Digital Application Objectives and Benefit Analysis of BIM Technology in Large-Scale Comprehensive Development Projects

This paper discusses the digital application and benefit analysis of building information model(BIM)technology in the large-scale comprehensive development project of the Guangxi headquarters base.The project covers a total area of 92,100 square meters,with a total construction area of 379,700 square meters,including a variety of architectural forms.Through three-dimensional modeling and simulation analysis,BIM technology significantly enhances the design quality and efficiency,shortens the design cycle by about 20%,and promotes the collaboration and integration of project management,improving the management efficiency by about 25%.During the construction phase,the collision detection and four-dimensional visual management functions of BIM technology have improved construction efficiency by about 15%and saved the cost by about 10%.In addition,BIM technology has promoted green building and sustainable development,achieved the dual improvement of technical and economic indicators and social and economic benefits,set an example for enterprises in digital transformation,and opened up new market businesses.

Financial Calculation Problems and Countermeasure Analysis of Large-Scale Engineering Construction Projects

The financial aspects of large-scale engineering construction projects profoundly influence their success.Strengthening cost control and establishing a scientific financial evaluation system can enhance the project’s economic benefits,minimize unnecessary costs,and provide decision-makers with a robust financial foundation.Additionally,implementing an effective cash flow control mechanism and conducting a comprehensive assessment of potential project risks can ensure financial stability and mitigate the risk of fund shortages.Developing a practical and feasible fundraising plan,along with stringent fund management practices,can prevent fund wastage and optimize fund utilization efficiency.These measures not only facilitate smooth project progression and improve project management efficiency but also enhance the project’s economic and social outcomes.

Multi-level fuzzy comprehensive appraisal on social effects of projects

The application of multi-level fuzzy comprehensive appraisal on social effects of projects has been studied. The principles for setting up an index system have been analyzed and the index system has been set up according to projects of construction. Models for multi-level fuzzy comprehensive appraisal have been offered and relative calculation steps have been given according to project instances.

Comprehensive Evaluation on Social Benefit of East Street Reconstruction Project

Through analysis on existing problems and rationality of East Street reconstruction project,its social benefit had been analyzed sysmatically and comprehensively from the aspects of social environment,natural environment and traffic safety environment.Furthermore,evaluation indexes of East Street reconstruction project had been established and weighting of each index had been identified by analytic hierarchy process(AHP).Fuzzy Synthetic Evaluation Model had been founded through fuzzy synthetic evaluation method.Finally,scientific judgment was conducted on social benefit of East Street reconstruction project by applying established evaluation system.It demonstrated that East Street reconstruction project could bring great social benefit,so it should support this project.

Modular Extremely Large-Scale Array Communication:Near-Field Modelling and Performance Analysis

This paper investigates the wireless communication with a novel architecture of antenna arrays,termed modular extremely large-scale array(XLarray),where array elements of an extremely large number/size are regularly mounted on a shared platform with both horizontally and vertically interlaced modules.Each module consists of a moderate/flexible number of array elements with the inter-element distance typically in the order of the signal wavelength,while different modules are separated by the relatively large inter-module distance for convenience of practical deployment.By accurately modelling the signal amplitudes and phases,as well as projected apertures across all modular elements,we analyse the near-field signal-to-noise ratio(SNR)performance for modular XL-array communications.Based on the non-uniform spherical wave(NUSW)modelling,the closed-form SNR expression is derived in terms of key system parameters,such as the overall modular array size,distances of adjacent modules along all dimensions,and the user's three-dimensional(3D)location.In addition,with the number of modules in different dimensions increasing infinitely,the asymptotic SNR scaling laws are revealed.Furthermore,we show that our proposed near-field modelling and performance analysis include the results for existing array architectures/modelling as special cases,e.g.,the collocated XL-array architecture,the uniform plane wave(UPW)based far-field modelling,and the modular extremely large-scale uniform linear array(XL-ULA)of onedimension.Extensive simulation results are presented to validate our findings.

