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—Wireless sensor network (WSN) requires robust and energy efficient communication protocols to minimize the energy consumption as much as possible. However, the lifetime of sensor network reduces due to the adverse impacts caused by radio irregularity and fading in multi-hop WSN. A cluster-based scheme is proposed as a solution for this problem. The(More)
The present study investigated the inhibitory effect of cobratoxin (CTX) on pain-evoked discharge of neurons in thalamic parafascicular nucleus (Pf) of rats and analyzed some of the mechanisms involved in this effect. Intracerebroventricular injection (icv) of CTX at 0.56, 1.12 and 4.50 microg/kg resulted in a dose-dependent inhibitory effect on the(More)
The relationship between noradrenaline and neuropeptide Y (NPY) release was investigated in the in situ perfused guinea pig heart with intact sympathetic innervation. For determination of NPY concentrations in the perfusate, a specific radioimmunoassay was employed and further characterized. Electrical stimulation of the left stellate ganglion (4, 8, 12,(More)
The smart home concept brings innovation and convenience to our every day's life style. Without context awareness, smart home applications can neither offer adaptive services based on users' dynamic situations nor provide preferential treatments according to users' various preferences. Such a design paradigm forces human to live in the world of machines(More)
In the fast-growing internet applications, email becomes more and more important in communication. SMTP attacks and spam have become one of the most serious problems. Particularly, the SMTP attacks and spam varies on email, for example spoofing address, illegal characters, sending in bulk, too many SMTP commands and so on. A single security technique is not(More)