نتایج جستجو برای: weight dispersion

تعداد نتایج: 410014  

Journal: :Accident; analysis and prevention 2008
Dominique Lord Peter Young-Jin Park

Traditionally, transportation safety analysts have used the empirical Bayes (EB) method to improve the estimate of the long-term mean of individual sites; to correct for the regression-to-the-mean (RTM) bias in before-after studies; and to identify hotspots or high risk locations. The EB method combines two different sources of information: (1) the expected number of crashes estimated via crash...

Journal: :Acta crystallographica. Section D, Biological crystallography 2000
Z Dauter M Dauter K R Rajashankar

A quick (less than 1 min) soak of protein crystals in a cryo-solution containing bromide or iodide anions leads to incorporation of these anomalous scatterers into the ordered solvent region around the protein molecules. These halide anions provide a convenient way of phasing through their anomalous scattering signal: bromides using multiwavelength anomalous dispersion (MAD) and bromides and/or...

Journal: :Physical review letters 2007
Alexandru Macridin M Jarrell Thomas Maier D J Scalapino

Employing dynamical cluster quantum Monte Carlo calculations we show that the single-particle spectral weight A(k,omega) of the one-band two-dimensional Hubbard model displays a high-energy kink in the quasiparticle dispersion followed by a steep dispersion of a broad peak similar to recent angle-resolved photoemission spectroscopy results reported for the cuprates. Based on the agreement betwe...

Journal: :Scientific Annals of Economics and Business 2023

Dispersion measurement and tuning constants are critical aspects of a model's robustness efficiency. However, in the presence outliers, standard deviation is not reliable measure dispersion Huber's weight. This research aimed to assess efficacy Huber weight function terms constant. The simulation study was conducted on hybrid autoregressive (AR) model generalized conditional heteroscedasticity ...

2016
Sumio Iijima

Due to their remarkable mechanical properties, multiwall carbon nanotubes (MWCNTs) are considered by many researchers to be a highly promising filler and reinforcement agent for enhanced performance cementitious materials. Currently, however, achieving an effective dispersion of MWCNTs remains a major challenge in developing high performance nano-cementitious composites, since carbon nanotubes ...

2017
Yuto Ooi Itsuo Hanasaki Daiki Mizumura Yu Matsuda

We report that the addition of a small amount of cellulose nanofibers (CNFs) into an aqueous dispersion of colloidal particles suppresses the coffee-ring effect when the dispersion dries on a solid substrate, as revealed by the computational analysis of experimental time-series images and by particle image velocimetry. The addition of CNFs is much more effective than the increase of colloidal p...

2015
Xingchen Ye Chenhui Zhu Peter Ercius Shilpa N Raja Bo He Matthew R Jones Matthew R Hauwiller Yi Liu Ting Xu A Paul Alivisatos

Multicomponent nanocrystal superlattices represent an interesting class of material that derives emergent properties from mesoscale structure, yet their programmability can be limited by the alkyl-chain-based ligands decorating the surfaces of the constituent nanocrystals. Polymeric ligands offer distinct advantages, as they allow for more precise tuning of the effective size and 'interaction s...

2010
Andrew J. Patton Allan Timmermann

Key sources of disagreement among economic forecasters are identified by using data on cross-sectional dispersion in forecasters’ longand short-run predictions of macroeconomic variables. Dispersion among forecasters is highest at long horizons where private information is of limited value and lower at short forecast horizons. Moreover, differences in views persist through time. Such difference...

2007
H Acharya SK Srivastava Anil K Bhowmick

Ethylene propylene diene terpolymer (EPDM)/MgAl layered double hydroxide (LDH) nanocomposites have been synthesized by solution intercalation using organically modified LDH (DSLDH). The molecular level dispersion of LDH nanolayers has been verified by the disappearance of basal XRD peak of DS-LDH in the composites. The internal structures, of the nanocomposite with the dispersion nature of LDH ...

2007
Paweł BŁASZCZYK Katarzyna STĄPOR

The purpose of the paper is to propose a new method for classification. Our MSPLS method was deduced from the classic Partial Least Squares (PLS) algorithm. In this method we applied the Maximum Separation Criterion. On the basis of the approach we are able to find such weight vectors that the dispersion between the classes is maximal and the dispersion within the classes is minimal. In order t...

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