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Online since: November 2013
Authors: Tie Neng Guo, Ting Yu Wu, Xiao Lei Song
Introduction
The most widely used approach to parameters identification is using FRFs data, which can be measured directly.
It can be seen from the FRFs with noise, noise signal in many FRFS has been completely destroyed the ideal data values, and this is accordance with the real experimental cases with noise frequency response data.
To select experimental data with this frequency selection method, and use this method to recognize bands have good noise resistance.
By this Subtraction term frequency selection method, you can select some of the band is not sensitive to noise, and get the data by identify these bands.
Celic: The influence of the coordinate reduction on the identification of the joint dynamic properties.
It can be seen from the FRFs with noise, noise signal in many FRFS has been completely destroyed the ideal data values, and this is accordance with the real experimental cases with noise frequency response data.
To select experimental data with this frequency selection method, and use this method to recognize bands have good noise resistance.
By this Subtraction term frequency selection method, you can select some of the band is not sensitive to noise, and get the data by identify these bands.
Celic: The influence of the coordinate reduction on the identification of the joint dynamic properties.
Online since: May 2016
Authors: Wang Tai Yong, Zhi Wu Shang, Zhu Chang, Zhen Wu Liu
It had important practical significance to research on vibration and noise reduction of similar products.
Data track is written by a certain angle based on the edges of the tape, which is accomplished by wound partial tape onto the rotary drum with tilt angle.
Head made data track with tilt angle on the tape because tape passed rotating drum.
And this may ensure data integrity of each data tape.
[5] SHANG Zhi-wu, WAN Shu-min, WANG Tai-yong, Research and application of structure test analysis system based high-speed data acquisition and real-time signal analysis, Instrumentation, 2001, 22(4) 300-301
Data track is written by a certain angle based on the edges of the tape, which is accomplished by wound partial tape onto the rotary drum with tilt angle.
Head made data track with tilt angle on the tape because tape passed rotating drum.
And this may ensure data integrity of each data tape.
[5] SHANG Zhi-wu, WAN Shu-min, WANG Tai-yong, Research and application of structure test analysis system based high-speed data acquisition and real-time signal analysis, Instrumentation, 2001, 22(4) 300-301
Online since: September 2013
Authors: Wu Zhu, Yong Li, Wei Zhao, Jian Kang Xiao
The new designs have evident circuit size reduction compared with relative reports.
Introduction Wideband technology has great potential in the development of various modern transmission systems, for instance, satellite and high data-rate wireless communication systems.
The first designed filter has a size reduction of about 90.2% compared with reference [7], and a size reduction of about 11.2% compared with reference [5].
While, the second proposed filter has a size reduction of about 38.3% compared with reference [1], and a size reduction of about 96.5% compared with reference [7].
Simultaneously, it has a size reduction of about 38.3% and about 96.5% compared with reference [1], and [7], respectively.
Introduction Wideband technology has great potential in the development of various modern transmission systems, for instance, satellite and high data-rate wireless communication systems.
The first designed filter has a size reduction of about 90.2% compared with reference [7], and a size reduction of about 11.2% compared with reference [5].
While, the second proposed filter has a size reduction of about 38.3% compared with reference [1], and a size reduction of about 96.5% compared with reference [7].
Simultaneously, it has a size reduction of about 38.3% and about 96.5% compared with reference [1], and [7], respectively.
Online since: March 2012
Authors: Mojtaba Sadighi, Javad Soltani Rad, Ali Tivay
The integrity of the data is validated for the FGM skins in comparison to a previously published reference.
Finally, an inspection is conducted on the data to show the influences of the location and depth of cracks and material properties on the flexural vibration characteristics of cracked FGM sandwich beams.
Cracks are likely to occur in FGM sandwiches, which can cause danger and performance reduction.
Mechanical and geometrical properties of the FGM top skin Mechanical and geometrical properties of the top skin Ett (top ceramic surface) Etb (bottom metallic surface) ρtt (top ceramic surface) ρtb (bottom metallic surface) νt (poisson’s ratio) 117 GPa 66.2 GPa 5600 kg/m3 4420 kg/m3 0.32 FE Modeling and Data Validation.
After obtaining data using the mentioned method, the results are validated in comparison to the data in reference [4] for FGM beams with and without edge-cracks, which is illustrated in Fig 2.
