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design and implementation of experimental teaching network public opinion monitoring system based on Rongmedia Cloud platform

Design and implementation of experimental teaching network p...

引用

International conference on Information systems engineering (ICISE)

作者： Xiulan Duan Faculty of of Literature and Law Wuhan DongHu University Wuhan China

Aiming at the public opinion management needs of Chinese college students, this paper designs a fully-functional experimental teaching network public opinion monitoring system based on Rongmedia cloud platform. Based on Hadoop technology, the data acquisition and data processing module of the system is designed, and the Hdfs distributed file management system of data storage is constructed, which realizes the efficient storage of public opinion data information. MapReduce programming model and semantic analysis algorithm in cloud computing are used to realize topic discovery and public opinion analysis module, so as to complete the analysis of public opinion data information. After testing, the system has stable operation, accurate data analysis and easy deployment, which can meet the needs of public opinion monitoring and management.

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design and Evaluation of Plant Leaf Disease Detection Based on the CNN Classification System 8th

Design and Evaluation of Plant Leaf Disease Detection Based ...

引用

8th International conference on Computers, Management and Mathematical Sciences, ICCM 2022

作者： Ramakrishna, C. Kumar, S. Joy Venkatesh, N. Reddy, Kumbala Pradeep Telangana Hyderabad India Department of CSE St. Mary’s Engineering College Telangana Hyderabad India Department of CS AI University Telangana Warangal India Department CMRIT Telangana Hyderabad India

ISBN: (纸本)9783031511660

To increase agricultural growth, there is a requirement for the detection of plant leaves in the starting stage. In agriculture, disease detection in plants is an important task and having diseases is quite a common thing. To identify the diseases in plants, a continuous observation is needed, which consumes time and necessitates significant human efforts. Programming technique is used to solve this problem and make it as simple as possible. this chapter proposes the design and evaluation of plant leaf disease detection based on the convolution neural network (CNN) classification system, which contributes to a safe, accurate, and reliable system for disease detection in leaves. Here, k-means clustering algorithm and Gray Level Co-occurrence Matrix (GLCM) are used for feature extraction. the CNN Classification technique is used for leaf disease detection, and the accuracy rate is calculated. the leaf disease detection based on CNN presented in this chapter is compared with existing methods and parameters in the result analysis. this system differentiates diseases in plants and provides accurate classification and compares it with existing methods. © the Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Convolution

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Study on Scheme design and Optimization Strategy of Non-End-Bearing Piled Raft Foundation for Super High-Rise Building 8

Study on Scheme Design and Optimization Strategy of Non-End-...

引用

8th International Technical conference on Frontiers of Hydraulic and Civil engineering Technology, HCET 2023

作者： Liu, Xiaoping Zhang, Xindong Ren, Baoshuang Xie, Wei Construction Group Co. Ltd. of China Communications Construction Company China

ISBN: (纸本)9781643684642

Taking a super high-rise building as an example, this paper analyzes the determination principles of pile diameter and pile length, characteristic value of vertical compressive bearing capacity of a single pile, and pile arrangement scheme of non-end-bearing piled raft foundation under the core tube. the quick estimation method of pile number under the core tube, and characteristic value of vertical compressive bearing capacity of a single pile is presented at the stage of pile foundation scheme design. Four pile foundation schemes with different pile diameters and different forms of pile arrangement are analyzed and verified by finite element method, and the results show that the quick estimation method is feasible. At the same time, based on the above analysis and optimized design of pile foundation stiffness to reduce differential settlement of pile foundation, the design optimization strategy of reducing the raft thickness and reinforcement under the core tube is put forward. © 2023 the Authors.

关键词： Pile foundations

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analysis of constructional errors of in-service spatial prestressed steel structures 8th

Analysis of constructional errors of in-service spatial pres...

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8th International conference on Structural engineering, Mechanics and Computation (SEMC)

作者： Zhang, A. L. Wang, J. Zhao, X. Zhang, Y. X. Beijing Univ Civil Engn & Architecture Beijing Adv Innovat Ctr Future Urban Design Beijing Engn Res Ctr High Rise & Long Span Prestr Beijing Peoples R China Beijing Univ Civil Engn & Architecture Beijing Adv Innovat Ctr Future Urban Design Beijing Peoples R China

ISBN: (纸本)9781003348443

the constructional errors of spatial prestress steel structures can greatly impact the structural stability and safety. though structural health monitoring techniques are well developed, the data analysis integrated with the structural performance evaluation require a lot of efforts. the project conducts sensitivity study on constructional errors including deviations of joints, prestress loss of prestressed cables, and deformation of struts. the research data are carefully extracted from a high-fidelity laser measurement point-cloud model of a typical spatial prestressed steel structure. Data lightweight process is conducted to the point-cloud model where key nodes are automatically marked and stored according to the design BIM model. Constructional errors are efficiently characterized and compared with the design model through adapted pattern recognition algorithm. the statistical analysis is conducted to the constructional errors where the statistical models are obtained for future reliability study.

