101 research outputs found
サンネンカンノジュウダンケンキュウニヨルコウレイシャノコウゴウリョクトニンチキノウテイカトノカンケイ
No full textKodai Hatta, Yasuyuki Gondo, Kei Kamide, Yukie Masui, Hiroki Inagaki, Takeshi Nakagawa, Ken-ichi Matsuda, Chisato Inomata, Hajime Takeshita, Yusuke Mihara, Motoyoshi Fukutake, Masahiro Kitamura, Shinya Murakami, Mai Kabayama, Tatsuro Ishizaki, Yasumichi Arai, Ken Sugimoto, Hiromi Rakugi, Yoshinobu Maeda, Kazunori Ikebe, Occlusal force predicted cognitive decline among 70- and 80-year-old Japanese: A 3-year prospective cohort study, Journal of Prosthodontic Research 64(2), 175-181, 2020, https://doi.org/10.1016/j.jpor.2019.07.002
Unilateral tariff liberalisation
No full textUnilateral tariff liberalisation by developing nations is pervasive but our understanding of it is shallow. This paper strives to partly redress this lacuna on the theory side by introducing three novel political economy mechanisms with particular emphasis is on the role of production unbundling. One mechanism studies how lowering frictional barriers to imported parts can destroy the correlation of interests between parts producers and their downstream customers. A second mechanism studies how Kojima’s pro-trade FDI raises the political economy cost of maintaining high upstream barriers. The third works via a general equilibrium channel whereby developing country’s participation in the supply chains of advanced-nation industries undermines their own competitiveness in final goods, thus making final good protection more politically costly. In essence, developing nations’ pursuit of the export-processing industrialisation undermines their infant-industry industrialisation strategies.unilateral tariff liberalisation, race-to-the-bottom, political economy
Unilateral Tariff Liberalisation
No full textUnilateral tariff liberalisation by developing nations is pervasive but our understanding of it is shallow. This paper strives to partly redress this lacuna on the theory side by introducing three novel political economy mechanisms with particular emphasis is on the role of production unbundling. One mechanism studies how lowering frictional barriers to imported parts can destroy the correlation of interests between parts producers and their downstream customers. A second mechanism studies how Kojima’s pro-trade FDI raises the political economy cost of maintaining high upstream barriers. The third works via a general equilibrium channel whereby developing country’s participation in the supply chains of advanced-nation industries undermines their own competitiveness in final goods, thus making final good protection more politically costly. In essence, developing nations’ pursuit of the export-processing industrialisation undermines their infant-industry industrialisation strategies.
Quantum dynamics of a driven three-level Josephson-atom maser
No full textRecently, a lasing effect has been observed in a superconducting nanocircuit where a Cooper-pair box, acting as an artificial three-level atom, was coupled to a resonator [O. Astafiev, K. Inomata, A. O. Niskanen, T. Yamamoto, Yu. A. Pashkin, Y. Nakamura, and J. S. Tsai, Nature (London) 449, 588 (2007)]. Motivated by this experiment, we analyze the quantum dynamics of a three-level atom coupled to a quantum-mechanical resonator in the presence of a driving on the cavity within the framework of the Lindblad master equation. As a result, we have access to the dynamics of the atomic level populations and the photon number in the cavity as well as to the output spectrum. The results of our quantum approach agree with the experimental findings. The presence of a fluctuator in the circuit is also analyzed. Finally, we compare our results with those obtained within a semiclassical approximation.QN/Quantum NanoscienceApplied Science
Path integral on S2: the rosen-morse oscillator
No full textGuided by the group chain SO(3) 3 0(2), we construct an angular path integral
for the symmetric Rosen-Morse oscillator on S2. By explicit path integration, we obtain
the normalised energy eigenfunction as well as the exact energy spectrumCorresponding Author:
Dr. Mohammad Kayed
Physics Department, College of Science and Humanitarian Studies at Al-Kharj, King Saud University, P.O. Box 83, Al-Kharj, Saudi Arabia 11942. Email: [email protected]
Globalization in an Age of Crisis: Multilateral Economic Cooperation in the Twenty-First Century
No full textAn Ir/WO3 catalyst for selective reduction of NO with CO in the presence of O2 and/or SO2
No full textThe catalytic performance of Ir/WO3 catalyst has been studied in the reduction of NO with CO in the presence of O2 and/or SO2. The catalyst was active for the selective reduction of NO to N2 without foreign gases. The conversion of NO to N2 was further enhanced by the addition of a small amount of O2 while that to N2O was reduced. The N2 conversion went through a maximum, which depended on the composition of the reacting gaseous mixture (NO and CO). The catalyst was still active at higher O2 concentrations up to 5%, so this Ir/WO3 catalyst can be used effectively under lean-burn conditions. The presence of SO2 (100 ppm) caused a significant deactivation but this negative effect was completely removed by co-existing O2. The reaction mechanisms and the effects of co-existing O2 and SO2 gases are discussed on the bases of those reaction results, those of the reduction of NO2 instead of NO, and FTIR measurements of the catalysts after the reactions under various conditions. Possible reaction pathways are proposed, which depend on the concentration of O2 added in the reaction mixture
Direct observation of new particle formation during ozonolysis of isoprene and ethene competing against the growth of preexisting particles
No full textPath integral quantization of the symmetric poschl-teller potential
No full textFeynman's path integral approach to quantum mechanics [I] is expected to be an alternative to Schrodinger's.
Nevertheless, a limited number of problems have been solved exactly by path integration. It is a surprizing fact
that such a typical example as the hydrogen atom has been left unsolved until very recently [2-41. Because of its
gaussian (fresnellian) nature, the functional integral if represented in cartesian variables can be evaluated only for
quadratic potentials [5]. Use of polar coordinates has helped to relax this limitation [6], placing the Infeld-Hull
potential V= ar2 + br-* in the list of path-integable examples. However, the change of variables in path integrals
is not trikial and the result is seldom beneficial to calculations. In recent years, some useful techniques have been
devised, so that coordinate transformations are more effectively utilized to carry out path integration for the
Aharonov-Bohm effect [7], the hydrogen atom [2,3], the Morse oscillator [8], the Dirac-Coulomb problem [4]
and the charge-monopole system [9]. Now we are generally able to evaluate a path integral if it is intrinsically reducible
in the local limit to a confluent hypergeometric equation of the Infeld-Hull type. It is interesting that
this situation is parallel to that of the Sq2.1) dynarnical group approach [lo,) 11.Corresponding Author:
Dr. Mohammad Kayed
Physics Department, College of Science & Humanitarian Studies at Al-Kharj, King Saud University, P.O.Box 83, Al-Kharj 11942, Saudi Arabia. Email: [email protected]
Functional Improvement of Nanoimprinted Photooxidative Cell Membrane Perforator for Mass Cell Processing
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