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Online since: October 2011
Authors: Tie Jun Wu, Hong Jun Wang
The simulation results compared with the experimental data, to get results as follows: the simulation results were basically consistent with the experimental data.
In this paper, the material of crankshafts is QT600. this material has medium to high strength, medium ductibility and plasticity, good abrasive resistance and vibration reduction, and higher integrated performance.
In this paper, the material of crankshafts is QT600. this material has medium to high strength, medium ductibility and plasticity, good abrasive resistance and vibration reduction, and higher integrated performance.
Online since: March 2015
Authors: Jing Li, Pan Zhu, Lin Min Wu
A-SMGCS utilizes multiple surveillance sources such as ADS-B (Automatic Dependent Surveillance–Broadcast), MLAT (Multilateration), PSR (Primary Surveillance Radar), SSR (Secondary Surveillance Radar), SMR (Surface Movement Radar), and other fusion data, and provide routing, guidance and surveillance for the control of aircraft and vehicles in order to maintain the declared surface movement rate under all weather conditions within the aerodrome visibility operational level (AVOL), especially in low visibility, while maintaining the required level of safety[3].
2.Goals for the system
A-SMGCS is a kind of software that makes use of all kinds of data like sensors data,fusion data,alarms data,flight plan, meteorological data,to surveillance and control the traffic on the aerodrome[4].
The main functions of our A-SMGCS consist of: 1) Real-time presentation of surveillance sensor data and fusion data ,such as ADS-B, MLAT, SMR, PSR/SSR; 2) Real-time display runway incursion, taxiway alerting, alerting for loss of data and so on; 3) Maintenance and check of flight plan,meteorological data and stand information; 4) Recording and playback of surveillance information.
In addition to the main functions provided by A-SMGCS described above,functions of data acquisition,fusion and communication with other systems must be considered.Concretely speaking, when monitoring the real-time traffic state on the aerodrome, our A-SMGCS terminal mainly obtains single-sensor data,such as ADS-B,SMR,MLAT,SMR,PSR/SSR from data pretreatment system,and obtains fusion data from fusion system[5];when processing conflict alert information,the terminal obtains corresponding alert information from alert system,after the alert information are processed,the alert information could be feedback to alert system;flight plan and meteorological data of the terminal come from flight plan system and meteorological system. 3.Key technologies 3.1 Cache design of aircraft targets Receipt of track data in our terminal is divided into two categories: data form single sensor and fusion data.
The terminal firstly decodes data through decoder interface after accepting the two types of data, secondly, the system stores the track data in the cache of the aircraft target.Meanwhile,our system renders the aircraft target according to its cache.Therefore,it is extremely important to design targets cache that is easy to extend and stable,and figure 1 shows the design of targets cache for airplanes.
Such kind of design is beneficial to target data source expand or target data layer,and system extension in the future. 3.2 Efficiency improvement of a large number of targets When the number of aircraft targets on the aerodrome exceed 400 at the same time,the efficiency of system will reduce,we analyze the reason for efficiency reduction,and find that because the work to render each tag for each aircraft is time consuming.Therefore,we provide solution with respect to: ① Increase efficiency of rendering for single tag:we render target by lightweight component, and the tag inherits Class Lightweight Component, which applies double buffer in implementation.Therefore,we could raise the efficiency and stability of drawing. ② Drawing range: we only draw the target on the visible region or nearby region,which not only cuts down the workload of massive drawing of needless, but also raises the drawing efficiency for the entire system.
The main functions of our A-SMGCS consist of: 1) Real-time presentation of surveillance sensor data and fusion data ,such as ADS-B, MLAT, SMR, PSR/SSR; 2) Real-time display runway incursion, taxiway alerting, alerting for loss of data and so on; 3) Maintenance and check of flight plan,meteorological data and stand information; 4) Recording and playback of surveillance information.
In addition to the main functions provided by A-SMGCS described above,functions of data acquisition,fusion and communication with other systems must be considered.Concretely speaking, when monitoring the real-time traffic state on the aerodrome, our A-SMGCS terminal mainly obtains single-sensor data,such as ADS-B,SMR,MLAT,SMR,PSR/SSR from data pretreatment system,and obtains fusion data from fusion system[5];when processing conflict alert information,the terminal obtains corresponding alert information from alert system,after the alert information are processed,the alert information could be feedback to alert system;flight plan and meteorological data of the terminal come from flight plan system and meteorological system. 3.Key technologies 3.1 Cache design of aircraft targets Receipt of track data in our terminal is divided into two categories: data form single sensor and fusion data.
