Results 11 to 20 of about 2,034,129 (243)

Effects of Plateau Pika Disturbance on the Spatial Heterogeneity of Vegetation in Alpine Meadows

open access: yesFrontiers in Plant Science, 2021
Herbivory is one of the important factors that influence spatial heterogeneity of vegetation in grasslands. In this study, we focused on plateau pika (Ochotona curzoniae) to investigate the effects of the presence of small semi-fossorial herbivores and ...
Jie Li   +3 more
doaj   +1 more source

Spatial Quantitative Model of Human Activity Disturbance Intensity and Land Use Intensity Based on GF-6 Image, Empirical Study in Southwest Mountainous County, China

open access: yesRemote Sensing, 2022
Vigorous human activities have strengthened the development and utilization of land, causing huge damage to the earth’s surface, while mining the disturbance pattern of human activities can capture the influence process and spatial interaction between ...
Xuedong Zhang   +4 more
doaj   +1 more source

Low- to Moderate-Level Forest Disturbance Effects on Plant Functional Traits and Associated Soil Microbial Diversity in Western Himalaya

open access: yesFrontiers in Forests and Global Change, 2021
This study quantifies the effect of low- to moderate-intensity anthropogenic activities and natural activities affecting less than 40% of the canopy cover on major plant functional traits and associated soil microbial diversity in western Himalayan ...
Shipra Singh
doaj   +1 more source

Multi-cyclone analysis and machine learning model implications of cyclone effects on forests

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2021
Past studies of cyclones (hurricanes, typhoons, tropical cyclones) disturbance showed that meteorological, topographical, and biological factors affect the patterns of forest disturbance intensity but left open the extent to which these findings were ...
Yanlei Feng   +2 more
doaj   +1 more source

Effect of ground slope on extent and intensity of soil disturbance from skidder logging (Case study: Nav-e Asalem forest, Gilan province) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2017
Protection of forest soil is one of key factors in having sustainable productive forests. In this research extent and intensity of soil disturbance due to extraction of logs of felled trees (20.5 m3/ha) were studied in Nav-e Asalem forest in Gilan ...
Farzam Tavankar, Mehrdad Nikooy
doaj   +1 more source

The impact of pain intensity on quality of life of postherpetic neuralgia patients [PDF]

open access: yesMedicinski Glasnik, 2020
Aim To investigate the impact of pain intensity of postherpetic neuralgia (PHN) patients. Methods This cross sectional study included 30 PHN patients attended to the Dermatology and Venereology Department of the School of Medicine of Universitas ...
Wizar Putri Mellaratna   +2 more
doaj   +1 more source

Disturbance-free single-pixel imaging camera based on P=0.5 Bernoulli modulation and complementary detection

open access: yes, 2022
We present a technique called single-pixel imaging camera based on complementary detection and optimized Bernoulli modulation (CSPI camera), which can significantly reduce the influence of the disturbance light to single-pixel imaging (SPI).
Wenlin Gong (1634953)
core   +1 more source

Intensification of disturbance destabilizes productivity through effects on dominant species

open access: yesEcological Indicators, 2022
Disturbances, including anthropogenic disturbances, are integral to the maintenance of grassland ecosystems. Most research on anthropogenic disturbances focuses on the effects of intensification, yet cessation of disturbance can have equally important ...
Feng Zhang   +4 more
doaj   +1 more source

Analysis of Cyperus esculentus–Soil Dynamic Behavior during Rotary Tillage Based on Discrete Element Method

open access: yesAgriculture, 2023
Considering the problems of low soil fragmentation rates, high working resistance, and high energy consumption in the harvesting process of Cyperus esculentus in China, a method of Cyperus esculentus harvesting based on counter-rotation digging is ...
Zhuang Zhao   +9 more
doaj   +1 more source

A nonlinear disturbance observer for robotic manipulators [PDF]

open access: yes, 2000
A new nonlinear disturbance observer (NDO) for robotic manipulators is derived in this paper. The global exponential stability of the proposed disturbance observer (DO) is guaranteed by selecting design parameters, which depend on the maximum velocity ...
Chen, W.H.   +2 more
core   +6 more sources

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