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115results about How to "Increase depth" patented technology

Patent literature similarity measurement method based on ontology

The invention relates to a patent literature similarity measurement method based on ontology, and relates to the technical field of natural language information processing for the ontology. The method comprises the following steps: extracting a core technical scheme according to the structural features, the position features and the keyword features of patent literatures; constructing a model for the relation between thematic terms of patent classes; constructing a field dictionary according to the model for the relation between the thematic terms of the patent classes and segmenting terms and removing stop terms for the core technical scheme; extracting keywords and weight by combining the relation between the thematic terms to TF-IDF as TextRank term initial weight; training a FastText model, and generating a term vector; and calculating an EMD distance to obtain a semantic distance according to keywords, term weight and term vector. Compared with the prior art, the patent literature similarity measurement method based on the ontology solves the problem that the similarity is low due to the fact that the structural features, the field features, the term relation features and the semantics approximate expression of the patent literature are not fully considered.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

System and method for measuring intensity of long air gap lightning stroke discharging electric field

The invention discloses a system and method for measuring the intensity of a long air gap lightning stroke discharging electric field, and relates to the technical field of electric systems. The system and method are used for acquiring high-precision electric field intensity of the streamer, guidance and tail leap conversion processes, improving the deep degree of discharging physical mechanism research under long air gap lightning impulses, and finally improving the lightning preventing capacity of the electric systems. The system for measuring the intensity of the long air gap lightning stroke discharging electric field comprises an impulse voltage generator, a capacitive voltage divider, a measuring resistor, a plate electrode, a bar electrode located above the plate electrode, a spectrograph, an ICCD camera and an oscilloscope. The measuring system in the technical scheme is applied to the method for measuring the intensity of the long air gap lightning stroke discharging electric field. The system and method for measuring the intensity of the long air gap lightning stroke discharging electric field are used for study of lightning defense of the electric systems.
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Wharf structure suitable for silt coast and construction method of wharf structure

The invention discloses a wharf structure suitable for a silt coast. A direction which is close to the sea is used as a front direction, and a direction which is relatively away from the sea is used as a rear direction. The wharf structure comprises a causeway, a front diaphragm wall, a rear diaphragm wall, a partition, a plurality of coupling beams and a wharf upper part structure, wherein the front diaphragm wall, the rear diaphragm wall and the partition form a cylindrical caisson structure; the coupling beams are connected with the rear diaphragm wall and a pile foundation; and the wharf upper part structure covers the front diaphragm wall, the rear diaphragm wall, the partition and the pile foundation. By the structure, construction difficulty and engineering investment costs are reduced effectively. A construction method comprises the following steps: (1) constructing the causeway by bagged sand quilts; (2) reinforcing the causeway and silt filled at the rear of the causeway in a blowing manner, reinforcing new silt filled in the blowing manner, and constructing the front diaphragm wall, the rear diaphragm wall and the partition to form the cylindrical caisson structure when the bearing capacity of foundation soil reaches 5 tons at least; (3) excavating causeway remaining earthwork in front of the front diaphragm wall and earthwork under a natural silt surface, and enabling the front edge of a wharf to reach designed water depth; and (4) constructing the pile foundation and the coupling beams, and then constructing the wharf upper part structure. The construction method is simple.
Owner:CCCC THIRD HARBOR CONSULTANTS

Cellular automaton-based arid region natural oasis space dynamic simulation method

The invention discloses a cellular automaton-based arid region natural oasis space dynamic simulation method. The cellular automaton-based ecological water delivery driven arid region natural oasis space dynamic simulation method includes:, based on normalized vegetation indexes, underground water burial depth observation data and other multi-source information obtained through remote sensing images, simulating the total oasis area by adopting an underground water bearing capacity function and an oasis area dynamic function; constructing a cellular NDVI, a neighborhood vegetation rate, a neighborhood flooding rate and a cellular state change probability function according to the NDVI sequence; calculating the coating conversion probability at the t + 1 moment by adopting the cellular NDVI,the neighborhood vegetation rate and the neighborhood flooding rate at the t moment; and calculating a coating conversion score of each cell by adopting a weighted average method, sorting the coatingconversion scores from large to small, setting a coating conversion dynamic threshold in combination with the oasis area simulation result, finally judging how to change the state of the cell in combination with the coating conversion static threshold, obtaining an oasis space dynamic simulation result, and reflecting a model simulation effect through precision evaluation.
Owner:HOHAI UNIV

