The entire process of slowly raising granite from room temperature to 600℃, natural cooling in air, and thermal shock cooling in water followed by cooling to room temperature was observed using a polarizing microscope. The microscopic structures were analyzed by quantitatively analyzing the mineral area and the number of cracks in the field of view to investigate the damage caused to granite during the heating process and after thermal shock in different cooling media. The results indicate that:...

In order to meet the demand for co-utilization of industrial solid waste to solidify red mud, this paper added industrial solid waste materials such as slag and silica fume to red mud, and used the NaOH initiation reaction system to co-solidify red mud. The strength, resistivity, hydration products and microstructure of solidified red mud were tested by using unconfined compressive strength testing machine, digital AC bridge, X-ray diffractometer, scanning electron microscope and synchronous ther...

Hydrogen energy with its high heat value, combustion products are extremely environmentally friendly and have become the most promising alternative energy sources to replace traditional fossil fuels, efficient and clean secondary energy in the 21st century. The necessity of hydrogen development, promotion and utilization under the dual-carbon goal of "2030 carbon neutral 2060 carbon peak" as well as the current hydrogen energy development policy and strategic layout in China are analyze...

【Purposes】The development of shale oil and gas often requires a thorough understanding of the internal pore-fracture distribution patterns within shale reservoirs to optimize development strategies and enhance production capacity. In this context, the fractal dimension holds significant importance for reflecting the distribution patterns of pores and fractures within shale formations.【Methods】In this study, a convolutional neural network-based method for predicting the fractal dimension of sh...

The paper aim to understand the nonlinear vibration response characteristics of axially moving beams with intermediate support constraints. The dynamic equation of the system is established based on Hamilton principle, and the motion equation is discretized into a nonlinear ordinary differential equation using the Galerkin method. Combining the improved arclength method extension method with the incremental harmonic balance method, the dynamic equations of the system were solved, and the dynamic ...

We propose an improved wavelet clustering algorithm to address the issue of cluster overlap in the In-phase and Quadrature (IQ) domain caused by multi-tag collisions in Radio Frequency Identification (RFID) backscatter systems. This algorithm offers significant advantages in dealing with cluster overlap problems that are not effectively resolved by conventional clustering algorithms. In the improved wavelet clustering algorithm, we leverage the characteristics of multi-tag collision signals based...

Deep reinforcement learning is a very promising area of research that can be applied to multiple domains to solve a variety of complex tasks. The phasic policy gradient with sample reuse(SRPPG) is proposed to address the problems of non-reuse of samples and low sample utilization in policybased deep reinforcement learning algorithms. The algorithm introduces offline data based on the phasic policy gradient (PPG), thus reducing the time cost of training and enabling the model to converge quickly. ...

According to the anisotropic heat transfer differences of oil shale, the horizontal and vertical bedding heat transfer differences of Barkol oil shale in Xinjiang under different temperatures were investigated by means of laboratory test and numerical simulation. The experimental results show that: 1) With the increase of temperature, the heat conduction coefficient of each bedding direction shows a "decreasing" trend, but the heat conduction coefficient of parallel bedding direction is...

In order to predict the traffic of 5G base stations more accurately and analyze the tidal phenomenon, we propose a traffic prediction method of GAN model with differential algorithm to improve the gray wolf optimized LSTM, and use it in the timing control of actual base stations, which can effectively save the energy consumption of base stations. Firstly, since GAN is not adaptable to time series processing and LSTM is suitable for time series problems, the two are combined, the generator of GAN ...

In order to overcome the problems of low fault recognition rate, slow convergence speed and easy to fall into local extremum in the current traditional back propagation (BP) model for heat network leakage fault diagnosis, an optimized BP model based on genetic algorithm-ant colony optimization (GA-ACO) algorithm was proposed. The initial value of the pheromone is improved by mean of using the cross-variance operator of the GA algorithm, the iteration speed of the model and the search for the opti...

This study investigated the mechanical properties of cement mortar with highly dispersed graphene oxide after exposure to 105, 200, 300, and 450 ℃. First, GO was uniformly dispersed in the cement matrix with the aid of polycarboxylate-based superplasticizers. The results showed that the incorporation of 0.04wt% dispersed GO can improve the flexural strengths and compressive strengths of cement mortar. For cement mortar with 0.04% GO (by weight) (MPG) exposed to temperatures of 105, 200, 300, and...

