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Online since: February 2011
Authors: Yong Zang, Bo Zhang, Li Hong Cui, Zhi Ying Gao
The simulation results matched well with the data obtained on the spot.
The mean reduction of temperature in the arc region of flange is 9.9°C, and that of central web, 14.3°C.
The material constants and initial coefficients of radiation and convection used in simulation model were set according to the data of references [9-10].
Based on above initial data a series of trials could be done.
(a) in the web (b) in the flange Fig. 7 Comparison between the axial stresses of measurement and simulation Conclusions (1) According to the measured data, the temperature distribution of H700×300 was simulated.
The mean reduction of temperature in the arc region of flange is 9.9°C, and that of central web, 14.3°C.
The material constants and initial coefficients of radiation and convection used in simulation model were set according to the data of references [9-10].
Based on above initial data a series of trials could be done.
(a) in the web (b) in the flange Fig. 7 Comparison between the axial stresses of measurement and simulation Conclusions (1) According to the measured data, the temperature distribution of H700×300 was simulated.
Online since: June 2013
Authors: Jia Jia Ni, Li Tao, Yi Jun Wang, Jin Lei Wu
According to the analysis of data on the survey, we put forward some particular energy-saving measures of central air-conditioning system of the hotel, including strengthening the building envelope insulation, energy saving technology of doors and windows, measures of roof energy saving, setting reasonable indoor temperature, adopting frequency control air-conditioning, reuse waste heat of the central air-conditioning, using the condensation water of central air conditioning to make-up water and reducing temperature of cooling tower , and drying the fresh air independently.
According to the data, in a modern building, central air-conditioning energy consumption accounts for about 50% of the total energy consumption of the entire building.
According to the data [1], the heat transfer coefficient of the building envelope increases 1W/(m2×K), if the other conditions under the same conditions, the air conditioning system design load will increase nearly 30%.
According to the data [6], in order to achieve the same cooling capacity, cooling water inlet water temperature for each should add 1°C, and energy consumption should increase by 4%.
So it achieves the purpose of energy saving and emission reduction.
According to the data, in a modern building, central air-conditioning energy consumption accounts for about 50% of the total energy consumption of the entire building.
According to the data [1], the heat transfer coefficient of the building envelope increases 1W/(m2×K), if the other conditions under the same conditions, the air conditioning system design load will increase nearly 30%.
According to the data [6], in order to achieve the same cooling capacity, cooling water inlet water temperature for each should add 1°C, and energy consumption should increase by 4%.
So it achieves the purpose of energy saving and emission reduction.
Online since: September 2014
Authors: Chia Hung Lin, Chao Shun Chen, Wei Lin Hsieh, Shih Chieh Hsieh
The PV power generation is estimated based on local solar irradiation and temperature data.
The reduction of CO2 emission by PV systems was considered a social benefit and was used to determine the profitability of PV systems [5].
To estimate the annual generation of power by the PV system, the local hourly weather data over one-year period is first sorted in descending order of the irradiation level of sunlight.
By retrieving the local weather data of hourly irradiation of the test feeder on July 5 2010, the annual duration curve of solar irradiation and the corresponding PV power duration curves for PV systems with capacities of 2,500 kWp and 4,000 kWp are derived as shown in Fig. 1.
With the simulation data of a Taipower distribution feeder, we can achieve the maximal NPV of $9.3 million by setting up a 4,500-kWp PV system with a 500-kVAR DSTATCOM.
The reduction of CO2 emission by PV systems was considered a social benefit and was used to determine the profitability of PV systems [5].
To estimate the annual generation of power by the PV system, the local hourly weather data over one-year period is first sorted in descending order of the irradiation level of sunlight.
By retrieving the local weather data of hourly irradiation of the test feeder on July 5 2010, the annual duration curve of solar irradiation and the corresponding PV power duration curves for PV systems with capacities of 2,500 kWp and 4,000 kWp are derived as shown in Fig. 1.
With the simulation data of a Taipower distribution feeder, we can achieve the maximal NPV of $9.3 million by setting up a 4,500-kWp PV system with a 500-kVAR DSTATCOM.
Online since: November 2013
Authors: Lin Chen, Qian Feng
The simulated results and experimental data were in good correspondence, which verify the simulation methods are reasonable and the simulation results are acceptable.
The optimal operation, configuration improvement and energy reduction of oxidation ditch would play a crucial role to improve the wastewater treatment, through the study of mixed liquor hydraulic characteristics in the oxidation ditch.
And the simulation results were compared with velocity data measured on the ditch, which could provide some evidences to the future study.
The simulated results were compared with the measured data in figure 6.
The results were verified by the experimental data.
The optimal operation, configuration improvement and energy reduction of oxidation ditch would play a crucial role to improve the wastewater treatment, through the study of mixed liquor hydraulic characteristics in the oxidation ditch.
And the simulation results were compared with velocity data measured on the ditch, which could provide some evidences to the future study.
The simulated results were compared with the measured data in figure 6.
The results were verified by the experimental data.
