We consider symmetric key predistribution in grid-based wireless sensor networks. Networks consisting of wireless sensor nodes arranged in a grid pattern have many useful applications, including environmental monitoring and agribusiness. The structured physical distribution of nodes in such networks facilitates efficient distribution of keys to the nodes prior to deployment. It has been shown t...

We show that the power of the KPSS-test against integration, as measured by divergence rates of the test statistic under the alternative, remains the same when residuals from an OLS-regression rather than true observations are used. This is in stark contrast to residual based tests of the null of integration in a cointegration setting, where power is drastically reduced when residuals are used....

AIMS Arachidonic acid (AA) and its metabolites, prostaglandins (PG) are known to be involved in regulation of vascular homeostasis including vascular tone and vessel wall tension, but their potential role in Hypoxic pulmonary vasoconstriction (HPV) remains unclear. In this study, we examined the effects of AA and PGE2 on the hypoxic response in isolated rat intrapulmonary arteries (IPAs). MET...

This study aims to investigate the sustainability of three different variables – ecological deficit, economic growth, and private sector credits that have an important role for examination infrastructure processes. In this direction, those in Turkish economy has been analyzed through linear ADF KPSS non-linear Fourier ADF, KPSS, GLS unit root tests periods covering1987-2007 (pre-global crisis),...

OBJECTIVE Widowed fathers and their children are at heightened risk for poor coping and maladaptive psychosocial outcomes. This exploratory study is the first to explicitly examine the psychological characteristics of this population of fathers. METHOD Some 259 fathers (mean age = 46.81; 90% Caucasian) with dependent-age children and whose wives had died from cancer within the previous five y...