39results about How to "Avoid serious distractions" patented technology

Medical devices having one or more rotatable linkable components or segments, delivered in a first orientation relative to a component guide into a tissue cavity, such as the interbody vertebral space. After delivery, each segment may be rotated to a second, different orientation relative to the component guide, such as into a permanent vertical standing position. The segments achieve maximum distraction of the cavity space such as adjacent vertebra end plates, while using a minimal invasive surgical (MIS) approach. When the segments are tightened in place, the device provides long-term stability. The device can be used as a distraction instrument and / or permanent implant that can be used for interbody fusion, nuclear replacement, or anywhere in the body where a stable distraction of tissue and / or the implantation of material such as a device with an MIS approach is desired.

An expandable intervertebral fusion implant includes a pair of shells having mating surfaces which resist shifting when the parts are assembled. The shells have opposed legs provided with teeth which permit the shells to be ratcheted outward in a non-parallel fashion after they have been placed between spinal elements.

An expandable device is positioned surgically between spinous processes, permitting the incremental distraction of posterior spinal elements when the device is filled with a hardenable material.

A time division duplex wireless communication system based on Code Spreading-Orthogonal Frequency Division Multiple Access (CS-OFDMA) and a smart antenna includes: an antenna array and multichannel transceiver, a space processor, a demodulator, an L2 processor and a modulator. The CS-OFDMA system provided by the present invention combines synchronous CDMA technique and OFDMA technique, overcomes the severe ISI caused by spectrum-spreading by the conventional CDMA system while transmitting wideband data, effectively counteracts frequency-selective fading and inter-cell interference, and is beneficial to reliable transmission of narrowband voice and wideband data and also beneficial to co-frequency networking.

The invention relates to a non-magnetic low vibration coaxial pulse tube refrigerating machine wherein the pulse tube and the cold accumulation device are in coaxial arrangement, between which cold accumulation stuffing is filled, an arched flow diverter is arranged on an extending section and the end portion, closely spaced vertical through-holes are arranged on the arched portion, vertical grooves are arranged evenly circular ring external wall, the cover type cold end heat exchanger covers the groove and packs by bonding, the horizontal split cold platform supported by the support rod and fixed on the hot end flange vertically are arranged on the cold end heat exchanger, the cold platform and cold end heat exchanger are connected by flexible heat guide band, the coupling channel under the throttle holes are connected to phase modulation capillary.

The invention discloses a device applied to a rectangular micro-strip millimeter-wave radar sensor, and belongs to the technical field of millimeter-wave radar sensors. The device comprises that Xn first series feed micro-strip antennae are correspondingly arranged in M lines of millimeter-wave series feed transmitting antenna arrays, and each first series feed micro-strip antenna is connected with the transmitting end of a millimeter-wave radar chip; Yn second series feed micro-strip antennae are correspondingly arranged in W lines of millimeter-wave receiving series feed antenna arrays; andeach second series feed micro-strip antenna is connected with the receiving end of the millimeter-wave radar chip. The W lines of millimeter-wave receiving series feed antenna arrays and the M lines of millimeter-wave series feed transmitting antenna arrays are arranged on the same layer of a printed circuit board, are cooperated or are independently taken as the transmitting antenna arrays and also as the receiving antenna arrays. By use of the device, the technical effects that the transmission of disturbed millimeter-wave signals is avoided and the millimeter-wave radar sensor can be manufactured on the same layer of printed circuit board can be achieved.

The invention provides an LED (light emitting diode) street lamp communication system and a security control method of the LED street lamp communication system. A bridging security control module is added between an LED street lamp control terminal and an LED control system server, communication security control measures can be taken when the LED street lamp control terminal is communicated with the LED control system server, the state parameters of an LED street lamp are encrypted and decrypted mainly through an information processing unit, the operation conditions of the LED street lamp are tracked, recorded and analyzed through a security log tracking unit, and when an abnormity detecting unit finds an abnormal condition, an abnormity warning unit gives a warning to the LED control system server in time. The content correctness of data transmitted between the LED control system server and the LED street lamp control terminal is guaranteed, the LED lamp street can be prevented from being interfered by error instructions under the condition that passwords are cracked, and various work relevant parameters of the LED street lamp are enabled to be in the normal work range.

