Results 101 to 110 of about 7,238,657 (296)

A Local Feature Descriptor Based on SIFT for 3D Pollen Image Recognition

IEEE Access, 2019
Biological particle automatic classification is an important issue in index tasking for people with pollen hypersensitivity. This paper attempts to present a local feature extraction method based on SIFT for automatic 3D pollen image recognition.
Zhuo Wang, Wenzheng Bao, Da Lin, Zixuan Wang   +3 more
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

The Open-Loop Discounted Linear Quadratic Differential Game for Regular Higher Order Index Descriptor Systems [PDF]

In this paper we consider the discounted linear quadratic differential game for descriptor systems that have an index larger than one. We derive both necessary and sufficient conditions for existence of an open-loop Nash (OLN) equilibrium.
Salmah, Y., Wijayanti, I.E., Engwerda, J.C.   +2 more
core  

Image retrieval based on the feature of VLAD and sparse representation

Dianxin kexue, 2016
In order to achieve the goal of fast and accurate image retrieval,an image retrieval method combining VLAD （vector of locally aggregated descriptor）feature and sparse representation was proposed.
Wen YAN, Wei JIN, Randi FU
doaj   +2 more sources

Robust 2D Ear Registration and Recognition Based on SIFT Point Matching

, 2008
Significant recent progress has shown ear recognition to be a viable biometric. Good recognition rates have been demonstrated under controlled conditions, using manual registration or with specialised equipment. This paper describes a new technique which
Mark S. Nixon, Nixon, Mark, John D. Bustard, Bustard, John D., Nixon, Mark S.   +4 more
core   +2 more sources

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Deep learning-based 3D local feature descriptor from Mercator projections [PDF]

, 2019
Point clouds provide rich geometric information about a shape and a deep neural network can be used to learn effective and robust features. In this paper, we propose a novel local feature descriptor, which employs a Siamese network to directly learn ...
Bennamoun, M., Rezaei, M., Sohel, F., Derhami, V., Rezaeian, M.   +4 more
core  

ML-MIFD: Multi-Level Multimodal Invariant Feature Descriptor [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Existing cross-modal feature descriptors are typically limited to single-level local statistics, leading to insufficient structural representation and degraded matching performance under nonlinear radiometric differences and strong noise. To address this
Z. Wang, H. Guo, Y. Yao, Y. Zhang, P. Wu, Y. Wan   +5 more
doaj   +1 more source

Prospecting the protein design landscape

FEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona, Katharina T. Stonig, Jens Meiler, Clara T. Schoeder, Monica L. Fernández‐Quintero   +4 more
wiley   +1 more source

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

FEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux, Christian Lévêque, Fodil Azzaz, Marion Sangiardi, Sarosh R Irani, Michael Seagar, Jacques Fantini, Oussama El Far   +7 more
wiley   +1 more source