545results about How to "Improve limitations" patented technology

The present invention discloses a malicious code analysis method based on semi-supervised learning. The method is characterized in that analysis is carried out based on the multi-dimensional features, and static features and dynamic features of a malicious code are extracted; and the difficulty of the subsequent processing through dimensionality reduction is reduced, and by using the semi-supervised learning method, the problem of the classification of a small number of marked malicious code samples is solved.

The present invention relates to a non-pillar sublevel caving method. The non-pillar sublevel caving method which loads and transports ores directly is characterized by comprising the steps as follows: two or more dipheads are tunneled downwards at the position of an orebody near a heading side along the orebody tendency and are used as main haulageways; segmented haulageways are tunneled from the dipheads to divide the orebody into segments; a stoping drift is tunneled from the segmented haulageways; the inner end of the stoping drift is tunneled a cutting roadway and a cutting winze; a vertical upward or oblique upward cutting slot medium and deep hole is drilled at the top plate of the cutting roadway, and the cutting slot is explored and formed on the cutting winze as a free surface; a mining medium and deep hole is drilled in the whole stoping drift, and the mining medium and deep hole of the stoping drift is explored on the cutting slot as the free surface to break ores; the ores are drawn under overlying rocks at the end of the stoping drift, and the ores are loaded on a tramcar directly to be transported out; when stoping, the processed of exploring the mining medium and deep hole, ore drawing and transporting out the ores are processed in the stoping drift, and the retreating mining is circulated until the stoping drift is mined completely. The non-pillar sublevel caving mehod has low cost, high ore recovery ratio, safe production and wide application range.

A multi-dimensional mechanic operating collision avoidance method suitable for an airborne collision avoidance system belongs to the field of air traffic safety technology, and comprises the following steps: monitoring and tracking a native and a target airplane; adopting a protection area model based on a surrounding body to conduct flight conflict detection; adopting a real-time collision detection method to conduct collision threat detection; using a four-dimensional space-time mechanic operating collision avoidance model to calculate and evaluate the manner and the strength of a release advise RA; conducting coordination and decision-making of the release advise RA; displaying and publishing a traffic advise TA and the release advise RA; conducting omnidistance monitoring for collision release effect after adopting a mechanic operating collision avoidance measure of the native; relieving the traffic advise TA and the release advise RA. The method improves the limitation of only being able to provide two release advises of climbing/descending vertically of a conventional airborne collision avoidance system, so as to allow the airborne collision avoidance system to be able to provide six release advises (climbing/descending vertically, speeding up/speeding down horizontally, or turning left/turning right), and has the advantages of more flexible and effective.

The invention relates to a preparation method of a chitosan hydroxybutyl derivative. Chitosan is used as a raw material; 1,2-epoxybutane is used as an etherifying agent; the hydroxybutyl modification of the chitosan is performed in an isopropanol aqueous solution dispersion system under microwave action with controlled reaction temperature and time; a chitosan derivative, hydroxybutyl chitosan, is successfully prepared; the preparation period is greatly shortened, and the preparation efficiency is increased. During the reaction, the hydroxybutyl modification of the chitosan is performed orderly under the microwave action and with controlled reaction temperature and time, which shortens the preparation period. The product has a wider pH dissolution range, and has a soluble property in weakacid, neutral, and weak alkaline aqueous solutions, that is to say, the limitation that chitosan is only soluble in acids or acid solutions is improved; the aqueous solution of the product has temperature sensitivity, can be transformed between an aqueous solution and hydrogel by adjusting the temperature; and the product is widely applicable to fields of biomedicine, tissue engineering, pharmaceutical carriers, chemical engineering, food, cosmetics, etc.

The present invention provides a method for realizing video conference service in the IMS environment, including: a step A: user terminals transmit request messages to an IP Multimedia Subsystem IMS core network, and the IMS core network forwards the request messages to the application server AS triggering business meeting; a step B: AS transmits conference resource application messages to a resource management system RMS, and the RMS appoints a multi-point control unit MCU apparatus for the conference, AS transmits request establishing conference message to the appointed MCU apparatus, the MCU establishes a conference, and returns backs the result to the AS; and a step C: after the MCU successfully creates the conference, the AS transmits the request message of the terminal to the MCU, the request message carries the session description protocol SDP of the user terminal, the MCU and the user terminal performs SDP media negotiation to establish an SIP session. The present invention has enriched the access mode of the user terminal.

