240results about How to "Avoid performance loss" patented technology

For lasting stable vapor deposition of a material for a long term, the present invention provides the vapor deposition crucible comprising an evaporation chamber defined by a container part of the material and an orifice plate controlling vapor pressure of the material evaporated therein, and a pressure-controlling chamber defined in a space between the orifice plate and a discharge plate through which the material is discharged to the exterior of the vapor deposition crucible. A protrusion extending outwardly from the pressure-controlling chamber and having a second opening on its distal end may be provided on the upper surface of the discharge plate, and a heater may be provided on the side surface of the protrusion to oppose the side surface of the protrusion with an insulation mechanism provided at a position higher than the heater but lower than the second opening. In the vapor deposition crucible, temperature of the pressure-controlling chamber may be kept higher than that of the evaporation chamber by the other heaters.

The invention relates to a message retransmission method and a system based on a multi-core architecture. The method comprises the following steps: acquiring a data packet in the Internet; when the data packet is a tunnel link data packet, decapsulating the data packet to obtain an IP data packet; and carrying out Hash operation on the quintuple of the IP data packet, computing according to the obtained Hash value and Hash table size thereof and the number of CPUs in the multi-core CPU to obtain the corresponding CPU, labeling the Hash value into the IP data packet, and transmitting the labeled IP data packet to the CPU. The invention increases the utilization rate of fixed network equipment in the wireless Internet, realizes lock-free design of shared resources, and is applicable to the wireless Internet.

The fantasy sports contest application of the present invention alerts the user of necessary roster changes before an upcoming fantasy sports competition. The fantasy sports contest application may evaluate the user's team roster before an upcoming fantasy sports competition to ensure that all roster spots on the team roster are filled with athletes available for real-life competitions. The fantasy sports contest application may also identify roster changes and roster transactions that may be beneficial to a user's fantasy sports contest team roster.

The fantasy sports contest application may recommend roster changes and roster transactions to the user by evaluating the performance of athletes using performance criteria. The performance criteria can be based on the past performance of athletes, either overall, or for certain situations. The performance criteria may be predefined by the system, user-editable, or any suitable combination thereof.

The invention discloses a liquid cooling temperature control and management method of a power lithium ion battery. The liquid cooling temperature control and management method comprises the steps of: 1) acquiring temperature and current; 2) obtaining a highest temperature value, a lowest temperature value, greatest temperature difference and liquid cooling system inlet and outlet temperature difference; 3) judging whether the current is large or not and computing a working state 1; 4) judging whether the temperature of the battery is high or not, computing a working state 2; 5) judging whether temperature difference of the battery is too great or not and computing a working state 3; 6) judging whether the outlet temperature of a battery pack is too high or not and computing a working state 4; 7) judging whether the temperature difference of circulating medium at the inlet and outlet of the battery pack is too great or not and computing a working state 5; and 8) comparing the computed working state 1, the working state 2, the working state 3, the working state 4 and the working state 5 to obtain a working state with the best heat dissipation effect for setting. The liquid cooling temperature control and management method of the power lithium ion battery solves the problems that the temperature of the battery is too high and the local temperature difference is too great, and has the beneficial effects that the performance of the battery is improved and the service life of battery is prolonged.

A mattress for a bed having a frame for supporting the mattress and side rails, includes a non-puncture resistant cover with an interior surface, and a core disposed adjacent the interior surface. The core includes a body defining a plurality of mounting locations, and further includes a plurality of self sealing gas containers that are respectively disposed within the plurality of mounting locations. Accordingly, the overall height of the mattress may be used by the gas containers since a puncture resistant foam layer is not necessary.

The invention provides a compressed spectrum sensing method based on autocorrelation matrix reconstitution and mainly solves the problem that an existing sensing algorithm is high in sampling speed and large computation overhead. The compressed spectrum sensing method comprises that a secondary user obtains an observation sequence of a frequency spectrum environment through compressed sensing and obtains an autocorrelation matrix estimated value of Nyquist sampling by utilizing autocorrelation vector quantity of a autocorrelation matrix reconstitution Nyquist sample sequence of the observation sequence; a multi-signal classification MUSIC algorithm is adopted to obtain an estimated value of occupied channel number according to a characteristic value of the autocorrelation matrix estimated value; a characteristic spectrum is constructed according to the characteristic value and the estimated value of the occupied channel number, spectral amplitude values corresponding to characteristics of channels are added to obtain a sum, and mark numbers of the occupied channels are judged. By means of the compressed spectrum sensing method, the sampling speed of a secondary user receiving machine can be reduced, algorithm complexity at the reconstitution end is low, and spectral amplitude occupying situation in a cognitive radio system can be judged quickly.

