1497 results about "Pass rate" patented technology

A transparent/ translucent flame redardant composition comprises a uniform blend of a miscible resin blend of a polycarbonate resin and a cycloaliphatic polyester resin wherein the composition has at least a 80% pass rate in 10 test specimen in the Norme Francaise NF-P-92-505 flammability test of L'Association Francaise de Normalisation using test specimens with weight between about 1.0 to about 6.0 kilograms per square meter.

System method and program for controlling access to a VLAN via a port of a VLAN switch system. In response to receipt of a message packet at the port, the switch system determines if a MAC address of the packet matches a MAC address for which the port has been programmed to recognize as a MAC address of a device authorized to communicate with the port. The MAC address of the packet does not match a MAC address for which the port has been programmed to recognize as a MAC address of a device authorized to communicate with the port. In response, the switch system blocks the packet if a rate of ill-formed packets and/or packets from an unrecognized MAC address exceeds a threshold pass rate. The threshold pass rate can be adjusted based on the rate of change of receipt of ill-formed packets and/or packets from an unrecognized MAC address.

The invention provides a face recognition method and a device based on a dynamic threshold value. The method comprises a face recognition step, a cluster characteristic obtaining step, a category determining step and a judgment step, wherein the face recognition step is used for matching a face picture to be recognized with a preset formwork face picture to determine the formwork face picture with a highest similarity with the face picture to be recognized and determine a similarity score. The cluster characteristic obtaining step is used for respectively extracting scene characteristics of the face picture to be recognized and scene characteristics of the formwork face picture with the highest similarity with the face picture to be recognized and combining the similarity score to generate cluster characteristics. The category determining step is used for inputting the cluster characteristics to a preset scene category model to determine the scene category of the cluster characteristics. The judgment step is used for selecting the preset threshold value corresponding to the scene category, and judging the face recognition to be successful if the similarity score is larger than the threshold value. The problem of determining the threshold value is solved under the unrestraint scene, and at the same time, passing rate of the face recognition is enhanced.

The invention provides an intelligent traffic signal control system considering the safety of cross-street pedestrians; the intelligent traffic signal control system comprises inductance coil detectors, video detectors, a traffic signal controlling machine and signal lamps; a two-phase total-inductive control mode is adopted in a road crossing; the two inductance coil detectors are embedded in each inlet lane, wherein the main inductance coil detector is embedded at a stop line of the inlet lane and is used for detecting traffic flow of a road section; the auxiliary inductance coil detector is embedded at the possible maximum queuing part of an advanced position of the main inductance coil detector and is used for assisting the main inductance coil detector to detect motor vehicles; pedestrian cross-street waiting areas at two ends of each pedestrian crossing are respectively provided with the video detector for detecting flow of crossing pedestrians; the traffic signal controlling machine carries out data exchange with the main inductance coil detector, the auxiliary inductance coil detector and the video detectors by data lines and simultaneously controls the signal lamps positioned at the pedestrian crossing and the road crossing by the data lines. According to the intelligent traffic signal control system, the safety and the passing efficiency of the cross-street pedestrians can be realized, and the passing rate of the motor vehicles is ensured.

The invention relates to a traffic light adjustment method and device, and the method comprises the steps: obtaining the flow information of a traffic intersection, wherein the flow information comprises at least one of the number of pedestrians waiting to pass at a zebra crossing, the waiting time of the pedestrians, the number of vehicles waiting to pass on lanes, and the waiting time of the vehicles; and adjusting the display of the red and green lights of the traffic intersection according to the flow information. Through the technical scheme of the invention, the method and device adjust the red and green lights according to the number of pedestrians and the number of vehicles, can reduce the waiting time of the pedestrians and vehicles, improve the passing rate of the pedestrians and vehicles, and improve the user experience.

The invention discloses a method for positioning a mold core and a mold shell of a hollow blade, which belongs to the technical field of aero engines and combustion gas turbines. The expansion section of a blade tip is provided with a blade tip positioning point; the expansion section, wherein the blade tip positioning point is, of the blade tip serves as a fixed end and a surface direct contact is adopted; an exhaust side is coated with a free end, two positioning points are made on the free end, the mold core and the mold shell adopt point contact at the positions; an expansion section of tenon teeth also adopts point positioning; two tower type positioning points are made on the expansion section of the tenon teeth, and point direct contact is adopted; and a mold core blade basin and a blade back adopt the same positioning method and the positioning positions are symmetric. The method of the invention is a breakthrough of the traditional positioning method in the same industry in China and has the advantages that: operation in production is simple and convenient; the processing period of the blade casting is shortened; and the quality, qualification rate and production efficiency of the casting are improved. Production and test work proves that the blade casting produced by using the positioning method has the advantage that core deflection and breakage conditions are greatly reduced in a casting process.

