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环境行为学视角下城市涂鸦的空间建构机制研究——以文创产业区为例

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城市发展研究 2024年第4期31卷 125-134页

作者：王澜张霞谢澳林武汉大学城市设计学院华中科技大学建筑与规划学院

涂鸦艺术自1960年代在世界各大城市普及以来，成为一种典型且有争议的城市社会文化现象。在城市存量更新与文化产业快速发展的背景下，涂鸦与经济不断融合，目前涂鸦艺术已成为我国文化创意产业区的重要元素，涂鸦艺术对文化创意产业的... 详细信息

涂鸦艺术自1960年代在世界各大城市普及以来，成为一种典型且有争议的城市社会文化现象。在城市存量更新与文化产业快速发展的背景下，涂鸦与经济不断融合，目前涂鸦艺术已成为我国文化创意产业区的重要元素，涂鸦艺术对文化创意产业的驱动以及空间的建构作用正逐渐显现。本研究从环境行为学的视角出发，探讨城市涂鸦的空间建构机制，选取我国典型文创产业区：北京798艺术区、重庆黄桷坪艺术区和上海M50创意园为研究对象，基于网络评价文本数据进行高频词分析、情感倾向分析和社会语义网络分析，探讨文创产业区涂鸦艺术的感知要素、空间建构作用与机制，对涂鸦艺术的运用与管理提出建议，为未来的城市更新设计提供新的思路。

关键词：城市涂鸦空间建构机制环境行为学文创产业区网络文本数据

cellular chemical Field and cellular Homeostasis

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Engineering 2024年第8期39卷 18-24页

作者： Bin cong Lu Li Qian wang Tao He Junwei Li Hongliang Xie aolin Zhang Xiaohui Fan Hebei Key Laboratory of Forensic Medicine College of Forensic MedicineHebei Medical UniversityShijiazhuang 050017China college of Integrated Traditional chinese and Western Medicine Hebei Medical UniversityShijiazhuang 050017China Research Unit of Digestive Tract Microecosystem Pharmacology and Toxicology Chinese Academy of Medical SciencesShijiazhuang 050017China Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Key Laboratory of chinese Medicine Modernization Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China Department of Obstetrics and Gynecology Sir Run Run Shaw HospitalMedical College of Zhejiang UniversityHangzhou 310058China Department Obstetrics and Gynaecology Prince of Wales HospitalThe Chinese University of Hong KongHong Kong 999077China

*** cell structure and function are controlled by a complex regulatory networking process,in which molecular adaptation and interaction are essential to maintain cellular homeostasis following dynamic multi-omics rules and multi-systematic *** complex chemical process is an important mechanism for stabilizing the cell microenvironment.

关键词： maintain stabilizing cellular

Decision and coordination of an E-commerce Supply chain considering Returns and Network Externalities

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Journal of Systems Science and Systems Engineering 2024年第5期33卷 552-575页

作者： Liang Shen Fei Lin Yuyan wang Luping Ding T.c.E.cheng Dexia wang School of Public Finance and Taxation Shandong University of Finance and Economicsjinan 250014China bschool of Management Science and Engineering Shandong University of Finance and EconomicsJinan 250014China PolyU Business School The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 999077China

considering the large number of returns in online sales and the network externalities of e-platforms,we develop a decentralized model and a centralized model to explore the impacts of returns and network externalities on e-commerce supply chain(EcSc)*** show that in the decentralized model,the service level,price,market demand,and EcSc members’profits increase with the network externality ***,the service level and price increase,while the market demand and EcSc members’profits decrease with the product return *** centralized model is the optimal operating mode when it is properly *** design the“commission and return cost-sharing”contract to optimize EcSc,in which the proportion of the e-platform’s sharing of the return handling cost is exactly equal to the proportion of the system profit after *** on the decentralized model,we develop two extended models in which we endogenize the impacts of the service level and return rate on the network externality *** comparisons between the extended and decentralized models,we show that high-quality service can improve EcSc’s profitability,while a high return rate hurts its economic performance.

