In this work we analyze the case of resistive conductor plates carrying constant currents, utilizing surface charge distributions. We obtain the electric potential in the plates and in the space surrounding them. We obtain a non-vanishing electric field outside the conductors. We compare the theoretical results with experimental data present in the literature.

We present the opinion of some authors who believe there is no force between a stationary charge and a stationary resistive wire carrying a constant current. We show that this force is different from zero and present its main components: the force due to the charges induced in the wire by the test charge and a force proportional to the current in the resistive wire. We also discuss briefly a component of the force proportional to the square of the current (...) which should exist according to some models and another component due to the acceleration of the conduction electrons in a curved wire carrying a dc current (centripetal acceleration). Finally, we analyze experiments showing the existence of the electric field proportional to the current in resistive wires. (shrink)

We derive the equation describing the flow of a variable current in straight wires and in coaxial cables from Newton's second law of motion plus Weber's electrodynamics. We show that in both cases the signal propagates at light velocity.

The twenty-two essays collected for this book range widely in theme, style, and quality. The essays, a majority of which were previously unpublished, are arranged in three sections: 1) Early Essays, containing one particularly fine essay, "The Soul at Play," originally intended as part of Santayana's Soliloquies in England; 2) Later Essays, in which the title essay and "Friendship" are outstanding; and 3) Philosophical Essays, offering commentaries on Russell, Dewey, and James, on his own philosophy, and "On the False Steps (...) of Philosophy." The book's last article, "What is the Ego?", is an elaboration of his criticism of those "German Prophets" who return from self-contemplation "as greedy as children and as stubborn as Inquisitors." Santayana's manner of exposition often involves the elaboration of a single image or metaphor. When an image or metaphor is employed which can bear the weight of subtle distinctions, he is brilliant; but when the metaphor is too weak to encompass his thinking, then his writing becomes flowery and decadent. The essays, unfinished and fragmentary for the most part, are frequently little more than a single extended metaphor--sometimes over-extended. The fragmentary, possibly only experimental, ideas in these essays invite comparison with their use in his completed works. The book will be of special interest to someone already familiar with Santayana.--A. K. T. (shrink)

We present Helmholtz's argument against Weber's electrodynamics. It is related with a fixed charged nonconducting spherical shell and a charged particle moving inside it. Then we utilize Weber's electrodynamics plus Schrödinger's expression for gravitational interactions in order to obtain the equation of motion and to study this situation. We show that this approach avoids the problems pointed out by Helmholtz. Moreover, it indicates that the effective inertial mass of the charged particle will depend not only on the electrostatic potential of (...) the shell but also on its velocity. This is a relevant aspect of Weber's theory. (shrink)

The editor has arranged forty-nine essays on and by Santayana into eight chapters representing major areas of Santayana's thought such as "Materialism and Idealism," "Essence, Substance, and Existence," "Art and Beauty." The essays supposedly speak to their chapter titles and to each other to create "the sense of dialogue"; with a few exceptions they were not written as deliberate conversation. This "dialogue" treats the reader to a fine display of the variety of minds and interests at work in philosophy and (...) illustrates the fact that one man's philosophical arena is rarely another man's. From J. H. Randall, Jr. to John Crowe Ransom, a recurring point of contention is Santayana's conception of Essences and their relationship to Matter. The range of interpretation on this issue goes from plaintive objections that "Essences don't do anything!" to appreciative acknowledgment that "Essences don't do anything!". Arguments over "isms" abound; realism, idealism, epiphenominalism are examined from many angles besides Santayana's. Santayana is highlighted nicely, arranged in this way beside his critics. His ability to locate the vital force behind an idea and to indicate where specific thrusts of thought will lead evinces his title of philosopher and master critic. This collection is not limited in appeal to Santayana aficionados.--A. K. T. (shrink)

Recent data indicate that under a specific posthypnotic suggestion to circumvent reading, highly suggestible subjects successfully eliminated the Stroop interference effect. The present study examined whether an optical explanation could account for this finding. Using cyclopentolate hydrochloride eye drops to pharmacologically prevent visual accommodation in all subjects, behavioral Stroop data were collected from six highly hypnotizables and six less suggestibles using an optical setup that guaranteed either sharply focused or blurred vision. The highly suggestibles performed the Stroop task when naturally (...) vigilant, under posthypnotic suggestion not to read, and while visually blurred; the less suggestibles ran naturally vigilant, while looking away, and while visually blurred. Although visual accommodation was precluded for all subjects, posthypnotic suggestion effectively eliminated Stroop interference and was comparable to looking away in controls. These data strengthen the view that Stroop interference is neither robust nor inevitable and support the hypothesis that posthypnotic suggestion may exert a top-down influence on neural processing. (shrink)

