Abstract: Provided are a method and apparatus for estimating a meteorology sensitive load power. The method includes: obtaining a meteorology sensitive load power estimation model; inputting a daily load curve of a date to be estimated to the meteorology sensitive load power estimation model and extracting a daily load curve dimension reduction feature of the date to be estimated; and outputting a meteorology sensitive load power based on the daily load curve dimension reduction feature of the date to be estimated and mapping relationships from daily load curve dimension reduction features onto meteorology sensitive load powers. The proposed estimation model can directly obtain the meteorology sensitive load power curve from the daily load curve, and is especially applicable to cases where meteorology data is frequently lost in practical applications.

Abstract: The present invention discloses a preparation method of a sulfonated two-dimensional titanium carbide nanosheet, which comprises the following steps of preparing two-dimensional titanium carbide by using aluminum atomic layers in hydrofluoric acid chemical stripping layer-shaped titanium aluminum carbide; preparing sulfanilic acid diazosalt; conducting a sulfonation reaction between the two-dimensional titanium carbide and the sulfanilic acid diazosalt to prepare the sulfonated two-dimensional titanium carbide nanosheet. The sulfonated two-dimensional titanium carbide nano material prepared through the present invention has good dispersity in water and common organic solvents, and a single-layer or few-layer sulfonated two-dimensional titanium carbide nanosheet with large size and high quality can be obtained after ultrasonic treatment is performed on a dispersion liquid.

Abstract: The present invention discloses a method for rendezvous of unlicensed users having multiple transceivers in cognitive radio networks, including four stages: an initial stage: setting an initial communication environment; a stage of selecting a rendezvous method: selecting a method for generating a channel hopping sequence according to the quantity of transceivers; a stage of generating a channel hopping sequence: using a single-transceiver rendezvous method or a multiple-transceiver rendezvous method to generate a channel hopping sequence; and a rendezvous stage: running, by an unlicensed user, on a corresponding channel and attempting to rendezvous with a destination node of the unlicensed user, where if rendezvous is achieved, the rendezvous process ends; and if rendezvous is not achieved, the rendezvous process continues until rendezvous is achieved.

Abstract: The present invention discloses a method for rendezvous of unlicensed users having multiple transceivers in cognitive radio networks, including four stages: an initial stage: setting an initial communication environment; a stage of selecting a rendezvous method: selecting a method for generating a channel hopping sequence according to the quantity of transceivers; a stage of generating a channel hopping sequence: using a single-transceiver rendezvous method or a multiple-transceiver rendezvous method to generate a channel hopping sequence; and a rendezvous stage: running, by an unlicensed user, on a corresponding channel and attempting to rendezvous with a destination node of the unlicensed user, where if rendezvous is achieved, the rendezvous process ends; and if rendezvous is not achieved, the rendezvous process continues until rendezvous is achieved.

Abstract: The present invention discloses a preparation method of an alumina supported cerium oxide powder material. A cerium organometallic precursor is effectively decomposed into CeO2 nanoparticles at 500-700° C. in an oxygen atmosphere condition by using a chemical vapor deposition method, and the CeO2 nanoparticles are evenly dispersed on an Al2O3 support. The decomposition of the CeO2 precursor is accelerated by changing experimental parameters of reaction between organic materials and oxygen, so as to control the size and microstructure of powder, thereby achieving the preparation and even dispersion of cerium oxide nanoparticles, and avoiding the problem of generation of toxic waste liquor during reaction. The method of the present invention is simple, has a short preparation period, and the cerium oxide nanoparticles prepared are evenly dispersed, can be used as catalytic materials and functional materials, and have a broad application prospect in multiple fields.

Abstract: A preparation method of an alumina-carbon nano tube composite powder material includes the steps of using an organometallic precursor as a raw material, using metal nanoparticles formed on the surface of the alumina powder as a catalyst, and simultaneously feeding a carbonaceous gas such as methane and acetylene, so as to grow a carbon nano tube in situ, and obtain an alumina-metal nanoparticle-carbon nano tube composite powder material through a chemical vapor deposition method under a temperature condition of 400 to 800° C. Through changing various parameters such as the weight of the organic raw material, the flow or constituent of reactant gases and reaction temperature, the decomposition of the organic raw material and the generation of the metal nanoparticles and the carbon nano tube are adjusted, and the size and the microstructure of the powder are controlled.

