1,911 research outputs found
Cognitive Aspects of Relative Clause Production In Oral and Written Narratives
The present study aims to investigate relative clause production in Chinese and English from a cognitivefunction approach that explores underlying cognitive, semantic, and discourse-pragmatic factors operative in discourse processing. With this approach we are able to account for both general and specific distributional patterns of RCs between the two languages on the one hand and between speech and writing on the other, using narrative data elicited from native speakers of both languages
Learned Quality Enhancement via Multi-Frame Priors for HEVC Compliant Low-Delay Applications
Networked video applications, e.g., video conferencing, often suffer from
poor visual quality due to unexpected network fluctuation and limited
bandwidth. In this paper, we have developed a Quality Enhancement Network
(QENet) to reduce the video compression artifacts, leveraging the spatial and
temporal priors generated by respective multi-scale convolutions spatially and
warped temporal predictions in a recurrent fashion temporally. We have
integrated this QENet as a standard-alone post-processing subsystem to the High
Efficiency Video Coding (HEVC) compliant decoder. Experimental results show
that our QENet demonstrates the state-of-the-art performance against default
in-loop filters in HEVC and other deep learning based methods with noticeable
objective gains in Peak-Signal-to-Noise Ratio (PSNR) and subjective gains
visually
Itinerant chiral ferromagnetism in a trapped Rashba spin-orbit coupled Fermi gas
How ferromagnetic phases emerge in itinerant systems is an outstanding
problem in quantum magnetism. Here we consider a repulsive two-component Fermi
gas confined in a two dimensional isotropic harmonic potential and subject to a
large Rashba spin-orbit (SO) coupling, whose single-particle dispersion can be
tailored by adjusting the SO coupling strength. We show that the interplay
among SO coupling, correlation effects and mean-field repulsion leads to a
competition between ferromagnetic and non-magnetic phases. At intermediate
interaction strengths, ferromagnetic phase emerges which can be well described
by the mean-field Hartree-Fock theory; whereas at strong interaction strengths,
a strongly correlated non-magnetic phase is favored due to the
beyond-mean-field quantum correlation effects. Furthermore, the ferromagnetic
phase of this system possesses a chiral current density induced by the Rashba
spin-orbit coupling, whose experimental signature is investigated.Comment: Main text: 5 pages, 6 figures; Supplement: 4 pages, 2 figure
Target shape effects on monoenergetic GeV proton acceleration
When a circularly polarized laser pulse interacts with a foil target, there
are three stages: pre-hole-boring, hole-boring and the light sail acceleration.
We study the electron and ion dynamics in the first stage and find the minimum
foil thickness requirement for a given laser intensity. Based on this analysis,
we propose to use a shaped foil for ion acceleration, whose thickness varies
transversely to match the laser intensity. Then, the target evolves into three
regions: the acceleration, transparency and deformation regions. In the
acceleration region, the target can be uniformly accelerated producing a
mono-energetic and spatially collimated ion beam. Detailed numerical
simulations are performed to check the feasibility and robustness of this
scheme, such as the influence of shape factors and surface roughness. A GeV
mono-energetic proton beam is observed in the three dimensional
particle-in-cell simulations when a laser pulse with the focus intensity of
1022W=cm2 is used. The energy conversion efficiency of laser pulse to
accelerated proton beam is more than 23%. Synchrotron radiation and damping
effects are also checked in the interaction.Comment: 11 pages, 9 figure
Leveraging Open-standard Interorganizational Information Systems for Process Adaptability and Alignment: An Empirical Analysis
PurposeThe purpose of this paper is to understand the value creation mechanisms of open-standard inter-organizational information system (OSIOS), which is a key technology to achieve Industry 4.0. Specifically, this study investigates how the internal assimilation and external diffusion of OSIOS help manufactures facilitate process adaptability and alignment in supply chain network.Design/methodology/approachA survey instrument was designed and administrated to collect data for this research. Using three-stage least squares estimation, the authors empirically tested a number of hypothesized relationships based on a sample of 308 manufacturing firms in China.FindingsThe results of the study show that OSIOS can perform as value creation mechanisms to enable process adaptability and alignment. In addition, the impact of OSIOS internal assimilation is inversely U-shaped where the positive effect on process adaptability will become negative after an extremum point is reached.Originality/valueThis study contributes to the existing literature by providing insights on how OSIOS can improve supply chain integration and thus promote the achievement of industry 4.0. By revealing a U-shaped relationship between OSIOS assimilation and process adaptability, this study fills previous research gap by advancing the understanding on the value creation mechanisms of information systems deployment
Topic Continuity in Written Mandarin Discourse
Proceedings of the Fifteenth Annual Meeting of the Berkeley Linguistics
Society (1989), pp. 256-26
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