An automatic spraying printing and synchronous detection and tracking device includes: transmission module, spraying printing module, detection module and control module with tracking unit. The transmission module transmits many to be spraying-printed elements to the spraying printing module and the detection module sequentially, and the spraying printing module and the detection module spraying-prints and detects the passing to be spraying-printed elements in synchronous mode sequentially. In addition, the tracking unit can be used for recording production (curriculum vitae) information of the spraying-printed elements on subsequent production line. So the traditional production costs are significantly reduced and the speed and pass rate of synchronous spraying printing and detection are improved.

The invention relates to a visible molding technique more exactly a 'able to be seen' molding technique. The invention begins with adopting calculating the coagulating and mould filling process by numerical simulation techniques to forecast and reduce (or even eliminate) the normal abscess, rarefaction, heat cracking and other defects on the molding; and then real-time monitor the molding filling and coagulating process with three-dimensional X-rays to penetrate the metal liquor movements in mould cavity directly sighting the air pores, inclusion and other defects which is unforeseen by simulation; finally by integrating the simulating and observation, optimize the pouring system design so to produce the final fine moldings. The invention provides the china molding industry with a visible molding technique which achieves power and consumption saving, alleviating the pressure on environment and resource short, increasing the molding passing rate and technical product rate, lower the processing recess and being close to final product. It is adapted to molding processes of normal sand mould molding, accurate molding of different alloy and size.

The invention discloses a method and system for detecting abnormal sounds. The method includes the steps that short-time energy of each frame of a collected audio signal is compared with a first short-time energy threshold value, if the short-time energy is larger than the first short-time energy threshold value, the corresponding frames are recorded to be first-grade frames, if the short-time energy is smaller than the first short-time energy threshold value, the short-time energy of each frame of the collected audio signal is compared with a second threshold value or the zero-crossing rate of each frame of the collected audio signal is compared with a zero-passing rate threshold value, the frames with the short-time energy larger than the second short-time energy threshold value or the zero-passing rates larger than the zero-passing rate threshold value are recorded to be second-grade frames, and when the number of the continuous frames which are the first-stage frames or the second-stage frames is larger than N and the current frame is the first-stage frame, it is judged that the sounds are abnormal. By means of the method, the abnormal sounds are judged by calculating the short-time energy and the zero-passing rates; as the short-time energy and the zero-passing rates belong to the time domain characteristics and are not related to frequency domain conversion and characteristic parameter calculating, the calculating complexity can be lowered. Meanwhile, as audio information collected in real time is processed, real-time processing and real-time analysis can be carried out, and abnormality can be judged in time.

The invention belongs to the technical field of nuclear radiation detection and nuclear electronics, and relates to a nuclear radiation pulse accumulation signal judging and correcting method based on high-speed digital sampling. The method includes the steps of pulse accumulation judgment and pulse accumulation correction and specifically includes the steps of judging pulse accumulation, conducting differential on signals, judging the accumulation type, correcting pulse accumulation, calculating pulse waveform parameters, conducting cutting and correcting accumulated pulses. Compared with the prior art, the method has the advantages that the digitalization method of pulse accumulation judgment is set up, complex hardware equipment in a traditional spectrometer is abandoned, differential and analysis are conducted on collected output pulses through the digitalization method so that the current changes of the pulses can be formed, the method is simple and clear, the physical meaning is clear, the accumulation type can be accurately judged, the correction of pulse accumulation can be conducted, the use ratio of the signals can be effectively improved, energy resolution losses caused by pulse accumulation can be reduced, and meanwhile the pulse passing rate of a system is improved to the largest extent.

The invention discloses a submerged arc welding method of plank boards and jointing boards, which is characterized in that through steps of reasonable welding material selection, strict pre-welding preparation, scientific pre-welding preheating, welding process and welding technology, the welding quality of submerged arc automatic welding of plank boards with the thickness of 25mm to 45mm is controlled. The pass rate of welding seams by shooting once reaches 100 percent, and welding distortion is controlled ideally. The mechanical property of a welding joint meets standard requirements, and ensures the quality of products.

The invention relates to an evaluation and problem recommendation system for individualized education, and discloses a data mining module and system. According to the data mining module and system, the ability (pass rate) of a student for solving problems can be accurately predicted. On the basis of prediction on the pass rate of the student for the problems and knowledge points, a recommendation system for recommending problems in an individualized mode is built, and the recommendation system can differentiate the strong level, the medium level and the weak level of the students.

