This book aims to provide an overview of several topics in advanced Differential Geometry and Lie Group Theory, all of them stemming from mathematical problems in supersymmetric physical theories. It presents a mathematical illustration of the main development in geometry and symmetry theory that occurred under the fertilizing influence of supersymmetry/supergravity. The contents are mainly of mathematical nature, but each topic is introduced by historical information and enriched with motivations from high energy physics, which help the reader in getting a (...) deeper comprehension of the subject. (shrink)

This book presents the author’s personal historical perspective and conceptual analysis on symmetry and geometry. The author enlightens with modern views the historical process which led to the contemporary vision of space and symmetry that are used in theoretical physics and in particular in such abstract and advanced descriptions of the physical world as those provided by supergravity. The book is written intertwining storytelling and philosophical argumentation with some essential technical material. The author argues that symmetry and geometry are inextricably (...) entangled and their current meaning is the result of a long process of abstraction which was determined through history and can be understood within the analytic system of thought of western civilization that started with the Ancient Greeks. The evolution of geometry and symmetry theory in the last forty years has been deeply and constructively influenced by supersymmetry/supergravity and the allied constructions of strings and branes. Further advances in theoretical physics cannot be based simply on the Galilean method of interrogating nature and then formulating a testable theory to explain the observed phenomena. One ought to interrogate human thought, meaning frontier-line mathematics concerned with geometry and symmetry in order to find there the threads of so far unobserved correspondences, reinterpretations and renewed conceptions. (shrink)

Objectives: Investigate and identify the relationship between physical exercise and cognitive performance measured by using different cognitive tests taken from Cambridge Brain Science.Methods: Thirty subjects, divided into two groups, undergo twelve cognitive tests from CBS. A comparison between the pre- and post-exercise results in terms of cognitive performance differences is carried out. Regression analysis between Heart Rate Variability features and CBS tests results is performed.Results: In most CBS tests, there is an improvement, or at least a confirmation, of the subject's (...) cognitive ability, for both groups. Reasoning, concentration, and planning tests seem to undergo critical positive changes. The regression analysis, performed by using a set of different algorithms, has demonstrated that it is possible, by monitoring the HRV during the exercise, to predict to some extent the cognitive performance, i.e., the CBS tests results. The best performing regression algorithms are Simple Linear and REPTree. The statistical analysis has proved that physical activity is statistically useful for the subjects in improving their cognitive performance.Conclusions: This study has numerically appraised the improvement, the conservation, or the worsening on different aspects of cognition. The found mathematical relationship between physical exercise and cognitive performance suggests that it is possible to predict the beneficial effect of various exercises on executive and attentive control. (shrink)

A fronte del quotidiano rincorrersi di nuovi interrogativi che esigono una risposta dalla bioetica, si assiste alla difficoltà di trovare un solido fondamento al giudizio etico in bioetica. Si confrontano e si scontrano, infatti, teorie etiche tra di loro non sovrapponibili né conciliabili, che portano a soluzioni pratiche tra di loro divergenti e spesso, troppo spesso, dimentiche della centralità della persona umana. Edè proprio la riflessione sulla persona umana, con i suoi diritti, ma anche con i suoi doveri, secondo la (...) lettura del personalismo ontologicamente fondato, il filo conduttore dei contributi contenuti in questo volume...(Dalla quarta di copertina)- In sommario: La nuova genetica - La clonazione umana: aspetti tecnici e considerazioni - Le basi biologiche della sessualità - Natura e interpretazione dei disordini sessuali: l'omosessualità - I disorientamenti sessuali: il ruolo dell'educatore - La sindrome da immunodeficienza acquisita - Orientamenti metodologici nell'educazione sessuale. (shrink)

