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Online since: June 2014
Authors: Jun Gao, Shi Dong Liu, Wei Tao Pan
Selection of research area and data sources
This research chose Northern slope of Qinling Mountains as the research object, and selected related indexes including society, national economy, population, tourism, natural environment and environmental protection investment through analysis of tourism statistics, field survey data and social economy data in Huxian and Chang’an Districts of the Northern slope of Qinling Mountains where the tourism activities are very popular in those two districts, then establishing a piedmont area tourism ecological security evaluation model, to compare the different ecological security level in the year of 2000, 2007, and 2013.
Since 2000, the index R has been increasing in Huxian and Chang’an, which indicated that energy conservation and emission reduction were stressed as much as economic construction in piedmont area in Xi’an.
These data indicate that with the continuous development of the tourism activities, the pace of Chang’an tourism development was faster than Huxian, at the same time as the investment in environmental protection, control of population density, Chang’an with the continuous development of the tourism industry, the ecological environment gradually got stabilized.
Since 2000, the index R has been increasing in Huxian and Chang’an, which indicated that energy conservation and emission reduction were stressed as much as economic construction in piedmont area in Xi’an.
These data indicate that with the continuous development of the tourism activities, the pace of Chang’an tourism development was faster than Huxian, at the same time as the investment in environmental protection, control of population density, Chang’an with the continuous development of the tourism industry, the ecological environment gradually got stabilized.
Online since: October 2014
Authors: Lakkana Ruekkasaem
Study and gather data from case study factory
From the company study’s case, the result shows that inventory is the main issue that has been effected.
Inventory data has been collected dating back one year.
The procurement department is the sole management department of the company since they consider mainly about cost reduction as supposed to cost in inventory.
The example of ordering quantity in the first period is determined from Summary The study took into account of data dating back 1 year with inclusion of value and quantity of demand of each product depicted in Table 1.
After the data has been analysed and results have been compared, the following results were concluded to find solutions for inventory management.
Inventory data has been collected dating back one year.
The procurement department is the sole management department of the company since they consider mainly about cost reduction as supposed to cost in inventory.
The example of ordering quantity in the first period is determined from Summary The study took into account of data dating back 1 year with inclusion of value and quantity of demand of each product depicted in Table 1.
After the data has been analysed and results have been compared, the following results were concluded to find solutions for inventory management.
Online since: July 2011
Authors: Quang Cherng Hsu, Yan Chau Huang
It was concluded that the reduction of equivalent stress in anti-roll bar accomplished by modifying the bushing provided a significant improvement in the fatigue life.
Figure 10 depicts the input data, maximum principal stress is 89.8 MPa and number of cycles is 4147200, to generate a creative load spectrum.
Fig. 9 The data to generate an estimated S-N curve.
Fig. 10 The input data to generate a creative load spectrum.
These data can be used as load spectrum for further fatigue analysis.
Figure 10 depicts the input data, maximum principal stress is 89.8 MPa and number of cycles is 4147200, to generate a creative load spectrum.
Fig. 9 The data to generate an estimated S-N curve.
Fig. 10 The input data to generate a creative load spectrum.
These data can be used as load spectrum for further fatigue analysis.
Online since: September 2011
Authors: Wen Wang, Hong Shan Liu
Supposed sub step excavation displacement Δ is occurred under certain excavation parameters (width, depth, time, space), Δ can be obtained from monitor data, then at the same excavation layer, the same displacement would also be occurred at same excavation parameters.
3.
kt,λt Eq.2 is the relationship between displacement of diaphragm and unsupported exposure time ,the equation is obtained from statistics of monitor data
( Eq.2) y : displacement of diaphragm(mm); t: time (h) so, kt can be described as in Eq.3 : ( Eq.3) According to statistics data , the exposure curve of each layer is almost the same, so λt=1. 4.
Table 6 Comparative displacement of space effect distance (m) Layer 1 Layer 2 Layer 3 Layer 4 0 1 1 1 1 3 0.958 0.952 0.940 0.931 6 0.845 0.824 0.783 0.740 9 0.688 0.653 0.585 0.508 12 0.520 0.480 0.401 0.315 15 0.368 0.334 0.260 0.184 18 0.245 0.223 0.163 0.106 21 0.155 0.147 0.103 0.064 Prediction The displacement of 1st, May is 1.32mm(obtained from monitor data) 1.
Take the 9th, May prediction as example, following ways can be used to reduce excavation displacement: 1 reduce width of sub-step excavation Supposed to reduce the width to 6m, then kb=1/2.24=0.47, λb (2-1) =1.73, and the other parameters keep the same , then Δ=3.03mm, it is a 12% reduction of excavation displacement. 2 make the sub-step in two parts.
kt,λt Eq.2 is the relationship between displacement of diaphragm and unsupported exposure time ,the equation is obtained from statistics of monitor data
( Eq.2) y : displacement of diaphragm(mm); t: time (h) so, kt can be described as in Eq.3 : ( Eq.3) According to statistics data , the exposure curve of each layer is almost the same, so λt=1. 4.
