Results 81 to 90 of about 482,370 (249)
Powered-lift aircraft technology [PDF]
Powered lift aircraft have the ability to vary the magnitude and direction of the force produced by the propulsion system so as to control the overall lift and streamwise force components of the aircraft, with the objective of enabling the aircraft to ...
Deckert, W. H., Franklin, J. A.
core +1 more source
Multi‐Dimensional Conductive Nanocomposites for Flexible Electronics
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Multi‐dimensional conductive nanocomposites integrate 0D, 1D, and 2D nanomaterials through spatial structure regulation and interface engineering, achieving “1 + 1 > 2” synergistic effects. By leveraging 0D filling to reduce contact resistance, 1D bridging to construct continuous conductive paths, and 2D supporting to enhance mechanical stability ...
Tianyu Wang +12 more
wiley +1 more source
The environmental analysis of helicopter operations by Federal agencies: Current procedures and research needs [PDF]
The technical, economic, and environmental problems restricting commercial helicopter passenger operations are reviewed. The key considerations for effective assessment procedures are outlined and a preliminary model for the environmental analysis of ...
Dajani, J. S. +2 more
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.First integration of ZnO nanorods with aerosol‐printed 3D Ag meshes for UV photodetector. 3D Ag/ZnO enhances light absorption and charge separation by providing a large active surface area for efficient charge generation and a strong UV response.
Elius Hossain +3 more
wiley +1 more source
Is there a shortfall in public capital investment? An overview [PDF]
Capital investments ; Public policy ; Infrastructure (Economics)
Alicia H. Munnell
core
Environmental Policy and Governance, EarlyView.ABSTRACT The growing complexity and severity of cross‐border climate risks characterised by non‐linear impact chains and deep uncertainty questions the capacity of environmental governance to tackle these problems effectively and in a just manner. To increase the efficiency of climate action, the private sector has been called upon to leverage market ...
Päivi Tikkakoski, Sirkku Juhola
wiley +1 more source
Classification and reduction of pilot error [PDF]
Human error is a primary or contributing factor in about two-thirds of commercial aviation accidents worldwide. With the ultimate goal of reducing pilot error accidents, this contract effort is aimed at understanding the factors underlying error events ...
Boley, G. D. +2 more
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Governing Within the Constraints of Carbon Budgets: Regional Insights From Sweden
Environmental Policy and Governance, EarlyView.ABSTRACT Staying within the limits of a rapidly shrinking global carbon budget while avoiding dependency on negative emissions technologies and carbon dioxide removal remains a significant challenge in a multi‐level governance system, where resources and responsibilities are dispersed among different actors.
Paula Lenninger, Magdalena Kuchler
wiley +1 more source
Endogenous Control of Service Rates in Stochastic and Dynamic Queuing Models of Airport Congestion [PDF]
, 2014 Airport congestion mitigation requires reliable delay estimates. This paper presents an integrated model of airport congestion that combines a tactical model of capacity utilization into a strategic queuing model.
Jacquillat, Alexandre, Odoni, Amedeo R.
core
Design of a Hydroelectronic Solar‐Tracking System for Solar Panels
Energy Science &Engineering, EarlyView.A prototype of a passive solar‐tracking system utilizing buoyant force based on water level was developed, and its MATLAB/Simulink model was implemented. This study is expected to encourage researchers to design solar‐tracking mechanisms using metals with different thermal expansion coefficients, air, oil, and other fluids. ABSTRACT This study presents
Ufuk Süğürtin, Türker Fedai Çavuş
wiley +1 more source