Polarization in Western democracies and the collapse of centrally planned economies have led to calls for a redefinition of the state's core functions. This volume explores shifting conceptions of constitutional political economy anchoring the state from the viewpoints of theory, systems, and applications. It suggests why changes may be desirable and how these might be implemented. Part I addresses the writing of constitutions, the dynamic between constitutional order and civil society, the struggle between competitive and protectionist interests, the conflict between (...) protecting expectations and moral evolution, and the role of cultural explanations of constitutional development patterns. Part II explores the interplay between electoral systems and constitutional engineering, the internal costs of political coalitions, and campaigns in pluralistic elections. Part III investigates the quest for stable, dynamic federal states with particular attention to opportunities and pitfalls in Europe. With a foreword and contributions from Nobel Laureate James M. Buchanan. (shrink)

Siamo ormai lontani dalla stagione in cui la forza propulsiva della “svolta linguistica” si impose come tendenza dominante nel dibattito filosofico. Da varie angolazioni si è potuto parlare negli ultimi anni di pictorial turn come antidoto all’egemonia del paradigma linguistico in filosofia. Il volume Verità, Immagine, Normatività. Truth, Image, and Normativity non si inserisce direttamente in questa nuova tendenza, ma ruota comunque intorno a questioni che derivano dal medesimo sfondo. I 24 saggi qui raccolti tengono conto dei diversi ruoli che (...) le immagini possono svolgere, a seconda che si focalizzi la loro dimensione descrittiva o normativa, e indagano alcuni aspetti del rapporto tra immagine e linguaggio. Questi problemi di filosofia dell’immagine, intesa sia come immagine cognitiva sia come immagine grafica, costituiscono il fil rouge di questo volume. Una tale riflessione sui linguaggi figurati e sulla comunicazione visiva non-linguistica costringe a riformulare in termini nuovi le grandi domande concernenti le tradizionali nozioni di verità, oggettività, normatività, consenso e persuasione. (shrink)

Siamo ormai lontani dalla stagione in cui la forza propulsiva della “svolta linguistica” si impose come tendenza dominante nel dibattito filosofico. Da varie angolazioni si è potuto parlare negli ultimi anni di pictorial turn come antidoto all’egemonia del paradigma linguistico in filosofia. Il volume Verità, Immagine, Normatività. Truth, Image, and Normativity non si inserisce direttamente in questa nuova tendenza, ma ruota comunque intorno a questioni che derivano dal medesimo sfondo. I 24 saggi qui raccolti tengono conto dei diversi ruoli che (...) le immagini possono svolgere, a seconda che si focalizzi la loro dimensione descrittiva o normativa, e indagano alcuni aspetti del rapporto tra immagine e linguaggio. Questi problemi di filosofia dell’immagine, intesa sia come immagine cognitiva sia come immagine grafica, costituiscono il fil rouge di questo volume. Una tale riflessione sui linguaggi figurati e sulla comunicazione visiva non-linguistica costringe a riformulare in termini nuovi le grandi domande concernenti le tradizionali nozioni di verità, oggettività, normatività, consenso e persuasione. (shrink)

The nature of time is rooted in our body. Constellations of impulses arising from the flesh constantly create our interoceptive perception and, in turn, the unfolding of these perceptions defines human awareness of time. This study explored the connection between time perception and interoception and proposes the Interoceptive Buffer saturation (IBs) index. IBs evaluates subjects’ ability to process salient stimuli from the body by measuring subjective distortions of interoceptive time perception, i.e., the estimated duration of tactile interoceptive stimulations. Thirty female (...) healthy subjects were recruited through consecutive sampling and assessed for common variables related to interoceptive alterations: depressive symptoms (Beck Depression Inventory, BDI-II), eating disorders (EDI-3) risk, and anxiety levels (State Trait Anxiety Inventory, STAI). Interoceptive cardiac accuracy (IAc) was assessed as well. Subjects performed verbal time estimation of interoceptive stimuli (IBs) delivered using a specifically designed interoceptive tactile stimulator, as well as verbal time estimation of visual and auditory stimuli. Results showed that IBs index positively correlated with IAc, and negatively with EDI-3 Drive for Thinness (DT) risk subscale. Moreover, IBs index was positively predicted by IAc, and negatively predicted by DT and somatic factors of depression. Our results suggest that underestimations in interoceptive time perception are connected to different psychological conditions characterized by a diminished processing of high salience stimuli from the body. Conversely, overestimations of the duration of interoceptive stimuli appear to be function of subjects’ ability to correctly perceive their own bodily information. Evidence supported IBs index, fostering the concept of interoceptive treatments for clinical purposes. (shrink)

