847 results
Search Results
2. Predicting People's Concentration and Movements in a Smart City.
- Author
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Ferreira, Joao C., Francisco, Bruno, Elvas, Luis, Nunes, Miguel, and Afonso, Jose A.
- Subjects
SMART cities ,URBAN planning ,CITIES & towns ,CELL phones ,PREDICTION models - Abstract
With the rapid growth of urbanization and the proliferation of mobile phone usage, smart city initiatives have gained momentum in leveraging data-driven insights to enhance urban planning and resource allocation. This paper proposes a novel approach for predicting people's concentration and movements within a smart city environment using mobile phone data provided by telecommunication operators. By harnessing the vast amount of anonymized and aggregated mobile phone data, we present a predictive framework that offers valuable insights into urban dynamics. The methodology involves collecting and processing location-based data obtained from telecommunication operators. Using machine learning techniques, including clustering and spatiotemporal analysis, we developed models to identify patterns in people's movements and concentration across various city regions. Our proposed approach considers factors such as time of day, day of the week, and special events to capture the intricate dynamics of urban activities. The predictive models presented in this paper demonstrate the ability to predict areas of high concentration of people, such as commercial districts during peak hours, as well as the people flow during the time. These insights have significant implications for urban planning, traffic management, and resource allocation. Our approach respects user privacy by working with aggregated and anonymized data, ensuring compliance with privacy regulations and ethical considerations. The proposed models were evaluated using real-world mobile phone data collected from a smart city environment in Lisbon, Portugal. The experimental results demonstrate the accuracy and effectiveness of our approach in predicting people's movements and concentration. This paper contributes to the growing field of smart city research by providing a data-driven solution for enhancing urban planning and resource allocation strategies. As cities continue to evolve, leveraging mobile phone data from telecommunication operators can lead to more efficient and sustainable urban environments. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Homogenization of Portuguese long-term temperature data series: Lisbon, Coimbra and Porto.
- Author
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Morozova, A. L. and Valente, M. A.
- Subjects
CLIMATE research ,TEMPERATURE measurements ,ASYMPTOTIC homogenization ,METADATA - Abstract
The article presents a study which investigates the homogenization of long-term temperature data series in Porto, Lisbon, and Coimbra, Portugal. The study used metadata, a visual analysis, and homogeneity tests. Results show that all the data series have both internal climatic and non-climatic origins.
- Published
- 2012
- Full Text
- View/download PDF
4. Czech Grey Literature and Research Outputs: Transformation of the NUŠL Service.
- Author
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Černohlávková, Petra and Vyčítalová, Hana
- Subjects
GREY literature ,INSTITUTIONAL repositories ,NATIONAL libraries - Abstract
The Czech National Repository of Grey Literature (NUŠL) has been bringing GL to science and society over 10 years. It is based on Lisbon definition from 1997, updated in 2004, and on its own document typology that was created in 2008 as one of the outputs of the same name project. Since then there have been several papers and articles calling for new definition and new typology, asking what should be still considered GL and what not anymore. (Savić, 2018; Baxter and Hilbrecht, 2020) Savić (2019) pointed out that if everything can be marked as GL then probably nothing is GL. The NUŠL already had to change its typology few times to provide still good service and to reflect research institutions' needs. However, it is not only the document typology that influences the repository and the service, there are other circumstances which affect further development of the NUŠL such as partner institutions' needs, the National Research, Development and Innovation Policy, European Commission's guidelines on research outputs, current quantity and quality of other repositories and systems for grey literature and research results in the Czech Republic etc. The contribution/paper will bring a brief overview on NUŠL's experience over 10 years of providing the service. Then it will be focused on a current situation in research area of the Czech Republic in detail. Finally, out of these points will conclude to the necessary changes that has to be taken by NUŠL and his provider - National Library of Technology in Prague, in order to keep the service meaningful. [ABSTRACT FROM AUTHOR]
- Published
- 2023
5. Probabilistic Seismic Hazard Assessment of Lisbon (Portugal).
- Author
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Gögen, Büşra, Karimzadeh, Shaghayegh, and Lourenço, Paulo B.
- Subjects
EARTHQUAKE hazard analysis ,EARTHQUAKE damage ,TSUNAMIS ,GROUND motion - Abstract
The 1755 Lisbon earthquake holds significant historical importance in Portuguese history. The subsequent tsunami resulted in extensive destruction and damage, affecting not only Lisbon but also other regions of Portugal, Spain, and North Africa. This significant and hazardous event led to an increase in awareness about earthquake and tsunami risks, not only within Portugal but throughout Europe. This heightened awareness facilitated advancements in scientific developments, including design codes, standards, and earthquake engineering. However, recent studies focusing on hazard assessment for Lisbon are limited. For this reason, this paper aims to present a comprehensive probabilistic seismic hazard analysis (PSHA) for the Lisbon metropolitan area. The first stage of PSHA involves defining applicable and active seismic source models (area and line sources) within the study area. Subsequently, historical and instrumental earthquake records are collected to build a homogenized earthquake catalog, utilizing both global and local earthquake databases. Following this, the completeness level of the earthquake catalog is tested. By incorporating suitable ground motion models to the region and local soil characteristics, seismic hazard maps for various return periods and hazard curves in terms of peak ground acceleration (PGA) are developed. The findings based on the area source model agree with existing literature, indicating PGA values ranging from 0.3 g to 0.9 g, 0.2 g to 0.7 g, 0.2 g to 0.5 g, and 0.1 g to 0.3 g for return periods of 2475, 975, 475, and 50 years, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Centenary paper: European spatial planning: past, present and future.
- Author
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Faludi, Andreas
- Subjects
STRATEGIC planning ,INTERNATIONAL obligations ,MONETARY unions ,INTERNATIONAL relations ,SPATIAL ability - Abstract
During the launch era of the European Union, there were unsuccessful attempts to make spatial planning part of the European project. This paper identifies three subsequent phases of integration. During the doldrums era, initiatives were channelled through the Council of Europe. Since the start of the boom era, spatial planning has been related to EU cohesion policy. As we move into the fourth phase, characterised by doubts about integration, what does the future bring? The Lisbon Treaty settles the issue of a lack of competence, but uncertainty continues because the future of cohesion policy as such is unsettled. While the journey continues, will it be retained, and if so, what will the role of territorial cohesion policy be? Will territorial cohesion policy be barely tolerated, or will it become a mainstay of cohesion policy? [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
7. Innovative Approach to Promoting Walkability in Lisbon.
- Author
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Ribeiro, Jorge T., Vieira, Alexandra R., Rosado, Susana, and Serdoura, Francisco
- Subjects
WALKABILITY ,CITIES & towns ,SUSTAINABLE communities ,SUSTAINABLE urban development ,HISTORIC districts ,PUBLIC spaces - Abstract
The increases in both the elderly population and urbanization present new problems for planning new cities and managing old cities. To solve this challenge, innovative ideas/proposals that encourage walkability and reduce fossil energy motor transport are needed, in line with the actions advocated by Sustainable Development Goal #11 (SDG11), Sustainable Cities and Communities. Opening passages that cross blocks, creating connections between the streets, is the proposal discussed in this paper, as seen in cities like Paris, Prague, Milan, and Juíz de Fora, which have passages in their urban fabric. These can be implemented in a building's rehabilitation or when a new building replaces it. New architectural project designs should have several characteristics that promote walkability in the city, including passages and galleries. Although previous research has obtained promising results, extending the research to different urban fabrics and block sizes is needed. Using space syntax and data analysis, we simulated and quantitatively assessed the walkability of three neighborhoods in Lisbon, Portugal. The comparison of all simulations and the discussion of the results show that the passages improve walkability. It is also noticeable that there is higher walkability in orthogonal urban fabrics than in non-orthogonal fabrics. The results for block size are inconclusive. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
8. Modern Muralists in the Spotlight: Technical and Material Characteristics of the 1946–1949 Mural Paintings by Almada Negreiros in Lisbon (Part1).
