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Data error propagation in stacked bioclimatic envelope models

Integrative Zoology 2024年第2期19卷 262-276页

作者： xueyan li Babak NAIMI Peng GONG Miguel B.ARAÚJO Guangdong Provincial Key Laboratory of Remote Sensing and Geographical Information System Guangdong Open Laboratory of Geospatial Information Technology and ApplicationGuangzhou Institute of GeographyGuangdong Academy of ScienceGuangzhouChina ‘Rui Nabeiro’Biodiversity Chair CHANGE-MED InstituteUniversity ofÉvoraÉvoraPortugal Department of Geography and Department of Earth Sciences University of Hong KongHong KongChina Department of Biogeography and Global Change National Museum of Natural SciencesCSICMadridSpain

Stacking is the process of overlaying inferred species potential distributions for multiple species based on outputs of bioclimatic envelope models(BEMs).The approach can be used to investigate patterns and processes of species *** data limitations on individual species distributions are inevitable,but how do they affect inferences of patterns and processes of species richness?We investigate the influence of different data sources on estimated species richness gradients in *** fitted BEMs using species distributions data for 334 bird species obtained from(1)global range maps,(2)regional checklists,(3)museum records and surveys,and(4)citizen science data using presence-only(Mahalanobis distance),presence-background(MAXENT),and presence–absence(GAM and BRT)*** species predictions were stacked to generate species richness ***,we show that different data sources and BEMs can generate spatially varying gradients of species *** environmental predictors that best explained species distributions also differed between data *** using citizen-based data had the highest accuracy,whereas those using range data had the lowest *** richness patterns estimated by GAM and BRT models were robust to data *** multiple data sets exist for the same region and taxa,we advise that explicit treatments of uncertainty,such as sensitivity analyses of the input data,should be conducted during the process of modeling.

关键词： richness patterns species distribution stacked bioclimatic envelope models uncertainty

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Impact of ozonation on disinfection byproducts formation from phenylalanine during chlorination

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JOURNAL OF ENVIRONMENTAL SCIENCES 2024年第10期144卷 199-211页

作者： Huang, Sinong liu, Hongwei Wei, Kunming Zhang, liang Ma, Xiaoyan li, Qingsong li, xueyan Dietrich, Andrea M. Zhejiang Univ Technol Coll Civil Engn Zhejiang Key Lab Civil Engn Struct & Disaster Prev Hangzhou 310023 Peoples R China Xiamen Univ Technol Water Resources & Environm Inst Xiamen 361005 Peoples R China Suzhou Univ Sci & Technol Sch Environm Sci & Engn Suzhou 215009 Peoples R China Virginia Polytech Inst & State Univ Civil & Environm Engn Blacksburg VA 24061 USA

As a strong oxidizing agent, ozone is used in some water treatment facilities for disinfection, taste and odor control, and removal of organic micropollutants. Phenylalanine (Phe) was used as the target amino acid to comprehensively investigate variability of disinfection byproducts (DBPs) formation during chlorine disinfection and residual chlorine conditions subsequent to ozonation. The results showed that subsequent to ozonation, the typical regulated and unregulated DBPs formation potential (DBPsFP), including trichloromethane (TCM), dichloroacetonitrile (DCAN), chloral hydrate (CH), dichloroacetic acid (DCAA), trichloroacetic acid (TCAA), and trichloroacetamide (TCAcAm) increased substantially, by 2.4, 3.3, 5.6, 1.2, 2.5, and 6.0 times, respectively, compared with only chlorination. Ozonation also significantly increased the DBPs yield under a 2 day simulated residual chlorine condition that mimicked the water distribution system. DBPs formations followed pseudo first order kinetics. The formation rates of DBPs in the first 6 hr were higher for TCM (0.214 hr(-1) ), DCAN (0.244 hr(-1) ), CH (0.105 hr(-1) ), TCAcAm (0.234 hr(-1) ), DCAA (0.375 hr(-1) ) and TCAA (0.190 hr(-1) ) than thereafter. The peak DBPsFP of TCM, DCAN, CH, TCAcAm, DCAA, and TCAA were obtained when that ozonation time was set at 5-15 min. Ozonation times > 30 min increased the mineralization of Phe and decreased the formation of DBPs upon chlorination. Increasing bromine ion (Br-) concentration increased production of bromineDBPs and decreased chlorine-DBPs formation by 59.3%-92.2% . Higher ozone dosages and slight alkaline favored to reduce DBP formation and cytotoxicity. The ozonation conditions should be optimized for all application purposes including DBPs reduction. (c) 2024 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

