Results 41 to 50 of about 6,746 (165)
Are Team Management Funds More Attractive to Investors: Empirical Analysis Based on Equity Funds in China [PDF]
, 2016 个人管理与团队管理孰优，这是备受心理学界、经济学界瞩目的议题。众多学者通过实验、理论分析，普遍认为这两者之间是确确实实存在系统性差异的，但这种差异的方向却不尽然一致：团队做出的决策可能更加偏激、极化，也可能更加保守。随着我国公募基金业的发展，团队管理模式基金（由不止1名基金经理管理的基金）也不断增多。基金在团队管理与个人管理模式下分别具有怎样的风险和收益水平，何者更受投资者的认可，成为了一个值得研究的问题。本文主要着眼于基金的团队管理模式与资金流量及基金业绩与风险的关系 ...
汪冰冰
core
Policy instruments attitudes and support for government responses against Covid‐19
Review of Policy Research, Volume 42, Issue 4, Page 982-1007, July 2025.Abstract An individual's political attitudes have been documented as the most important predictor of acceptance of government measures against the COVID‐19 pandemic. Their effect, however, is somewhat unclear and cannot be reduced to one dimension. In this article, we test whether general attitudes toward policy instruments might, together with left ...
Arnošt Veselý +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 屈曲约束钢板联肢剪力墙结构通过在整体墙中部开设竖向贯通的洞口并均匀布置屈曲约束钢板组件来改进传统联肢剪力墙结构的抗震性能。通过算例对比了整体墙及基于该结构改进的屈曲约束钢板联肢剪力墙结构在地震时程作用下的动力响应,发现了后者在减小地震响应上的优越性,具有良好的抗震性能。同时,提出了屈曲约束钢板联肢剪力墙的弹塑性分析简化模型,并根据理论分析,给出了简化模型中相应参数的设计公式。最后通过原模型及简化模型在地震时程曲线下的动力响应,验证了所提出的弹塑性分析简化模型的准确性和高效性。
王海江 +3 more
doaj
Zhejiang Daxue xuebao. Lixue ban, 2013 主要研究一维Theta神经元网络的微分方程模型，从神经元生理运动特点和微分方程入手对该网络模型进行研究.对模型中的输入形式进行简化，给输入一个扰动，证明了扰动后多放电行波解的存在性.
GAOFei-fei(高菲菲) +1 more
doaj +1 more source
Simplified model of calculating heterojunctionband [PDF]
, 2001 本论文的工作可分两部分。第一部分是关于异质结带阶的研究。第二部分研究周期性磁场下单量子阱中电子的能带结构。 在带阶研究中，我们主要对应变层异质结的带阶进行研究。首先采用基于密度泛函理论框架下的模守恒赝势法计算得到体半导体材料的能带结构，接着我们把平均键能方法推广应用于应变层异质结的价带和导带带阶研究。通过平均带阶参数形变势和研究带阶参数随应变状态的变化关系，发现平均带阶参数在不同应变状态下基本上保持不变，从而建立了异质结带阶计算的简化模型。这样，在应变层带阶参数的计算中 ...
廖任远
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Integrative Conservation, Volume 4, Issue 2, Page 254-267, June 2025.Our research demonstrates that in mirroring prevailing human biases towards different insect groups, LLM chatbots oversimplify insect diversity by predominantly restricting “bees” to honeybees and “wasps” to yellowjackets, neglecting the majority of biodiversity that includes wild bees and parasitoid wasps, while also favouring Nearctic species in ...
Marina Moser +2 more
wiley +1 more source
Simplified Model and Simulation of CFB Boiler [PDF]
, 2005 循环流化床锅炉是一个多参数、非线性、时变及多变量紧密耦合的复杂系统，使得其自动控制比一般锅炉更加复杂和困难，因此建立循环流化床锅炉动态模型，分析和研究锅炉动态特性，弄清楚众多变量间的相互关系、耦合程度以及对燃烧过程的影响方式，对循环流化床锅炉设计改进、锅炉参数优化、生产优化以及自动控制系统的设计、调试和控制系统的可靠运行至关重要。基于以上原因，本文建立了一个循环流化床锅炉整体动态简化数学模型，该模型包括燃烧系统动态数学模型和汽水系统动态数学模型。在燃烧系统的建模过程中，本文采用了小室法 ...
佘文武
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Dualization and Social Policies: A Conceptual and Analytical Framework
Politics &Policy, Volume 53, Issue 3, June 2025.ABSTRACT This thematic review offers a conceptual and analytical framework to assess, identify, and explain the processes of dualization in labor markets and social protection systems in 21st‐century welfare states. After a brief historical examination of the concept's origins, we review the primary definitions, theories, and typologies developed to ...
Gibrán Cruz‐Martínez +1 more
wiley +1 more source
A Simplified Model with Soil Water Limitation on Spring Wheat Growth [PDF]
, 2000 建立了以日长 (L)和日总辐射 (TDR)为自变量的春小麦 (TriticumaestivumL .)碳同化和干物质累积 (DMA)的简化模型 ;考虑了水分限制下光能利用效率 (α)、碳传输导度 (gc)均被降低的设定 ,将反映春小麦水分状况的叶水势 (Ψ)作为参数纳入本模型 ;Ψ则通过多元回归由 80cm土层相对含水量 (θR ,80 )、气温 (Ta)、水汽压差 (VPD)、低于- 1.5MPa叶水势之和 (Ψc ,1.5)给出。讨论了模型在“黑河地区地气相互作用研究”中的应用实例 ...
米谷俊颜(日本冈山大学生物资源研究所) +2 more
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The Chinese metaverse: An analysis of China's policy agenda for extended reality (XR)
Policy &Internet, Volume 17, Issue 1, March 2025.Abstract This paper explores China's strategic embrace of extended reality (XR) technologies within its digital economy policy framework. Through a content analysis of 45 Chinese government documents, we show how China has positioned XR—which encompasses augmented reality (AR), virtual reality (VR) and mixed reality (MR)—within the nation's innovation ...
Joanne E. Gray, Wenjia Tang
wiley +1 more source