È possibile rivalutare l’attenzione di Popper verso i presocratici in un quadro interpretativo più ampio rispetto a quanto sostenuto finora? Il lavoro propone una generale riconsiderazione del tema principalmente attraverso lo studio delle fonti utilizzate nella lettura di Parmenide e degli altri presocratici, con l’intento di evidenziarne i legami con il contesto generale della filosofia popperiana.

Cyber warfare differs from traditional forms of conflicts, both in the instruments used—computers—and in the environment in which it is conducted—the virtual world of the internet and other data communication networks.The purpose of the commentary is to discuss whether, even in cyber warfare, the concept of ‘direct participation in hostilities’ is still operative, with special reference to the laws related to it, and to assess its consequences with regard to the law of armed conflict. In particular, I will consider whether (...) in cyber warfare the distinction between lawful combatant and unprivileged combatant is still valid. Standing on the premises that this distinction does not apply to non-military combatants in the cyber domain and that any civilian who is taking part in cyber warfare takes direct part in the hostilities as an unlawful cyber combatant, this commentary dwells on the concept of continuous combat function and applies it to cyber combatants. This will offer the ground to .. (shrink)

The frame of risk and protection factors in relation to the social and educational adaptation of unaccompanied foreign minors is very complex. This qualitative Systematic Review aims to analyze the most recent scientific research on psychological, educational and social variables that can contribute to adaptation, in order to outline the factors on which to work in order to structure intervention strategies as well as to structure life projects in line with the evidence. The literature search conducted identified 11 empirical studies. (...) The results highlighted specific risk and protection factors, contextual and individual related to the adaptation of unaccompanied foreign minors. In addition to discussing the practical implications of the studies in line with development models, the methodological limitations found in the studies are also highlighted and future perspectives indicated. (shrink)

This study investigates the role of parental and peer relationships’ quality on homophobic victimization and possible consequences on mental health during adolescence. Participants were 394 adolescents, (41.6% male and 58.4 % female) aged 15-20 years (M = 16.55; SD =.85), attending the third and fourth classes of public high schools in Italy. Participants completed the Homophobic Bullying Scale to evaluate homophobic victimization toward gays and lesbians or assumed homosexuals, the Symptom Check-list-90 to evaluate mental health, and the Inventory of Parent (...) and Peer Attachment to investigate quality of peer and parental relationships (in term of communication, disaffection and trust). Results show how quality of peer relationships is not connected with victimization, as well as quality of parental relationships is linked with homophobic victimization, that is also connected with anxiety and somatization problems. Theoretical and educational implications were discussed. (shrink)

Some studies highlighted that patients with narcolepsy type-1 experience high lucid dream frequency, and this phenomenon has been associated with a creative personality. Starting from the well-known “pandemic effect” on sleep and dreaming, we presented a picture of dream activity in pharmacologically treated NT1 patients during the Italian lockdown. Forty-three NT1 patients completed a web-survey during Spring 2021 and were compared with 86 matched-controls. Statistical comparisons revealed that: NT1 patients showed greater sleepiness than controls; controls showed higher sleep disturbances than (...) NT1 patients, and this result disappeared when the medication effect in NT1 was controlled; NT1 patients reported higher lucid dream frequency than controls. Focusing on dreaming in NT1 patients, we found that nightmare frequency was correlated with female gender, longer sleep duration, higher intrasleep wakefulness; dream recall, nightmare and lucid dream frequency were positively correlated with sleepiness. Comparisons between low and high NT1 lucid dreamers showed that patients more frequently experiencing lucid dreams reported a greater influence of dreaming during wakefulness, especially concerning problem-solving and creativity. Overall, our results are consistent with previous studies on pandemic dreaming carried out on healthy subjects. Moreover, we confirmed a link between lucidity and creativity in NT1 patients. Considering the small sample size and the cross-sectional design, our findings cannot provide a causal relationship between lucid dreams and the COVID-19 lockdown. Nevertheless, they represent a first contribution to address future studies on this issue, suggesting that some stable characteristics could interact with changes provoked by the pandemic. (shrink)