In order to study the resistivity characteristics and mechanism of solidified loess mixed with CaOmodified red mud, the resistivity of the samples with different CaO and red mud content and curing age was tested. In addition, XRD, SEM, EDS, porosity and pore-throat distribution of these samples under different conditions were tested to analyze the mechanism of resistivity change. The results show that the resistivity decreases with the increase of CaO and red mud. Compared with cement solidified ...

To achieve the reuse of solid waste, this study explores the feasibility of using compacted tailings-bentonite material as an impermeable material for landfill cover system. The maximum dry density of tailings-bentonite mixtures with varying bentonite content was determined through compaction tests. Saturated permeability coefficients of the tailings-bentonite mixtures were measured using a consolidation permeameter. Additionally, the pore characteristics of the samples were analyzed through merc...

To explore the dynamic performance of circulating fluidized bed(CFB) combustion ash subgrade under the driving load, the dynamic resilient modulus characteristics of GF combustion ash and DTH combustion ash under different curing age, compaction degree, water content and stress level were studied based on laboratory dynamic triaxial test. Combined with mercury intrusion porosimetry(MIP),the pore distribution characteristics of CFB combustion ash were analyzed. The measured results reveal that wit...

The new elastic potential energy storage system completes the energy storage process by driving the energy storage box with the PMSM (permanent magnet synchronous motor), The energy storage form of the energy storage box is elastic potential energy, and the storage medium is a large planar scroll spring. The installation structure and operating characteristics are complex. To achievestable and efficient energy storage in the system, it is first necessary to establish an accurate mathematical mode...

Conveyor belt, as an important transportation equipment in coal mine, is often damaged, which affects the safety and efficiency. An improved YOLOv4 detection model is proposed to solve the problem of missing detection and false detection when the existing model detects objects with small size and low contrast with the background. In order to solve the problem of small size, firstly, the DDS unit is designed to replace the Res unit in the backbone network. By connecting features of different level...

The Hutuo Group belongs to the Early Proterozoic strata. As one of the most typical Paleoproterozoic strata in North China, the timing redefinition of the Hutuo Group is of great significance to the establishment of the early Precambrian stratigraphic chronology framework, the discussion of the early Precambrian geological evolution process in North China and the study of plate assembly. This article conducts a detailed study of the Dongye Subgroup strata of the Hutuo Group, collecting 24 detrita...

Basing on the microbial mineralization technique, considering the characteristics of high-temperature concrete damage, the mineralization conditions in the process of microbial mineralization were taken as research objects, the influence of mineralization conditions on mineralized products andmineralization efficiency was studied by changing mineralization temperature, initial pH value, bacterial solution concentration and repair fluid concentration. The appropriate mineralization conditions were...

In order to obtain additional microstructural information on the Co n MoS(1-5) cluster and establish a theoretical foundation for subsequent investigations of its electronic properties and catalytic performance, this study investigates the atomic interaction relationships and frontier orbital compositions of the cluster. To accomplish this,we utilized density functional theory with the B3LYP functional and def2-TZVP basis set to optimize the cluster configuration and perform theoretical analysis ...

The bimetallic modified Y zeolite is of great importance for the deep removal of thiophene in coking benzene. Among them, the influence of metal ion-exchange sequence on the desulfurization performance of zeolite is crucial. Therefore, a series of bimetallic modified sorbents were prepared by the ion-exchange method using Cu and Ce in this paper. The desulfurization performance of sorbents in thiophene-benzene solutions were evaluated by static adsorption experiments. The physical and chemical pr...

In order to study the effect of carbon fiber doping on the dynamic compression performance of the grouted body, ultrafine cementitious grouting materials with carbon fiber doping of 0.0%, 0.5%, 1.0%, and 1.5% were used for the grouting test of graded gravels, and the variation rules of dynamic compression strength and energy dissipation of the grouted body specimens were tested by the Hopkinsons Impact (SHPB) test. In order to investigate the microstructure of carbon fibers within the test block,...

