This book presents a mathematical programming approach to the analysis of production frontiers and efficiency measurement. The authors construct a variety of production frontiers, and by measuring distances to them are able to develop a model of efficient producer behaviour and a taxonomy of possible types of departure from efficiency in various environments. Linear programming is used as an analytical and computational technique in order to accomplish this. The approach developed is then applied to modelling producer behaviour. By focusing on (...) the empirical relevance of production frontiers and distances to them, and applying linear programming techniques to artificial data to illustrate the type of information they can generate, this book provides a unique study in applied production analysis. It will be of interest to scholars and students of economics and operations research, and analysts in business and government. (shrink)

The question 'Why should I obey the law?' introduces a contemporary puzzle that is as old as philosophy itself. The puzzle is especially troublesome if we think of cases in which breaking the law is not otherwise wrongful, and in which the chances of getting caught are negligible. Philosophers from Socrates to H.L.A. Hart have struggled to give reasoned support to the idea that we do have a general moral duty to obey the law but, more recently, the greater number (...) of learned voices has expressed doubt that there is any such duty, at least as traditionally conceived. (shrink)

Paul Churchland proposed a conceptual framework for translating reflectance profiles into a space he takes to be the color qualia space. It allows him to determine color metamers of spectral surface reflectances without reference to the characteristics of visual systems, claiming that the reflectance classes that it specifies correspond to visually determined metamers. We advance several objections to his method, show that a significant number of reflectance profiles are not placed into the space in agreement with the qualia solid, and (...) produce two sets of counterexamples to his claim for metamers. (shrink)

The coordinate-free methods of the preceding paper are illustrated in three problems. First, the electrodynamics of a homogeneous, isotropic, and gyrotropic medium is investigated; it is shown that such a medium can exhibit optical activity, and the propagation of a plane electromagnetic wave in such a medium is discussed. Then, the electrodynamics of a homogeneous system made anisotropic by a uniform external magnetic field is considered; a description of Faraday rotation is provided, the ionosphere being used in an example. Finally, (...) the reflection and refraction of a plane electromagnetic wave at the interface of two media are described by coordinate-free operators. (shrink)

In many systems, the tensors used to describe physical properties must acquire their structure from one vector. Knowledge of that fact alone leads to an interesting line of analysis for such systems. The analysis begins with a discussion of the types of dyadics that can be constructed from one vector. Attention is focused on certain exemplary dyadic operators, which, because of their geometrical properties, would appear particularly basic; the algebra of these dyadics is developed in detail. The algebra is then (...) used in a derivation of the expansion of general functions of these dyadics. Several applications of the general expansion are presented: the inverse of a general dyadic operator (when it exists), a general rotation operator that includes strains and reflections, the determinant of a general dyadic operator, and operators, including some new ones, used in constructing Lorentz boosts. Finally, a coordinate-free representation of the Levi-Civita tensor is provided. (shrink)

Although the proportion of women in leadership positions has grown over the past decades, women are still underrepresented in leadership roles, which poses an ethical challenge to society at large but business in particular. Accordingly, a growing body of research has attempted to unravel the reasons for this inequality. Besides theoretical progress, a central goal of these studies is to inform measures targeted at increasing the share of women in leadership positions. Striving to contribute to these efforts and drawing on (...) several theoretical approaches, the present study provides a contemporary examination of whether women and men differ in their levels of power motivation and whether potential gender differences in this motivation contribute to the unequal distribution of women and men in leadership positions. Results from four studies provide converging support for these assumptions. Specifically, we found that women consistently reported lower power motivation than men. This in turn mediated the link between gender and leadership role occupancy. These results were robust to several methodological variations including samples from different populations, diverse operationalizations of power motivation and leadership role occupancy, and study design. Implications for theory and practice, including ways to contribute to a more equal gender distribution in leadership positions, are discussed. (shrink)

A. Kenny, Frege, an introduction to the founder of modern analytic philosophy. London:Penguin, 1995. viii-h223pp. £7.99 T. Willamson, Vagueness. London:Routledge, 1994. xiii-f-325 pp. £35.00 TOM BU...