关键词： Errors

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Mechanism analysis and Solutions to Tap-Changers Frequent Action Problem of Gaoling Back-to-Back HVDC 8

Mechanism Analysis and Solutions to Tap-Changers Frequent Ac...

引用

8th International conference on Energy System, Electricity, and Power, ESEP 2023

作者： Yin, Jian Pu, Ying Li, Qian State Power Economic Research No. 18 Binhe Avenue Beiqijia Future Science City Beijing102209 China Xu Ji Electric Co. Ltd. No. 1298 Xuji Avenue Henan Province Xuchang City461000 China

ISBN: (数字)9781510679801

ISBN: (纸本)9781510679795

In the Gaoling back-to-back HVDC, there are frequent actions of the converter transformer tap-changer during the power adjustment period. the number of tap-changer actions is significantly higher than the normal design value, and there is invalid reciprocating adjustment of the tap-changer, which brings serious challenge to safe operation of equipment. this paper first studies the principle of tap-changer control of a back-to-back HVDC, and further analyzes the frequent action mechanism of the tap-changer based on the actual operating data of the Gaoling back-to-back HVDC. the RTDS simulation test reproduces the frequent action of the tap-changer, and a solution to control the dead zone reference value by changing the firing angle of the tap-changer on the rectifier side according to the power change state is proposed. Finally, the effectiveness of the solution is verified by the RTDS simulation test. © 2024 SPIE.

关键词： Electric rectifiers

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Digital transformation path and benefits expectation analysis in highway industry 8

Digital transformation path and benefits expectation analysi...

引用

8th International conference on Traffic engineering and Transportation System, ICTETS 2024

作者： Li, Wanjun Gao, Jian Yin, Sheng Huang, Yeran Li, Hengyu Zhu, Jierui Guo, Yuqi Research Institute of Highway Ministry of Transport Beijing100088 China State Key Lab of Intelligent Transportation System Beijing100088 China

ISBN: (数字)9781510686298

ISBN: (纸本)9781510686281

After years of evolution, digitalization has been deeply integrated into various sectors, yielding substantial benefits. the advantages of digitalization can be broadly categorized into two types. the first type encompasses the direct gains achieved through digital technologies, such as the optimization of production processes and reduction of operational costs in the manufacturing industry. the second type involves changes in industry or corporate management models driven by digitalization, with benefits that are more about transforming the industry ecosystem and indirect gains that are both creative and uncertain. the decision to undertake digital transformation within an industry or company hinges on whether the value and benefits align with expectations, which is also a crucial measure of the success of digital transformation. this article will focus on the pathways of digital transformation in China's highway industry and the value and benefits derived from it. through the analysis of survey questionnaires, it is discovered that there is a general consensus among different types of enterprises in the highway industry regarding the benefits of digital transformation. the study also establishes a classification system for the value and benefits of highway digitalization and using the example of highway construction survey and design, develops a reference calculation model for value and benefits to support the industry in conducting benefit assessments concurrently with the digital transformation process. © 2024 SPIE.

关键词： Traffic surveys

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Particulate Damping Effects on Tribological Properties During Hard Boring 8th

Particulate Damping Effects on Tribological Properties Durin...

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8th International and 29th All India Manufacturing Technology , design and Research conference, AIMTDR 2021

作者： Lawrance, G. Paul, P. Sam Dhas, D. S. Ebenezer Jacob Benny, D. Raskin Vignesh, J. Hari Department of Mechanical Engineering Karunya Institute of Technology Sciences Coimbatore641 114 India

ISBN: (纸本)9789811938658

In the boring process, the productivity in the manufacturing sector is affected mainly due to its overhanging length. In this study, an attempt is made to enhance the tribological properties using a particulate damper. A particulate damper is offered using particles inside the tool which dissipate energy through friction and inelastic collisions. A 27 run Taguchi technique was conducted in a cutting experiment with varying particle size, particle material, and particle fillings and followed by an analysis of variance on tribological properties. the results were compared to conventional boring tools and found the particle damper can enhance the tribological properties effectively. © 2023, the Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Particle size

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Surface Modification of Al-7075 Alloy by Electro-Discharge Coating Process Using SiC/Cu Green Compact Electrode 8th

Surface Modification of Al-7075 Alloy by Electro-Discharge C...

