Particle Swarm-Based Translation Control for Immersed Tunnel Element in the Hong Kong–Zhuhai–Macao Bridge Project

Immersed tunnel is an important part of the Hong Kong–Zhuhai–Macao Bridge(HZMB) project. In immersed tunnel floating, translation which includes straight and transverse movements is the main working mode. To decide the magnitude and direction of the towing force for each tug, a particle swarm-based translation control method is presented for non-power immersed tunnel element. A sort of linear weighted logarithmic function is exploited to avoid weak subgoals. In simulation, the particle swarm-based control method is evaluated and compared with traditional empirical method in the case of the HZMB project. Simulation results show that the presented method delivers performance improvement in terms of the enhanced surplus towing force.

Construction management and technical innovation of the main project of Hong Kong–Zhuhai–Macao Bridge

Design Units： CCCC Highway Consultants Co., Ltd.; China Zhongtie Major Bridge Reconnaissance ＆ Design Institute Co., Ltd. Construction Units： China Communications Construction Company Limited Consortium; China Railway Shanhaiguan Bridge Group Co., Ltd.; Wuhan Heavy Engineering Co., Ltd.; CCCC First Harbor Engineering Company Ltd. Consortium; Guangdong Changda High- way Engineering Co., Ltd.; China ZhongTie Major Bridge Engineering Group Co., Ltd. Consortium; Chongqing Zhixiang Paving Technology Engineering Co., Ltd.; Hunan Construction Engineering Group; China Railway Electrification Bureau Group Co., Ltd. Consortium

The design philosophy and bridge＇s technical innovation of Hong Kong- Zhuhai-Macao Bridge

This article introduces the project overview, construction goal and design philosophy of Hong Kong- Zhuhai-Macao Bridge. Based on large scale, factory production, standardization and assemble line, the innova- tive concept is taken as the general principle for design with the emphasis on description of the new material, new technology, new construction method and new equipment used in the design. The application of innovative technology has provided a solid foundation and favorable guarantee for project quality and design service

Transport Accessibility and Spatial Connections of Cities in the Guangdong-Hong Kong-Macao Greater Bay Area

Based on geographic information system(GIS) spatial analysis technology, the spatial pattern of raster grid transport accessibility for the Guangdong-Hong Kong-Macao Greater Bay area was studied and the states of spatial connectedness were simulated using highway passenger transport, railway passenger transport, port passenger transport and aviation passenger transport data. The result shows that transport accessibility within the Guangdong-Hong Kong-Macao Greater Bay area costs ‘one hour’ and the spatial distribution of accessibility in the area presents clear ‘core-periphery’ spatial characteristics, with Guangzhou, Foshan, Shenzhen constituting the core. The transport accessibility of Guangdong-Hong Kong-Macao is high. Average accessibility of urban nodes as measured by travel time is 0.99 h, and the areas accessible within 1.42 h occupy 79.14% of the total area. Most of the areas with the lowest accessibility are found in the peripheral area, with the worst accessibility being 4.73 h. Compared with the west-side cities, the economically developed east-side cities of the Guangdong-Hong Kong-Macao Greater Bay area have higher connectivity with roads, railways, ports, and aviation transport. Guangzhou, Foshan, Zhuhai, Shenzhen, Hong Kong and Macao are closely linked. The higher the accessibility, the closer the intercity connectedness.

Toward a more open and collaborative climate change policy framework in Hong Kong and Macao within the Guangdong-Hong Kong-Macao Greater Bay Area

The special administrative regions of Hong Kong and Macao enjoy a high degree of autonomy from the national policy system in devising their local policies,including measures related to climate change.Hong Kong and Macao each have their own climate change policies,some aspects of which are more advanced than policies in China's Mainland.While their high degree of policy autonomy has advantages,this has also isolated them from China's larger environmental management and practices that continue to advance at scale.This paper reviews the climate change policies of the two special administrative regions and analyzes their strengths and innovations,particularly in adaptation.It also identifies areas where there could be closer engagement,collaboration,and capacity-building with the China's Mainland,which has the potential for greater positive impacts,especially on a regional basis.

More Travel Services are Franchised to Hong Kong and Macao Tourism in 2002

In order to provide more convenient conditions for citizens on the mainland of China to travel to the Hong Kong and Macao special administrative regions, the relevant department of the State Council, after consultations with the Hong Kong Special Administrative Region, has decided to grant franchise to 67 more

Development of International Education Industry in the Guangdong-Hong Kong-Macao Greater Bay Area

Building the Greater Bay Area city cluster is a crucial national development strategy for China.As a vital hub of the Belt and Road Initiative,the Greater Bay Area cannot cultivate into an“international first-class bay area and world-class city cluster”without technological innovation and rapid economic progress,and technological innovation and economic development cannot be attained without the training of high-end talents through international education.Thus,the development of an international education demonstration zone is essential in the formation and development of the Greater Bay Area and making it a highland for education and talent,as well as giving full play to the social function of education.As the core of the accumulation of educational resources in Guangdong,Hong Kong,and Macao,the current situation,future opportunities,and development path of international education development in the Greater Bay Area while building a world-class international education center have become the starting point of this study.

