Recent research has shown that a phase transformation of diamond to a different form of carbon is involved when diamonds are polished in the traditional fashion. The question as to how this phase transformation is activated and maintained to produce high wear rates is of great technological interest since it may radically change the way we view the processing of diamond. This paper describes the use of Raman spectroscopy to examine debris produced on the diamond polishing wheel, both during its (...) preparation and during polishing. In addition, polished diamond surfaces were examined for the possible existence of non-diamond surface layers in an attempt to identify material removal mechanisms. Raman spectroscopy proves ideal for these analyses because its relatively high spatial resolution is well suited to the analysis of small wear features and debris particles, and because of the wealth of information it reveals about chemical structure. This level of structural information has been lacking in previous analyses of diamond polishing debris. In addition to the non-diamond carbon found in the wear debris, significant quantities of two iron oxides, magnetite (Fe3O4) and haematite (α-Fe2O3), were also found. An interesting observation was that a transformation from magnetite to haematite could be induced either by using high power laser excitation or by frictional heating during polishing. It is suggested that some of the Raman peaks previously attributed to lonsdaleite might better be explained by the presence of these oxides. (shrink)

The philosophical implication that guides the issue addressed here is the following: how does the principle of the common constitute a frontal apophasis to the principle of property in contemporary democracies? I do not pretend to offer an exhaustive answer to this problem. However, I use the argumentative strategy of dividing this paper into three sections: (i) theoretically investigate the dialectical tension between the principle of the common and the principle of property; (ii) analytically observe the premise that the behavioral (...) practices of exacerbated individualism contribute as an act of aversion to the principle of the common and (iii) dwell on the articulation of the notion of the principle of the common as a factor that is present on the threshold between the philosophical vulgar and philosophical universal. Finally, I form some considerations that problematize the naturalized notion of the principle of property in current democracies, in view of the constituent power that the principle of the common holds in the perspective of achieving the well-being of human agents in contemporary community life. (shrink)

When a belief is self-fulfilling, having it guarantees its truth. When a belief is self-defeating, having it guarantees its falsity. These are the cases of “self-impacting” beliefs to be examined below. Scenarios of self-defeating beliefs can yield apparently dilemmatic situations in which we seem to lack sufficient reason to have any belief whatsoever. Scenarios of self-fulfilling beliefs can yield apparently dilemmatic situations in which we seem to lack reason to have any one belief over another. Both scenarios have been used (...) independently to challenge Evidentialism, on which what we may rationally believe is all and only what fits our current evidence. Here we tie the two scenarios together and explore what a knowledge-sensitive evidentialist approach to one implies for the other. (shrink)

Immanuel Kant defines virtue as a kind of strength and resoluteness of will to resist and overcome any obstacles that oppose fulfilling our moral duties. Human agents, according to Kant, owe it to ourselves to strive for perfect virtue by fully committing ourselves to morality and by developing the fortitude to maintain and execute this life-governing policy despite obstacles we may face. This essay reviews basic features of Kant’s conception of virtue and then discusses the role of emotions, a motive (...) of duty, exemplars, rules, and community in a virtuous life. Kant thinks that striving to be more virtuous requires not only respect for moral principles and control of our contrary emotions but also a system of legally enforced rules and communities of good persons. Exemplars and cultivated good feelings and emotions can also be useful aids along the way, but Kant warns us against attempting to derive our moral standards themselves from examples or feelings. The best any of us can hope for, in Kant’s view, is to make constant progress in our difficult struggle for moral perfection. (shrink)

Both the Athenian wrestler and the Florentine clerk, it turns out, demonstrate a persistent concern with the moral problematic--that is, the tendency of human beings to do what they want to do at the cost of that which they ought to do. Both thinkers see man's vulnerability to fortune as a symptom of this tendency, and they agree as to its ultimate cause: the inability of men to accurately weigh that which is present here and now against that which is (...) far removed in time and space. Machiavelli does not part company with Plato until it is time to suggest a remedy. Here he indeed accomplishes a radical innovation--perhaps as radical as was suggested above. Whereas Plato resolves the problematic by founding the soul on that which is, and which is better than and prior to man, Machiavelli supposes that man, starting from scratch, can construct his own foundations. Nonetheless, the Florentine walks a long way with the Athenian before he takes his leave; it may be best, then, to interpret Machiavelli's writing less as a monologue than as a dialogue, the dramatis personae of which include himself and Plato. (shrink)

