This study addresses the evaluation of confinement effect in experimental determination compressive strength solid fired clay units. The campaign has focused on two different types bricks, namely mechanically extruded and handmade, with a total amount 458 specimens. research considers standard specimens, such as whole or half brick, 100 × 40 mm3 specimen, nonstandard subjected to bearing surfac...

This paper presents a novel background model for video surveillance—Spatio-Temporal Patch based Background Modeling (STPBM). We use spatio-temporal patches, called bricks, to characterize both the appearance and motion information. Our method is based on the observation that all the background bricks at a given location under all possible lighting conditions lie in a low dimensional background ...

The brick making industry, despite its contribution to environmental pollution, plays a major role in the economic growth of South Africa, with traditional technology accounting for significant proportion total clay production. aim this study is undertake comprehensive description production phases sector Vhembe district and how contributes air pollution. comprised series interviews questionnai...

A study is presented on the use of a non-standard 40 × mm3 specimen for experimental measurement compressive strength solid fired clay bricks extracted from existing masonry buildings. The viability such has been assessed by comparison with results obtained standard 100 specimen. two main advantages. First, it significantly reduces volume sampled material, which can be severely restrained in ar...

We report a small advance on a question raised by Robertson, Schweitzer, andWagon in [RSW02]. They constructed a genus-13 polyhedron built from bricks without corners, and asked whether every genus-0 such polyhedron must have a corner. A brick is a parallelopiped, and a corner is a brick of degree three or less in the brick graph. We describe a genus-3 polyhedron built from bricks with no corne...

10. Dirichlet characters and Dirichlet L-functions Definition 10.1. Let m ∈ N. A Dirichlet character modulo m is a function χ : N→ C that satisfies the following three conditions. (1) χ is periodic with period m, i.e. if a ≡ b (mod m) then χ(a) = χ(b). (2) χ is completely multiplicative, i.e. χ(ab) = χ(a)χ(b) for all a, b ∈ N. (3) χ(a) = 0 if and only if gcd(a,m) > 1. For m ∈ N we let (Z/mZ)× d...

An Euler brick is a cuboid with integer side dimensions such that the face diagonals are integers. Already in 1740, families of Euler bricks have been found. Euler himself constructed more families. If the space diagonal of an Euler brick is an integer too, an Euler brick is called a perfect Euler brick. Nobody has found one. There might be none. Nevertheless, it is an entertaining sport to go ...

The work presents a practical investigation on the degree of efflorescence on different types of bricks available in Bangladesh. A relationship between the type of brick and degree of efflorescence is observed. The study is performed on five different types of samples. For this purpose the general procedure for a brick production is followed by making two samples of customized brick from two di...