The invention discloses a method for classifying operated load in a virtual machine under cloud computing environment. The method includes firstly acquiring monitoring parameters in 5 minutes of load operation and subjecting the monitored parameters to normalization processing; classifying load monitored into four categories such as CPU (central processing unit)-intensive load, memory intensive load, I/O (input/output) intensive load and network intensive load by means of TSRSVM (training sets refresh SVM); providing corresponding customized optimizing strategies for operation systems which running the four categories of intensive loads, and monitoring operating state of the systems through a performance comparison device; indicating that classification strategies are correct if performance of the systems is improved, otherwise, indicating that the classification strategies are incorrect. By the method, accuracy of load classification is high and system performance loss is low.

The invention discloses an intelligent charging pile peak-hour-avoiding charging method and an intelligent charging pile system. The intelligent charging pile peak-hour-avoiding charging method comprises the following steps that S1, charging demand information set by a user is received, wherein the charging demand information comprises vehicle use time, target electric quantity and start time; S2,the current remaining electric quantity information of a vehicle is acquired, and the charging time required for charging is calculated to reach the target electric quantity according to the chargingpile power; and segmented electricity price information of the location of the time span from the starting time to the vehicle using time, and the segmented electricity price information is arrangedfrom low to high to obtain corresponding time segments; S3, a charging time period scheme is selected according to the sequence from the lower segment price to the next lower segment price until the total time of the selected charging time period scheme is equal to the required charging time period; and S4, charging operation is implemented according to the selected charging time period scheme. According to the set charging conditions, the intelligent charging pile peak-hour-avoiding charging method automatically plans a peak-hour-avoiding charging time period scheme, the power grid burden ofpeak power consumption is reduced, and the charging cost of the user is reduced.

The fuel cells (16, 18) adjacent or near the end plate (15) of a fuel cell stack (14) are warmed either by (a) a heater wire (48) within the fuel cell (16) adjacent to the end plate, (b) heater wires (53) are disposed in a heater element (52) located between the end plate and the fuel cell closest to the end plate (15), (c) one or more heaters (56) are disposed in holes (55) within the end plate (15), (d) electric heating elements (59) on a surface of the end plate (15), or (e) a catalytic heater (61) disposed on the surface of the end plate. The fuel cells (16, 18) may be heated before or during operation at sub-freezing temperatures to prevent loss of fuel cell performance, or may be heated after operation at sub-freezing temperatures to restore fuel cell performance.

The invention discloses a warrantable privacy protection space crowdsourcing task distribution system and method, and the system comprises an SC server, an encryption service provider, a space task requester, and workers. The encryption service provider generates a secret key, and employs a Paillier password and ElGamal password system. The space task requester creates a space task, and returns the position of the task to the SC server. The SC server encrypts the position of the task, and each worker calculates the distance between the position of the task and the position of the worker. The speed of each worker is encrypted and transmitted to the SC server, and each worker calculates the travel time of his own, and encrypts the travel time and transmits the encrypted travel time to the SC server. The SC server calculates the winning workers through the encryption service provider, and the encryption service provider enables the winning worker set comprising a plurality of winning workers to be encrypted and returned to the SC server. The SC server encrypts the position of the task, and broadcasts the encrypted position of the task to all workers, and the winning workers arrive at the specified position to execute the task. According to the invention, the system achieves the double-side privacy protection in the space crowdsourcing, greatly reduces the calculation, and can guarantee that the task is accepted at high probability.

The invention discloses a task distribution system model of privacy protection space crowdsourcing. The task distribution system model comprises a space outsourcing server, an encryption service providing unit, a space task request unit and a worker mobile terminal; the space task request unit is used for creating the space task, and transmitting the task information to the space crowdsourcing server; the space outsourcing server is used for distributing the task to the worker mobile terminal; the encryption service providing unit is used for providing the privacy protection task distribution management for the space task request unit, the space crowdsourcing server and the worker mobile terminal. Furthermore, the invention further discloses a realization method of the system model. The system model firstly realizes the dual-party privacy protection in the space crowdsourcing, not only protects the privacy of the worker, but also protects the task privacy. The efficient task distribution is performed in the space crowdsourcing, and the privacy protection on two aspects of the worker and the task is provided.