关键词： Ozone Amino acids Chlorination Disinfection by-products DRINKING-WATER AMINO-ACIDS ORGANIC-MATTER TRIHALOMETHANE FORMATION CELL CYTOTOXICITY PRE-OZONATION HUMIC-ACID PRECURSORS BROMIDE OZONE

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Target-adaptive optical phased array lidar

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Photonics Research 2024年第5期12卷 904-911页

作者： YUNHAO FU BAISONG CHEN WENQIANG YUE MIN TAO HAOYANG ZHAO YINGZHI li XUETONG li HUAN QU xueyan li XIAOLONG HU JUNFENG SONG State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China Peng Cheng Laboratory Shenzhen 518000China

lidar based on the optical phased array(OPA)and frequency-modulated continuous wave(FMCW)technology stands out in automotive applications due to its all-solid-state design,high reliability,and remarkable resistance to ***,while FMCW coherent detection enhances the interference resistance capabilities,it concurrently results in a significant increase in depth computation,becoming a primary constraint for improving point cloud density in such perception *** address this challenge,this study introduces a lidar solution leveraging the flexible scanning characteristics of *** proposed system categorizes target types within the scene based on RGB ***,it performs scans with varying angular resolutions depending on the importance of the *** results demonstrate that,compared to traditional scanning methods,the target-adaptive method based on semantic segmentation reduces the number of points to about one-quarter while maintaining the resolution of the primary target ***,with a similar number of points,the proposed approach increases the point cloud density of the primary target area by about four times.

关键词： optical lidar coherent

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Embodied Meaning in Comprehending Abstract Chinese Counterfactuals

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Chinese Journal of Applied linguistics 2024年第3期47卷 414-432,524页

作者： xueyan li Yahui ZHAO Huili WANG Xue ZHANG School of Foreign Languages Dalian University of Technology School of Foreign Languages Hangzhou City University Hangzhou Collaborative Innovation Institute of Language Services School of Foreign Languages Dalian Polytechnic University

Embodied cognition theories propose that language comprehension triggers a sensorimotor system in the ***,most previous research has paid much attention to concrete and factual sentences,and little emphasis has been put on the research of abstract and counterfactual *** primary challenges for embodied theories lie in elucidating the meanings of abstract and counterfactual *** most prevalent explanation is that abstract and counterfactual sentences are grounded in the activation of a sensorimotor system,in exactly the same way as concrete and factual *** present research employed a dual-task experimental paradigm to investigate whether the embodied meaning is activated in comprehending action-related abstract Chinese counterfactual sentences through the presence or absence of action-sentence compatibility effect(ACE).Participants were instructed to read and listen to the action-related abstract Chinese factual or counterfactual sentences describing an abstract transfer word towards or away from them,and then move their fingers towards or away from them to press the buttons in the same direction as the motion cue of the transfer *** action-sentence compatibility effect was observed in both abstract factual and counterfactual sentences,in line with the embodied cognition theories,which indicated that the embodied meanings were activated in both action-related abstract factuals and counterfactuals.

