Advancements and Applications of Polyurethane Curing Technology in Railway Track Bed Construction in China

This paper examines the application of polyurethane curing technology in the construction of railway track beds,with a specific focus on its implementation in China’s rapidly developing railway infrastructure.The study begins by identifying the limitations of traditional ballasted track beds,especially under the demands of high-speed and heavyload railways.It then methodically analyzes the advantages of polyurethane-cured track beds,highlighting their improved mechanical properties,including enhanced stability and durability.The paper further explores the benefits of transitioning to prefabricated polyurethane track beds,emphasizing significant cost reductions,better construction quality,and enhanced maintainability.Through a detailed review of experimental data and practical applications,the paper demonstrates the efficacy of polyurethane track beds in various railway settings.A critical part of the research involves optimizing the structural parameters of polyurethane track beds to achieve the best balance of mechanical and damping properties.The conclusion of the paper underscores the potential of polyurethane curing technology as a transformative approach to railway track bed construction,offering a solution to the challenges posed by traditional methods and aligning with the evolving needs of modern railways.

Spatio-temporal Evolution Characteristics and Driving Mechanism of the New Infrastructure Construction Development Potential in China

With the advent of the era of big data and artificial intelligence, new infrastructure construction(NIC) has attracted the attention of many countries. The development of NIC provides an opportunity to bridge the digital divide and narrow the regional gap,providing continuous impetus to further promote economic development. Here, we considered 31 provincial-level administrative units in China(not including Hong Kong, Macao, and Taiwan of China due to data unavailable) and established comprehensive evaluation indicators for the development potential of NIC. Afterward, we used the entropy-weight TOPSIS model to determine the development potential of NIC and analyze its spatio-temporal evolution characteristics. Furthermore, the GeoDetector model was applied to explore the driving mechanism of the NIC development potential. The conclusions were as follows: (1) The Chinese NIC development potential is generally low. The eastern China was the region with the highest development potential year by year, while the development potential in the central China was found to be in an accelerating phase. (2) The evolution of the Chinese NIC development potential’s spatial pattern has been characterized by an inland extension and coastal agglomeration. Moreover, we identified a superior development zone, a rising development zone, an inferior development zone, and a declining development zone. (3) The scope of Chinese NIC development potential agglomeration areas has gradually expanded and its degree has gradually deepened. The range of high-value agglomeration in eastern area gradually expanded and its degree gradually deepened. (4) Investment in innovative talents appears as the core factor affecting the Chinese NIC development potential. Whether acting alone or synergistically with other factors, its promoting effect on Chinese NIC development potential is the strongest.

Study on the importance of the infrastructure construction in the process of urbanization

This paper analyses the composition, the overall importance of city infrastructure construction and promote the city in the process of meaning. Then analysis the importance of city traffic infrastructure construction, the vanity of the city infrastructure and social infrastructure in the process of city, and puts forward relying on infrastructure construction to promote the urbanization development strategy.

国内外农村基础设施建设研究进展——基于CiteSpace的文献计量可视化分析

为系统梳理国内外农村基础设施建设的研究进展与热点前沿,以2000—2022年中国知网(CNKI)与Web of Science核心合集数据库中收录的4609篇文献为数据样本,运用可视化分析软件CiteSpace和文献计量研究法,对国内外农村基础设建设的研究现状、关键词聚类与突现关键词进行分析。结果表明,国内外发文整体呈增长趋势,国外研究热度整体高于国内;国内研究更关注经济、财政等学科领域,国外研究涉及环境、科学、生态等学科领域;国内外学者之间的合作均较少,相较于国外研究机构,国内机构彼此之间项目交流与研究合作更少;国外研究关键词主要聚焦于绿色基础设施、农村卫生、农村电气化以及可持续生计等方面,国内研究关键词主要包括乡村振兴、农田水利、农村经济等;现阶段,国外研究主要集中在可再生能源与可持续发展,国内重点关注乡村振兴与农村电商等内容。最后,探讨了中国农村基础设施建设领域未来的研究展望,在后续研究中可以关注可持续性农村基础设施建设、绿色基础设施建设以及农村信息基础设施建设等领域。

