objective: this research was conducted to investigate the relationship between behavioral activation-inhibition systems and bullyingvictimization behaviors among adolescents. method: this was a correlational and cross-sectional study. two hundred and thirty school boys were selected randomly by multistage cluster sampling method, and participated in this research. this sample responded to a dem...

Cluster sampling is common in survey practice, and the corresponding inference has been predominantly design-based. We develop a Bayesian framework for cluster sampling and account for the design effect in the outcome modeling. We consider a two-stage cluster sampling design where the clusters are first selected with probability proportional to cluster size, and then units are randomly sampled ...

the purpose of this study is to survey ethical organization and its influence on social responsibility of organization in ministry of agriculture jehad. mediator factor in this research is organizational culture. five hypotheses were explored. 313 statistical samples were selected from the staff of ministry of agriculture jehad through multistage sampling. the method of research is descriptive ...

In this paper, we have established a new framework of multistage hypothesis tests. Within the new framework, we have developed specific multistage tests which guarantee prescribed level of power and are more efficient than previous tests in terms of average sampling number and the number of sampling operations. Without truncation, the maximum sampling numbers of our testing plans are absolutely...

Wireless sensor networks consist of hundreds or thousands of nodes with limited energy. Since the life time of each sensor is equivalent to the battery life, the energy issue is considered as a major challenge. Clustering has been proposed as a strategy to extend the lifetime of wireless sensor networks. Cluster size, number of Cluster head per cluster and the selection of cluster head are cons...

objective : this study examined forty nine instances of phobic adolescents pheromena classified in the following seven categories: school phobia, agoraphobia, zoophobia, claustrophobia, social phobia, physician fear, exam anxiety. method: the subjects were 120 female and 120 male high-school and pre-university students selected through random cluster sampling. the data were analyzed through des...

background: the internet is a phenomena that changes human, specially the younger generation’s, life in the 21st century. online communication is a common way of interacting among adolescents who experience feelings of social anxiety. the aim of this study was to investigate the relationship between social anxiety and online communication in adolescents. methods: three hundred and thirty studen...

spiritual identity is conceptualized as defining and identification of oneself based on spirituality and spiritual experiences. this study, in a framework of a causal model, investigated the mediating role of spiritual identity between family communication orientations and loneliness aspects. participants, four hundred undergraduate shiraz university students (268 girls and 132 boys) were parti...