期刊：
Bulletin of Engineering Geology and the Environment,2024年83(1):1-13 ISSN：1435-9529
通讯作者：
Lan, T
作者机构：
[Gao, Q. F.; Zhang, R.] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, 960 Wanjiali South Rd, Changsha 410114, Peoples R China.;[Lan, T.; Lan, T] Hunan Univ Sci & Technol, Sch Civil Engn, 2 Taoyuan Rd, Xiangtan 411201, Peoples R China.;[Zheng, J. L.] Changsha Univ Sci & Technol, Natl Engn Res Ctr Highway Maintenance Technol, 960 Wanjiali South Rd, Changsha 410114, Peoples R China.
通讯机构：
[Lan, T ] H;Hunan Univ Sci & Technol, Sch Civil Engn, 2 Taoyuan Rd, Xiangtan 411201, Peoples R China.
关键词：
Road engineering;Reinforced slope;Geogrid;Expansive soil;Field testing and monitoring
摘要：
The aim of this study is to better understand the long-term stability and reinforcement mechanism of expansive soil cut slopes repaired by geogrid reinforcement. A expansive soil slope repaired by geogrid was monitored for two years without interruption. The monitored results demonstrate that the water content of the reinforced expansive soil slope is gradually stabilized in two years after the treatment. The variation trend of geogrid strains is consistent with that of lateral earth pressures in the slope. The geogrid strain decreases with a decrease in earth pressure. When the earth pressure is stable, the geogrid strain approaches the initial value. The geogrid reinforcement is able to inhibit crack development, limit soil deformation and release soil swelling pressure, thus maintaining the long-term stability of expansive soil slope.
关键词：
Reinforced concrete ribbed arch bridge;temperature field;solar radiation;temperature gradient;three-dimensional temperature field
摘要：
Advances in Structural Engineering, Volume 27, Issue 6, Page 995-1015, April 2024. <br/>The unique structural design of an arch ring featuring varying inclination angles for individual segments causes variations in the longitudinal distribution of the temperature field d along the arch axis. This study aims to enhance the understanding of temperature fields in reinforced concrete (RC) arch bridges with diverse arch ring structural configurations during their construction phases. A comprehensive investigation into the three-dimensional distribution pattern of solar-induced temperature fields within arch ribs during the construction of RC ribbed arch bridges was conducted. A field test specifically measuring the temperature distribution across arch rib cross-sections was conducted on-site, involving an RC arch bridge constructed using the cable-stayed cantilever cast in situ method. Analyzing the monitored on-site temperature data revealed the distribution characteristics of temperature fields at the arch foot cross-section under solar radiation. By comparing these findings with international standards, a vertical temperature gradient fitting model for arch rib cross-sections under solar radiation was formulated. Drawing upon meteorological records and solar radiation principles, an adaptive numerical simulation finite element model was developed to depict the temperature field within an arch rib section. This model was rigorously verified. Subsequently, a comprehensive analysis of the three-dimensional temperature field of the arch rib under solar radiation was performed. Additionally, a three-dimensional temperature gradient fitting model was proposed, accounting for the longitudinal inclination of the bridge.
通讯机构：
[Fan, SS ] C;Changsha Univ Sci & Technol, Sch Elect & Informat Engn, Changsha 100024, Hunan, Peoples R China.
关键词：
Histograms;Lighting;Visualization;Substations;Reflectivity;Inspection;Image color analysis;Global and local enhancement;histogram equalization (HE);infrared thermal image quality improvement;Retinex;substation equipment
摘要：
Noncontact infrared detection is an effective way to diagnose substation equipment defects, but inclement weather conditions like haze and rainstorms produce low-quality infrared images, making it challenging to recognize equipment. To overcome this problem, a global and local contrast adaptive enhancement method is suggested. The global approach consists of the gray-level stretching Retinex (GLS Retinex) and the weighted truncated Gaussian histogram equalization (WTGHE). The GLS Retinex comprises gray-level stretching, fast-guide filtering, and parameter self-adjustment Retinex, which can be used to brighten dark images. The WTGHE contains Gaussian histogram calculation, truncated histogram equalization (HE), and weighted RGB fusion, aiming to handle blurred images. To significantly improve the quality of images in some detailed regions that cannot be handled by global enhancement algorithms, a local scheme called regional growth reenhancement is proposed, which includes multiseed region automatic selection and adaptive threshold growth criterion. The performance of the proposed technique is evaluated using over 1000 infrared thermal photographs of several substations under extremely difficult circumstances. The experimental results show that the novel strategy outperformed existing enhancement methods. The deep-learning detector also demonstrated the effectiveness of our proposed enhancement method for the improvement of detection precision.
