We use the notion of polar duality from convex geometry and the theory of Lagrangian planes from symplectic geometry to construct a fiber bundle over ellipsoids that can be viewed as a quantum-mechanical substitute for the classical symplectic phase space. The total space of this fiber bundle consists of geometric quantum states, products of convex bodies carried by Lagrangian planes by their polar duals with respect to a second transversal Lagrangian plane. Using the theory of the John (...) ellipsoid we relate these geometric quantum states to the notion of “quantum blobs” introduced in previous work; quantum blobs are the smallest symplectic invariant regions of the phase space compatible with the uncertainty principle. We show that the set of equivalence classes of unitarily related geometric quantum states is in a one-to-one correspondence with the set of all Gaussian wavepackets. We emphasize that the uncertainty principle appears in this paper as geometric property of the states we define, and is not expressed in terms of variances and covariances, the use of which was criticized by Hilgevoord and Uffink. (shrink)

ArgumentTwo simultaneous episodes in late nineteenth-century mathematical research, one by Karl Hermann Brunn and another by Hermann Minkowski, have been described as the origin of the theory of convex bodies. This article aims to understand and explain how and why the concept of such bodies emerged in these two trajectories of mathematical research; and why Minkowski's – and not Brunn's – strand of thought led to the development of a theory of convexity. Concrete pieces of Brunn's and (...) Minkowski's mathematical work in the two episodes will, from the perspective of the above questions, be presented and analyzed with the use of the methodological framework of epistemic objects, techniques, and configurations as adapted from Hans-Jörg Rheinberger's work on empirical sciences to the historiography of mathematics by Moritz Epple. Based on detailed descriptions and a comparison of the objects and techniques that Brunn and Minkowski studied and used in these pieces it will be concluded that Brunn and Minkowski worked in different epistemic configurations, and it will be argued that this had a significant influence on the mathematics they developed for those bodies, which can provide answers to the two research questions listed above. (shrink)

John Locke:When we set before our eyes a round globe of uniform colour, v.g. gold, alabaster or jet, it is certain that the idea thereby imprinted in our mind is of a flat circle, variously shadowed, with several degrees of light and brightness coming to our eyes. But we having, by use, been accustomed to perceive what kind of appearance convex bodies are wont to make in us, what alterations are made in the reflections of light by the (...) difference of the sensible figures of bodies: the judgment presently, by an habitual custom, alters the appearances into their causes.H.H. Price:…. a distant hillside which is full of protuberances, and slopes upwards at quite a gentle angle, will appear flat and vertical….. This means that the sense-datum, the colour expanse which we sense, actually is flat and vertical. (shrink)

We give a constructive proof of McNaughton's theorem stating that every piecewise linear function with integral coefficients is representable by some sentence in the infinite-valued calculus of Lukasiewicz. For the proof we only use Minkowski's convex body theorem and the rudiments of piecewise linear topology.

Body movement is a primary nonverbal communication channel in humans. Coordinated social behaviors, such as dancing together, encourage multifarious rhythmic and interpersonally coupled movements from which observers can extract socially and contextually relevant information. The investigation of relations between visual social perception and kinematic motor coupling is important for social cognition. Perceived coupling of dyads spontaneously dancing to pop music has been shown to be highly driven by the degree of frontal orientation between dancers. The perceptual salience of other aspects, (...) including postural congruence, movement frequencies, time‐delayed relations, and horizontal mirroring remains, however, uncertain. In a motion capture study, 90 participant dyads moved freely to 16 musical excerpts from eight musical genres, while their movements were recorded using optical motion capture. A total from 128 recordings from 8 dyads maximally facing each other were selected to generate silent 8‐s animations. Three kinematic features describing simultaneous and sequential full body coupling were extracted from the dyads. In an online experiment, the animations were presented to 432 observers, who were asked to rate perceived similarity and interaction between dancers. We found dyadic kinematic coupling estimates to be higher than those obtained from surrogate estimates, providing evidence for a social dimension of entrainment in dance. Further, we observed links between perceived similarity and coupling of both slower simultaneous horizontal gestures and posture bounding volumes. Perceived interaction, on the other hand, was more related to coupling of faster simultaneous gestures and to sequential coupling. Also, dyads who were perceived as more coupled tended to mirror their pair's movements. (shrink)