Abstract: The present invention discloses a dynamic diagnosis system and method for concrete damage based on a distributed sensing optical fiber.

Abstract: Provided are a water engineering seepage behavior fusing and sensing system and method. The system comprises a seepage-hidden optical fiber locating device, a seepage flow velocity distributed optical fiber monitoring device, an online seepage line diagnosis device and a seepage behavior optical fiber self-adaptive identification device, the location of a water engineering seepage point is realized by using the seepage-hidden optical fiber locating device, then, the seepage flow velocity of a water engineering is monitored by virtue of the seepage flow velocity distributed optical fiber monitoring device, the online diagnosis of a seepage line on a section of a whole water engineering structure can be realized by using the online seepage line diagnosis device, and finally, the current seepage behavior is integrally monitored and evaluated by using the seepage behavior optical fiber self-adaptive identification device, so that the water engineering seepage behavior fusing and sensing is completed.

Abstract: A memory-guide simulated pattern recognition method, wherein time sequence information in a memory prior to the current moment is introduced to detect motion information by means of pattern recognition using samples in the sequence as a reference is described. A memory invocation mechanism in a human brain is simulated, and different memory segments are used as elements to detect motion changes in multiple memory segments and the corresponding motion states; a memory attenuation mechanism is simulated, and motion detection results in multiple segments are combined to enhance motion change information in the current moment and form a motion state in a continuous time sequence, so as to form a motion detection result of the current moment as a pattern recognition result.

Abstract: The present invention discloses an integrated monitoring system and monitoring method for a seepage behavior of water engineering in a complex environment, the system includes a seepage character space-time monitoring device and a sensing fiber seepage-monitoring sensitizing device, the seepage character space-time monitoring device includes a vertical force-bearing fiber-carrying column, an outer edge through pipe and a sensing fiber, a left force-bearing beam and a right force-bearing beam are disposed at two sides of the vertical force-bearing fiber-carrying column respectively, the outer edge through pipe is sleeved over the vertical force-bearing fiber-carrying column, a fiber collecting box is disposed above a second transitional round end, the sensing fiber in the fiber collecting box runs through the outer edge through pipe to be connected to a component supporting body containing a temperature measuring device, and then runs through an elastic device after sequentially bypassing the second transition

Abstract: This invention discloses a UAV inspection method for power line based on human visual system. Image preprocessing module preprocesses the power line image of the input system. Power line detection module uses human visual attention mechanism to complete segmentation of the power line in the image. Binocular image registration module uses SURF algorithm to provide exact match of the feature points. The obstacle detection and early warning module uses binocular visual principle to calculate the three-dimensional coordinates of the matching point and the power line. The result output and feedback module calculates the vertical distance from the matching point to the power line according to the information about the space coordinates to complete feedback of the information about the obstacle with a threat to the power line. The method can accurately analyze the obstacle of power line in a quantitative manner, and the analysis result is stable and objective.

Abstract: A method for determining breakthrough time of anti-seepage liners in a landfill, includes (a) detecting a leachate sample of the landfill to determine the initial concentration C0 of pollutants, and monitoring the leachate head h of the landfill; (b) determining the pollution-causing concentration CA of the pollutants according to functional orientation of local groundwater of the landfill; (c) determining, related parameters of the anti-seepage liners including the thickness z of the anti-seepage liners, the permeability coefficient k of the liners, and the porosity n of the material of the liners, and determining the related parameters of pollutant migration including the effective diffusion coefficient Da* and the mechanical dispersion coefficient Dm of the pollutants in the anti-seepage liners, and the adsorption retardation factor Rd of the anti-seepage liners on the pollutants; and (d) calculating the breakthrough time t of the anti-seepage liners according to a formula, t = nR d ? z 2 (

Abstract: A method for determining breakthrough time of anti-seepage liners in a landfill, includes (a) detecting a leachate sample of the landfill to determine the initial concentration C0 of pollutants, and monitoring the leachate head h of the landfill; (b) determining the pollution-causing concentration CA of the pollutants according to functional orientation of local groundwater of the landfill; (c) determining, related parameters of the anti-seepage liners including the thickness z of the anti-seepage liners, the permeability coefficient k of the liners, and the porosity n of the material of the liners, and determining the related parameters of pollutant migration including the effective diffusion coefficient Da* and the mechanical dispersion coefficient Dm of the pollutants in the anti-seepage liners, and the adsorption retardation factor Rd of the anti-seepage liners on the pollutants; and (d) calculating the breakthrough time t of the anti-seepage liners according to a formula, t = nR d ? z 2 (