关键词：
Eco-driving;Offline reinforcement learning;Conservative Q-learning;Signal phase and timing
摘要：
Eco-driving represents a promising avenue for mitigating energy consumption in road transportation. To enhance the applicability of learning-based eco-driving strategies, this study presents a novel framework that employs offline reinforcement learning in eco-driving control. This framework enables a vehicle agent to acquire eco-driving behavior by leveraging real-world human driving trajectories. Specifically, the human driving trajectories, along with the corresponding traffic signal timing scheme, obtained from empirical data, are utilized to construct a comprehensive Markov Decision Process (MDP) dataset for offline policy training. To accommodate learning from sub-optimal human-driving data, a Conservative Q-learning (CQL) algorithm is deployed. Subsequently, the proposed offline learning method is compared with alternative learning-based, model-based, and rule-based approaches, effectively illustrating the feasibility of offline learning and the efficacy of the CQL algorithm. Notably, the energy consumption is demonstrated to be improved by 67.3% compared to a behavioral car-following model, with only marginal compromise to travel efficiency. Furthermore, a sensitivity analysis is conducted, revealing the generalizability of the offline learning-based method across various simulation configurations and even diverse energy consumption models.
摘要：
The DOC (diesel oxidation catalyst), DPF (diesel particulate filter), SCR (selective catalytic reduction), and ASC (ammonia slip catalyst) are widely used in diesel exhaust after-treatment systems. The thermal management of after-treatment systems using DOC, DPF, SCR, and ASC were investigated to improve the efficiency of these devices. This paper aims to identify the challenges of this topic and seek novel methods to control the temperature. Insulation methods and catalysts decrease the energy required for thermal management, which improves the efficiency of thermal management. Thermal insulation decreases the heat loss of the exhaust gas, which can reduce the after-treatment light-off time. The DOC light-off time was reduced by 75% under adiabatic conditions. A 400 W microwave can heat the DPF to the soot oxidation temperature of 873 K at a regeneration time of 150 s. An SCR burner can decrease NOx emissions by 93.5%. Electrically heated catalysts can decrease CO, HC, and NOx emissions by 80%, 80%, and 66%, respectively. Phase-change materials can control the SCR temperature with a two-thirds reduction in NOx emissions. Pt-Pd application in the catalyst can decrease the CO light-off temperature to 113 degrees C. Approaches of catalysts can enhance the efficiency of the after-treatment systems and reduce the energy consumption of thermal management.
摘要：
The electronic properties of C2N/antimonene (Sb) van der Waals (vdW) heterostructure are investigated based on the density functional theory. The results show that the C2N/Sb vdW heterostructure behaves type-II band alignment with a direct Eg of 0.35 eV. The electronic structure can be adjusted by horizontal (vertical) strain, electric field, interlayer twist, and vertical strained-twisted cases, respectively. The horizontal strain shows a more extensive controlling range of Eg than the vertical strain, but the vertical strain adjusting shows better linear features than the horizontal strain. When applying an electric field, the maximum Eg can reach 1.4 eV with Type-I band alignment, which has potential in transistors, solar cells, Light Emitting Diode(LED), and other applications. The heterostructure keeps robust type-II band alignment with different twist angles between C2N and Sb monolayer, which contributes to efficient separation of photo-generated electron-hole pairs as photovoltaic and optical detector devices. When the vertical strain is applied on the twisted heterostructure, the band alignment, Eg, and energy states near the Fermi energy (EF) change obviously due to orbital hybridization strengthened. Our results suggest that there are various means to regulate the electronic properties of heterostructures.
摘要：
The welding of steel generates substantial welding residual stress (WRS), which exerts a significant impact on the fatigue life of steel bridges. In this study, a physical model for calculating the fatigue crack growth (FCG) life of welded specimens in the WRS field is established based on the weight function method. Experimental data validates the reliability and precision of the proposed physical model. The impact of WRS on the fatigue life of structural components is scrutinized and analyzed. On this basis, a digital twin (DT) framework driven by a physical-data model is proposed to consider the inherent parameter uncertainty in FCG behavior within the WRS domain. A dynamic Bayesian network (DBN) is used to characterize the evolution characteristics of fatigue crack states over time in the digital space. Particle filter algorithm is used as DBN inference method. The results show that the calculation of the physical model is in good agreement with the experimental values. Neglecting the influence of WRS distribution may lead to an overestimation of fatigue life in welded structures. The DT framework can update uncertain parameters online and realize the accurate prediction of the FCG life in the WRS field.