In a series of papers, we have argued that causal cognition has coevolved with the use of various tools. Animals use tools, but only as extensions of their own bodies, while humans use tools that act at a distance in space and time. This means that we must learn new types of causal mappings between causes and effects. The aim of this article is to account for what is required for such learning of causal relations. Following a proposal by (...) Grush and Springle, we argue that learning of inverse mappings from effects to causes is central. Learning such mappings also involves constraints based on monotonicity, continuity and convexity. In order for causal thinking to extend beyond space and time, mental simulations are required that predict the effects of actions. More advanced forms of causal reasoning involve more complicated forms of simulations. (shrink)

Gil R, Arroyo-Anllo EM, Ingrand P, Gil M, Neau JP, Ornon C, Bonnaud V. Self-consciousness and Alzheimer’s disease. Acta Neurol Scand 2001: 104: 296–300. # Munksgaard 2001. Objectives – To propose a neuropsychological study of the various aspects of self-consciousness (SC) in Alzheimer’s disease. Methods – Forty-five patients with probable mild or moderate AD were included in the study. Severity of their dementia was assessed by the Mini Mental State (MMS). Fourteen questions were prepared to evaluate SC. Results – No (...) significant correlations were found between SC score and educational level, age, and duration of disease. A significant correlation was found between SC score and the severity of dementia, whereas frontal disturbances were just short of the significance threshold. The various aspects of SC were not impaired to the same degree. The most disturbed ones were awareness of cognitive deficiencies, moral judgements and prospective memory. The least disturbed aspects were awareness of identity and of mental representation of the body. Items relating to anosognosia and moral judgements were significantly correlated with the MMS score, whereas affective state, body representation disorders, prospective memory, and capacities for introspection were not related to the severity of the dementia. Consciousness of identity was sound, regardless of MMS score. Conclusions – AD clearly induces an heterogeneous impairment of SC. SC requires a convergence of many neural networks. In AD, neuronal alterations involve many cortical areas and information sent to the associative frontal cortex from memory, language and visuospatial areas is lacking or disturbed. Thus, the sequential order of successive stimuli cannot be maintained by the heteromodal associative cortex (dorsal convexity of the prefrontal cortex), and the supramodal associative cortex (located rostrally in the frontal lobes) is unable to provide reliable monitoring and assessment of simultaneous neural cognitive networks carrying insufficient and inadequate input. The core deficiency in AD patients might be impaired SC equated with the disability to maintain sequential and simultaneous ‘‘attention to life’’. The Self-Consciousness Questionnaire, a clinical scale providing multidimensional measurement, indicates that different aspects of consciousness are not correlated with overall cognitive deficiency as determined by the MMSE. (shrink)

The fitness of any evolutionary unit can be understood in terms of its two basic components: fecundity (reproduction) and viability (survival). Trade-offs between these fitness components drive the evolution of life-history traits in extant multicellular organisms. We argue that these trade-offs gain special significance during the transition from unicellular to multicellular life. In particular, the evolution of germ–soma specialization and the emergence of individuality at the cell group (or organism) level are also consequences of trade-offs between the two basic fitness (...) components, or so we argue using a multilevel selection approach. During the origin of multicellularity, we study how the group trade-offs between viability and fecundity are initially determined by the cell level trade-offs, but as the transition proceeds, the fitness trade-offs at the group level depart from those at the cell level. We predict that these trade-offs begin with concave curvature in single-celled organisms but become increasingly convex as group size increases in multicellular organisms. We argue that the increasingly convex curvature of the trade-off function is driven by the cost of reproduction which increases as group size increases. We consider aspects of the biology of the volvocine green algae – which contain both unicellular and multicellular members – to illustrate the principles and conclusions discussed. (shrink)