Table 6 Comparative displacement of space effect distance (m) Layer 1 Layer 2 Layer 3 Layer 4 0 1 1 1 1 3 0.958 0.952 0.940 0.931 6 0.845 0.824 0.783 0.740 9 0.688 0.653 0.585 0.508 12 0.520 0.480 0.401 0.315 15 0.368 0.334 0.260 0.184 18 0.245 0.223 0.163 0.106 21 0.155 0.147 0.103 0.064 Prediction The displacement of 1st, May is 1.32mm(obtained from monitor data) 1.
Take the 9th, May prediction as example, following ways can be used to reduce excavation displacement: 1 reduce width of sub-step excavation Supposed to reduce the width to 6m, then kb=1/2.24=0.47, λb (2-1) =1.73, and the other parameters keep the same , then Δ=3.03mm, it is a 12% reduction of excavation displacement. 2 make the sub-step in two parts.
Online since: February 2013
Authors: Jing Fang Wang
Pitch detection process
Noisy speech underwent a 4-order elliptic band-pass filter, filter out high frequency and low frequency below 60Hz, and calculated to the first N0 elliptical filtering of data as the initial standard deviation of the noise section of Q0 (EMD as a basis for access ); then 20-30ms long framing; of each frame signal of a recursive two-degree threshold frame voicing decision, voiceless frame zero pitch, or determine the initial section of the standard deviation of the noise Q0 size.
Empirical mode decomposition(EMD) Assumption of signal, EMD IMF component selection to achieve the following steps: First find the signal maximum points and minimum of all data points, fitted by cubic spline interpolation to obtain the signal envelope and the next on the envelope, to ensure that all points on the two envelopes in the Between the upper and lower envelope by calculating the mean of each point, to obtain a mean curve, and define the signal minus the corresponding point of the sequence of the new data available: (2) If meet the conditions of IMF components,is I the first order IMF component.
Therefore, this combination of empirical mode decomposition of noisy speech signal pre-noise reduction, and then select the high-dimensional phase space reconstruction of attractor description of the characteristics of the signal to achieve the look and accurate pitch extraction of speech start and end point and purpose.
[6] Spib Noise data[EB/OL],http://spib.rice.edu/spib/select_noise.html [7] RABINERLR.On the use of autocorrelation analysis for pitch detection[J].IEEE Tram ASSR 1977,25(1):24-33
Empirical mode decomposition(EMD) Assumption of signal, EMD IMF component selection to achieve the following steps: First find the signal maximum points and minimum of all data points, fitted by cubic spline interpolation to obtain the signal envelope and the next on the envelope, to ensure that all points on the two envelopes in the Between the upper and lower envelope by calculating the mean of each point, to obtain a mean curve, and define the signal minus the corresponding point of the sequence of the new data available: (2) If meet the conditions of IMF components,is I the first order IMF component.
Therefore, this combination of empirical mode decomposition of noisy speech signal pre-noise reduction, and then select the high-dimensional phase space reconstruction of attractor description of the characteristics of the signal to achieve the look and accurate pitch extraction of speech start and end point and purpose.
[6] Spib Noise data[EB/OL],http://spib.rice.edu/spib/select_noise.html [7] RABINERLR.On the use of autocorrelation analysis for pitch detection[J].IEEE Tram ASSR 1977,25(1):24-33
Online since: October 2013
Authors: Katalin Líska, János Líska, János Kodácsy
Cutting force components were measured by KISTLER 9257B three-component, piezoelectric force measuring machine and data recording system.
We found, that in range of small feeds (at standard geometry), the relation of force components is similar to the data of literature, that is Ff 0.2 mm /rev this relation is not valid.
Experimental results During the experiments, we measured force components by dynamometer KISTLER 9257B and by data recording system.
In tables below we can see percental comparisons of data, when we compared the original surface roughness values to values after diamond burnishing (at using standard and wiper geometry).
The reduction slightly depends on feed and greatly depends on burnishing force.
We found, that in range of small feeds (at standard geometry), the relation of force components is similar to the data of literature, that is Ff
Experimental results During the experiments, we measured force components by dynamometer KISTLER 9257B and by data recording system.
In tables below we can see percental comparisons of data, when we compared the original surface roughness values to values after diamond burnishing (at using standard and wiper geometry).
The reduction slightly depends on feed and greatly depends on burnishing force.
Online since: June 2013
Authors: Ji Quan Hu, Yong Hu, Jing Tang, Li Juan Su, Ling Hua Hu
Meanwhile the chief motor automatically tracks the state of auxiliary motor and gives corresponding adaptive compensation following the reduction of energy storage unit, for controlling the movement of load.
