Results 31 to 40 of about 25,142 (174)

Rapid Recognition and Picking Points Automatic Positioning Method for Table Grape in Natural Environment

智慧农业, 2023
ObjectiveRapid recognition and automatic positioning of table grapes in the natural environment is the prerequisite for the automatic picking of table grapes by the picking robot.MethodsAn rapid recognition and automatic picking points positioning method
ZHU Yanjun, DU Wensheng, WANG Chunying, LIU Ping, LI Xiang   +4 more
doaj   +1 more source

Clustering by Contour Coreset and Variational Quantum Eigensolver

Advanced Quantum Technologies
Abstract Recent work has proposed solving the k‐means clustering problem on quantum computers via the Quantum Approximate Optimization Algorithm (QAOA) and coreset techniques. Although the current method demonstrates the possibility of quantum k‐means clustering, it does not ensure high accuracy and consistency across a wide range of ...
Canaan Yung, Muhammad Usman
openaire   +2 more sources

ContexTour: Contextual Contour Visual Analysis on Dynamic Multi-Relational Clustering [PDF]

Proceedings of the 2010 SIAM International Conference on Data Mining, 2010
Huge amounts of rich context social network data are generated everyday from various applications such as FaceBook and Twitter. These data involve multiple social relations which are community-driven and dynamic in nature. The complex interplay of these characteristics poses tremendous challenges on the users who try to understand the underlying ...
Yu-Ru Lin, Jimeng Sun, Nan Cao, Shixia Liu   +3 more
openaire   +1 more source

A High-Accuracy Contour Segmentation and Reconstruction of a Dense Cluster of Mushrooms Based on Improved SOLOv2

Agriculture
This study addresses challenges related to imprecise edge segmentation and low center point accuracy, particularly when mushrooms are heavily occluded or deformed within dense clusters. A high-precision mushroom contour segmentation algorithm is proposed
Shuzhen Yang, Jingmin Zhang, Jin Yuan
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Community structure detection algorithm for heterogeneous edge network [PDF]

Jisuanji gongcheng, 2019
In order to solve the problem that topological communities gotten by community structure detection algorithms are not same with the functional communities,a community structure detection algorithm based on Typed-Edge Similarity Clustering(TESC) is ...
WANG Simeng,CAO Jia
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

An Improved K-Means Algorithm Based on Contour Similarity

Mathematics
The traditional k-means algorithm is widely used in large-scale data clustering because of its easy implementation and efficient process, but it also suffers from the disadvantages of local optimality and poor robustness.
Jing Zhao, Yanke Bao, Dongsheng Li, Xinguo Guan   +3 more
doaj   +1 more source

Adaptive Navigation Control Primitives for Multirobot Clusters: Extrema Finding, Contour Following, Ridge/Trench Following, and Saddle Point Station Keeping

IEEE Access, 2018
Adaptive navigation is the process of modifying a vehicle's direction or motion path based on measurements taken while moving. When exploring a scalar field, such as the temperature or the concentration level of a pollutant across a region of interest ...
Christopher A. Kitts, Robert T. McDonald, Michael A. Neumann   +2 more
doaj   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source