1,772 research outputs found
Effect of Loops on the Vibrational Spectrum of Percolation Network
We study the effects of adding loops to a critical percolation cluster on the
diffusional, and equivalently, (scalar) elastic properties of the fractal
network. From the numerical calculations of the eigenspectrum of the transition
probability matrix, we find that the spectral dimension and the walk
dimension change suddenly as soon as the floppy ends of a critical
percolation cluster are connected together to form relatively large loops, and
that the additional inclusion of successively smaller loops only change these
exponents little if at all. This suggests that there is a new universality
class associated with the loop-enhanced percolation problem.Comment: 12 pages, LaTeX, HLRZ 107/9
Testing for new physics in singly Cabibbo suppressed D decays
We devise tests for a new physics origin of the recently measured direct CP
violation in singly Cabibbo suppressed D decays. The tests take the form of sum
rules for the CP asymmetries in various D decays. They are based on the fact
that within the standard model CP violation arises from interference of the
dominant tree amplitudes with the Delta I=1/2 penguin amplitudes. The sum rules
would be violated if the observed CP violation is due to new physics
contributions to the effective weak Hamiltonian that change isospin by Delta
I=3/2.Comment: 6 page
REFINING THE ROLE OF THE CORPORATION: THE IMPACT OF CORPORATE SOCIAL RESPONSIBILITY ON SHAREHOLDER PRIMACY THEORY
[Evidence indicates that we may be witnessing a redefinition of traditional theories of the role of the corporation. Traditional shareholder primacy theory contends that a corporation is primarily responsible to its share- holders to maximise wealth, consequently social factors should not inter- fere in a corporation’s business operations. In the modern business setting however, a company’s core objective of profit maximisation must be un- derpinned by a proactive approach to corporate social responsibility in order to manage and mitigate a broader array of risk factors. Managing risk via community engagement and the implementation of socially re- sponsible strategies is increasingly linked to business success and stake- holder confidence. Intangibles such as trust, ethics, corporate culture, employee satisfaction, environmental behaviour and community responsi- bility are increasingly relevant to consumers, business partners, govern- ments, special interest groups, existing and potential employees and investors.]
Assessing the size of the affordability problem in scholarly publishing
For many decades, the hyperinflation of subscription prices for scholarly journals have concerned scholarly institutions. After years of fruitless efforts to solve this “serials crisis”, open access has been proposed as the latest potential solution. However, also the prices for open access publishing are high and are rising well beyond inflation. What has been missing from the public discussion so far is a quantitative approach to determine the actual costs of efficiently publishing a scholarly article using state-of-the-art technologies, such that informed decisions can be made as to appropriate price levels. Here we provide a granular, step-by-step calculation of the costs associated with publishing primary research articles, from submission, through peer-review, to publication, indexing and archiving. We find that these costs range from less than US1,000 per article in prestigious journals with rejection rates exceeding 90%. The publication costs for a representative scholarly article today come to lie at around US$400. We discuss the additional non-publication items that make up the difference between publication costs and final price
Current market rates for scholarly publishing services
For decades, the supra-inflation increase of subscription prices for scholarly journals has concerned scholarly institutions. After years of fruitless efforts to solve this “serials crisis”, open access has been proposed as the latest potential solution. However, the prices for open access publishing are also high and are rising well beyond inflation. What has been missing from the public discussion so far is a quantitative approach to determine the actual costs of efficiently publishing a scholarly article using state-of-the-art technologies, such that informed decisions can be made as to appropriate price levels. Here we provide a granular, step-by-step calculation of the costs associated with publishing primary research articles, from submission, through peer-review, to publication, indexing and archiving. We find that these costs range from less than US1,000 per article in prestigious journals with rejection rates exceeding 90%. The publication costs for a representative scholarly article today come to lie at around US$400. We discuss the additional non-publication items that make up the difference between publication costs and final price
Current market rates for scholarly publishing services
For decades, the supra-inflation increase of subscription prices for scholarly journals has concerned scholarly institutions. After years of fruitless efforts to solve this “serials crisis”, open access has been proposed as the latest potential solution. However, the prices for open access publishing are also high and are rising well beyond inflation. What has been missing from the public discussion so far is a quantitative approach to determine the actual costs of efficiently publishing a scholarly article using state-of-the-art technologies, such that informed decisions can be made as to appropriate price levels. Here we provide a granular, step-by-step calculation of the costs associated with publishing primary research articles, from submission, through peer-review, to publication, indexing and archiving. We find that these costs range from less than US1,000 per article in prestigious journals with rejection rates exceeding 90%. The publication costs for a representative scholarly article today come to lie at around US$400. We discuss the additional non-publication items that make up the difference between publication costs and final price
Implications of a Low sin(2 beta): A Strategy for Exploring New Flavor Physics
We explore the would-be consequences of a low value of the CP-violating phase
. The importance of a reference triangle obtained from
measurements that are independent of -- and -- mixing is
stressed. It can be used to extract separately potential New Physics
contributions to mixing in the , and systems. We discuss several
constructions of this triangle, which will be feasible in the near future. The
discrete ambiguity is at most two-fold and eventually can be completely
removed. Simultaneously, it will be possible to probe for New Physics in
loop-dominated rare decays.Comment: 9 pages, 6 figure
Discrete Ambiguities in the Measurement of the Weak Phase Gamma
Several time-independent methods have been devised for measuring the phase
gamma of the Cabibbo-Kobayashi-Maskawa unitarity triangle. It is shown that
such measurements generally suffer from discrete ambiguity which is at least
8-fold, not 4-fold as commonly stated. This has serious experimental
implications, which are explored in methods involving B->DK decays. The
measurement sensitivity and new physics discovery potential are estimated using
a full Monte Carlo detector simulation with realistic background estimates.Comment: 15 pages, 2 figures, fixed typ
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