نتایج جستجو برای: semi distribution model

تعداد نتایج: 2686363  

Journal: :Proceedings of the Japan Academy, Series A, Mathematical Sciences 1969

1994
Aram KOTZINIAN

The quark-parton model calculation including the effects of intrinsic transverse momentum and of all six twist-two distribution functions of quarks in polarized nucleons is performed. It is demonstrated that new twist-two quark distribution functions and polarized quark fragmentation functions can be investigated in semi-inclusive DIS at leading order inQ2. The general expression for the cross-...

Journal: :Quantum Information Processing 2021

This article provides the unconditional security of a semi quantum key distribution (SQKD) protocol based on 3-dimensional states. By deriving lower bound for rate, in asymptotic scenario, as function channel’s noise, we find that this has improved secret rate with much more tolerance noise compared to previous 2-dimensional SQKD protocol. Our results highlight that, similar fully protocol, inc...

Journal: :Wireless Networks 2009
Ming Zhao Wenye Wang

We propose a novel mobility model, named Semi-Markov Smooth (SMS) model, to characterize the smooth movement of mobile users in accordance with the physical law of motion in order to eliminate sharp turns, abrupt speed change and sudden stops exhibited by existing models. We formulate the smooth mobility model by a semi-Markov process to analyze the steady state properties of this model because...

2015
Yongchao Liu Huifu Xu

Reward-risk ratio optimization is an important mathematical approach in finance [54]. In this paper, we revisit the model by considering a situation where an investor does not have complete information on the distribution of the underlying uncertainty and consequently a robust action is taken against the risk arising from ambiguity of the true distribution. We propose a distributionally robust ...

Journal: :international journal of iron and steel society of iran 0
m. imaninezhad department of biomedical engineering, saint louis university, saint louis, 63103, mo, usa t. yan department of mechanical engineering, southern illinois university edwardsville, edwardsville, 62026, il usa a. najafizadeh department of materials engineering, fould institue of technology, fould shahar, iran

austenite is a semi-stable phase in most stainless steels that deforms to martensite under md30 and forms martensitetype ά and ε due to the deformation in the steels. since the distribution of strain induced martensite plays animportant role in achieving desired properties, the main objective of the present work is to model martensitedistribution of ά during cold rolling using finite element me...

2008
J. STAUDENMAYER

The t -distribution allows the incorporation of outlier robustness into statistical models while retaining the elegance of likelihood-based inference. In this paper we develop and implement a linear mixed model for the general design of the linear mixed model using the univariate t -distribution. This general design allows a considerably richer class of models to be fit than is possible with ex...

Journal: :Monthly Notices of the Royal Astronomical Society 2021

In this work, we compare large scale structure observables for stellar mass selected samples at $z=0$, as predicted by two galaxy models, the hydrodynamical simulation IllustrisTNG and Santa-Cruz semi-analytic model (SC-SAM). Although both models have been independently calibrated to match observations, rather than each other, find good agreement between two-point clustering assembly bias signa...

2017
Yunchen Pu Zhe Gan Ricardo Henao Chunyuan Li Shaobo Han Lawrence Carin

A new method for learning variational autoencoders (VAEs) is developed, based on Stein variational gradient descent. A key advantage of this approach is that one need not make parametric assumptions about the form of the encoder distribution. Performance is further enhanced by integrating the proposed encoder with importance sampling. Excellent performance is demonstrated across multiple unsupe...

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