Abstract.The wavelet transform is extensively utilized in signal denoising due to its benefits of reduced entropy, multiple resolutions, and decorrelation. This paper presents an enhanced wavelet threshold denoising algorithm that combines the existing improved threshold function and threshold selection method, building upon the traditional wavelet threshold denoising algorithm. The enhanced threshold function exhibits improved smoothness and reduced coefficient variation; the novel threshold selection approach integrates the Lipschitz properties of the signal and achieves a higher rate of noise signal … Read more →

Abstract.Aiming at the establishment of a new generation of substation auxiliary equipment detection platform intelligence, this study proposes a power production industry personnel safety wear detection technology based on improved Yolov5-C3CA to meet the demand. First, the network performance is improved by adding the CA attention mechanism module to Yolov5s network; moreover, the CA module is modified to C3CA module and added to the model for more effective addition of the attention mechanism; finally, the AFPN network structure is used to replace the original feature pyramid network structure, … Read more →

Abstract.In recent years, traffic accidents have occurred frequently, and most of them are related to the level of fatigue of drivers. In order to avoid the dangers of fatigue driving, this article judges whether the driver is in a fatigued state by analyzing the changes in pressure, angle, and distance during driving, so as to remind the driver to reduce the probability of accidents. In terms of hardware, we use the AT89C51 microcontroller as the main control unit, and configure infrared sensors, ultrasonic sensors, angular velocity sensors, and pressure sensors to detect the physical state of the … Read more →

Abstract.Natural gas needs to be depressurized before wellhead to gas gathering station or long-distance pipeline to users. At present, choking technique is widely used at wellhead and pressure regulating station, which will cause a lot of energy loss. Considerable economic and social benefits will be generated, if these residual pressures can be recycled. In this article, the pressure energy contained in the natural gas wellhead and pressure regulating valve station will be calculated based on exergy analysis. The technology and present situation of residual pressure utilization of natural gas are … Read more →

Abstract.In recent years, nanoparticles have become the focus of scientific research because of their wide potential application value. Iron oxides show incredible magnetic saturation, stability, and intuitive properties on the surface, making them ideal for a variety of uses. In this paper, nanometer iron oxide particles are synthesized by co-deposition method, and silica is further used to avoid agglomeration. Functional synthesis of cysteine nanoparticles (FNMs-Cys).The optimum synthesis conditions and adsorption conditions were determined by orthogonal experiments. In addition, the … Read more →

Abstract.This paper uses ABAQUS software, considering the nonlinear contact of pipe soil and buried soil material, and studies the simulation experiment of X100 steel pipe under uneven settlement conditions. The influence of settlement, internal pressure and wall thickness on the strain of steel pipe are discussed. The results show that compared with the internal pressure, the wall thickness has a greater impact on the deformation, the increased wall thickness can effectively reduce the maximum pressure strain, and the maximum pressure strain position will move to the axial direction. Deformation … Read more →

Abstract.Ventilation is the cornerstone of coal mine safety production, and accurate monitoring of ventilation parameters is the basic guarantee for ventilation technology decision-making. Aiming at the problem that the accuracy of wind speed monitoring in coal mine roadway is difficult to meet the needs of decision-making, this paper studies the position relationship between the average wind speed line and the roadway wall surface by combining theoretical calculation and numerical simulation, and simulates the wind speed distribution law of typical roadway section. The main factors affecting the … Read more →

Abstract.The ecological reconstruction of hollow village should gradually improve the rural living environment, regulate the features of farm houses and courtyards, beautify the village, protect and restore the village facilities such as ponds and ditches, natural landscape and pastoral landscape, and keep the overall style of the village in harmony with the natural environment. We will formulate plans for the protection and development of traditional villages, protect traditional culture, improve the lists of historic and cultural villages, traditional villages and residential houses, and establish … Read more →

Abstract.In the process of open-pit coal mining, the landslide phenomenon is very obvious, so for the safety of mine personnel and the smooth implementation of the project, studying the stability of the slope angle is an extremely important task. There are many factors that affect the stability of the slope, such as soil quality, climatic conditions, later pressure, etc., this project takes the open-pit mine as the research object, calculates the slope coefficient through geological data exploration combined with program analysis method, and then sets up a soil dump near the mining area, so as to … Read more →

Abstract.This paper aims to utilize the perceptron model in machine learning to achieve precise classification of the working status of welding machines by analyzing image data. We collected static images of welding and non-welding operations, extracted the R, G, B color values of the images, and labeled them accordingly (+1 for welding status, -1 for idle status). By employing the stochastic gradient descent method for training the perceptron model, we obtained the weights w and bias b of the model under the condition that all data points in the training set are correctly classified. The model's … Read more →

Abstract.Process Writing Approach emphasizes the whole process of writing namely pre-writing, drafting, revising and sharing. Compared with traditional writing approach, Process Writing Approach focuses more on thinking and discussion before writing as well as revising and sharing with others after writing. This paper explores how to make full use of Process Writing Approach to bring students’ initiative into full play and let them gradually derive pleasure from English writing and thus really reaches the aim of improving students’ ability to write in English. Read more →

