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Nano-Micro Letters 2025年第2期17卷 169-186页

作者： Bitgaram Kim Myeong‑Chang Sung Gwang‑Hee Lee Byoungjoon Hwang Sojung Seo ji‑Hun Seo Dong‑Wan Kim Department of materials Science and Engineering Korea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea School of Civil Environmental and Architectural EngineeringKorea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea materials Science and Chemical Engineering Center Institute for Advanced Engineering(IAE)Yongin 17180Republic of Korea

A critical challenge hindering the practical application of lithium–oxygen batteries(LOBs)is the inevitable problems associated with liquid electrolytes,such as evaporation and safety *** study addresses these problems by proposing a modified polyrotaxane(mPR)-based solid polymer electrolyte(SPE)design that simultaneously mitigates solvent-related problems and improves ***-SPE exhibits high ion conductivity(2.8×10^(−3)S cm^(−1)at 25℃)through aligned ion conduction pathways and provides electrode protection ability through hydrophobic chain *** this mPR-SPE into solid-state LOBs resulted in stable potentials over 300 *** situ Raman spectroscopy reveals the presence of an LiO_(2)intermediate alongside Li_(2)O_(2)during oxygen *** situ X-ray diffraction confirm the ability of the SPE to hinder the permeation of oxygen and moisture,as demonstrated by the air permeability *** present study suggests that maintaining a low residual solvent while achieving high ionic conductivity is crucial for restricting the sub-reactions of solid-state LOBs.

关键词： Solid polymer electrolyte Lithium-oxygen batteries Polyrotaxane ion conductivity Hydrophobic chain

Extended scintillation phase gradient autofocus in future spaceborne P-band SAR mission

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Science China(Information Sciences) 2021年第11期64卷 216-232页

作者： Yifei ji zhen DONG Yongsheng ZHANG Qilei ZHANG Baidong YAO College of Electronic Science and Technology National University of Defense Technology East China Research Institute of Electronic Engineering

A future spaceborne P-band synthetic aperture radar(SAR) working system will be inevitably influenced by ionospheric scintillation, which tends to cause azimuth decorrelation and azimuth-imaging degradation. The scintillation phase error(SPE) history spatially varies by 2 D scenes, and this leads to the complexity of SPE estimation and compensation. In this paper, to address this problem, an approach based on the extended scintillation phase gradient autofocus(ESPGA) technique has been proposed. ESPGA is composed of three modules: local estimation, overall estimation, and correction. First, it employs the block PGA(BPGA) to estimate SPE associated with the local block. Second, by taking advantage of information redundancy of SPE estimates, azimuth splicing and range interpolation are applied to estimate the overall SPE distribution across the whole scene. Then, the estimation result corresponding to the overall SPE is considered to compensate the spatial-variant SPE and mitigate scintillation impacts on the spaceborne SAR images. Finally, a processing experiment based on a simulated image derived from an airborne P-band SAR real scene is conducted to demonstrate the effectiveness of the proposed methodology.

关键词： synthetic aperture radar (SAR) ionospheric scintillation scintillation phase error (SPE) extended scintillation phase gradient autofocus (ESPGA) spaceborne P-band SAR

A Separation Theorem for Stochastic Singular Linear Quadratic Control Problem with Partial Information

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Acta mathematicae Applicatae Sinica 2013年第2期29卷 303-314页

作者： Hong-ji ma Ting HOU College of Science Shandong University of Science and Technology Department of Systems and Control Beijing University of Aeronautics and Astronautics

In this paper, we provide a separation theorem for the singular linear quadratic （LQ） control problem of ItS-type linear systems in the case of the state being partially observable. Above all, the Kalmam Bucy filtering of the dynamics is given by means of Girsanov transformation, by which the suboptimal feedback control of the LQ problem is determined. Furthermore, it is shown that the well-posedness of the LQ problem is equivalent to the solvability of a generalized differential Riccati equation （GDRE）.

