Provision of additional food supplements for the purpose of biological conservation has been widely researched both theoretically and experimentally. The study of these biosystems is usually done using predator–prey models. In this paper, we consider an additional food provided predator–prey system in the presence of the inhibitory effect of the prey. This model is analyzed in the control parameter space using the control parameters, quality and quantity of additional food. The findings suggest that with appropriate choice of additional food to (...) predators, the biosystem can be controlled and steered to a desirable state. It is also possible to eliminate either of the interacting species. The vital role of the quality and quantity of the additional food in the system dynamics cautions the eco manager on the choice of the additional food for realizing the goal in the biological conservation programme. (shrink)

This study examined the relationship between unethical employee behavior and the dimensions of the Ethical Climate Questionnaire (ECQ). In order to explore the relationship between the dimensions of the ECQ and unethical behavior, the factor structure of five previously identified empirical models and the hypothesized nine-dimension model for the ECQ was tested with a confirmatory factor analysis. The analysis revealed that the hypothesized nine-dimension model provided as good or even better fit to the data than the five empirically derived models. (...) Therefore, the nine-dimensional model was used to examine the criterion-related validity of the ECQ. The results demonstrated that the nine ethical climate dimensions were correlated with some of the unethical behaviors examined in this study, but not others. However, the results clearly demonstrated that most of the ethical climate dimensions were significantly related to an aggregate measure of unethical behavior. It was suggested that these results might account for the differences in previous studies on the criterion-related validity of the ECQ. The results also replicated a previous report that the association between unethical behavior and ethical climate is stronger in organizations that do not have a code of ethics. Finally, a difference was observed in the ethical climates for organizations with a code of ethics and organizations without a code of ethics. (shrink)

Weil’s essay on Homer’s Iliad contains a philosophical analysis of la force that divides it into two phenomena with one metaphysical ground. Her analysis is a corrective to misunderstandings of force as something that can be possessed. The first half of my elaboration of Weil’s analysis is devoted to the phenomena she identifies in relation to la force, which I call might. In the second half, I elaborate the varieties of misunderstanding of la force. First, might is an illusion sustained (...) by the shared belief of those in submission to might. Second, forces, i.e. the material forces on which weaponry depends, cannot be possessed. Third, what lies behind material forces is necessity, a third meaning of la force, which functions as a superordinate or ultimate force to which everyone and everything is subject. Understanding the last of these is the corrective that Weil means to present. (shrink)

Context: Few professional philosophers have addressed in any detail radical constructivism, but have focused instead on the related assumptions and limitations of postmodern epistemology, various anti-realisms, and subjective relativism. Problem: In an attempt to supply a philosophical answer to the guest editors’ question, “Why isn’t everyone a radical constructivist?” I address the realist (hence non-radical) implications of the theory’s invocation of “others” as an invariable, observer-independent, “external” constraint. Results: I argue that constructivists cannot consistently defend a radically subjectivist theory of (...) knowing while remaining entirely agnostic about the nature and existence of the larger world (including independent others). That is, any non-solipsistic account of human experience must explicitly acknowledge its extra-subjective, ontological dimension. Implications: It follows that no pedagogical, social, philosophical, or commonsensical insight associated with so-called “trivial” or “social” constructivism survives or receives any support from the move to radical constructivism. (shrink)

In 1982, Jonsen, Siegler and Winslade published Clinical Ethics, in which they described the “four quadrants” approach, a new method of analysing clinical ethics cases. Although the book is now in its 6th edition, a literature search has revealed only one academic paper demonstrating the method at work. This paper is an attempt to start filling this gap. As a way of describing and testing the approach, I apply the four quadrants method to a detailed clinical ethics case. The analysis (...) is interspersed with reflections on the method itself. It is hoped that this experiment will encourage ethicists and clinicians to devote more attention to this neglected approach. (shrink)

Scientific developments of the last 20 years have made the transplantation of cadaveric solid organs a viable and expected treatment alternative for patients suffering from various forms of End Stage Organ Disease. Of the number of organs that could be utilized for this, only a small percentage of them are actually made available. North American legislation explicitly categorizes the transfer of cadaveric organs as an anatomical or tissue “gift”. The concept of the gift is mediated by transculturally consistent unwritten, but (...) powerfully felt, rules of conduct. Among the most profound elements of the concept is the obligatory gift-exchange which is central to the gift-relationship. Obviously, neither of these are permitted by the organ transplant scenario. As a result, dissonance is created within the thought process of the individual which cannot be easily resolved, paralyzing many into inaction. We maintain that the present legal framework, designed to facilitate the transfer of organs, clashes with the human phenomenon of giving, and may actually prevent organs from being made available. In a search for a solution to this gift-relationship dilemma, giving organs is contrasted with taking organs as a basis upon which to ground ethically sound public policy. Liberty-limiting principles and the concept of harm are considered within this context. (shrink)

I question whether the flourishing that McMullin presents as negotiating the demands of three distinct normative domains is itself normative. If it is, I argue it must be incremental in some way to...

