53 research outputs found

    Access to administrative documents and to public sector information in Italy

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    Law No. 241 of 1990 on administrative procedure (Italian APA) established general rules on the right of access to administrative documents for the first time in the Italian legal system, which partly reproduced rules defined in sectorial legislations. From such very restrictive regime of access to administrative documents\u2014lately accompanied by a rather demagogical obligation imposed on public administrations to disclose a set of information in the context of the so-called open data policies\u2014Italy has recently moved forth to public access to data and documents held by public administrations

    From sea monsters to charismatic megafauna: changes in perception and use of large marine animals

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    Marine megafauna has always elicited contrasting feelings. In the past, large marine animals were often depicted as fantastic mythological creatures and dangerous monsters, while also arousing human curiosity. Marine megafauna has been a valuable resource to exploit, leading to the collapse of populations and local extinctions. In addition, some species have been perceived as competitors of fishers for marine resources and were often actively culled. Since the 1970s, there has been a change in the perception and use of megafauna. The growth of marine tourism, increasingly oriented towards the observation of wildlife, has driven a shift from extractive to non-extractive use, supporting the conservation of at least some species of marine megafauna. In this paper, we review and compare the changes in the perception and use of three megafaunal groups, cetaceans, elasmobranchs and groupers, with a special focus on European cultures. We highlight the main drivers and the timing of these changes, compare different taxonomic groups and species, and highlight the implications for management and conservation. One of the main drivers of the shift in perception, shared by all the three groups of megafauna, has been a general increase in curiosity towards wildlife, stimulated inter alia by documentaries (from the early 1970s onwards), and also promoted by easy access to scuba diving. At the same time, environmental campaigns have been developed to raise public awareness regarding marine wildlife, especially cetaceans, a process greatly facilitated by the rise of Internet and the World Wide Web. Currently, all the three groups (cetaceans, elasmobranchs and groupers) may represent valuable resources for ecotourism. Strikingly, the economic value of live specimens may exceed their value for human consumption. A further change in perception involving all the three groups is related to a growing understanding and appreciation of their key ecological role. The shift from extractive to non-extractive use has the potential for promoting species conservation and local economic growth. However, the change in use may not benefit the original stakeholders (e.g. fishers or whalers) and there may therefore be a case for providing compensation for disadvantaged stakeholders. Moreover, it is increasingly clear that even non-extractive use may have a negative impact on marine megafauna, therefore regulations are needed.SFRH/BPD/102494/2014, UID/MAR/04292/2019, IS1403info:eu-repo/semantics/publishedVersio

    Lifetime of a Natural Gas Storage Well Assessment of Well-Field Maintenance Cost

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    Gaz de France has been operating underground gas storage wells since more than 50 years. These wells have been drilled with the current available technologies in oil and gas industry. These technologies had improved a lot in the last decades (slurry compositions, drilling and cementing techniques, etc.) and the lifetime of a well therefore has to be estimated with reference to the techniques in use at the date it was built. These uncertainties and the inaccurate data of the oldest wells (drilling logs and casings specifications) led GDF to investigate the wells lifetime. Two approaches are presented here: - assessing a theoretical lifetime of a well; - calculating the average lifetime of each well using essentially corrosion scenarios and kinetics. Combining the two different approaches, one can better assess well aging and remaining well lifetime in order to schedule the best action (work-over, abandonment) at the proper time. A better knowledge of well's lifetime enables good control of underground storage operational expenditures (OPEX)

    Reflecting on the human dimensions of wild dolphin tourism in marine environment

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    Purpose – Many studies report on the potential ecological impacts of wild dolphin tourism, risks to people, and economic benefits to local communities. Fewer studies report the social aspects (human dimensions) of dolphin tourism, such as visitor satisfaction and attitudes of participants. This communication postulates that human dimensions are an important consideration in any strategy to keep wild dolphin tourism operations sustainable by balancing the welfare of the dolphins and the desires and expectations of tourists to interact with these charismatic, iconic creatures. Methodology – This communication synthesizes learning gained from a recent quantitative systematic literature review of marine wildlife tourism, a previously unreported review of wild dolphin tourism literature, and a recent study from the Dolphin Discovery Centre in Bunbury, Western Australia. Findings – Human attitudes towards marine mammals ultimately reflect how dolphin tourism is developed and managed. It is therefore important to understand how people experience and perceive dolphin tourism. Wild dolphin tourism is of great value to local economies, tour operators, and visitors who enjoy those experiences. The potential impacts that can arise from dolphin tourism need to be understood and minimised by actions under the control of tour operators and government authorities. This is important to make the satisfaction visitors gain from such experiences worthwhile and to ensure the long-term sustainability of wild dolphin tourism experiences. Originality of the research – Most wild dolphin tourism research has an ecological focus. This communication demonstrates that equally important social research, concerned with understanding visitor awareness, knowledge, expectations, and satisfaction, has a vital role to play in developing best practice management for wild dolphin tourism experiences

    Feeding wild fish for tourism-A systematic quantitative literature review of impacts and management

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    Feeding wildlife for the purpose of tourism is a contentious issue with for and against arguments being raised by tour operators, non-governmental organisations, researchers, and managers. Despite this situation, there is a growing trend in the feeding of marine wildlife to guarantee visitors an exciting up-close experience. This review investigates the scope and key findings of research conducted on the impacts and social aspects of tourism related wild fish feeding. This systematic quantitative literature review identified 58 peer-reviewed articles on feeding wild fish for tourism. Of those articles, 35 (60%) reported on ecological impacts on the fish. Only 14 articles explored fish feeding tourism from a social perspective, and of those only 9 (15%) investigated the perspectives of visitors. This review highlights that the impacts and management of complex human-wildlife interactions, such as feeding wild fish, are case and species specific. The impacts of feeding wild fish for tourism include changes in species distribution and behaviour, negative health effects, increased predation of some fish species, and risk of injury to tourists. There is less research on social aspects such as visitor attitudes and satisfaction with fish feeding operations. Further studies are required on visitor demand and interests, and the ecological implications of provisioning to ensure the scenarios in which fish feeding occur are sustainable, maximizing the tourism experience while minimizing negative impacts on fish populations. It is important that progress is made towards developing appropriate codes of conduct and nationally and internationally accredited standards of practice

    Filtration des fluides de forage Ă  travers les parois du puits - Bibliographie

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    Ce document résume un certain nombre de données déjà publiées, relatives à la filtration du fluide de forage, de l'annulaire vers les formations traversées, durant l'approfondissement du puits. On considère : - d'une part, les phénomènes de filtration : . le long des parois (filtration dynamique durant les périodes de circulation - filtration statique durant les arrêts), . sous l'outil ; - d'autre part, certaines de leurs conséquences, en particulier leur influence : . sur la vitesse d'avancement, . sur les risques de coincement de la garniture par pression différentielle, . sur l'envahissement des zones poreuses et perméables. Les phénomènes et leurs conséquences dépendent de très nombreux facteurs dont certains jouent des rôles d'importance très voisine. Leurs études nécessitent des moyens expérimentaux bien adaptés, permettant une simulation suffisamment rigoureuse des conditions de forage. Les résultats ne peuvent être généralisés et doivent être exprimés en fonction des paramètres opératoires choisis
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