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1049 results about "Generation time" patented technology

In population biology and demography, generation time is the average time between two consecutive generations in the lineages of a population. In human populations, generation time typically ranges from 22 to 33 years. Historians sometimes use this to date events, by converting generations into years to obtain rough estimates of time.

Method for treating coking wastewater

The invention discloses a method for treating coking wastewater, which belongs to the field of wastewater treatment. The method comprises the following steps that: wastewater of a coking plant enters a regulating reservoir for the adjustment of water quality and water amount, and orderly enters a hydrolytic tank, an anaerobic tank, a preaeration tank, a preliminary sedimentation tank, an aerobic tank, a secondary sedimentation tank and a coagulation reaction tank for treatment, wherein the hydrolytic tank and the preaeration tank are filled with a bio-cord filler; the sludge of the preliminary sedimentation tank refluxes into the hydrolytic tank and the anaerobic tank respectively; a clarifying solution of the secondary sedimentation tank refluxes into the anaerobic tank; and the aerobic tank adopts a moving bed bio-film reactor. The bio-cord filler adopted in the invention has short film formation time and high biomass, does not need repeated washing, and has strong shock resistance; and the moving bed bio-film reactor can fix a large amount of nitrobacteria with long generation time, and has no the problem of blocking. The method can remove high-concentration ammonia nitrogen and organic substances in the coking wastewater, and the COD and the ammonia nitrogen of treated effluent can synchronously achieve the primary standard of the national integrated wastewater discharge standard (GB9878-1996).
Owner:NANJING UNIV

Digital certificate management method and system based on block chain

The embodiment of the application provides a digital certificate management method and system based on a block chain. The method includes: receiving a digital certificate management request; determining whether the digital certificate management request is valid according to the type and request content of the digital certificate management request; and if yes, generating a digital certificate management record corresponding to the digital certificate management request, wherein the digital certificate management record is published to the block chain, the block chain is formed by link of a plurality of blocks in sequence according to the generation time, and each block comprises the generation time, a Hash value of the current block, a Hash value of a previous block, and one or more digital certificate management records. According to the method and system, the issuing efficiency of digital certificates and the stability of a digital certificate system can be effectively improved, faults of the digital certificate management system due to failure of a single node are prevented, and the security of the digital certificate management is effectively improved.
Owner:湖南岳麓山数据科学与技术研究院有限公司

Robot joint tail end residual vibration restraining method based on input shaper

The invention discloses a robot joint tail end residual vibration restraining method based an input shaper. The robot joint tail end residual vibration restraining method based the input shaper comprises the steps that firstly, the undamped inherent frequency omega0 and the damping ratio zeta of a robot system are obtained; secondly, a linear programming problem mathematic model about the pulse amplitude parameter of the input shaper is established; thirdly, a pulse amplitude expression is solved through a lagrangian multiplier method, and the optimal solution of the pulse amplitude is workedout through iteration; fourthly, the optimal solution of the pulse amplitude and the pulse generation time are combined to form the control error optimization input shaper; and fifthly, a reference signal and the control error optimization input shaper are subjected to convolution operation, so that a novel shaping signal is obtained, and after a predicted path is planned for the novel shaping signal, the system is driven by the signal to restrain robot tail end residual vibration. According to the robot joint tail end residual vibration restraining method based the input shaper, the robustness of the input shaper is enhanced, and a process control error and a positioning error are minimized; and the predicted path is planned for the shaped signal, and thus the system lag time caused by input shaping is compensated and reduced.
Owner:SOUTH CHINA UNIV OF TECH

Method and equipment for obtaining node transmission information of transmission path

The invention provides a method and a device for acquiring node transmission information on a transmission path. The method comprises: network time of a source node and a target node are synchronized, when the source node transmits a Ping message to the target node, the transmission time of the message is recorded in the IP header option field of the Ping message; after the Ping message reaches the target node, at least one of the following information is recorded: the IP header option field which copies the transmission time to the Ping reply message, the time when the target node receives the Ping message, the time when the Ping reply message is generated, the time when the Ping reply message is transmitted, the CPU occupancy rate the memory occupancy rate, the interface type and MTU when the Ping reply is generated. At least one of the above information is transmitted to the source node; and according to the transmission time of the source node, the receiving time of the target node, the generation time and the transmission time, the delay information is calculated and CPU utilization rate, the memory occupancy rate, the interface type and the MTU are extracted. The invention can easily and effectively acquire relevant delay information system information and interface information of each node in the transmission path,.
Owner:CHINA TELECOM CORP LTD

Method for monitoring traffic in packet switched network

A method for monitoring traffic in a packet switched network. The packet switched network includes connections grouped in a single group; token buffers for respectively corresponding to the connections, and storing tokens generated at a predetermined token generation rate by the corresponding connection; a shared token pool for being shared among the connections, and storing the generated tokens therein when each token buffer of each connection is over a predetermined maximum size; and counters for respectively corresponding to the connections, and counting tokens stored in the shared token pool by a corresponding connection. The method for monitoring traffic in the packet switched network includes the steps of: a) providing data buffers for respectively corresponding to the connections and storing a packet of a contract-following connection in case of a temporary deficiency of a network resource; b) if a token buffer of a corresponding connection is over a predetermined maximum size and the shared token pool is over its own predetermined maximum size, storing tokens generated during a token generation time in the shared token pool, and controlling a count value of a corresponding counter; c) checking the count value of the corresponding counter, and selectively controlling a permitted buffer size of a data buffer of a corresponding connection upon receiving the checking result of the count value of the corresponding counter; and d) checking a token buffer of a corresponding connection and a shared token pool if a packet reaches the corresponding connection or is present in a data buffer of the corresponding connection, and selectively storing a received packet in a corresponding data buffer according to a count value of a corresponding counter if there is no token in the token buffer of the corresponding connection and the shared token pool.
Owner:SAMSUNG ELECTRONICS CO LTD

Voltage quality monitoring and perturb automatic classification method based on analysis in time-domain

Time-domain characteristic of voltage signal is analyzed due to the methods of voltage quality monitoring based on time-domain analysis and automatic classification method of disturbance; four characteristic quantities used for classifying disturbing signal of electric power quality are extracted; an automatic classification method for disturbance of electric power quality is given out based on the four characteristic quantities. The method can conclusively and automatically identify the disturbing signals of electric power, such as a harmonic wave, an inter-harmonic wave, a wave and flickering, under voltage, overvoltage, oscillation transient voltage, voltage swell and sag, momentary interruption, and the like, and mixing disturbing signals from voltage signals. The generation time can be identified and strength of the disturbing signals can be evaluated. The method is little in calculated amount, which can be realized with single chip DSP, thus especially being applicable to on-line monitoring of voltage quality. Disturbing signal of various electric power qualities and the mixing disturbing signals can be automatically identified from a plurality of recorder data of substation busbar voltage, the generation time can be identified and the strength of the disturbing signals can be evaluated.
Owner:CHINA UNIV OF MINING & TECH
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