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Showing papers by "Korea University published in 1977"


Journal ArticleDOI
Chil-Sup So1
Abstract: Thirty samples of the sphalerite from sixteen Korean Pb-Zn deposits of various geologic settings were studied spectroanalytically. Variations in the trace-element contents of the sphalerite are considered in relation to geologic settings and mineralogic properties. Sphalerites from ore deposits developed in similar geologic settings and under similar physicochemical conditions are characterized by specific combinations of trace elements.

3 citations


Journal ArticleDOI
TL;DR: In this article, a practical method of intra-and inter-block analysis of Partially Balanced Block Designs (PBBD) having Binary Number Association Scheme (BNAS) or Balanced Factorial Experiments (BFE) is presented.
Abstract: This paper is concerned with the application of the Properties A and B associated with the incidence matrix to the analysis of Partially Balanced Designs having Binary Number Association Scheme (BNAS) or Balanced Factorial Experiments (BFE). We present a practical method of intra-and inter-block analysis of Partially Balanced Block Designs (PBBD) having BNAS. All group divisible association scheme designs, rectangular association scheme designs, hierarchical group divisible block designs, and direct product designs are BNAS PBB designs. The method presented in this paper will unify and simplify the calculations for the above various designs when compared with presently available procedures. Also, we extend the method to the PAB type rectangular designs. The various computational steps in the statistical analysis are presented with numerical examples.

2 citations