the structural properties of a new cyclic phosphor amide have been investigated in three methods and four basis sets and results have been compared with experimental data by spss. the best level for this type compound is hf/6-31++g** and with considering to this result, at this level, hyper chem input as initial geometry have been evaluated.

Business is an activity carried out by individuals and organizations that create value through goods services to obtain a profit. In running business, marketing strategy the main key in product development for progress of company. Marketing not only service development, but also needs take into account customer segmentation. Segmentation has done using K-Means Clustering based on SPSS. this stu...

Classroom Action Research (CAR) is a scientific observation of classroom learning practices. As part action research, research intended as input, evaluation, and improvement the quality in classroom. CAR training important relevant for following reasons. First, can improve education through improving process. Second, motivating teachers to produce works from environment daily activities. Third,...

Sunshine hours are the only long term, reliable and available measured information that can be used to reach highly accurate estimates of solar radiation values on the Earth surface. In this paper the sunshine duration is used to estimate monthly average daily solar radiation on a horizontal surface, it can be used to predict solar radiation in different climatic region of Iran. According to th...