Prospect theory emerged as one of the leading descriptive decision theories that can rationalize a large body of behavioral regularities. The methods for eliciting prospect theory parameters, such as its value function and probability weighting, are invaluable tools in decision analysis. This paper presents a new simple method for eliciting prospect theory’s value function without any auxiliary/simplifying parametric assumptions. The method is applicable both to choice under ambiguity (Knightian uncertainty) and risk (when events are characterized by objective probabilities). Our new (...) elicitation method is implemented in a simple paper-and-pencil experiment (via an iterative multiple price list format). This is one of the first experiments that elicits non-parametric prospect theory’s value function with salient rewards. The collected data generally confirm findings in the existing literature: the value function is S-shaped (concave in the gain domain and convex in the loss domain) though there is a weaker loss aversion on the aggregate level and a substantial heterogeneity in loss aversion on the individual level (41% loss averse, 6% loss neutral and 53% gain seeking). (shrink)

Aberrations -- Absorption -- Accuracy and precision -- Alpha radiation -- Amplitude -- Angular forces -- Angular momentum -- Antenna -- Arago dot -- Aperture -- Archimedes's principle -- Band theory of solids -- Bernoulli's principle -- Beta radiation -- Blackbody radiation -- Bohr atom -- Bose condensation -- Bra-ket notation -- British thermal unit (BTU) -- Calculating system efficiency -- Circular motion -- Closed systems and isolated systems -- Concave and convex -- Conservation of charge -- Conservation of (...) energy -- Convection and conduction -- Cosmic radiation -- Crest and trough -- Density and specific gravity -- Diode -- Distance and area -- Distortion -- Doppler effect -- Dynamic systems theory -- Edison effect -- Eigenvectors -- Elastic and inelastic collisions -- Electric circuits: Parallel vs series, diagrams and components -- Electric potential -- Energy and power -- Enthalpy -- Entropy -- Euler's laws of motion -- Falling bodies and physics -- Faraday's law -- Feynman diagrams -- Flywheel -- Focal point -- Free body diagram -- Frequency -- Gamma radiation -- Gauss's law -- Gluon -- Gravitational potential energy -- Harmonic oscillator -- Harmonics -- Heisenberg uncertainty principle -- Higgs boson -- Horsepower -- Ideal gas law -- Joule --. (shrink)

One of the theories defined in Baldwin's Dictionary of Philosophy and Psychology, published in 1901, is ‘The Double Aspect Theory’. It is ‘the theory of the relation of mind and body, which teaches that mental and bodily facts are parallel manifestations of a single underlying reality’. It ‘professes to overcome the onesidedness of materialism and idealism by regarding both series as only different aspects of the same reality, like the convex and the concave views of a curve; or, according (...) to another favourite metaphor, the bodily and the mental facts are really the same facts expressed in different language’. (shrink)

As study of knowledge, epistemology attempts at identifying its necessary and sufficient conditions and defining its sources, structure and limits. From this pointof view, until present, there are no applied approaches to the Romanian archaeology. Consequently, my present paper presents an attempt to explore the structural characteristics of the knowledge creation process through the analysis of the results of a series of interviews conducted on Romanian archaeologists. The interviews followed a qualitative approach built upon a semi-structured frame. Apparent data saturation (...) was reached after four interviews within initial target group (senior researchers with institutional authority). Under these conditions a decision was made to continue the interviews within a secondary control group (young doctoral or post-doc researchers guided by members of the initial target group) in order to both verify the observed data saturation and to assess the impact of the attitude of senior researchers towards scientific research on the younger generation. The preliminary results allow to assert that Romanian archaeology is still caught in a highly conservative and intradisciplinarian manner of knowledge production with a negative effect on both new knowledgeproduction and future specialists’ education. (shrink)

