we are again in want of satisfactory reliable data. None exist that I know of. But if it is so, surely fever should be prevalent at all seasons when the heat is sufficient to generate the poison. Irrigation is used chiefly, I believe, to supplement the natural rain-fall, so that if it acts in this way as a cause, it ought to do so more in seasons of deficient rains than in other years, for then...

INTRODUCTION Fruit and vegetable cost may influence consumption. Because the contextual environment influences food outlet type and availability, we wanted to determine whether neighborhood demographics were associated with prices of fruits and vegetables. METHODS We surveyed 44 grocery stores in the Birmingham, Alabama, metropolitan area to determine prices of 20 fruits and vegetables. Store...

The Medium Scale Travelling Ionospheric Disturbances (MSTIDs) are the most frequent wave signatures in the ionosphere, with amplitudes up to several TECUs, periods from several hundreds to one-two thousands of seconds, and propagation velocities from 50 to +300 m/s, mainly equator-eastward in winter/fall seasons, and westward in summer/spring seasons (M. Hernandez-Pajares et al., Radio Science,...

Definition: An independent set (IS) of a graph is a set of vertices of the graph that have no edges in common. The number of vertices in the set gives the cardinality of the IS and the IS with the maximum cardinality is called the maximum (or maximal) independent set (MIS) of the graph. Note that in general, the solution may not be unique, i.e. there could be more than one MIS in a graph (depen...

4.1.1 Step size selection rule Choosing the optimum step size α is desirable, but it may be computationally expensive. Hence, some other set of rules, which have good properties, e.g., convergence, are desirable. We illustrate one such rule in the following example, which is called as successive reduction rule. Example 4.1.1. Successive reduction rule: Start with an initial step size s > 0 and ...

Six varieties of durum wheat were included in a full diallel mating design during 2003-2004 and 2004-2005 cropping seasons in the farm of Maragheh Dryland Agricultural Research Institute (DARI), Iran. Parental durum wheat genotypes and their complete diallel progenies were grown in a randomized complete block design with two replications in the growing seasons of 2005-06. The highest values of ...