作者机构：
[Xinsheng Wang; Jifeng Luo; Shizhong Wei] Hennan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou, 430002, China;[Yang Li; Yueyang Yu] National-Local Joint Engineering Laboratory of Intelligent Manufacturing Oriented Automobile Die & Mould, Tianjin University of Technology and Education, Tianjin, 300222, China;[Yonggang Tong] College of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha, 410114, China;[Honglin Mou; Zhihai Cai; Zhiguo Xing] National Engineering Research Center for Remanufacturing Academy of Armored Forces Engineering, Beijing, 100072, China
通讯机构：
[Zhihai Cai] N;National Engineering Research Center for Remanufacturing Academy of Armored Forces Engineering, Beijing, 100072, China
摘要：
Titanium alloy is an essential material for preparing aerospace engines because of its excellent performance. However, the poor wear resistance of titanium alloy restricts its further development as a critical engine material. This study aimed to use laser cladding and particle enhancement technologies to enhance the surface wear resistance of titanium alloy. (NiCoCr)94Al3Ti3+hBN, (NiCoCr)94Al3Ti3+cBN, and (NiCoCr)94Al3Ti3+hBN + cBN were prepared on the surface of titanium alloy, and the wear resistance mechanism of single-phase self-lubricating particles, single-phase hard particles, and self-lubricating and hard biphasic particles was investigated. The results showed that the microhardness of the biphase-reinforced coating was 1083.8 HV0.5, which was higher than that of the self-lubricating particle-reinforced coating and hard-particle-reinforced coating by 368.4 HV0.5 and 149.8 HV0.5, respectively. The friction coefficient of the biphase-reinforced coating was 0.4208, which was lower than that of the self-lubricating particle-reinforced coating and hard-particle-reinforced coating by 0.0224 and 0.0686, respectively. The wear rate of the biphase-reinforced coating was 0.076 mm3/NM, and the wear resistance of the biphase-reinforced coating was 3.42 and 1.37 times that of the self-lubricating particle-reinforced coating and hard-particle-reinforced coating, respectively. hBN relied on its own decomposition to promote the coating to present a layered unstable structure to achieve a wear reduction effect, cBN relied on its own hardness to resist wear and played a wear-resistant role, whereas biphase-reinforced coating had a hard wear resistance and formed a lubricating film to enhance the wear resistance of the coating. The comprehensive performance of the dual-phase wear-resistant coating reinforced by hard particles and self-lubricating particles was better than that of single-phase wear-resistant coating, providing a reference for developing wear-resistant coating integrating hardness and self-lubrication.
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：
High-temperature titanium alloys' thermal stability and creep resistance are significant during service in high temperatures. This study systematically investigated the thermal stability and mechanical properties of Ti-6.5A1-2.5Sn-9Zr-0.5Mo-1Nb-1W-0.3Si- x Sc ( x , 0-0.5 wt.%) at 650 degrees C. The lamellar secondary alpha phase is refined and the formation of Sc2 O3 is increased with the increasing scandium ( Sc ) additions, which improves the strength of the alloy, while excessive Sc2 O3 becomes the crack source and deteriorates the plasticity. The oxygen content in the matrix is reduced by the interaction between Sc and oxygen, inhibiting the growth of the Ti3 Al phase and improving the thermal stability of the alloy. Meanwhile, Sc accelerates the dissolution of the residual ,B phase and precipitation of fine, diffusely distributed ellipsoidal silicides, which strongly prevents dislocation movement. The enhancement of creep resistance for the Sc -containing alloy is attributed to the refined lamellar secondary alpha phases, Sc2 O3 particles, Ti3 Al phase, and silicides, especially the precipitated silicides. Eventually, the 0.3Sc alloy shows optimal thermal stability (the plasticity loss rate 17.3%) and creep resistance (steady-state creep rate 4.4 x 10-7 s-1 ). The investigation results provide new insights into the mechanism and thermal stability improvement in high-temperature titanium alloys modified by rare earth (RE).(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
作者：
Zhao, Wensheng;Fang, Guotao;Qin, Xiao;Mao, Jie
期刊：
REVIEWS ON ADVANCED MATERIALS SCIENCE,2024年63(1) ISSN：1606-5131
通讯作者：
Qin, X
作者机构：
[Zhao, Wensheng] Changsha Univ Sci & Technol, Natl Engn Res Ctr Highway Maintenance Technol, Changsha 410114, Peoples R China.;[Qin, Xiao; Qin, X] Foshan Univ, Sch Transportat & Civil Engn & Architecture, Foshan 528000, Peoples R China.;[Zhao, Wensheng] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Peoples R China.;[Fang, Guotao] Guangzhou HuaHui Traff Technol Co Ltd, Guangzhou 510335, Peoples R China.;[Mao, Jie] Guangdong GuanYue Highway & Bridge Co Ltd, Engn Dept, Guangzhou 511450, Peoples R China.
