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Online since: November 2013
Authors: Hong Peng Guo, Gan Yu Feng, Chun Xia Liu, Xiao Yi Zhang
And we predicted the agricultural sources of emissions of AN and COD with the data from 2008 to 2010.
Because these models demand high data quality, however the basic data are insufficient in China now.
Meanwhile, by inputting data from 2008 to 2010, the model will be used to predict the agricultural source pollution emissions of AN in Jilin province.
Meanwhile, by inputting data from 2008 to 2010, the model will be used to predict the agricultural source pollution emissions of COD in Jilin province.
And under the condition lacking of data, compared with farmland scale model and watershed scale model, bionic BP neural network model is more feasible.
Because these models demand high data quality, however the basic data are insufficient in China now.
Meanwhile, by inputting data from 2008 to 2010, the model will be used to predict the agricultural source pollution emissions of AN in Jilin province.
Meanwhile, by inputting data from 2008 to 2010, the model will be used to predict the agricultural source pollution emissions of COD in Jilin province.
And under the condition lacking of data, compared with farmland scale model and watershed scale model, bionic BP neural network model is more feasible.
Study on Multidimensional Intelligence for Realizing Seamless Power Supply between the Port and Ship
Online since: September 2014
Authors: Le Ming Xiao, Yan Qiong Song
And intelligently dealing with electricity bills processing, as well as seamless power supply, which realize marine energy conservation and low-carbon emissions reduction in the port, can ensure to realize uninterruptable power on-shore connection, and at the same time promote the development of intelligent port.
Introduction It can be able to realize uninterruptable power on-shore connection board the ship, through the use of seamless power supply and intelligently dealing with electricity bills processing, so as to realize the ship energy conservation and emissions reduction in port.
Power system management can be proceeded via the alarm monitoring, data monitoring and the analysis; and also can change 10.0 kV/50 Hz, 6.0 kV/50 Hz power system in harbor grid by frequency conversion to 6.6 kV/60 Hz A.C. system, and also control the power supply of better quality; more scientific measurement of electricity can be carried out according to the market price, equipment and management cost; meanwhile,running simulation and processing information, through flexible building and configuration, it can carried out that integrity of shore power equipment management, monitoring, control, protection, billing and simulation and information processing, each of which is independent on the function, so as to satisfy the requirement of high voltage level shore power access.
Computer control closed KM3 after in parallel transferring load, at this time the ship power grid has entered into a state of shore power supply, computer proceeds to real-time detect power of load board the ship and the quantity of electricity through statistic, and to store data about quantity of electricity consumption.
When shore power was connected into marine electric power system, GTO conducting, there is circulation current between shore power transformer and marine generators before the synchronization, as long as circulation current reaches a certain value, the gate control gain the control signal, GTO disconnect, and L reactor access current limit and automatic synchronization, as well as, marine generators have finished synchronization, marine generators exit, shore power transformer begins to supply power; in the case of normal circulation current, the gate can get computer time signals and the circulation current detection data signals at the same time , GTO conducting, L reactor shorted, and shore power transformer suppling power directly.
Introduction It can be able to realize uninterruptable power on-shore connection board the ship, through the use of seamless power supply and intelligently dealing with electricity bills processing, so as to realize the ship energy conservation and emissions reduction in port.
Power system management can be proceeded via the alarm monitoring, data monitoring and the analysis; and also can change 10.0 kV/50 Hz, 6.0 kV/50 Hz power system in harbor grid by frequency conversion to 6.6 kV/60 Hz A.C. system, and also control the power supply of better quality; more scientific measurement of electricity can be carried out according to the market price, equipment and management cost; meanwhile,running simulation and processing information, through flexible building and configuration, it can carried out that integrity of shore power equipment management, monitoring, control, protection, billing and simulation and information processing, each of which is independent on the function, so as to satisfy the requirement of high voltage level shore power access.
Computer control closed KM3 after in parallel transferring load, at this time the ship power grid has entered into a state of shore power supply, computer proceeds to real-time detect power of load board the ship and the quantity of electricity through statistic, and to store data about quantity of electricity consumption.
When shore power was connected into marine electric power system, GTO conducting, there is circulation current between shore power transformer and marine generators before the synchronization, as long as circulation current reaches a certain value, the gate control gain the control signal, GTO disconnect, and L reactor access current limit and automatic synchronization, as well as, marine generators have finished synchronization, marine generators exit, shore power transformer begins to supply power; in the case of normal circulation current, the gate can get computer time signals and the circulation current detection data signals at the same time , GTO conducting, L reactor shorted, and shore power transformer suppling power directly.
