scholarly journals Establishing the Downscaling and Spatiotemporal Scale Conversion Models of NDVI Based on Fractal Methodology

2020 ◽  
Author(s):  
Haijun Luan
Keyword(s):  
Spatiotemporal Scale

SSAS: Spatiotemporal Scale Adaptive Selection for Improving Bias Correction on Precipitation

2021 ◽  
pp. 1-14
Author(s):  
Yiqun Liu ◽  
Junping Zhang ◽  
Lei Chen ◽  
Hai Chu ◽  
James Z. Wang ◽  
...  
Keyword(s):  
Bias Correction ◽  
Adaptive Selection ◽  
Spatiotemporal Scale ◽  
Selection For

scholarly journals Avifaunal records from Chalis Ek, North Andaman Island: insights into distribution of some Andaman Island birds

Check List ◽  
2013 ◽  
Vol 9 (1) ◽  
pp. 34 ◽  
Author(s):  
Pankaj Koparde ◽  
Manchi Shirish S.
Keyword(s):  
Southeast Asia ◽  
Anthropogenic Disturbance ◽  
New Records ◽  
Single Species ◽  
Iucn Red List ◽  
Red List ◽  
Andaman Island ◽  
Spatiotemporal Scale ◽  
Near Threatened

Species records are important for assessing the distribution and status of species over a spatiotemporal scale. Andaman archipelago, off Southeast Asia, is a high avian endemism area, covering an area of >5000 km2. We conducted this survey in 2011 to make an inventory of avifauna of Chalis Ek area. A total of 73 species, belonging to 61 genera and 34 families were recorded, of which 60 were resident, 11 were winter migrants, one vagrant, and a single species introduced from mainland India. Three species were found to be new records, expanding distribution. Thirteen were endemic to the Andaman and Nicobar group of islands and eleven were listed as near threatened in the IUCN Red List. This study shows that sites such as Chalis Ek, even though subject to moderate anthropogenic disturbance, still hosts a large and distinctive avifauna and should be protected.

scholarly journals Spontaneous dynamics of neural networks in deep layers of prefrontal cortex

2017 ◽  
Vol 117 (4) ◽  
pp. 1581-1594 ◽  
Author(s):  
Andrew S. Blaeser ◽  
Barry W. Connors ◽  
Arto V. Nurmikko
Keyword(s):  
Prefrontal Cortex ◽  
Spontaneous Activity ◽  
Calcium Imaging ◽  
Cortical Neurons ◽  
Rhythmic Activity ◽  
Network Activity ◽  
Local Networks ◽  
Spatiotemporal Scale ◽  
Deep Layers ◽  
Delta Oscillations

Cortical systems maintain and process information through the sustained activation of recurrent local networks of neurons. Layer 5 is known to have a major role in generating the recurrent activation associated with these functions, but relatively little is known about its intrinsic dynamics at the mesoscopic level of large numbers of neighboring neurons. Using calcium imaging, we measured the spontaneous activity of networks of deep-layer medial prefrontal cortical neurons in an acute slice model. Inferring the simultaneous activity of tens of neighboring neurons, we found that while the majority showed only sporadic activity, a subset of neurons engaged in sustained delta frequency rhythmic activity. Spontaneous activity under baseline conditions was weakly correlated between pairs of neurons, and rhythmic neurons showed little coherence in their oscillations. However, we consistently observed brief bouts of highly synchronous activity that must be attributed to network activity. NMDA-mediated stimulation enhanced rhythmicity, synchrony, and correlation within these local networks. These results characterize spontaneous prefrontal activity at a previously unexplored spatiotemporal scale and suggest that medial prefrontal cortex can act as an intrinsic generator of delta oscillations. NEW & NOTEWORTHY Using calcium imaging and a novel analytic framework, we characterized the spontaneous and NMDA-evoked activity of layer 5 prefrontal cortex at a largely unexplored spatiotemporal scale. Our results suggest that the mPFC microcircuitry is capable of intrinsically generating delta oscillations and sustaining synchronized network activity that is potentially relevant for understanding its contribution to cognitive processes.

Effects of Spatiotemporal Scale on Autocorrelation and Home Range Estimators

1997 ◽  
Vol 61 (2) ◽  
pp. 280 ◽  
Author(s):  
Thomas L. Hansteen ◽  
Harry P. Andreassen ◽  
Rolf A. Ims
Keyword(s):  
Home Range ◽  
Spatiotemporal Scale

scholarly journals The Effects of Evolution and Spatial Structure on Diversity in Biological Reserves

2016 ◽  
Author(s):  
Emily Louise Dolson ◽  
Michael J Wiser ◽  
Charles A Ofria
Keyword(s):  
Spatial Structure ◽  
Evolutionary Dynamics ◽  
Phenotypic Diversity ◽  
Population Diversity ◽  
Large Region ◽  
Digital Evolution ◽  
Policy Decisions ◽  
Spatiotemporal Scale ◽  
Research Platform

Conservation ecologists have long argued over the best way of placing reserves across an environment to maximize population diversity. Many have studied the effect of protecting many small regions of an ecosystem vs. a single large region, with varied results. However, this research tends to ignore evolutionary dynamics under the rationale that the spatiotemporal scale required is prohibitive. We used the Avida digital evolution research platform to overcome this barrier and study the response of phenotypic diversity to eight different reserve placement configurations. The capacity for mutation,and therefore evolution, substantially altered the dynamics of diversity in the population. When mutations were allowed, reserve configurations involving a greater number of consequently smaller reserves were substantially more effective at maintaining existing diversity and generating new diversity. However, when mutations were disallowed, reserve configuration had little effect on diversity generation and maintenance. While further research is necessary before translating these results into policy decisions, this study demonstrates the importance of considering evolution when making such decisions and suggests that a larger number of smaller reserves may have evolutionary benefits.

Parrotfish movement patterns vary with spatiotemporal scale

2017 ◽  
Vol 577 ◽  
pp. 149-164 ◽  
Author(s):  
K Davis ◽  
PM Carlson ◽  
CG Lowe ◽  
RR Warner ◽  
JE Caselle
Keyword(s):  
Movement Patterns ◽  
Spatiotemporal Scale

Mesoscale Modeling for Mountain Weather Forecasting Over the Himalayas

2003 ◽  
Vol 84 (9) ◽  
pp. 1237-1244 ◽  
Author(s):  
Someshwar Das ◽  
S. V. Singh ◽  
E. N. Rajagopal ◽  
Robert Gall
Keyword(s):  
Weather Forecasting ◽  
Severe Weather ◽  
Grid Resolution ◽  
Mesoscale Modeling ◽  
Disaster Mitigation ◽  
Mountainous Region ◽  
Fine Grid ◽  
Spatiotemporal Scale ◽  
Mountain Weather

Severe weather has a more calamitous effect in the mountainous region because the terrain is complex and the economy is poorly developed and fragile. Such weather systems occurring on a small spatiotemporal scale invite application of models with fine-grid resolution and observations from radars and satellites besides the conventional observations for forecasting and disaster mitigation.

scholarly journals Correction: Measuring multi-spatiotemporal scale tourist destination popularity based on text granular computing

PLoS ONE ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. e0233068
Author(s):  
Chi Yunxian ◽  
Li Renjie ◽  
Zhao Shuliang ◽  
Guo Fenghua
Keyword(s):  
Granular Computing ◽  
Tourist Destination ◽  
Spatiotemporal Scale
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