最新刊期
- “介绍了水库边坡稳定性研究进展，专家设计了长期浸泡与剪切次序作用下的裂隙花岗岩水岩作用试验，为库区岩质边坡长期变形稳定分析提供理论依据和实践参考。”摘要：During the operation of reservoirs, the rock mass of the reservoir bank slope is subjected to the combined effects of long-term immersion and shear sequences. The gradual development of fractures directly affects the stability of the slope. Based on this, the water–rock interaction tests on fractured granite under long-term immersion and shear sequences were designed. The shear performance and the evolution patterns and mechanisms of the fracture surface morphology of the granite are analyzed. The results show that: 1) Under the combined effects of long-term immersion and shear sequences, the fractured granite exhibits a significant degradation in shear performance. The shear stress-shear displacement curve can be divided into an elastic stage, a yield stage, and a plastic stage. 2) With increasing immersion time, the shear strength and shear strength parameters of the fractured granite show a degradation trend characterized by “first rapid then slow”. The degradation rate is the highest from 0 to 50 days, decelerates after 50 d, and stabilizes by 110 d. Moreover, the degradation trend becomes more evident with higher normal stress. 3) Long-term immersion and shear sequences effects on the shear performance of fractured granite involve deterioration mechanisms including: damage to the rock wall caused by the water-rock interaction process, damage from cutting and friction within a certain depth on both sides of the fracture surface during shearing, as well as the mutual promotion of long-term immersion and shear sequences. The relevant research findings are expected to provide a theoretical basis and practical reference for long-term deformation stability analysis of rock slopes in reservoir areas.关键词：water-rock interaction;long-term immersion;fractured rock mass;shear sequence;micro-morphology;degradation law2|0|0更新时间：2026-03-18
- “三峡库区消落带裂隙砂岩在周期性水岩作用下力学特性显著劣化，专家通过试验分析其宏观力学特性及细观孔隙率变化规律，为库岸边坡稳定性分析及长期安全评价提供理论依据。”摘要：Under the periodic rise and fall of reservoir water levels, the deterioration of fractured rock masses in the bank slope drawdown zone becomes significant, posing a serious threat to the stability of reservoir bank slopes. Taking fractured sandstone from the drawdown zone of the Three Gorges Reservoir area as the research object, periodic water-rock interaction tests were conducted to analyze the macroscopic mechanical properties and the evolution of microscopic porosity of the fractured sandstone. The results show that under periodic water-rock interaction: the uniaxial compressive strength and elastic modulus of the fractured sandstone exhibit a staged deterioration characteristic of “rapid in the early stage and gradual in the later stage”. The deterioration degree is relatively large during the first two water-rock cycles, and gradually decreases and tends to stabilize after four cycles. Significant differences exist in the deterioration magnitude of mechanical properties for fractured sandstones with different inclination angles; the largest deterioration occurs at an inclination angle of 30°, and both the deterioration magnitude and the differences among various fracture inclinations gradually decrease with increasing cycles. The crack initiation mode of the fractured sandstone with the same inclination angle remains unchanged, while the failure mode varies: at 0° and 90°, it gradually changes from tensile failure to tensile-shear composite failure; at 30°, 45°, and 60°, the degree of tensile-shear composite failure intensifies. The cumulative increase of internal pores and the weakening of cementation within sandstone are the fundamental reasons for the cumulative deterioration of its mechanical properties and the change in failure modes. The research results can provide a theoretical basis for the stability analysis and long-term safety evaluation of reservoir bank slopes in the drawdown zone.关键词：water-rock interaction;reservoir bank slope;fractured sandstone;mechanical properties;deterioration mechanism5|0|0更新时间：2026-03-17
