The effects of population aging on industrial structure upgrading:Empirical analysis of provincial and threshold characteristics in China

Global population aging trends are intensifying,presenting multifaceted economic and social challenges for countries worldwide.As the world’s largest developing country,China has entered a phase of extreme demographic aging,posing significant questions about its impact on the ongoing upgrading of industrial structures.How does this demographic shift influence the upgrading of industrial structures,and does technological innovation mitigate or exacerbate this impact?The empirical results indicate that population aging impedes upgrading the industrial structure,while technological innovation positively affects the relationship between the two.Moreover,using technological innovation as a threshold variable,the impact of population aging on industrial structure upgrading evolves in a“gradient”manner from“impediment”to“insignificant”to“promotion”as the technological innovation levels increase.These findings offer practical guidance for tailoring industrial policies to different stages of technological advancement.

The Influence of the Urban-Rural Income Disparity on the Industrial Structure—Taking the Yangtze River Delta Region as an Example

In this paper, the effect of the mediation effect is mainly used to test and analyze the regression model, and most scholars have studied the impact of the modernization of the industrial structure on the income gap. However, this paper is from another perspective, based on the social background of high-quality development, the main study is the impact mechanism of urban and rural income gap on the industrial structure, taking the Yangtze River Delta as the main research object, and specifically selecting 22 central cities in the Yangtze River Delta region, which is also one of the highlights of this study. The regression model is constructed by using the intermediary effect, and the four intermediary variables of fiscal expenditure (M1), fixed asset investment (M2), number of patent applications (M3), and total import and export (M4) are selected, which represent the role of the government, fixed asset investment, scientific and technological level and opening-up level, and study and analyze the inherent influence mechanism between each variable. Before doing specific research, I consulted the papers and literature of many other outstanding scholars, among which Cheng Yuhong and Cheng Chi’s “The Influence Mechanism of industrial structure of urban and rural income gap” [1] has great reference value for this paper. According to the research results, under the background of high-quality development in the Yangtze River Delta region, the expansion of the income gap between urban and rural areas will inhibit the upgrading of the industrial structure, so it is necessary to focus on building a new type of urbanization, accelerating the construction of an urban innovation system, optimizing the rural employment structure to narrow the income gap between urban and rural areas, and providing impetus for the continuous upgrading of the industrial structure.

Explaining the lack of FDI in western China:an industrial perspective

It is difficult to attract FDI into western China.This situation might not be explained by traditional geographical factors,because the gap of inward FDI between the western and the eastern regions of China has increased.This paper attempts to explain the situation from an industrial perspective by exploring the industrial differences in the two regions and analyzing their effects in terms of industrial development level,industrial structure and industrial linking capability.The results reveal that industrial factors are important barriers to the inflow of FDI to western China.

High Spin Structure in ^(106)Pd

The high spin states of 106pd have been populated through the 100Mo（11B, lp4n）106Pd reaction using a beam energy of 60 MeV provided by the Beijing HI-13 tandem accel- erator at China Institute of Atomic Energy. By analyzing the V-3＇ coincidence relation and DCO raios of transitions, 3 rotational bands with 13 new states and 22 new 7 transitions belonging to 106pd were constructed. Bands 2 and 3 with negative parity were supposed to build on the vh1l/297/2 and vh11/2ds/2 configuration, respectively.

中国OFDI、空间溢出与“一带一路”沿线国家产业结构升级

为从空间关联视角厘清中国OFDI与"一带一路"沿线国家产业结构升级的关系,在理论分析的基础上,利用2006—2017年52个沿线国家的面板数据,构建空间杜宾模型实证检验中国OFDI对沿线国家产业结构升级的影响。研究表明:中国OFDI有利于沿线国家产业结构升级且存在显著的正向空间溢出效应。其中,技术转移型OFDI促进沿线国家产业结构升级的直接效应最大,资本转移型OFDI次之,劳动转移型OFDI最小;劳动转移型OFDI促进沿线国家产业结构升级的空间溢出效应最大,技术转移型OFDI次之,资本转移型OFDI最小,并且无论是中国整体还是不同转移类型OFDI的空间溢出效应均强于其直接效应。异质性分析表明,在不同区域沿线国家中,无论是直接效应还是空间溢出效应,中国OFDI促进东盟国家产业结构升级的效应最大,促进其他亚洲沿线国家产业结构升级的效应次之,促进欧洲沿线国家产业结构升级的效应最小。

