Skip to Content
You are currently on the new version of our website. Access the old version .

1,044 Results Found

  • Article
  • Open Access
1 Citations
2,241 Views
21 Pages

Federated Learning for Human Pose Estimation on Non-IID Data via Gradient Coordination

  • Peng Ni,
  • Dan Xiang,
  • Dawei Jiang,
  • Jianwei Sun and
  • Jingxiang Cui

12 July 2025

Human pose estimation is an important downstream task in computer vision, with significant applications in action recognition and virtual reality. However, data collected in a decentralized manner often exhibit non-independent and identically distrib...

(This article belongs to the Section Sensors and Robotics)
  • Article
  • Open Access
3 Citations
1,770 Views
11 Pages

28 April 2025

The reaction of copper nitrate, phthalic acid (1,2-H2BDC), and bipyridine in ammonia/ethanol media affords two multi-copper (II) cluster-based coordination polymers, namely {[Cu4(bpy)4(OH)2(BDC)2]·2OH·13H2O}n (USC-CP-6) and {[Cu2(BDC)2(...

(This article belongs to the Section Inorganic Chemistry)
  • Article
  • Open Access
2,407 Views
23 Pages

6 December 2024

A gradient-tracking generalized vertical coordinate (GT) for ocean models is proposed in the study. The movement of the grid height surfaces is based on a simple Arbitrary Lagrangian–Eulerian (ALE) method ensuring that the discrete representati...

(This article belongs to the Section Physical Oceanography)
  • Article
  • Open Access
390 Views
34 Pages

26 August 2026

Federated learning (FL) has emerged as an important distributed machine learning paradigm allowing many users to train a model together without sharing raw data. However, FL’s decentralized design makes it very susceptible to both Byzantine and...

(This article belongs to the Special Issue The Future of Cryptography: Trends and Emerging Technologies)
  • Article
  • Open Access
8 Citations
4,806 Views
22 Pages

4 March 2021

This article uses the projected gradient method (PG) for a non-negative matrix factorization problem (NMF), where one or both matrix factors must have orthonormal columns or rows. We penalize the orthonormality constraints and apply the PG method via...

(This article belongs to the Section E1: Mathematics and Computer Science)
  • Article
  • Open Access
435 Views
23 Pages

23 April 2026

Physics-guided computational imaging typically aggregates data fidelity, geometric reconstruction, and sensor consistency into a single scalar loss. In low signal-to-noise ratio (low-SNR) non-line-of-sight imaging, this centralized approach creates a...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
848 Views
25 Pages

26 August 2026

Search-and-rescue (SAR) operations in disaster environments require drone swarms to coordinate efficiently despite incomplete information and potential communication failures. Existing stigmergy-based approaches provide low-bandwidth coordination but...

(This article belongs to the Special Issue Intelligent Cooperative Technologies of UAV Swarm Systems)
  • Article
  • Open Access
22 Citations
7,731 Views
12 Pages

Gradual Stress-Relaxation of Hydrogel Regulates Cell Spreading

  • Wenting Yu,
  • Wenxu Sun,
  • Huiyan Chen,
  • Juan Wang and ,
  • Bin Xue and
  • Yi Cao
  • + 1 author+ 0 author

There is growing evidence that the mechanical properties of extracellular matrices (ECMs), including elasticity and stress-relaxation, greatly influence the function and form of the residing cells. However, the effects of elasticity and stress-relaxa...

(This article belongs to the Special Issue Rational Design and Application of Functional Hydrogels)
  • Article
  • Open Access
5 Citations
3,159 Views
16 Pages

In the inverse problem, the traditional way to obtain a stable solution is based on the maximum smoothness criteria. However, this approach cannot generate clearer and more focused images. In this study, we propose an improved inversion method based...

(This article belongs to the Special Issue Advances in Magnetotelluric Analysis)
  • Article
  • Open Access
143 Views
44 Pages

19 October 2026

Aligning with the global sustainability and sustainable development agenda, the synergistic development of new quality productive forces and agricultural economic resilience constitutes a core issue that is both theoretically pioneering and policy-ur...

  • Article
  • Open Access
538 Views
31 Pages

16 July 2026

Modern electrical distribution systems face increasingly complex protection coordination challenges due to variations in power flows under different operating conditions. In this context, this work proposes an adaptive coordination scheme based on de...

(This article belongs to the Section F1: Electrical Power System)
  • Article
  • Open Access
566 Views
24 Pages

Airfoil flow-field prediction is important for aerodynamic design, but wind-tunnel testing and computational fluid dynamics (CFD) remain costly and time-consuming. Deep learning enables fast inference, yet many existing models still rely on fixed gri...

