Dragan S. Djordjevic

The transition towards a circular economy in the built environment requires effective benchmarking frameworks to evaluate and compare circularity performance of buildings. However, existing benchmarking systems for assessing circularity performance in buildings remain underdeveloped. This paper presents a brief literature review on benchmarking circularity of buildings across European countries at two different levels: (1) building materials and products, and (2) buildings and the built environment. The review identifies key gaps and challenges and highlights the need for harmonized and comprehensive benchmarking approaches, based on robust and interoperable datasets, to support informed decision-making in circular construction.

In this paper we introduce the generalized inverse of complex square matrix with respect to other matrix having same size. Some of its representations, properties and characterizations are obtained. Also some new representation matrices of W-weighted BT-inverse and W-weighted core-EP inverse are determined as well as characterizations of generalized inverses A?, A?,W, A?, A?,W.

Consider the existence of limits lim n ->infinity complex Banach algebra with the unit, and q is an integer, q >= 2. aqn and lim n ->infinity aqn, where a is an arbitrary element of a

Lagenaria vulgaris shell is composed of lignocellulosic material with the ability to bind metal cations due to hydroxyl, carboxylic, lactonic, and phenolic groups present in its structure. To introduce a greater amount of sulphonic groups characterized by significant ion-exchanging capacity, oxidation, and successive sulfonation were performed. The efficiency of biosorbent based on chemically modified Lagenaria vulgaris shell for Cu(II) ion removal from aqueous solution was studied in batch conditions on various initial pHs. Results showed that removal efficiency (95%) did not change in the pH range from 2.0 to 5.0.

We investigate perturbations of the Moore–Penrose inverse and forward order law for the Moore–Penrose inverse in rings with involution, and thus we extend some results of Castro–Gonzalez and Hartwig to more general settings.