Results 101 to 110 of about 19,709 (186)

Mechanisms of Projected Changes in Thunderstorm Downburst Environments Across the United States

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Responses of downdraft convective available potential energy (DCAPE) to global warming were investigated using the Community Earth System Model (CESM2) under a high‐emission scenario through the year 2100. DCAPE is projected to increase by 5%–12% on average in most areas, independently of wind shear.
Ian N. Williams, Gwendolyn N. Fieweger
wiley   +1 more source

Detecting long-memory: Monte Carlo simulations and application to daily streamflow processes [PDF]

Hydrology and Earth System Sciences, 2007
The Lo's modified rescaled adjusted range test (R/S test) (Lo, 1991), GPH test (Geweke and Porter-Hudak, 1983) and two approximate maximum likelihood estimation methods, i.e., Whittle's estimator (W-MLE) and another one implemented in S-Plus (S-
W. Wang, W. Wang, P. H. A. J. M. Van Gelder, J. K. Vrijling, X. Chen   +4 more
doaj  

Filtered Log-periodogram Regression of long memory processes [PDF]

Filtered log-periodogram regression estimation of the fractional differencing parameter d is considered. Asymptotic properties are derived and the effect of filtering on ˆ d is investigated. It is shown that the estimator by Geweke and Porter-Hudak (1983)
Jan Beran, Yuanhua Feng
core  

Differentiated adaptative genetic architecture and language-related demographical history in South China inferred from 619 genomes from 56 populations

BMC Biology
Background The underrepresentation of human genomic resources from Southern Chinese populations limited their health equality in the precision medicine era and complete understanding of their genetic formation, admixture, and adaptive features.
Qiuxia Sun, Mengge Wang, Tao Lu, Shuhan Duan, Yan Liu, Jing Chen, Zhiyong Wang, Yuntao Sun, Xiangping Li, Shaomei Wang, Liuyi Lu, Liping Hu, Libing Yun, Junbao Yang, Jiangwei Yan, Shengjie Nie, Yanfeng Zhu, Gang Chen, Chuan-Chao Wang, Chao Liu, Guanglin He, Renkuan Tang   +21 more
doaj   +1 more source

The Influence of Rational Dimension in the GPH-MILF Peace Process [PDF]

The Journal of Social Sciences Research, 2018
Resolution of the so-called “Bangsamoro Question” rests at the heart of the peace process between the Government of the Philippines (GPH) and the Moro Islamic Liberation Front (MILF) in the Southern Philippines, also known as the Bangsamoro homeland. Inspired by Allison and Zelikow’s conceptualization of Rational Actor Model (RAM), this paper analyzed ...
openaire   +1 more source

TESTING THE LONG RANGE-DEPENDENCE FOR THE CENTRAL EASTERN EUROPEAN AND THE BALKANS STOCK MARKETS [PDF]

Annals of the University of Oradea: Economic Science, 2013
In this study we tested the existence of long memory in the the return series for major Central Eastern European and Balkans stock markets, using the following statistical methods: Hurst Exponent, GPH method, Andrews and Guggenberger method, Reisen ...
Pece Andreea Maria, Ludusan (Corovei) Emilia Anuta, Mutu Simona,   +3 more
doaj  

Subdifferential Properties of Minimal Time Functions Associated with Set-Valued Mappings with Closed Convex Graphs in Hausdorff Topological Vector Spaces

Journal of Function Spaces and Applications, 2013
For a set-valued mapping M defined between two Hausdorff topological vector spaces E and F and with closed convex graph and for a given point (x,y)∈E×F, we study the minimal time function associated with the images of M and a bounded set Ω⊂F defined by ...
Messaoud Bounkhel
doaj   +1 more source

Distinguishing between long-range dependence and deterministic trends [PDF]

We provide a method for distinguishing long-range dependence from deterministic trends such as structural breaks. The method is based on the comparison of standard log-periodogram regression estimation of the memory parameter with its tapered counterpart.
Sibbertsen, Philipp, Venetis, Ioannis
core  

GPHS (General Purpose Heat Source) uranium oxide encapsulations supporting satellite safety tests [PDF]

, 1989
General Purpose Heat Source (GPHS) simulant-fueled capsules were assembled, welded, nondestructively examined, and shipped to Los Alamos National Laboratory (LANL) for satellite safety tests. Simulant-fueled iridium capsules contain depleted uranium oxide pellets that serve as a stand-in for plutonium-238 oxide pellets.
openaire   +2 more sources

Improved Efficiency in Generalized Poisson Hurdle Model Estimation Using Restricted and Shrinkage Methods

Journal of Mathematics
This paper investigates the use of shrinkage estimators in the generalized Poisson hurdle (GPH) model for count data analysis. The GPH model effectively handles data with both excess zeros and over- or underdispersion.
Hayder Hasan Rahmah Al-Gharrawi, Hossein Bevrani, Basim Shlaibah Msallam   +2 more
doaj   +1 more source