Distributed Resilient Estimation over Directed Graphs

This paper addresses the problem of estimating an unknown static parameter by a network of sensor nodes in a distributed manner over a directed communication network in the presence of adversaries. We introduce an algorithm, Resilient Estimation through Weight Balancing (REWB), which ensures that all the nodes, both normal and malicious, asymptotically converge to the value to be estimated provided less than half of them are affected by adversaries. We discuss how our REWB algorithm is developed using the concepts of weight balancing of directed graphs, and the consensus+innovations approach for linear estimation. Numerical simulations are presented to show the performance of our algorithm over directed graphs and its resilience to sensor attacks.Comment: 12 pages, 9 figure

A multi-criteria decision-making synthesis method to determine the most effective option for modernising a public building

The study presents a sustainable building modernisation model that uses knowledgebased decision-making methods to general reconstruct old public buildings, intending to achieve the best level of energy use on the design scene. The rapid development and dissemination of standards cause multiple research opportunities in the fields of process automation and adaptation of BIM technologies to the prerequisites of existing buildings. Decision-making was widely supported by imitating structures used in the late stages of design. However, its application is not sufficient at the beginning, which affects design solutions with a significant impact on the performance of the completed building. Construction design is a multifaceted discipline where architects, engineers, contractors, and builders influence design decisions. This modernisation way uses digital systems and simulations to estimate the expected energy consumption of construction faster and economically. BIM and critical characteristics are the basis of the model, where design and general processing needs to follow to pre-built instructions. This solution allows estimating energy demand in reconstructed buildings and correlation of parameters. First published online 25 September 202