21,977 research outputs found
Detecting synchronization in spatially extended discrete systems by complexity measurements
The synchronization of two stochastically coupled one-dimensional cellular
automata (CA) is analyzed. It is shown that the transition to synchronization
is characterized by a dramatic increase of the statistical complexity of the
patterns generated by the difference automaton. This singular behavior is
verified to be present in several CA rules displaying complex behavior.Comment: 4 pages, 2 figures; you can also visit
http://add.unizar.es/public/100_16613/index.htm
Narration as total art in the novels and stories of Luisa Mercedes Levinson
Los relatos de Luisa Mercedes Levinson se caracterizan por la utilización de múltiples códigos. Resulta significativa en este sentido la presencia en su obra del teatro y de la música. La autora juega con diferentes códigos genéricos: novela sentimental, tragedia, literatura fantástica y cuento realista. La utilización de ciertas técnicas narrativas como el monólogo interior hace, por otra parte, que en ocasiones las fronteras entre verso y prosa parezcan borrarseThe stories by Luisa Mercedes Levinson are characterised by her introduction of numerous codes. In this sense the presence of the theatre and music in her work is significant. In turn, the author plays with the different generic codes: sentimental novels, tragedy, fantasy literature and realistic fiction. The use of certain narrative techniques such as the interior monologue means that, occasionally, the boundaries between verse and prose seem to fade awa
Separability conditions from the Landau-Pollak uncertainty relation
We obtain a collection of necessary (sufficient) conditions for a bipartite
system of qubits to be separable (entangled), which are based on the
Landau-Pollak formulation of the uncertainty principle. These conditions are
tested, and compared with previously stated criteria, by applying them to
states whose separability limits are already known. Our results are also
extended to multipartite and higher-dimensional systems.Comment: 20 page
Tax Reforms in an Endogenous Growth Model with Pollution
This paper discusses the effects of a green tax reform in an AK growth model without abatement activities and with a negative environmental externality in utility function. There is also a non-optimal level of public spending. The results depend on the financing source of public spending. When there is not public debt, a revenue-neutral green tax reform has not any effect on pollution, growth and welfare. On the contrary, when short-run deficits are financed by debt issuing, a variety of green tax reforms increase welfare. Nevertheless, in this framework, non-green tax reforms are also welfare improving.Environmental externalities, Economic growth, Pollution taxes, Laffer Curve.
Environmental fiscal policies might be ineffective to control pollution
In a one sector growth model with pollution in the utility function, the competitive equilibrium can be indeterminate for plausible values of the intertemporal substitution elasticity of consumption and under constant returns to scale. The tax rate on pollution does not enter the condition characterizing indeterminacy. This means that the government is not able to control emissions in the economy by using environmental policies. Non-separability between private consumption and pollution in the utility function is crucial for this result.Indeterminacy, Environmental taxes, Pollution
Feasibility and reliability of a Physical Fitness test battery in individuals with Down Syndrome
Background: Down syndrome (DS) is a genetic disorder that occurs because of an abnormal
division between cells that results in an extra copy of chromosome 21. Some studies show that
physical exercise in people with DS increases some cognitive capacities, such as memory, and improves
the quality of life. Aim: The main aim of this study was to perform an analysis of the reliability
and feasibility of the SAMU-Disability Fitness (DISFIT) battery in adults with DS. Methods: A
cross-sectional study with a test–retest design was performed in a maximum interval of 2 weeks in
37 subjects (11 women and 26 men) aged between 21 and 58 years old with DS. Eight field-based
fitness tests were proposed to assess the physical fitness (PF) of adults with DS: Body Mass Index
(BMI), Waist Circumference (WC), the Timed Up and Go test (TUG), the Deep Trunk Flexibility test
(DTF), the Hand Grip test (HG), the Timed Stand Test (TST), the 30-s Sit-Up (SUP) and the 6-Min
Walk Test (6MWT). Results: The intra-class correlation coefficient (ICC) in all the tests was good
and high (>0.80), except for the 6MWT, whose reliability was fair. Conclusion: The SAMU-DISFIT
battery is a reliable and feasible physical fitness battery which has been created with the purpose
of establishing tests which measure the four basic components of PF (flexibility, cardiorespiratory
fitness, musculoskeletal fitness and motor fitness) in adults with D
Double Dividend in an Endogenous Growth Model with Pollution and Abatement
This paper discusses wether by implementing an environmental tax reform, a government may achieve a double dividend. We consider the simplest endogenous growth model (AK model) and include a negative environmental externality in the utility function. Pollution flow can be reduced by means of private abatenment activities. There is a predetermined non-optimal level of public spending financed by environmental taxes and pre-existing taxes on income and consumption. The major contribution of the paper is to show that, under this simple framework, a double dividend may arise if tax reform consists of substituing environmental tax for income tax, in such a way that the government budget constraint holds in a present value sense.Environmental tax reform, Double dividend, Abatement activities.
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