A method and system for incorporating voice commands into the interactive process of image segmentation. Interactive image segmentation involves a user pointing at an image; voice commands quicken this interaction by indicating the purpose and function of the pointing. Voice commands control the governing parameters of the segmentation algorithm. Voice commands guide the system to learn from the user's actions, and from the user's manual edits of the results from automatic segmentation.

The invention discloses a support method for an aircraft model in a wind tunnel experiment. The method includes the following steps: 1) a wind tunnel and an aircraft model in the wind tunnel are connected and fixed through a spatial rod system, and the wind tunnel is not in direct contact with the aircraft model; and 2) according to requirements of experimental measurement and support system design, the diameter, length, number, material and spatial distribution form of support rods in the spatial rod system are adjusted, thereby realizing optimization of rigidity of an aircraft model supportsystem. By adoption of the support method provided by the invention, the support system further adapts to and meets the requirements of wind tunnel experiment content and measurement, thereby achieving the purpose of improving precision and reliability of pneumatic experiment data, and effectively solving the problems of insufficient rigidity, large flow field interference and complicated system internal force of a support system in a traditional support method, and the support method provided by the invention has obvious advantages and potential of innovative development in the aspect of a wind tunnel experiment, particularly in the aspect of a full-size large-model pneumatic experiment.

A method and system for incorporating voice commands into the interactive process of image segmentation. Interactive image segmentation involves a user pointing at an image; voice commands quicken this interaction by indicating the purpose and function of the pointing. Voice commands control the governing parameters of the segmentation algorithm. Voice commands guide the system to learn from the user's actions, and from the user's manual edits of the results from automatic segmentation.

The invention provides a rapid detecting device of heavy metal arsenic. The rapid detecting device comprises a first pre-treatment module, a second pre-treatment module, a color developing module and a comparative analysis module, wherein pentavalent arsenic is reduced into trivalent arsenic in the first pre-treatment module under an acidic condition by using a reducing agent; the trivalent arsenic is reduced into arsenide hydrogen gas by using a reducing agent in the second pre-treatment module; the arsenide hydrogen gas is enabled to be in contact with test paper dipped by mercury bromide in the color developing module so as to display brown color spots; the comparative analysis module is used for comparing by utilizing a photometer so as to complete detection. The rapid detecting device provided by the invention is high in sensitivity, small in error and strong in anti-jamming capability.

The invention discloses a method for fast identifying a building image on the basis of morphology. The method fully utilizes a morphological characteristic, different from those of other natural objects, of a building and is used in a building image fast identifying system. After image object contour tracking and linear simplification interference-removing processing is performed, whether the building exists in an image is fast and accurately determined by a horizontal and vertical topological relation of the building. Thus, the building is identified.

The application relates to an antenna unit, an antenna array and an antenna. The antenna unit includes a metal ground layer, a dielectric substrate and an antenna cell unit; the metal ground layer andthe antenna cell unit are respectively disposed on two opposite surfaces of the dielectric substrate; the antenna cell unit has a parallelogram shape, and the antenna cell unit is disposed in a 45-degree polarization manner; the long side and the short side of the antenna cell unit are two adjacent sides; and at least one short side of the antenna cell unit is provided with a radiating element. The antenna can reduce interference and can improve the detection performance of the radar when the vehicle is in use.

The invention provides a millimeter wave pure analog beamforming user scheduling method. The method comprises the following steps: S1, enabling a channel of a k-th user side to adopt a Rician channelmodel hk; S2, enabling a base station end to adopt an equidistant linear array antenna, and calculating an antenna array response vector alpha(theta) with an departure angle theta; S3, supposing thatthe base station has K*1 original signal s to be sent to K clients, and calculating a shared amplitude weighted analog beam forming matrix FRF; S4, conducting service user selection through a heuristic user scheduling method; S5, designing a shared amplitude weight; and S6, designing a k-th column fk of the first-stage analog domain precoding matrix F. The user scheduling mode is applied to a pureanalog domain beam forming technology, interference among multiple users is greatly reduced in a multi-path sparse scene, and the inherent defect that a pure analog beam forming scheme is not suitable for multi-user communication is overcome; only the departure angle of the downlink path of each user is needed, the path coefficient of the channel is not needed, only little channel information isneeded, and the training overhead is greatly reduced.

