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Nonaqueous potassium-ion full-cells:Mapping the progress and identifying missing puzzle pieces

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Journal of energy Chemistry 2024年第6期93卷 384-399,I0010页

作者： Badre Larhrib Louiza Larbi Lénaïc Madec Universite de Pau et des Pays de l’Adour E2S UPPACNRSIPREMPauFrance Universitéde Haute-Alsace Institut de Science des Matériaux de Mulhouse(IS2M)CNRS UMR 7361F-68100 MulhouseFrance Universitéde Strasbourg F-67081 StrasbourgFrance Réseau sur le Stockage electrochimique de l’energie CNRS FR3459AmiensFrance Institut des Matériaux Jean Rouxel(IMN) CNRS UMR 6502Univ.Nantes44322 Cedex 3 NantesFrance

This review addresses the growing interest for potassium-ion full-cells(KIFCs)in view of the transition from potassium-ion half-cells(KIHCs)toward commercial K-ion batteries(KIBs).It focuses on the key parameters of KIFCs such as the electrode/electrolyte interfaces challenge,major barriers,and recent advancements in *** strategies for enhancing KIFC performance,including interfaces co ntrol,electrolyte optimization,electrodes capacity ratio,electrode material screening and electrode design,are *** review highlights the need to evaluate KIBs in full-cell configurations as half-cell results are strongly impacted by the K metal *** also emphasizes the importance of understanding solid electrolyte interphase(SeI)formation in KIFCs and explores promising nonaqueous as well as quasiand all-solid-state electrolytes *** review thus paves the way for practical,cost-effective,and scalable KIBs as energy storage systems by offering insights and guidance for future research.

关键词： K-ion full-cells Potassium-ion batteries Cross-talk Solid-state batteries Potassium reactivity electrolyte design electrode design

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社区环境与活动空间共享对社区归属感的影响

地理研究 2024年第9期43卷 2343-2353页

作者：塔娜孙翊豪华东师范大学地理科学学院上海200241 华东师范大学地理信息科学教育部重点实验室上海200241 自然资源部超大城市自然资源时空大数据分析应用重点实验室上海200241

社会转型与移动性背景下,个体与社区环境的互动方式不断重构,社区归属感的形成路径更加复杂。基于此,本文利用上海市居民活动与出行调查数据,建立公共接触潜力的广度、强度和跨群体接触指数测度居民的社区活动空间共享特征,运用有序logi... 详细信息

社会转型与移动性背景下,个体与社区环境的互动方式不断重构,社区归属感的形成路径更加复杂。基于此,本文利用上海市居民活动与出行调查数据,建立公共接触潜力的广度、强度和跨群体接触指数测度居民的社区活动空间共享特征,运用有序logit模型探究社区环境、活动空间共享对居民社区归属感的影响。研究发现:①公共接触潜力广度和跨收入群体公共接触潜力对社区归属感具有负向影响,跨户口群体公共接触潜力具有正向影响,公共接触潜力强度影响不显著。②社区外来人口比例较高有利于提升社区归属感,说明社区社会组成多样有利于提升对社区的情感依赖。③社区环境感知对社区归属感具有正向影响,商品房居民比其他社区居民更有可能表现出高社区归属感。④本地、中收入、已婚和拥有住房产权的居民更有可能对社区产生情感依赖,但日常活动远离社区的人更难建立起对社区的情感。本文提出通过活动空间共享深化移动性背景下社区促进社会融合的机制研究,丰富社区社会融合理论,为构建包容性城市和促进高质量发展提供参考。

关键词：行为地理学户口社会融合社区活动空间

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地铁可达性对生活满意度的影响研究进展

科技导报 2024年第3期42卷 44-52页

作者：塔娜王琦华东师范大学地理信息科学教育部重点实验室上海200241 华东师范大学地理科学学院上海200241 自然资源部超大城市自然资源时空大数据分析应用重点实验室上海200241

总结了地铁可达性的测度方法,梳理了地铁可达性对生活满意度影响的直接与间接效应,构建了地铁可达性对生活满意度影响的行为框架,以行为地理学与城市规划的相关理论为基础,从微观个体的视角出发,探讨地铁可达性、个体时空间行为、生活... 详细信息

总结了地铁可达性的测度方法,梳理了地铁可达性对生活满意度影响的直接与间接效应,构建了地铁可达性对生活满意度影响的行为框架,以行为地理学与城市规划的相关理论为基础,从微观个体的视角出发,探讨地铁可达性、个体时空间行为、生活满意度三者之间的关系。

关键词：地铁可达性时空间行为生活满意度行为地理学

The Influence of Different Solar System Planetary ephemerides on Pulsar Timing

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Research in Astronomy and Astrophysics 2024年第8期24卷 85-99页