Online since: September 2013
Authors: Xiao Hui Duan, Ru Guang Song
During which, the radar waves is vulnerable to the interference from buildings and the data processing is complex.
It can not only reduce the work of the supervisory staff, but also make use of the data collected by the system.
The system uses a industrial computer to do data acquisition and processing.
Watercrafts’ feature identification and adaptive error controlling The thought of future Identification is respectively converting the data of two lasers to a Cartesian coordinate, and then to find the same boat by coordinate and use the data fusion technique to fuse these two coordinates data [5], as shown in Figure 3.
So the correction and smoothing of the measured data is very important.
It can not only reduce the work of the supervisory staff, but also make use of the data collected by the system.
The system uses a industrial computer to do data acquisition and processing.
Watercrafts’ feature identification and adaptive error controlling The thought of future Identification is respectively converting the data of two lasers to a Cartesian coordinate, and then to find the same boat by coordinate and use the data fusion technique to fuse these two coordinates data [5], as shown in Figure 3.
So the correction and smoothing of the measured data is very important.
Online since: October 2011
Authors: Shu Yue Chen, Yong Ming Liu, Yi Wang
When a data packet arrives via the network, LwIP encapsulates the data from the packet into one or more data structures called pbufs, which are linked together in a chain.
Web server receive data from Tcp_receive() function and sent data by callback Tcp_write() function.
Instrument interprets the data by LwIP and sent it to Web server,and Web server parse the data further.
LwIP stack listens the Internet, if the data happen.
End Y N N communication Transmit command Start measuring Set condition Storage data Read data Display data Begin Network listen Data arriving?
Web server receive data from Tcp_receive() function and sent data by callback Tcp_write() function.
Instrument interprets the data by LwIP and sent it to Web server,and Web server parse the data further.
LwIP stack listens the Internet, if the data happen.
End Y N N communication Transmit command Start measuring Set condition Storage data Read data Display data Begin Network listen Data arriving?
Online since: January 2015
Authors: Xin Ling Wu, Min Zhao, Peng Jin, Ya Chen Zhang
It can provide the real-time load and temperature online monitoring data.
The short circuit grounding data will be uninterrupted analysis.
Communication terminal: receiving monitoring terminal data corresponding to a monitoring terminal.
It realizes the data transmission to the station software
If the abnormal communication in the reporting process, it can be switched to the other phase terminals for data transmission to ensure the accuracy and reliability of data report.
The short circuit grounding data will be uninterrupted analysis.
Communication terminal: receiving monitoring terminal data corresponding to a monitoring terminal.
It realizes the data transmission to the station software
If the abnormal communication in the reporting process, it can be switched to the other phase terminals for data transmission to ensure the accuracy and reliability of data report.
Online since: February 2013
Authors: Pavel Koštial, Jan Valíček, Jana Müllerová, Marta Harničárová, Radovan Grznárik, Milena Kušnerová
The surface tensions and temperature dependencies of several metallic materials have been determined and confirmed by data obtained from the literature.
It was found to be in very good agreement between our results and data from different sources in the literature.
(4) On the basis of above given formulas, by using deformation parameters, it was derived a relation for calculation of a stress - balancing component (5), on the basis of which was derived the fundamental equation for surface tension calculation (6) , (5) , (6) Our solution was confirmed by experimental data obtained by Shebzukhova et al. [4], who produced an analytical expression for the Tolman parameter δT, self - absorption on a tension surface Γ, and surface tension σ on flat and curved surfaces using the thermodynamic Gibbs method and they have found out that the surface tension decreases with a decrease in the radius of an equimolecular dividing
The surface tension of these metals decreases with a reduction in the radius of curvature.
It was found to be in very good agreement between our results and data from different sources in the literature.
(4) On the basis of above given formulas, by using deformation parameters, it was derived a relation for calculation of a stress - balancing component (5), on the basis of which was derived the fundamental equation for surface tension calculation (6) , (5) , (6) Our solution was confirmed by experimental data obtained by Shebzukhova et al. [4], who produced an analytical expression for the Tolman parameter δT, self - absorption on a tension surface Γ, and surface tension σ on flat and curved surfaces using the thermodynamic Gibbs method and they have found out that the surface tension decreases with a decrease in the radius of an equimolecular dividing
The surface tension of these metals decreases with a reduction in the radius of curvature.
Online since: December 2014
Authors: Yan Li, Na Li
Index selection and models introduction
2.1 index selection
2.1.1The potential factors of Corporation characteristics named A , to analyze from the perspective of financial management, is divided into five comprehensive to reflect the characteristics of company size A1, corporate governance A2, profitability A3, leverageA4, development ability A5, also is the emphasis aspect of domestic scholars researchers
2.1.2 The potential factors of external pressure named B, this paper selects the marketing index MAR of Fang Gang’s and subdivision project, select the B1 data as the relationship between government and market, the proportion of B2, distribution of economic resources B3, reducing the size of government B4, the intermediary market growth degree of B5, the development of intermediary organizations and regulations B6 as detailed variables.
