Results 91 to 100 of about 169,811,743 (212)

Quantum Gravity: Has Spacetime Quantum Properties? [PDF]

open access: yes, 2009
The conceptual incompatibility between General Relativity and Quantum Mechanics is generally seen as a sufficient motivation for the development of a theory of Quantum Gravity. If - so a typical argumentation - Quantum Mechanics gives a universally valid
Hedrich, Reiner
core  

Pressure Force in the Upper Ankle Joint

open access: yesApplied Sciences
Background: This paper concerns the study of forces acting on the upper ankle joint of a human in static and quasi-dynamic positions. This paper aimed to determine the pressure forces on the axis of the upper ankle joint in the position of the body ...
Jacek Marek Dygut   +1 more
doaj   +1 more source

What Should We do About China? [PDF]

open access: yes, 2013
Former US Director of National Intelligence, Admiral Dennis C. Blair examines the changing role of China in the international system and the challenge it poses for policy makers.
Blair, Dennis C.
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The Global Economy’s Shifting Centre of Gravity

open access: yes, 2011
This article describes the dynamics of the global economy’s centre of gravity, the average location of economic activity across geographies on Earth. The calculations here take into account all the GDP produced on this planet.
Quah, Danny, Danny Quah
core   +1 more source

Preference Erosion: The case of Bangladesh - A SUR-EC-AR Gravity Model of Trade [PDF]

open access: yes
This paper analyses the impact of preference erosion on Bangladesh’s clothing industry coming from both the ATC quotas phasing-out and the reduction on MFN tariffs under NAMA negotiations. First, it undertakes a numerical exercise to estimate the effects
Erika Vianna Grossrieder
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Quantum Gravity: A Primer for Philosophers. [PDF]

open access: yes, 2008
‘Quantum Gravity’ does not denote any existing theory: the field of quantum gravity is very much a ‘work in progress’. As you will see in this chapter, there are multiple lines of attack each with the same core goal: to find a theory that unifies, in ...
Rickles, Dean
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Spherical branes and the BMN matrix quantum mechanics

open access: yesJournal of High Energy Physics
We study the maximally supersymmetric Yang-Mills theory on S d using supersymmetric localisation and holography. We argue that the analytic continuation in dimension to d = 1 yields a Euclidean version of the BMN matrix quantum mechanics. This system can
Nikolay Bobev   +2 more
doaj   +1 more source

International Trade without CES: Estimating Translog Gravity [PDF]

open access: yes
This paper derives a micro-founded gravity equation in general equilibrium based on a translog demand system that allows for endogenous markups and substitution patterns across goods.
Dennis Novy
core  

Non-perturbative 3d Lorentzian quantum gravity [PDF]

open access: yes, 2001
We have recently introduced a discrete model of Lorentzian quantum gravity, given as a regularized non-perturbative state sum over simplicial Lorentzian spacetimes, each possessing a uniqueWick rotation to Euclidean signature.
Ambj¢rn, J.   +11 more
core   +2 more sources

The US Pivot to Asia and The Implications for Australia

open access: yes, 2013
In this Centre of Gravity paper, Professor Robert S. Ross of Boston College and Harvard University examines the US pivot to Asia and what it means for stability in the region and Australia's security.
Ross, Robert
core   +1 more source

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