نتایج جستجو برای: objective big bang

تعداد نتایج: 629258  

Journal: :فلسفه و کلام 0

cosmo-theological argument is one of the theological arguments for [proving] the existence of god, which has been mooted since long ago and has recently been recognized in the theo-philosophical tradition of the west and become famous as theological argument. while examining the viewpoints related to the appearance of the world, particularly the big bang theory, this article undertakes to analy...

2013
Erich Alfred Gombocz

Innovation in healthcare delivery and Pharma requires rethinking old problems, retooling with new methodologies and revisiting the process models that are foundations of our existing knowledge discovery and clinical practice. The continuing proliferation of ubiquitous sensor data, mobile devices and the advent of 3D printing of drugs, together with a social mind shift in data ownership are clea...

1998
M. Borunda

Departamento de F́ısica Teórica Instituto de F́ısica Universidad Nacional Autónoma de México Apartado Postal 20-364 01000 México, D.F Abstract : The beautiful scenario of pre-big-bang cosmology is appealling not only because it is more or less derived from string theory, but also because it separates clearly the problem of the initial conditions for the universe from that of high curvatures. Rece...

2006
Ari Brynjolfsson Lori M. Lubin

In 2001 Lori M. Lubin and Allan Sandage, using big-bang cosmology for interpreting the data, found the surface brightness of galaxies to be inversely proportional to about the third power of (1+z), while the contemporary big-bang cosmology predicts that the surface brightness is inversely proportional to the fourth power of (1+z). In contrast, these surface brightness observations are in agreem...

2016
Nan Tang Qing Chen Prasenjit Mitra

A graph stream, which refers to the graph with edges being updated sequentially in a form of a stream, has important applications in cyber security and social networks. Due to the sheer volume and highly dynamic nature of graph streams, the practical way of handling them is by summarization. Given a graph stream G, directed or undirected, the problem of graph stream summarization is to summariz...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - پژوهشکده برق 1391

الگوریتم انفجار بزرگ انهدام بزرگ (big bang big crunch) یک الگوریتم بهینه سازی است که در این پایان نامه مسائل چندهدفه، بوسیله ی آن بهینه سازی شده است. برای ارزیابی کارایی و توانایی بهبودهای پیشنهادی، از دو مسئله مهندسی استفاده شده است. توزیع اقتصادی واحدهای تولید همزمان در سیستم های قدرت، یک مسئله بهینه سازی دو هدفه می باشدکه دارای محدودیت های تساوی و نامساوی متعددی است. الگوریتم bbbc به گونه ای...

1998
A. Ghosh G. Veneziano

We solve exactly the (linear-order) equations for tensor and scalar perturbations over the homogeneous, isotropic, open pre-big bang model recently discussed by several authors. We find that, in spite of claims to the contrary, vacuum quantum fluctuations, although parametrically amplified, remain negligible throughout the perturbative pre-big bang phase. PACS number(s): 98.80.Cq, 04.30.Db Type...

2008
SAUL RAPPAPORT SCOTT BURLES

Using standard big-bang nucleosynthesis and present, high-precision measurements of light element abundances, we place constraints on the self-gravity of radiation pressure in the early universe. The self-gravity of pressure is strictly non-Newtonian, and thus the constraints we set are a direct test of this aspect of general relativity. Subject headings: general relativity; Friedmann equation;...

2001
Alessandra Buonanno Thibault Damour

In pre-big-bang string cosmology one uses a phase of dilaton-driven inflation to stretch an initial (microscopic) spatial patch to the (much larger) size of the big-bang fireball. We show that the dilaton-driven inflationary phase does not naturally iron out the initial classical tensor inhomogeneities unless the initial value of the string coupling is smaller than gin . 10 −35.

2006
Dongsu Bak

Starting from the Janus solution and its gauge theory dual, we obtain the dual gauge theory description of the cosmological solution by the procedure of doubleWick rotation. The coupling is driven either to zero or to infinity at the big-bang and big-crunch singularities, which are shown to be related by the S-duality symmetry. In the dual Yang-Mills theory description, these are non singular a...

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