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关键词： Subsequent filling mining   Surface movement and deformation   Probability integral method   MATLAB   PCA-GA-BP neural network  

摘要： Guizhou is a mountainous region that faces numerous engineering challenges during the mining of thick inclined ore bodies, including complex geological conditions, limited monitoring systems, and insufficient on-site monitoring. Developing intelligent methods for predicting surface movement and deformation in mining areas under such geological conditions is critical for preventing ecological damage, safeguarding lives and property, and ensuring safe mining operations. This study focuses on the subsequent filling mining of inclined thick ore bodies as the engineering context. Using the probability integral method, an integrated system was developed in MATLAB App Designer to calculate and predict the surface movement and deformation during subsequent filling mining. Industrial validation confirmed the feasibility of employing an artificial neural network to predict surface movement and deformation. The predicted results indicated maximum settlement values of -38.37 and - 39.73 mm in the strike and inclined main sections, respectively, with a prediction accuracy of 90.56%. The predicted settlement values were generally lower than the measured values. Therefore, correction coefficients of 1.26 and 1.40 are recommended for the strike and inclined main sections to enhance prediction accuracy.

关键词： 房屋建筑   工程监理   问题   创新措施  

摘要： 近年来,我国的工程建设越来越多,对监理的应用也越来越广泛.在施工过程中,房屋建筑工程极易出现质量与安全问题.基于此,监理单位应重视房屋建筑工程现场质量控制,加强现场监理工作,不断提高现场质量控制水平.本文首先分析监理意义,其次探讨房屋建筑工程监理管理的问题,最后就房屋建筑工程监理管理的创新对策进行研究,旨在推动建筑业的可持续发展.

摘要： 安吉游戏作为一种创新的幼儿教育模式,近年来受到学前教育领域工作者和家长的广泛关注.这种教育模式主张将游戏作为幼儿学习和发展的主要途径,让幼儿在自主、自由与开放的游戏环境中探索和学习,以促进他们的全面发展.基于此,本文分析了安吉游戏对大班幼儿的教育价值,探讨了面向大班幼儿的安吉游戏实施要点,旨在为安吉游戏的应用和推广提供一定的策略参考.

关键词： polyominoes   symmetry class   combinatorial geometry   colouring methods   modular arithmetic   MATLAB  

摘要： Polyominoes are shapes formed by joining edge-connected unit squares in the square lattice. We review their symmetry classification using dihedral group actions and enumerate their distinct, coloured variants, called "chrominoes", which arise when polyominoes are placed on a C-coloured checkerboard. This colouring method, defined via modular arithmetic, assigns colours cyclically in both directions. Our main theoretical result establishes that for C=2, a polyomino has either one or two chrominoes, depending on whether it has a colour-reversing symmetry. Additionally, we introduce a new classification of two-colour chrominoes into 15 symmetry-based classes. For C >= 3, the number of chrominoes is a small integer multiple of C, determined by the polyomino's symmetry class and the symmetries of the infinite C-coloured checkerboard plane. These findings have applications to integer linear programming methods for polyomino tiling problems. We validate our theoretical results through exhaustive search in MATLAB and illustrate them with examples.

关键词： 钢筋   抗拉强度   误差   不确定度  

摘要： 钢筋抗拉强度是衡量钢筋性能的重要指标之一,直接影响工程质量和建筑物的安全.本文旨在通过对钢筋抗拉强度检测中的误差进行分析,提出提高检测精度的方法.同时进一步阐述不确定度在钢筋抗拉强度检测中的应用,并提出减少不确定度分量影响的措施.因此在钢筋抗拉强度检测中,应严格按照标准操作规程进行操作,并采取措施降低误差和不确定度对检测结果的影响,以保证检测结果的准确性和可靠性.

