Results 31 to 40 of about 120,318 (255)

Algorithm for the Weak Target Joint Detection and Ambiguity Resolution Based on Ambiguity Matrix

Remote Sensing
The looking-down mode of space airship bistatic radars faces complex sea–land clutter, and the mode of wide-range surveillance and the over-sight detection of the satellite platform generates a low SNR and range–Doppler ambiguity.
Yitong Mao, Chong Song, Bingnan Wang
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Implementation of a Fuzzy Inference System to Enhance the Measurement Range of Multilayer Interferometric Sensors

Sensors, 2022
This work presents a novel methodology to implement a fuzzy inference system (FIS) to overcome the measurement ambiguity that is typically observed in interferometric sensors.
Everardo Vargas-Rodriguez, Ana Dinora Guzman-Chavez, Rafael Guzman-Cabrera, Anderson Smith Florez-Fuentes   +3 more
doaj   +1 more source

Smaller is better: nanobodies meet NMR

FEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

FDA-STAP by Shrinkage Algorithm Under Range Ambiguity for Limited Training Samples

IEEE Access
When airborne radar detects targets, space-time adaptive processing (STAP) performs a vital role in clutter rejection. As is known, clutter rejection is limited by range ambiguity.
Di Song, Chunyu Song, Dawei Liu, Zhao Wang   +3 more
doaj   +1 more source

Mutant p53R273H disrupts PDPK1 homodimerization and contributes to PDPK1 activation

Molecular Oncology, EarlyView.
How mutant p53R273H drives AKT signaling is unclear. We show that p53R273H, but not wild‐type, directly binds PDPK1 via a mutation‐dependent conformational change. This interaction disrupts inhibitory PDPK1 homodimerization and enhances AKT phosphorylation.
Mei Chee Lim, Alvin Kunyao Guo, Yoko Itahana, Srinivasaraghavan Kannan, Valerie Goh, Mingmin Ong, Terina Yan Wen Tay, Weiying Ye, Sabhashina Radha Krishnan, Jun Nishiyama, Chandra S Verma, Koji Itahana   +11 more
wiley   +1 more source

An Effective Reduced-Dimension EPC-STAP for Limited Snapshots Under Range Ambiguity

Eng
Space-time adaptive processing (STAP) is regarded as a highly effective approach for clutter mitigation in airborne radar applications. However, in practical range-ambiguous scenarios, the clutter suppression performance of traditional STAP algorithms ...
Yue Zhao, Zhao Wang, Xuecong Li, Chao Xu, Di Song, Jinmin Shi   +5 more
doaj   +1 more source

A Doppler Shift Factor Estimation Method for High Speed Mobile Underwater Acoustic Communication [PDF]

Jisuanji gongcheng, 2016
In underwater acoustic communication systems,most of the Doppler shift factor estimation methods cannot deal with the relationship between computational complexity and estimation accuracy under high relative motion speed.In view of this,this paper ...
YANG Jie,ZHOU Shengyuan,YU Fengqi
doaj   +1 more source

Airborne Radar Staggered PRF Coherent Processing Method for Down-Looking Target Detection

Remote Sensing, 2023
Airborne radar plays a crucial role in detecting aerial targets, but its detection capability can be significantly affected by strong ground clutter when operating in down-looking mode.
Xiping Sun, Xipeng Wu, Qinquan Zhou, Lei Zhang, Jianxin Wu   +4 more
doaj   +1 more source