Results 111 to 120 of about 16,005 (251)

Beyond CUDOS and DECAY: Mapping Research Norms With an Institutional Logics Wheel

open access: yesEuropean Journal of Education, Volume 61, Issue 2, June 2026.
ABSTRACT The normative landscape of academic research is increasingly fragmented. Classical CUDOS norms and counternorms coexist across profession, market, corporation, state and community logics, yet existing scholarship rarely explains how these norms are patterned, how they interact, or how tensions between them are mediated. This conceptual article
Yuzhuo Cai, Bruce Macfarlane
wiley   +1 more source

Design of aircraft turbine fan drive gear transmission system [PDF]

open access: yes
The following basic types of gear reduction concepts were studied as being feasible power train systems for a low-bypass-ratio, single-spool, geared turbofan engine for general aircraft use: (1) single-stage external-internal reduction, (2) gears (offset
Dent, E., Hirsch, R. A., Peterson, V. W.
core   +1 more source

Investigation of Cell Components for Increasing Ethylene Production in Integrated CO2 Electrolysis

open access: yesChemElectroChem, Volume 13, Issue 9, 5 May 2026.
This study examines how flow field design, gas diffusion electrode (GDE) properties, catalyst loading, GDE compression, and membrane thickness influence ethylene production in a zero‐gap CO2 electrolyzer. The results show that channel size and membrane thickness affect C2+ products.
Fabian Hauf   +3 more
wiley   +1 more source

交错轴斜齿轮啮合的过渡过程畸变

open access: yesJixie chuandong, 2000
The meshing theory of helical gear is applied to analyze the influence of gear base pitch viaration to gear transmission process, and the mathematical model of error and aberrance in the transitional process of crossed helical gear transmission was ...
付景顺, 李文龙, 段振云
doaj  

Gearing [PDF]

open access: yes
Gearing technology in its modern form has a history of only 100 years. However, the earliest form of gearing can probably be traced back to fourth century B.C. Greece. Current gear practice and recent advances in the technology are drawn together.
Coy, J. J.   +2 more
core   +1 more source

Machine Design Experiments Using Gears to Foster Discovery Learning [PDF]

open access: yes, 2015
Machine Design Experiments Using Gears to Foster Discovery Learning For the typical undergraduate engineering student the topic of gears is introduced and discussed in several courses.
Nagurka, Mark L.   +1 more
core   +1 more source

A Soft Robotic Model for Simulating Heart Valve Disease and Cardiac Interventions

open access: yesAdvanced Science, Volume 13, Issue 27, 13 May 2026.
This paper introduces a fully synthetic fabrication methodology for a soft robotic, in‐vitro model of the left‐heart, complete with a functioning mitral valve apparatus. With a view towards patient‐specific modeling, we demonstrate physiological flow and pressure waveforms, tunable mitral valve function with clinical imaging compatibility, and its use ...
James Davies   +14 more
wiley   +1 more source

An investigation of control strategies on gearbox damage [PDF]

open access: yes, 2009
The impact of control on structural elements such as tower and blades have been thoroughly researched and the validity of analysis methods based on aeroelastic simulations is widely accepted.
Crowther, Ashley   +4 more
core  

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

open access: yesAdvanced Science, Volume 13, Issue 28, 18 May 2026.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Split torque transmission load sharing [PDF]

open access: yes
Split torque transmissions are attractive alternatives to conventional planetary designs for helicopter transmissions. The split torque designs can offer lighter weight and fewer parts but have not been used extensively for lack of experience, especially
Kish, J. G., Krantz, T. L., Rashidi, M.
core   +1 more source

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