Theory and application of equivalent transformation relationships between plane wave and spherical wave

Based on the governing equations and the equivalent models, we propose an equivalent transformation relationships between a plane wave in a one-dimensional medium and a spherical wave in globular geometry with radially inhomogeneous properties. These equivalent relationships can help us to obtain the analytical solutions of the elastodynamic issues in an inhomogeneous medium. The physical essence of the presented equivalent transformations is the equivalent relationships between the geometry and the material properties. It indicates that the spherical wave problem in globular geometry can be transformed into the plane wave problem in the bar with variable property fields, and its inverse transformation is valid as well. Four different examples of wave motion problems in the inhomogeneous media are solved based on the presented equivalent relationships. We obtain two basic analytical solution forms in Examples I and II, investigate the reflection behavior of inhomogeneous half-space in Example III, and exhibit a special inhomogeneity in Example IV, which can keep the traveling spherical wave in constant amplitude. This study implies that our idea makes solving the associated problem easier.

Construction of building energy conservation incentive policies under government regulation: Based on the subjects' behavior analysis

Building energy efficiency is a long-term strategy to achieve sustainable development, but the inconsistencies of main interests during the implementation lead to the need for government regulation in building energy conservation. Implementation of building energy efficiency of government regulation covers three aspects of construction and involves relevant participators, so the paper analyzes interests and roles of the related subjects in building energy saving, explore the motivations and its conversion mechanism of each player, and dissect the game relationship of associated earnings of developers' and consumers' behaviors selection under government control. Finally, the paper proposes basic requirements of building incentive policies for related subjects under government control to regulate the main behaviors of subjects in building energy efficient buildings and achieve energy efficiency goals and balance of all parties' benefits.

The Nexus between Nigerian Government Spending and Domestic Output in the Presence of Long-Term Crude Oil Price Shock: A Conditional Unrestricted Equilibrium Correction Model Approach

This paper is an empirical analysis of provisional unrestricted level relationship between Nigerian domestic output measured by Gross Domestic Product (GDP) and government spending proxied by capital and recurrent expenditures in the presence of static regressors such as crude oil prices and federal government retained revenues. We estimate an ARDL (1,0,1) using a single-equation approach. Results show that government expenditures have negative but statistically insignificant effects on domestic output in the long-run. Similarly, negative short run effects are established amongst the variables. However, recurrent expenditure is statistically significant in the short-run. Whilst federal government retained revenue has a positive and significant effect, crude oil price exhibited negative relationships with domestic output both at level and in the short-run dynamics. Also a high speed of adjustment implies that Nigerian Gross Domestic Product is extremely sensitive to shocks on the government spending in the long-run. An upward trend forecast between 2014 and 2020 is an indication of the continued positive impact and the government retained revenue will exert on the domestic output in the long-run.

The Centenary of the CPC:Exploration and Improvement of Central-Local Economic Relationship

Decentralization is a global phenomenon,but growth is not.The economic relationship between central and local governments is an important yet unresolved question in China’s economic development.As a large country with unbalanced political and economic development,China is faced with unbalanced and inadequate development as the primary constraint to meeting people’s ever-growing needs for a better life.The Communist Party of China(CPC)has been exploring to mobilize the initiatives of both central and local governments.During the planned economy era,China experienced a few rounds of centralization of economic powers but failed to strike a balance in maximizing the initiatives of both central and local governments.After the reform and opening up policy enacted in 1978,China’s central and local governments have succeeded in combining economic decentralization with administrative decentralization.China’s central government,local governments and enterprises have become resource allocation entities.China’s economic growth miracle has been driven by promoting the initiatives of central and local governments.Entering the new era,the central-local economic relationship represents an institutional strength of concentrating resources to accomplish great undertakings and leveraging the initiatives of both central and local governments.With the principal contradiction facing China’s development shifted into one between people’s growing needs for a better life and unbalanced and inadequate development,the management of central and local government relationship has taken on greater theoretical significance and salient implications in the new era.

