Urban traffic state evolution analysis is very significant and constructive for traffic guidance and control. In this paper, a quantitative method for analyzing regional traffic state evolution was proposed by constructing traffic state pattern transition network to mine regional traffic state information and state pattern transition characteristics from massive data. Based on the method, a GIS...

There is an increasing scientific interest in studying vehicular traffic pollution road tunnels. This due both to the evaluating effect that different polluting gases can have on driving style of motorists and also hypothesis tunnels could be considered as closed systems which traffic–pollution correlation easier study because it more easily separated from other effects. In this work, a system ...

Secondary organic aerosols (SOA) are crucial components of ambient particulate matters. However, their composition and formation mechanisms remain uncertain. To investigate the SOA evaluate various estimation approaches, a comprehensive measurement was conducted at an urban site, Changzhou, in Yangtze River Delta (YRD) region. 98 kinds volatile compounds (VOCs) were measured by online gas chrom...

In recent years, several hypotheses have emerged to explain the toxicologic activity of particulate matter. Organic compounds, ultrafine particles, biologic components, and transition metals are some of the constituents that reportedly exert some type of adverse effect on human health. A considerable fraction of the urban particulate matter consists of carbon compounds, which originate mostly f...

Vehicular exhaust mainly consisting particulate matter sometimes called black carbon pollution is a mixture of solid and liquid components that form tiny particles that float in the air as a result of combustion of fuel. The aim of this study is to evaluate the effect of respirable suspended particulate matter (RSPM/PM10) on the automated count (WBC, TLC, DLC, ESR) and lipid profile (S. Cholest...

We develop a macroscopic model for mixed urban and freeway traffic networks that is particularly suited for control purposes. In particular, we use an extended version of the METANET traffic flow model to describe the evolution of the traffic flows in the freeway part of the network. For the urban network we propose a new model that is based on the Kashani model. Furthermore, we also describe t...

BACKGROUND Recent studies have shown an association of short-term exposure to fine particulate matter (PM) with transient increases in blood pressure (BP), but it is unclear whether long-term exposure has an effect on arterial BP and hypertension. OBJECTIVES We investigated the cross-sectional association of residential long-term PM exposure with arterial BP and hypertension, taking short-ter...

A ccording to estimations by the World Bank, 350,000 people are killed in automobile accidents in the developing world each year. Two-thirds of these accidents involve pedestrians, most of whom are children, and occur in cities or surrounding areas. As a result of the population surge in urban areas and the rise in vehicle ownership, the figures are still mounting. In fact, road accidents repre...