Definition is in the nature of a survey, and a major part of its original purpose would seem to be to introduce a Soviet audience to definition rules used in the formal systems of mathematical logic. It offers a sympathetic introduction to the work of writers like Church, Curry, Kleene, Carnap, and Reichenbach.

We report the identification of a recurrent, 520-kb 16p12.1 microdeletion associated with childhood developmental delay. The microdeletion was detected in 20 of 11,873 cases compared with 2 of 8,540 controls and replicated in a second series of 22 of 9,254 cases compared with 6 of 6,299 controls. Most deletions were inherited, with carrier parents likely to manifest neuropsychiatric phenotypes compared to non-carrier parents. Probands were more likely to carry an additional large copy-number variant when compared to matched controls. The clinical (...) features of individuals with two mutations were distinct from and/or more severe than those of individuals carrying only the co-occurring mutation. Our data support a two-hit model in which the 16p12.1 microdeletion both predisposes to neuropsychiatric phenotypes as a single event and exacerbates neurodevelopmental phenotypes in association with other large deletions or duplications. Analysis of other microdeletions with variable expressivity indicates that this two-hit model might be more generally applicable to neuropsychiatric disease. © 2010 Nature America, Inc. All rights reserved. (shrink)

In 1885, during initial discussions of J. C. Maxwell's celebrated thermodynamic demon, Whiting (1) observed that the demon-like velocity selection of molecules can occur in a gravitationally bound gas. Recently, a gravitational Maxwell demon has been proposed which makes use of this observation [D. P. Sheehan, J. Glick, and J. D. Means, Found. Phys. 30, 1227 (2000)]. Here we report on numerical simulations that detail its microscopic phase space structure. Results verify the previously hypothesized mechanism of its paradoxical behavior. This (...) system appears to be the only example of a fully classical mechanical Maxwell demon that has not been resolved in favor of the second law of thermodynamics. (shrink)

I shall unfold Kant’s views on three topics. Kant holds that knowledge of anything’s existence is obtained only by existential judgments. He distinguishes several respects in which the predicate of such a judgment differs from other predicates. In the light of these, Kant sets forth what is required for verifying existential judgments.

The introduction of conscience clauses after the 1973 US Supreme Court decision in Roe v. Wade allowed physicians and nurses to opt out of medical procedures, particularly abortions, to which they were morally opposed. In recent years pharmacists have requested the same consideration with regard to dispensing some medicines. This paper examines the pharmacists’ role and their professional and moral obligations to patients in the light of recent refusals by pharmacists to dispense oral contraceptives. A review of John Rawls’s concepts (...) of the “original position” and the “veil of ignorance”, along with consideration of the concept of compartmentalisation, are used to assess pharmacists’ requests and the moral and legal rights of patients to have their prescriptive needs met. (shrink)

We report the results of a randomized trial to assess the impact of an innovative ethics curriculum on the knowledge and confidence of 85 medical house officers in a university hospital programme, as well as their responses to a simulated clinical case. Twenty-five per cent of the house officers received a lecture series, 25 per cent received lectures and case conferences, with an ethicist in attendance, and 50 per cent served as controls. A post-intervention questionnaire was administered. Knowledge scores did (...) not differ among the groups. Confidence regarding ethical issues was significantly greater in the aggregate intervention group compared to the control group. Confidence regarding procedural issues related to ethics was significantly higher for the EI group than for the controls. Responses to a simulated case showed that significantly fewer house officers in the EI group would intubate a patient for whom such therapy would be futile. We conclude that ethics education can have an impact on house officers' confidence and their responses to a simulated case, and that the EI was more effective than the LI. Such results have implications regarding the implementation of ethics education during residency. (shrink)

(1997). Significant redefinitions: A meta‐analysis of aspects of recent developments in initial teacher education in England and Wales. Educational Philosophy and Theory: Vol. 29, No. 2, pp. 102-118. doi: 10.1111/j.1469-5812.1997.tb00023.x.

In 2000, a simple, foundational thermodynamic paradox was proposed: a sealed blackbody cavity contains a diatomic gas and a radiometer whose apposing vane surfaces dissociate and recombine the gas to different degrees (A $_{2} \rightleftharpoons $ 2A). As a result of differing desorption rates for A and A $_{2}$ , there arise between the vane faces permanent pressure and temperature differences, either of which can be harnessed to perform work, in apparent conflict with the second law of thermodynamics. Here we (...) report on the first experimental realization of this paradox, involving the dissociation of low-pressure hydrogen gas on high-temperature refractory metals (tungsten and rhenium) under blackbody cavity conditions. The results, corroborated by other laboratory studies and supported by theory, confirm the paradoxical temperature difference and point to physics beyond the traditional understanding of the second law. (shrink)