Innovation of governance model of local government in China:Reflections on the issue of River Chief System in Guangdong-Hong Kong-Macao Greater Bay Area

Government-leading,multi-agent participation and coordinated co-governance are the original intentions of River Chief System governance policy design,the purpose is to really improve governance benefits of the River Chief System.Regrettably,the current research is still in its infancy,mainly based on theoretical analysis and case analysis.Whether government-leading,multi-agent participation and coordinated co-govemance can really improve the effectiveness of governance still lacks empirical testing.For this reason,based on the 241 questionnaires of the governance benefits of the River Chief System in Guangdong Province,this paper deeply analyzed the influence of the organizational level of the River Chief System on the governance benefits,and further studied the regulatory role of multi-agent participation.The results showed that there was an inverted“U”relationship between the organizational level of the River Chief System and the governance benefit,and multi-agent participation had no positive influence on the relationship between the organization level and the governance benefit.This paper has important enlightening significance for expanding the theory of River Chief System research and guiding the practice of government-leading governance policy of River Chief System.On the other hand,this paper can provide reasonable suggestions on environmental governance for Guangdong-Hong Kong-Macao Greater Bay Area’s high-quality development.

The Transformation of Rural Household Reproduction Model and Its Impact on Family Relations

Under the pressure of marketization and urbanization,rural family reproduction mode has transformed from simple reproduction to expanded family reproduction,thus changing the family structure and family relationship.Under the mode of expanded family reproduction,family relationship is a highly rational and deeply mobilized interaction pattern.And the family element configuration profoundly reflects the practical form of family relationship.Under the mode of expanded family reproduction,the changes in rural family relations are mainly reflected in three aspects:the decline of the paternal authority and the increasing family status of the offspring;the increasing status of women along with a decisive role in family decision-making;the more independent,equal,competitive and rational relationship among brothers.These changes bring forward new requirements on rural governance system,which requires improvements on social security and public culture.

Korea＇s Future Policy Recommendation for the Promotion of Eco-Friendly Vehicles in Metropolitan Area

This paper introduces and analyzes Korea＇s NGV （natural gas vehicles） policy for soot-free bus fleet which intends to promote CNG （compressed natural gas） bus in metropolitan area for the reduction of air pollution from road sector. At the early stage, Korean goverrmaent established various supporting policy systems to encourage public transportation companies to purchase CNG buses as a means to replace diesel buses. It was evaluated as very successful with making net economic benefit of CNG bus promotion policy. During the 2nd stage, Korean government implemented CNG hybrid bus promotion policy to further reduce both air pollution and greenhouse gas. Now, a new social demand for the vehicles is zero-emission vehicles. The author asserts that current FCEV （fuel cell electric vehicle） should be considered as an alternative to zero-emission vehicles in Korea and suggests policy recommendation for the promotion of FCEV by referring the current CNG bus promotion policy in public transportation sector.

高校图书馆用户关系管理指南针报告

教育部高等学校图书情报工作指导委员会和北京大学图书馆合作研制《高校图书馆用户关系管理指南针报告》,构建了高校图书馆用户关系管理理论框架,并采用问卷调查法对全国中大规模高校图书馆的用户关系管理情况开展调研,从用户受益、用户信任、用户参与等细分维度及整体进展方面对高校图书馆用户关系管理工作现状进行系统分析,总结出高校图书馆用户关系管理在顶层规划部署、服务拓展细化、信任培育加固、用户参与深化等方面的发展趋势,为高校图书馆用户关系建设与发展提供方向指引。

中国式乡村治理现代化的重要关系问题

为实现中国式现代化的战略目标,乡村治理现代化是必要的动力和重要的支撑。变革和创新乡村治理以促进农业农村农民的现代化发展,必须结合中国国情和实际需要,科学合理地应对和协调城镇化与乡村振兴、公共管理与村民自治、保护与发展、耕地保护与制度创新、农业与非农化、先富与共同富裕之间的关系问题。重视并处理好这六大重要关系问题,一方面可规避单向度发展,另一方面可避免政策与实践的二元对立,从而有效推进中国式乡村治理现代化。

