In this paper, development of a semi-two- dimensional mathematical model called SDAR is introduced. The model is composed of two principal modules of hydraulics and sediment transport. The newly developed SDAR model has a number of capabilities including determination of sediment transport rate, aggradation - degradation&#10calculation, longitudinal profile and lateral cross–sectional variation...

The problem on the radial structure of a steady acoustic streaming in a cylindrical tube closed at both ends was solved by Eckart in a linear hydrodynamic approximation [1]. Later, Soluyan and Rudenko [2] considered the nonstationary problem on the streaming formation. The streaming was induced by the radiation pressure caused in liquid by a circular ultrasonic beam of radius r 1 oriented along...

The Lighthill acoustic analogy indicates that substantial noise reduction is possible in high-speed jets by reducing the radiation efficiency. This entails reducing the convective Mach number of the eddies whose footprint is sensed in the near pressure field. In dualstream jets, local reduction in convective Mach number is possible by inducing asymmetry in the plume that redistributes the most ...

The surface velocity of a rapidly moving ice stream has been determined to high accuracy and spatial density with the use of sequential satellite imagery. Variations of ice velocity are spatially related to surface undulations, and transverse velocity variations of up to 30 percent occur. Such large variations negate the concept of plug flow and call into question earlier mass-balance calculati...

A cost-effective method was developed for the estimation of the bow velocity in violin playing, using an accelerometer on the bow in combination with point tracking using a standard video camera. The video data are used to detect the moments of bow direction changes. This information is used for piece-wise integration of the accelerometer signal, resulting in a drift-free reconstructed velocity...

Abstract Mass-transfer interactions in binary stars can lead to accretion disk formation, mass loss from the system and spin-up of accretor. To determine trajectory mass-transfer stream, whether it directly impacts accretor, or forms an disk, requires numerical simulations. The stream is approximately ballistic, analytic approximations based on such trajectories are used many population synthes...

Contrastive deep clustering has recently gained significant attention with its ability of joint contrastive learning and via neural networks. Despite the rapid progress, previous works mostly require both positive negative sample pairs for clustering, which rely on a relative large batch-size. Moreover, they typically adopt two-stream architecture two augmented views, overlook possibility poten...

Electronic Health Records (EHRs) consist of sparse, noisy, incomplete, heterogeneous and unevenly sampled clinical data of patients. They include physiological signals, lab test results, procedural events, clinical notes. Such data can be treated as a temporal stream of events of varied types occurring at irregularly spaced time points. We focus on modeling the temporal dependencies that arise ...

Since 2002, the GRACE satellite mission provides estimates of the Earth’s dynamic gravity field with unprecedented accuracy. Differences between monthly gravity fields contain a clear hydrological signal due to continental water storage changes. In order to evaluate GRACE results, the state-of-the-art WaterGAP Global Hydrological Model (WGHM) is applied to calculate terrestrial water storage ch...