Results 51 to 60 of about 10,715 (144)
野生动物学报, 1992 近年来,我国鸟类环志事业有了很大的发展,全国每年环志鸟类数量已达数万只,鸟环回收数也随之增加。环志的回收完全可以看成是鸟类的捕捉、标志、释放及重捕。显然,数量调查中的重捕原理及计算公式均可以应用到鸟环回收的分析中来。也就是说,利用鸟环的回收数量可以统计出鸟类的死亡过程（生命表）,成活率,种群数量及其变动情况。因而,鸟类的环志与回收对鸟类种群生态的研究具有极其重要的意义。
朴仁珠, 孙安林
doaj
A Framework of Nature Education 自然教育的框架
Integrative Conservation, Volume 4, Issue 1, Page 38-44, March 2025.The framework of nature education provides guidance for educators in designing and improving their programs. Principles within this framework, categorized into foundational concepts, engagement strategies, and desired outcomes, offer a shared language for discussing nature education, and emphasize the role of nature education in human well‐being and ...
Alex Kudryavtsev
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野生动物学报, 1993 我国鸟类环志的萌芽思想虽渊源流长,但一直未能发展起来,到了近代,已经远远落在欧美和日本等发达国家之后。但自1983年,全国环志中心建立以来,我国环志事业才有了新的开端。之后,有了较快而长足的发展。目前,我国已拥有40多处遍布全国的不同级鸟类环志站（点）,已环鸟号达5万只以上,回收环志超百号。回收地波及北至俄罗斯西伯利亚、南抵澳大利亚、中间日本、南亚、诸国及印度等十几个国家。尽管如此 ...
金东庆, 于新建, 朴仁珠
doaj
清代の中日文化交流に関する研究は、中国の学界において早くも清朝末期から始まっていた。その後、百年以上の間、中日関係と中国の国内状況の変化に影響されつつも、中断されたことはなく、すでに膨大な研究成果が蓄積されている。本稿では、清末・中華民国時代、中華人民共和国成立後の現代という二つの時期に分けて、この研究分野で、中国の学界が主にどのような研究成果を上げてきたかを紹介する ...
呂, 順長
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Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 3, Page 303-310, March 2025.ABSTRACT Objective Globally, one in four pregnant women is classified as overweight or obese, based on their prepregnancy body mass index (BMI). Obese pregnant women are at increased risk of adverse pregnancy outcomes and long‐term cardiovascular disease that occurs earlier in life.
M. Charakida +6 more
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Uncovering Xi Jinping's Policy Agenda: Text As Data Approach
The Developing Economies, Volume 63, Issue 1, Page 9-46, March 2025.How many agendas has Xi Jinping put forth and promoted since taking office in 2012, and what are the types of agendas? How much of political attention has each agenda received, and how has the allocation of attention changed over time? We utilize a dataset of presidential statements, speeches, and reports from 2012 to 2022 and employed automated text ...
Jaehwan Lim, Asei Ito, Hongyong Zhang
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马六甲及其华人社会——以明清文献为探讨中心（1405-1911） [PDF]
, 2011 本论文主要梳理中国明清文献对马六甲的历史记载，以借此窥探明清文献笔下十五世纪至十九世纪的马六甲。根据《明史》记载，有关马六甲与中国的关系始于永乐元年（1403）明成祖派遣尹庆到访满剌加国，自此展开两国间的朝贡贸易关系和开启华人移居南洋的历史。现有的一些中国史籍显示早在满剌加与中国建交时已有华人在满剌加生活的痕迹，由此得知中国明清时期的历史文献，确有关于古代马六甲与其社会面貌的历史记载。因此，本论文的研究年代从 1405 年马六甲建国初期开始，至 1911年清代结束为界限 ...
Chong, Yee Cheun, 张, 义君
core
Policy &Internet, Volume 16, Issue 4, Page 801-817, December 2024.Abstract Disinformation concerns have heightened the importance of regulating content and speech in digital communication environments. Perceived risks have led to widespread public support for stricter control measures, even at the expense of individual speech rights.
Adrian Rauchfleisch, Andreas Jungherr
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