Results 61 to 70 of about 162,676 (316)

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

UcoSLAM: Simultaneous Localization and Mapping by Fusion of KeyPoints and Squared Planar Markers

open access: yes, 2019
This paper proposes a novel approach for Simultaneous Localization and Mapping by fusing natural and artificial landmarks. Most of the SLAM approaches use natural landmarks (such as keypoints).
Medina-Carnicer, Rafael   +1 more
core   +1 more source

Lazy localization using the Frozen-Time Smoother [PDF]

open access: yes, 2008
We present a new algorithm for solving the global localization problem called Frozen-Time Smoother (FTS). Time is 'frozen', in the sense that the belief always refers to the same time instant, instead of following a moving target, like Monte Carlo ...
Censi, A., Tipaldi, G. D.
core   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

ORB-SLAM: a Versatile and Accurate Monocular SLAM System

open access: yes, 2015
This paper presents ORB-SLAM, a feature-based monocular SLAM system that operates in real time, in small and large, indoor and outdoor environments. The system is robust to severe motion clutter, allows wide baseline loop closing and relocalization, and ...
Montiel, J. M. M.   +2 more
core   +1 more source

Parallelizing RRT on large-scale distributed-memory architectures [PDF]

open access: yes, 2013
This paper addresses the problem of parallelizing the Rapidly-exploring Random Tree (RRT) algorithm on large-scale distributed-memory architectures, using the Message Passing Interface.
Cortés, Juan   +2 more
core   +3 more sources

GV-Bench: Benchmarking Local Feature Matching for Geometric Verification of Long-term Loop Closure Detection [PDF]

open access: yesIEEE/RJS International Conference on Intelligent RObots and Systems
Visual loop closure detection is an important module in visual simultaneous localization and mapping (SLAM), which associates current camera observation with previously visited places.
Jingwen Yu   +4 more
semanticscholar   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Laser-Based Online Sliding-Window Approach for UAV Loop-Closure Detection in Urban Environments

open access: yesInternational Journal of Advanced Robotic Systems, 2016
Online loop-closure detection serves as an essential task for Unmanned Aerial Vehicles (UAVs) equipped with laser scanners. Due to the inherent errors in UAVs' pose estimation, a 3-D reconstruction algorithm is adopted to perform 3-D map building, which ...
Anqing Wang   +5 more
doaj   +1 more source

Intensity Scan Context: Coding Intensity and Geometry Relations for Loop Closure Detection [PDF]

open access: yesIEEE International Conference on Robotics and Automation, 2020
Loop closure detection is an essential and challenging problem in simultaneous localization and mapping (SLAM). It is often tackled with light detection and ranging (LiDAR) sensor due to its view-point and illumination invariant properties.
Han Wang, Chen Wang, Lihua Xie
semanticscholar   +1 more source

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