134 results about "Potential method" patented technology

The present invention provides a presence system capable of monitoring state information, communication capabilities, or a combination thereof derived from a plurality of sources over any number of disparate networks. The state information bears on the presence or availability of the user and may take many forms. The communication capabilities relate to a potential method by which one can communicate with the user. Based on a profile provided by the user, the presence system evaluates the state information or communication capabilities from one or more sources to create presence information, including a preferred method or a prioritized list of methods by which to communicate with the user. The presence information is then delivered to subscribers of the presence information.

A path plan generating apparatus 10 corrects an RRT path plan that an RRT path plan generating section 22 has generated by processing based on the RRT algorithm, by a path plan correcting section 23 by processing based on the potential method. If the corrected path plan becomes a path plan with which interference between the mobile body 1 and an obstacle A is unavoidable, the apparatus 10 causes the RRT path plan generating section 22 to generate a new RRT path plan.

Methods and systems for estimating patient-specific cardiac electrical properties from medical image data and non-invasive electrocardiography measurements of a patient are disclosed. A patient-specific anatomical heart model is generated from medical image data of a patient. Patient-specific cardiac electrical properties are estimated by simulating cardiac electrophysiology over time in the patient-specific anatomical heart model using a computational cardiac electrophysiology model and adjusting cardiac electrical parameters based on the simulation results and the non-invasive electrocardiography measurements. A patient-specific cardiac electrophysiology model with the patient-specific cardiac electrical parameters can then be used to perform virtual cardiac electrophysiology interventions for planning and guidance of cardiac electrophysiology interventions.

The invention relates to a method for testing electrochemical corrosion of a welded pipe seam in a high-stress state, which utilizes an electronic universal testing machine, an electrolytic cell component comprising a working electrode, an auxiliary electrode, a reference electrode, a salt bridge and the like, and an electrochemical workstation. Under a load stress of between 0 and 800 MPa, the stress change caused by stress relaxation is corrected regularly by a constant potential method or a constant current method to test the circumferential tensile stress of the welded pipe seam and the circumferential tensile stress of the working electrode. A tensile sample is wide and thick at both ends and narrow and thin in the middle part and is provided with connection holes at both ends. A groove corrosion depth d1 and an average corrosion depth d2 of the working electrode are tested under different loads, so a groove corrosion susceptibility coefficient alpha, alpha=d1 / d2, of the working electrode in practical application can be obtained. The method has no stress relaxation, and the stress is convenient to regulate during test; the sample is free from generating plastic deformation or detachment under the load of high stress, and can be used for corrosion test under the condition of high stress; and the electrochemical workstation can be made full use for testing.

A process for defining and selecting integrated potential approaches (software, hardware, networking, and operations approaches) for addressing a business need. The process can include providing an identification of a business need in a concept document. A meeting that includes representatives of IT, network, and operations from each potentially impacted business domain can be held and can result in additions to the concept document identifying at least one proposed approach. An architecture blueprint can be created as a result of the meeting. Impacted systems for each proposed approach can be identified. The entire concept document and the architecture blueprint can be provided to representatives of each impacted system to determine the estimated level of effort for the development and implementation of the concept.

The present invention relates to systems and methods of enhancing prefetch operations. One potential method comprises fetching an object from a page on a web server. The method may further include storing, at a proxy server, caching instructions for the fetched object. The proxy server may be connected with the client and the object is cached at the client. Furthermore, the method may include identifying a prefetchable reference to the fetched object in a subsequent web page and using the caching instructions stored on the proxy server to determine if a fresh copy of the object will be requested by the client. Further, the method may include, based on the determination that the object will be requested, sending a prefetch request for the object using an If-Modified-Since directive, and transmitting a response to the If-Modified-Since directive prefetch request to a proxy client. The proxy client may then either serve the response to the client or a copy of the object stored at the proxy client, depending on the request for the object from the client.

