Results 81 to 90 of about 3,528 (243)

Mathematical Competitions and Olympiads-Mathematic or Sport

, 2015
The situation surrounding the Olympiads is paradoxical. On the one hand, considerable resources are spent on the Olympiads. On the other hand, there are widespread arguments about the harm of the Olympiads, often very strange ones. For example, there is a perception that success in the Olympiads has little to do with a scientific career.
openaire   +2 more sources

vEMRec: High‐Resolution Volume Electron Microscopy Reconstruction Based on Structure‐Preserving and High‐Fidelity 3D Alignment

Advanced Science, EarlyView.
vEMRec is a frequency‐adaptive computational framework for three‐dimensional alignment in volume electron microscopy. It integrates feature‐based rigid alignment with Gaussian filter‐guided elastic registration to correct rigid misalignments and nonlinear distortions while preserving structural fidelity.
Zhenbang Zhang, Hongjia Li, Zhongjun Yang, Zhiqiang Xu, Duanchen Sun, Xin Gao, Fa Zhang, Renmin Han   +7 more
wiley   +1 more source

Nanoscopic Imaging the Lithiation of Sulfur Nanoparticles under Electron Beam Irradiation

Advanced Science, EarlyView.
ABSTRACT In situ Transmission Electron Microscopy (TEM) provides powerful insights into the reaction mechanisms of Lithium‐Sulfur (Li‐S) batteries. However, distinguishing intrinsic electrochemical behaviors from artifacts induced by high‐energy electron beam irradiation remains a critical challenge.
Rui Huang, Xingyu Zhang, Xingqi Liao, Ruilin Bai, Xianqi Wu, Junlei Xiang, Sheng Cheng, Yifan Zhang, Jing Wang, Hongfa Xiang, Juyeong Kim, Qiaobao Zhang, Yu Yao, Xiaohui Song   +13 more
wiley   +1 more source

Optimal Control Analysis in the Treatment of Solid Tumors using Combined Therapy

Communication in Biomathematical Sciences
In this paper, we develop and analyze a mathematical model that describes the dynamic interactions and competitions among tumor cells, normal cells, immune cells, and transforming growth factor-beta within the tumor microenvironment.
Salaheldin Omer, Hermane Mambili-Mamboundou   +1 more
doaj   +1 more source

Quantitative Stain Mapping in X‐Ray Virtual Histology

Advanced Science, EarlyView.
Virtual histology promises 3D tissue examination without physical sectioning, yet has lacked the tissue‐specificity of conventional pathology. This work demonstrates the first quantitative three‐dimensional stain mapping at histologically relevant resolution, separating contrast agent from tissue to reveal cellular features such as nuclei. The approach
Dominik John, David M. Paganin, Marie‐Christine Zdora, Lisa Marie Petzold, Patrick Ilg, Junan Chen, Sara Baggio, Johannes B. Thalhammer, Sami Wirtensohn, Julian Moosmann, Jörg U. Hammel, Felix Beckmann, Samantha J. Alloo, Jannis N. Ahlers, Madleen Busse, Julia Herzen, Kaye S. Morgan   +16 more
wiley   +1 more source

Addressing Daigou from the Perspective of Channel Competition: Strategy for Retail Management

Mathematics
In China’s on-demand service platforms, daigou agents utilize locational differences through proxy purchasing. Daigou creates an informal supply chain that directly competes with official channels.
Keqin Chang, Rachael Kwai Fun Ip, Pak Hou Che   +2 more
doaj   +1 more source

Label‐Free and Immobilization‐Free Protein‐Binding Assays by Ultraviolet Transient Absorption Microscopy

Advanced Science, EarlyView.
A femtosecond UV pump–probe microscope resolves binding‐induced changes in protein excited‐state dynamics and converts these intrinsic contrasts into an equilibrium affinity readout. By probing tryptophan responses directly in solution, the approach enables quantitative determination of dissociation constants without labeling or immobilization ...
Jianghao Shen, Qiangqiang Wang, Fan Wu, Yang Gao, Lu Lan, Pu Wang   +5 more
wiley   +1 more source

THE HUMANIST FOCUS IN THE MATHEMATICS'S TEACHING PROCESS IN THE SPECIAL EDUCATION / EL ENFOQUE HUMANISTA EN LA ENSEÑANZA DE LA MATEMATICA EN LA EDUCACIÓN ESPECIAL

Didasc@lia: didáctica y educación, 2013
We live in a world of permanent changes, in a society increasingly diverse, reason why the necessity is imposed of thinking the Mathematics as a group of knowledge for students that will make use of its competitions that allow him to understand and to ...
Odalys Ynerarity Castro, Delfín Sánchez Sánchez   +1 more
doaj  

An On‐Demand Neuromorphic Vision System Enabled by a Multi‐Paradigm Neuromorphic Device and Hierarchical Reconfigurability Designed from Device to System Level

Advanced Science, EarlyView.
An on‐demand ultra‐reconfigurable intelligent vision system with hierarchical reconfigurability from device to system levels is demonstrated. Through co‐design of a multi‐paradigm device, reconfigurable circuits, and adaptive system architecture/algorithms, the system enables seamless switching among spiking, non‐spiking, neuromorphic imaging (NI), and
Biyi Jiang, Jiayi Xu, Liang Ran, Xinhe Feng, Khalil Harrabi, Yida Li, Longyang Lin, Feichi Zhou   +7 more
wiley   +1 more source

In Search of Excellence: SHOA as a Competitive Shrike Optimization Algorithm for Multimodal Problems

IEEE Access
This paper proposes the Shrike Optimization Algorithm (SHOA) as a swarm intelligence optimization algorithm. Many creatures, who live in groups and survive for the next generation, randomly search for food; they follow the best one in the swarm, a ...
Hanan K. AbdulKarim, Tarik A. Rashid
doaj   +1 more source