this paper aims at determining isfahan provincial industries orientation as well as relating the comparative advantage indexes and their changes with the province’s industrial characteristics. therefore, applying “factor analysis”, “principal components analysis” and “numerical taxonomy analysis” methods, the paper calculates the determining indexes of the province’s industrial development and ...

resources’ scarcity, especially in developing countries, has caused allocation essentially among competing activities to create value. the importance of resource allocation would be more understood if we pay attention to growing complexity in societies and economic development problems they face. in the context of the national economic development literature, the notion of “key or critical sect...

da Silva, G. A. Nigel (Iowa State University, Ames), and John G. Holt. Numerical taxonomy of certain coryneform bacteria. J. Bacteriol. 90:921-927. 1965-An electronic computer was used to sort 32 strains of coryneforms into groups with the tree-sort program. The similarity values obtained in this procedure were then used to construct a dendrogram depicting the phenetic resemblance among the tax...

There are presented automatic classification methods which, according to the authors' conceptions, are specific to biology. In section 1 there are included the necessary steps made in the automatic classification. In section 2 there are presented 2 methods of automatic classification which are frequently used in any field and in opposition with it the section 3 presents another method from lite...

Sub-dominant theory provides efficient tools for clustering. However it classically works only for ultrametrics and ad hoc extensions like Jardine and Sibson’s 2ultrametrics. In this paper we study the extension of the notion of sub-dominant to other distance models in classification accounting for overlapping clusters. We prove that a given dissimilarity admits one and only one lower-maximal q...

Nielsen's (1969) article in the last issue of this Newsletter motivated me to write the following comments. It was not because he criticized numerical taxonomy (NT), but rather, in my opinion, he criticized aspects of NT that either a) no longer need to be criticized, or b) are not the fault of the methods of numerical taxonomy but of the people who use them, in this case, Steward (1968). Like ...

today, the knowledge of regions’ strong and weak points and the existing gaps between regions is necessary for better planning and programming to deal with them. using such indexes as economic, sociologic, cultural, sanitary and other indexes which can be good criteria for the position and place determination of these quotients, is the main solving problem factor to achieve economic welfare, so...