- “智能Agent在工业自动化等领域前景广阔，但传统需求分析方法存在局限。专家提出基于问题框架的PF-IARM需求建模方法，构建扩展元模型，提炼核心问题模式，开发可视化平台，为智能Agent系统需求建模提供支持。”摘要：Intelligent Agent, as a software paradigm with autonomy, adaptability, and sociality, has demonstrated broad application prospects in industrial automation, intelligent manufacturing, and related fields. However, traditional requirements analysis methods struggle to effectively capture its uncertain behaviors, environmental perception, and autonomous decision-making characteristics. To address this problem, this paper proposes a Problem Frames-based method for Intelligent Agent Requirements Modeling (PF-IARM). Grounded in Jackson's Problem Frames theory, the method constructs an extended meta-model incorporating an Intelligent Agent domain, Environment domain, Knowledge domain, and Goal domain. Through structural of the original meta-model and the introduction of phenomenon attributes such as modal types, temporal characteristics, and probability distributions, the method enhances the expressiveness of Agent uncertainty, temporality, and learning capabilities. Building on this foundation, four core problem patterns are distilled, namely Perception-Decision-Execution, Knowledge Acquisition and Learning, Goal-Oriented Behavior, and Multi-Agent Collaboration, forming a reusable Agent requirements pattern library for industrial scenarios to support rapid requirements identification and reuse. Furthermore, a visual requirements modeling platform supporting the PF-IARM method is developed, with intuitive graphical notations and representation rules defined for each meta-model element, enabling the engineering application of the method. Case studies in industrial scenarios evaluate the method from multiple dimensions including model structure and empirical analysis. The results demonstrate that PF-IARM achieves improvements in the accuracy and completeness of requirements expression, effectively shortening the transition cycle from requirements to design and providing systematic requirements modeling support for Intelligent Agent systems.关键词：intelligent agent;requirements engineering;problem frame;meta-model;requirements modeling23|3|0更新时间：2026-03-16
- “介绍了磷石膏基道路材料性能测试及机理研究进展，专家采用煅烧高岭土等无机材料改性磷石膏基土，外掺电石渣和甲基硅酸钠，为道路材料性能优化提供解决方案。”摘要：This study investigates the modification of phosphogypsum (PG) using inorganic materials such as calcined kaolin, supplemented with the external addition of carbide slag and methyl sodium silicate, to develop a high-performance PG-based road material. Performance tests and mechanistic analyses were conducted. The results indicate that an optimal mixture (comprising 90% PG, 10% calcined kaolin, 0.1% methyl sodium silicate, and 3% carbide slag) yielded the best performance. The prepared material achieved a 28-day compressive strength of 10.27 MPa and a 28-day softening coefficient of 0.92, demonstrating excellent water stability. The expansion rate of the samples was as low as 2.0%, while the California Bearing Ratio (CBR) reached a maximum value of 7.5%, meeting the minimum requirement for subgrade fillers. Moreover, the leachate of the samples exhibited a pH value between 6.0 and 9.0, and the concentrations of total phosphorus and fluoride complied with the first-grade standards for integrated wastewater discharge. Mechanistic studies revealed that the hydration products of the PG-based road material were primarily ettringite and calcium silicate hydrate (C-S-H) gel. As hydration progressed, these gels and ettringite interconnected to form a spatial network structure, densifying the matrix and enhancing the strength of the hardened material. The formation of a hydrophobic film from organic compounds reduced the hydrophilicity of the hardened body, thereby improving water stability, inhibiting the leaching of phosphorus- and fluorine-containing substances, and enhancing the environmental compatibility of the material.关键词：phosphogypsum;road materials;calcined kaolin;modification;water stability11|1|0更新时间：2026-03-16