亲清政商关系与企业数字化转型

在数字经济时代,数字化转型是企业实现高质量发展的内生要求,而企业的数字化转型离不开政府的引导和支持。基于此,分析检验当前亲清政商关系构建会如何影响微观企业的数字化转型,有助于企业实现高质量发展。利用2016—2020年中国A股传统行业上市公司的年度观察数据研究发现,亲清政商关系对企业数字化转型具有显著的正向影响,即在政商关系越亲清的地区,企业的数字化水平越高,并且这种正向影响在非国有企业中表现得更强。进一步的机制检验表明,亲清政商关系主要通过“市场导向效应”和“资源供给效应”对企业数字化转型发挥积极的促进作用。更具有启发意义的是,主要是政商关系的“亲近化”而不是政商关系的“清白化”助力了企业的数字化转型,而且亲清政商关系能够降低传统政治关联的相关影响。

供应商企业社会责任信息披露与客户稳定性

稳定的供应链关系对于经济安全平稳运行以及高质量发展意义重大,本文基于供应链关系视角考察了供应商的企业社会责任信息披露对客户稳定性的影响及其作用机理。实证结果发现:供应商企业社会责任信息披露质量与客户稳定性显著正相关,并且该影响在自愿性披露和民营企业样本中更加明显。机制检验表明,供应商企业社会责任信息披露主要通过提升信息透明度及改善公司治理来增强客户稳定性。本文将企业社会责任信息披露的经济后果拓展至供应链关系上,研究结论对供应商企业如何维护客户稳定性促进企业高质量发展具有一定启示意义。

治理环境再造:理解技术化背景下基层政府治理困境的一个视角

近年来在政府治理过程中技术应用不断深入,其实践效果通常是以一体多面、整体局部差异明显的形式呈现出来的。技术治理的内在变化与政府治理逻辑的根本性变革均引人关注。从中观层面看,技术使政府治理向形式简化、责任共担、监管渗透等方向转变,并导致超越传统科层制的制度控制、条块权力调整的结构重塑、合法性转移的价值置换等结果。基层政府所处的治理环境由此发生了全面的颠覆与革新,正面临着灵活性受限、自主性下降、正当性模糊等困境。技术改革的积极推进应适当考虑基层政府的技术适配性,通过对一线治理主体赋能来加强和引导技术治理,从而实现持续性基层善治。

乡村振兴中国家与农民关系的社会化调适

乡村振兴战略实施中的政策实践,指向了社会学持续关注的国家与农民关系问题。公共资源下乡中国家与农民之间的互动不仅在器物和组织两个层面展开,还集中体现在价值层面。在乡村振兴的积极案例中,国家与农民关系的新形态表现为器物层面上国家资源与社会需求的有效对接,组织层面上社会动员能力的提升,价值层面上农民国家认同感的强化。国家输入的公共资源只有以高度社会化的方式与农民互动时,农民才可能按照特定的行动逻辑将“国家”内化于心,国家权力才算实现了社会合法性的确认和再生产。为了实现国家与农民关系的社会化调适,社会治理公共性的建设不应停留于权力运作的策略层面。国家应充分发掘、激活蕴藏于乡村社会中的本土资源,将自上而下输入的公共资源转化为推动乡村社会开展自主建设的内生要素。如此,公共资源的下乡才能在推动乡村振兴的过程中,促成国家濡化能力在基层的再造,实现现代国家在社会中的扎根和成长。