Abstract.LDPE/ EPDM composites were prepared by mechanical blending method. The effects of two compatibilizers MA/Zn and CPE on the vulcanization properties, mechanical properties, aging resistance and electrical properties of the composites were studied. The results showed that the addition of two kinds of compatibility significantly improved the compatibility of LDPE and EPDM. Compared with CPE, the addition of MA/Zn can improve the properties of the composites better. The mechanical and electrical properties of the composite were improved by the addition of MA/Zn compatibilizer. The volume … Read more →

Abstract.This paper introduces the significance of energy conservation and the current situation of energy utilization in China, and focuses on the development prospect of heat pump technology. Since the proposal of carbon peaking and carbon neutrality has made higher requirements for carbon emission reduction in different industries, the energy structure in China will make important adjustments accordingly. The research focuses on the way to reduce carbon emission in conventional industries and making full use of renewable energy. Among different energy saving and emission reduction technologies, heat … Read more →

Abstract.The National English Curriculum Standard for Senior High School (2017 edition 2020 revised) points out the cultural awareness, as one of the key competence, can help students form international vision and cross-cultural communication ability, and foster a sense of human community with a shared future. But in the actual teaching process, English teachers often ignore the cultivation of student's cultural awareness and the level of students’ cultural awareness is not qualified. This essay aims to find out the current situation of high school students’ cultural awareness. The research question is … Read more →

Abstract.This Crack detection, as an important part of concrete structural health monitoring, aims to reflect the stress state and damage degree of the structure. Traditional concrete crack detection mainly relies on manual visual identification, which has low detection efficiency and accuracy. In addition, manual visual detection has problems such as being greatly affected by lighting conditions, being unable to cover overhead locations such as bridge towers and high piers, and being highly subjective. In recent years, in order to solve the above problems, researchers at home and abroad have developed … Read more →

Abstract.The purpose of this study is to explore the durability of the new and old concrete joints, including chloride ion erosion, freeze-thaw phenomena, and the influence of aggregates. Firstly, taking into account the difference in material properties between the old and new concrete, this study analyzes the chloride ion transport characteristics of the joints in detail, focusing on the key areas of the joints, that is, the areas where the old concrete may have been eroded by chloride ions. Secondly, this study explores the change in the properties of the joints under freeze-thaw conditions, and the … Read more →

Abstract.The global shipping industry is undergoing significant transformations with the large-scale and intelligent evolution of ships, which poses new demands on the skills and responsibilities of seafarers. This article explores how these trends affect the skill requirements of seafarers, including mastery of advanced technology, data analysis capabilities, safety management, emergency response, and communication and collaboration. As ship sizes increase and intelligent technologies are widely applied, the ways of navigational operations and management are undergoing revolutionary changes. Seafarers … Read more →

Abstract.Ochratoxin A (OTA) is a polyketide mycotoxin that commonly contaminates agricultural products and causes significant economic losses. In this study, we investigated the OTA degradation ability of Acinetobacter sp. strain 2-9B which was isolated from the soil. The effects of temperature, incubation time, and pH were studied. Furthermore, it was examined whether the washed cell pellet and the culture supernatant of the fermented culture (SFC) of the bacterial cell components could detoxify OTA. The results showed that strain 2-9B, which achieved 100% degradation of 2.5 μg/mL OTA, was identified … Read more →

Abstract.Fiber concrete is a novel composite material that has widespread use in the construction industry. However, high-temperature environments can cause severe damage to concrete structures. Therefore, it is essential to study the refractory properties and microscopic changes of fiber concrete under such conditions. This paper reviews the current research status of steel fiber concrete, polypropylene fiber concrete, and hybrid fiber concrete, which are commonly used in practical engineering, and summarizes their respective roles in concrete by combining theory and practice. The review also looks … Read more →

Abstract.The cooperation between Chinese and Cambodian vocational colleges and universities and enterprises aims to realize resource sharing and teacher exchange, and enhance the influence and core competitiveness of vocational colleges on both sides. This cooperation not only meets the needs of mutually beneficial cooperation in vocational education between China and Cambodia, but also actively promotes the reform and development of vocational education in both countries. The transnational vocational education alliance established with Cambodia has become a new model with the characteristics of The … Read more →

Abstract.The reinjection pump room plays a crucial role in industries such as petroleum and chemical engineering. Its main responsibility is to safely and effectively inject treated wastewater, exhaust gas, or other fluid substances into the formation, aiming to achieve resource recycling and environmental protection. However, the pipeline system of the reinjection pump room usually has complex spatial distribution, long span, and multi-point elastic support characteristics, which may cause structural vibration during operation, and have adverse effects on the stable operation, safety, and surrounding … Read more →

Abstract.The construction of high-standard farmland is an important measure to improve the quality of cultivated land and ensure the national grain. In this context, this paper discusses the concept, connotation and objectives of high-standard farmland construction through the literature method and combined with years of experience in high-standard farmland construction engineering technology, summarizes the technical points of high-standard farmland construction, and looks forward to the development trend of high-standard farmland construction technology in China in the future, in order to provide … Read more →