港珠澳协同背景下跨境电商物流国际竞争力提升路径研究——基于模糊层次分析法

跨境电子商务对比传统贸易方式有利于优化资源配置以及推动我国经济增长方式实现全面转变。港珠澳协同背景下,跨境电子商务在对外贸易中的比重连年保持攀升态势,是非常重要的对外贸易增长点,而跨境电商又是以物流作为支撑。由此,本文围绕港珠澳协同背景下跨境电商物流国际竞争力提升路径展开深入研究具有积极意义。

从场空间到流网络:粤港澳大湾区城市群空间结构特征及优化路径研究

检视粤港澳大湾区城市群空间结构演化趋势,对纵深推动大湾区高质量发展意义重大。本研究因应数字经济对区域要素流动结构的影响,提出粤港澳大湾区“流网络”分析框架,并以首位度和齐普夫法则测度传统空间结构特征,以上市企业的“总部—分支”机构分布测度流网络特征。结果表明:大湾区总体经历了先集聚再分散的发展过程;各城市人口分布梯度不合理,核心城市的人口扩张推动了城市群的定型。大湾区经济规模结构呈现帕累托分布模式,各城市经济规模变差较大。从城际联系来看,广州深圳之间具有高联通度,形成了联通走廊,2000年以来深圳的相对联通度高居首位,区域网络日渐完善。未来,应织密高效的综合交通网络,加速市场一体化进程、构建“双核三圈”网络型城市群体系、设立“广深接合片区”并加快打造“广深联动走廊”,开创大湾区高质量协同发展新格局。

粤港澳大湾区内地高校港籍大学生的国家认同现状及其塑造机制

粤港澳大湾区建设在塑造中国香港青年国家认同方面具有重要意义。以就读于大湾区内地高校的港籍大学生为研究对象,通过访谈和问卷调查发现,大湾区建设背景下内地港籍大学生具有政治认同度较好、文化认同度较高及国民身份认同度较强的国家认同现状。这缘于港籍大学生在大湾区内地求学时,多元主体围绕其发展需求,以政策吸纳、教育合作、人文交流和生活化传播等四种机制,推进该群体的政治社会化场景变迁,进而对其塑造一种正向的国家认同。据此,应在推进大湾区高质量发展的同时,加强制度改革与规则协调,优化国民教育的课程体系及考核方式,加大大湾区建设的普惠性宣传,借以发挥大湾区在塑造广大中国香港青年国家认同的政策效能。

城市群人口集聚对共同富裕的影响——基于粤港澳大湾区的分析

共同富裕是中国式现代化的重要特征和中国特色社会主义的本质要求,如何推进共同富裕目标的实现成为政府和学界亟待解决的难题。以粤港澳大湾区为样本探讨城市群人口集聚对城市群内部以及周边区域共同富裕的影响,在理论分析的基础上采用“全面FGLS”方法以及动态面板空间杜宾模型进行估计得到如下结论:粤港澳大湾区人口集聚无论是对于城市群内部共同富裕还是带动周边区域共同富裕均具有积极的促进作用,在短期内存在正向的空间溢出作用,但长期而言粤港澳大湾区人口不可能无限集聚,当发展到一定程度后拥挤效应将超过集聚效应对共同富裕产生负面影响。上述结论意味着当前粤港澳大湾区内部形成的多中心集聚的态势,空间协调发展程度较高,在推动城市群内部共同富裕的同时,短期内也带动了周边区域的发展,但长期持续的发展仍需人口在粤港澳全域更为均衡地分布,而非无限向粤港澳大湾区集聚。基于上述结论,提出应重视基础设施的互联互通、产业互联、城市互联等,促进粤港澳大湾区与粤东西两翼及山区人口等要素资源更为顺畅地流动,优化资源配置,促进粤港澳全域发展,实现真正意义上的先富带动后富,最终实现共同富裕。

大湾区如何先行先试国际高标准经贸规则

与WTO相关规则对比分析发现,CPTPP等国际高标准经贸规则在全球价值链分工、数字贸易、“边境(后)”规则等方面进行拓展和完善,从经济领域和规则领域两个层面对中国产生诸多影响。结合粤港澳大湾区的发展实际,粤港澳大湾区可在非关税壁垒领域(削减非关税壁垒,对标国际高标准)、服务贸易领域(促进服务贸易高水平自由化)、国有企业和指定垄断领域(营造企业公平竞争的制度环境)、数字贸易领域(审慎管理数据要素,统筹好开放与安全)、中小企业领域(推动中小企业转型升级,提升竞争力)先行先试部分国际高标准经贸规则,为中国改进经贸规则,提出国际经贸规则的“中国模板”提供智力支持。