- Author
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Gil, Milene, Cardoso, Inês, Costa, Mafalda, and Frade, José C.
- Subjects
MURAL art ,MICROSCOPY ,SCANNING electron microscopy ,FOURIER transforms - Abstract
This paper presents the first insight into how Almada Negreiros, a key artist of the first generation of modernism in Portugal, created his mural painting masterpiece in the maritime station of Rocha do Conde de Óbidos in Lisbon. This set of six monumental mural paintings dates from 1946 to 1949 and is considered Almada's artistic epitome. As part of the ALMADA project: Unveiling the mural painting art of Almada Negreiros, the murals are being analyzed from a technical and material perspective to understand his modus operandi and the material used. This is the first study of this nature carried out on site and in the laboratory using standard and more advanced imaging, non-invasive analysis, and microanalysis techniques. This article reports the results obtained with visual examination, technical photography in visible (Vis), visible raking (Vis-Rak), complemented by 2D and 3D optical microscopy (OM), scanning electron microscopy with energy-dispersive spectrometry (SEM-EDS), and Fourier transform infrared micro-spectroscopy (µ-FTIR) of the paint layers. The results show the similarities, differences, and technical difficulties that the painter may have had when working on the first, third, and presumably last mural to be painted. Vis-Rak light images were particularly useful in providing a clear idea of how the work progressed from top to bottom through large sections of plaster made with lime mortars. It also revealed an innovative pounced technique used by Almada Negreiros to transfer the drawings in full scale to the walls. Other technical characteristics highlighted by the analytical setup are the use of textured, opaque, and transparent paint layers. The structure of the paintings does not follow a rigid build-up from light to dark, showing that the artist freely adapted according to the motif represented. As far as the colour palette is concerned, Almada masterfully uses primary and complementary colours made with Fe-based pigments and with synthetic ultramarine blue, cadmium pigments, and emerald green. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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9. Announcement: Award-winning papers in 2004.
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AWARDS ,PERIODICALS ,MUNICIPAL engineering - Abstract
The article announces awards given to the best papers published in "Municipal Engineer," on 2004. The Parkman Medal, presented for the best paper on management, was awarded to L. Picado-Santos, A. Ferreira, A. Antunes, C. Carvalheira, B. Santos, M. Bicho, I. Quadrado and S. Silvestre of Pavement management system for Lisbon. The James Hill Prize, presented for the best paper on a municipal engineering topic, was awarded to M. Crookston for his topic about the higher-density housing agenda and the 'urban renaissance'. The Frederick Palmer Prize, presented to the second best paper on a municipal engineering topic, was awarded to C. Greed for his topic on public toilets: the need for compulsory provision.
- Published
- 2005
- Full Text
- View/download PDF
10. Call for papers - 2013 INBAM Conference.
- Subjects
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INDUSTRIAL management , *MANAGEMENT conferences , *BUSINESS research - Abstract
A call for papers for the third conference of the International Network of Business and Management Journals (INBAM) to be held Lisbon, Portugal from June 17 to 19, 2013 is presented.
- Published
- 2012
- Full Text
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11. Em busca do retrato original de Afonso de Albuquerque – novas revelações na Galeria dos Vice-Reis de Goa.
- Author
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REIS, TERESA, VALADAS, SARA, MACHADO, ANA, PIORRO, LUÍS, CARRIÇO, NUNO, CARDOSO, ANA, TERESA CALDEIRA, ANA, BAPTISTA PEREIRA, FERNANDO ANTÓNIO, and CANDEIAS, ANTÓNIO
- Subjects
ANCIENT art ,HISTORICAL source material ,MUSEUM exhibits ,NATIONAL museums ,RESEARCH personnel ,MULTISPECTRAL imaging - Abstract
Copyright of Conservar Património is the property of Associacao Profissional de Conservadores-Restauradores de Portugal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
12. We'll make a town from pure nothingness: The transition from rural village to industrial suburb in the Pirescoxe village.
- Author
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da Cunha Borges, João, del Pino Fernandes, Rui, Silva Lopes, Sara, and Marat-Mendes, Teresa
- Subjects
SUBURBS ,PUBLIC spaces ,VILLAGES ,URBANIZATION - Abstract
This paper focuses on challenge, quite typical of developing or industrializing regions, of converting a former rural settlement into a town. We analyse the urban process of Pirescoxe, a former hamlet in the riverside of Loures (Lisbon Metropolitan Region), observing the key episodes of historical formation of its current built structure, but highlighting a particularity, which was the recent conversion of elements of rural memory, built and unbuilt, into elements of cohesivity in an otherwise discrete suburban space. This analysis discloses aspects of the process of transformation of Pirescoxe over time, through its regional context, and accounting for the evolution of its typical building forms. It stems from observation of photographic and cartographic elements, historical and contemporary, as well as of the urbanization plans that transformed this space. The conclusion notes how the most decisive intervention in Pirescoxe was the one that more strongly emphasized the ruins of the rural past as elements of memory and identity. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
13. The Impacts of Open Data and eXplainable AI on Real Estate Price Predictions in Smart Cities.
- Author
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Trindade Neves, Fátima, Aparicio, Manuela, and de Castro Neto, Miguel
- Subjects
SMART cities ,REAL property ,PRICES ,URBAN community development ,ARTIFICIAL intelligence - Abstract
In the rapidly evolving landscape of urban development, where smart cities increasingly rely on artificial intelligence (AI) solutions to address complex challenges, using AI to accurately predict real estate prices becomes a multifaceted and crucial task integral to urban planning and economic development. This paper delves into this endeavor, highlighting the transformative impact of specifically chosen contextual open data and recent advances in eXplainable AI (XAI) to improve the accuracy and transparency of real estate price predictions within smart cities. Focusing on Lisbon's dynamic housing market from 2018 to 2021, we integrate diverse open data sources into an eXtreme Gradient Boosting (XGBoost) machine learning model optimized with the Optuna hyperparameter framework to enhance its predictive precision. Our initial model achieved a Mean Absolute Error (MAE) of EUR 51,733.88, which was significantly reduced by 8.24% upon incorporating open data features. This substantial improvement underscores open data's potential to boost real estate price predictions. Additionally, we employed SHapley Additive exPlanations (SHAP) to address the transparency of our model. This approach clarifies the influence of each predictor on price estimates and fosters enhanced accountability and trust in AI-driven real estate analytics. The findings of this study emphasize the role of XAI and the value of open data in enhancing the transparency and efficacy of AI-driven urban development, explicitly demonstrating how they contribute to more accurate and insightful real estate analytics, thereby informing and improving policy decisions for the sustainable development of smart cities. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. Triaxial shake table testing of an integrated low‐damage building system.
- Author
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Pampanin, Stefano, Ciurlanti, Jonathan, Bianchi, Simona, Perrone, Daniele, Granello, Gabriele, Palmieri, Michele, Grant, Damian N., Palermo, Alessandro, Costa, Alfredo Campos, Candeias, Paulo X., and Correia, António A.