- “#论文摘要# 探索了溶解性有机质和磷石膏对消落带不同酸缓冲容量土壤中镉溶出及稳定的作用机制，为低酸缓冲容量镉污染土壤修复提供理论参考。”摘要：To investigate the effects and mechanisms of dissolved organic matter (DOM) and phosphogypsum (PG) on cadmium (Cd) dissolution and stabilization in soils with different acid buffering capacities from the water-level fluctuation zone, Cd-contaminated soils with contrasting acid buffering capacities (H soil: 7.30 cmol/kg; L soil: 3.12 cmol/kg) were collected from the Xiangxi River water-level-fluctuation zone. Plant-derived DOM and PG were added to examine their impacts on the physicochemical properties of overlying water, DOM characteristics, and the dissolution, re-stabilization, and bioavailability of Cd, as well as the interrelationships among these factors.The results showed that: the separate addition of DOM or phosphogypsum promoted soil Cd dissolution through complexation and adsorption; when added simultaneously, DOM could complex Cd and thereby inhibit the Cd dissolution-promoting effect of phosphogypsum induced by competitive adsorption. The separate or simultaneous addition of DOM and phosphogypsum had no significant effect on the bioavailable Cd content in the two soils; owing to the higher pH value and calcium carbonate content, the H soil had significantly stronger Cd adsorption capacity than the L soil, resulting in lower Cd enrichment in rice; in the L soil, planting rice after adding phosphogypsum and performing repeated flooding and draining could significantly reduce its Cd enrichment. This study provides theoretical support for the remediation of Cd-contaminated soils with low buffering capacity.关键词：soil acid buffering capacity;dissolved organic matte;phosphogypsum;cadmium;dissolution;stability;bioavailability31|48|0更新时间：2026-03-13
- “专家采用CFD - DEM方法构建间断级配砂砾土模型，量化揭示孔隙比对土体宏观力学性能劣化的控制机制，为库岸边坡灾变防控提供理论支撑。”摘要：Periodic reservoir water-level fluctuations easily trigger the loss of fine particles within the gravelly soil of the hydro-fluctuation belt, which can induce deep-seated deformation or even instability of bank slopes, yet the underlying mechanism is extremely complex. Focusing on this seepage-sensitive medium, this study employs a coupled computational fluid dynamics-discrete element method (CFD-DEM) approach. Models of gap-graded sandy gravel with three distinct initial fine particle contents were constructed to conduct whole-process simulations of seepage-induced suffusion and triaxial shear under varying hydraulic gradients. Based on the comparison of macro- and micro-scopic index evolution, this study specifically quantifies and reveals the controlling mechanism of the void ratio on the deterioration of the soil’s macroscopic mechanical properties. The results indicate that the cumulative erosion ratio is positively correlated with the hydraulic gradient but negatively correlated with the initial fine particle content. The loss of fine particles leads to the rupture and reorganization of strong force chains, causing a permanent increase in void ratio and permeability, thereby driving the soil microstructure toward a metastable state. Suffusion-induced pore structure damage results in soil strength degradation and dilatancy weakening, and the peak internal friction angle exhibits a significant linear negative correlation with the void ratio. However, the residual internal friction angle of various specimens is not significantly affected by suffusion. This study elucidates the macro-micro correlations between the suffusion process and strength degradation in gap-graded soils, providing theoretical support for the disaster prevention and control of reservoir bank slopes.关键词：gap-graded sandy gravel;suffusion;mechanical property deterioration;fine particle content;hydraulic gradient;CFD-DEM103|62|0更新时间：2026-03-11
- “三峡库区笔架山危岩体稳定性研究取得新进展，专家通过大规模地质勘查和数值模拟，揭示了危岩体在不同工况下的稳定性变化及崩塌演化机制，为库区岸坡安全评估和灾害防治提供了科学依据。”摘要：The slope rock mass in the Three Gorges Reservoir Area continuously deteriorates under water-rock interaction, which significantly increases the risk of failure for rock slopes. Taking the Bijiashan unstable rock mass in the Three Gorges Reservoir Area as the research object, to comprehensively evaluate the stability of the unstable rock mass and study its evolution mechanism, A detailed geological survey was conducted in the target region. Stability evaluation and collapse process simulation for a typical unstable rock unit were performed using finite element software and PFC (Particle Flow Code). The main findings were as follows: 1) the Bijiashan unstable rock mass comprised 159 individual units distributed across 10 steep cliff zones, with a total volume of about 213.55×104 m3; 2) for the typical WD6-6 section, the FOS (Factor of Safety) was 1.475 under natural conditions and decreased to 1.325 under rainstorm conditions, indicating that rainfall infiltration significantly weakened the overall stability of unstable rock mass. The deformation, stress, and strain distributions remained largely consistent under both conditions; 3) during the collapse process of WD6-6 unstable rock mass, internal cracks progressively developed and connected, the rock mass’s center of gravity shifted toward the free surface, and the base showed a tendency toward buckling failure.关键词：Three Gorges Reservoir Area;unstable rock collapse;stability evaluation;strength reduction method;PFC17|17|0更新时间：2026-03-10
