bluuebunny/crossref_metadata_2025 huggingface dataset:
Elimination of Interference in Through-Wall Radars
Authors: Marchuk V N , Ioda S V , Vasiliev Ya O
Published: September 2020

The fight against terrorist threats is highly relevant in the modern world. When developing devices for countering terrorism, their reliability and stability are very important. One such device is a device for detecting people behind optically opaque obstacles, which can detect the movement of people behind a wall and determine their number. However, the influence of interference effects that occur when summing up the reflected signals arriving by different propagation paths and, accordingly, having different phase shifts, leads to the fact that the observed image of the target can flicker and even disappear from the device screen for a considerable time, which is unacceptable in combat conditions. This article discusses various ways to eliminate interference, and on the basis of theoretical calculations, the most effective and cost-effective ways to eliminate the influence of interference effects in devices for detecting people behind optically opaque barriers are proposed. The obtained theoretical conclusions are confirmed experimentally.
Ground-based Microwave Radiometry for measurements of Atmospheric Water Vapour and Cloud Liquid Water Contents
Authors: Karavaev D M , Shchukin G G , Efremenko A N
Published: September 2020

The method of ground-based microwave radiometry for determining the integral parameters of atmospheric moisture content, such as integrated water vapor and cloud liquid water content is considered. Some results of experimental studies of integrated water vapor and integrated cloud liquid in different regions by means of ground-based and ship-based of microwave radiometers are given. The microwave radiometric measurements of integrated water vapor were found to be in agreement with independent radiosonding data (rms is ∼1 kg/m2). Microwave radiometric measurements of integrated cloud liquid of stratified clouds are consistent with empirical models of cloudy atmosphere based on aircraft data sensing of clouds. The capabilities of the novel microwave water vapor radiometer for studying variations in atmospheric moisture content on micro and meso scales were demonstrated. Histograms of the moisture content are obtained, and an approximation for the temporal structural function of the integrated water vapor in a wide range of time scales is discussed.
The space observation systems’ imagers computer modeling
Authors: Sedunov B I
Published: September 2020

The computer modeling of widely used in the space observation systems charge coupled devices matrix imagers with the time delay and integration regime is presented here. To suppress the aliasing problem of output images distortion, caused by the matrix discrete structure, the algorithm of every pixel conversion to 9 subpixels has been modeled. This algorithm performs the digital interpolation of output images and presents an approximation of the Kotel’nikov two dimensional low-pass filter. To study the effect of the imager’s output signals processing the Modulation transfer function with a sinusoidal law of the matrix illumination had been used. The image motion influence on the imager’s resolution had been modeled to estimate the Modulation transfer function anisotropy in the time delay and integration regime. The paper results open new ways to improve the space observation systems’ resolution.
The Influencing Factors of Bacillus megaterium Affect the Growth of the Antagonistic Strain and the Activities of Antibacterial Substances
Authors: Sun Ran , Xiao Yang , Guo Bokai , Li Zhu , Wan Ke , Yang Long , Zhao Jinyi
Published: September 2020

164 strains of Antagonistic bacteria were isolated from 131 mature-period soil samples from eight counties in Bijie City, Guizhou Province, China. In this study, the antagonistic bacteria that inhibited Alternaria alternata were screened and isolated. In addition, the antagonistic strain L2 was identified as Bacillus megaterium. Influencing factors also demonstrated that the suitable conditions for the production of antibacterial substances by strain L2 are as follows: liquid volume 50 mL/500 mL at pH 7.0 and 30°C under oscillation culture conditions, with beef extract as the carbon, nitrogen source.
Sand and Dust Hazard Risk Zoning for Ningxia Expressway
Authors: Wu Wanli , Guo Xiaohui , Liu Yao , Ma Lei
Published: September 2020

Based on GIS and AHP methods, the risk assessment and research of expressway sand and dust hazard are carried out from three aspects: 1) dangerous hazard formative factors, 2) environmental sensitivity, and 3) hazard-affected bodies vulnerability. According to 24 stations from 1981 to 2018 in observation data, the risk zoning is given combined with geographic information data. The results show thatthe high-risk areas are located in Yanchi section of Qingyin expressway (G20), Yanchi section of Dingwu expressway (G2012) and Ningxia section of Yane expressway. The higher risk areas are located in Xingren-downstream section of Beijing-Tibet expressway (G6), Zhongwei section of Dingwu expressway (G2012), Gunquan section of Beijing-Tibet expressway (G6) and Qingtongxia section of Wuma expressway (G1816). The medium risk areas are located in Huinong section of Beijing-Tibet expressway (G6), southern section of Yinchuan ring expressway, Ningdong section of Qingyin expressway (G20) and Taiyangshan-Maerzhuang section of Dingwu expressway (G2012). The dust risk is generally low in Wuzhong section of Beijing-Tibet expressway (G6), Wuzhong section of Yinkun expressway (G85), Tongxin south section of Fuyin expressway (G70) and Ningxia section of Qinglan expressway (G22), etc.
An Overview of Sustainable Highway Infrastructure Development in Yunnan, China
Authors: Zhang Junjie
Published: September 2020