- Subjects
SHAKING table tests ,EARTHQUAKE engineering ,CIVIL engineering ,EARTHQUAKE resistant design ,EARTHQUAKE intensity ,BUILDING-integrated photovoltaic systems ,FACADES - Abstract
Lessons from recent earthquakes have provided a tough reality check of the traditional seismic design approach and technologies, highlighting the urgent need for a paradigm shift of performance‐based design criteria and objectives toward low‐damage design philosophy and technologies for the whole building system. Modern society is asking for "earthquake proof" resilient buildings that are able to withstand seismic events without compromising their functionality. The EU‐funded SERA (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe Project) project discussed in this paper provided the opportunity to develop and validate within the European context an integrated seismic low‐damage prototype, including main structure and non‐structural elements, for the next generation of high‐performance buildings. This paper presents an overview of the research, involving three‐dimensional shake table tests of a two‐storey 1:2 scaled timber‐concrete post‐tensioned dissipative low‐damage structure "dressed" by earthquake‐resistant gypsum/masonry partitions and glass/concrete facades. Specimen details, construction and assembly phases, test setup, and experimental results are discussed. After many cycles of input motions at increasing levels of seismic intensity (higher than Collapse Prevention Limit State), the integrated building system exhibited a very high seismic performance. The experimental campaign carried out at the National Laboratory of Civil Engineering in Lisbon confirmed the unique potential of low‐damage technologies and the opportunity for their widespread implementation into design practice. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
15. MODERN MURAL PAINTINGS. THE PLANISPHERE PAINTING OF ALMADA NEGREIROS: TECHNICAL AND MATERIAL FEATURES OF PLASTERS AND PAINTING TECHNIQUE.
- Author
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GIL, Milene, HELVACI, Yigit, and MIRÃO, José
- Subjects
MURAL art ,PAINTING techniques ,PLASTER ,WORLD maps ,DRAWING techniques ,MODERN art ,NEAR infrared radiation ,INFRARED radiation - Abstract
This paper presents the results of observations and analysis carried out in the modern mural painting of 54m2, known as Planisphere (or Mapa-mundi), made by Almada Negreiros in 1939 in the city of Lisbon. The painting is Almada's first monumental painted work at fresco, and it is a striking, colourful composition inspired by early world maps of navigators. The aim is to ascertain how he built up this masterpiece and what artistic sources could have inspired him. The analytical setup comprised in-situ technical photography in the visible (Vis and Vis-Rak) and near infrared radiation (NIR), Vis-handled-Optical microscopy, complemented by laboratorial analysis of microsamples collected from paint layers with OM-Vis-UV and SEM-EDS. The data obtained was compared with the painting compendiums of Paul Bedouin's La fresque. Sa Technique-ses applications (1914) and of Costin Petresco's L'art de la fresque (1931), retrieved from the artist studio in 2019. The study reveals the first technical and material features found, such as the painting execution by large giornate, the use of different types of techniques to transfer the drawings to the wall, and the presence of paint layers made with buon and lime fresco. The results also reveal the likely strategies used by Almada to overcome the challenges imposed by a fresco execution, inspired by both eastern and western mural painting traditions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
16. Abstracts of Papers to be Presented at the Forty-Fifth Annual Meeting of the Society for Psychophysiological Research.
- Subjects
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PSYCHOPHYSIOLOGY , *SOCIETIES , *COMMITTEES , *CONFERENCES & conventions - Abstract
Provides information on the Forty-Fifth Annual Meeting of the Society for Psychophysiological Research which will be held in Lisbon, Portugal from September 21-24, 2005. Members of the Program Committee 2005; Activities included in the event; Topics to be discussed.
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- 2005
- Full Text
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17. The Lisbon Meeting, 11-14 October 2008.
- Subjects
ASSOCIATIONS, institutions, etc. ,CONFERENCES & conventions - Abstract
The article presents information on the forty-ninth meeting of the Society for the History of Technology, that took place in Lisbon, Portugal, on October 11-14, 2008. Several papers on technological issues ranging from biomedical sciences and business computing were discussed during the meeting. Some of the people who attended the meeting include Martina Hessler and Paul Ceruzzi.
- Published
- 2009
- Full Text
- View/download PDF
18. Methodology for Predicting Maritime Traffic Ship Emissions Using Automatic Identification System Data.
- Author
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Ribeiro da Silva, João N., Santos, Tiago A., and Teixeira, Angelo P.
- Subjects
MARITIME shipping ,AUTOMATIC identification ,SAILING ships ,CRUISE ships ,MARINE terminals ,CONTAINER ships ,IMMUNOCOMPUTERS - Abstract
This paper develops a methodology to estimate ship emissions using Automatic Identification System data (AIS). The methodology includes methods for AIS message decoding and ship emission estimation based on the ship's technical and operational characteristics. A novel approach for ship type identification based on the visited port terminal is described. The methodology is implemented in a computational tool, SEA (Ship Emission Assessment). First, the accuracy of the method for ship type identification is assessed and then the methodology is validated by comparing its predictions with those of two other methodologies. The tool is applied to three case studies using AIS data of maritime traffic along the Portuguese coast and in the port of Lisbon for one month. The first case study compares the estimated emissions of a ferry and a cruise ship, with the ferry emitting much less than the cruise ship. The second case study estimates the geographical distribution of emissions in the port of Lisbon, with terminals corresponding to areas with a heavier concentration of exhaust emissions. The third case study focuses on the emissions from a container ship sailing along the continental coast of Portugal, differing considerably from port traffic since it operates exclusively in cruising mode. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. Introduction to INFER special issue on "new aspects of economic and financial integration".
- Author
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Afonso, António, Badarau, Cristina, and Turcu, Camélia
- Subjects
MATHEMATICAL economics ,ECONOMIC research ,LABOR market ,FISCAL policy ,MACROECONOMICS - Abstract
This Special Issue (SI) gathers 13 papers presented at the 23rd INFER Annual Conference which took place in Lisbon, 8-10 September 2021, at ISEG - Lisbon School of Economics and Management. The conference was organised by INFER (International Network for Economic Research), UECE (Research Unit on Complexity and Economics), and REM (Research in Economics and Mathematics). The papers of the SI focus on key topics in international macroeconomics, revisit the fiscal policy conduct within a globalised world, investigate how uncertainty and risk affect macroeconomic policies, and analyse the links between labor market outcomes, automation, and economic integration. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
20. On the Seismic Vulnerability Assessment of Urban Areas Using Census Data: The Lisbon Metropolitan Area as a Pilot Study Area.
- Author
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Xofi, Maria, Ferreira, Tiago Miguel, Domingues, José Carlos, Santos, Pedro Pinto, Pereira, Susana, Oliveira, Sérgio C., Reis, Eusébio, Zêzere, José Luís, Garcia, Ricardo A.C., and Lourenço, Paulo B.
