Ž . This study employed an airborne laser scanner to detect changes of buildings by acquiring a digital surface model DSM data of urban areas. Simple comparison between DSM data sets acquired at different occasions successfully detected building changes without omission errors. A CCD array image simultaneously acquired with the DSM data was also automatically orthorectified with the DSM data an...

The overall aim of our research is to eventually develop a viable system, using pinus radiata, for multi-storey timber buildings up to 6 storeys. One of the main issues is achieving sound resistant timber floors that are economically viable. This paper reports on the acoustic testing of a prototype floor, with radiata pole joists. Measurements were made of the objective performance. The results...

Radon is a naturally occurring radioactive gas produced from the decay of uranium in the earth’s crust. Its presence is ubiquitous at the earth’s surface even though its production, and consequently its concentration, are not uniform. Radon can infiltrate into buildings basically through cracks and other routes of entry in the basement. Also, since it is heavier than air, it tends to concentrat...

We present a method for a structural simulation of destructible 3-dimensional metal frame buildings at interactive frame rates. Beams, floor slabs, and wall sections are simulated as rigid bodies and joined together by rigid constraints. Each constraint is given a set of breaking thresholds for the force and torque around each axis, allowing them to fail if the structure is overloaded or damage...

This paper describes an approach to building extraction using Digital Surface Models (DSM) as input data. The approach consists of building detection and reconstruction using parametric and prismatic building models. The main focus is on the extraction of roof structures, an extension of the previously published work, as first step towards the extraction of polyhedral building descriptions in o...

We give an elementary construction of polyhedra whose links are connected bipartite graphs, which are not necessarily isomorphic pairwise. We show, that the fundamental groups of some of our polyhedra contain surface groups. In particular, we construct polyhedra whose links are generalized m-gons. The polyhedra of this type are interesting because of their universal coverings, which are two-dim...

A method I' describS ror reconstructing decorative images concealed b livers of overcostings. The method employs • 'louparametric multivariate algorithm and. cellular—automaton construct to convert the nearinfrareil spectrum of a surisce into digit.l images of the surface Iaers. The technique h potentiall> applicable to the restoration of historic buildings "here aging previous restoration atte...

The natural convection flow over a surface embedded in saturated porous media is encountered in many engineering problems such as the design of pebble-bed nuclear reactors, ceramic processing, crude oil drilling, geothermal energy conversion, use of fibrous material in the thermal insulation of buildings, catalytic reactors and compact heat exchangers, heat transfer from storage of agricultural...

The robot automates the operation painting on exterior walls of high-rise buildings. The robot is designed to ensure safety during work at high elevations, assure the quality of the coating, enhances efficiency and maintain the privacy of guests in the building. At the Shinjuku Center Building (54 above-ground storeys, 220 m in height, 100,000 m' of coating) one of Tokyo's high-rise buildings, ...