A clarification of numbers.

A clarification of transmission terms in host-microparasite models: numbers, densities and areas.

Transmission is the driving force in the dynamics of any infectious disease. A crucial element in understanding disease dynamics, therefore, is the 'transmission term' describing the rate at which susceptible hosts are 'converted' into infected hosts by their contact with infectious material. Recently, the conventional form of this term has been increasingly questioned, and new terminologies an...

Extend a ranking method of trapezoidal fuzzy numbers to all fuzzy numbers by a weighting functions

Recently Abbasbandy and Hajjari (Computers and Mathematics with Applications57 (2009) 413-419) have introduced a ranking method for the trapezoidalfuzzy numbers. This paper extends theirs method to all fuzzy numbers,which uses from a defuzzication of fuzzy numbers and a general weightingfunction. Extended method is interesting for ranking all fuzzy numbers, and itcan be applied for solving and ...

Coordination: A Clarification

Ever since Hayek’s 1937 classic, “Economics and Knowledge,” Austrians and other sympathetic writers have rightly emphasized study of the coordination properties of an economic system. To this end, they have claimed a distinction between the Hayekian focus on coordination and the neoclassical focus on equilibrium and efficiency. Although genuine and important, this distinction has yet to be sati...

Clarification

Thrombotic risks: a clarification.

To the Editor: Rogier M. Bertina has written a clear, timely, and authoritative review of factor V Leiden and other coagulation factor mutations affecting thrombotic risk (1). I was confused by the fact that the sum of genetic defects in inherited thrombophilia plus the cases with unknown cause add up to 109.7% (Table 1 of reference 1). This could occur due to multiple defects in individual pat...