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Scalable Temporal Dimension Preserved Tensor Completion for Missing Traffic Data Imputation With Orthogonal Initialization

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IEEE/CAA Journal of Automatica Sinica 2024年第10期11卷 2188-2190页

作者： Hong Chen Mingwei Lin Jiaqi Liu Zeshui Xu school of Mathematics and Statistics Fujian Normal UniversityFuzhou 350117China College of Computer and Cyber Security Fujian Normal UniversityFuzhou 350117China business school Sichuan UniversityChengdu 610064China IEEE

Dear Editor,This letter puts forward a novel scalable temporal dimension preserved tensor completion model based on orthogonal initialization for missing traffic data(MTD)*** MTD imputation acts directly on accessing ... 详细信息

关键词： Dimension management traffic

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Digital Revolution and Job Quality of Lower Class Workers: Quasi-experimental Evidence from the Broadband china Program

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china & World Economy 2024年第4期32卷 146-178页

作者： Xiumei Wang Ye Jiang Famin Yi school of business Fuyang Normal UniversityChina Department of Economics Dickinson CollegeUSA school of Economics and Management South China Agricultural UniversityChina

This study examines the impact of the digital revolution on the job quality of workers with a specific focus on those at the lowest end of the spectrum in china's domestic labor market. Leveraging exogenous timing variations that result from the implementation of the Broadband china Program across different cities, it provides quasi-experimental evidence concerning the effects of the digital revolution on the job quality of lower class workers, particularly rural–urban migrant workers. Using data from china Migrants Dynamic Survey, this study reveals that migrants' comprehensive job quality index increased by 0.0138 (5.33 percent), and its component indices experienced positive effects after the Broadband china Program was implemented. This study also investigates heterogeneous policy treatment effects among workers with diverse demographic and occupational characteristics. Underlying mechanisms are considered, including positive macroeconomic shocks, increased social interactions, and Internet use. In particular, migrants' attitudes toward local settlement became more positive, suggesting that the positive effects of the digital revolution on livelihood lasted for some time. Taking china as an example, this study contributes valuable empirical evidence of how the digital revolution can affect lower class workers' employment or living conditions in a developing country. Related policy implications are also considered.

关键词： Broadband china Program digital revolution job quality lower clas workers rural-urban migrants

Do smart city policies improve energy efficiency?Evidence from china

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Chinese Journal of Population,Resources and Environment 2024年第2期22卷 185-193页

作者： Zhilong Qin Haoming Yang Lei Shi Ouyang Ying Wenhan Liu Institute of Western china Economic Research Southwestern University of Finance and EconomicsChengdu 611130China school of Law Southwestern University of Finance and EconomicsChengdu 611130China school of business The University of QueenslandQueensland 4072Australia West china school of Medicine West China Hospital of Sichuan UniversityChengdu 610041China business school Chengdu UniversityChengdu 610106China

To address air pollution and offer a convenient and comfortable living environment,the Chinese government launched a smart city pilot(SCP)project in 2012,accompanied by a comprehensive set of environmental and energy-related laws and *** academic interest in smart cities has surged,there remains a notable gap in empirical research exploring the economic,environmental,and energy effects of such *** 232 prefecture-level cities from 2003 to 2017 as research subjects,this study measures energy effi‐ciency by using energy consumption per unit of GDP and adopts a difference-in-differences(DID)analysis to investigate the impact of SCPs on energy *** empirical results indicate that SCPs improved energy efficiency by promoting urban technological innovation capabilities and green total factor productivity,and this effect was more pronounced in cities that were more dependent on traditional fossil fuel energy sources and had more developed fiscal and financial *** the impact of smart city construction on energy utilization efficiency in developing countries,such as china,is not only significantly enlightening for china’s green and low-carbon transition but also provides reference opinions for constructing smart cities and the path to enhancing energy efficiency in other developing *** findings provide valuable insights into the global development of smart cities,urban sustainability,and high-quality economic growth.

