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Learning-Based Joint Resource Slicing and Scheduling in Space-Terrestrial Integrated Vehicular Networks

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Journal of Communications and Information Networks 2021年第3期6卷 208-223页

作者： huaqing wu Jiayin Chen Conghao Zhou Junling Li Xuemin(Sherman)Shen Department of Electrical and Computer Engineering University of WaterlooWaterloo.ON N2L 3G1Canada Department of Electrical and Computer Engineering the University of British ColumbiaVancouverBC V6T 1Z4Canada Shenzhen Institute of Artificial Intelligence and Robotics for Society(AIRS) and the Department of Electrical and Computer EngineeringUniversity of WaterlooCanada

In this paper,we investigate the resource slicing and scheduling problem in the space-terrestrial integrated vehicular networks to support both delay-sensitive services(DSSs)and delay-tolerant services(DTSs).Resource slicing and scheduling are to allocate spectrum resources to different slices and determine user association and bandwidth allocation for individual *** accommodate the dynamic network conditions,we first formulate a joint resource slicing and scheduling(JRSS)problem to minimize the long-term system cost,including the DSS requirement violation cost,DTS delay cost,and slice reconfiguration *** resource slicing and scheduling decisions are interdependent with different timescales,we decompose the JRSS problem into a large-timescale resource slicing subproblem and a small-timescale resource scheduling *** propose a two-layered reinforcement learning(RL)-based JRSS scheme to find the solutions to the *** the resource slicing layer,spectrum resources are pre-allocated to different slices via a proximal policy optimization-based RL *** the resource scheduling layer,spectrum resources in each slice are scheduled to individual vehicles based on dynamic network conditions and service requirements via matching-based *** conduct extensive trace-driven experiments to demonstrate that the proposed scheme can effectively reduce the system cost while satisfying service quality requirements.

关键词： space-terrestrial integrated vehicular networks LEO satellite communication resource slicing and scheduling reinforcement learning matching-based optimization

Dynamic Spectrum Control-Assisted Secure and Efficient Transmission Scheme in Heterogeneous Cellular Networks

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Engineering 2022年第10期17卷 220-231页

作者： Chenxi Li Lei Guan huaqing wu Nan Cheng Zan Li Xuemin(Sherman)Shen State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710071China Department of Electrical and Computer Engineering University of WaterlooWaterlooON N2L 3G1Canada Collaborative Innovation Center of Information Sensing and Understanding Xi’an 710071China

Heterogeneous cellular networks(HCNs)are envisioned as a promising architecture to provide seamless wireless coverage and increase network ***,the densified multi-tier network architecture introduces excessive intra-and cross-tier interference and makes HCNs vulnerable to eavesdropping *** this article,a dynamic spectrum control(DSC)-assisted transmission scheme is proposed for HCNs to strengthen network security and increase the network ***,the proposed DSC-assisted transmission scheme leverages the idea of block cryptography to generate sequence families,which represent the transmission decisions,by performing iterative and orthogonal sequence *** on the sequence families,multiple users can dynamically occupy different frequency slots for data transmission *** addition,the collision probability of the data transmission is analyzed,which results in closed-form expressions of the reliable transmission probability and the secrecy ***,the upper and lower bounds of network capacity are further derived with given requirements on the reliable and secure transmission *** results demonstrate that the proposed DSC-assisted scheme can outperform the benchmark scheme in terms of security ***,the impacts of key factors in the proposed DSC-assisted scheme on the network capacity and security are evaluated and discussed.

关键词： Heterogeneous cellular networks Dynamic spectrum control Transmission security Efficient data transmission

6G service-oriented space-air-ground integrated network: A survey

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Chinese Journal of Aeronautics 2022年第9期35卷 1-18页

作者： Nan CHENG Jingchao HE Zhisheng YIN Conghao ZHOU huaqing wu Feng LYU Haibo ZHOU Xuemin SHEN School of Telecommunications Engineering Xidian UniversityXi’an 710071China School of Cyber Engineering Xidian UniversityXi’an 710071China Department of Electrical and Computer Engineering University of WaterlooWaterloo N2L 3G1Canada School of Computer Science and Engineering Central South UniversityChangsha 410083China School of Electronic Science and Engineering Nanjing UniversityNanjing 210023China

