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89 results about "Relative index" patented technology

Method for selecting bidding advertisement keyword during release of search engine bidding advertisement

InactiveCN101625683AHow to solve the problem of how to choose bidding advertising keywordsCommerceSpecial data processing applicationsData miningCopywriting
The invention discloses a method for selecting a bidding advertisement keyword during the release of a search engine bidding advertisement, which comprises the steps of: determining an advertiser, a released search engine, and a plurality of bidding advertisement keywords to be selected; calculating the performance price index PI on the determined search engine, the relative index BI relative to the determined advertiser, the competition index RI relative to the determined search engine, and the correlation degree DI relative to a selected document of each bidding advertisement keyword; calculating a characteristic value of each bidding advertisement keyword according to the calculated PI, BI, RI and DI of each bidding advertisement keyword; and comparing the calculated characteristic values of the bidding advertisement keywords, and selecting the bidding advertisement keyword with the maximum characteristic value as the bidding advertisement keyword selected when the search engine bidding advertisement is released. The method ensures that the advertiser can select a bidding advertisement keyword which is more suitable for the advertiser when the search engine bidding advertisement is released.
Owner:精实万维软件(北京)有限公司

Water pollutant discharging gross amount intelligentized measurement method

InactiveCN101261145AOvercoming superexclusionOvercoming the Defects of StealingGeneral water supply conservationVolume/mass flow measurementMonitoring systemPollutant emissions
The invention discloses an intelligent measurement method for the total emission of the water pollutants. In a sampling period Delta t ranging from 5 minutes to 30 minutes, sewage is continuously and automatically sampled in regular time and uniformly mixed according to flux Qi; 24 hours (or 48 hours) are taken as an analysis period Delta T, the consistency of the pollutants is detected by a pollutant online measurement instrument as shown in formula (III), and the total emission of the pollutants in the analysis period can be worked out as shown in formula (I) and formula (II). The intelligent measurement method of the invention can improve the real-time of sampling and the science and accuracy of the monitoring result, can reduce the detection times of relative indexes, and effectively reduce the monitoring cost. When the intelligent measurement method of the invention is used for improving the existing pollutant total quantity monitoring system, the problems of overproof emission by stealth, excessive emission, and unscientific calculation of the total emission of the enterprise pollutants, etc., which exist in some current enterprises can be solved, and the environmental protection monitoring and the law enforcement level can be effectively improved.
Owner:SOUTHEAST UNIV

Frame and intraframe coding mode selection method

The invention provides a selection method of an encode mode between interframe and inframe, which includes the following steps: (1) after the interframe model cost JInter is calculated, an Intra cost Ji of four square blocks at the top of a micro block is calculated, and image reconstructions of the four square blocks are completed,; (2) relative index SADBE1 of the inner space of the micro block are calculated; (3) a predicted value JInter1 of the Intra cost is calculated, according to the Intra cost of the four square blocks at the top of the micro block, an offset QP0(QP) of mode selection and the relative index of the inner space of the micro block; (4) whether the predicted Intra cost JInter1 is larger than the calculated Inter cost JInter or not is judged, if yes, the encode mode of the micro block is determined to be an Inter mode, and the method is completed; if no, the step (5) is carried out; (5) Intra cost of four square blocks which are adjacent to the four square blocks at the top of the micro block is calculated, and the image reconstructions of the four square blocks are completed; (6) relative index SADBE2 of the inner space of the micro block is calculated; (7) a predicted value JInter2 of the Intra cost is calculated; (8) whether the Intra cost JInter2 is larger than the Inter cost JInter or not is judged, if yes, the encode mode of the micro block is determined to be an Inter mode, and the method is completed.
Owner:ZTE CORP

