نتایج جستجو برای: patch density pd
تعداد نتایج: 505774 فیلتر نتایج به سال:
Rapid testing of electrocatalysts and corrosion resistant alloys accelerates discovery of promising new materials. Imaging amperometry, based on the deployment of colloidal particles as probes of the local current density, allows simultaneous electrochemical characterization of the entire composition space represented in a thin-film alloy "library" electrode. Previous work has shown that nanome...
Individuals foraging in groups can use two different tactics for obtaining food resources. Individuals can either search for food sources themselves (producing) or they can join food discoveries of others (scrounging). In this study we use a genetic algorithm in a spatially explicit producer-scrounger game to explore how individuals compromise between exploration (an important axis of animal pe...
The forest landscape pattern evolution can reveal the intensity and mode of action human–land relationships at different times in spaces, providing scientific support for regional ecological security, human settlement health, sustainable development. In this study, we proposed a novel method analyzing dynamics patterns. First, patch density (PD), largest index (LPI), shape (LSI), contiguity (CI...
An in-depth exploration of the dynamics and existing problems in farmland morphology is crucial to formulate targeted protection policies. In this study, we constructed a morphological evaluation index system identify characteristics use transition Sihong County Huang-Huai-Hai Plain, China. The dominant terms area landscape pattern recessive focusing on function were considered work. Based info...
Responses of benthic macrofauna and epibenthic predators / sediment disturbers to controlled 22 2 density (0, 12, 120, 600 and 1200 individuals m ) and patch size (0.25, 1.0 and 9.0 m ) manipulations of the venerid bivalve Austrovenus stutchburyi (Gray) were examined on an 22 intertidal sandflat. Bivalve density manipulations greater than 600 m had a mixed influence on macrofauna colonisation; ...
the functional response of a predator is the base of prey-predator dynamics. functional response of serangium montazerii fã¼rsch at different egg densities (50, 100, 150, 200 and 250) of dialeurodes citri (ashmead) was studied in an open-patch experiment, in a growth chamber (25 â± 1â°c, 65 â± 5% rh and a photoperiod of 16: 8 l: d h) on âthompsonâ navel orange (citrus sinensis cv. thompson)...
The properties of the Koch island fractal boundary microstrip patch antenna are presented. The behavior at the fundamental mode and the existence of high-order modes that exhibit localized current density distributions is discussed. The main features are the size reduction of the patch resonating at the fundamental frequency when compared to Euclidean-shaped patches, and the application of loca...
A new class of techniques is explored for controlling MUSIC N or Max/MSP/pd instruments directly from the sound of a monophonic instrument (or separately acquired inputs from a polyphonic instrument). The instantaneous phase and magnitude of the input signal are used in place of phasors and envelope generators. Several such instruments are described; this technique is used in SMECK, the author’...
BACKGROUND Conventional spin-echo (PD-CSE) and fast spin-echo (PD-FSE) techniques are frequently used to detect meniscal tears. However, the time delay for imaging with PD-CSE has resulted in its replacement with faster techniques, such as proton density fast spin-echo (PD-FSE), which has become a frequent tool at most diagnostic centres.Qualitative analysis shows that the PD-CSE technique is m...
The Tingjiang Watershed is a typical mountainous area with red soil in the south of China. Due to high rainfall intensity, significant cultivated land expansion, and accelerated urbanization, ecological problems such as erosion are prominent study area. Based on use, precipitation, digital elevation model (DEM), normalized difference vegetation Index (NDVI), types 2000, 2010, 2020, landscape pa...
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