Percorrer por autor "Carvalho, Raquel"
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- As alterações ao regime de invalidade dos contratos no Código dos Contratos PúblicosPublication . Carvalho, Raquel
- Artigo 5.º: prescriçãoPublication . Carvalho, Raquel
- Artigo 7.º: responsabilidade exclusiva do estado e demais pessoas coletivas de direito públicoPublication . Carvalho, Raquel; Medeiros, Rui; Martins, Patrícia Fragoso; Almeida, Mário Aroso de
- Artigo 8.º: responsabilidade solidária em caso de dolo ou culpa gravePublication . Carvalho, Raquel
- Blockchain and public procurementPublication . Carvalho, RaquelPublic procurement relies in an apparent irreconcilability between competition, which implies some confidentiality, and transparency. The latest Public Procurement Directives have made e-procurement a mandatory feature. Since blockchain technology has been developed and designed to accomplish integrity, transparency, efficiency and data accuracy, goals which are very much appreciated in public procurement, an interesting question then arises: is there room to apply this technology within public procurement procedures? Will smart contracts be an interesting tool within public procurement? Considering public duties such as data protection, which must be complied with by contracting authorities, and some blockchain features such as non-withdrawable information and the likely broad access to the information there enclosed, one can be drawn to conclude that there is no possible conciliation between these two procedures. The mandatory e-procurement implies some neighbouring problems with this technology. Yet, are there any technological solutions for some of the drawbacks?
- Citizens’ deliberation on solutions to fight urban household food waste and nexus with growing urban gardens: the case of Porto metropolitan area in PortugalPublication . Ribeiro, Alexandra; Madureira, Lívia; Carvalho, RaquelFood waste is currently acknowledged as a major societal challenge, including the food waste at the household level estimated to be responsible for the wastage of one third of the food produced for human consumption. Hence, tackling household food waste (HFW) is gaining a momentum in societal and policy agendas accompanied by an increasing effort of the scientific community to deliver evidence to address the research gaps on the causes and on the solutions to address this multidimensional societal problem. The proposed solutions by published literature to mitigate HFW can be unfolded into four major types, actions to raise people awareness, participatory actions, economic incentives, and collective actions. However, there is little evidence on the household's assessment of the different types of actions and its combination. This paper contributes to this research gap by adopting an innovative participatory approach, using deliberative focus groups (DFG), and analyzing the collected data through content analysis resorting to the software Maxqda. We had conducted six DGF in the Porto metropolitan area before and during the pandemic COVID-19 crisis. Our results highlight the citizen's option for more holistic actions in comparison to separate actions as a way to effectively fight food waste at household level. Another finding of our study is that citizen's growing urban gardens found it the more effective way to reduce household food waste. These results suggest that urban policies and underlying legal frameworks should favor holistic solutions to incentivise fighting HFW and account for the urban gardens as a relevant part of the solution. In addition, the study has shown that qualitative deliberative citizen-led approaches show insightful to understand how common people perceive as alternative or complementary the different types of actions to fight HFW proposed by the literature review.
- Climate change, urban planning and environmental migrantsPublication . Carvalho, RaquelClimate change has emerged as a key driver of contemporary migratory movements, alongside traditional causes such as conflict, political persecution, and economic hardship. Unlike war-related or economic migration, climate-induced displacement is typically largescale, involuntary, and permanent. Environmental migrants are often compelled to abandon their territories due to extreme drought, desertification, flooding, and climate-related diseases, with many relocating to urban centres already facing significant infrastructural and environmental pressures. The arrival of these populations exacerbates existing vulnerabilities, including the urban heat island effect, soil sealing, loss of biodiversity, and the overburdening of essential services such as healthcare, housing, food supply, and waste management. Furthermore, integrating culturally diverse, non-autochthonous groups poses additional challenges for social cohesion and governance. Methodologically, this paper is grounded in a theoretical framework and a systematic review of the relevant literature. By explicitly combining the themes of environmental migration, climate change, and urban planning, this study offers a novel perspective, highlighting the urgent need for anticipatory, inclusive, and solidarity-based urban planning aligned with Sustainable Development Goal (SDG) 11, integrating migration risk mapping to ensure sustainable and just urban development.