Results 31 to 40 of about 4,090,602 (302)

A Technique for MIMO Antenna Design With Flexible Element Number and Pattern Diversity

open access: yesIEEE Access, 2019
This paper presents a new technique for designing multiple-input multiple-output (MIMO) antennas having pattern diversity. Massive MIMO is expected to form a part of 5G communications and will require antennas having a very large number of elements ...
Yasin Kabiri   +3 more
doaj   +1 more source

Distribution pattern and driving factors of genetic diversity of passerine birds in the Mountains of Southwest China

open access: yesAvian Research, 2022
Genetic diversity is one of the three dimensions of biodiversity and fundamental to various life forms on the Earth. Understanding the distribution pattern of genetic diversity and its driving forces has been an important topic in ecology, biogeography ...
Yongbin Chang   +7 more
doaj   +1 more source

Wideband Asymmetric Coplanar Strip Fed Antennas With Pattern Diversity for mmWave 5G Base Stations

open access: yesIEEE Access, 2020
A compact asymmetric coplanar strip (ACS)-fed mmWave 5G antenna with 6.5-7.5 dBi end-fire gain is presented in this paper. The proposed antenna is wideband, operating from 26-32 GHz with fractional bandwidth of 20.7%.
M. Idrees Magray   +4 more
doaj   +1 more source

Dietary diversity, dietary patterns and dietary intake are associated with stunted children in Jeneponto District, Indonesia

open access: yesGaceta Sanitaria, 2021
Objective: The most influence of occurrence children stunted are those related to food, both in terms of quantity and quality. The aim of this study is seeing of the relationship between dietary diversity, dietary pattern and dietary intake for children ...
Hasan Basri   +7 more
doaj   +1 more source

A Broadband Multimode Circularly Polarized Stacked Antenna With Pattern Diversity

open access: yesIEEE Access
A broadband multimode circularly polarized (CP) stacked antenna with pattern diversity is proposed in this paper. The antenna consists of three layers, two substrates with annular-ring patches and a parasitic metal patch.
Yi Liu, Yanhua Cao, Ke Wang, Wei Hong
doaj   +1 more source

Dental pattern diversity in a Saudi Arabian population: An orthopantomogram-based study

open access: yesSaudi Journal for Health Sciences, 2022
Background: Dental pattern diversity was investigated in different populations, but none have focused on Saudi Arabia. Aim: The aim of this study was to investigate the dental pattern diversity in Saudi Arabia.
Nabeel Almotairy   +4 more
doaj   +1 more source

Biological diversity of fish communities : pattern and process [PDF]

open access: yes, 2011
For over 150 years, ecologists have been striving to explain fundamental patterns of biological diversity, such as the observation that communities invariably consist of common and rare species, and to unravel the processes that underpin these patterns ...
Ahmad, A. B.   +5 more
core   +1 more source

Peninsular Diversity Patterns

open access: yesThe American Naturalist, 1981
Uploaded by Plazi for TaxoDros. We do not have abstracts.
openaire   +2 more sources

DIVERSE PBGS PATTERNS AND SUPERBRANES [PDF]

open access: yesNew Symmetries and Integrable Models, 2000
15 pages, Latex, Talk given at the XIV-th Max Born Symposium, Karpacz, Poland, September 21-25 ...
openaire   +2 more sources

Elevational Diversity Patterns of Green Lacewings (Neuroptera: Chrysopidae) Uncovered With DNA Barcoding in a Biodiversity Hotspot of Southwest China

open access: yesFrontiers in Ecology and Evolution, 2021
Elevational diversity patterns can reflect the responses of biodiversity to climate change spatially. We investigate the species diversity patterns of green lacewings (an important predatory group of insects) along the gradient of elevation from the ...
Yan Lai, Yunhui Liu, Xingyue Liu
doaj   +1 more source

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