通讯机构：
[Qin, X ] F;Foshan Univ, Sch Transportat & Civil Engn & Architecture, Foshan 528000, Peoples R China.
关键词：
asphalt;UV aging;characterization
摘要：
To clarify the effect and mechanism of hindered amine light stabilizer (HALS) on the UV aging behavior of asphalt binder, T622-HALS was selected as the modifier for UV aging resistance of asphalt. The physicochemical properties and microstructure of T622 light stabilizer were comprehensively analyzed. The light stabilizer-modified asphalt was prepared and placed in the UV radiation chamber for UV aging treatment. Scanning electron microscope and atomic force microscope were used to analyze the microscopic morphology evolution of light stabilizer-modified asphalt induced by UV radiation. The thermal properties and functional group composition changes in light stabilizer-modified asphalt during UV aging were studied by using the thermogravimetric and infrared spectroscopy combined testing system. The decay laws of the physical and rheological performances of light stabilizer-modified asphalt were studied during UV aging process, and the effect of light stabilizer on the UV aging behavior of asphalt binder was clarified. The research results indicated that HALSs could alleviate the microcracks and roughness change on the surface of asphalt and reduce the content of functional groups such as carbonyl and sulfoxide in asphalt. Furthermore, HALS could reduce the value difference of physical and rheological properties of asphalt before and after UV aging, significantly improving the UV aging resistance of asphalt binder.
摘要：
We investigate the transmission properties of super-Gaussian pulses at a moving temporal boundary. The incident spectrum of super-Gaussian pulses, determined by different shape parameters, affects the reflected and transmitted pulse energy and the sidelobes distribution after crossing the temporal boundary. When the incident pulse is an initial unchirped super-Gaussian pulse or a super-Gaussian pulse with a small chirp parameter, the reflected pulse energy increases and the transmitted pulse energy decreases as the incident pulse shape parameter increases. When the incident pulse with a initial chirp and |C| >= 2, the incident pulse spectrum mainlobe energy increases as the shape parameter increases, resulting in reflected pulse energy decreases and transmitted pulse energy increases. This study also discusses the pulse splitting occurs in the anomalous dispersion region. The super-Gaussian pulse sidelobes can theoretically be removed by creating two temporal boundaries.
摘要：
The media plays an important role in detecting corporate financial fraud. However, little systematic research exists on the impact of media reports on corporate fraud detection; thus, our understanding of the impact is limited. Therefore, we are committed to determining how the configuration of different media report content systematically detects corporate fraud by logistical regression, grounded theory and qualitative comparative analysis (QCA). First, the media reports are classified into three major categories and 35 subclasses to determine their features through fraud triangle theory and grounded theory. Then, based on a dataset of 110 fraudulent listed companies and 110 matched listed companies from 2010 to 2020, three major features comprising 10 subclasses are identified by the logistical regression method. The causal configurations of the features of media reports that detect corporate fraud are explored using the QCA method. The results show that five particular associations can interpret corporate fraud revelation by meeting the equifinality and asymmetric causality principles. Finally, the combined model is proposed. Through 56 fraudulent listed companies and 56 matched listed companies from 2021 to 2022, the combined model is proven to be most effective in detecting corporate fraud. In summary, we offer theoretical contributions to corporate fraud detection and empirical experiences for corporate managers and regulators.
