GATT AND THE ENVIRONMENT: POLICY RESEARCH NEEDS

This paper is a brief review of current problems in which trade and environmental issues intersect. After a statement of these problems, it focuses on some recent empirical research and future research needs of special relevance to agricultural economists.Environmental Economics and Policy, International Relations/Trade,

Dispositions of Property to Unincorporated Non-Profit Associations

It now becomes necessary to examine the cases in which the disposition could not be treated as one to the existing members. This treatment will disclose that some courts have been prepared to regard some dispositions to associations as being for the purposes of the association. The only way in which property may be devoted to a purpose without conferring beneficial interests on particular individuals is by a trust. Accordingly in many instances the disposition takes effect as a trust

Generalized Euler constants

We define a family {$\gamma(P)$} of generalized Euler constants indexed by finite sets of primes $P$ and study their distribution. These arise from partial sums of reciprocals of integers not divisible by any prime in $P$. An apparent monotonicity is investigated. We also prove that a certain property of these numbers is equivalent to the Riemann Hypothesis.Comment: v2. 13 pages. Minor changes suggested by the referee. To appear in Math. Proc. Cambridge Phil. So

Evaluating the Success of Urban Success Stories

Arresting and reversing the condition of urban distress in America\u27s cities represents one of the most challenging and perplexing problems confronting policy-makers. Indeed, urban distress in American cities has proved to be a stubborn and largely intractable phenomenon during the past two decades. Nevertheless, a number of cities that were experiencing distress at the beginning of the 1980s are now being acclaimed as \u27urban success stories\u27 or \u27revitalised\u27 cities. We evaluate the performance, between 1980 and 1990, of these supposedly \u27revitalised\u27 cities on objective indicators of the economic well-being of their residents and compare their performance to that other cities that were equally distressed in 1980. We conclude that with the exception of Atlanta, Baltimore and Boston, the purportedly \u27revitalised\u27 cities performed no better with respect to change in the economic well-being of their residents than did other cities that were equally distressed in 1980—and in many cases performed worse

Decoherence produces coherent states: an explicit proof for harmonic chains

We study the behavior of infinite systems of coupled harmonic oscillators as t->infinity, and generalize the Central Limit Theorem (CLT) to show that their reduced Wigner distributions become Gaussian under quite general conditions. This shows that generalized coherent states tend to be produced naturally. A sufficient condition for this to happen is shown to be that the spectral function is analytic and nonlinear. For a rectangular lattice of coupled oscillators, the nonlinearity requirement means that waves must be dispersive, so that localized wave-packets become suppressed. Virtually all harmonic heat-bath models in the literature satisfy this constraint, and we have good reason to believe that coherent states and their generalizations are not merely a useful analytical tool, but that nature is indeed full of them. Standard proofs of the CLT rely heavily on the fact that probability densities are non-negative. Although the CLT generally fails if the probability densities are allowed to take negative values, we show that a CLT does indeed hold for a special class of such functions. We find that, intriguingly, nature has arranged things so that all Wigner functions belong to this class.Comment: Final published version. 17 pages, Plain TeX, no figures. Online at http://astro.berkeley.edu/~max/gaussians.html (faster from the US), from http://www.mpa-garching.mpg.de/~max/gaussians.html (faster from Europe) or from [email protected]

Validation of the Exoplanet Kepler-21b using PAVO/CHARA Long-Baseline Interferometry

We present long-baseline interferometry of the Kepler exoplanet host star HD179070 (Kepler-21) using the PAVO beam combiner at the CHARA Array. The visibility data are consistent with a single star and exclude stellar companions at separations ~1-1000 mas (~ 0.1-113 AU) and contrasts < 3.5 magnitudes. This result supports the validation of the 1.6 R_{earth} exoplanet Kepler-21b by Howell et al. (2012) and complements the constraints set by adaptive optics imaging, speckle interferometry, and radial velocity observations to rule out false-positives due to stellar companions. We conclude that long-baseline interferometry has strong potential to validate transiting extrasolar planets, particularly for future projects aimed at brighter stars and for host stars where radial velocity follow-up is not available.Comment: 5 pages, 3 figures, accepted for publication in MNRAS Letters; v2: minor changes added in proo

Modelling the dynamics of support for a right-wing populist party: the case of UKIP

ABSTRACT: Similar to a number of other right-wing populist parties in Europe, Great Britain's United Kingdom Independence Party (UKIP) has experienced increased public support in recent years. Using aggregate data from monthly national surveys conducted between April 2004 and April 2014, time series analyses demonstrate that the dynamics of UKIP support were influenced by a combination of spatial and valence issues. A spatial issue, Euroscepticism, was fundamental, with UKIP support moving in dynamic equilibrium with changing public attitudes towards EU membership. In addition, widespread anti-immigration sentiment and dissatisfaction with the performance of the Conservative–Liberal Democrat coalition government combined with the “oxygen of publicity” to propel UKIP's surge. The political context after the 2010 general election helped as well by enabling UKIP to benefit from valence considerations. Many voters continued to doubt the competence of the major opposition party, Labour, while the Liberal Democrats were part of the government and, hence, unavailable as a protest vehicle. Since many of the forces driving UKIP support are beyond its control, the party's prospects are highly uncertain