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长三角城市群商品流通发展的时空演变特征、区域差异及分布动态演进

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上海交通大学学报（哲学社会科学版） 2024年第2期32卷 24-47页

作者：周正柱冯博文上海应用技术大学经济与管理学院上海200233

本文在运用熵权TOPSIS法对2011—2021年长三角城市群27个城市的商品流通发展水平指数进行测算的基础上,利用Dagum基尼系数、核密度估计及莫兰指数等方法对其区域差异、分布动态等进行探索。研究发现:(1)在时间演变方面,2011—2021年长... 详细信息

本文在运用熵权TOPSIS法对2011—2021年长三角城市群27个城市的商品流通发展水平指数进行测算的基础上,利用Dagum基尼系数、核密度估计及莫兰指数等方法对其区域差异、分布动态等进行探索。研究发现:(1)在时间演变方面,2011—2021年长三角城市群商品流通发展水平总体上呈增长态势,并呈“上海>浙江9城市>江苏9城市>安徽8城市”特征;四大子系统中商品流通发展水平指数最大,接下来依次是物流、信息流和人力资源流动水平指数。(2)在空间分布方面,在考察期内长三角城市群商品流通发展水平总体分布格局仍未发生明显变化,空间格局有向东南转移的趋势,大部分城市出现“高—高”集聚效应和“低—低”集聚效应,且呈集聚现象。(3)在区域差异方面,在考察期内长三角城市群商品流通发展水平区域总体差异呈扩大化趋势,其中区域间差异是主要来源。(4)在分布动态演进方面,长三角城市群整体商品流通发展水平不断提高,绝对差异呈扩大趋势;长三角城市群四大区域商品流通发展水平不断提高,绝对差异从整体上看呈扩大态势,而上海有缩小趋势,且均存在两级或多极化趋势。

关键词：长三角城市群商品流通莫兰指数 Dagum基尼系数核密度估计

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国际南北运输走廊发展进程与前景分析

印度洋经济体研究 2024年第4期 138-151,156页

作者：蒲公英冯博文四川外国语大学俄语学院

俄乌冲突爆发后,西方国家对俄制裁趋于常态化,欧亚运输网络中经俄罗斯进入欧洲的运输路线遭遇阻碍。在此背景下,联通波罗的海、里海、印度洋的南北向国际运输走廊地缘战略意义得到提升。以俄罗斯、伊朗、印度为代表的国家正将国际南北... 详细信息

俄乌冲突爆发后,西方国家对俄制裁趋于常态化,欧亚运输网络中经俄罗斯进入欧洲的运输路线遭遇阻碍。在此背景下,联通波罗的海、里海、印度洋的南北向国际运输走廊地缘战略意义得到提升。以俄罗斯、伊朗、印度为代表的国家正将国际南北运输走廊建设重新提上议事日程,试图在新的动荡变革时期寻求新的战略通道突破,为贸易发展与能源领域合作创造机遇。当前,国际南北运输走廊沿线国家的主观建设需求显著提升,但沿线国家发展走廊的主观需求与客观建设能力及货运需求不匹配的核心问题短期内难以解决。长远来看,国际南北运输走廊以里海—中亚为轴心,拥有与传统欧亚运输线路对接的重要潜力,有望促进欧亚运输体系的多象限发展,深度激发欧亚大陆的国际物流大通道作用。国际南北运输走廊辐射面广,需要沿线及辐射地区国家齐心协力积极应对复杂局面,共同营造多方共赢的开放发展格局。为发挥更为巨大的联通效应,国际南北运输走廊的未来发展离不开与“一带一路”倡议的务实对接。

关键词：国际南北运输走廊俄罗斯印度里海国家欧亚运输

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耳穴治疗肥胖的应用前景——经验与证据

北京中医药大学学报 2024年第7期47卷 889-894页

作者：冯博闻魏立新王瑜赵亚楠荣培晶中国中医科学院针灸研究所北京100700 中国中医科学院中医临床基础医学研究所

近年来,肥胖的发病率迅速增加,极大程度地增加了高血压、心脏病、非酒精性脂肪性肝病等疾病的发病率,降低肥胖的发病率已成为全球关注的焦点,亟须寻求有效且安全的治疗手段。耳穴疗法治疗肥胖的疗效已获得越来越多的证据支持,且具有“... 详细信息

近年来,肥胖的发病率迅速增加,极大程度地增加了高血压、心脏病、非酒精性脂肪性肝病等疾病的发病率,降低肥胖的发病率已成为全球关注的焦点,亟须寻求有效且安全的治疗手段。耳穴疗法治疗肥胖的疗效已获得越来越多的证据支持,且具有“安、验、便、廉”等优势。本文拟从理论发展、机制探索、技术创新等方面探讨耳穴治疗肥胖的研究现状,旨在推动耳穴治疗肥胖的临床应用。在多学科的助力下,传承与丰富耳穴治疗肥胖的理论内涵,证实其临床有效性、安全性,阐明其治疗肥胖的效应机制,改进传统耳穴疗法,是目前推动耳穴疗法用于治疗肥胖的可行方向,可使耳穴治疗肥胖拥有更为广阔的应用前景。

