42 results about "Maximal flow" patented technology

Disclosed is a method, upstream processing node, and computer readable medium for processing data packets. The method includes receiving an allocation for at least one computing resource. At least one data packet at one or more upstream processing elements in an upstream processing node is received. The method also includes determining if at least one output queue of the upstream processing elements includes available space for processing of the data packet. The data packet is processed in response to the output queue including available space to form a resulting data packet. The method further includes determining that an input queue of at least one downstream processing element of a plurality of downstream processing elements includes available space for receiving the resulting data packet In response to the determining, the resulting data packet is transmitted from the upstream processing element to the downstream processing element.

The disclosed dynamic allocation method for BS signaling link routine in mobile communication system comprises: there are at least two link routines every with minimal/maximal flow threshold M/N between every BS and controller; for normal communication, it starts one link route as the main route for signaling interacting, and keeps other routes as stand-by; the flow detection module decides whether the main route flow over N, if yes, the route allocation module starts all routes to share whole business; then, the module detection module detects the flow of all routes and closes all stand-by routes if the total flow less than M, then switches current business to the main route. This invention has high reliability, improves resource utility, and reduces resource waste.

The invention discloses a video multi-path parallel transfer method is a wireless self-organization network, video data is distributed to optimal multiple paths for simultaneous transmission on the whole, and a data sending end is used for selecting the path with the minimal time delay for transmitting a data packet which constitutes the video data according to the situations of time delay and data packet sending rate of the multiple paths partially. The selection principle of the optimal multiple paths is to select a shortest path set in all the paths of the data sending end and a data receiving end, and then seek a maximal flow path set in the shortest path set, wherein the maximal flow path set which meets the requirements on video data transmission bandwidth comprises the multiple paths for simultaneously transmitting the video data. The sending end and the receiving end further comprise network state feedback and real-time flow control functions, the receiving end can calculate the time delay of a link according to the received data packet, the time delay of the link is fed back to the receiving end, and then the receiving end can dynamically adjust the data packet sending rate of all the paths according to the time delay of the link of the paths.

A method for limiting a supply flow (q_S) in a heat transfer system which includes a supply conduit (10) with a supply flow (q_S) and with a supply entry temperature (T_S), and at least one load circuit (2) with a load pump (20) which provides a load flow (q_L) with a load entry temperature (T_L) and a load exit temperature (T_R). The load entry temperature (T_L) is set by way of changing the supply flow (q_S), wherein the supply flow (q_S) is limited to a maximal flow (q_S, max), taking into account at least one temperature detected in the load circuit (2). A heat transfer system, in which this method is realized, is also provided.

Methods for vessel segmentation and tracking using 7D MRI flow image data incorporate information from the velocity field and the magnitude. A vessel tracking methods selects a time containing sufficient blood flow through a vessel, uses the magnitude image to determine the vessel boundary and uses the velocity image to define the vessel direction. A method for segmenting tubular and circular objects segments the objects into separate vessels and then uses the velocity data to reunite the objects, where touching components are evaluated by the velocity field where they are connected. If vectors point towards the other component, the two components are reconnected. An advection-diffusion method based on fluid dynamics performs a fluid dynamics simulation with image forces according to the Navier-Stokes equations. With the 7D data, the vector field is available from the flow data, from the time point at which maximal flow occurs in the vessel of interest.

The invention discloses a heavily silt-carrying river water quality and water flow integrated configuration and dispatching method and system. The heavily silt-carrying river water quality and water flow integrated configuration and dispatching method comprises the steps that S1, required data for heavily silt-carrying river water quality and water flow integrated configuration and dispatching modeling is acquired, and a model physical boundary and a parameter threshold boundary are established; S2, a heavily silt-carrying river water quality recovery capability evaluation standard and methodare established; S3, a heavily silt-carrying river water quality and water flow double-control mechanism is established; S4, a heavily silt-carrying river water quality and water flow integrated configuration and dispatching model is established; S5, the heavily silt-carrying river water quality and water flow integrated configuration and dispatching model is solved; and S6, a heavily silt-carrying river water quality and water flow integrated configuration and dispatching scheme is generated and output. The method has the advantages that based on six characteristic rule identifications and water quality recovery capability evaluation of a heavily silt-carrying river, the model is solved with the application of an improved minimum cost and maximal flow theory, the heavily silt-carrying river water quality and water flow integrated configuration and dispatching scheme is optimized and output, so that a new technical scheme is provided for realizing water flow and water quality synchro coupling control and management on the heavily silt-carrying river.

