Ontologias O3F: um servidor e um editor CO3L

Esta dissertação debruça-se sobre o modelo O3F e a linguagem CO3L, sobre a construção de um servidor de ontologias O3F e ainda sobre a construção de um editor especializado na linguagem CO3L. Analisaram-se criticamente várias abordagens de representação de ontologias: Ontolingua, OWL, OWL2, UML e O3F/CO3L. Foram também analisadas ferramentas que dão suporte às anteriores linguagens, dando especial ênfase ao Protégé e ao Ontolingua Server. Desta análise resultou que o modelo O3F é uma excelente opção para representar ontologias devido às várias vantagens que apresenta em relação às restantes abordagens. O modelo O3F é o único que permite modular um domínio de acordo com uma visão orientada a objectos ou com uma visão relacional do mundo, possibilitando ainda a integração de ambas. A presente dissertação contribuiu com várias propostas de melhoria para modelo O3F e para linguagem CO3L, aumentando a sua expressividade e competitividade. Para possibilitar a real utilização deste modelo e linguagem foi criado o O3 Server, um servidor de ontologias que guarda e partilha as ontologias O3F a um nível global. A presente dissertação criou ainda o CO3L Edit, o primeiro editor especializado na linguagem CO3L que interage com o O3 Server para armazenar e extrair ontologias. Os resultados produzidos na dissertação foram submetidos a avaliação que revelou evidência da correcção e abrangência das ferramentas computacionais, mostrando ainda a satisfação insofismável dos inquiridos com uma taxa de satisfação média de 92,5%. Os sistemas computacionais estão publicamente acessíveis em http://dcti.iscte.pt/O3F/.This dissertation focuses on the O3F model and the CO3L language, on building an O3F ontology server and on the construction of a specialized CO3L language editor. Some ontology representation approaches have been reviewed and analyzed: Ontolingua, OWL, OWL2, UML e O3F/CO3L. We also analyzed computational tools supporting those approaches, in particular and in more detail, Protégé and the Ontolingua Server. This analysis showed that the O3F model is an excellent option for ontology representation due to several advantages that this model offers compared to other approaches. The O3F model is the only one that allows modeling a given domain, following an object-oriented paradigm or a functional and relational paradigm, allowing the integration of both. This work has contributed with several proposals to improve the O3F model and the CO3L language, improving their expressiveness, thus making them more competitive. To enable the use of this model and language we have created O3 Server, a server that stores and shares ontologies globally. We have also developed CO3L Edit, the first CO3L language specialized editor that interacts with the O3 Server to store and extract ontologies. The results produced in this dissertation were evaluated and revealed evidence of the correctness and completeness of software tools and showed the unmistakable satisfaction of users with an average satisfaction rate of 92.5%. The computer systems are publicly accessible at http://dcti.iscte.pt/O3F/

Tourism Master Plan For The Island Of Santiago, Cape Verde : 2020–2030 – Part 2

Cape Verde, a small insular development economy (SIDS), has been confronted and faces various economic, social and environmental constraints throughout its history that have been conditioning its growth strategy. In recent years, tourism has been growing and consolidating an important contribution to economic development, which is observable in the evolution of the number of nights spent in the country, revenue, number of guests, employment generation, and incentive to exports, among others. The gross added value of tourism currently has a weight that is already more than 20% of its GDP (excluding the COVID-19 pandemic period). Aware of this potential, the government created conditions for a greater use of its effects as a mobilizing factor in the economy, as reflected in various official supporting documents and strategic orientations, such as the Strategic Plan for Sustainable Development, and the Main Options of the Strategic Plan for Sustainable Development for the Tourism Activity. The Government decided that each island or region should develop its own strategic tourism plan (Masterplan). This paper proposes several main strategic reflections about the Tourism Master Plan for the Island of Santiago in order to improve its competitiveness.info:eu-repo/semantics/publishedVersio

Tourism Master Plan For The Island Of Santiago, Cape Verde : 2020–2030 – Part 1

Cape Verde, a small insular development economy (SIDS), has been confronted and faces various economic, social and environmental constraints throughout its history that have been conditioning its growth strategy. In recent years, tourism has been growing and consolidating an important contribution to economic development, which is observable in the evolution of the number of nights spent in the country, revenue, number of guests, employment generation, and incentive to export among others. The gross added value of tourism currently has a weight that is already more than 20% of its GDP (excluding the COVID-19 pandemic period). Aware of this potential, the Government created conditions for a greater use of its effects as a mobilizing factor in the economy. Accordingly, various official supporting documents and strategic orientations have been approved, such as the Strategic Plan for Sustainable Development and the Main Options of the Strategic Plan for Sustainable Development for the Tourism Activity. It was also decided that each island or region should develop its own strategic tourism plan (Masterplan). This paper integrates the main strategic reflections regarding the Tourism Master Plan for the Island of Santiago. Revenue from tourism on the Island of Santiago, where the capital of Cape Verde is located, has been much less than the values of the main islands with a high volume of tourists – Sal and Boa Vista. However, the potential of Santiago is high, and therefore it is necessary to adopt the correct measures required to transform this potential into reality. Therefore, this paper presents a short, medium and long-term vision, with a proposal for strategic objectives that will constitute the anchor on which all operational strategic and objectives that will translate into specific lines of action will be based. In summary, this document proposes a strategy based on a diversified and differentiated touristic offer from the other islands of the country, which maximises its potential, counteracting regional asymmetries and preserving the historical and intangible heritage, as well as the natural resources, with the aim for the whole population to benefit from the resultant economic development, especially the most disadvantaged.info:eu-repo/semantics/publishedVersio