通讯机构：
[Cheng, F ] J;Jiangnan Univ, Sch Mech Engn, Wuxi 214122, Peoples R China.
关键词：
Small sample data;Multi-period-sequential-index combination;Forecasting method;Accuracy evaluation;Noise ratio
摘要：
Based on multi-period-sequential-index combination (MPSIC) technology, three forecasting methods (auto-MPSIC, IV- MPSIC, MSEI-MPSIC) were proposed for short-term prediction of small sample data. Natural gas datasets, coal datasets, electricity datasets and atmosphere datasets were separately tested by using MPSIC method, and then impact of weighting factors, forecasting accuracy analysis were carried out for MPSIC method as well as other comparative methods. The results showed that, auto-MPSIC method was partial to use statistical indicators, such as peak-to-peak, average, root mean square, to decrease prediction error, and meanwhile was also inclined to use sequential index at time of ti-1 next to ti to improve prediction accuracy. It was also concluded that: the proposed MPSIC method could achieve higher prediction accuracy compared with other methods; the robustness of auto-MPSIC method was slightly better than that of IV-MPSIC and MSEI-MPSIC under condition of noisy data, which was attributed to an adaptive weight allocation technology considering statistical distribution of forecasting errors.
摘要：
Currently, researches related to asphalt UV aging mostly based on constant-intensity UV radiation, which is not consistent with its real service condition. In this study, the variable-intensity and constant-intensity UV radiation conditions were proposed on the principle of constant total radiation. The UV-aged neat asphalt film thickness was 1 mm and 0.5 mm. The temperature sweep, frequency sweep, and multiple stress creep recovery tests were conducted to reveal the rheological properties of UV-aged neat asphalt. Moreover, the Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) tests were performed to reveal the microscopic properties of UV-aged asphalt. Regarding the constant-intensity UV-aged asphalt with 1 mm film thickness, the rutting parameter aging index (RPAI) of 9 cycles was smaller than that of RTFO-aged asphalt. The variableintensity UV aging induced a much larger aging effect than constant-intensity UV aging for UV-aged asphalt. The IS--O and IC--O under variable-intensity UV aging conditions is higher than constant-intensity UV aging for the same cycles. Besides, the asphalt thickness is an essential element affecting UV aging. The aging effect increased significantly as the film thickness decreased. SEM test results have indicated that the variable-intensity UV aging caused more microscopic morphology damage to asphalt than constant-intensity UV aging. Variableintensity UV aging test condition proposed in this study is more accurately simulate the real service conditions. It is meaningful to propose the variable-intensity UV aging process. This study provides new ideas for simulating UV aging conditions and methods in the laboratory.
摘要：
Accurate flood event simulation and prediction, enabled by effective models and reliable data, are critical for mitigating the potential risk of flood disaster. This study aims to investigate the impacts of spatiotemporal resolutions of precipitation on flood event simulation in a large-scale catchment of China. We use high-spatiotemporal-resolution Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG) products and a gauge-based product as precipitation forcing for hydrologic simulation. Three hydrological models (HBV, SWAT and DHSVM) and a data-driven model (long short-term memory (LSTM) network) are utilized for flood event simulation. Two calibration strategies are carried out, one of which targets matching of the flood events, with peak discharge exceeding 8600 m 3 s - 1 between January 2015 and December 2017, and the other one is the conventional strategy for matching the entire streamflow time series. The results indicate that the event-based calibration strategy improves the performance of flood event simulation compared with a conventional calibration strategy, except for DHSVM. Both hydrological models and LSTM yield better flood event simulation at a finer temporal resolution, especially in flood peak simulation. Furthermore, SWAT and DHSVM are less sensitive to the spatial resolutions of IMERG, while the performance of LSTM obtains improvement when degrading the spatial resolution of IMERG-L. Generally, LSTM outperforms the hydrological models in most flood events, which implies the usefulness of the deep learning algorithms for flood event simulation.
作者机构：
[Li, Chuanchang; Ma, Huan; Xie, Baoshan; Chen, Jian; Li, CC] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Key Lab Renewable Energy Elect Technol Hunan Prov, Changsha 410114, Peoples R China.;[Li, Chuanchang; Xie, Baoshan; Chen, Jian; Li, CC] Changsha Univ Sci & Technol, State Key Lab Disaster Prevent & Reduct Power Grid, Changsha 410114, Peoples R China.