As an indispensable component of the emerging 6G networks,Space-Air-Ground Inte-grated Networks(SAGINs)are envisioned to provide ubiquitous network connectivity and services by integrating satellite networks,aerial networks,and terrestrial *** 6G SAGINs,a wide variety of network services with the features of diverse requirements,complex mobility,and multi-dimensional resources will pose great challenges to service provisioning,which urges the develop-ment of service-oriented *** this paper,we conduct a comprehensive review of 6G SAGINs from a new perspective of service-oriented ***,we present the requirements of service-oriented networks,and then propose a service-oriented SAGINs management *** categories of critical technologies are presented and discussed,i.e.,heterogeneous resource orchestration technologies and the cloud-edge synergy technologies,which facilitate the interoperability of different network segments and cooperatively orchestrate heterogeneous resources across different domains,according to the service features and *** addition,the potential future research directions are also presented and discussed.

关键词： Mobile Edge Computing(MEC) Network Function Virtual-ization(NFV) Network slicing Service-oriented network Software Defined Network-ing(SDN) Space-Air-Ground Inte-grated Networks(SAGINs)

Research performance evaluation of Chinese university:A non-homogeneous network DEA approach

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Journal of Management Science and Engineering 2021年第4期6卷 467-481页

作者： Tao Ding Jie Yang huaqing wu Yao Wen Changchun Tan Liang Liang School of Economics Hefei University of TechnologyHefei230009China School of Business Central South UniversityChangsha410083China School of Management Hefei University of TechnologyHefei230009China

Performance evaluation for universities or research institutions has become a hot topic in recent ***,the previous works rarely investigate the multiple departments’performance of a university,and especially,none of them consider the non-homogeneity among the universities’*** this paper,we develop data envelopment analysis(DEA)models to evaluate the performance of general non-homogeneous decision making units(DMUs)with two-stage network structures and then apply them to a university in ***,the first stage is faculty research process,and the second stage is student research *** first spit each DMU(***)into a combination of several mutually exclusive maximal input subgroups and output subgroups in terms of their homogeneity in both *** an additive DEA model is proposed to evaluate the performance of the overall efficiency of the non-homogeneous DMUs with two-stage network *** analyzing the empirical results,some implications are provided to support the university to promote the research performance of each department as well as the whole university.

关键词： Data envelopment analysis(DEA) Non-homogeneity Two-stage Research performance

Eco-efficiency Evaluation to Chinese Textile Mills

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Eco-efficiency Evaluation to Chinese Textile Mills

增值税分成、财政激励与城市经济发展不平衡——内在机制与经验证据

2011 International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： Weiling Dai Qiong Xia Feng Yang huaqing wu School of Management University of Science and Technology of China School of Liberal Arts and Economics Hefei University of Technology

ISBN: (纸本)9781612848334

Ecological efficiency evaluation is an important task of central or local governments for environment protection and sustainable development. Data Envelopment Analysis is a typical mathematical tool used in ecological efficiency evaluation, and a lot of DEA models are proposed. The current paper uses the ecological Shannon DEA procedure based upon the existing study to obtain an ecological comprehensive efficiency score for each of a group of Chinese textile mills. The results seem reasonable since they integrate the results of existing relevant DEA model.

关键词： data envelopment analysis (DEA) undesirable output eco-efficiency Shannon’s entropy

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数量经济技术经济研究 2023年第3期40卷 70-90页

作者：彭飞蔡靖吴华清合肥工业大学经济学院

优化财政分配格局对推进区域协调发展与实现共同富裕具有重要意义。为了探究地方政府财政激励差异如何影响城市经济发展不平衡变化,本文以2016年增值税分成比例调整作为地方财政激励的准自然实验,基于2010~2019年市县经济统计数据,运用... 详细信息

优化财政分配格局对推进区域协调发展与实现共同富裕具有重要意义。为了探究地方政府财政激励差异如何影响城市经济发展不平衡变化,本文以2016年增值税分成比例调整作为地方财政激励的准自然实验,基于2010~2019年市县经济统计数据,运用强度双重差分模型考察了财政激励对城市经济发展不平衡的影响。研究发现,财政激励能显著降低城市经济发展不平衡,且这一效应具有持续性特征。对于改革前经济发展不平衡较高和经济发展水平较低的城市,财政激励发挥着“雪中送炭”的作用。而在税收征管强度较高的城市,财政激励效应更加明显。机制证据表明,财政激励通过加强税收竞争和扩大政府投资两种渠道降低城市经济发展不平衡程度。进一步分析发现,财政激励推进了城市共同富裕发展进程,是城市经济发展不平衡改善的主要表现。本文不仅拓展了税收分成的经济效应研究,而且从财政激励角度廓清了城市经济协调发展的制度成因和内在机制。本文结论为新发展阶段推进省以下财政体制改革、构建区域协调发展新格局提供了经验参考和决策方向。