Provided is a method for multi-geological factor quantitative evaluation of hydrocarbon expulsion efficiency, which belongs to the technical field of evaluation and analysis of oil and gas resources. The method comprises: establishing a light hydrocarbon recovery factor model, so as to reduce light hydrocarbon loss in a hydrocarbon generation and expulsion thermal simulation test; in addition, accurately evaluating hydrocarbon expulsion efficiency of typical wells in combination with a hydrocarbon generation potential method and a practically measured value of hydrocarbon generation and expulsion; screening out factors influencing hydrocarbon expulsion efficiency: 1) comprehensively considering internal factors and external factors influencing hydrocarbon expulsion efficiency; 2) screening out four geological factors: organic matter abundance, an organic matter type, organic matter maturity and a source-reservoir configuration relationship; 3) establishing a model relationship between a single geological factor and hydrocarbon expulsion efficiency, and a model relationship between multiple geological factors and hydrocarbon expulsion efficiency; and 4) popularizing and applying an evaluation model for multi-geological factor quantitative evaluation of hydrocarbon expulsion efficiency on the plane, so as to obtain a plane distribution diagram of hydrocarbon expulsion efficiency of hydrocarbon source rocks by evaluation, explain distribution characteristics of conventional and unconventional oil and gas, and point out conventional and unconventional oil and gas enrichment regions.

Large amounts of data from user interactions with web resources is available as data logs. Analysis may be performed to process the data log in order to determine the characteristics of the user interactions. Data log analysis may include identifying page states, which may be sets of frequent attributes and values that occur together in a session. The data log analysis may also include generating semantic labels of page states, which may describe the function of pages corresponding to different page states. Text mining models may be used to determine the semantic labels. Analysis may also include aggregating sets of page paths to create page journeys. These page journeys may be aggregated over all users, all user sessions, or other subsets of the clickstream. In some embodiments, comparing page journeys may provide recommendations for potential methods to improve the site and enhance user experiences.

The invention discloses an improved potential grid method applied to floor cleaning robots, aiming to solve the problem that in an artificial potential method, a robot vibrates nearby a barrier while can not arrive at a target point or discover a path among close obstacles, and trap areas exist. The improved potential grid algorithm is based on a boustrophedon complete coverage path planning algorithm, allowing a robot to plan an overall cleaning path within a given context, and meanwhile possess a dynamic collision-free obstacle avoidance capability. According to the invention, a cleaning robot can perform cleaning after statically building a complete coverage path within a given context, and still smoothly realize collision-free obstacle avoidance even in the case of obstacles which are not recorded in a map file, thereby effectively reducing path dead nodes and cleaning blind spots.

The invention discloses an oil-water distribution recognition method based on a well-ground potential method. The oil-water distribution recognition method comprises the following steps: firstly, establishing an oil-water two-phase seepage equation; based on a potential and water saturation model, coupling the seepage equation with a potential differential equation to form a well-ground potential model; adopting a finite difference method and solving the pressure of the model by adopting an implicit expression and solving the saturation degree of the model by adopting an explicit expression; establishing a difference potential differential equation by utilizing a relation between the water saturation and conductivity, and solving the potential by adopting the implicit expression; establishing a computer solving model on the basis; carrying out analog computation on a one-dimensional water displacement oil process; simulating the whole water displacement oil process through numerical solution to obtain a correlational relation between potential distribution and resistivity of an underground target layer; after solving the resistivity of the target layer, inversing the water saturation of a reservoir stratum by utilizing an Archie equation. The method can be used for quantitatively describing the water saturation and oil saturation in the reservoir stratum by utilizing the potential determined on the ground, and oil-water distribution can be more rapidly and accurately recognized.

The invention discloses preparation of a three-dimensional graphene manganese dioxide nano-composite modified electrode and a capacitive property test method thereof. An ionic liquid modified electrode is prepared firstly, and then three-dimensional graphene and manganese dioxide nanomaterial are electrodeposited on the surface of the ionic liquid modified carbon paste electrode by utilizing a constant potential method so that a three-dimensional graphene manganese dioxide nano-composite modified carbon paste electrode is obtained. The three-dimensional graphene manganese dioxide nano-composite modified electrode acts as a working electrode, a platinum sheet acts as an auxiliary electrode and a saturated calomel electrode acts as a reference electrode, and capacitive property of three-dimensional graphene manganese dioxide nano-composite material is tested by applying a cyclic voltammetry, an AC impedance method and a constant current charge and discharge method. The three-dimensional graphene manganese dioxide nano-composite modified electrode is simple in preparation method, high in single electrode capacitance and great in cycle performance so as to be suitable for rapidly testing capacitive property of super-capacitor electrode material.

