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5.300  Articles
1 of 530 pages  |  10  records  |  more records»
The objective of this study was to examine the effects of repeated freeze-thaw cycles and short-term storage of fecal extracts at ambient temperature on the stability of fecal glucocorticoid (fGCM) and estrogen metabolite (fEM) levels from crested macaque... see more

In this paper we improve the upper bound on the multi-color Ramsey numbers of paths and even cycles. More precisely, we prove the following. For every r=2r\geq 2 there exists an n0=n0(r)n_0=n_0(r) such that for n=n0n\geq n_0 we have Rr... see more

Burr, Erdos, Faudree, Rousseau and Schelp initiated the study of Ramsey numbers of trees versus odd cycles, proving that R(Tn,Cm)=2n-1R(T_n, C_m) = 2n - 1 for all odd m=3m \ge 3 and n=756m10n \ge 756m^{10}, where TnT_n is a tree with nn vertices and CmC_m... see more

An extremal graph for a graph HH on nn vertices is a graph on nn vertices with maximum number of edges that does not contain HH as a subgraph. Let Tn,rT_{n,r} be the Turán graph, which is the complete rr-partite graph on nn vertices with part sizes that d... see more

The edge-distinguishing chromatic number (EDCN) of a graph G is the minimum positive integer k such that there exists a vertex coloring c : V(G)?{1, 2, …, k} whose induced edge labels {c(u),c(v)} are distinct for al... see more

In this paper, we first coin a new graph theoretic problem called the diameter cycle problem with numerous applications. A longest cycle in a graph G = (V, E) is referred to as a diameter cycle of G iff the distance in G of every vertex on ... see more

The article offers a new product based theory of economic cycles. The theory explains economic activity fluctuations from the point of life-cycle of marketable goods and services.Based on our assumptions, we have created a model of world GDP and described... see more

This paper measures and explains to what extent Latin American countries’ growth cycles experienced co-movement in the last forty years, using different methodologies. We find that short lasting cycles showed a great dispersion among cyclical correlation,... see more

We analyze the temporal distribution of sunspot groups for even and odd cycles in the range SC12- SC24. It seems that cycle 24 is a characteristic even cycle, although with low amplitude. The number of large sunspot groups for cycle 24 is relatively small... see more

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