关键词： singular optimal control Kalman-Bucy filtering separation theorem linear systems generalizeddifferential Riccati equation

A long term calibration and verification of a submerged aquatic vegetation model for Lake Okeechobee

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Ecological Processes 2013年第1期2卷 232-244页

作者： Kang-Ren jin zhen-Gang ji South Florida Water management District P.O.Box 24680West Palm BeachFL 334164680USA Department of Civil Engineering Catholic University of AmericaPangborn HallRoom G12WashingtonDC 20064USA

Introduction:Submerged aquatic vegetation(SAV)has multiple functions in Lake *** provides critical habitat for fish and wildlife,stabilizes sediments,reduces phosphorus(P)concentration in the water column by preventing re-suspension of P-rich sediments,and provides a substrate for attached algae,which also helps to remove P from the water *** year water quality and SAV growth simulations are presented and compared with observed SAV and water quality data collected in the nearshore zone in Lake ***:The SAV theory and approach used in the LOEM are modified from the Chesapeake Bay model and incorporate three state variables:shoots(above the bed sediment),roots(in the bed sediment),and epiphytes(attached to the shoots).The SAV model has direct linkages with the water quality model,including(1)a link between the growth and decay of SAV and the nutrient pool of the water quality model;(2)a link between the photosynthesis and respiration of SAV and dissolved oxygen dynamics,and(3)the ways in which settling of particulate organic matter and nutrient uptake affect nutrient levels in the water column and in the sediment ***:Total suspended solids affect light attenuation and are another major driving factor for SAV growth in the nearshore and littoral zone *** model performs reasonably well in reproducing the spatial distribution of ***:The theoretical analysis and model sensitivity tests indicate that SAV growth is primarily controlled by light and *** light available for SAV growth depends on the water depth and the *** this full scale simulation,the water depth comes from the LOEM hydrodynamic model,and the turbidity depends on the suspended sediment concentration and algal concentration.

关键词： Submerged aquatic vegetation(SAV) SAV modeling Lake Okeechobee Long term simulation

Responses of Mean and Extreme Precipitation to Different Climate Forcing Under Radiative-Convective Equilibrium

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Advances in Atmospheric Sciences 2020年第4期37卷 377-386,I0007-I0010页

作者： Chenyu ma Wei YUAN ji NIE Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871China Aviation Meteorological Center Civil Aviation Administration of ChinaBeijing 100122China

Understanding the responses of mean and extreme precipitation to climate change is of great *** studies have mainly focused on the responses to prescribed sea surface warming or warming due to increases of *** study uses a cloud-resolving model under the idealization of radiative-convective equilibrium to examine the responses of mean and extreme precipitation to a variety of climate forcings,including changes in prescribed sea surface temperature,CO2,solar insolation,surface albedo,stratospheric volcanic aerosols,and several tropospheric *** different responses of mean precipitation are understood by examining the changes in the surface energy *** is found that the cancellation between shortwave scattering and longwave radiation leads to a small dependence of the mean precipitation response on *** responses of extreme precipitation are decomposed into three components(thermodynamic,dynamic,and precipitation efficiency).The thermodynamic components for all climate forcings are *** dynamic components and the precipitation-efficiency components,which have large spreads among the cases,are negatively correlated,leading to a small dependence of the extreme precipitation response on the forcings.

关键词： climate forcing mean precipitation extreme precipitation

Efficiency of Profinite Rigidity of Triangle Groups

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Acta mathematica Sinica,English Series 2022年第10期38卷 1939-1948页

作者： ji Ming ma Zi Xi WANG School of mathematical Sciences Fudan UniversityShanghai 200433P.R.China

It is already known that finitely-generated Fuchsian groups are profinitely rigid among all lattices of connected Lie groups by the result of Bridson,Conder and *** the triangle groups are distinguished among themselves by their finite *** focus on the question about quantifying the size of a quotient which separates two triangle groups and give an explicit upper bound.

关键词： Triangle groups profinite completion finite quotients

ACLSTM:A Novel Method for CQA Answer Quality Prediction Based on Question-Answer Joint Learning

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Computers, materials & Continua 2021年第1期66卷 179-193页

作者： Weifeng ma jiao Lou Caoting ji Laibin ma School of Information and Electronic Engineering Zhejiang University of Science and TechnologyHangzhou310023China

Given the limitations of the community question answering(CQA)answer quality prediction method in measuring the semantic information of the answer text,this paper proposes an answer quality prediction model based on the question-answer joint learning(ACLSTM).The attention mechanism is used to obtain the dependency relationship between the Question-and-Answer(Q&A)*** Neural Network(CNN)and Long Short-term Memory Network(LSTM)are used to extract semantic features of Q&A pairs and calculate their matching ***,answer semantic representation is combined with other effective extended features as the input representation of the fully connected *** with other quality prediction models,the ACLSTM model can effectively improve the prediction effect of answer *** particular,the mediumquality answer prediction,and its prediction effect is improved after adding effective extended *** prove that after the ACLSTM model learning,the Q&A pairs can better measure the semantic match between each other,fully reflecting the model’s superior performance in the semantic information processing of the answer text.

