The general purpose of this study was to examine the efficiency of the Precision Efficacy Analysis for Regression (PEAR) method for choosing appropriate sample sizes in regression studies used for precision. The PEAR method, which is based on the algebraic manipulation of an accepted cross-validity formula, essentially uses an effect size to determine the subject-to-variable ratio appropriate f...

Although the Internet is still primarily an information resource, there is increasing emphasis on its instructional potential. Practitioners can receive Internet-based information and education from a variety of sources around the world. However, they must learn to assess this information and to assimilate it into knowledge that will help them in their practices. They must also be given the opp...

This paper focuses on the role of human capital in reducing the barriers to firms’ engagement in innovation activities. The paper distinguishes between firms facing barriers that stop them from engaging in any innovation activity, and firms that face impediments in the course of their innovation activity. We investigate whether human capital has a particularly strong impact in relation to lower...

background: awareness about the actual information needs is a necessity in correct decision making for developing or improvement of information centers. this study aimed on investigating the information needs of students and university professors of birjand university of medical sciences. methods: in this descriptive-analytical study conducted in 2009, 422 students were selected based on system...