Results 51 to 60 of about 60,617 (172)
Shuitu Baochi Xuebao, 2005 退耕还林还草是目前黄土高原整治生态环境和控制水土流失的主体政策。为使生态退耕政策得到有效落实,本文基于WIN-YIELD软件,以延安燕沟流域为例,利用19972002年延安站的逐日气象数据和燕沟流域地貌、土壤及土地利用等资料,模拟分析了不同地形高程、坡度和坡向条件下坡耕地种植不同作物可能产生的水土流失量及其地形分异特征。结果表明:地形坡度是影响径流和泥沙产生的重要因素,产生径流和泥沙的模拟值随地形坡度的增大而增大,地形坡度15°是坡耕地土壤侵蚀模数的相对质变点;地形高程和坡向对产生径流和泥沙的影响不大。
徐勇 田均良 刘普灵 徐学选
doaj +2 more sources
Multiscale variations of cosmogenic nuclides over the last 3 kyr: the decadal 10Be record from the Dome Fuji 2001 shallow ice core revisited [PDF]
, 2016 第4回極域科学シンポジウム横断セッション：[IC] 極域アイスコア・地形地質・モデリングから迫る古環境変動とそのメカニズム11月13日（水） 統計数理研究所 ３階セミナー室１ ...
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Research on English‐Medium‐Instruction (EMI) highlights inadequate support for students transitioning from L1‐medium‐instruction to EMI. To date, little research has focused on how L2 students’ adaptation to an EMI environment influences their L2 learning motivation (LLM).
Kevin W. H. Tai
wiley +1 more source
Shuitu Baochi Xuebao, 2002 在地貌信息熵计算方法和涵义讨论的基础上,计算了豫西中部山地面积大于100 km2各流域的地貌信息熵值,进而分析了豫西中部山地的地貌演化阶段,得出以下结论地貌演化处于壮年期和老年期的过渡阶段;各流域坡面形状多为下凹形为主,但山地整体的坡面形状近于直线形.
管华
doaj
Chemical components of soluble aerosols in Antarctic surface snow [PDF]
, 2016 第4回極域科学シンポジウム横断セッション：[IC] 極域アイスコア・地形地質・モデリングから迫る古環境変動とそのメカニズム11月12日（火） 統計数理研究所 ３階セミナー室１ ...
保科 優 +7 more
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Nations and Nationalism, EarlyView.ABSTRACT This study presents one of the first comparative analyses of digital nationalism on social media. Using a computational mixed‐method approach—combining supervised, computer‐assisted content analysis with network modelling—it analyses 64,541 tweets from Twitter and 91,063 posts from Weibo surrounding a shared geopolitical flashpoint: President ...
Chris Chao Su, Jun Liu
wiley +1 more source
第1章 序論 第2章 丘陵地形の上流と下流地面上に滑り条件を課した場合-低Reynolds数から比較的高いReynolds数(数千)までを対象としたDNS- 第3章 丘陵地形の上流と下流地面上に滑り条件を課した場合-高Reynolds数を対象としたLES- 第4章 丘陵地形の表面とその下流地面上に滑り無し条件を課した場合-地形背後の剥離･再付着流れに対する安定成層の効果- 第5章 地面上全てに滑り無し条件を課した場合-地面境界層に埋没した丘陵地形の周辺流れ- 第6章 結論Made available ...
Uchida, Takanori, 内田, 孝紀
core
Moralization in Policy Narratives: Insights From the Politics of Climate Change and Public Health
Policy Studies Journal, EarlyView.ABSTRACT In this study, we examine the process of moralization—defined as the use of moral values to mobilize support for or against policy proposals. Specifically, we investigate how political parties strategically employ moralization to influence policy processes, varying their approach depending on their political ideology and institutional position.
Simon Schaub, Jale Tosun, Maria Becker
wiley +1 more source
Policy Studies Journal, EarlyView.ABSTRACT Why did Australia go from the White Australia Policy, which excluded non‐whites, to institutionalizing multiculturalism policy in the 1970s? This question defies traditional political ideologies of the major political parties, which had long supported the White Australia Policy. This article is a rare empirical demonstration of the Five‐Thread
Julius C. S. Mok
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2003 油气的运移、聚集与地下水动力场的形成与演化密切相关.随着沉积盆地的形成与演化,地下水动力场也有形成、发展和消亡的过程.讨论鄂尔多斯盆地地下水动力场的形成与演化,推断其油气的分布规律:大气水下渗——向心流处为水区,天然气离心流区为气区,越流天然气漏失区对应于气水共存过渡区.
JINAi-min(金爱民) +5 more
doaj +1 more source