Results 121 to 130 of about 31,411 (255)
Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Policy Studies Journal, EarlyView.Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
wiley +1 more source
Study on Ensemble Algorithm for Multi-class Gene Microarray Datasets [PDF]
, 2015 集成学习是当前机器学习领域的一个研究热点，具体到多分类问题，旨在通过一组差异的分类器共同解决起初的多分类问题，然后经过大多数投票等策略将各个分类器的输出结果进行融合。集成多分类算法相比于单个的优秀分类器往往性能上更准确、更稳定，同时还具有更强的泛化能力。在解决多分类问题时，基于纠错输出编码算法（ECOC）。这是解决多分类问题的一种灵活、高效的算法框架，关键要点是将多分类转变为多个二分类问题。此外，遗传规划算法可用于解决二分类问题，通过进化计算得到准确的分类规则。本文在已有的研究基础上 ...
曾志浩
core
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
Zhongguo shiyan zhenduanxue, 2008 目的探讨FⅫ基因exon146C/T基因多态性与血栓形成的关联性。方法采用PCR-RFLP法鉴定了92例血栓性脑梗塞患者和87例静脉血栓患者及129例健康人的FⅫ基因exon146C/T基因型及C、T等位基因分布频率,采用多元Logistic非条件回归分析方法,进行多因素分析,解析FⅫ基因46C/T多态性与血栓性脑梗塞、静脉血栓形成的关联性。结果血栓性脑梗塞组和静脉血栓组的C等位基因分布频率均高于对照组,血栓性脑梗塞组的C/C基因型在血栓形成中的危险性是T/T基因型的14.533倍,具有统计学意义 ...
张玲 +5 more
doaj
Molecular mechanism of inhibitory effect of lipoxin A4 on estrogen-induced epithelial to mesenchymal transition (EMT) in endometriosis [PDF]
, 2016 子宫内膜异位症，简称内异症（Endometriosis，EM），是育龄妇女的常见病，它是指具有活性的子宫内膜出现在子宫腔以外所引起的一种病变。人群发病率高达10%-15%。其典型症状为不孕和疼痛，严重影响患者的生活质量和家庭和谐，尤其是高达50%的复发率，给家庭和社会带来沉重的经济负担。这一系列防治难题的根本原因在于发病机制尚不明确。解析内异症的发病机制，进而寻找新的药物靶点和安全高效的治疗方法具有重大意义。 本论文首先以临床内异症患者在位/异位子宫内膜组织及非内异症患者子宫内膜组织为研究对象 ...
吴荣锋
core
The Inclusion Trade‐Off: Comparing the Design and Functionality of Collaborative Governance Forums
Policy Studies Journal, EarlyView.ABSTRACT Environmental challenges require collaboration across jurisdictions, often through forums or intermediary spaces for repeated interaction. A persistent forum design question concerns inclusion criteria, or which actors should be included.
Adam Wiechman +3 more
wiley +1 more source
野生动物学报, 2012 近年来,威海一直致力于生态城市的建设。物种多样性是生态城市的重要指标,而在物种多样性中,城市鸟类多样性起着重要的作用。本文调查了冬季威海7个斑块（2个校园和5个典型生活小区）的鸟类多样性,对其物种多样性指数以及均匀度指数进行分析,得出山东大学校园和哈尔滨工业大学校园的鸟类多样性高于5个小区斑块,而且2个校园斑块的均匀度在7个斑块中也处于较高水平。另外,结合实际情况,文章从绿化面积、城市栖息地的空间异质性、生境破碎化程度以及人为干扰4个方面对城市鸟类丰富度与多样性的影响因素做出讨论 ...
高伟 +5 more
doaj
[The correlation between FCER2 gene polymorphism and the efficacy of inhaled corticosteroids in patients with chronic rhinosinusitis]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023 Liu S +6 more
europepmc +1 more source