In recent literature there is unanimous agreement about children's pragmatic competence in drawing scalar implicatures about some , if the task is made easy enough. However, children accept infelicitous some sentences more often than adults do. In general their acceptance is assumed to be synonymous with a logical interpretation of some as a quantifier. But in our view an overlap with some as a determiner in under-informative sentences cannot be ruled out, given the ambiguity of the experimental instructions and the (...) attitude of trust by children in adults. Our study investigated this hypothesis with different experimental manipulations. We found that when the experimenter's intentions are clear (Experiment 1, all / some order effect; Experiments 2 and 4, conditions 2 and 3), under-informative sentences are usually rejected; otherwise (Experiment 1, some / all order effect; Experiments 3 and 4, control condition) they are accepted. However, analysis of verbal protocols indicated that pragmatically infelicitous sentences are accepted, with some interpreted mostly as a determiner, irrespective of the function of some as a quantifier. Acceptance is not in itself synonymous with a logical interpretation of some as a quantifier. (shrink)

We establish that the isomorphism problem for the classes of computable nilpotent rings, distributive lattices, nilpotent groups, and nilpotent semigroups is \-complete, which is as complicated as possible. The method we use is based on uniform effective interpretations of computable binary relations into computable structures from the corresponding algebraic classes.

The psychopathological analysis of hysteria is a victim of narrow conceptualizations. Among these is the inscription of hysteria in the feminine sphere, about body and sexuality, which incentivized conceptual reductionism. Hysteria has been mainly considered a gendered pathology, almost exclusively female, and it has been associated with cultural and/or religious features over time rather than treated as a psychopathological world. Further, hysteria has been dominated by conceptual inaccuracies and indecision, not only in terms of clinical features but also in terms (...) of its definition. For this reason, it seems necessary to “undress” hysteria from this feminization, sexualization, and corporealization with which it has been abundantly clothed over the years. “Undressing” hysteria will make possible a reconfiguring and deconstructing of the explanatory-causal model of Charcot and Freud. However, if we take out this cultural heritage, the stigma accompanying this diagnosis, and the weight of the enormous historical tradition that hysteria carries, the world of hysteria continues to constitute a domain full of complexity and nosographic challenges. Hysteria has been considered a sum of psychological behaviors and states illustrated by drama, mystery, or falsity. The difficulty in understanding the multiple somatic manifestations which characterize this clinical condition created several controversies and much confusion. In the current nosography, the personological component of hysteria has been separated from its symptomatic manifestation, in the Histrionic Personality Disorder and Conversion Disorder categories, respectively. This segmentation by descriptive nosography does contribute to a unitary understanding of the phenomenon and, consequently, of daily clinical practice. Clinical complexity can be grasped and deciphered only if the symptom is inscribed in the patient’s lifeworld and his/her subjective life history. Clinical practice is thus thought of in terms of a structural aggregation of a homogeneous set of phenomena, together constituting a specific way of being in the world. The starting point of this article is the evident modalities characterizing this life-world, taking care not to confuse the point of origin with the point of expression. (shrink)

Let ???? be a computable structure and let R be a new relation on its domain. We establish a necessary and sufficient condition for the existence of a copy ℬ of ???? in which the image of R (¬R, resp.) is simple (immune, resp.) relative to ℬ. We also establish, under certain effectiveness conditions on ???? and R, a necessary and sufficient condition for the existence of a computable copy ℬ of ???? in which the image of R (¬R, resp.) (...) is simple (immune, resp.). (shrink)