The content of Al 2 O 3 in the fly ash and slag after combustion of Zhungeer coal is over 45%, which has important value of comprehensive utilization of resources. In order to solve the problems of poor fly ash activity and low Al 2 O 3 extraction efficiency when using Zhungeer coal in conventional circulating fluidized bed boilers, a coal water slurry circulating fluidized bed combustion method was proposed to improve the ash characteristics, the effects of feed mode, operating oxygen content, b...

This paper designs a novel type of Ni 2 CoCr 0.5 Si 0.3 Al 0.1 Ti 0.1 medium entropy alloy. By adding trace amounts of Si, Al, and Ti elements to the non-equiatomic ratio NiCoCr-based medium entropy alloy, and further introducing dispersed coherent L1 2 phase precipitation through aging heat treatment at different temperatures. The results showed that the Ni 2 CoCr 0.5 Si 0.3 Al 0.1 Ti 0.1 medium entropy alloy aged at 700 ℃ has the best mechanical properties, with a yield strength of 783MPa, a u...

Deep convolutional neural networks are powerful models that have been widely used in various medical image processing tasks. However, when processing time series data with a growth relationship, CNN may not be effective due to its inability to extract the complete spatial growth relationship between sequence images. The Transformer-based model overcomes this problem through its self-attention mechanism. Therefore, this paper proposes a Dual stream enhanced lung cancer growth evolution predictive ...

Reinforcement learning policy transfer is an effective way to reduce the consumption of deep reinforcement learning training.Local policy transfer is policy transfer at a fine-grained, which is of great significance to the improvement of the global policy performance and the formation of a new global policy by the combination of local policy. However, most current researches on policy transfer focus on the global policy transfer, and relatively few research on local policy transfer. Therefore, th...

The slip-zone soil in Shanxi coal-measure soft rock landslide generally contains a large number of clay minerals, which is a typical slip soil with certain expansibility and is different from the conventional slip soil in mechanical properties. In this paper, four typical cases of clayey slip soil in soft rock landslides of Shanxi coal measures in the Yellow River Basin in Shanxi Province are taken as the research object. The research methods include X-ray diffraction test, slow shear test and fr...

Unlike smog, dust distribution is often non-uniform and local, and it lacks an effective model description for light scattering and absorption, which seriously affects the depth estimation that relies on image features. To address this issue, a method for depth estimation of dust images incorporating visual attention is proposed. In this method, the distribution model of dust in the image is established, and the visual attention network module is designed accordingly to obtain the attention map o...

The visual joint perception system can realize multi-tasks such as traffic object detection, drivable area segmentation, and lane detection in autonomous driving traffic scenes, which is essential in autonomous driving. In practical application, the accuracy and speed should be appropriately balanced. The autonomous driving visual joint perception network YOLOP has achieved great performance in real-time. However, it ignores the feature conflicts of different scales in the feature pyramid network...

Current research shows that human language function is the result of the interaction of temporal lobe, parietal lobe and frontal lobe. In order to explore the relationship between the language areas of human brain and the brain areas of macaque, the structural connections between the language region and the macaque brain region and the predefined homologous target brain region were constructed based on the robabilistic fiber tracing method, and the structural connection fingerprints were drawn an...

Increasing the permeability of coal reservoirs is a key technology to improve the recovery rate of coalbed methane, and in-situ thermal injection mining is an effective method to enhance coalbed methane production. In order to explore the change rule of coal reservoir permeability under the coupling of heat, fluid, and solid, pyrolysis seepage experiments of anthracite with different burial depths and temperatures were conducted, and theoretical analysis and research were conductedon the experime...

To study the influence of different tamping methods on the reinforcement effect of sand dynamic compaction from the perspective of soil stress distribution characteristics. The dynamic compaction model test was carried out in the outdoor field to monitor the vertical and radial soil pressure in the soil and falling weight acceleration during the tamping process, and the displacement in the soil was analyzed by numerical simulation method. It is concluded that in the construction of dynamic compac...

