Identifying influencing factors and characterizing key issues in urban sustainable development capacity through machine learning

In response to the United Nations Sustainable Development Goals and China’s“Dual Carbon”Goals(DCGs means the goals of“Carbon Peak and carbon neutrality”),this paper from the perspective of the construction of China’s Innovation Demonstration Zones for Sustainable Development Agenda(IDZSDAs),combines carbon emission-related metrics to construct a comprehensive assessment system for Urban Sustainable Development Capacity(USDC).After obtaining USDC assessment results through the assessment system,an approach combining Least Absolute Shrinkage and Selection Operator(LASSO)regression and Random Forest(RF)based on machine learning is proposed for identifying influencing factors and characterizing key issues.Combining Coupling Coordination Degree(CCD)analysis,the study further summarizes the systemic patterns and future directions of urban sustainable development.A case study on the IDZSDAs from 2015 to 2022 reveals that:(1)the combined identification method based on machine learning and CCD models effectively quantifies influencing factors and key issues in the urban sustainable development process;(2)the correspondence between influencing factors and key subsystems identified by the LASSO-RF combination model is generally consistent with the development situations in various cities;and(3)the machine learning-based combined recognition method is scalable and dynamic.It enables decision-makers to accurately identify influencing factors and characterize key issues based on actual urban development needs.

Specialization and Coordination: New Paradigm, Theory, and Path for Regional Development

In its new development stage,China seeks to derive new dynamism from reform and opening up at a higher level to boost consumption and services.This process coincides with a further differentiation of comparative advantages across regions.Economic activity and population will continue to concentrate in clusters in coastal and central cities amid a continuous outflow of population from remote areas.Development expansion from coastal to interior regions and from central cities to the periphery will promote a new regional development paradigm of“dual centers and periphery”.Therefore,China’s regional development strategy should follow the new theory of seeking relative equilibrium amid development,identify regions of population inflow and outflow,and explore a new development path of regional specialization and coordination.By deepening market reforms and increasing central government coordination,the country is poised to improve the spatial allocation of resources and unleash institutional dividends in the process of developing a unified national market.

DEVELOPMENT THROUGH OPENING——Mr.Jiang Xingzhen on Shaanxi's Dual Opening Strategy

At the east-west economic and tradeexchange and cooperation conferencesponsored by the China Council forthe Promotion of International Trade, Shaanxi’sVice-Governor Jiang Xingzhen spoke aboutShaanxi’s investment environment and itsdual opening strategy. Firstly Mr. Jiang made a briefintroduction on Shaanxi. Shaanxi, located atthe junction of the middle and western areasof China, is one of the origins of China’ssplendid ancient civilization. Its rich mineralresources include 92 varieties of provenreserves, 28 of which, including molybdenum,rhenium, mercury, coal and natural gas havereserves ranking in the first three and 58ranking in the top ten in the country.

Dual Highway to Development

ALTHOUGH the private and public sectors can be considered polar opposites of each other, it has become clear in the last few years, es- pecially in the case of Africa, that both sectors are not only essential but must cooperate in order to achieve long-lasting and result ori- ented objectives.

Development Path of Urban-rural Integration

The urban and rural areas are regarded as two major components of the regional economic system. Only through joint balanced development of the two can we achieve overall economic optimization and social welfare maximization. But the great social division of labor has separated urban areas from rural areas,which casts the shadow of city-oriented theory on cooperative relations between urban and rural areas. Mutual separation between urban and rural settlements and independent development trigger off a range of social problems. We must undertake guidance through rational development path of urban-rural integration,to eliminate the phenomenon of urban-rural dual structure,and promote the sustainable development of population,resources and environment in urban and rural areas as soon as possible.

