Results 171 to 180 of about 633,054 (390)
An Overview and Comparison of Aviation and Space Insurance [PDF]
, 2019 Commercial aviation and commercial space operations entail significant risk. The very nature of these operations means a mishap can result in significant financial losses.
Suchodolski, Jeanne
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Canadian Journal of Statistics, EarlyView.Abstract Response‐based sampling is often used in modelling rare events from large, imbalanced data for efficiency. When modelling the event with logistic regression, the sampling design may be adjusted for using sampling weights or an offset. We propose a stratified sampling design for modelling rare events with large data which improves on previous ...
Johanna de Haan‐Ward +2 more
wiley +1 more source
Quest for Aviation Growth [PDF]
Based on a review of the Airlines Alliances in various parts of the world, the paper comments on the choices before India. It develops the basic contours of strategy for growth of Indian Aviation and notes the role of the government in this context.
Singh J P
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Emissions and new technology programs for conventional spark-ignition aircraft engines [PDF]
, 1976 A long-range technology plan in support of general aviation engines was formulated and is being implemented at the Lewis Research Center. The overall program was described, and that part of the program that represents the in-house effort at Lewis was ...
Wintucky, W. T.
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Improving the Economics of Sustainable Aviation Fuels: System‐Level Analyses and Perspective
ChemSusChem, EarlyView.A coproduction strategy is developed to address the economic and environmental limitations of sustainable aviation fuel (SAF) production. Using lignocellulosic biomass, the integrated process coproduces SAF, adipic acid, and furfural. Techno‐economic and life‐cycle analyses reveal improved profitability and a substantial reduction in carbon emissions ...
Sungil Yun +6 more
wiley +1 more source
ChemSusChem, EarlyView.Fe–N–Cs are a promising alternative to Pt‐based catalysts in high‐temperature polymer electrolyte membrane fuel cells; however, their catalyst layer design requires optimization. This study compares conventional oven drying and freeze‐drying for catalyst layer fabrication using the same catalyst. Different impacts on the morphology are revealed. Freeze‐
Tanja Zierdt +10 more
wiley +1 more source
ChemSusChem, EarlyView.Utilizing the power of the absorbance‐activated droplet sorter, a key enzyme for a cell‐free multienzymatic cascade for sustainable isobutanol biosynthesis is optimized for improved thermostability and isobutanol tolerance required for efficient cascade performance.
Mariko Teshima +6 more
wiley +1 more source
Stability in Aviation: an Introduction to Dynamical Stability as Applied to the Motion of Aeroplanes . By Professor G. H. Bryan, Sc.D., F.R.S. Macmillan and Co. 1911. Pp. xii+ 192. Price, $2.00. [PDF]
, 1912 W. J. Humphreys
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Retrospective studies of operating problems in air transport [PDF]
An epidemiological model for the study of human errors in aviation is presented. In this approach, retrospective data are used as the basis for formulation of hypotheses as to system factors which may have contributed to such errors.
Billings, C. E. +3 more
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