Results 41 to 50 of about 5,064,878 (211)

Weighted Sum of Correlated Lognormals: Convolution Integral Solution [PDF]

, 2011
Probability density function (pdf) for sum of n correlated lognormal variables is deducted as a special convolution integral. Pdf for weighted sums (where weights can be any real numbers) is also presented.
Nagy, Tamás
core   +1 more source

Establishing resilience-targeted prediction models of rainfall for transportation infrastructures for three demonstration regions in China

Scientific Reports
Rainstorm is one of the global meteorological disasters that threaten the safety of transportation infrastructure and the connectivity of transportation system.
Wen Zeng, Xiaodan Sun, Hongping Xing, Yu Liu, Lu Liu   +4 more
doaj   +1 more source

Disaggregable Outage-Aware SNR Modeling Under PDL Uncertainty for Optical Network Digital Twins

IEEE Open Journal of the Communications Society
Polarization-dependent loss (PDL) makes the post-equalization signal-to-noise ratio (SNR) of a coherent optical lightpath stochastic, with an outage-relevant lower tail that depends on the longitudinal interleaving of PDL elements and amplified ...
Enrico Miotto, Giorgio Taricco, Hideki Nishizawa, Andrea D'Amico, Vittorio Curri   +4 more
doaj   +1 more source

SubDIVIDE: Efficient tensor‐valued diffusion magnetic resonance imaging via joint diffusional variance decomposition modeling and subspace reconstruction

Journal of Intelligent Medicine, EarlyView.
SubDIVIDE integrates a physics‐consistent DIVIDE subspace directly into MRI reconstruction. By embedding a low‐rank basis derived from a large DIVIDE signal dictionary into a joint ADMM optimization—together with composite sensitivity maps that absorb inter‐b‐value phase errors—the framework recovers quantitative microstructural maps from highly ...
Cheng Yang, Jingguo Yan, Zihan Zhou, Zhong Xue, Qiuyun Fan   +4 more
wiley   +1 more source

Key features of observational research data preparation for evidence synthesis

Реальная клиническая практика: данные и доказательства
Relevance. Observational studies (OS) play a key role in the healthcare system because they provide real-world data (RWD). Unlike randomized controlled trials (RCTs), such studies better reflect routine medical practice.
A. A. Lazarev, K. V. Sapozhnikov, D. G. Tolkacheva, N. A. Sableva   +3 more
doaj   +1 more source

Fitting household income by lognormal distribution.

, 2018
Fitting household income by lognormal distribution.
Wei Nie (175261), Dengfeng Wu (4064428), Fang Yu (156838)   +2 more
core   +1 more source

Assessment of the Exposure of Australia to Tropical Cyclones Through a Climatological Model for Cyclone Weather Extent

International Journal of Climatology, EarlyView.
Australia has different levels of exposure to tropical cyclones. Using historical records, this study investigates the spatial variability of tropical cyclone formation across the Southeast Indian–South Pacific basin, quantifies the exposure of different parts of Australia to tropical cyclone weather events, and examines decadal variability in cyclone ...
Adolfo Lugo Ríos, Catherine Kim, Scotte E. Bryan   +2 more
wiley   +1 more source

On‐farm comparison of aerial and chemigation application methods for Striacosta albicosta (lepidoptera: Noctuidae) management in corn using pyrethroid and diamide insecticides

Pest Management Science, EarlyView.
Aerial applications deposited more insecticide on tassels than on ear level (36.4% vs. 19.8%). Across both application methods, chlorantraniliprole minimized ear injury, while bifenthrin provided moderate control. Effective management of S. albicosta requires delivering sufficient insecticide concentration to the target site and achieving adequate ...
Andrea Rilaković, Bradley Fritz, Poudel Bipin, Reka Howard, Abia Katimbo, Miloš Zarić, Julie A. Peterson   +6 more
wiley   +1 more source

Historical fishing regimes uncover deep-sea productivity hotspots in the SW Atlantic Ocean

Frontiers in Marine Science
In the deep-sea, abundant and diverse biological communities tend to occur in areas where combinations of geological, physical and biological processes locally enhance trophic-wide productivity, sustaining aggregations of consumers and top predators ...
Jose Angel A. Perez, Lucas Gavazzoni, Rodrigo Sant’Ana   +2 more
doaj   +1 more source

Inference with the lognormal distribution [PDF]

Several estimators of the expectation, median and mode of the lognormal distribution are derived. They aim to be approximately unbiased, efficient, or have a minimax property in the class of estimators we introduce.
Nicholas Longford
core