SWOT Analysis and Countermeasures of Beijing Rural Infrastructure

On the strength of the status quo of Beijing rural infrastructure, I probe into the SWOT analysis of the strengths, weaknesses, opportunities and threats of rural infrastructure in Beijing municipal. Among them, the strengths of rural infrastructure in Beijing municipal are analyzed from two aspects, namely, the strong financial support and great importance attached to by the government; the weaknesses are analyzed in terms of the serious shortage of funds invested and disparate investment in rural infrastructure; the opportunities faced by the rural infrastructure construction are analyzed in terms of support form the macrocontrol of the state and the threats are analyzed from the aspects of land preservation and environmental protection. Thus in order to further promote the Beijing rural infrastructure construction and increase the investment in rural infrastructure construction, the following countermeasures are put forward. In the first place, the government should adjust the fiscal policies and increase the investment in rural infrastructure construction. In the second place, the laws should be perfected to provide constitutional guarantee for infrastructure construction. In the third place, healthy supervision system of rural infrastructure should be managed well and use well. In the fourth place, the government should attach importance to disparate demands and shift from the unified standard to classified standard. In the fifth place, the government should enforce the supervision on capital and operation so as to improve the service efficiency of capital.

How Infrastructure Construction Reduces Market Segregation in China:Achievements and Problems

Theoretically, infrastructure construction helps remove domestic market segregation and thus create a modern market system. Based on the theory of new economy geography, this paper investigates the relationship between infrastructure construction and market segregation using the Spatial Panel Dubin Model(SPDM) based on China's interprovincial panel data of 1993-2012. As shown by empirical result, the beggar-thyneighbor problem existed persistently within China, infrastructure construction helped remove market segregation and should be enhanced, infrastructure construction had heterogeneous spatial spillover effects across periods, and market segregation behaviors were heterogeneous across regions or localities. China should enhance infrastructure to narrow regional gaps and step up cooperation among investors across regions to reduce the adverse impact of geographical boundary, and create modern service-based local governments, allowing the market to play a decisive role in resource allocation.

A Review on Development of Natural Fibre Composites for Construction Applications

This paper is a review of the past researcher of feasibility of the usage of natural fibre composites in various civil engineering applications and also the advantages and limitations of natural fibres reinforced composites. As the world is gathering attention towards the renewable resources for environmental purposes, studies of natural fibre have been increasing further due to the application of natural fibre throughout various industries such as aerospace, automobiles and construction sectors. This paper is started with brief information regarding the natural fibre composite materials, the natural fibre composite for structural and infrastructure applications, its advantages and also its limitations. With their unique and wide range of variability, natural fibre composites could emerge as a new alternative engineering material that can substitute the use of synthetic fibre composites.

Rural Infrastructure Construction in New Socialist Countryside Construction

In the background of new socialist countryside construction,rural infrastructure construction is favorable to consolidating fundamental position of agriculture,expanding rural job opportunities,increasing farmers' income,and favorable to development of rural economy and the national economy. Rural infrastructure construction mainly includes construction of agricultural basic production conditions,construction of rural ecological environment,construction of agricultural service system,and construction of rural living facilities. Finally,we put forward approaches and methods for strengthening rural infrastructure construction: firstly,increase fund input to provide financial support for rural infrastructure construction; second ly,make scientific village planning to ensure sustainability of rural infrastructure construction; thirdly,arouse farmers' enthusiasm and initiative to promote stable development of rural infrastructure construction.

Research on Main Problems and Solutions of Construction Model of China's “Broadband Village”

Broadband network plays an increasingly important strategic role in the development of new rural economy,society and culture.Based on the analysis of the construction of rural agricultural informatization and existing problems in our country,this paper gives the path selection and measures of " broadband village" combined with regional characteristics to select the construction path of " broadband village",it needs to build the long term mechanism of " broadband village" investment and financing,determine the goal of the regional construction of " broadband village" and focus on promoting the development of rural informatization services.