- 摘要：Existing coverage-guided fuzzing tools in intelligent unmanned systems face issues such as efficiency degradation and uncontrollable states. To address this problem, this paper selects the PX4 open-source unmanned system as the research object. Firstly, it analyzes three core causes of performance degradation in fuzzing: asynchronous thread execution, internal and external signal interference, and spatiotemporal state residue. Based on these three core causes, targeted mitigation mechanisms are designed, including forced synchronization, message filtering, time variable substitution and improved selective instrumentation, to generate test-specific firmware. Additionally, a fuzzing framework for intelligent unmanned systems, IUSFUZZ, is constructed. Compared with the mainstream fuzzy fuzzing tool AFL++, IUSFUZZ has improved stability by 16.5 percentage points. To discover the same vulnerabilities, AFL++ requires 7.5 times longer time than IUSFUZZ, IUSFUZZ successfully uncovering a zero-day vulnerability triggered through a network channel and obtaining a CVE number.关键词：IUS(Intelligent Unmanned System);vulnerability detection;fuzzing;firmware security42|95|0更新时间：2026-02-25
- “介绍了其在二维范德华铁电材料领域的研究进展，专家利用压电响应力显微镜与极化分辨二次谐波显微镜，协同表征了CuInP2S6纳米片的铁电畴分布及非线性光学响应特性，并与理论计算结果进行对比分析，为相关研究开辟了新方向。”摘要：The relationship between ferroelectric domains and nonlinear optical responses in two-dimensional van der Waals ferroelectric materials is investigated through theoretical calculations and experimental characterization. Using piezoresponse force microscopy (PFM) and polarization-resolved second-harmonic generation (SHG) microscopy, we synergistically characterized the ferroelectric domain distribution and nonlinear optical response characteristics in CuInP2S6 (CIPS) nanosheets, followed by comparative analysis with theoretical calculation results. The study reveals non-Ising-type domain walls in CIPS and demonstrates significant modulation of SHG responses by the spatial distribution of ferroelectric domains. In domains with uniform polarization direction, the SHG polarization patterns closely match theoretical predictions, showing ordered alignment of electric dipoles along specific in-plane crystal axes ([100] direction). Conversely, structural disorder in domain arrangements leads to attenuated SHG intensity and reduced anisotropy, indicating enhanced local disorder in dipole alignment.关键词：2D vdW (two-dimensional van der Waals) ferroelectric materials;second-harmonic generation;ferroelectric domains;non-Ising-type domain walls;CuInP2S613|71|0更新时间：2026-02-13
-
Optimized Design of a Daytime Radiative Cooling Device with a Refractive Index Gradient Structure AI导读
“专家提出新型日间辐射制冷器件，基于折射率梯度渐变结构，优化性能，为制冷领域提供新方案。”摘要：A daytime radiative cooling device with a refractive index gradient structure was designed to overcome the limitations of thickness, fabrication complexity, and environmental sensitivity in existing devices. The structure combines a silver substrate and a silica refractive index gradient layer. The performance is optimized by modulating parameters such as refractive index gradient distribution, structure thickness, and substrate material. Simulation analysis was carried out using FDTD, the simulation and theoretical analysis showed that with a non-radiative heat absorption coefficient q of 2 W·m-2·°C-1, and a refractive index variation exponent κ of 1.5, the device achieved a daytime radiative cooling temperature of 18.3 °C and a cooling power of 110.9 W·m-2. When the incident light angle is within the range of 0° to 60°, the device exhibits stable cooling temperature and cooling power performance. Further research found that when κ increased from 0 to 1.5, the cooling temperature of the device increased by 2.5 °C. And the radiative-cooling performance of the device has good robustness to changes in structural size and morphology. Based on this, experimental silver emerges as an ideal substrate material that balances performance and cost due to its high reflectivity and low solar energy absorption rate.