Results 71 to 80 of about 167,358 (260)

On illuminating line segments in the plane

Discrete Mathematics, 1995
AbstractLet F be a family of n convex sets in the plane. A set of light sources S illuminates F if every point on the boundary of each element of F is visible from at least one element in S. We prove that if F is a family of n line segments, n ⩾11, then ⌈2n/3⌉ light sources are always sufficient to illuminate F. If all the elements in F are parallel to
Jurek Czyzowicz, Eduardo Rivera-Campo, Jorge Urrutia, Joseph Zaks   +3 more
openaire   +1 more source

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

FEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas, Shahoon Khan, Abhishek Sharma, Byoungchun Lee, Savraj S. Grewal   +4 more
wiley   +1 more source

Adherent Peanut Image Segmentation Based on Multi-Modal Fusion

Sensors
Aiming at the problem of the difficult segmentation of adherent images due to the not fully convex shape of peanut pods, their complex surface texture, and their diverse structures, a multimodal fusion algorithm is proposed to achieve a 2D segmentation ...
Yujing Wang, Fang Ye, Jiusun Zeng, Jinhui Cai, Wangsen Huang   +4 more
doaj   +1 more source

Patch-based Graph Cut Optimization for 3D Line Segment Extraction of Building Structures from Outdoor Point Cloud Data [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The extraction of architectural structural line features can simplify the 3D spatial representation of monitored objects, reduce the storage burden of massive point clouds, and provide crucial geometric parameters for subsequent 3D modelling.
R. Zhai, P. Wan, X. Han, J. Li, Y. He, B. Ding   +5 more
doaj   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

FEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt, Ana‐Maria Sandru, Georg Vucak, Sebastian Didusch, Biljana Riemelmoser, Karin Ehrenreiter, Markus Hartl, Lukas A. Huber, Manuela Baccarini   +8 more
wiley   +1 more source

Intelligent Extraction and Accurate Reconstruction of Road Point Cloud for Oblique Photography [PDF]

Jisuanji gongcheng
With the rapid development of autonomous driving and smart cities, accurate road point cloud segmentation and reconstruction have become key technological requirements.
GU Yuxuan, WANG Yuran, Lü Zejun, ZHANG Yanci
doaj   +1 more source

Autophagy and mitophagy in pancreatic β‐cell homeostasis and their involvement in diabetes pathophysiology

FEBS Letters, EarlyView.
This review focuses on the role of autophagy and mitophagy in maintaining pancreatic β‐cell function and homeostasis. We discuss how genetic defects affecting these pathways contribute to the development of type 1, type 2, monogenic, and gestational diabetes. We further explore their potential as therapeutic targets. Created in BioRender.
Yunkyeong Lee, Mingming Tong, Anna L. Gloyn   +2 more
wiley   +1 more source

Research on Orchard Navigation Line Recognition Method Based on U-Net

Sensors
Aiming at the problems of complex image background and numerous interference factors faced by visual navigation systems in orchard environments, this paper proposes an orchard navigation line recognition method based on U-Net. Firstly, the drivable areas
Ning Xu, Xiangsen Ning, Aijuan Li, Zhihe Li, Yumin Song, Wenxuan Wu   +5 more
doaj   +1 more source

Character Segmentation and Recognition for Myanmar Warning Signboard Images

International Journal of Networked and Distributed Computing (IJNDC), 2019
This paper publicizes the character segmentation and recognition of the Myanmar warning text signboard images taken by a mobile phone camera in natural scene. In this system, two templates are created.
Kyi Pyar Zaw, Zin Mar Kyu
doaj   +1 more source

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

FEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source