关键词： action-sentence compatibility effect embodiment abstract counterfactuals language comprehension

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Research on Localized English Education for Transnational Left-behind Children in the Context of English Global Localization: A Case Study of Wenzhou Overseas Chinese Hometown

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教育技术与创新 2024年第1期6卷 36-49页

作者： Yujie Su xueyan li Huili Ma Shuchang Dong Ruoruo lin lijuan Zou Qiaoqiao lin School of Foreign Studies Wenzhou UniversityChina li'ao Overseas Chinese Primary School ZhejiangChina Wenzhou Xianyan No.2 Middle School ZhejiangChina Wenzhou High School ZhejiangChina

With the increasing development of English globalization,the trend of combining English with local cultures has become more *** research focuses on five schools in the Wenzhou overseas Chinese hometown to investigate the current status of English education from the perspectives of teachers,students,and *** aim was to propose bilingual education strategies for the education of transnational left-behind children(TLC).By examining the situation of English education in this specific context,this study sought to address the unique challenges faced by TLC and provide effective educational ***,observations,and document analysis were employed to gather data by means of questionnaire research *** findings of this study settled on the improvement of bilingual education for TLC and insights into enhancing English education in multicultural settings.

关键词： glocalization transnational left-behind children(TLC) bilingual education Wenzhou Overseas Chinese Hometown

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基于EWMA控制图抗差估计的欺骗干扰检测算法

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航空学报 2024年第15期45卷 311-322页

作者：钟伦珑岳文静李雪艳中国民航大学智能信号与图像处理天津市重点实验室天津300300 中国民航大学理学院天津300300

诱导式欺骗干扰会使机载接收机偏离真实位置且不易被检测到,对民航飞行安全造成威胁。传统的新息序列检测算法存在欺骗检测延迟、无法及时检测欺骗结束时间的问题。针对这一问题,提出了基于指数加权移动平均(EWMA)控制图抗差估计的欺骗... 详细信息

诱导式欺骗干扰会使机载接收机偏离真实位置且不易被检测到,对民航飞行安全造成威胁。传统的新息序列检测算法存在欺骗检测延迟、无法及时检测欺骗结束时间的问题。针对这一问题,提出了基于指数加权移动平均(EWMA)控制图抗差估计的欺骗干扰检测算法。该算法将紧组合导航系统输出的新息序列作为EWMA控制图的检测样本,利用历史时刻的统计量和当前时刻的新息加权构造服从高斯分布的检验统计量来检测欺骗干扰,并识别受欺骗卫星。同时,利用抗差估计动态调整卡尔曼滤波的增益矩阵,以减小欺骗干扰对新息序列的影响,并通过改变等价权函数的参数加快算法欺骗检测的速度。仿真结果表明:与传统新息序列检测算法相比,所提算法明显缩短了对微小突变式欺骗干扰和缓变式欺骗干扰的检测时间,且能及时检测到欺骗结束时间。

关键词：组合导航欺骗检测 EWMA控制图新息序列抗差估计

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加快形成与新质生产力相适应的新型生产关系:理论逻辑与现实路径

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政治经济学评论 2024年第4期15卷 84-99页

作者：周文李雪艳复旦大学复旦大学马克思主义研究院

生产力与生产关系的矛盾运动是人类社会历史发展的客观规律,决定了加快发展新质生产力需要形成与之相适应的新型生产关系。由于生产关系自身的相对稳定性,生产关系的调整可能与生产力的发展不同步,从而形成束缚新质生产力发展的堵点卡... 详细信息

生产力与生产关系的矛盾运动是人类社会历史发展的客观规律,决定了加快发展新质生产力需要形成与之相适应的新型生产关系。由于生产关系自身的相对稳定性,生产关系的调整可能与生产力的发展不同步,从而形成束缚新质生产力发展的堵点卡点。为此,应加快构建高水平社会主义市场经济体制,健全关键核心技术攻关新型举国体制;强化金融服务科技创新的体制机制,畅通“科技—产业—金融”的良性循环;推进教育、科技、人才领域的综合改革,畅通教育、科技、人才的良性循环;持续扩大高水平对外开放,以制度型开放为发展新质生产力营造良好国际环境。

关键词：新质生产力新型生产关系高水平社会主义市场经济体制高水平对外开放

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民营经济高质量发展与新质生产力：关联机理与互动路径

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河北经贸大学学报 2024年第2期45卷 1-10页

作者：周文李雪艳复旦大学马克思主义研究院

习近平总书记在创新发展马克思主义生产力理论的基础上提出“新质生产力”这一以科技创新为主导、以关键性颠覆性技术突破为依托的全新生产力概念。新质生产力是对传统生产力的升级与飞跃，旨在推动我国实现高质量发展。改革开放以来，... 详细信息