The objective of this article is to illustrate the issues and challenges which the higher education system in Bulgaria faces, with a particular accent on the phenomenon “education per kilogram”. The latter describes, in a popular language, the up-scaling of the university graduation, related to the mass proliferation of the higher education institutions, the facilitated access to enrolment through paid tuitions, etc. The big quantity of HEIs in the country is in a mismatch with the low percentage of GDP which (...) the government dedicates to education. The number of HEIs is also disproportionate against its population size - 54 HEIs in Bulgaria for population of 7.2 million. The research methodology includes a desktop study based on national statistical data and data from the governmentally-supported university rating system. An empirical survey, conducted among 250 tertiary education students enrolled in four Bulgarian universities, is a valuable contribution towards disclosing the pros and cons of the teaching practices in the tertiary education in the country. The first chapter describes at large the “education per kilogram” issue with regard to its possible origins, variations and consequences for the misbalance of labour market demand for certain qualifications and the universities supplies of qualified individuals. The second chapter reveals a comparative analysis by professional fields possible through the Ministry of Education and Science’s university rating system, i.e. students’ preferences for disciplines, universities and professions; the graduates’ professional fulfilment and how the income of the recent diploma-holders is a function of attending a particular HEI. The third chapter presents a sociological survey conducted among students in four Bulgarian universities which demonstrates learners’ attitudes towards various aspects of training, teaching methods and involvement in research assignments in the context of tertiary education. The main conclusion of the article is that the “universities per kilogram” trend brought about other corresponding characteristics, such as “students per kilogram”, “academic titles per kilogram”, etc. Hence, the large number of HEIs in Bulgaria has not led to improving the quality and efficiency of education, and yet does not respond adequately to the changing labour market demands for qualified professionals. (shrink)

We construct a computable vector space with the trivial computable automorphism group, but with the dependence relations as complicated as possible, measured by their Turing degrees. As a corollary, we answer a question asked by A.S. Morozov in [Rigid constructive modules, Algebra and Logic, 28 570–583 ; 379–387 ].

The most complete edition yet published of Wittgenstein’s1929 lecture includes a never-before published first draft andmakes fresh claims for its significance in Wittgenstein’soeuvre. The first available print publication of all known drafts ofWittgenstein’s Lecture on Ethics Includes a previously unrecognized first draft of the lectureand new transcriptions of all drafts Transcriptions preserve the philosopher’s emendationsthus showing the development of the ideas in the lecture Proposes a different draft as the version read by Wittgensteinin his 1929 lecture Includes introductory essays on (...) the origins of the material andon its meaning, content, and importance. (shrink)

Primary headaches are highly prevalent and represent a major cause of disability in young adults. Neurofeedback is increasingly used in the treatment of chronic pain; however, there are few studies investigating its efficacy in patients with headaches. We report the results of a cross-over sham-controlled study on the efficacy of neurofeedback in the prophylactic treatment of tension-type headache. Participants received ten sessions of infra-low frequency electroencephalographic neurofeedback and ten sessions of sham-neurofeedback, with the order of treatments being randomized. The study (...) also included a basic psychotherapeutic intervention — a psychoeducational session performed before the main study phases and emotional support provided throughout the study period. The headache probability was modeled as a function of the neurofeedback and sham-neurofeedback sessions performed to date. As a result, we revealed a strong beneficial effect of neurofeedback and no influence of the sham sessions. The study supports the prophylactic use of infra-low frequency neurofeedback in patients with TTH. From a methodological point of view, we advocate for the explicit inclusion of psychotherapeutic components in neurofeedback study protocols. (shrink)

BackgroundEvidence suggests that organizational models that provide care interventions including patient support programs may increase patient adherence to multiple sclerosis therapies by providing tailored symptom management, informational support, psychological and/or social support, lifestyle changes, emotional adjustment, health education, and tailored coaching, thus improving patients' overall quality of life across the disease course.ObjectiveThe main objective of this study was to describe MS patients' self-reported experience of a nurse-led, telephone-based PSP and to explore its potential role in improving disease and therapy management (...) skills.MethodsSurvey data were analyzed from a subset of patients relapsing–remitting MS using interferon beta-1a already registered in the adveva® PSP from three Italian multiple sclerosis centers with a consolidated experience in RRMS disease, treatment management, and PSP programs.ResultsIn total, 244 patient data at baseline were analyzed, of which 115 had a follow-up of at least 6 months. Results from this study provide an early view into the role of this PSP in improving the patients reported overall experience regarding disease management and injectable therapy, thus potentially ameliorating treatment adherence and decreasing health care cost. Moreover, study findings confirm the role of providing a patient-focused support by addressing non-medication-related topics in the PSP consultations. Indeed, patients involved in the adveva® PSP program reported a better psychological status in the follow up as demonstrated by an increased optimism regarding their future, tolerance of disease uncertainty, and their perceived ability to benefit from external help and social support.ConclusionsAs such, it is reasonable to conclude that the involvement in the adveva® PSP and the PSP's assistance in guiding patients on proper treatment self-management techniques is of great value to patients as it might contribute to improving engagement in their health care journey in terms of perceived self-care skills, emotional coping toward the future and the unpredictability of the disease course and their general attitudes toward the injection itself, involving pain tolerance. (shrink)