期刊：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY,2024年84:102641 ISSN：0364-5916
通讯作者：
Xin, JH;Liss, KD
作者机构：
[Yin, Chongshan; Li, Xi; Zhang, Wei -Bing; Luo, Minsi; Zhu, Ruixiang] Changsha Univ Sci & Technol, Hunan Prov Key Lab Flexible Elect Mat Genome Engn, Changsha 410004, Peoples R China.;[Xin, Jinghua; Xin, JH] MOT, Tianjin Res Inst Water Transport Engn, Safety Energy Conservat & Emergency Technol Res Ct, Tianjin 300000, Peoples R China.;[Shang, Shun -Li; Liu, Zi-Kui] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.;[Funakoshi, Ken-Ichi] Comprehens Res Org Sci & Soc, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan.;[Reid, Mark; Liss, Klaus -Dieter; Liss, KD; Dippenaar, Rian Johannes] Univ Wollongong, Sch Mech Mat Mechatron & Biomed Engn, Northfields Ave, Wollongong, NSW 2522, Australia.
通讯机构：
[Liss, KD ] U;[Xin, JH ] M;MOT, Tianjin Res Inst Water Transport Engn, Safety Energy Conservat & Emergency Technol Res Ct, Tianjin 300000, Peoples R China.;Univ Wollongong, Sch Mech Mat Mechatron & Biomed Engn, Northfields Ave, Wollongong, NSW 2522, Australia.
关键词：
Equation of state;Ti-Al alloys;High-pressure;Synchrotron radiation
摘要：
The phase transformations and pressure -volume dependencies of the Ti-45Al alloy with respect to pressure have been investigated by means of in -situ observation using multi anvil -type high-pressure devices and synchrotron radiation. Under hydrostatic compression from 0 to 10.1 GPa, about 2.3 vol % of gamma transforms continuously to alpha 2. Lattice parameters as well as volume fractions of these two phases have been determined as functions of pressure. Bulk moduli estimated using Birch-Murnaghan's equation of state are 146.2 GPa for the gamma phase, 136.7 GPa for the alpha 2 phase, and 145.6 GPa for their two-phase mixture of Ti-45Al alloy. First -principles have also applied to investigate bulk moduli of two single phases, and the deviation between calculations and measurements is discussed and attributed to mainly phase transformation. The present study provides useful insights into thermodynamics of alpha 2 and gamma phases under high pressure.
期刊：
Developments in the Built Environment,2024年17:100329 ISSN：2666-1659
通讯作者：
Liu, X
作者机构：
[Peng, Jun Long; Liu, Xiao] Changsha Univ Sci & Technol, Chang Sha City, Peoples R China.
通讯机构：
[Liu, X ] C;Changsha Univ Sci & Technol, Chang Sha City, Peoples R China.
关键词：
Emergency construction project management;Resource scheduling;Multi-space;Analysis of influencing factors;Fuzzy-DEMATEL-ISM
摘要：
In response to the growing frequency of international emergencies, the demand for resources dedicated to emergency construction projects has significantly increased due to their pivotal role in disaster containment and mitigation. This article examines the factors influencing the allocation of multi-spatial resources for such projects, conducting both causal and hierarchical analyses to unveil their interdependent mechanisms. It addresses a theoretical research gap in resource scheduling through bibliometric analysis. The study utilizes the Fuzzy Decision-Making Laboratory Analysis (Fuzzy-DEMATEL) method to identify key factors within the system and constructs a hierarchical model using Interpretive Structural Modeling (ISM) to systematically analyze the factors affecting multi-space resource allocation in emergency construction projects. The results reveal 43 influencing factors, categorized into 11 levels, with the political and social environment, resource scheduling determination, and design changes standing out as the primary influencers. Additionally, the article proposes a three-tiered strategy based on experimental results to offer theoretical insights for multi-spatial resource scheduling in emergency construction projects.
通讯机构：
[Dai, YM ] C;Changsha Univ Sci & Technol, Sch Chem & Chem Engn, Hunan Prov Key Lab Mat Protect Elect Power & Tranp, Hunan Prov Key Lab Cytochem, Changsha 410114, Peoples R China.