Comparison of life cycle assessment of large-scale biogas projects with different raw materials in China

The anaerobic digestion(AD)disposal of stover and cattle manure is of great significance to the development of low-carbon economy and green energy in China,but it will also have an impact on the environment,and the degree of influence is different for various raw materials.In this study,life cycle assessment(LCA)methods were applied to analyze and compare the impact of corn stovers biogas projects(CSBP)and dairy manure biogas projects(DMBP)on the environment during the whole operation stage.The results of inventory analysis were evaluated by ReCiPe2016 Hierarchy(H)mid-point(problem-oriented)and end-point(destruction-oriented)method,respectively.The results showed that the net energy efficiency of CSBP was higher(763.903 kW·h/FU)and the greenhouse gas(GHG)emission reduction of DMBP was more(5541.418 kg CO_(2)-eq/FU).The anaerobic digestion(AD)units have the greatest environmental impacts,and human carcinogenic toxicity is the largest environmental impact category(1.16-1.43 PE).The key to reducing environmental impact is reducing the input of chemical substances and the waste of electric energy.Both CSBP and DMBP have a favorable impact on ecosystem quality and resources,and CSBP is more beneficial to the environment(-10.297 Pt).Co-digestion is an important measure to reduce the environmental damage from biogas projects.These research results provide theoretical support for the selection of raw materials for large-scale biogas projects in China,provide technical basis for reducing the impact of actual operation on the environment,and promote the resource utilization of agricultural waste and carbon dioxide emission reduction and sequestration.

Design of High Precision Horizontal Control Network for Large-Scale Hydropower Project

A new solution of combination network of GPS and high precise distance measurements with EDM is proposed. Meanwhile, it’s inadvisable only using GPS network without distance measurements. Three schemes: terrestrial network, GPS network and combination network are discussed for horizontal control network design of Xiangjiaba Dam in view of precision, reliability, coordinate and outlay in detail.

The planning and comprehensive utilization of Three Gorges Project

As the most significant water project,the Three Gorges Project (TGP) was designed to take care of multiple objectives for water utilization such as flood control,power generation and navigation.The implementation of the project improved the flood safety level of Jingjiang reach to more than 100-year return period,which reduced greatly the flood risk at the mid-lower reaches of Changjiang River,produce huge quantity of energy for the central,east and south China,and improved significantly the navigation conditions of Chuanjiang River.Meanwhile,the operation of the TGP in dry season which compensate the downstream water resources,will as well deepen the navigation channel and thus improve the navigation conditions in the middle river reach.With the increasing demands raised from various aspects of the society,new requirements will be made for the TGP for the purpose of harnessing,development and protection of the Yangtze River Basin.Therefore,it will be a long-term task for the operation of TGP on how to optimize the water resources utilization and implement an effective operation.

Research on the agricultural comprehensive development project performance evaluation problems and countermeasures

The agricultural comprehensive development project performance evaluation refers to the evaluation and assessment of the expected target original and effectiveness after the completion of a project, discuss how to according to different projects to form a reasonable evaluation system for agricultural comprehensive development project, make a reasonable assessment, which can not only ensure the project quality, but also to achieve the project plans to further improve and perfect, make agricultural development operation became more efficient, so it has the practical significance. This paper describes the construction of the performance evaluation system of agricultural comprehensive development project problems, and puts forward some countermeasures for construction of agricultural comprehensive development project performance evaluation system.

The design and selection of indicators of agricultural comprehensive development project performance evaluation system

Integrated Agricultural Development Project is an important part of China＇ s fiscal expenditure. Make a reasonable assessment to Integrated projects for agricultural development, not only can to protect the quality of the project has been implemented, but also has important practical significance for enhancing China＇ s comprehensive agricultural production capacity. In this paper, combined with the present situation of China＇ s comprehensive agricultural development project performance evaluation, proposed the design process of comprehensive agricultural development project performance evaluation system, and analysis of the performance evaluation method selected.

