in general, productivity is gaining maximum profit from manpower, equipments, time, place, and son on in order to enhance social welfare. without doubt, promoting productivity at individual, group, and organizational levels depends on different factors. this research is about to find a model to recognize influencing factors on workers’ productivity in the mst group, and to show relationships am...

The present paper aims at studying factors affecting knowledge workers’ productivity in national Iranian Oil Company, using descriptive survey method. 90 experts working at staff divisions were sampled, using census method and responded to a reliably confirmed questionnaire. One sample t test revealed at α= 0.05 that individual level factors, such as competence, job satisfaction, proficiency ha...

We investigated the effects of arbuscular mycorrhizal fungal (AMF) species richness and composition on plant community productivity and diversity, and whether AMF mediate plant species coexistence by promoting niche differentiation in phosphorus use. Our experiment manipulated AMF species richness and identity across a range of P conditions in tallgrass prairie mesocosms. We showed that increas...

the plant promoting bacteria as biological fertilizers play an important role in increasing productivity and improving plant growth in stress condition. in order to evaluate the ability of plant promoting bacteria rhizobacteria on germination and growth of corn under salinity conditions, a pot experiment was conducted in factorial based on randomized complete block design with three replication...

The aim of this study is to examine the relationship between individual factors and workforce productivity in Guilan Gas Company. In order to examine the relationship between individual factors and productivity, the Pearson correlation test was used. Moreover, regression analysis used to examine the effects of individual factors on labor productivity. The results showed that among the individua...