- Subjects
METROPOLITAN areas ,CITIES & towns ,PILOT projects ,REINFORCED concrete ,RISK assessment ,ECOLOGICAL risk assessment - Abstract
This paper presents a procedure for the application of an index-based vulnerability assessment method to the seismic risk assessment of 292,978 reinforced concrete and 152,916 unreinforced masonry buildings in the Lisbon Metropolitan Area (LMA). A singular innovation of this proposed methodology is that it is tailored to be fed with data from the 2011 national population and housing Census. The vulnerability results are then combined with the seismic hazard component into a GIS tool used to map seismic risk across the LMA. The spatial representation of these results highlights the areas of different levels of vulnerability and risk. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
21. Educommunication and Empowerment in Cardiovascular Health of Lisbon Citizens.
- Author
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Belim, Célia, Baptista, Raphaël, Cruz, Carla, and Cunha, Maria João
- Subjects
COMMUNICATION in education ,CARDIOVASCULAR system ,HEALTH Belief Model ,INFORMATION-seeking behavior ,SELF-efficacy ,HEALTH literacy ,EMOTIONS ,CARDIOVASCULAR diseases - Abstract
Copyright of Comunicar (English Edition) is the property of Oxbridge Publishing House and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
22. Hydrodynamic Simulation of Green Hydrogen Catamaran Operating in Lisbon, Portugal.
- Author
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Soni, Gaurav, Neto, Rui Costa, and Moreira, Lúcia
- Subjects
HYBRID systems ,DIESEL motors ,FUEL cells ,CATAMARANS ,ALTERNATIVE fuels ,HYDROGEN analysis ,HYDROGEN - Abstract
Similar to other industries, the maritime industry is also facing increasing restrictions on ships regarding pollution control. The research presented in this paper is aimed at studying the pros and cons of alternative fuels followed by a detailed analysis on hydrogen fuel cells (PEMFC) for a particular ship operating in Lisbon, Portugal. Dynamic forces acting on the ship have been studied for a year. Assessing various scenarios based on these results aids ship operators in making informed decisions regarding the future course of action for their existing vessels. These different cases are first: business as usual (diesel engine), second: replacing the diesel engine with a hydrogen hybrid system and, third: replacement of the ship with a new hydrogen hybrid ship. The study is based on the simulation of numerical equations and CFD simulation results. As the result, the second scenario is best suited in both aspects; namely, environmental and economic. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
23. The potential of integrated transport modes: modelling the combined use of bicycles and train in Lisbon, Portugal.
- Author
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Santos, Teresa, Mendes, Ricardo Nogueira, and Julião, Rui Pedro
- Subjects
CHOICE of transportation ,CYCLING ,TRAVEL time (Traffic engineering) ,BICYCLES ,WATERSHEDS ,CAPITAL cities - Abstract
Many capital cities are expanding bicycle lanes or investing in public bike-sharing systems to make cycling mobility a viable transport solution within urban areas. While bicycles are fit for short-distance trips (<15 minutes), their attractiveness declines for longer trips (Ton et al., 2020; Handy et al., 2014; Jäppinen et al., 2013). So, it is opportune to estimate to what extent the accessibility can be increased when intermodal solutions are available. In this paper, a quantitative analysis of different mobility scenarios is conducted. The aim is to evaluate how time travel and accessibility to amenities by bike, can be improved if public transportation such, as the train, is considered. The analysis uses open data and detailed GIS-based network analysis to examine the spatial relationship between transport opportunities, travel time and amenities access in Lisbon, Portugal. Three mobility scenarios are considered: in the first scenario, short-distance trips by bike from home are evaluated (15-minute travel). Then, to evaluate the contribution in time travel of potential modal shift (bike and train) vs individual car, second and third scenarios are presented considering longer distance travels within the city of Lisbon, during peak hours. Results suggest that for longer trips, the combined use of bicycle and train infrastructure can be a faster or more convenient alternative to individual car use. Also, multimodal cycling can expand riders' area of influence and thus increase the accessibility to opportunities. So, people living near train stations can beneficiate from a "potential" proximity to a diversity of amenities that are geographically more distant. In Lisbon, 34% of the population live within the 10-minute bicycle catchment areas around the 8 train stations from Cintura Line and can thus benefit from this combination of transport modes. City planners can use this methodology to prioritize spaces where investing in accessibility can have the largest impact in terms of improving connections between homes and destinations. This methodology, developed and tested in Lisbon, can be applied in other cities to support planning interventions regarding sustainable transport alternatives. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
24. Energy Efficiency in Historic Museums: The Interplay between Thermal Rehabilitation, Climate Control Strategies and Regional Climates.
- Author
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Silva, Hugo Entradas and Henriques, Fernando M. A.
- Subjects
ENVIRONMENTAL engineering ,ENERGY consumption ,HISTORIC buildings ,REHABILITATION ,HISTORICAL museums - Abstract
Museums housed in historical buildings combine the intrinsic value of the collections with the historical and architectural values of the building itself. Although usually made with thick elements with high thermal inertia, very effective in damping and delaying the heat flow, these buildings are usually characterized by elements with low thermal resistance, poor-quality windows and low area/volume ratio in the noblest buildings, which renders them ineffective at maintaining a stable indoor climate adequate for conservation, comfort and energy efficiency issues. In this paper, a simulation study was carried out to analyze the impact of the building location (weather), thermal envelope and climate control strategies by analyzing a generic room of the National Museum of Ancient Art of Lisbon. A simulation study was carried out for 15 European cities to verify the impossibility of standardizing the rehabilitation solutions in cultural heritage since energy needs depend on the location. It was concluded that the focus on climate control strategies has great potential for energy reduction and that in temperate climates of southern Europe, the improvement of thermal transmittance has a reduced effect on the building's response. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
25. دور الاتحاد الأوربي في حل الصراعات للجوار الشرقي: نماذج مختارة.
- Author
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نهرين جواد شرقي
- Subjects
CONFLICT management - Abstract
Copyright of Journal of Political Sciences is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
26. Czech Grey Literature and Research Outputs: Transformation of the NUŠL Service.
- Author
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Černohlávková, Petra and Vyčítalová, Hana
- Subjects
GREY literature ,INSTITUTIONAL repositories ,NATIONAL libraries - Abstract
The Czech National Repository of Grey Literature (NUŠL) has been bringing GL to science and society over 10 years. It is based on Lisbon definition from 1997, updated in 2004, and on its own document typology that was created in 2008 as one of the outputs of the same name project. Since then there have been several papers and articles calling for new definition and new typology, asking what should be still considered GL and what not anymore. (Savić, 2018; Baxter and Hilbrecht, 2020) Savić (2019) pointed out that if everything can be marked as GL then probably nothing is GL. The NUŠL already had to change its typology few times to provide still good service and to reflect research institutions' needs. However, it is not only the document typology that influences the repository and the service, there are other circumstances which affect further development of the NUŠL such as partner institutions' needs, the National Research, Development and Innovation Policy, European Commission's guidelines on research outputs, current quantity and quality of other repositories and systems for grey literature and research results in the Czech Republic etc. The contribution/paper will bring a brief overview on NUŠL's experience over 10 years of providing the service. Then it will be focused on a current situation in research area of the Czech Republic in detail. Finally, out of these points will conclude to the necessary changes that has to be taken by NUŠL and his provider -- National Library of Technology in Prague, in order to keep the service meaningful. [ABSTRACT FROM AUTHOR]
- Published
- 2021
27. The impact of public bike-sharing systems on mobility patterns: Generating or replacing trips?
- Author
-
Moura, Filipe, Valença, Gabriel, Félix, Rosa, and Vale, David S.
- Subjects
LOGISTIC regression analysis ,CYCLING ,CHOICE of transportation - Abstract
Bike-sharing systems allow occasional and regular users to travel by replacing other transport modes for the same trip or generating a new journey. Our research assesses the demand for Lisbon's public dock-based bike-sharing system (BSS), named GIRA. This paper aims to identify the determinant factors that influence the potential of the BSS to generate new trips or replace previous modes using a conditional logit model based on a survey of 3112 BSS users. The survey results indicate that GIRA generated approximately 20% of the BSS trips, i.e., they would not have been realized if GIRA did not exist. The remaining BSS trips replaced other motorized (55%) and non-motorized (25%) trips. The main determinants explaining a higher likelihood of replacing different modes are having a yearly GIRA pass and a bike-sharing station within a 5-min walk. In contrast, regular car users are more likely to generate new trips, suggesting they use bike-sharing for recreational purposes. The findings provide policymakers with an assessment of determinants which may influence bike-sharing users to generate or replace trips from other modes and, consequently, define policies to potentially increase bike-sharing. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
28. Tracking the Decolonial in African Christian Theology: A Southern African Perspective on Mission from the Margins as a Decolonial Mode of Mission.
