Results 1 to 10 of about 4,092,369 (293)

The IH-complex of Spatial Trivalent Graphs

Tokyo Journal of Mathematics, 2010
The authors define the IH-complex on the set of spatial trivalent graphs as follows: The vertices of the complex are isotopy classes of spatial trivalent graphs, and two vertices are connected by an edge if one graph can be obtained from another by an IH-move.
ISHII, Atsushi, KISHIMOTO, Kengo
openaire   +3 more sources

Modelling H5N1 in Bangladesh across spatial scales: Model complexity and zoonotic transmission risk

Epidemics, 2017
Highly pathogenic avian influenza H5N1 remains a persistent public health threat, capable of causing infection in humans with a high mortality rate while simultaneously negatively impacting the livestock industry.
Edward M. Hill, Thomas House, Madhur S. Dhingra, Wantanee Kalpravidh, Subhash Morzaria, Muzaffar G. Osmani, Mat Yamage, Xiangming Xiao, Marius Gilbert, Michael J. Tildesley   +9 more
doaj   +1 more source

Low-Complexity Detection Algorithms for Spatial Modulation MIMO Systems

Journal of Electrical and Computer Engineering, 2018
In this paper, the authors propose three low-complexity detection schemes for spatial modulation (SM) systems based on the modified beam search (MBS) detection.
Xinhe Zhang, Yuehua Zhang, Chang Liu, Hanzhong Jia   +3 more
doaj   +1 more source

GEO-MATHEMATICAL MODELLING OF SPATIAL-ECOLOGICAL COMPLEX SYSTEMS: AN EVALUATION

Geography, Environment, Sustainability, 2010
Assessing the complexity of landscapes is one of the top research priorities for Physical Geography and Ecology. This paper aims at a methodological evaluation of the discrete and analytical mathematical models hitherto available for quantitative ...
Fivos Papadimitriou
doaj   +1 more source

Quantifying the Complexity of Rough Surfaces Using Multiscale Entropy: The Critical Role of Binning in Controlling Amplitude Effects

Mathematics
A salient feature of modern material surfaces used in cutting-edge technologies is their structural and spatial complexity, which endows them with novel properties and multifunctionality.
Alex Kondi, Vassilios Constantoudis, Panagiotis Sarkiris, Evangelos Gogolides   +3 more
doaj   +1 more source

Generalized Complex Quadrature Spatial Modulation [PDF]

Wireless Communications and Mobile Computing, 2019
Spatial modulation (SM) is a multiple-input multiple-output (MIMO) system that achieves a MIMO high spectral efficiency while maintaining the transmitter computational complexity and requirements as low as those of the single-input systems. The complex quadrature spatial modulation (CQSM) builds on the QSM scheme and improves the spectral efficiency by
openaire   +1 more source

On a Spatial Generalization of the Complex $\Pi$-Operator

Zeitschrift für Analysis und ihre Anwendungen, 1996
The \Pi -operator plays a mayor role in complex analysis, especially in the theory of generalized analytic functions in the sense of Vekua. The present paper deals with a hyper-complex generalization of the complex
Gürlebeck, K., Kähler, U.
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Spatial complexity method for tracking brain development and degeneration using functional near-infrared spectroscopy. [PDF]

Biomed Opt Express, 2022
Liang Z, Wang Y, Tian H, Gu Y, Arimitsu T, Takahashi T, Minagawa Y, Niu H, Tong Y.   +8 more
europepmc   +1 more source

Geospatial environmental complexity, spatial brain volume, and spatial behavior across the Alzheimer's disease spectrum

Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring
INTRODUCTION Understanding impact of environmental properties on Alzheimer's disease (AD) is paramount. Spatial complexity of one's routinely navigated environment is an important but understudied factor. METHODS A total of 660 older adults from National
Naewoo Shin, Karen M. Rodrigue, May Yuan, Kristen M. Kennedy   +3 more
doaj   +1 more source

Analyzing and Discovering Spatial Algorithm Complexity Vulnerabilities in Recursion

Applied Sciences
The algorithmic complexity vulnerability (ACV) that may lead to denial of service attacks greatly disrupts the security and availability of applications, and due to the widespread use of third-party libraries, its impact may be amplified through the ...
Ziqi Wang, Debao Bu, Weihan Tian, Baojiang Cui   +3 more
doaj   +1 more source