Abstract: A device for purifying first-stage drainage effluents from dry croplands, the device including: a) a plastic corrugated pipe including an upright segment and a horizontal segment, the upright segment comprising plastic mesh openings; b) a steel wire mesh box filled with stuffing pellets including biological carriers; and an inspection cover. The plastic mesh openings are disposed at one end of the upright segment, the other end of the upright segment is connected to one end of the horizontal segment, and the other end of the horizontal segment is connected to the steel wire mesh box. The upper surface of the upright segment of the plastic corrugated pipe is lower than the upper surface of the field ditch, and the lower edge of the plastic mesh openings is higher than the bottom surface of the field ditch.

Abstract: The present invention discloses a roll-over floating mixed multi-habitat submersible based on built-in driving principle comprising an outer spherical shell, a propulsion unit, an inner spherical shell, a rolling power unit, a buoyancy adjusting unit and a steering unit; the inner spherical shell can be set in the outer spherical shell rotating in the first axis direction relative to outer spherical shell; the roller power unit can be set in the inner spherical shell, capable of rotating around the second axis to generate an eccentric moment to advance or retract the submersible; the buoyancy adjusting unit and steering unit are installed in the space between the outer spherical shell and the inner spherical shell, wherein the buoyancy adjusting unit is capable of causing the submersible to sink or float in the water body and the steering unit is capable of driving the inner spherical shell to rotate relative to the outer spherical shell; The first axis is perpendicular to the second axis.

Abstract: This invention discloses a UAV inspection method for power line based on human visual system. Image preprocessing module preprocesses the power line image of the input system. Power line detection module uses human visual attention mechanism to complete segmentation of the power line in the image. Binocular image registration module uses SURF algorithm to provide exact match of the feature points. The obstacle detection and early warning module uses binocular visual principle to calculate the three-dimensional coordinates of the matching point and the power line. The result output and feedback module calculates the vertical distance from the matching point to the power line according to the information about the space coordinates to complete feedback of the information about the obstacle with a threat to the power line. The method can accurately analyze the obstacle of power line in a quantitative manner, and the analysis result is stable and objective.

Abstract: The present invention discloses a test system and a test method for detecting the cement content of cement stirring pile body in real time at a construction site. The test system specifically includes a cement slurry density measuring apparatus and a cement admixing amount calculating apparatus. The method includes measuring the density of the cement slurry in the cement slurry tank, measuring the cement soil density and inputting measured values to calculate the cement content. The cement slurry density and the cement soil density can be detected in real time, so that the admixing amount of the cement can be detected in real time during the foundation reinforcing process of the underground engineering, convenience and rapidness are achieved, the time period is short, a supervision effect is good, and cheating on workmanship and materials can be effectively avoided.

Abstract: A method for preparation of a high-density hexagonal boron nitride (hBN) ceramic material is disclosed. According to the method, the surface of hBN powder is coated with an evenly-dispersed SiO2 nanoparticle layer using tetraethyl orthosilicate as a precursor, and then the high-density hBN ceramic material is obtained by pressureless sintering. The relative density of the prepared hBN ceramic material is over 80%.

Abstract: A single-mode optical fiber having an automatic control heat source specifically produced for hydraulic seepage measurement, sequentially includes a single-core optical fiber, an inner protective elastic layer, a heat insulation steel ring, an inner-layer filling protection ring, an elastic hard ring, and an anti-seepage heat insulation hard sleeve ring arranged from inside to outside.

Abstract: The noise suppression method of individual active noise reduction system comprises the steps that: (1) initial noise digital signals are received and converted to serve as input signals of a BP neural network; (2) the input signals are processed to generate secondary digital signals; (3) the secondary digital signals are output to a loudspeaker and secondary noise is generated; (4) remained noise digital signals obtained by overlapping the initial noise and the secondary noise are received; whether remained noise digital signals is continuously constant for the set times is judged; if yes, the secondary digital signals are kept outputting; (5) if not, BP neural network parameters are optimized and adjusted with the amplitude of the remained noise digital signals being minimum as the optimality principle; remained noise digital signals of previous step are served as new input signals and the step (2) is executed again.