Finally, an inspection is conducted on the data to show the influences of the location and depth of cracks and material properties on the flexural vibration characteristics of cracked FGM sandwich beams.
Cracks are likely to occur in FGM sandwiches, which can cause danger and performance reduction.
Mechanical and geometrical properties of the FGM top skin Mechanical and geometrical properties of the top skin Ett (top ceramic surface) Etb (bottom metallic surface) ρtt (top ceramic surface) ρtb (bottom metallic surface) νt (poisson’s ratio) 117 GPa 66.2 GPa 5600 kg/m3 4420 kg/m3 0.32 FE Modeling and Data Validation.
After obtaining data using the mentioned method, the results are validated in comparison to the data in reference [4] for FGM beams with and without edge-cracks, which is illustrated in Fig 2.
Online since: January 2013
Authors: Ko Yu Shiao, Ming Liang Lin, Quo Cheng Sung
As the building sector accounts for about 30% of Taiwan’s carbon footprint, improving the Green Building Literacy (GBL) of building owners or users through general education is important to the carbon reduction commitment.
According to the suggestions by the Delphi panel and guidance of GBL model which was constructed from paper review and countrywide survey data by using structural equation modeling, the GBL curriculum not only conveys the knowledge of fact but more emphasizes on the knowledge for action and basic design skill through the involvement in the specific activities, which are also used to improve students’ attitudes and responsibility to promote their behavioral performance.
Green building is an efficient way to solve the environmental problem that we face today, so that improving building owners’ or users’ literacy about green building is important to the carbon reduction commitment.
Data were collected by means of GBL questionnaire (including Cognitive, Affective, & Behavioral subscale) [4], teacher observation & reflective diaries, students’ assignments, student journal & report writings, and open-ended question test.
Green your life, green your home: Live a Green-Building Lifestyle Activities: ●Changing water usage habits with Water Bank website: http://www.waterbank.com.tw ●Planning to reduce electricity consumption at the Taipower website: www.taipower.com.tw/indexE.htm Knowledge for design skill Decision-making Willingness Practices GC7 Be able to measure the basic data, including: temperature, humidity, lighting, noise, CO2 concentration, etc., in the surrounding environment.
According to the suggestions by the Delphi panel and guidance of GBL model which was constructed from paper review and countrywide survey data by using structural equation modeling, the GBL curriculum not only conveys the knowledge of fact but more emphasizes on the knowledge for action and basic design skill through the involvement in the specific activities, which are also used to improve students’ attitudes and responsibility to promote their behavioral performance.
Green building is an efficient way to solve the environmental problem that we face today, so that improving building owners’ or users’ literacy about green building is important to the carbon reduction commitment.
Data were collected by means of GBL questionnaire (including Cognitive, Affective, & Behavioral subscale) [4], teacher observation & reflective diaries, students’ assignments, student journal & report writings, and open-ended question test.
Green your life, green your home: Live a Green-Building Lifestyle Activities: ●Changing water usage habits with Water Bank website: http://www.waterbank.com.tw ●Planning to reduce electricity consumption at the Taipower website: www.taipower.com.tw/indexE.htm Knowledge for design skill Decision-making Willingness Practices GC7 Be able to measure the basic data, including: temperature, humidity, lighting, noise, CO2 concentration, etc., in the surrounding environment.
Online since: July 2014
Authors: Liang Liu
And the data simulation is good and help to solve practical problems
The most distinguishing feature of skew girder bridge is bend torsion coupling effect, cause across the bending moment is smaller than corresponding orthogonal box girder bending moment, which makes the same span of skew girder bridge longitudinal bending moment is smaller than that of positive girder bridge, while the torque larger than the positive bridge.
The skew angle is 45 °, the maximum stress reduction rate of 48%, 16% minimum stress is reduced, the rate of reduction of stress between 16% ~ 48%; skew angle of 30 °, the maximum stress reduction rate 39%, smallest stress reduced rate of 5%, the stress decrease rate is between 5% ~ 39%, Oblique angle is 15 °,the maximum stress decreases at a rate of 33%, the smallest stress reduced rate of 4%, the stress decrease rate is between 4% ~ 33%.
Skew is 60 °, the maximum stress reduction rate of 56%, 23% minimum stress is reduced, the effective stress reduction rate calculated base points between 23% to 56%.