Submarine cable three-dimensional route measuring method and measuring instrument based on magnetic vector data

The invention relates to a submarine cable three-dimensional route measuring method and measuring instrument based on magnetic vector data. The method is characterized by comprising the following steps that (1) a measuring ship starts from one end of a submarine cable to drag a water surface towed body, the route of the measuring ship is adjusted and kept, the water surface towed body is made to be located near the submarine cable, and a triaxial fluxgate magnetometer tests an alternating magnetic field signal generated by submarine cable power frequency current until the moment t1; 2) based on geomagnetic field total field data B0 and geomagnetic three-component data Bx (t), By (t) and Bz (t) measured by the water surface towed body, longitude coordinates lon1 (t1) and latitude coordinates lat1 (t1) of the water surface towed body, and a real-time vertical height H0 (t1) from the water surface towed body to the seabed, a longitude coordinate lon2 (t1), a latitude coordinate lat2 (t1)and burial depth data d (t1) of the submarine cable are calculated; and 3) a three-dimensional route of the submarine cable is drawn on the three-dimensional coordinate graph according to the longitude coordinate lon2 (t1), the latitude coordinate lat2 (t1) and the burial depth data d (t1) of the submarine cable. The detection of the burial depth of the submarine cable is increased, the referencevalue of the routing information of the submarine cable is improved, and the efficiency of the three-dimensional route measurement of the submarine cable is improved.
Owner:ZHOUSHAN ELECTRIC POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER +3

Industrial production method of base material, nano-fiber composite filter maternal, for bag filter

The invention provides an industrial production method of a base material, nano-fiber composite filter maternal, for a bag filter. This method comprises the following steps: 1), preparing the base material: making polyester filament fiber into polyester nonwoven base material by a needling or spunlacing process, and subjecting the surface of this fiber to singeing and high-temperature calendaring to form the base material 20-30 micrometers in fiber diameter and 300-600 gsm in gram weight; 2)< preparing a spinning solution for use in a closed container; 3), combining a composite nano-fiber layer to the base material: upwardly aligning a nozzle of a high-pressure electrostatic spinning device to a surface layer of the base material, aligning the prepared spinning solution the base material for spinning to form, by disorder stacking, a PU (polyurethane) nano-fiber mesh 300-1000 nanometers in diameter in pores of the base material fiber, thus combining to form the composite filter material containing the base material fiber and nano-fiber; 4), roll-pressing the composite filter material. The base material, nano-fiber composite filter material that is efficient, low in resistance, tolerant to high temperature, tolerant to oil, resistant to hydrolysis and anti-static, can be produced industrially in batch.
Owner:SOOCHOW BOYOO NANO TECH CO LTD

Resistance reducing agent for coiled tubing and preparation method and application

The invention provides a resistance reducing agent for coiled tubing, a preparation method and application. The resistance reducing agent comprises the following materials in percentage by weight: 45-60% of base oil, 14-18% of anionic surfactant, 15-20% of non-ionic surface active agent, 5-8% of corrosion inhibitor and the balance water. According to the resistance reducing agent for the coiled tubing, the anionic surfactant is used in combination with the non-ionic surface agent so as to emulsify the base oil into small liquid drops which are dispersed in an aqueous solution; the base oil hasthe effects of lubrication and resistance reduction; and the corrosion inhibitor is added and used for reducing the corrosion effect of the solution on the coiled tubing. The friction resistance between the coiled tubing and the inner wall of a wellbore can be effectively reduced through the use of the aqueous solution of the resistance reducing agent in the process of coiled tubing entering, andthus, the entering depth and entering efficiency of the coiled tubing are improved. In addition, the resistance reducing agent for the coiled tubing is low in cost, has low corrosivity on an oil casing pipe, is convenient to allocate on site and convenient to use and can be applied on a large scale.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
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