通讯机构：
[Li, CC ] C;Changsha Univ Sci & Technol, Sch Energy & Power Engn, Key Lab Renewable Energy Elect Technol Hunan Prov, Changsha 410114, Peoples R China.;Changsha Univ Sci & Technol, State Key Lab Disaster Prevent & Reduct Power Grid, Changsha 410114, Peoples R China.
关键词：
thermal energy storage;phase change material;stone coal;vanadium extraction;secondary utilization
摘要：
Phase change materials (PCMs) can be incorporated with low-cost minerals to synthesize composites for thermal energy storage in building applications. Stone coal (SC) after vanadium extraction treatment shows potential for secondary utilization in composite preparation. We prepared SC-based composite PCMs with SC as a matrix, stearic acid (SA) as a PCM, and expanded graphite (EG) as an additive. The combined roasting and acid leaching treatment of raw SC was conducted to understand the effect of vanadium extraction on promoting loading capacity. Results showed that the combined treatment of roasting at 900 degrees C and leaching increased the SC loading of the composite by 6.2% by improving the specific surface area. The loading capacity and thermal conductivity of the composite obviously increased by 127% and 48.19%, respectively, due to the contribution of 3wt% EG. These data were supported by the high load of 66.69% and thermal conductivity of 0.59 W center dot m-1 center dot K-1 of the designed composite. The obtained composite exhibited a phase change temperature of 52.17 degrees C, melting latent heat of 121.5 J center dot g-1, and good chemical compatibility. The SC-based composite has prospects in building applications exploiting the secondary utilization of minerals.
期刊：
LETTERS IN DRUG DESIGN & DISCOVERY,2024年21(3):496-503 ISSN：1570-1808
通讯作者：
Huang, PM;Liu, JY
作者机构：
[Wu, Minghui; Huang, Pengmian; Liu, Xiangwei] Changsha Univ Sci & Technol, Sch Chem & Chem Engn, Changsha 410114, Peoples R China.;[Liu, Jiyong; Liu, Minhua; Zhou, Liqi] Shanghai Int Trading Co Ltd, Shanghai 200335, Peoples R China.
通讯机构：
[Huang, PM ] C;[Liu, JY ] S;Changsha Univ Sci & Technol, Sch Chem & Chem Engn, Changsha 410114, Peoples R China.;Shanghai Int Trading Co Ltd, Shanghai 200335, Peoples R China.
关键词：
Thioether and oxide sulfide-containing diamide;insecticidal activity;structure-activity relationship;cyproflanilide;chlorantraniliprole;gamma-aminobutyric acid (GABA)
摘要：
Background: With the emerging resistance to mainstream insecticides, it is necessary to develop new insecticides to tackle the problem of pest threat. Diamide insecticides are widely studied because of their broad spectrum of activities, high efficiency, and low toxicity. Most thioether and oxide sulfide-containing compounds have a wide range of biological activities in agricultural chemicals.<&wdkj&>Objective: The main purpose of the study was to explore novel thioether and oxide sulfide-containing diamide compounds possessing outstanding insecticidal activity.<&wdkj&>Methods: Based on the “active substructure replacing” method by introducing methylthio groups, 29 sulfide-containing diamide compounds were designed and synthesised. The structures of all synthetic compounds were confirmed by 1H-NMR, 13C-NMR and HRMS. Moreover, the biological activities of all the compounds were tested.<&wdkj&>Results: The preliminary bioassay indicated that most of the new compounds did not exhibit better activity than the reference insecticide cyproflanilide. However, compounds 18a and 23a showed markedly potent activity against Tetranychus cinnabarinus at 100 mg/L, which was better than cyproflanilide since these compounds possessed 2-methyl-4-cyanophenyl, which might be the reason for their better internal absorption in the plant.<&wdkj&>Conclusion: The structure-activity relationship showed that some compounds were of potential value to be developed as novel insecticides, but the majority of compounds did not show superior insecticidal activity than cyproflanilide.