Impact of the Objective Function on the Construction of Internal Grids of Wind Farms Using Genetic Algorithm

The macro complex of the construction industry is energy intensive. Solutions that enable the supply of this demand while meeting the principles of sustainability are needed. The construction of wind farms has been a strategy employed by many countries to produce clean energy. An increase in the construction of wind farms has also been witnessed in Brazil. This calls for different activities, such as the design and construction of infrastructure. This article focuses on the design of internal medium voltage distribution grids for wind farms. The purpose is to find a radial configuration that connects a set of wind generators to the substation, in an optimum way, minimizing operational and construction costs, reducing loss and therefore contributing to sustainability. In large farms, the project design consists of a large combinatorial optimization problem, given the large number of possible configurations to be deployed. Finding the best solution for the internal grid depends on the criterion adopted for the objectives pursued. This article analyzes the different criteria that can be adopted in the design of the wind farm’s internal grid using a methodology based on genetic algorithm (GA). Its aim is to identify their influence on the solution of the problem and help decision-making by finding the most adequate criterion for the objectives pursued. The results show that the design of the internal grid is sensitive to the criteria adopted for the objective function. In addition, the degree of sensitivity is analyzed, showing that, in some cases, the solutions are not economically attractive and do not contribute to the reduction of losses.

Foreign Investment Encouraged in China's Infrastructure Construction

AccordingtoDirectorSongMioftheBasicindustryDevelopmentCommission,foreign-fundedprojectsininfrastructureconstructionwillcontinuetobeeffective.Intermsofpowef,China'sdomesticmarkethasbeenseriouslydeficientinpowersupplyinthepastfewyears.Formoreinvestment...

The Problems Existing in Building of Rural Community in Jilin Province and Corresponding Countermeasures

This paper analyses some problems existing in building of rural community in Jilin Province as follows:the funds for community building are short;the residents show sluggish participation in community;the infrastructure community building is backward;the organizational building of community lags behind;the operating mechanism is in chaos.Finally,corresponding countermeasures and suggestions are put forward as follows:we should strengthen the funds guarantee of government for community building;we should reinforce the quality education for the rural residents;we should speed up the construction of rural infrastructure;we should improve organizational building of rural community.

我国基础设施建设投资规制中的ESG表现调查研究——基于文本分析方法

环境、社会和治理(ESG)能给基础设施建设投资规制带来新理念,但是我国现行政策和项目中的ESG表现情况尚不清楚,有必要开展调查研究。本研究以规制政策和项目报告为研究对象,采用文本分析方法,对我国基础设施建设投资规制中的ESG表现进行调查研究。研究发现:①规制政策和项目报告中均已有一定程度的有关ESG表现方面的内容,但三个维度之间存在丰富性和完备性等方面的差异;②环境影响规制政策最完备,社会影响规制涉及安全评估、职业健康预评价等议题,其他议题未在文本中提及,项目治理规制政策数量最多,展现了我国自主的投资项目治理体系;③项目报告中的环境影响责任目标和措施相对完善,社会影响责任目标和措施则因项目和所处情境而异,项目治理责任目标和措施更多体现合规性要求,缺乏项目管理人自主动机。本研究提供了基础设施建设投资规制中的ESG表现调查情况,为我国以公共投资为主导的基础设施领域引入国际流行投资理念提供了决策依据。

安徽省农村基础设施投资效率研究--基于超效率SBM和Malmquist指数模型

农村基础设施建设是实现乡村振兴战略目标的必要条件。为了探讨安徽省农村基础设施投资效率,促进资源合理配置,研究基于静态超效率SBM和动态Malmquist指数模型,对安徽省农村基础设施投资效率进行了定量探究。结果表明:农村基础设施投资总体水平为0.760,未达到DEA有效,但整体呈上升趋势;各地市综合技术效率水平不高,且差异显著;此外,农村基础设施投资全要素生产率年均增幅为4.5%,偏向于技术进步的单轨驱动模式;全要素生产率的梯度特征较为明显:皖南>皖中>皖北地区。基于评价结果,提出了优化基础设施投资结构、增强技术创新能力等优化建议。

Achievements and Outlook of China's Multidimensional Poverty Reduction

Since the founding of the People's Republic of China in 1949, the Chinese government has made great achievements in reducing poverty through human capital development(education, healthcare, gender equality, maternal and infant health, and prevention and treatment of iodine deficiency), infrastructure construction(transportation,electric power, ICT application and access to safe drinking water), improvement of living conditions(toilet hygiene, stove renovation and resettlement) and rural social security("five-guarantees" system, subsistence allowance, rural pension insurance, natural disaster relief and agricultural insurance). Since the 18th CPC National Congress in 2012, the Chinese government has made remarkable progress in eradicating poverty and enhancing village governance. However, serious challenges will still exist after China's poverty eradication in 2020 and may lead to re-impoverishment.