The invention relates to a copper and stainless steel brazing process, which is characterized by comprising the following steps of 1) processing before brazing; 2) assembling joints; 3) adding brazing filler metal and brazing flux; 4) brazing; and 5) processing after brazing. Since silver-base brazing filler metal is replaced by copper-base brazing filler metal in the process, manufacturing cost is reduced and noble metal resources are saved greatly. Brazing is realized in the air without protective gas so that expenses for consumption of nitrogen gas, argon gas and the like are reduced. Due to the fact that the technology of brazing in a protective gas furnace or vacuum furnace is replaced by the technology of brazing by induction heating, electric power is saved. Accordingly, the copper and stainless steel brazing process is reliable, requires short production time, enables pass rate to be high, saves energy sources and is suitable to be used for batch production.

The invention discloses a digital logarithm gamma energy spectrometer, which comprises a NaI crystal, a photomultiplier, a high-voltage power supply module, a preamplifier, a logarithmic amplifier, a gain-programmed amplifier, an anti-aliasing active filter, a high-speed analog-digital converter (ADC) and a CPLD programmable logic device, wherein the logarithmic amplifier performs logarithmic operation on received nuclear pulse signals to acquire a high energy section spectral line and a low energy section spectral line; the high-speed analog-digital converter (ADC) performs analog-digital conversion on filtered signals; and the CPLD programmable logic device realizes pulse amplitude analysis, baseline restoration and filtering de-noising to digital signals, and obtains information on corresponding nuclear pulse peak values. The logarithmic amplifier performs logarithmic compression on the nuclear pulse signals to ensure the resolution of the high energy spectral line and the low energy spectral line; and the high-speed analog-digital converter and the CPLD programmable logic device are adopted to realize a digital energy spectrometer and ensure the high counting pass rate and the energy resolution of the energy spectrometer.

The invention discloses an identity recognition method for remote account opening. The identity recognition method comprises the following steps that account opening application personal information inputted by a user through a client side is acquired and user information scanned by the client side is received; when the account opening application personal information and the user information are consistent, a user face image photographed by the client side through starting a camera is acquired and the user face image is compared with a target image and identified, and a similarity score is calculated through combination of a live detection technology; and when the similarity score is within a first preset range, a video conversation mode with the client side is started, the target image is updated and a high-definition image database is established so that the user face image is enabled to be identified through comparison with the updated target image when the user face image is acquired again. The invention also discloses a server and a system. Passing rate of remote account opening of the user can be enhanced so that user experience can be enhanced.

The invention belongs to the field of sewage treatment and provides a short distance denitrifying dephosphatation double-sludge technique taking granular sludge as medium and a device thereof. The device sequentially comprises a raw water pipe, a water inlet tank and a water inlet valve, and is characterized by further sequentially comprising an anaerobic/anoxic SBR reactor and an intermediate water tank which are connected with each other by a pipeline as well as a short distance nitration SBR reactor and a back flow water tank that are also connected with each other by the pipeline; wherein the intermediate water tank is connected with the short distance nitration SBR reactor, and the back flow water tank is connected with the anaerobic/anoxic SBR reactor; the anaerobic/anoxic SBR reactor and the short distance nitration SBR reactor are internally provided with stirring devices, and a drain pipe is arranged on the anaerobic/anoxic SBR reactor; the short distance nitration SBR reactor is internally provided with an aerating apparatus; the granular sludge which is processed by acclimatization and has the function of denitrifying dephosphatation is put into the anaerobic/anoxic SBR reactor, and the granular sludge which is processed by acclimatization and has the function of short distance nitration is put into the short distance nitration SBR reactor. The invention solves the problems of unstable effect of nitrogen and phosphorus removal of sewage, high content of effluent suspended matter and lower pass rate, so as to be used for low C/N waste water treatment.

The invention relates to a resinoid wedding agent cubic boron nitride grinding wheel and a manufacturing method thereof, the resinoid wedding agent cubic boron nitride grinding wheel comprises a grinding wheel matrix and a grinding layer, the grinding layer is arranged on the external wall of the grinding wheel matrix and peripheries of an upper end face and a lower end face; the grinding layer includes 12-40% of cubic boron nitride (nickel plating), 25-50% of Dialok939p resin, 1-10% of villaumite grinding aid, 1-10% of a solid lubricant filler, 10-30% of a powder filler with high thermal conductivity and 1-15% of oxide filler by volume percentage of the grinding layer. A specially designed hot pressing dies and separately batch feeding method are adopted, which causes the pressed products to have homogeneous structure and consistent density; the formula of the grinding wheel is simple, and the designed die has the advantages of simple and reasonable structure, easy die filling and die release, the product obtained has high once-pass rate, homogeneous structure and consistent density; the grinding wheel has good grinding performance and long service life, can perform peripheral grinding and end face grinding, and is equivalent to three grinding wheels with the same specification, the matrix and making cost are saved, production cost is reduced, the product value is improved.