This chapter describes and illustrates ideals of appreciation and positive expressions of respect in personal relationships and then argues that these are distinct from beneficence, that they are aspects of a full recognition of human dignity, and that they have important general and special implications for relationships involving persons with disabilities. The chapter emphasizes that especially among family, friends, and caregivers, proper respect for persons calls for positive affirmations and being open to appreciate the good in others and their lives (...) and that appreciating them is more than respecting them and caring for their comfort and happiness. Respect and appreciation for and by us, as persons with disabilities, requires confronting and changing cultural stigmas that undermine these morally important attitudes. (shrink)

Este artigo busca mostrar, por meio de uma análise da refutação kantiana do idealismo empírico, que Kant é ainda assim partidário de certo solo mentalista inaugurado por Descartes. Ao mesmo tempo, ele recusa as implicações solipsistas de qualquer idealismo material, seja o de Descartes, seja o de Berkeley.

Contexto: Algumas experiências religiosas e/ou espirituais apresentam um caráter dissociativo. Há carência de estudos que indiquem critérios diferenciais entre a dissociação patológica e saudável em contexto religioso. Objetivo: Este estudo pretende observar as experiências dissociativas sob diferentes perspectivas: uma ligada à psicopatologia e a outra, à saúde. Método: Ensaio temático com a literatura disponível sobre o assunto. Bases de dados: Pubmed e PsychINFO. Também foi feita busca manual de artigos relacionados ao assunto. Resultados: 1. Historicamente, alguns autores se debruçaram sobre (...) as relações entre dissociação e fenômenos religiosos, mas os dados não são conclusivos; 2. A dissociação acontece em um continuum entre saúde e doença; 3. A psiquiatria transcultural oferece aporte para a compreensão de experiências dissociativas, como o transe de possessão, contextualizando-as culturalmente; 4. Há uma série de estudos feitos no Brasil, que exploram o diagnóstico diferencial entre experiências religiosas saudáveis e patológicas. Conclusões: Experiências religiosas/espirituais de caráter dissociativo, podem ser consideradas saudáveis se apresentarem ausência de sofrimento, controle, forem contextualizadas e trouxerem benefício para o indivíduo. Indivíduos sem Autodirecionamento e com experiências autocentradas mostram maior probabilidade de desenvolver patologia. Futuros estudos deverão explorar empírica e longitunalmente estas questões. (shrink)

At the beginning of the twenty-first century, with vocations to the Christian religious orders of the West in marked decline, an authentic Christian presence in health care is threatened. There are no longer large numbers of women willing to offer their life labors bound in vows of poverty, chastity, and obedience, so as to provide a real preferential option for the poor through supporting an authentic Christian mission in health care. At the same time, the frequent earlier death of men (...) leaves a large number of widows, some in need of care and some able to provide care. Drawing on the role of widows sketched in I Timothy 2, one can envision Christian widows entering a life of prayer and service in health care settings. As female monastics, such widows could reintroduce a salient Christian presence in health care. How one ties this response to the message of I Timothy 2 will depend on one’s understanding of the status of Scripture, the significance of tradition, the nature of theological epistemology, the meaning of theology, the nature of the Church, and the ontology of gender. The position taken on these issues will define the character of a Christian bioethics of care. (shrink)

Myra Hird and Harlan Weaver have been invited by the editors of this special issue to enter into discussion with each other – to conduct a series of interchanges – because of the careful attention their research has paid to the ways in which transness as a lived reality is ontologized in humans, non-human animals, bacteria, and viruses. With this issue’s interchanges, we would like to further the conversation on critically approaching the consequences of merging transness with animality. In (...) the following series of four essay questions, we particularly invited each of these scholars to consider moments of classificatory tension in which taxonomies of human and non-human become inflected and redirected by the categories of race, gender, sexuality, class, ability, and geopolitical location. (shrink)

