Qufu Normal University

A fixed-time fuzzy control framework for spacecraft based on disturbance estimator and guaranteed performance

This paper studies spacecraft attitude tracking issue under actuator faults and external disturbances. A dynamic estimator reconstructs the lumped disturbance without differentiating the measured attitude-rate signal. The estimation error decays exponentially for constant disturb...

Research on Metal Surface Defect Evaluation Based on DualBranch-SSMNet and Supervised Contrastive Learning

Surface defect assessment of metallic workpieces is critical for industrial production and structural safety. Although eddy current testing provides non-contact and nondestructive inspection advantages, existing deep learning methods still suffer from insufficient long-range depe...

Synergistic Dual-Site Coordination of a Multifunctional Phosphonate Additive for Efficient Perovskite Solar Cells

Abstract The accelerated evolutionary trajectory of perovskite solar cells has propelled them to the forefront as a preeminent candidate for affordable and efficient renewable energy technologies. However, crystal defects and bulk imperfections within the perovskite films critica...

Achieving high-efficiency thermoelectric collaborative storage based on a temperature-matching strategy: Combining calcium looping and reversible solid oxide cells

To address the energy storage challenge in large-scale renewable energy integration, the concentrating solar power (CSP) with calcium looping (CaL) system provides a viable solution for long-duration energy storage. However, such a system inherently faces the problem of balancing...

Thermometry-derived quasi-dynamic source modeling for full-course temperature prediction in microwave ablation: A phantom study

Accurate temperature prediction in microwave ablation requires a source model that can reflect the stage-dependent nature of heating. In this study, we developed a thermometry-derived quasi-dynamic effective-SAR framework for full-course temperature prediction. The method estimat...

Privacy‐Preserving Achieving Average Consensus for Multi‐Agent Systems via Partial Information Transmission Against Curious Nodes Collusion

ABSTRACT This paper investigates the privacy‐preserving average consensus problem in multi‐agent systems against collusive attacks, with the core objective of achieving accurate average consensus while protecting the privacy of agents' initial states. Existing methods are mostly...

Batch Scheduling on Parallel Machines With Submodular Costs

ABSTRACT This paper is motivated by the characteristics in the quenching and tempering process of steel workpieces, where the batch processing time is increasing and exhibits diminishing marginal returns. We model the batch processing time using submodular functions and study bat...

MSRA-CCL: Multi-Source Reliability-Aware Aggregation and Cross-Domain Consistency Learning for Weakly Supervised Sentiment Classification

Sentiment classification often relies on costly in-domain annotations, while weak-supervision sources provide low-cost but inconsistent labels. We propose Multi-Source Reliability-Aware Aggregation and Cross-domain Consistency Learning (MSRA-CCL) for weakly supervised sentiment c...

Adaptive Preview Fault‐Tolerant Control With Partial‐State Feedback for Autonomous Recovery of UAV–UGV Collaborative Grazing

ABSTRACT The collaboration between UAV and UGV will greatly liberate manpower and improve the production efficiency of animal husbandry. The autonomous recovery of UAV is important for the whole collaboration system, especially when it meets with unexpected UAV faults and wind tu...

Characterizing the signless Laplacian Z-spectral radius for uniform hypergraphs

This paper investigates the Z -spectral radius of uniform hypergraphs. For k -uniform hypergraphs ( k ≥ 4 ), we prove that ρ Z ( Q ( G ) ) = Δ , offering exact solutions to large-scale instances. Further, we propose novel Brualdi-type bounds for the signless Laplacian Z -spectral...

Individual and school determinants of collective teacher innovativeness: a multilevel analysis

Collective teacher innovativeness is the team-level propensity perceived by teachers to seek, develop, and implement new pedagogical practices and is a pivotal factor for successful educational reforms. This study investigates multilevel factors contributing to collective teacher...

Hierarchy of the Constituent Characters in Chinese Non-Idiomatic Three-Character Words: An Eye-Tracking Study

The internal structure of Chinese three-character words may guide eye movements, but whether character-level eye movements vary with hierarchical roles remains unclear. In an eye-tracking lexical decision task, we manipulated branching direction and whole-word familiarity in non-...

Cu(I)-Catalyzed Trideuteromethylthiolation for the Synthesis of S-Methyl- d 3 Triazoles via an Interrupted Click Reaction

Abstract Herein, we report a Cu(I)-catalyzed trideuteromethylthiolation reaction for the preparation of various S-methyl-d3 triazoles. This protocol proceeds via a Cu(I)-catalyzed azide–alkyne cycloaddition, followed by interception of the in situ-formed cuprate–triazole intermed...

From “Li (理)–Mind/Nature (心/性)” to “Qi (气)–History (史)”: The Religious Dimension of Wang Fuzhi’s Qi (气)-Centered Confucianism

Contemporary debates over whether Confucianism should be regarded as a religion are often constrained by the Western binary opposition between philosophy and religion. Rather than remaining within this classificatory framework, this article shifts attention to the question of how...

Verifying Interrupt-driven Programs Efficiently via Heuristic and Reduced Partial-order Constraints

Interrupt-driven programs are extensively utilized in embedded systems for safety-critical domains. However, uncertain interleaving executions of enabled tasks with different priorities often lead to concurrency defects. In this context, assertion violation detection is a fundame...

Data-Driven Distributionally Robust Optimization for Elective Operating Room Allocation Under Moment-Based Ambiguity Sets: Exact Reformulations and a Column Generation Approach

Allocating elective patients to operating rooms (ORs) under uncertain surgery durations and limited historical data requires balancing, opening costs against overtime risk. We develop a data-driven distributionally robust optimization model (DDRO) that jointly determines OR openi...

Observation of Magnetic‐Anisotropy Crossover and High‐Temperature Skyrmions in the Dirac Magnet Fe 3 Ge with a Distorted Kagome Lattice

ABSTRACT Topological materials that simultaneously host robust high‐temperature skyrmions and nontrivial electronic band structures have attracted tremendous interest owing to their distinctive advantages for both fundamental research and prospective technological applications. H...

Adaptive Improved Practical Finite‐Time Tracking Strategy for MIMO Stochastic Nonlinear Systems and Its Application in Flexible Robotic Manipulator

ABSTRACT This article proposes an improved command‐filtered adaptive practical fast finite‐time tracking strategy for multi‐input multi‐output (MIMO) stochastic nonlinear systems. Compared to existing approaches, it targets three critical unresolved challenges: (1) intermittent o...

AgEuPS4: Unlocking the CentrosymmetricShackle of Rare-Earth Thiophosphates via Microscopic Distortion Cascadingfor Enhanced Second-Harmonic Generation Response

Abstract Breaking the rigid centrosymmetric (CS) shackles of rare-earth thiophosphates remains a significant challenge for designing high-performance mid-to-far-infrared (MFIR) nonlinear optical (NLO) materials. Herein, using the CS LiEuPS4 (I41/acd) as the structural template, a...

Quantization‐Based Guaranteed‐Cost Control for Interval Type‐2 T‐S Fuzzy Networked Control Systems Under DoS Attacks and Fading Channels

ABSTRACT This paper investigates the guaranteed‐cost state‐feedback control problem for uncertain nonlinear networked control systems (NCSs) subject to hybrid network‐induced disturbances, including Denial‐of‐Service (DoS) attacks, fading channels, and signal quantization. An int...