摘要：
Developing a green adsorbent to deal with Congo red dyes from wastewater was a significative exploration. In the work, we prepared an ionic liquid modified magnetic cellulose/sepiolite composite FSCS-cl-p(MBA-co-BVI) via a simple method, the process including the magnetic sepiolite/cellulose complex grafting the polymer of MBA and BVI. The high specific surface area of sepiolite and cellulose, the electropositivity of ionic liquids [Bvim][Br] and magnetic response of Fe3O4@SiO2 nanoparticles jointly promoted the adsorption performance of adsorbents. The composites were characterized by SEM, XRD, EDS, FTIR, BET, TGA and VSM, the adsorption performances were evaluated containing the influence factors, adsorption kinetics, isotherm and thermodynamics. In brief, the adsorbents were suitable within the pH range of 3-9 and reach adsorption equilibrium during 120 min. Meanwhile, the maximum adsorption capacity for CR was up to 1374.10 mg/g at 45 celcius. Furthermore, the adsorption kinetics and isotherm models were well-fitted to pseudo-second-order model and Langmuir isotherm model, respectively. The adsorption mechanisms of FSCS-cl-p(MBA-co-BVI) for CR could be interpreted as electrostatic attraction, hydrogen bonding and pi-pi stacking interaction. Based on results, the as-obtained adsorbents were effective, inexpensive and expected to be applied to the treatment of dyestuff.
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.
作者机构：
[Li, Chuangchuang; Lei, Yanli; Sun, Haiyan] Changsha University of Science and Technology, Hunan Provincial Key Laboratory of Cytochemistry, School of Food and Bioengineering, CHINA;[Ji, Xinyue] Changsha University of Science and Technology, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, CHINA;[Liu, Xiaowen; Mao, Zenghui] Changsha Hospital for Maternal & Child Health Care, Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, CHINA;[Chen, Weiju] Changsha University of Science and Technology, Hunan Provincial Key Laboratory of Cytochemistry,School of Chemistry and Chemical Engineering, CHINA;[Qing, Zhihe] Changsha University of Science and Technology, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, 296 Wanjiali South Road, 410114, Changsha, CHINA
关键词：
Biosensing;Cell capture and release;Entropic barriers;Physiological pH;Triplex DNA switch
摘要：
Triplex DNA switches are attractive allosteric tools for engineering smart nanodevices, but their poor triplex-forming capacity at physiological conditions limited the practical applications. To address this challenge, we proposed a low-entropy barrier design to facilitate triplex formation by introducing a hairpin duplex linker into the triplex motif, and the resulting triplex switch was termed as CTNSds. Compared to the conventional clamp-like triplex switch, CTNSdsincreased the triplex-forming ratio from 30% to 91% at pH 7.4 and stabilized the triple-helix structure in FBS and cell lysate. CTNSdswas also less sensitive to free-energy disturbances, such as lengthening linkers or mismatches in the triple-helix stem. The CTNSdsdesign was utilized to reversibly isolate CTCs from whole blood, achieving high capture efficiencies (>86%) at pH 7.4 and release efficiencies (>80%) at pH 8.0. Our approach broadens the potential applications of DNA switches-based switchable nanodevices, showing great promise in biosensing and biomedicine.
摘要：
Vanadium redox flow batteries (VRFBs) are promising energy storage systems with the potential to bridge the gap between intermittent renewable electricity generation and continuous supply of reliable electricity. The electrodes found in VRFB cells affect their energy efficiency (EE) and power density. It is important to fabricate electrodes with intriguing properties to enable VRFBs to have high performance. Herein, the abundant and cost-effective lignin is employed as the precursor to produce amorphous carbon particles after undergoing thermal decomposition treatment. The carbon particles cover the surface of carbon felt (CF). The resulting CF modified by lignin-derived carbon particles (Lignin-CF) with increased active sites and improved hydrophilicity displays superior electrochemical activity towards the VO(2)(+)/VO(2+) pair than both the pristine CF and the heated bare CF. Remarkably, the VRFB consisting of Lignin-CF which acts as the positive electrode shows high performance in terms of the average EE (83.3%) and average voltage efficiency (VE) (85.0%) over 1000 cycles (long cycling life) for more than 16days at 100mAcm(-2), and high power density of 1053.2 mW cm(-2). It is noted that the EE and VE are comparable to the highest reported value of CF modified by carbon-based materials, aside having evidently longer cycling life. This study provides a feasible strategy for fabricating an affordable electrode for high-performance VRFBs.