To solve the key problems in the field construction of the first single-layer aluminum alloy lattice shell structure in Shanxi Province, the interaction analysis between the 12.9m cantilever canopy structure at the lower part and the 58.3m diameter single-layer aluminum alloy lattice shell structure at the upper part was carried out, and the reasonable installation sequence of installing the lattice shell first and then the canopy was obtained. According to the conditions of the construction site...

The integration of large-scale renewable energy into the power grid led to the reduction of equivalent moment of inertia in the frequency control process and the shortage of standby capacity of traditional thermal power units for frequency modulation. The battery energy storage system(BESS) played a good auxiliary role in solving these problems with its fast response and flexible regulation.However, the individual characteristics of BESS made it necessary to have a more refined control strategy ...

With the advent of the Internet of Things era, the data generated by mobile terminals is showing explosive growth. In order to ensure the privacy and retrievability of cloud data, ciphertext retrieval technology has emerged. However, cloud computing is no longer able to meet the current data processing requirements. To solve the problems of low efficiency and low security level in cloud computing ciphertext retrieval scheme, an efficient certificateless ciphertext retrieval scheme based on edge c...

In order to realize the high-value utilization of coal gangue, the thermal activation parameters of kaolinite in coal gangue were optimized by orthogonal test, and the compressive strength and microstructure of paste consisting of cement and metakaolin formed under the optimal activation conditions was studied. The experimental results showed that the optimum thermal activation conditions of metakaolin are calcination temperature 800℃, holding time 2h and grinding fineness 2.82 μm. Calcination ...

Intelligent filling of goaf is an important direction of green, safe, intelligent and efficient mining of coal resources, and the key lies in intelligent decision-making and control of gangue filling process in underground goaf. Taking the stress and deformation of surrounding rock after filling as monitoring indicators, this paper established a deep neural network algorithm for intelligent filling in goaf, which can calculate and analyze the stope stress and surrounding rock deformation of diffe...

As a coal based solid waste rich in silicon and aluminum oxides, utilization of coal gangue is crucial for the sustainable development of coal industry. In this study, grinding and integrated modification of calcined coal gangue and aluminate coupling agent to prepare of rubber reinforcement was proposed. and the influence of grinding time and the amount of modifier on the surface modification was investigated. Obtain ultrafine particles through air flow classification, the influence of modificat...

The existing research results on mining induced water inrush through concealed faults underlying coal seam floor only consider the condition of single confined aquifer under coal seam floor. To study the activation characteristics of water inrush through concealed faults under the condition of two layer confined aquifers, the mining stress and pore pressure evolution of concealed faults at different depths during mining were analyzed by means of similar physical simulations. The results show that...

The typical street canyon- building of the city is the research area. Based on field measurement and numerical simulation CFD(Computational Fluid Dynamics), the airflow pattern and pollutant distribution in street canyon and indoor under the building with windows opening .The result show that the opening of windows on the outer wall of building disturbs the surrounding air flow, which leads to the enhancement of the vortex flow in the street canyon, local wind direction and wind speed vary in dif...

Segmented heating coupled exhaust gas circulation is widely used in large coke ovens, but the optimization of air excess coefficient and air distribution ratio is insufficient. In this paper, the CFD method was used to study the combustion characteristics of coke oven gas in the two-stage heated duplex fire channel under different excess air coefficients and air distribution ratios. The results show that when the air distribution ratio is 65:35, the consumption rate of each combustible component ...

The crack damage to the tunnel lining structure caused by fire generally poses a significant challenge to the maintenance of its structural durability. To address this issue, a convex polygon aggregate numerical model of concrete with glazed hollow beads (GIC) consisting of coarse aggregate, mortar, and the interface transition zone was established through the interactive use of MATLAB and COMSOL software. The numerical simulation was conducted to investigate the chloride ion transport behavior c...

The artificial freezing method often used in subway tunnel crossing the water-rich sand layer is subjected to the synergistic action of heat, flow and force field during the frozen soil process. It is of great significance to study the multi-field coupling freezing effect for the application of artificial freezing method to ensure the effectiveness of soil water sealing and reinforcement. Therefore, based on the engineering background of artificial freezing method in Kunming Metro, a three dimens...

