578 research outputs found
A Blockchain Framework for Preserving Music Intellectual Property Rights
The continuous strengthening of intellectual property protection has made the analysis of music intellectual property framework a research hotspot, and also promoted the integration of blockchain and intellectual property. The original IP protection framework could not solve the problem of music IP protection, and IP protection was ineffective. Therefore, this paper proposes a framework based on blockchain technology to analyze the protection of music intellectual property rights. Firstly, the blockchain server is used to store the music intellectual property rights, and the continuity judgment is made according to the characteristics of the intellectual property data to form the block data of the time series. Then, according to the intellectual property results stored in each server, the blockchain framework with different protection levels is compared with the intellectual property protection requirements. After simulation test and analysis, the framework based on blockchain technology can improve the security of music intellectual property data, reduce the tampering rate of property rights data, remove the centralization of intellectual property rights, and simplify the intellectual property protection process
Quantum Statistical Mechanics of Dissolving Vortices
The quantum partition function for dissolving Abelian Higgs vortices is
calculated explicitly, using spectral data for the Beltrami Laplacian on the
-vortex moduli space with a scaled Fubini--Study metric.
From the partition function, the pressure of the vortex gas is derived. There
are three asymptotic regimes -- High, Intermediate and Low Temperature. The
phase crossover from Intermediate to Low Temperature is modelled by a Bessel
function. In the Low Temperature regime the free energy is not extensive but is
proportional to .Comment: 12 pages, 7 figure
Show Me The Money, Sooner! How Faster Payments Boost Gig Workersā Efforts and Productivity
Despite their astounding growth in recent years, online gig platforms face key challenges to increase gig workers\u27 working commitment. In this study, we investigate how a higher payout frequency may stimulate workers\u27 commitment to work, improve the work quality, and engender heterogeneous impacts across different workers. Drawing on the expectancy theory and using detailed data from a multinational streaming platform, we explore a quasi-natural experiment. Leveraging an exogenous shock of a financial system upgrade, we employ the propensity score matching (PSM) technique with a difference-in-differences (DID) approach to demonstrate that a shorter payout cycle increased gig workers\u27 efforts at work. Moreover, a shorter payout cycle increased the quality of work. The positive impact was more pronounced for workers with a shorter tenure and for those who had a higher commitment to work before the treatment. Our results help gig platforms understand how to design payout schemes to motivate gig workers
Skin friction and heat transfer in hypersonic transitional and turbulent boundary layers
The decompositions of the skin-friction and heat transfer coefficients based
on the two-fold repeated integration in hypersonic transitional and turbulent
boundary layers are analyzed to explain the generations of the wall skin
friction and heat transfer. The Reynolds analogy factor slightly increases as
the wall temperature decreases, especially for the extremely cooled wall. The
integral analysis is applied to explain the overshoot behaviours of the
skin-friction and heat transfer coefficients in hypersonic transitional
boundary layers. The overshoot of the skin-friction coefficient is mainly
caused by the drastic change of the mean velocity profiles, and the overshoot
of the heat transfer coefficient is primarily due to the viscous dissipation.
In the hypersonic turbulent boundary layers, the skin-friction and heat
transfer coefficients increase significantly as the wall temperature decreases.
The effects of the mean velocity gradients and the Reynolds shear stress
contribute dominantly to the wall skin friction, and have weak correlations
with the wall temperature, except for the strongly cooled wall condition. The
strongly cooled wall condition and high Mach number can enhance the effect of
the Reynolds shear stress, and weaken the impact of the mean velocity
gradients. Furthermore, the magnitudes of the dominant relative contributions
of the mean temperature gradients, pressure dilatation, viscous dissipation and
the Reynolds heat flux to the heat transfer coefficient increase as the wall
temperature increases in the hypersonic turbulent boundary layers
Show Me The Money, Sooner! How Faster Payments Boost Gig Workers\u27 Efforts and Productivity
Despite their astounding growth in recent years, online gig platforms face key challenges to increase gig workers\u27 working commitment. This study aims to examine the impact of a fundamental organizational design element payout frequency, which refers to the intervals at which workers access the funds they have earned. Drawing on expectancy theory, we argue that a higher payout frequency enhances both the quantity and quality of gig work. To investigate this, we analyze proprietary data from a quasi-natural experiment that involved an unexpected reduction in the payout cycle for gig workers in a specific geographic region. By employing propensity score matching and a difference-in-differences approach, we demonstrate that a shorter payout cycle led to an increase in the effort among the impacted gig workers and also resulted in improved work quality. These findings contribute to our understanding of effectively motivating and managing gig workers, ultimately influencing customer engagement on platforms
Phase Transition in Extended Thermodynamics Triggers Sub-shocks
Extended thermodynamics commonly uses polynomial moments to model
non-equilibrium transportation, but faces a crisis due to sub-shocks, which are
anomalous discontinuities in gas properties when predicting shock waves. The
cause of sub-shocks is still unclear, challenging the validity of extended
thermodynamics. This paper reveals, for the first time, that sub-shocks arise
from intrinsic limitations of polynomials leading to a discontinuous phase
transition. Therefore extended thermodynamics necessitates alternative moments
beyond polynomials to avoid sub-shocks.Comment: 5 pages, 4 figure
Relay Selection Considering Successive Packets Transmission in Cooperative Communication Networks
Relay selection has been regarded as an effective method to improve the performance of cooperative communication system. However, frequent operation of relay selection can bring enormous control message overhead and thereby decrease the performance of cooperative communication. To reduce the relay selection frequency, in this paper, we propose a relay selection scheme to choose the best relay with considering successive packets transmission. In this scheme, according to the length of data packet, data transmission rate and the estimated channel state information (CSI), the best relay is selected to maximize the number of successive packets transmission under the condition that the given symbol-error-rate (SER) is kept. Finally, numerical results show that the proposed relay selection scheme can support the operation of successive packets transmission in cooperative wireless networks and that the maximum number of successive packets transmission is affected by the different network parameters, i.e., data transmission rate, packet length and Doppler frequency at one relay node
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