A Contribution To The Assessment Of Apparent Losses In Water Usage

Transmissão através de Videoconferência

Por Maria do Rosário Ramos (Universidade Aberta e CMAFcIO).

The management of non-revenue water (NRW) is one key issue for improving water use efficiency, reducing gaps between water supply and demand.
One of the components of NRW are apparent (commercial) losses, water volumes taken from the network and consumed but not accounted. They are often related to water meter malfunction like under-registration, which is difficult to detect and quantify.
This study was motivated by the challenge proposed by Infraquinta, in the 140th European Study Group with Industry (ESGI140), held in Portugal in June 2018.
The aim was to develop a strategy supported by statistical methods to detect an anomalous decrease in water usage patterns, contributing to meter performance assessment. The basis of the approach is a combination of methods to analyse billed water consumption time series. In the first place, the series is decomposed using Seasonal-Trend decomposition based on Loess. Next, breakpoint analysis is performed on the seasonally adjusted time series. We search for decreasing changes in the periods defined by breakpoints through Mann-Kendall test and Sen’s slope estimator, and an indicator for this change is presented. The strategy is applied to data on water consumption from the Algarve, Portugal.


CEAUL - Centro de Estatística e Aplicações da Universidade de Lisboa / CEMAT-Ciências - Centro de Matemática Computacional e Estocástica

The objective of this course is to introduce participants to the details of communication and writing scientific publications.

Titulo da iniciativa inserido em fotografia da Ponte sobre o Tejo

A iniciativa, a decorrer de 25 a 31 de outubro, inclui atividades em Ciências ULisboa.

Seminário de Lógica Matemática, por Bruno Jacinto (Universidade de Lisboa).

Seminário Permanente de Filosofia das Ciências, por Anna Ciaunica (CFCUL/GI2).

Seminário de Formação Avançada em Jardins, Paisagens e Ambiente, por Daniela Araújo e Mauro Nascimento (Museu de Lisboa | EGEAC).

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A iniciativa conta com o apoio do Centro Interuniversitário de História das Ciências e da Tecnologia.

Seminário conjunto do Centro de Estatística e Aplicações da Universidade de Lisboa e do Centro de Matemática Computacional e Estocástica, por Kristen Campbell (University of Colorado Anschutz Medical Campus, USA).

Research at the Faculty of Sciences

Participation is free but prior registration is suggested.

Hi-Phi Seminar, por Nathalie Gontier (Ciências ULisboa, CFCUL) e Luís Tirapicos (Ciências ULisboa, CIUCHT).

Encontro Scientia, por Rui A. P. Perdigão (EChanges - Chair Professor and Head of the Met Institute for Complex System Science, Vienna, Austria / NORA Climate Dynamics and Complexity Chair, Vienna, Austria & Princeton NJ USA / CCIAM coordinator at cE3c, Lisboa, Portugal).

Geometry Webinar, por Giosuè Muratore (CMAFcIO).

Conversa com Galopim de Carvalho.

Logótipo da IAESTE, sobre uma fotografia da cidade de Edimburgo

Candidaturas online de 01 a 31 de outubro 2021.

Imagem alusiva ao Concerto e Conferência

Concerto e conferência pela Orquestra Metropolitana de Lisboa.

Encontro Scientia, por Maria Amélia Martins Loução (PSE - cE3c).

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Um programa de aceleração de ideias e negócios, promovido pela redeSaúde, com candidaturas até 15 de outubro de 2021.

Conversa com Galopim de Carvalho.

The objective of this course is to introduce participants to the details of communicating science to non-specialized audiences, including, but not exclusive to, public and private stakeholders, students and teachers, and media professionals.

Conversa com Galopim de Carvalho.

The course aims at providing an introduction to stable isotopes ratios as tools to understand global, ecosystem and community level bio/geo cycles; light isotopes: H, N, C, O and S isotopes, geo cycles and ecological significance; sampling and analytical methodologies in stable isotope analysis.

This course aims to evidence the importance of natural history collections for the study of biodiversity, to show new tools and approaches to extract and disseminate biodiversity data from natural history collections and to increase awareness of young researchers for the scientific and cultural value of Natural History Museums.

Conversa com Galopim de Carvalho.

EvoS aims at turning evolutionary theory into a common language to areas that pertain to the natural world, including human affairs.

Conversa com Galopim de Carvalho.

Fotografia de plantas

Pre-proposals submission until 30 November 2021, 15:00 CET(local time in Brussels).