688results about How to "Good lifting effect" patented technology

The invention relates to a front small-region object recognition and vehicle early warning method, and belongs to technical field of early warning for collision in front of vehicles. The front small-region object recognition and vehicle early warning method specifically comprises the steps that an image of a target to be recognized in front of a vehicle is acquired, and a region of interest (ROI)image is obtained; image preprocessing is performed on the obtained region of interest image, the preprocessed region of interest image is inputted into an improved YOLO convolutional network structure model to perform target recognition, and a target regression frame and a target category are outputted; the recognition result is inputted into a vehicle early warning system, if the target regression frame is located beyond the range of a vehicle driving route or the target is recognized to be of a non-dangerous category, the target is marked as a non-dangerous target, and the vehicle does notperform early warning; and if the target regression frame is located within the vehicle driving route and the recognized object belongs to a dangerous category or the object cannot be recognized but has certain speed features, the target is marked as a dangerous target, the vehicle performs early warning to remind a driver to pay attention so as to avoid occurrence of an accident.

The invention discloses a model training method for cross-domain sentiment analysis based on a convolutional neural network, belongs to the field of cross-domain sentiment classification, and aims tosolve the problem of cross-domain sentiment analysis. The method comprises: S1, preprocessing a text; S2, training a word vector model; S3, performing cross-domain model migration; wherein the step S3is carried out in sequence; a neural network model is trained through a source domain; migrating the trained model. Firstly, a weight value of a convolution kernel in a model is shared, a convolutionkernel weight trained in a source domain is used for extracting corresponding features in a target domain, a small part of data in the target domain is trained again, parameters of a full connectionlayer weight of the previously trained model are adjusted, and the effect is that model migration is conducted on a cross-domain emotion text.

An aerial platform comprising a kite providing a level of directional stability when elevated by the wind, and an inflated balloon attached above the kite with a cord. The payload is attached to the kite. The physical separation of the balloon from the kite isolates the payload from shocks generated by the balloon. Additional isolation is provided by use of an elastic attachment cord. Electric power is supplied to the aerial platform by means of an optical fiber receiving optical power from a ground-based source, and conversion of the optical power to electrical power on board the platform. In order to provide a strong tether line, the optical fiber is plaited with a jacket braided from high tensile strength fibers. An aerial laser transmitter is described using a ground based laser source transmitting laser power through an optical fiber to an aerial platform for transmission from the platform.

The invention relates to a Nickel single-active site graphite-phase carbon Nitride-based photocatalytic material as well as a preparation method and application thereof, in the photocatalytic material, Ni is dispersed in a g-C3N4 framework in a single-atom-level degree to form active sites, and the molar content of the Ni is 1-5%. the nickel single-active site graphite-phase carbon nitride-based photocatalytic material has a large specific surface area, is good in dispersion in an aqueous solution, and can effectively inhibit the recombination of photo-generated carriers, the reaction activitysites of the surface of the g-C3N4 are increased, the photocatalytic hydrogen production efficiency can be remarkably improved, and the photocatalytic reaction activity of the g-C3N4 can be improved.

The invention relates to a preparation method and application of a novel photocatalysis material. On the basis of the action principle of semiconductor heterojunction, bismuth oxyhalide and titanium dioxide are composited to obtain a novel titanium based photocatalysis material with the characteristics of high catalytic activity, wide applicability and good stability. The preparation method adopted by the invention is simple and efficient and is easy to implement, and the use amount of the bismuth oxyhalide is less and is about 1-3%, therefore no increase of overmuch cost may be caused. The photocatalysis material obtained by the reaction is a porous nano particle with larger specific surface area, good dispersibility and high degree of crystallinity. In addition, the photocatalytic activity of the bismuth oxyhalide/titanium dioxide composite photocatalyst is very excellent, and either under ultraviolet or visible light irradiation, the bismuth oxyhalide/titanium dioxide composite photocatalyst can show high degradation performance both on gas phase and liquid phase organic matters.