Highway infrastructure development in Yunnan Province remains a top priority for the Chinese Government, the aim is to improve access to neighbouring countries and support economic growth and social development in the province. While the social and economic benefits of highway infrastructure projects are indisputable, sustainable performance still leaves room for improvement in Yunnan. In an effort to promote a more sustainable approach to decisions relating to highway infrastructure projects, this paper explore the critical issues associated with sustainable highway infrastructure. Firstly, reviewed the economic, social and environmental background of Yunnan, and explain the functions of highways in its socio-economic development. After a brief overview of the conditions and future demands for highway infrastructure in Yunnan, analysed the challenges of building highways in a sustainable way.
Research on Structural Design of Friction Test Based on Finite Element Analysis Heory
Authors: Liu Xiao
Published: September 2020

The thesis uses the ring upsetting method to study the determination of the friction coefficient in volume forming. Use finite element analysis to determine a set of friction coefficient calibration curves, and use the ring upset test to determine the percentage change rate of the ring inner diameter. The relationship curve between the ratio and the compression percentage of the ring height. By comparing the curves, the friction coefficient between the mold material and the forming material is obtained. The friction coefficient between the 6A02CZ material and the steel was determined when the 6A02CZ material was volume shaped in the steel mold. The friction coefficients of the 6A02CS material in the absence of lubricants and lubricants were 0.325 and 0.3, respectively. Studies have shown that the method of combining the finite element method and the ring upsetting test is more suitable for the finite element analysis in plastic volume forming.
Research on Electrochemical Molecular Imprinting Sensor of P-Feco Nanoparticles
Authors: Li Lei , Zheng Bixuan , Tang Mingguo , Feng Junchuang , Huang Kun , Liu Yile
Published: September 2020

The electrochemical sensor is based on the principle of electrochemistry, which connects the concentration change of the tested component with the electrochemical signal. So as to provide real-time information of chemical components in the detected system. When electrochemical method is used to detect the tested object, it has the advantages of relatively simple detection process, fast detection speed, high sensitivity and low cost, so it has become a research hotspot in the field of analysis. In this paper, five preparation methods of MIPs are introduced, which have the characteristics of high affinity and stability. Then, the electrochemical sensor is constructed by molecularly imprinted technology combined with nanomaterials. It is a simple and convenient electrochemical sensor to detect the metal synthetic materials closely related to people’s health in life. The surface current density of Nb2O5 / GO composite was increased by using FeCo nanoparticle material, and molecular imprinting technology was used. On the one hand, the carrier properties of composite materials are used. On the other hand, FeCo nanoparticles, which enhance the junction of molecularly imprinted and composite materials, are a kind of nanocomposites with many excellent properties. It has high activity of electrochemistry catalysis, high current density on the surface of electrode and long-term stability.
Research Progress on the Photoelectric Properties of Indium-Doped Cadmium Oxide Transparent Conductive Films
Authors: Shi Xiongfei
Published: September 2020

Indium-doped cadmium oxide (CdO: In) thin films have excellent photoelectric properties, and have broad application prospects in the fields of photoelectric devices, enhanced spectroscopy, and the like. In recent years, the influence law and internal mechanism of various preparation technologies and process conditions on the photoelectric performance of CdO: In thin films are still one of the research hotspots. The preparation methods of CdO: In transparent conductive thin films were reviewed, the effects of various preparation process conditions on the photoelectric performance of the thin films were discussed, and the future research directions of CdO: In thin films were given.
Isolation and Identification of Bird Viruses in Wetland Ecology
Authors: Li Yong , Zhang Hanping , Chen Guang
Published: September 2020

In order to study the occurrence of Newcastle disease virus (NDV) in wild birds of Honghu wetland in Hubei, we collected wild bird feces samples in the wild bird habitat of Honghu in Hubei in the winter and spring of 2017 ∼ 2019. By SPF chicken embryo isolation, hemagglutination-positive samples were identified by RT-PCR. A total of 38 NDV and 3 mixed viruses including NDV and avian influenza virus (AIV) were detected. The results showed that the NDV positive rate in wild birds was about 1%. These monitoring results lay the foundation for further understanding the status of NDV carried by wild birds and formulating corresponding preventive measures.
Application and Research Based on Green Landscape Materials in Interior Design
Authors: Li HuiJuan
Published: September 2020