关键词： 地下车库   荷载   基础   抗浮  

摘要： 为提高地下车库结构设计质量和安全性,本文分析了设计中的关键要点,包括柱网布置、荷载布置、基础设计及抗浮和后浇带设置等.通过综合考虑建筑与结构需求、合理选取基础形式和埋深、准确计算抗浮稳定安全系数等方法,提出了优化设计的建议.最终得出结论,设计师应持续关注新技术和规范,加强多专业协作,确保设计的科学性、经济性,以满足城市停车需求和安全标准.

ISBN: (数字)9781394294985 ISBN: (纸本)9781394294954

摘要： A practical guide to AI applications for Simple Python and Matlab scripts Machine Learning and AI with Simple Python and Matlab Scripts: Courseware for Non-computing Majors introduces basic concepts and principles of machine learning and artificial intelligence to help readers develop skills applicable to many popular topics in engineering and science. Step-by-step instructions for simple Python and Matlab scripts mimicking real-life applications will enter the readers into the magical world of AI, without requiring them to have advanced math and computational skills. The book is supported by instructor only lecture slides and sample exams with multiple-choice questions. Machine Learning and AI with Simple Python and Matlab Scripts includes information on: Artificial neural networks applied to real-world problems such as algorithmic trading of financial assets, Alzheimer’s disease prognosis Convolution neural networks for speech recognition and optical character recognition Recurrent neural networks for chatbots and natural language translators Typical AI tasks including flight control for autonomous drones, dietary menu planning, and route planning Advanced AI tasks including particle swarm optimization and differential and grammatical evolution as well as the current state of the art in AI tools Machine Learning and AI with Simple Python and Matlab Scripts is an accessible, thorough, and practical learning resource for undergraduate and graduate students in engineering and science programs along with professionals in related industries seeking to expand their skill sets.

关键词： 洁净实验室   通风与空调工程   施工要点   质量管理  

摘要： 洁净实验室暖通工程建设质量对后期高精度的科学研究及生产制造起到直接影响.为进一步明确洁净实验室通风及空调工程施工过程中的要点,本文以实际工程为研究对象,针对暖通工程施工过程中的关键部分进行讨论分析.结合洁净实验室通风及空调工程施工特点,分析施工要点及质量管理举措,本文研究内容对于洁净实验室暖通施工质量具有一定借鉴意义.

关键词： MATLAB  

摘要： We address the simultaneous globally optimal basic design of shell-and-tube heat exchangers interconnected in a HEN, where the total pressure drop of the streams that pass through several exchangers is limited to a maximum. We explore the optimal distribution of the available pressure drop in each stream among different heat exchangers, instead of the traditional procedure based on individual values of available pressure drop. The approach is useful in the context of HEN synthesis based on network structure enumeration when the design of the equipment is embedded in the algorithm. The objective is to obtain the optimal geometry of each exchanger, such that the total area or investment cost is minimized subject to the collective pressure drop constraints. The design variables for the shell-and-tube heat exchangers include all typical geometric dimensions. The novel global optimization approach builds an integer linear optimization model (ILOM), which is solved using an integer linear programming method (ILP). The ILOM involves only feasible heat exchanger candidates, obtained using Complete Set Trimming. The procedure was applied to two test cases involving 8 and 23 heat exchangers, respectively, each exchanger having 12,852,000 initial candidate geometries. The computational times for this task are below one hour for the two studied cases when implemented in MATLAB. Results for optimizing using the total annualized cost (CAPEX+OPEX) as an objective function and without pressure drop constraints are also presented for comparison. © 2025, The Authors. All rights reserved.

关键词： 吊点设计   吊装技术   施工方法   钢结构  

摘要： 为解决高层建筑钢结构施工中存在的质量不稳定、安全隐患增加及工程进度延误等问题,分析了高层建筑钢结构施工的技术特征及材质优势,探讨其在施工过程中可能遇到的技术难点,并重点围绕前期准备、测量放线、钢结构吊装及焊接技术等关键施工环节提出优化措施,旨在提高施工质量、降低安全风险、加快施工进度,以期为高层及超高层建筑钢结构的设计与施工提供有益参考.