Hird, G.R., Recursive properties of relations on models, Annals of Pure and Applied Logic 63 241–269. We prove general existence theorems for recursive models on which various relations have specified recursive properties. These capture common features of results in the literature for particular algebraic structures. For a useful class of models with new relations R, S, where S is r.e., we characterize those for which there is a recursive model isomorphic to on which the relation corresponding to S remains (...) r.e., while that corresponding to R is not r.e.; immune; hyperimmune. The results are applied to vector spaces, Boolean algebras and abelian groups. In the case of vector spaces, this leads to a new kind supermaximal subspace of V∞. (shrink)

In Sex, Gender and Science , Myra Hird outlines the social study of science and nature, specifically in relation to sex, sex differences, and sexuality. She examines how Western understandings of sex are based less upon understanding material sex differences than on a discourse that emphasizes sex dichotomy over sex diversity and argues for a feminist engagement with scientific debate that embraces the diversity and complexity of nature.

Nigel Clark’s ‘ex-orbitant globality’ concerns the incalculability of other-than-human forces we typically fail to acknowledge, yet which haunt all considerations of environmental change. This article considers Gaia theory as a useful heuristic to register the ubiquity of bacteria to environmental activity and regulation. Bacteria are Gaia theory’s fundamental actants, and through symbiosis and symbiogenesis, connect life and matter in biophysical and biosocial entanglements. Emphasizing symbiosis might invoke the expectation of a re-inscription of the human insofar as the ubiquitous inter-connectivity of (...) life ultimately connects everything to the human. I want to argue toward the opposite conclusion: that bacterial liveliness suggests a profound indifference to human life. As such, symbiosis does not efface difference, nor its vigorous refusal to be absorbed within human formulations of world-remaking, including environmental change. Bacterial indifference’s radical asymmetry suggests the need for non-human centred theories of globality. (shrink)

Ten years after the publication of the special issue of Social Epistemology on feminist epistemology, this paper explores recent feminist interest in the inhuman. Feminist science studies, cultural studies, philosophy and environmental studies all build on the important work feminist epistemology has done to bring to the fore questions of feminist empiricism, situated knowledges and knowing as an intersubjective activity. Current research in feminist theory is expanding this epistemological horizon to consider the possibility of an inhuman epistemology. This paper explores (...) these developments through the subject of waste. Waste, as both an epistemological and material phenomenon, invites timely questions about possibilities for acknowledging an inhuman epistemology. These questions appear to be particularly urgent from an environmental perspective. (shrink)

Canada is the world’s highest per capita municipal solid waste producer. By 2000, Canadians produced more annual waste per person than Americans; and by 2005, Canada produced nearly twice as much garbage as Japan (Conference Board of Canada 2008). By 2006, Canadians produced over 1000 kg of waste per person; 35 million tons of waste in a single calendar year (Statistics Canada 2008). The bulk of this waste ended up in landfills (ibid). In 2010, thirty percent of existing Canadian landfills (...) reached or surpassed capacity. Over one million tons of waste were exported out of Canada in 2002, much of it headed from southern Ontario to rural regions of Canada or to the United States (Statistics Canada 2005). Some cities .. (shrink)

Sociology of Science: A Critical Canadian Introduction provides an overview of how sociology approaches science and, to a lesser extent, technology. It examines how science developed as a set of theories about both what we know and how we know. The book provides a succinct critical examination of the current state of science studies with a particular emphasis on research conducted by Canadian scholars. Hird illustrates that science studies offers useful perspectives on current and ongoing sociological debates, such as (...) the strengths and limitations of social constructionism, as well as popular public debates, such as the ethics of stem-cell research. Using examples from throughout history and with a focus on the Canadian context, the book provides students with an examination of influential science studies concepts, theories, and debates and situates these theories and debates within contemporary field of sociology. (shrink)

The distinction between ‘sex’ and ‘gender’ is challenged by arguments that ‘sex’ is equally a social construction, initiating a selfreflexive effort to return feminism to its foundational grounding. This article concerns intersexuality and transsexualism as two bodily forms that further suggest ‘sex’ as socially inscribed. I argue that feminist theory needs to ascertain whether the artificial emphasis on sexual difference, contra nature, is better able to effect social change than conjoined efforts to expose ‘sex’ as a construction intended to ground (...) divisions. Recent support for ‘multiple genders’ often remain dependent on a morphological notion of ‘sex’, and, as such, may not constitute a radical challenge to our current ‘sex’/‘gender’ system. (shrink)