The invention relates to a urea injection system for a boat. The system comprises a pump station unit, a urea solution pressure control unit, a metering control unit and a nozzle and spray gun unit, wherein the metering control unit comprises a urea solution module, a compressed air atomizing module and a compressed air blowing module; the pump station unit is sequentially communicated with a urea solution pressure control unit pipeline, the urea solution module and the nozzle and spray gun unit via pipelines; the compressed air atomizing module and the compressed air blowing module are communicated with the nozzle and spray gun unit after being connected in parallel. By action of the system disclosed by the invention, the supplied urea solution is constant in pressure within a range that the required maximal flow rate is about 4 times the minimal flow rate. Finally, an SCR system for the boat can be successfully applied to treatment of tail gas NOx of a marine diesel engine; the efficiency is above 98%; environmental pollution and waste of resources are reduced; the concentration of emissions of the marine diesel engine reaches the standards and satisfies the Tier III standards.

The invention provides a method for predicting diversion ratio change of distributary channels of a two-stage bifurcated riverway in the downstream of a reservoir. The method comprises the following steps that a planar two-dimensional water flow mathematic model is established, and parameter calibration and verification are performed; the flow range from the minimum flow to maximum flow of a target river section is equally divided into multiple flow levels, and statistics is conducted on the diversion ratio of the two distributary channels at all flow levels; variation diagrams of the diversion ratio with flows of the two distributary channels are respectively drawn, and linear fitting is performed to obtain slope and an intercept; according to values of the slope and the intercept, the types of the distributary channels are defined; it is predicted that the variation trend of the diversion ratio of the two distributary channels is main waxing and distributary waning or main waning and distributary waxing. According to dynamic change indexes of the diversion ratio of the distributary channels and the flows, the distributary channel of the two-stage bifurcated riverway is divided into a flood tendency distributary channel and a water shortage tendency distributary channel, the diversion ratio of the distributary channels is dynamically related with hydrodynamic conditions, the diversion ratio change of the distributary channels of the bifurcated riverway is accurately predicted according to hydrological change characteristics of the downstream of the reservoir, and planning and design of an airway is further promoted.

The invention belongs to the electrochemistry technical field, and relates to a distributed titanium alloy pipeline electrolytic antifouling apparatus. The apparatus comprises direct current source, electrolytic anodes, flange type cathode, cables, switch elements and a titanium alloy pipeline. The positive output terminal of direct current source is provided with the switch element with electrically communication, ten electrolytic anodes are respectively arranged on the titanium alloy pipeline at intervals, the switch elements are respectively and individually connected with the electrolytic anode through cable; a flange type cathode is provided at one end of the titanium alloy pipeline, the flange type cathode enables electric connection with the cathode output terminal of the direct current source; the inner wall of the titanium alloy pipeline is treated, the electrolytic anode capable of electrolyzing seawater for generating chlorine and secondary chlorate anions effective antifouling agent can be prepared; the electrolytic anode is positioned at the connection part of the titanium alloy pipelines, the interval length of electrolyzing anode is determined by maximal flow of water and the current output capability of direct current source. The distributed titanium alloy pipeline electrolytic antifouling apparatus has the advantages of simple integral structure, flexible usage operation, low cost, good antifouling effect, long usage life and wide application scope.

The invention relates to a novel solution method facing to flight delay, which is used for researching based on an air traffic network and calculating a maximal flow by using the disappearing probability of a derivation system of a discrete time disappearing and queuing method, thereby judging whether a flight has changing possibility. The method provides the problem of solving flight delay from a network angle, leads an airplane to fly by changing a flight as much as possible under the premise of ensuring the safe flight of the airplane, reduces the loss of passengers and increases the reputation of an airline company.

The invention relates to a quick partition method of a three-dimensional medical image on the basis of video card parallel computing, belonging to the filed of medical image partitioning. In the method, firstly the basic framework of a network flow graph, which consists of nodes, end points and weighted edges, is built according to an original three-dimensional medical image; then, the logic structure of the network flow graph is built: the storage structure of the network flow graph is built so as to obtain the network flow graph which finishes practical storage; two stages of parallel relabel operation and push operation which are realized on the basis of CUDA is carried out on the network flow graph which finishes practical storage; when the excess flow value of an active node is updated to zero, the active node becomes a common node, and maximal flow from S to T can be obtained from the network flow graph; and when the capacity value in the minimum partitioning corresponding to the maximal flow is equal to the edge of the flow value, a boundary for partitioning a target organ and the background can be formed to obtain a partition result. The method of the invention can greatly improve the operating speed of the partition method in the premise of keeping high processing precision.

