We calculate the entropies of the system of classical particles and a quantum scalar field by using the brick wall method in thermal bath in a charged Kerr black hole spacetime. Their leading terms at Hartle-Hawking temperature TH = κ/(2π) are given by Scl ≈ N ln ( Ab ǫ ) , and S ≈ N ′AH ǫ , where Ab and AH are the area of the box and the horizon respectively. e-mail : [email protected] 1

We calculate the entropies of the system of classical particles and a quantum scalar eld by using the brick wall method in thermal bath in a charged Kerr black hole spacetime. Their leading terms at Hartle-Hawking temperature TH = =(2 ) are given by Scl N ln Ab 2 , and S N 0 AH 2 , where Ab and AH are the area of the box and the horizon respectively. e-mail : [email protected]

Many old buildings have unsatisfactory thermal performance compared to the standards of today. One way to increase the thermal performance is to add thermal insulation to the building envelope. However, many old buildings are listed and considered to be valuable for historical and esthetic reasons. This often limits the position and thickness of the additional insulation layer. Vacuum insulatio...

Sonar range nders are commonly used in mobile robotics for map building, navigation, and localisation. All robot sonar systems must, implicitly or explicitly, use a model of the sonar sensor. However, no systematic attempt has been made to experimentally model the behaviour and reliability of sonar range returns. This paper describes an empirical model of sonar time-ofight, derived from a large...

Abstract Mortar-less construction with interlocking bricks has many advantages, such as improved efficiency and relatively low requirements on labour skills. Nevertheless, the seismic performance of brick structures is not well understood yet. In this paper, laboratory tests numerical modelling are carried out to investigate behaviour walls. Laboratory shaking table performed a scaled reinforce...

Abstract Canada employs a prescriptive-based code for residential buildings. The minimum requirements as prescribed in the 2015 National Building Code were developed based on historical climate which was assumed static. It is now evident that changing and it anticipated wind-driven rain events will be more frequent, of longer duration increased intensity. These changes may affect durability wal...