The invention discloses a permanent magnet brushless motor sensorless starting method. The permanent magnet brushless motor sensorless starting method comprises the steps that firstly, a rotor is positioned at a specific position through a rotor prepositioning device, single-step acceleration is carried out according to the given single-step acceleration current and single-step acceleration time obtained by calculation, single-step acceleration is directly switched to closed loop acceleration after being carried out, rotor position signals in a three-phase suspended state are detected every fixed period, the power-on phase sequence is determined according to the rotor position signals, whether counter potential signals are stable or not is judged through a signal comparison method while closed loop acceleration is carried out, and when stable counter potential signals can be detected within one phase conversion period, a normal counter potential method is switched to for operation, wherein the single-step acceleration and the signal comparison method can ensure that a motor is started at the highest speed, and the closed loop acceleration process can ensure that the motor supplies power accurately in the acceleration start process and step-out is avoided. By means of the method, an efficient permanent magnet brushless motor can be started accurately, rapidly and efficiently, the optimization process is simple, universality is high, the success rate of starting can be improved greatly, no sensitivity to load changes exists, and the start program does not need to be changed when loads and the working station change within a certain range.

The invention discloses a route planning method based on a potential field method. The route planning method based on the potential field method is characterized by including the steps that according to the geographical environment determined from the flight starting point to the terminal point of an aircraft, feature information of barriers in the determined geographical environment is obtained abstractly and stored; resultant force of the aircraft and the terminal point is obtained by the adoption of the potential field method on the basis of the feature information; a current position is controlled to be updated on the basis of the resultant force. The technical problem that a route in aircraft route planning can not be adjusted in real time in the prior art is solved, and the technical effect of planning the route in real time is achieved.

The invention provides a multi-mode radar signal sorting method based on data field hierarchical clustering. The multi-mode radar signal sorting method includes steps: building a data field model according to intercepted radar sample signals; optimizing influence factors of a data field, dividing grids, and drawing equipotential lines; searching potential values of a data space by employing an elimination potential method; and performing hierarchical clustering of radar signal characteristic parameters regarding all the potential values of the data space as the clustering center, and accomplishing the sorting of the multi-mode radar signals. According to the method, based on the characteristic parameters of the multi-mode radar signals, the sorting of the multi-mode radar signals is accomplished according to the data space property formed by the multi-mode radar signal parameters, the problem that matching increase frequently occurs during the sorting of the multi-mode radar signals is well solved, and the sorting precision is high.

Methods and systems are provided for non-invasively predicting the outcome of facet nerve block procedures on patients experiencing lower back pain. A sensor array is configured to capture a set of large array surface electromyographic (LASE) data from a patient. A feature extractor computes at least one value representing the patient from the captured LASE data. A classifier selects one of a plurality of outcome classes for the patient according to the computed at least one value.

A method for differentiating or promoting or inducing differentiation of stem cells into pluripotent cardiovascular progenitors (MCPs) by transiently inducing the expression of a single gene, namely Mesp1, is disclosed. Cells obtained by the method and their uses in research and clinical settings are also disclosed. Using genome wide transcriptional analysis, the inventors found that Mesp1 rapidly activates and represses a discrete set of genes, which form potential new targets for both therapy and for the identification of MCPs. Insights into the molecular mechanisms underlying the earliest step of cardiovascular specification and potential methods for dramatically increasing the number of cardiovascular cells for cellular therapy in humans are provided.

The invention relates to a calibration method for measuring the accuracy of high-temperature crack length through a direct current potential method. The method uses a thread hooking method and the direct current potential method to measure the crack length of a high-temperature alloy specimen. As the crack front at the fracture part of the specimen is arc-shaped, the intermediate crack length is the longest, and the crack length of the surface of the specimen is the shortest. The crack length measured by the potential method is compared with the average crack length, the surface crack length and the internal crack length measured through the thread hooking method, and the average crack length measured through the direct current potential measurement method is most consistent with the average crack length measured through the thread hooking method, so that the crack length can be calibrated through the thread hooking method.