The invention discloses a bilateral filter-based single image defogging method. The bilateral filter-based single image defogging method is used for reasonably restoring degraded images influenced by hazy weather. The bilateral filter-based single image defogging method comprises the following steps: gaining a dark channel picture of an original atomization image so as to obtain atmosphere light intensity; estimating an atmosphere dissipative function by utilizing two times of bilateral filtering; obtaining a medium propagation function by using the arithmetic expression of the atmosphere dissipative function; weakening a local bright area; obtaining a clear image by using an atmospheric scattering model. The bilateral filter-based single image defogging method can be used for restoring the scenery information of the atomization image clearly and naturally and improving the visual effect of the image; the method is simple in complexity and high in running speed, thus good application value is supplied for a real-time monitoring system.

The invention relates to a prestressed hollow composite slab and a manufacturing method thereof, and belongs to the field of normal building construction. The composite slab comprises prefabricated pieces (1) and composite layers (2). Thickness of a bottom plate (3) of each prefabricated piece (1) is greater than or equal to 35 mm and less than or equal to 60 mm, prestressed steel wires (4) in the bottom plate are located at the upper parts of transversal steel bars (5), and the length of each prestressed steel wire (4) and each transversal steel bar (5) extending out of the corresponding bottom plate (3) is greater than or equal to 50 mm; the width of each prefabricated piece is greater than or equal to 1500 mm, light-weight material filling pieces (6) are arranged at the upper part of each prefabricated piece (1); the heights of concrete solid ribs (7) between adjacent filling pieces are greater than or equal to 50 mm; the transversal steel bars (5) between adjacent prefabricated pieces (1) are overlaid in a joint area (8), upper part steel bars (10) of the composite slab are bound, composite layer concrete is poured, and the composite slab is formed. According to the prestressed hollow composite slab and the manufacturing method thereof, the self-weight of the composite slab is light, the stiffness in the longitudinal direction and the transversal direction is high, the application range is large, and transportation and installation are convenient. The prestressed hollow composite slab and the manufacturing method thereof have good economic efficiency and applicability, and play a role on promoting the development of building technology.

The invention provides an active black dye composition, which comprises 45-90 weight parts of at least a component shown as a formula (I), 1-30 weight parts of at least a component B shown as a formula (II), and 1-40 weight parts of at least as a component C shown as a formula (III) and / or 1-40 weight parts of at least a component D shown as a formula (IV). The reactive black dye composition provided by the invention can be used for textile printing and dyeing, has advantages of good promotion performance, strong salt tolerance, easiness for washing and excellent wet-processing fastness, and is a rare economical black dye.

The invention discloses a preparation method of heat resistant spandex fiber, belonging to the technical field of polymer textile material and preparation thereof; the preparation method comprises the following steps of: (1) mixing polyoxytetramethylene and 4,4'-methylenebis(phenyl isocyanate) according to a mole ratio of 1/1.4 to 1/2.5 for reaction to obtain a prepolymer; (2) adding non-protonicpolar solvent to the prepolymer prepared in the step (1) so that the prepolymer is dissolved in the non-protonic polar solvent to obtain prepolymer solution; (3) adding a chain extender in the prepolymer solution obtained in the step (2) to obtain spandex spinning fluid with a molecular weight of 20-300 thousands after polymerization reaction, wherein the chain extender is aromatic diamine or themixture of aromatic diamine and aliphatic diamine; (4) using the spandex spinning fluid prepared in the step (3) to obtain the heat resistant spandex fiber with a solution spinning method. Compared with conventional spandex, the product has obviously improved resistance to heat; moreover, the viscosity stability of the polymer is good.

The invention discloses a self-adaption wave beam forming method of a broadband array under main lobe jamming, and aims at solving the problems of peak displacement, main lope widening and side lope elevating when main lope jamming inhibiting is conducted in the prior art. The method is characterized in that a Capon spectral estimation method is utilized to estimate a main lope jamming direction;main lope jamming components of a signal is eliminated through a blocking matrix; focusing processing is conducted on the signal on which main lope jamming eliminating is conducted, and a covariance matrix of a focus output signal is reconstructed; the reference frequency optimum weight under the constraint condition of constant main lope sub spatial projection is solved; focusing invert transformation is conducted on the reference frequency optimum weight to obtain corresponding weight vectors of each frequency, the signal is weighted, and a wave beam forming output signal of the array is obtained. The method has the advantages that main lope jamming and side lope jamming are effectively inhibited, main lope shape preserving of a directional diagram is achieved, side lope level is reduced, the computation efficiency is improved, and the method can be used for target detecting in a complicated jamming environment.