This work is a volume in the series Ancient Commentators on Aristotle, edited by Richard Sorabji. The aim of the series is to make the Greek commentaries available in English. Konstan does an admirable job of this. The translation is extremely careful, clear, and readable. Konstan succeeds in staying close to the text without sacrificing intelligibility. Whenever necessary, he inserts words or phrases in brackets to complete the sense of an accurately translated passage. Konstan also makes use of brackets to (...) give precise citations to fill out Simplicius' references. The footnotes, too, are excellent. There the reader finds information about deviations from Diels's text, about alternative readings, and explanations of renderings into English that might be controversial. In the introduction, Sorabji gives a thumbnail sketch of the philosophical issues raised by Physics 6. Several useful documents are appended to the commentary, namely, a list of all departures from Diels's text, an appendix written by the editor providing a brief survey of the ancient Greek commentators, and a list of the philosophers cited by Simplicius with a onesentence description of each. (shrink)

Suppose that John asks, ‘Is the window open?’ and Mary replies, ‘The window is open.’ Then John and Mary have produced two distinct utterances, and in doing so, they have performed two different kinds of speech act. But clearly there is something that these utterances have in common. According to the standard theory of speech acts, in these utterances different illocutionary forces have been applied to the same propositional content. Similarly, if John and Mary both believe that roses are red, (...) the same propositional content is attributed to their individual mental states.The propositional contents of utterances and beliefs have traditionally been identified with propositions. In turn, propositions have been characterized as language-independent particulars that can be re-identified in different contexts. In this article, I will argue that various phenomena that have hitherto been explained by propositions are better understood in terms of propositional acts. (shrink)

In his 1987 book _Conditionals, Frank Jackson presents an argument to the effect that the indicative conditionals of natural language have the same truth conditions as the material conditional of truth-functional logic. This Jackson refers to as the "paradox of indicative conditionals." I offer a solution to this paradox by arguing that some conditionals that appear to be in the indicative mood are actually subjunctives, to which the paradox does not apply. I support this proposed solution with some historical observations (...) on the evolution of the English verb phrase. (edited). (shrink)

It is conventional to try to arrive at the Boltzmann principle and the Second Law starting with the laws of dynamics at the microscopic level. In this article the opposite view is presented: Starting with the Second Law, microscopic properties are derived. A classical result of Wien is developed into a general theorem, and the possibility of deriving the Boltzmann principle as a consequence of Carnot's theorem is discussed.

Theoretical and experimental studies on prey–predator systems where predator is supplied with alternate sources of food have received significant attention over the years due to their relevance in achieving biological conservation and biological control. Some of the outcomes of these studies suggest that with appropriate quality and quantity of additional food, the system can be steered towards any desired state eventually with time. One of the limitations of previous studies is that the desired state is reached asymptotically, which makes the (...) outcomes not easily applicable in practical scenarios. To overcome this limitation, in this work, we formulate and study optimal control problems to achieve the desired outcomes in minimum (finite) time. We consider two different models of additional food provided prey–predator systems involving Holling type IV functional response (with inhibitory effect of prey). In the first scenario, additional food is incorporated implicitly into the predator’s functional response with a possibility of achieving biological conservation through co-existence of species and biological control by maintaining prey at a level that is least harmful to the system. In the second, the effect of additional food is incorporated explicitly into the predator’s compartment with the goal of pest management by maintaining prey density at a very minimal damaging level. For both cases, appropriate optimal control strategies are derived and the theoretical findings are illustrated by numerical simulations. We also discuss the ecological significance of the theoretical findings for both models. (shrink)

The medical profession’s role should be limited to advice and informationThe medical establishment’s desire to interfere with the autonomous wishes of boxers seems at odds with the principle of respect for autonomy prevalent in contemporary biomedical practice. I argue that the role of the medical profession in boxing should be solely an advisory and informational one. In addition, the distinctions made between boxing and other high risk sports often rely on an insufficient knowledge of the sport. This leads to misdirected (...) criticisms and excessive emphasis on the colourful discourse of boxing, as opposed to the practice of boxing itself. Dr Herrera’s claim in his article that boxing differs from other sports in the acceptability of its acts outside the realm of sport is refuted.1 The importance of consent as a legitimising factor is highlighted, and a number of possible solutions to improve safety within the sport are tentatively suggested.In the United Kingdom, a competent adult may legally refuse medical treatment, irrespective of the severity of his condition or the validity of his reasons. With the pre-eminence of an autonomy based model of bioethics, respecting a patient’s wishes forms an integral part of acting in his best interests. It is puzzling, then, to find that the Australian Medical Association have called for a ban on boxing on the grounds that the activity is excessively hazardous to the health of boxers. The often mentioned principle of respect for autonomy is abandoned once the person drops the privileged title of “patient”. This suggests that being a patient …. (shrink)

The problem of the human individual and the multiple manifestations of the essence of that individual made its appearance along with that of human beings themselves. Having arisen at the dawn of history, as a product of the as-yet-primitive consciousness of the primeval human, this problem, constantly developing and changing in form in accordance with the socio-economic conditions of the life of society, is assuming increasingly pervasive significance. The mandate of the ancients to "Know thyself" today has the ring not (...) only of a troubling need for individual self-awareness, and therefore of a heuristic problem in natural science and philosophy, but also of a categorical social imperative. (shrink)