This paper presents the dynamic modeling and design of micro motion compliant parallel mechanism with flexible intermediate links and rigid moving platform. Modeling of mechanism is described with closed kinematic loops and the dynamic equations are derived using Lagrange multipliers and Kane’s methods. Euler-Bernoulli beam theory is considered for modeling the intermediate flexible link. Based...

this survey-study carried out among 360 randomly selected farmers living in drought-prone areas of fars province, iran, set out to investigate the perceptions and psychologi-cal coping strategies of farmers when facing drought. results showed that farmers per-ceived drought as a threat to all of their resources (material, conditions, personal, social and energies) and used emotion-focused and r...

the main purpose of this paper is to present a fuzzy multi-criteria decision making (fmadm) model for appropriate location selection of a health center. therefore, we identify sixteen criteria and sub-criteria for selecting a health center location. these criteria and sub-criteria have been obtained from literature reviews and practical interviews. this paper proposes a method which combines th...

background: to define underlying predictors of tobacco smoking among iranian teenagers in a generalized structural equation model. materials and methods: in this cross-sectional study, a generalized structural equation model based on planned behavioral theory was used to explain the relationship among different factors such as demographic factors, subjective norms, and the intention to tobacco ...

the aim of this research is to investigate the relationship between leader – member exchange and organizational citizenship behavior, and considering the mediating role of psychological empowerment and organizational commitment. the sample consisted of 250 employees of marun oil and gas producing company who were selected by simple random sampling method. the instruments which used in this rese...

Structural equation modeling (SEM) provides a dependable framework for testing differences among groups on latent variables (constructs, factors). The purpose of this article is to illustrate SEM-based testing for group mean differences on latent variables. Related procedures of confirmatory factor analysis and testing for measurement invariance across compared groups are also presented in the ...

widespread usage of web technology provides an opportunity for business in order to use internet as the tool for management of electronic relationship with costumers. organizations that undertake expense of investment in this field, one of their primary purposes is improvement of satisfaction of costumers. for this reason, in most of organizations which use the system of electronic relationship...

Modeling the flow curves of materials at elevated temperatures is the first step in mathematical simulation of the hot deformation processes of them. In this work a comparative study was provided to examine the capability of three different constitutive equations in modeling the hot deformation flow curves of AZ91 magnesium alloy. For this, the Arrhenius equation with strain dependent constants...