Results 51 to 60 of about 932,921 (348)

Latitudinal trends in human primary activities: characterizing the winter day as a synchronizer [PDF]

open access: yes, 2017
This work analyzes time use surveys from 19 countries (17 European and 2 American) in the middle latitude range from 38{\deg} to 61{\deg} latitude accounting for 45% of world population in that range.
Martin-Olalla, Jose Maria
core   +3 more sources

Latitude migration of solar activity at high latitudes

open access: yesChinese Science Bulletin, 2008
Utilized here is the Carte Synoptique solar filament archive, namely the catalogue of solar filaments from March 1919 to December 1989, corresponding to solar rotation numbers 876 to 1823 to study latitudinal migration of solar activity at high latitudes.
QiXiu Li, PengXin Gao, Ke-Jun Li
openaire   +2 more sources

Latitudinal gradient in Gnomeskelus species richness [PDF]

open access: yesArthropods, 2020
The Tropical Conservativism Hypothesis suggests processes of speciation, extinction and dispersal resulted in higher species richness at the tropics and declined away from the equator. Biogeographical Conservativism Hypothesis suggests that the processes
Mark Cooper
doaj  

Diversity Patterns of Bermuda Grass along Latitudinal Gradients at Different Temperatures in Southeastern China

open access: yesPlants, 2020
Cynodon dactylon (L.) Pers. (common Bermuda grass) has a limited capacity to grow at low temperatures, which limits its geographical range. Exploring its evolutionary relationship across different environmental gradients is necessary to understand the ...
Jing-Xue Zhang   +8 more
doaj   +1 more source

Shedding light on trophic interactions: A field experiment on the effect of human population between latitudes on herbivory and predation patterns

open access: yesEcology and Evolution, 2023
Interactions between species within an ecosystem (e.g. predation and herbivory) play a vital role in sustaining the ecosystem functionality, which includes aspects like pest control and nutrient cycling.
Inés María Alonso‐Crespo   +1 more
doaj   +1 more source

Study of Fish Weight Loss in Solar Dryer Across Different Agro-Ecological Zones of Nigeria [PDF]

open access: yes, 2009
Drying sessions were conducted across Nigeria to study the interaction between fish weight loss and the meteorological parameters. Correlation analyses using weight loss values show that latitude is strongly related (r =+0.96) to weight loss of fish ...
Adenike Ibitoye   +2 more
core   +2 more sources

LATITUDE WITHOUT AN INSTRUMENT [PDF]

open access: yesSchool Science and Mathematics, 1914
n ...
openaire   +3 more sources

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

open access: yesPopulation Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Performance Triggered Adaptive Model Reduction for Soil Moisture Estimation in Precision Irrigation

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
ABSTRACT Accurate soil moisture information is essential for precise irrigation to enhance water use efficiency. Estimating soil moisture based on limited soil moisture sensors is especially critical for obtaining comprehensive soil moisture information when dealing with large‐scale agricultural fields.
Sarupa Debnath   +4 more
wiley   +1 more source

Design and implementation of a customable automatic vehicle location system in ambulances and emergency vehicle systems

open access: yesJournal of Medical Signals and Sensors, 2019
Background: Automatic vehicle location (AVL) refers to a system that calculates the geographical location of any vehicle, i.e., latitude and longitude.
Alireza Shirani, Mohammadreza Sehhati
doaj   +1 more source

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