نتایج جستجو برای: anthropic influence

تعداد نتایج: 614482  

Journal: :Galaxies 2022

According to the weak formulation of anthropic principle, all fundamental physical constants have just such values that they enabled origin life. In this survey paper, we demonstrate also current value Hubble–Lemaître constant essentially contributed existence humankind. Life on Earth has existed continually for at least 3.5 Gyr, and requires very stable conditions during quite long time interv...

2007
Michael L. Graesser Michael P. Salem

It is possible that the scale of gravity, parametrized by the apparent Planck mass, may obtain different values within different universes in an encompassing multiverse. We investigate the range over which the Planck mass may scan while still satisfying anthropic constraints. The window for anthropically allowed values of the Planck mass may have important consequences for landscape predictions...

Journal: :Revista de saude publica 1995
O P Forattini I Kakitani E Massad D Marucci

Behaviour comparisons of Aedes scapularis and Ae. serratus are presented. Results were obtained by sampling Aedes adult mosquitoes at several places in the rural anthropic environment in the Ribeira Valley region of S. Paulo State, Brazil. Aedes dominance was shared by those two species, but Ae. scapularis showed a clear tendency to frequent the modified environment, while Ae. serratus was to b...

2003
J. Garriga A. Vilenkin

In the context of models where the dark energy density rD is a random variable, anthropic selection effects may explain both the ‘‘old’’ cosmological constant problem and the ‘‘time coincidence.’’ We argue that this type of solution to both cosmological constant problems entails a number of definite predictions, which can be checked against upcoming observations. In particular, the anthropic ap...

Journal: :Revista de saude publica 1998
O P Forattini

A review is presented of the relationships between the so-called emerging infectious diseases and what may be defined as emerging vectors. These include not only those that have recently appeared but also those that present remarkable behavioral changes. Specific factors leading to that emergence can be associated with the powerful human influence on the environment. So the man-made, i.e. anthr...

2012
Vít PENÍŽEK Tereza ZÁDOROVÁ

Mountainous areas represent regions with specific soil cover pattern that is naturally given by an altitudinal gradient. The objective of our study was to describe the soil cover development on the altitudinal gradient under changed environment given by man-planted vegetation and acidification. The studied area is characterized by spruce monoculture planting that replaced the original broadleaf...

2008
Michael Dine

There is evidence that string theory possesses a large discretuum of stable and/or metastable ground states, with zero or four supersymmetries in four dimensions. I discuss critically the nature of this evidence. Assuming this “landscape” exists, anthropic explanations of some quantities are almost inevitable. I explain that this landscape is likely to lead to a prediction of low energy supersy...

2002
Milan M. Ćirković

The recent surge of interest in the origin of the temporal asymmetry of thermodynamical systems (including the accessible part of the universe itself) put forward two possible explanatory approaches to this age-old problem. Hereby we show that there is a third possible alternative, based on the generalization of the classical (“Boltzmann-Schuetz”) anthropic fluctuation picture of the origin of ...

2011
Jason Pollack Paul Steinhardt

The cyclic model resolves the homogeneity and atness problems of big bang cosmology via a period of ultra-slow contraction rather than the accelerated expansion found in in ationary schemes. Patches of space in the four-dimensional e ective theory undergo repeated big bangs, thus allowing the introduction of timescales far greater than the 14 billion years since the last one. The conditions imp...

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