2.1.3 Environmental information disclosure quality named C,using the RKS enterprise social responsibility report rating system, divided into three
C3 description for each index assignment, from 0-4, 0 is the lowest, 4 is the best, 0.5 points for a score of each section.the section Description, Score0 points means no information description, no reflected at all. 0.5 point smeans sporadic fuzzy information or only mentioned 1 points. literally mentioned, no expansion of disclosure. 1.5 points means language statement information disclosure. 2 points means system and a small amount of data information disclosure. 2.5 points means institutional and partial data information disclosure. 3 points means the system class and a large amount of data information disclosure. 3.5 points means the basic integrity of the data information disclosure. 4 points means complete and clear data information disclosure.
These latent variables (factors)can provide a reference for Structural Equation Modeling, the selected impact factors will all be used for exploratory analysis. 3.1 the data We choose Shanghai and Shenzhen listing Corporation in 2010as the research object, selects 472 listing Corporation as a sample, sample excluding the incomplete data and the renamed company.
Use LISREL8.0 for analyzing . 3.2 Empirical results Analysis Overall, the index number2.083 shows good results, the first index is the ratio of party card statistics and degree of freedom, America social statistician Kamini J and Mark Evil think, the chi square value and degree of freedom lies between 2:1 to 3:1 can be accepted, shows significant on the whole and the path parameters on this structural equation fitting appear fitting better effect is less than the critical standard 3; P=0.0, P value is less than the required 0.1 value; specification fit index, comparative fit index, CFI is more than 0.9 inspection requirements, and approximate RMS residual (RMSEA) and other indicators of =0.067 is less than 0.08, showed that the fitting the degree of model and data very well.
At the same time, seeing from the data, the external pressure is obviously related effects on company itself characteristic, path coefficient between them to achieve a 0.44,p=0.00 isless than 0.001, the hypothesis of this study support. in addition, the company internal overall characteristics and environmental quality information also obviously correlation, path coefficient between them to achieve 0.53,p=0.00 is less than 0.001.At the same time, it indicates that external pressure not only direct effect on the environmental information disclosure ,also is affect the internal characteristics related to the environmental information.
C3 description for each index assignment, from 0-4, 0 is the lowest, 4 is the best, 0.5 points for a score of each section.the section Description, Score0 points means no information description, no reflected at all. 0.5 point smeans sporadic fuzzy information or only mentioned 1 points. literally mentioned, no expansion of disclosure. 1.5 points means language statement information disclosure. 2 points means system and a small amount of data information disclosure. 2.5 points means institutional and partial data information disclosure. 3 points means the system class and a large amount of data information disclosure. 3.5 points means the basic integrity of the data information disclosure. 4 points means complete and clear data information disclosure.
These latent variables (factors)can provide a reference for Structural Equation Modeling, the selected impact factors will all be used for exploratory analysis. 3.1 the data We choose Shanghai and Shenzhen listing Corporation in 2010as the research object, selects 472 listing Corporation as a sample, sample excluding the incomplete data and the renamed company.
Use LISREL8.0 for analyzing . 3.2 Empirical results Analysis Overall, the index number2.083 shows good results, the first index is the ratio of party card statistics and degree of freedom, America social statistician Kamini J and Mark Evil think, the chi square value and degree of freedom lies between 2:1 to 3:1 can be accepted, shows significant on the whole and the path parameters on this structural equation fitting appear fitting better effect is less than the critical standard 3; P=0.0, P value is less than the required 0.1 value; specification fit index, comparative fit index, CFI is more than 0.9 inspection requirements, and approximate RMS residual (RMSEA) and other indicators of =0.067 is less than 0.08, showed that the fitting the degree of model and data very well.
At the same time, seeing from the data, the external pressure is obviously related effects on company itself characteristic, path coefficient between them to achieve a 0.44,p=0.00 isless than 0.001, the hypothesis of this study support. in addition, the company internal overall characteristics and environmental quality information also obviously correlation, path coefficient between them to achieve 0.53,p=0.00 is less than 0.001.At the same time, it indicates that external pressure not only direct effect on the environmental information disclosure ,also is affect the internal characteristics related to the environmental information.
Online since: September 2016
Authors: Magda Ruiz, Jhonatan Camacho-Navarro, Rodolfo Villamizar, Luis Mujica, Oscar Pérez
Experimental data from a carbon-steel pipe loop was used to validate the effectiveness of the methodology, and its robustness considering environmental and operational variations.
Data acquisition, ii.)
The statistical feature extraction stage comprises two procedures: data reduction through principal component analysis (PCA) and statistical indexes computation.
By means of PCA a minimal representation of cross-correlated signals is obtained to represent the data variance in a reduced space with minimal redundancy.
The analyzed data corresponds to experimental records collected without varying environmental conditions.
Data acquisition, ii.)
The statistical feature extraction stage comprises two procedures: data reduction through principal component analysis (PCA) and statistical indexes computation.
By means of PCA a minimal representation of cross-correlated signals is obtained to represent the data variance in a reduced space with minimal redundancy.
The analyzed data corresponds to experimental records collected without varying environmental conditions.