关键词： Green development  

摘要： Trade policy uncertainty has become a significant feature of today\'s globaleconomy. While its impact on free trade is evident, its microeconomic effectsremain open to debate. This study explores the influence of trade policyuncertainty on corporate ESG performance and its underlying mechanisms, usingdata from A-share listed companies in China from 2010 to 2020. The findingsreveal that increased trade policy uncertainty significantly and robustlyenhances corporate ESG performance. Heterogeneity analysis indicates thathigh-tech enterprises are better equipped to improve their ESG performance inresponse to trade policy uncertainty. Furthermore, strengthening internalcontrols and appointing CEOs with environmental backgrounds also help firmsseize the opportunities arising from trade policy uncertainty. In terms ofmechanisms, trade policy uncertainty intensifies industry competition,compelling firms to enhance their ESG performance to gain market ***, it stimulates green technological innovation, further optimizingESG outcomes. Therefore, efforts should focus on improving the ESG standardssystem, establishing ESG incentive policies, increasing the transparency andpredictability of trade policies, and promoting corporate green development toadvance national sustainable development goals. © 2025, CC BY.

关键词： 新质生产力   适应能力   制造业   企业竞争力   科技创新   产业转型升级   经济政策不确定性   中国式现代化  

摘要： 2023年中央经济工作会议提出要以科技创新推动产业创新，特别是以颠覆性技术和前沿技术催生新产业、新模式、新动能，发展新质生产力。基于此，本文以2011—2023年地级及以上城市为样本，构建新质生产力指标测度体系，并探寻区域新质生产力对微观制造企业的竞争力提升效应。研究发现：新质生产力对制造业企业竞争力提升起到了正向促进作用，调节机制分析表明动态适应能力能够强化新质生产力对制造业企业竞争力的正向赋能效应，尤其是当企业感知到较强的经济政策不确定性的情况下，这种强化效应会更加明显。异质性分析发现，在东部地区的非国有企业、金融化水平较低的成熟期和衰退期企业，新质生产力对企业竞争力的促进作用更加显著。进一步分析发现：新质生产力能够通过生产侧和消费侧促进企业竞争力的提升，且法治水平能够与新质生产力形成同向协同效应，为企业竞争力深度赋能。本研究为认识区域新质生产力如何赋能微观经济主体提供一定的借鉴和参考。

关键词： St. Martin's Island   Geochemistry   Provenance   Paleo-weathering   Tectonic setting  

摘要： The sedimentary geochemistry of St. Martin's Island is important to determine the origin of the source rock, paleo weathering, tectonic setting, sediment recycling, maturity, sorting, redox condition, and paleo salinity of the sediments. Major oxides, trace elements, and rare earth elements (REEs) obtained from the INAA technique are presented by analyzing the sediment samples collected from the shoreline of St. Martin's Island, Bangladesh. The elemental ratios, comparison with average upper continental crust (UCC), binary diagrams (Th/Sc vs. Sc, La/Th vs. Hf, Th/Co vs. La/Sc), and chondrite normalized REE patterns exhibit substantial LREE enrichment, relatively flat HREE fractionation, considerable negative Eu anomalies (average: 0.72), indicates the derivation from a source dominated by felsic rock, with contribution from intermediate source and mafic component. Sediments from St. Martin's Island exhibit the deposition of sediments in transitional environments of active and passive continental margin settings. Weathering indices value of CIA, PIA, CIW, CIX, and K2O/Rb ratio show moderate chemical weathering, indicating that the sediments are chemically mature. Sedimentary redox indicative proxies, such as U/Th, V/Cr, and V/Sc, show an oxic depositional environment during sediment deposition. The intermediate CIA and other weathering index values of the St. Martin's sediments show that the area had semiarid and humid climatic conditions throughout the deposition. The Rb/K ratio of the St. Martin's sediments suggests that the development and deposition of the sedimentary sequence of St. Martin's Island mainly occurred in a brackish water environment during the geological past.

关键词： Prediction models  

摘要： Accurate and timely air quality prediction is important for supporting daily activities and safeguarding respiratory health. However, the complex aerodynamic properties of air pollutants pose significant challenges to accurate air quality prediction. Most existing spatiotemporal prediction models extract spatial features in a coarse-grained manner, which cannot fully utilize the spatial feature data, resulting in poor prediction accuracy. To this end, we propose a novel air quality prediction method based on a Spatiotemporal Transformer with a Kolmogorov-Arnold Network (ST-KAN-Former). Specifically, in the temporal dimension, we use the wavelet transform, KAN, and ProbAttention network to construct the temporal feature extraction model. Based on this, the temporal dimension data are decomposed into high-frequency and low-frequency components, and then feature extraction is performed for fine-grained acquisition of temporal dimension features. Then, in the spatial dimension, we divide the spatial region into four subregions according to the distance parameter between the master site and the slave site and build a spatial feature extraction model for each subregion using KAN and ProbAttention networks. Next, we simulate the attenuation of pollutants during their dispersion to introduce the concept of diffusion coefficients. This approach allows us to apply diffusion processing to data from each subregion, enabling a finer granularity in capturing spatial characteristics. Finally, we employ the KAN and ProbAttention networks to construct a spatiotemporal feature fusion model that integrates temporal and spatial characteristics. Extensive experiments on the Beijing dataset demonstrate that ST-KAN-Former achieves better results compared with the other 11 benchmarks. © 2025, The Authors. All rights reserved.

摘要： 2024年IPO发行数量和融资规模明显下滑,分别相比2023年减少了 68.05％和81.1％. 全年共有386家辅导备案企业获受理 据Wind数据统计,2024年全年,辅导备案登记受理企业共计386家,相比2023年的593家受理企业减少了34.91％,相比2022年334家受理企业增长了 15.57％. 在2024年受理的386家辅导备案登记企业中,按区域统计,江苏上榜企业最多,共有72家,排在其后的是浙江省、深圳市、广东省(不含深圳)和上海市,分别有46家、34家、33家、25家.按照保荐机构口径统计,国泰君安保荐的企业数量最多,为36家;中信证券保荐数量排名第二,为34家;海通证券排名第三,为25家;中信建投以24家(含1家联合保荐)排名第四;中金公司和民生证券则分别以22家的保荐数量并列第五.

关键词： ESG表现   开放式绿色创新   区域数字经济发展   企业数字化转型  

摘要： 在数字化变革的背景下，企业的环境、社会和治理（ESG）表现对开放式绿色创新至关重要。基于2011—2022年A股上市公司数据，探讨了数字化变革背景下企业ESG表现对开放式绿色创新的作用机理。研究发现，良好的ESG表现对企业开放式绿色创新具有正向促进作用，经过一系列稳健性检验后结论依然成立；并且在区域数字经济发展水平较高和企业数字化程度较高的情况下，这一关系显著增强。异质性分析表明，在高新技术企业、信任水平较高地区企业，以及融资约束较强的企业中，这一效果更加突出。研究结果揭示了企业内外部数字化变革在ESG价值传导中扮演的角色，丰富了ESG价值生态理论，并为企业依托区域数字经济环境和数字化转型契机，践行ESG理念、推动高质量可持续发展提供了理论支撑与实证检验。

关键词： Escherichia coli   extended-spectrum beta-lactamase   plasmid   sewage  

摘要： We announce the complete genome of Escherichia coli strain PEC1003 belonging to ST7366, isolated from sewage water in Pakistan. This strain harbored a plasmid carrying various antibiotic resistance genes, including extended-spectrum beta-lactamase (ESBL), bla(CTX-M-15) , emphasizing the management and surveillance of ESBL-producing E. coli in the environment of developing countries.