Livro Verde dos Montados

O Livro Verde dos Montados apresenta diversos objectivos que se interligam: Em primeiro lugar, o Livro Verde pretende reunir e sistematizar, de uma forma simples e acessível ao público, o conhecimento produzido em Portugal pelos investigadores e técnicos de várias instituições de investigação ou de gestão que estudam o Montado. Assume-se como uma oportunidade de caracterizar o sistema tendo em conta as suas várias dimensões, identificando as principais ameaças à sua preservação assim como os caminhos que podem ajudar à sua sustentabilidade. Não sendo um documento científico, baseia-se no conhecimento científico e pretende constituir a base para uma plataforma de organização, tanto dos investigadores como do conhecimento científico actualmente produzido em Portugal sobre o Montado.Em segundo lugar, o Livro Verde deverá contribuir para um entendimento partilhado do que é o Montado, por parte do público, de técnicos e de especialistas, conduzindo a uma classificação mais clara do que pode ser considerado Montado e de quais os tipos distintos de Montados que podem ser identificados. Em terceiro lugar, o Livro Verde estabelece as bases para uma estratégia coordenada de disponibilização de informação sobre o sistema Montado, visando o seu conhecimento, apreciação e valorização pela sociedade portuguesa no seu conjunto. Deste modo, o Livro Verde poderá constituir um instrumento congregador e inspirador para a realização de acções de sensibilização e informação sobre o Montado. Em quarto lugar, pretende-se que o Livro Verde contribua para um maior reconhecimento e valorização do Montado como sistema, a nível do desenho das políticas nacionais por parte dos vários sectores envolvidos.Finalmente, o Livro Verde constituirá um documento parceiro do Livro Verde das Dehesas, produzido em Espanha em 2010, de forma a reforçar o reconhecimento e a devida valorização destes sistemas silvo-pastoris no desenho das estratégias e políticas relevantes pelas instituições europeias. Em suma, os autores pretendem que o Livro Verde dos Montados se afirme como o primeiro passo para uma efectiva definição e implementação de uma estratégia nacional para os Montados

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at root s=13 TeV

A search is presented for new particles produced at the LHC in proton-proton collisions at root s = 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis is based on a data sample corresponding to an integrated luminosity of 101 fb(-1), collected in 2017-2018 with the CMS detector. Machine learning techniques are used to define separate categories for events with narrow jets from initial-state radiation and events with large-radius jets consistent with a hadronic decay of a W or Z boson. A statistical combination is made with an earlier search based on a data sample of 36 fb(-1), collected in 2016. No significant excess of events is observed with respect to the standard model background expectation determined from control samples in data. The results are interpreted in terms of limits on the branching fraction of an invisible decay of the Higgs boson, as well as constraints on simplified models of dark matter, on first-generation scalar leptoquarks decaying to quarks and neutrinos, and on models with large extra dimensions. Several of the new limits, specifically for spin-1 dark matter mediators, pseudoscalar mediators, colored mediators, and leptoquarks, are the most restrictive to date.Peer reviewe

Measurement of b jet shapes in proton-proton collisions at root s=5.02 TeV

We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS detector at the CERN LHC and corresponds to an integrated luminosity of 27.4 pb(-1). To characterize the jet substructure, the differential jet shapes, defined as the normalized transverse momentum distribution of charged hadrons as a function of angular distance from the jet axis, are measured for b jets. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for b jets are compared with results for inclusive jets, as well as with the predictions from the pythia and herwig++ event generators.Peer reviewe

Measurement of the azimuthal anisotropy of Y(1S) and Y(2S) mesons in PbPb collisions at root s(NN)=5.02 TeV

The second-order Fourier coefficients (v(2)) characterizing the azimuthal distributions of Y(1S) and Y(2S) mesons produced in PbPb collisions at root s(NN) = 5.02 TeV are studied. The Y mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7 nb(-1). The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range vertical bar y vertical bar < 2.4, in the transverse momentum interval 0 < pT < 50 GeV/c, and in three centrality ranges of 10-30%, 30-50% and 50-90%. In contrast to the J/psi mesons, the measured v(2) values for the Y mesons are found to be consistent with zero. (C) 2021 The Author(s). Published by Elsevier B.V.Peer reviewe

MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe