in this paper price and non- price factors affecting the area of sugar beet cultivation was been studied, using a logarithmic model and a cross sectional data on 195 producers of sugar beet in khorasan province in 2003 producers were selected based on stratified random sampling method. results of study showed that percent of  sugar (an impostor), type of seed, yield of sugar beet in the last ye...

this inverstigation is a quasi-experimental study comparing the effects of two methods of health education on student's knowledge and attitudes about aids. the target population consisted of 218 male undergraduates studying in payame noor university in saghez, iran. a random sample of 106 students was selected using sample random sampling method. the students were randomly divided into two...

this study intends to recognize the factors affecting advertising creativity based on stuhlfout and yoo’s model and according to the ideas of creative directors in iran. the research methodology was causal survey method. data were collected from a sample of 90 experts, selected out of 135 based on simple random sampling. the questionnaire prepared by help of different standard questionnaires an...

The focus of this paper is to consider the compressed sensing problem. It is stated that the compressed sensing theory, under certain conditions, helps relax the Nyquist sampling theory and takes smaller samples. One of the important tasks in this theory is to carefully design measurement matrix (sampling operator). Most existing methods in the literature attempt to optimize a randomly initiali...