The invention discloses a method for determining the arrival of tidal bore based on water velocity. The method specifically comprises the following steps of: correctly mounting a radar wave flow velocity meter on the surface of a river; collecting the flow velocity data; determining whether or not to switch the flow velocity data from state 1 to state 2 according to whether the flow velocity increases; determining whether or not to switch the flow velocity data from state 2 to state 3 according to whether the flow velocity decreases; determining whether or not to switch the flow velocity data from state 3 to state 4 according to whether the flow velocity is stable; determining that whether the reason causing the flow velocity change is interference or arrival of the tidal bore according to the difference between the stabilized flow velocity after changing and the flow velocity before changing; and determining the level of the tidal bore according to the magnitude of the difference between the maximal flow velocity in the change process and the flow velocity before changing. The method provided by the invention not only can determine the arrival of a tidal bore, but also can determine the flow velocity of the tidal bore, thereby providing necessary data for forecasting the arrival time of the tidal bore to the next station, and comprehensively realizing real-time automatic tidal bore detection and warning of rivers.

The invention discloses a method and device for realizing interactive image segmentation, and a terminal. The method comprises steps that smearing locus on an original image is taken as a framework to grow to form a mark area; an input mask artwork of an image segmentation algorithm is generated, pixels of the mark area are taken as foreground points of the mask artwork, and pixels outside the mark area are taken as background points of the mask artwork; a depth image containing the target object depth information is acquired, a segmentation parameter of each pixel of the mask artwork is determined according to the depth image and the mask artwork, an undirected graph is constructed, a segmentation parameter of each pixel of the mask artwork is mapped to the undirected graph, the the undirected graph is processed according to a minimal cut-maximal flow algorithm to acquire the mask artwork after fine segmentation, and an image corresponding to the foreground points of the mask artwork after fine segmentation is acquired through segmenting the original image. The method is advantaged in that the algorithm operation time is shortened, and the image segmentation effect is improved through utilizing the image depth information.

The invention relates to a parking group inducing method and a parking group inducing device, wherein the method comprises the steps of determining alternative parking lots of a user in a target area, and obtaining an evaluation score according to an evaluation function of the alternative parking lot relative to a corresponding user; constructing a weighted bipartite graph G=(X,Y,W) with limited node capacity according to the alternative parking lots and the evaluation scores; extending the weighted bipartite graph G=(X,Y,W) with the limited node capacity, and obtaining a weighted bipartite graph G'=(X,Y,W,S,E,SY,EY,SW,EX) with weights of a function relation; calculating a network maximal flow from a node S to a node E in the weighted bipartite graph G'=(X,Y,W,S,E,SY,EY,SW,EX) with weights of the function relation, and simultaneously recording a matching relationship between the user and the parking lot on the condition that the network maximal flow is formed; and pushing a corresponding parking lot to the user according to the matching relationship between the user and the parking lot on the condition that the network maximal flow is formed.

The invention relates to a configuration design method for controlling multiple pump sources of a hydraulic system through digital and analogue combination. The configuration design method mainly comprises the following steps: (1), obtaining a flow demand Q(t), a maximal flow value Qmax and an absolute value h of a maximal flow change rate required by the hydraulic system according to action requirements of hydraulic equipment; (2), determining an optimal combination coefficient lamdaof a quantitative pump set and the discharge capacity D1 of a minimal pump in the quantitative pump set according to a theoretical formula provided by the invention; (3), determining the number m of quantitative pumps and the maximal discharge capacity Dk of the pumps according to the theoretical formula provided by the invention; and (4), determining the number n and the full discharge capacity gammaj of variable pumps. According to the invention, flow matching of a load is realized; the configuration design method has the advantages of being rapid to respond, free from overflow loss, high in transmission efficiency and continuous and adjustable in output flow; the configuration design method has the advantages of the traditional valve control system and pump control system; and furthermore, the disadvantages of being high in investment of the pump control system and high in maintenance cost are avoided.

The invention discloses a method and device for realizing interactive image segmentation, and a terminal. The method comprises steps that a geometric figure containing smearing locus on an original image is constructed and is expanded to form a mark area; an input mask artwork of an image segmentation algorithm is generated, pixels of the mark area are taken as foreground points of the mask artwork, and pixels of the original image outside the mark area are taken as background points of the mask artwork; a first segmentation parameter of each pixel is determined according to a colorful image and the mask artwork, a second segmentation parameter of each pixel is determined according to a depth image and the mask artwork, and the two types of segmentation parameters are integrated; the segmentation parameter after integration of each pixel is mapped to an undirected image, the undirected image is processed according to a minimal cut-maximal flow algorithm to acquire a mask artwork after fine segmentation, and an image corresponding to the foreground points of the mask artwork after fine segmentation is acquired through segmenting the colorful image. The method is advantaged in that the algorithm operation time is shortened, and the image segmentation effect is improved through utilizing the image depth information.