关键词： E-commerce supply chain coordination mechanism network externalities return products

Pathogenic and therapeutic role of exosomes in neurodegenerative disorders

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Neural Regeneration Research 2024年第1期19卷 75-79页

作者： christa c.Huber Hongmin wang Division of Basic Biomedical Sciences Sanford School of MedicineUniversity of South DakotaVermillionSDUSA

Neurodegenerative disorders affect millions of people worldwide,and the prevalence of these disorders is only projected to rise as the number of people over 65 will drastically increase in the coming *** therapies exist to aid in symptomatic relief,effective treatments that can stop or reve rse the progress of each neurodegenerative disease are ***,research on the role of extracellular vesicles as disease markers and therapeutics has been intensively ***,30-150 nm in diameter,are one type of extracellular vesicles facilitating cell-to-cell *** are thought to play a role in disease propagation in a variety of neurodegenerative diseases,such as Alzheimer's disease,Parkinson s disease,and amyotrophic lateral ***,the exosomes derived from the patients are an invaluable source of disease *** the other hand,exosomes,especially those derived from stem cells,could serve as a therapeutic for these disorders,as seen by a rapid increase in clinical trials investigating the therapeutic efficacy of exosomes in different neurological *** review summarizes the pathological burden and therapeutic approach of exosomes in neurodegenerative *** also highlight how heat shock increases the yield of exosomes while still maintaining their therapeutic ***,this review concludes with outstanding questions that remain to be addressed in exosomal research.

关键词： aging Alzheimer's disease biomarker drug exosome extracellular vesicle neurodegenerative disease Parkinson's disease therapy

Automated Machine Learning Algorithm Using Recurrent Neural Network to Perform Long-Term Time Series Forecasting

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computers, Materials & continua 2024年第3期78卷 3529-3549页

作者： Ying Su Morgan c.wang Shuai Liu Department of Statistics and Data Science University of Central FloridaOrlandoFL32816-2370USA School of Mathematics and Statistics Beijing Technology and Business UniversityBeijing100048China

Long-term time series forecasting stands as a crucial research domain within the realm of automated machine learning(AutoML).At present,forecasting,whether rooted in machine learning or statistical learning,typically relies on expert input and necessitates substantial manual *** manual effort spans model development,feature engineering,hyper-parameter tuning,and the intricate construction of time series *** complexity of these tasks renders complete automation unfeasible,as they inherently demand human intervention at multiple *** surmount these challenges,this article proposes leveraging Long Short-Term Memory,which is the variant of Recurrent Neural Networks,harnessing memory cells and gating mechanisms to facilitate long-term time series ***,forecasting accuracy by particular neural network and traditional models can degrade significantly,when addressing long-term time-series ***,our research demonstrates that this innovative approach outperforms the traditional Autoregressive Integrated Moving Average(ARIMA)method in forecasting long-term univariate time *** is a high-quality and competitive model in time series prediction,and yet it requires significant preprocessing *** multiple accuracy metrics,we have evaluated both ARIMA and proposed method on the simulated time-series data and real data in both short and long ***,our findings indicate its superiority over alternative network architectures,including Fully connected Neural Networks,convolutional Neural Networks,and Nonpooling convolutional Neural *** AutoML approach enables non-professional to attain highly accurate and effective time series forecasting,and can be widely applied to various domains,particularly in business and finance.

关键词： Automated machine learning autoregressive integrated moving average neural networks time series analysis

A Sharding Scheme Based on Graph Partitioning Algorithm for Public Blockchain

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computer Modeling in Engineering & Sciences 2024年第6期139卷 3311-3327页

作者： Shujiang Xu Ziye wang Lianhai wang Miodrag J.Mihaljevi′c Shuhui Zhang Wei Shao Qizheng wang Key Laboratory of computing Power Network and Information Security Ministry of EducationShandong Computer Science CenterQilu University of Technology(Shandong Academy of Sciences)Jinan250014China Shandong Provincial Key Laboratory of computer Networks Shandong Fundamental Research Center for Computer ScienceJinan250014China Mathematical Institute The Serbian Academy of Sciences and ArtsBelgrade11000Serbia