The invention discloses a static three-dimensional face in-vivo detection method based on deep learning, and the method comprises the steps: shooting a color image through a color camera, and shootinga depth image through a depth camera; when a face is detected in the color image, obtaining a feature vector corresponding to the face through a first convolutional neural network and a second convolutional neural network according to the color image and the depth image; and judging whether the face is a living body or not through a pre-trained living body detection classifier according to the feature vector corresponding to the face. Only two cameras are adopted, the characteristics of color images and depth images are combined, the technologies of deep learning, machine learning and the like are combined, the speed, the passing rate and the anti-counterfeiting rate of human face living body detection are greatly increased, the cost is low, and the precision is high.

The invention discloses a high temperature alloy thin-wall annular casting pouring system and a manufacturing method. The pouring system comprises a casting shell and a pouring gate shell. A plurality of risers are arranged at the top of the casting shell separately. The pouring gate shell is located above the risers and provided with a pouring cup located at the top, division pouring gates are arranged on the periphery of the bottom of the pouring cup in a radial shape, and the division pouring gates are connected with drainage pouring gates corresponding to the risers one to one. A baffle is arranged on the peripheral edge of the bottom of the drainage pouring gates and shields top openings of the risers. The risers are not connected, so that the shape of a casting is not affected when the risers contract, contracting stress on the casting is avoided, and deformation or cracking of the casting is further avoided. The pass rate and the process yield of the casting are improved. The casting shell injects molten steel into the risers through the division pouring gates and the drainage pouring gates, the pouring gates only have a flow guide function for the molten steel, the molten steel is not stored in the pouring gates, and metal materials are saved.

A method of dual-pass rate control video encoding and an encoder are disclosed. Uncompressed input video is received with a video encoder. First pass encoding is performed, and a second pass encoding is performed with the video encoder at a delay relative to the first pass. The first pass encoding detects scene changes within the input video, assigns macroblocks to a pre-determined number of activity classes, and determines a complexity of each picture within the sequence of pictures. Information from the first pass encoding concerning the scene changes, the activity classes, and the complexity are used for rate control determined in second pass encoding for producing and outputting a bit stream of compressed video. During at least one of the first pass and second pass encoding, boundaries of at least some of the GOPs are adjusted to be aligned with the scene changes.

The embodiment of the invention provides a sliding verification method. The method comprises the steps that the sliding operation on a first picture is detected, the detected sliding operation is answered, whether the first picture is moved to the position where the first picture is matched with a second picture or not is determined, and the verification operation is finished. According to the sliding verification method of the implementation mode, the verification operation of a user can be simplified, the verification pass rate is increased, and the interestingness of the verification operation is improved. The implementation mode of the invention further provides a sliding verification device.

The present invention discloses a method for using an open-type rubber soft die for realization of a thin-wall I-beam structure composite material part, by a machine manufacturing method, a metal false part with a boundary dimension which is entirely consistent with the boundary dimension of the composite material part is processed, a rubber soft die molding mold with a baffle is also processed, a rubber soft die is paved and pasted in a cavity formed by the metal false part and upper and lower templates, the external part of the rubber soft die is vacuum-sealed with a vacuum bag, and the rubber soft die is molded in a hot-pressing tank; after the rubber soft die is molded, the vacuum bag is removed, the metal false part is taken out, and filled with a composite material, then the external part of the rubber soft die is vacuum-sealed with the vacuum bag, and thee rubber soft die is molded in the hot-pressing tank to obtain the I-beam structure composite material part. The method can avoid the thickness over-deviation phenomenon of the composite material part, avoids the thermal hysteresis phenomenon, effectively guarantees the molding quality of the part, and improves the passing rate and efficiency of production.

The invention provides a high-angular-resolution light filed obtaining device and an image generation method. The high-angular-resolution light filed obtaining device in which a light coding aperture is combined with a micro lens array is constructed to solve the problem that resolution tradeoff causes low spatial resolution or image aliasing leads to decrease of the quality of a light field image. The high-angular-resolution light filed obtaining device comprises a main lens, the coding aperture, the micro lens array and a sensor which are successively arranged along a light transmission path. On the premise that the positional resolution of the light field is not increased, depth information in light field data is used to improve the angular resolution of the light field. The high-angular-resolution light filed obtaining device has the advantages of being high in the angular resolution, high in the signal to noise ratio, high in the passing rate and capable of collecting light-field videos. The light-field image generation method using the compressed sensing theory has the advantages of being high in the angular resolution and capable of removing image aliasing.