关键词：
Ou, Yu-Chen;Asphalt pavement;thermal-reflective coating;Urban heat island effect;cooling effect
摘要：
Asphalt pavements are generally more susceptible to rutting under high temperatures, which can be further exacerbated by prolonged solar exposure and thermal absorption. The continuous thermal radiation from the asphalt pavement could aggravate the urban heat island effect and negatively impact urban life. To address this problem, this study was conducted to develop and evaluate a thermal-reflective coating material that minimizes thermal absorption and enhances the cooling effects of asphalt pavements. As documented herein, three pigment fillers were comparatively assessed in terms of their ability to enhance thermal reflectance, namely Hollow Glass Beads (HGB), Rutile Titanium Dioxide (RTD), and Potassium Titanate Whiskers (PTW). Acrylic resin (AR) and epoxy resin (ER) served as the base binding materials, while Polyamide acted as the curing agent. The performance of these materials was analyzed through various tests, including tensile strength, indoor cooling simulation, outdoor (field) cooling, and Differential Scanning Calorimetry (DSC)measurements. The corresponding results indicated that the optimum composition for the coating materials consist of: (1) base materials (namely 50% AR and 50% ER); (2) pigment fillers (namely 25% HGB, 20% RTD, and 15% PTW); and (3) curing agent (namely 40% Polyamide), with 2 mm as the optimum coating thickness to minimize thermal absorption.
摘要：
The controller design for integrated electrohydraulic suspension with leaf spring is a complicated and challenging task, aiming to achieve optimal dynamic performance for heavy vehicles. Considering the hysteresis property of leaf spring, parameter uncertainties and nonlinearity, a novel hierarchical optimization control strategy including upper and bottom controllers is proposed to effectively suppress the vertical vibration of vehicle body. To describe the hysteresis property of leaf spring, a novel resistor-capacitor operator hysteresis model is identified by experiment and optimized by genetic algorithm. Based on hysteresis model, the filter adaptive backstepping control with sprung mass uncertainty is designed as upper controller to generate the desired active force for electrohydraulic actuator. Then, the projection adaptive fuzzy sliding mode control is designed as bottom controller for nonlinear actuator with time-varying fluid parameter to accurately track the required target force. Additionally, a stratified sampling algorithm is investigated to optimize the parameters of hierarchical control strategy for addressing multi-objective optimization issue of electrohydraulic suspension with leaf spring. Finally, the results show that the proposed method has better robustness and effectiveness, and it can ensure ride comfort, safety and optimal performance.
摘要：
We consider the Alternating Direction Implicit (ADI) method to compute the numerical solution of a continuous Sylvester equation
$$AX+XB=C$$
, based on the recently developed inexact ADI iteration, and we propose classical acceleration techniques to enhance its convergence rate. An extrapolated variant (EADI) and a block successive overrelaxation variant (block SOR-ADI) of the ADI iterative method are described. These relaxation approaches are similar to what is used in Gauss-Seidel and Jacobi methods for linear systems, and, to our knowledge, novel, especially the block SOR-ADI scheme. Convergence properties of these two relaxed variants are analyzed when the matrix A is positive definite and the matrix B is positive semi-definite (not necessarily Hermitian matrices), or conversely. Our numerical experiments suggest that these new schemes are computationally attractive. The convergence rate of the ADI method is usually increased, particularly with the block SOR-ADI variant. A comparison with the well-known Hermitian and skew-Hermitian splitting (HSS) method emphasizes the efficiency of the proposed methods.
通讯机构：
[Hu, C ] C;Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Key Lab Rd Struct & Mat Transportat Minist, Changsha 410114, Hunan, Peoples R China.
关键词：
Red mud;Manganese slag;Compound;Grey correlation theory;Modification mechanism;Molecular simulation
摘要：
In order to promote the virtuous cycle of economic society, minimize the harm of red mud and manganese slag and maximize the efficiency of processing and utilization of red mud and manganese slag; in order to analyze the influence of red mud and manganese slag on the performance of matrix asphalt, this paper conducts multiple groups of compound proportion tests after fully mixing red mud and manganese slag, and finally determines the optimal compound proportion of 1:1.5. The red mud manganese slag compound modified asphalt binder was prepared by adding the powder-oil ratio of 0, 3%, 6%, 9%, 12%, 15%, 18%, 21% and 24% to the matrix asphalt by the external mixing method. Through the determination of three indexes of modified asphalt binder, the modification effect of different dosage on matrix asphalt is analyzed. From a large number of experimental data, it is concluded that when the mixing ratio is 15%, the three indexes of modified asphalt binder are the best. In this paper, the grey correlation theory is used to analyze the correlation between the dosage of the compound modifier and the penetration, ductility and softening point of the matrix asphalt. It is concluded that the addition of the compound modifier has the most obvious influence on the penetration at 10 degrees C, followed by the penetration at 20 degrees C, the softening point, the penetration at 25 degrees C, the penetration at 30 degrees C, the penetration at 15 degrees C, the delay at 5 degrees C and the delay at 15 degrees C. The adsorption process of red mud compound manganese slag and asphalt was qualitatively simulated by molecular dynamics theory, and the interaction energy between red mud compound manganese slag modified asphalt binder and matrix asphalt was quantitatively calculated, and the modification mechanism of modified asphalt was analyzed.