As the "worlds oldest overpass", the Flying Bridge Across Fish Ponds in Jinci Temple highlights the cultural characteristics of ancient buildings in Shanxi. In this paper, the compressive strength of the Flying Bridge Across Fish Ponds in Jinci Temple stone pillar was tested by the rebound meter. AutoCAD software was used for three-dimensional modeling according to the mapping paper, and Abaqus finite element analysis software was used to simulate and analyze the overall stability under...

Prefabricated concrete anti-collision wall has been applied in expressway gradually because of its various advantages. Based on this, the metal bellows connected prefabricated concrete anti-collision wall is designed, and its anti-collision performance is studied by experiments and finite element. The failure form, stress process and impact parameters of anti-collision performance of prefabricated concrete under horizontal impact are analyzed. The effects of impact energy on crashworthiness were ...

Aiming at the problem that Granger Causality (GC) analysis in EEG emotion recognition does not consider the interaction between nodes when constructing brain network, a method of constructing brain network by combining fuzzy cognitive map (FCM) and GC analysis is proposed. Firstly, based on the correspondence between the structure of FCM and GC brain network, the GC brain network is modeled and improved by using the causal attributes among FCM nodes, and the FCM-GC brain network is constructed, t...

The stepped pile with variable cross-section is a new pile type that is improved on the basis of the pile with equal cross-section, but its loading and deformation are relatively complex, and the process of exerting lateral friction resistance, end resistance at variable section and pile end is not understood. In this paper, the vertical bearing capacity of ordinary pile and stepped pile was studied by laboratory model comparison experiment, and it was found that: under the same conditions, the s...

Orthopedic insoles are an effective means of non-surgical correction of flatfoot, but there is no unified view on its rehabilitation mechanism, and most previous studies have focused on the improvement of plantar pressure. The kinematic and kinetic data of the lower limbs of flatfoot patients during walking were obtained by using a three-dimensional motion capture system, a force measuring table and a foot test system. The results showed that the patients with flatfoot wore orthopedic insoles bef...

【Purposes】 The corneal shape and mechanical properties of the cornea and contact lens material have a certain impact on the correction effect of the contact lens. 【Methods】In this paper, a finite element model of corneal wearing orthokeratology lens was established using hyperelasticity materials, and the biomechanical response of the cornea after wearing the lens was analyzed by changing the shape of the cornea (different curvature and thickness) and the material parameters of the cornea and...

Organic electrochemical transistors are hydrogen ions sensitive when the gate electrodes are modified with poly (3,4-ethylenedioxythiophene)/bromothymol blue. Previously, we have fabricated pH sensors based on pH-sensitive poly (3,4-ethylenedioxythiophene)/bromothymol blue film and the semiconducting layer of poly (3,4-ethylenedioxythiophene)/polystyrene sulfonate and proposed a theoretical model describing the current-voltage (I-V) relationship of Organic electrochemical transistors based pH-sen...

With the development of low-power wide area networking technology and micro sensors, they have been widely used in wearable devices, achieving better transmission of vital sign monitoring data. However, existing technologies such as Bluetooth and Wi Fi have difficulties in networking in scenarios such as nursing homes and other multi node network monitoring, and due to sensor volume limitations, blood pressure cannot be effectively monitored. This article designs and implements an ad hoc network ...

The vehicle routing problem with time windows is a classical combinatorial optimization problem, which is the key of logistics distribution system. In the actual logistics distribution, enterprises often use the method of compensating for delayed delivery to solve the problem of distribution overtime, so as to improve customer satisfaction. Aimed at this case, this paper proposes the capacitated vehicle routing problem with soft time window(CVRPSTW), and uses the penalty function method to establ...

To address the problem of sharp decrease in recognition accuracy caused by covariate factors such as camera view or pedestrian occlusion in gait recognition, an improved feature enhancement GaitPart cross-view gait recognition method IFE-GaitPart (An Improved Feature Enhancement GaitPart) is proposed, which improves the network model into The method improves the network model into a two-path parallel form containing a spatial feature extraction branch and a significant temporal modeling branch, a...