中国OFDI对外贸高质量发展的影响路径研究

外贸高质量发展是现代化经济体系建设的重要内容。本文从外贸规模、外贸结构、外贸竞争力和外贸可持续性4个层面构建了外贸高质量发展的评价指标体系,并采用熵值法对OFDI促进外贸高质量发展的产业路径和技术路径展开理论和实证分析。研究表明:我国OFDI能显著促进外贸高质量发展;产业结构升级和技术进步的中介效应显著存在。为推动我国外贸实现高质量发展,政府应进一步完善相关政策措施,促进企业对外直接投资,不断深化产业转型、技术创新等保障机制改革;企业则应加大对自身技术的研发投入,加大对知识和技术密集型行业的对外投资,并加强企业之间的合作交流。

A Review of Current Research and Advances in Unmanned Surface Vehicles

Following developments in artificial intelligence and big data technology,the level of intelligence in intelligent vessels has been improved.Intelligent vessels are being developed into unmanned surface vehicles(USVs),which have widely interested scholars in the shipping industry due to their safety,high efficiency,and energy-saving qualities.Considering the current development of USVs,the types of USVs and applications domestically and internationally are being investigated.USVs emerged with technological developments and their characteristics show some differences from traditional vessels,which brings some problems and advantages for their application.Certain maritime regulations are not applicable to USVs and must be changed.The key technologies in the current development of USVs are being investigated.While the level of intelligence is improving,the protection of cargo cannot be neglected.An innovative approach to the internal structure of USVs is proposed,where the inner hull can automatically recover its original state in case of outer hull tilting.Finally,we summarize the development status of USVs,which are an inevitable direction of development in the marine field.

Nonlinear Analysis of Progressive Collapse of Reinforced Concrete(RC)Building by Different Kinds of Column Removal

Building collapse mostly can be caused by the loss of loading capacity in a primary structural component,resulting in the failure of surrounding elements,which in turn cause a failure propagation.Progressive collapses may be accidental,due to design deficiencies or errors,material failure or natural phenomenon(e.g.earthquakes)but it can be prevented by upgrade the concrete components’material[1,2].Well-engineered RC buildings generally have a good performance under normal loading conditions.However,faulty design,construction errors,material deterioration,and overloading are always occurred.When part of structure fails,the total load in the whole system will not disappear,which means the load will be redistributed unevenly to the adjacent part of structure.This phenomenon revealed that sustained high stresses in RC elements can lead to catastrophic collapse.Due to very few of papers did the research on the RC elements under high stress level sustained load,relevant experiments should be performed in this area.This paper gives the suggestions about how to apply the load in an experiment if researchers want to know the behavior of elements near to collapse especially focus on RC columns.

数字经济对体育产业高质量发展的影响——基于中介模型和门槛模型的检验

对我国19个省级行政区2012—2021年的面板数据进行实证分析,通过建立中介模型和门槛模型探究数字经济与我国体育产业高质量发展的关系。结果显示:①在固定效应模型的基础上进行实证分析发现,数字经济对体育产业高质量发展产生推动作用;②在数字经济促进体育产业高质量发展过程中,产业结构作为中介变量、科技创新作为调节变量在其中起到相应的促进作用;③数字经济与体育产业高质量发展之间显著存在产业结构一阶门槛和科技创新二阶门槛效应。提出:应从提升数字经济发展水平、优化产业结构以及提升科技创新水平等方面促进体育产业高质量发展,推进社会主义现代化体育强国建设。

Developing Tendency of Fashion Business in China

Nowadays Chinese fashion & accessory business has possessed some new features similar to the information industry , and has a developing tendency of information -media - like. High - sensitive - level fashion market is breeding, which results in the transformation of the fashion industrial structure. Designer brands work well in concert with this trend and two kinds of high - sensitive - level segments formed in Chinese fashion market.