A Study on the performance evaluation of the agricultural comprehensive development project

Agricultural comprehensive development project is an important component of our country＇s financial expenditure. Making a reasonable evaluation of comprehensive agricultural development projects is not only to guarantee high quality of project implementation, but also of practical significance to the enhancement of our country＇ s comprehensive agricultural production capacity. Being based on the present situation and characteristics of the project, this paper has raised the general thinking about the overall performance evaluation for the project and analyzed the dimension factors in the evaluation system.

Research on the Low-carbon-high-value Agriculture Technology in the Comprehensive Improvement of Intra-county Environment Pollution——Taking the Development of Cultivation and Breeding Industry in the Ecological Cyclic Agricultural Garden in Shaoshan Irri

The comprehensive improvement strategy of intra-county environment pollution in the city and countryside was searched.By the research method which combined the microscopic view,the macroscopic view with the dynamic perspective,the seriousness of rural water quality,soil and atmospheric pollution in Xiangxiang,Xiangtan and the surrounding areas in Shaoshan irrigated area was revealed.The control measure which was 'four-dimensional pollution in the city and countryside'—— low-carbon-high-value agriculture and the technology innovation was proposed.The low-carbon-high-value technology innovation industrialization demonstration in three parts which included the pre-production,mid-production and post-production deep-processing of cultivation and breeding industry in the ecological cyclic agricultural garden in Shaoshan irrigated area was the driving force.We tried to propel the low-carbon ecological cultivation and breeding industry which included the paddy rice,grass,tree,medicinal herbs and pig,cow,chick,duck,fish.We wanted to relieve the structural unbalance of previous cultivation and breeding industry,'cheap grain hurting the farmers' and the short-leg problem of social-economic-ecological benefit.The results showed that the low-carbon-high-value agricultural system was a poly-generation technology system which promoted the multi-level and grading utilization,saved the energy,reduced the consumption and cleaned the production based on the ecology.

Similarity comprehensive evaluation of humanoid robot arm motion

A suitable comprehensive evaluation method for similarity comprehensive evaluation of humanoid motion(mainly to robotic arm) is proposed.For different robotic arms, a static comprehensive evaluation model is established by projection pursuit evaluation based on indexes of humanoid robot arm motion in robotics and ergonomics field. Based on projection pursuit evaluation with timing information entropy and time degrees, a dynamic comprehensive evaluation method is proposed by linear weighting to each time's static model's indexes weight according to timing weighted vectors. Through comparing similarity comprehensive evaluation result based on static and dynamic comprehensive evaluation model, the results show that similarity based on dynamic comprehensive evaluation model is high. By comparing reliability, similarity and dispersion of static and dynamic comprehensive evaluation models, the results show that dynamic comprehensive evaluation result has better accuracy, stability and lower dispersion, and the result is more reasonable and real. Therefore, the dynamic comprehensive evaluation method proposed in this paper is more suitable for similarity comprehensive evaluation of humanoid robot arm motion.

Research of Personnel Operational Ability Evaluation of Large-scale Complex Equipment

The level of personnel operation ability determines the expected effectiveness of large-scale complex equipment. Firstly, this paper constructs the personnel operational ability evaluation index system and analyzes the data source of index. Secondly, the weight of index is determined and the fuzzy comprehensive evaluation model is proposed. Finally, results of instance analysis show that the evaluation model is feasible and effective.

Research and Design of Consistent Project Cases for the Software Engineering Course Group

In order to enhance the abilities of practical innovation and solving complex engineering problems of students in the engineering context,we design a course cluster teaching model based on a unified enterprise-level project case.The program divides the knowledge points required by the project into the corresponding courses,and divides their realization into the practical teaching cases,so as to realize the design of teaching practice cases embodied in the unified project framework.This model allows students to practice projects based on the unified project background while learning knowledge from different courses.It not only allows students to learn abstract,fragmented,and difficult-to-understand knowledge systems thoroughly,but also integrates the knowledge into the practice of the enterprise-level project development,helping students experience the value of knowledge in complex engineering projects and thus improving their ability to solve complex engineering problems while learning theoretical knowledge.

