Background: The construction of metro lines is a high-risk project. Using a budget-based model for the safety units of metro construction projects can help safety managers to spend optimal budget allocation. The purpose of this study was to plan a budget model based on safety unit performance in an under construction metro station for better budget allocation using robust optimization. Methods...

Mr. Vukan R. Vuchic deals with the latest developments of metro networks and with their future state in the 21st century. He recalls the basic characteristics of metro and the positive and stimulating role it can play in large cities. While its first networks were opened more than a century ago, metro still knows an important growth: for example, it is the best adapted means of transport in som...

Associate Professor, Department of Virology, Pasteur Institute of Iran, Tehran, Iran Assistant Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences AND Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran Associate Professor, Dental Research Center, Dentistry Research Institute, Tehran Unive...

Elevated rail transit has been developed in some big cities in China in recent years. However, specialized codes for design of the bridges in the elevated rail transit system have not yet been established. Based on the prestressed concrete (PC) box girder bridges on Guangzhou metro line 4, some technical features of design principle and technology requisition, ensemble plan and design load of b...

positive impact metro cell antennas with narrow vertical beamwidth and electrical downtilt can have on heterogeneous cellular networks. Using a model of random cell placement based on Poisson distribution, along with an innovative 3D building model that quantifies blockage due to shadowing, it is demonstrated that network spectral efficiency and average user throughput both increase as vertical...

1 Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran; 2 Metabolomics and Genomics Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran; 3 Toxicology and Diseases Group, Pharmaceutical Scie...

1Children’s Medical Center, Pediatrics Center of Excellence, Tehran University of Medical Sciences, Tehran, IR Iran 2Pediatric Rheumatology Research Group, Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, IR Iran 3Department of Pediatrics, Tehran University of Medical Sciences, Tehran, IR Iran 4Valiesar Hospital, Imam Khomeini Complex Hospital, Tehran University of M...

Author details Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran. Traditional Iranian Medicine and Pharmacy Research Center, Tehran University of Medical Sciences, Tehran, Iran. Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran. Department of Pharmacology and Toxicology, Faculty of Pharm...