In the Journal of Medical Ethics, Joffe et al recently published an article titled “What do patients value in their hospital care? An empirical perspective on autonomy centred bioethics”.1 This empirical study evaluates whether patients’ willingness to recommend their hospital to others is more strongly associated with their belief that they were treated with respect and dignity than with their belief that they had an adequate say in their treatment.* Joffe et al go on to suggest that confirmation of these (...) empirical hypotheses would constitute a prescription for elevating the principle of respect for persons to the level that the principle of respect for autonomy currently enjoys in our model of the ideal patient–physician relationship .1 In other words, they suggest that by some means empirical findings could influence our ranking of the normative principles. Earlier in the article, they make an even stronger claim about the influence of empirical data on our acceptance of normative principles. They suggest that, if it were demonstrated empirically that some patients prefer to delegate medical decisions to health care professionals, a serious challenge would be levied against the normative assumptions underlying the principle of respect for autonomy, at least under the mandatory autonomy view, which holds that patients not only have a right but also an obligation to act autonomously .1 In the light of many recent empirical studies challenging the centrality of patient autonomy and shared decision making in bioethical theory, I think it is instructive to evaluate the means by which empirical findings, like those offered in Joffe et al, strengthen or weaken our arguments for ethical principles. In particular, I would be interested in how these authors propose that their data led them to the normative conclusions they reached.In the last …. (shrink)

OBJECTIVES: To study the accuracy of reviewing ward notes (chart review) as a measure of the quality of care rendered to patients with "Do Not Resuscitate" (DNR) orders. DESIGN: We reviewed the charts of 19 consecutive, competent inpatients with DNR orders for evidence that the staff addressed a broad range of patient care needs called Concurrent Care Concerns (CCCs), such as withholding treatments other than resuscitation itself, and attention to patient comfort needs. We then interviewed the patient, consultant physician, house (...) officer, and primary nurse and compared the ward notes with the understandings of these staff members. SETTING: The medical service of an urban university medical centre. RESULTS: The average number of documented CCCs addressed per DNR order was 1.1. The ward notes generally agreed with the perceptions of patients, house officers, and nurses (% agreement with notes = 79%, 77%, and 82%; kappa = 0.43, 0.40, 0.50). Consultant physicians' understandings were poorly reflected in the ward notes (% agreement = 59%; kappa = 0.18). They overestimated attention to CCCs compared with the notes (P < 0.0001) and with other observers (P < 0.0001). CONCLUSION: Chart review for attention to CCCs accurately reflects the understandings of patients, house officers, and nurses, but consultant physicians report more attention to CCCs than is recorded in the ward notes or understood by other observers. Better communication regarding end-of-life care plans should be encouraged. (shrink)

A recently formulated concept of stochastic localizability is shown to be consistent with a concept of stochastic microcausality, which avoids the conclusions of Hegerfeldt's no-go theorem as to the inconsistency of sharp localizability of quantum particles and Einstein causality. The proposed localizability on quantum space-time is shown to lead to strict asymptotic causality. For finite time evolutions, upper bounds on propagation to the exterior of stochastic light cones are derived which show that the resulting probabilities are too small to be (...) actually observable in a realistic context. (shrink)

The empirical level of research in the experimental sciences always involves description of what is found by observation and experimentation. These descriptions most often take the form of tables of various sorts . In the process of compiling tables of functions, the method of smoothing-out data plays a significant role. It is often performed by graph procedures. This work results in the formulation of laws, general relationships, which are clothed, in mathematical natural science, in the form of empirical or semi-empirical (...) equations. (shrink)

Jonathan Bennett has produced a sequel to his book on the first half of the Critique of Pure Reason. He does not try to cover all the rest of the Critique. He restricts himself to the Transcendental Dialectic. He rightly claims that his is the only book in English treating exclusively of the Dialectic as a whole. It is not written as a commentary dealing with passage by passage. Many passages are left untreated. A distinctive merit is his extensive comparison (...) of Kant with Descartes and Leibniz. (shrink)

Mill is neither an act-utilitarian nor a rule-utilitarian. Although he professes to regard “utility as the ultimate appeal on all ethical questions”, he in fact makes no appeal to it in determining in Utilitarianism what actions are “of more absolute obligation than any others”. Nor does he appeal to it in his arguments for the two main conclusions of his essay, On Liberty.

OBJECTIVE: To examine the long-term effects of an innovative curriculum on medical house officers' (HOs') knowledge, confidence, and attitudes regarding medical ethics. DESIGN: Long term cohort study. The two-year curriculum, implemented by a single physician ethicist with assistance from other faculty, was fully integrated into the programme. It consisted of monthly sessions: ethics morning report alternating with didactic conferences. The content included topics such as ethics vocabulary and principles, withdrawing life support, informed consent, and justice. Identical content was offered simultaneously (...) at the largest affiliated community hospital. SETTING: A multi-hospital university training programme from July, 1992 to June, 1994. PARTICIPANTS: Thirty-nine HOs responded in 92. Thirty HOs from the same cohort responded in 94 (response rates = 83% v 71%; P = 0.19). RESULTS: The curriculum was well received, with 96% of HOs finding the sessions stimulating. Previously validated scales of knowledge and confidence were administered at baseline and at follow-up. The average knowledge score improved 14% (P < 0.001). Confidence also improved, rising from 3.3 to 3.8 on a 5-point Likert scale (P < 0.001). These findings were independent of age, gender, religion, and prior education. The only attitudinal change was an increase in the proportion of residents who thought that ethics should be a required part of residency training (57% v 80%, P = 0.05). CONCLUSION: This curriculum appears practical, popular, and effective. It should be readily transferable to other institutions. (shrink)