wireless sensor networks (wsns) have many applications in the areas of commercial, military and environmental requirements. regarding the deployment of low cost sensor nodes with restricted energy resources, these networks face a lot of security challenges. a basic approach for preparing a secure wireless communication in wsns, is to propose an efficient cryptographic key management protocol be...

OBJECTIVE To examine whether low managerial quality predicts risk of depressive disorders. METHODS Using multilevel mixed-effects logistic regression analyses we examined the prospective association of individual-level and workplace-mean managerial quality with onset of depressive disorders among 5244 eldercare workers from 274 workplaces during 20 months follow-up. RESULTS Low managerial q...

The differences between the term «involvement» and terms «satisfaction» «loyalty» are analyzed. It is concluded that involvement an emotional intellectual state motivates, stimulates inspires employees to do their best provides long-term concentration in solving work tasks, regardless of age, gender working conditions company. Involvement can be called most important criterion modern enterprise...

in the nursing profession, leadership plays a significant role in creating motivation and thus enabling nurses to provide high quality care. ethics is an essential component of leadership qualifications and the ethical leader can help create an ethical atmosphere, offer ethical guidance, and ensure the occupational satisfaction of personnel through prioritizing moralities. however, some issues ...