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Can Multiple Livelihood Interventions Improve Livelihood Resilience of Out-of-poverty Farmers in Mountain Areas?A Case Study of Longnan Mountain Area,China

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Chinese Geographical Science 2023年第5期33卷 898-916页

作者： WANG Rong zhao xueyan College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China

Clarifying the impact of livelihood interventions on the livelihood resilience of farmers in undeveloped mountain areas can not only optimize interventions,but also provide experiential support for global poverty *** analyze the impact of multiple livelihood interventions on livelihood resilience,we constructed an analytical framework and analyzed the enjoyment of livelihood interventions and the heterogeneity of livelihood resilience among out-of-poverty farmers in the Longnan mountain areas,***,we studied the impact of intervention intensity on livelihood resilience through the multiple linear regression *** results revealed that:1)the livelihood interventions enjoyed by out-of-poverty farmer in mountain areas were *** proportion of farmers enjoyed diversified livelihood interventions was in descending order of high mountain areas,semi-mountain area and Chuanba valley areas.2)The overall livelihood resilience of farmers in Longnan mountain areas was generally low,with an average of *** were significant differences in the livelihood resilience of farmers across different geographic areas in the study area and types of interventions.3)The effects of industry interventions,employment interventions and education interventions were *** endogenous power of farmers not only had a significant positive effect on livelihood resilience,but also positively moderated the impact of the intensity of interventions on livelihood *** addition,the household dependency ratio and the average altitude of the village area had a significant negative impact on their livelihood resilience.

关键词： livelihood resilience livelihood interventions farmer Longnan mountain area,China

Exponential stability of stochastic Markovian jump systems with time-varying and distributed delays

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Science China(Information Sciences) 2021年第10期64卷 251-253页

作者： xueyan zhao Feiqi DENG Wenhua GAO School of Automation Science and Engineering South China University of Technology School of Mathematics South China University of Technology

Dear editor,In the field of applied mathematics and control theory,the research on stochastic Markovian jump systems has attracted increasing attention in recent years. A few studies have been conducted on stochastic Markovian jump systems [1–6]. Most previously conducted studies on stochastic Markovian jump systems investigate the discrete timevarying delay [4–6], whereas the distributed delay has not been given much attention owing to the difficulties involved in applying mathematical analysis.

关键词： stochastic Markovian jump systems Exponential stability distributed delays time-varying delays Lyapunov function

Input-to-state stability analysis of stochastic delayed switching systems

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Science China(Information Sciences) 2023年第11期66卷 204-221页

作者： Peilin YU Feiqi DENG xueyan zhao Yuanyuan SUN School of Automation Science and Engineering South China University of Technology

In this paper, the issues regarding the input-to-state stability(ISS) and integral input-to-state stability(iISS) of the stochastic delayed switching systems with Lévy noise and input control(SDSS-LN-IC)are proposed by employing the comparison theorem approach, mode-dependent average dwell time(MDADT)method, delay integral inequality(DII), and Lyapunov-Razumikhin(L-R) technique. Two switching situations, namely, synchronous switching and asynchronous switching, are considered. Applying integral inequalities, sufficient stability conditions in both cases are given. Moreover, the sequences of this paper allow for the coefficients for the upper-bound expectation estimation of the infinitesimal operator to be mode-dependent,regardless of the sign and time-varying function rather than a constant, as is the case in certain existing results, which manifests the condition of the Lyapunov-Razumikhin technique in this paper is looser and less conservative. Finally, the validity and correctness of the theoretical results are verified by two examples and some simulations.

关键词： input-to-state stability synchronous switching asynchronous switching Lyapunov-Razumikhin technique mode-dependent average dwell time comparison theorem approach

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Stochastic stabilization using aperiodically sampled measurements

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Science China(Information Sciences) 2019年第9期62卷 91-101页

作者： Shixian LUO Feiqi DENG xueyan zhao Zhipei HU School of Automation Science and Engineering South China University of Technology

This paper addresses the stabilization problem of sector-bounded nonlinear systems with sampled measurements via discrete-time stochastic feedback control. Unlike the previous studies, the closed-loop system is modeled as an impulsive stochastic differential equation. By developing a quasi-periodic polynomial Lyapunov function and sampling-time-dependent Lyapunov function based methods, two sufficient conditions for almost sure exponential stability are derived in terms of differential matrix inequalities(DMIs) and linear matrix inequalities(LMIs). It is shown that the DMI-based conditions can be formulated as a sum of squares(SOSs). Moreover, the obtained results are adapted to sampled-data stochastic/deterministic systems. The numerical examples illustrate the theoretical results.

