نتایج جستجو برای: urban and metropolitan roads

تعداد نتایج: 16867941  

2005
U. Stilla K. Hedman

In this paper, we propose a fusion strategy for extracted roads from multi-aspect SAR images. The fusion strategy extends a system for automatic road extraction from SAR images based on line extraction and explicitly modeled knowledge, which has been developed for single SAR images. Due to the side-looking geometry of SAR, the visibility of roads is often limited by adjacent high trees or build...

2004
Ming Zhong Pawan Lingras

Research for advanced traveler information systems (ATIS) has been focused on urban roads. However, research for short-term traffic prediction on all categories of highways is needed, as highway agencies expect to implement intelligent transportation systems across their jurisdictions. In this study, genetic algorithms were used to design time delay neural network (TDNN) models as well as local...

2014
Qizheng Mao Ganlin Huang Alexander Buyantuev Jianguo Wu Shanghua Luo Keming Ma

Introduction: Urban soils are large pools of carbon, nitrogen, and other elements, supporting plant growth, sustaining biogeochemical cycles, and serving as the foundation for maintaining ecosystem function and services of urban green spaces (UGS). Quantifying urban soil properties is essential for assessing urban ecosystem services and detecting pollution. Characterizing spatial heterogeneity ...

2013
Shuping Zhang Mingli Suo Shenglin Liu Wei Liang

BACKGROUND Although the negative effects of roads on the genetics of animal populations have been extensively reported, the question of whether roads reduce gene flow in volant, urban bird populations has so far not been addressed. In this study, we assess whether highways decreased gene flow and genetic variation in a small passerine bird, the tree sparrow (Passer montanus). METHODOLOGY We a...

One of the risks recognized by relevant authorities is the risk of outsourcing ITS projects. The purpose of this study was to design and explain the pattern of determining the critical success factors in outsourcing large-scale ITS projects in the Ministry of Roads and Urban Development (Road Maintenance and Transportation Organization). This study was performed using qualitative method. The pa...

2015
Jennie Lioris Ramtin Pedarsani Fatma Yildiz Tascikaraoglu Pravin Varaiya

Intersections are the bottlenecks of the urban road system because an intersection’s capacity is only a fraction of the vehicle flows that the roads connecting to the intersection can carry. The saturation flow rate, and hence the capacity, can be doubled if vehicles can cross intersections in platoons rather than one by one as they do today. Platoon formation is enabled by connected vehicle te...

2013
Andrea Ferraz Young

In this study, we simulated the expansion of the São Paulo Metropolitan Area (SPMA)— the largest metropolitan area in Brazil — by the year 2030 using the Dinamica EGO software with data extracted from Landsat TM 7 (orbit point 219 076, resolution 30 × 30 m). Based on the urban area in 2008, we used an urban growth scenario to analyze urban expansion up to 2030. Subsequently, we used ArcGIS to i...

2006
Ruili Wang Mingzhe Liu Ray Kemp Min Zhou

Traffic flow on straight roads is the most common traffic phenomenon in urban road traffic networks. In this paper, a realistic cellular automaton (CA) model is proposed to investigate driver behavior on urban straight roads based on our field observations. Two types of driver behavior, free and car-following, are simulated. Free driving behavior is modeled by a novel five-stage speeding model ...

1990
Takuya Hayakawa Toyohide Watanabe Yuuji Yoshida Kunio Kawaguchi

an urban map, the procedure composes the road-network by searching the roads from each intersection. Next, it In this paper, we propose an experimental method to modifies the road-network by interpreting the original urrecognize roads from an urban map on the basis of the ban map and the network simultaneously with heuristic road-network. The road-network is a conceptual graph knowledges about ...

2011
M. Rajeswari Omkar J. Senthilnath L. Pratap Reddy

To evaluate the speed of growth of an urban area road is one of the fast information updating element during urban development. Road information extraction based on high resolution satellite images play an important role because roads affect city land usage. In this paper, two approaches for road network extraction for an urban are proposed. Most research in road extraction begins with an origi...

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