摘要：
The accuracy of the data is crucial to the real-time prediction of autonomous driving. Due to factors such as weather and the accuracy of data collection equipment, there frequently exist noises in the data collected in real time. Therefore, it is necessary to perform analysis on acquired kinematic features related to driving behavior prediction. This study proposes a novel deep learning framework to explore influences of data noises on lane-changing intention prediction. Kinematic features including the longitudinal distance difference, velocity and acceleration, lateral velocity and acceleration of the vehicles are first extracted from the HighD. Then, the anti-interference performance of deep learning models such as transformer is tested. By comparing dataset with and without noises, we develop an evaluation method containing several predictive performance metrics and statistical measures. The results show that: (1) the longitudinal acceleration of the vehicle has the lowest sensitivity to noise, and the lateral velocity has the weakest anti-interference and the highest sensitivity. (2) The Bi-LSTM model with multi-head attention mechanism performs well in reducing the sensitivity of longitudinal acceleration and prediction accuracy. This study provides valuable information for data acquisition and model selection of real-time driving intention prediction.
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：
Objective. Dynamic functional network connectivity (dFNC), based on data-driven group independent component (IC) analysis, is an important avenue for investigating underlying patterns of certain brain diseases such as schizophrenia. Canonical polyadic decomposition (CPD) of a higher-way dynamic functional connectivity tensor, can offer an innovative spatiotemporal framework to accurately characterize potential dynamic spatial and temporal fluctuations. Since multi-subject dFNC data from sliding-window analysis are also naturally a higher-order tensor, we propose an innovative sparse and low-rank CPD (SLRCPD) for the three-way dFNC tensor to excavate significant dynamic spatiotemporal aberrant changes in schizophrenia. Approach. The proposed SLRCPD approach imposes two constraints. First, the L1 regularization on spatial modules is applied to extract sparse but significant dynamic connectivity and avoid overfitting the model. Second, low-rank constraint is added on time-varying weights to enhance the temporal state clustering quality. Shared dynamic spatial modules, group-specific dynamic spatial modules and time-varying weights can be extracted by SLRCPD. The strength of connections within- and between-IC networks and connection contribution are proposed to inspect the spatial modules. K-means clustering and classification are further conducted to explore temporal group difference. Main results. 82 subject resting-state functional magnetic resonance imaging (fMRI) dataset and opening Center for Biomedical Research Excellence (COBRE) schizophrenia dataset both containing schizophrenia patients (SZs) and healthy controls (HCs) were utilized in our work. Three typical dFNC patterns between different brain functional regions were obtained. Compared to the spatial modules of HCs, the aberrant connections among auditory network, somatomotor, visual, cognitive control and cerebellar networks in 82 subject dataset and COBRE dataset were detected. Four temporal states reveal significant differences between SZs and HCs for these two datasets. Additionally, the accuracy values for SZs and HCs classification based on time-varying weights are larger than 0.96. Significance. This study significantly excavates spatio-temporal patterns for schizophrenia disease.
摘要：
This study addressed the complex problems of selecting a constitutive model to objectively characterize asphalt mixtures and accurately determine their viscoelastic properties, which are influenced by numerous variables. Inaccuracies in model or parameter determination can result in significant discrepancies between the calculated and measured results of the pavement’s structural dynamic response. To address this, the research utilized the physical engineering principles of asphalt pavement structure to perform dynamic modulus tests on three types of high-content rubberized asphalt mixtures (HCRAM) within the surface layer. The research aimed to investigate the influencing factors of the dynamic modulus and establish a comprehensive master curve. This study also critically evaluated the capabilities of three viscoelastic models—the three-parameter solid model, the classical Maxwell model, and the classical Kelvin model—in depicting the dynamic modulus of HCRAM. The findings indicated a negative correlation between the dynamic modulus of the asphalt mixture and temperature, while a positive association exists between the loading frequency and temperature, with the impact of the loading frequency diminishing as the temperature increases. Notably, the three-parameter solid model was identified as the most accurate in describing the viscoelastic properties of the HCRAM. Furthermore, the dynamic response calculations revealed that most indexes in the surface layer’s dynamic response are highest when evaluated using the three-parameter viscoelastic model, underscoring its potential to enhance the pavement performance’s predictive accuracy. This research provides valuable insights into optimizing the material performance and guiding the pavement design and maintenance strategies.
