2025年1月22日 · To address these limitations, this study proposes a semi-supervised jet stream axis extraction method leveraging an enhanced U-Net++ model. The approach incorporates improved residual blocks and enhanced attention gate mechanisms, seamlessly integrating these enhanced attention gates into the dense skip connections of U-Net++.

2017年6月1日 · Overall, our results show that jet axis distributions offer a valuable measure of mean jet position and variability, where a tight jet axis distribution indicates a persistence or sequence of similar transient weather events. A diffuse jet axis distribution, on the other hand, characterizes periods without a dominant synoptic pattern.

2025年2月18日 · The jet axis decorrelation in inclusive jets is studied using lead-lead (PbPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The jet axis decorrelation is defined as the angular difference between two definitions of the jet axis.

2019年11月15日 · We study the angle between i) the standard jet axis, ii) the axis of a jet which has been groomed using soft drop, with reduced sensitivity to soft radiation, iii) the jet axis obtained with the winner-take-all recombination scheme, which is …

Normal axis, or yaw axis — an axis drawn from top to bottom, and perpendicular to the other two axes, parallel to the fuselage or frame station. Transverse axis, lateral axis, or pitch axis — an axis running from the pilot's left to right in piloted aircraft, and parallel to the wings of a winged aircraft, parallel to the buttock line.

2022年11月16日 · The jet axis, before and after Soft Drop grooming, is compared to the jet axis from the Winner-Takes-All (WTA) recombination scheme. The angle between these axes, $\Delta R_{\mathrm{axis}}$, probes a wide phase space of the jet formation and evolution, ranging from the initial high-momentum-transfer scattering to the hadronization process.

2024年8月1日 · Jet axis switching occurs in high aspect ratio aerosol jets. We examine the effect of jet axis switching on deposition patterns of particles. Axis switching and aerodynamic focusing lead to size-dependent deposition patterns.

2016年6月6日 · The upper level jet is a narrow stream located from the upper troposphere to lower stratosphere, characterized by high wind speeds and large vertical and horizontal wind shears. In East Asia, the intensity of the time-mean wind gradually decreases from the westerly jet axis to the polar-front region.

2018年7月11日 · The test result shows that the jet axis, which is automatically drawn, has the characteristics of accurate position and natural shape. Besides, it could reflect the transport path of water vapor in jet, and adapt to the complex environment of low-level jet.

Jetstreams are intense, narrow quasi-horizontal currents of wind associated with strong vertical shear and found at or near the tropopause. A jetstream is defined by the following attributes: A jet streak is a wind speed maximum embedded within a jet stream, like the one seen below.