数字新质生产力与实体经济高质量发展:理论分析与实证检验

扎实推进实体经济高质量发展是当前及未来一段时间内中国经济发展的重要命题。作为一种新型生产力,数字新质生产力对实体经济高质量发展的重要作用日渐凸显。文章在测度实体经济高质量发展水平的基础上,借助固定效应模型探究数字新质生产力与实体经济高质量发展之间的关系。结果表明,数字新质生产力能够有效促进实体经济高质量发展。机制检验结果表明,技术创新扩散与产业结构升级是数字新质生产力影响实体经济的重要渠道。异质性检验结果证实,数字新质生产力对实体经济高质量发展的赋能作用在东部地区更为显著。

原子级制造测量与表征研究现状综述

原子级制造是指将能量作用于原子,通过原子级材料的可控去除或者原子/分子级结构的大规模操控及组装,实现产品性能与功能跃迁的前沿制造技术,是一种可以大规模、批量化的先进制造技术。该过程需要在10-10m空间尺度下精确操控原子。同时,制造过程中原子的键合时间、电子动力学变化均发生在飞秒(10-15s)至阿秒(10-18s)量级。因此,只有具备超快时间和空间分辨在线检测与表征能力,才能够深入了解并利用原子级制造过程中原子尺度的新原理、新效应,保障原子级制造的可达性与可控性;只有实现原子级制造过程的高通量、大范围的在线监测,才能保障原子级制造的可靠性。基于此,原子级制造的测量与表征是指在原子级的时间、空间、能量尺度上对材料、结构或器件进行精确的测量和表征,以保障原子级制造的可达性、可控性与可靠性。本文介绍了原子级制造所需的测量表征手段的研究现状,从原子级超快动力学过程观测、原子结构演变原位表征、原子级制造过程在线质量监测三大方向进行系统梳理,总结了目前原子级制造测量与表征的挑战并针对未来发展给出建议。

人工智能、财政支出结构偏向与高质量就业

本文选取2009—2018年省级层面数据,运用面板固定效应模型分析人工智能应用对高质量就业的影响及其传导机制。研究结果表明,人工智能应用总体能够促进高质量就业。调节效应检验结果显示,财政支出能够正向调节人工智能应用对高质量就业的积极影响,并由于财政支出呈现结构偏向的特征,不同性质的财政支出会使人工智能应用程度对高质量就业的影响产生差异。作用机制结果显示,人工智能应用程度会通过产业结构升级间接促进高质量就业。异质性分析结果表明,在地区分布上,人工智能应用程度对高质量就业的积极影响主要体现在东部地区;在时期分布上,在自动化赋能阶段(2009—2014年),人工智能应用程度呈现出对高质量就业的促进作用,而在智能化创新阶段(2015—2018年)则不明显。本文的研究结论为挖掘人工智能应用在中国如何实现更高质量就业,以及探究财政政策导向在其中的作用提供参考。

数字经济赋能区域高质量发展的溢出效应研究

基于数字经济突破空间距离约束的集约优势,使用2012-2021年30个省(市、区)1的面板数据,通过区域协同的空间分层逻辑,实证探究数字经济赋能区域高质量发展的效应及其作用机制。实证结论表明:(1)数字经济对经济高质量发展呈现显著的直接效应和空间溢出效应。(2)数字经济促进经济高质量发展的根本动能源于数字经济驱动产业结构高度化、合理化、技术化“三位一体”共生互促。(3)数字经济对区域经济高质量发展的溢出效应在东部和西部表现明显,中部则不显著。为此,本文从区域协同促进区域共享发展视角提出相应对策,即:补齐数字经济区域发展短板,放大数字经济空间溢出效应优势,推进数字经济与产业发展深度融合。

绿色金融、产业结构升级与海洋经济高质量发展——基于环境规制调节的中介模型

绿色金融是促进“双碳”目标实现和提升海洋经济高质量发展水平的重要抓手。论文基于2009—2019年我国11个沿海省市的面板数据,运用中介模型考察了绿色金融对海洋经济高质量发展的影响及其传导路径。在此基础上构建有调节的中介效应模型,基于产业结构高级化和合理化的中介路径与环境规制的调节效应探究绿色金融对海洋经济高质量发展的路径机制。研究发现:首先,绿色金融显著促进海洋经济高质量发展,产业结构高级化和合理化均存在正向中介效应;其次,环境规制正向调节绿色金融发展对产业结构升级的积极影响,同时强化产业结构升级对海洋经济高质量发展的促进作用,且在绿色金融对海洋经济高质量发展的直接效应中起到显著正向调节作用。

