In wireless sensor networks, the key deployment problem has received little attention, whereas it is in fact fundamental, heavily involving crucial (scarce) resources of ad-hoc networks, such as memory and energy availability. In this paper, we first briefly survey the state-of-the art of key deployment strategies that are amenable to ad-hoc network. Then we proposed two possible methods and we...

This study was designed to investigate the effect of grammar and vocabulary pre-teaching, as two types of pre-reading activities, on the Iranian EFL learners’ reading comprehension from a schema–theoretic perspective. The sample consisted of 90 female students studying at pre-university centers of Isfahan.  The subjects were randomly divided into three equal-in-number groups. They participated ...

background: lead toxicity is a prevalent health problem in both developed and developing countries. one of the proposed mechanisms for lead-induced organ damage is oxidative stress. oxidative stress is well-associated with the pregnancy disorder, pre-eclampsia. exposure to lead may be one of the sources of the oxidative stress that leads to development of pre-eclampsia in pregnant women. object...

acute lymphoblastic leukemia (all) is a malignant disorder of lymphoid precursor cells, which could be classified according to morphological and cytochemical methods as well as immunophenotyping. twenty patients with all, who had been referred to the children's medical center hospital, during the year 2007, were enrolled in this study in order to evaluate the morphologic and immunophenotypic pr...

objective: many studies have shown that the level of postoperative distress and anxiety in children is associated with the amount of anxiety during the pre operative period. in this study, we compared the effect of pre-operational attending in a playroom and using play activities on the level of anxiety increment after surgery in an intervention and a control group of iranian children. method: ...

Background Pre-eclampsia is one of the main causes of morbidity and mortality among pregnant women. This study was done with the objective of measuring abdominal aorta intima-media thickness, serum level of leptin, and lipid profile in neonates of pre-eclampsia mothers and comparing them with neonates of mothers without pre-eclampsia (control group). Materials and Methods Ninety neonates of pre...