511 research outputs found
Pace O., Buccione R., Punturo R., Zummo F. Rizzo G. 2023. Mineralogical and petrographic characterization of fibrous amphiboles in the blueschists of the Diamante-Terranova Unit (Calabrian-Peloritan Orogen, southern Italy). Congresso congiunto SIMP-SGI-SOGEI-AIV “The Geoscience paradigm: resources, risk and future perspectives”, 19-21 Settembre 2023, Potenza.
No full textCisullo C., Zummo F., Buccione R., Paternoster M. & Mongelli G. 2023. Distribution of chemical and physical parameters of the water column of Lago Piccolo, Mount Vulture hydro-mineral basin (southern Italy). Congresso congiunto SIMP-SGI-SOGEI-AIV “The Geoscience paradigm: resources, risk and future perspectives”, 19-21 Settembre 2023, Potenza.
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“The war is over”. Militarizing the language and framing the Nation in post-Brexit discourse
No full textThis chapter analyzes the militarization of political language in digital contexts in the post-Brexit discourse, and how such militarization, which is often constitutive of hate speech, contributes to framing an “exclusive” concept of the nation whose meaning is reproduced and circulated (as well as challenged) in society. It will address the role of emotions and hate in language in fueling and aggregating online communities around a key political issue, i.e. the Brexit negotiations, and a core cultural and social concept, i.e. the nation. The militarization of language, which is based on certain discursive structures, e.g. war metaphors (Lakoff and Johnson 1980, Musolff 2020), is one of the linguistic strategies used by political groups to convey symbolic and material forms of action in signifying practices (i.e. hate and violence) and to accelerate the legitimation of emotive/ideological reception of the values (Pascale 2019). This is particularly evident in the social network environment, which promotes aggressive and denigratory exchanges legitimizing assumptions, narratives and ideologies in over-emotional claims/response (Breeze 2020; Demata 2019, 2020; KhosraviNik 2018: KhosraviNik & Esposito 2018; Musolff 2018; Zummo 2018). During and after the Brexit debate, the identitarian values associated with the nation have prompted British populist politicians and a sizeable share of the public opinion to support an “exclusive” idea of the nation, based on ethnocentric values which marginalised the “Other” (Wodak et al. 2009). This was often done in verbally violent forms, which discriminated certain individuals (e.g. migrants, European citizens) and excluded them from the nation and is part of a wider process prompted by right-wing populist politics (Wodak 2015).
The chapter will specifically focus on Nigel Farage's tweet on 24 December 2020 in which he declares that “The war is over” (https://twitter.com/Nigel_Farage/status/1342056303661879297) to celebrate PM Johnson's Brexit trade deal. As in other circumstances, the prominent populist and nationalist politician's words caught the attention of many (offline and online) individuals who struggled to understand whether the 'war' was referred to the EU and the UK trade negotiations, to the EU and the UK ideological positions, or to the big European establishment and the British people. For certain, in only a week since its publication the tweet received 2.522 retweets and 12.287 likes, was cited in 860 tweets, and attracted a growing thread of comments by people who embraced or rejected the ideological value of such claim. Since social media is considered as one of the most prominent way to construct political identities and negotiate political values (Demata 2018, 2019; Zummo 2019, 2020), this chapter analyses the ideological value of the claim and interrogates the corpus of the users' comments, addressing the performative quality of digital political discourse, which takes into account the personalization of politics and the contestation, gamification and derision of/in antagonistic (polarized) exchanges. Data is analyzed with a critical discourse approach informed by Wodak's framework that requires the understanding of the reciprocal relationship between the communicative structure of an event and the situation, institution, and social structure that frame it (Fairclough and Wodak 1997), and Van Dijk's consideration for which “critical-political discourse analysis deals especially with the reproduction of political power, power abuse or domination through political discourse, including the various forms of resistance or counter-power against such forms of discursive dominance” (1997: 11). Results highlight how certain (national) values are conveyed and, more generally, how specific linguistic aspects are used to sustain ideologies and support (or reject) particular messages, e.g. to frame ‘national’ meanings
Heat transfer and pressure drops in micro-tubes for ground and space applications
