Elevator systems for vertical transport of passengers are implemented in modern high-rise buildings. Conventional elevator systems use up and down hall-call buttons for calling an elevator service, a group of local control systems (LCS), one per elevator, and an Elevator Group Control System (EGCS) which selects the most suitable elevator for attending a hall-call. The performance of an elevato...

The elevator group control systems are the control systems that manage systematically, three or more elevators in order to efficiently transport the passengers. In the elevator group control system, the area-weight which determines the load biases of elevators is a control parameter closely related to the system performance. This correspondence proposes a fuzzy model based method to determine t...

BACKGROUND Flat and depressed lesions are becoming increasingly recognized in the esophagus, stomach, and colon. Various techniques have been described for endoscopic mucosal resection (EMR) of these lesions. AIMS To evaluate the efficacy of lift-grasp-cut EMR using a prototype dual-channel forward-viewing endoscope with an instrument elevator in one accessory channel (dual-channel elevator s...

BACKGROUND Osteotome sinus floor elevation is a less invasive approach to augment an insufficient alveolar bone at the posterior maxilla for dental implantation. However, this approach has some limitations due to the lack of sinus lift tools available for clinical use and the small transcrestal access to the maxillary sinus floor. We recently invented shape-memory Ni/Ti alloy wire containing tu...

background and aims: this study aimed to investigate the deaths and injuries following pedestrian traffic accidents and factors associated with death of pedestrian in tehran and alborz provinces. methods: in this cross-sectional study all traffic accidents related to pedestrians in tehran and alborz provinces reported from march 21, 2013 to march 21, 2014 by the traffic police were studied. the...

A project work was done within the time frame of January to December 2004 in Islamic University of Technology, Gazipur, Bangladesh. The main objective of this work is to design a Flexible Material Handling System (FMS) that can automatically synchronize its speed as per requirement. The system is designed for two types of conveyor system where the speed of the horizontal conveyor belt will be r...

Multi-Car Elevator (MCE) systems, which consist of several independent cars built in the same shaft, are being considered as the elevators of the next generation. In this paper, we present MceSim, a simulator of MCE systems. MceSim is an open source software available to the public, and it can be used as a common testbed to evaluate different control methods related to MCE systems. MceSim was u...

Abstract The elevator brake is an important part to ensure the safe operation of elevator, and its performance directly determines safety whole machine. This paper describes a test scheme principle, makes reliability through device for brake, recording suction release voltage, response time, surface temperature delay time mechanical parts on both sides after specific number action. analysis cha...