Results 41 to 50 of about 6,393 (301)

直齿内齿轮固有频率灵敏度有限元分析

open access: yesJixie chuandong, 2008
Internal spur gear is the object of study,and the solid model is built based on PRO/E,while finite element is built based on PRO/MECHANICA.Make use of sensitivity analysis technology of PRO/MECHANICA to study the main structure parameter witch affects ...
李峰, 王松雷, 韩刚
doaj  

Research on Loaded Transmission Error of Internal Short Tooth Spur Gears

open access: yesJixie chuandong, 2023
Loaded transmission error is an important parameter in evaluating the meshing performance of gears. The smaller the fluctuant amplitude of the loaded transmission error is, the better the meshing performance is.
Yin Xunmin, Jia Haitao, Zhang Xijin
doaj  

Sustainable Business Model Innovation and Firm's Performance: A Multiple Case Study in the Agri‐Food Industry

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This research investigates how sustainability‐oriented initiatives aimed at innovating a firm's business model can lead to different economic, social and environmental performance configurations, with the objective of identifying the determinants that explain these differences. We carried out a multiple case study, selecting firms based on the
Paolo Di Toma   +3 more
wiley   +1 more source

直齿内齿轮应力灵敏度有限元分析

open access: yesJixie chuandong, 2008
Internal spur gear is the object of study and build finite element analysis modal.Solid model is built based on PRO/E,and finite element is built based on pro/mechanica.Make use of sensitivity analysis technology of pro/mechanica to study the main ...
吉晓梅, 王松雷, 韩刚, 殷玉枫
doaj  

Seismic analysis and design of tunnels within fault ground: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang   +6 more
wiley   +1 more source

Myopia Development and Control: An Integrative Review of Genetic, Optical, and Environmental Mechanisms With Implications for Personalized Intervention

open access: yesEye &ENT Research, EarlyView.
ABSTRACT Myopia is a rapidly growing global health challenge, affecting 1.9 billion people and projected to reach 4.9 billion by 2050, with high myopia and its sight‐threatening complications such as maculopathy, retinal detachment, and glaucoma increasing disproportionately.
Victor Opoku‐Yamoah   +2 more
wiley   +1 more source

渐开线直齿内齿轮的轮齿变形挠度解析

open access: yesJixie chuandong, 2008
The first thing is to calculate the deformation of the loaded gear,when researching dynamic characteristic of the gear transmission and controlling the transmission quality.In order to deduce a simplified approximate formula to calculate the tooth ...
康焱, 石照耀, 林家春, 姚文席
doaj  

The EU Cities Mission: A Governance Innovation for Stockholm?

open access: yesEnvironmental Policy and Governance, EarlyView.
ABSTRACT Acknowledging that cities play a key role in climate change mitigation, the European Union (EU) launched the Cities Mission in 2021 to accelerate urban climate action. Intended as a governance innovation, it seeks to stimulate mission‐oriented governance in cities.
Lisa Sanderink   +2 more
wiley   +1 more source

Policy Spandrels: How Design Decisions Can Open Up Spaces for Unintended Policy Change

open access: yesEuropean Policy Analysis, EarlyView.
ABSTRACT This article introduces the concept of policy spandrels to make sense of public policies producing second‐order effects that are unintentional from the perspective of policy design and yet are fraught with consequences. By analogy with architectural spandrels—leftover spaces that can be used for unforeseen purposes—policy change can be enabled
Martino Maggetti
wiley   +1 more source

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