Quelle est la place du scepticisme dans l'œuvre d'un philosophe des Lumières comme Denis Diderot? Cet ouvrage vise à mettre en évidence les caractéristiques de la réception des instances sceptiques dans les œuvres de Diderot. L'analyse prend en considération l'ensemble du corpus diderotien, y compris sa contribution à l'Encyclopédie. L'objectif est aussi de montrer que la méthode sceptique de Diderot, qui consiste en l'usage de certaines argumentations, mais aussi en un ensemble de choix stylistiques, permet de mieux interpréter certaines spécificités (...) de sa pensée philosophique et de son matérialisme. Une meilleure compréhension du rôle du scepticisme dans la pensée de Diderot vise à apporter une contribution aux études sur ce qu'on définit comme le scepticisme des Lumières, en montrant qu'il serait plus exact de parler de scepticismes au pluriel, en raison des différences qui subsistent parmi les philosophes. Pour cette raison, ce livre propose des confrontations entre Diderot et ses sources sceptiques, mais aussi avec d'autres philosophes de son époque comme Montesquieu, Voltaire, D'Alembert et Hume"--Page 4 of cover. (shrink)

Les débats sur la technique voient s'affronter souvent des positions tranchées entre technophiles et technophobes. On avancerait sans doute en déplaçant la question de la valeur et des dangers des artefacts techniques vers une réflexion philosophique plus profonde sur la technicisation de la vie et du monde, qui mérite généalogie et archéologie. Cet ouvrage, qui réunit plusieurs philosophes réputés de la question, veut à cet égard convoquer au débat les pensées de Martin Heidegger et de Michel Foucault qui ont permis (...) à travers leurs usages de la terminologie du Gestell et du dispositif de renouveler la question de la technique. Même si M. Foucault a été marqué par les analyses heideggériennes, il s'agit d'aller bien au-delà de la question des influences. Les langues d'appartenance de ces termes, leurs traductions deviennent aussi l'occasion d'explorer à nouveaux frais la complexité de la question. (shrink)

Aujourd’hui, il n’est pas possible de vivre autrement que par conspiration. Mais, aujourd’hui, il n’est pas non plus possible de vivre par complot. Pour vivre maintenant, pour créer des modes de vie, des formes de vie, nous devons chercher une conspiration sans complot, une conspiration qui soit sa propre fin, une conspiration qui soit en vue d’elle-même. Cet article déplie quelques implications de cette proposition, à travers les notions de sous-communs, d’étude, de police, de soin et de complicité.

Cet article questionne la situation de la littérature au temps de la mondialisation. Le désir du sinologue François Jullien de découvrir s’il y a encore la possibilité d’établir un dialogue entre les cultures — pas en termes d’identité, mais d’écart et de fécondité culturelle — a suscité ma curiosité. Comment la littérature et l’imaginaire des lecteurs sont-ils en train de se modifier? Notre terrain d’observation privilégié sera celui de ce que nous appellerons l’écriture migrante, lorsque les écrivains immigrés utilisent la (...) langue du pays d’accueil pour écrire leurs histoires. Ce sujet, à son tour, conduit aux questions du canon littéraire, de l’intertextualité et de l’interprétation comme base lexicale pour la réécriture d’un nouveau réseau de mots-clés de la littérature, à l’époque de la postmodernité. The main aspect of this article concerns the situation of literature in the time of globalization. We have organized this work on the base of François Jullien’s theory about the possibility to establish a cultural dialogue, not in terms of identity, but in terms of difference and cultural fecundity. How literature and the reader’s imaginary are changing? In order to extend this research we have also considered the problem of the migrant writing: a kind of writing realized by migrant writers, who use the language of the host country in their stories. An issue that puts in evidence other problems, such as the discussion about literary canon, the subjects of interpretation and intertextuality in terms of innovative keywords to reflect on the postmodern literature. (shrink)