(This article belongs to the Section Aeronautics)
  • Article
  • Open Access
1 Citations
7,145 Views
7 Pages

Spherical One-Way Wave Equation

  • Oskar Bschorr and
  • Hans-Joachim Raida

28 April 2021

The coordinate-free one-way wave equation is transferred in spherical coordinates. Therefore it is necessary to achieve consistency between gradient, divergence and Laplace operators and to establish, beside the conventional radial Nabla operator ∂Φ/...

  • Article
  • Open Access
13 Citations
5,658 Views
22 Pages

26 February 2022

In this paper, an integrated optimization model based on Gradient-Based Optimizer (GBO) for overcurrent relays coordination along with the challenging practical constraints is proposed. The current proposed effort aims to facilitate the coordination...

(This article belongs to the Special Issue Sustainability of Distributed Generation through Virtual Power Plant)
  • Article
  • Open Access
7 Citations
3,142 Views
13 Pages

Transmit BeampattarnOptimization for Automotive MIMO Radar Coexistedwith Communication in V2V Networks

  • Zheng-Ming Jiang,
  • Pei-Chang Zhang,
  • Lei Huang,
  • Xin He and ,
  • Ji-Hong Zhang and
  • Mohamed Rihan
  • + 1 author+ 0 author

17 February 2020

Due to the flourishing development of vehicle-to-vehicle (V2V) communications and autonomous driving, interference between radar sensing and communication signals becomes a challenging issue. We propose a transmit beamforming based spectrum sharing s...

(This article belongs to the Section Sensor Networks)
  • Article
  • Open Access
12 Citations
2,326 Views
23 Pages

19 June 2025

The Grand Canal serves as a vital water transportation route, a UNESCO World Cultural Heritage site, and an ecological corridor. It is currently undergoing coordinated transformation through infrastructure development, heritage preservation, and ecol...

(This article belongs to the Special Issue Territorial Space and Transportation Coordinated Development)
  • Feature Paper
  • Article
  • Open Access
4 Citations
4,519 Views
24 Pages

Utilizing unmanned aerial vehicles (UAVs) to facilitate wireless communication has emerged as a viable and promising strategy to enhance current and prospective wireless systems. This approach offers many advantages by establishing line-of-sight conn...

  • Article
  • Open Access
6 Citations
3,014 Views
59 Pages

Navigating Ecological–Economic Interactions: Spatiotemporal Dynamics and Drivers in the Lower Reaches of the Jinsha River

  • Zhongyun Ni,
  • Yinbing Zhao,
  • Jingjing Liu,
  • Yongjun Li and ,
  • Xiaojiang Xia and
  • Yang Zhang
  • + 1 author+ 0 author

11 December 2024

The lower reaches of the Jinsha River, serving as a vital ecological barrier in southwestern China and playing a crucial role in advancing targeted poverty alleviation efforts, remain underexplored in terms of the coupling between ecological and econ...

(This article belongs to the Topic Advances in Multi-Scale Geographic Environmental Monitoring: Theory, Methodology and Applications)
  • Article
  • Open Access
3 Citations
2,430 Views
16 Pages

Optimization Study on Salinity Gradient Energy Capture from Brine and Dilute Brine

  • Hailong Gao,
  • Zhiyong Xiao,
  • Jie Zhang,
  • Xiaohan Zhang and ,
  • Xiangdong Liu,
  • Xinying Liu,
  • Jin Cui and
  • Jianbo Li
  • + 3 authors+ 0 author

11 June 2023

The power conversion of salinity gradient energy (SGE) between concentrated brine from seawater desalination and seawater by reverse electrodialysis (RED) benefits energy conservation and also dilutes the discharge concentration to relieve the damage...

(This article belongs to the Section D: Energy Storage and Application)
  • Article
  • Open Access
6 Citations
2,385 Views
27 Pages

25 July 2025

This paper presents a neural network model, PINN-AeroFlow-U, for reconstructing full-field aerodynamic quantities around three-dimensional compressor blades, including regions near the wall. This model is based on structured CFD training data and phy...

  • Article
  • Open Access
3 Citations
1,425 Views
26 Pages

10 May 2025

The sustainable development of urban agglomerations depends on the effective coordination of water, energy, food, and ecology (WEFE) systems. However, disparities in resource endowments and socio-economic conditions create challenges for achieving a...