The invention discloses an Alzheimer's disease adjuvant therapy system based on a VR (virtual reality) technology and physiological sign monitoring. The system comprises a data acquisition module, a VR module and a data processing and control module. The data acquisition module is in charge of acquiring physiological sign data of a user; the VR module is in charge of presenting therapy contents of special design to the user; and the data processing and control module is in charge of processing the data and controlling operations of the various modules. By virtue of the VR module, the immersive therapy contents are provided to the user, so as to complete adjuvant rehabilitation therapy on the memory of a patient with early Alzheimer's disease without the direct intervention of doctors or medicines. Through the VR technology, the user can be immersed in the therapy contents of the special design, guided by a big data technology possessing user's historical data and population data, the therapy contents are adjusted in accordance with the physiological sign data of the user; and through such repetition, individual and targeted therapy contents can be provided to the user, so as to promote the rapid rehabilitation of the user.

The invention relates to a saline-alkali soil conditioner and a preparation method thereof. The saline-alkali soil conditioner is constituted by glacial acetic acid, citric acid, oxalic acid and tap water. The preparation method comprises the following steps: weighing the tap water, citric acid and oxalic acid according to weight ratio and placing in a reaction kettle; starting stirring, warming up to 40 DEG C to 60 DEG C for 0.5 hour to 1 hour; weighing the glacial acetic acid according to weight ratio and placing in the reaction kettle; stirring, warming up to 50 DEG C to 60 DEG C for 0.5 hour to 1 hour; cooling down to 25 DEG C to 40 DEG C; carrying out measurement packaging after the samplings pass the inspection to obtain the finished product of saline-alkali soil conditioner. The saline-alkali soil conditioner in the invention is simple in manufacturing process, low in raw materials and production cost, and can realize the improvement of soil physicochemical property, inhibit theascending of saline matter and neutralizing the alkalinity of the soil.

The invention relates to a novel preparation method for a monodisperse porous polymer nano microcapsule. The porous polymer nano microcapsule is prepared by the steps: self-assembly of a polymer core microsphere and an amino modified silica crown microsphere which have different particle sizes is carried out to obtain a strawberry-shaped core-crown microsphere as a template for next step polymerization, and a core-shell composite microsphere is prepared; and the polymer microcapsule with a porous structure is obtained through etching and dialyzing the core-shell composite microsphere. The size of an internal cavity of the obtained microcapsule is controllable in the range of 500-1500 nm, the diameter of pores on the wall is controllable in the range of 30-150 nm, the wall thickness is controllable in the range of 20-100 nm, and especially the microcapsule size is monodisperse. The preparation method has the characteristics of simple equipment and controllable operation, and allows the product to be pure and monodisperse and to have uniform pore diameter. The porous polymer microcapsule can be used as a carrier widely applied in drug control release, coatings, micro-reactors, selective catalysis, composite materials and separation and other fields; and moreover, the porous polymer microcapsule also has extremely important value in cell-like structure construction, disease diagnosis, target treatment and the like.

The invention discloses a ballastless track damage analysis method performing combined solution based on definite element expansion and fatigue analysis. The method includes the following steps that a definite element model of a ballastless track is built; needed loads and boundary conditions are applied to the definite element model, and stress analysis is performed on the definite element model; a stress analysis result is imported into fatigue analysis software, and fatigue performance analysis of the definite element model is performed; based on a definite element expansion method, fracture mechanics parameters of materials of the track structure are defined in the definite element model, service life critical portions obtained during fatigue performance analysis are selected as damaged regions, and generation of damage and a continuous development evolution rule are calculated; a train wheel track coupling model is added on the definite element model, damage is applied to the truck structure, the transverse acceleration, the vertical acceleration, the derailment coefficient and the wheel weigh load reducing rate of a train are calculated after the damage happens to the track structure, and influences of the damage on running of the train are analyzed.