This monograph attempts to clarify one significant but much neglected aspect of Peirce's contribution to the philosophy of science. It was written in 1963 as my M. A. thesis at the Uni versity of Illinois. Since the topic is still neglected it is hoped that its pUblication will be of use to Peirce scholars. I should like to acknowledge my indebtedness to Dr. Max Fisch who broached this topic to me and who advised me con tinuously through its development, assisting (...) generously with his own insights and unpublished Peirce manuscripts. TABLE OF CONTENTS INTRODUCTION 1. A Current Issue in the Philosophy of Science 1 2. Peirce and His Theory of Abduction 5 3. The General Character of Abduction 7 PART I: THE EARLY THEORY 1. Peirce's Earliest Conception of Inference 11 2. Three Kinds of Inference and Three Figures of Syllogism 13 3. Ampliative Inference and Cognition 17 4. Induction and Hypothesis 20 5. The Method of Methods 23 PART II: THE LATER THEORY 1. The Transitional Period 28 2. Three Stages of Inquiry 31 3. Abduction and Guessing Instinct 35 4. Logic as a Normative Science 38 5. Hypothesis Construction and Selection 41 6. Abduction and Pragmatism 44 7. Economy of Research 47 8. Justification of Abduction 51 CONCLUSION 55 61 BIBLIOGRAPHY INTRODUCTION 1. (shrink)

BACKGROUND: Reasoning biases have been suggested as risk factors for delusional ideation in both patients and non-clinical individuals. Still, it is unclear how these biases are longitudinally related to delusions in the general population. We hence aimed to investigate longitudinal associations between reasoning biases and delusional ideation in the general population. METHODS: We conducted an online cohort study with 1184 adults from the German and Swiss general population. Participants completed measures on reasoning biases (jumping-to-conclusion bias JTC, liberal acceptance bias LA, (...) bias against disconfirmatory evidence BADE, possibility of being mistaken PM) and delusional ideation at baseline, and delusional ideation 7 to 8 months later. RESULTS: A greater JTC bias was associated with a greater increase in delusional ideation over the following months. This association was better described by a positive quadratic relationship. Neither BADE, LA nor PM were associated with subsequent changes in delusional ideation. CONCLUSIONS: This study suggests that jumping-to-conclusions predicts delusional ideation in the general population but that this association may follow a quadratic trajectory. While no other associations turned significant, future studies with shorter temporal distances may shed further light on the role of reasoning biases as risk factors for delusional ideation in non-clinical samples. (shrink)

J. L. Austin (1911-1960) exercised in Post-war Oxford an intellectual authority similar to that of Wittgenstein in Cambridge. Although he completed no books of his own and published only seven papers, Austin became through lectures and talks one of the acknowledged leaders in what is called ‘Oxford philosophy’ or ‘ordinary language philosophy’. Few would dispute that among analytic philosophers Austin stands out as a great and original philosophical genius. Three volumes of his writing, published after his death, have become classics (...) in analytical philosophy: Philosophical Papers ; Sense and Sensibilia ; and How to Do Things with Words . First published in 1969, this book is a collection of critical essays on Austin’s philosophy written by well-known philosophers, many of whom knew Austin personally. A number of essays included were especially written for this volume, but the majority have appeared previously in various journals or books, not all easy to obtain. (shrink)

Meiotic recombination occurs preferentially at certain regions called hot spots and is important for generating genetic diversity and proper segregation of chromosomes during meiosis. Hot spots have been characterized most extensively in yeast, mice and humans. The development of methods based on sperm typing and population genetics has facilitated rapid and high‐resolution mapping of hot spots in mice and humans in recent years. With increasing information becoming available on meiotic recombination in different species, it is now possible to compare several (...) molecular features associated with hot‐spot loci. Further, there have been advances in our knowledge of the factors influencing hot‐spot activity and the role that they play in structuring the genome into haplotype blocks. We review the molecular features associated with hot spots in terms of their properties and mechanisms underlying their function and distribution. A large number of these features seem to be shared among hot spots from different species suggesting common mechanisms for their formation and function. BioEssays 28:45–56, 2006. © 2005 Wiley Periodicals, Inc. (shrink)