(This article belongs to the Section Sustainable Urban and Rural Development)
  • Article
  • Open Access
2 Citations
1,562 Views
15 Pages

Multiple DC Modulation Coordination Strategies Based on Transient Energy Function and Deep Deterministic Policy Gradient Algorithm

  • Chao Xing,
  • Mingqun Liu,
  • Junzhen Peng,
  • Xueke Wang and ,
  • Yuhong Wang,
  • Zongsheng Zheng,
  • Shilin Gao and
  • Jianquan Liao
  • + 3 authors+ 0 author

16 March 2024

Ultra-low-frequency oscillation (ULFO) is a new problem of frequency stability in asynchronous network back-end power networks. The negative damping provided by hydropower units is the direct cause of ultra-low-frequency oscillation, and DC modulatio...

(This article belongs to the Section Electrical, Electronics and Communications Engineering)
  • Article
  • Open Access
576 Views
23 Pages

A Coordinated Continual Intrusion Detection Approach with Feature-Space MMD Drift Detection and Gradient-Matching Coresets

  • Bo Xu,
  • Rui Shi,
  • Qiang Yang,
  • Tao Zhang and ,
  • Hong Huang,
  • Feixiang Zhao,
  • Xu Tong,
  • Longhe Hu and
  • Sen Ma
  • + 4 authors+ 0 author

17 July 2026

Network intrusion detection systems (NIDSs) deployed in dynamic environments face concept drift from evolving attacks and traffic patterns, causing model reliability to degrade over time. Continual learning (CL) offers an adaptive solution, yet many...

  • Article
  • Open Access
1 Citations
4,279 Views
23 Pages

SM-GCG: Spatial Momentum Greedy Coordinate Gradient for Robust Jailbreak Attacks on Large Language Models

  • Landi Gu,
  • Xu Ji,
  • Zichao Zhang,
  • Junjie Ma and ,
  • Xiaoxia Jia and
  • Wei Jiang
  • + 1 author+ 0 author

9 October 2025

Recent advancements in large language models (LLMs) have increased the necessity of alignment and safety mechanisms. Despite these efforts, jailbreak attacks remain a significant threat, exploiting vulnerabilities to elicit harmful responses. While w...

  • Article
  • Open Access
983 Views
28 Pages

14 May 2026

The dependence of electronic products on printed circuit boards (PCBs) is increasing. In recent years, PCB defect detection technology has achieved considerable results, but the defect targets are small, the background is complex, and there are many...

(This article belongs to the Section Fault Diagnosis & Sensors)
  • Technical Note
  • Open Access
11 Citations
3,324 Views
14 Pages

This paper presents a formulation of point contact elastohydrodynamic lubrication analysis for an isothermal, non-Newtonian flow. A coordinate system of the pressure gradient was employed herein. A Couette flow and a Poiseuille flow were considered a...

(This article belongs to the Special Issue Grease)
  • Article
  • Open Access
13 Citations
4,294 Views
26 Pages

Gradient Descent-Based Optimization Method of a Four-Bar Mechanism Using Fully Cartesian Coordinates

  • María T. Orvañanos-Guerrero,
  • Claudia N. Sánchez,
  • Mariano Rivera,
  • Mario Acevedo and
  • Ramiro Velázquez

1 October 2019

Machine vibrations often occur due to dynamic unbalance inducing wear, fatigue, and noise that limit the potential of many machines. Dynamic balancing is a main concern in mechanism and machine theory as it allows designers to limit the transmission...

(This article belongs to the Special Issue Vibration-Based Structural Health Monitoring)
  • Article
  • Open Access
1 Citations
550 Views
18 Pages

22 April 2026

Under the combined pressures of climate change and irrigated cropland expansion, groundwater tables are declining rapidly across arid regions, thereby intensifying water limitation in riparian ecosystems. However, the mechanisms by which dominant rip...

(This article belongs to the Special Issue The Growth of Plants in Arid Environments)
  • Article
  • Open Access
5 Citations
3,587 Views
19 Pages

Logistic Biplot by Conjugate Gradient Algorithms and Iterated SVD

  • Jose Giovany Babativa-Márquez and
  • José Luis Vicente-Villardón

23 August 2021

Multivariate binary data are increasingly frequent in practice. Although some adaptations of principal component analysis are used to reduce dimensionality for this kind of data, none of them provide a simultaneous representation of rows and columns...

(This article belongs to the Special Issue Multivariate Statistics: Theory and Its Applications)
  • Feature Paper
  • Article
  • Open Access
1,004 Views
20 Pages

11 November 2025

Stochastic differential equations (SDEs) with multiple conserved quantities are ubiquitous in scientific fields, modeling systems from molecular dynamics to celestial mechanics. While geometric numerical integrators that preserve single invariants ar...