作者： Jian-Peng Dai Wei Han na Wang School of Physical Science and Technology Xinjiang UniversityUrumqi 830046China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Xinjiang Key Laboratory of Radio Astrophysics Urumqi 830011China

Pulsar timing offers a comprehensive avenue for exploring diverse topics in physics and *** solar system planetary ephemeris is crucial for pulsar timing as it provides the positions and velocities of solar system planets including the ***,it is inevitable that inherent inconsistencies exist in these *** between various ephemerides can significantly impact pulsar timing and parameter ***,pulsar timing highly depends on the JPL De ephemeris,for instance,the Pulsar Timing Array data analysis predominantly utilizes *** this study,we examine inconsistencies across various ephemeris series,including JPL De,ePM,and ***,discrepancies emerge particularly between the current ephemeris De436 and the earliest released ephemeris De200,as well as the most recent ephemerides,e.g.,De440,INPOP21A,and *** detailed analysis of the effects of ephemeris on geometric correction procedures for the conversion of measured topocentric times of arrival is presented in this *** researches reveal that variations in the Roemer delays across different ephemerides lead to distinct *** timing residuals and the fact that these discrepancies can be readily incorporated into the subsequent pulsar parameters,leading to inconsistent fitting estimates,suggest that the influence of errors in the ephemeris on the timing process might currently be underappreciated.

关键词： (stars)pulsars general-Planetary Systems-time-ephemerides

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中国地理学的行为革命及其理论内涵

地理研究 2024年第9期43卷 2259-2270页

作者：柴彦威塔娜北京大学城市与环境学院北京100871 华东师范大学地理信息科学教育部重点实验室上海200241 华东师范大学地理科学学院上海200241 自然资源部超大城市自然资源时空大数据分析应用重点实验室上海200241

流动性社会与高质量发展对中国地理学的理论创新提出了新的要求。在积极响应中国式现代化转型中的规划与治理需求过程中,中国地理学迫切需要对中国城乡社会的微观过程与行为机理进行刻画与解释,构建具有中国特色、指导中国社会建设的行... 详细信息

流动性社会与高质量发展对中国地理学的理论创新提出了新的要求。在积极响应中国式现代化转型中的规划与治理需求过程中,中国地理学迫切需要对中国城乡社会的微观过程与行为机理进行刻画与解释,构建具有中国特色、指导中国社会建设的行为地理学研究范式。本文在借鉴西方地理学从计量革命走向行为革命的范式转型路径的基础上,提出中国地理学行为革命的理论框架,并讨论了行为革命对中国社会经济发展现实需求的意义和对中国地理学学科建设的贡献。行为革命立足于建立基于人的地理学解释框架,关注“时空间中的人”这一主体,构建以时空间行为交互与整合为核心的研究新范式,从个体行为与行为交互两个维度探索行为过程的机理解释,并引入新技术、新方法建立多维整合的混合研究路径,最终建立人地互动的决策支持系统。

关键词：行为地理学行为革命时空间行为中国社会转型中国地理学

Using deep neural networks coupled with principal component analysis for ore production forecasting at open-pit mines

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Journal of Rock Mechanics and Geotechnical engineering 2024年第3期16卷 727-740页

作者： Chengkai Fan na Zhang Bei Jiang Wei Victor Liu Department of Civil and environmental engineering University of AlbertaEdmontonAlbertaT6G 2E3Canada Department of Mathematical and Statistical Sciences University of AlbertaEdmontonAlbertaT6G 2G1Canada

Ore production is usually affected by multiple influencing inputs at open-pit ***,the complex nonlinear relationships between these inputs and ore production remain *** becomes even more challenging when training data(*** haulage information and weather conditions)are *** machine learning(ML)algorithms,deep neural network(DNN)is a superior method for processing nonlinear and massive data by adjusting the amount of neurons and hidden *** study adopted DNN to forecast ore production using truck haulage information and weather conditions at open-pit mines as training *** the prediction models were built,principal component analysis(PCA)was employed to reduce the data dimensionality and eliminate the multicollinearity among highly correlated input *** verify the superiority of DNN,three ANNs containing only one hidden layer and six traditional ML models were established as benchmark *** DNN model with multiple hidden layers performed better than the ANN models with a single hidden *** DNN model outperformed the extensively applied benchmark models in predicting ore *** can provide engineers and researchers with an accurate method to forecast ore production,which helps make sound budgetary decisions and mine planning at open-pit mines.