关键词：passive radiative cooling;daytime radiative cooling;ultra-thin device thickness;refractive index gradient structure30|95|0更新时间：2026-02-10 - “介绍了其在钓鱼网站检测领域的研究进展，相关专家提出了一种基于钓鱼工具包指纹识别的检测方法，为解决现有检测方法依赖人工部署且准确率低的问题提供了高效解决方案。”摘要：A phishing toolkit is a collection of code resources widely used for the rapid, bulk deployment of phishing websites. By identifying the specific toolkit used by a phishing website, one can efficiently detect other sites deployed using the same toolkit, supporting precise detection and attribution analysis of phishing websites. However, existing methods mostly rely on manual deployment of toolkits and suffer from low accuracy. To address these issues, this paper proposes a phishing website detection method based on phishing toolkit fingerprinting. This method extracts fingerprints of the toolkit from its directory structure, text, and resources without the need for deployment, and employs different methods to calculate fingerprint similarity. Comparing the proposed method with three baseline methods, experiments demonstrate that without deploying the toolkit, the proposed method achieves a phishing website detection accuracy of 99.5%, which is comparable to the best baseline method. Furthermore, it achieves a phishing toolkit identification accuracy of 80.5% (an improvement of 26.2 percentage points over the best baseline) and a phishing toolkit family identification accuracy of 85.4% (an improvement of 8.6 percentage points). Ablation experiments show that the directory structure fingerprint is the core component, while text and resource fingerprints provide effective complementarity; fusing all three significantly improves the performance of toolkit and family identification.关键词：phishing website;phishing toolkit;fingerprint;similarity;tree edit distance;perceptual hash18|77|0更新时间：2026-02-05
- “三峡库区地质灾害防治研究取得新进展，专家构建了空天地内立体感知监测体系，建立基于数字孪生的智能决策支持体系，研发绿色韧性协同工程防治体系，为提升三峡库区地质灾害防治能力与推动长江经济带高质量发展提供有力支撑。”摘要：Geological hazards in the Three Gorges Reservoir Area are influenced by the combined effects of regional geological structures, topography and geomorphology, stratigraphic lithology, reservoir operation, and engineering disturbances, resulting in highly complex hazard types and posing long-term and systemic challenges to geological hazard prevention and risk control. Focusing on three typical geological hazards in the reservoir area—bank collapse, landslide, and rockfall—this study systematically summarizes the main controlling factors and corresponding engineering mitigation measures. It further elaborates on the technological advances of the regional prevention-control system in terms of monitoring, decision support, and engineering prevention and control. On this basis, future development directions are proposed, including the construction of a space-sky-ground-interior stereoscopic monitoring system, the establishment of a digital-twin-based intelligent decision-support system, and the development of green and resilient synergistic engineering prevention-control technologies, to jointly support the modernization of geological hazard prevention and control in the Three Gorges Reservoir Area and promote the high-quality development of the Yangtze River Economic Belt.关键词：Three Gorges Reservoir Area;disaster prevention and control;prevention–control system;green resilience;digital twin;artificial intelligence143|186|0更新时间：2026-02-05
- “聚焦中亚五国生长季干旱，专家构建陆-气水平衡框架溯源水汽输送，揭示干旱期间水汽亏缺关键因素及主导物理驱动因子，为应对干旱提供科学依据。”摘要：The five Central Asian countries have long suffered from drought disasters, with severe water scarcity. In particular, droughts occurring during the growing season (April—June) pose severe threats to local ecosystems and economic development. Based on reanalysis data from 1961 to 2022, four typical growing-season drought events (in 1975, 1977, 2012, and 2021) in the five Central Asia countries were identified. By constructing a land–atmosphere water balance framework, tracing moisture transport using the HYSPLIT model, and applying a moisture budget decomposition method. This study systematically analyzes the anomalous moisture transport and source regions responsible for atmospheric moisture deficits during growing-season droughts, and evaluate the dominant physical driving processes. The results show that: 1) During growing-season droughts in the five Central Asian countries, the marked reduction in precipitation contributed by advected moisture emerges as the primary cause of rainfall deficiency, while diminished precipitation contributed by evaporative recycling further intensifies drought severity. 