نتایج جستجو برای: expectation value

تعداد نتایج: 767918  

1994
Bernd A. Kniehl Michael Spira

We present the two-loop O(αsGFmt ) correction to the bb̄ decay rate of the Standard-Model Higgs boson, assuming that the t quark is much heavier than the Higgs boson. Apart from the universal correction connected with the renormalizations of the wave function and the vacuum expectation value of the Higgs field, this involves vertex corrections specific to the presence of beauty in the final stat...

2005
RALF LEHNERT

This talk discusses the relation between spacetime-dependent scalars, such as couplings or fields, and the violation of Lorentz symmetry. A specific cosmological supergravity model demonstrates how scalar fields can acquire time-dependent expectation values. Within this cosmological background, excitations of these scalars are governed by a Lorentz-breaking dispersion relation. The model also c...

2002
Mark D. Roberts

The Higgs model is generalized so that in addition to the radial Higgs field there are fields which correspond to the themasy and entropy. The model is further generalized to include state and sign parameters. A reduction to the standard Higgs model is given and how to break symmetry using a nonzero VEV (vacuum expectation value) is shown. A ’fluid rotation’ can be performed on the standard Hig...

2000
S. Arunagiri

In this paper, we evaluate the expectation values of four-quark operators for the inclusive beauty decays from the differences in the inclusive total decay rates, assuming that the heavy quark expansion converges at O(1/m). The obtained expectation values values yeilds the ratio τ(Λb)/τ(B) close to the experimental value. We further point out that the quark-hadron duality violation would be rat...

In this paper, we study the linear fractional transportation problem with uncertain arameters. After recalling some definitions, concepts and theorems in uncertainty theory we present three approaches for solving this problem. First we consider the expected value of the objective function together with the expectation of satisfying constraints. Optimizing the expected value of the objective fun...

Journal: :IEEE Intelligent Informatics Bulletin 2010
Dingrong Yuan Xiaofang You Chengqi Zhang

 Abstract—We design a new algorithm for identifying against-expectation patterns. An against-expectation pattern is either an itemset whose support is out of a range of the expected support value, referred to as an against-expectation itemset, or it is an association rule generated by an against-expectation itemset, referred to as an against-expectation rule. Therefore, against-expectation pat...

2008
Yoav Peleg

We use the canonical quantization of spherically symmetric dust universes, and calculate the expectation values of the quantized metric, < Ψ|ĝμν |Ψ >. Though the classical solutions are singular, and the wave functions have no zero support on singular geometries, the expectation value (for a general quantum state) is everywhere regular. For a quasi-classical (coherent) state, |α >, the expectat...

Journal: :journal of health management and informatics 0
mohtaram nematolahi mojtaba kafashi roxana sharifian hossein monem

i n troduction: users’ behavioral intention to use the picture archiving and communication system (pacs) is important in the systems’ success and is an indicator of the users’ satisfaction with commitment and dependence on information systems. the present study aimed to evaluate the users’ continuous intention to use pacs based on the expectation confirmation model in educational hospitals of s...

2006
Albert R. Meyer

The expectation of a random variable is its average value, where each value is weighted according to the probability that it comes up. The expectation is also called the expected value or the mean of the random variable. For example, suppose we select a student uniformly at random from the class, and let R be the student’s quiz score. Then E [R] is just the class average —the first thing everyo...

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