STUDY OBJECTIVES To locate geographical sources of engine exhaust emissions in Great Britain and to link them with the birth addresses of children dying from cancer. To estimate the cancer initiating roles of nearby roads and railways and to measure effective ranges. DESIGN Birth and death addresses of all children born between 1955 and 1980 in Great Britain, and dying from leukaemia or other...

There has been an increasing need of timely and predictable communication services for embedded real-time systems in automated factories and industrial process controls. Work has been done on real-time communication with deadline guarantees in point-to-point, token bus/token ring/FDDI, and DQDB (Distributed Queue Dual Bus) networks. However, due to the random access nature of the CSMA/CD type m...

With more electric buses, the optimal location of charging station plays an important role for bus electrification. This paper proposes a planning model fast-charging stations transit system, that takes operation network and distribution into account. The 1) simulates buses thoroughly to obtain demand 2) account absorption capacity other constraints in siting determination stage. objective is m...

background: the objective of this study was to measure the total suspended particulate (tsp), pm 10 and pm 2.5 air particulates in the selected intercity bus stations located in the central square of hamadan, to review the distribution concentration of the air particulates content and to evaluate its possible health risk to the people who spent little time of their daily time in those places. m...

In this paper we presents a formal analysis of the start-up algorithm of the DACAPO protocol. The protocol uses TDMA (Time Division Multiple Access) bus arbitration. It is checked that a system of four communicating stations becomes synchronised and operational within a bounded time from an arbitrary initial state. The system model allows a clock drift corresponding to 10 3. The protocol is mod...

This paper presents a formal verification of the start-up algorithm of the DACAPO protocol. The protocol uses TDMA (Time Division Multiple Access) bus arbitration. It was verified that an ensemble of four communicating stations becomes synchronized and operational within a bounded time from an arbitrary initial state. The system model included a clock drift corresponding to ±10. The protocol wa...

Never before humans had access to so much data so easily; however, this scenario disappears as we move away from a computer. In our cities, urban services are provided via supports, which practically have not changed in a century: bus-stop shelters, metro-stations panels and screens, maps or urban furniture 1 . This scenario brings up the opportunity to refresh the idea of services that a city ...

The school bus routing and scheduling problem deals with the transportation of pupils from home to school in the morning and from school to home in the evening. It is a problem in public transportation and differs from typical vehicle routing problems in several aspects, as for example pointed out in [6]. Variants of this problem are often studied in literature. A comprehensive overview of exis...