Most of the existing image watermarking schemes are designed to embed the watermark into a single image. This paper suggests embedding a watermark into two images at one time to improve the efficiency of the watermarking procedure. The two original images are firstly combined together through complex representation, then the watermark is embedded by quantizing the magnitudes of the Exponent Fourier Moments of the combined image, and the watermarked combined image is obtained by adding the combine...

Air conditioning energy consumption plays an important role in the whole building energy consumption. The establishment of air conditioning system energy consumption model can help building operators make accurate energy management plans, optimize the operation of building energy consumption equipment, and realize intelligent energy management. In this paper, a combined prediction model for energy consumption of hybrid air conditioning system is proposed. Particle Swarm Optimization (PSO) is used...

The unknown multi-motor driven load systems are addressed in this paper with game theory and adaptive dynamic programming. The neural network (NN) is used to approximate the unknown dynamics. Based on the approximated dynamics, define the optimal performance index and design the optimal tracking controls. The adaptive dynamic programming based tracking controls are divided as steady-state controls and optimal feedback controls. Steady-state controls can be obtained with thetracking commands and l...

At present, the new energy generation is greatly connected to the power system, so that its frequency stability and power quality is severely challenged. In order to solve the problem of capacity size when the energy storage battery system assists the power grid in frequency modulation, a capacity optimization configuration model for energy storage secondary frequency modulation is proposed, and then the Antlion optimization algorithm is used to optimize and solve the parameters of the model. Due...

In order to ensure the security of multimodal medical images, a multimodal medical image protection algorithm based on genetic coding and coupled hyperchaotic mapping is proposed. In the stage of chaotic sequence generation, CMC-CTBCS coupling model is proposed, and three-dimensional Sine-ICMIC cascade mapping (3D-SICM) is constructed with Sine mapping (Sine) and Iterative chaotic map with infinite collapses (ICMIC) as seed mapping, which is applied to the design of multi-mode medical image encry...

Aiming at the problem of low strain tolerance present in Ba(Mg1/3Ta2/3)O3 (BMT) thermal barrier coating prepared by conventional atmospheric plasma spraying, based on suspension plasma spraying (SPS), a BMT suspension with different composition was prepared by mechanical ball grinding using ethanol as the dispersion medium and polyacrylic acid (PAA), polyethyleneimine (PEI), and polyethylene glycol (PEG) as dispersants. The dispersion behavior of BMT suspension was studied by using the gravity se...

CFG pile composite foundation soft foundation treatment method has the advantages of high bearing capacity, small settlement, short construction period, low cost, etc., which has been widely used in recent years, among which the flexible bedding layer and pile cap have a greater influence on the pile-soil stress ratio, load sharing ratio and settlement of CFG pile composite foundation, but further research is still needed about how the flexible bedding layer and pile cap jointly affect the charac...

Recently, self-supervised contrastive learning has shown great potential in Graph Neural Network (GNN) through the use of contrastive learning to distinguish each node or instance in a dataset. However, a common issue in contrastive learning is the presence of "false-negative samples" where some negative samples are actually positive samples, leading to biased model learning. To address this issue, this paper proposes a new self-supervised contrastive learning framework called FD4GCL, w...

In this paper, the dynamics of the three-dimensional periodic lattice cluster structure is analyzed to explore the internal relationship between the design of different periodic elements and the macroscopic global characteristics. The finite element method was used to establish the space truss model and its vibration isolation performance was evaluated by calculating its frequency response characteristics. Twokinds of space truss structure models were designed according to the band gap principle ...

This study focuses on the "four-stage temperature" management requirements for crops in a solar greenhouse and takes the solar greenhouses in the Taiyuan area as the research object. A numerical model of a naturally ventilated solar greenhouse is constructed using the Computational Fluid Dynamics (CFD) method. The model considers the influence of crop resistance on indoor airflow, as well as thetranspiration of crops and the impact of soil evaporation on the thermal and humidity environ...

Sulfate attack is an important factor contributing to the durability damage of concrete structures in coastal and salt-lake areas. In order to explore the interaction between sulfate erosion and concrete damage, the damage function was introduced in Ficks Second Law, and the diffusion-reaction-damage model of the sulfate ion erosion process in concrete was established considering the chemical reaction of the sulfate ion transport process. The three-phase meso-model of concrete was constructed by ...