水利工程白蚁防治研究进展

白蚁是一种主要的害堤动物,一直是水利工程安全运行的重大隐患,经济社会的发展和复杂环境的变化对白蚁防治提出了更高的要求。梳理了水利工程白蚁防治中预防、探查、处置三个环节的研究进展,阐述了白蚁防治关键技术的基本原理、适用场景及应用效果;回顾了白蚁监测预警技术的发展过程,介绍了技术原理、系统架构和功能实现;总结了白蚁综合防治技术的实践及探索,探讨了现阶段白蚁防治技术的适用性和局限性。在此基础上提出了对白蚁习性规律、白蚁蚁巢精准探测、白蚁智能监控预警、堤坝动物危害风险评估、白蚁防治综合治理及体制机制建设等研究方向的思考,为促进白蚁防治更加精准高效、绿色智能提供借鉴。

北京市南水北调配套工程调蓄工程勘察关键技术

北京市南水北调配套工程调蓄工程是北京市“26213”供水格局的重要组成部分,工程分布于北京市西、北、南不同地区,场地建设环境条件复杂,地层结构分布及组合多样,水文地质条件复杂,工程建设面临诸多地质问题及难题。工程勘察成果全面、涉及面广、涵盖工程勘察综合类的全专业领域,完成专业全面的技术成果文件与研究报告60余册,发表学术论文50余篇,取得七大方面技术创新、30余个技术创新点。勘察总体工作思路、技术路线、研发的创新技术、利用的先进手段等方面具有实践推广价值,特别是对城市复杂地质环境条件下建设城市供水调蓄工程具有借鉴作用。

新时期超大型运河开发综合效益评价

近年来,平陆运河工程投入建设,湘桂、赣粤等运河工程前期研究有序推进,我国超大型运河工程开发引发高度关注。以超大型运河开发的综合效益为切入点,分析我国超大型运河总体规划情况,深刻剖析超大型运河工程的特点,综合考虑新发展阶段国家战略要求、经济发展特征和行业发展导向等多方面因素,基于多元化价值理论和公共项目经济评价方法,提出超大型运河开发综合效益应重点关注对国家战略实施的价值、降低社会物流成本的价值、水资源综合利用价值以及引领运河沿线综合开发、优化区域经济社会发展和国土空间格局的价值等4个方面,并以平陆运河工程为例进行实证分析,以期为推动构建新发展阶段超大型运河开发综合效益评价方法体系提供支撑。

陕北中低温煤焦油中酚类物质的含量测定——推荐一个应用型综合实训项目

介绍了一个应用型综合实训项目,本实训以陕北中低温煤焦油中酚类物质的含量测定为载体,涵盖了煤焦油样品制备、样品定性、定量分析全过程。既能让学生了解煤焦油中酚类物质的组成、分布及应用等当前化工行业关注的热点问题,又能让学生熟悉超声波技术、标准曲线法、气相色谱-质谱联用(GC-MS)分析技术的相关原理及操作,可作为分析检验技术专业学生的综合实训项目,对于培养学生综合素养和分析解决实际问题能力具有积极意义。

“无线组网与性能测试”综合教学实验设计

针对综合实验中知识点融会贯通不够,工程性不强等问题,设计了“无线组网与性能测试”综合实验。以应急通信、军事演习为背景,涵盖环境勘察、链路预算、组网设计、性能测试、技术优化等环节,设置多层任务,逐步提升学生解决复杂问题的综合能力,培养学生不断探索的科学精神。紧跟通信行业发展,提出以“学生为中心”,采用“组内协作、组间较量”机制,创新任务驱动的PBL教学,构建“多维度、全方位”的评价机制。有助于学生专业知识的综合运用和工程素养与科学思维的培养,最终形成学生自身的知识架构,实现实验教学的“铸魂性、创新性、高阶性、挑战度”。