Although counterproductive work behaviors can be extremely damaging to organizations and society as a whole, we do not yet fully understand the link between employees’ organizational attachment and their intention to engage in such behaviors. Based on social identity theory, we predicted a negative relationship between organizational identification and counterproductive work behaviors. We also predicted that this relationship would be moderated by ambivalent identification. We explored counterproductive work behaviors toward the organization and other individuals. Study 1, a survey of 198 (...) employees, revealed that employees who identified strongly with their organization reported lower levels of CWB-O, but as predicted, only when ambivalent identification was low. Study 2 involved a manipulation in the form of a scenario presented to 228 U.S. employees, generally replicated the findings of Study 1: the link between organizational identification and CWB-O was stronger for participants in the low ambivalence condition than for those in the high ambivalence condition. The interaction effect of ambivalent and organizational identification on CWB-I was only marginally significant in the second study. These findings provide new evidence for the positive influence of organizational identification under conditions of low ambivalence on counterproductive behaviors toward an organization. (shrink)

The current research investigates a combination of two instructional approaches, tutored problem solving and worked examples. Tutored problem solving with automated tutors has proven to be an effective instructional method. Worked‐out examples have been shown to be an effective complement to untutored problem solving, but it is largely unknown whether they are an effective complement to tutored problem solving. Further, while computer‐based learning environments offer the possibility of adaptively transitioning from examples to problems while tailoring to an individual learner, the (...) effectiveness of such machine‐adapted example fading is largely unstudied. To address these research questions, one lab and one classroom experiment were conducted. Both studies compared a standard Cognitive Tutor with two example‐enhanced Cognitive Tutors, in which the fading of worked‐out examples occurred either in a fixed way or adaptively. Results indicate that the adaptive fading of worked‐out examples leads to higher transfer performance on delayed posttests than the other two methods. (shrink)

Previous research has shown that female leaders lead slightly more effective than male leaders. However, women are still underrepresented in higher management. In this study, we seek to contribute to a deeper understanding of this paradox by proposing and testing an innovative model that integrates different research streams on gender and leadership. Specifically, we propose power motivation and transformational leadership as two central yet opposing dynamics that underlie the relation between gender and leadership role occupancy. We tested this model in (...) a sample of 256 employees. Results provided support for the proposed relations. These findings contribute to a more detailed and comprehensive understanding for central dynamics that link gender and leadership role occupancy. Moreover, they provide important insights for interventions that are targeted at reducing the gender gap in leadership. We discuss the theoretical and practical implications of these findings. (shrink)

The object of this essay is to discuss two problems and to present solutions to them, which do not quite agree with what is generally said of them. The first problem concerns the history of methods for reaching firm historical knowledge. In three methodological manuals for historians, written by J. G. Droysen, E. Bernheim, and C.-V. Langlois and C. Seignobos and first published in the late nineteenth century, the task of the historian was said to be how to obtain firm (...) knowledge about history. The question is how this message should be understood. The second problem concerns the differences between the three manuals. If their common goal is firm historical knowledge, are there any major differences of opinion? The answer given in this article is yes, and the ground is sought in their theories of truth. (shrink)

Bill Cosby’s immorality has raised intriguing aesthetic and ethical issues. Do the crimes that he has been convicted of lessen the aesthetic value of his stand-up and, even if we can enjoy it, should we? This article first discusses the intimate relationship between the comedian and audience. The art form itself is structurally intimate, and at the same time the comedian claims to express an authentic self on stage. After drawing an analogy between the question of the moral character of (...) comedians and the aesthetic value of their stand-up and the debate over the ethical criticism of art, this article argues that it is reasonable to find a comedian’s performance less funny, because stand-up’s artistic success relies on this intimacy. It contrasts the comedy of Bill Cosby with that of Louis C.K. C.K.’s moral flaws are much more present in his comedy, and it is therefore more difficult to find him funny. Last, it is ethically permissible to enjoy their comedy, if no harm to others results, both because it does not corrupt the audience’s character and because amusement is valuable. (shrink)

In this article, we hypothesize that leaders who display group-oriented values (i.e., values that focus on the welfare of the group rather than on the self-interest of the leader) will be evaluated more positively by their followers than leaders who do not display group-oriented values. Importantly, we expected these effects to be more pronounced for leaders who are ingroup members (i.e., stemming from the same social group as their followers) than for leaders who are outgroup members (i.e., leaders stemming from (...) a different social group than their followers). We tested our hypotheses in two studies. Results of a field study (N = 95) showed the expected relationship between leaders’ group-oriented values and followers’ identification with their leaders. A scenario study (N = 137) replicated the results and extended it to followers’ endorsement of their leaders. Overall, these findings suggest that displaying group-oriented values pays off more for ingroup than for outgroup leaders. (shrink)