The invention discloses an SDN segmented routing defense method for link flooding attacks. The SDN segmented routing defense method comprises the following steps: for a given network topology, constructing the given network topology into a directed graph-based network model, and obtaining an entity flow set, capacity and flow load of a link; monitoring the network model constructed in the step (1)by using an SDN-based system defense model; judging whether the network model is attacked by the LFA and the link is seriously congested or not, and if so, performing segmented routing on the networktopology by utilizing the SDN controller and the entity flow set, the capacity and the flow load of the link; otherwise, continuously monitoring and the like. According to the SDN segmented routing defense method provided by the invention, when the link flooding attack defense is carried out, the congestion load of the attacked link is defibered by utilizing the segmented routing strategy of theSDN, so that a large amount of resource consumption possibly caused by global routing can be avoided, and the link congestion is relieved, and the effective defense of the link flooding attack is achieved.

The invention discloses a lampblack monitoring self-adaptive front-end gas inlet system which comprises a gas chamber, a first temperature and humidity sensor, a second temperature and humidity sensor, a driving circuit, a single chip microcomputer, a gas pump, a gas drying device, a gas heating and cooling device, a metal filter screen and an alarm. The air chamber is of a central symmetry structure; the air pump comprises an air inlet pump arranged between the air inlet and the first temperature and humidity sensor and an air outlet pump arranged between the second temperature and humidity sensor and the air outlet; the metal filter screen is fixed on the inner wall of the gas chamber, the gas drying device is arranged in the gas chamber, and the gas heating and cooling device, the single-chip microcomputer, the alarm and the driving circuit are arranged on the periphery of the gas chamber. According to the invention, self-adaptive dehumidification, heating or cooling of oil smoke is realized through a PID control algorithm, and severe interference of temperature and humidity on a subsequent test result of the oil smoke detection probe is avoided. Error of the system can be known through alarm of the alarm, and loss of a restaurant caused by abnormal test results is reduced.

The invention discloses a device and a method for measuring water turbidity degree by utilizing a water sound attenuating frequency spectrum. The device comprises a circuit box, display equipment, cables, a transmitting energy converter, a receiving energy converter, an ellipsoidal cavity and a T-shaped passage, wherein the circuit box is respectively connected with the transmitting energy converter and the receiving energy converter through the cables; the T-shaped passage is arranged in the ellipsoidal cavity; the transmitting energy converter and the receiving energy converter are respectively positioned at two focal points of the ellipsoidal cavity; the cables are arranged in the T-shaped passage; both transverse ends of the T-shaped passage are provided with sealing pieces; the transmitting energy converter and the receiving energy converter are respectively arranged at the both transverse ends of the T-shaped passage, and the vertical end of the T-shaped passage is connected to the bottom end of the ellipsoidal cavity and is provided with a wire hole used for educing the cables. The invention enhances the precision of turbidity degree measurement, adopts the ellipsoidal cavity and respectively places the transmitting energy converter and the receiving energy converter at the two focal points of an ellipsoid to achieve same transmission paths of water sounds, thereby overcoming the multipath time-delay effect.

The invention provides a data packet scheduling method and device. The method comprises the steps: determining whether a service cell and an adjacent cell carry out the high-priority guarantee serviceor not in any scheduling period when a to-be-scheduled data packet is a big data packet insensitive to time delay; if it is determined that the serving cell carries out the high-priority guarantee service and the neighbor cell carries out the high-priority guarantee service, determining whether the neighbor cell is in a medium-high load state or not; when it is determined that the neighbor cell is in a medium-high load state, buffering the to-be-scheduled data packet, and determining whether to schedule or not in the next scheduling period; and when it is determined that the neighbor cell isnot in the medium-high load state, scheduling the to-be-scheduled data packet in the current scheduling period. According to the method, interference to the neighbor cell can be avoided during large data packet scheduling insensitive to time delay.

