Individual Growth Models in a Random Environment - an Application to Cattle Growth

Sala 6.4.31, FCUL, Lisboa

Por Patrícia A. Filipe (CIMA, IIFA - Universidade Évora / Depart. Matemática-Escola Ciências e Tecnologia, Universidade Évora).

The stochastic differential equations (SDE) models are adequate to describe the behavior of  dynamic phenomena permanently influenced by chance, thus constituting a valuable modeling tool in a wide range of applications in various areas. In particular, in the context of modeling the individual growth of organisms (animals or plants) it can model the growth of an organism in an environment subject to random fluctuations that affect the individual growth rate. In this seminar, it will be presented a class of SDE models developed to describe individual growth in a random environment, whose results were applied to the weight of Mertolengo cattle, an autochthonous breed with high representation in the Alentejo region. The topics of estimation and forecasting will be addressed. We characterize the time it takes to an animal reach a certain weight. When this is a weight of economic interest, we can highlight the importance of these results and, in this context, expected profit optimization issues will be approached.

Joint work with Carlos A. Braumann member of the Centro de Investigação em Matemática e Aplicações (UID/MAT/04674/2013).

CEAUL - Centro de Estatística e Aplicações da Universidade de Lisboa

Seminário de Tese no âmbito do Doutoramento em Biologia e Ecologia das Alterações Globais.

Colóquio de Matemática, por Carlos André (Departamento de Matemática | Ciências ULisboa e CEAFEL-Ciências - Centro de Análise Funcional, Estruturas Lineares e Aplicações).

Logótipo do evento, sobre um fundo branco

Understanding plant water relations at several scales under climate change is the theme of the XV Portuguese-Spanish Water relations Symposium: “Water relations under climate change: from genes to ecosystem”.

Seminário Helena Avelar de Astronomia e Astrologia Antiga, por Martin Gansten (Lund University e Umeå University).

Logótipos ERC e EIC

A sessão visa apresentar os programas ERC e EIC e as potenciais sinergias que podem ser estabelecidas entre ambos.

Fotografia de candidatos, acompanhada do título "M23 2022|2023"

A ULisboa promove o Dia Aberto M23, um evento que pretende aproximar o público adulto do meio universitário.

In this course, we promote a multidisciplinary approach presenting the most recent findings on the topic and challenging the traditional way of considering symbiotic associations as exceptions and not as the rule.

The goal of this course is to provide to the participants with current and practical knowledge on urban ecology, including ecological and social aspects.

Neste encontro, vamos descobrir as potencialidades da utilização do Jamboard - um quadro branco digital gratuito da Google - em trabalhos colaborativos.

Nesta formação, aprenderemos a criar apresentações dentro do Mentimeter, a criar diferentes tipos de slides e a selecionar as configurações mais adequadas aos objetivos pedagógicos.

Nesta formação, iremos abordar as diferentes etapas do processo de planificação de unidades curriculares e refletir conjuntamente em boas práticas sustentadas pela investigação.

Fotografia de placa de identificação de zona de plantação de vinha

Candidaturas até 28 de fevereiro de 2022.

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O evento pretende juntar técnicos, investigadores, estudantes, produtores, industriais e demais agentes da fileira, contribuindo para a atualização de dados sobre o setor e a partilha de conhecimentos sobre as potencialidades da flora portuguesa, para além, das condições edafoclimáticas nacionais que potenciam produtos de elevada qualidade.

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Scientists, as the main actors in the production of scientific knowledge, have the responsibility of having an active voice in communicating this knowledge – and that can be achieved for example by a conscious use of the communication tools at their disposal and a better articulation with journalists, among other means.

This course aims at providing students with basic knowledge of R programming, allowing them to manipulate and visualize data with R.

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The course provides essential skills and knowledge that enable the participants to develop climate change adaptation strategies.

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This is a mostly practical course offering an overview on different community ecology and macroecological methods and software. These will include all steps of a research project, from the optimal sampling of communities to process inference from large-scale patterns of taxon, phylogenetic and functional diversity.

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The course aims at enabling the participants to use different methods to measure the impacts of pollutants on ecosystems. Basic knowledge will be provided through theoretical and practical lessons on how to select and use the most suitable metrics based on the analysis of multiple compartments of the ecosystems.

This course offers an overview of the different ways to measure biodiversity, and provides tips for the stratification of primary biodiversity data and the construction of variables that describe its various facets. It also includes an in-depth review of the different types of data used to measure biodiversity and their problems and limitations.