In the present manuscript, we comment upon a paper that strongly criticized an expert report written by the consultants of the defense in a case of pedophilia, in which clinical and neuro-scientific data were used to establish the causal link between brain alterations and onset of criminal behavior. These critiques appear to be based mainly on wrong pieces of information and on a misinterpretation of the logical reasoning adopted by defense consultants. Here we provide a point-by-point reply to the issues (...) raised in the above paper and also discuss the potential role that neuroscience may contribute in the forensic context. Did the forensic neuroscience defense consultants claim the existence of a deterministic relationship between brain structure or function and behavior? How did the neuroscientific logic work in this specific case? How may the classic psychiatric/neurologic examination and neuroscientific evidence work side by side? Does the rarity of a disease impact on the causal relationship between the disease and the crime? Do neuroscientific data need to be interpreted? We address the above questions and conclude that neuroscience may strengthen the results of psychiatric evaluations, thus reducing uncertainty in the forensic settings. (shrink)

This observational study analyzes the impact of Internet use on the quality of life and well-being of the elderly. Specifically, it seeks to understand and clarify the effects of Internet use on relationships in terms of self-esteem, life satisfaction and online and offline social support in a sample of senior and elderly Italian people (over 60 years of age). A cohort of 271 elderly people (133 males, 138 females) aged between 60 and 94 years old participated in the study: 236 (...) were Internet Users while the other 35 were Non-Internet Users. The results showed that the time elderly people spend online has a negative effect on their perception of Offline Social Support (Offline Emotional and Informational, and Offline Affective Social Support) and a positive effect on their perception of Online Social Support (particularly on Online Positive Social Interactions). Surprisingly, Internet Use among elderly people seems to impact positively on the perception of Offline Social Support. Indeed, Elderly Internet Users have a more positive perception of Offline Social Support (particularly Offline Positive Social Interactions and Offline Affective Social Support) than Non-Internet Users. A discussion of this finding is provided, positing that the Internet seems to represent the technological side of a functional organ that allows the elderly to stay in closer touch with their family and friends, and in doing so to also overcome some age-related difficulties. (shrink)

I saggi che nel corso di quasi vent’anni Giuseppe Lissa ha dedicato al suo e al mio maestro non sono solo una compatta proposta interpretativa della filosofia di Pietro Piovani, seguita dal suo interno, con scrupolosa individuazione di ciascuno dei momenti costitutivi. Questi saggi rappresentano anche il sottofondo, direi la intelaiatura che regge i problemi della posizione etica di Lissa, il telaio su cui i vari fili della sua riflessione etica e religiosa si intrecciano a costituire un fitto (...) tessuto ricognitivo, agevolato dal ripensamento della filosofia di Piovani. (Dalla Presentazione di Fulvio Tessitore) Fulvio Tessitore, Presentazione p.9 Premessa p.13 Dalla maestria alla filia p.17 Dalla nostalgia allo stupore p.73 Esplorazione dell’individuale e pluralità p.105 Filosofia della morale: comprensione del negativo e primato dell’etica p.147 Lo storicismo p.211 Etica e religione p.249. (shrink)

