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703 results about "Positive correlation" patented technology

A perfectly positive correlation means that 100% of the time, the variables in question move together by the exact same percentage and direction. A positive correlation can be seen between the demand for a product and the product's associated price.

Multilink self-adaptation data transmission method and system

The invention belongs to the technical field of network transmission and particularly relates to a multilink self-adaptation data transmission method and system. The method comprises the steps of: initially detecting the bandwidth value of each link, and dynamically detecting and regulating the bandwidth of each link by using 90% of a theoretical bandwidth value as the actual data transmission rate of each link. The system comprises a network transmission quality detecting module, a link transmission bandwidth regulating module and a data shunting module, wherein the network transmission quality detecting module is used for dynamically detecting the states of a network; the link transmission bandwidth regulating module is used for regulating the real-time transmission bandwidth value of each link according to positive correlation and network transmission quality; and the data shunting module is used for determining packet transmission links to a client side according to information in different packets. By means of the method and the system provided by the invention, the link resources of a user can be sufficiently utilized to provide higher bandwidth for the user, meanwhile, the detection and the regulation of the bandwidth of each link ensure that higher bandwidth utilization rate can be achieved. The invention truly realizes multilink bandwidth fusion.
Owner:FUDAN UNIV

Adaptive stream media playing method, apparatus, system and mobile terminal

The invention discloses a playing method, a playing device, a playing system and a mobile terminal for self-adaptive stream media, and the method comprises the following steps: a media server dynamically detects network transmission quality; the media server adjusts video quality of a stream media through a positive correlation relation according to the network transmission quality; and the media server issues the adjusted stream media to a client end for playing. The self-adaptive stream media playing device comprises the media server which comprises the following modules: a network transmission quality detecting module, which is used for dynamically detecting the network transmission quality; a stream media quality adjusting module, which is used for adjusting the video quality of the stream media through the positive correlation relation according to the network transmission quality; and a stream media issuing module, which is used for issuing the adjusted stream media to the client end for playing. The self-adaptive stream media playing method, device, system and mobile terminal can ensure the quality of videos for users to watch as better as possible, simultaneously can ensure the playing fluency by reducing transmission data amount when the network is congested, thus bringing good online watching experience to users.
Owner:YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD

Templated integration system and method for medical information system data

The invention provides a templated integration system and method for medical information system data and relates to the technical field of medical industry data integration. During the process of medical information system data integration, combined with target data standards and aimed at medical information system features (including manufacturers and versions, etc.), a reusable medical information system data integration template is established so as to realize data integration of different medical information systems (such as HIS, LIS, RIS, EMR,PEIS, etc.) Through solidification of special data set and the data conversion rules thereof, a reusable template for a certain medical information system during the process of multiple medical institution data integration is formed; at the same time, the different system templated integration process will enhance the adaptability of the template; a positive correlation between the reuse rate and completeness of the template is established; depending on the continuously improved and optimized template library resource, the implementation difficulty can be effectively reduced, the data integration efficiency can be increased, and the efficient and high quality development of medical information system integration programs is guaranteed.
Owner:BEIJING RUISOFT TECH CO LTD

High-speed aircraft lifting surface aerodynamic heating structure multidisciplinary optimization design platform

The invention relates to a high-speed aircraft lifting surface aerodynamic heating structure multidisciplinary optimization design platform belonging to the technical field of modern high-speed aircraft designs. In the invention, by aiming at the demands of lifting surface heat vibration analysis in an aerodynamic heating environment when a high-speed aircraft lifting surface is designed and considering the positive correlation among aerodynamic heating structures, an aerodynamic heating structure integrated analysis method including aerodynamic heating calculation, transient heat conduction analysis, structural heat model analysis and non-constant aerodynamic force and heat vibration analysis is researched, and the aerodynamic heating structure multidisciplinary optimization design taking the most dangerous heat vibration speed as the constraint and taking the lifting surface structural quality as a target function is researched to achieve the goal of the optimization design on the high-speed aircraft lifting surface. The invention breaks through the problem that the multidisciplinary design optimization is carried out without combining with the influence of three aspects of aerodynamic heating on the structure in the traditional high-speed aircraft design, provides a set of high-speed aircraft lifting surface aerodynamic heating structure optimization design methods and waysand has the advantages of simple scheme and high efficiency.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Academic influence cooperative sequencing method of nodes in scientific and technical literature heterogeneous network

InactiveCN104133843AAvoid Node InfluenceAvoid the phenomenon of positive in-degree correlationWeb data indexingSpecial data processing applicationsNODALTechnical literature
The invention discloses an academic influence cooperative sequencing method of nodes (papers, authors and periodicals/ conference) in a scientific and technical literature heterogeneous network. By aiming at the heterogeneity of the scientific and technical literature network, according to the method provided by the invention, two stages of random walk are adopted for calculating and sequencing the academic influence of the nodes in the scientific and technical literature, wherein the two stages of the random walk are respectively the random walk driven by the node network topology on the scientific and technical literature heterogeneous network and the random walk driven by the academic type in a minimum network mode of the scientific and technical literature network; the weight of each edge is calculated in the scientific and technical literature heterogeneous network for configuring the random walk driven by the node network topology; and according to the minimum network mode of the scientific and technical literature heterogeneous network, an average edge betweenness of various relation edges in different fields is counted, a propagation factor is calculated, and the rand walk driven by the node academic type is configured. The method provided by the invention solves the problems caused by the heterogeneity of the heterogeneous network and avoids phenomena of node influence and in-degree positive correlation, so that the sequencing result is relatively accurate.
Owner:FUZHOU UNIV