【Purposes】Two-stream convolutional networks primarily achieve high recognition accuracy by fusing spatial and temporal features of videos. Traditional two-stream convolutional networks extract temporal features using optical flow or temporal shift modules. The disadvantage of using optical flow is the heavy workload required, while the disadvantage of using temporal shift modules is that they can damage the original videos spatial and channel features.【Methods】 This paper proposes a two-strea...

In recent years, there has been a growing interest in backscatter networks. Backscatter nodes such as radio frequency identification (RFID) tags can absorb electromagnetic waves in the environment as energy and can be deployed on a large scale within the environment. These advantages make they can communicate with each other in the complex environment. However, due to factors such as multipath effect and channel fading, when we select unfit rate the system’s goodput will decrease. Therefore, it ...

The generation of Traditional Chinese Medicine (TCM) prescription is one of the most challenging tasks in the research of intelligent TCM. Although there is a small part of research in this field, they usually use transfer learning methods to apply the relevant technology of text generation to this task simply and roughly. Either they need to train a model with large number of standardized dataset, or they ignore the domain knowledge and expertise of TCM. In order to solve these problems, we prop...

All-optical buffer is an essential component for all-optical communication. Coupled Resonator Induced Transparency(CRIT) effect is a typical experimental method to generate slow light. Resonant optical tunneling effect (ROTE) resonant cavity is a unique rectangular microcavity. Inspired by ring microcavity coupling, the optical resonator coupling based on ROTE is analyzed in this paper. The model to realize the CRIT effect is simulated using the transmission matrix method. The variation of the ou...

Exploration of anode materials with excellent electrochemical properties is essential to improve the performance of sodium ion batteries (SIBs). High -entropy oxide (HEO), with their unique structural characteristics, tailorable chemical composition and tunable functional properties, have drawn increasing interest in the fields of environmental science and renewable energy technology. However, directly using high entropy oxides as anode materialsfor sodium ion batteries, a problem of agglomeratio...

Due to the many types of electrical equipment and the complex connection between the equipment in the transformer station, there are many common problems that the location of equipment and picture contrast are relatively single, a limited number of target images and markers can be obtained in practical applications, and the lack of accuracy of electrical equipment image segmentation is brought by the traditional way of segmentation. In this paper, CNN (Convolutional Neural Network) is combined wi...

The situation of the post-disaster site of coal mine underground is complex, for the traditional A* algorithm of coal mine robot rescue path planning exists path insecurity, low efficiency and other problems, combined with the raster map and the characteristics of the rescue robot can be moved along any direction, multi-faceted improvement of the traditional A* algorithm. Firstly, the concept of robot size superimposed to obstacles is introduced to ensure the safety of the path. Secondly, the com...

The accurate prediction and evaluation of coal combustion heat is an important basis for coal quality analysis and thermal engineering calculation. In this paper, for the problem that the oxygen bomb calorimetry method does not have real-time monitoring of coal quality changes, a coal-fired calorimetric prediction method by the bionic algorithm FA-GA jointly optimized BP neural network is proposed. The industrial analysis and elemental analysis data of 774 groups of coal commonly used in coal-fir...

Considering the problems of the existing Graph Convolutional Network(GCN) recommendation models, such as low model convergence efficiency, over-smoothing and deteriorative recommendations for long-tail items due to the effect of high-degree nodes on presentation learning. This paper presents a Contrastive Learning -basedSimplified Graph Convolutional Network for recommendation algorithm (SGCN - CL). The algorithm uses the self-supervised learning method to generate multiple views for the user and...

An iterative adaptive multi-state constrained Kalman filter binocular vision/inertial mileage calculation method (NN-MSCKF) is proposed to address the problem that the existing binocular vision/inertial mileage calculation method cannot accurately capture data in real time when the rescuers are performing localization calculations in obscured space. Firstly, we analyse the tracking efficiency and real-time requirements of the rescue personnels violent and complex movements in the occluded space, ...

The resistivity test technology has advantages such as convenient, rapid and nondestructive when evaluating mechanical properties of solidified heavy metal contaminated soil. In this study, the combined resistivity-unconfined compression test method was carried out to investigate strength and electrical properties of solid waste solidified contaminated soil. The results showed that the red mud-carbide slag-phosphogypsum solidified contaminated soil has higher strength, in which, both peak stress ...

