section of the tunnel face, whole detonation is carriedout, and the vertical length difference between the upper and lower steps ranges from 3m to 5m; ventilation, danger removing, under-excavation handling and slag removing are carried out on the tunnelface; the tunnel face after excavation is sketched geologically, the stability of the tunnel face is determined, a wet spraying manipulator sprays an early high-strength concrete preliminarily, and the tunnel face is enclosed; an arc centering installation trolley erects a steel frame and implements annular and vertical connection, and concrete is sprayed again to reach a design thickness; an inverted arc area of a present excavation cycle is back filled with hole slag, and work of next cycle is carried out; a movable inverted arch trestle is used to pour the inverted arc and sidewall with basic concrete; earthwork cloths and waterproof boards are laid, and lining steel bars of an arch wall are lashed; and the lining of the arch wall is poured and maintained.

The present disclosure relates to kits and associated methods for converting a semi-automatic firearm into a bolt single action firearm, as well as the converted firearm itself. The kit includes a housing (e.g. upper receiver) that accommodates a bolt carrier and a charging handle and a carrier key, if desired. The housing has ends which mount to the existing lower receiver of the semi-automatic firearm to convert the semi-automatic firearm into a manual bolt-action firearm.

A system and method for context-assisted information retrieval include a communication device, such as a wireless personal communication device, for transmitting screen-context information and voice data associated with a user request to a voice information retrieval server. The voice information retrieval server utilizes the screen-context information to define a grammar set to be used for speech recognition processing of the voice frames; processes the voice frames using the grammar set to identify response information requested by the user; and convert the response information into response voice data and response control data. The server transmits the response voice data and the response control data to the communication device, which generates an audible output using the response voice data and also generates display data using the response control data for display on the communication device.

The invention discloses an operating system vulnerability detection method and system based on code similarity analysis and a medium. The method comprises the steps: locating a vulnerability code segment, and forming an operating system vulnerability code library; screening an operating system source code library; for the vulnerability code segment, respectively generating a code attribute graph set by an operating system source code library; and respectively extracting features from the vulnerability function in the vulnerability code segment and the code attribute graph set of each functionto be tested in the operating system source code library, calculating similarity, detecting whether reuse of the vulnerability code exists or not, and outputting a result. The method aims at solving the problems that an existing vulnerability code reuse detection method is insufficient in detection capacity when oriented to large-scale software systems such as an operating system. By adopting themethods of screening the operating system source code library, progressively screening the multi-vulnerability characteristics and the like, the process of the existing detection method is improved and optimized, and good accuracy is considered while high operating efficiency is ensured.

The invention relates to a monitoring method for anticollision of a quayside container crane sling. The method of the invention employs two two-dimensional laser scanners, and once a car enters a seaside scanning area, the occluded two-dimensional laser scanner stops transmitting scanning data to an industrial control computer and a PLC (programmable logic controller) on-site, while the other two-dimensional laser scanner reads the height of the area and transmits the scanning data; once the car moves out of the occluded area, the two-dimensional laser scanner stopping transmitting scanning data transmits updated scanning data again to the industrial control computer and the PLC on-site; if the two two-dimensional laser scanners are both occluded by the car, ineffective data are first transmitted to the occluded area, and the height data are updated immediately when the car leaves. In the invention, the employment of two two-dimensional laser scanners can reduce the scope of a scanning blind area to the utmost and improve measuring accuracy, scanning efficiency and precision. Once one laser scanner breaks down, the other scanner can still maintain the normal work of an anticollision system. Thus, the method of the invention has high reliability.

The invention provides an artificial potential field path planning method of a flexible needle based on obstacle grading and a device, thereby settling problems of uncertain planning path and uncertain motion of the flexible needle in prior art. The device according to the invention comprises an image sensing system, a control system, an executing system and an upper computer. The method based onthe device comprises the steps of acquiring a real-time image of a flexible needle puncture environment by the image sensing system, identifying a target point and the obstacle in the image, performing grading on the obstacle, and calculating the potential energy of each position point in the current environment based on the artificial potential field; and performing static path planning by the control system according to the curvature restriction and optimization index in flexible needle path planning, obtaining an initial path and a needle entering point, then correcting the position pointsin the path according to a real-time acquired puncture environment image, and transmitting a control instruction to an executing system for controlling motion of the flexible needle. According to themethod and the device, more available paths can be planned and higher real-time performance in path planning is realized.

