development of new cultivars with high grain yield (gy) stability and good adaptability under both terminal drought stress (tds) and normal irrigation conditions, which plays important role in production of wheat, is one of the major goals of wheat breeding program for cold dry areas of iran. the objective of this investigation was to study the stability and adaptability of gy and genotype × lo...

A point location scheme is presented for an n-veriet dynamic planar subdivision whose underlying graph is only required to be connected. The scheme uses O(n) space, yields an O(log2 n) query time and an O(1ogn) update time. Insertion (resp. deleiion) of an arbitrary k-edge chain inside a region can be performed in O(klog(n+k)) (resp. O(k1ogn)) iime. The scheme is then ectended to speed up the i...

We present a new quick algorithm for the solution of the well-known point location problem and for the more specific problem of point-in-polygon determination. Previous approaches to this problem are presented in the first sections of this paper. In the remainder of the paper, we present a new quick location algorithm based on a quaternary partition of the space, as well as its associated cost ...

majority of models in location literature are based on assumptions such as point demand, absence of competitors, as well as monopoly in location, products, and services. however in real-world applications, these assumptions are not well-matched with reality. in this study, a new mixed integer nonlinear programming model based on weighted goal programming approach is proposed to maximize the cap...