The invention provides a malicious code analysis method and system under a Linux platform. According to the method and the system provided by the invention, dynamic loading can be realized by using an LKM (Loadable Kernel Module) technology, a position of intercepting system call is positioned between a VFS (Virtual File system) layer and a detailed file system so as to acquire more information related to file operation and provide more accurate and useful monitoring information. The system call can be intercepted without the need of correcting a system call table, so that the potential safety hazards brought by the traditional method of correcting the system call table are avoided; a shared memory mechanism is adopted to increase the communication speed of a kernel module and a user progress, and the data volume of communication transmission; key files and progresses needing to be monitored are selected by a user so as to improve the usability, the flexibility and the high efficiency of the system, and the demands of the user on malicious code analysis are well met; the selected malicious code progresses and a plurality of important key files are monitored so as to avoid great performance loss of the system and improve the operation speed of the analysis system.

The invention belongs to the technical field of radar target detection tracking, and particularly relates to a complex likelihood ratio track-before-detect method based on dynamic planning. The method includes the following steps of receiving radar echo data by means of radar, preprocessing the radar echo data to obtain a preprocessed image, carrying out track-before-detect by means of a dynamic planning method according to the preprocessed image to obtain a target track, building a complex likelihood ratio function according to the preprocessed image when track-before-detect is carried out in the dynamic planning method, and building a value function of the dynamic planning method according to the complex likelihood ratio function.

The invention discloses a method and device for realizing downlink data transmission by utilizing an active antenna system. The method is characterized in that: constituting wave beams, the uplink receiving power is larger than a preset threshold, of all wave beams in physical resource of a user into a downlink activation wave beam collection of the user; according to the number of the wave beams in the downlink activation wave beam collection of the user, sending downlink data of the user by utilizing open loop diversity technique or directly sending the downlink data of the user in the downlink activation wave beam collection; and sending the downlink data by utilizing a space division multiple access mode in downlink activation wave beam collections of matched users, wherein the users, the downlink activation wave beam collections do not have intersections, form the matched users. Multi-beam activation determination and the pen loop diversity sending and combined and the method is utilized to solve the problem of related interference in vertical wave beams or horizontal wave beams, thereby preventing performance loss of a downlink data channel due to interference in the LTE system, and improving data traffic and system performance.

The application discloses a rate matching method. The method comprises the following steps: network equipment determines transmission bit rate R, wherein R is equal to K/M, K relates to the length of an information bit, M relates to the length of a target code, and K and M are positive integers; if the transmission bit rate R is greater than or equal to a first bit rate threshold, the network equipment determines to adopt a shortening mode for a bit sequence of which the length is N, and if the transmission bit rate R is smaller than the first bit rate threshold, the network equipment determines to adopt a punching mode for the bit sequence of which the length is N, N is the length of a mother code and is a positive integer; the network equipment performs Polar coding for the bit sequence of which the length is N by adopting a polar code to obtain a first coded sequence of which the length is N, and the network equipment performs shortening or punching for the first coded sequence to obtain a second coded sequence of which the length is M. The application also provides rate matching equipment corresponding to the method. By adopting the above method and equipment, the punching/shortening mode can be flexibly selected, and the performance loss caused by the punching/shortening process can be overcome.

This invention discloses a method for realizing AFC including: carrying out multi-path search by the precursor part and the message part of a channel to get multi-path information to be used to de-spread the control part and the data part to get information of the control part and the data part then to carry out frequency deviation estimation to the de-spread information of the control part to get the deviation information, then carrying out frequency deviation correction to the de-spread information of the control part and the data part by the deviation frequency to realize AFC, a device for realizing automatic frequency control is also disclosed.

The invention discloses a neodymium iron boron magnetic material with the excellent magnetic performance. The neodymium iron boron magnetic material with the excellent magnetic performance is formed by a main-phase alloy and a secondary-phase alloy through mixing. The main-phase alloy comprises, by weight, 64.5-68.5% of iron, 1.0-1.2% of boron, 30.2-34.3% of neodymium, 0.05-0.4% of niobium and 0.1-0.4% of aluminum. The secondary-phase alloy comprises, by weight, 50.8-54.2% of iron, 0.8-1.2% of boron, 18.9-21.1% of neodymium, 12.8-16.3% of praseodymium, 8.9-11.1% of dysprosium and 0.8-1.2% of copper. The neodymium iron boron magnetic material prepared with the method has the excellent magnetic performance and high intrinsic coercivity.