2) Moisture deficits associated with air parcels originating from the Mediterranean region (in 1975, 2012, and 2021) or from northern Europe and the North Atlantic (in 1977) are key factors leading to atmospheric moisture shortages during growing-season droughts. Specifically, in terms of moisture sources, the contributions from the Caspian Sea and Turkmenistan decreased substantially. 3) The moisture transport during growing-season droughts is mainly influenced by changes in stationary vortices. The dynamic effects induced by wind changes (especially divergent dynamic effects) lead to negative anomalies in the moisture budget and dominate the atmospheric moisture deficit over the five Central Asian countries.关键词：five Central Asian countries;growing-season drought;moisture budget;moisture transport;dynamic mechanism;thermodynamic mechanism33|86|0更新时间：2026-02-04
- “深度神经网络在计算机视觉领域广泛应用，但对抗扰动使其鲁棒性不足。专家提出U-Purify框架，包含扰动擦除和特征恢复模块，设计3种通用对抗净化方法，有效剔除对抗扰动，保持图像良性特征，还提出净化效率指标，实验表明U-Purify显著提高分类模型准确率和净化效率，为模型安全性提供解决方案。”摘要：In recent years, deep neural networks have been widely applied in the field of computer vision, achieving remarkable performance in tasks such as image recognition and object detection. However, these models are highly susceptible to adversarial perturbations deliberately crafted to mislead predictions, revealing critical robustness vulnerabilities and posing serious security challenges. The paper focuses on adversarial purification and proposes a general purification framework named U-Purify, which comprises two key modules: perturbation erasure and feature reconstruction. Based on the complexity of real-world scenarios, three universal adversarial purification methods with different levels of granularity are designed: 1) U-Purify(M), based on random pixel dropping and matrix completion, which performs purification using local pixel information and requires relatively low computational resources; 2) U-Purify(D), based on wavelet filtering and deep image prior, which leverages texture-level features for purification with moderate computational cost; 3) U-Purify(S), based on downsampling–upsampling and stable diffusion models, which utilizes global semantic information to achieve high-quality purification at a higher computational cost. The proposed approach is model-agnostic and dataset-agnostic, capable of effectively eliminating adversarial perturbation from input images while preserving as much of the original benign features of the image as possible. Furthermore, a new performance evaluation metric—Purification Efficiency—is introduced to assess the method’s ability to defend against adversarial attacks while accurately recognizing benign examples. Experimental results demonstrate that U-Purify, even without prior knowledge, significantly improves standard accuracy, robust accuracy and purification efficiency of classification models. On the Flowers-102 dataset, against the strongest AutoAttack, U-Purify(S) achieved a robust accuracy 6.37 percentage points higher than GDMP and 8.09 percentage points higher than Diffpure. Compared to traditional image preprocessing methods, it achieves a 62.50 percentage point improvement. Its purification efficiency surpasses the best-performing comparison method (Diffpure) by 3.70 percentage points, demonstrating excellent overall performance.关键词：deep neural network;image classification;adversarial purification;adversarial example32|118|0更新时间：2026-01-30
