Heavy-tailed distributions of confirmed COVID-19 cases and deaths in spatiotemporal space

P Liu, Y Zheng - PLoS One, 2023 - journals.plos.org
This paper conducts a systematic statistical analysis of the characteristics of the
geographical empirical distributions for the numbers of both cumulative and daily confirmed …

[HTML][HTML] Stochastic Gradient Descent optimization to estimate the power-law fractal index in fracture networks

G Racolte, A Marques Jr, E Menezes, L Scalco… - Computers & …, 2024 - Elsevier
Fractures greatly impact hydrocarbon exploration as they modify fluid flow properties within
reservoir rocks, creating an interconnected network. The hydrocarbon reservoirs are often …

Power law in COVID-19 cases in China

BB Ahundjanov, SB Akhundjanov… - Journal of the Royal …, 2022 - academic.oup.com
Abstract The novel coronavirus (COVID-19) was first identified in China in December 2019.
Within a short period of time, the infectious disease has spread far and wide. This study …

Size distribution of national CO2 emissions

SB Akhundjanov, S Devadoss, J Luckstead - Energy Economics, 2017 - Elsevier
We examine the size distribution of national carbon dioxide (CO 2) emissions on a sample of
210 countries and territories for the period 2000–2010. We employ lognormal, double …

Gibrat's law for CO2 emissions

BB Ahundjanov, SB Akhundjanov - Physica A: Statistical Mechanics and its …, 2019 - Elsevier
In this study, we analyze the statistical properties of the growth process of national CO 2
emissions for over 200 countries and territories for the period 1995–2010. The results from …

Fractal modeling of oil and gas geochemical data in the Taiwan Strait Basin

Y Zhang, L Zhang, F Xiao, J Zhao, Z Lei… - Journal of Geochemical …, 2024 - Elsevier
This study investigated the fractal characteristics of oil and gas indicators in the Taiwan Strait
Basin using multifractal methods. The results revealed that these indicators can be …

The power-law distribution of agricultural land size

SB Akhundjanov, L Chamberlain - Journal of Applied Statistics, 2019 - Taylor & Francis
Power-law distributions explain a variety of natural and man-made processes spanning
various disciplines including economics and finance. This paper demonstrates that the …

Distribution patterns of petroleum indices based on multifractal and spatial PCA

L Lei, S Xie, Z Chen, EJM Carranza, Z Bao… - Journal of Petroleum …, 2018 - Elsevier
Currently, the challenges of oil/gas target prospecting by surface soil geochemical
exploration are the covers of the prospecting regions. And the arid, sandy, undeveloped …

Multifractal properties of oil and gas indices in the Songnan Low Uplift of the Qiongdongnan Basin deepwater area

Y Zhang, L Zhang, J Zhou, J Zhu, L Tang… - Geochemistry …, 2022 - lyellcollection.org
Recently, a high-quality reservoir was discovered in the Songnan Low Uplift in the eastern
deepwater area of the Qiongdongnan Basin, northern South China Sea. To establish …

Distribution law of the COVID-19 number through different temporal stages and geographic scales

P Liu, Y Zheng - arXiv preprint arXiv:2208.06435, 2022 - arxiv.org
This work conducts a systematical analysis on the distribution characteristics of the COVID-
19 numbers for both cumulative and daily confirmed cases and deaths in county, city, and …