习近平总书记在创新发展马克思主义生产力理论的基础上提出“新质生产力”这一以科技创新为主导、以关键性颠覆性技术突破为依托的全新生产力概念。新质生产力是对传统生产力的升级与飞跃，旨在推动我国实现高质量发展。改革开放以来，民营经济在我国解放、发展生产力的过程中发挥了重要作用。步入新发展阶段，民营企业将因具备创新发展意识、产业创新优势、企业家精神才能等特殊优势而成为我国培育新质生产力的有生力量。与此同时，民营经济也将在形成新质生产力的过程中实现发展质量变革。为此，要支持民营企业参与关键核心技术攻关，动员民营企业助推新型工业化与产业现代化，引导民营经济布局新兴产业和未来产业，完善支持民营企业培育新质生产力的体制机制，以实现民营经济高质量发展与新质生产力培育的良性互促。

关键词：民营经济新质生产力科技创新关键性核心技术高质量发展

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基于深度强化学习的通勤走廊韧性恢复双层规划

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复杂系统与复杂性科学 2024年第1期21卷 92-99,108页

作者：李雪岩张同宇祝歆北京联合大学管理学院北京100101 北京联合大学城市轨道交通与物流学院北京100101

为实现通勤走廊内机动公交接驳方案的科学设计,将其韧性恢复过程视为复杂环境中接驳方案经过探索迭代实现韧性提升的双层规划。引入深度强化学习算法构建上层规划,采用价值函数神经网络拟合突发事件与出行者集群行为对接驳方案调整的反... 详细信息

为实现通勤走廊内机动公交接驳方案的科学设计,将其韧性恢复过程视为复杂环境中接驳方案经过探索迭代实现韧性提升的双层规划。引入深度强化学习算法构建上层规划,采用价值函数神经网络拟合突发事件与出行者集群行为对接驳方案调整的反应函数,训练接驳方案达到决策目标。下层规划运用元胞神经网络模拟数据智能背景下的集群出行行为。实例研究表明,方法可以使通勤走廊韧性得到有效提升,而集群行为会对韧性恢复产生负面影响。

关键词：通勤走廊韧性接驳方案深度强化学习集群行为

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靶向KRAS蛋白抑制剂的研究进展

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中国药科大学学报 2024年第2期55卷 257-269页

作者：李学燕陈娜江程中国药科大学药学院南京211198

KRAS蛋白是由克里斯汀鼠肉瘤病毒基因(Kirsten rat sarcoma viral oncogene,KRAS)编码的一种小GTP酶,参与细胞的增殖、分化、迁移和凋亡等活动,被认为是调控细胞生命周期的信号开关。然而KRAS基因容易发生突变导致下游信号通路的过度激... 详细信息

KRAS蛋白是由克里斯汀鼠肉瘤病毒基因(Kirsten rat sarcoma viral oncogene,KRAS)编码的一种小GTP酶,参与细胞的增殖、分化、迁移和凋亡等活动,被认为是调控细胞生命周期的信号开关。然而KRAS基因容易发生突变导致下游信号通路的过度激活,是肿瘤疾病发生发展的重要因素。KRAS蛋白常见突变位点包括G12、G13和Q61,不同的突变体对蛋白生理功能的影响和主要肿瘤疾病类型具有差异性。KRAS蛋白由于其光滑的表面和对核苷酸的高亲和力一度被认为是“不可成药”的靶点。直到靶向KRAS G12C共价抑制剂索托雷塞(sotorasib)和阿达格拉西布(adagrasib)的上市才打破了KRAS不可成药的现状。文章就KRAS蛋白的结构和功能以及直接靶向KRAS G12C、KRAS G12D、KRAS G12R、KRAS G12S和泛KRAS抑制剂的研究现状、面临的挑战进行综述,旨在为KRAS抑制剂的发展提供有益参考。

关键词： RAS KRAS KRAS抑制剂抗肿瘤

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