The skew angle is 45 °, the maximum stress reduction rate of 21%, the minimum stress reduction was 15%, the stress reduction ratio between 15% ~ 21%; skew angle of 30 °, the maximum stress reduction rate 15%, 11% of the minimum stress is reduced, the stress reduction ratio between 11% to 15%; skew angle of 15 °, the maximum stress reduction rate of 12%, 9% minimum stress reduction stress reduction ratio between 9% to 12%.As shown in figure 6 for caculating point stress under different oblique angle of draw the curve of different oblique angle can be seen, from the curve can be more intuitive for cross section of stress influence law and their respective features.
The determination of stress coefficient of oblique By analyzing these data, it is obvious that the conditions under skew, the stress value corresponding points across the cross-section must be less than the orthogonal supported.
The skew angle is 45 °, the maximum stress reduction rate of 48%, 16% minimum stress is reduced, the rate of reduction of stress between 16% ~ 48%; skew angle of 30 °, the maximum stress reduction rate 39%, smallest stress reduced rate of 5%, the stress decrease rate is between 5% ~ 39%, Oblique angle is 15 °,the maximum stress decreases at a rate of 33%, the smallest stress reduced rate of 4%, the stress decrease rate is between 4% ~ 33%.
Skew is 60 °, the maximum stress reduction rate of 56%, 23% minimum stress is reduced, the effective stress reduction rate calculated base points between 23% to 56%.
The skew angle is 45 °, the maximum stress reduction rate of 21%, the minimum stress reduction was 15%, the stress reduction ratio between 15% ~ 21%; skew angle of 30 °, the maximum stress reduction rate 15%, 11% of the minimum stress is reduced, the stress reduction ratio between 11% to 15%; skew angle of 15 °, the maximum stress reduction rate of 12%, 9% minimum stress reduction stress reduction ratio between 9% to 12%.As shown in figure 6 for caculating point stress under different oblique angle of draw the curve of different oblique angle can be seen, from the curve can be more intuitive for cross section of stress influence law and their respective features.
The determination of stress coefficient of oblique By analyzing these data, it is obvious that the conditions under skew, the stress value corresponding points across the cross-section must be less than the orthogonal supported.
Online since: December 2013
Authors: Zhong Xu Dai, Xin Zhang, Dan Ni Tian, Si Lin Gong, Chang Ying Yang
Pd/C catalyst samples with Pd loads of 20, 30, 40 and 50 wt% were obtained by chemical reduction reaction of PdCl2 and NaBH4.
Figure 4 is the relationship of the ethanol oxidized capacities with the ratio of Pd and C, which the data is from the figure 3.
From the above data analysis, the catalytic activity to the Ethanol oxidation with 40% Pd in Pd/C sample is superior to the other samples
In the CV curve, no reduction peak can be found.
Conclusions Pd/C catalyst samples with Pd loads of 20, 30, 40 and 50 wt% were fabricated by chemical reduction reaction.
Figure 4 is the relationship of the ethanol oxidized capacities with the ratio of Pd and C, which the data is from the figure 3.
From the above data analysis, the catalytic activity to the Ethanol oxidation with 40% Pd in Pd/C sample is superior to the other samples
In the CV curve, no reduction peak can be found.
Conclusions Pd/C catalyst samples with Pd loads of 20, 30, 40 and 50 wt% were fabricated by chemical reduction reaction.
Online since: September 2015
Authors: Jeong Hun Cho, Doo San Cho, Dae Jin Park
In order to optimize data layout in the architecture, processor data reuse should be considered.
Decision factor for data cluster selection: if some data have T>1, then they might be a data cluster under satisfying a condition that the data should be consecutively located in address space.
Since the number of the elements is excessively large, we transfer the data elements onto the SM as a data cluster.
Data cluster is a union of data elements that have consecutive location and similar lifetime in a loop nest.
We examined the effect of using the SM on the reduction of traffic to main memory as well as on the energy spent in the memory subsystem.
Decision factor for data cluster selection: if some data have T>1, then they might be a data cluster under satisfying a condition that the data should be consecutively located in address space.
Since the number of the elements is excessively large, we transfer the data elements onto the SM as a data cluster.
Data cluster is a union of data elements that have consecutive location and similar lifetime in a loop nest.
We examined the effect of using the SM on the reduction of traffic to main memory as well as on the energy spent in the memory subsystem.
Online since: May 2014
Authors: Ji Ping Cao, Wen Xia Sun, Yang Tao Fan, Zhi Hui Zhao, Ya Hong Zhu
In the spare parts demand forecasting of equipment maintenance based on virtual warehousing, a large number of historical consumption data are needed.