Because indoor building materials are not environmentally friendly or the decoration methods are not reasonable enough, it poses certain harm to human health, and there are also problems such as waste of resources. With the proposal of the green economy and sustainable development strategy, the application of green building materials has gradually been valued. Nowadays, people pay more attention to environmental protection and health care. As a bamboo with low carbon and environmentally friendly materials, it is also the first choice for interior design materials. As an energy-saving and environmentally friendly material that can replace traditional building decoration materials, bamboo materials can not only improve the comprehensive utilization of resources and energy, but also reduce the pollution caused to the environment. Nowadays, bamboo fiber, bamboo charcoal and other health care materials have entered our lives, so the use of bamboo materials in interior design will have great potential for development. This paper analyzes bamboo functional materials as a case, and analyzes the advantages and disadvantages of bamboo artificial materials in modern interior design. From the perspective of design, it discusses how to exert the functional advantages of bamboo materials, and hopes to play the role of bamboo in the decoration industry in the future.
Study on the Variation of Microbial Diversity during the Fermentation of Potato Liquor Based on Biolog ECO Technology
Authors: Yang Liuwei , Lin Qiao , Yang Yuxin , Zhao Shudong , Ren Yanling , Chen Yao , Luo Bangzhou
Published: September 2020

There are many kinds of microorganisms in the fermentation process of potato liquor. Using the technology of Biolog Eco, the changes of microbial diversity in different fermentation periods were studied. The results showed that the AWCD value of microorganism in the fermentation process of potato liquor was increasing, and the AWCD value of the sample on the sixth day of fermentation was higher than that of other fermentation time samples. The results showed that the values of dominance index and diversity index of the samples on the sixth day of fermentation were higher than those of the samples in other fermentation periods, but the overall difference was not significant; the value of richness index of the samples before loading was the highest, and the value of richness index decreased after the start of fermentation, and the difference in the later stage of fermentation was small. The utilization of various carbon sources by microorganisms showed that in the process of potato liquor fermentation, microorganisms mainly used carbohydrate, polymer and amino acid carbon sources, but less used carboxylic acid, amine and phenolic acid carbon sources. The results of principal component analysis of microbial community showed that the highest carbon source was D-xylose / pentanose, and the lowest carbon source was D, l-α-Glycerin phosphate.
Potato wine Brewing Process Optimization by Response Surface Analysis
Authors: Lin Qiao , Qiu Ting , Liu Xiaoyan , Liu Junhua , Li Cheng
Published: September 2020

The volatile aroma components in potato wine were detected by static headspace-gc-ms with potato wine as raw material. The effects of equilibrium temperature, equilibrium time, sampling amount and NACL addition on the number of effective peaks of aroma components in potato wine were studied by single factor experiment. Then the detection conditions were optimized by Orthogonal test. The results showed that under the conditions of 0.2 g NaCl addition, 6 mL sampling, 35 min equilibrium time and 40 °c equilibrium temperature, the number of effective peaks was 15, which was more than 5 aroma components before optimization. It laid a solid foundation for the establishment of a rapid and simple method for the determination of aroma components in wine.
Fatigue and Recovery of Wushu Athletes Based on Fatigue Damage Model
Authors: Yu Xue
Published: September 2020

The problem of sports injury and rehabilitation has always been a hot topic in competitive sports. With the continuous development of martial arts requirements and competition system, competitions are increasingly fierce and special technical requirements are more stringent. Exercise-induced fatigue can not only cause the decline of athletes’ body ability, but also lead to the occurrence of sports diseases and sports injuries. Only by understanding the mechanism of fatigue, understanding the body’s recovery process, recovery methods. Only in this way can we effectively improve our athletic performance and prolong our athletic life. The increase of training difficulty and intensity leads to the occurrence of sports injury more and more frequently, so the rehabilitation and recovery of athletes after injury is particularly important. According to the characteristics of sports fatigue of Wushu Athletes in sports training competition, this paper puts forward the means to eliminate the physical and psychological fatigue of Wushu athletes. In order to improve martial arts training, improve the competitive ability of athletes and improve the health of athletes to provide help.
Adsorption Characteristics of Ethyl Paraben from Aqueous Solution Using Rice Husk Biochar
Authors: Guo Meng , Chen Wenjing , Ru Han , Yang Lili , Zhang Yu
Published: September 2020

The rice husk was used as raw material to prepare the biochar adsorbent at 300°C, 400°C and 500°C, which were named BC300, BC400 and BC500. Ethyl paraben was subject to batch adsorption in aqueous medium by the prepared rice husk biochar. The results of adsorption experiments show that the preparation temperature of biochar significantly affects its adsorption effect on ethyl paraben. The adsorption capacity of ethyl paraben from three kinds of biochar was BC500 > BC400 > BC300. In addition, the initial concentration of ethyl paraben in waste water, the temperature and time of adsorption can also affect the adsorption effect. The reaction reached adsorption equilibrium after 270min. The results showed a theoretical basis for the removal of organic pollutants such as ethyl paraben.
Research on the Evaluation Model of Multi-objective Optimal Allocation of Water Resources in Guizhou Province
Authors: Wang Huan , Mei Zaimei
Published: September 2020