关键词： Oil sands production Open-pit mining Deep learning Principal component analysis(PCA) Artificial neural network Mining engineering

Multi-objective optimization and evaluation of supercritical CO_(2) Brayton cycle for nuclear power generation

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Nuclear Science and Techniques 2024年第2期35卷 183-209页

作者： Guo-Peng Yu Yong-Feng Cheng na Zhang Ping-Jian Ming Sino-French Institute of Nuclear engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China School of Civil engineering and Architecture East China Jiaotong UniversityNanchang 330013China

The supercritical CO_(2) Brayton cycle is considered a promising energy conversion system for Generation IV reactors for its simple layout,compact structure,and high cycle *** models of four Brayton cycle layouts are developed in this study for different reactors to reduce the cost and increase the thermohydraulic performance of nuclear power generation to promote the commercialization of nuclear *** analysis,multi-objective optimizations,and four decision-making methods are applied to obtain each Brayton scheme’s optimal thermohydraulic and economic *** show that for the same design thermal power scale of reactors,the higher the core’s exit temperature,the better the Brayton cycle’s thermo-economic *** the four-cycle layouts,the recompression cycle(RC)has the best overall performance,followed by the simple recuperation cycle(SR)and the intercooling cycle(IC),and the worst is the reheating cycle(RH).However,RH has the lowest total cost of investment(C_(tot))of$1619.85 million,and IC has the lowest levelized cost of energy(LCOe)of 0.012$/(kWh).The nuclear Brayton cycle system’s overall performance has been improved due to *** performance of the molten salt reactor combined with the intercooling cycle(MSR-IC)scheme has the greatest improvement,with the net output power(W_(net)),thermal efficiencyη_(t),and exergy efficiency(η_(e))improved by 8.58%,8.58%,and 11.21%,*** performance of the lead-cooled fast reactor combined with the simple recuperation cycle scheme was optimized to increase C_(tot) by 27.78%.In comparison,the internal rate of return(IRR)increased by only 7.8%,which is not friendly to investors with limited *** the nuclear Brayton cycle,the molten salt reactor combined with the recompression cycle scheme should receive priority,and the gas-cooled fast reactor combined with the reheating cycle scheme should be considered carefully.

关键词： Supercritical CO_(2)Brayton cycle Nuclear power generation Thermo-economic analysis Multi-objective optimization Decision-making methods

Transverse mode-coupling instability with longitudinal impedance

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Nuclear Science and Techniques 2024年第6期35卷 40-53页

作者： Hai-Sheng Xu Chun-tao Lin na Wang Jing-Ye Xu Yuan Zhang Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China Institute of Advanced Science Facilities Shenzhen 518107GuangdongChina

Transverse mode-coupling instability(TMCI)is a dangerous transverse single-bunch instability that can lead to severe par-ticle *** mechanism of TMCI can be explained by the coupling of transverse coherent oscillation modes owing to the transverse short-range wakefield(i.e.,the transverse broadband impedance).Recent studies on future circular colliders,e.g.,FCC-ee,showed that the threshold of TMCI decreased significantly when both longitudinal and transverse impedances were *** performed computations for the circular electron-positron collider(CePC)and observed a similar *** studies on the influence of longitudinal impedance on the TMCI threshold were *** concluded that the imaginary part of the longitudinal impedance,which caused a reduction in the incoherent synchrotron tune,was the primary reason for the reduction in the TMCI ***,the real part of the longitudinal impedance assists in increasing the TMCI threshold.

关键词： Transverse mode-coupling instability Longitudinal impedance

城市空间利用对外来人口城市归属感的影响——以上海为例

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人文地理 2024年第1期39卷 93-100,172页

作者：李若铭塔娜华东师范大学地理科学学院上海200241 华东师范大学地理信息科学教育部重点实验室上海200241 自然资源部超大城市自然资源时空大数据分析应用重点实验室上海200241

基于2017年上海郊区居民活动与出行调查数据,本文分析了外来人口城市空间利用与归属感的总体特征和群体差异,并对不同居留时长外来人口的城市空间利用对城市归属感的影响进行了探讨。结果表明:(1)上海郊区外来人口的城市归属感一般,但... 详细信息

基于2017年上海郊区居民活动与出行调查数据,本文分析了外来人口城市空间利用与归属感的总体特征和群体差异,并对不同居留时长外来人口的城市空间利用对城市归属感的影响进行了探讨。结果表明:(1)上海郊区外来人口的城市归属感一般,但城市归属感随居留时间延长而提升。(2)城市空间利用中,中心城区与社区活动时长对其城市归属感存在显著正向影响。(3)城市空间利用对外来人口城市归属感的影响存在显著的群体差异,中心城区活动有利于新来者和适应者的城市归属感提升,郊区新城活动对新来者和适应者的影响相反,长期居留者归属感与城市空间利用的关系不显著。(4)社区主客观建成环境对提升外来人口城市归属感也具有显著影响。

关键词：居留时长外来人口城市归属感不同城市空间活动时长上海