Distribution network single-phase grounding section positioning method based on fault phase voltage and current abrupt change

The invention provides a distribution network single-phase grounding section positioning method based on fault phase voltage and current abrupt change. Fault phase voltage and current of each line section are measured, the phase with lower phase voltage is determined to be the fault phase, and the higher phase voltage is determined to be the sound phase. Under a certain frequency band, the fault phase current abrupt change of the downstream of the fault point of a fault wire and a sound wire is in positive correlation to the derivative of the phase voltage abrupt change, with the correlation coefficient greater than zero. The fault phase current abrupt change of the upstream of the fault point of the fault wire is in negative correlation to the derivative of the phase voltage abrupt change, with the correlation coefficient smaller than zero. The section positioning can be realized by determining the correlation coefficient between the phase current abrupt change and the derivative of the phase voltage abrupt change of each section. The method overcomes the defect that a conventional distribution network single-phase grounding section can be positioned through communication. No communication is needed, and the method is of a bootstrapping method and can solve the problem of positioning single-phase grounding section of a power distribution network.
Owner:XI AN JIAOTONG UNIV +2

High-accuracy geomagnetic vector measurement method and device

A high-accuracy geomagnetic vector measurement method is characterized in that a vertical additional magnetic field and a horizontal additional magnetic field which have the same intensity but different directions are added to the position of a probe of a high-accuracy total-field magnetometer; a geomagnetic field without additional magnetic fields and a resultant magnetic field with an additional forward magnetic field and an additional reversed magnetic field are measured respectively; and then, each component, including a vertical component Z, a horizontal component H, a geomagnetic inclination I and a declination D, of a geomagnetic vector can be computed, and the method is suitable for fast and high-accuracy geomagnetic vector measurement outdoors or in a fixed station. According to the method, the geomagnetic vector measuring accuracy is in positive correlation with the accuracy of the matched magnetometer, and the high-accuracy total-field magnetometer is superior to a fluxgate three-component magnetometer with 10 nT of measuring errors. A high-accuracy geomagnetic vector field measurement device comprises one group or two groups of field coils and a tripod, the field coils are added to the outside of the high-accuracy total-field magnetometer probe, and the field measurement device is matched with the high-accuracy total-field magnetometer and used for rapidly measuring each component of the geomagnetic vector outdoors or in the fixed station.
Owner:高建东

Discharging power source, sputtering power source, and sputtering device

A discharging power supply according to the invention comprises: a direct current power supply unit; a control unit for controlling an output of the direct current power supply unit; and a vibrating current generation unit having a capacitance connected in parallel with a pair of outputs from the direct current power supply unit and an inductance connected to at least one of the pair of outputs, wherein the discharging power supply outputs discharging power via the vibrating current generation unit, the control unit controls the direct current power supply unit so that current outputted from the direct current power supply unit does not exceed a limit current value in at least a portion of a range of voltage that can be outputted from the direct current power supply unit, and the limit current value has a positive correlation with the absolute value of the voltage in the at least a portion of the range of voltage. According to this discharging power supply, regardless of whether the discharge power is set to be high or low, discharge current exceeding the limit characteristic line can be prevented from flowing. Even if arc discharge occurs, the amplitude of the vibrating current can be kept always larger than the discharge current. Thus the vibrating current definitely falls below zero ampere, and thereby arc can be definitely quenched.
Owner:SHIBAURA MECHATRONICS CORP

Safety risk evaluation method and device, computer equipment and storage medium

The application relates to a safety risk evaluation method and device, computer equipment and a storage medium. The method comprises the steps of: acquiring a target risk evaluation parameter set corresponding to a to-be-evaluated object, wherein the target risk evaluation parameter set comprises at least two target risk evaluation parameters; acquiring risk influence degrees corresponding to current target risk evaluation parameters; calculating parameter difference values of the current target risk evaluation parameters relative to corresponding historical risk evaluation parameters; according to the risk influence degree of each target risk evaluation parameter and the corresponding parameter difference value, obtaining a first weight corresponding to each target risk evaluation parameter, wherein the risk influence degree and the first weight are in positive correlation relationship, and the parameter difference value and the first weight are in positive correlation relationship; and according to a risk score corresponding to each target risk evaluation parameter and the corresponding first weight, obtaining a target risk evaluation value corresponding to the to-be-evaluated object. By adopting the method, safety risk evaluation accuracy can be improved.
Owner:PING AN TECH (SHENZHEN) CO LTD
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