David Albert claims that classical electromagnetic theory is not time reversal invariant. He acknowledges that all physics books say that it is, but claims they are ``simply wrong" because they rely on an incorrect account of how the time reversal operator acts on magnetic fields. On that account, electric fields are left intact by the operator, but magnetic fields are inverted. Albert sees no reason for the asymmetric treatment, and insists that neither field should be inverted. I argue, (...) to the contrary, that the inversion of magnetic fields makes good sense and is, in fact, forced by elementary geometric considerations. I also suggest a way of thinking about the time reversal invariance of classical electromagnetic theory -- one that makes use of the invariant (four-dimensional) formulation of the theory -- that makes no reference to magnetic fields at all. It is my hope that it will be of interest in its own right, Albert aside. It has the advantage that it allows for arbitrary curvature in the background spacetime structure, and is therefore suitable for the framework of general relativity. (The only assumption one needs is temporal orientability.). (shrink)

There are many similarities between the Christian concept of the Seven Deadly Sins, the Stoic concept of internal events, the Hebrew concept of 'awon (sin, punishment), and the existential concept of bad faith. All of these evidence a concern for an internalization of sin or bad faith, which is more common in Eastern than Western religions. These four views are contrasted with the English concept synne which represents the Western extemalization of sin or bad faith. This existential interpretation includes an (...) exploration of 'awon in the Cain and Abel story as well as several reflections concerning the difference between bad faith and good faith. (shrink)

Stronach and Allan state that the use of humor by the disabled is an attempt to reintegrate themselves back into a social surround. Seeing this assignment of a reintegration function as a bit too teleological, and given the absence of interactional data, the reviewer is critical of the authors' reliance on literary research and offers an alternative way to study humor in interaction.

Cadherin‐mediated cell‐cell adhesion is perturbed in protein tyrosine kinase (PTK)‐transformed cells. While cadherins themselves appear to be poor PTK substrates, their cytoplasmic binding partners, the Arm catenins, are excellent PTK substrates and therefore good candidates for mediating PTK‐induced changes in cadherin behavior. These proteins, p120ctn, β‐catenin and plakoglobin, bind to the cytoplasmic region of classical cadherins and function to modulate adhesion and/or bridge cadherins to the actin cytoskeleton. In addition, as demonstrated recently for β‐catenin, these proteins also have crucial signaling (...) roles that may or may not be related to their effects on cell‐cell adhesion. Tyrosine phosphorylation of cadherin complexes is well documented and widely believed to modulate cell adhesiveness. The data to date, however, is largely correlative and the mechanism of action remains unresolved. In this review, we discuss the current literature and suggest models whereby tyrosine phosphorylation of Arm catenins contribute to regulation or perturbation of cadherin function. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:A Response to Charles AltieriRobert B. PippinIam very grateful to Charles Altieri for his attentive reading of and thoughtful critique of Philosophy by Other Means: The Arts in Philosophy and Philosophy in the Arts.1 Let me proceed immediately to his main and quite important criticism of the approach defended there. It is this: "My one huge problem with Pippin's perspective is that I cannot accept his insistence that the (...) distinctive form of thinking elicited by works of art is best treated as a mode of knowledge." And he offers a contrasting perspective: "Instead I propose that art should matter to society primarily as the achievement of constructed, specific, individual experiences that embody resonance and authority. Then we can claim that their capacities to engage audiences in particular imaginative situations dramatically stage responses to the historical conditions on which Pippin dwells." This is a densely stated alternative, and I am not sure I fully understand it or why stating it this way thereby shows why art "should matter to society" (art may do this, but why is that important?), but I have much to say by way of clarification before getting to the alternative.First, I meant the title to be as dialectical and so as paradoxical as it sounds. If the means are "other," then we have left philosophy altogether; if the other means are still philosophical, then they can't count as "other." By dialectical I mean simply the avoidance of such dualisms, while not collapsing distinctions through some sort of resolutive reductionism. The idea is to avoid two terrible examples of philosophical approaches to the arts that putatively avoid such dualisms: either provocative or illustrative. The former sees literature especially as embodying issues like moral dilemmas that can be understood to pose, to provoke, philosophical [End Page 249] questions that traditional philosophy should then take up and discuss on its own. (Examples are the way Samuel Beckett's plays, or Albert Camus's The Stranger, are sometimes taught.) The latter, the illustrative, sees literature, again paradigmatically, as providing something like the flesh and blood of abstract philosophical issues, instantiating and illustrating a particular philosophical approach, like moral sentimentalism. (Charles Dickens is often cited.)These are surely examples of what Altieri cites as, and quite rightly rejects, as "appropriating those [aesthetic] experiences for philosophical explanation." I want to reject such "appropriationism" too. In my first chapter, on philosophical criticism of the arts, the idea I defended was that attention to the philosophical value of literature (I will stay with this art form for a while) is attention to literature as a form of reflective thinking itself, in no need of appropriation by philosophy—even though, I claim, there can be a form of philosophical criticism. The point of such criticism is to illuminate that dimension of the work itself, something philosophically significant that the work can do but traditional philosophy cannot.This is couched within several qualifications. Such attentiveness can be valuable, but not for just any work of great literature. Some literature is great without being concerned with any aesthetic modality of "thinking." One can surely admire Samuel Richardson or Anthony Trollope or William Makepeace Thackeray and admit that their value stems from other qualities in the prose, plotting, and psychologically astute portrayal of characters. And for many other reasons, any of the arts can be said to be valuable even if a case can also be made for their bearing on philosophy.And finally, the concept of "philosophical knowledge" is quite complicated. Surely some philosophers, like G. W. F. Hegel, believe in such a thing, but I don't. As Altieri rightly points out, no Absolute exists. What interests me is the relevance of Hegel's claim that a sensible and affective modality of collective self-knowledge can be embodied in many great works. But the collective self-knowledge embodied in fiction is not like discursive or analytic or even speculative knowledge. I see no strict distinction between the object of interrogation and the interrogation itself. That is, the "self" in question (e.g., who have we become?) is what it is by virtue of its own self-interpretation. Self-knowledge in... (shrink)