Aiming at the characteristics of multiple water sources and multiple users in Guizhou’s urban water system, this paper establishes a multi-objective allocation model of urban water resources. The paper uses multi-objective programming to solve the model, and analyzes the impact of different target weights on the water resources allocation results of Guizhou Province in the fuzzy multi-objective decision model. The results show that the optimization model and fuzzy decision are reasonable and feasible.
Design and implementation of code system for measuring instruments
Authors: Hu Chang , Wu Yanan , Zheng Ying , Zhang Xiao
Published: September 2020

This article introduces the preparatory preparation, structural principles, development process, application effects and existing problems of the mandatory verification measuring instrument code management system, and comprehensively expounds the birth, development and mature process of the first mandatory verification measuring instrument code management system in China.
Design and implementation of Vibration Detecting System of Ship-borne Radar
Authors: Tao Min , Zhang Hao , Wang Yu
Published: September 2020

Although redundancy design has been adopted by measure angle computer (MAC), but the switches between the host and the backup were by mankind which can’t catch up with requirement of system real time. This paper analyses the task of primary-backup switching and confirm the time of auto switching are system fault and communication interruption. It proposes a new strategy by using the characteristic of dual -network of MAC by which add fault status words in net send data bags and changes thenet send time series.This strategy doesn’t need change hardware and only last one frame data on switching process which great enhancing the reliability of MAC.
Real-Time Object Detection based on Divergent Activation
Authors: Liang Hui , Wang Yueyuan , Ma Yuan , Liu Kewen
Published: September 2020

Object detection is a research hotspot in the field of computer vision and has significant research value in the fields e.g. human-computer interaction, video surveillance, automatic driving, face recognition, medical imaging and etc. This paper proposes a novel real-time object detection algorithm based on YOLOv2 and divergent activation which aims to extract semantically complementary and discriminative features. The introduced divergent activation mechanism can be divided into differential divergent activation and hierarchical divergent activation that obtains the spatial complementary features by fusing different spatial distribution information of objects at the same level and activates a complete range of objects by fusing complementary semantics of objects from different levels, respectively. Experimental results on PASCAL VOC2007 and PASCAL VOC2012 show that our proposed algorithm reached 81.0% on mean average precision(mAP), indicating the effectiveness of the proposed algorithm.
Economic Adaptation Grade Evaluation of Integrated Transport System Based on Matter-Element Extension with ANP
Authors: Zhang Jinhui
Published: September 2020

Based on the concept of coordinated development between transportation and economy, a set of evaluation index system is constructed from total scale, transportation structure and service level, whichis to measure economic adaptability of transport system. Then Matter-Element Extension with ANP algorithm is put forward to calculate the economic adaptation grade of integrated transport system with empirical analysis of Yunnan province, which has verified that this model is applicable.
8-Bit NCL Asynchronous Multiplier based on Radix-4 Booth Algorithm
Authors: Deng Weixiang , Cheng Wenxiang , Cheng Jie , Ni Leibin , He Anping
Published: September 2020

Multiplier is one of the key modules in signal processing circuit and processor, and its robustness is especially important in the complex environment. Due to the lack of robustness of single-rail logic, a Null Convention Logic (NCL) Multiplier based on the Radix-4 Booth 8-bit fast parallel structure is proposed in this paper. The Radix-4 Booth algorithm reduces the number of partial products to lower the computing time, and the “sign generate” algorithm simplifies sign extension bitcomputation. In order to demonstrate the effectiveness of the proposed hardware implementation scheme, we implement an improved 8-bit NCL multiplier on vivado platform, the speed of which is 14% higher than that of the traditional Wallace NCL 8bit multiplier.
Design of Emergency Evacuation Scheme for Louvre
Authors: Zhang Zhuoqun , Wang Chen , Wang Yinzhe
Published: September 2020

In this paper, we used four steps in analyzing the optimal model of evacuation within the Louvre. For step 1, we refer to the traffic concept in the Dynamic Network Flow Model to define the export throughput. For step 2, considering that the original floor plan is segmented with pixel points as a unit with high complexity and little meaning, we simplify the floor plan when the model is guaranteed to be true. For step 3, we first mark the exit node, make its dual graph, and draw the point chain containing the exit node, which can divide the original image into several pieces according to the area. Breadth-First Search from each egress node can mark themselves with color, ownership and other information. For Step 4, in order to get the optimal segmentation which satisfies the definition of reasonable segmentation edge set, we use Genetic Algorithm to solve the optimization problem. A sequence consisting of the sequence numbers in the set of Edge-Cut is encoded as a gene in the Genetic Algorithm and iterated by the Theory of Chromosome Cross-Variation to obtain an optimal solution. Finally, we have designed a scientific and complete emergency evacuation plan.
Study on the Establishment and Optimization of Sandcastle Infrastructure Model
Authors: Han Zhixuan , Gao Yuqiu , Ren Shuyu , Chen Depin
Published: September 2020