(This article belongs to the Special Issue Advances in Computational Mathematics and Applied Mathematics, 2nd Edition)
  • Article
  • Open Access
11 Citations
2,084 Views
23 Pages

Research on the Dynamic Modeling of Rigid–Flexible Composite Spacecraft Under Fixed Constraints Based on the ANCF

  • Jiaqi Wu,
  • Guohua Kang,
  • Junfeng Wu,
  • Chuanxiao Xu and ,
  • Jiayi Zhou,
  • Xinyong Tao and
  • Yinmiao Hua
  • + 2 authors+ 0 author

Dynamically modeling the flexible characteristics of large-scale jointed composite spacecraft is challenging. In this study, a dynamic modeling method for rigid–flexible composite spacecraft is proposed based on the absolute nodal coordinate fo...

(This article belongs to the Section Astronautics & Space Science)
  • Article
  • Open Access
4,136 Views
50 Pages

Innovation-driven development is the main driving strategy for promoting high-quality economic development. Technological innovation is the core of innovation-driven development. Financial innovation is an important aspect of promoting financial deve...

(This article belongs to the Special Issue Recent Developments in Data Science and Knowledge Discovery)
  • Review
  • Open Access
18 Citations
10,376 Views
16 Pages

The Forces behind Directed Cell Migration

  • Isabela C. Fortunato and
  • Raimon Sunyer

1 December 2022

Directed cell migration is an essential building block of life, present when an embryo develops, a dendritic cell migrates toward a lymphatic vessel, or a fibrotic organ fails to restore its normal parenchyma. Directed cell migration is often guided...

(This article belongs to the Special Issue State-of-the-Art Biophysics in Spain)
  • Article
  • Open Access
2,926 Views
16 Pages

19 July 2021

The deformation of a solid due to changing boundary conditions is described by a deformation gradient in Euclidean space. If the deformation process is reversible (conservative), the work done by the changing boundary conditions is stored as potentia...

(This article belongs to the Special Issue Dynamical Systems in Engineering)
  • Article
  • Open Access
3,426 Views
15 Pages

13 October 2022

Numerous studies have demonstrated that animal brains accurately infer whether multisensory stimuli are from a common source or separate sources. Previous work proposed that the multisensory neurons in the dorsal medial superior temporal area (MST-d)...

(This article belongs to the Special Issue The Neural Basis of Multisensory Plasticity)
  • Article
  • Open Access
2 Citations
5,006 Views
9 Pages

12 July 2018

Computation of the distance between point and triangle in 3D is a common task in numerical analysis. The input values of the algorithm are coordinates of three points of the triangle and one point from which the distance is determined. An existing al...

  • Article
  • Open Access
5 Citations
862 Views
18 Pages

12 December 2025

In high-precision fields such as automotive and aerospace, solid elements are commonly used to verify the dynamic response of key components, which can comprehensively simulate three-dimensional stress, deformation, and temperature field changes. In...

(This article belongs to the Section Control Systems)
  • Article
  • Open Access
2 Citations
2,096 Views
17 Pages

26 December 2022

We take into account the dynamics of three types of models of rotating galaxies in polar coordinates in a rotating frame. Due to non-axisymmetric potential perturbations, the angular momentum varies with time, and the kinetic energy depends on the mo...

(This article belongs to the Special Issue Symmetry in Gravity Research)
  • Article
  • Open Access
187 Views
32 Pages

7 October 2026

With global uncertainty on the rise and stronger ecological constraints, urban agglomerations have become important spatial carriers for regional flows of economic factors and coordinated development, and improving their economic resilience is essent...

  • Article
  • Open Access
5 Citations
2,470 Views
25 Pages

7 December 2022

The free vibration of isotropic gradient elastic thick non-rectangular microplates is analyzed in this paper. To capture the microstructure-dependent effects of microplates, a negative second-order gradient elastic theory with symmetry is utilized. T...

(This article belongs to the Section F: Engineering and Materials)
  • Article
  • Open Access
572 Views
26 Pages

Quantifying the Drivers of Vegetation Resilience Gradient Effects Across Hierarchical Administrative Borders: A Case Study of the Beijing–Tianjin–Hebei Region

  • Lifu Zheng,
  • Yunlu Zhang,
  • Ruojing Li,
  • Kaiping Wang and ,
  • Siqi Wu,
  • Tieyue Qiang and
  • Luxuan Lei
  • + 2 authors+ 0 author

22 July 2026

Understanding vegetation resilience gradient effects across hierarchical administrative borders is critical for cross-jurisdictional land management yet remains underexplored. This study integrates an AR(1) model with XGBoost-SHAP analysis to assess...