关键词： stochastic stabilization almost sure stability sampled measurement discrete-time feedback control

A new perspective on fuzzy control of the stochastic T-S fuzzy systems with sampled-data

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Science China(Information Sciences) 2019年第10期62卷 203-205页

作者： Shuqi LI Feiqi DENG xueyan zhao Systems Engineering Institute South China University of Technology

Dear editor,In the past several decades, stability analysis and synthesis of It? stochastic systems have gradually become the important areas of focus owing to their applications in many real-world systems, such as nuclear, thermal, chemical process, biological, socioeconomic, and immunological systems [1–5]. In addition, nonlinearities exist in real plants, which always have more complex analyses than general linear systems. Moreover, the Takagi-Sugeno(TS) fuzzy systems, which are described by a set

关键词： A new perspective on fuzzy control of the stochastic T-S fuzzy systems with sampled-data

Activating weak electrophiles to break nonpolar C-C bonds with electric fields

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Chinese Chemical Letters 2023年第11期34卷 1-2页

作者： xueyan zhao Adila Adijiang Dong Xiang Institute of Modern Optics and Center of Single-Molecule Science Tianjin Key Laboratory of Micro-scale Optical Information Science and TechnologyNankai UniversityTianjin 300350China School of Materials Science and Engineering Smart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300350China

Electrophilic aromatic substitution(EAS)is a vital chemical reaction in organic chemistry that involves replacing substituent on an aromatic ring by an *** its widespread industrial applications in the production of substituted aromatic compounds,the reaction typically requires harsh reaction conditions,such as high temperature and potent Lewis acid catalysts,to activate the electrophile due to the stability of the aromatic ring[1].Recently,a study published by Yaping Zang and colleagues in Nature Communications demonstrates the use of an electric field as a catalyst to regulate EAS reactivity,replacing conventional chemical *** research team discovered that an electric field could activate an otherwise unreactive electrophile and break inert nonpolar C-C bonds under mild *** unprecedented results showcase the potential for broadening the scope of EAS reactions via electric field catalysis.

关键词： bonds aromatic polar

Hybrid stochastic control strategy by two-layer networks for dissipating urban traffic congestion

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Science China(Information Sciences) 2024年第4期67卷 40-41页

作者： Xiaojing ZHONG Bin PANG Feiqi DENG xueyan zhao School of Mechanical and Electrical Engineering Guangzhou University School of Automation Science and Engineering South China University of Technology

With the rapid development of mobile devices and geographic information systems, social network data have become part of the traffic condition dissemination system,thereby influencing traffic conditions. Current research has indicated that the dissemination of traffic congestion information can partially alleviate congestion problems and thus enhance road transportation efficiency [1].

关键词： Traffic congestion

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Chemical characteristics of road dust PM2.5 fraction in oasis cities at the margin of Tarim Basin

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Journal of Environmental Sciences 2020年第9期32卷 217-224页

作者： Hao Yu xueyan zhao Jing Wang Baohui Yin Chunmei Geng Xinhua Wang Chao Gu Lihua Huang Wen Yang Zhipeng Bai College of Water Sciences Beijing Normal UniversityBeijing 100875China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China The Xinjiang Uygur Autonomous Region environmental monitoring station Xinjiang 830011China College of Resources and Environment Linyi UniversityShandong 276000China

In order to understand the compositions characteristics of particulate matter with aerodynamic diameter less than 2.5μm(PM2.5)fraction in road dust(RD2.5)of oasis cities on the edge of Tarim Basin,30 road dust(RD)samples were collected in Kashi,Cele,and Yutian in the spring,2018,and RD2.5 was collected using the resuspension *** watersoluble ions,39 trace elements and 8 fractions of carbon-containing species in PM2.5 were ***2+and Ca were the most abundant ions and elements in RD2.5(7.1%and 9.5%).Cl-in RD2.5 was affected not only by attributed to saline-alkali soils in oasis cities of the Tarim Basin and dust from Taklimakan Desert but also by human ***,the organic carbon/elemental carbon(OC/EC)ratio indicated that carbon components in RD2.5in Cele town mainly come from fossil fuel combustion,while those in Yutian and Kashi mainly come from biomass *** is noteworthy that high Ca in RD2.5 was seriously affected by anthropogenic emissions,and high Na and K contents in RD2.5 could be derived from soil and desert *** was estimated that Cd,Tl,Sn and Cr were emitted from anthropogenic emissions using the enrichment *** coefficients of divergence(cOD)result indicated that the influence of local emission on road dust emission is greater than that of long-distance *** study is the first time to comprehensively analyze the chemical characteristics of road dust in oasis cities,and the results provides the sources of road dust at the margin of Tarim Basin.

关键词： dust characteristics Tarim

Effects of PEAR1 gene polymorphism on big endothelin-1 levels in Chinese patients with acute myocardial infarction after percutaneous coronary intervention

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World Journal of Emergency Medicine 2024年第3期15卷 229-231页

作者： Yi Yao Na Xu Xiaofang Tang Ce Zhang Sida Jia Jingjing Xu Ying Song xueyan zhao Runlin Gao Jinqing Yuan Center for Coronary Heart Disease National Center for Cardiovascular DiseasesState Key Laboratory of Cardiovascular DiseaseFuwai HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China

Acute myocardial infarction (AMI) has been associated with poor prognosis,even after revascularization with percutaneous coronary intervention (PCI),likely due to coronary endothelial cell dysfunction and injury.^([1,2])Endothelin-1 (ET-1),a peptide that serves as a vasoconstrictor of smooth muscle cell proliferation,can reflect endothelial cell functional *** to low circulation levels and short plasma half-life time,measuring plasma ET-1 levels is *** contrast,big ET-1.

关键词： coronary percutaneous endothelin