R. Shore proved that every recursively enumerable set can be split into two nowhere simple sets. Splitting theorems play an important role in recursion theory since they provide information about the lattice ϵ of all r. e. sets. Nowhere simple sets were further studied by D. Miller and J. Remmel, and we generalize some of their results. We characterize r. e. sets which can be split into two effectively nowhere simple sets, and r. e. sets which can be split into (...) two r. e. non-nowhere simple sets. We show that every r. e. set is either the disjoint union of two effectively nowhere simple sets or two noneffectively nowhere simple sets. We characterize r. e. sets whose every nontrivial splitting is into nowhere simple sets, and r. e. sets whose every nontrivial splitting is into effectively nowhere simple sets. R. Shore proved that for every effectively nowhere simple set A, the lattice L* is effectively isomorphic to ϵ*, and that there is a nowhere simple set A such that L* is not effectively isomorphic to ϵ*. We prove that every nonzero r. e. Turing degree contains a noneffectively nowhere simple set A with the lattice L* effectively isomorphic to ϵ*. (shrink)

A Turing degree d is homogeneous bounding if every complete decidable (CD) theory has a d-decidable homogeneous model A, i.e., the elementary diagram De (A) has degree d. It follows from results of Macintyre and Marker that every PA degree (i.e., every degree of a complete extension of Peano Arithmetic) is homogeneous bounding. We prove that in fact a degree is homogeneous bounding if and only if it is a PA degree. We do this by showing that there is a (...) single CD theory T such that every homogeneous model of T has a PA degree. (shrink)

Este artículo sintetiza algunos aspectos del proyecto “Hierro y bronce. Criterios para la valoración y conservación de la herrería artística en el patrimonio arquitectónico del Uruguay”[i], cuyo objetivo es establecer los atributos patrimoniales de los elementos ornamentales metálicos asociados a fachadas del patrimonio arquitectónico nacional y contribuir a su difusión, puesta en valor y conservación. A lo largo de la investigación se abordan los aspectos socioculturales, artísticos, formales, técnicos y, por último, los relativos al deterioro de estos elementos y las (...) pautas para su preservación y restauración. La metodología se basa en el estudio de fuentes primarias, éditas e inéditas, en la revisión de bibliografía especializada y en el trabajo de campo sobre una muestra representativa de elementos ornamentales metálicos aplicados a las fachadas de la arquitectura montevideana. Fue relevado un total de 250 edificios, correspondientes a los distintos períodos que distinguimos en la evolución de la herrería local entre finales del siglo XVIII y mediados del siglo XX. Se trata de un aporte inicial que profundiza en un campo escasamente abordado en nuestro medio acerca del conocimiento y difusión de los trabajos de herrería en el marco del patrimonio arquitectónico y artístico uruguayo, proporcionando información útil a la academia, las instituciones vinculadas a la valoración y conservación patrimonial y el público general. Notas [i] Proyecto concursado y financiado en la modalidad Investigación y Desarrollo (I+D), Comisión Sectorial de Investigación científica (CSIC), Universidad de la República, a realizarse entre marzo de 2018 y marzo de 2020, por un equipo interdisciplinario integrado por docentes e investigadores de las facultades de Arquitectura, Diseño y Urbanismo: Miriam Hojman, Valentina Marchese y Tatiana Rimbaud (Instituto de Historia), Gianella Mussio, Leticia Olivera, Carola Romay y Verónica Ulfe (Instituto de Tecnologías); de la Facultad de Humanidades y Ciencias de la Educación: Ernesto Beretta (Instituto de Ciencias Históricas-Historia del Arte); y de la Facultad de Ingeniería: Sofía Aguiar (Instituto de Ensayo de Materiales). El presente artículo fue elaborado por todos los integrantes del equipo. (shrink)