- Author
-
Sakupapa, Teddy Chalwe
- Subjects
THEOLOGY ,CHRISTIANITY ,DECOLONIZATION ,CONCEPT mapping ,COUNCILS & synods - Abstract
Drawing on the framework and pluriversalist vision of decoloniality, this article offers a conceptual mapping of theoretical debates and trends in recent discourse on the decolonization of theology in the Southern African context with a view to outlining key missiological implications of such debates. It posits a view of African decolonial theology as the foregrounding of local, indigenous, contextual knowledge in discourse and as the praxis of faith rooted in contextual analysis of historical realities. This contribution articulates the notion of "mission from the margins," derived from Together towards Life, as a decolonial mode of mission that gestures toward an epistemological shift in missional thinking. An initial version of this paper was presented at the seminar on decolonization organized by the World Council of Churches' Commission on World Mission and Evangelism that was held in Lisbon, Portugal, in June 2023. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
29. 20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)—Studies towards Their Conservation and Repair.
- Author
-
Almeida, Luís, Santos Silva, António, Veiga, Rosário, and Mirão, José
- Subjects
MORTAR ,TWENTIETH century ,MODULUS of elasticity ,COMPRESSIVE strength ,CONSERVATION & restoration - Abstract
This paper addresses the study of renders and plasters' physical and mechanical characteristics from selected buildings awarded during the 20th century with a renowned architectural prize in Lisbon, Portugal. The characterisation was done to understand mortars' physical and mechanical properties and their evolution during the 20th century. These characteristics will also help determine compatibility requirements for future conservation and restoration interventions. Since these buildings have a heritage great interest status, the need to preserve them is a paramount issue. Fifty-three samples from nine case studies were studied via capillary water absorption, drying rates, open porosity, dynamic modulus of elasticity, and compressive strength. There were limitations in sample collection due to the buildings being in service and technical constraints regarding sample quantity for testing and separating layers of the multi-layer mortar system. Nevertheless, the results showed different ranges of quantitative values for these tests, whether the mortars were lime, gypsum, cement-based or had lime–cement blended formulations. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
30. Decision Making Under Impending Regime Shifts.
- Author
-
Seifert, Matthias, Ulu, Canan, and Guha, Sreyaa
- Subjects
DECISION making ,RISK premiums ,PROSPECT theory ,INSURANCE companies ,LEGAL judgments ,BEHAVIORAL economics - Abstract
In environments with impending regime shifts, previous research studies probability judgments of decision makers (DMs) regarding a regime shift and finds evidence for the system neglect hypothesis: In unstable environments with precise signals, DMs exhibit relatively more underreaction in their probability judgments, and in stable environments with noisy signals, they exhibit relatively more overreaction. In the present paper we focus on pricing decisions and study how risk attitudes, as well as probability judgments regarding a regime shift, affect these decisions. We develop a model that integrates prospect theory with the system neglect hypothesis and compare changes in empirical pricing decisions to those of a Bayesian risk-neutral agent. We find a pattern of under- and overreaction in pricing decisions that mimics the system neglect hypothesis in probability judgments only when the DM's prior probability of a regime shift is low; the system neglect pattern vanishes when the DM's prior probability of a regime shift is high. We argue that in the case of low priors, changes in risk attitude in reaction to signals indicative of a regime shift amplify system neglect in probability judgments. In the case of high priors, on the other hand, changes in risk attitude dampen the effect of system neglect. We test our model predictions in experimental insurance markets and offer various extensions to check for the robustness of our findings. Finally, we discuss implications for managerial practice in organizational contexts that are characterized by continuous change. This paper was accepted by Yuval Rottenstreich, behavioral economics and decision analysis. Funding: This work was funded by Fundação para a Ciência e a Tecnologia (UIDB/00124/2020, UIDP/00124/2020 and Social Sciences DataLab - PINFRA/22209/2016), POR Lisboa and POR Norte (Social Sciences DataLab, PINFRA/22209/2016). Furthermore, it was supported by the Ministerio de Ciencia e Innovación España [10.13039/501100011033, Grants ECO2014-52925-P, PID2019-111512RB-I00-HMDM, and HDL-HS-280218]. Supplemental Material: The data files and online appendix are available at https://doi.org/10.1287/mnsc.2022.4661. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
31. Impact of the New Electricity Remuneration Scheme on the Waste-to-Energy Recovery Activity in Portugal.
- Author
-
Silva, Mário, Lagarto, João, Sousa, Jorge, Mil-Homens, Feliz, Viveiros, Carla, and Barata, Filipe
- Subjects
WAGES ,WASTE products as fuel ,ELECTRICITY pricing ,PRICES ,WASTE treatment - Abstract
The remuneration scheme for the electricity produced by Waste-to-Energy (WtE) recovery plants has changed recently in Portugal according to 2020 legislation. The new model, linking the electricity remuneration from WtE plants to the spot electricity prices, is expected to bring greater uncertainty in the waste activity, which is a novelty for the sector. In Portugal, Valorsul is the municipal waste treatment entity responsible for the recovery and treatment of municipal solid waste (MSW) produced in 19 municipalities in the Lisbon area. This paper highlights the impact of the new Portuguese electricity remuneration scheme for electricity from waste on Valorsul's WtE plant. For this purpose, the new remuneration scheme is modeled and simulated based on electricity spot market price scenarios, which are compared with the base case scenario of the former remuneration scheme. Considering different electricity prices for the electricity produced by the WtE plant, the present study anticipates the consequences of the gate-fee of such regulatory changes. Results show that any price changes in the electricity remuneration scheme are offset by equivalent changes in the waste gate-fee. Consequently, the change in the remuneration of the electricity from the WtE plant is, in fact, neutral for the Valorsul accounts and lower revenues from the electricity generation activity of the WtE will negatively impact the gate-fee prices paid by the waste users. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
32. Equity in teaching science during times of crisis: a study with Portuguese science teachers.
- Author
-
Baptista, Mónica, Costa, Estela, and Martins, Iva
- Subjects
SCIENCE teachers ,COVID-19 pandemic ,SCIENCE education ,PROBLEM solving ,ETHNICITY ,CRISES ,SCHOOL children - Abstract
This work aims to examine how science teachers ensured equity during the COVID-19 pandemic. The participants are six science teachers who were teaching in different middle schools within the Lisbon district. Their classes were heterogeneous, with students from different socio-economic backgrounds and ethnicities, and with diverse levels of motivation to learn science and in their academic performance in science. Data were collected through written reflections and interviews. In a crisis context such as COVID-19, which affected schools worldwide, the study contributes to deepening our knowledge about equity during crisis, presenting several measures taken by teachers to deal with the pandemic. Teachers gave instructions to their students to attend classes through public television, which was accessible to the entire population, and developed complementary materials on it. Also, they created moments of individualized support to face situations of inequity, using distance learning platforms or other means of communication. Teachers built and implemented activities that value hands-on and problem solving, enabling their students to achieve academic success. We believe this paper allows the science education community to reflect on possibilities to ensure equity in the context of unpredictable crises. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
33. THE XXIst IFPS FORUM, "THE PSYCHOANALYTIC ENCOUNTER: CONFLICT AND CHANGE", organized by the Associaçâo Portuguesa de Psicoanálise e Psicoterapia psicanalitica, WILL TAKE PLACE IN LISBON ON FEBRUARY 5-8, 2020,.