In this article, we hypothesize that leaders who display group-oriented values (i.e., values that focus on the welfare of the group rather than on the self-interest of the leader) will be evaluated more positively by their followers than leaders who do not display group-oriented values. Importantly, we expected these effects to be more pronounced for leaders who are ingroup members (i.e., stemming from the same social group as their followers) than for leaders who are outgroup members (i.e., leaders stemming from (...) a different social group than their followers). We tested our hypotheses in two studies. Results of a field study ( N = 95) showed the expected relationship between leaders’ group-oriented values and followers’ identification with their leaders. A scenario study ( N = 137) replicated the results and extended it to followers’ endorsement of their leaders. Overall, these findings suggest that displaying group-oriented values pays off more for ingroup than for outgroup leaders. (shrink)

La phénoménologie radicale de Michel Henry montre que la question de la réceptivité en tant que passivité est au cœur de toute élucidation phénoménologique dans la mesure où nous naissons dans la Vie absolue sans aucune initiative de notre part. Devant une telle situation, la réflexion discursive se montre dépourvue de ses moyens habituels, ce qui entraîne une double stratégie : accuser une telle phénoménologie radicale d'être une totalisation métaphysique ou lui reconnaître seulement une certaine valeur méthodologique, c'est-à-dire opératoire pour (...) la réduction. Notre contribution voudrait établir qu'il s'agit chaque fois, dans des discours similaires, d'une méconnaissance de la « violence » originaire que nous subissons de la part de la vie — violence qui est en même temps notre véritable Bonheur et Demeure. Michel Henry's radical phenomenology shows that receptivity is at the core of any phenomenological elucidation in so far as we are born in Absolute Life without any initiative on our part. Confronted to such a situation, discursive reflection appears to be deprived of its traditional means, which entails a twofold strategy : i.e. on the one hand, accusing such a radical phenomenology of being a metaphysical totalisation or, on the other hand, acknowledging it as a mere methodological value, i.e. an operative one towards reduction. Our contribution would thus try and set that every time, within similar discourses, what is at stake is a misconception of the primary « violence » we suffer from life – a violence which is at the same both our true Happiness and Home. (shrink)

It is pointed out against the two critics (a) that an identity or partial identity of meanings and facts is logically impossible, (b) that the logical grammar of ?identify? and ?explain? is different from that of ?understand? and that hence understanding can never be an operation of identifying or explaining, and (c) that rational understanding does not involve a ?reproduction? of the subject matter in any controversial sense.