IntroductionThe world pandemic of the virus SARS-CoV-2, which causes COVID-19 infection was announced by the World Health Organization on March 11, 2020. Due to the restrictions that were introduced in order to minimize the spread of the virus, people more often suffer from stress, depression, anxiety, and sleep disorders. The aim of this study was evaluation of the stress levels and sleep disorders among nursing students during the pandemic SARS-CoV-2.Materials and Study MethodsThis is a cross-sectional study conducted among 397 nursing (...) students on March 2020. The research tools used were original questionnaires, Perceived Stress Scale, and the Athenian Insomnia Scale, as well as Coping with Stress Inventory.ResultsRespondents felt a high level of stress, which occurred in 68.8% of interviewees regarding whether there was a danger of contracting COVID-19. Respondents experienced 84% stress levels when a family member suffered from COVID-19. Sleep disorders were determined mainly by the fear of infection and contact with someone who might be infected with the virus. Nursing students who felt a high level of stress often suffered from sleep disorders more frequently than students who felt a low or average stress level. The respondents decided to cope with stress by denial, taking psychoactive substances, ceasing action, or blaming themselves. The greater the intensity of stress experienced by students, the more often they undertook avoidance behaviors or showed helplessness.ConclusionDuring the pandemic, students experienced severe stress, which resulted in sleep disorders and avoidance behaviors. (shrink)

Videogames and Agency explores the trend in videogames and their marketing to offer a player higher volumes, or even more distinct kinds, of player freedom. The book offers a new conceptual framework that helps us understand how this freedom to act is discussed by designers, and how that in turn reflects in their design principles. What can we learn from existing theories around agency? How do paratextual materials reflect design intention with regards to what the player can and cannot do (...) in a videogame? How does game design shape the possibility space for player action? Through these questions and selected case studies that include AAA and independent games alike, the book presents a unique approach to studying agency that combines game design, game studies, and game developer discourse. By doing so, the book examines what discourses around player action, as well as a game's design can reveal about the nature of agency and videogame aesthetics. This book will appeal to readers specifically interested in videogames, such as game studies scholars or game designers, but also to media studies students and media and screen studies scholars less familiar with digital games. (shrink)

Globalization leads to cross-border business transactions between societies with very different norms and regulations regarding bribery. Bribery in international business transactions can be seen as a function of not only the demand for such bribes in different countries, but the supply, or willingness to provide bribes by multinational firms and their representatives. This study addresses the propensity of firms from 30 different countries to engage in international bribery. The study incorporates both domestic (economic development, culture, and domestic corruption in the (...) supplying country) and international factors (those countries’ patterns of trade and involvement in international accords) in explaining the willingness to bribe abroad. The propensity to provide bribes was the lowest when corruption was not tolerated in the multinational firms’ home countries, when the firms’ countries were signatories of the Organization for Economic Cooperation and Development (OECD) anti-bribery convention, and when those countries traded heavily with wealthier nations. Further, these findings are maintained when controlling for levels of economic development and cultural values in the supplying country. In terms of culture, firms from high power distance countries showed a somewhat greater propensity for providing bribes in transactions with less-developed nations. (shrink)

Bewildering features of modern physics, such as relativistic space-time structure and the peculiarities of so-called quantum statistics, challenge traditional ways of conceiving of objects in space and time. Interpreting Bodies brings together essays by leading philosophers and scientists to provide a unique overview of the implications of such physical theories for questions about the nature of objects. The collection combines classic articles by Max Born, Werner Heisenberg, Hans Reichenbach, and Erwin Schrodinger with recent contributions, including several papers that have (...) never before been published. -/- The book focuses on the microphysical objects that are at the heart of quantum physics and addresses issues central to both the "foundational" and the philosophical debates about objects. Contributors explore three subjects in particular: how to identify a physical object as an individual, the notion of invariance with respect to determining what objects are or could be, and how to relate objective and measurable properties to a physical entity. The papers cover traditional philosophical topics, common-sense questions, and technical matters in a consistently clear and rigorous fashion, illuminating some of the most perplexing problems in modern physics and the philosophy of science. (shrink)

In Bodies and Pleasures, Ladelle McWhorter reads Foucault from an original and personal angle, motivated by the differences this experience has made in her life.

