In this study, the effect of four-spin exchanges between the nearest and next nearest neighbor spins of honeycomb lattice on the phase diagram of S=3/2 antiferomagnetic Heisenberg model is considered with two-spin exchanges between the nearest and next nearest neighbor spins. Firstly, the method is investigated with classical phase diagram. In classical phase diagram, in addition to Neel order,...

learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

The aim of this research was to inquiry psychometrics specifications of ethical characteristics scale in high school students. For this purpose, a sample of 693 students of high school in Oumieh was selected by cluster-stratified- randomly sampling. Five-choice 72-question scale inventories prepared by the researcher were used for assessment of moral characteristics. For extracting factors main...

This study aimed at determining the most suitable spacing (plant and ridge) in the conventional melon cultivation in Varamin region in order to achieve higher yield and marketable fruits. The experiment was conducted as a strip split plot statistical design with three replications, in two years, at the Agricultural Research Center of Varamin, Iran. The main factor (vertical) included four plant...