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Werke, and: Vol. 1, Schriften zum Spinozastreit (1998), and: Vol. 2, Schriften zum transzendentalen Idealismus (2004), and: Vol. 3, Schriften zum Streit um die göttlichen Dinge und ihre Offenbarung (2000)Rolf AhlersFriedrich Heinrich Jacobi. Werke. Edited by Klaus Hammacher and Walter Jaeschke. Vol. 1, Schriften zum Spinozastreit ( 1998). Vol. 2, Schriften zum transzendentalen Idealismus ( 2004). Vol. 3, Schriften zum Streit um die göttlichen Dinge und ihre (...) Offenbarung ( 2000). Pp. x + 640. Cloth, € 168,00 (Vol. 1). Pp. vii + 823. Cloth, € 264,00 (Vol. 2). Pp. vi + 262. Cloth, € 78,00 (Vol. 3). Hamburg: Felix Meiner Verlag, 1998, 2000, 2004.The new critical Jacobi Werke Ausgabe (JWA), accompanied by four volumes of the still incomplete Briefwechsel (in progress at Frommann-Holzboog Publishers since 1981), is a masterpiece of research on Jacobi, early German Idealism and early Romanticism. Now [End Page 491] available are Volumes I, II and III. Volume I (1998) carries the title Schriften zum Spinozastreit and contains Jacobi's Spinozabriefe in the three editions of 1785, 1789, and 1819, Wider Mendelssohns Beschuldigungen of 1786, and the Vorbericht (Preface) of the third edition of the Spinozabriefe of 1819. The running text of all writings contains all editions, variant readings clearly identifiable with page references in the margins, subscripted to identify the various editions. This method enables the identification of various disputes which Jacobi provoked and in which his writings played a role. The Anhang, appendix, to all texts contains a) a list of abbreviations, and b) the editorial principles used and also a description of the circumstances leading to the writing of the texts. But the bulk of the Anhang of each volume is c) the "Kommentar," the commentary. It provides the key to the highly nuanced and, without guidance, the often cryptic allusions and references of Jacobi's texts. This commentary (separately bound in Volumes I and II) really brings Jacobi's work to life. The end of the Anhang contains d) a bibliography of all works mentioned not only by Jacobi himself but also emerging in the literary debate unlocked by the commentary, as well as e) an extensive index of names. Volume II (2004) is Schriften zur Transzendentalphilosophie, and contains David Hume of 1787, the Sendschreiben an Fichte, Ueberflüssiges Taschenbuch, both of 1799, and other essays such as Three Letters to Köppen of 1803. Volume III (2000) is Schriften zum Streit um die Göttlichen Dinge and contains mainly the famous essay Von den Göttlichen Dingen of 1811 plus three other writings. This book deals with the controversy between Schelling and Jacobi while both were at Munich. Other major works of Jacobi, such as the novel Allwill, are to follow in later volumes.This critical edition of Fr. H. Jacobi (1743–1819) definitively revises the standard interpretation of the man and his work. The standard interpretation (advocated by such figures as Fr. Schlegel, Moses Mendelssohn, and H. Heine) views his thought as promoting irrationalism, specifically a religious irrationalism of faith, taking form in "personalism." Heine spoke of Jacobi as a "whiney old biddy." Fr. Schlegel characterized Jacobi's salto mortale as the "leap into the arms of divine mercy," promoting an irrational "philosophical non-philosophy" (KFSA XVIII 13, Nr. 101). Schlegel criticized Jacobi at the very end of in his Woldemar Review of 1796 thus: "So (Jacobi's) Woldemar is really an invitation to meet God..., and (his) theological masterpiece ends, as do all moral excesses, with a salto mortale... into the abyss of divine mercy" (Früher Idealismus und Frühromantik PlS I.1, ed. W. Jaeschke [Hbg: Meiner, 1995], 270). Carl Philipp Moritz credited Jacobi with "fanaticism and superstition."In contrast, Jacobi himself was quite critical of this characterization of his thought, especially in the Sendschreiben of 1799, and earlier in his Briefe. Jacobi already in 1786 thought it was "outrageous" for Mendelssohn to suggest he surrenders a philosophy of reason in favor of the Christian faith, or worse. He addresses this problem, which is still today the dominant view of the "irrationality" of his "leap," with admirable clarity in his letter to Neeb of May 30, 1817: "I do not at all advocate a head-first... (shrink)

This book examines the presence of idealism in modern philosophy from the seventeenth century to the turn of the twenty-first. We define idealism proper as the position that reality is ultimately mental or conceptual in nature, to be contrasted to materialism or physicalism. So defined, idealism has hardly been a popular view, at least in the twentieth century. But we distinguish between metaphysical and epistemological arguments for idealism, and argue that while the former have rarely been popular, the latter are (...) so, and present in many philosophers who would hardly call themselves idealists. We conclude that metaphysical arguments in favor of a reduction of all reality to either mind or matter are highly questionable, because we have no reason to believe that we have arrived at an adequate understanding of either. However, epistemological arguments in favor of idealism that point to some version of conceptual idealism or other are indeed difficult to avoid. (shrink)

Ayahuasca is a psychoactive beverage that is mostly used in ritualized settings (Santo Daime rituals, neo-shamanic rituals, and even do-it-yourself-rituals). It is a common practice in the investigated socio-cultural field to call these settings “healing rituals.” For this study, 15 people who underwent ayahuasca (self-)therapy for a particular disease like chronic pain, cancer, asthma, depression, alcohol abuse, or Hepatitis C were interviewed twice about their subjective concepts and beliefs on ayahuasca and healing. Qualitative data analysis revealed a variety of motivational (...) patterns, subjective effects, and user types. Most participants were convinced that ayahuasca had influenced their illness positively or improved their coping with their illness. More importantly, it had enhanced their well being in general. As a result, we concluded that the effects of ayahuasca should not be reduced to a pharmacological model. The substance should be conceptualized as a psychological catalyst that unfolds within different fields of sociocultural ideas. (shrink)

Trois sortes de définitions sont présentées et discutées: les définitions nominales, les définitions contextuelles et les définitions amplificatrices. On insiste sur le fait que I’elimination des definitions n’est pas forcement un procede automatique en particulier dans le cas de la logique paraconsistante. Finalement on s’int’resse à la théorie des objets de Meinong et l’on montre comment elle peut êrre considéréecomme une théorie des descripteurs.Three kinds of definitions are presented and discussed: nominal definitions, contextual definitions, amplifying definitions. It is emphasized that (...) the elimination of definitions is not necessarily straightforward in particular in the case of paraconsistent logic. Finally we have a look at Meinong’s theory objects and we show how it can be considered as a theory of descriptors. (shrink)

We first show that a theorem by Cartan that generalizes the Frobenius integrability theorem allows us (given certain conditions) to obtain noncurvature solutions for the differential Bianchi conditions and for higher-degree similar relations. We then prove that there is no algorithmic procedure to determine, for a reasonable restricted algebra of functions on spacetime, whether a given connection form satisfies the preceding conditions. A parallel result gives a version of Gödel's first incompleteness theorem within an (axiomatized) theory of gauge fields.

