Notice of RetractionSet Pair Analysis for Rural Drinking Water Quality
A large number of uncertain problems existing in rural drinking water safety system, it is of great significances to apply Set Pair Analysis (SPA) theory to analyze and study these uncertain problems in rural drinking water safety system. This study applies SPA theory to conduct an integrated evaluation of water quality to rural drinking water safety in Ya'an City, based on classification values of Sanitary Standard for Drinking Water (GB5749-85). This study has worked efficiently in practice. Compared with the same kind of methods which have been found, this paper has the outstanding results for the uncertain problems of health risk assessment of the rural drinking water safety.
SPA analytic method and its application on material selection
Based on the principle of SPA theory,the SPA comprehensive evaluation model for materials selection of parts established,it mainly takes into consideration on how to select reasonably an optimal kind among multi-adoptable materials while designing component parts.This mathematical model could let the qualitative evaluation of the material selection be quantified,fineness and clear-cut,thus raised the operability and scientific rationality of the evaluation work.
The Poet, The Critic, and the Moralist: Horace, Epistles 1.19
I begin by quoting from two valuable recent works on Horace. Professor Brink in his Horace on Poetry (1964) writes: ‘The centre of the short piece lies in lines 21—34. Readers, among them critics and poets, had denied one aspect of the Odes which was surely above criticism—the striking originality of these poems. Horace's defence turns on the question of originality’ (p. 180) and ‘Epistle 19 is unique in that it alone among the literary satires and letters reiterates Horace's claim to be the Latin fidicen’ (p. 182). And Dr. McGann in his Studies in Horace's First Book of Epistles (Collection Latomus 100: 1969): ‘In Ep. 19... as in the literary satires, Horace is a practising poet or at least a very recently practising one, engaged in defending himself against hostile criticism’ (p. 40) and ‘As the only epistle concerned exclusively with literary matters, the nineteenth stands apart’ (p. 82).