Sand castle was created by the tourists on the beach for fun, then how to set up a stable sand castle under the condition of waves and tidal waves to get the honor of “sandcastles builder” has been their main concern. In this paper, considering the formation principle of sandcastle and the effect of the uncertain factors and the effect on the stability of the sand castle, the sandcastle infrastructure model is established and the 3D geometric model of the sand pile is optimized step by step. We start with sand heap discretization, the impact process of waves and tides is regarded as the external force acting on the sand, and the stress analysis shows that there are three kinds of stress conditions: no external force, one external force and two external forces. Then from the point to surface, the stress energy of the whole layer of sand is analyzed according to the two aspects of energy transfer dissipation and internal force failure dissipation. The optimal bearing capacity plane is approximately pentagon by annealing algorithm. Finally, from the surface to the solid, taking the self-weight of the sand pile, the effective external force action and the seawater erosion action as the constraint conditions, the optimal tilt angle of the plane stack is calculated to be 36.87° by measuring the risk degree of the overlaying slope Angle. Therefore, the oblique pentagonal body with an inclination angle of 36.87° is relatively stable.
Application of artificial intelligence in data processing
Authors: Jiang Xingnan , Wang Yueying , Deng Bowen
Published: September 2020

Aiming at the problems of large scale, variety and difficulty in data analysis, a fuzzy neural network algorithm based on artificial intelligence technology is proposed to analyze and process data. This algorithm combines the learning characteristics of the neural network and the fault-tolerant advantages of the fuzzy system, uses k-man’s algorithm to cluster the sample input space, generates the membership matrix, and uses the neural network algorithm to train the data, and finally completes the target output. The analysis results can meet the existing engineering application requirements. The research content of this paper is of great significance to improve the utilization level of power engineering data and engineering management ability.
Application of neural network based on self-organizing incremental learning in anti-interference
Authors: Hu Shaodong , Wu Xuechen , Xue Bo
Published: September 2020

In view of the shortcomings of traditional neural network in the actual information fusion process, a data anti-interference method based on self-organizing incremental learning neural network is proposed, which is used to cluster and represent the dynamic input data online without prior knowledge. In this paper, the neuron distribution, dynamic node adjustment, topology representation and denoising process of the network are described in detail. Finally, the multi-source heterogeneous data collected by the sensor can be self-adaptive dimensionality reduction and self-organization learning. At the same time, it has strong robustness to noise data, so that it can continuously learn new patterns in data flow. SOINN model is suitable for supervised learning, associative memory, pattern-based reasoning, manifold learning and other learning scenarios. It can also be extended to the application fields of unbalanced, highly complex and nonlinear big data prediction.
Case-based Analysis of Discrimination in Police Surveillance Scene Regarding Facial Recog
Authors: Chen Tingyao
Published: September 2020

The application of facial recognition technology in police surveillance scene is justified, but itwill result in discrimination. In this paper, the first case of facial recognition in the world, R (Bridges) v Chief Constable of South Wales Police, is taken as the starting point, and the problems of algorithmic discrimination and indirect discrimination reflected in this case are discussed while analyzing the case, and the author will predict what kind of method the plaintiff may take in the appeal.
Data-parallel clustering algorithm based on mutual information mining of joint condition
Authors: Huang Changjiang
Published: September 2020

In order to improve the reliability service ability of the cloud storage database, the data parallel clustering process is carried out, and the data parallel clustering algorithm based on the mutual information mining of the joint condition is proposed. a large data configuration structure model of a cloud environment virtual resource is constructed, data compression and characteristic reconstruction are carried out by adopting an online dictionary learning method, a regression analysis of the cloud environment virtual resource configuration data and a point cloud structure recombination are carried out in combination with a non-linear statistical sequence analysis method, the parallel characteristic scheduling of the large data of the virtual resources of the cloud environment is realized, the mutual information feature quantity of the joint condition is mined, the characteristic quantity of the mining is subjected to the characteristic filtering and the attribute set merging processing by adopting the fuzzy C-means clustering algorithm, by using the self-adaptive optimization algorithm, the automatic retrieval of the fuzzy clustering center is carried out, and the parallel clustering optimization of the large data is realized. The simulation results show that the classification performance of the large data clustering of the cloud environment virtual resources is good, the property classification and fusion capability is high, and the error rate is lower.
Study on the preparation technology of Sanqi Shangyao smeared films for percutaneous absorption
Authors: Liu Shi jun , Zhang Pan , Tang Zhi shu , Zhang Yu , Sun Jing , Song Zhong xing , Cui Chun li , Liu Hong bo , Xu Hong bo
Published: September 2020

