138,809 research outputs found
A long-lived precision switch actuator for controlling pump-piston action
Switch mechanism limits the stroke of the piston by stopping the piston motor drive. This allows retention of a fluid sample in an automated wet-chemical analysis system
Cosmic Strings, Zero Modes and SUSY breaking in Nonabelian N=1 Gauge Theories
We investigate the microphysics of cosmic strings in Nonabelian gauge
theories with N=1 supersymmetry. We give the vortex solutions in a specific
example and demonstrate that fermionic superconductivity arises because of the
couplings and interactions dictated by supersymmetry. We then use supersymmetry
transformations to obtain the relevant fermionic zero modes and investigate the
role of soft supersymmetry breaking on the existence and properties of the
superconducting strings.Comment: 12 pages, RevTex, submitted to Phys. Rev.
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Equity prices and the real economy - A vector error-correction approach
We assess the impact of equity prices on the level of output in the Europe Union
economies and the US using Vector Error Correction (VECM) time series techniques. The
distinction between impacts in bank based and equity market based economies is shown to be
important, with equity prices having a greater impact on output in market-based economies.
Share prices are shown to be largely autonomous in variance decompositions, whilst equity price
do have a strong impact on output in the UK and US in their variance decompositions. An
analysis of impulse responses suggests that large market based economies have more effective
fiscal and monetary policy instruments
The evolution of the financial crisis of 2007â8
The financial crisis that started in August 2008 reached a climax in the autumn of 2008 with a wave of bank nationalisations across North America and Europe. Although banking crises are not uncommon, this is the largest since 1929â33. This paper discusses the build-up to the crisis, looking at the role of low real interest rates in stimulating an asset price bubble. That bubble was stocked by financial innovation and increases in lending. New financial products were not stress tested and have failed in the downturn. After discussing the bubbles we look at the collapse of the complex asset structure, and then put the crisis in the context of the literature. The paper concludes with a discussion of policy implications of the crisis, and advocates a significant improvement in the regulatory structure
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Shocks and shock absorbers: The International Propagation Of Equity Market Shocks and the design of appropriate policy responses
Equity prices are major sources of shocks to the world economy and channels for
propagation of these shocks. We seek to calibrate macroeconomic effects of falls in share
prices and assess appropriate policy responses, using the National Institute Global
Econometric Model NiGEM. Based on estimated relationships, falls in US equity prices have
significant impacts on global activity; potential for liquidity traps suggest a need for
complementary monetary and fiscal policy easing. However, fiscal easing boosts long-term
real interest rates and hence moderates one of the automatic shock absorbers provided by the
market mechanism
Before Virtue: Halakhah, Dharmasastra, and What Law Can Create
Davis, referring to the traditional Jewish and Hindu legal texts, addresses on what law creates or produces. He focuses on both Jewish and Hindu jurisprudence claim that law can create--a human, not a biological homo sapiens, but rather the full ideal of what humans were meant to be. He argues that it is the essential indistinguishability of law and religion in both traditional Judaism and Hinduism that permits the ideal human to be created through religious law
Capacitance Measurements of Defects in Solar Cells: Checking the Model Assumptions
Capacitance measurements of solar cells are able to detect minute changes in charge in the material. For that reason, capacitance is used in many methods to electrically characterize defects in the solar cell. Standard interpretations of capacitance rely on many assumptions, which, if wrong can skew the results. We explore possible alternate explanations for capacitance transitions, which may not be linked directly to defects, such as a non-ideal back contact, and series resistance
Does European Unemployment Prop up American Wages?
We consider trade between a flexible wage America and a rigid real wage Europe. In a benchmark case, a move from autarky to free trade doubles the European unemployment rate, while it raises the American unskilled wage to the high European level. Entry of the unskilled South to world markets raises unemployment in Europe. But Europe's commitment to the high wage completely insulates America from the shock. Immigration to America raises American income, but lowers European income dollar-for-dollar, while European unemployment rises one-for-one. We consider a stylized game of the choice of factor market institutions. Mitterand's Europe chooses a high minimum wage and Reagan's America chooses a flexible wage for the unskilled. Paradoxically, unskilled workers are worse off in Europe. Trade equalizes wages, but Europeans bear all of the unemployment required to sustain the high wage.
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