But among these data, there are probably redundant , inaccurate or incomplete information, which can be dealt with well by rough set theory to take attribute reduction and to extract useful information.
The first step is to take a discretization on continuous data.
The number of the clustering in this algorithmis no need to specify in advance, but to realize the automatic clustering based on the compatibility constraints and clustering distance threshold of the consistent degree of decision table after clustering. 3.2.2 Attribute reduction algorithm After the discretization of data processing, attribute reduction follows.
For security reasons, data of influencing factors cannot be listed here one by one, which are handled dimensionlessly.
But among these data, there are probably redundant , inaccurate or incomplete information, which can be dealt with well by rough set theory to take attribute reduction and to extract useful information.
The first step is to take a discretization on continuous data.
The number of the clustering in this algorithmis no need to specify in advance, but to realize the automatic clustering based on the compatibility constraints and clustering distance threshold of the consistent degree of decision table after clustering. 3.2.2 Attribute reduction algorithm After the discretization of data processing, attribute reduction follows.
For security reasons, data of influencing factors cannot be listed here one by one, which are handled dimensionlessly.
Online since: July 2014
Authors: Xian Kai Bao, Li Juan Liang
Through research, it got the rectangular pipe jacking construction sphere of influence of soil disturbance, and the variation in both horizontal and vertical direction, and compared with the measured data, proved that the numerical simulation has important guiding significance to the pipe jacking construction, will provide a reference for the future construction of similar projects.
Finite-element modeling The influence width value of channel sides is 3 times of the actual channel width, the depth value under the baseboard is 9times of the actual channel height according to the associated engineering data and modeling situation.
Finite-element values anlysis We set 3 monitoring points to collect data along pipe axis vertically on 18m,33m,48m points numbered as ZZ1+0,ZZ2+0,ZZ3+0.And we set 10 auxiliary points horizantally along with the 3 monitoring points and the distances are 4m, 8m, 12m, 16m, 20m.Vertical and horizantal channel displacements distribution curves with reangcle pipe jacking are as figure 2 and 3 Fig 2Vertical settlement curve on point ZZ1+0 with soil excavation Fig 3Vertical settlement curve on point ZZ2+0 with soil excavation Fig 4 Vertical settlement curve on point ZZ3+0with soil excavation Fig 5 Vertical settlement curve on cross section ZZ2+0 with soil excavation The Settling volume reduction can be above 90% when the excavation is in the 3D (D for channel length) range of the monitoring point, and it can be ignored when the excavation is out of the range in Fig 2 and 4.
Meanwhile, the settling volume reduction speed in the monitoring point slow down with excavation section away from the monitoring point.
Conclusions according to the above analysis we can conclude that: 1)The Settling volume reduction can be above 90% when the pipe jacking equipment is in the 3D (D for channel length) range of the monitoring point, and it can be ignored when the excavation is out of the range.
Finite-element modeling The influence width value of channel sides is 3 times of the actual channel width, the depth value under the baseboard is 9times of the actual channel height according to the associated engineering data and modeling situation.
Finite-element values anlysis We set 3 monitoring points to collect data along pipe axis vertically on 18m,33m,48m points numbered as ZZ1+0,ZZ2+0,ZZ3+0.And we set 10 auxiliary points horizantally along with the 3 monitoring points and the distances are 4m, 8m, 12m, 16m, 20m.Vertical and horizantal channel displacements distribution curves with reangcle pipe jacking are as figure 2 and 3 Fig 2Vertical settlement curve on point ZZ1+0 with soil excavation Fig 3Vertical settlement curve on point ZZ2+0 with soil excavation Fig 4 Vertical settlement curve on point ZZ3+0with soil excavation Fig 5 Vertical settlement curve on cross section ZZ2+0 with soil excavation The Settling volume reduction can be above 90% when the excavation is in the 3D (D for channel length) range of the monitoring point, and it can be ignored when the excavation is out of the range in Fig 2 and 4.
Meanwhile, the settling volume reduction speed in the monitoring point slow down with excavation section away from the monitoring point.
Conclusions according to the above analysis we can conclude that: 1)The Settling volume reduction can be above 90% when the pipe jacking equipment is in the 3D (D for channel length) range of the monitoring point, and it can be ignored when the excavation is out of the range.