引用

8th International and 29th All India Manufacturing Technology, design and Research conference, AIMTDR 2021

作者： Ranjan, Lokesh Kumar Chakraborty, Sujoy Mandal, Uttam Kumar Dey, Vidyut Jha, Kanishka Department of Production Engineering NIT Agartala Agartala India

ISBN: (纸本)9789811945700

In this study, modification of the Al-7075 surface has been presented. Powder compact green electrode which acts as a tool has been made from intermixing of SiC and Cu powder in different proportions. the main input parameters are compaction load, current, and tool composition, while the tool wear rate (TWR) and material deposition rate (MDR) are the output parameters. the experiment is designed based on the Taguchi L9 orthogonal array. Effects of input parameters on output responses, ANOVA analysis, and surface characterization of the coated samples have been examined and explained in this research work. the results of SEM, XRD, and EDS confirm the formation of the layer which contains the different constituents of tool materials on the workpiece surface with better mechanical properties. © 2023, the Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Deposition rates

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Safety Evaluation of the Reduction Factor for CFFTs Columns Without Longitudinal Reinforcement 8th

Safety Evaluation of the Reduction Factor for CFFTs Columns ...

引用

8th International conference on Advanced Composite Materials in Bridges and Structures, ACMBS 2021

作者： Khorramian, Koosha Oudah, Fadi Sadeghian, Pedram Department of Civil and Resource Engineering Dalhousie University 1360 Barrington Street HalifaxNS Canada

ISBN: (纸本)9783031096310

the unique properties of concrete-filled fiber reinforced polymer (FRP) tube (CFFT) makes it an efficient system for use in the construction industry. It can provide confinement, improve the axial load carrying capacity, and can be used as a formwork for casting concrete. A task group was formed by ACI 440-0J to develop a detailed design procedure for CFFTs for building applications. A reduction factor of 0.65 was proposed by the task group based on ACI 440 reduction factor for FRP confined concrete columns. In this research, a reliability analysis was conducted using Monte Carlo (MC) simulation and first order second moment (FOSM) method to calculate the reliability index associated with the proposed reduction factor of 0.65 and to compare it with established target reliability indices. the CFFT statistical parameters were based on 45 experimental tests found in the literature. the reliability analysis showed that the FOSM and MC methods yield comparable results with a reliability index of 3.5 corresponding to a reduction factor of 0.65. It is recommended to conduct further tests to increase the confidence level of the safety evaluation. © 2023, Canadian Society for Civil engineering.

关键词： Reliability analysis

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A Pumpless Layflat Tube-Based Pneumatic Bending Actuator for Soft Assistive Glove 8

A Pumpless Layflat Tube-Based Pneumatic Bending Actuator for...

引用

8th IEEE International conference on Advanced Robotics and Mechatronics, ICARM 2023

作者： Lin, Senyuan Liu, Hao Wu, Changchun Chen, Yonghua The University of Hong Kong Department of Mechanical Engineering Hong Kong

ISBN: (纸本)9798350300178

Layflat tube (LFT) is a soft tube that is pressed flat for easy winding onto a spool and continuous use. When inflating an LFT, the width of the FLT will contract, and the flat side of the FLT will expand. Based on this feature, a layflat tube-based pneumatic bending actuator (LFTPBA) is proposed and used for finger actuation in soft robotic glove design. Five LFTPBAs are mounted on a fabric glove to assist finger flexion. To eliminate noise and vibration of a normal pump system, a bellow actuation method is proposed. the finger flexion angle and bending speed can be controlled by motors directly. A mathematical model is developed to investigate the relationship between the LFTPBA flexion angle and bellow compression displacement. Besides, a finite element analysis of the LFTPBA bending trajectory versus pressure increase is also conducted. Compared with a fabric-based pneumatic bending actuator, the proposed system can generate 57% more blocked tip force (from 9 N to 14.13 N). A prototype assistive glove has been developed to demonstrate various grasping operations via a hand model. © 2023 IEEE.

关键词： Pneumatics

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