This study investigates risk spillover among six factors in the Chinese stock market from factor-specific perspective, both static and dynamic analyses. Meanwhile, we examine which economic policy uncertainty (EPU) is driving force effect. The findings reveal that: (1) Profitability (RMW) emerges as a net transmitter of risk, while factor (MKT) acts receiver. (2) Risk spillovers are time-varying, intensifying during extreme events. For example, 2015 crash reverses roles RMW HML due to change...

Abstract The geometric parameters of labyrinth channels play an important role in the hydraulic and anti‐clogging performance drip emitters. In this study , flow fields, individual representative sands sand groups channel emitters, with dentation angles 90°, 60°, 45° 30°, were firstly simulated using a computational fluid dynamics discrete element method (CFD–DEM) coupling. Particle tracking velocimetry (PTV) was used to trace sands. numerical results verified clear water tests muddy tests....

Flow dynamics associated with a laminar circular jet impinging upon convex cylinder has been investigated by laser-induced fluorescence and digital particle-image velocimetry techniques. Cylinder-to-jet diameter ratios of 1, 2, 4 were investigated, while the jet-to-cylinder separation distance was kept at four diameters throughout. visualization λ2 criterion results show that once ring-vortices impinge cylindrical surface, they move away from impingement point wrapping themselves partially...

Abstract

Small but complicated labyrinth channel emitters are easily clogged. In this study, computational fluid dynamics–discrete element method coupling approach was employed to investigate the mechanism of emitter clogging caused by particles in size 65, 100, and 150 µm. Computational dynamics used Navier–Stokes equation analyze flow characteristics continuous phase. Discrete Newton’s laws motion measure single particle group distribution disperse Particle tracking velocimetry also utilized follow...

Abstract This study employs minimum spanning tree and generalized forecast error variance decomposition methods to investigate the connectedness risk spillovers across China's commodity sectors from January 2016 December 2021. The results show that total within system is time varying. Chemical main driver, while other occasionally dominate system. These two achieve consistent in identifying systemically important sector dynamic connectedness. In addition, we find Chinese economic policy...

Abstract The price discovery in finance markets has been the focus of many researches. On basis 1‐min high‐frequency returns, this paper sets out to examine dynamics between China Securities Index 300 index and its derivative products: futures, exchange‐traded fund (ETF), ETF options. Nonparametric nonlinear method thermal optimal path is adopted study. empirical evidence shows a clear difference ability concerning three products under investigation, their rank (sorted by strength) can be...

An experimental study was conducted on head-on collisions of Re = 2000 and 4000 vortex rings upon air–water interfaces to the dynamics effects different ring Reynolds numbers key flow mechanisms. Unfiltered tap water used where surface contaminants were present; hence, interfacial stress levels are lower but not entirely zero like an idealized free surface. Results demonstrate that involve first, resulting secondary tertiary transitioning into wavy states, before their upper loops...

In line with the safety management requirements for vehicles transporting dangerous goods, a variety of sensors targeting vehicle posture, acceleration, temperature, and more were selectively utilized to construct wireless sensor monitoring network through detection, Beidou satellite positioning, remote communication technologies. This processes integrates signals from multiple perform real-time detection status goods on their journey. Detected hazardous states are transmitted control center...

The influence of low to moderate Reynolds number and turbulence level on aerodynamic losses is investigated in an incidence tolerant turbine blade cascade for a variable speed power turbine. This work complements midspan heat transfer loading measurements which are acquired the same at conditions. loss quantify buckets over wide range angles Eight discrete ranging from +5.8° −51.2°. Noting that design inlet angle 34.2° these correspond +40° −17°. Exit surveys, presented terms local total...

In this work, an online optical system for the parameters measurement of gas-liquid Taylor flow in a 4.0mm-inner-diameter small channel was developed. The presented method able to measure bubble velocity, frequency, and slug lengths, determine void fraction channels. A homogeneous model introduced simplify analysis parameter calculation flow. Experimental results showed that effective well applied or monitoring relative error measured velocity were less than ±5% ±10%, respectively.

This article investigates the impact of systematic extreme correlations on cross-section returns in Chinese stock market. First, it extends proposed downside correlation (EDC) to upside (EUC), and employs them measure tail risk. We find asymmetry that EDC is always greater than EUC Then, we calculate average portfolios sorted by measures have a negative relationship with returns. After controlling other potential variables such as size, lagged return, higher moments co-moments, these two...

This article employs the QVAR model to investigate return spillovers of China’s commodity sectors. Our results show that total connectedness in extreme markets is significantly higher and increases as size shock increases. Livestock has changed from a risk contributor recipient due low or even negative tail correlation markets. These findings can help prevent systemic risks for policymakers re-optimize portfolios reduce losses investors