Method for manufacturing panda type polarization-preserving fiber

The invention relates to a manufacture method of a polarization maintaining optical fibre, which comprises the following steps: a mandrel and stress application performs are depositionally made with a deposition method, the mandrel and a quartz sleeve are melted to be draught into an optical fibre perform with a fibre core and a covering, and the two stress application performs are respectively inserted into two holes of the perforated optical fibre perform to form a combined optical fibre perform. The combined optical fibre perform is put into a fibre drawing tower for drawing to be made into a panda type polarization maintaining optical fibre. During drawing, the temperature in the drawing tower is controlled within 1700 DEG C to 2000 DEG C, the optical fibre drawing tension is controlled at over 30g, and the optical fibre drawing speed is controlled at over 300m/min. The invention has simple process and high reliability. The high-tension and high-speed drawing reduces the fluctuation of the optical fibre drawing speed so as to improve the geometrical consistency of the optical fibre, optimize the service performances of the polarization maintaining optical fibre, and improve the drawing production efficiency, and thus the capacities of tension screening, dynamic fatigue and tensile resistance of the polarization maintaining optical fibre meet or are even superior to relative index requirements.
Owner:YANGTZE OPTICAL FIBRE & CABLE CO LTD

Dispersion compensation fiber and module thereof

The invention relates to a dispersion compensation fiber for carrying out dispersion compensation at a C waveband and a module thereof. The structure of the dispersion compensation fiber comprises a fiber layer and a cladding and a sunken cladding, and an annular lading, a matching lading and a pure quartz cladding coat outside the fiber core in sequence, wherein the relationship that delta 1 percent>delta 3 percent>delta 4 percent>delta 5 percent>2 percent is satisfied, the difference range of relative index of refraction comprises the following sequence: delta 1 percent is 1.5 percent-2.0 percent, delta 2 percent is -0.7 percent to -0.5 percent, delta 3 percent is 0.4 percent-0.6 percent, delta 4 percent is -0.15 percent to -0.05 percent and delta 5 percent is 0; and the radius range of the fiber core and various claddings from R1 to R5 comprises the following in sequence: 1.4-1.6 micrometers, 4.3-4.8 micrometers, 6.8-7.8 micrometers, 10-15 micrometers and 38-63 micrometers. The dispersion compensation fiber has high negative dispersion and negative dispersion gradient at an optical communication window of C waveband, so an optical communication system working at C waveband window is easy to update, optical fibers can more easily insert into a communication link to meet the transmission requirements of high-speed high-capacity system and the miniaturization of the dispersion compensation module can be more easily realized.
Owner:YANGTZE OPTICAL FIBRE & CABLE CO LTD

Bending-resistant multimode fiber

The invention relates to a bending-resistant multimode fiber comprising a core layer and a cladding. The refractive index profile of the core is in [alpha] power exponent function distribution. The bending-resistant multimode fiber is characterized in that the cladding successively comprises, from inside to outside, an inner cladding, a first sunk cladding, a second sunk cladding, and an outer cladding; the core layer has a distribution index [alpha] from 1.9 to 2.2, a radius R1 from 23 to 27[mu]m, and a maximum relative index of refraction [delta]1 from 0.9 to 1.2%; the inner cladding has a radius R2, a unilateral radial thickness R2-R1 from 0 to 6.0[mu]m, a relative index of refraction difference [delta]2 from -0.3 to 0.03%; the first sunk cladding has a radium R3, a unilateral radial thickness R3-R2 from 2.5 to 6.0[mu]m, and a relative index of refraction difference [delta]3 from -0.6 to -0.2%; the second sunk cladding has a radium R4, a unilateral radial thickness R4-R3 from 6.0 to 10.0[mu]m, and a relative index of refraction difference [delta]4 from -0.3 to -0.2%; and the outer cladding is a pure silicon dioxide glass layer. The bending-resistant multimode fiber has excellent bending resistance and broad bandwidth performance.
Owner:YANGTZE OPTICAL FIBRE & CABLE CO LTD

