Results 81 to 90 of about 32,081 (263)
Review of Policy Research, EarlyView.Abstract Populist radical right parties are on the rise all over Europe. Recent literature investigates their effects on environmental policy, however, often applying an overly broad perspective on the policy area and neglecting causal mechanisms. This article addresses both gaps in an in‐depth case study of partisan effects on Swedish environmental ...
Lars E. Berker
wiley +1 more source
基于主成分分析对城市环境质量因素进行综合评价——以厦门市为例 [PDF]
, 2009 在简要介绍主成分分析方法后,根据厦门市1998—2007年各环境相关因素指标数据,对厦门市近十年的环境进行了评价分析。将主成分分析应用于厦门市环境质量因素的综合评价,通过分析导出了影响环境质量的几个主成分分量。根据计算得出相应的评价值,并对比厦门市自1997年以来往后十年的环境状况公报。结果表明,主成分分析是进行环境质量指标选取 ...
黄欣
core
“Semper supra”? Trump administration policy narratives and the creation of the space force
Review of Policy Research, EarlyView.Abstract In 2019, the Donald Trump administration rejected the draft Treaty on the Prevention of Placement of Weapons in Space (PPWT) in the UN Conference on Disarmament and instead created the Space Force, the first new US military service branch established in decades.
Jeffrey S. Lantis
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 1991 用气相色谱/质谱/计算机联用方法(GC/DS),分析了中药益智仁挥发油的化学成分,从分离出的95个色谱峰小鉴定出34个化合物,其主要成分是对一(纟散)花烃(55.19％)、雅槛兰烯(3.74％)、芳樟醇(3.10％)、o-蒎烯(3.06％)、γ-松油醇(3.06％)、1.8-桉叶素(0.90％)。
doaj
野生动物学报, 2009 2006～2008年的冬季,在黑龙江省完达山东部林区,利用布设样线的方法对东北兔生境选择进行了研究。通过生境选择指数分析表明,东北兔主要选择中坡位、阳坡、坡度小于25度、离人为干扰距离大于1000m的针阔混交林和灌丛生境;主成分分析表明,隐蔽条件、食物、温度和人为干扰是影响东北兔生境选择的主要生境因子。
任梦非, 黄海娇
doaj
箱形钢楼盖主梁对（超）高层混合框架-钢筋混凝土核心筒结构性能的影响研究
Jianzhu Gangjiegou Jinzhan, 2022 为了解决超高层建筑的混合框架-钢筋混凝土核心筒结构中设置加强层带来的结构刚度和内力突变，并易形成结构薄弱层的问题，基于前期的工程研究和对已有成果的理解，提出了采用箱形钢梁替代传统的工字形钢梁作为楼盖主梁，提高钢楼盖主梁的抗弯和抗扭刚度，期望其可以达到代替结构加强层的效果。在分析了箱形钢楼盖主梁替代工字形钢楼盖主梁的技术可行性后，以已建成的实际工程——海南大厦主楼为研究对象，利用PKPM-PMSAP软件对两种楼盖主梁结构方案进行分析，分别从结构设计指标、经济指标等方面进行了对比分析。研究表明 ...
卢林枫, 李忠鹏, 丁凯, 严宏伟
doaj
Zhejiang Daxue xuebao. Lixue ban, 2003 乙酸胆碱酯酶抑制剂是治疗早老性痴呆病的主要药物,为了给合成提供一些理论依据,可以利用3D-QSAR中的CoMFA方法研究乙酰胆碱酯酶抑制剂定量构效关系.研究表明,从PLS分析的rcv2,r2值看,模型有较强的预测能力;从立体与静电作用分数比看,立体因素占主要地位,对合成有一定的指导作用.
ZHAOWen-na(赵文娜) +5 more
doaj +1 more source
A geographical study on urban migration in the Kanto region [PDF]
, 1996 The author owes endless gratitude to many persons who gladly supported him to complete this dissertation. Special appreciation is presented to Professor Takashi Okuno for his kind advice and help in writing this dissertation.
Ohzeki Yasuhiro, 大関 泰宏
core
Review of Policy Research, EarlyView.Abstract Short‐term policy (STP) has attracted considerable attention as a form of time‐related public policy and is typically used to solve urgent problems. The objective of this study, which considers STP as policy myopia from an information science perspective, is to discuss the challenges encountered during the STP policymaking process and their ...
Prasongchai Setthasuravich +1 more
wiley +1 more source