数字经济对现代化产业体系建设的影响研究

现代化产业体系是现代化国家的物质基础,建设现代化产业体系对实现经济高质量发展、推动中国式现代化进程具有重要意义。利用2011—2021年我国30个省级行政区的面板数据,结合稳健性检验、内生性检验、中介效应检验和异质性检验等方法,实证分析数字经济对现代化产业体系的影响机制,为经济高质量发展奠定基础。研究发现:数字经济发展水平越高,现代化产业体系建设越完善;数字经济发展对现代化产业体系建设的推动作用在中西部地区和教育水平高的地区更为明显;绿色技术创新和产业结构升级在数字经济对现代化产业体系建设的影响中发挥中介作用。因此,应通过加强“两化”、推动绿色技术创新、优化产业结构等途径建设现代化产业体系,夯实中国式现代化的物质基础。

中国式现代化征程中体育产业高质量发展的基础、原则与方略——基于新结构经济学视角

中国式现代化新道路为体育产业发展提供方向指引,以体育产业高重量发展助推中国式现代化更是时代所需。运用文献资料法、逻辑分析法等研究方法,以新结构经济学为理论支撑,探究中国式现代化征程中体育产业高质量发展的基础、原则与实践方略。研究认为,基于新结构经济学的体育产业高质量发展是以要素禀赋厚植发展底色,以比较优势强化发展优势。在中国式现代化征程中体育产业高质量发展要立足于“有为政府”“有效市场”和现代产业等现实基础,其原则遵循是坚持以要素禀赋驱动升级,凸显体育产业现代特质;坚持以比较优势强关键点,转换体育产业发展优势;坚持以优先发展扬先手旗,攻克体育产业薄弱环节。并提出实践方略:把握时代需要,回应人民对美好生活的向往;构建现代体系,推动体育产业结构转型升级;秉承精准施策,引导区域与业态的协调联通;坚持创新引领,提升体育产业的自主话语权等。

虚拟集聚能够促进制造业绿色高质量发展吗?

虚拟集聚是新一代信息技术与实体经济深度融合的空间组织新形态,是实现制造业绿色高质量发展的新路径。文章基于2012—2022年我国30个省域面板数据,构建制造业绿色高质量发展和虚拟集聚指标体系,实证检验虚拟集聚对制造业绿色高质量发展的影响。研究发现:虚拟集聚能够有效促进制造业绿色高质量发展;虚拟集聚对制造业绿色高质量发展的影响存在区域、子维度和虚拟集聚水平异质性;虚拟集聚对制造业绿色高质量发展的影响存在负向空间溢出效应。研究结论为促进制造业高端化、智能化、绿色化发展提供了有益的政策启示。

New Concept of Digital Structuring Landscape Space of Mountain Territories Landscape Sphere

For the first time, a new concept of digital structuring of landscape space of mountainous territories is considered. It is proposed to carry out structuring and classification of landscape systems, with the distribution of high-altitude landscape complexes. When finding the boundaries of these complexes, the high-altitude selection criterion prevailed, as well as quantitative and qualitative changes in their internal content. According to these criteria, it is possible to distinguish between plain, low-slope, low-mountain, dissected-middle-mountain, massive-medium-mountain, altitude-landscape complexes. Structuring and classification are presented for further study of structures as objects of industry indications and possibilities of using high-growing complexes as development areas.

产业融合、产业结构升级与经济高质量发展的耦合协调机制研究

基于产业融合、产业结构升级与经济高质量发展的耦合协调机制,构建产业融合-产业结构升级-经济高质量发展的评价指标体系,采用熵权TOPSIS法对2006-2019年我国省际产业融合、产业结构升级和经济高质量发展水平进行评价,利用耦合协调度模型测度三个子系统的耦合协调水平,并结合面板Tobit模型探讨影响其耦合协调发展的主要因素。研究结果表明:三个子系统水平在研究期内呈稳定上升趋势且存在明显的区域差异性,但经济高质量发展水平相对滞后;我国产业融合-产业结构升级-经济高质量发展系统具有高度耦合和中低度协调的特点,协调层次与耦合度并未达到良性共振,且系统的耦合协调度存在显著的空间异质性;经济发展水平、政府能力、科技投入、产业结构、固定资产投资及人口集聚均是影响系统耦合协调度的重要因素,但区域层面的影响因素存在一定差异。因此,针对各地区实际情况提出差异化的政策建议,以协同好产业融合、产业结构升级和经济高质量发展的步伐。