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Online since: October 2010
Authors: M. Reza, Soleymani Yazdi, M. Reza Razfar, M. Asadnia
Data acquisitions were made through piezoelectric dynamometer by
interface RS-232 to load three Kistler 5011B amplifiers to PC using the appropriate software
Dynoware Kistler®.
Design of Experiments. 27 data sets corresponding to samples based on full factorial design of the experiments employing three-level cutting parameters and three-level nanoclay content are given in Table 2.
Fig. 3: Thrust force vs nanoclay (phr) for different spindle speed and the same feed rate Thrust force modeling The training subset includes 32 groups or 90% of the experimental data and the testing subset includes 4 groups or 10% of the data which were selected randomly out of group in all parts.
MSE for training and checking data are respectively equal to 0.079 and 8.47 after 437 epochs.
Indeed, the PSONN makes it possible to realize training of machining data more precise than that of the BPNN.
Design of Experiments. 27 data sets corresponding to samples based on full factorial design of the experiments employing three-level cutting parameters and three-level nanoclay content are given in Table 2.
Fig. 3: Thrust force vs nanoclay (phr) for different spindle speed and the same feed rate Thrust force modeling The training subset includes 32 groups or 90% of the experimental data and the testing subset includes 4 groups or 10% of the data which were selected randomly out of group in all parts.
MSE for training and checking data are respectively equal to 0.079 and 8.47 after 437 epochs.
Indeed, the PSONN makes it possible to realize training of machining data more precise than that of the BPNN.
Online since: November 2013
Authors: Mei Li Sui, Jian Xin Wang
The data block length and the key length are both fixed to 128 bits, and the 128 bits data block is divided into 4 words each with 32-bit length.
These modules communicate each other via the PPR and PRM using the OPB Socket Bridge, the reconfiguration modules will be reconfigured via ICAP at that time, the user can perform the data exchange with the PC.
(B)The segmentation of algorithm In general, the system use the same sub keys to encrypt/decrypt the data continuously, and the sub keys generates by the main keys expansion only once.
Fig. 1 The system structure The embedded processor controls the custom reconfiguration IP core via the bus macro and custom interface module, and realizes the data and instructions exchange between the custom reconfiguration IP cores via the UART serial communication module.
The PC can read the data and send the instructions stored in CF card via UART devices.
These modules communicate each other via the PPR and PRM using the OPB Socket Bridge, the reconfiguration modules will be reconfigured via ICAP at that time, the user can perform the data exchange with the PC.
(B)The segmentation of algorithm In general, the system use the same sub keys to encrypt/decrypt the data continuously, and the sub keys generates by the main keys expansion only once.
Fig. 1 The system structure The embedded processor controls the custom reconfiguration IP core via the bus macro and custom interface module, and realizes the data and instructions exchange between the custom reconfiguration IP cores via the UART serial communication module.
The PC can read the data and send the instructions stored in CF card via UART devices.
Online since: July 2014
Authors: Cheng Chi Yu, Jia Shiun Chen, Yu Wei Lee
These components’ data were using the same data as Advisor Prius model.
Data maps of generator, traction motor, and engine CVT and Electromagnetic Clutches.
Fuel economy data of NEDC was presented in Table 5.
Summary In this study, TOYOTA Prius vehicle data was used to establish a planetary gear hybrid model and a new dual CVT hybrid model.
For acceleration performance, the mechanical speed reduction mechanism in new dual CVT hybrid system had better performance than the electronic speed reduction of planetary gear hybrid system.
Data maps of generator, traction motor, and engine CVT and Electromagnetic Clutches.
Fuel economy data of NEDC was presented in Table 5.
Summary In this study, TOYOTA Prius vehicle data was used to establish a planetary gear hybrid model and a new dual CVT hybrid model.
For acceleration performance, the mechanical speed reduction mechanism in new dual CVT hybrid system had better performance than the electronic speed reduction of planetary gear hybrid system.
Online since: March 2016
Authors: Jun Li, Cheng Wang, Bo Zhang
The research adopts the professional analysis software GaBi developed German PE International Company and localizes the data.
The main sources of data are Buwal, Ecoinvent, PE-GaBi and PlasticsEurope, as well as the data from global geographic, European chemical industry ecological impact and package materials.
The product or process chain model establishment, data analysis and balance calculation is based on life cycle inventory (LCI) database.
When conducting inventory analysis, the electric energy data are based on the above energy ratio.
That is the key part of energy saving and emission reduction approach.
The main sources of data are Buwal, Ecoinvent, PE-GaBi and PlasticsEurope, as well as the data from global geographic, European chemical industry ecological impact and package materials.
The product or process chain model establishment, data analysis and balance calculation is based on life cycle inventory (LCI) database.
When conducting inventory analysis, the electric energy data are based on the above energy ratio.
That is the key part of energy saving and emission reduction approach.
Online since: December 2013
Authors: Gao Jie
TRMM data cover all the places in middle and low latitudes.
R2 for monthly data is more than 0.88.
Fig. 1 TRMM mapping after data processing (June 1999) Taking TRMM data in June 1999 as an example (shown in Fig. 1).
After data processing, 72498 pairs of data are valid and left for regression.
Therefore, a significant consistency between observed data and TRMM data could justify the TRMM data.
R2 for monthly data is more than 0.88.
Fig. 1 TRMM mapping after data processing (June 1999) Taking TRMM data in June 1999 as an example (shown in Fig. 1).
After data processing, 72498 pairs of data are valid and left for regression.
Therefore, a significant consistency between observed data and TRMM data could justify the TRMM data.