The aim of this cross-sectional study is to investigate the role of psychological inflexibility in the relationship between anxiety and depression and emotional eating in a sample of 123 inpatient Italian adult individuals with obesity. Participants completed the Anxiety and Depression subscales of the Psychological General Well-Being Inventory, the Acceptance and Action Questionnaire, and the Emotional Eating subscale of the Dutch Eating Behavior Questionnaire to assess anxiety and depression, psychological inflexibility, and emotional eating, respectively. Results showed that the indirect effect (...) of PGWBI-A on DEBQ-EE through AAQ-II was significant [b = −0.0155; SE = 0.076; 95% BC-CI ]. Similarly, the indirect effect of PGWBI-D on DEBQ-EE through AAQ-II was significant [b = −0.0383; SE = 0.0207; 95% BC-CI ]. These findings may help to plan and develop specific psychological interventions aimed at addressing emotional eating through targeting psychological inflexibility to be included in obesity treatment programs. (shrink)

Au cours de la guerre froide, les organisations internationales, notamment celles du système de l’ONU, sont des tribunes instrumentalisées par les deux superpuissances pour se mettre en valeur. C’est le cas de l’UNESCO. Le discours de la cosmonaute soviétique Valentina Terechkova en 1966 est la première prise de parole d’une femme soviétique dans cette enceinte. Terechkova, qui a été la première femme au monde à effectuer, en 1963, un vol dans l’espace, utilise la tribune de l’UNESCO pour introduire des (...) enjeux de genre dans le cadre des relations internationales marquées par le contexte de guerre froide. Au-delà des rapports de force entre États marqués par la bipolarisation du monde, elle tente d’exprimer des arguments à prétention universaliste en faveur des droits des femmes et du développement, tout en produisant un discours à rhétorique typiquement soviétique. (shrink)

Several theories propose that one of the core functions of inner speech (IS) is to support subjects in the completion of cognitively effortful tasks, especially those involving executive functions (EF). In this paper we focus on two populations who notoriously encounter difficulties in performing EF tasks, namely, people diagnosed with schizophrenia who experience auditory verbal hallucinations (Sz-AVH) and people within the Autism Spectrum Conditions (ASC). We focus on these two populations because they represent two different ways in which IS can (...) fail to help in EF tasks, which can be illustrative for other mental conditions. First, we review the main components of EF (Section 1). Then we explain the functions that IS is taken to perform in the domain of EF (Section 2) and review the evidence concerning problems about EF in the two populations of our study: Sz-AVH (Section 3) and ASC (Section 4). After this we further detail our account about what a properly functioning IS can do for both populations and how different IS profiles may impact EF performance: in the case of Sz-AVH, the uncontrolled and intrusive character of IS negatively affects EF performance, whereas in ASC, EF is not sufficiently supported by IS, given the tendency in this population to present a diminished use of IS (Section 5). We finally briefly discuss Attention Deficit/Hyperactivity Disorder (ADHD) and Developmental Language Disorders (DLD). (shrink)

This is a comprehensive analysis of the idea of libertas and its conflicting uses in the political struggles of the late Roman Republic. By reconstructing Roman political thinking about liberty against the background of Classical and Hellenistic thought, it excavates two distinct intellectual traditions on the means allowing for the preservation and the loss of libertas. Considering the interplay of these traditions in the political debates of the first century BC, Dr Arena offers a significant reinterpretation of the political struggles (...) of the time as well as a radical reappraisal of the role played by the idea of liberty in the practice of politics. She argues that, as a result of its uses in rhetorical debates, libertas underwent a form of conceptual change at the end of the Republic and came to legitimise a new course of politics, which led progressively to the transformation of the whole political system. (shrink)