Online since: August 2011
Authors: Dong Ya An, Cheng Ming Li
., Ltd,20F, 258 Shimen Er Road, Shanghai 200041, China
2Research Institute of Structural Engineering and Disaster Reduction, Tongji University,1239 Siping Road, Shanghai 200092, China
aDongya_an@xd-ad.com.cn, bChengming_li@xd-ad.com.cn
Keywords: Sun Valley; elastic-plastic; contact interaction; collapse
Abstract.
This article will not list all the detailed datum.
Table 1 Comparative table of maximum response Wave peak multiple ① 1.00 2.00 3.00 5.00 8.00 10.00 12.00 15.00 20.00 The maximum displacement(m) -0.10 -0.19 -0.25 0.30 0.58 -1.51 -9.59 75.47 53.77 Displacement amplification ② 1.00 1.89 2.42 2.92 5.69 14.89 94.35 742.90 529.28 Reduction factor of displacement amplification ②/① 1.00 0.95 0.81 0.58 0.71 1.49 7.86 49.53 26.46 Maximum shear force(kN) -4971 9610 9977 -13412 -18414 -16849 -14827 -17181 -34356 Shear force amplification③ 1.00 1.93 2.01 2.70 3.70 3.39 2.98 3.46 6.91 Reduction factor of shear force amplification ③/① 1.00 0.97 0.67 0.54 0.46 0.34 0.25 0.23 0.35 Collapse (Yes or no) No No No No No No Yes Yes Yes Fig.4 Collapse process Fig.5 Top displacement curve Fig.6 The sun valley’s displacement and deformation Fig.7 The misses stress of the structure Performance analysis: (1) With the continuous increase of seismic wave peak, the seismic response is gradually increased
This article will not list all the detailed datum.
Table 1 Comparative table of maximum response Wave peak multiple ① 1.00 2.00 3.00 5.00 8.00 10.00 12.00 15.00 20.00 The maximum displacement(m) -0.10 -0.19 -0.25 0.30 0.58 -1.51 -9.59 75.47 53.77 Displacement amplification ② 1.00 1.89 2.42 2.92 5.69 14.89 94.35 742.90 529.28 Reduction factor of displacement amplification ②/① 1.00 0.95 0.81 0.58 0.71 1.49 7.86 49.53 26.46 Maximum shear force(kN) -4971 9610 9977 -13412 -18414 -16849 -14827 -17181 -34356 Shear force amplification③ 1.00 1.93 2.01 2.70 3.70 3.39 2.98 3.46 6.91 Reduction factor of shear force amplification ③/① 1.00 0.97 0.67 0.54 0.46 0.34 0.25 0.23 0.35 Collapse (Yes or no) No No No No No No Yes Yes Yes Fig.4 Collapse process Fig.5 Top displacement curve Fig.6 The sun valley’s displacement and deformation Fig.7 The misses stress of the structure Performance analysis: (1) With the continuous increase of seismic wave peak, the seismic response is gradually increased
Online since: July 2011
Authors: Jie Han, Wang Shen Hao, Xin Min Dong, Ling Jun Li
There is a constant need for the reduction of operational and maintenance costs of Wind Energy Conversion System (WECS).
Each time only data was update, which reduced the network data flow and load.
network Center server Browser n …… Control room Browser 1 Sensor,data collector,embed web server Sensor,data collector,embed web server Figure 1.
Calling mode to gain real-time data function is setInterval("GetDatas ()", 2000), so that the system automatically refreshes and obtains data every 2 seconds.
To identify the yaw state more data should be accumulated.
Each time only data was update, which reduced the network data flow and load.
network Center server Browser n …… Control room Browser 1 Sensor,data collector,embed web server Sensor,data collector,embed web server Figure 1.
Calling mode to gain real-time data function is setInterval("GetDatas ()", 2000), so that the system automatically refreshes and obtains data every 2 seconds.
To identify the yaw state more data should be accumulated.
Online since: February 2011
Authors: Shao Peng Wu, Tian Gui Liu, Jun Han
According to creep test data fitted in excel at 0oC with the rheological model to compared with actual measurement data as seen in Figure 3.
Table 2 Parameters for revised Burgers model at 0oC Category E1/104 MPa E2/ MPa /105 MPa.s A/ Pa.s B/10-2 Error/% Base asphalt mixture 1.949 196 2.593 2.789 1.304 1.727 MMT modified asphalt mixture 1.949 298 4.416 3.548 1.314 1.980 Summary The total deformation of MMT modified asphalt mixtures are decreased during loading period, and the elastic and retardant elastic deformations are increased, which lead to the reduction of permanent deformation for mixtures.
Table 2 Parameters for revised Burgers model at 0oC Category E1/104 MPa E2/ MPa /105 MPa.s A/ Pa.s B/10-2 Error/% Base asphalt mixture 1.949 196 2.593 2.789 1.304 1.727 MMT modified asphalt mixture 1.949 298 4.416 3.548 1.314 1.980 Summary The total deformation of MMT modified asphalt mixtures are decreased during loading period, and the elastic and retardant elastic deformations are increased, which lead to the reduction of permanent deformation for mixtures.
