5,296,953 research outputs found

    Black hole entropy in scalar-tensor and f(R) gravity: an overview

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    A short overview of black hole entropy in alternative gravitational theories is presented. Motivated by the recent attempts to explain the cosmic acceleration without dark energy, we focus on metric and Palatini f(R) gravity and on scalar-tensor theories.Comment: 24 pages, latex, to appear in "Entropy in Quantum Gravity", special issue of Entropy, R. Garattini editor

    Light Meson Dynamics Workshop. Mini proceedings

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    The mini-proceedings of the Light Meson Dynamics Workshop held in Mainz from February 10th to 12th, 2014, are presented. The web page of the conference, which contains all talks, can be found at https://indico.cern.ch/event/287442/overview .Comment: 46 pages, 17 contributions. Editors: W. Gradl, P. Masjuan, M. Ostrick, and S. Schere

    An overview of New England's economic performance in 2008

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    Like most of the nation, New England suffered economically in 2008. Job losses, rising unemployment, and slumping real estate markets were all factors in one of the worst years for the region’s economy. Nevertheless, while the recession certainly took its toll, it did not affect New England as much as it did the nation as a whole.Economic conditions - New England

    The economic performance of the New England states in 2004: an overview

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    The year 2004 marked the beginning of New England’s economic turnaround. After three consecutive years of job losses — not to mention 86 years of World Series famine — the region emerged victorious. All six New England states added jobs over the course of the year and experienced reductions in unemployment. Job growth in the region, however, was sluggish compared with the nation overall. Recovery was also reflected in strong exports growth, increases in the economic activity index, and improved consumer confidence. Although consumer price inflation in New England was milder than in recent years, home prices continued to escalate at above-average rates.Economic conditions - New England

    Growing... but slowing? : an overview of New England's economic performance in 2006

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    New England’s economic performance was somewhat mixed during 2006. On one hand, all six states added jobs over the course of the year, and the region’s unemployment rate remained steady. The region as a whole picked up jobs in nearly all major industries. Export values and income and wages also increased. One the other hand, much of the economic growth experienced by the region was slower than that seen in the nation as a whole. Although the unemployment rate did not go up for the region, the nation saw joblessness decrease. Moreover, real estate markets, though weak nationwide, were even weaker in the region.Economic conditions - New England ; Economic conditions - Connecticut ; Economic conditions - Maine ; Economic conditions - Massachusetts ; Economic conditions - New Hampshire ; Economic conditions - Rhode Island ; Economic conditions - Vermont

    In the shadows of the national recovery: an overview of New England's economic performance in 2005

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    Annual review of the economic performance of the New England states.Economic conditions - New England

    Overview of ASDEX Upgrade results

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    The ASDEX Upgrade (AUG) programme is directed towards physics input to critical elements of the ITER design and the preparation of ITER operation, as well as addressing physics issues for a future DEMO design. Since 2015, AUG is equipped with a new pair of 3-strap ICRF antennas, which were designed for a reduction of tungsten release during ICRF operation. As predicted, a factor two reduction on the ICRF-induced W plasma content could be achieved by the reduction of the sheath voltage at the antenna limiters via the compensation of the image currents of the central and side straps in the antenna frame. There are two main operational scenario lines in AUG. Experiments with low collisionality, which comprise current drive, ELM mitigation/suppression and fast ion physics, are mainly done with freshly boronized walls to reduce the tungsten influx at these high edge temperature conditions. Full ELM suppression and non-inductive operation up to a plasma current of Ip = 0.8 MA could be obtained at low plasma density. Plasma exhaust is studied under conditions of high neutral divertor pressure and separatrix electron density, where a fresh boronization is not required. Substantial progress could be achieved for the understanding of the confinement degradation by strong D puffing and the improvement with nitrogen or carbon seeding. Inward/outward shifts of the electron density profile relative to the temperature profile effect the edge stability via the pressure profile changes and lead to improved/decreased pedestal performance. Seeding and D gas puffing are found to effect the core fueling via changes in a region of high density on the high field side (HFSHD). The integration of all above mentioned operational scenarios will be feasible and naturally obtained in a large device where the edge is more opaque for neutrals and higher plasma temperatures provide a lower collisionality. The combination of exhaust control with pellet fueling has been successfully demonstrated. High divertor enrichment values of nitrogen En > 10 have been obtained during pellet injection, which is a prerequisite for the simultaneous achievement of good core plasma purity and high divertor radiation levels. Impurity accumulation observed in the all-metal AUG device caused by the strong neoclassical inward transport of tungsten in the pedestal is expected to be relieved by the higher neoclassical temperature screening in larger devices.This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 under grant agreement number 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.Peer ReviewedPostprint (published version

    Overview

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    Overview of Special Issue: Federal Reserve Policy Responses to the Financial Crisis.Financial crises ; Federal Reserve System ; Bank liquidity

    COVID-19 Supporting resources : COVID-19: overview of quality and standards : information for students' unions

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    Overview

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    Food safety is receiving heightened attention worldwide as the important links between food and health are increasingly recognized. Improving food safety is an essential element of improving food security, which exists when populations have access to sufficient and healthy food. At the same time, as food trade expands throughout the world, food safety has become a shared concern among both developed and developing countries. Governments in many countries have established new institutions, standards, and methods for regulating food safety and have increased investments in hazard control. This set of policy briefs describes how developing countries are addressing food safety issues in order to improve both food security and food trade, and discusses the risks, benefits, and costs when such policies are implemented. "from TextFood safety ,food security ,trade ,health ,Export marketing ,
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