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Delamination in carbon/epoxy plates drilling: tool and feed rate effect
Luís Miguel Pereira Durão; Daniel Gonçalves; João Manuel R.S. Tavares; António Aguiar Vieira; António Paulo Monteiro BaptistaThe attractive characteristics of carbon fibre reinforced plastics had widespread their use. In order to join different components, drilling is often necessary. It is known that a drilling process that reduces the drill thrust force can decrease the risk of delamination. In this work, three combinations of the drilling process are compared: tool diameter, tool geometry and feed rate. The parameters studied were...
Extracção Óptica de Relógio para Redes de Elevado Débito
Orlando Frazão; Pedro Tavares; António F. Cunha; L. Botelho Ribeiro; J. Ferreira da RochaThis article reports a modelling and experimental work on all-optical clock extraction for high bit-rate systems using self-pulsation mechanisms in semiconductor lasers at 1300 nm. External cavity DFB semiconductor lasers have been used, of both bulk and multiple quantum-well (MQW) types. ; Este artigo descreve um trabalho de modelização e realização pr...
So close, yet so far away? the effects of city size, density, and growth on loc...
Tavares, António F.; Carr, JeredRecent studies in the U.S. context have suggested that political participation is a function of the size and concentration of a city’s population. Most of this research focuses on the idea that there is an optimal size and concentration of population that favors active political participation in terms of a higher propensity to vote in local elections, contact local officials, and attend community meetings. The ...
Pre-restoration characterization of acoustical heritage of Nossa Senhora do Pil...
Menino Allan S. M. Peter Tavares; António P. O. Carvalho; S. Rajagopalan; Satish Jagannath Sharma; Ketak Nachinolkar; José LourençoThe church of Nossa Senhora do Pilar built in 1613 by the Spanish Franciscan Capuchos is part of the Convento do Pilar, Goa. This diminuted sanctuary church with Rococon Mannerist features underwent repairs wherein the original lime mortar mix on its laterite stone walls was replaced by cement plaster - paint coat and ceramic tiles. Besides triggering a salt attack, the replacement of original lime mortar cause...
Portuguese Catholic churches as reference acoustical models for heritage Cathol...
Menino Allan S. M. Peter Tavares; António P. O. CarvalhoThe architectural genres of the churches built in Goa (a Portuguese colony in India) during the 16th - 19th century period, are partial derivatives of the Portuguese style considering the affinity of the latter’s architecture and worship ambience with that of the Goan churches. Therefore reference ranges used for the normalization of the measured objective acoustical parameters in the Goan Catholic church...
Municipal service delivery : the role of transaction costs in the choice betwee...
Rodrigues, Miguel; Tavares, António F.; Araújo, Joaquim FilipeService provision by local governments can be delivered using in-house bureaucracies, private firms, and partnerships with other governments or the not-for-profit sector. This production decision has been a major focus of discussion among scholars, practitioners and political agents for the last quarter of a century. The transaction costs framework is an important tool to analyse decisions regarding the product...
The economic and political impacts of top-down territorial reforms: the case of...
Tavares, António F.; Rodrigues, Miguel; Magalhães, Catarina; Carr, JeredThe crisis of the sovereign debt forced the Portuguese government to reach out for joint financial help from the International Monetary Fund, the European Union and the European Central Bank. The Memorandum of Understanding (MoU) stresses the need for a major redefinition of the Portuguese local government system. Currently, the Portuguese local government is structured in two tiers (308 municipalities and 4259...
Municipal service delivery: the role of transaction costs in the choice between...
Rodrigues, Miguel; Tavares, António F.; Araújo, J. FilipeService provision by local governments can be delivered using in-house bureaucracies, private firms, and partnerships with other governments or the not-for-profit sector. This production decision has been a major focus of discussion among scholars, practitioners and political agents for the last quarter of a century. The transaction costs framework is an important tool to analyse decisions regarding the product...
The economic and political impacts of top-down territorial reforms: the case of...
Tavares, António F.; Rodrigues, Miguel; Magalhães, Catarina; Carr, JeredThe crisis of the sovereign debt forced the Portuguese government to reach out for joint financial help from the International Monetary Fund, the European Union and the European Central Bank. The Memorandum of Understanding (MoU) stresses the need for a major redefinition of the Portuguese local government system. Currently, the Portuguese local government is structured in two tiers (308 municipalities and 4259...
Mota-Engil: A solution to turnover its negative stock market performance
Tavares, António Maria Sousa de Macedo GalianoA Work Project, presented as part of the requirements for the Award of a Masters Degree in Finance from the NOVA – School of Business and Economics ; This project started as an M&A Field Lab, where students are challenged to advise the selected company (Mota-Engil) on typical M&A proposal from an investment bank perspective. However, during the Field Lab path, the source of information to university students p...
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