Given an elevated prevalence of respiratory disease and density of pollution sources, residents of Roxbury, Massachusetts, have been interested in better understanding their exposures to air pollution. To determine whether local transportation sources contribute significantly to exposures, we conducted a community-based pilot investigation to measure concentrations of fine particulate matter (p...

background: due to the lack of proper rail road and air transportation, most commutes in iran are carried out by buses. in most cases, the water in the busses is used for passengers for drinking usage. although this kind of water source has provided convince for the travelers, it could be a great risk in disease outbreak. the aim of this study is to determine the water quality in commuting buse...

Bus terminal assignment with the objective of maximizing public transportation service is known as bus terminal location problem (BTLP). We formulate the BTLP, a problem of concern in transportation industry, as a p-uncapacitated facility location problem (p-UFLP) with distance constraint. The p-UFLP being NP-hard (Krarup and Pruzan, 1990), we propose evolutionary algorithms for its solution. A...

We describe a \topology advisor" for routing of critical (multi-source) buses in building-block design. The tool accepts as input a block layout, a two-layer routing cost structure superposed over the block layout, terminal locations for a multi-source bus, and source-sink delay upper bound (linear or Elmore delay) constraints for all terminal pairs. The b best routing solutions (b a user param...

We describe a \topology advisor" for routing of critical (multisource) buses in building-block design. The tool accepts as input a block layout, a two-layer routing cost structure superposed over the block layout, terminal locations for a multi-source bus, and source-sink delay upper bound (linear or Elmore delay) constraints for all terminal pairs. The b best routing solutions (b a user parame...

in this paper a new algorithm based on phasor measurements for estimating the thévenin equivalent (te) and system inertia constant is proposed. the method estimates the network te seen from a generator terminal and equivalent system inertia constant by means of phasor data that is available at phasor data concentrator (pdc) center. it is shown that the parameters of the te could be estimated at...

In order to test and verify the phenomena of power system voltage collapse, this article chooses a single-load infinite-bus single-machine as sample systems based on PS-5G carry out stability physical tests, an induction motor adjustable resistor are used constitute comprehensive load. The results show that in system, with decrease resistance gradually, load active is gradually increasing bus d...