共同富裕视域下乡村治理共同体建设的理论逻辑与实现路径

实现农民农村共同富裕是实现全体人民共同富裕中最艰巨最繁重的任务,这意味着加强和创新乡村治理将承担更多实现共同富裕的目标任务。为此,需在共同富裕视域下建设乡村治理共同体,实现农民农村共同富裕与乡村治理有效的高度统一。就其联系而言,实现共同富裕是乡村治理共同体建设的基本前提与价值导向,乡村治理共同体建设则是共同富裕的实现方式与本质要求,由此表现出二者互为实现途径与目的的内在耦合关系。就其理论逻辑而言,马克思共同体思想和城乡关系理论内在统一的思想奠基是其理论本源,习近平共同富裕观与乡村治理思想内在统一的现实指引是其理论创新,中华优秀传统文化中的“大同”理想与乡村治理思想的当代升华是其理论底蕴。就其实现路径而言,需坚持和加强党建引领,强化统筹乡村治理共同体的“内涵”和“外延”;发展壮大农村集体经济,筑牢乡村治理共同体建设的物质基础;健全“三治融合”乡村治理体系,完善乡村治理共同体的治理机制;积极推动城乡融合,激活乡村治理共同体建设的内生动力。

海洋观视角下海洋城市发展的历史回顾与国际比较

海洋观是人类在生产生活中对海洋的总体认识,随着海洋科技与国际关系发展而持续演变,为厘清不同历史时期海洋城市的差异特征提供了重要的研究视角。基于文献综述与类型归纳相结合的方法,重点关注海洋观变迁下全球典型海洋城市发展的空间演变与发展趋势。研究发现,在殖民、后殖民、全球化海洋观演变过程中,海洋城市职能从早期的贸易型逐渐转变为产业型与服务型,其战略属性主要体现为在全球、区域与国家多维空间尺度下的连通性、撬动性与支撑性。应充分发挥海洋城市战略属性,面向世界级海洋城市群开展现代海洋城市建设。

社区治理主体关系内卷化问题及其对策研究

正式组织、自治组织及市场主体在社区治理过程中存在着关系内卷化的问题。这一问题主要来源于社区治理多主体性与治理目标意义共享性的矛盾、治理主体资源控制差异性与治理过程连续性互为掣肘、自治组织成员公利性身份与私立性需求的结构性张力。针对治理主体关系处理的实践困境,应当从治理理念、治理目标、治理手段、治理评价等方面采取对策,促进多主体关系的协调发展。

新时代我国竞技体育发展中政社关系改革的几点思考

为更好适应新时代社会主要矛盾变化,建构我国竞技体育发展新格局,采用文献资料法和访谈法对我国竞技体育发展中政社关系改革问题进行分析。认为,我国竞技体育发展中强政府、弱社会的发展惯性仍需进一步打破,社会自组织的发展能力有待提高,政府管理的角色和职能亟需转变。新时代我国竞技体育发展需重视政社关系改革,从强政府、弱社会转变为强政府、大社会发展格局,政府引导社会力量有序发展,并与社会力量合作构建多元治理机制。具体包括:深化“放管服”改革,竞技体育“举国体制”继续做减法;社会力量加强自身建设,在更多领域发挥更大作用;依据经济发展的阶段性特征,有针对性地扶持社会力量成长;根据参与类别,对社会力量发展提供差异化的帮扶;做好市场监管,引导、规范社会力量成长;积极推进政府元治理、行业自治和多元共治。

高铁内外部效益平衡理论

本文构建高铁内外部效益平衡理论,阐释高铁内外部效益平衡的必然性、必要性及其实现路径。研究认为:高铁内外部效益平衡是高铁可持续发展的重要内涵,应重视密度经济的关键指针作用;高铁内外部效益的不平衡与高铁经济行为主体目标的多元性和不相容相关;高铁内外部效益平衡可通过高铁运输需求增加、铁路产业打破经济垄断和行政垄断引入竞争、构建有责政府广义补贴机制进行动态调整。高铁内外部效益平衡理论对于降低基础设施投资风险,支持经济高质量发展意义明显。