Results 31 to 40 of about 966,932 (257)

Local-Scale Cereal Yield Forecasting in Italy: Lessons from Different Statistical Models and Spatial Aggregations

open access: yesAgronomy, 2020
Statistical, data-driven methods are considered good alternatives to process-based models for the sub-national monitoring of cereal crop yields, since they can flexibly handle large datasets and can be calibrated simultaneously to different areas.
David García-León   +3 more
doaj   +1 more source

Comparison of Highbush Blueberry (Vaccinium corymbosum L.) under Ridge and Pot Production

open access: yesAgriculture, 2021
Due to the specific requirements for low soil pH, new production methods are being introduced for highbush blueberry (Vaccinium corymbosum L.). Planting in pots has gained popularity in recent years due to the easier control of the substrate pH.
Tina Smrke   +4 more
doaj   +1 more source

On a conjecture of Ridge [PDF]

open access: yesProceedings of the American Mathematical Society, 1997
Summary: The conjecture of Ridge on the numerical range of a shift of periodic weights is resolved in the affirmative, i.e., if the weights are nonzero, the numerical range of the corresponding shift is an open disc centered at the origin. The radius of the disc can be expressed as the Perron root of a nonnegative irreducible symmetric matrix.
openaire   +2 more sources

Grafts for Ridge Preservation [PDF]

open access: yesJournal of Functional Biomaterials, 2015
Alveolar ridge bone resorption is a biologic phenomenon that occurs following tooth extraction and cannot be prevented. This paper reviews the vertical and horizontal ridge dimensional changes that are associated with tooth extraction. It also provides an overview of the advantages of ridge preservation as well as grafting materials.
Robert E. Cohen, Amal Jamjoom
openaire   +3 more sources

Wavelet Ridges in EEG Diagnostic Features Extraction: Epilepsy Long-Time Monitoring and Rehabilitation after Traumatic Brain Injury

open access: yesSensors, 2021
Interchannel EEG synchronization, as well as its violation, is an important diagnostic sign of a number of diseases. In particular, during an epileptic seizure, such synchronization occurs starting from some pairs of channels up to many pairs in a ...
Yury Vladimirovich Obukhov   +4 more
doaj   +1 more source

On ridge operators

open access: yesLinear Algebra and its Applications, 2008
AbstractLet X be an n by p matrix, and define RX(λ)=X(X′X+λPX′)-X′, which is called a ridge operator, where λ is a nonnegative constant (called the ridge parameter), and PX′=X′(XX′)-X. Various properties of RX(λ) were discussed, including additive decompositions of this matrix similar to those of PX≡RX(0)=X(X′X)-X′, the orthogonal projector onto the ...
Yoshio Takane, Haruo Yanai
openaire   +2 more sources

Bose enhancement and the ridge

open access: yesPhysics Letters B, 2015
We point out that Bose enhancement in a hadronic wave function generically leads to correlations between produced particles. We show explicitly, by calculating the projectile density matrix in the Color Glass Condensate approach to high-energy hadronic collisions, that the Bose enhancement of gluons in the projectile leads to azimuthal collimation of ...
Tolga Altinoluk   +4 more
openaire   +5 more sources

Energy and system dependence of high-$p_T$ triggered two-particle near-side correlations [PDF]

open access: yes, 2008
Previous studies have indicated that the near-side peak of high-$p_T$ triggered correlations can be decomposed into two parts, the \textit{Jet} and the \textit{Ridge}.
B.B. Back   +14 more
core   +2 more sources

Power Plant Energy Predictions Based on Thermal Factors Using Ridge and Support Vector Regressor Algorithms

open access: yesEnergies, 2021
This work aims to model the combined cycle power plant (CCPP) using different algorithms. The algorithms used are Ridge, Linear regressor (LR), and upport vector regressor (SVR).
Asif Afzal   +4 more
doaj   +1 more source

Fluctuations in initial energy density distributions in A + A collisions [PDF]

open access: yesЯдерна фізика та енергетика, 2010
The analysis of particle correlations as a function of relative pseudo-rapidity and azimuthal angle exhibit novel ridge-like structures that were discovered at RHIC in A + A collisions.
M. S. Borysova   +2 more
doaj  

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