The sources of aggregate productivity growth are explored using detailed data for four-digit U.S. manufacturing industries during 1958-96 and a decomposition formula which allows to quantify the contribution of structural change. Labor productivity as well as total factor productivity are considered and the aggregation is performed with either value-added or employment shares. It is shown that ...

Most of the Italian historical centers are composed unreinforced masonry (URM) buildings arranged in aggregate configurations. Past and recent seismic events have underlined high vulnerability these especially towards out-of-plane mechanisms. In order to reduce their vulnerability, use strengthening interventions based on fiber reinforced composite materials has become widespread last years. Mo...

" …the price of electricity was found to be a significant determinant of electricity demand in most cases with the expected inverse relationship (higher prices mean less consumption).The results provided no evidence that the responsiveness of Ontario industrial demand to the price of electricity during time periods when demand is the strongest has strengthened since market opening except, perha...

The aggregation and breakup of particle flocs were investigated by monitoring the size distribution of a suspension of aggregates, with diameter d(o), under shear flow created by two mixing systems. The aggregation behavior was studied in 63 experiments under various conditions of induced shear rate and particle volume concentration for particle aggregates smaller than the Kolmogorov scale. Des...

Abstract The accumulation of construction and demolition waste is one the major problems in modern construction. Hence, this research investigates use brick concrete. Seven different concrete mixes were investigated study: a control mix, three with volumetric replacement (10, 20, 30)% natural aggregate aggregate, two addition nano powder at percentage level 5– 10% by weight cementitious materia...

The radiopaque dicalcium silicate cement (RDSC) displayed a shortened setting time and good biocompatibility. This study aimed to compare the regenerative potential of RDSC and white-colored mineral trioxide aggregate (WMTA) using a rabbit femur model. The animals were sacrificed at one, three and six months to accomplish histological and biochemical analyses. The results indicated that after o...

Copper slag, a by-product of the pyrometallurgical process used for obtaining copper from ore in Bor, Serbia, contains mainly silicon, iron, calcium, and aluminium oxides. Due to such properties, it is disposed landfills. Despite favourable technical properties slag aggregates possess, as low-water absorption (WA24 0.6%), low resistance fragmentation (LA 10%), wear (MDE 4%), its use constructio...