The first point that Tacitus makes is the confusion that surrounded these elections. Tiberius' policy was in no way as well denned here as it apparently was in the case of the praetorship elections: De comitiis consularibus, quae turn primum illo principe ac deinceps fuere, vix quicquam firmare ausim: adeo diversa non modo apud auctores, sed in ipsius orationibus reperiuntur.

This paper concerns the reformulation by British expatriates and the first generation of English-speaking Indian intellectuals of the key ideas of European constitutional liberalism between 1810 and 1835. The central figure is Rammohan Roy, usually seen as a of Hinduism. Here Rammohan's thought is set in the context of the Iberian and Latin American constitutional revolutions and the movement for free trade and parliamentary reform in Britain. Rammohan and his coevals created a constitutional history for India that centred on the (...) institution of the panchayat, a local judicial body. While some expatriates and Indian radicals discussed or for the country as early as the 1830s, Rammohan himself argued for constitutional limitations on the Company's power and Indian representation in Parliament. Under liberal British government, he believed, an Indian public would emerge, empowered by service on juries and the operations of a free press. (shrink)

The structure of natural languages is usually studied from three major different but interconnected points of view: syntax, semantics, and pragmatics. If we consider that the main purpose of natural languages is communication, we should consider another dimension for languages, which deals with the influence of internal states of communicating individuals on meanings. Such a dimension we refer to as internalism. Within this context, internalism cannot be confused with psycholinguistics, in the same way pragmatics cannot be confused with sociolinguistics. In (...) particular, we argue, language is tied to its systematic use. This view leads us to a non-realist perspective on linguistics. We analyze the role of natural languages into dialogues, by comparing our proposal to the dialogical approach to logic, which considers a dialogue as a game. Within our approach, there is no way to guarantee that two parties involved in a dialogue are playing the same game, due to unavoidable differences in their respective internal states. Another contribution of this paper is to argue that semantics plays a more fundamental role than syntax in the cognitive acquisition of languages. (shrink)

Low‐energy, pulsed electromagnetic fields (PEMFs) have reversed therapeutically resistant pathologic processes in the musculo‐skeletal system. Their development as a non‐thermal therapeutic agent is based on 30 years of study of the electro‐biological properties of connective tissues. Specific energy characteristics in applied PEMFs produce selected biological effects by modifying synthetic and other behavioral patterns of target cells; some mechanisms of action are defined. The technology appears safe and effective in clinical treatment of un‐united fractures, avascular necrosis of bone, and chronic, refractory (...) tendinitis. An expanding, rational use in biomedical science is predicted. (shrink)

This is a collection of essays on themes of legal philosophy which have all been generated or affected by Hart's work. The topics covered include legal theory, responsibility, and enforcement of morals, with contributions from Ronald Dworkin, Rolf Sartorius, Neil MacCormach, David Lyons, Kent Greenawalt, Michael Moore, Joseph Raz, and C.L. Ten, among others.

In this volume C.A. (Chet) Bowers, whose pioneering work on education and environmental and sustainability issues is widely recognized and respected around the world, brings together a carefully curated selection of his seminal work on the ideological, cultural, and linguistic roots of the ecological crisis; misconceptions underlying modern consciousness; the cultural commons; a critique of technology; and educational reforms to address these pressing concerns. In the World Library of Educationalists, international scholars themselves compile career-long collections of what they judge to (...) be their finest pieces - extracts from books, key articles, salient research findings, major theoretical and/practical contributions - so the world can read them in a single manageable volume. Readers will be able to follow the themes and strands of their work and see their contribution to the development of a field, as well as the development of the field itself. Contributors to the series include : Michael Apple, James A. Banks, Joel Spring, William F. Pinar, Stephen J. Ball, Elliot Eisner, Howard Gardner, John Gilbert, Ivor F. Goodson, Peter Jarvis. (shrink)