关键词： Smart city project Energy efficiency Legislation on environment and energy Technological innovation capabilities Green total factor productivity Difference-in-differences

A short review of antibacterial Cu-bearing stainless steel:antibacterial mechanisms,corrosion resistance,and novel preparation techniques

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Journal of Iron and Steel Research International 2024年第1期31卷 24-45页

作者： Shuai Liu Han-jie Guo school of Artificial Intelligence Beijing Technology and Business UniversityBeijing100048China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials University of Science and Technology BeijingBeijing100083China

Cu-bearing stainless steel is widely used in the fields of food,medical and household sanitary equipment because of its surface finish and corrosion ***,the growth of bacteria on stainless steel leads to the formation of biofilms,which causes ***,the antibacterial property of stainless steel is a worthy research *** of breakthroughs in the field of corrosion resistance and antimicrobial properties are still ***,due to the scarcity of publications on the antibacterial mechanisms and processing methods of antibacterial Cu-bearing stainless steel,we review the current state of relevant research and *** toxicity of Cu,corrosion resistance mechanism of stainless steel,and antibacterial mechanism and preparation method of antibacterial stainless steel are *** addition,alloying,surface modification and other methods are found to have limitations in balancing the toxicity and antibacterial properties of copper and the relationship between the antibacterial properties and corrosion resistance of Cu-bearing stainless steel.A new preparation method of antibacterial stainless steel associated with selective laser melting(SLM)is *** is becoming a powerful additive manufacturing technology that can be used to manufacture customized and complex *** research status of SLM applied in antibacterial stainless steel preparation is ***,the future research direction of Cu-bearing antibacterial stainless steel is discussed.

关键词： Cu-bearing stainless steel Antibacterial Processing Additive manufacturing Corrosion resistance

CNT array-induced nanobubble assembly,nanodisk fabrication and enhanced spectral detection of CNT bundle density

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Nano Research 2024年第8期17卷 7737-7745页

作者： Zhiyuan Xia Ziming Ye Bo Zhao Tingsong Zhang Qi Wang Kun Chen Meng Li Xiaobing Kong Yu-Qing Zheng Enzheng Shi Yuanyuan Shang Anyuan Cao school of Materials Science and Engineering Peking UniversityBeijing 100871China school of Integrated Circuits Peking UniversityBeijing 100871China school of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China school of Engineering Westlake UniversityHangzhou 310024China

Alignment,functionalization and detection of carbon nanotube(CNT)bundles are vital processes for utilizing this onedimensional nanomaterial in ***,we report a polymer-assisted wet shearing method to acquire super-aligned craterpatterned CNT arrays by nanobubble(NB)self-assembly with a"migrate and aggregation"mechanism and use craters to controllably mold even-sized nanodisks periodically along CNT bundles with tunable *** green,low-cost method can be extended to diverse substrates and fabricate different *** an example,the Ag-nanodisk-patterned CNT arrays are utilized as substrates of surface-enhanced Raman scattering(SERS)for rhodamine 6G(R6G)and methylene blue(MB)in which a linear correlation is found between the SERS intensity and the CNT bundle density due to the periodic distribution of hot spots,enabling a spectral detection of CNT bundles and their densities by conventional dye *** from routine morphological characterization,this spectral method possesses an enhanced accuracy and a detection range of 0.1–2μm^(–1),showing its uniqueness in the detection of CNT bundle density since the intensity of traditional spectral merely relates to the quantity of CNTs,exhibiting its potential in future CNT-bundle-based electronics.

