Results 61 to 70 of about 966,932 (257)

The design and results of the study of the comb-forming fertilizer [PDF]

open access: yesBIO Web of Conferences
The article presents the results of research into the physical and mechanical properties of soils and fertilizers, the effectiveness of the method of applying mineral fertilizers layer by layer on the formed dams, the development of the design of ...
Abdurakhmonovich Razzakov Bakhodirjon   +4 more
doaj   +1 more source

Interpolation by Ridge Functions

open access: yesJournal of Approximation Theory, 1993
The authors study the interpolation properties by the linear combination of ridge functions of the form \(f(\widehat {a}\cdot \widehat {x})\) where \(f: \mathbb{R}\to\mathbb{R}\); \(\overline{x}= (x_ 1,x_ 2,\dots,x_ d)\in\mathbb{R}^ d\); \(\widehat {a}\in \mathbb{R}^ d\setminus \{\widehat {0}\}\) and \(\widehat {a}\cdot \widehat{x}= \sum_{i=1}^ d a_ i ...
Dietrich Braess, Allan Pinkus
openaire   +2 more sources

Introduction to the Special Issue: From RIDGE to Ridge 2000 [PDF]

open access: yesOceanography, 2012
Articles in this special issue of Oceanography represent a compendium of research that spans the disciplinary and thematic breadth of the National Science Foundation's Ridge 2000 Program, as well as its geographic focal points. The mid-ocean ridge (MOR) crest is where much of Earth's volcanism is focused and where most submarine volcanic activity ...
Fornari, Daniel J.   +4 more
openaire   +4 more sources

Lecture notes on ridge regression

open access: yes, 2020
The linear regression model cannot be fitted to high-dimensional data, as the high-dimensionality brings about empirical non-identifiability. Penalized regression overcomes this non-identifiability by augmentation of the loss function by a penalty (i.e ...
van Wieringen, Wessel N.
core  

Chemical Heterogeneities along the South Atlantic Mid-Ocean-Ridge (5-11°S): Shallow or Deep Recycling of Ocean Crust? [PDF]

open access: yes, 2011
Between 5° and 11°S, the Mid-Atlantic Ridge displays anomalous crustal thickness and geochemical compositions, thought to be related to either small scale upper mantle heterogeneities or a weak, diffuse mantle plume.
Garbe-Schönberg, Dieter   +5 more
core  

Addressing the physics of the ridge by 2- and 3-particle correlations at STAR

open access: yes, 2009
We present new results on 2-particle azimuthal ($\Delta\phi$) correlation relative to event plane and 3-particle pseudorapidity ($\Delta\eta$) correlation at mid-rapidity in Au+Au collisions at $\sqrt{{\it s}_{NN}}$ = 200 GeV, measured by the STAR ...
Adams   +13 more
core   +1 more source

Children and poverty across Europe - The challenge of developing child centred policies [PDF]

open access: yes, 2007
Although poor children are often the target of policy, policy itself is rarely informed by their subjective concerns. This article takes a child-centred approach to understanding the lives and experiences of children who are poor and explores how policy ...
Ridge, Tess
core   +1 more source

The Matrix Ridge Approximation: Algorithms and Applications [PDF]

open access: yes, 2013
We are concerned with an approximation problem for a symmetric positive semidefinite matrix due to motivation from a class of nonlinear machine learning methods. We discuss an approximation approach that we call {matrix ridge approximation}.
Zhang, Zhihua
core  

Boosting ridge regression [PDF]

open access: yesComputational Statistics & Data Analysis, 2007
Ridge regression is a well established method to shrink regression parameters towards zero, thereby securing existence of estimates. The present paper investigates several approaches to combining ridge regression with boosting techniques. In the direct approach the ridge estimator is used to fit iteratively the current residuals yielding an alternative
Tutz, Gerhard, Binder, Harald
openaire   +3 more sources

Deconstructing blazars: A different scheme for jet kinematics in flat-spectrum AGN [PDF]

open access: yes, 2011
Recent VLBI studies of the morphology and kinematics of individual BL Lac objects (S5 1803+784, PKS 0735+178, etc.) have revealed a new paradigm for the pc-scale jet kinematics of these sources.
A. Eckart   +73 more
core   +1 more source

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