A perfectly matched layer (PML) absorbing material composed of a uniaxial anisotropic material is presented for the truncation of finite-difference time-domain (FDTD) lattices. It is shown that the uniaxial PML material formulation is mathematically equivalent to the perfectly matched layer method published by Berenger (see J. Computat. Phys., Oct. 1994). However, unlike Berenger's technique, the uniaxial PML absorbing medium presented in this paper is based on a Maxwellian formulation. Numerical examples demonstrate that the FDTD implementation of the uniaxial PML medium (...) is stable, equal in effectiveness as compared to Berenger's PML medium, while being more computationally efficient. (shrink)

Semiotic objections to commodification hold that buying and selling certain goods and services is wrong because of what market exchange communicates or because it violates the meaning of certain goods, services, and relationships. We argue that such objections fail. The meaning of markets and of money is a contingent, socially constructed fact. Cultures often impute meaning to markets in harmful, socially destructive, or costly ways. Rather than semiotic objections giving us reason to judge certain markets as immoral, the usefulness of (...) certain markets gives us reason to judge certain semiotic codes as immoral. (shrink)

Although some still advance reductive accounts of emotions—according to which they fall under a more familiar type of mental state—contemporary philosophers tend to agree that emotions probably constitute their own kind of mental state. Agreeing with this claim, however, is compatible with attempting to find commonalities between emotions and better understood things. According to the advocates of the so-called ‘perceptual analogy’, thinking of emotion in terms of perception can fruitfully advance our understanding even though emotion may not be reducible to (...) ordinary perception. In this paper, I spell out and motivate a different analogy—that between emotion and action—an analogy which I think can do some important theoretical work. In particular, it constitutes a theoretically fruitful way to think about core aspects of emotions and might in fact be employed to provide a better account of certain aspects of emotions than the one based on the perceptual analogy. Emotions might not be a matter of seeing the world a certain way, but a matter of behaving internally in response to it. In a slogan form: Emotion is the inward counterpart of bodily movement. (shrink)

I argue that emotions are belief/desire sets characterized by strong desire.

It is a popular thought that emotions play an important epistemic role. Thus, a considerable number of philosophers find it compelling to suppose that emotions apprehend the value of objects and events in our surroundings. I refer to this view as the Epistemic View of emotion. In this paper, my concern is with a rivaling picture of emotion, which has so far received much less attention. On this account, emotions do not constitute a form of epistemic access to specific axiological (...) aspects of their objects. Instead it proposes that they are ways of taking a stand or position on the world. I refer to this as the Position-Taking View of emotion. Whilst some authors seem sympathetic to this view, this it has so far not been systematically motivated and elaborated. In this paper, I fill this gap and propose a more adequate account of our emotional engagement with the world than the predominant epistemic paradigm. I start by highlighting the specific way in which emotions are directed at something, which I contrast with the intentionality of perception and other forms of apprehension. I then go on to offer a specific account of the valence of emotion and show how this account and the directedness of emotions makes them intelligible as a way of taking a position on something. (shrink)

Retribution is often dismissed as augmenting the initial harm done, rather than ameliorating it. This criticism rests on a crude view of retribution. In our actual practice in informal situations and in the workings of the reactive (properly called 'retributive') sentiments, retribution is true to the gravity of wrongdoing, but does aim to ameliorate it. Through wrongdoing, offenders become alienated from the moral community: their actions place their commitment to its core values in doubt. We recognize this status in blaming, (...) a withdrawal of civility and solidarity which symbolizes the moral distance wrongdoers have put between them and us. Atonement is the means by which they make themselves 'at one' again with the community. Retribution is properly understood as a cycle which recognizes disruption and alienation, but aims at reconciliation. (shrink)

In this paper, I argue that our practice of giving and demanding apologies is rationalized by a belief that apologies make a difference to our normative situation. The characteristic normative effects of an apology are, I claim, that it removes an obligation on others to distance themselves from the wrongdoer, and that it makes the apologizer personally accountable to the addressee for their future compliance with the obligation they violated. However, if we ask what rationalizes that belief, two influential views (...) on the literature on apology – that I call the Reassurance View and the Performing Deference View – prove to be inadequate. In particular, these views cannot explain how apology can be both an expression of remorse for one’s wrongdoing but also a performative through which, by carrying out certain canonical actions, one can – all at once – change one’s normative situation. In order to explain these features of apology, I suggest that we see apology as akin to a normative power, but a normative power that is exercised expressively, or by an expressive action. In particular, I suggest that we see the power of apology as exercised by the performance of the expressive action of dissociation. (shrink)

Rational explanation of action out of emotion faces a number of challenges. The Wrong Explanation Challenge says that explaining action out of emotion by reference to a purpose rather than an emotion gets it wrong. The Redundancy Challenge says that if explanation of an action by reference to emotion is sufficient then rational explanation is redundant. And the No Further Justification Challenge says that there is no more to say, at the level of rational explanation, about why people act as (...) they do out of a particular emotion. Furthermore, even if these challenges can be addressed, there is a Problem of Expressive Action, since many actions out of emotion seem unpromising candidates for being guided by normative practical reasons of the prudential, instrumental, deontic or consequentialist sort. In response, I argue that many actions out of emotions should be understood as expressive actions guided by the agent's conception of normative practical reasons: specifically, their conception of expressive reasons. (shrink)

In this article, I look at the role of appeals to the emotions in criminal law defences. A position commonly held is that appeals to the emotions can excuse but cannot justify. However, we should be careful that this view does not rest on too simple and non-cognitive a view of the emotions. I contrast a simple picture, according to which action from emotion involves loss of rational control, with the more Aristotelian picture recently offered by RA Duff. I then (...) look at John Gardner’s theory of excuses, which seeks to avoid the non-cognitive account of action from emotion as loss of rational control, but nevertheless denies that reference to the emotions can even partially justify. I argue that what is at issue between Gardner and Duff is what Gardner calls the ‘no-difference’ thesis, namely that the reasons that count in favour of an emotion count also in favour of action done from that emotion. I conclude that Gardner has not yet explained why we should reject the no-difference thesis. (shrink)

Recent writing on the expression of emotion has explored the idea that there is a symbolic dimension to many “expressive actions.” This paper aims to situate and better understand the “symbolic expression” account by exploring its position in a framework of views from the history of philosophy regarding emotion, action out of emotion, and their place in the good human life. The paper discusses a number of competing views that can be found in this tradition, ranging from irrationalism, through irenicism, (...) self‐externalization, and cognitivism to the symbolist tradition itself. In looking specifically at the roots of symbolism, the paper departs from the common view that Aristotelianism is the central tradition, for us, of thinking about philosophy of the emotions. It suggests that we can get a better grip on the source of these ideas by looking rather at how thinkers in the post‐Kantian and Romantic tradition wrestled with the question of the freedom and rationality of behaviour out of emotion. (shrink)