Online since: October 2011
Authors: Mei Ge Wang, Wen Bo Wang
From the data, we can know the MR of the image denoised by EMD-ICPR is the optimal, better keeping the radiation characteristics of the image.
Compared with EMD-CPR and EMD-CIIT, its MR respectively reduces 0.136 and 0.076. 2 1 3 (a) Original Signal (b) EMD-CPR (c) EMD-CIIT (d) EMD-ICPR Figure1 Despeckling results of SAR image Table 1 The mean ratio (MR) and the edge sustained index (ESI) 4 Summary This paper proposes an improved image speckle reduction algorithm on the basis of EMD and PCA to solve the shortcomings of the traditional partial reconstruction algorithms.
Empirical mode decompositions as data-driven wavlet-like expansions[J].
Compared with EMD-CPR and EMD-CIIT, its MR respectively reduces 0.136 and 0.076. 2 1 3 (a) Original Signal (b) EMD-CPR (c) EMD-CIIT (d) EMD-ICPR Figure1 Despeckling results of SAR image Table 1 The mean ratio (MR) and the edge sustained index (ESI) 4 Summary This paper proposes an improved image speckle reduction algorithm on the basis of EMD and PCA to solve the shortcomings of the traditional partial reconstruction algorithms.
Empirical mode decompositions as data-driven wavlet-like expansions[J].
Online since: September 2013
Authors: Shi Jie Zhang, Yi Wen Tang, Li Hua Cheng
Introduction
Poly(lactic acid) (PLA) has received attention for large scale industrial applications, with the building of big synthesis plants has allowed effective price reduction.
The historical data on soil temperature and moisture are shown in Fig. 1.
Fig.1 Historical data of soil burial analysis Results and Discussion Fig.2 Weight loss of PLA/PBS blend after soil burial Fig.3 Number-average molecular weight of PLA/PBS blend after soil burial Soil burial test was performed to investigate the effect of ambient environment on the samples.
The historical data on soil temperature and moisture are shown in Fig. 1.
Fig.1 Historical data of soil burial analysis Results and Discussion Fig.2 Weight loss of PLA/PBS blend after soil burial Fig.3 Number-average molecular weight of PLA/PBS blend after soil burial Soil burial test was performed to investigate the effect of ambient environment on the samples.
Online since: May 2013
Authors: Chen Jiang, Hao Lin Li, De Bao Guo
Estimation method
In plunge cylindrical grinding, the force model is most accurately obtained by performing an experiment for a given setup [1]:
, (1)
where a is the infeed distance per workpiece revolution, kc is the grinding force coefficient, is the rate of reduction of the workpiece radius and nw is the rotational speed of the workpiece.
(7) Eq.7 may be applied to grinding AE RMS data to periodically update the empirical values of τ and the AE coefficient Ks to maintain an accurate process monitoring.
While Ks was substituted into Eq. 7, the time constant τ may be calculated using the LMS of AE RMS data in real time.
(7) Eq.7 may be applied to grinding AE RMS data to periodically update the empirical values of τ and the AE coefficient Ks to maintain an accurate process monitoring.
While Ks was substituted into Eq. 7, the time constant τ may be calculated using the LMS of AE RMS data in real time.
Online since: January 2013
Authors: Fang Ting, Xing Liu Hu, Xia Bing, Yun Biao Zhao
RGB to HSI color space conversion, and then its shown in Figs .2 as follows:
Figs.1 HSI image of insulator Figs.2 HSI image of insulator
An Improved MeanShift Algorithm
HIS image, three-component data in the HIS space there is a linear relationship, the algorithm meanshift method of finding local minima of the stable distribution of the density of a set of data.
The above equation becomes: (5) Because of four parameters, in order to direct use of the Hough transform to detect which need to establish two 3-D cumulative array , For each and let a and b in turn changes were calculated corresponding to and ,then accumulate (6) (7) Each increases ,then corresponding reduction .
The above equation becomes: (5) Because of four parameters, in order to direct use of the Hough transform to detect which need to establish two 3-D cumulative array , For each and let a and b in turn changes were calculated corresponding to and ,then accumulate (6) (7) Each increases ,then corresponding reduction .
Online since: October 2013
Authors: Jie Li, Yu Chuan Feng
Introduction
With the increasing requirements of the huge information storage, higher density and higher data transfer rate become the trends of optical data storage.
The two isomers of diarylethenes differ from each other not only in their absorption spectra, but in many physical and chemical properties including geometry, refractive index, as well as oxidation/reduction potential, etc. [6, 1].
The two isomers of diarylethenes differ from each other not only in their absorption spectra, but in many physical and chemical properties including geometry, refractive index, as well as oxidation/reduction potential, etc. [6, 1].