Results 91 to 100 of about 19,704 (219)

Fractal Heterogeneous Media

, 2009
A method is proposed for generating compact fractal disordered media, by generalizing the random midpoint displacement algorithm. The obtained structures are invasive stochastic fractals, with the Hurst exponent varying as a continuous parameter, as ...
Carbone, Anna, Chiaia, Bernardino M., Turk, Christian   +2 more
core   +1 more source

Political Naturalisation: Conscripting Transit Citizens in the United Arab Emirates

Studies in Ethnicity and Nationalism, EarlyView.
ABSTRACT Since its formation, the United Arab Emirates has sought to construct a cohesive sense of national identity among its citizens, centred on a system of material and legal privileges granted exclusively to Emirati nationals. A pillar of its nation‐building project was the strict exclusion of foreigners from citizenship and the upholding of a ...
Mira Al Hussein
wiley   +1 more source

All Is Relative—A Call for Considering “Physiologically Informed” Control Conditions to Improve the Mechanistic Understanding of the Effects of Physical Exercise on Cognition

Scandinavian Journal of Psychology, EarlyView.
ABSTRACT There is a growing interest in elucidating the mechanisms that drive the benefits of physical exercise on cognitive performance. A key element for a better understanding of a particular phenomenon (e.g., the mediators of the exercise‐cognition interaction) is the selection of an appropriate control condition/group as the basis for causal ...
Fabian Herold, Benjamin Tari, Sylwester Kujach, Olivier Dupuy, C. Shawn Green, Thomas Gronwald, Matthew Heath   +6 more
wiley   +1 more source

Gradient-limited surfaces

, 2002
A simple scenario of the formation of geological landscapes is suggested and the respective lattice model is derived. Numerical analysis shows that the arising non-Gaussian surfaces are characterized by the scale-dependent Hurst exponent, which varies ...
B. B. Mandelbrot, B. B. Mandelbrot, F. Rys, J. Kalda, Jaan Kalda, P. Meakin, R. Pastor-Satorras, S. Lovejoy, S. V. Buldyrev   +8 more
core   +1 more source

Anti‐Astrotropik — Outer Space, Technology and Resistance in the Tropics

Singapore Journal of Tropical Geography, EarlyView.
This paper traces an intellectual and geographical arc of thinking about outer space in the tropics, connecting Peter Redfield's Space in the Tropics: From Convicts to Rockets in French Guiana (2000), Sean T. Mitchell's Constellations of Inequality: Space, Race, and Utopia in Brazil (2017) and Asif Siddiqi's Cosmic Fragments: Dislocation and Discontent
Rob Krawczyk
wiley   +1 more source

Volatility distribution in the S&P500 Stock Index

, 1997
We study the volatility of the S&P500 stock index from 1984 to 1996 and find that the volatility distribution can be very well described by a log-normal function.
Admati, Beran, Bollerslev, Bouchaud, Bunde, C.-K. Peng, Dacorogna, Ding, Ekman, Engle, Fama, Ghashgaie, Granger, H. Eugene Stanley, Harris, Liu, Mantegna, Mantegna, Mantegna, Martin Meyer, Peng, Pierre Cizeau, Sornette, Wood, Yanhui Liu   +24 more
core   +1 more source

Potential sliding zone recognition method for the slow-moving landslide based on the Hurst exponent

Journal of Rock Mechanics and Geotechnical Engineering
The abrupt occurrence of the Zhongbao landslide is totally unexpected, resulting in the destruction of local infrastructure and river blockage. To review the deformation history of the Zhongbao landslide and prevent the threat of secondary disasters, the
Haiqing Yang, Lili Qu, Lichuan Chen, Kanglei Song, Yong Yang, Zhenxing Liang   +5 more
doaj   +1 more source

Partial Entrance Restriction as a Potential Tidal Flood Mitigation Strategy in a Large Urban Estuary

Journal of Flood Risk Management, Volume 19, Issue 2, June 2026.
ABSTRACT Tidal flooding in estuaries is expected to worsen as sea‐level rise (SLR) continues to accelerate and increases storm surge height. Conventional structural defences are often unsustainable, while nature‐based solutions like managed realignment require extensive land to be repurposed.
Octria A. Prasojo, Martin D. Hurst, Richard D. Williams, Larissa A. Naylor, Jaime L. Toney   +4 more
wiley   +1 more source

Martingales, the efficient market hypothesis, and spurious stylized facts [PDF]

The condition for stationary increments, not scaling, detemines long time pair autocorrelations. An incorrect assumption of stationary increments generates spurious stylized facts, fat tails and a Hurst exponent Hs=1/2, when the increments are ...
Bassler, Kevin E., Gunaratne, Gemunu h., McCauley, Joseph L.   +2 more
core   +1 more source

Unraveling the Dynamics of Oxytocin in Hypothalamic Neurons

Traffic, Volume 27, Issue 2, June 2026.
Oxytocin (OT) plays an important role in regulating social behavior, and dysregulation of the oxytocinergic system leads to social impairments, such as autism spectrum disorder. Central OT release is poorly understood. Using live‐cell imaging to track vesicle trajectories, combined with machine learning‐based classification, the analysis reveals ...
Beatriz Aznar‐Escolano, Vera Egorova, José Villanueva, Luis Miguel Gutiérrez, Virginia González‐Vélez, Amparo Gil, Sandra Jurado   +6 more
wiley   +1 more source