Centrality has revealed crucial for understanding the structural properties of complex relational networks. Centrality is also relevant for various spatial factors affecting human life and behaviors in cities. Here, we present a comprehensive study of centrality distributions over geographic networks of urban streets. Five different measures of centrality, namely degree, closeness, betweenness,...

O of the most successful transportation systems management (TSM) actions in recent years has been the priority treatment of high-occupancy vehicles (HOVS), The priority treatments typically have been either the provision of dedicated through-travel lanes or queue bypass lanes at roadway capacity restrictions. Through the use of priority measures, HOVS (buses, vanpools and carpools) are given tw...

Flooding in urban areas is an inevitable problem for many cities in Asia. In Bangladesh, Dhaka has serious problems related to urban flooding. The situation was highlighted in September 1996 when residences experienced ankle to kneedeep water on the streets. Daily activities in parts of the city were nearly paralyzed and heavy traffic jams occurred due to stagnant water on the streets. The stud...

Articles you may be interested in A self-consistent model for the saturation dynamics of the vortex shedding around the mean flow in the unstable cylinder wake Study of the long-time dynamics of a viscous vortex sheet with a fully adaptive nonstiff method We develop a model to numerically study the dynamics of vortex streets in channel flows. Previous work has studied the vortex wakes of specif...

Deterministic equilibrium flows in transport networks can be investigated by means of Markov's processes defined on the dual graph representations of the network. Sustained movement patterns are generated by a subset of automorphisms of the graph spanning the spatial network of a city naturally interpreted as random walks. Random walks assign absolute scores to all nodes of a graph and embed sp...

The location of the author of a social media message is not invariably the same as the location that the author writes about in the message. In applications that mine these messages for information such as tracking news, political events or responding to disasters, it is the geographic content of the message rather than the location of the author that is important. To this end, we present a met...

The huge amount of electrical power of many countries is consumed in lighting the streets. However, vehicles pass with very low rate in specific periods of time and parts of the streets are not occupied by vehicles over time. In this paper, we propose a system that automatically switches off the light for the parts of the streets having no vehicles and turns on the light for these parts once th...

OBJECTIVES To determine the prevalence and nature of occupational injuries among children working in the streets of four major cities in Latin America, as well as to identify factors that predict these work-related injuries. METHODS This cross-sectional study interviewed 584 children from 5-17 years of age working on the streets of Bogotá, Colombia; Lima, Peru; Quito, Ecuador; and São Paulo, ...

Since the start of the Ž nancial crisis in late 1997, there has been a signiŽ cant increase in the numbers of children living and working on the streets of Indonesia, including a dramatic rise in street girls. All street children are marginalised by the state and mainstream society, and this is re ected in the marginality of the spaces they occupy in the streets. In Indonesia, street children ...

In this paper a bimodal discrete urban road network design problem with bus and car modes is investigated. The problem consists of decision making for lane addition to the existing streets, new street constructions, converting some two-way streets to one-way streets, lane allocation for two-way streets, and the allocation of some street lanes for exclusive bus lanes. Two objectives are consider...