An electric drivetrain of a device, such as a gas compression device, includes an electric machine and a system for supplying power to the electric machine, the electric machine including a rotor and a stator. The electric machine is an asynchronous electric machine, and the power supply system is suitable for supplying voltage to the stator of the electric machine, the power supply system making up a source of voltage.

The invention provides a method of preventing galleries in a high concrete dam from arching and preventing a bottom plate from cracking. The method comprises the steps that Step 1, the allowable tensile strength and a time-dependent process of the allowable tensile strength are determined; Step 2, the stress distribution and the yield region distribution of the gallery parts of the dam, and time-dependent rules of the stress distribution and the yield region distribution are acquired; Step 3, the ranges and depths of gallery arching and bottom plate concrete tensile stress, exceeding the allowable tensile strength, are acquired. Step 4, the position, depth and width of a prefabricated seam are determined; Step 5, the prefabricated seams are distributed, the stress distribution, the yield region distribution, and the time-dependent rules of the stress distribution and the yield region distribution after the prefabricated seams of the galleries parts of the dam are prefabricated are acquired; Step 6, whether an area exceeding the concrete allowable tensile strength exist is determined; and Step 7, the form of the final prefabricated seam is determined. Through the layout of the longitudinal prefabricated seams of the galleries, the cracking of the gallery concrete is avoided, and the working behavior of the dam is improved.

A system and method for controlling boundary layer transition for a high-speed vehicle are disclosed. The method includes determining a location of onset of boundary-layer transition that naturally develops during high-speed flight of the high-speed vehicle, and providing a pair of flow control strips at a surface/wall/skin of the high-speed vehicle such that the boundary-layer transition is delayed or prevented during high-speed flight of the high-speed vehicle. The delayed or prevented locations of the transition result in a change in the high-speed boundary layer during the high-speed flight of the high-speed vehicle. The change in the high-speed boundary layer transition affects skin friction drag, aero-thermodynamic heating, and pressure fluctuations in the boundary layer of the high-speed vehicle.

A shutter device having two shutter plates, which shield between an IBS and a substrate, is configured such that the two shutter plates are disposed at symmetrical positions across the IBS and can perform an opening/closing operation in synchronization with a rotation of a rotation-link-member which is rotatably disposed surrounding the IBS. With the configuration, the shutter device can reduce an offset of a shield range in the opening/closing operation.

Printing methods are provided. In one aspect, at least one first toner image is formed and transferred onto a receiver to form a composite toner image on a receiver having a first polarity. A second net development difference of potential of the first polarity is created between a second development station, a bias member and the first toner at each location of the receiver, to cause a second toner of the first polarity to deposit at individual locations on the receiver in amounts that according to the second net development difference of potential at the individual locations such that total amount of first toner and any second toner deposited at each location on the receiver is within a range that is less than a range of first toner amounts on the receiver.

The invention discloses an incinerator, and belongs to the technical field of waste processing. The incinerator comprises an air chamber and a combustion chamber, and is characterized in that the air chamber is communicated with the combustion chamber; a waste adding pipe is arranged in the air chamber; a fuel inlet is formed in the upper portion of the air chamber; an air inlet jacket is arranged on the periphery of the air chamber; a through hole communicated with the air chamber is formed in the air inlet jacket; fire-resistant materials are arranged on the wall of the combustion chamber; a fuel inlet is formed in the upper portion of the combustion chamber; an air inlet is formed in the combustion chamber; the waste adding pipe is communicated with the combustion chamber, and covers a cooling water jacket arranged on the periphery of the air chamber in the connection position of the combustion chamber. According to the incinerator, fuel, combustion air and waste to be processed are adequately mixed to form a high-speed cyclone, the high-speed cyclone adequately combusts in a high-speed rotating state; because a big-diameter feed pipe can be adopted, the incinerator is not blocked, does not corrode, and is long in service life, capable of simultaneously processing various waste liquids and high-viscosity waste liquids, and good in combustion effect.

