Composite fields, generalized hypergeometric functions and the U(1)YU(1)_Y symmetry in the AdS/CFT correspondence

We discuss the concept of composite fields in flat CFT as well as in the context of AdS/CFT. Furthermore we show how to represent Green functions using generalized hypergeometric functions and apply these techniques to four-point functions. Finally we prove an identity of $U(1)_Y$ symmetry for four-point functions.Comment: 12 pages, 2 figure

Slow Food: From Farm to Healthy Body

Slow Food is a movement devoted to the preservation and promotion of personal, environmental and community health through lifestyle changes which focus on good, clean and fair food. Good refers to food that is healthy and nutritious for the body. Food grown sustainably as in organic agriculture contains higher levels of beneficial compounds such as vitamins, minerals and phytochemicals. Clean food contains no toxic or harmful compounds that can cause detrimental effects on health. Pesticides and other chemicals are often used in food production; as a result they are found in the final product and are often detected in the surrounding environment. Organically produced food includes many practices that allow it to fit into the Slow Food model. Included in these are, the increased presence of phytochemicals, vitamins and other nutrients as well as decreased concentrations of pesticide residues. Additionally, cover cropping and use of manures improves soil quality for future crops. Fair includes food that economically benefits the producer and the community. Local food systems, cohesively fit into the Slow Food model and help improve the society, economy, and environment of the community. Thus Slow Food is a sustainable model, which if implemented in a community would greatly benefit the health of the citizens, environment and economy

An approach to morale manipulation

Thesis (M.B.A.)--Boston Universit

Millimetric Astronomy from the High Antarctic Plateau: site testing at Dome C

Preliminary site testing at Dome C (Antarctica) is presented, using both Automatic Weather Station (AWS) meteorological data (1986-1993) and Precipitable Water Vapor (PWV) measurements made by the authors. A comparison with South Pole and other sites is made. The South Pole is a well established astrophysical observing site, where extremely good conditions are reported for a large fraction of time during the year. Dome C, where Italy and France are building a new scientific station, is a potential observing site in the millimetric and sub-millimetric range. AWS are operating at both sites and they have been continuously monitoring temperature, pressure, wind speed and direction for more than ten years. Site testing instruments are already operating at the South Pole (AASTO, Automated Astrophysical Site-Testing Observatory), while ''light'' experiments have been running at Dome C (APACHE, Antarctic Plateau Anisotropy CHasing Experiment) during summertime. A direct comparison between the two sites is planned in the near future, using the AASTO. The present analysis shows that the average wind speed is lower at Dome C (~1 m/s) than at the South Pole (~2 m/s), while temperature and PWV are comparable.Comment: 10 pages, 8 figures, se also http://www.atnf.csiro.au/pasa/16_2

An Empirical Assessment of Climate Change in the Courts: A New Jurisprudence or Business as Usual?

While legal scholarship seeking to assess the impact of litigation on the direction of climate change policy is abundant and growing in leaps and bounds, to date it has relied on and examined only small, isolated pieces of the vast litigation landscape. Without a complete picture of what has and has not been within the sweep of climate change litigation, it is difficult to offer a robust evaluation of the past, present, and future of climate change jurisprudence. Based on a comprehensive empirical study of the status of all (201) climate change litigation matters filed through 2010, this Article is the first to fill those gaps and assess the state of play of climate change in the courts. It concludes that the story of climate change in the courts has not been one of courts forging a new jurisprudence, but rather one of judicial business as usual. Part I of the Article outlines the scope of climate change litigation, explaining what qualifies as climate change litigation in our study, our methodology for identifying and coding case attributes, and our typology of the claims that have been or likely will be made as climate change moves relentlessly forward. Part I then presents and assesses the major theme revealed from our empirical study and largely missing from commentary on climate change litigation-that a siege-like battle between pro and anti regulation interests has led to an increasingly robust and complex litigation landscape but with mixed results for both sides. Drawing from those findings, Part III takes on a set of empirical and normative questions designed to summarize and assess the climate change litigation experience and its impacts on the content and institutions of climate policy. It is evident at all levels of inquiry that courts have taken a business as usual approach to climate change, resisting litigants\u27 attempts to make courts a locus of direct policy-making, but courts nevertheless have influenced the policy content and its institutional contours dramatically. We extract these themes from the full experience of climate change litigation and suggest fruitful paths of research to develop a better understanding of the role and impact of the courts in the climate change policy arena. Part IV then stretches a bit from the confines of our empirical study and findings to speculate about the future of climate change litigation

