نتایج جستجو برای: aero
تعداد نتایج: 2125 فیلتر نتایج به سال:
This paper provides a novel contribution for specifying the role of demand for technological competition. The focus is on the analysis of the mechanisms of technological learning and spillovers occurring in different structures of networks of vertically-related industries. The paper offers a detailed and original empirical analysis of technological competition among suppliers and structure of t...
Aero-optics disturbances were measured inight with the Airborne Aero-Optics Laboratory (AAOL) 1 ft (4 in. clear aperture) at-windowed turret at an altitude of 15 kft altitude and at a Mach number of 0.5 for 47 az., 42 el. (forward-looking) and 139 az., 70 el. (rearlooking) turret angles. Wavefronts were collected using a FasCam CCD array camera with an AMO lenslet array in a Shack-Hartman con g...
Each gas molecule has its own molecular weight, while such a microscopic characteristic is generally inaccessible, and thus, it is measured indirectly through e.g. ionization in conventional mass analysis. Here, we present a novel approach to the direct measurement of molecular weight through a nanoarchitectonic combination of aerodynamics, thermodynamics, and mechanics, transducing microscopic...
Standard form of authenticated encryption (AE) requires the ciphertext to be expanded by the nonce and the authentication tag. These expansions can be problematic when messages are relatively short and communication cost is high. To overcome the problem we propose a new form of AE scheme, MiniAE, which expands the ciphertext only by the single variable integrating nonce and tag. An important fe...
The animation system AERO is presented in this paper. It allows the creation of virtual environments from scenes with simple three-dimensional geometrical objects (sphere, cylinder, box, point, plane). Objects can be linked to each other by a variety of methods (rod, spring, damper, joint). Realistic object movements are achieved by a simulation procedure, where forces can be applied to the obj...
Performance of adaptive optics (AO) compensation for beam control is quantified via wave-optical propagation, sensing, and control methods using wind tunnel measurements of aero-optical disturbances in addition to Kolmogorov turbulence distributed over a laser path. For Kolmogorov turbulence the residual phase variance scales as (fG/f3dB) , where fG is the Greenwood frequency for the propagatio...
Folate has been hypothesized to protect against aero-digestive cancers although the evidence is not yet conclusive due to possible confounding by other dietary factors. Sequence variants in folate pathway were suggested to be associated with plasma folate levels and are unlikely to be confounded by other lifestyle factors. We therefore investigated the effects of key folate genetic variants on ...
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