Objective: The dosage form of Sanqi Shangyao tablets was reformed and made smeared films. Methods: PVA-124 was used as film forming material, glycerol as plasticizer, Twain 80 as surfactant and azone as penetration enhancer. On the basis of the single factor test, the orthogonal test L9 (34) was used to screen the matrix prescription, and the optimum matrix ratio was obtained by investigating the fluidity, color, flexibility, film forming time and the appearance uniformity of the coating agent. Results: The best substrate ratio was Twain 80 0.5 g, PVA-124 4.0 g, glycerol 2.0 g, azone 0.3 g. Conclusion: The proportion of the smeared films prepared by orthogonal test is stable. The film forming time is short, and the preparation process is simple and feasible.
Acoustic target recognition algorithm based on particle swarm neural network
Authors: Liu Yalei , Gu Xiaohui
Published: September 2020

In order to improve the automatic recognition rate of acoustic targets, this paper conducts research on acoustic target recognition algorithms based on particle swarm neural network. Firstly, the mathematical description of the particle swarm optimization algorithm is described, and the initial parameters and algorithm flow of the particle swarm optimization algorithm in the experiments in this paper are given. Second, the design includes the central processor, power supply, signal conditioner, filter, trigger circuit, and state. Acoustic target recognition prototypes of display circuit, memory, target type indication circuit, serial port, crystal circuit, microphone and hardware interface circuit, etc. Finally, using the collected acoustic signals of tanks and helicopters, a semi-physical simulation experiment was designed to carry out target recognition. Experimental research and experimental results verify the effectiveness and stability of the acoustic target recognition system in this paper.
Design and Research on Temperature Control System of Electric Furnace Based on PLC Touch Screen Integrated Machine
Authors: Zhao Haiyu , Zheng Jiashuo
Published: September 2020

With the development of science and technology in China, temperature control system has been widely used in many fields. The emergence of PLC effectively improves the shortcomings of PID control system, optimizes the performance of PID control system, and plays a very important role in promoting industrial production and construction. In view of the design of temperature control system of heating furnace, configuration software and PLC can be used the combination of technology can achieve the goal of furnace temperature control, and it can also monitor the furnace temperature in real time and comprehensively, and then adjust the furnace temperature according to the application requirements. The investment in the process is less, which can reduce the cost to a certain extent, and also has the application advantage of high accuracy. The temperature control system of electric heating furnace is designed in this paper. PLC is mainly used, and the temperature system is controlled intelligently with touch screen. According to the actual situation and cost budget, the controller of this paper chooses Mitsubishi FX2N- 48MR series PLC. In order to achieve intelligent control, it needs to use digital PID control algorithm, which is convenient for the staff to operate Gt1040-qbbd-c series touch screen is used to realize human-computer interaction. The system can be started and stopped. The touch screen for temperature setting can be very simple to operate. The temperature change can also be visually displayed and monitored, and the whole system can be automatically set.
Electronic circuit design of stepping motor based on 51 single chip microcomputer
Authors: Jia Jianwei , Xue Bo , Wang Yimeng
Published: September 2020

With the development of automatic control system and the improvement of high-precision control requirements, stepping motor plays an increasingly important role in various automation equipment. The stepping motor control system designed in this paper takes STC89C51 as the core, LCM12864 as the display module, and eight independent keys as the control function keys. It realizes the start and stop state, speed and running distance, forward and backward control of the stepping motor, and adds Hall sensor to measure the speed of the stepping motor. Using SCM as the main control chip not only simplifies the hardware circuit, but also reduces the system cost. The system increases the interactive experience between people and machines, and maximizes the economic benefits, saves resources, and can be better applied to the actual daily life.
Influence of Irrigation Canal Construction on the Stability of A Natural High and Steep Slope
Authors: Guo Yanhui , He Jin
Published: September 2020

The excavation and construction of the irrigation canal on a high and steep slope usually change the stress state of the original slope, which may have a serious impact on the stability of the slope. Taking the construction of irrigation canal on a high and steep slope as the research background, the stability of this high and steep slope under natural condition, construction platform excavation and construction of irrigation channel is calculated by Midas GTS NX. The results show that the stability of slope is better in natural state. The excavation of the construction platform of the irrigation canal will cause a certain displacement of the original slope, but will not affect the overall stability of the slope. With the construction of the irrigation canal, the displacement of the slope increases a lot, and the stability of the slope decreases significantly.
A Comparison of Ride Performance of Hydro-Pneumatic Suspension System with Those of Rubber and Leaf Suspension Systems
Authors: Longa Le Xuan , Quynh Le Van , Liemb Nguyen Van , Cuong Bui Van , Tand Hoang Anh
Published: September 2020

The objectives of this study is to compare the performance of the hydro-pneumatic suspension system of heavy truck on cab ride comfort with rubber and leaf springs of suspension systems. To compare the three types of suspension systems, a three-dimensional dynamic model of heavy truck with 15 degrees of freedom (DOF) is established based on Zhou Changfeng model under random excitation of road surface for simulation and analysis. The root mean square (r. m. s) acceleration of the vertical cabin, pitch angle, and roll angle of cabin is chosen as objective functions. Matlab/Simulink software is used to simulate and calculate the values of objective functions. The ride performance of the hydro-pneumatic suspension system on vehicle is analyze and compared to two other supension systems when vehicle operates under different operating conditions. The results show that the values of objective functions with the hydro-pneumatic suspension system are significantly reduced in comparison with the rubber and leaf suspension system. The ride performance of Hydro-pneumatic suspension system is much better than that of the rubber and leaf suspension systems.
Status and Development Trend of Active Sub-arrays Structure Design in Active Phased Array Antenna
Authors: Xiao Rui , Jianga Shouli , Zhongb Jianfeng
Published: September 2020