The invention discloses a self-reset current-controllable shower sprayer. The problem that stop positions of a sale sprayer is not sure after the sprayer is used for storing water and is adjusted to use can be solved. When a water faucet is opened nest time, maybe the water faucet is in a state of a maximal flow. Water of the maximal flow can be sprayed everywhere. A user can implement a rotating action to reduce water yield. After that, the user can wash hands. Then, when rotation is adjusted, the water flowed out is wasted. Therefore, after the sprayer is used completely by the user and the water faucet is closed, a torsion force spring which is arranged on the sprayer can drive a linkage outer shell under a function of an inner torsional stress. The linkage outer shell drives an operating shell body to rotate so as to enable the operating shell body to reset an initial position. An awaiting order of a minimal water yield can be prepared for the next user. The sprayer can be controlled to be in a hand-washing state of a small water field every time of an initial start. A best water-saving effect can be achieved in real significance.

A turbulence generator (8) consists of a fixed part (9) containing fixed sections (10) of an array of parallel ducts, and a movable part (14) with, for each duct, a movable section (15) with a diameter smaller than the minimal diameter of the adjacent fixed section (10). If the overall rate of the stock flow is large a maximal flow velocity sufficient for producing a required degree of turbulence can be reached with the fixed part (9) alone and the movable part (14) is removed from the flow path. Where the flow rate is too small for that the movable part (14) is placed in the flow path and the minimal overall cross section area reduced. This results in an increase of the maximal velocity of the flow which is then again sufficient to engender turbulence of the desired degree and intensity. In this way two different ranges of paper which require different ranges of flow rates can be produced.

The invention discloses a method and device for realizing interactive image segmentation, and a terminal. The method comprises steps that a geometric figure containing smearing locus is constructed and is expanded to form a mark area, and an area of interest containing the mark area is determined; an input mask artwork of an image segmentation algorithm is generated, pixels of the mark area are taken as foreground points of the mask artwork, and pixels of the area of interest outside the mark area are taken as background points of the mask artwork; a first segmentation parameter of each pixel is determined according to a colorful image and the mask artwork, a second segmentation parameter of each pixel is determined according to a depth image and the mask artwork, and the two types of segmentation parameters are integrated; the segmentation parameter after integration of each pixel is mapped to an undirected image, the undirected image is processed according to a minimal cut-maximal flow algorithm to acquire a mask artwork after fine segmentation, and an image corresponding to the foreground points of the mask artwork after fine segmentation is acquired through segmenting the colorful image. The method is advantaged in that the algorithm operation time is shortened, and the image segmentation effect is improved in combination with the depth information of the image.

The invention provides a method and a device for controlling network data flow. The method comprises the steps of receiving network messages; performing flow updating on the total flow received by the system and the flow of a flow list item, corresponding to a currently received network message, in a flow list; if both the relation between the total flow received by the system and a preset maximal system flow threshold, and the relation between the flow of the selected flow list item in the flow list and the preset maximal flow threshold of the flow list item accord with predetermined requirements, adding the selected flow list item into a blacklist; and processing the message corresponding to the flow list item added into the blacklist according to a predetermined manner. According to the method and the device provided by the invention, in the case that abnormal flow occurs at part of nodes in the network, the source of the abnormal flow can be accurately identified, and the abnormal flow can be effectively controlled.

The invention discloses a buffering system for solving scarce drainage capability of a central drainage ditch of a tunnel. A central line of the central drainage ditch is taken as the longitudinal direction, a plurality of longitudinally arranged overflow wells are formed at edges of the central drainage ditch, buffering ponds are formed at positions, corresponding to the overflow wells, of the outer sides of the tunnel, the overflow wells are communicated with the buffering ponds via overflow pipes, the buffering ponds are connected with the central drainage ditch via drainage pipes, drainage pumps are mounted in the buffering ponds, and a water outlet of each drainage pump is connected with a water inlet of the corresponding drainage pipe. The invention further discloses a control method of the buffering system. According to water levels, in the central drainage ditch, at the positions of the overflow wells, valves on overflow valves are turned off or turned on, and valves on the drainage pumps and the drainage pipes are turned on or turned off at the same time to keep water volume in the central drainage ditch to be within the maximal flow value of the central drainage ditch. By the aid of a temporary water storage function of the buffering ponds, time-sharing distribution of the water volume in the central drainage ditch can be realized, the central drainage ditch is ensured to drain away water smoothly, and safety of the tunnel is facilitated.