The terminal firstly decodes data through decoder interface after accepting the two types of data, secondly, the system stores the track data in the cache of the aircraft target.Meanwhile,our system renders the aircraft target according to its cache.Therefore,it is extremely important to design targets cache that is easy to extend and stable,and figure 1 shows the design of targets cache for airplanes.
Such kind of design is beneficial to target data source expand or target data layer,and system extension in the future. 3.2 Efficiency improvement of a large number of targets When the number of aircraft targets on the aerodrome exceed 400 at the same time,the efficiency of system will reduce,we analyze the reason for efficiency reduction,and find that because the work to render each tag for each aircraft is time consuming.Therefore,we provide solution with respect to: ① Increase efficiency of rendering for single tag:we render target by lightweight component, and the tag inherits Class Lightweight Component, which applies double buffer in implementation.Therefore,we could raise the efficiency and stability of drawing. ② Drawing range: we only draw the target on the visible region or nearby region,which not only cuts down the workload of massive drawing of needless, but also raises the drawing efficiency for the entire system.
Online since: October 2015
Authors: Marta Kadłubek
The RFID indetifier, radio tag, include a microchip with a joined antenna, and if left on a package, it transmits data.
The RFID gates fitted in the centre read the data from the containers with the goods, using a radio technique.
Particularly highlighted are data, such as: message sender, sending date, subject.
It enables the retrieval of data on objects using so called searching scenarios.
Xue, RFID data management: challenges and opportunities, IEEE International Conference on RFID, 2007
The RFID gates fitted in the centre read the data from the containers with the goods, using a radio technique.
Particularly highlighted are data, such as: message sender, sending date, subject.
It enables the retrieval of data on objects using so called searching scenarios.
Xue, RFID data management: challenges and opportunities, IEEE International Conference on RFID, 2007
Online since: March 2015
Authors: Zhi Ping Qiu, He Chen Qiu
The uncertain effects will lead to reduction of performance.
When the uncertain effects occur within strong-coupling, nonlinear, fast time-varying system at the same time, the reduction effects will be amplified and consequently lead to structure failure.
But this method requires vast sample data in order to obtain accurate distributions of uncertainty factors.
Unfortunately, the sample data are extremely finite in real problems.
Furthermore, the density of the membrane structure has descended considerably after optimization, which result in the reduction of mass.
When the uncertain effects occur within strong-coupling, nonlinear, fast time-varying system at the same time, the reduction effects will be amplified and consequently lead to structure failure.
But this method requires vast sample data in order to obtain accurate distributions of uncertainty factors.
Unfortunately, the sample data are extremely finite in real problems.
Furthermore, the density of the membrane structure has descended considerably after optimization, which result in the reduction of mass.
Online since: June 2025
Authors: Mohamed M. Mahmoud, Adel Mohamed H. Elmetwalli, Asaad Derbala, El-Khatib S. Ismail
The possibilities for rainfall, the reservoir preservation and water-related reduction were determined utilizing the Netuno programming tool [2].
Water-efficient equipment installation showed potential for a 28.9% reduction in sewage [6].
· TSS: Measured to determine the reduction in suspended particles
These post-filtration values are within acceptable limits for pre-treatment, showing an effective reduction in BOD and COD levels through filtration.
The data cleared that the total cost was about 780 EPG (15.6 $).
Water-efficient equipment installation showed potential for a 28.9% reduction in sewage [6].
· TSS: Measured to determine the reduction in suspended particles
These post-filtration values are within acceptable limits for pre-treatment, showing an effective reduction in BOD and COD levels through filtration.
The data cleared that the total cost was about 780 EPG (15.6 $).
Online since: July 2011
Authors: Yi Lin Chi, Xing Wu, Yi Du
The sorted data of group is recorded as the following form.
Because of the duplication between the data, the processed data number r is less than the sampling frequency fz.
Training data and testing data should be constructed as the same time and randomly selected. 2) Data normalization.
As shown on Table 3, with the same testing sample data and training data, using different kernel functions will lead to different correct recognition rate.
The rest 1/3 of the total data is for testing.
Because of the duplication between the data, the processed data number r is less than the sampling frequency fz.
Training data and testing data should be constructed as the same time and randomly selected. 2) Data normalization.
As shown on Table 3, with the same testing sample data and training data, using different kernel functions will lead to different correct recognition rate.
The rest 1/3 of the total data is for testing.
Online since: April 2014
Authors: Xin Zhao, Ming Zhu Sun, Ming Shan Zhao, Xin Guo
After setting appropriate conditions, we can get analysis data.A software is made to simulate the flow process dynamically based on the data of every static analysis.
Figure 1.The position data and vector data 2.
