the current study aimed to investigate the perception of servant leadership situation and its relationship with social capial. the method is descriptive and the research project is of correlational type. the statistical population consists of all employees of the keshavarzi bank among which 196 were selected by stratified random sampling method. data were gathered through two standard questionn...

In stratified random sampling, minimizing the variance of a total estimate leads to the optimal allocation. However, in practice, this original method is scarcely appropriate since in many applications additional constraints have to be considered. Three optimization algorithms are presented that solve the integral allocation problem with upper and lower bounds. All three algorithms exploit the ...

this study aimed at the frequency and type of using cell-phone by high school students. the research method used was a descriptive-survey one. the statistical society included all the high school students in mazandran in 2010-11 academic year. the sample was chosen through multi-stage stratified random sampling method and 383 subjects were selected based on kerjecie and morgan's table. a r...

Objective: A study was conducted to ascertain the impact of dysmenorrhea on quality life of adolescent girls of Chandigarh. Methods: Multistage stratified sampling was done and 5 sectors, 5 villages, 5 slums were selected by lottery method. Then from each area 20 respondents were selected by simple random sampling. A Self-designed interview schedule was used to collect data from 300 Adolescent ...

A sequential mixed method approach was used to answer the research questions that guided this study. First, a survey was conducted among principals. Using a stratified random sampling 250 primary school principals from all over Cyprus (total population was 336) participated in this study. Data were collected through questionnaires, which were mailed to the principals. One hundred and thirty one...

family functioning among woman whit superior, ordinary and weak hijab. this is a causal-comparative descriptive study. the population includes all iranian females over 15 years of age from among whom a sample of 2868 subjects was selected using the stratified cluster random sampling method. the required data were collected using a demographic questionnaire. the obtained data were analyzed using...