In urban areas, main air flows from prevailing winds are strongly modified, depending on constructions’ morphology and urban microclimate’s effects. The meteorological data on the wind speed are often available from outside city centres whereas this wind speed is tough to assess in the urban canopy layer. The meteorological models which are developed from regional level to urban canopy layer le...

A channel model for line-of-sight (LoS) small street microcell in dense urban areas is proposed. The distribution of the scatterers in the channel seen from the receiver (Rx) based on the physical phenomenas is obtained. The coefficients of the distribution function is derived by approximation to a set of urban street microcell measurement data. The powerazimuth spectrum (PAS) for the proposed ...

The economy of street food vendors provides not only affordable food for the urban poor people, but also generates opportunities of self-employment. However, success of these tiny units is dependent on various networks that create this economy. Therefore, economic outcomes from these entrepreneurial activities could be embedded with the social relations through networks. Through an ethnographic...

A stochastic channel model for line-of-sight (LoS) street microcell scenarios in dense urban areas is proposed. The scattering power distribution (SPD) in the channel seen from the mobile terminal (MT) based on the physical phenomenon is obtained. The coefficients of the distribution are derived by approximation to the measurements performed in urban street microcell scenarios. The azimuth-powe...

With the acceleration of urbanization, waterlogging has become an increasingly serious issue. Road waterlogging has a great influence on residents' travel and traffic safety. Thus, evaluation of residents' travel difficulties caused by rainstorm waterlogging disasters is of great significance for their travel safety and emergency shelter needs. This study investigated urban rainstorm waterloggi...

DAVID GALLUP: Efficient 3D Reconstruction of Large-Scale Urban Environments from Street-Level Video (Under the direction of Marc Pollefeys and Jan-Michael Frahm) Recovering the 3-dimensional (3D) structure of a scene from 2-dimensional (2D) images is a fundamental problem in computer vision. This technology has many applications in computer graphics, entertainment, robotics, transportation, man...

Street-parking vehicles in urban areas are causing various traffic problems, however, have been counted manually in the traffic census, including counting error. We propose two auto-detection methods; one is based on an epipolar-plane image analysis, using a line-scan camera, and the other is based on three-dimensional restoration, using a scanning laser range sensor. Both methods achieve high ...