关键词： Answer quality semantic matching attention mechanism community question answering

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法治是中国式现代化的重要保障

新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 7-16,F0002页

作者：莫纪宏中国社会科学院法学研究所北京100720

党的二十届三中全会审议通过的《中共中央关于进一步全面深化改革、推进中国式现代化的决定》明确提出“法治是中国式现代化的重要保障”,对法治与现代化之间的辩证关系从理论与实践相结合的角度作出系统阐述,对不断完善和健全法治在保... 详细信息

党的二十届三中全会审议通过的《中共中央关于进一步全面深化改革、推进中国式现代化的决定》明确提出“法治是中国式现代化的重要保障”,对法治与现代化之间的辩证关系从理论与实践相结合的角度作出系统阐述,对不断完善和健全法治在保障中国式现代化中的能力,推动法治与现代化同频共振、并肩前行发挥了政策引领作用。从法理层面准确认识法治对中国式现代化的保障机制和制度功能,要从历史维度、政治维度、理论维度、比较维度和实践维度“五个维度”有机统一的角度认识中国式现代化的具体特征和制度形态,针对不同层面的中国式现代化目标采取不同性质的法治应对和保障措施。法治在中国式现代化进程中,通过保障制度现代化推进中国式现代化。其中,法治自身也需要现代化。没有法治现代化就没有社会主义现代化。法治在推进中国式现代化过程中,通过不断提升自身效能和保障能力,逐步实现自身的现代化,成为中国式现代化事业的重要组成部分。

关键词：法治中国式现代化历史维度政治维度理论维度比较维度实践维度

5G Flexible Optical Transport Networks with Large-Capacity, Low-Latency and High-Efficiency

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China Communications 2019年第5期16卷 19-32页

作者： Yuefeng ji jiawei Zhang Yuming Xiao zhen Liu State Key Lab of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications

The fifth generation(5G) of mobile communications are facing big challenges, due to the proliferation of diversified terminals and unprecedented services such as internet of things(IoT), high-definition videos, virtual/augmented reality(VR/AR). To accommodate massive connections and astonish mobile traffic, an efficient 5G transport network is required. Optical transport network has been demonstrated to play an important role for carrying 5G radio signals. This paper focuses on the future challenges, recent studies and potential solutions for the 5G flexible optical transport networks with the performances on large-capacity, low-latency and high-efficiency. In addition, we discuss the technology development trends of the 5G transport networks in terms of the optical device, optical transport system, optical switching, and optical networking. Finally, we conclude the paper with the improvement of network intelligence enabled by these technologies to deterministic content delivery over 5G optical transport networks.

关键词： 5G optical transport networks optical devices optical transport system optical switching optical networking

Evaluation of oasis ecosystem risk by reliability theory in an arid area: A case study in the Shiyang River Basin, China

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Journal of Environmental Sciences 2007年第4期19卷 508-512页

作者： LI Wei-de LI Zi-zhen WANG ji-quan Institute of Bioinformatics School of Mathematics and Statistics Lanzhou University Lanzhou 730000 China. Key Laboratory of Arid and Pastoral Agroecology of the Ministry of Education Lanzhou University Lanzhou 730000 China Institite of Cold and Arid Regions Environment and Engineering Chinese Academy of Sciences Lanzhou 730000 China

Ecosystem risk is a new concept in understanding environmental problems. It is important to study and develop quantitative methods for regional ecosystem risk analysis. In this study, some new indicators and methods for measuring oasis ecosystem risk were established using reliability theory. These indicators are linked to water resource, which is the key restricting factor in arid area oasis ecosystems. They have clear meanings and can also be compared in different arid area oases. A case study in the Liangzhou oasis of the Shiyang River Basin in China shows how to calculate these ecosystem risk indicators. The results of the case study are as follows： the reliability indicator, risk indicator, stability indicator, and integrated loss indicator of the Liangzhou oasis are 0.686, 0.314, 0.743, and 0.301, respectively. This means that the reliability degree of the oasis＇s ecosystem safety is 68.6%; the degree of risk that it is unsafe is 31.4%; the stability degree is 74.3%; and 30.1% of the oasis＇s area is supported by over-exploiting underground water and damaging the lower reaches of the ecosystem. This result can be used as a guide in controlling and managing ecosystem risk in the research area.

关键词： ecosystem risk sustainable development Shiyang River Basin risk analysis