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61results about How to "Good match" patented technology

Private matching method based on matrix transformation algorithm

The invention discloses a private matching method based on a matrix transformation algorithm, which mainly overcomes the shortcoming that a best friend cannot be efficiently searched in the conventional social networking site during private matching. The private matching method comprises the steps of (1) constructing a communication system framework between a user and a certificate management mechanism CA; (2) verifying a property submitted by the user through the certificate management mechanism CA, generating a certificate for the user property and peforming corresponding certificate management; and (3) mutually verifying identity information by the users verified by the certificate management mechanism CA, and executing matching on each two of the users based on the matrix transformation algorithm. According to the private matching method, the number of common properties and the personal hobby are simultaneously considered; the optimal matching among the users is realized by calculating the maximum matching value between each two of the users, and the simple matrix transformation replaces the complicated encryption and decryption calculation in the conventional algorithm; the matching efficiency for mobile users is improved; the private matching method can be used in a mobile social networking site.
Owner:XIDIAN UNIV

High-strength and high-toughness hot rolled magnetic yoke steel with yield strength to be 550MPa grade and production method

The invention discloses high-strength and high-toughness hot rolled magnetic yoke steel with the yield strength to be a 550MPa grade. The high-strength and high-toughness hot rolled magnetic yoke steel is prepared from the following components in percentage by weight: 0.01-0.03 percent of C, smaller than or equal to 0.15 percent of Si, 1.00-1.40 percent of Mn, smaller than or equal to 0.025 percent of P, smaller than or equal to 0.015 percent of S, 0.04-0.08 percent of Ti, 0.02-0.10 percent of Als and smaller than or equal to 0.010 percent of N. The high-strength and high-toughness hot rolled magnetic yoke steel is prepared through the following production steps: pouring after hot metal desulphurization, converter combined blowing and vacuum treatment; heating a slab; rough rolling; finish rolling; laminar cooling; and reeling. According to the high-strength and high-toughness hot rolled magnetic yoke steel disclosed by the invention, the yield strength is larger than or equal to 550MPa, the tensile strength is larger than or equal to 650MPa, the ductility A is larger than or equal to 15 percent, the impact energy KV2 at 20 DEG C below zero is larger than or equal to 100J, the magnetic induction performance B50 is larger than or equal to 1.50 T, and the demand of a large hydro-generator rotor magnetic yoke with high unit capacity for using the high-strength and high-toughness hot rolled magnetic yoke steel can be met.
Owner:武汉钢铁有限公司

High frequency ultrasonic energy transducer with optimized performance and manufacturing method thereof

The invention discloses a high frequency ultrasonic energy transducer with optimized performance and a manufacturing method thereof; the energy transducer comprises a backing layer, a piezoelectric layer and a matching layer connected in sequence; the backing layer is a glue mixture doped with granular material and/or the matching layer is a granular material doped glue mixture and/or a poly-p-xylylene film. The method comprises the following steps: casting the glue mixture doped with granular material on one side/two opposite sides of the piezoelectric layer so as to form the matching layer and/or backing layer; grinding solidified matching layer and/or backing layer to a preset thickness. The other method comprise the following steps: plating the poly-p-xylylene on one side of the piezoelectric layer so as to form the matching layer and/or casting the glue mixture doped with granular material on the other side of the piezoelectric layer so as to form the backing layer. The high frequency ultrasonic energy transducer and the manufacturing method thereof can prevent the generation of a glue bonding layer, so the matching layer and/or backing layer and the piezoelectric layer can be better matched, and wider bandwidth is realized, thus optimizing propagation efficiency of the sound wave energy.
Owner:上海爱声生物医疗科技有限公司 +1

