Results 61 to 70 of about 13,778 (155)
Off‐Task Talk to Manage Relationship Work During Student Group Work in Second Language Classrooms
International Journal of Applied Linguistics, EarlyView.ABSTRACT This paper presents a conversation analytic study on student relationship work in off‐task talk (OTT) during group work in foreign language classrooms. Often seen as disengagement from tasks, OTT's social and relational functions in student classroom group interaction and formation remain underexplored.
Yanyan Li
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2015 对东白山（Dongbaishan，DBS）1 hm2森林样地内胸径≥1 cm的木本植物进行统计，初步分析了样地的区系成分、物种组成、群落结构和α多样性.结果表明：样地内共计木本植物48种，隶属23科36属，总计5 493株，以常绿树种为主，共25种，占总优势度的98.18%，重要值的95.22%，总个体数的96.65% ；群落内有明显的优势种、偶见种和部分稀有种，木荷（Schima superba）和马尾松(Pinus massoniana）占显著优势；偶见种和稀有种分别占总物种数的35.42%和20 ...
WANGYunquan(王云泉) +7 more
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Predictive evolutionary genomics: principles, validation, and practice
New Phytologist, EarlyView.Summary Climate change and habitat loss are driving rapid evolutionary responses in populations world‐wide, which creates an urgent need for evolutionary forecasting in conservation and agriculture. Such forecasting can be categorized into three time scales: trait‐based models that use multivariate quantitative genetic equations to project correlated ...
Daniel Ortiz‐Barrientos +5 more
wiley +1 more source
AI foundation models in plant biology
New Phytologist, EarlyView.Foundation models decode genomes, engineer proteins, phenotype crops, and drive AI agents across plant biology. This figure was created in BioRender (BioRender.com/xcmmkel). Summary Rapid technological progress has enabled plant biologists to accumulate unprecedented volumes of multi‐scale, multi‐modal data, yet this abundance of data has intensified ...
Haopeng Yu
wiley +1 more source
野生动物学报, 1999 生物群落的概念很早以前就出现于生物学的各种论著中.本世纪初,对这一概念的理解有两种截然不同的观点,一是认为群落是物种的松散可重复的集合,能作为一个整体在功能上密切统一,并表现出单独机体（超有机体）的特征;第二种观点认为群落至多是物种在分布上的偶然巧合,缺乏内在的组织结构,群落中的物种各自独立地对环境条件做出反映.持不同观点的两大学派各持己见,展开了论战.争论之初,第一种观点占了上风,并统治了该领域几十年之久.到本世纪四十年代末,许多生态学家对第一种群落观点提出挑战认为群落的分类不应该严格不变 ...
赵鲁安 +3 more
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野生动物学报, 2022 绿孔雀(Pavo muticus)是备受关注的濒危物种。我国南方曾广泛分布的云南亚种(P.m.imperator)目前收缩到中部、南部和西部的局部地区,近年来陆续开展了野外种群调查,但遗传多样性的分析和评估尚未开展。本研究利用从玉溪市新平和峨山交界处采集的野外绿孔雀自然脱落的羽毛,采用11对微卫星标记分析遗传多样性和结构,并与国内主要圈养种群(建群者来自瑞丽地区和其他未确定的地点)进行比较。结果表明:该野生种群的遗传多样性较低,受到近交的影响,遗传多样性进一步丢失的风险较高。遗传结构上 ...
刘思霞 +8 more
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Partisanship, Deservingness, and the Attitudinal Policy Feedback Process for Social Policy
Policy Studies Journal, EarlyView.ABSTRACT In an era of identity‐based partisan polarization, we examine whether social policies can still generate positive attitudinal feedback among beneficiaries. Drawing on nationally representative survey data, we demonstrate that partisanship conditions the policy feedback process through divergent perceptions of group deservingness.
Chris Faricy, Christopher Ellis
wiley +1 more source
基于线粒体Cyt b基因和CR序列的养殖貉（Nyctereutes procyonoides）种群遗传多样性和结构分析
野生动物学报, 2021 貉（Nyctereutes procyonoides）是一种重要的经济动物。经过50年的人工驯养繁育，国内养殖种群不断扩大，但对其遗传多样性和结构了解很少，难以开展有效的遗传管理。本研究分析了东北、华北地区养殖貉种群（N=160）的线粒体细胞色素b（Cyt b）基因和控制区（CR）序列，并与已经发表的同源序列进行比较。结果定义了5个Cyt b基因和6个CR序列单倍型，其中与俄罗斯产乌苏里亚种共享单倍型分别是3个和4个。种群遗传多样性分析表明，养殖貉种群单倍型多样性处于临界点（Hd=050 ...
魏宏达 李波 魏来 刘志平 姜春明 史迎秋 徐艳春
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Policy &Internet, Volume 18, Issue 3, September 2026.ABSTRACT Democratic innovations increasingly take place online, yet little is known about how online citizen participation affects perceived legitimacy compared to in‐person formats. This study presents findings from a preregistered vignette experiment conducted in Spain and Switzerland.
Valeria Vuk
wiley +1 more source
野生动物学报, 1985 鸟类的群栖现象较为普遍,通常由一种或几种亲缘关系较近的种类,长期地或在一定的季节里,汇集成同种或异种混合群体,在一定的区域里栖息、觅食、营巢和繁殖。鹭类是喜群栖的典型鸟类,在一定的季节内,常由一种或多种不同的鹭类,集合为成百上千个体的大群。在同一栖息地内生活。鹭类混合群栖的现象已报道的较多,（寿振黄,1939,李永新等,1963;李小惠等。1973）。常见种类组成有:白鹭（Egretia garzetta）、池鹭（Ardeola bacchus）、牛背鹭(Bubu-
李建国 +3 more
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