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Online since: May 2006
Authors: H. Shoji, Takashi Nakamura, Ian C. Clarke, T. Asano, Giuseppe Pezzotti, M. Ogino, R. Tsukamoto
Each data point represented the average of 625 Raman
measurements on the implant surface.
Results Initial technical challenges were encountered with the weight-loss measurements from 0 to 1 Mc duration and so the ZrO2/XLPE wear data were presented from 1 to 10 Mc duration.
Other studies to 3.0-Mrad XLPE showed up to 4-fold wear reduction by 5-Mc duration [3, 4, 5].
Thus the in-vitro studies continue to suggest an advantage in the use of such zirconia femoral condyles for wear reduction in UHMWPE tibial inserts.
Results Initial technical challenges were encountered with the weight-loss measurements from 0 to 1 Mc duration and so the ZrO2/XLPE wear data were presented from 1 to 10 Mc duration.
Other studies to 3.0-Mrad XLPE showed up to 4-fold wear reduction by 5-Mc duration [3, 4, 5].
Thus the in-vitro studies continue to suggest an advantage in the use of such zirconia femoral condyles for wear reduction in UHMWPE tibial inserts.
Wind-Induced Vibration Control and Analysis of Super High-Rise Structure Using Viscous Damping Walls
Online since: January 2014
Authors: Wen Fu He, Yan Guo, Wen Guang Liu, Jian Zhang
Table 3 Structural natural period
Vibration mode
1
2
3
4
5
6
Period (s)
6.57
6.29
3.5
1.98
1.76
1.28
Vibration form
Translation
Translation
Torsion
Translation
Translation
Torsion
Supposing structural maximum acceleration meets the characteristics of stationary random process, extract acceleration time-history data at various points in time, and select the fractile under a certain guaranteed ratio as the maximum acceleration().is peak acceleration, and the maximum value of acceleration time-history data is called maximum instantaneous acceleration.
(a) maximum instantaneous acceleration (b) inter-story displacement Fig. 7 Curve of structural Y-direction maximum instantaneous acceleration and inter-story displacement Table 4 Comparison of structural Y-direction maximum peak acceleration(units: m/s²) Floor number Damping structure Original structure Vibration reduction ratio Floor number Damping structure Original structure Vibration reduction ratio 73 0.241 0.315 23.4% 33 0.075 0.105 28.7% 63 0.179 0.237 24.4% 23 0.046 0.067 31.6% 53 0.143 0.192 25.2% 13 0.022 0.035 38.4% 43 0.109 0.148 26.3% 3 0.004 0.009 57.5% Summary The wind-induced vibration control and analysis of a super high-rise structure located in the area of strong typhoon with viscous damping walls is studied.
(a) maximum instantaneous acceleration (b) inter-story displacement Fig. 7 Curve of structural Y-direction maximum instantaneous acceleration and inter-story displacement Table 4 Comparison of structural Y-direction maximum peak acceleration(units: m/s²) Floor number Damping structure Original structure Vibration reduction ratio Floor number Damping structure Original structure Vibration reduction ratio 73 0.241 0.315 23.4% 33 0.075 0.105 28.7% 63 0.179 0.237 24.4% 23 0.046 0.067 31.6% 53 0.143 0.192 25.2% 13 0.022 0.035 38.4% 43 0.109 0.148 26.3% 3 0.004 0.009 57.5% Summary The wind-induced vibration control and analysis of a super high-rise structure located in the area of strong typhoon with viscous damping walls is studied.
Online since: November 2012
Authors: Santha Santha, Chen Zhang, Fauziah Shahul Hamid
Therefore, the required data from a FM landfill (Landfill A) and a local landfill site (Landfill B) is to analyze the efficiency of different waste disposal options in Malaysia.
The landfill managers can also benefit from the internal power generation and the reduction in the operational cost.
Indirect benefits are not presented in the data gathering.
It is know that proper closure of landfill sites can gain significant benefits including reduction of the risks to environment and public health, though it is impossible to be quantified.
The landfill managers can also benefit from the internal power generation and the reduction in the operational cost.
Indirect benefits are not presented in the data gathering.
