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How to Evaluate the Quality of Modern Mechanical Products? Modelling and Analysis

Li X. P., Zhao M. Q., Liu Y. L., Wang W.

Przegląd Elektrotechniczny

2012

R. 88, nr 9b

184-187

The new connotations of product quality, generalized quality and factors that affect product quality of mechanical product are studied. And the function of product quality elements and the equation of product quality are established. Taking into account the different weight of the factors, the concept of the rate of contribution to quality is put forward, and then the function equation is established. Finally, based on the fuzzy comprehensive evaluation method, the fuzzy evaluation model and application of the product quality are studied.

Przedstawiono nowe sposoby określania jakości produkcji i współczynników decydujących o jakości produktów mechanicznych. Biorąc pod uwagę różą wagę współczynników zaproponowano model określający ich udział w jakości produktu finalnego. Zaproponowano też model w oparciu o logikę rozmytą.

Hydrothermal Synthesis, Structure Characterization of a New Mixed Mo/V Metal-Oxygen Cluster Compound: [Co(phen)3]2[HPMoV4 MoVI4V IV6 M2O44]×4H2O, (M = 0.78MoV + 0.22V IV)

Sun Y. H., Li X. P., Sun D. H., Niu L., Xu J. Q.

Polish Journal of Chemistry

2007

Vol. 81, nr 9

1567-1575

A new polyoxometalat[Co(phen)3]2[HPMoV4 MoVI4V IV6 M2O44]×4H2O, (M = 0.78MoV + 0.22V IV)e 1 was hy dro ther mally syn the sized and char ac ter ized by IR, el e men tal anal y ses, X-ray pho to elec tron spec trum, ESR and sin gle crys tal X-ray dif frac tion. The ti tle com - pound is in the triclinic space group P1 with a = 12.0953(7) A, b = 14.0182(6) A, c = 14.6468(7) A, V = 2402.55(18) A3, a = 105.134(2), b = 91.841(3), g = 91.401(2), Z = 1, and R1 (wR2) = 0.0617 (0.1701). The compound was prepared from tetra-capped pseudo-Keggin with phosphorus-centered polyoxoanions [PMo8V6M2O44]5-, [Co(phen)3]2+ cations and linked through hydrogen bonds and p-p stacking inte action into three-dimensional supramolecular framework. A study of the magnetic properties of 1 demonstrates that it exhib its antiferromagnetic coupling interactions.