关键词：耳穴肥胖经皮耳穴电刺激临床应用机制探索

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Maskless fabrication of quasi-omnidirectional V-groove solar cells using an alkaline solution-based method

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Chinese Physics B 2024年第1期33卷 236-242页

作者：陈兴谦王燕陈伟刘尧平邢国光冯博文李昊臻孙纵横杜小龙 Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Beijing Hairou Laboratory Beijing 101400China

Silicon passivated emitter and rear contact(PERC) solar cells with V-groove texture were fabricated using maskless alkaline solution etching with in-house developed additive. Compared with the traditional pyramid texture, the V-groove texture possesses superior effective minority carrier lifetime, enhanced p–n junction quality and better applied filling factor(FF). In addition, a V-groove texture can greatly reduce the shading area and edge damage of front Ag electrodes when the V-groove direction is parallel to the gridline electrodes. Due to these factors, the V-groove solar cells have a higher efficiency(21.78%) than pyramid solar cells(21.62%). Interestingly, external quantum efficiency(EQE) and reflectance of the V-groove solar cells exhibit a slight decrease when the incident light angle(θ) is increased from 0° to 75°, which confirms the excellent quasi omnidirectionality of the V-groove solar cells. The proposed V-groove solar cell design shows a 2.84% relative enhancement of energy output over traditional pyramid solar cells.

关键词： V-groove alkaline etching quasi omnidirectionality silicon solar cell

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基于可解释性USL的抽油井电功率异常检测

沈阳理工大学学报 2024年第5期43卷 41-48页

作者：袁春华冯博文李翔宇沈阳理工大学自动化与电气工程学院沈阳110159

抽油井长期运行可能使有杆泵抽油系统出现异常工况,这种异常的产生与设备的持续退化有关,但其具体原因仍难以通过数据驱动的深度学习方法来分析和解释。为了能够及时准确地检测到异常工况并推断故障级别和故障类型,提出一种基于可解释... 详细信息

抽油井长期运行可能使有杆泵抽油系统出现异常工况,这种异常的产生与设备的持续退化有关,但其具体原因仍难以通过数据驱动的深度学习方法来分析和解释。为了能够及时准确地检测到异常工况并推断故障级别和故障类型,提出一种基于可解释性无监督Shapelet学习(unsupervised Shapelet learning, USL)算法的抽油井电功率异常检测方法。首先利用提取到的先验知识改进USL;然后将改进的USL与单分类器结合,构成基于可解释性USL的异常检测算法(AD-IUSL),AD-IUSL可同时学习Shapelet特征和异常阈值。利用具有不同异常工况的抽油井电功率数据进行验证,结果表明,本文提出算法的F1分数达到了0.969,根据学习到的Shapelet特征合理解释了两种异常发生的潜在原因。

关键词：抽油井异常检测可解释性 Shapelet学习算法

Spatiotemporal features and vertical structures of four types of mesoscale eddies in the Kuroshio Extension region

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Acta Oceanologica Sinica 2024年第5期43卷 30-40页

作者： bowen Sun Shuchang Xu Zhankun Wang Yujie feng Baofu Li School of Geography and Tourism Qufu Normal UniversityRizhao 276800China Faculty of Information Science and Engineering Ocean University of ChinaQingdao 266100China

Except for conventional mesoscale eddies,there are also abundant warm cyclonic eddies(WCEs)and cold anticyclonic eddies(CAEs)in the global *** on the global mesoscale eddy trajectory atlas product,satellite altimetric and remote sensing datasets,and three-dimensional temperature/salinity dataset,spatiotemporal features of WCEs and CAEs are compared with traditional cold cyclonic eddies and warm anticyclonic eddies in the Kuroshio Extension(KE;28°−43°N,140°−170°E)*** of abnormal eddies like radius,amplitude,eddy kinetic energy,and proportion in all eddies behave in significant asymmetry on the north and south sides of the KE *** eddies in the general sense,temporal feature analysis reveals that it is more favorable to the formation and maintenance of WCEs and CAEs in summer and autumn,while winter is the *** spatiotemporal variation of abnormal eddies is likely because the marine environment varying with time and ***,proportion of abnormal eddies increases rapidly in decaying stage during the whole eddy lifespan,resulting in smaller average radius,amplitude,sea surface temperature anomaly and sea surface height anomaly compared to normal *** three-dimensional composite structures for four types of eddies expose that the difference between abnormal and conventional eddies is not just limited to the sea surface,but also exists within the water below the sea *** structures also indicate that the anomalous temperature signal is confined in the water from the sea surface to layers at about 30 m in the KE region.