Blockchain technology,with its attributes of decentralization,immutability,and traceability,has emerged as a powerful catalyst for enhancing traditional industries in terms of optimizing business ***,transaction performance and scalability has become the main challenges hindering the widespread adoption of *** to its inability to meet the demands of high-frequency trading,blockchain cannot be adopted in many *** improve the transaction capacity,researchers have proposed some on-chain scaling technologies,including lightning networks,directed acyclic graph technology,state channels,and shardingmechanisms,inwhich sharding emerges as a potential scaling ***,excessive cross-shard transactions and uneven shard workloads prevent the sharding mechanism from achieving the expected *** paper proposes a graphbased sharding scheme for public blockchain to efficiently balance the transaction *** crossshard transactions and evening-out workloads among shards,the scheme reduces transaction confirmation latency and enhances the transaction capacity of the ***,the scheme can achieve a high-frequency transaction as well as a better blockchain *** results show that the scheme effectively reduces the cross-shard transaction ratio to a range of 35%-56%and significantly decreases the transaction confirmation latency to 6 s in a blockchain with no more than 25 shards.

关键词： Blockchain sharding graph partitioning algorithm

2023年中国天然气发展述评及2024年展望

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天然气工业 2024年第2期44卷 166-177页

作者：高芸王蓓胡迤丹高钰杰胡奥林中国石油西南油气田公司天然气经济研究所中国石油集团川庆钻探工程有限公司酒店管理公司中国石油集团共享运营有限公司成都中心中国石油西南油气田公司

为了助力产业高质量发展、助推中国式现代化建设,收集、整理、分析了中国天然气行业2023年的各项指标、数据和动态,论述和研判了2023年中国天然气产业链各环节以及天然气市场的热点和亮点,进而展望了2024年中国天然气行业的发展前景。... 详细信息

为了助力产业高质量发展、助推中国式现代化建设,收集、整理、分析了中国天然气行业2023年的各项指标、数据和动态,论述和研判了2023年中国天然气产业链各环节以及天然气市场的热点和亮点,进而展望了2024年中国天然气行业的发展前景。研究结果表明,2023年中国天然气发展稳中有进、不乏亮点,主要表现在:(1)天然气勘探全面开花,预计新增天然气探明地质储量或创历史新高;(2)天然气生产稳中有进,全年共生产天然气2 324×10^(8)m^(3),年增产量近123×10^(8)m^(3);(3)天然气进口量增价跌(共进口天然气1 655.6×10^(8)m^(3)),其中LNG进口量重返世界第一(进口量为984.2×10^(8)m^(3));(4)天然气需求量小幅度反弹,天然气表观消费量达3 915.5×10^(8)m^(3),天然气对外依存度为40.6%,市场供应平稳;(5)天然气基础设施建设方兴未艾,LNG接收站、天然气长输管道和地下储气库建设有新进展;(6)在推进实现碳达峰碳中和目标和建设新型能源体系的形势下,油气生产企业大力拓展新能源业务;(7) LNG重卡销量创历史新高(共销售15.19万辆),用气增量异军突起;(8)国家问政于民,新版《天然气利用政策》面向全社会征求意见。结论认为:(1)尽管中国天然气增量市场面临着煤炭“压舱石”和新能源的竞争,但天然气仍然是中国能源结构低碳化发展过程中的桥梁和支柱,不可或缺;(2)预计2024年天然气勘探力度不减,探明天然气地质储量增势依旧;(3)天然气生产稳中有进,增产量与2023年相当;(4)天然气进口量将大幅度增加,天然气进口均价将继续下降;(5)天然气需求量平稳增长,市场供应宽松。

关键词：中国天然气勘探开发储量产量消费量进口量基础设施建设发展展望

Room-temperature ferromagnetism and half-metallicity in monolayer orthorhombic crS_(2)

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Frontiers of physics 2024年第4期19卷 137-146页