It is know that proper closure of landfill sites can gain significant benefits including reduction of the risks to environment and public health, though it is impossible to be quantified.
Online since: October 2013
Authors: Feng Tao Sui, Kang Kang Sun, Wei Ding, Qing Liu
Effective energy ratio basically approached a stable value when the rod length more than 15m, with its reduction was only 0.064%/m.
Energy reduction ratio was only 5.4% when the rod length changed from 15m to 100m, whose impact on the value of N far less than other construction factors, such as stress states of borehole bottom and drilling technology.
Based on stress wave theory and the field measured data, hammering energy has no significant attenuation with the increase of rod length.
From the stress wave theory and field test data, it is not difficult to draw the following conclusions: (1) If L<10m, then αL is adopted on the basis of the values in Table 3. (2) If L≥10m, then αL is adopted the value 1.0 and does not need rod length modification.
Energy reduction ratio was only 5.4% when the rod length changed from 15m to 100m, whose impact on the value of N far less than other construction factors, such as stress states of borehole bottom and drilling technology.
Based on stress wave theory and the field measured data, hammering energy has no significant attenuation with the increase of rod length.
From the stress wave theory and field test data, it is not difficult to draw the following conclusions: (1) If L<10m, then αL is adopted on the basis of the values in Table 3. (2) If L≥10m, then αL is adopted the value 1.0 and does not need rod length modification.
Online since: March 2008
Authors: Maria Cristina Menziani, Gigliola Lusvardi, Ginaluca Malavasi, Ledi Menabue
Nevertheless, the different
experimental conditions previously used in several laboratories yielded inhomogeneous data, often
contradictory.
Data are collected every 50 time steps during the last 10000 of 35000 time steps.
Zn addition causes a global reduction of ion leaching, and for HZ20 the detected concentrations of silicon, phosphate and zinc are very close to the detection limit of the instrument.
The results confirmed the morphological data obtained at 3 hours with cell behaviour comparable to control onto HZ5 and HP5Z5, and cell sufferance onto the materials containing higher Zn concentrations.
The high complexation degree of Zn-Si glass network explains the slow rate of Zn releases into the contacting media and provides insights into the overall reaction rate reduction of the Zn containing glasses.
Data are collected every 50 time steps during the last 10000 of 35000 time steps.
Zn addition causes a global reduction of ion leaching, and for HZ20 the detected concentrations of silicon, phosphate and zinc are very close to the detection limit of the instrument.
The results confirmed the morphological data obtained at 3 hours with cell behaviour comparable to control onto HZ5 and HP5Z5, and cell sufferance onto the materials containing higher Zn concentrations.
The high complexation degree of Zn-Si glass network explains the slow rate of Zn releases into the contacting media and provides insights into the overall reaction rate reduction of the Zn containing glasses.
Online since: December 2014
Authors: Maja Kiba-Janiak
Due to the lack of data this analysis is limited to a certain extent.
The data related to the period from 2009 to 2012.
The second stage consists of statistical data collection.
Due to a lack of statistical data in relation to capital cities the total number of criteria has been limited (especially in the economic part). 11 criteria (C2, C3 and from C5 to C13) have been formulated as whole units, while 2 criteria include sub-criteria (C1 consists of: C1.1.
Despite the fact that the provided analysis is incomplete due to difficulties in collecting data, the results presented in the paper show some outranking relations between studied cities.
The data related to the period from 2009 to 2012.
The second stage consists of statistical data collection.
Due to a lack of statistical data in relation to capital cities the total number of criteria has been limited (especially in the economic part). 11 criteria (C2, C3 and from C5 to C13) have been formulated as whole units, while 2 criteria include sub-criteria (C1 consists of: C1.1.
Despite the fact that the provided analysis is incomplete due to difficulties in collecting data, the results presented in the paper show some outranking relations between studied cities.
Online since: May 2011
Authors: Guo Qing Yu, Gang Feng Gao, Xin Feng Lin
Abstract: This paper introduces the methodology and procedures of identification of overall coefficient of heat transfer (U-factor) of building envelopes using recursive least squares algorithm and dynamic heat transfer data.
Energy saving and emission reduction in building sector is one of the key issues for the whole world.
In the random circumstances using least squares method does not need the probability statistics information of observed data, but the estimated result has very good statistical properties.
It can be drawn the conclusion that the identified transfer function using recursive least squares algorithm can well characterize the intrinsic properties of the original data.
Summary This paper introduces the methodology and procedures of identification of overall coefficient of heat transfer (U-factor) of building envelopes using recursive least squares algorithm and dynamic heat transfer data.
Energy saving and emission reduction in building sector is one of the key issues for the whole world.
In the random circumstances using least squares method does not need the probability statistics information of observed data, but the estimated result has very good statistical properties.
It can be drawn the conclusion that the identified transfer function using recursive least squares algorithm can well characterize the intrinsic properties of the original data.
Summary This paper introduces the methodology and procedures of identification of overall coefficient of heat transfer (U-factor) of building envelopes using recursive least squares algorithm and dynamic heat transfer data.
Online since: August 2011
Authors: Shao Wei Pan, Liu Mei Zhang, Jia Hua Wang, Fang Chen
Software upgrading and maintenance can be realized through COM technology applying plug and play (pnp) method, by which cost reduction, improvement of productivity can be achieved.
Fig.1—General structure of MESAS system Data Loading Component connects data files of certain standards according to MESAS system.
Data Conversion Component processes data and has it meet the random modeling algorithms.
Grid Coarsening Component calculates gridded data object generated by the components mentioned above.
Data Statistic Analysis Component conducts histogram analysis of the space distribution of sedimentary facies and physical properties, and then explains their statistical properties.
Fig.1—General structure of MESAS system Data Loading Component connects data files of certain standards according to MESAS system.
Data Conversion Component processes data and has it meet the random modeling algorithms.
Grid Coarsening Component calculates gridded data object generated by the components mentioned above.
Data Statistic Analysis Component conducts histogram analysis of the space distribution of sedimentary facies and physical properties, and then explains their statistical properties.
Online since: July 2014
Authors: P. Parthiban, C. Arumugam, T.G. Arul
These data can be considered as fuzzy and the aim of this paper is to adopt TOPSIS decision making method to problems with fuzzy data.
The rating and weights of each data are expressed as triangular fuzzy numbers.
Background theory Fuzzy data In real-word, human judgements and preferences are often vague and cannot be estimated by exact numerical value.
To overcome the problem of incomplete or non-obtainable information we employ fuzzy/imprecise data.
Izadikhah (2006), Extension of the TOPSIS method for decision-making problems with fuzzy data, Applied Mathematics and Computation.
The rating and weights of each data are expressed as triangular fuzzy numbers.
Background theory Fuzzy data In real-word, human judgements and preferences are often vague and cannot be estimated by exact numerical value.
To overcome the problem of incomplete or non-obtainable information we employ fuzzy/imprecise data.
Izadikhah (2006), Extension of the TOPSIS method for decision-making problems with fuzzy data, Applied Mathematics and Computation.
Online since: October 2007
Authors: Kwang Geun Chin, S.I. Kim, Shi Hoon Choi, Jin Won Choi, B.J. Kim
Orientation-dependent stored energy developed in 80% cold-rolled
interstitial free (IF) sheet steel was evaluated by reconstructing of data measured using electron
back-scattered diffraction (EBSD) analysis.
The INCA software (Oxford instruments) was used for indexing EBSD patterns and enhancement of unsolved data.
After reconstructing the subgrain structure from EBSD data, the subgrain size and misorientation can be determined.
Subgrain identification angle: 3° Recrystallization Simulation The orientation data measured using EBSD analysis and stored energy data evaluated by Eq. 1 were used as input data for a MC simulation by mapping on square lattice.
A comprehensive comparison of the simulation results with experimental data will be treated in a future work.
The INCA software (Oxford instruments) was used for indexing EBSD patterns and enhancement of unsolved data.
After reconstructing the subgrain structure from EBSD data, the subgrain size and misorientation can be determined.
Subgrain identification angle: 3° Recrystallization Simulation The orientation data measured using EBSD analysis and stored energy data evaluated by Eq. 1 were used as input data for a MC simulation by mapping on square lattice.
A comprehensive comparison of the simulation results with experimental data will be treated in a future work.