Active sub-arrays structure design is an important part of phased array radar design. The basic architecture and composition are introduced, especially the different between brick, tile and chip sub-arrays are discussed. Integrated design of radiating unit and sub-array, intelligent health detection system and electromagnetic compatibility, microelectronics and topology optimization design, application of new materials, which considered to be four key technologies, are also pointed out.
Health Management Information System Based On Regression Analysis
Authors: Wang Dong , Chen Xiujuan , Wei Honghe
Published: September 2020

With the improvement of living standard, people’s demand for health is increasing. However, the rapid pace of urban life makes it difficult for most people to stop and pay close attention to their bodies. Even after the hospital examination, it is difficult to achieve stable follow-up and health judgment. On the basis of regression analysis of data, an open source mobile terminal Android platform is used to design a health management information system (APP), which can realize the information sharing between residents and hospitals. The system allows people to know their physical condition instantly, and hospitals can track and advise users.
Research on Design and Application based on Bridge Inspection and Maintenance Scheme
Authors: Tan Lingye , Zhang Ziyang , Wang Xin
Published: September 2020

Under the background of the rapid economic and social progress and development of the market economy in China, the cause of traffic construction has also been built and carried out like a raging fire. there is also a direct relationship between traffic engineering construction and the rapid development of science and technology and the national economy, which plays important technical support and driving role in the development of social and national scientific and technological and economic traffic engineering construction. Under the background of the current market economy with the rapid development of science and technology and the economy, a large number of large-scale bridge designs and buildings have been put into use and obtained the latest bridge scientific detection technology. in the process of bridge construction, the structural complexity of the detection technology and the span of the bridge have been improved to a great extent. This paper mainly discusses the bridge detection technology, specific maintenance, and bridge reinforcement technology in the process of design and construction of all kinds of large bridges, and makes a technical analysis on the maintenance life of all kinds of large bridges, to increase the safety and maintenance life of all kinds of large bridges and promote the realization of their greater economic and social benefits and value at the same time.
Research on rainfall infiltration law and slope stability analysis
Authors: Li Ang , Meng Lingbo
Published: September 2020

Rainfall is an important factor leading to slope landslide. Aiming at the problem of slope stability under rainfall, this paper uses the unsaturated seepage theory to dynamically describe the rainfall infiltration effect, and analyzes the distribution characteristics of pore water pressure of slope soil and the change law of slope water level under the action of rainfall, at the same time, deeply analyzes the law of slope stability changes based on strength reduction algorithm. The results show that: with the passage of rainfall time and the increase of rainfall intensity, the slope infiltration depth gradually increased. At the same time, rainfall increased the groundwater level in the slope, and leaded to increased pore water pressure in the slope soil, and the transient saturation zone gradually formed and expanded, and finally leaded to a significant reduction in slope stability coefficient.
Paper counting display device based on STM32F103 single chip computer
Authors: Gao Lizhen , Jiang Fanmao , Wang Shihao
Published: September 2020

This system uses the STM32F103 single-chip microcomputer as the control center, and the capacitance-to-digital converter FDC2214 collects the current paper value, performs data collection and transmits it to the main control single-chip microcomputer. Methods: Calculate accurate data through Kalman filtering, and accurately calculate and display the number of measured paper sheets on this basis. The device also sets a buzzer to accurately short circuit alarm. The circuit structure of the entire system is simple, and the reliability is high. Results: The system has high precision and fast speed, and can complete the basic requirements and expansion requirements of the problem. Although it is limited by time and venue, it can also have a high reference value for the design of practical applications such as detecting the number of banknotes. Conclusions: Experimental test results show that this design can complete the basic indicators required by the topic and play part of the content. This paper focuses on the hardware design, software design and test result analysis of the system.
Design and Development of a Small-Scale Wind Tunnel for Flow Visualization
Authors: Shamsuddin M S M , Kamaruddin Noorfazreena M.
Published: September 2020

A small-scale wind tunnel model with a length of 100 cm was designed and manufactured for flow visualization. The flow was visualized by using a mini smoke generator developed specialized for this small-scale wind tunnel and used the same principal as the conventional fog generator. To capture the flow motion, several parameters such as honeycomb screens, illumination systems, smoke liquids and fan speeds were varied to illustrate the smoke lines that represent the flow characteristics. The qualitative results based on these various configurations were presented and discussed in this paper with clear visibility for the smoke line intensity at 6 m/s with an airfoil used as the model to effectively demonstrate the flow visualization.
Performance Evaluation of Composite Cross-Arm Structure Under Different Magnitude of Loading
Authors: Mohamad Daud , Beddu Salmia , Syamsir Agusril , Zahari Nazirul Mubin , Abu Seman Sareh Aiman Hilmi , Razali Muhammad Fauzinizam , Abas Aizat , Ng Fei Chong
Published: September 2020