The invention provides a stepless adjustable active DTV digital television amplifier with display and timing functions. The amplifier is connected between an antenna and a coaxial cable, aims to adjust the amplification factor of the amplifier and detect and display the amplification factor of the amplifier, and is characterized by comprising an LNA amplification unit, an electrodeless adjustmentunit and a gain detection and display unit; the LNA amplification unit is provided with a source end, a radio frequency input end and a radio frequency output end, the source end is connected with a direct current source, the radio frequency input end is used for being connected with an antenna, and the radio frequency output end is used for being connected with a coaxial cable; the stepless adjusting unit comprises a potentiometer connected with a direct current source, and the output end of the potentiometer is connected to the source end of the LNA amplifying unit so as to provide bias voltage. The gain detection and display unit comprises a control chip, a display drive circuit and a display screen, and the control chip is connected to the stepless adjustment unit to collect real-timevoltage and display the magnification times corresponding to the real-time voltage on the display screen.

The invention relates to a system and a method for transferring multimedia broadcasting service. The system comprises a control center, at least one mutually separate synchronous transmission unit and user equipment, wherein each synchronous transmission unit comprises a main service wireless network controller, a standby service wireless network controller and at least one drifting wireless network controller. The method includes the steps that the main service wireless network controller detects the self working state; the main service wireless network controller and the standby service wireless network controller corresponding to the main service wireless network controller are shifted when a failure happens; and the standby service wireless network controller builds up a bearing relationship and substitutes the main service wireless network controller to process and send the content of the multimedia broadcasting service. The system and the method can be widely applied to a generation three mobile communication system.

The embodiments of the invention disclose a complex environment-based voice signal positioning method, device and system. The method includes the following steps that: echo cancellation processing isperformed on at least two paths of expected signals according to loudspeaker reference signals, so that at least two paths of first residual signals are acquired; echo suppression processing is performed on each path of first residual signals of the at least two paths of first residual signals according to a preset echo suppression transfer function, so that at least two paths of second residual signals can be obtained; noise suppression processing is performed on each path of second residual signals of the at least two paths of second residual signals according to a preset noise suppression transfer function, so that at least two paths of third residual signals are obtained; and when it is determined that ambient sound is in a voice state at present according to the at least two paths ofthird residual signals, voice signals in an environment are located. In this way, the interference of non-target speech state signals on sound source positioning is reduced, the accurate positioning of a sound source is realized, and the robustness of the positioning of the sound source is improved.

The invention discloses a method which aims at implementing capacity planning over different machine types to OLTP applications and includes: executing flexibility evaluation of the OLTP application to determine whether the OLTP application has flexibility problem; if the method determines that the OLTP application does not have flexibility problem, a performance comparison test is executed amongdifferent machine types to acquire the running performances of the different machine types; computing performance ratio among the different machine types according to the acquired running performances of the different machine types; acquiring the performance values of various machine types in different series, which is necessarily based on the performance ratios among different machine types acquired from the performance comparison test, and the acquired performance values are input into a parameter database for capacity planning, consequently a new parameter database for capacity planning isformed, and performance comparison and performance prediction can be implemented over different machine types; furthermore, the new parameter database for capacity planning can be used by a modeling method for capacity planning and a capacity planning tool to implement capacity planning over different machine types which aims at the OLTP application.

The invention discloses a preparation method of a reusable solid-phase extraction material based on beta-cyclodextrin, which comprises the following steps: reacting beta-cyclodextrin, benzene-containing halide, carbonate and initiator in an organic solvent under nitrogen conditions, pickling, washing with water, washing with a solvent, and drying to obtain the beta-cyclodextrin polymer used as thesolid-phase extraction material. The method is simple in process and low in cost; the obtained solid-phase extraction material can be used for selective separation and enrichment of target objects inenvironmental samples, consumer goods and industrial products, serious interference of matrixes can be avoided, the problem of inaccurate measurement caused by too low content of the target objects and incapability of reaching sensitivity of instruments in current detection work is solved, and the material can also be repeatedly used.