No full textThe aim of the research is to compare and understand the bubble dynamics, heat transfer mechanism and pressure drops in subcooled flow boiling, at both, microgravity and normal gravity conditions. Nowadays, there are few studies on this topic, nevertheless the possible applications are many, from the spatial usage to microelectronics cooling. Micro-exchangers are the next generation of cooling systems useful for both terrestrial and space applications where weight and dimensions are important. Flow boiling is the best way to reach high heat fluxes. Micro-tubes, thanks to their dimension, can be used in a wide range of microgravity systems i.e. satellites for communications, thermal management for the International Space Station, cooling of hi-power electronic devices, nuclear space reactors, etc. To develop and design thermal systems for small applications, it is necessary to achieve a detailed understanding of all flow boiling aspects, also under low gravity conditions, at low pressure and at high thermal fluxes. A deepen analysis of available correlations in the literature has been performed and a comprehensive comparison with experimental data provided by two ENEA facilities (MICROBO and BOEMIA) has been carried out. The analysis considers 17 micro-channel correlations, 5 macro-channels and 2 models to calculate heat transfer. Instead, 5 correlations were chosen to calculate saturated boiling pressure drops and 3 for subcooled boiling. As most of data are in subcooled boiling, its effect on prediction is discussed and a model is proposed to calculate vapor quality in the channel. Moreover, a new methodology to calculate pressure drops has been developed and discussed
Linguistic Aspects in Web Counselling
No full textThe global net system has provided new and expanded means of communication incorporating all forms of discourse, including medical interaction. However, due to the tentative nature of medical discourse, online relations between professionals and their patients still encounter limitations.
Standard procedures between the doctor and patient allowed the doctor to assume an authoritative role as his position provided personal remedy or advice to the patient at hand. Consequently, he was relied upon to solve the initial complaint, and this capacity rendered the patient as the dependent party. The responsibility of this exchange was to counsel, and the doctor was therefore required to use accessible language. This has been termed by Crawford et.al (2006) as Brief-Ordinary-Effective.
Nowadays it is possible to obtain medical advice online. Websites providing this service offer brief responses to patient questions but the nature of the consultation may no longer be classed as simulated dialogue and has to be considered as a separate genre. It is centred on the health inquiries, dealt with by an online medical counsellor whose role is to offer solutions and advice. The interaction is a written one yet it often reflects the conversational traits of oral discourse. The asynchronic written dimension inevitably has no hold on the response of the patient. The sites have participants, which fall into three groups, each of which has a different role. The web counsellors are required to be medical professionals qualified to provide advice. The readers make up the second and third groups respectively, as potential non-specialists who actively contribute to the dialogue, and passive readers who don't respond to the discussion but read the medical content for the purposes of their own self-diagnosis.
Usually, doctor-patient consultation takes place in person in a medical environment. Such interactions are typically comprised of a sequence of linguistic and prosodic events and behaviours. In online forums, on the other hand, there is no room for such responses; most pages give a number of words or type-spaces in which users must summarize their question. Therefore most comment entries contain systematic and well-defined accounts in which the emotive burden is restricted to a few sentences. It can be said that such exchanges are ‘controlled’: sometimes the patient’s personal history is substituted by the detailed exposition of clinical analyses or even the clinical chart, or it comes with extra information. The user must adequately explain their query to receive the most relevant response. For both personal and online consultation, the patient's first stage is the explanation of their illness, followed by an inquiry as to its cause, and finally requesting the necessary treatment
Flow boiling heat transfer and two-phase flow in microgravity
No full textFlow boiling heat transfer can provide high heat transfer rates due to latent heat transportation. Its possible use is therefore potentially important to reduce size and weight of cooling systems in space platforms and satellites. A comprehensive knowledge is also important for the safe operation of existing single-phase systems in case of accidental increase of heat generation rate. For space applications and appropriate design of components accommodating flow boiling heat transfer, it is important to understand the influence of microgravity conditions on forced convective boiling heat transfer. The number of existing researches on flow boiling in reduced gravity is very small due to large heat loads required and reduced available room in a 0-g apparatus for experiments, as well as complexity of the experimental facility for microgravity environment. This lecture will summarize the results of the few research carried out on flow boiling heat transfer in microgravity, discussing flow pattern, heat transfer coefficient, critical heat flux, with a particular emphasis to the recent experiments carried out at ENEA. The experiments were carried out at low gravity during the ESA (European Space Agency) parabolic flights campaign of November 2013. The paper will show the analysis of differences between flow patterns and vapour bubble parameters at normal and at zero gravity
CD1a immunopositivity could help to address prognosis of intestinal-type Barrett's metaplasia
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