In this paper, the effects of load with increasing factor of safety on the mechanical performance and intra-laminar damage formation of cross-arm structure made up of two different schemes are studied. The composite structure has been numerically modelled by a finite element (FE) model. Research was carried out using a VUMAT subroutine to model intra-laminary damage formation in the analysed composite structure, and Hashin’s failure criteria have been used. This investigation revealed that with a good combination of stacking sequence and ply properties as shown by scheme A which has combination of 90 and 45-degree plies at the both ends and much higher value of ply properties, a safety reserve can be obtained that provides a margin between actual load conditions and those leading to cross-arms structure failure.
Impact of high particulate event on the indoor and outdoor fine particulate matter concentrations during the Southwest monsoon season
Authors: Suroto A , Shith S , Md Yusof N F F , Ramli N A
Published: September 2020

Haze event, also known as the high particulate event (HPE) normally occurs during the Southwest monsoon season due to the high concentrations of atmospheric particulate matters including PM2.5 which are majorly caused by anthropogenic activities such as open forest and biomass burning. The impact of haze, not only on ambient air but also indoor environment, elevates with the emission of particulate matters from local transportation and industrial sources. Polluted indoor environment could impose adverse effects towards the occupants, particularly those categorized in the sensitive group. School children are among the sensitive group whom spend the majority of their time indoors, especially in school classroom and home. The present study aims to determine the indoor/outdoor ratios of PM2.5 during non-HPE and HPE. The concentrations of indoor and outdoor PM2.5 were measured continuously using a direct optical monitor (E-Sampler) and portable environmental beta-attenuation monitor (E-BAM) respectively for 24 hours. The findings revealed that the I/O ratio during HPE (0.35) was higher than the non-HPE (0.26). The Pearson correlation analysis exhibited a significant relationship (p < 0.01) between the indoor and outdoor PM2.5 concentrations with a strong correlation (r = 0.75). Therefore, it is evident that the outdoor concentrations of PM2.5 during HPE inflicted a significant impact on the indoor environment of naturally ventilated classroom due to the high I/O ratio in comparison to non-HPE, in addition to the less practical design of the classroom (open system).
Physical modelling investigation of a 3-stage landslide prevention system: case study
Authors: Md Said M A , Ramli M H , Azmi M , Mohd Azam A S
Published: September 2020

A study was conducted to propose and assess the suitability of a structural design for landslide prevention system consisting of flexible barriers, concrete baffles and rigid barrier. A 1:20 scale model of the landslide system was conducted to observe the impact of a flexible barrier, the concrete baffle configurations and the appropriate rigid barrier height. Soils samples from site were also analysed to identify and characterize the soil properties. The experiments were conducted by varying the soil moisture content of the soils for the flexible barrier and concrete baffles. Results obtained showed that the flexible barrier is permanently deformed when the soil moisture is 26%. The configuration of several types of concrete baffles were studied where for unobstructed flow, the use of two rows of baffles had increased the degree of transverse blockage from 23% to 35% and provided up to 75% run-out distance reduction. A cantilever retaining wall is designed as a rigid barrier to ensure adequate retention and to prevent overflowing if the flexible barrier and concrete baffles failed. The combination of three different barriers was assessed and the result showed that the run-out distance was significantly decreased by 47 percent compared to unobstructed flow.
Experimental investigation on the pull through failure of roof cladding to purlin connection considering overhang roof
Authors: Majid T A , Zaini S S , Muhammad M K A , Nik Ahmad N A S
Published: September 2020

The study on the effects wind loading to the roof cladding and purlin connection has raised a great interest among researchers. In some cases, the failure of roof cladding initiated at the overhang roof was due to the development of uplift force created by the strong wind. However, these studies are limited to the non-engineered building without considering overhang roof. This paper studies the effect of roof cladding types, overhang length and cladding thickness in term of pull through capacity of the overhang roof using simple pull through tests. The tests were conducted on two types of claddings namely, corrugated and trapezoidal roof cladding. In the case of corrugated cladding with 0.28 mm thickness, the specimen with 200 mm overhang length shows the highest pull through capacity with 1.534 kN followed by 300 mm overhang length with 1.083 kN. While, for trapezoidal cladding with 0.35 mm thickness, the 300 mm overhang length recorded the highest pull through capacity at 1.163 kN compared to 200 mm overhang length (1.068 kN). It was noted that shorter length of overhang developed stronger roof cladding to purlin connection. The most efficient connection for roof cladding to purlin connection was found to be 0.23 mm thickness of corrugated roof cladding with 200 mm overhang length.