Weights methods for

Comparison of weighting methods for liquid phase viscosities. Mixture of n-hexane - n-hexadecane at 298 K. 

Table 2. Weighting Method for Estimating Critical Properties of Organics...

Huppes G, van Oers L (2011) Evaluation of weighting methods for measuring the EU-27 overall environmental impact. JRC Scientific and Technical Reports, Luxembourg Publications Office of the European Union. ISBN 978-92-79-21643-5, ISSN 1831-9424... 

Stillwell WG, von Winterfeld D, John RS (1987) Comparing Hierarchical and Nonhierarchical Weighting Methods for Eliciting Multiattribute Value Models. Management Science 33 442-450 Stobaugh RB Jr (1969) Where in the world should we put that plant ... 

McCrackin, F. L., Weighting methods for Monte Carlo calculation of polymer... 

Figure 18.4 The drop-weight method for measuring surface tension. (Adapted from Experimental Physical Chemistry, 5th ed., by F. Daniels, J. H. Matthews, P. Bender, R. A. Alberty. Copyright (c) 1956 McGraw-Hill Book Co. Used with the permission of McGraw-Hill Book Co.)...

To determine the onset of surfactant aggregation, necessary for the calculations of the surfactant aggregation numbers, cac was determined for 0.1% PEO at various NaCl concentrations by surface tension measurements using the drop-weight method. For this puipose, an apparatus built at the department s workshop was us. ... 

Weighted methods for ranking alternatives, such as the rating method and Borda method, require that the criteria values (/jy) are properly scaled so that they are of similar magnitudes. Otherwise, the rankings will be incorrect. There are several methods available for scaling criteria values, such as ideal value method, linear normalization, and vector normalization using Lp norms. 

Wettschereck, D., D. W. Aha and T. Mohri, 1997. A review and empirical evaluation of feature weighting methods for aclass of lazy learning algorithms. Artificial Intelligence Review 11, 273 - 314. 

Eco-indicator 95 - Weighting Method for Environmental Effects that Damage Ecosystems or Human Health on a European Scale, Pre Consultants and DUIF Consultancy bV, Amersfoort, The Netherlands, 1995. 

In summary, distillation is not well suited for separating either low-molecular-weight materials or high-molecular-weight heat-sensitive materials. However, distillation might still be the best method for these cases, since the basic advantages of distillation... 

Distillation is by far the most commonly used method for the separation of homogeneous fluid mixtures. The cost of distillation varies with operating pressure, which, in turn, is mainly determined by the molecular weight of the materials being separated. Its widespread use can be attributed to its ability to... 

Distillation simulated by gas chromatography is a reproducible method for analyzing a petroleum cut it is appiicabie for mixtures whose end point is less than 500°C and the boiling range is greater than 50°C. The results of this test are presented in the form of a curve showing temperature as a function of the weight per cent distilled equivalent to an atmospheric TBP. 

For hydrocarbons, three weighting methods are known to give satisfactory results ... 

It is difficult to judge the accuracy of these methods because data are scarce. Table 4.9 compares the values obtained by different weighting methods with experimental values for a mixture of n-hexane-n-hexadecane at 25°C. The ASTM method shows results very close to those obtained experimentally. 

This is a fairly accurate and convenient method for measuring the surface tension of a liquid-vapor or liquid-liquid interface. The procedure, in its simpli-est form, is to form drops of the liquid at the end of a tube, allowing them to fall into a container until enough have been collected to accurately determine the weight per drop. Recently developed computer-controlled devices track individual drop volumes to = 0.1 p [32]. 

Harkins and Jordan [43] found, however, that Eq. 11-26 was generally in serious error and worked out an empirical correction factor in much the same way as was done for the drop weight method. Here, however, there is one additional variable so that the correction factor/ now depends on two dimensionless ratios. Thus... 

The following values for the surface tension of a 10 Af solution of sodium oleate at 25°C are reported by various authors (a) by the capillary rise method, y - 43 mN/m (b) by the drop weight method, 7 = 50 mN/m and (c) by the sessile drop method, 7 = 40 mN/m. Explain how these discrepancies might arise. Which value should be the most reliable and why ... 

As already discussed, variations of a field unknown within a finite element is approximated by the shape functions. Therefore finite element discretization provides a nat ural method for the construction of piecewise approximations for the unknown functions in problems formulated in a global domain. This is readily ascertained considering the mathematical model represented by Equation (2.40). After the discretization of Q into a mesh of finite elements weighted residual statement of Equ tion (2.40), within the space of a finite element T3<, is written as... 

The melting points of these esters are usually much lower than those of the corresponding 3 5 dinitrobenzoates their preparation, therefore, offers no advantages over the latter except for alcohols of high molecular weight and for polyhydroxy compounds. The reagent is, however, cheaper than 3 5 dinitrobenzoyl chloride it hydrolyses in the air so that it should either be stored under light petroleum or be prepared from the acid, when required, by the thionyl chloride or phosphorus pentachloride method. 

Another method for making a method size-extensive is called the self-consistent dressing of the determinant energies. This is a technique for modifying the Cl superdeterminant in order to make a size-extensive limited Cl. The accuracy of this technique is generally comparable to the Davidson correction. It performs better than the Davidson correction for calculations in which the HF wave function has a low weight in the Cl expansion. 

In their polymerization, many individual alkene molecules combine to give a high molecular weight product Among the methods for alkene polymerization cationic polymerization coordination polymerization and free radical polymerization are the most important An example of cationic polymerization is... 

Using X-ray diffraction, Karstang and Kvalhein reported a new method for determining the weight percent of kalonite in complex clay minerals To test the method, nine samples containing known amounts of kalonite were prepared and analyzed. The results (as %w/w kalonite) are shown. 

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