关键词：增值税分成财政激励经济发展不平衡税收竞争政府投资

开源还是节流?——我国商业银行效率、行为模式与所有制差异

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计量经济学报 2021年第2期1卷 318-345页

作者：何心巨吴华清合肥工业大学经济学院合肥230601

本文提出了Farrell-Type利润效率的数据包络估计方法,对我国29个省市的130家商业银行2014年至2016年的利润效率进行评估和效率分解.我们将银行的利润效率归因为收益增长(开源)和成本控制(节流)两类行为模式,并分析了所有制差异对行为模... 详细信息

本文提出了Farrell-Type利润效率的数据包络估计方法,对我国29个省市的130家商业银行2014年至2016年的利润效率进行评估和效率分解.我们将银行的利润效率归因为收益增长(开源)和成本控制(节流)两类行为模式,并分析了所有制差异对行为模式的影响.研究发现了商业银行之间不同的所有制会导致不同的行为模式和效率表现,其中国有商业银行的利润效率显著更低,而股份制商业银行的效率最高.进一步的效率分解和回归分析发现,国有商业银行的无效率来源主要是开源的动力不足,这与其公有制公益性以及在银行体系中扮演的稳定器角色密切相关.我们认为之前单纯以利润取向的银行业效率评价研究高估了国有银行的无效率性,并给出了未来改革建议.该研究为银行利润效率研究提供了新的研究范式,并对国有商业银行的改革方向提供实证依据.

关键词：利润效率效率分解商业银行所有制差异行为模式

私营企业缘何参与国有企业混合所有制改革?:来自出口市场的证据

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世界经济研究 2023年第2期 105-118,M0004页

作者：彭飞王玲吴华清合肥工业大学经济学院合肥工业大学管理学院

在新冠疫情持续和贸易保护主义抬头的双重背景下,全面深化国有企业混合所有制改革(简称“国企混改”)对稳定和发展出口市场具有重要战略意义。与既有研究普遍关注“国企混改”对国有企业的影响不同,文章为了廓清私营企业缘何参与“国企... 详细信息

在新冠疫情持续和贸易保护主义抬头的双重背景下,全面深化国有企业混合所有制改革(简称“国企混改”)对稳定和发展出口市场具有重要战略意义。与既有研究普遍关注“国企混改”对国有企业的影响不同,文章为了廓清私营企业缘何参与“国企混改”,基于2020年两万余家中国私营企业调查数据,首次考察了参与混合所有制改革(简称“混改参与”)对私营企业出口行为的影响。研究发现,“混改参与”显著扩大了企业出口规模,提升了企业出口倾向,对生产率较低、政治地位评价较低和非高新技术的企业,出口效应尤为显著。机制证据表明,“混改参与”使私营企业建立了与国有企业的政治关联,纾解了融资困境,增加了政府补贴,扩大了投资能力,进而促进了出口市场发展。文章结论不仅拓展了“国企混改”的经济效应,而且揭示了私营企业“混改参与”的经济动机。

关键词：国有企业混合所有制改革出口行为融资约束政府补贴投资

基于价值网理论的产业发展策略研究——以安徽汽车产业东接发展为例

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科技进步与对策 2009年第15期26卷 64-67页

作者：吴华清刘志迎合肥工业大学人文经济学院安徽合肥230009

首先对价值链理论的发展演进进行了总结,指出产业价值网是联系产业价值链与区域经济的纽带,完善产业价值网是促进产业价值链与区域经济发展的关键所在。在此基础上,分析了产业价值网运作发展中的治理机制与动力机制等深层次问题,并以国... 详细信息

首先对价值链理论的发展演进进行了总结,指出产业价值网是联系产业价值链与区域经济的纽带,完善产业价值网是促进产业价值链与区域经济发展的关键所在。在此基础上,分析了产业价值网运作发展中的治理机制与动力机制等深层次问题,并以国外汽车产业发展为例,初步提出了安徽汽车产业东接发展的策略。

关键词：价值网价值链产业发展安徽汽车产业