The invention discloses a non-azeotropic refrigerant charge determining method. The non-azeotropic refrigerant charge determining method comprises the following three steps of (1) estimating the refrigerant charge; (2) according to the environment characteristic of regions with hot summer and cold winter, selecting at least four working situations for refrigerant charging and performance testing from high temperature to low temperature based on the estimated value in the step (1), injecting refrigerants of different masses to a test unit, and testing the refrigerating capacity, the energy efficiency ratio, the input power and the like through an enthalpy potential method; and (3) carrying out contrastive analysis on experiment results of the selected working situations and finally obtaining the range of the optimal refrigerant charge during whole-year operation. Through estimation, testing and contrastive analysis of the refrigerant charge, the non-azeotropic refrigerant charge can be determined accurately, performance of the unit is improved, and compared with a traditional method of briefly estimating the refrigerant charge, precision is higher, and the performance of the unit is better.

The invention discloses a method for determining charging quantity of freezing and cold storage equipment refrigerating fluid. The method includes the following three steps that (1), the charging quantity of the refrigerating fluid is estimated; (2), refrigerating fluid charging and performance testing are conducted by selecting at least four working conditions from a high temperature to a low temperature in accordance with the estimated value of the step (1) according to environment features of regions where it is hot in summer and cold in winter, the refrigerating fluid of different mass is charged into a test unit, and refrigerating capacity, the energy efficiency ratio, input power and the like of the test unit are tested through an enthalpy potential method; (3), test results of the selected working conditions are compared and analyzed, and finally the best charging quantity range of the refrigerating fluid used when the freezing and cold storage equipment operates all the year round is obtained. The charging quantity of the freezing and cold storage equipment refrigerating fluid can be accurately determined through estimation of the refrigerating fluid charging quantity, tests and comparison and analysis, performance of the unit is improved, the method is more accurate compared with a traditional method for simply estimating the charging quantity of the refrigerating fluid, and the unit performance is better.

The invention provides a method of analyzing hot-dip galvannealed coating, including: use epoxy resin for cold inserting, cutting sample, milling sample, finishing, alcoholizing and use nitric acid mixed solution for etching to obtain a gold-phase sample of the coating, use sodium chloride and white vitriol as electrolyte, adopts constant potential method to determine the texture chart and polarization curve of the coating of the obtained sample, to make qualitative and quantitative analysis on the coating, not only achieving a complete, real and clear texture of the hot-dip galvannealed coating but also effectively and really making qualitative and quantitative analysis on the hot-dip galvannealed coating.

This invention relates to PAn with electrochemical reactivity at high pH value and its preparation method, which electrolyzes the electrolyte composed of aniline and ethyl sulfate-1-methyl-3-ethyl imidazole with the constant potential method for 3-8 h, then washes the PAn on the electrode to be dipped in HCl or KCl solution for 1-24 h then washes the dipped high polymerized material with HCl, finally dries it to get PAn, which can be used in conductive polymer cell, enzyme sensor, metal antisepsis, anti-static and electromagnetic shield.

The invention discloses a zeta electric potential real-time online detecting device of suspension colloid waste water. The device enables suspension colloid waste water to flow through a porous ceramic composite membrane pipe under the driving of a water suction pump by virtue of a streaming potential method; the streaming potential is measured by digital millivoltmeters which are positioned at two ends of the porous ceramic composite membrane pipe and are connected with an electrode, and the voltage difference at two ends is measured by a differential pressure transmitter. The streaming potential and the pressure difference at two ends are collected in real time through a PLC (programmable logic controller); the zeta electric potential is obtained through calculation according to a mathematic model, and is in communication with an upper position machine WINCC so as to monitor and manage the zeta electric potential as well as optimize and control the input quantity of flocculating agents; and water resource is purified, and the economical cost is also saved.

Through monitoring change of electric potential at a fixed point on high voltage transmission tower in real time, the invention determines whether there is an abnormity (including fault) in high-tension overhead line as well as carries out abnormal recognition, state estimation, abnormal positioning, and abnormal alarm based on variation character of potential under each condition. The disclosed device is composed of electric potential detector, front-end processor (FEP), and up position device. Comuniation between FEP and the up position device is carried out through GSM / CDMA etc. wireless network. Through coaxial line, FEP is connected to the electric potential detector. Features are: high sensitivity, high ratio between performance and cost etc. Being related to all contents for daily operation, maintenance, inspection and repair for transmission line, the invention is able to implement entirety automation for transmission line not limited by weather and regions.