The invention provides a quick JavaWeb development method and system using native Web codes. The quick JavaWeb development method comprises the following steps that (1A) a database is created; (1B) a standard Java dynamic Web project is newly constructed, and connection with the database is created; (1C) a data entity model definition file is created, a corresponding data sheet and data entity Bean codes of the data sheet are generated through connection; (1D) a Web frame is selected; (1E) parameters of the Web frame are selected and background codes are automatically generated according to the parameters, wherein a data entity Bean is operated by utilizing interactive codes in the database; (1F) a Web foreground file is created; (1G) three foreground Web files including HTML, JavaScript and CSS and an XML configuration file are automatically created; (1H) required foreground Web controls are added into a visual designer, attributes and events of the controls are set, and relevant codes are automatically generated.

The invention relates to a preparation method of a novel electrochromic device. The method changes the conventional design mode of the electrochromic device (namely the device is required to simultaneously comprise different cathodochromic and anodic color-changing material layers). Only one color-changing material (or simultaneously cathode coloring or simultaneously anode coloring material) is used during preparation of the device, so that a homopolar coloring material adhered to a transparent substrate is connected to one side in parallel and is conducted with a middle layer to form two parallel current circuits; thus, the problem that the color-changing material cannot be used for preparing the device is solved, the contrast of the device is increased, the response is fast and the method has wide applicability.

The invention discloses a fire-retardant coating with photo-catalytic performance and a preparation method thereof, belonging to the field of fire-retardant coatings. The coating comprises a base material, a catalyst, a charring agent, a foaming agent, a filler, a pigment, a solvent, a dispersant, a drier, a drying aid, a nano mother solution and the like, wherein the base material is aluminum dihydrogen phosphate, the catalyst is ammonium polyphosphate, the charring agent is pentaerythritol, the foaming agent is melamine, the filler is ultra-fine slag powder, the pigment is Cu-La/TiO2, the solvent is water, the dispersant is a BYK180 polymeric dispersant, the drier is lead oxide, the drying aid is zinc powder, and the nano mother solution is a nano SiO2 mother solution. The fire-retardant coating disclosed by the invention reduces the environment pollution to the maximum extent by using industrial waste residues as the filler; meanwhile, the coating has a function of realizing photocatalytic degradation of formaldehyde gas under a visible light source to endow conventional fire-retardant coatings with a brand-new function, and the fire-retardant coating accords with the development trend of national green ecological building materials.

The invention discloses a solar autonomous mobile oxygenation system for aquaculture. The solar autonomous mobile oxygenation system comprises a solar autonomous mobile oxygenation machine, a GPS navigation module and a dissolved oxygen detection module. In the solar autonomous mobile oxygenation machine, a central control unit is connected with a perforated paddle wheel oxygenation propeller, an upper computer, a wireless data transmission receiver and the GPS navigation module, and used for acquiring information of the dissolved oxygen sensor, conducting positioning and navigation, driving the perforated paddle wheel oxygenation propeller to operate, and then automatically achieving oxygenation for the dissolved oxygen insufficient region of a breeding water area. The system is autonomously mobile, free of any manual operation, and capable of saving labor and material resources. The perforated paddle wheel oxygenation propeller of the oxygenation machine can conduct oxygenation, provide propelling force for the whole oxygenation machine, and effectively save the time of a workboat. In addition, power of the oxygenation machine is supplied by a solar power supply system, external charging is not needed, the oxygenation machine can work at night and on rainy days, and the automation degree is high.

A method for detecting twelve types of narcotic drugs by utilizing TH2 technique includes preparing narcotic drugs standard sample; applying TH2 detection technique to carry out detection on said standard samples and setting up standard fingerprint chart bank; utilizing standard set-up fingerprint chart bank to carry out detection on unknown matter including six types of morphine narcotic drugs, three types of ice narcotic drugs, two types of drugs controlled by the state and one type of new narcotic drugs.