- Subjects
FORUMS - Published
- 2019
- Full Text
- View/download PDF
34. Touristification, transnational gentrification and urban change in Lisbon: The neighbourhood of Alfama.
- Author
-
Sequera, Jorge and Nofre, Jordi
- Subjects
GENTRIFICATION ,URBAN renewal ,URBAN tourism ,NEIGHBORHOODS - Abstract
Copyright of Urban Studies (Sage Publications, Ltd.) is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
35. Displaying a taxidermy rhinoceros in a museum: the Lisbon conservation approach.
- Author
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TEIXEIRA, CATARINA, WATERHOUSE, DAVID M., MOURA, LAURA, and ANDRADE, PEDRO
- Subjects
TAXIDERMY ,SCIENCE museums ,RHINOCEROSES ,NATURAL history museums ,NATIONAL museums - Abstract
Copyright of Conservar Património is the property of Associacao Profissional de Conservadores-Restauradores de Portugal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
36. Risk mitigation in urban bus concession contracts: Overcoming uncertainties with a real options model.
- Author
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Stumpf, Gabriel, Marques, Rui Cunha, Geddes, R. Richard, and Igrejas da Silva, Rafael
- Subjects
- *
LEGAL costs , *SERVICE contracts , *MONTE Carlo method , *CONTRACTS , *GOVERNMENT policy , *BUS transportation , *TOLL roads - Abstract
In this paper, we analyzed a risk-sharing mechanism that can be used in urban bus public service contracts (PSC) to deal with demand uncertainty in the upcoming years. This mechanism is similar to a collar option: an MRG (Minimum Revenue Guarantee) combined with a revenue cap. We applied this mechanism to a case study, the Lisbon Metro Area bus contracts. We compared the chosen model (a gross cost contract) with a simulated scenario modeled as a collar option. To develop this scenario, we model the flexibilities applying Real options Analysis and the project uncertainty as a Geometric Brownian Motion (GBM). The calculations were performed using Monte Carlo simulation. The results show that, compared to the gross cost, the collar option model allows the private operator to benefit from a potential demand increase. In the case of a downturn, the loss is shared between the two sides, reducing the contract cost borne by the government. Furthermore, from a public policy perspective, contrary to the gross cost model, this model may incentivize the private partner to improve service quality as a strategy to increase demand and, consequently, revenues. In addition, if demand evolves in a different trend, the financial rebalance is made automatically, reducing litigation costs for both sides. • The application of real option analysis to bus public service contracts is still emerging. • Modelling risk-sharing in urban bus operations is crucial for maintaining the long-term financial sustainability. • The collar option model allows the private operator to benefit from a potential demand increase. • Contract financial rebalance is made automatically by exercising a collar option, reducing litigation costs for all parties. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
37. Irradiation Analysis of Tensile Membrane Structures for Building-Integrated Photovoltaics.
- Author
-
Marchwiński, Janusz, Milošević, Vuk, Stefańska, Anna, and Lucchi, Elena
- Subjects
PHOTOVOLTAIC cells ,PHOTOVOLTAIC power generation ,BUILDING-integrated photovoltaic systems ,SOLAR cells ,SOLAR radiation ,ENERGY consumption - Abstract
A dynamic development in building-integrated photovoltaics (BIPVs) has been observed in recent years. One of the manifestations of this trend is the integration of photovoltaic cells with tensile membrane structures, including canopies. Such solutions bring mutual benefits—the roofs provide a potentially large area for the application of photovoltaic cells while contributing to the improvement of the energy efficiency of the building. However, what is lacking is thorough research on the most favourable photovoltaic cell exposure within these roofs. This paper investigates the optimal position of photovoltaic cells in terms of energy gains related to exposure to solar radiation. Hypar geometries were simulated as the most characteristic of tensile membrane roofs and, simultaneously, the least obvious in the research context. Simulations were performed for 54 roof samples with the following geometric variables: roof height (1.0, 3.0 m) and membrane prestress (1:3, 1:1, 3:1). The research was conducted for three roof orientations defined by azimuth angles of 0, 22.5, and 45 degrees and three geographic locations, Oslo, Vienna, and Lisbon, representing Northern, Central, and Southern Europe, respectively. The Sofistik and Rhino + Ladybug software were used to create models and simulations. The study results show significant differences in the roof irradiation and, consequently, the optimal location of BIPVs depending on the above variables. Generally, it is the curvature that is the most important variable-less curved roofs are more irradiated and thus more suitable for BIPVs. Prestress and the azimuth angle are of lesser significance, but defining the optimal use of a BIPV depends on the adopted scenario regarding the percentage of membrane coverage with PVs—other recommendations concern the strategy of total or partial roof coverage with PV cells. The difference between optimally and incorrectly designed roofs may amount to a 50% electricity gain from PV cells. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. Urban Regeneration, Rent Regulation and the Private Rental Sector in Portugal: A Case Study on Inner-City Lisbon's Social Sustainability.
- Author
-
Alves, Sónia, Azevedo, Alda Botelho, Mendes, Luís, and Silva, Katielle
- Subjects
SOCIAL sustainability ,PRIVATE sector ,RENT control ,PRICES of securities ,FREE enterprise ,URBAN renewal ,RENT - Abstract
Rent regulation has a significant impact on tenant–landlord relations and the overall functioning of the private rented sector. Different forms of rent regulation—in relation to rent levels, rent increases, security of tenure, etc.—also affect the quality, the social composition and, ultimately, the size of the private rented sector. Together they affect the character of much urban regeneration and renewal. The introduction in Portugal of more flexible rent regimes that aimed to gradually replace open-ended tenancies with freely negotiated contracts led researchers to classify the country as a free market system. In this paper, by using a mixed methods approach that combined desk-based research with census data and in-depth interviews, we test the) classification of Portugal's rented sector as a free market against empirical evidence and examine the impacts of the main rent regulation regimes on social sustainability-oriented urban regeneration. Our results show that open-ended contracts, which were signed before the 1990s, still account for a significant part of the private rented sector, thus the classification of Portugal's rent regulation regime as a free-market system does not capture the country's most significant features. This is particularly evident in inner-city Lisbon, where various extreme rent regimes (in terms of contract duration, tenant security and prices) coexist, giving rise to tensions between housing quality and demographic shifts that threaten the overall social sustainability of the city. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. PRELIMINARY DIAGNOSTIC SURVEY OF DETERIORATED PAINT LAYERS AT THE MARITIME STATION OF ROCHA DO CONDE DE ÓBIDOS, LISBON: A MULTIANALYTICAL RESEARCH.
- Author
-
RIX, Keelie S., VALADAS, Sara, CARDOSO, Inês, DIAS, Luís, and GIL, Milene
- Subjects
MICROSCOPY ,PAINT ,MURAL art ,PAINTING techniques ,ACRYLIC paint ,RESEARCH questions ,SCANNING electron microscopy - Abstract
This paper reports the preliminary diagnostic survey of the six controversial mural paintings painted in 1946-49 at the Maritime Station of Rocha do Conde de Óbidos in Lisbon, considered the artistic epitome of Almada Negreiros mural painting art. Four research questions drove this research: a) What are the main decay phenomena present and their sources? b) Which are the paint layers most affected, and are they linked to a particular pigment? c) Is there any relation between the painting technique used and the deterioration or stability of the paint layers and pigments? And finally, d) Are there differences in the decay phenomena present in both maritime stations of Alcântara? The analytical setup comprised in-situ and laboratory analysis by way of technical photography documentation (TP), handled optical microscopy (h-OM), handheld X-Ray Fluorescence (XRF), complemented by optical microscopy of microfragments and cross sections (OM-Vis-UV), X-Ray Diffraction (XRD), and Scanning Electron Microscopy coupled with Energy Dispersive Spectroscopy (SEM-EDS).The first results indicate flaking of the paint layers as the main and most severe deterioration feature present in most of the murals. The yellow ochres, browns, blacks, and light greens are the colours most affected, showing different degrees of loss. The pictorial technique used, the presence and action of soluble salts in the structure, and even the products used as adhesives during past interventions might be the root of this phenomenon. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
40. THE ROLE OF TOURISM IN THE REGENERATION OF PERIPHERAL NEIGHBOURHOODS: A COMPARISON BETWEEN ALCÂNTARA (LISBON) AND BAGNOLI (NAPLES).
