The Experts below are selected from a list of 82299 Experts worldwide ranked by ideXlab platform
De-qing Liang - One of the best experts on this subject based on the ideXlab platform.
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The semi-Ideal Solution theory for mixed ionic Solutions at solid-liquid-vapor equilibrium.
The journal of physical chemistry. A, 2006Co-Authors: Shuan-shi Fan, De-qing LiangAbstract:The semi-Ideal Solution theory has been presented to describe the changes in thermodynamic properties accompanying the process of mixing the nonIdeal electrolyte Solutions MiXi−(NY)sat−H2O (i = 1 and 2) at constant activities of NY and H2O, including concentration, chemical potential, activities of all MiXi, Gibbs free energy, enthalpy, entropy, thermal properties, and volumetric properties. The theory states that, under the conditions of equal activities of NY and H2O, the average hydration numbers characterizing the ion−solvent interactions have the same values in the mixture as in the subsystems and the process of mixing these nonIdeal electrolyte Solutions is as simple as that of mixing the Ideal Solutions if the contributions from the ion−ion interactions to the solvent activity are assumed to be the same in the mixture as in its subsystems, which has been justified by the calculations of the Pitzer equation. Therefore, a series of novel linear equations are established for the thermodynamic properti...
Shuan-shi Fan - One of the best experts on this subject based on the ideXlab platform.
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The semi-Ideal Solution theory for mixed ionic Solutions at solid-liquid-vapor equilibrium.
The journal of physical chemistry. A, 2006Co-Authors: Shuan-shi Fan, De-qing LiangAbstract:The semi-Ideal Solution theory has been presented to describe the changes in thermodynamic properties accompanying the process of mixing the nonIdeal electrolyte Solutions MiXi−(NY)sat−H2O (i = 1 and 2) at constant activities of NY and H2O, including concentration, chemical potential, activities of all MiXi, Gibbs free energy, enthalpy, entropy, thermal properties, and volumetric properties. The theory states that, under the conditions of equal activities of NY and H2O, the average hydration numbers characterizing the ion−solvent interactions have the same values in the mixture as in the subsystems and the process of mixing these nonIdeal electrolyte Solutions is as simple as that of mixing the Ideal Solutions if the contributions from the ion−ion interactions to the solvent activity are assumed to be the same in the mixture as in its subsystems, which has been justified by the calculations of the Pitzer equation. Therefore, a series of novel linear equations are established for the thermodynamic properti...
Zhang Wencha - One of the best experts on this subject based on the ideXlab platform.
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comprehensive evaluation of wind farms using variation coefficient method and technique for order preference by similarity to Ideal Solution
Power system technology, 2014Co-Authors: Zhang WenchaAbstract:It is hard to comprehensively and objectively evaluate the operation security of wind farms by single index, for this reason, based on variation coefficient method and technique for order preference by similarity to an Ideal Solution(TOPSIS) a comprehensive evaluation method for operation security of wind farms is proposed. Firstly, the variation coefficient method is used to calculate corresponding weights of all indices; secondly, the relative approach degree of each wind farm from corresponding sample point and the optimal sample point is calculated by TOPSIS, and then through the ranking of the calculated relative approach degree the comprehensive evaluation rank of wind farms is implemented. The high/low frequency ride through ability, low voltage ride through ability, voltage deviation at grid-connected point, dynamic response performance of SVC/SVG, active power control ability and power loss are chosen as evaluation indices for wind farms. Finally, taking the comprehensive operation security evaluation of wind farms located at a certain region as the case, the effectiveness and the feasibility of the proposed comprehensive evaluation method for wind farms are validated.
Chun Tzu Chen - One of the best experts on this subject based on the ideXlab platform.
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Dynamic multiple responses by Ideal Solution analysis
European Journal of Operational Research, 2004Co-Authors: Lee-ing Tong, Chung-ho Wang, Chih Chien Chen, Chun Tzu ChenAbstract:Abstract High technology industry must continuously improve product quality and multiple correlated product quality characteristics must be assessed simultaneously due to product complexity. While many Taguchi method applications have addressed a state system problem, dynamic multi-response problems have seldom been examined. This study presents a novel optimization procedure for dynamic multiple responses based on Taguchi’s parameter design. The signal to noise (SN) ratio and system sensitivity are used to assess the performance of each response. Principal component analysis is then performed on the SN values and system sensitivity values to obtain a set of uncorrelated components. The optimization direction for each component is also determined based on the corresponding variation mode chart. Finally, the relative closeness to the Ideal Solution resulting from the technique for order preference by similarity to Ideal Solution is determined as an overall performance index for multiple responses. A case study obtained from biological reduction of an ethyl acetoacetate process demonstrates the effectiveness of the proposed procedure.
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Decision Aiding Dynamic multiple responses by Ideal Solution analysis
2004Co-Authors: Lee-ing Tong, Chung-ho Wang, Chih Chien Chen, Chun Tzu ChenAbstract:High technology industry must continuously improve product quality and multiple correlated product quality characteristics must be assessed simultaneously due to product complexity. While many Taguchi method applications have addressed a state system problem, dynamic multi-response problems have seldom been examined. This study presents a novel optimization procedure for dynamic multiple responses based on Taguchis parameter design. The signal to noise (SN) ratio and system sensitivity are used to assess the performance of each response. Principal component analysis is then performed on the SN values and system sensitivity values to obtain a set of uncorrelated components. The optimization direction for each component is also determined based on the corresponding variation mode chart. Finally, the relative closeness to the Ideal Solution resulting from the technique for order preference by similarity to Ideal Solution is determined as an overall performance index for multiple responses. A case study obtained from biological reduction of an ethyl acetoacetate process demonstrates the effectiveness of the proposed procedure. 2003 Elsevier B.V. All rights reserved.
Yaduvir Singh - One of the best experts on this subject based on the ideXlab platform.
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optimal selection of wind power plant components using technique for order preference by similarity to Ideal Solution topsis
2016 International Conference on Electrical Power and Energy Systems (ICEPES), 2016Co-Authors: Neha Gupta, Yaduvir SinghAbstract:In optimal selection of a material among two or more alternatives on the basis of two or more attributes is a multiple attribute decision making (MADM) problem. In this paper we have demonstrated the use of Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) and modified TOPSIS in the selection of optimal material for wind turbine rotor blade design and optimal type of wind generator among the alternatives on the basis of multiple attributes and compared the outcomes of both. The method considers subjective preferences of the decision maker to decide weights of importance of the attributes.