Results 61 to 70 of about 21,455 (264)

Robust Control for a Slung-Mass Quadcopter Under Abrupt Velocity Changes

Applied Sciences
This paper addresses the robust control for a slung-mass quadrotor under abrupt velocity changes. The proposed algorithm is based on a sliding mode controller applied to the quadrotor translational dynamics considering the slung-mass angle as feedback. A
Sergio Salazar, Jonathan Flores, Iván González-Hernández, Yukio Rosales-Luengas, Rogelio Lozano   +4 more
doaj   +1 more source

Collision Avoidance of Moving Obstacles for Underwater Robots [PDF]

Journal of Systemics, Cybernetics and Informatics, 2006
A fuzzy logic for autonomous navigation of underwater robot is proposed in this paper. The VFF(Virtual Force Field) algorithm, which is widely used in the field of mobile robot, is modified for application to the autonomous navigation of underwater robot.
KWON KYOUNG YOUB, Cho Jeongmok, Kwon Sung-Ha, Joh Joongseon   +3 more
doaj  

Epigenetic reprogramming of lineage switching in cancer

FEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı, Burcu Akman, Ezgi Bağırsakçı, Nese Atabey, Serap Erkek‐Ozhan   +4 more
wiley   +1 more source

Depth-Based Safe Landing for Unmanned Aerial Vehicles in GPS-Denied Environment

Drones
This paper presents a safe landing methodology for Unmanned Aerial Vehicles (UAVs) when the GPS-based navigation system fails or is denied or unavailable. The approach relies on the estimation of a flat landing area when landing is required in an unknown
Miguel Angel Cerda, Jonathan Flores, Sergio Salazar, Iván González-Hernández, Rogelio Lozano   +4 more
doaj   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

Autonomous Navigation in Complex Environments

CoRR
7 pages, 3 figures, independent ...
Andrew Gerstenslager, Jomol Lewis, Liam McKenna, Poorva Patel   +3 more
openaire   +2 more sources

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

Speed and Path Planning Optimization of Autonomous Vehicle to Minimize Lap Time in Racing Track

IEEE Access
This study proposes a trajectory optimization method for racing vehicles, aiming to maximize speed and path planning performance by estimating tire friction coefficients.
Young-Jin Roh, Ji-Ung Im, Jong-Hoon Won
doaj   +1 more source

Overview and analysis of regulatory framework for the application of autonomous vessels [PDF]

Tehnika
The notion of an autonomous ship has led to a reconsideration of the existing concept of the ship in terms of safety, security, design, crew, equipment, regulatory and participants in the transport process and in the entire supply chain.
Abođi Anita G., Živojinović Tanja M., Kaplanović Snežana M., Maraš Vladislav S.   +3 more
doaj   +1 more source

Liquid biopsy‐based diagnostic evaluation of hypermethylated CpG sites for ovarian cancer diagnosis

Molecular Oncology, EarlyView.
This schematic outlines the workflow from biomarker identification to duplex MethyLight assay validation for epithelial ovarian cancer diagnosis using cfDNA‐based liquid biopsy. Initial screening of hypermethylated CpG candidates (cg02957270, cg10061138 cg00480298, COL2A1) was performed in tissue using ARMS‐PCR, COBRA, qPCR and image analysis. Selected
Deepa Bisht, Sameer Gupta, Amrita Chaurasia, Manisha Sachan   +3 more
wiley   +1 more source