- Author
-
BRITO, Luis Miguel and ZARRILLI, Luca
- Subjects
URBAN tourism ,CITIES & towns ,TOURIST attractions ,TOURISM ,URBAN geography ,CENSUS - Abstract
The urban geography of tourism destinations is always changing. These changes are part of a process of polarization in which some neighborhoods become increasingly popular, while others start to decline. We may observe these facts in such cities as Lisbon and Naples, two destinations that benefit from a strong tourism dynamism, mainly cultural. Despite the millions of visitors every year, both supply and demand are not homogeneous in these cities, concentrating demand in the Historical centres. It is undeniable that both Lisbon and Naples have more to offer, with a vast and differentiated heritage throughout all parts of the city. Despite being recognized as quality destinations, the polarization of supply and demand must be fought, allowing the sustainable growth of the Historic Centres and other urban areas. This paper aims to contribute to the debate on the way in which peripheral neighborhoods are transformed following the advance of tourism, in the context of the centre -periphery relationship on an urban scale and in the light of the functional rearrangement that accompanies the processes of urban regeneration. A comparison will be made between two former industrial peripheries: Alcântara (Lisbon) and Bagnoli (Naples). In addition to the bibliographic and documentary analysis, the authors have carried out an intense fieldwork, aimed at the census of the tourist facilities and their comparison. The results of the research show that Alcântara has undergone a process of urban regeneration in recent years which fostered tourist development, while Bagnoli seems to be stuck in a state of incapacity to develop a systemic regional planning, which also affects the pace of a possible tourist prospect. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
41. Bar Semente (Rio de Janeiro) and Tejo Bar (Lisbon): Setting the stage for the renovation of rooted cultural traditions.
- Author
-
Brufato, Aline, Bartholo, Roberto, and Loureiro, Felipe
- Subjects
BARS (Drinking establishments) ,ENTREPRENEURSHIP ,CULTURAL property ,TOURIST attractions - Abstract
Copyright of Cadernos de Geografia is the property of Imprensa da Universidade de Coimbra and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
42. Storm surge and tsunami deposits along the Moroccan coasts: state of the art and future perspectives.
- Author
-
Khalfaoui, Otmane, Dezileau, Laurent, Mhammdi, Nadia, Medina, Fida, Mojtahid, Meryem, Raji, Otmane, Talibi, Hajar El, Mellas, Samira, Degeai, Jean-Philipe, Khalidi, Khalid El, Snoussi, Maria, Bendahhou, Zourarah, and Aboumaria, Khadija
- Subjects
STORM surges ,TSUNAMIS ,TSUNAMI warning systems ,COASTS ,HISTORICAL libraries ,CITIES & towns ,SCIENTIFIC community - Abstract
The Moroccan coasts are occasionally inundated by storm surges and tsunamis. Local historical archives recorded some of these events, such as the storm surge of 1913 CE and the tsunami of 1755 CE. The latter remains the most destructive event the country has ever faced, with major human and economic losses recorded mainly between the two cities of Tangier and Safi. The privileged way to prevent any hazard related to these events is to study their past occurrences and impacts. However, historical evidences about these natural hazards are often very scarce to determine their return periods and evaluate their intensities. The scientific community increasingly uses sedimentary archives from coastal environments, since they offer a viable complement to historical archives. Several studies using this approach have been conducted on the Moroccan coast in recent years; however, until now, there has been no review dealing with these studies, which is the main objective of this paper. Twenty sites with traces of coastal inundation deposits have been inventoried during this work, and most of them are located along the Atlantic coast. The Mediterranean side remains poorly studied despite the presence of tsunami and storm surge risks. The review draws attention also to the absence of chronological data for most of the coastal inundation deposits recognized up to now along the Moroccan coasts, which is a major issue that prevents the determination of the return period of these events. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
43. Students with an immigrant background in the Lisbon Metropolitan Area. Evidence at the municipal, school, and class levels.
- Author
-
de Almeida, Sílvia, Firmino, João, Mesquita Gabriel, João, Hortas, Maria João, and Catela Nunes, Luís
- Subjects
IMMIGRANT students ,METROPOLITAN areas ,SEGREGATION in education ,BIRTHPLACES ,PORTUGUESE language ,STUDENT records ,BASIC education - Abstract
This paper focuses on the territorial distribution of students, in Lisbon Metropolitan Area (LMA), with an immigrant background enrolling in the 3rd cycle of basic education in Portugal and on the differences in the academic performance of students attending the last year of this cycle, considering their birthplace. Differences are examined by estimating several linear regression models using as dependent variable two performance indicators -- students' results in the 9th grade national exams in the Maths and Portuguese Language subjects; and a binary indicator of a successful academic record during the 3rd cycle. The results confirm significant differences in the students' school performance depending on their birthplace: students from Brazil and Portuguese-speaking African countries (PALOP) have the most significant differences compared to students from Portugal. A substantial part of these differences is already present at the end of the 2nd cycle, and subsist when accounting for students' socioeconomic characteristics. Our results show that a considerable part of the differences is explained by factors inherent to the school and the class, and not so much to the municipality, which might reveals the existence of some types of segregation experienced by these students, either at intra-municipality level (by the different schools) or intra-school level (by the different classes). [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
44. StainView: A Fast and Reliable Method for Mapping Stains in Facades Using Image Classification in HSV and CIELab Colour Space.
- Author
-
Torres-Gonzáles, Marta, Valença, Jónatas, Santos, Bruno O., Silva, Ana, and Mendes, Maria P.
- Subjects
IMAGE recognition (Computer vision) ,COLOR space ,BUILDING inspection ,PRESERVATION of architecture ,COGNITIVE processing speed ,FACADES - Abstract
The new Construction 4.0 paradigm takes advantage of existing technologies. In this scope, the development and application of image-based methods for evaluating and monitoring the state of conservation of buildings has shown significant growth, including support for maintenance plans. Recently, powerful algorithms have been applied to automatically evaluate the state of conservation of buildings using deep learning frameworks, which are utilised as a black-box approach. The large amount of data required for training, the difficulty in generalising, and the lack of parameters to assess the quality of the results often make it difficult for non-experts to evaluate them. For several applications and scenarios, simple and more intuitive image-based approaches can be applied to support building inspections. This paper presents the StainView, which is a fast and reliable method. The method is based on the classification of the mosaic image, computed from a systematic acquisition, and allows one to (i) map stains in facades; (ii) locate critical areas; (iii) identify materials; (iv) characterise colours; and (v) produce detailed and comprehensive maps of results. The method was validated in three identical buildings in Bairro de Alvalade, in Lisbon, Portugal, that present different levels of degradation. The comparison with visual inspection demonstrates that StainView enables the automatic location and mapping of critical areas with high efficiency, proving to be a useful tool for building inspection: differences were of approximately 5% for the facade with the worst and average state of conservation, however, the values deteriorate for the facade under good conditions, reaching the double of percentage. In terms of processing speed, StainView allows a facade mapping that is 8–12 times faster, and this difference tends to grow with the number of evaluated façades. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
45. Long-run suburbanization trends in Portugal.
- Author
-
Rocha, Bruno T.