摘要：
Recommendation systems have been effectively utilized in various fields, but their internal decision-making methods are still largely unknown. This opaque decision-making method can greatly affect users’ trust in the recommendation system. Therefore, finding a way to explain the reasons for model decisions has become an urgent task. Previous studies often used LSTM and other models to generate recommendation explanations and explain the reasons for recommendations in text form. However, traditional methods cannot effectively use the ID information of users and items, and the text generated is highly repetitive. To solve this problem, this paper uses the method of prompt learning combined with a graph encoder to design a recommendation explanation generation model. In order to narrow the semantic gap between the ID information of users and items and natural language and capture high-level interaction information, this paper designs a graph encoder based on user similarity to learn the interactive semantic information of user and item IDs, and to construct a continuous prompt. Then, the discrete prompt composed of discrete features of users and items is combined with the continuous prompt to construct a hybrid prompt to input into the pre-trained model to generate the recommended explanation. This paper experiments on three publicly available datasets and compares them with several state-of-the-art methods to demonstrate the personalization and text quality of the generated explanations.
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.
作者机构：
[Cai, Wangyang; Wu, Haoyun; Liu, Yichong; Zhao, Jiajia; Yue, Lei] Computer and Communication Engineering Institute, Changsha University of Science and Technology, Changsha, 410114, China;[Zhang, Lifu] Institute of Microscale Optoelectronic, Shenzhen University, Shenzhen, 518060, China;[Wang, Lei] School of Computer Science and Engineering, Center South University, Changsha, 410083, China
通讯机构：
[Lei Wang] S;School of Computer Science and Engineering, Center South University, Changsha, 410083, China
关键词：
Dark solitons;Frequency combs;Multimode fibers;Phase modulation;Total internal reflection;Wavelength conversion
摘要：
We investigate the pulse evolution and energy conservation condition at the temporal boundary under third-order dispersion. When the fundamental soliton crosses the temporal boundary and forms two reflected pulses and one transmitted pulse, the power of the transmitted pulse first increases and then decreases as the incident spectrum shifts toward the blue side. If the transmitted spectrum lies in the anomalous group-velocity dispersion region, second-order soliton is formed and dispersive wave is radiated. We present a modified phase-matching condition to predict the resonance frequencies. The predicted results are in good agreement with the results obtained by numerically solving the nonlinear Schrödinger equation.
摘要：
Effects of steam explosion (SE) treatment (0.3-1.0 MPa, 30-90s) on the physicochemical and functional properties of dietary fiber (DF) extracted from tea residue were investigated. Results showed that SE led to the formation of porous and less compact microstructures of tea residues. Compared with the control sample (12.41 g/100 g), the content of soluble dietary fiber (SDF) was markedly increased by SE, reaching the maximum of 23.03 g/100 g when steam explored at 0.5 MPa for 90 s, due to the degradation of insoluble dietary fiber (IDF). The physicochemical and functional properties were significantly influenced by SE treatments. IDF exhibited decreased water holding capacity (WHC), swelling capacity (SC), oil holding capacity (OHC) after SE, whereas the physicochemical properties of SDF from SE-treated tea residues (0.3 MPa, 90s) were greatly improved. The glucose absorption capacity (GAC), cholesterol adsorption capacity (CAC), and nitrite ion adsorption capacity (NIAC) of both IDF and SDF showed trends of first increasing and then decreasing, indicating that excessive SE treatment resulted in poor properties of DF. These findings are of great value for the high-value utilization of agricultural by-product and development of functional foods.
