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The employment–education trade-off in school-based vocational education
Martins, Pedro Silva; Silva, Pedro Luis; Temudo, Madalena; Pinho, AnaVocational education and training (VET) may accelerate employment transitions at the cost of reducing further education participation. We quantify this trade-off in a school-based VET system, drawing on linked administrative and survey data in Portugal. We use the share of lower-secondary classmates who subsequently choose upper-secondary VET as an instrument for individual VET enrollment. We find a pronounced ...
Mechanistic insights into the intrinsic drought resilience of Coffea spp. and i...
Semedo, José N.; Pais, Isabel P.; Leitão, António E.; Rodrigues, Ana P.; Marques, Isabel; Silva, Maria J.; Partelli, Fábio L.; Lidon, Fernando C.Drought is a critical climatic constraint to coffee, but its interaction with enhanced atmospheric [CO2] is highly relevant to the crop's sustainability under climate-change scenarios. We explored such interaction through the physiological and biochemical responses of 7-year-old potted plants of two genotypes: Coffea canephora cv. Conilon Clone 153 (CL153) and C. arabica cv. Icatu, grown under well-watered (WW)...
A dataset of harmonized global air quality monitoring metadata
Renna, Stefania; Rodriguez-Pardo, Carlos; Aleluia Reis, LaraThis study addresses the gap in air quality monitoring metadata reporting by building a classifier for air quality station types and area characteristics. It leverages ultra-high-resolution land cover data, complemented by additional demographic and gridded information. We employ advanced machine learning methods, including convolutional neural networks and transformers. Through a custom training approach, we f...
Towards a sustainable future
Rodrigues, José Noronha; Bhattacharya, Sumanta; Shinde, Tushaba; Cabete, Dora Cristina RibeiroObjective: The objective of this article is to examine the legal and regulatory framework governing Indian Railways in order to assess its capacity to support modernization, financial sustainability, safety, digital transformation, and environmental protection. Through a comparative analysis of international railway governance models from countries such as Japan, Germany, China, the United Kingdom, France, the ...
Material Reuse in the European Union Construction Sector
Silva, Inês; Martinho, Graça; Ramos, MárioThe progression towards a circular economy in the construction sector has gained attention as a response to rising resource consumption and construction and demolition waste generation, with material reuse playing a central role. In this context, this study analyses the literature on reuse in the construction sector, examining its investigation over time and its relation to European regulatory frameworks and po...
A New MSCSA Technique for Induction Motor Diagnosis Based on the Park Transform...
Pires, Vitor Fernão; Salatiel, Paulo; Cordeiro, Armando; Foito, Daniel; Pires, Armando J.; Martins, João F. A.Induction machines play a crucial role in industrial applications, making preventive maintenance combined with fault diagnosis techniques essential for ensuring reliable operation. One of the most widely used diagnostic methods for induction machines is Motor Current Signature Analysis (MCSA). However, this technique has certain limitations, particularly in the detection of incipient or small faults. Another we...
The transfer of management consulting to Europe: a comparative study
Luís, Maria Carlos Candeias da SilvaThe purpose of the following Work Project is to make a comparison between the recommendations that McKinsey & Company made to Imperial Chemical Industries, Unilever, and Companhia União Fabril in the 1960s and 1970s and how the consulting firm shaped European companies’ strategies to face competition in the European market. These companies had mainly grown by mergers and acquisitions resulting in very complicat...
Eclipse in the Press.
Simões, Ana; Carolino, Luís Miguel; Gessner, Samuel; Soares, Hugo; Luis, CristinaOn 29 May 1919, one of the most famous total solar eclipses in history provided a crucial test for Albert Einstein’s theory of general relativity. During approximately five minutes of totality, British astronomers photographed the star field behind the eclipsed Sun to try to detect the predicted bending of light. Their successful confirmation transformed Einstein into an international icon, and newspapers world...
Enhanced borohydride oxidation kinetics with Au@MOF-808 nanocomposite electroca...
Belhaj, Ines; Becker, J. Alexander; Viana, Alexandre M.; Gusmão, Filipe M.B.; Chaves, Miguel; Pereira, Eulália; Šljukić, Biljana; Balula, Salete S.The highly stable metal-organic framework (MOF) composed of [Zr6O4(μ3-OH)4(OH)6(H2O)6(BTC)2]·nH2O units (MOF-808) was modified by incorporating gold (Au) nanoparticles and functional groups to enhance electrocatalytic activity for the borohydride oxidation reaction (BOR). Three composite materials (Au@MOF-808, Au@MOF-808-NH2, and Au@MOF-808-SH) were prepared by the incorporation of Au in structurally related MO...
Electron Scattering from NO2
Lozano, Ana I.; García-Abenza, Adrián; Rosado, Jaime; Blanco, Francisco; Oller, Juan C.; Limão-Vieira, Paulo; García, GustavoTotal electron scattering cross sections (TCSs) for NO2 molecules have been measured with a magnetically confined electron beam transmission apparatus for impact energies ranging from 1 to 200 eV. The estimated total uncertainty limits are within ±5%. Moreover, integral elastic, ionization, electronic and rotational excitation cross sections in the (20–1000 eV) energy range have been calculated with our indepen...