The embodiment of the invention provides a partitioning method and device and a storage medium. In the embodiment of the invention, the ground three-dimensional point cloud data in the operation areaof the self-mobile equipment is collected, the ground feature information is identified based on the ground three-dimensional point cloud data, and the operation area is partitioned based on the ground feature information. The ground three-dimensional point cloud data with relatively high precision is used. The operation area can be partitioned more accurately, so that the autonomous mobile equipment can execute the operation task more flexibly and conveniently based on the partitions, the range of the operation partitions can be smaller and more accurate, the flexibility, efficiency and/or quality during operation task execution can be improved, and the task execution effect is improved.

The invention relates to a self-reset electric ball valve. The self-reset electric ball valve comprises an executor and a valve body assembly connected with the executor. The executor comprises an execution motor and a controller capable of controlling the execution motor to act. The self-reset electric ball valve further comprises a standby power supply arranged in the executor, and the controller controls the standby power supply to provide electricity for the execution motor when an external power supply is switched off. Since the standby power supply is arranged in the self-reset electric ball valve, one-to-one correspondence between the standby power supply and the self-reset electric ball valve is achieved; damage to the standby power supply in the self-reset electric ball valve cannot affect work of other self-reset electric ball valves, so that the influence range of the broken-down standby power supply is effectively narrowed. In addition, the standby power supply is arranged in the self-reset electric ball valve, any change of an external power supply circuit of the self-reset electric ball valve is not needed, and therefore the wiring difficulty is effectively reduced. The invention further discloses a control method of the self-reset electric ball valve.

A pesticide composition includes at least one biologically inert carrier; and at least one ferrite or at least one doped component including at least one fixed copper compound doped with at least one compound selected from the group consisting of iron compounds, zinc compounds, magnesium compounds, calcium compounds, and combinations and/or mixtures thereof. In one embodiment, the doped component has a particle size of about 0.5 nm to about 30 microns. A method for the control of pests includes the step of applying to the pests or their growth habitat the aforementioned composition. The method also includes the control of fungal and other diseases in banana plants, by applying the aforementioned composition to their growth habitat in banana plant groves.

The invention discloses a text template obtaining method. The text template obtaining method comprises the steps of judging whether a matched text template exists in a text template database or not according to received keywords; if yes, retrieving the database according to the keyword to obtain a corresponding text template; and if not, obtaining target description information according to the keyword, and performing text template generation processing according to the target description information to obtain a text template. By retrieving the text template database, the retrieval range is smaller, retrieved data is more accurate, searching in a large range is avoided, and the text template obtaining efficiency is improved. The invention further discloses a text template obtaining device,text template obtaining equipment and a computer readable storage medium which have the above beneficial effects.

The embodiment of the invention provides a memory allocation method and device and a readable storage medium, and the method comprises the steps: obtaining the size of an applied memory, and carryingout the memory allocation based on a modified DPDK idle chain table according to the size of the applied memory, wherein the modified DPDK idle linked list is obtained by increasing the number of theDPDK idle linked lists based on a preset index, and the memory intervals of the idle linked lists are the same. By modifying the number of the DPDK idle linked lists, the interval range of the DPDK idle memory linked lists is reduced, meanwhile, the lock conflict probability when multiple CPUs apply for the memory at the same time is greatly reduced, and therefore the memory allocation speed is better increased.

A robotic device for operation in association with an appendage of a user, wherein the appendage of the user has an endpoint, the robotic device comprising: a base; and a robotic arm attached to the base and having an end-point, the robotic arm having at least two active degrees of freedom relative to the base and being configured so that when the base is appropriately positioned relative to a user, the reference frame of the robotic device is oriented generally similarly to the reference frame of the user and motions of the endpoint of the appendage of the user are mimicked by motions of the endpoint of the robotic arm.