This study examined whether scaffolded lesson study might contribute to the emergence of a shared professional teaching knowledge culture among 4th grade social studies teachers. The study reports findings from a three-year lesson study professional development project that sought to develop professional teaching knowledge for problem-based historical inquiry among participating teachers. Participants included six 4th grade State History teachers from three different schools and three different school systems. Using qualitative data collected during three yearlong lesson study cycles, we present evidence (...) that suggests that lesson study can be used to develop a shared professional teaching knowledge culture among 4th grade social studies teachers. We suggest, however, that a combination of factors might contribute to variations in teachers' participation in that shared professional teaching knowledge culture including the degree to which the teachers embraced the public nature of lesson study. These factors include the teachers' idiosyncratic views of teaching and learning, the teachers' individual tolerance for socially constructing curricula, and the degree to which teachers acceded to cultural obstacles within elementary schooling. (shrink)

Entrepreneurs generally lack the marketing capabilities necessary to bring their new product to market. To engage the resources required to do this, they must somehow place a value on the enterprise. However, all of the methods of valuation currently available are based on the use of historical or current revenues, and therefore are not applicable to an entrepreneurial enterprise with a first-time product. In Valuing an Entrepreneurial Enterprise, Audretsch and Link present a valuation method uniquely tailored to emerging technology-based ventures (...) that have no revenue history to lean on. Unlike many traditional methods, theirs does not take into account the track record of companies and products similar to that being valuated. Instead, it draws on economic theory to formulate a solution to the problem. The book develops conceptual ground, including trends in entrepreneurship, models of innovation, and the economics of standards and entrepreneurship policy. The authors review the traditional valuation methods and illustrate them numerically with case studies to show how the traditional approach produces an incorrect valuation. The core of the book presents the new methodology and demonstrates how it avoids the pitfalls of past approaches. The authors also show how public policy on technology and infrastructure changes valuations of start-up firms in areas such as stem-cell products and renewable fuels projects. Valuing an Entrepreneurial Enterprise will serve as a valuable resource for advanced students, economists, financial planners, and valuators interested in new valuation methods and the theory behind them, as well as those interested in entrepreneurship. (shrink)

