Automatic extraction of buildings from digital images aims at detection of buildings from digital images and reconstruction of roof structure automatically. At Pictometry, more than 30 million images are captured every year and how to extract the useful information of objects on the ground from the existing image library for various applications is a big challenge we face now. In this paper, an...

This work focuses on daylighting performance analysis and its energy savings potential for residential building by using dynamic simulation experimental validation. The thermal of nano material comparison with conventional has also been analyzed. daylight factor was found in between 1 11% 1–21% the floor wall, which is within comfort limit. theoretical model results are compared values. best or...

Numerous studies have identified the roof plate as an important signaling center controlling dorsal interneuron specification and differentiation in the developing spinal cord. Currently, the molecular pathways of roof plate formation and function are poorly understood. We determined that the LIM-homeodomain transcription factor Lmx1b is sufficient to induce functional roof plate in the early c...

objective: the objective of this study was to determine the relationship between religious orientation (intrinsic–external) and cognitive distortions. methods: general design of this study considered as a descriptive and correlational method. universal population in this research consist all students of the urmia azad university, which were studying during 2012 and 2013 (n = 250). all responden...

This article presents an overview of results from the 1980–1992 survey of snow loads and densities on roofs in deep snow areas of British Columbia with particular emphasis on results from an extensive survey at the ski village on Mt. Washington, Vancouver Island, where the 30-year return ground snow load is 21 kPa. The article makes recommendations for the design of buildings in deep snow areas...

This paper is addressed to an approach for segmenting airborne laser scanning point cloud. It aims to detect and cluster point cloud of an input roof into several segments that are corresponding to plane patches of the roof. The algorithm is developed based on the assumption that every non-flat roof can be decomposed into a set of gabled and/or hipped roof. The process detects roof ridges at fi...

This paper presents a new approach for roof facet segmentation based on ridge detection and hierarchical decomposition along ridges. The proposed approach exploits the fact that every roof can be composed of a set of gabled roofs and single facets which are separated by the gabled roofs. In this work, firstly, building footprints stored in OpenStreetMap are used to extract 3D points on roofs. T...

One of the main concerns of an underground coal mining engineer is the safety and stability of the mine. One way that the safety and stability can be ensured is to know and understand the coal mine geology and how it reacts to the mining process. One technique that has shown a lot of success in the coal mining industry for geologic technical evaluation purposes is the coal mine roof rating (CMR...