China’s Economic Growth and High-Quality Development:2020-2035

The time period between 2020 and 2035 is vital for China to achieve its second centennial goal.During this period,China must avoid the middle-income trap and achieve socialist modernization.To accomplish this goal,China must maintain a certain pace of economic growth and strive to double its real GDP per capita by 2035.However,by the current growth trajectory,China’s average economic growth rate is expected to stay at approximately 3.8%over the period between 2020-2035.This makes the GDP per capita growth target hard to achieve.Even when in a high-quality development stage,China should speed up economic growth while enhancing growth quality.Speed and quality are interdependent rather than contradictory with each other.To ramp up economic growth potentials,China must proceed with market-oriented reforms and shift economic growth drivers.To improve economic growth quality,household consumption should be increased to unleash China’s full potential,not only as the factory floor of the world but also one of world’s biggest markets,i.e.“dual circulations.”With appropriate policy response,China’s economy will be poised to achieve the goal of doubling real GDP per capita by 2035,marking a large stride in its economic aggregate and urban and rural household per capita incomes.

Digital Transformation:Reshaping China’s Development Landscape

The Chinese economy is currently undergoing a digital transformation.New growth drivers are replacing old ones,creating a new development landscape.Countries with strong digital industries will be the first to reap the benefits of digitalization.For China,the transformation to a digital economy is both of inevitability and heterogeneity fueled by dual circulations.Crowded out from more skill-based digitalized sectors,less-skilled labor moves to less digitalized sectors.New capital,industries and technology clusters emerge as new drivers of manufacturing and service sector development.With its large domestic market and industrial competitiveness,China has fostered a new development landscape of“dual circulations”.

The process development and product application of Tisco DSS

DSS have high strength,high corrosion resistance and good welding properties.Comparing with the same corrosion resistance level austenitic stainless steel,DSS decrease largely Ni content and realize the thinning of thickness design to perfectly optimize properties and decrease costs.Now DSS have been widely used in many fields such as petroleum,chemical industry,paper production,shipbuilding,nuclear power, seawater desalting,vacuum salt production and architecture.Tisco have began the process development and product application research of DSS products from last century and gradually solved a lot of technical problems such as AOD nitrogen alloying control of various content DSS,high temperature deformation mechanism of thermal process,large deformation hot rolling process of coils,the effect of bad phase precipitated during hot treatment process on properties and high efficiency pickling of high Cr/Mo content DSS plates.The various alloy content DSS plates and wide cold rolling coils(3Re60,S32101,S32304, S31803,S32205,S32750 and SUS329J4L) were successfully developed and used in national important constructions,key industries and abroad projects.

SME： The Hungarian Experience Situation and Development in Hungary

This paper aims to present the development of the SME sector through the example of a country in East-Central Europe. This country was once a member of the so-called communist block until 1989, but had a market economy in 1989. Hungary joined the EU on May 1, 2004, and displaied numerous interesting features concerning small and medium sized enterprises ever since, complying with a variety of expectations. The research study investigated the East-Central European SME systems, and particularly the Hungarian SME practice. The main methods used in this paper are present European and Hungarian research findings of nternational relevance. Several data and figures from the European Union, the Central European area and of course from Hungary were used for the characterization of the SME systems. The main results of the research study is a set of characteristics of the SMEs＇ East-Central European pathway： （1） SMEs as a pillar of the nation in the world and in Hungary; （2） Hungary as the Paradise of small enterprises （numbers versus reality）; （3） Domestic small enterprises in an international （European） comparison; （4） How the crisis impacted the domestic SME sector; （5） Misconceptions and dead ends in small enterprises today： What should the state subsidise and how？

The Development of Community Tourism： A Relational View of Development Economics

By adopting the research method of documentary research, combining the related theory of development economics, and starting with the concept of community tourism, this paper brings forward the ＂Dual Structure＂ and the Kuznets Hypothesis of community tourism, and defines ＂the game theory＂ between the residents of community and tourists, as well as the increasing relationship between the per capita tourism income of community and the Geordie Modulus of community. Conclusively it puts forward the way of developing the tourism and community harmoniously, namely, taking the human as the dominant factor and being joined by the community.

