Results 51 to 60 of about 164,698 (293)

Extraction and Spatial–Temporal Evolution of Urban Fringes: A Case Study of Changchun in Jilin Province, China

open access: yesISPRS International Journal of Geo-Information, 2018
An urban fringe area, depicted as a typical ecotone, is a region where both social and environmental problems are concentrated. Identifying and evaluating the spatial–temporal characteristics of urban fringe areas is significant for future ...
Shouzhi Chang   +4 more
doaj   +1 more source

Combinational multiple-valued circuit design by generalised disjunctive decomposition [PDF]

open access: yes, 1997
A design of multiple-valued circuits based on the multiple-valued programmable logic arrays (MV PLA’s) by generalized disjunctive decomposition is presented.
Kalganova, T
core  

Thermalization of random motion in weakly confining potentials

open access: yes, 2010
We show that in weakly confining conservative force fields, a subclass of diffusion-type (Smoluchowski) processes, admits a family of "heavy-tailed" non-Gaussian equilibrium probability density functions (pdfs), with none or a finite number of moments ...
Garbaczewski, Piotr   +1 more
core   +1 more source

Microbial Contribution to Soiling and Its Impact on Photovoltaic Module Soiling in Arid Zones of the Atacama Desert

open access: yesAdvanced Sustainable Systems, EarlyView.
Microorganisms colonizing photovoltaic surfaces in the Atacama desert form biofilms that enhance particle adhesion and reduce energy yield. This study identifies UV‐resistant bacteria and carotenoid‐producing strains that interfere with PV performance.
Douglas Olivares   +8 more
wiley   +1 more source

A first-order phase transition at the random close packing of hard spheres

open access: yes, 2016
Randomly packing spheres of equal size into a container consistently results in a static configuration with a density of ~64%. The ubiquity of random close packing (RCP) rather than the optimal crystalline array at 74% begs the question of the physical ...
Alder   +50 more
core   +1 more source

Modelling spatial–temporal expansion of Lilongwe City using Shannon’s entropy model through semi-dynamic environmental mapping and analysis

open access: yesModeling Earth Systems and Environment, 2023
AbstractThis study involves analysis of the urban spatial–temporal expansion of Lilongwe City from 1973 to 2020 using Shannon’s entropy model through time-series satellite mapping. Landsat images from 1973 to 2020 in a nearly 10-year interval are used to determine spatial–temporal land use/cover changes. The city is zoned into 1 km concentric rings and
Chifuniro Ngalande, Patroba Achola Odera
openaire   +1 more source

Divergent Responses of Bacterial Communities to Permafrost Degradation and Their Associations With Carbon Across Vertical Profiles

open access: yesAdvanced Science, EarlyView.
Bacterial α‐diversity decreases, but stochasticity and community stability increase across the 15 m‐depth vertical profiles and along the degraded gradient within the active layer. The abundance and interaction of core taxa mainly control community stability in the active and permafrost layers, respectively.
Shengyun Chen   +13 more
wiley   +1 more source

Análisis y proyección de las coberturas vegetales mediante el uso de sensores remotos y Sistemas de Información Geográfica en la localidad de Suba, Bogotá-Colombia

open access: yesGestión y Ambiente, 2018
La expansión urbana genera impactos ambientales que degradan los ecosistemas naturales, cambiando su estructura y función. En este trabajo se desarrollaron lineamientos metodológicos mediante el uso de herramientas geográficas y teledetección para la ...
Jerson Andrés Achicanoy   +2 more
doaj   +1 more source

Survival Rates and Capture Heterogeneity of Bottlenose Dolphins (Tursiops truncatus) in the Shannon Estuary, Ireland

open access: yesFrontiers in Marine Science, 2021
Adult survival is arguably the most important demographic parameter for long-lived species as it has a large impact on population growth, and it can be estimated for cetacean populations using natural markings and mark-recapture (MR) modelling.
Kim E. Ludwig   +4 more
doaj   +1 more source

Properties of Classical and Quantum Jensen-Shannon Divergence

open access: yes, 2009
Jensen-Shannon divergence (JD) is a symmetrized and smoothed version of the most important divergence measure of information theory, Kullback divergence.
A. F. T. Martins   +20 more
core   +1 more source

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