Results 131 to 140 of about 113,142 (258)
Evolution of research on global amphibian declines
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract In the late 1980s, the scientific community became aware of severe, enigmatic amphibian population declines. These declines triggered a wave of research focused on quantifying their extent and identifying key drivers. We used text‐analysis techniques, including topic modeling and geoparsing, to examine the evolution of research focused on ...
Jordann Crawford‐Ash +6 more
wiley +1 more source
野生动物学报, 1979 在野生动物资源调查工作中,选择一定面积的样地,进行动物数量的统计,是野生动物相对数量统计工作中最基本的方法之一。而样地内动物数量统计的正确与否,不仅关系到样地内动物数量的真实性,而且也将直接影响整个调查地区的调查精度 ...
冯海潼, 姜荣华
doaj
[Associations between early onset of puberty and obesity types in children: Based on both the cross-sectional study and cohort study]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2022 Ma T +11 more
europepmc +1 more source
An Investigation and Study of Chinese Language Teaching in Secondary Schools in the UK——Take Two Schools as An Example [PDF]
, 2016 随着汉语在世界范围内的推广，国别化的汉语教学研究显得日益重要。英国近年来随着外语政策的整体转变以及汉语在英国外语教育中的地位大幅提升，其汉语教育得到了较大发展，目前其孔子学院和孔子课堂的数量居于欧洲第一，并成为了61个把汉语纳入国民教育体系的国家中的一员，学习汉语的人数逐年攀升，选择汉语作为中高考科目的考生也有大幅度增加。而要推动英国的汉语教育进一步发展，既需要结合其外语、汉语教育政策，对其汉语教学状况、本土汉语考试体系等进行系统梳理，也需要通过具体案例，对汉语教与学的相关问题展开深入分析。以此为思路 ...
李翠
core
Survival, rarity, and extinction in tropical stony corals
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Many reef‐building tropical corals are becoming rare. We considered the meaning of rarity in corals and highlighted taxa that have reached low abundances in the last few decades. The difficulties of quantifying rarity in the marine environment arise from the sheer scale and 3‐dimensional nature of the biome and the inherent challenges therein ...
Bryan Wilson, Peter J. Edmunds
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2007 目的通过调查研究建立正常老年人血常规的参考值范围。方法应用百分位数法统计长春市区、双阳区、农村地区60岁以上老年人的血常规参考值范围,被调查者空腹经肘静脉采血,以COULTER血细胞分析仪测定,数据统计应用SPSS 10.0软件。结果本调查的血常规指标呈非正态分布,老年人参考值与临床常用的参考值有显著性差别 ...
吕晓平, 荣墨克, 张静春, 林伟
doaj
Design and Implementation of Train Ticket Reservation Business Management System Based on Postal Intranet [PDF]
, 2015 中国邮政开办有速递物流、邮政金融和电子商务等业务，有着得天独厚的网络优势，发展电子商务业务是邮政企业的优势所在。近年来，各级邮政公司积极与铁路部门合作，相继开通了火车票代售业务。由于代售点名额有限，目前只在市区和部分县城开通了代售点，广大农村地区客户的购票需求无法得到满足，因此提出了依托邮政遍布城乡的网点资源开办火车票预订业务这个项目。由于火车票预订业务涉及到订单信息的生成、传递、处理、反馈，实物寄递、资金归集等多个环节，亟需开发一个相关的管理信息系统来支撑。 本文结合邮政企业实际，运用软件工程方法 ...
王付平
core
Politics &Policy, Volume 54, Issue 1, February 2026.ABSTRACT Academic freedom is widely regarded as a cornerstone of democratic society, yet its public legitimacy remains contested. This article examined how citizens in two democracies (Japan and the United Kingdom) understand and evaluate academic freedom across different issue domains.
Steven David Pickering +2 more
wiley +1 more source
野生动物学报, 1984 麝的生长发育与外形表现有密切联系,了解麝的生长发育规律对麝的外貌鉴定,指导麝的育种、饲养管理及仔麝的培育等生产实践具有重要意义。为了调查麝的生长发育规律,我们在1970—1981年,在汪清县各地区进行了初步调查,收到了一定效果。现将调查结果介绍如下:
梁风锡
doaj
[The investigation on the acute, severe hepatitis of unknown origin in children]. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2022 Yao KH, Meng QH, Yu D.
europepmc +1 more source