Dual Instinct and Structural Theories: DSM-5-TR

The genetic based Dual Instinct Theory is determined by evolutionary history. Aggression is required for survival and sex for propagation of species. Aggressive and sexual drive derivatives with their corresponding defence mechanisms are combined with biologically based stages of infant/child development and the functional entity of Structural Theory. This model of human nature is the applied to the diagnostic categories of DSM-5-TR. Objectives: To follow the innate Dual Instinct Theory from life to death and through Artificial Intelligence;connect it with biological stages of development of the Structural Theory and illustrate its manifestations in DSM-5-TR classifications. Method: Review of selected published literature. Applying the principle of focus and cognition of informed clinical observation of innate drive derivatives in conjunction with The Structural Theory. Both theories are functional entities with no structures involved. Sigmund Freud’s biologically based stages of development;oral, anal, genital pubic, adult, and geriatric along with a variety of unconscious, automatic, and persistent defense mechanisms are selectively folded into diagnosis listed in the manual.

Experimental Study of Diesel-NG Dual Fuel Electronic System for F6L912Q Engine

In order to improve the diesel engine emission performance and convert the diesel engine to dual fuel engine, a dual fuel (diesel and compressed natural gas (CNG)) electronic system was developed, in which electromagnetic valves were used to control multi point natural gas injection. The system was designed for type F6L912Q diesel engine and the function of the system was testified on test cell. The test results showed that the system had great advantages in power ability and emission performance. The average CNG substitution at rated load was over 80%. The dual fuel system was practical. To adopt dual fuel system was a good way to improve the engine's emission performance.

新质生产力、双循环联动与共同富裕

文章以2012—2022年为考察区间,选取我国276个地级及以上城市面板数据,就新质生产力对共同富裕的影响效应与作用机制展开研究。基准回归结果发现,新质生产力可显著推动共同富裕;异质性分析显示,新质生产力对共同富裕的影响效应具有城市规模异质性和分时段异质性;中介效应检验表明,国内循环、国际循环以及双循环联动在新质生产力与共同富裕之间发挥中介效应;门槛效应结果证实,随着数字金融水平不断提升,新质生产力对共同富裕的影响效应持续扩大。研究结论有利于进一步发挥新质生产力“助推器”作用,为实现共同富裕目标提供有益借鉴。

双碳目标下绿色金融碳减排效应的实证研究

绿色金融是实现绿色低碳发展战略的重要手段,研究绿色金融碳减排效应及其作用机制对实现“双碳”目标具有重要现实意义。利用2008—2020年省际面板数据,实证检验了绿色金融碳减排效应、作用机制和异质性。研究结果表明:无论是总维度还是分维度,绿色金融均具有显著的碳减排效应,其中绿色投资的碳减排效应最大,绿色证券次之,绿色信贷最小;绿色技术创新对绿色金融碳减排效应具有中介作用,环境规制与金融市场化均增强了绿色金融碳减排效果;东部组、科技发达组和高耗能组相对中西部组、科技欠发达组和低耗能组绿色金融碳减排效应更为明显。因此,进一步加大绿色金融产品创新,实现绿色金融资源高效配置,制定差异化绿色金融政策尤为重要。

高质量发展背景下职业院校“双师型”教师队伍建设:进展、困境及突破路径

“双师型”教师队伍是职业教育高质量发展的关键。通过对“双师型”教师队伍建设现状梳理发现,政策愈发关注“双师型”教师队伍内涵提升,同时也存在教师培养不足、在职教师学历提升遇到瓶颈、高技能人才进入职业院校路径不畅等困境。为此,应建设开放型职业教育教师培养体系,吸引应用型高校加入职教教师培养体系,为在职教师学历提升及高技能人才进入职教教师队伍打开通道,通过产教融合为“双师型”教师队伍的可持续发展提供保障。

