نتایج جستجو برای: like wings
تعداد نتایج: 659056 فیلتر نتایج به سال:
Abstract The Weighted Influence Nonlinear Measurement System (WINGS) method originates from DEMATEL, which has the advantage of analyzing interweaved determinants and causal relationships within them. innovation is mainly reflected in considering both strength influencing factors themselves relationship their mutual influence. To address problems ambiguity assessing information uncertainty judg...
After spending two postdoctoral years each in the laboratories of Jun-ichi Tomizawa in Tokyo and Dick Epstein in Geneva, David Shub joined the faculty of the Biology Department at the University at Albany, SUNY, where he has been ever since. For the past 17 years his lab has explored the self-splicing group I introns in bacteria and phages, with emphasis on their origin, distribution, and funct...
The paper presents work on testing of inflatable wings for unmanned aerial vehicles (UAVs). Inflatable wing history and recent research is discussed. Design and construction of inflatable wings is then covered, along with ground and flight testing. Discussions include predictions and correlations of the forces required to warp (twist) the wings to a particular shape and the aerodynamic forces g...
SPHINCS is a recently proposed stateless hash-based signature scheme and promising candidate for a post-quantum secure digital signature scheme. In this work we provide a comparison of the performance when instantiating SPHINCS with different cryptographic hash functions on both recent Intel and AMD platforms found in personal computers and the ARMv8-A platform which is prevalent in mobile phon...
In this study, the aerodynamic performance of flapping wings using a parallel motion was investigated and compared with insect-like “fan-sweep” motion, effect adding slit to analyzed. First, numerical simulations were performed analyze wing aerodynamics two motions equivalent stroke amplitudes over range pitching angles based on computational fluid dynamics (CFD). The simulation results indicat...
After heavy rainfalls in late Apr. of 2010 in Tehran, an epizootic occurred amongst hoverflies (Eupeodes corollae Fabricius) population in green spaces of Iranian Research Institute of Plant Protection, caused by an entomopathogenic fungus. Infected flies fixed to the upper parts of whitetop (Lepidium draba L.) and small tumbleweed mustard (Sisymbrium loeslii L.) plants with their proboscis and...
The flexibility of insect wings confers aerodynamic benefits, but can also present a hazard if exposed to fog or dew. Fog can cause water to accumulate on wings, bending them into tight taco shapes and rendering them useless for flight. In this combined experimental and theoretical study, we use high-speed video to film the spontaneous folding of isolated mosquito wings due to the evaporation o...
We tested the hypothesis that relatively symmetrical flies live longer. Vein measurements on the left and right wings from the same individual were used to characterize bilateral symmetry in relationship to age-specific survival in defined cohorts. A longitudinal cohort study supported the hypothesis of a correlation between bilateral symmetry and longevity. For another type of experiment, wing...
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