The invention relates to an air conditioner refrigerating capacity and heating capacity testing method and an air pipe box heat meter applicable to the method. The air pipe box heat meter comprises an air pipe box, a freezing water system and a measurement control device, wherein the freezing water system comprises a freezing water coiled pipe arranged in the air pipe box; and the air pipe box is internally provided with a heating device, a humidifying device and a draught fan. The measurement method comprises the following steps that after an air conditioner starts and is led into an air pipe box; and the measurement control device controls work states of the freezing water system, the heating device, the humidifying device and the draught fan so that a dry ball temperature and a wet ball temperature of air which flows out of the air pipe box are the same as a dry ball temperature and a wet ball temperature of air which flows into an air inlet of the air conditioner to be measured; and therefore, the refrigerating capacity and the heating capacity of the air conditioner to be measured are calculated. According to the air conditioner refrigerating capacity and heating capacity testing method and the air pipe box heat meter applicable to the method, the problems that the existing method can not independently measure the refrigerating capacity and the heating capacity of the air conditioner and can not be used as an auxiliary testing method of an enthalpy potential method, and the manufacturing cost of needed equipment is high are solved.

The invention discloses a simulation method of a graphene doped structure. The method comprises the following steps of establishing an atom structure model of intrinsic graphene; doping the intrinsicgraphene; optimizing the doped graphene structure; and performing simulation calculation on the structure, the energy band, the state density and the current density of the intrinsic graphene and thedoped graphene by means of a density functional theory and plane wave pseudo-potential method. The method realizes simulation calculation on the structure, the energy band, the state density and the current density of the intrinsic graphene and the Pt / Pd atom doped graphene. The method discloses a fact that the band gap of the graphene can be opened through doping the Pt / Pd atoms into the intrinsic graphene, thereby improving conductivity of the graphene; and through increasing the content of the doping atoms Pt, the band gap of the doped structure can be increased, thereby realizing higher density of the energy band curves and increasing charge transfer degree.

The invention discloses a nano-porous palladium metal catalyst having an even three-dimensional continuous mesh-shaped porous structure. The nano-porous palladium metal catalyst is prepared by that analloy flake containing Cu and Pd according to atom number of 75:25 is performed with selective corrosion of dissolved copper with a constant potential method; then, the obtained product is dipped inPdCl2 and HClO4 mixture solution for replacement reaction to remove residual copper atom so as to prepare the nano-porous palladium metal catalyst. The nano-porous palladium metal catalyst has big specific surface area, greatly improves catalytic activity in catalysis application, needs no substrate loading and has simple preparing method and technology and relatively low cost.

The invention discloses a method for monitoring leakage at the joints of an underground diaphragm wall. Based on the steel cage structure of the underground diaphragm wall, electrode measuring lines are arranged in the underground diaphragm wall; each electrode measuring line is provided with a plurality of electrode measuring points; and the leakage of the underground diaphragm wall is monitoredthrough adopting a natural potential method. With the method of the invention adopted, construction can be convenient; drilling is not required; construction costs can be decreased; no damage is caused to the wall; the measuring points are close to leakage point positions, so that detection accuracy and accuracy can be improved; the leakage at the joints of the underground diaphragm wall can be positioned; the leakage condition of the underground diaphragm wall can be continuously monitored in the later stage; technical blank in arranging electrodes in the underground diaphragm wall and applying the natural potential method to detect and monitor the leakage positions of the underground diaphragm wall can be filled; and great guidance can be provided for the safe excavation of a foundationpit.

Large amounts of data from user interactions with web resources is available as data logs. Analysis may be performed to process the data log in order to determine the characteristics of the user interactions. Data log analysis may include identifying page states, which may be sets of frequent attributes and values that occur together in a session. The data log analysis may also include generating semantic labels of page states, which may describe the function of pages corresponding to different page states. Text mining models may be used to determine the semantic labels. Analysis may also include aggregating sets of page paths to create page journeys. These page journeys may be aggregated over all users, all user sessions, or other subsets of the clickstream. In some embodiments, comparing page journeys may provide recommendations for potential methods to improve the site and enhance user experiences.

The invention relates to an anesthesia detector, which comprises a signal generator, a paster, and the receiving optical fiber and transmitting laser fiber on the paster, analyzing circuit, data collecting circuit, and data analyzing system. The invention uses sound induction NIRS method to test the oxygen density of brain to test the brain metabolism, with the advantages of sound induction potential method and near-infrared laser oxygen testing method. The invention has high response as 0.1s, low cost and simple structure. And improve can improve the anesthesia quality, to judge the anesthesia depth.