Quantum mechanical measurements on a physical system are represented by observables - Hermitian operators on the state space of the observed system. It is an important question whether all observables may be realized, in principle, as measurements on a physical system. Dirac’s influential text ( , page 37) makes the following assertion on the question: The question now presents itself – Can every observable be measured? The answer theoretically is yes. In practice it may be very awkward, or perhaps even (...) beyond the ingenuity of the experimenter, to devise an apparatus which could measure some particular observable, but the theory always allows one to imagine that the measurement can be made. This Letter re-examines the question of whether it is possible, even in principle, to measure every quantum mechanical observable. Unexpectedly, ideas from com-. (shrink)
We present a comprehensive study of data for the dielectric relaxation of ten glass-forming organic liquids at high-pressure along isotherms, showing that the primary (α) high-frequency relaxation is well-characterized by the minimum slope and the width of the loss peak. The advantage of these two parameters is that they are model independent. For some materials with ? processes in the mHz and kHz range, the high-frequency slope tends to be with pressure increase. In addition, the two parameters capture the relaxation (...) shape invariance at a given relaxation time but different combinations of pressure and time. (shrink)
Some theorists, worried about liberalism’s potential as a foundation for public health ethics, suggest that republicanism provides a better background of justification for public health policies, interventions, etc. In this article, this suggestion is put to the test, and it is argued that (i) contemporary (civic) republicanism and liberalism are not nearly as opposed as it is sometimes suggested, and that (ii) the kind of republicanism which one leading scholar in the field, Bruce Jennings, as an alternative to liberalism, does (...) not reflect the contemporary understanding of republicanism as held by, e.g. Phillip Pettit et al. (shrink)
The objective of this paper is to outline challenges associated with the inclusion of welfare issues in breeding goals for farm animals and to review the currently available methodologies and discuss their potential advantages and limitations to address these challenges. The methodology for weighing production traits with respect to cost efficiency and market prices are well developed and implemented in animal breeding goals. However, these methods are inadequate in terms of assessing proper values of traits with social and ethical values (...) such as animal welfare, because such values are unlikely to be readily available from the product prices and costs in the market. Defining breeding goals that take animal welfare and ethical concerns into account, therefore, requires new approaches. In this paper we suggest a framework and an approach for defining breeding goals, including animal welfare. The definition of breeding goals including values related to animal welfare requires a multidisciplinary approach with a combination of different methods such as profit equations, stated preference techniques, and selection index theory. In addition, a participatory approach involving different stakeholders such as breeding organizations, food authorities, farmers, and animal welfare organizations should be applied. We conclude that even though these methods provide the necessary tools for considering welfare issues in the breeding goal, the practical application of these methods is yet to be achieved. (shrink)
The analysis of 'mixed acts' in Nicomachean Ethics III, 1 has led scholars to attribute a theory of 'dirty hands' and 'impossible oughts' to Aristode. Michael Stocker argues that Aristode recognizes particular acts that are simultaneously 'right, even obligatory', but nevertheless 'wrong, shameful and the like'. And Martha Nussbaum commends Aristotle for not sympathizing 'with those who, in politics or in private affairs, would so shrink from blame and from unacceptable action that they would be unable to take a necessary (...) decision for the best'. In this paper I reexamine Aristotle's analysis of putatively 'mixed acts' in Nicomachean Ethics III, 1, maintaining that Aristode denies that there are acts that are (i) voluntary under the circumstances, (ii) right, all things considered, under the circumstances, but nevertheless (iii) shameful or wrong for moral or prudential reasons under the circumstances. The paper defends this interpretation with reference to Aristode's discussion of shame in EN IV, 9 and Rhetoric II, 6, as well as his overall meta-ethical commitment to a position I call 'mitigated circumstantial relativism'. By focusing on Aristotle's analysis of putatively 'mixed acts', we come closer to a true appreciation of Aristode's ethical theory, even though 'mixed act' is not, I argue, a category in Aristode's considered ontology of action. (shrink)
In this paper I examine Aristotle's account of sexual difference in Generation of Animals, arguing that Aristotle conceives of the production of males as the result of a successful teleological process, while he sees the production of females as due to material forces that defeat the norms of nature. My suggestion is that Aristotle endorses what I call the "degrees of perfection" model. I challenge Devin Henry's attempt to argue that Aristotle explains sex determination exclusively with reference to material necessity (...) (in particular, levels of "vital heat" in the male semen), for Aristotle's notion of "sufficient" or "deficient" vital heat is itself teleological. If, as Aristotle is aware, male and female embryos appear with approximately equal frequency in most species, how, in light of Physics II, can he conceive of the former as in accordance with nature, and the latter as somehow contrary to nature? My proposal is that Aristotle's notion of what happens usually (ως επì τò πoλυ) is bifurcated: the usual need not be more frequent. (shrink)