Waste is a major global environmental issue that assembles socio-cultural and bio-geological processes in complex indeterminate relationships. Drawing on three case studies, this article explores the shifting environmental politics concerned with waste’s material, economic, political, and cultural ‘management’. The Canadian case studies – determining a new waste management technology in a mid-sized city in central Ontario, an open dump in a remote Nunavut community, and an abandoned gold mine in the Northwest Territories – suggest waste occasions particular material and political (...) mobilizations. Landfill leachate, colonialism, disinterested publics, freezing arsenic, global corporate investments, country food, land claims, neoliberal governance, permafrost, ravens, and a host of other socio-material forces both empower and thwart ‘management’ politics. Through these case studies, this article explores Isabelle Stengers’s assertion that participating citizenship is an ‘Empty Great Idea’, and a provocation to consider the contexts in which waste may generate acquiescent or objecting publics. (shrink)

Feminist analyses have made important contributions to the sociocultural experiences of pregnancy, birth and breastfeeding. This article draws upon recent theorizing within science studies to focus on the mattering of these processes. Specifically, the article expands upon Mauss's notion of the ‘gift’, which Diprose develops through the idea of ‘corporeal generosity’. I am interested in corporeal generosity insofar as it circumvents descriptions of relationships in terms of a closed economy in which resources are exchanged without excess or remainder. Corporeal generosity (...) refers to the often missed but nevertheless inescapable debt that a body owes to other bodies. At the same time, this embodied ‘gifting’ is both unpredictable and intrusive – there is as much possibility of threatening the integrity of bodies as there is of opening new possibilities. (shrink)

Feminist philosophical analyses have recently returned to psychoanalytic theory's insights into the origins of gender. Freud's exegesis on social development holds gender to be a matter of identification, as opposed to an ontological condition of being. This article considers Judith Butler's use of psychoanalytic theory to argue that homosexuality both precedes and conditions the formation of heterosexual gender identification. While convinced the processes of identification do involve loss and are grieved in some way, I am less convinced that the precedence (...) of either heterosexuality or homosexuality can be logically sustained. I suggest that Butler's political commitment to subvert the hetero-normative gender system leads to a conflation of identification with desire, two distinct processes involving different psychic mechanisms. I want to argue that all gender is melancholic, as any restriction of pleasures entails loss; but the closer to the dominant heteronormative system the greater that failure. (shrink)

Summary John Harrison (1693–1776) is regarded as the father of chronometry. During his lifetime, he relentlessly pursued one of humankind's greatest and oldest challenges—that of finding the longitude at sea. In succeeding (according to the rules dictated by an Act of Parliament), he bequeathed to humankind the most accurate portable timekeeper the world had ever seen. It is a remarkable fact that his timekeeper, known today as H4, remains more accurate than the majority of expensive mechanical wristwatches manufactured today. Such (...) accuracy required novel approaches to address the various difficulties that befall all mechanical watches, and Harrison overcame many of these with his own innovations. The reduction or elimination of friction is one such problem with clocks and watches, and from an early age Harrison demonstrated his mastery in this subject. This is typified by his choice of woods in his early clocks, and in later clocks by his ‘grasshopper’ escapement. In the 1750s, Harrison's attention switched from clocks to watches, necessitating a hardwearing, low friction material to be found for the pallets in the escapement of his timekeepers. He found these properties in diamond, and in utilizing this to great effect in H4's escapement, he became one of the first people to use diamond as a high-tech material. This paper describes a scientific investigation into the diamond pallets of H4 using Raman microscopy, X-ray diffraction and optical microscopy, to elucidate why diamond was used rather than a more conventional jewel such as ruby, and to gain some insight into how Harrison might have achieved their unconventional morphology. From the evidence presented here, together with evidence collected from primary sources, it is shown that his use of diamond as a hard, low friction material was nothing other than extraordinary, and should be regarded in the same high esteem as his other technological gifts to the world. (shrink)