The thermodynamical property of a small cluster including M Hubbard dimers, each of which is described by the two-site Hubbard model, has been discussed within the nonex-tensive statistics (NES). The temperature dependence of the energy, entropy, specific heat and susceptibility has been calculated for M = 1, 2, 3 and ∞ (corresponding to q = 1) with the use of the relation between the entropic ...

the steel slag is the main by-product of steel industry. the aim of this study using the steel slag as a low-cost absorbent in order to remove cadmium pollutant from industrial wastewater. some factors that affect the process of cadmium removal by steel slag such as ph, contact time, absorbent dosage and cadmium initial concentration has been studied. standard solution of synthetic wastewater i...

The Arab industrial establishments specialized in the manufacture of "street furniture" units are witnessing a crisis and cognitive deviation; for example, "Public Bench"

The debate over the contribution of the Internet to democracy is farfrom settled. Some point to the empowering effects of online discussionand fund raising on recent electoral campaigns in the US to argue thatthe Internet will restore the public sphere. Others claim that the Internetis just a virtual mall, a final extension of global capitalism into everycorner of our lives. This paper argues f...

As a first step toward an emergentist theory of collective cognition in collaborative problem solving, we present a proto-theoretical account of how one might conceive and model the intersubjective processes that organize collective cognition into one or another—convergent, divergent, or tensive—cognitive regime. To explore the sufficiency of our emergentist proposal we instantiate a minimalist...

Measurements of cardiac output and intra-arterial pressure on 5 normal young men and 5 hypei tensive patients before and during sedation with Amytal demonstrated a decreased cardiac output and an increased peripheral resistance during the period of sedation. It is concluded that the theoretic basis for the use of Amytal sedation as a device for selection of hypertensive patients for sympathecto...