This article examines Aristotle's model of deliberation as inquiry (zêtêsis), arguing that Aristotle does not treat the presumption of open alternatives as a precondition for rational deliberation. Deliberation aims to uncover acts that are up to us and conducive to our ends; it essentially consists in causal mapping. Unlike the comparative model presupposed in the literature on deliberation, Aristotle's model can account for the virtuous agent's deliberation, as well as deliberation with a view to “satisficing” desires and deliberation that fails (...) to uncover any expedient course of action. Aristotle's account of the constraints governing rational deliberation is furthermore not incompatibilist—for all Aristotle says, we may deliberate rationally despite being committed to the truth of determinism. (shrink)
If it is true, as suggested by Sir Michael Marmot and other researchers, that status impacts health and therefore accounts for some of the social gradient in health, then it seems to be the case that it would be possible to bring about more equality in health by equalizing status. The purpose of this article is to analyze this suggestion. First, we suggest a working definition of what status precisely is. Second, following a luck egalitarian approach to distributive justice, we (...) consider whether and to which extent individuals are responsible themselves for their position in a status hierarchy. Third, we consider the contours of a difficult question, namely which political measures are feasible in order to reduce health-affective inequalities in status and fourth, whether or to what extent such measures are legitimate. We argue that on the basis of these considerations, we have at least some prima facie reasons to counter (at least some) status inequalities in order to equalize health. (shrink)
Post-conflict economies often prove daunting for foreign investors. Many of these nations are reaching out to diasporans, emigrants, and their descendants living abroad, for much-needed foreign investment capital. Little is known about why diasporans invest in their countries of origin. Recent scholarly inquiry regarding investment decision making has suggested that non-pecuniary, psychological concerns often motivate investment decisions. We develop a conceptual model identifying three types of investment return expectations — financial, emotional, and those related to social status — that may (...) drive diaspora investment interest. We contend that the psychological realities and social-status structure of the diaspora experience generate greater salience for non-pecuniary investment motivations, particularly when the origin country emerges from a period of conflict. We outline an agenda for future research and discuss the implications of our model for policies seeking to promote peace utilizing diaspora investment. (shrink)
Three epitaxial silicon layers, grown under varying conditions in the presence of small quantities of gold, are examined, both before and after etching, by transmission and scanning electron microscopy. The results show that the presence of an extremely thin silicon/gold alloy layer (< 100 Å) on the growing surface can extensively alter the growth characteristics. Two possible growth mechanisms involving such an ultra-thin alloy layer are outlined.
A study found that women participating in mammography screening were content with the programme and the paternalistic invitations that directly encourage participation and include a pre-specified time of appointment. We argue that this merely reflects that the information presented to the invited women is seriously biased in favour of participation. Women are not informed about the major harms of screening, and the decision to attend has already been made for them by a public authority. This short-circuits informed decision-making and the (...) legislation on informed consent, and violates the autonomy of the women. Screening invitations must present both benefits and harms in a balanced fashion, and should offer, not encourage, participation. It should be stated clearly that the choice not to participate is as sensible as the choice to do so. To allow this to happen, the responsibility for the screening programmes must be separated from the responsibility for the information material. (shrink)
This paper argues that “distributed cognition” facilitates a framework for studying aspects of organizations as socio-technical systems. An approach studying tool use and workflows is laid out and utilized in an analysis of information processing at a post office. Finally, some implications are presented – for organizational as well as cognitive studies. Research on performative representations is called for and, consequently, a widening of the cognition-as-computation framework is suggested.
Solms shows the cortical basis for why dreams reflect waking concerns and goals, but with deficient volition. I argue the latter relates to Hobson et al.'s process I as well as M. A memory function for REM sleep is possible, but may be irrelevant to dream characteristics, which, contrary to Revonsuo, mirror the range of waking emotions, positive and negative. [Hobson et al.; Nielsen; Solms; Revonsuo; Vertes & Eastman].
Reason and quest for revelation, by P. Tillich.--On the ontological mystery, by G. Marcel.--The problem of non-objectifying thinking and speaking, by M. Heidegger.--The problem of natural theology, by J. Macquarrie.--Metaphysical rebellion, by A. Camus.--Psychoanalysis and religion by E. Fromm.--Why I am not a Christian, by B. Russell.--The quest for being, by S. Hook.--The sacred and the profane; a dialectical understanding of Christianity, by T. J. J. Altizer.--Three strata of meaning in religious discourse by C. Hartshorne.--The theological task, by J. B. (...) Cobb.--Theology and objectivity, by S. A. Ogden.--Can faith validate God-talk? by K. Nielsen.--The logic of God, by J. Wisdom.--Mapping the logic of models in science and theology, by F. Ferré.--On understanding mystery, by I. T. Ramsey.--Teilhard de Chardin; a philosophy of precession, by E. R. Baltazar.--The nature of apologetics, by H. Bouillard.--Metaphysics as horizon, by B. Lonergan.--Deciding whether to believe, by M. Novak. (shrink)
Nielsen's model presents a new isomorphic brain-mind viewpoint, according to which the sole dream generator is found in a REM-on (explicit or covert REM) mechanism. Such a model cannot explain the dreamlike activity during SWS (slow wave sleep), SO (sleep onset) and in the last period of sleep. Moreover the hypothesis contrasts with Solms's data, which show that dreaming is present also in case of destruction of the REM generator. [Nielsen; Solms].