Ontologies represent the standard way to model the knowledge about specific domains. This holds also for the legal domain where several ontologies have been put forward to model specific kinds of legal knowledge. Both for standard users and for law scholars, it is often difficult to have an overall view on the existing alternatives, their main features and their interlinking with the other ontologies. To answer this need, in this paper, we address an analysis of the state-of-the-art in legal ontologies (...) and we characterise them along with some distinctive features. This paper aims to guide generic users and law experts in selecting the legal ontology that better fits their needs and in understanding its specificity so that proper extensions to the selected model could be investigated. (shrink)

Ontologies represent the standard way to model the knowledge about specific domains. This holds also for the legal domain where several ontologies have been put forward to model specific kinds of legal knowledge. Both for standard users and for law scholars, it is often difficult to have an overall view on the existing alternatives, their main features and their interlinking with the other ontologies. To answer this need, in this paper, we address an analysis of the state-of-the-art in legal ontologies (...) and we characterise them along with some distinctive features. This paper aims to guide generic users and law experts in selecting the legal ontology that better fits their needs and in understanding its specificity so that proper extensions to the selected model could be investigated. (shrink)

Ontologies represent the standard way to model the knowledge about specific domains. This holds also for the legal domain where several ontologies have been put forward to model specific kinds of legal knowledge. Both for standard users and for law scholars, it is often difficult to have an overall view on the existing alternatives, their main features and their interlinking with the other ontologies. To answer this need, in this paper, we address an analysis of the state-of-the-art in legal ontologies (...) and we characterise them along with some distinctive features. This paper aims to guide generic users and law experts in selecting the legal ontology that better fits their needs and in understanding its specificity so that proper extensions to the selected model could be investigated. (shrink)

Computability theory is the mathematical theory of algorithms, which explores the power and limitations of computation. Classical computability theory formalized the intuitive notion of an algorithm and provided a theoretical basis for digital computers. It also demonstrated the limitations of algorithms and showed that most sets of natural numbers and the problems they encode are not decidable (Turing computable). Important results of modern computability theory include the classification of the computational difficulty of sets and problems. Arithmetical and hyperarithmetical hierarchies and (...) the Turing degrees provide important measures of the level of such difficulty. There are uncountably many Turing degrees and they are partially ordered. These classifications are used in contemporary research to investigate the complexity of problems in modern computable mathematics, for example, regarding structures and their properties. (shrink)

Il presente articolo si propone di seguire il percorso della tradizione dell’Epistola ai Pisoni di Orazio in Europa e in Italia tra Sette e Ottocento, con particolare attenzione al contesto storico-culturale di riferimento e agli specifici ambienti di ricezione. Il tema è certo ampio e necessiterebbe di una trattazione più distesa e articolata di quella che questa sede può offrire: la prospettiva sarà, dunque, limitata ad alcune specifiche considerazioni sull’argomento. Il lavoro si sofferma primariamente sui diversi meccanismi di traduzione e (...) ripresa che interessano l’opera oraziana tutta. Tra questi si rintracciano molteplici filoni: a partire dalla ricerca biografica, passando attraverso la vivace sfera dell’imitazione e della parodia, per approdare alle rielaborazioni musicale e pittorica. L’analisi giunge così a concentrarsi in particolare sull’Ars poetica, della quale si seguono le fila della diffusione e si ripercorrono gli episodi della fortuna in Italia, dove la ricezione dell’opera si lega alla questione linguistica ai tempi estremamente attuale. Sensibili all’influsso oraziano si rivelano tanto grandi nomi del panorama culturale italiano, quanto intere correnti letterarie, come l’Arcadia, oltre a docenti – sempre più interessati a una corretta lettura dell’opera da parte dei propri studenti – nonché semplici amatori. Funge, infine, da addentellato di uno studio che sarebbe, altrimenti, meramente descrittivo, un’ipotesi in merito a un possibile legame tra gli ambienti di diffusione dell’Ars poetica tipici di ciascuno dei due secoli. Dall’analisi condotta sui dati disponibili si evidenzia, infatti, una continuità di interessi tra arcadici e docenti riconducibile a una “discendenza educativa” di questi ultimi dai primi. (shrink)