- “在环境科学领域，专家构建了水-土-气三相耦合模型，探究了消落带中活性氧物种的时空动态特征和主控因素，为认识消落带中活性氧物种的环境效应提供了理论依据。”摘要：The hydro-fluctuation belt is characterized by dynamic aerobic/anaerobic alternations, and it acts as a hotspot for reactive oxygen species (ROS) generation. However, the mechanism underlying vertical ROS production induced by oxygen supply from the vadose zone remains unclear. To depict this pattern, we conducted a series of saturated-unsaturated soil column experiments and developed a coupled water-soil-air three-phase model to investigate the spatiotemporal dynamics of ROS. With vertical oxygen supply from atmosphere, ROS distribution exhibited the pattern of surface enrichment, sharp decrease with increasing depth, and gradual accumulation over time. When oxygen was vertically suppled by surface water infiltration, ROS distribution was synchronized with the infiltration front of the water flow. Model sensitivity analysis reveals that ROS production is primarily governed by two key factors: reaction rate of solid electron-donating capacity (EDC) with dissolved oxygen （DO） and DO supply intensity. The results of this study provide the basis for understanding the spatiotemporal dynamics of ROS and associated environmental impacts in riparian zones under different conditions.关键词：riparian zones;oxygen;reactive oxygen species;column experiment;numerical simulation38|121|0更新时间：2026-01-23
- “最新研究发现，PVFT/PWH/MoS2复合薄膜具有优异压电性能和抗菌功能，有望在感染性组织修复治疗中应用。”摘要：The introduction of biologically active high-temperature annealed whitlockite (PWH) nanoparticles and MoS2 nanosheets to modify poly(vinylidene fluoride-trifluoroethylene) (PVFT) films has led to the development of a PVFT/PWH/MoS2 composite film with excellent piezoelectric performance and antibacterial function. Composite films with different MoS2 contents were prepared by the casting method, and their structures were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), etc. Their piezoelectric responses, mechanical properties and biocompatibility were systematically tested. The results show that appropriate doping of MoS2 significantly promotes formation of the β phase in PVFT and enhances its electrical performance, with the piezoelectric coefficient, output voltage and surface potential reaching 24.8 pC/N, 2.33 V and -87.42 mV respectively; meanwhile, it endows it with excellent antibacterial performance, with an antibacterial rate of over 75%. The composite films exhibited a tensile strength of 148.67 MPa and a hemolysis rate below 5%, meeting the requirements for tissue repair applications. This research provides a novel strategy for designing multifunctional tissue repair materials, demonstrating significant potential for infected tissue regeneration therapies.关键词：piezoelectric film;poly(vinylidene fluoride-trifluoroethylene) (PVFT);whitlockite (WH);molybdenum disulfide (MoS2)52|109|0更新时间：2026-01-21
- “在量子信息领域，研究者基于腔辅助光力交叉科尔非线性效应，提出了两量子比特Werner态并发度的直接测量方案，为声子纠缠态度量问题提供新方法。”摘要：To address the problem that phononic entanglement is difficult to quantify, this paper, based on the cavity-assisted optomechanical cross-Kerr nonlinearity, by correlating the single-photon detection probabilities obtained from multiple measurements at the output ports of an interferometer with the concurrence of the phononic entangled state, proposes direct measurement scheme for the concurrence of two-qubit Werner state. The existing single-copy direct measurement scheme requires only a single copy of the initial Werner state per measurement, yet it relies on prior knowledge of the coefficients. In this work, we propose a multi-copy direct measurement scheme that does not require knowledge of the coefficients α and β. Although this scheme requires multiple copies of the initial Werner state per measurement, it offers better universality. The scheme proposed in this paper do not involve complex Controlled-NOT (CNOT) gate operations. Theoretical analysis shows that the proposed scheme exhibit reliable performance under experimentally achievable conditions in the current research field.关键词：entanglement measurement;Werner state;phonon;optomechanical system30|77|0更新时间：2026-01-19
-
Graph Incremental Learning Fault Diagnosis Method Based On Horizontal Visibility Adjacency Matrix AI导读