Cigarette raw material mixing uniformity evaluation method based on design value

The invention relates to the technical field of cigarette processing, in particular to a cigarette raw material mixing uniformity evaluation method based on a design value. The method comprises the following steps of establishing and verifying a mathematical model of a raw material mixing ratio and a nicotine value based on the characteristic of significant difference of characteristic component nicotine of different raw material tobaccos of a cigarette, respectively determining different cigarette nicotine amounts, substituting a designed mixing ratio into the model, and calculating a designed nicotine value, and calculating according to a formula to obtain the mixing uniformity of the cigarette raw materials. According to the method, required equipment and operation treatment are simple,and the required sample amount is small; accurate measurement of the mixing uniformity of cigarette raw materials can be realized; meanwhile, a theoretical design value and a mathematical model established by tobacco characteristic components are innovatively applied to the evaluation of the mixing uniformity of the cigarette raw materials; compared with the average value, the theoretical designvalue is more objective and accurate, the phenomenon of mixing uniformity distortion caused by insufficient sampling amount, overall deviation in the actual production process and the like can be effectively avoided, and technical support is better provided for accurate regulation and control of a cigarette formula and development of a cigarette uniformity technology.
Owner:GANSU TOBACCO IND

High-performance airfoil for fan

The invention relates to a high-performance airfoil for a fan, in particular to a high-performance airfoil for a fan, which is designed by applying an advanced pneumatic analysis technology in an aviation technology according to actual working conditions of low Reynolds number (generally lower than 106) of a small-size and low-rotating-speed fan; the invention discloses a maximum camber and a position thereof of the airfoil, a maximum thickness and a position thereof, an equation satisfied by upper and lower surfaces and an airfoil coordinate; f is the maximum camber; Xf is a transverse coordinate value of the maximum camber of the airfoil; t is the maximum thickness; Xt is a transverse coordinate vale of the maximum thickness of the airfoil; and C is a chord length. An original point of a coordinate system of the airfoil is defined as a front edge point of a middle arc line of the airfoil; an X axle is overlapped with a chord line; the direction is to point to the airfoil back edge from the airfoil front edge; and a Y axle is perpendicular to a direction of bending the X axle to the middle arc line of the airfoil. Under the same working conditions, compared with a traditional fan airfoil, the fan adopting the airfoil is better in matchability with actual working conditions, higher in air volume, lower in noise and higher in energy efficiency value.
Owner:XIN CHANG COUNTRY SAN XIN AIR CONDITIONING FAN CO LTD

Method and device for hepatopathy nutrition state detection

The invention discloses a method and a device for hepatopathy nutrition state detection. The method includes: obtaining phase angles and modulus of impedances in three directions of the trunk portion of a human body by measuring three-dimensional impedances of the human body, overlaying the three-dimensional impedance information to obtain the modulus and the phase angles of the combined impedances, drawing a biological impedance vector diagram, and evaluating the hepatopathy nutrition state according to the position of the measured impedance vector. In the device using the detection method, a current generation device (11) chooses current injection electrodes at different positions through a multi-path switch (9) to inject current into the human body (19), the multi-path switch (10) can be utilized to choose corresponding voltage measuring electrodes, and the voltage among the measuring electrodes can be transmitted to an industrial personal computer (17) through a voltage amplifier (12) and a demodulator (13). The industrial personal computer confirms the impedance components in the directions of human body coronal axes, sagittal axes and vertical axes according to the position information of the current injection electrodes and the voltage measuring electrodes, combines the impedances and analyzes the liver nutrition state.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI +1

Line anti-vibration hammer capable of adjusting resonant frequencies

The invention discloses a line anti-vibration hammer capable of adjusting resonant frequencies, relates to a line anti-vibration hammer, and aims at solving the problems that the existing antivibrator only can be matched with several resonant frequencies, and a resonance vibration attenuation effect cannot be exerted on other numerous frequencies. A line sheath of the line anti-vibration hammer disclosed by the invention covers a lead; a clip assembly is arranged on the line sheath; a middle support plate is connected with the lower end of the clip assembly through bolts; a bottom support plate is arranged at the lower end of the middle support plate; a stepping motor is arranged on the bottom support plate through a pressing plate; the output end of the stepping motor is connected with a screw; two ends of the screw are respectively supported by a first rotating part and a second rotating part and are rotatably connected; a worm wheel is arranged on the bottom support plate above the screw; the middle part of a rotating lever is rotatably arranged on the middle support plate; two ends of the rotating lever are respectively and rotatably connected with one end of a first connecting rod and one end of a second connecting rod; the other end of the first connecting rod and the other end of the second connecting rod are respectively and rotatably connected with a resonant device. The line anti-vibration hammer disclosed by the invention is used for resonant frequency adjustment of an overhead line.
Owner:STATE GRID CORP OF CHINA +2
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