The earlier volume in this series dealt with two religions of Indian origin, namely, Buddhism and Jainism. The Indian religious scene, however, is characterized by not only religions which originated in India but also by religions which entered India from outside India and made their home here. Thus religious life in India has been enlivened throughout its history by the presence of religions of foreign origin on its soil almost from the very time they came into existence. This volume covers (...) three such religions—Zoraoastrianism, Judaism, and Islam. In the case of Zoraostianism, even its very beginnings are intertwined with India, as Zoroastrianism reformed a preexisting religion which had strong links to the Vedic heritage of India. This relationship took on a new dimension when a Zoroastrian community, fearing persecution in Persia after its Arab conquest, sought shelter in western India and ultimately went on to produce India’s pioneering nationalist in the figure of Dadabhai Naoroji ( 1825-1917), also known as the Grand Old Man of India. Jews found refuge in south India after the destruction of the Temple by the Romans in 70 C.E. and have remained a part of the Indian religious scene since then, some even returning to Israel after it was founded in 1948. Islam arrived in Kerala as soon as it was founded and one of the earliest mosques in the history of Islam is found in India. Islam differs from the previously mentioned religions inasmuch as it went on to gain political hegemony over parts of the country for considerable periods of time, which meant that its impact on the religious life of the subcontinent has been greater compared to the other religions. It has also meant that Islam has existed in a religiously plural environment in India for a longer period than elsewhere in the world so that not only has Islam left a mark on India, India has also left its mark on it. Indeed all the three religions covered in this volume share this dual feature, that they have profoundly influenced Indian religious life and have also in turn been profoundly influenced by their presence in India. (shrink)

The earlier volume in this series dealt with two religions of Indian origin, namely, Buddhism and Jainism. The Indian religious scene, however, is characterized by not only religions which originated in India but also by religions which entered India from outside India and made their home here. Thus religious life in India has been enlivened throughout its history by the presence of religions of foreign origin on its soil almost from the very time they came into existence. This volume covers (...) three such religions—Zoraoastrianism, Judaism, and Islam. In the case of Zoraostianism, even its very beginnings are intertwined with India, as Zoroastrianism reformed a preexisting religion which had strong links to the Vedic heritage of India. This relationship took on a new dimension when a Zoroastrian community, fearing persecution in Persia after its Arab conquest, sought shelter in western India and ultimately went on to produce India’s pioneering nationalist in the figure of Dadabhai Naoroji ( 1825-1917), also known as the Grand Old Man of India. Jews found refuge in south India after the destruction of the Temple by the Romans in 70 C.E. and have remained a part of the Indian religious scene since then, some even returning to Israel after it was founded in 1948. Islam arrived in Kerala as soon as it was founded and one of the earliest mosques in the history of Islam is found in India. Islam differs from the previously mentioned religions inasmuch as it went on to gain political hegemony over parts of the country for considerable periods of time, which meant that its impact on the religious life of the subcontinent has been greater compared to the other religions. It has also meant that Islam has existed in a religiously plural environment in India for a longer period than elsewhere in the world so that not only has Islam left a mark on India, India has also left its mark on it. Indeed all the three religions covered in this volume share this dual feature, that they have profoundly influenced Indian religious life and have also in turn been profoundly influenced by their presence in India. (shrink)

Book reviewed in this article: Life Choices: Confronting the Life and Death Decisions Created by Modern Medicine. By Howard Levine. Hard Choices: Mixed Blessings of Modern Medical Technology. By B. D. Colen. The Sorcerer's Apprentice: Inside the Modem Hospital. By Sallie Tisdale. Playing God in the Nursery. By Jeff Lyon.

Argumentation as the public exchange of reasons is widely thought to enhance deliberative interactions that generate and justify reasonable public policies. Adopting an argumentation-theoretic perspective, we survey the norms that should govern public argumentation and address some of the complexities that scholarly treatments have identified. Our focus is on norms associated with the ideals of correctness and participation as sources of a politically legitimate deliberative outcome. In principle, both ideals are mutually coherent. If the information needed for a correct deliberative (...) outcome is distributed among agents, then maximising participation increases information diversity. But both ideals can also be in tension. If participants lack competence or are prone to biases, a correct deliberative outcome requires limiting participation. The central question for public argumentation, therefore, is how to strike a balance between both ideals. Rather than advocating a preferred normative framework, our main purpose is to illustrate the complexity of this theme. (shrink)