关键词： CNT arrays nanobubbles self-assembly nanodisks surface-enhanced Raman scattering(SERS)

High-Performance All-Printed Flexible Micro-Supercapacitors with Hierarchical Encapsulation

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Energy & Environmental Materials 2024年第4期7卷 262-268页

作者： Yuhang Yuan Wei Yuan Yaopeng Wu Xuyang Wu Xiaoqing Zhang Simin Jiang Bote Zhao Yu Chen Chenghao Yang Liangxin Ding Zhenghua Tang Yingxi Xie Yong Tang school of Mechanical & Automotive Engineering South China University of Technology school of Environment and Energy South China University of Technology school of Chemistry and Chemical Engineering South China University of Technology

Printed micro-supercapacitors (MSCs) have shown broad prospect in flexible and wearable *** of previous studies focused on printing the electrochemically active materials paying less attention to other key components like current collectors and *** study presents an allprinting strategy to fabricate in-plane flexible and substrate-free MSCs with hierarchical encapsulation.

关键词： all-printing flexible hierarchical encapsulation micro-supercapacitors substrate-free

Quasi-shadowing for Z^(d)-actions

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Acta Mathematica Sinica,English Series 2024年第6期40卷 1563-1580页

作者： Juan PAN Xian Kun REN Yun Hua ZHOU school of Mathematics and Statistics Chongqing Technology and Business UniversityChongqing 400067P.R.China College of Mathematics and Statistics Chongqing UniversityChongqing 401331P.R.China

A diffeomorphism is non-uniformly partially hyperbolic if it preserves an ergodic measure with at least one zero Lyapunov *** prove that a C^(1)-smooth Z^(d)-action has the quasishadowing property if one of the genera... 详细信息

关键词： Quasi-shadowing Z^(d)-action non-uniformly partially hyperbolic ergodic measure

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Identification of Linear Systems Using Binary Sensors with Random Thresholds

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Journal of Systems Science & Complexity 2024年第3期37卷 907-923页

作者： HUANG Zhiyong SONG Qijiang school of Mathematics Renmin University of ChinaBeijing 100872China school of Mathematics Sino-French InstituteRenmin University of ChinaBeijing 100872China

In this paper,the problem of identifying autoregressive-moving-average systems under random threshold binary-valued output measurements is *** the help of stochastic approximation algorithms with expanding truncations,the authors give the recursive estimates for the parameters of both the linear system and the binary *** reasonable conditions,all constructed estimates are proved to be convergent to the true values with probability one,and the convergence rates are also established.A simulation example is provided to justify the theoretical results.

关键词： α-mixing binary sensor quantized system stochastic approximation stochastic thresh-old strongly consistent system identification

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Provoking Buying Behaviors Amid Crises:Unfolding the Underlying Mechanisms of Psychological Impairments

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International Journal of Mental Health Promotion 2024年第4期26卷 279-292页

作者： Muhammad Waleed Ayub Ghouri Guofeng Wang Muhammad Ali Hussain Zhisheng Li Tachia Chin school of Management Zhejiang University of TechnologyHangzhou310023China school of Management and Economics University of Electronic Science and Technology of ChinaChengdu611731China business school NingboTech UniversityNingbo315100China

Crises in the past have caused devastating,long-lasting impacts on the global *** after-effects always bring some dynamic and rigorous challenges for businesses and *** challenges have always been a point of discussion for *** recent COVID-19 pandemic emaciated the global economy,leaving everyone mired in uncertainty,fear,and psychological *** of the headwind features utilized by consumers during pandemic was panic buying(PB),which must be explored in various contexts for policymakers and *** address this gap,this study deployed a moderated mediation mechanism,integrating the health belief model(HBM)and competitive arousal theory(CAT)to excavate the notions underlying PB with the intrusion of evolved real-time psychological disorders:intolerance of uncertainty(IU)and cyberchondria(CYC).The study was conducted as a natural experiment in a South Asian developing economy using online *** found that health beliefs—perceived severity(PSV)and perceived susceptibility(PSC)—positively impact perceived arousal(PA),which causes PB,and that PA has a sturdy mediator ***,in the relationship between health beliefs and arousal,the different psychological disorders were found to have significant moderating roles The study findings can help mitigate risk uncertainties and panic situations and thus contribute to consumers’wellbeing.

关键词： Panic buying health belief model mental health competitive arousal theory intolerance of uncertainty cyberchondria