摘要：
Pigeon eggs have been used as a valuable source of high-quality proteins, which play a crucial role to regulate metabolism, immunity, and other physiological functions in humans. However, the specific composition and function of pigeon egg proteins remain underexplored. In this study, a comprehensive into the common proteome and modified proteins (phosphorylated proteins and N-glycosylated proteins) of whole pigeon eggs was carried out using proteomics. The results showed that a total of 189 proteins were identified, including 27 phosphorylated proteins (containing 90 phosphorylation modification sites) and 73 N-glycosylated proteins (containing 203 N-glycosylation modification sites). Motif analysis indicated that serine (Ser) accounted for 72.6% of the phosphorylation events, while the sequence "N-X-T" emerged as the predominant motif for N-glycosylation, representing 58.7% of such modifications. Functional enrichment analysis further demonstrated that the majority of pigeon egg proteins, modified proteins were involved in binding and catalytic activities and contributed to enzyme activity regulation and inhibition. Pigeon egg proteins were predominantly associated with the lysosomal pathway, as outlined in the KEGG database. This study could pave the way for the development of innovative food products and nutritional interventions based on pigeon egg proteins.
摘要：
Significant progress has been made in mitigating membrane biofouling by microbial quorum quenching (QQ). More efficient and survivable QQ strains need to be discovered. A new strain named Bacillus thuringiensis LZX01 was isolated in this study using a low carbon source concentration "starving" method from a membrane bioreactor (MBR). LZX01 secreted intracellular lactonase to enable QQ behavior and was capable of degrading 90% of C8-HSL (200ng/mL) within 30min, which effectively delayed biofouling by inhibiting the growth of bacteria associated with biofouling and improving the hydrophilicity of bound extracellular polymeric substances. As a result, the membrane biofouling rate of MBR adding LZX01 was four times slower than that of the control MBR. Importantly, LZX01 maintains its QQ activity even in environments contaminated with typical toxic pollutants. Therefore, with high efficiency, toxicity resistance, and easy culture, LZX01 holds great potential and significant promise for biofouling control applications.
摘要：
Here, an adaptive de‐morphing factor framework (ADFF) is proposed to restore the accomplice's facial image. A pioneering de‐morphing factor prediction network is proposed, which can better handle the variations in the degree of morphing across different images, to improve the quality of restored accomplice's facial images. Abstract Morphing attacks (MAs) pose a substantial security threat to the Automatic Border Control (ABC) system. While a few morphing attack detection (MAD) methods have been proposed, the face morphing accomplice's facial restoration has not received sufficient attention. Due to the inability to foresee the morphing factor used for a particular morphed image, selecting the appropriate de‐morphing factor becomes a challenging problem in the restoration of the accomplice's facial image. If the morphing factor cannot be chosen reasonably, achieving the desired restoration effect is difficult. Therefore, this paper presents an adaptive de‐morphing factor framework (ADFF) architecture for restoring the accomplice's facial image. By exploiting the morphed images stored in the electronic passport system and the real‐time captured criminal's images, ADFF can effectively restore the accomplice's facial image. Experimental results and analysis show that ADFF can significantly reduce the security threats of MAs on ABC.
摘要：
In human and other organisms' perception, olfaction plays a vital role, and biomimetic olfaction models offer a pathway for studying olfaction. The most optimal existing biomimetic olfaction model is the KIII model proposed by Professor Freeman; however, it still exhibits certain limitations. This study aims to address these limitations: In the feature extraction stage, it introduces adaptive histogram equalization, Gaussian filtering, and discrete cosine transform methods, effectively enhancing and extracting high-quality image features, thereby bolstering the model's recognition capabilities. To tackle the computational cost issue associated with solving the numerical solutions of neuronal dynamics equations in the KIII model, it replaces the original method with the faster Euler method, reducing time expenses while maintaining good recognition results. In the decision-making stage, several different dissimilarity metrics are compared, and the results indicate that the Spearman correlation coefficient performs best in this context. The improved KIII model is applied to a new domain of traffic sign recognition, demonstrating that it outperforms the baseline KIII model and exhibits certain advantages compared to other models.