Online since: January 2011
Authors: Shahrum Abdullah, Azman Jalar, Mohd Faridz Mod Yunoh, F. Harun
However, driven by the relentless pursuit of dimensional reduction in wire bonding technology which calls for reduction in wire diameter, these conventional methods may not be sufficient.
It was clearly observed that one more time , pull test above the ball ( hook location A) did not adequately test the 2nd bond quality and that location B is found to be more appropriate to test the bond quality Basing to the earlier rule of thumb which stated that the 2nd bond strength is sufficient to maintain a consistent manufacturing process as long as it can achieve either half or more of its breaking load [3], the earlier data which was considered failed or rejected per the current MIL Standard 883E can still be considered as pass as most of the bond strength values are still either half or more than its breaking load .
It was clearly observed that one more time , pull test above the ball ( hook location A) did not adequately test the 2nd bond quality and that location B is found to be more appropriate to test the bond quality Basing to the earlier rule of thumb which stated that the 2nd bond strength is sufficient to maintain a consistent manufacturing process as long as it can achieve either half or more of its breaking load [3], the earlier data which was considered failed or rejected per the current MIL Standard 883E can still be considered as pass as most of the bond strength values are still either half or more than its breaking load .
Online since: September 2014
Authors: Feng En Wang
Some research data show that the framework of the structure of the seismic damage occurs in the column and beam oer-sewn distally, node by the beam end and column end under axial force, bending moment and shear force, they work together and complex stress state.
Part of the test results and the empirical formula by some countries (such as: the United States, Canada, etc.) of the concrete specification. 1) the United States in the early 1950 s, the test floor column concrete strength is lower than the practice of concrete strength, and was started in 1963, in its concrete specification ACI318, f'ce=0.75 f'cc+0.35 f'cs≤f'cc (1) In the formula,f'ce—Beam-column node reduction strength of concrete; f'cs—Strength of concrete slab (beam); f'cc—The column of concrete strength。
2) Canada CSAA23.3-94 has a similar norms, the calculating formula for f'ce=0.25 f'cc+1.05 f'cs≤f'cc (2) In the formula,f'ce—Beam-column node reduction strength of concrete; f'cs—Strength of concrete slab (beam); f'cc—The column of concrete strength。
Part of the test results and the empirical formula by some countries (such as: the United States, Canada, etc.) of the concrete specification. 1) the United States in the early 1950 s, the test floor column concrete strength is lower than the practice of concrete strength, and was started in 1963, in its concrete specification ACI318, f'ce=0.75 f'cc+0.35 f'cs≤f'cc (1) In the formula,f'ce—Beam-column node reduction strength of concrete; f'cs—Strength of concrete slab (beam); f'cc—The column of concrete strength。
2) Canada CSAA23.3-94 has a similar norms, the calculating formula for f'ce=0.25 f'cc+1.05 f'cs≤f'cc (2) In the formula,f'ce—Beam-column node reduction strength of concrete; f'cs—Strength of concrete slab (beam); f'cc—The column of concrete strength。
Online since: July 2014
Authors: Zi Miao Tan, Yan An Xie
With the same azimuth resolution, it can achieve much wider swath than conventional SAR due to the reduction of PRF. sub-band synthesis algorithm can improve the range resolution while effective phase center sampling is overlapped.
Comparing with conventional SAR, it can reduce the PRF with the same azimuth resolution, the reduction of PRF can widen the width of the swath.
Digital signal processing of synthetic aperture radar data: algorithms and implementation [M].
Comparing with conventional SAR, it can reduce the PRF with the same azimuth resolution, the reduction of PRF can widen the width of the swath.
Digital signal processing of synthetic aperture radar data: algorithms and implementation [M].
Online since: July 2014
Authors: Stefan I. Gutiu, Catalin Moga
The bending resistance of the girder can be approximately evaluated with the following relations:
Upper subpanel Class 1 or Class 2:
(4.a)
Upper subpanel Class 3 or Class 4:
(4.b)
where: - is the bending girder resistance considering that the stiffener is perfectly rigid;
- K is a reduction coefficient determined in such a way that the stresses (Figure 2) should not be exceeded in the stiffener area:.
The reduction factor K Analysis example A comparative analysis regarding the pure bending resistance of a plate girder with a longitudinal stiffener located in the compression zone of the web is performed in this worked example.
Design data: Girder cross-section: web 2600x12 mm, flanges 650x30 mm; the girder stiffeners are at the distance of 2500 mm and have sufficient stiffness to create nodal lines for the buckled web; steel S355 for all girder elements.
The reduction factor K Analysis example A comparative analysis regarding the pure bending resistance of a plate girder with a longitudinal stiffener located in the compression zone of the web is performed in this worked example.
Design data: Girder cross-section: web 2600x12 mm, flanges 650x30 mm; the girder stiffeners are at the distance of 2500 mm and have sufficient stiffness to create nodal lines for the buckled web; steel S355 for all girder elements.
Online since: November 2013
Authors: Kai Jia, Ping Shi
We explore two techniques: principal component analysis (PCA) and forward feature selection (FFS) for dimensionality reduction.
PCA was explored initially since it provides an automated approach to dimensionality reduction, however, it is not easy to gauge significance of individual features in terms of predictive power using PCA, hence the need to explore FFS.
In FFS, we first choose that feature that correlates the best with subjective scores on the training set; then, that feature which correlates the best with subjective data in conjunction with the first feature is chosen.
PCA was explored initially since it provides an automated approach to dimensionality reduction, however, it is not easy to gauge significance of individual features in terms of predictive power using PCA, hence the need to explore FFS.
In FFS, we first choose that feature that correlates the best with subjective scores on the training set; then, that feature which correlates the best with subjective data in conjunction with the first feature is chosen.