- Subjects
SUBURBANIZATION ,METROPOLITAN areas ,INNER cities ,CITIES & towns ,CENSUS - Abstract
Using census data from 1960 to 2021, this graphic reveals how suburban municipalities evolved from representing less than 19% of the population in mainland Portugal to almost 39%. In particular, suburban municipalities constitute the only group of municipalities for which doubling population size occurred more often than not. At the same time, Lisbon and Porto, the central cities of the two metropolitan areas, lost 32% and 24%, respectively, of their population. The paper concludes by briefly enumerating the causes of suburbanization in Portugal that have been more discussed in the literature. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
46. “Authentic provenance.” Locality and Colonial Collecting for the Lisbon Zoological Museum, 1860s–1880s.
- Author
-
Madruga, Catarina
- Subjects
ZOOLOGICAL specimens ,GOAL (Psychology) ,NINETEENTH century ,MUSEUMS - Abstract
Nineteenth-century zoological collections consisted of large series of animals, which had been trapped, uprooted, hunted, killed, put into containers, dried, and preserved. From distant far-flung outposts overseas, colonial collections were shipped to central metropolitan institutions where they were claimed as a crucial part of the understanding of global biodiversity. Knowledge about nature was reliant on such scientific specimens and, therefore, dependent on fieldwork, which comprised much more than the act itself of sampling nature. Collecting from the field is a matter of access to places, materials, tools, and people with the know-how to find, capture, and interpret nature and, often, to prepare animals as specimens. Although different layers of labor, expertise, and knowledge lie behind zoological collections, much of it was produced and negotiated outside museums’ walls. Using the historical documentation of zoological collections in the Museu Nacional de Lisboa in the second half of the nineteenth century as a case study, this paper highlights the role of colonial suppliers as mediators for the museum’s agenda while adjusting to local circumstances and maintaining their own personal goals. Studies of historical provenance have clarified not only how zoological specimens were gathered and collated but also how their geographical origin was used as a mechanism of centralization of authority. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
47. Airbnb, buy-to-let investment and tourism-driven displacement: A case study in Lisbon.
- Author
-
Cocola-Gant, Agustin and Gago, Ana
- Subjects
GENTRIFICATION ,EFFICIENT market theory ,INVESTORS - Abstract
Through detailed empirical analysis of a central area of Lisbon, this paper explores whether short-term rental platforms such as Airbnb channel investment in residential real estate and the way in which the local community is affected by the proliferation of apartments rented to visitors. Between 2015 and 2017 we conducted fine-grained fieldwork in the historical neighbourhood of Alfama and identified both the producers and socio-spatial consequences of short-term rentals. Our research did not find evidence of a sharing economy. Rather, it found a process of buy-to-let investment in which different players make profits from rents and displace residents with tourists. The paper develops two main arguments: first, we suggest that Airbnb acts as an instrument that contributes to the financialization of housing. Compared to the traditional rental market, short-term rentals offer a number of benefits that enhance market efficiency for property owners, making them increasingly attractive for both local and global investors. We found that the suppliers of short-term rentals are primarily investors who use housing as an asset to store capital. The main advantage of the short-term rental market for investors is that while they can make profits by renting properties to visitors, they can also sell them tenant-free at any moment. Second, Airbnb gives way to a hyper-flexible rental market that for tenants implies increasing insecurity and displacement concerns. We portray Airbnb as an example of buy-to-let gentrification that is experienced by residents as a process of social injustice. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
48. The Importance of Moisture Transport Properties of Wall Finishings on the Hygrothermal Performance of Masonry Walls for Current and Future Climates.
- Author
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Coelho, Guilherme B. A. and Henriques, Fernando M. A.
- Subjects
MASONRY ,EXTERIOR walls ,MOISTURE ,BRICK walls ,RAINFALL ,MORTAR - Abstract
A render is the first protective layer of exterior walls against the outdoor climate, which, due to its constitution, aims to gradually slow down the liquid moisture penetration to prevent it from reaching the wall inner layers. Due to the future expected changes in the outdoor climate, today's exterior mortar might not be adequately designed to protect these walls. This paper aims to analyse the influence of mortars on the hygrothermal performance of solid brick walls under current and future climates. The study includes four types of assemblies and three types of mortars, and it was carried out for Lisbon and three other climates by using a computational simulation tool. Finally, the moisture gains and respective reach due to the future wind-driven rain (WDR) spells were assessed by means of using future weather files for Lisbon's climate. It was shown that the solid brick layer is influenced differently depending on the characteristics of the mortar layers and outdoor conditions. In terms of WDR spells, aside from the precipitation and the spell period, the distribution of the WDR events within the spell also conditions the dryness of the assembly. The depth that the outdoor moisture was able to reach varies between 94 and 200 mm. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
49. The Post-COVID Home. How Confinement Altered Domestic Space Use and Living Modes, in Lisbon.
- Author
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Moreira, Ana and Farias, Hugo
- Subjects
DOMESTIC space ,COVID-19 pandemic ,COVID-19 ,FUNCTION spaces - Abstract
Not only is space use a result of spatial configuration, but it is also greatly determined by social patterns and society's living modes. The COVID-19 pandemic and confinement resulted, worldwide, in a 24/7 use of the domestic setting, which had to be adapted to the emergence of new needs and functions in the domestic space. The paper aims at understanding how COVID confinement altered domestic space use in Lisbon and how current society has maintained some of those changes, a reflection of new social patterns. The analysis is supported by an inquiry, carried out during the first confinement of 2020, in the city of Lisbon. Results show that domestic space use had to be adjusted to a new context, gaining new functions, and bringing into evidence the need for additional spaces. In light of the proven changes in living modes, the research concludes that the post-COVID home needs to be rethought and new housing programs should take into consideration the new social patterns and living modes. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
50. Linkage between electronic prescribing data and pharmacy claims records to determine primary adherence: the case of antihypertensive therapy in the Lisbon and Tagus Valley Region, Portugal.
- Author
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Coelho, André
- Subjects
DRUG prescribing ,DISEASE risk factors ,PRIMARY health care ,RENIN-angiotensin system ,PHARMACY - Abstract
Background Hypertension (HT) is highly prevalent and a major risk factor for cardiovascular disease. Over 42% of Portuguese adults have HT. Even though the benefits of antihypertensive (AHT) drugs have been demonstrated, HT control remains inadequate. One major reason is that patients often fail to take their medications as prescribed. This paper aims to determine primary adherence to AHT therapy in newly diagnosed and treated hypertensive patients in Primary Health Care (PHC) units of Lisbon and Tagus Valley Health Region. Methods This study reports data from a population-based, retrospective, cohort study from patients diagnosed with HT in PHC units of Lisbon and Tagus Valley Region from 1 January to 31 March 2011, with no prior use of AHT drugs. Primary adherence rate was expressed as number of claims records/total number of prescriptions records. Data were collected from SIARS for each patient during a 2-year period. Results Overall primary adherence rate was 58.5%, increasing with age. Rates were higher for men, living in the Lisbon Metropolitan Area and diagnosed with uncomplicated HT. Drugs acting on the renin–angiotensin system had the highest rates, increasing for fixed-dose combinations and diminishing with the increase of cost for the patient. Conclusions Overall, almost 1 out of 2 prescribed AHT drugs were not dispensed. Until this study, little was known in Portugal about primary adherence. Our findings imply that the potential benefits of AHT therapy cannot be fully realized in this population. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
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