The invention discloses an industrial process fault classification method based on self-adaption integrated semi-supervision Fisher discrimination. The method comprises the steps of when off-line modeling is conducted, firstly conducting off-line modeling on unlabeled data, and constituting a semi-supervision random training subset by combining labeled data with the unlabeled data; when iteration training is conducted on a sub classifier each time, conducting semi-supervision Fisher dimensionality reduction to obtain a Fisher discrimination matrix, and obtaining a posterior probability matrix, a combined weight of the sub classifier and a sample weight of the labeled data during next time iteration with the labeled sample data after dimensionality reduction according to a Bayesian statistics method; adopting the posterior probability matrix of the labeled data and a label of the matrix as a training set of a fusion algorithm K near neighbor; during online classification, calling each sub classifier to obtain the posterior probability matrix of an online sample to be detected, and inputting the posterior probability matrix into a fusion K near neighbor classifier with the weight to obtain a final result. Compared with an existing method, the industrial process fault classification method based on the self-adaption integrated semi-supervision Fisher discrimination improves the fault classification result of an industrial process, and more facilitates automated implementation of the industrial process.

The invention provides a rock sample porosity determination method, and belongs to the oil-gas geology exploration and development field. The method comprises the following steps: determining and calculating to obtain the entity volume of a rock sample, covering the external surface of the rock sample with a film, determining and calculating to obtain the volume of the film covered rock sample, peeling the film from the rock sample, determining and calculating to obtain the volume of the film, calculating to obtain a difference between the volume of the film covered rock sample and the volume of the film in order to obtain the bulk volume of the rock sample, calculating to obtain a difference between the bulk volume of the rock sample and the entity volume of the rock sample in order to obtain the pore volume of the rock sample, and finally calculating to obtain the ratio of the pore volume of the rock sample to the bulk volume of the rock sample in order to obtain the porosity of the rock sample. The rock sample porosity determination method has the advantages of simplification of present rock sample porosity determination methods, analytic period shortening, work efficiency improvement, applied apparatus reduction, analytic precision improvement, and cost reduction.

The invention discloses a storage and calculation array structure and an operation method thereof. The array structure comprises a resistive unit crossing rod array M, first to fourth gate regions S1 to S4, n bit line voltage sources U1n to Unn, m word line voltage sources Um1 to Umm, n bit line grounding resistors R1n to Rnn and m word line grounding resistors Rm1 to Rmm, wherein the resistive unit crossing rod array is separated from the voltage sources and the grounding resistors through the gate regions; when the storage and calculation array structure is used for calculation, the gate regions are used for realizing the gating on the grounding resistors, the voltage sources and the resistive units participating in the calculation; a material implication (IMP) logic circuit is formed. The conventional IMP logic-based resistive array is expanded, so that the IMP calculation can be performed on the resistive unit in a certain row, and can also be performed on the resistive unit in a certain line; the utilization rate on the array is greatly improved; the calculation efficiency is improved, so that the functions of storage, calculation and the like of data in the array can become more flexible.

The invention relates to an integrated intelligent roadside system for multi-information collection and release. The system comprises a data center, an intelligent main control machine, an environmentsensing module and a vehicle access communication module. The data center is used for receiving updating road testing information of the intelligent main control machine, and the information comprises traffic sensing data and traffic management control data; the intelligent main control machine is used for acquiring, processing and sending the road testing information in real time and is in communication with the data center through an optical fiber or a 4G/5G microcellular base station network; the environment sensing module is in communication with the intelligent main control machine through a router and comprises a microwave radar, a video camera and a weather environment sensing sensor; the vehicle access communication module is in in communication with the intelligent main control machine through the router and comprises a vehicle-mounted DSRC communication unit and an LTE-V communication unit. Compared with the prior art, the integrated intelligent roadside system has the advantages of being high in collection precision, uniform in function, high in intercommunity, capable of supporting various communication protocols and the like.

The invention provides a video coding conversion transmission control system based on network state self-evaluation. Aiming at the problems that the network evaluation algorithm judges the network state only by depending on the packet loss rate, the judgment division is too rough, the limitation of serving as a video transmission rate adjustment basis is large and the like, the invention providesa method for combining the packet loss rate, the network delay and the delay jitter as network state evaluation factors, and the judgment of the network state is more scientific and accurate. Aiming at the problem that effective pre-control measures cannot be taken under the condition that a network has an overload trend but is not overloaded, a network overload pre-control method is added, and the network overload problem is skillfully processed at any time. Aiming at the problems that the network overload is too serious and overload control cannot be carried out by simply adjusting coding parameters, the invention provides a non-key frame active abandoning method, so that the video quality is ensured, the transmission quality is also ensured, a frame loss strategy is carried out before coding, the coding workload is reduced, and the robustness and the high efficiency are higher.