Adding vector data to the corresponding node.
Figure 1 shows the analysis result of one static state, the position data and vector data are key point in the analysis.
Figure 7 shows the curve fitted by ten sets of data.
Figure 1.The position data and vector data 2.
Adding vector data to the corresponding node.
Figure 1 shows the analysis result of one static state, the position data and vector data are key point in the analysis.
Figure 7 shows the curve fitted by ten sets of data.
Online since: May 2014
Authors: Antonio Contreras-Cuevas, Ricardo Galván-Martínez, O. Vega-Becerra, S.L. Hernández-Mejía
Significant reduction in Charpy-V impact resistance with the number of weld repairs was observed overall in the weld fusion line.
The data were analyzed by the X'PERT PRO software and subprograms and X'PERT STRESS DATA COLLECTOR.
Grain size reduction in the second repair is attributed to the presence of the finest weld beads in all the repairs that permit better distribution of the extra heat input, generating more grain refinement.
The increase in Vickers hardness in the first repair is attributable to the grain size reduction observed in Fig. 4, which can be related to the grain refinement due to heat input from the welding process.
Significant reduction in Charpy-V impact resistance with the number of weld repairs was observed overall in the weld fusion line.
The data were analyzed by the X'PERT PRO software and subprograms and X'PERT STRESS DATA COLLECTOR.
Grain size reduction in the second repair is attributed to the presence of the finest weld beads in all the repairs that permit better distribution of the extra heat input, generating more grain refinement.
The increase in Vickers hardness in the first repair is attributable to the grain size reduction observed in Fig. 4, which can be related to the grain refinement due to heat input from the welding process.
Significant reduction in Charpy-V impact resistance with the number of weld repairs was observed overall in the weld fusion line.
Online since: May 2012
Authors: Yang Zhang, Qing Zhang
The analysis on concrete acoustic emission technology
We have done sound emission data receiving of the concrete cracking process through sound emission receiver apparatus, and have got the sound emission data curve, and through which judge the destructive condition of the concrete, and adopted the reinforcement measures of the concrete according to the results we’ve got, thus we have to analysis the data we received.
However, the sound emission phenomenon of the concrete material is a very complex process, the development situation of the inner crack is also very complex, which need a large amount of data for the study and establish the sound emission data model and formula.
The sound emission technology data curve of the concrete should be improved In the process that we apply the sound emission technology to the testing of practical engineering concrete material, the noise will occur, which would disturb the sound emission data curve, thus we have do get rid of the noise before we analyze the sound emission curve, the sound emission data we got will reflect the real condition of the concrete material.
Researchers had done little work on the processing work of concrete sound emission data.
The researchers should adopt many ways to get rid of the noise of the concrete sound emission signals, and compare which one is will eliminate the noise effectively, the curve after noise reduction would truly reflect the stress effect of the real constructions, and can establish the computer software programme by the results and provide service for the actual engineering data.
However, the sound emission phenomenon of the concrete material is a very complex process, the development situation of the inner crack is also very complex, which need a large amount of data for the study and establish the sound emission data model and formula.
The sound emission technology data curve of the concrete should be improved In the process that we apply the sound emission technology to the testing of practical engineering concrete material, the noise will occur, which would disturb the sound emission data curve, thus we have do get rid of the noise before we analyze the sound emission curve, the sound emission data we got will reflect the real condition of the concrete material.
Researchers had done little work on the processing work of concrete sound emission data.
The researchers should adopt many ways to get rid of the noise of the concrete sound emission signals, and compare which one is will eliminate the noise effectively, the curve after noise reduction would truly reflect the stress effect of the real constructions, and can establish the computer software programme by the results and provide service for the actual engineering data.
Online since: August 2012
Authors: Yu Chi Wu, Meng Jen Chen, Fu Hsiang Chi, Jin Yuan Lin, Chao Shu Chang
The data acquired by the power meters will be sent, through RS-485 and ZigBee wireless communication, to the TCP/IP Converter to update the data on the remote server.
In the first step, initialize LCD, energy data records, EEPROM, Serial and RTC.
The measured data later on will be sent to LCD for display, and through RS-232 it will be sent to PC or remote server.
The measured data by the developed power meter are sent to the TCP/IP converter via ZigBee, then the data are sent to the remote server.
The server records the received data to a file.
In the first step, initialize LCD, energy data records, EEPROM, Serial and RTC.
The measured data later on will be sent to LCD for display, and through RS-232 it will be sent to PC or remote server.
The measured data by the developed power meter are sent to the TCP/IP converter via ZigBee, then the data are sent to the remote server.
The server records the received data to a file.