Absorption of Ultrashort Laser Pulses in Strongly Overdense Targets

We report on the first absorption experiments of sub-10 fs high-contrast Ti:Sa laser pulses incident on solid targets. The very good contrast of the laser pulse assures the formation of a very small pre-plasma and the pulse interacts with the matter close to solid density. Experimental results indicate that p-polarized laser pulses are absorbed up to 80 percent at 80 degrees incidence angle. The simulation results of PSC PIC code clearly confirm the observations and show that the collisionless absorption works efficiently in steep density profiles

Adaptive Management in the Courts

Adaptive management has become the tonic of natural resources policy. With its core idea of “learning while doing,” adaptive management has infused the natural resources policy world to the point of ubiquity, surfacing in everything from mundane agency permits to grand presidential proclamations. Indeed, it is no exaggeration to suggest that these days adaptive management is natural resources policy. But is it working? Does appending “adaptive” in front of “management” somehow make natural resources policy, which has always been about balancing competing claims to nature’s bounty, something more and better? Many legal and policy scholars have asked that question, with mixed reviews. Their evaluations, however, have rested on theory, program-specific surveys, and isolated case studies. This article provides the first comprehensive review of adaptive management from the perspective that likely matters most to the natural resource agencies practicing adaptive management - how is it faring in the courts? Part I of the Article examines the theory, policy, and practice of adaptive management, focusing on the experience of the federal resource management agencies. The end product in practice is something we call “a m-lite,” a watered down version of the theory that resembles ad hoc contingency planning more than it does planned “learning while doing.” This gap between theory and practice leads to profound disparities between how agencies justify decisions and how adaptive management in practice arrives at the courthouse doorsteps. In Part II we review how these disparities have played out in courts considering claims that agency practice of adaptive management has not lived up to its theoretical promise or to the legal demands of substantive and procedural environmental law. We extract three key themes from the body of case law in this respect. Part III extends from the existing case law to draw lessons for agencies and Congress about the future practice of adaptive management. Our ultimate message to agencies is that a m-lite can be an effective decision method - and one that survives judicial scrutiny - but agencies must be more disciplined about its design and implementation. This includes resisting the temptation to employ adaptive management to dodge burdensome procedural requirements, substantive management criteria, and contentious stakeholder participation. If faithfully followed and enforced, this model, despite its flaws, could serve as an important component of natural resources policy to confront problems of the future as daunting as climate change

Focusing of Intense Subpicosecond Laser Pulses in Wedge Targets

Two dimensional particle-in-cell simulations characterizing the interaction of ultraintense short pulse lasers in the range 10^{18} \leq I \leq 10^{20} W/cm^{2} with converging target geometries are presented. Seeking to examine intensity amplification in high-power laser systems, where focal spots are typically non-diffraction limited, we describe key dynamical features as the injected laser intensity and convergence angle of the target are systematically varied. We find that laser pulses are focused down to a wavelength with the peak intensity amplified by an order of magnitude beyond its vacuum value, and develop a simple model for how the peak location moves back towards the injection plane over time. This performance is sustained over hundreds of femtoseconds and scales to laser intensities beyond 10^{20} W/cm^{2} at 1 \mu m wavelength.Comment: 5 pages, 6 figures, accepted for publication in Physics of Plasma