Nondestructive measurement method of chlorophyll in leaf

InactiveCN103163094APositive and beneficial technical effectsDetermination successColor/spectral properties measurementsChlorophyll bLuminosity
The invention relates to a nondestructive measurement method of chlorophyll in a leaf. The method comprises the steps of irradiating the leaf and a reflector plate by rays with two (or three) specific wavelengths, and calculating a relative index (or actual content) of chlorophyll content according to the reflectivity, wherein the index (or actual content) and the total content of chlorophylls (or content of chlorophyll a, content of chlorophyll b, and total content) have obvious correlativity (or quantitative functional relation), so as to estimate and calculate or restore the content of chlorophylls (or calculating chlorophyll a, chlorophyll b and total chlorophyll content) in the leaf according to the correlation. The method disclosed by the invention is not limited by the thickness of the leaf while the error is rapidly amplified by the existing transmission-type colorimetric assay method when the thickness of the leaf is large and the absorptivity A is greater than 1.0. According to the scattered reflection measurement method disclosed by the invention, diffuse reflection is carried out at any level inside the leaf, and the effect of the thickness of the leaf is small. The method disclosed by the invention is low in detection cost of the chlorophyll; no consumable items are used; and the technical preparation process of a conversion model is not needed.
Owner:河南农大迅捷测试技术有限公司

Single mode fiber with low damping coefficient

The invention relates to a single mode fiber with a low damping coefficient. The single mode fiber with the low damping coefficient comprises a core layer and a cladding layer and is characterized in that the radius r1 of the core layer is 3.9-4.6Mum, the relative index of refraction delta1of the core layer is 0.08%-0.24%, the core layer covers an inner cladding layer, an concaving inner cladding layer, an auxiliary outer cladding layer and an outer cladding layer from interior to exterior, wherein the radius r2 of the inner cladding layer is 8-15Mum, the relative index of refraction delta2 of the inner cladding layer is-0.30 %--0.05 %,the radius r3 of the concaving inner cladding layer is 14-20Mum, the relative index of refraction delta3 of the concaving inner cladding layer is -0.6 %--0.2 %, the radius r4 of the auxiliary outer cladding layer is 35-50Mum, and the relative index of refraction delta4 of the auxiliary outer cladding layer ranges from -0.35 % to -0.05 %. The outer cladding layer is a pure silicon dioxide glass layer. The single mode fiber with the low damping coefficient has the advantages that the damping coefficient of a fiber is reduced, and through the reasonable design on the section face of each core and cladding layer of the fiber, the fiber is provided with a MFD equal to or larger than 8.7Mum; the section face of the fiber adopts a multilayer step-pattern concaving cladding structure, the wide cladding structure is used for limiting fundamental mode reveal, and a good improvement function on the bending loss of the fiber is achieved.
Owner:SHANTOU HIGH TECH ZONE AOXING OPTICAL COMM EQUIP

Method for quantitatively evaluating light distribution performance of automotive headlamp

ActiveCN104819831AObjective and quantitative evaluation of qualityTesting alignment of vehicle headlampsEffect lightPerformance grade
The invention relates to the field of motor vehicle lighting, and especially relates to a headlamp performance evaluation method. A method for quantitatively evaluating the light distribution performance of an automotive headlamp comprises the following steps: establishing an automotive headlamp light distribution database and dividing the automotive headlamp light distribution performance into a plurality of grades; calculating relative indexes of performance parameters of all automotive headlamps; performing weighted calculation on the relative indexes to obtain the composite score of the light distribution performance of each headlamp; obtaining the composite score of the light distribution performance of a headlamp to be evaluated through experiment; and comparing the composite score of the light distribution performance of the headlamp to be evaluated with the composite scores of the light distribution performance of the headlamps in the database to obtain the grade of the headlamp to be evaluated. According to the invention, a set of standards is set, multiple performance parameters of the light distribution performance of a headlamp are synthesized into a visual performance grade according to the standards, and a result of performance comparison between different headlamps can be obtained directly through quantitative detection. Thus, ordinary users can choose headlamps visually based on the result of comparison, and the quality of the headlamps is evaluated objectively and quantitatively.
Owner:SHANGHAI MOTOR VEHICLE INSPECTION CERTIFICATION & TECH INNOVATION CENT CO LTD
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