Economic Integration and Structure Change in Stock Market Dependence: Empirical Evidences of CEPA

[[abstract]]This study investigates dependence structure changes between the Hong Kong and Chinese stock markets as a result of the Closer Economic Partnership Arrangement (CEPA). Four copulas, Gaussian, student t, Gumbel, and Clayton are used to search for unknown dependence structure changes. This study presents two main findings. First, the dependence between the Hong Kong and Chinese stock markets increased significantly following the structure change that occurred on February2, 2005, about one year after CEPA took effect. Second, the distribution of dependence structure altered from Gumbel copula before the structure change to t copula after the structure change. CEPA’s effects not only changed the dependence parameters but also changed the dependence structure’s distribution.[[notice]]補正完畢[[booktype]]紙本[[booktype]]電子

Experimental requirements for Grover's algorithm in optical quantum computation

The field of linear optical quantum computation (LOQC) will soon need a repertoire of experimental milestones. We make progress in this direction by describing several experiments based on Grover's algorithm. These experiments range from a relatively simple implementation using only a single non-scalable CNOT gate to the most complex, requiring two concatenated scalable CNOT gates, and thus form a useful set of early milestones for LOQC. We also give a complete description of basic LOQC using polarization-encoded qubits, making use of many simplifications to the original scheme of Knill, Laflamme, and Milburn.Comment: 9 pages, 8 figure

Soft Condensed Matter Physics

Soft condensed matter physics is the study of materials, such as fluids, liquid crystals, polymers, colloids, and emulsions, that are ``soft" to the touch. This article will review some properties, such as the dominance of entropy, that are unique to soft materials and some properties such as the interplay between broken-symmetry, dynamic mode structure, and topological defects that are common to all condensed matter systems but which are most easily studied in soft systems.Comment: 11 Pages, RevTeX, 7 postscript figures. To appear in Solid State Communication

Dynamics of orientational ordering in fluid membranes

We study the dynamics of orientational phase ordering in fluid membranes. Through numerical simulation we find an unusually slow coarsening of topological texture, which is limited by subdiffusive propagation of membrane curvature. The growth of the orientational correlation length $\xi$ obeys a power law $\xi \propto t^w$ with $w < 1/4$ in the late stage. We also discuss defect profiles and correlation patterns in terms of long-range interaction mediated by curvature elasticity.Comment: 5 pages, 3 figures (1 in color); Eq.(9) correcte

Interface and electronic characterization of thin epitaxial Co3O4 films

The interface and electronic structure of thin (~20-74 nm) Co3O4(110) epitaxial films grown by oxygen-assisted molecular beam epitaxy on MgAl2O4(110) single crystal substrates have been investigated by means of real and reciprocal space techniques. As-grown film surfaces are found to be relatively disordered and exhibit an oblique low energy electron diffraction (LEED) pattern associated with the O-rich CoO2 bulk termination of the (110) surface. Interface and bulk film structure are found to improve significantly with post-growth annealing at 820 K in air and display sharp rectangular LEED patterns, suggesting a surface stoichiometry of the alternative Co2O2 bulk termination of the (110) surface. Non-contact atomic force microscopy demonstrates the presence of wide terraces separated by atomic steps in the annealed films that are not present in the as-grown structures; the step height of ~ 2.7 A corresponds to two atomic layers and confirms a single termination for the annealed films, consistent with the LEED results. A model of the (1 * 1) surfaces that allows for compensation of the polar surfaces is presented.Comment: 8 pages, 7 figure

Systematic Review of Medicine-Related Problems in Adult Patients with Atrial Fibrillation on Direct Oral Anticoagulants

New oral anticoagulant agents continue to emerge on the market and their safety requires assessment to provide evidence of their suitability for clinical use. There-fore, we searched standard databases to summarize the English language literature on medicine-related problems (MRPs) of direct oral anticoagulants DOACs (dabigtran, rivaroxban, apixban, and edoxban) in the treatment of adults with atri-al fibrillation. Electronic databases including Medline, Embase, International Pharmaceutical Abstract (IPA), Scopus, CINAHL, the Web of Science and Cochrane were searched from 2008 through 2016 for original articles. Studies pub-lished in English reporting MRPs of DOACs in adult patients with AF were in-cluded. Seventeen studies were identified using standardized protocols, and two reviewers serially abstracted data from each article. Most articles were inconclusive on major safety end points including major bleeding. Data on major safety end points were combined with efficacy. Most studies inconsistently reported adverse drug reactions and not adverse events or medication error, and no definitions were consistent across studies. Some harmful drug effects were not assessed in studies and may have been overlooked. Little evidence is provided on MRPs of DOACs in patients with AF and, therefore, further studies are needed to establish the safety of DOACs in real-life clinical practice

SCM-36 zeolite nanosheets applied in the production of renewable p-xylene from ethylene and 2,5-dimethylfuran

Zeolites as solid acid materials have played important roles in industrial catalysis. The attempts to obtain new zeolite framework structures and related chemical compositions have never stopped, and may expand the application thereof. Using renewable bioderived molecules as starting feedstocks would be of great help in building a more circular carbon cycle. However, zeolites have only shown limited efficiency in the conversion or production of bioderived chemicals. In this work, we report on the synthesis of a new aluminosilicate zeolite named SCM-36 (Sinopec Composite Material No. 36) using tetramethylammonium hydroxide (TMAOH) with the presence of hexadecylpyridinium bromide hydrate (C16PyBr) or octyltrimethylammonium chloride (OTMAC). The pore opening of this new zeolite material is about 0.6 nm, which is consistent with the size of 10 to 12 membered ring channel. SCM-36 possesses a nanoflower-like morphology with a thickness of ~20 nm. The SiO2/Al2O3 molar ratio of the SCM-36 material is ranging from 21.2 to 36.6, with most Al incorporated into the zeolite framework structure. The acid strength of SCM-36 is not strong, as confirmed by various techniques, including NH3-TPD, pyridine FT-IR, ex-situ confocal fluorescence microscopy and in-situ UV-Vis micro-spectroscopy. In the catalytic conversion of bio-derived 2,5-dimethylfuran (DMF) and ethylene into para-xylene (PX), H-SCM-36 zeolite showed better performance than the more traditional zeolites. The highest selectivity towards PX reached a value of ~93%. Besides, SCM-36 zeolite showed remarkable recyclability in the reaction

Perturbative Approach to Higher Derivative Theories with Fermions

We extend the perturbative approach developed in an earlier work to deal with Lagrangians which have arbitrary higher order time derivative terms for both bosons and fermions. This approach enables us to find an effective Lagrangian with only first time derivatives order by order in the coupling constant. As in the pure bosonic case, to the first order, the quantized Hamiltonian is bounded from below whenever the potential is. We show in the example of a single complex fermion that higher derivative interactions result in an effective mass and change of vacuum for the low energy modes. The supersymmetric noncommutative Wess-Zumino model is considered as another example. We also comment on the higher derivative terms in Witten's string field theory and the effectiveness of level truncation.Comment: Latex, 21 pages, minor modification, ref. adde