4,447 research outputs found
Reliving the \u2780s: Nostalgic implementation of the \u2780s pop music in the media
The major focus of this thesis is the examination of the ways in which the American television, radio, and the music industry in particular are attempting to cater to the interests and demands of the resurgence of the 1980s popular music in the current decade; The current popularity of the 1980s pop music not only reflects the demographics of the audience but also the producers and executives in the media, including television, radio stations, and record companies. The phenomenon is one in which the media professionals and audience engage and re-emerge themselves in the nostalgia of their generation; To examine the re-emergence of the \u2780s pop music in the media today, a taxonomy on the notable \u2780s music-related media contents will be developed. This taxonomy helps illustrate how the various culture industries\u27 increasingly systematic attempts to revive the 1980s in the current decade affect the development, production, marketing, and the aesthetic form of the 1980s pop music
Orbital selective Fermi surface shifts and mechanism of high T superconductivity in correlated AFeAs (A=Li,Na)
Based on the dynamical mean field theory (DMFT) and angle resolved
photoemission spectroscopy (ARPES), we have investigated the mechanism of high
superconductivity in stoichiometric LiFeAs. The calculated spectrum is in
excellent agreement with the observed ARPES measurement. The Fermi surface (FS)
nesting, which is predicted in the conventional density functional theory
method, is suppressed due to the orbital-dependent correlation effect with the
DMFT method. We have shown that such marginal breakdown of the FS nesting is an
essential condition to the spin-fluctuation mediated superconductivity, while
the good FS nesting in NaFeAs induces a spin density wave ground state. Our
results indicate that fully charge self-consistent description of the
correlation effect is crucial in the description of the FS nesting-driven
instabilities.Comment: 5 pages, 4 figures, supporting informatio
Bounds on gravitational brane couplings and tomography in AdS3 black hole microstates
We study information theoretic properties of planar black hole microstates in
2 + 1 dimensional asymptotically anti-de Sitter spacetime, modeled by black
holes with an end-of-the-world brane behind the horizon. The von Neumann
entropy of sufficiently large subregions in the dual CFT exhibits a
time-dependent phase, which from a doubly-holographic perspective corresponds
to the appearance of quantum extremal islands in the brane description.
Considering the case where dilaton gravity is added to the brane, we show that
tuning the associated couplings affects the propagation of information in the
dual CFT state. By requiring that information theoretic bounds on the growth of
entanglement entropy are satisfied in the dual CFT, we can place bounds on the
allowed values of the couplings on the brane. Furthermore, we initiate the
study of brane tomography, by showing how subleading corrections to the
entanglement velocity can be used to learn about the properties of the brane as
well as any gravitational dynamics localized on it.Comment: 39 pages, plenty of figures; v2: references adde
Investigation of the SH3BP2 Gene Mutation in Cherubism
Cherubism is a rare developmental lesion of the jaw that is generally inherited as an autosomal dominant trait. Recent studies have revealed point mutations in the SH3BP2 gene in cherubism patients. In this study, we examined a 6-year-old Korean boy and his family. We found a Pro418Arg mutation in the SH3BP2 gene of the patient and his mother. A father and his 30-month-old younger brother had no mutations. Immunohistochemically, the multinucleated giant cells proved positive for CD68 and tartrate-resistant acid phosphatase (TRAP). Numerous spindle-shaped stromal cells expressed a ligand for receptor activator of nuclear factor kB (RANKL), but not in multinucleated giant cells. These results provide evidence that RANKL plays a critical role in the differentiation of osteoclast precursor cells to multinucleated giant cells in cherubism. Additionally, genetic analysis may be a useful method for differentiation of cherubism.</p
The First Room-Temperature Ambient-Pressure Superconductor
For the first time in the world, we succeeded in synthesizing the
room-temperature superconductor ( K, 127C) working at
ambient pressure with a modified lead-apatite (LK-99) structure. The
superconductivity of LK-99 is proved with the Critical temperature (),
Zero-resistivity, Critical current (), Critical magnetic field (),
and the Meissner effect. The superconductivity of LK-99 originates from minute
structural distortion by a slight volume shrinkage (0.48 %), not by external
factors such as temperature and pressure. The shrinkage is caused by Cu
substitution of Pb(2) ions in the insulating network of Pb(2)-phosphate
and it generates the stress. It concurrently transfers to Pb(1) of the
cylindrical column resulting in distortion of the cylindrical column interface,
which creates superconducting quantum wells (SQWs) in the interface. The heat
capacity results indicated that the new model is suitable for explaining the
superconductivity of LK-99. The unique structure of LK-99 that allows the
minute distorted structure to be maintained in the interfaces is the most
important factor that LK-99 maintains and exhibits superconductivity at room
temperatures and ambient pressure
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