نتایج جستجو برای: missing atom types

تعداد نتایج: 595342  

Journal: :Chemical communications 2007
Steven P Rannard Susanne H Rogers Robert Hunter

The first atom transfer radical graft copolymerisation at ambient temperature in water from a soluble polysaccharide is demonstrated for a range of monomer types.

2015
Yang Hongli

Data missing usually happens in the process of data collection, transmission, processing, preservation and application due to various reasons. In the research of face recognition, the missing of image pixel value will affect feature extraction. How to extract local feature from the incomplete data is an interesting as well as important problem. Nonnegative matrix factorization (NMF) is a low ra...

Journal: :Journal of The Optical Society of America B-optical Physics 2022

Dynamics of atom–field correlations and single-mode nonclassicalities present in the resonant Jaynes–Cummings model are investigated using negativity entanglement potential for a set initial states. The study has revealed interplay among three different types established that nonclassicality is continuously exchanged between field atom through correlations. Further, it observed does not capture...

Journal: :Bioinformatics 2012
Daniel J. Stekhoven Peter Bühlmann

MOTIVATION Modern data acquisition based on high-throughput technology is often facing the problem of missing data. Algorithms commonly used in the analysis of such large-scale data often depend on a complete set. Missing value imputation offers a solution to this problem. However, the majority of available imputation methods are restricted to one type of variable only: continuous or categorica...

Journal: :Economics Letters 2012

Journal: :Biometrics 2009
Hua Chen Zhi Geng Xiao-Hua Zhou

In this article, we first study parameter identifiability in randomized clinical trials with noncompliance and missing outcomes. We show that under certain conditions the parameters of interest are identifiable even under different types of completely nonignorable missing data: that is, the missing mechanism depends on the outcome. We then derive their maximum likelihood and moment estimators a...

2012
Kousick Biswas

In a clinical study missing data can occur for various reasons, with or without any actual loss of study participants because of drop-outs. Poorly designed assessment schedules or use of inefficient data collection tools can result in missed visits or omissions of questions and, thus, missing data. Some simple adjustments in the assessment schedule or minor modifications in the data collection ...

In the present study, temporal behavior of entanglement between photonic binomial distributions and a two-level atom in a leaky cavity, in equilibrium with the environment at a temperature T, is studied. In this regard, the master equation is solved in the secular approximation for the density matrix, when the initial photonic distribution is binomial, while the atomic states obey the Boltzmann...

2016
T. Abe K. Hono T. Hashizume A. Jimbo G. Carinci D. Hess T. Satoh K. Hirano T. Sakurai H. Pickering

The aging process in A1-Li alloys was studied by an atom-probe FIM. Two types of precipitates were recognized in the FIM image, one is brightly imaged with a high degree of order in its structure and the other appeared dark against the Al matrix. Atom-probe analysis showed that the Li concentration is in a range of 10 to 25 at% in the dark precipitate and approximately 25 at% in the bright prec...

Journal: :Protein and peptide letters 2008
Yong Chao Li Zong-Hao Zeng

The number of atom-atom contacts in long distance can fit to the experimental binding energies in a dataset containing 151 experimental data with the correlation coefficient about 0.68. Based on this factor, a set of distance-dependent empirical potentials for various types of short-distance (2.4 A-5 A) contacts was obtained by guided fitting, i.e. a set of two parameters fitting. Incorporation...

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