According to a growing body of studies, people’s ability to forecast future emotional experiences is generally biased. Nonetheless, the existing literature has mainly explored affective forecasting in relation to specific events, whereas little is still known about the ability to make general estimations of future emotional states. Based on existing evidence suggesting future-oriented disposition as a key factor for mental health, the aims of the current study were (1) to investigate the relationship between negative (NA) and positive (PA) affective forecasting (...) biases and perceived psychological well-being, and (2) to explore whether positively biased predictions are associated with resilience and foster one’s skills to cope with stressful events. To do so, we asked 85 undergraduate students to forecast PA and NA over 2 weeks, as well as to report their daily affect through a web-based Ecological Momentary Assessment. According to the results, positively biased PA forecasting (i.e., overestimating positive emotional states) was associated with greater perceived psychological well-being and higher resilience. When high levels of stress were experienced, participants holding an optimistic, yet biased, estimation of future PA were more likely to successfully manage stressors, thus maintaining lower levels of NA and higher levels of positive emotions. We suggest that positively biased PA forecasting is an adaptive cognitive distortion that boosts people’s resilience and mental health, thus opening new avenues for the promotion of psychological well-being. (shrink)

Per il francescano Olivi lo stato dell’altissima povertà e la perfezione evangelica comportano la rinuncia alla proprietà e l’espropriazione di ogni diritto. Olivi argomenta che l’altissima povertà include in modo necessario e come parte integrante del voto francescano l’usus pauper, vale a dire l’uso povero dei beni e delle cose. In questo contesto Olivi si pone la questione di quale sia lo statuto giuridico della povertà e di come sia possibile vivere la perfezione evangelica all’interno di una società segnata dalla (...) rivoluzione commerciale e dalla crescente monetizzazione. La longa et scandalosa disceptatio de observantia regulae1 e la disputa sulla povertà del XIII secolo2 non si riducono solo ad una questione... (shrink)

A collection of essays dedicated to Pier Luigi Lecis' retirement. Contributors include: Mariano Bianca, Silvana Borutti, Vinicio Busacchi, Massimo Dell'Utri, Rosaria Egidi, Roberta Lanfredini, Giuseppe Lorini, Diego Marconi, Francesco Orilia, Paolo Parrini, Alberto Peruzzi, Simonluca Pinna, Pietro Salis, Paolo Spinicci.

The view that short-term memory should be conceived of as being a process based on the activation of long-term memory is inconsistent with neuropsychological evidence. Data from brain-damaged patients, showing specific patterns of impairment, are compatible with a vision of memory as a multiple-component system, whose different aspects, in neurologically unimpaired subjects, show a high degree of interaction.

We offer a formal treatment of the semantics of both complete and incomplete mistrustful or distrustful information transmissions. The semantics of such relations is analysed in view of rules that define the behaviour of a receiving agent. We justify this approach in view of human agent communications and secure system design. We further specify some properties of such relations.

This short paper is meant to be an introduction to the ‘Letter to Alan Turing’ that follows it. It summarizes some basic ideas in information theory and very informally hints at their mathematical properties. In order to introduce Turing’s two main theoretical contributions, in Theory of Computation and in Morphogenesis, the fundamental divide between discrete vs. continuous structures in mathematics is presented, as it is also a divide in his scientific life. The reader who is familiar with these notions, and (...) is convinced that they are relevant in the mathematical understanding of phenomena, may skip this introduction and go directly to the Letter. (shrink)

The foundation of Mathematics is both a logico-formal issue and an epistemological one. By the first, we mean the explicitation and analysis of formal proof principles, which, largely a posteriori, ground proof on general deduction rules and schemata. By the second, we mean the investigation of the constitutive genesis of concepts and structures, the aim of this paper. This “genealogy of concepts”, so dear to Riemann, Poincaré and Enriques among others, is necessary both in order to enrich the foundational analysis (...) with an often disregarded aspect (the cognitive and historical constitution of mathematical structures) and because of the provable incompleteness of proof principles also in the analysis of deduction. For the purposes of our investigation, we will hint here to a philosophical frame as well as to some recent experimental studies on numerical cognition that support our claim on the cognitive origin and the constitutive role of mathematical intuition. (shrink)