Black Bodies, White Gazes: The Continuing Significance of Race understands Black embodiment within the context of white hegemony within the context of a racist, anti-Black world. Yancy demonstrates that the Black body is a historically lived text on which whites have inscribed their projections which speak equally forcefully to whites' own self-conceptualizations.

The latest book by the Slovenian critic Slavoj Zizek takes the work of French philosopher Gilles Deleuze as the beginning of a dazzling inquiry into the realms of radical politics, philosophy, film (Hitchcock, Fight Club ), and psychoanalysis. Of Organs without Bodies Joan Copjec ( Imagine There's No Woman ) has written: "With all his ususal humor and invention, Zizek -- the acknowledged master of the 180 degree turn -- here takes a trip into "enemy" territory to deliver Deleuze (...) of a marvelously rebellious child, one that seriously challenges Deleuze's other progeny with a surprising but convincing bid for succession. Those who thought Deleuze's forward march into the future would follow a straight path are forced to rethink their stance. From now on all readings of Deleuze will have to take a detour through this important -- even necessary -- book." Eric Santner ( On the Psychopathology of Everyday Life ) describes Organs without Bodies as offering "an entirely new degree of conceptual clarity and political urgency. Through his deep engagement with the logic of Deleuze's project, Zizek opens up new possibilities of thought beyond the terms of the current political debates on globalization, democratization, war on terror. Once again, Zizek has produced an utterly timely and radically untimely meditation." Recently profiled in The New Yorker , and hailed by the Village Voice as "the giant of Ljubljana," Zizek is one of the most provocative and entertaining thinkers at work today. (shrink)

In this book, a leading philosopher of technology explores the meaning of bodies in technology—how the sense of our bodies and of our orientation in the world is affected by the various information technologies.

Lynne Rudder Baker and many others think that paradigmatic instances of one object constituting another—a piece of marble constituting a statue, or an aggregate of particles constituting a living body—involve two distinct objects in the same place at the same time. Some who say this believe in the doctrine of temporal parts; but others, like Baker, reject this doctrine. Such philosophers, whom one might call “coincidentalists”, cannot say that these objects manage to share space in virtue of sharing a temporal (...) part confined to just that place and time. But what can or should coincidentalists say about the nature of constitution? Many have analyzed the relation as one of sharing, “at some level”, all and only the same parts. Most have agreed that such massive part-sharing is at least a central component of and necessary condition for constitution. The heart of Baker’s Persons and Bodies, and its most significant contribution to the development of coincidentalism, is a theory of constitution that makes no appeal to mereology. The leading idea in Baker’s account is, instead, a modal one: objects belonging to constituted kinds are the necessary result of putting objects belonging to appropriate constituting kinds in the right circumstances, circumstances which the constituting objects need not have been in. So putting a piece of man-shaped marble in the right circumstances necessarily results in the existence of a second object, a statue, constituted by the marble; but the piece of marble need not have fallen into these circumstances or any others in which it would constitute a statue. (shrink)

Foucault proposes at the end of the first volume of The History of Sexuality to shift the focus of sexual studies from sex-desire to bodies and pleasures. This article seeks to establish what he means by this shift, how he proposes it be made, and what the consequences are for thinking about sexuality together with `sex'. Foucault's shift involves a historiographical claim about the superability of the recent past, and can be read as an effort to relegate the concerns (...) about sexual difference and kinship to the past, and to establish a contemporary field for sexuality that involves bodies without history, pleasures without sex. The article suggests a way around this questionable historiographical assumption and marks a different departure for a Foucauldian study of sexuality. It also seeks to highlight some of the contemporary tensions between feminist and lesbian and gay studies, especially queer studies, in light of this reading of Foucault. (shrink)

I would first like to congratulate Dr Seale for producing a thought-provoking piece of research that has captured the imagination of the nation's media. 1 I would also like to point out an interesting discordance that I have noted with regard to the findings of this important research, which ought to stimulate further discussion. Although religious doctors were significantly less likely than their non-religious colleagues to provide continuous or deep sedation until death or to provide treatment with at least ….