Online platforms like Instagram cover potentially distressing imagery with a sensitive-content screen (blurred imagery plus a content warning). Previous research suggests people typically choose to “uncover” and view screened content. In three studies, we investigated whether the presence of screens mitigates the negative emotional impact of viewing content. In Study 1, participants viewed positive and neutral images, and screens (with an option to view the negative images beneath) for a 5-minute period. In Study 2, half the participants saw a grey (...) mask in place of the typical sensitive-content screen. In addition, each image appeared for a fixed period (5 s) and participants had no option to uncover it. Study 3 was like Study 2 except half the participants saw negative images preceded by a sensitive-content screen and half saw negative images without screens. Overall, participants reported a significant increase in state anxiety and negative affect from pre-to post task when they were exposed to sensitive-content screens, whether or not they were also exposed to the negative imagery beneath. Our data suggest sensitive-content screens cause negative responses – state anxiety and negative affect – that do not translate to an emotional benefit when people view negative content. (shrink)

There is a unique relationship between Maoist policies and philosophy. This uniqueness is idue, on the one hand, to the pedagogical orientation of the CPC, and to the essential role of the cultural revolution, on the other.

JL Austin exercised in Post-war Oxford an intellectual authority similar to that of Wittgenstein in Cambridge. Although he completed no books of his own and published only seven papers, Austin became through lectures and talks one of the acknowledged leaders in what is called ‘Oxford philosophy’ or ‘ordinary language philosophy’. Few would dispute that among analytic philosophers Austin stands out as a great and original philosophical genius. Three volumes of his writing, published after his death, have become classics in analytical (...) philosophy: _Philosophical Papers_; _Sense and Sensibilia_; and _How to Do Things with Words_. First published in 1979, this book is a collection of critical essays on Austin’s philosophy written by well-known philosophers, many of whom knew Austin personally. A number of essays included were especially written for this volume, but the majority have appeared previously in various journals or books, not all easy to obtain. (shrink)

J. L. Austin exercised in Post-war Oxford an intellectual authority similar to that of Wittgenstein in Cambridge. Although he completed no books of his own and published only seven papers, Austin became through lectures and talks one of the acknowledged leaders in what is called 'Oxford philosophy' or 'ordinary language philosophy'. Few would dispute that among analytic philosophers Austin stands out as a great and original philosophical genius. Three volumes of his writing, published after his death, have become classics in (...) analytical philosophy: Philosophical Papers; Sense and Sensibilia; and How to Do Things with Words. First published in 1969, this book is a collection of critical essays on Austin's philosophy written by well-known philosophers, many of whom knew Austin personally. A number of essays included were especially written for this volume, but the majority have appeared previously in various journals or books, not all easy to obtain. (shrink)

Ethics review of research involving humans has become something of an institution in recent years. It is intended to protect participants from harm and, to that end, follows rigorous standards. Giv...

While outcomes for children with T-cell acute lymphoblastic leukemia have improved dramatically, survival rates for patients with relapsed/refractory disease remain dismal. Prior studies indicate that glucocorticoid resistance is more common than resistance to other chemotherapies at relapse. In addition, failure to clear peripheral blasts during a prednisone prophase correlates with an elevated risk of relapse in newly diagnosed patients. Here we show that intrinsic GC resistance is present at diagnosis in early thymic precursor T-ALLs as well as in a subset (...) of non-ETP T-ALLs. GC-resistant non-ETP T-ALLs are characterized by strong induction of JAK/STAT signaling in response to interleukin-7 stimulation. Removing IL7 or inhibiting JAK/STAT signaling sensitizes these T-ALLs, and a subset of ETP T-ALLs, to GCs. The combination of the GC dexamethasone and the JAK1/2 inhibitor ruxolitinib altered the balance between pro- and anti-apoptotic factors in samples with IL7-dependent GC resistance, but not in samples with IL7-independent GC resistance. Together, these data suggest that the addition of ruxolitinib or other inhibitors of IL7 receptor/JAK/STAT signaling may enhance the efficacy of GCs in a biologically defined subset of T-ALL.Leukemia advance online publication, 30 May 2017; doi:10.1038/leu.2017.136. (shrink)