粤港澳大湾区绿色创新效率时空演化与影响因素研究

基于Super-SBM模型对2011—2020年粤港澳大湾区11个城市绿色创新效率进行测算,并运用核密度估计模型、莫兰指数以及冷热点法分析粤港澳大湾区绿色创新效率的时空演化特征,在此基础上采用空间杜宾模型(SDM)探究粤港澳大湾区绿色创新效率的影响因素。研究表明:研究时间区间,粤港澳大湾区绿色创新效率总体处于较高水平,且呈波动上升趋势;粤港澳大湾区绿色创新效率具有显著的空间非均衡性,呈现“东南高、西北低”的空间分异格局,且该格局有加剧趋势,同时空间相关性于2020年由正转负;政府支持、教育水平以及经济水平对粤港澳大湾区绿色创新效率具有显著的促进作用,教育水平对邻近地区的绿色创新效率具有正向溢出效应,而政府支持对邻近地区效率值具有负向溢出效应。

数字经济产业区域协同发展机理及路径研究--基于江西与粤港澳、长三角、长江中游城市群协同发展视角

数字经济产业区域协同发展对推动区域经济效率变革、质量变革和动力变革具有积极推动作用。近年来,江西充分发挥毗邻粤港澳大湾区、长三角以及位居长江中游城市群的地理优势,积极推动数字经济产业区域协同发展,打造了赣深电子信息产业集聚区、承接长三角数字产业转移示范区、赣湘电子信息产业园等,为江西数字经济产业高质量发展奠定了扎实基础,但是在数字经济产业区域协同发展过程中仍然存在协同规划缺乏、协同层次偏低、协同结构失衡、产业数字化滞后、数字技术协同创新弱和数据要素共建共享不畅等问题。这需从强化规划引领、提高协同层次、优化协同结构、加快数字化转型、推动数字技术协同创新和促进数据互联互通共用等方面加以破解。

全球海洋中心城市的湾区实践——以粤港澳大湾区为例

粤港澳大湾区是加快实施海洋强国战略的重要支点,全球海洋中心城市建设则是进一步推动粤港澳大湾区建设的关键抓手。全球海洋中心城市作为当前海洋城市建设与评价最具影响力的目标对象,需要分别在全球与湾区视角下考察粤港澳大湾区的优势与挑战。本研究通过解读全球海洋中心城市的概念与内涵,剖析了典型全球海洋中心城市的显著特征,以及与国际一流湾区发展的关系。研究发现,粤港澳大湾区在全球海洋中心城市数量和航运物流方面具有优势,但是在海事技术、竞争力与吸引力等方面面临巨大的竞争挑战。粤港澳大湾区推进全球海洋中心城市建设,着重要加快提升国际航运能力、加强海洋科技创新、参与全球海洋治理、强化海洋战略规划等。

区域人才创新指数构建与评价——基于粤港澳大湾区的实证分析

创新人才是中华民族赢得国际竞争的核心要素。客观、科学地评价城市人才创新发展水平,对城市科技创新能力的提升具有重要意义。在确定人才创新指数的概念内涵基础上,科学合理的人才创新指数评价指标体系的构建从创新基础、创新投入和创新产出三个维度展开,对2011—2021年粤港澳大湾区人才创新发展水平进行综合分析评价。结果表明:其一,2011—2021年粤港澳大湾区人才创新指数逐年提升,发展态势良好;其二,粤港澳大湾区城市间的人才创新发展水平异质性显著,且中心效应较为明显。基于指数评价结果,人才战略的制定应当围绕人才规模、人才流动和人才产出方面进行,以进一步提升城市创新能力。

粤港澳全运会提升大湾区体育国际影响力研究

采用文献资料法、实地调研法和逻辑分析法等研究方法,探究粤港澳全运会提升大湾区体育国际影响力。研究认为:粤港澳大湾区体育国际影响力的阻滞因素包括国际赛事供给不足,体育市场开发有待提升;体制机制差异显著,体育资源要素流动受阻;体育媒体供给失衡,国际媒体合作交流受限。通过粤港澳全运会发挥各地体育资源禀赋,打造大湾区体育赛事品牌;创新体制机制深度融合,畅通大湾区体育要素流动和培育多元体育媒体供给,建构大湾区体育国际传播体系等策略提升大湾区体育国际影响力。