As part of a research conducted in the field of professional didactics for the design of video-based training for saddlers, we mobilize an iterative and collaborative analysis protocol with professionals. We compare the effects produced during a debate between experts mediated by the researcher, based sometimes on a confrontation with video traces of the activity, sometimes on the temporary diagrams of a conceptual structure of the situation. Using the argumentative trilogue analysis framework, we show how these methodologies are able to (...) foster the expression of a process of conceptualization depending on whether professionals are confronted with lived images or concep-tualizations produced by the researcher. (shrink)

This paper is going to discuss, what will be called, ‘The Internet of Bodies’. Our physical and virtual worlds are blending and shifting our understanding of three key areas: (1) our identities are diversifying, as they become hyper-enhanced and multi-sensory; (2) our collaborations are co-created, immersive and connected; (3) our innovations are diverse and inclusive. It is proposed that our bodies have finally become the interface.

Once described as hermaphrodites and later as intersex people, individuals born with intersex variations are routinely subject to so-called “normalizing” medical interventions, often in childhood. Opposition to such practices has been met by attempts to discredit critics and reasserted clinical authority over the bodies of women and men with “disorders of sex development.” However, claims of clinical consensus have been selectively constructed and applied and lack evidence. Limited transparency and lack of access to justice have helped to perpetuate forced (...) interventions. At the same time, associated with the diffusion of distinct concepts of sex and gender, intersex has been constructed as a third legal sex classification, accompanied by pious hopes and unwarranted expectations of consequences. The existence of intersex has also been instrumentalized for the benefit of other, intersecting, populations. The creation of gender categories associated with intersex bodies has created profound risks: a paradoxically narrowed and normative gender binary, maintenance of medical authority over the bodies of “disordered” females and males, and claims that transgressions of social roles ascribed to a third gender are deceptive. Claims that medicalization saves intersex people from “othering,” or that legal othering saves intersex people from medicalization, are contradictory and empty rhetoric. In practice, intersex bodies remain “normalized” or eliminated by medicine, while society and the law “others” intersex identities. That is, medicine constructs intersex bodies as either female or male, while law and society construct intersex identities as neither female nor male. Australian attempts at reforms to recognize the rights of intersex people have either failed to adequately comprehend the population affected or lacked implementation. An emerging human rights consensus demands an end to social prejudice, stigma, and forced medical interventions, focusing on the right to bodily integrity and principles of self-determination. (shrink)

These essays examine the ways in which the consideration of ethical questions is shaped by the structures of knowledge and communication at work in clinical ...

The discourse around self-driving cars has been dominated by an emphasis on their potential to reduce the number of accidents. At the same time, proponents acknowledge that self-driving cars would inevitably be involved in fatal accidents where moral algorithms would decide the fate of those involved. This is a necessary trade-off, proponents suggest, in order to reap the benefits of this new technology. In this article, I engage this argument, demonstrating how an undue optimism and enthusiasm about this technology is (...) obscuring our ability to see what is at stake and explaining how moving beyond the dominant utilitarian framings around this technology opens up a space for both ethical inquiry and innovative design. I suggest that a genuine caring concern for the many lives lost in car accidents now and in the future—a concern that transcends false binary trade-offs and that recognizes the systemic biases and power structures that make certain groups more vulnerable than others—could serve as a starting point to rethink mobility, as it connects to the design of our cities, the well-being of our communities, and the future of our planet. (shrink)