(This article belongs to the Section Land Use, Impact Assessment and Sustainability)
  • Article
  • Open Access
11 Citations
3,106 Views
14 Pages

Tropospheric Second-Order Horizontal Gradient Modeling for GNSS PPP

  • Yaozong Zhou,
  • Yidong Lou,
  • Weixing Zhang,
  • Peida Wu and ,
  • Jingna Bai and
  • Zhenyi Zhang
  • + 1 author+ 0 author

26 September 2022

The asymmetric delay has a considerable impact on Global Navigation Satellite Systems (GNSS) Positioning, Navigation and Timing (PNT) applications. In GNSS analyses, the impacts of the asymmetric delay are commonly compensated by using the classical...

(This article belongs to the Special Issue Beidou/GNSS Precise Positioning and Atmospheric Modeling II)
  • Article
  • Open Access
2,671 Views
14 Pages

17 September 2021

Coordinate-transformed analysis of turbulence transport is developed, which leads to a symmetric set of gradient expressions for the Reynolds stress tensor components. In this perspective, the turbulence structure in wall-bounded flows is seen to ari...

(This article belongs to the Special Issue Modelling and Simulation of Turbulent Flows)
  • Article
  • Open Access
1,122 Views
28 Pages

5 November 2025

Industrial chain modernization is vital for driving the development of a modern country, boosting national competitiveness and upholding economic security. This study examines the impact of coordinated two-way FDI development on industrial chain mode...

  • Article
  • Open Access
1 Citations
1,286 Views
36 Pages

10 September 2025

When considering an urban agglomeration as a unit, promoting the coupling and coordination of the land price gradient and industrial gradient is crucial for achieving regional integrated development. We selected the Beijing–Tianjin–Hebei...

(This article belongs to the Section Economic and Business Aspects of Sustainability)
  • Article
  • Open Access
13 Citations
3,518 Views
21 Pages

Multi-Agent Reinforcement Learning (MARL) has shown strong advantages in urban multi-intersection traffic signal control, but it also suffers from the problems of non-smooth environment and inter-agent coordination. However, most of the existing rese...

  • Article
  • Open Access
13 Citations
4,177 Views
20 Pages

The rational assessment of regional energy distribution provides a scientific basis for the selection and siting of power generation units. This study, which focused on the Bohai Sea, set 31 research coordinate points in the Bohai sea for assessing t...

(This article belongs to the Special Issue Advanced Marine Energy Harvesting Technologies)
  • Article
  • Open Access
2 Citations
1,581 Views
27 Pages

Optimizing Automatic Voltage Control Collaborative Responses in Chain-Structured Cascade Hydroelectric Power Plants Using Sensitivity Analysis

  • Li Zhang,
  • Jie Yang,
  • Jun Wang,
  • Lening Wang and ,
  • Haiming Niu,
  • Xiaobing Liu,
  • Simon X. Yang and
  • Kun Yang
  • + 3 authors+ 0 author

22 May 2025

Southwestern China has abundant hydropower networks, wherein neighboring cascade hydropower stations within the same river basin are typically connected to the power system in a chain-structured configuration. However, when such chain-structured casc...

(This article belongs to the Special Issue Leveraging Flexibility Resources to Enhance Renewable Energy Integration and Grid Stability)
  • Review
  • Open Access
248 Views
28 Pages

The Challenge of Coping with Dry Atmospheres: Structural and Physiological Adaptations to High VPD in Terrestrial Plants

  • Eustaquio Gil-Pelegrín,
  • Juan Pedro Ferrio,
  • Antonio Diaz-Espejo,
  • Victoria Fernández and ,
  • Luna Morcillo,
  • Domingo Sancho-Knapik,
  • Alberto Vilagrosa and
  • José Javier Peguero-Pina
  • + 3 authors+ 0 author

20 October 2026

Terrestrial plants have developed structural and physiological traits to maintain water balance under variable environments. Protective surfaces reduce water loss but also restrict CO2 diffusion. This constraint has been overcome via stomata, which c...

(This article belongs to the Special Issue The Mechanisms of Plants’ Acclimation to Dry Atmospheres)
  • Article
  • Open Access
377 Views
18 Pages

To promote the high-quality development of the new-energy-vehicle industry, this paper takes the provincial panel data from 2016 to 2023 as its research object and adopts the coupling coordination degree model to measure the coupling coordination lev...

(This article belongs to the Section Marketing, Promotion and Socio Economics)

of 21