作者：雷博程李奥林周文哲王云鹏熊威陈羽欧阳方平 School of Physics Science and Technology and Xinjiang Key Laboratory of Solid-State Physics and DevicesXinjiang UniversityUrumqi 830046China School of Physics and Hunan Key Laboratory for Super-Microstructure and Ultrafast Processand Hunan Key Laboratory of Nanophotonics and DevicesCentral South UniversityChangsha 410083China School of Physics Science and Technology and Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter PhysicsYili Normal UniversityYining 835000China Powder Metallurgy Research Institute and State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

Two-dimensional materials with high-temperature ferromagnetism and half-metallicity have the latest applications in spintronic *** on first-principles calculations,we have investigated a novel two-dimensional crS_(2) phase with an orthorhombic *** results suggest that it is stable in dynamics,thermodynamics,and *** ground state of monolayer orthorhombic crS_(2) is both ferromagnetic and half-metallic,with a high curie temperature of 895 K and a large spin-flipping gap on values of 0.804 *** room-temperature ferromagnetism and halfmetallicity can maintain stability against a strong biaxial strain ranging from–5%to 5%.Meanwhile,increasing strain can significantly maintain the out-of-plane magnetic anisotropy.A density of states analysis,together with the orbital-resolved magnetic anisotropy energy,has revealed that the strain-enhanced MAE is highly related to the 3d-orbital splitting of cr *** results suggest the monolayer orthorhombic crS_(2) is an ideal candidate for future spintronics.

关键词： orthorhombic crS_(2) curie temperature magnetic anisotropy energy biaxial strain first-principles calculations

Mechanistic insight into cr(Ⅵ)retention by Si-containing ferrihydrite

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Journal of Environmental Sciences 2024年第5期139卷 217-225页

作者： Ying Hu Qiang Xue Honghan chen Huaming Guo Kenneth c.carroll Song wang MOE Key Laboratory of Groundwater circulation and Environmental Evolution School of Water Resources and EnvironmentChina University of Geosciences(Beijing)Beijing 100083China Beijing Key Laboratory of Water Resources and Environmental Engineering School of Water Resources and EnvironmentChina University of GeosciencesBeijing 100083China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China Plant&Environmental Science New Mexico State UniversityNM 88003USA Institute of Theoretical chemistry College of ChemistryJilin UniversityChangchun 130023China

Hexavalent chromium[cr(Ⅵ)]causes serious harm to the environment due to its high toxicity,solubility,and ***(Fh)are the main adsorbent and trapping agent of cr(Ⅵ)in soils and aquifers,and they usually coexist with silicate(Si),forming Si-containing ferrihydrite(Si-Fh)***,the mechanism of cr(Ⅵ)retention by Si-Fh mixtures is poorly *** this study,the behaviors and mechanisms of cr(Ⅵ)adsorption onto Si-Fh with different Si/Fe molar ratios was *** electron microscope,Fourier transform infrared spectroscopy,X-ray diffraction,X-ray photoelectron spectroscopy,and other techniques were used to characterize Si-Fh and cr(Ⅵ)-loading of *** results show that specific surface area of Si-Fh increases gradually with increasing Si/Fe ratios,but cr(Ⅵ)adsorption on Si-Fh decreases with increasing Si/Fe *** is because with an increase in Si/Fe molar ratio,the point of zero charge of Si-Fh gradually decreases and electrostatic repulsion between Si-Fh and cr(Ⅵ)***,the complexation of cr(Ⅵ)is enhanced due to the increase in adsorbed hydroxyl(A-OH-)on Si-Fh with increasing Si/Fe molar ratio,which partly counteracts the effect of the electrostatic ***,the increase in the electrostatic repulsion has a greater impact on adsorption than the additional complexation with *** functional theory calculation further supports this observation,showing the increases in electron variation of bonding atoms and reaction energies of inner spherical complexes with the increase in Si/Fe ratio.

关键词： Hexavalent chromium Ferrihydrite Si/Fe ratio cr(Ⅵ)Adsorption