Results 21 to 30 of about 1,144,996 (392)

Surface network extraction from high resolution digital terrain models

open access: yesJournal of Spatial Information Science, 2021
A surface network is a topological data structure formed by a set of thalwegs and ridges on a digital terrain model. Its computation relies on the detection of saddles on the terrain.
Eric Guilbert
doaj   +1 more source

SARS-CoV-2 variants impact RBD conformational dynamics and ACE2 accessibility

open access: yesFrontiers in Medical Technology, 2022
Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has killed over 6 million people and is having a devastating social and economic impact around the world. The rise of new variants of concern
Mariana Valério   +11 more
doaj   +1 more source

Fruit Quality and Yield of Three Highbush Blueberry (Vaccinium corymbosum L.) Cultivars Grown in Two Planting Systems under Different Protected Environments

open access: yesHorticulturae, 2021
Due to the increasing interest in highbush blueberry (Vaccinium corymbosum L.) among consumers, together with the problems of climate change and specific substrate requirements, a novel approach to intensive blueberry production is required. Here, ‘Duke’,
Tina Smrke   +5 more
doaj   +1 more source

AgeGuess, a Methylomic Prediction Model for Human Ages

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
Aging was a biological process under regulations from both inherited genetic factors and various molecular modifications within cells during the lifespan.
Xiaoqian Gao   +7 more
doaj   +1 more source

An In-Line Coaxial-to-Waveguide Transition for Q-Band Single-Feed-Per-Beam Antenna Systems

open access: yesApplied Sciences, 2021
An in-line transition between a coaxial cable and rectangular waveguide operating in Q-band (33–50 GHz) is presented. The aim of the work is to minimize the modifications in the waveguide to the strictly necessary to overcome the manufacturing issues due
Marco Simone   +4 more
doaj   +1 more source

INVESTIGATING THE IMPACT OF MULTICOLLINEARITY ON LINEAR REGRESSION ESTIMATES [PDF]

open access: yesMalaysian Journal of Computing, 2021
The study was to investigate the impact of multicollinearity on linear regression estimates. The study was guided by the following specific objectives, (i) to examine the asymptotic properties of estimators and (ii) to compare lasso, ridge, elastic ...
Adewoye Kunle Bayo   +3 more
doaj   +1 more source

A New Ridge-Type Estimator for the Linear Regression Model: Simulations and Applications

open access: yesScientifica, 2020
The ridge regression-type (Hoerl and Kennard, 1970) and Liu-type (Liu, 1993) estimators are consistently attractive shrinkage methods to reduce the effects of multicollinearity for both linear and nonlinear regression models.
B. G. Kibria, A. Lukman, A. Lukman
semanticscholar   +1 more source

Spatio-temporal development of cuticular ridges on leaf surfaces of Hevea brasiliensis alters insect attachment [PDF]

open access: yesRoyal Society Open Science, 2020
Cuticular ridges on plant surfaces can control insect adhesion and wetting behaviour and might also offer stability to underlying cells during growth. The growth of the plant cuticle and its underlying cells possibly results in changes in the morphology ...
Venkata A. Surapaneni   +3 more
doaj   +1 more source

Deep high-temperature hydrothermal circulation in a detachment faulting system on the ultra-slow spreading ridge

open access: yesNature Communications, 2020
Coupled magmatic and tectonic activity plays an important role in high-temperature hydrothermal circulation at mid-ocean ridges. The circulation patterns for such systems have been elucidated by microearthquakes and geochemical data over a broad spectrum
C. Tao   +22 more
semanticscholar   +1 more source

Statistical synoptic analysis and comparison of Ardabil, Parsabad , Khalkhal strong winds in 1992-2012 [PDF]

open access: yesنشریه جغرافیا و برنامه‌ریزی, 2020
Strong winds are one of natural disasters that sometimes cause enormous Financial and physical damages. Since northwest of Iran and specially Ardabil Province is one of windy regions, this study tried to identify synoptic patterns which bring strong ...
Nafiseh Rahimi   +2 more
doaj  

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