The embodiment of the invention discloses a user identity recognition method and device and electronic equipment, and the method comprises the steps: obtaining to-be-recognized first biological feature information and second biological feature information; comparing the to-be-recognized first biological characteristic information with each piece of first registration biological characteristic information; determining a candidate user identity information set and a corresponding candidate second registration biological characteristic information set, wherein each piece of user identity information in the candidate user identity information set has corresponding first registration biological characteristic information and second registration biological characteristic information; and comparing the to-be-recognized second biological characteristic information with each piece of second registration biological characteristic information in the candidate second registration biological characteristic information set, so that the target user identity information can be determined from the candidate user identity information set, and the user identity can be reliably and efficiently identified.

The embodiment of the invention discloses a song recommendation method and device. The method comprises the steps of firstly obtaining a historical song playing sequence of a target user; according tothe position information of songs in the historical song playing sequence, screening the songs in the historical song playing sequence to obtain short-time songs and long-time songs; screening the short-time songs by using a preset first screening condition to obtain a first song sequence, screening the long-time songs by using a preset second screening condition to obtain a second song sequence,and recommending the songs in the historical song playing sequence according to the first song sequence and the second song sequence. According to the song recommending method and device, the songs possibly repeatedly listened by a user are recommended from the historical song playing sequence of the user through artificial intelligence, the nostalgic psychology of the user is considered, and theaccuracy of a song recommending result is improved, that is, the accuracy of the song recommending result is improved, the use experience of the user is improved, and the user viscosity is enhanced.

The invention discloses an intelligent optical active adjustment method based on a point spread function. The method comprises the following steps: S1, testing and determining a system misalignment range; s2, acquiring and recording a point spread function in a current installation and adjustment state; s3, determining ellipticity change of the point spread function in different view fields according to a point spread function ellipticity calculation algorithm; s4, obtaining the current ellipse rate and the Zernike coefficient of the parameter thereof, and forming an input and output data pair with a corresponding relation with the current misalignment amount; s5, building a data set composed of the Zernike coefficient and the misalignment amount according to a neural network algorithm, and obtaining a to-be-trained data set conforming to standard normal distribution; and S6, building a double-layer artificial neural network, and determining the range of each hyper-parameter of the neural network according to the sensitivity of each hyper-parameter of the neural network. According to the method for calculating the device misalignment and the primary mirror deformation by using the focal plane point spread function, the system hardware complexity is reduced, the calculation precision of the system misalignment amount/the primary mirror deformation amount is improved, and the adjustment process of an optical system is assisted.

A pesticide, fungicidal, bactericidal, anti-pathogen or biocidal composition includes at least one biologically inert carrier; and at least one ferrite or at least one doped component including at least one fixed copper compound doped with at least one compound selected from the group consisting of iron compounds, zinc compounds, magnesium compounds, calcium compounds, and combinations and/or mixtures thereof. In one embodiment, the doped component has a particle size of about 0.5 nm to about 30 microns. A method for the control of pests includes the step of applying to the pests or their growth habitat the aforementioned composition. The method also includes the control of disease in citrus plants caused by vectors such as Psyllid nymphs, by applying the aforementioned composition to their growth habitat in citrus groves.

The invention belongs to the technical field of task layout method for embedded software and hardware co-design, In particular, it relates to a reconfigurable task layout method based on area first and dynamic genetic algorithm. The method includes initializing task layout scheme set, including managing idle area and layout of task module. Before task module layout, idle area is managed. Dynamic stochastic genetic algorithm (DSGA) is used to solve the optimal task layout. Dynamic stochastic genetic algorithm (DSGA) adopts random crossover strategy, and dynamic factors dynamically change the crossover probability and mutation probability of the population according to the evaluation index of the current population in the iterative process to select the individuals with adaptive constraints.The global optimal layout scheme is evaluated and the global optimal solution is output. The invention is applicable to a large-scale task layout model of a network-on-chip reconfigurable system witha forbidden area, and can effectively improve the quality of the layout scheme and the system performance.

A robotic device for operation in association with a body of a user, wherein the body of the user comprises a torso and a limb, the robotic device comprising: a base; an arm having a first end and a second end, the first end of the arm being mounted to the base; an endpoint device having a first end and a second end, the first end of the endpoint device being mounted to the second end of the arm; and a grip configured to be gripped by a limb of a user, wherein the grip is mounted to the second end of the endpoint device, and further wherein the grip is adjustable relative to the endpoint device along a pitch axis, a yaw axis and a roll axis.