Results 71 to 80 of about 23,963 (268)
Corporate 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
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +1 more source
Journal of EngineeringOverheating is a common issue in a nonparallel helical gearing system. The reason is the high friction, sliding velocity, and tangential force that occurs between meshed gear teeth.
Mohammed Abdulaal Kadhim +1 more
doaj +1 more source
Vibration in Planetary Gear Systems with Unequal Planet Stiffnesses [PDF]
An algorithm suitable for a minicomputer was developed for finding the natural frequencies and mode shapes of a planetary gear system which has unequal stiffnesses between the Sun/planet and planet/ring gear meshes.
August, R., Frater, J. L., Oswald, F. B.
core +1 more source
Seismic analysis and design of tunnels within fault ground: A review
Deep 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
Jixie chuandong, 2014 According to the processing method and meshing theory,the equation of the asymmetric face gear is deduced.Asymmetric and symmetric face gear drive model are established by Pro/E, the analysis is carried out through importing them to ABAQUS.The material ...
严宏志 +4 more
doaj
Applied SciencesThis study proposes an asymmetric pitch control technique for electric oil pumps with symmetric gear-type pumps in order to reduce noise and vibration. For vane pump noise reduction, mechanical asymmetric pitch arrangements of each vane are widely used ...
Chinchul Choi
doaj +1 more source
Environmental Policy and Governance, EarlyView.ABSTRACT The governance of shared water systems requires collaboration across diverse stakeholders. In this study we advance the theoretical understanding of asymmetric collective action problems (CAPs) by reassessing the role of third‐party interventions and emphasizing the strategic importance of policy brokers and institutional venues.
Anna Bendz, Simon Matti, Patrik Öhberg
wiley +1 more source
Meshing Characteristic Analysis of the Gear Rack Drilling Rig Hoisting System
Jixie chuandong, 2015 The gear rack drilling rig hoisting system adopts statically indeterminate structure design,in the process of drill-down and lifting,the loading asymmetry influences the synchronism of gear rack meshing movement.Therefore,it is very important to study ...
Lei Na +3 more
doaj
Study on Influence of Spalling Fault Evolution on Meshing Stiffness of Spur Gear
Jixie chuandong, 2021 As a key transmission mechanism in mechanical equipment，in the meshing transmission process of involute spur gears，under the influence of extreme working conditions，the tooth surface is easy to cause spalling defects，change the meshing rigidity of gear ...
Peng Dai +5 more
doaj