“在非欧氏工业数据建模领域，专家提出了基于水平可见邻接矩阵的图增量学习故障诊断方法，有效提升了诊断精度和模型适应性。”摘要：Graph Neural Networks (GNNs) have been widely adopted for non-Euclidean industrial data modeling. However, traditional methods relying on global adjacency matrices often fail to capture localized topological features of individual samples. Moreover, their offline operation neglects valuable information from newly collected data, limiting diagnostic accuracy. To address these challenges, this paper proposes an incremental graph learning framework for fault diagnosis based on horizontal visibility adjacency matrices (HVAMs). First, the visibility criterion is applied to preserve intrinsic fluctuation patterns of raw signals, generating HVAMs that precisely encode local topological structures. Second, a Q-learning-based incremental learning framework is designed, integrating category-aware elastic loss weighting to dynamically select high-value incremental samples. This strategy balances class distributions and optimizes training sequences. Finally, a collaborative update mechanism is established, combining gradient sensitivity propagation with topology-preserving regularization, which enhances model adaptability to online scenarios. Experiments on the TE benchmark and coal mill datasets demonstrate that our method significantly improves incremental learning performance with streaming data, achieving higher diagnostic accuracy. The results validate its robustness in complex industrial environments.关键词：fault diagnosis;horizontal visibility adjacency matrix;incremental reinforcement learning;GCN（Graph Neural Network）23|36|0更新时间：2026-01-16 - “在新能源接入电网领域，专家提出了改进SOGI-PLL结构，有效提升电网同步检测精度，为电网稳定性研究提供新方向。”摘要：The high proportion of new energy integration complicates the working conditions of the power grid, leading to insufficient output accuracy of the second-order generalized integrator (SOGI) phase-locked loop. This article proposes an improved frequency adaptive phase-locked loop structure for SOGI. Firstly, an amplitude compensation branch is introduced to compensate for the tracking of the fundamental frequency signal by SOGI, ensuring the accuracy of the orthogonal signal output by SOGI under frequency fluctuation conditions. Secondly, by connecting two adaptive SOGI modules in series, the insufficient ability to suppress low order harmonics and DC components has been improved. Finally, the positive and negative sequence separation method of orthogonal signals is introduced to accurately extract the positive sequence synchronization signal of the power grid voltage and eliminate the influence of unbalanced components on the phase-locked loop. The comparative experiment with the classic SOGI-PLL method shows that the proposed phase-locked loop structure effectively improves the accuracy of power grid synchronization detection under complex working conditions such as harmonic components, unbalanced components, and frequency fluctuations. It can complete frequency detection within 30 ms, and the detected fundamental frequency positive sequence voltage has higher sinuosity and harmonic distortion rate within 0.5%.关键词：phase-locked loop;second-order generalized integrator;pre filtering;frequency adaptation;harmonic distortion25|53|0更新时间：2026-01-14
- “最新研究提出了基于知识图谱的迭代改写RAG方法，有效提升了复杂多跳问答的推理能力，为解决幻觉问题提供新方案。”摘要：Retrieval-Augmented Generation (RAG) methods have attracted widespread attention since their proposal, with the core goal of enhancing large language models’ (LLMs) reasoning capabilities by incorporating external information to effectively mitigate hallucination. However, RAG approaches face challenges in complex multi-hop question answering, including incomplete information retrieval in a single pass and error propagation caused by redundant interference during iteration. To address these issues, we propose a Knowledge Graph-based Iterative Rewriting RAG method (KGIR-RAG), which constructs evidence subgraphs to filter structured knowledge from retrieved passages and utilizes a maximum spanning tree algorithm to eliminate noisy triplets. It iteratively rewrites queries by replacing multi-hop dependencies in questions with factual relations from the knowledge graph, progressively reducing reasoning complexity. Finally, a reflection-based reasoning module evaluates answer completeness to drive iteration termination. We conducted experiments on the HotpotQA and MuSiQue datasets to validate the effectiveness of each module. The results demonstrate that KGIR-RAG outperforms several recently proposed methods in both generation and retrieval performance.关键词：large language model;retrieval augmented generation;knowledge graph;iterative rewriting62|80|0更新时间：2026-01-09
- Tel：027-68756952 Email：whdz@whu.edu.cn
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
- Total Visits：1358948 Visits Today：88
Bulk Citation
0