关键词： mesoscale anomaly Kuroshio

Design,preparation,application of advanced array structured materials and their action mechanism analyses for high performance lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第2期89卷 266-303,I0007页

作者： Nanping Deng Xiaofan feng Yongbing Jin Zhaozhao Peng Yang feng Ying Tian Yong Liu Lu Gao Weimin Kang bowen Cheng State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes School of Textile Science and EngineeringTiangong UniversityTianjin 300387China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Lithium-sulfur battery(LSB)has brought much attention and concern because of high theoretical specific capacity and energy density as one of main competitors for next-generation energy storage *** widely commercial application and development of LSB is mainly hindered by serious“shuttle effect”of lithium polysulfides(Li PSs),slow reaction kinetics,notorious lithium dendrites,*** various structures of LSB materials,array structured materials,possessing the composition of ordered micro units with the same or similar characteristics of each unit,present excellent application potential for various secondary cells due to some merits such as immobilization of active substances,high specific surface area,appropriate pore sizes,easy modification of functional material surface,accommodated huge volume change,enough facilitated transportation for electrons/lithium ions,and special functional groups strongly adsorbing Li *** many novel array structured materials are applied to battery for tackling thorny problems mentioned *** this review,recent progresses and developments on array structured materials applied in LSBs including preparation ways,collaborative structural designs based on array structures,and action mechanism analyses in improving electrochemical performance and safety are ***,we also have detailed discussion for array structured materials in LSBs and constructed the structure-function relationships between array structured materials and battery ***,some directions and prospects about preparation ways,functional modifications,and practical applications of array structured materials in LSBs are *** hope the review can attract more researchers'attention and bring more studying on array structured materials for other secondary batteries including LSB.

关键词： Array structured materials Preparation methods and structural designs Action mechanism analyses Advanced Li-S batteries Excellent electrochemical performances and safety

How to apply polar codes in high throughput space communications

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Science China(Technological Sciences) 2020年第8期63卷 1371-1382页

作者： feng bowen JIAO Jian WU ShaoHua ZHANG QinYu Communication Engineering Research Center Harbin Institute of Technology(Shenzhen)Shenzhen 518055China

This paper describes how to apply polar codes in high-throughput space *** high throughput space communications can enable terabit data rate capacity wideband wireless transmissions,and offer service availability of anywhere and *** paper investigates the channel characteristics in space *** channels are lossy,time-varying,intermittent,long-latency,and with imperfect channel state information(CSI).In order to make the polar codes suitable for the space channel,some improvements and designs on the polar codes are provided in this *** encoding and decoding methods of polar codes are discussed,which are the key to determine the *** describe some rateless polar coding schemes that can guide the construction of suitable codes for time-varying channels with no-CSI in long-haul ***,a high-rate parallel concatenation scheme of polar codes is introduced,which can improve the anti-interrupt ability of polar ***,in order to support the massive connectivity requirements of future space communication networks,polar-coded sparse-code-multiple-access(SCMA)schemes are investigated.

关键词： space communications polar code concatenated coding high throughput

Effect of purine diet on prognosis of deep brain stimulation for Parkinson's disease

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Food Science and Human Wellness 2024年

作者： bowen Chang Yuge Jiang Chuanxing feng bowen Li Jiaming Mei Chaoshi Niu Key Laboratory of Xin'an Medicine Ministry of Education Anhui Province Key Laboratory of R&D of Chinese Medicine Anhui University of Chinese Medicine 3. Center for Food Nutrition and Functional Food Engineering School of Food Science and Technology Jiangnan University Department of Neurosurgery The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China

Uric acid (UA) is a naturally antioxidant that is strongly associated with the development and progression of Parkinson’s disease (PD). The purine diet is an important exogenous pathway that modulates blood UA levels. Deep brain stimulation (DBS) is an important tool for PD treatment. This study aimed to explore the effects of preoperative purine diet on the prognosis of patients with PD after DBS. 64 patients with PD who underwent DBS were included in this study， and their clinical data， blood UA values， and daily purine intake. Patients were followed up for improvement 1 year after surgery. We found that patient higher purine intake was strongly associated with the rate of improvement after DBS and was a protective factor for patient prognosis. Daily purine intake from meat and seafood was significantly higher in the responsive patients than in the less-responsive patients. Mediation analysis showed that UA mediated 78% of the effect of purine intake on motor symptom improvement after DBS. In summary， we observed that purine intake is strongly associated with the rate of improvement in motor symptoms after STN-DBS in patients with PD. This study provides a reference for preoperative diet planning in patients with Parkinson’s disease undergoing DBS.

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