Results 41 to 50 of about 8,837 (176)

Closed-Form Solution for CFAR Detection Threshold in G⁰ Distributed SAR Clutter

IEEE Access
We devise a constant false alarm rate (CFAR) detector for detecting targets in clutter regions with varying degrees of heterogeneity. The CFAR detector employs the $\mathcal {G}^{0}$ distribution for characterizing the statistics of background ...
Dheeren Ku Mahapatra, Sourabh Paul, Biswajit Dwivedy, Alejandro C. Frery   +3 more
doaj   +1 more source

Cryo‐EM structure of ALC1 in an open conformation bound to a PARylated nucleosome

Acta Crystallographica Section D, Volume 82, Issue 6, Page 683-699, June 2026.
Reanalysis of a publicly available cryo‐EM dataset identifies a new conformation of the oncogenic chromatin remodeler ALC1/CHD1L bound to a PARylated nucleosome. This new structure reveals the position of the macro domain in the complex, and may help to understand the large conformational change leading to the activation of ALC1.Nucleosomes are the ...
Hannah R. Bridges, Luka Bacic, Sebastian Deindl, Guillaume Gaullier   +3 more
wiley   +1 more source

Widespread Variation in Retinochrome Spectral Absorbance Across Scallop Phylogeny

Molecular Ecology, Volume 35, Issue 11, June 2026.
ABSTRACT Vision is a two‐step process, including phototransduction initiated by a retinal‐bound opsin photopigment, and subsequent photopigment regeneration wherein the inactive state is restored. Because retinal isomerization, or changing of the molecular structural conformation, drives the activation of opsin photopigments, the reverse process is a ...
Kyle E. McElroy, Anna K. G. Ward, Jorge A. Audino, Jeanne M. Serb   +3 more
wiley   +1 more source

Evolutionary Stability of the Shark Snout: Geometric Morphometrics of Ventral Facial Openings

Annals of the New York Academy of Sciences, Volume 1560, Issue 1, June 2026.
Landmark‐based geometric morphometrics of 453 shark species reveal that ventral head morphology is conserved across Selachii. Morphospace and ancestral reconstructions support strong phylogenetic control and limited divergence from ancestral conditions.
Stefano Aicardi, Giacomo Rosa, Alessio Longo, Matteo Bozzo, Beatrice Risso, Elisa Damonte, Andrea Amaroli, Simona Candiani, Sara Ferrando   +8 more
wiley   +1 more source

CFAR Detection from Noncoherent Radar Echoes Using Bayesian Theory

EURASIP Journal on Advances in Signal Processing, 2010
We propose a new constant false alarm rate (CFAR) detection method from noncoherent radar echoes, considering heterogeneous sea clutter. It applies the Bayesian theory for adaptive estimation of the local clutter statistical distribution in the cell ...
Wataru Suganuma, Hiroyuki Yamaguchi
doaj   +2 more sources

OPTIMAL SELECTION OF THE CA-CFAR ADJUSTMENT FACTOR FOR K POWER SEA CLUTTER WITH STATISTICAL VARIATIONS

Ciencia e Ingeniería Neogranadina, 2017
La presencia de la señal interferente de clutter marino establece limitaciones en la calidad de la detección de radar en ambientes costeros y de alta mar. El procesador CA-CFAR es la solución clásica para detectar blancos de radar.
José Raúl Machado Fernández, Jesús C. Bacallao Vidal   +1 more
doaj  

A Novel Copula-Based Multi-Feature CFAR Framework for Radar Target Detection

Remote Sensing
Multi-feature radar target detection enhances the discrimination between targets and clutter, thereby improving detection accuracy. However, the complex nonlinear dependencies among features present significant challenges for precise control of the false
Juan Li, Yunlong Dong, Ningbo Liu, Yong Huang, Xingyu Jiang, Jinping Sun   +5 more
doaj   +1 more source

Maternal characteristics associated with ovalbumin concentrations in breast milk

Pediatric Allergy and Immunology, Volume 37, Issue 5, May 2026.
Abstract Background Breast milk ovalbumin concentrations have been measured with considerable inter‐individual variation. Body mass index (BMI) and gestational diabetes mellitus (GDM) in humans, and fish oil supplementation in pigs, have been associated with breast milk protein concentrations.
Sophie A. Hughes, Jessica R. Metcalfe, Sharon L. Perrella, Donna T. Geddes, Debra J. Palmer   +4 more
wiley   +1 more source

Global Perspective of Novel Therapeutic Strategies for the Management of NeuroAIDS

Biomolecular Concepts, 2018
Among Human immunodeficiency virus (HIV) infected individuals, around two-thirds of patients present with neuroAIDS, where HIV-associated neurocognitive disorders (HAND), and HIV-associated dementia (HAD) are the most prevailing neurological ...
Kumar Swatantra, Maurya Vimal K, Dandu Himanshu R, Bhatt Madan LB, Saxena Shailendra K   +4 more
doaj   +1 more source

Is There a Relationship Between Secondary Metabolites of Leaves and the Growth of Eucalyptus Species?

Physiologia Plantarum, Volume 178, Issue 3, May/June 2026.
ABSTRACT Flavonoids are essential molecules that affect plant growth and development and act as defense mechanisms against biotic and abiotic factors. This study aimed to assess whether the content of flavonoids in different species of Eucalyptus is related to tree growth.
Ana Carina da Silva Cândido Seron, Dthenifer Cordeiro Santana, Izabela Cristina de Oliveira, Larissa Pereira Ribeiro Teodoro, Cid Naudi Silva Campos, Gileno Brito de Azevedo, Rita de Cássia Félix Alvarez, Regimar Garcia dos Santos, Paulo Eduardo Teodoro   +8 more
wiley   +1 more source