The invention relates to an attack mode detection method based on an event slide window. The method comprises the steps of S1, normalizing, integrating, compressing and preprocessing warning information, and aggregating the warning information with approximate attribute similarity into super warning; S2, carrying out protocol on frequent items, thereby obtaining frequent correlation sequence patterns according to a causal correlation matrix; S3, for the new frequent correlation sequence patterns at each time and warning pairs of the frequent correlation sequence patterns with different attributes, carrying out weight average on the participating attributes; and S4, generating an attack pattern graph consistent with invasion characteristics. According to the method, attack patterns existing in warning logs can be mined efficiently and accurately, new invasion access behaviors can be identified or intercepted rapidly, and the accuracy and speed of mining the attack patterns in the massive and seemingly meaningless warning logs can be greatly improved.

The present invention relates to medicine composition extracted from Paeonia lactifora Pall and containing the active components paeoniflorin and albiflorin in the total content of 50-95 % and weight ratio of 0.1-10. The composition is suitable for being prepared into various medicine preparations, including delayed releasing preparation, controlled releasing preparation, body cavity administrated preparation, spray, transdermal preparation, oral preparation, injection and transfused fluid preparation alone or together with other medicine components. The composition is suitable for preparing medicine for treating leucopenia, throbocytopenia and achreocythemia of different causes.

The embodiment of the invention relates to the field of electronic products for education, and discloses a spoken language voice evaluation method based on electronic equipment, and the electronic equipment. The method comprises the steps: recording inputted initial spoken language voice through the electronic equipment, and carrying out the denoising of the initial spoken language voice, so as toobtain target spoken language voice; carrying out the evaluation of the target spoken language voice through employing a plurality of preset unit evaluation rules, and obtaining a plurality of unit evaluation results, wherein one unit evaluation result is corresponding to one unit evaluation rule; taking the plurality of unit evaluation results as the basis, and obtaining a general evaluation result of the target spoken language voice; obtaining a unit learning suggestion corresponding to each unit evaluation result, carrying out the correlation, outputting and displaying of the unit evaluation results and the unit learning suggestions, and outputting and displaying the general evaluation result. According to the embodiment of the invention, the spoken language evaluation rules are subdivided, and the method enables the spoken language practice of a user to be more targeted, and improves the learning efficiency.

The invention relates to a lifting device for construction. The lifting device comprises a support frame, a fixed plate, a first support plate, a hydraulic cylinder and a slide rod; the support frame and the fixed plate form an integral structure; the fixed plate is respectively welded with a support base and a safety base; the first support plate is fixed on the support frame; a windlass is fixedly mounted on the first support plate, and is provided with a steel wire rope; the steel wire rope is bonded with a movable pulley; two ends of the movable pulley are movably connected with the support frame; a piston rod is arranged on the hydraulic cylinder; a second support plate and a positioning rod form an integral structure through a fixed piece; the fixed piece penetrates through a chute; the positioning rod penetrates through the safety base; and the slide rod penetrates through a lifting plate. The lifting device for construction is provided with the windlass and the hydraulic cylinder; and a mode of combining the windlass traction with the hydraulic cylinder lifting is adopted as a lifting mode of the device, so that the safety is higher, and the lifting effect is excellent.

The invention provides a reactive black dye composition. The reactive black dye composition mainly comprises 45-99 parts of at least one component A shown in formula (I) and 1-55 parts of at least one component B shown in formula (II) by mass. The reactive black dye composition has the advantages of good upgrading performance, high color fixing rate, high dyeing rate, easy washing, clear dyeing residual liquid, stable salt resistance and alkali resistance and excellent wet fastness when used in fabric printing and dyeing, and is a rare deep black economical dye.