双循环新发展格局研究综述

进入“十四五”时期,构建双循环新发展格局是促使我国迈向高质量发展的必经之路,新发展格局及其构建问题成为理论界探讨的一个焦点。文本着眼新发展格局的理论内涵与实施方略,对阐释新发展格局构建问题的现有文献进行全面梳理和评述,并论述相关实证研究:基于国内循环和国际循环间的关系对双循环新发展格局的科学内涵进行阐释,利用政治经济学理论、大国经济发展理论、经济增长理论、国际贸易理论和“阶段—模式—动力”三维理论对双循环新发展格局展开逻辑说明,并探讨新发展格局的历史逻辑;在实施方略方面,从国际环境、我国国内条件和需要应对的突出矛盾角度探讨双循环新发展格局的实践背景,从产业升级、收入分配、资源分配、现代物流能力改善、扩大内需、数字经济、经济社会基础等角度探讨双循环新发展格局的构建方略;在实证研究方面,论述全球产业链和区域融合发展对产业升级的影响以及双循环新发展格局能否对全要素生产率发挥促进作用。最后,文本对新发展格局构建问题的现有研究作出评价,对未来研究进行展望。

新时期推进高质量发展的若干路径

高质量发展是全面建设社会主义现代化国家的首要任务。新时期,我国高质量发展呈现新特征、新状态,客观上要求新的发展思路与之契合。新时期推进高质量发展,一是需要加快推动新质生产力发展,新质生产力作为先进生产力的演进方向,对新时期高质量发展具有强劲推动力;二是重点推进“双循环”发展,进一步强化国内大循环的主导作用,同时推动国内国际双循环相互促进;三是扎实推进“四化同步”发展,我国的“并联式”现代化发展路径不同于西方国家的“串联式”发展模式,在现代化建设上开辟了符合中国国情、具有中国特色的全新思路,而“并联式”发展模式也意味着发展的压力大、任务重,需要重点谋划;四是协调推进经济实现质的有效提升和量的合理增长,正确理解经济增长的质与量的关系,在强调质量发展的同时追求适度合理的增长速度;五是正确理解人与自然的关系,深刻把握“生命共同体”的科学内涵,实现人与自然和谐共生;六是统筹发展和安全,经济发展能够提升国家解决安全隐患和风险的能力,在新时期,应着重强调经济安全在国家安全体系中的重要地位。

“双碳”目标有利于促进经济高质量发展吗?

碳达峰与碳中和是我国当前环境治理的关键目标,实现碳减排也成为了我国经济高质量发展的重要内容,那么,“双碳”目标有利于促进经济高质量发展吗?基于“双碳”目标下的环境政策,采用长江经济带市级面板数据实证检验“双碳”目标对经济高质量发展的影响效应,结果发现:(1)“双碳”目标对长江经济带经济增长质量具有正向作用,表明“双碳”目标能有效促进经济增长质量提升,并且该结论通过了平行趋势、考虑内生性和其他政策冲击等多维度稳健性检验;(2)异质性分析结果表明,“双碳”目标对长江中下游地区、中小型城市、非省会和非工业型城市的经济增长质量提升效应更显著,并且该影响存在空间外溢效应;(3)进一步分析表明,环境治理、效率提升、技术创新和产业升级等因素是“双碳”目标影响经济高质量发展的重要传导机制。相关研究成果为“双碳”目标下我国经济高质量发展提供了经验证据,也为环境政策的进一步实施提供了相关政策建议。

“双碳”目标下的中国可再生能源发展:机遇与挑战

在回顾国内外有关可再生能源碳排放效应及其对碳中和作用研究进展的基础上,分析了可再生能源发展面临的机遇和挑战,最后提出了发展路径和对策。研究认为,为保持可再生能源的健康持续发展,承担起实现“碳中和”的历史使命,应当加强顶层设计,在发展规模、发展时序、空间布局和政策协调方面精心谋划;智慧电网、多元化储能、产业融合等协同发展,多种措施并举系统性解决可再生能源发电消纳问题;统筹协调可再生能源设施的用地、用海指标与布局,消除与基本农田保护和生态红线管控方面的矛盾;重视新能源发展中的气候与生态环境效应,通过科技进步、合理规划与管理实现可再生能源发展与生态保护的“双赢”。