Results 81 to 90 of about 28,185 (297)
Business Strategy and the Environment, EarlyView.ABSTRACT While industry platforms are widely recognized as enablers of circular innovation, we still know little about how they evolve to scale and sustain innovation as economic conditions tighten and circular economy funding schemes become more selective.
Eva Qi Wang +3 more
wiley +1 more source
Stator hub treatment study [PDF]
The results of an experimental research program to investigate the potential of improving compressor stall margin by the application of hub treatment are presented.
Hilvers, D. E., Wisler, D. C.
core +1 more source
Rank‐based estimation of propensity score weights via subclassification
Canadian Journal of Statistics, EarlyView.Abstract Propensity score (PS) weighting estimators are widely used for causal effect estimation and enjoy desirable theoretical properties, such as consistency and potential efficiency under correct model specification. However, their performance can degrade in practice due to sensitivity to PS model misspecification.
Linbo Wang +3 more
wiley +1 more source
Preliminary design study of advanced multistage axial flow core compressors [PDF]
A preliminary design study was conducted to identify an advanced core compressor for use in new high-bypass-ratio turbofan engines to be introduced into commercial service in the 1980's.
Koch, C. C. +2 more
core +1 more source
Passive casing treatments for stall margin improvement in axial compressors
, 2020 Axial flow compressors are mainly used in the power generation and aerospace industry. Axial compressors are prone to instability issues since it is the nature of compressors to impart work on a fluid across an adverse pressure gradient. Instability in the compressor will instigate rotating stall and ultimately surge within the compression system.
openaire
Deep Underground Science and Engineering, EarlyView.This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh +12 more
wiley +1 more source
Evaluation of range and distortion tolerance for high Mach number transonic fan stages. Task 2: Performance of a 1500-foot-per-second tip speed transonic fan stage with variable geometry inlet guide vanes and stator [PDF]
A 0.5 hub/tip radius ratio compressor stage consisting of a 1500 ft/sec tip speed rotor, a variable camber inlet guide vane and a variable stagger stator was designed and tested with undistorted inlet flow, flow with tip radial distortion, and flow with ...
Bilwakesh, K. R. +2 more
core +1 more source
Environmental Policy and Governance, EarlyView.ABSTRACT As global climate ambitions intensify, the key challenge lies not in setting renewable energy targets but in designing governance systems that can translate them into lasting transformation. The transition management literature has advanced a valuable research agenda for initiating change through niche innovations and participatory arenas in ...
Alexander L. Q. Chen‐Florea +2 more
wiley +1 more source
Thrust stand evaluation of engine performance improvement algorithms in an F-15 airplane [PDF]
An investigation is underway to determine the benefits of a new propulsion system optimization algorithm in an F-15 airplane. The performance seeking control (PSC) algorithm optimizes the quasi-steady-state performance of an F100 derivative turbofan ...
Conners, Timothy R.
core +1 more source
Energy Science &Engineering, EarlyView.This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak +2 more
wiley +1 more source