Results 21 to 30 of about 1,038,648 (163)
Zhejiang Daxue xuebao. Lixue ban, 2019 考虑随机系数自回归模型yt = Φt yt - 1 + ut，其中Φt 为随机系数，ut 为随机误差。在允许Φt 与ut 相依以及无穷的条件下，构造了误差方差的自加权估计，并证明了该估计的渐近正态性。最后通过数值模拟，说明自加权估计的稳健和有效性。
FUKeang(傅可昂) +4 more
doaj +1 more source
Challenges in Advancing LGBTQ+ Equity and Research in Southeast Asian Countries: A Brief Report
Sexuality, Gender &Policy, Volume 9, Issue 3, August 2026.ABSTRACT This brief report provides preliminary findings on the challenges faced by academics, community workers, and other individuals involved in LGBTQ+ rights activism and research in Southeast Asia (SEA), with larger shares of participants from the Philippines, Malaysia, Thailand, and Vietnam.
Viet D. M. Trinh +2 more
wiley +1 more source
四川大学学报. 自然科学版, 2011 环簇和轨形在数学和物理中具有广泛的联系.单纯环簇实际上就是一类具有良好结构的轨形.作者通过推广扇集和环簇之间的对应,定义了加权扇集和加权环簇,并给出了它们之间的对应.然后,作者讨论了加权环簇的性质,并证明了单纯加权环簇也具有轨形结构.
陈新红, 尚进
doaj
Moving in Cycles: Explaining the Failure of Militarization to Address Illegal Mining in Ghana
Politics &Policy, Volume 54, Issue 4, August 2026.ABSTRACT Mining contributes to Ghana's economic growth but also imposes significant social costs—land dispossession and unemployment—which have fueled the rise of illegal mining (galamsey). Galamsey, which intensified during the commodity boom of the 2010s, provides livelihoods while simultaneously worsening environmental degradation and social ...
Sulemana Alhassan Saaka, Phil Faanu
wiley +1 more source
Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT What are the conditions under which business corporations expand their institutional power? This paper argues that institutional power is affected by the architecture of the “acquisition regime”—the set of formal (and informal) rules that govern how states purchase public services.
Reut Marciano, Shir Gal
wiley +1 more source
四川大学学报. 自然科学版, 2007 从分数演算基本的G-L定义出发,引出G-L数值算法中加权系数——G-L加权系数与广义二项式系数之间的关系,进而通过Γ函数来求解G-L加权系数.而后用加权系数的参数构建一个二维平面,使这些参数由整数域拓展到整个实数域,实现了分数演算中加权系数和对应二项式系数的推广.最后利用Matlab语言编程实现,为分数演算的数值计算提供方便、快捷的工具.
张恒 +4 more
doaj
Review of Policy Research, Volume 43, Issue 4, July 2026.ABSTRACT The accelerated digitalisation of society has amplified cybersecurity threats and revealed their cross‐sectoral nature. Yet, the policy instruments used to address these challenges remain insufficiently examined. This study conducts a scoping review of 980 academic articles (2007–2024) and applies Hood's NATO framework (Nodality, Authority ...
Benedetta Cotta, Maria Stella Righettini
wiley +1 more source
赋Orlicz范数的加权Bergman空间及加权Bergman投影
四川大学学报. 自然科学版, 1999 证明了加权Ｂｅｒｇｍａｎ投影Ｐａ．是弱（１，１）型的，从而用一个新的拓广的插值空间定理证明了Ｐａ．在加权Ｏｒｌｉｃｚ空间Ｌφ上有界等价于函数φ满足Δ２和Δ２ ...
吴文明, 马继刚
doaj
First Documentation of Two Rare Fern Species in Xishuangbanna National Nature Reserve, Yunnan, China
Integrative Conservation, Volume 5, Issue 2, Page 173-176, June 2026.We report two rare ferns in Menglun Sub‐reserve in Xishuangbanna National Nature Reserve, Yunnan Province, China. These represent the first documented distribution of the previous Laotian endemic fern species in Yunnan and China as well. Our observations confirmed the shared plant diversity in China‐Laos border and also represent the need for more ...
Hongmei Liu +3 more
wiley +1 more source