Due to the W-CDMA radio interface, the area covered by a set of UMTS base stations depends on the signal quality requirements, the power control mechanism as well as on the traffic distribution. In previous work we have proposed discrete optimization models and algorithms for locating base stations in UMTS networks. In this paper we address the general problem of optimizing base station locatio...

conclusions the findings point to a relationship between neighborhood characteristics and obesity only in the azeri turks. however, educational level was more important than neighborhood quality in predicting the risk of obesity results three common neighborhood environments were identified: 1) modern-affluent, 2) central-high access and 3) marginal. these three factors explained 73.2% of the t...

It is easily seen that the Kasner circle, mentioned in I, shrinks to a point. Thus II loses its meaning, the derivative clock being merely a point. But III' does not become meaningless. For the associated affinity T reduces to the functional relation between the points of a neighborhood of z and the corresponding values of w'(z). Thus the assertion that T is a direct similarity says exactly tha...

for an exterior differential form so on an analytic complex subvariety W. The problem arises because an analytic complex subvariety in a domain D of Cn (or, more briefly, an analytic set in D) is not, in general, a manifold. We give (a) an existence theorem for t(p) and (b) a proof that t is a closed current in D, that is, t(4b) = 0 for the forms 41 with compact support, which are homologous to...

We show that the existence of a countable, first countable, zerodimensional, compact Hausdorff space which is not second countable, hence not metrizable, is consistent with ZF. 1. Notation and terminology Definition 1.1. Let (X,T ) be a topological space and B a base for T . (i) X is said to be compact if every open cover U of X has a finite subcover V . X is said to be compact with respect to ...

following the idea of $l$-fuzzy neighborhood system as introduced byfu-gui shi, and its generalization to $(l,m)$-fuzzy neighborhood system, the relationship between  $(l,m)$-fuzzy topology and $(l,m)$-fuzzy neighborhood system will be further studied. as an application of the obtained results, we will describe the initial structures of $(l,m)$-fuzzy neighborhood subspaces and $(l,m)$-fuzzy top...

We prove that every simple connected graph with no K5 minor admits a proper 4-coloring such that the neighborhood of each vertex v having more than one neighbor is not monochromatic, unless the graph is isomorphic to the cycle of length 5. This generalizes the result by S.-J. Kim, S. J. Lee, and W.-J. Park [Dynamic coloring and list dynamic coloring of planar graphs, submitted, 2012] on planar ...

It is well-known that optimally stopping the sample mean W(t)/t of a standard Wiener process is associated with a square root boundary. It is shown that when W(t) is replaced by X(t)=W(t)+Ot with () normally distributed N(JL,(]2) and independently of the Wiener process, the optimal stopping problem is equivalent to the time-truncated version of the original problem. It is also shown that the pr...

In a communication network, the vulnerability parameters measure the resistance of the network to disruption of operation after the failure of certain stations or communication links. A vertex subversion strategy of a graphG, say S, is a set of vertices inGwhose closed neighborhood is removed from G. The survival subgraph is denoted by G/S. The neighbor rupture degree of G, Nr(G), is defined to...