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Quit playing games with our lives: layoffs predict road traffic fatalities

Gruda, Dritjon; Gonçalves, Ricardo; Zadegan, Milad Sharafi

Economic downturns are typically associated with fewer traffic accidents due to reduced driving. However, the psychological and social shocks of sudden job loss may counterintuitively increase risk on the road. In this paper, we examine whether mass layoffs announcements are associated with short-term increases in traffic fatalities in the United States using spatial autoregressive models. Merging monthly U.S. ...


Measuring drug policy evolution: a cross-country analysis

Gonçalves, Ricardo; Lourenço. Ana; Marreiros, Helia

Drug policies significantly impact public health and criminal justice outcomes, yet quantitative tools for systematically comparing approaches across jurisdictions remain limited. This paper uses a state-of-the-art comparative law method – leximetrics – to construct the Illicit Drugs Policy Indexes (IDPI), a valuable resource for assessing the evolution of drug policies over time within a specific country as we...


ADAPTIVE LEARNING IN VISUAL ARTS SYLLABUS: A PRACTICAL ANALYSIS

Gonçalves, Ricardo; Lopes, Susana; Eanes, Geraldo

The Visual Arts and Artistic Technologies programme values adaptive learning, providing educational content that meets students' needs. One of the main pedagogical strategies adopted is the project work methodology, focused on structuring creative thinking and solving pedagogical, technological and artistic challenges presented in the different Curricular Units (CU). In this context, the Ceramics Workshop and P...


The impact of open innovation on the environmental sustainability practices and...

Gonçalves, Ricardo; Vlačić, Božidar; González-Loureiro, Miguel; Sousa, Rui

Amid growing environmental concerns and increasing customer demand for environmental sustainability practices (ESP), international firms strive to develop ESP and leverage resources across their global networks as key players in global innovation systems. In this context, we investigate whether adopting an open innovation (OI) strategy is a viable solution to meet the demand for ESP and foster internationalizat...


Revenue implications of choosing discrete bid levels in a Japanese-English auction

Gonçalves, Ricardo; Ray, Indrajit

We consider the set-up of a Japanese-English auction with exogenously fixed discrete bid levels for a specific game (the wallet game with two bidders, following Goncalves and Ray in Econ Lett 159:177-179, 2017). We show that in this auction, partition equilibria exist that may be separating or pooling. We illustrate separating and pooling equilibria in games with two and three discrete bid levels and compare th...


The carbon tax and the crisis in Australia’s National Electricity Market

Gonçalves, Ricardo; Menezes, Flávio

Australia faced a severe energy crisis in 2022, which prompted the Australian Energy Market Operator to halt in National Electricity Market operations from June 15 to June 24. In this study, which examines half-hourly data from Australia’s National Electricity Market between 2010 and 2016, we aim to demonstrate the notable and intended consequences of the carbon tax, which was enacted in 2012 and repealed in 20...


Natural pigments recovery from food by-products: health benefits towards the fo...

Magalhães, Daniela; Gonçalves, Ricardo; Rodrigues, Cristina V.; Rocha, Helena R.; Pintado, Manuela; Coelho, Marta C.

Given the health risks associated with synthetic colorants, natural pigments have emerged as a promising alternative. These renewable choices not only provide health benefits but also offer valuable technical and sensory properties to food systems. The effective application of natural colorants, however, requires the optimization of processing conditions, exploration of new sources, and development of novel for...



ONE BLOW

Silva, António; Gonçalves, Ricardo

This work is based on an observation in context that analyzed processes, actions, products, in a direct interaction by the authors, as peers in the attendace of the Blown Glass Production Techniques Course, at the Professional Training Center for the Ceramics Industry, Marinha Grande . Assuming that research in art based on practice has contact with a specific context as a fundamental prerequisite, the dynamics...


Governance of new product design: the influence of national institutions

Freitas, Isabel Maria Bodas; Gonçalves, Ricardo; Sousa, Rui

This paper builds on institutional economics theory to analyze whether and how the institutional environment shapes the micro-level governance decisions related to innovation activities. Specifically, we suggest that the extent of co-creation with value-chain partners in new product design – a relational form of governance – is influenced by the institutional setting of the focal firm. Empirically, we rely on d...


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