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摘要： 蛇年春节,随着电影《哪吒之魔童闹海》的热映,哪吒这一神话人物以新的形象进入大众视野.在自贡高新区华苑街,哪吒"傍身"的彩色电力箱也成为市民和游客的拍照打卡地. 一幅墙绘,能承载多少文化内涵?一条街道,能焕发怎样的生机活力?近日,笔者走进自贡高新区春华路和华苑街,从一面墙、一条街的变迁中,窥见城市更新的生动实践.

关键词： corruption   emotions   European Parliament   feeling rules   policy change   political scandal   Qatargate   transparency  

摘要： While there is an increasing interest in the role of emotions in policy studies, not much is known about how emotions unfold in one of the most emotional situations that can be encountered in politics: political scandals. To investigate how the discursive articulation of emotions shapes the policy responses to political misconduct from a constructivist perspective, this article delves into one of the most shocking corruption scandals hitting the European Union (EU) institutions in decades: the money-for-influence scandal, also popularly known as Qatargate. The article shows which emotions the Members of the European Parliament (MEPs) expressed in the wake of the scandal and how the discursive articulation of these emotions shaped their policy responses regarding transparency and accountability. This article combines the analysis of 28 EP plenary debates with interviews with six MEPs and high-level EU officials.

摘要： 2023年冬,河北某工业区,某国有建材集团打造的全球最大水泥碳捕集装置投入运行,每日封存二氧化碳达300吨.这一总投资5.2亿元的示范工程,标志着传统建材行业正迈向低碳转型的深水区.

关键词： asymptotic property   endogenous spatial weight matrix   heterogeneity   high-dimensional spatial dependence data   quantile regression  

摘要： With the development of big data technology, the dimensionality of spatial data is becoming higher and higher, and the endogeneity and heterogeneity of data often exist simultaneously. In this paper, we propose a quantile regression model of high-dimensional spatial dependent data with endogenous spatial weight matrix so as to analyze high-dimensional spatial dependent data robustly. We then develop a three-step penalized quantile estimation procedure through combining the instrumental variable method, variable selection method with robust statistic method, and establish the consistency and the asymptotic normality of the corresponding estimators. In addition, the oracle theoretical properties of variable selection are derived under some mild conditions. At last, we investigate the effectiveness and robustness of the proposed model and method through simulations and an application to housing prices in 284 prefecture-level cities across the country. © 2025 Chinese Academy of Sciences. All rights reserved.

关键词： comparative study   ecological adaptation   exotic plants   germination requirement   high-temperature tolerance in seeds   intraspecific variation   seed provenance   比较研究   生态适应   外来植物   萌发条件   种子的高温耐性   种内差异   种子产地  

摘要： Chromolaena odorata and Ageratina adenophora are invasive species in Southern Yunnan, China, where they demonstrate mosaic distribution patterns. Chromolaena odorata , a tropical species, grows primarily at low latitudes and/or low altitudes, whereas Ageratina adenophora is a temperate species and occurs at higher latitudes and/or higher altitudes. We hypothesised that the thermal interactions between these plants and their habitats contribute to their distribution patterns. To explore this, we investigated how temperature affects various seed traits and performance, including seed viability, high-temperature tolerance, seed longevity under heat stress, and temperature requirements for germination. Our seed ecology study used seeds of both species collected from three of four provenances: Menglun (ML: low latitude and low altitude in Xishuangbanna), Kongmingshan (KMS: low latitude and high altitude in Xishuangbanna), Pu'er (PE: middle latitude and high altitude), and Kunming (KM: high latitude and high altitude). Laboratory experiments were conducted to investigate changes in seed viability after heating at 40°C for 1–10 days and after heating at temperatures between 30°C and 95°C for 30 min. We also investigated seed germination under constant temperatures ranging from 10°C to 40°C, under daily alternative temperatures with warm periods of up to 21 h at 40°C and under water and NaCl stress up to −1.5 MPa. Our results revealed inter- and intraspecific variations in seed high-temperature tolerance of these two invasive species. Chromolaena odorata seeds exhibited greater tolerance to high temperatures, water, and NaCl stress compared to Ageratina adenophora seeds. Additionally, Chromolaena odorata seeds from low latitudes and/or low altitudes performed better than those from high latitudes and/or high altitudes. Conversely, Ageratina adenophora seeds from high latitudes and/or high altitudes performed better than those from low latitudes and/or altitudes. We conclude