Horse and Herald: Posidippus' Equestrian Angelia

Posidippus’ epigrams for equestrian victors (the Hippika, AB 71–88) build on epinician convention by maintaining the central role of the herald’s proclamation— the angelia—in the representation of athletic achievement. In a few of these epigrams, however, Posidippus embeds the horse itself in postvictory rituals. For example, the horse brings the crown to the victor, replacing the figure of the herald who announced and crowned victors; or, in a narrative of the race’s aftermath, the horse, incredibly, chooses the victor. Posidippus’ horses, therefore, act as causal agents for the glory of their owners, and his detailed descriptions transform the horse from flesh-and-blood equine to everlasting (literary) monument. Les épigrammes de Posidippe sur les victoires équestres (les Hippiques, 71-88 A.-B.) s’appuient sur une convention poétique propre aux épinicies qui maintient le rôle de la proclamation du héraut – l’angelia – dans la représentation de la réussite athlétique. Cependant, dans quelques-unes de ces épigrammes, Posidippe intègre le cheval lui-même au rituel marquant la victoire. Par exemple, le cheval apporte la couronne au vainqueur en remplacement de la figure du héraut qui annonce et couronne les vainqueurs ; ou encore, dans le récit de l’après-course, le cheval choisit, de façon surprenante, le vainqueur. Les chevaux de Posidippe interviennent donc en tant qu’agents causaux dans la gloire de leur propriétaire. Ses descriptions détaillées transforment ainsi l’être de chair et de sang qu’est le cheval en un monument (littéraire) éternel.https://www.utpjournals.press/doi/full/10.3138/mous.16.3.00

Absolute photometric calibration of detectors to 0.3 mmag using amplitude-stabilized lasers and a helium-cooled absolute radiometer

Laser sources whose intensity is determined with a cryogenic electrical substitution radiometer are described. Detectors are then calibrated against this known flux, with an overall error of 0.028 percent (0.3 mmag). Ongoing research has produced laser intensity stabilizers with flicker and drift of less than 0.01 percent. Recently, the useful wavelength limit of these stabilizers have been extended to 1.65 microns by using a new modular technology and InGaAs detector systems. Data from Si photodiode calibration using the method of Zalewski and Geist are compared against an absolute cavity radiometer calibration as an internal check on the calibration system

When almost all sets are difference dominated

We investigate the relationship between the sizes of the sum and difference sets attached to a subset of {0,1,...,N}, chosen randomly according to a binomial model with parameter p(N), with N^{-1} = o(p(N)). We show that the random subset is almost surely difference dominated, as N --> oo, for any choice of p(N) tending to zero, thus confirming a conjecture of Martin and O'Bryant. The proofs use recent strong concentration results. Furthermore, we exhibit a threshold phenomenon regarding the ratio of the size of the difference- to the sumset. If p(N) = o(N^{-1/2}) then almost all sums and differences in the random subset are almost surely distinct, and in particular the difference set is almost surely about twice as large as the sumset. If N^{-1/2} = o(p(N)) then both the sum and difference sets almost surely have size (2N+1) - O(p(N)^{-2}), and so the ratio in question is almost surely very close to one. If p(N) = c N^{-1/2} then as c increases from zero to infinity (i.e., as the threshold is crossed), the same ratio almost surely decreases continuously from two to one according to an explicitly given function of c. We also extend our results to the comparison of the generalized difference sets attached to an arbitrary pair of binary linear forms. For certain pairs of forms f and g, we show that there in fact exists a sharp threshold at c_{f,g} N^{-1/2}, for some computable constant c_{f,g}, such that one form almost surely dominates below the threshold, and the other almost surely above it. The heart of our approach involves using different tools to obtain strong concentration of the sizes of the sum and difference sets about their mean values, for various ranges of the parameter p.Comment: Version 2.1. 24 pages. Fixed a few typos, updated reference

Fine Tuning in Supersymmetric Models

The solution of a fine tuning problem is one of the principal motivations of Supersymmetry. However experimental constraints indicate that many Supersymmetric models are also fine tuned (although to a much lesser extent). We review the traditional measure of this fine tuning used in the literature and propose an alternative. We apply this to the MSSM and show the implications.Comment: Included in proceedings of The 14th International Conference on Supersymmetry and the Unification of Fundamental Interaction

Measuring Fine Tuning In Supersymmetry

The solution to fine tuning is one of the principal motivations for supersymmetry. However constraints on the parameter space of the Minimal Supersymmetric Standard Model (MSSM) suggest it may also require fine tuning (although to a much lesser extent). To compare this tuning with different extensions of the Standard Model (including other supersymmetric models) it is essential that we have a reliable, quantitative measure of tuning. We review the measures of tuning used in the literature and propose an alternative measure. We apply this measure to several toy models and the MSSM with some intriguing results.Comment: Submitted for the SUSY07 proceeding

A Sympotic Self: Instruction through Inebriation in Anacreon

As early as the fifth century, Anacreon was the poet of wine, love, and song; even his death—choking on a pip—is attributed to the grape. The fact that the symposion looms large in the extant fragments is, therefore, hardly surprising. In this article, I examine Anacreon’s sympotic verse and its moral quality. While the ethical character of Xenophanes’ and Theognis’ sympotic fragments has been acknowledged, most scholars consider Anacreon as a poet of love, rather than of moral instruction. Recently, Lear and Hobden have begun to address the moral and instructive character of Anacreon’s verse. I build on these analyses by examining the Anacreontic speaker’s presentation of moral value through his own person; there are 46 first-person statements in Anacreon, an important fact considering the narrative and psychological potency of “I” statements in early Greek lyric. In contrast to gnomic statements that purport to be generalized prescriptions, Anacreon’s performative “I” offers an alternative mode of moralizing delivery. These first persons, however, are not the same person: Anacreon gives a multitude of perspectives on appropriate sympotic behaviour. I read the Anacreontic speaker’s diverse and changing persona as a challenging and embodied moral perspective, which destabilizes the idea of a true self, and consequently denies the stereotyping of ancient poetic biography. By enunciating Anacreon’s songs, the speaker puts his own body and individuality into play in the “educative” space of the symposion. In Anacreon’s verse, the self itself becomes the space on which sympotic instructions—moral imperatives—are inscribed and displayed to others.https://utpjournals.press/doi/10.3138/mous.15.1.

Enhancement of primary production in the North Atlantic outside of the spring bloom, identified by remote sensing of ocean colour and temperature

Peer reviewedPublisher PD