3,967 research outputs found

    Spillover effects of FDI inflows on the banking industry in China.

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    The study examines the magnitude of economic spillover and the impact of foreign direct investment (FDI) inflow on the efficiency of the bank management in China This study examines direct and indirect spillover in the short-run and their economic spillover in the long-run. Unit root tests, cointegration tests, vector error correction models, and Wald tests are employed in the empirical analysis using monthly time series data from January 2002 to September 2013 retrieved from the Bank of China database. In testing long-run economic spillover, this study finds that FDI inflows have a significant economic spillover, but the spillover is likely to be negative. In testing short-run economic spillover, this research finds that FDI inflows have a significant positive direct effect on the efficiency of the bank management in Chain

    Investigating health related fitness level among down syndrome in Kelantan

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    Down syndrome (DS) is a category of intellectual disabilities which is associated with abnormalities in chromosome 21. Individuals with DS have lower physical fitness levels compared to their typical peers. Furthermore, research also states that their level of physical fitness are generally lower than individuals with intellectual disabilities from other categories. The low level of physical fitness may affect their health and may negative affect their quality of life. This study was conducted to investigate the fitness level among Down syndrome in Kelantan. There were 16 Down syndrome participants from Community Based Rehabilititation (CBR) and Kelantan Down Syndrome Association (PSDNK) participated in this study. The physical fitness levels such as body mass index, body fat percentage, Rockport 1-mile walking test, sit-up test, curl up test, hand grip test as well as sit-and-reach test have been conducted. The study found that the health related physical fitness levels of DS was low, conversely, the body mass index and body fat percentage are high. These findings indicating that the health related fitness of DS in this study are not healthy. Therefore, it is imperative for the DS to actively participate in physical activities in order to reduce the risk of having non-communicable diseases (NCD) such as diabetes, hypertension or heart diseases

    Imprints of Schwinger Effect on Primordial Spectra

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    We study the Schwinger effect during inflation and its imprints on the primordial power spectrum and bispectrum. The produced charged particles by Schwinger effect during inflation can leave a unique angular dependence on the primordial spectra.Comment: 27 pages, 13 figures, JHEP accepted versio

    Quantum information processing architecture with endohedral fullerenes in a carbon nanotube

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    A potential quantum information processor is proposed using a fullerene peapod, i.e., an array of the endohedral fullerenes 15N@C60 or 31P@C60 contained in a single walled carbon nanotube (SWCNT). The qubits are encoded in the nuclear spins of the doped atoms, while the electronic spins are used for initialization and readout, as well as for two-qubit operations.Comment: 8 pages, 8 figure

    Black hole wavefunctions and microcanonical states

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    We consider the problem of defining a microcanonical thermofield double state at fixed energy and angular momentum from the gravitational path integral. A semiclassical approximation to this state is obtained by imposing a mixed boundary condition on an initial time surface. We analyze the corresponding boundary value problem and gravitational action. The overlap of this state with the canonical thermofield double state, which is interpreted as the Hartle-Hawking wavefunction of an eternal black hole in a mini-superspace approximation, is calculated semiclassically. The relevant saddlepoint is a higher-dimensional, rotating generalization of the wedge geometry that has been studied in two-dimensional gravity.Comment: 20 page

    Hartle-Hawking state and its factorization in 3d gravity

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    We study 3d quantum gravity with two asymptotically anti-de Sitter regions, in particular, using its relation with coupled Alekseev-Shatashvili theories and Liouville theory. Expressions for the Hartle-Hawking state, thermal 2n2n-point functions, torus wormhole correlators and Wheeler-DeWitt wavefunctions in different bases are obtained using the ZZ boundary states in Liouville theory. Exact results in 2d Jackiw-Teitelboim (JT) gravity are uplifted to 3d gravity, with two copies of Liouville theory in 3d gravity playing a similar role as Schwarzian theory in JT gravity. The connection between 3d gravity and the Liouville ZZ boundary states are manifested by viewing BTZ black holes as Maldacena-Maoz wormholes, with the two wormhole boundaries glued along the ZZ boundaries. In this work, we also study the factorization problem of the Hartle-Hawking state in 3d gravity. With the relevant defect operator that imposes the necessary topological constraint for contractibility, the trace formula in gravity is modified in computing the entanglement entropy. This trace matches with the one from von Neumann algebra considerations, further reproducing the Bekenstein-Hawking area formula from entanglement entropy. Lastly, we propose a calculation for off-shell geometrical quantities that are responsible for the ramp behavior in the late time two-point functions, which follows from the understanding of the Liouville FZZT boundary states in the context of 3d gravity, and the identification between Verlinde loop operators in Liouville theory and "baby universe" operators in 3d gravity.Comment: 71 pages+appendices, 33 figures (v2: Correction to Section 6.1, figures added, typos fixed, size of figures compressed, references added.

    Nuclear-nuclear interaction mediated by a mechanically controlled nitrogen-vacancy-center spin in diamond

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    We propose a scheme to achieve nuclear-nuclear indirect interactions mediated by a mechanically driven nitrogen-vacancy (NV) center in diamond. Here we demonstrate two-qubit entangling gates and quantum-state transfer between two carbon nuclei in diamond. In such a system, the NV center interacts with a nearby nuclear spin via a dipole-dipole interaction. Under the quantum Zeno condition, the scheme is robust against decoherence caused by coupling between the NV center (nuclear spins) and the environment. Conveniently, precise control of dipole coupling is not required so this scheme is insensitive to fluctuating positions of the nuclear spins and the NV center. Our scheme provides a general blueprint for multi-nuclear-spin gates and for multi-party communication in a polygon geometry with each vertex occupied by a nuclear spin.Comment: 11 pages, 8 figure
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