In this paper, delay constrained performance of a multiple-input multiple-output (MIMO) communication system in a dense environment with co-channel interference is investigated. We apply orthogonal space-time block coding (OSTBC) at the transmitter, and for alleviating the high complexity and cost of the MIMO system, receive antenna selection (RAS) scheme is employed in the downlink. Here, for ...

Background: Fertility is one of the important subjects in public health and demographic studies which affects population growth. The main objective of this paper was to introduce and apply a tree model to classify the ideal number of children and children ever born in the study of "Marriage and Fertility Attitudes of Married 15-49 Years Old Women in Semnan Province in Iran, 2012". Methods: Cla...

*Correspondence: [email protected] 1Department of Mathematics, Faculty of Mathematics, Statistics and Computer Sciences, Semnan University, Semnan, 35195-363, Iran 3Young Researchers and Elite Club, Malayer Branch, Azad University, Malayer, Iran Full list of author information is available at the end of the article Abstract In this paper, we introduce the concept of normed Lie superalgebr...

Objectives: Regarding the type of service receivers as well as the technicality of the services provided, these services often bear high complexity and difficulty which can eventually lead to job burnout and shortage of motivation in the staffIn this study, the factors affecting job motivation from the viewpoints of staff and managers of Semnan Welfare Organization have been identified and poss...

Salvia leriifolia (Lamiaceae) is an endemic endangered plant of Khorasan and Semnan province from Iran. Poor germination of seeds for this plant is a serious problem tomass production. The first step to improve this precious plant is to produce sterile plantlets in order to prepare explants of appropriate vigor. In this study, in vitro culture of Salvia leriifolia embryo was performed through a...

Background Physicians need to apply new technologies in ambulatory care. At present, with regard to the extended use of information technology in other departments in Iran it has yet to be considerably developed by physicians and clinical technicians in the health department. Objective To determine the rate of use of health information technology in the clinics of specialist- and subspecialis...

BACKGROUND This study aimed at determining the drug abuse pattern and the frequency of high-risk behaviors among the clients of Methadone Maintenance Treatment Centers and Drop-in Centers in Shahroud County of Semnan Province. METHODS In this cross-sectional study, the data collection tool was a questionnaire including 10 general and 32 specific items about drug abuse pattern and high-risk be...

The understudied Black-tailed toad agama, Phrynocephalus maculatus maculatus, (Anderson, 1872) belongs to the Agamidae family. Iranian specimens are rare in collections and are distributed in the central and south-eastern deserts of Iran. In this research, biological studies including food habits, morphology, behaviors and habitats of these species were performed from April to September, 2013. ...

the present research studies how material and non-material factors could attract people to work in public and private sectors. the study focuses on the effect of financial incentives on better performance in the workplace, as well as the importance of wages, job security, authority, and job satisfaction in both the public and the private sectors. research subjects are all public and private sec...