To evaluate the behavior of strength degradation of corroded steel with pitting evolution, an insitu pitting evolution method is achieved by ABAQUS software combined with Python program based on pit statistics on steel matrix surfaces at different corrosion times. Following this, the stochastic pitting evolution method for assessing the mechanical properties of corroded steel is proposed. Then, on the premise of the consistent mass loss rates between the numerical model and the test, the accuracy...

The ore concentration area in Northeast Yunnan is an important part of the Sichuan Yunnan Guizhou polymetallic metallogenic domain. Even the Huize lead-zinc deposit with high degree of research in the area, the source of ore-forming materials is still controversial. In this study, two typical sections are selected and a series of isotopic tests are carried out in combination with previous data to supplement the multi isotope evidence of ore-forming material sources, so as to study the source of o...

In the process of in-situ steam-assisted oil shale extraction, the shear strength of oil shale plays a crucial role in the stability of injection and production wells as well as the mining gallery. Additionally, the shear strength of the rock formation is influenced by temperature variations. To investigate the variations in the shear characteristics of oil shale under different temperatures and shear angles, a steam generation apparatus was employed to heat the oil shale. In the experimental set...

In recent years, with the frequent occurrence of building fires, the problem of the degradation of concrete macro-scale mechanical properties, resulted from the damage and deterioration of the internal micro-scale structure due to high temperature, has attracted widespread attention. The internally porous and highly thermally stable glazed hollow beads (GHB) can reduce the high temperature damage and deterioration of concrete to a certain extent, and improve the fire resistance of concrete. In or...

The rapid development of information technology has put forward high level of information security. In particular, information deep-hiding has been driving long research efforts in material science, communication technology and cryptology to improve the information security. Stimuli-responsive luminescent (SRL) materials show great potential in information deep-hiding by generating responsive fluorescent signals to external stimuli such as mechanical force, light, temperature, acidic or alkaline ...

The high proportion of new energy connected to the power grid through power electronic devices seriously affects the safe and stable operation of the power system distribution network, and further improves the requirements for relay protection. The proposed collaborated control-protection technology is of great significance for the new power system, but the research in this area is relatively still less. Firstly, this paper summarizes the development and application of new energy grid-connected c...

Traffic sign detection is to identify the location and category of traffic signs from images or videos in order to provide timely and accurate information for drivers, and has practical significance in early warning of road conditions and protecting driver safety. Aiming at the problems of large computation and high reference quantity in existing traffic sign detection algorithms, this paper proposes a lightweight traffic sign detection algorithm based on improved YOLOv7. The algorithm is divided...

As an important technology for intelligent education, the core task of knowledge tracing is to track changes in a students knowledge level, which is manifested in predicting whether the student can answer the next exercise correctly. Memory augmentation networks excel at this task due to the idea of external memory. However, existing memory augmentation networks only utilize a small number of features of interaction records, such as an exercise’s tag and response. A Knowledge Tracing Model based...

【Purposes】Traffic flow prediction is crucial for the effective management and operation of urban transportation systems. The flows of different road sections or intersections in a traffic network not only change dynamically with time, but also the flows of spatially neighboring road sections or intersections affect each other. 【Methods】In order to better learn the spatial and temporal correlation of the traffic flow of different road sections or intersections from the traffic flow sequences, ...

With the development of deep learning and natural language processing technology, pre-training model has become an effective way to solve problems such as relational classification and text classification. However, in practical applications, the pre-trained model still faces the challenge of low quality and quantity of knowledge information required for complex tasks, and the fusion of knowledge graph into the pre-trained model can enhance its performance. This paper analyzes and summarizes the l...

Aiming at the problem that the randomized neighbor list (RNL) method of directly disturbing the neighbor list in the existing local Differential privacy social network graph generation algorithm will lead to excessive noise and imbalanced privacy protection.So We propose a new social network graph generation algorithm (GPDP) satisfying personalized local Differential privacy. Firstly, the Louvain algorithm is used to partition the original social network graph and preserve community information; ...