The relationship between rural infrastructure and agriculture-related funds under rural revitalization strategy

The rural revitalization strategy is one of the“seven strategies”clearly listed in the report of the 19th CPC National Congress.In order to better promote the effective implementation of rural revitalization policies,it is necessary to give full play to the cornerstone role of rural infrastructure in rural revitalization.This paper first analyzes the supervision mechanism of agriculture-related funds,and then selects the rural development data of local governments in 30 provinces,municipalities,and autonomous regions from 2013 to 2017 as samples to regress and analyze the coupling relationship between my country’s rural infrastructure construction and agriculture-related funds.The study found that my country’s rural infrastructure construction and agriculture-related funds are positively correlated,and the greater the proportion of local finance in agriculture-related funds,the stronger the impact of agriculture-related funds on rural infrastructure construction investment.Policy recommendations such as the proportion of local finances are proposed.

“双碳”背景下新型基础设施建设与企业ESG表现

本文以智慧城市建设作为准自然实验,利用多时点差分模型考察了新型基础设施建设对企业ESG表现的影响。研究表明,智慧城市建设对企业ESG表现提升具有显著的促进作用,且该作用通过促进企业创新与数字化转型实现;异质性分析表明,在国有企业,高新技术行业与非重污染企业,智慧城市建设对企业ESG表现提升的促进作用更明显。本文的研究为我国更好地利用新型基础设施建设,促进企业绿色发展,实现经济效益与绿色效益的提升提供了理论证据。

基于SWOT-QSPM模型的我国天然气产业竞争战略研究

近几年,我国天然气产业在国家有关政策的大力支持下发展迅速,但仍面临煤炭、石油及新能源的全方位挑战,为提高我国天然气产业竞争力,有必要制定相应的竞争战略。基于此,利用具有定性与定量分析相结合优势的QSPM矩阵,构建我国天然气产业的SWOT-QSPM模型,准确评价我国天然气产业的竞争态势。在我国天然气产业外部因素综合评价和内部因素综合评价方面,分别建立EFE矩阵和IFE矩阵,得出我国天然气产业一定程度上可以抓住外部机遇、抵制外部威胁,可以把握优势、抵御劣势的结论。通过SWOT战略四边形和QSPM矩阵分析得出我国天然气产业竞争战略,结果表明,我国天然气产业应采用成本领先战略。为保证成本领先战略的顺利贯彻落实,我国天然气产业需采取相应的对策,主要包括实施全过程成本控制;健全成本管理控制系统,实施全员控制;深化体制改革,降低体制成本;完善天然气管网等基础设施建设等。

北京市农村基础设施建设的SWOT分析及对策研究

在介绍北京市农村基础设施现状的基础上,利用SWOT分析法分析了北京市农村基础设施建设的优势、劣势以及所面临的外部机遇及威胁。其中,从经济实力支持、政府高度重视2个方面分析了北京市农村基础设施的优势;从农村基础设施的资金投入规模严重不足、农村基础设施投资区域不平衡2个方面分析了北京市农村基础设施建设的劣势;从国家宏观政策、经济支持2个方面分析了北京市农村基础设施建设的机遇;从耕地保护和环境保护2个方面分析了北京市基础设施建设所面临的威胁。为了进一步促进北京市农村基础设施建设,建设社会主义新农村,提出了以下对策建议:一是调整政府财政政策趋向,加大对农村基础设施建设的投资力度;二是完善法律体系,为基础设施建设提供制度性保障;三是建立健农村全基础设施监管体系,建好、管好、用好基础设施;四是重视不同地区需求差异,由同一标准向分类建设倾科;五是加强对资金和管理经营的监督,提高资金使用效率。