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"Spherical Poisson point process intensity function modeling and estima" by Tin Lok James Ng and Andrew Zammit-Mangion

Recent years have seen an increased interest in the application of methods and techniques commonly associated with machine learning and artificial intelligence to spatial statistics. Here, in a celebration of the ten-year anniversary of the journal Spatial Statistics, we bring together normalizing flows, commonly used for density function estimation in machine learning, and spherical point processes, a topic of particular interest to the journal's readership, to present a new approach for modeling non-homogeneous Poisson process intensity functions on the sphere. The central idea of this framework is to build, and estimate, a flexible bijective map that transforms the underlying intensity function of interest on the sphere into a simpler, reference, intensity function, also on the sphere. Map estimation can be done efficiently using automatic differentiation and stochastic gradient descent, and uncertainty quantification can be done straightforwardly via nonparametric bootstrap. W ....

Pacific Ocean , Spatial Statistics , North Pacific , Exponential Map , Maximum Likelihood , Normalizing Flows , Adial Flows , Rapping Potential Functions ,

Dynamics of hospital-acquired SARS-CoV-2 infection in a geriatric setting

Researchers investigated the extent of nosocomial SARS-CoV-2 infection among elderly patients and healthcare workers in a geriatric hospital. ....

Chameleonseye Shutterstock , Geneva University Hospitals , Swiss Federal Office Of Public , Department Of Human Resources , Department Of Occupational Health , Swiss Federal Office , Public Health Mandated , Occupational Health , Human Resources , Maximum Likelihood , Coronavirus Disease Covid 19 , Ars Cov 2 , Covid 19 , Infection Control , Evere Acute Respiratory , Evere Acute Respiratory Syndrome ,

A year of genomic surveillance reveals how the SARS-CoV-2 pandemic unfolded in Africa

A year of genomic surveillance reveals how the SARS-CoV-2 pandemic unfolded in Africa
science.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from science.org Daily Mail and Mail on Sunday newspapers.

Burkina Faso , United States , South Africa , World Health Organization , Al Qahirah , Vocs Vois , North Africa , Southern Africa , Eastern Cape Province , Maximum Likelihood , North African , Middle East , North America , Saharan Africa , East Africa , These African , Eastern Cape ,

Frontiers | Emergence of Dengue 4 as Dominant Serotype During 2017 Outbreak in South India and Associated Cytokine Expression Profile

Dengue virus infection is prevalent in tropical and sub-tropical regions of the world, which is fatal if untreated symptomatically. Emergence of new genotype within serotypes led to enhanced severity. The objective of the study is to identify the molecular characteristics of the DENV circulated during 2017 outbreak in Tamil Nadu, India and, to investigate the role of inflammatory cytokines in different ‘serotypes’ and in ‘dengue severity’. A total of 135 suspected samples were tested for DENV infection using IgM, IgG and qPCR assay; where 76 samples were positive for DENV and analysed for twelve inflammatory cytokines using ELISA. Serotyping shows 14 DENV-1, 22 DENV-2, 7 DENV-3 and 33 DENV-4, where DENV-4 was predominant. Among seventy-six, forty-two isolates were successfully sequenced for C-prM region and grouped. A lineage shift was observed in DENV-4 genotype. Irrespective of serotypes, IFNγ was significantly elevated than control and in primary infection indicating its ro ....

United States , United Kingdom , New Delhi , Tamil Nadu , Sri Lanka , Republic Of , North Western , City Of , Andaman And Nicobar Islands , Saudi Arabia , Gonzalez Mateos , Flores Aguilar , Flavivirus Serocomplex Cross , Vellore Cecilia , Cladec Cecilia , Lakshmana Rao , Alwin Prem Anand , Andrea Wizenmann , Cruz Hernandez , Oswaldo Cruz , Gowri Sankar , Triuppur Alagarasu , Pondicherry Hoti , Waal Malefyt , Lopez Martinez , Nadu Manakkadan ,

New Colombian SARS-CoV-2 lineage shares antibody-resistant mutations with other variants

New Colombian SARS-CoV-2 lineage shares antibody-resistant mutations with other variants
news-medical.net - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from news-medical.net Daily Mail and Mail on Sunday newspapers.

South Africa , United States , South African , Michael Burgessmar , Michael Burgess , Katherine Laiton Donato , Maximum Likelihood , ஒன்றுபட்டது மாநிலங்களில் , மைக்கேல் பர்கஸ் ,