Results 41 to 50 of about 159,341 (296)

The Application of Directional Univariate Structure Functions Analysis for Studying the Spatial Anisotropy of Environmental Variables

open access: yesEkológia (Bratislava), 2019
As anisotropy is a fundamental property of the real-world environmental spatial variables, the conventional omnidirectional variograms and correlograms do not provide means enough to characterise spatial dependence between observations.
Svidzinska Daria
doaj   +1 more source

Noise‐Tunable Memristor Enabling Programmable Probabilistic Neurons for Frequency‐Selective Time‐Series Signal Encoding

open access: yesAdvanced Materials, EarlyView.
Memristors offer tunable resistance and intrinsic instability, making them promising tunable noise sources. We propose a spiking‐rate‐programmable probabilistic neuron using a Ru/TaOx/Pt memristor, where resistance‐dependent noise enables frequency‐selective encoding.
Do Hoon Kim   +8 more
wiley   +1 more source

Analysis of City Demographics Using Spatial Data Mining

open access: yesProceedings of the International Conference of Contemporary Affairs in Architecture and Urbanism-ICCAUA, 2018
The main purpose of data mining in private and public sector institutions is to process and analyse data with the aim of generating reliable information for decision-making.
Krystyna Kurowska   +2 more
doaj  

Meta-rules for Networks (Invited Paper) [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2020
This article proposes conceptual approaches for both the design and implementation of network linkages, that dependent on context, should respect interlinking topological and parametric constraints, possess formal properties, be compatible with ...
Gianfranco Minati
doaj  

On Correlation Polynomials and Subword Complexity [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2007
We consider words with letters from a $q-ary$ alphabet $\mathcal{A}$. The kth subword complexity of a word $w ∈\mathcal{A}^*$ is the number of distinct subwords of length $k$ that appear as contiguous subwords of $w$.
Irina Gheorghiciuc, Mark Daniel Ward
doaj   +1 more source

Moiré‐Induced Symmetry Breaking of Charge Order in van der Waals Heterostructures

open access: yesAdvanced Materials, EarlyView.
A uniaxial moiré potential in misfit (MS)1+δTaS2 heterostructures selectively reshape charge order: the embedded 1H‐TaS2 layer hosts an incommensurate charge‐density wave, fragmented into nanometer domains and stripped of threefold symmetry. Superconductivity, however, remains uniform and fully gapped, revealing heterosymmetry stacking as a selective ...
Sandra Sajan   +12 more
wiley   +1 more source

An Improved Map-Matching Technique Based on the Fréchet Distance Approach for Pedestrian Navigation Services

open access: yesSensors, 2016
Wearable and smartphone technology innovations have propelled the growth of Pedestrian Navigation Services (PNS). PNS need a map-matching process to project a user’s locations onto maps.
Yoonsik Bang, Jiyoung Kim, Kiyun Yu
doaj   +1 more source

Weighted Machine Learning for Spatial-Temporal Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Applying machine learning techniques to spatial-temporal data poses the question that how the recorded location and time for training samples should contribute to the training and testing process. The prior knowledge of how spatial-temporal phenomena are
Mahdi Hashemi, Hassan A. Karimi
doaj   +1 more source

The spatial analysis of green economy indicators of OECD countries

open access: yesFrontiers in Environmental Science, 2023
The present study aims to examine the effect of the geographical location relationship between economic growth and environmental pollution. For this purpose, the spatial relationship between the variable CO2 emission and the variables energy consumption (
Ayşe Çay Atalay, Yusuf Akan
doaj   +1 more source

Design and fabrication of highly efficient non-linear optical devices for implementing high-speed optical processing [PDF]

open access: yes, 2002
We present the design and fabrication of micro-cavity semiconductor devices for enhanced Two-Photon-Absorption response, and demonstrate the use of these devices for implementing sensitive autocorrelation measurements on pico-second optical ...
Folliot, H.   +7 more
core   +1 more source

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