The Table 2 lists specific data of chief and auxiliary motor working together by 5 times and total data of chief motor working separately by 5 times or 20 times.
Table 2 Data of comparison experiments No.
By repeating experiments of different loads, the data illustrates the efficiency of energy-saving can achieve over 30% on LQD50A 16t port tyre crane with new potential energy recycling management system in hoisting mechanism.
The Table 2 lists specific data of chief and auxiliary motor working together by 5 times and total data of chief motor working separately by 5 times or 20 times.
Table 2 Data of comparison experiments No.
By repeating experiments of different loads, the data illustrates the efficiency of energy-saving can achieve over 30% on LQD50A 16t port tyre crane with new potential energy recycling management system in hoisting mechanism.
Online since: March 2009
Authors: Pablo A. Muñoz-Rojas, M. Vaz, M.R. Lange, J. Stahlschmidt
In general, a staggered solution approach is adopted, in which separate analyses
are undertaken for each phenomenon with data exchange performed at pre-defined times or
increment intervals.
A universal testing machine EMIC DL30000 coupled to an automatic data acquisition system was also used.
Other material data and simulation parameters are presented in Table 1.
Material data.
As Ti increases, the combination between smaller yield stresses and reduction of necking leads to similar tensile loads for all cases analysed (see Fig. 3a for U ≈ 6 mm).
A universal testing machine EMIC DL30000 coupled to an automatic data acquisition system was also used.
Other material data and simulation parameters are presented in Table 1.
Material data.
As Ti increases, the combination between smaller yield stresses and reduction of necking leads to similar tensile loads for all cases analysed (see Fig. 3a for U ≈ 6 mm).
Online since: June 2011
Authors: Han Xing Liu, Wen Bo Zhang, Hong Tao Yu, Jing Song Liu
Although Patterson et al. studied the effect of ZrO2 additives on dielectric properties of CCTO and proposed that ZrO2 presenting at grain boundaries increased resistivity, leading to the reduction in dielectric loss [12], the retail dielectric response was not discussed.
By fitting the impedance spectroscopy data at room temperature, the low frequency resistivity is 5.4, 8.1 and 15.3 MΩ·cm respectively for Zr=0, 0.5 and 1.0mol%, while the high frequency value almost keeps a constant (~60Ω·cm).
A very significant feature of the RC barrier-layer model is that the relaxation time deduced from the ε’(T, ω) data, τε’, is longer than that deduced from the tanδ(T, ω) data, τδ.
Sinclair deduced grain boundary activation energy of 0.60ev for CCTO ceramic from the complex impedance data [6].
By fitting the impedance spectroscopy data at room temperature, the low frequency resistivity is 5.4, 8.1 and 15.3 MΩ·cm respectively for Zr=0, 0.5 and 1.0mol%, while the high frequency value almost keeps a constant (~60Ω·cm).
A very significant feature of the RC barrier-layer model is that the relaxation time deduced from the ε’(T, ω) data, τε’, is longer than that deduced from the tanδ(T, ω) data, τδ.
Sinclair deduced grain boundary activation energy of 0.60ev for CCTO ceramic from the complex impedance data [6].
Online since: July 2011
Authors: Rui Luo, Ping Chen, Ting Yang, Hui Zong Zhang, Ping Li, Ya Wu Zeng
(1) Process the data of sliced images
The imread[1] function was used to import the CT images to the computer circularly.
As the images contained so much information, the data must be reduced to improve the efficiency of the model.
The reducevolume[1] function was used to control the interval of points in the X, Y, and Z direction to reduce the amount of data. 579,279 points were taken from Figure 3 (a), (b).
Fig. 2 Sliced image from CT (a) (b) scanning technology Fig.3 Dense points (a) and loose point (b) (2)Generate the surface shell The data were obtained by establishing the isosurface of the shell.
In summary, taking α for 40 mm, and β for 0.4, the model satisfied the requests of the number of spheres and the smoothness of model and the reduction of overlap. 4 Conclusions This article combined the CT scanning technology with digital image processing technology, and obtained the dimensional coordinates of the gravel.
As the images contained so much information, the data must be reduced to improve the efficiency of the model.
The reducevolume[1] function was used to control the interval of points in the X, Y, and Z direction to reduce the amount of data. 579,279 points were taken from Figure 3 (a), (b).
Fig. 2 Sliced image from CT (a) (b) scanning technology Fig.3 Dense points (a) and loose point (b) (2)Generate the surface shell The data were obtained by establishing the isosurface of the shell.
In summary, taking α for 40 mm, and β for 0.4, the model satisfied the requests of the number of spheres and the smoothness of model and the reduction of overlap. 4 Conclusions This article combined the CT scanning technology with digital image processing technology, and obtained the dimensional coordinates of the gravel.