The invention discloses an interference control and coordination method for direct communication of terminals in a cellular and dimension to dimension (D2D) hybrid network. The method comprises the following steps that: (1) a base station counts and calculates uplink transmission resource of each cellular user equipment (CeUE) and D2D communication expected interference limit which can be borne by the uplink transmission resource, and periodically updates the interference limit; (2) the base station obtains an expected UE resource-interference table formed by the D2D communication expected interference limit which can be borne by the uplink transmission resource of the CeUE according to the acquired interference control and coordination information and scheduling information and sends the expected UE resource-interference table to D2D UE; and (3) the D2D UE flexibly executes a resource management decision according to the UE resource-interference table to avoid causing strong interference to cellular uplink communication. The expected interference limit is periodically updated, so changing interference conditions can be overcome and real-time quality requirement of service transmission can be met. The base station regulates and updates calculating parameters of the expected interference limit, and a network operator can control the interference generated by the D2D UE and balance average performance between a cellular system and a D2D system.

The invention provides a rapid detecting device of heavy metal arsenic. The rapid detecting device comprises a first pre-treatment module, a second pre-treatment module, a color developing module and a comparative analysis module, wherein pentavalent arsenic is reduced into trivalent arsenic in the first pre-treatment module under an acidic condition by using a reducing agent; the trivalent arsenic is reduced into arsenide hydrogen gas by using a reducing agent in the second pre-treatment module; the arsenide hydrogen gas is enabled to be in contact with test paper dipped by mercury bromide in the color developing module so as to display brown color spots; the comparative analysis module is used for comparing by utilizing a photometer so as to complete detection. The rapid detecting device provided by the invention is high in sensitivity, small in error and strong in anti-jamming capability.

The invention discloses a same-frequency full-duplex scheduling method and device, wherein the method includes: calculating the priority value of downlink users according to a scheduling algorithm, and allocating resources to certain downlink users; Find the uplink user with the sum of the highest priority value on the resource and the determined downlink user, and obtain the sum of the highest priority value; traverse other downlink users on the resource, and select the user with the highest priority among the determined downlink user and other downlink users Uplink and downlink user combinations of the sum of level values. The present invention considers the interference of uplink users to downlink users and according to the proportional fairness principle of downlink and uplink, selects the user combination with the largest sum of uplink and downlink PF values, and effectively overcomes the interference of uplink signals to downlink signals in the same-frequency duplex transmission process. severe interference, ensuring the transmission quality of uplink and downlink data.

The invention discloses a data sending method and a data sending device, which are used for solving the problem of low data sending accuracy in the prior art. The method comprises the following steps that: if a power frequency current is determined to be in an increased state, a sending end selects a sub-time period, from a time period in which the power frequency current is increased from a first current threshold value to a second current threshold value, and sends the data; or if the power frequency current is not determined to be in the increased state, the sending end selects the sub-time period, from the time period in which the power frequency current is decreased from the second current threshold value to the first current threshold value, and sends the data, wherein absolute values of the first current threshold value and the second current threshold value are smaller than a peak value of the power frequency current, and the absolute value of a difference value between the absolute values of the first current threshold value and the second current threshold value and the peak value of the power frequency current is greater than a determined threshold value. In the embodiment of the invention, because the absolute values of the first current threshold value and the second current threshold value are smaller than the peak value of the power frequency current, interference generated by other electric appliances when the power frequency current is at a peak or a valley can be avoided by sending the data in the selected sub-time period, so that the data sending accuracy is improved.

The invention discloses a seismic attenuation estimation method, system, equipment and storage medium based on sparse S transformation and adaptive logarithmic spectral ratio method, belonging to the research field of exploration geophysics. The invention uses sparse S transformation to solve the time spectrum of seismic data , compared with the traditional S transform, the time spectrum energy is more concentrated, which is beneficial to improve the accuracy of the Q value estimated by the logarithmic spectral ratio method; the present invention introduces an adaptive frequency band selection method, which avoids the artificial influence that may be caused by manually selecting the frequency band range. , which improves the reliability of the Q-value estimation results. Secondly, the invention uses sparse S transform, which has a certain inhibitory effect on noise, which makes it possible to avoid serious interference of noise when extracting the spectrum at the upper and lower layers of the target area and use the logarithmic spectral ratio method to estimate the Q value, and improves the Noise immunity of Q-value estimates.