12 research outputs found
Finite-dimensional signature of spinodal instability in an athermal hysteretic transition
We study the off-equilibrium critical phenomena across a hysteretic
first-order transition in disordered athermal systems. The study focuses on the
zero temperature random field Ising model (ZTRFIM) above the critical disorder
for spatial dimensions and . We use Monte Carlo simulations to show
that disorder suppresses critical slowing down in phase ordering time for
finite-dimensional systems. The dynamic hysteresis scaling, the measure of
explicit finite-time scaling, is used to subsequently quantify the critical
slowing down. The scaling exponents in all dimensions increase with disorder
strength and finally reach a stable value where the transformation is no longer
critical. The associated critical behavior in the mean-field limit is very
different, where the exponent values for various disorders in all dimensions
are similar. The non-mean-field exponents asymptotically approach the
mean-field value () with increase in dimensions. The
results suggest that the critical features in the hysteretic metastable phase
are controlled by inherent mean-field spinodal instability that gets blurred by
disorder in low-dimension athermal systems.Comment: 10 pages, 7 figure
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Suppression of spinodal instability by disorder in athermal system
We observed asymmetric critical slowing down and asymmetric dynamical scaling
exponent in the superheating and supercooling kinetic processes during the
thermally-induced metal-insulator transition of MnNiSn based heusler alloy.
During the transition to the insulator phase, the critical-like features get
enhanced compared to the transition back to the metal phase. These experimental
findings suggest that the metastable phase in the cooling branch of hysteresis
has approached close to the spinodal instability. On the other hand, the
extended disorder, generated over and above the intrinsic crystal defects
during heating, triggers the excess heterogeneous nucleation before reaching
the spinodal point. Zero temperature random field Ising model (ZTRFIM)
simulation, inscribed for the athermal martensitic transitions, support the
argument that the disorder smears the spinodal instabilities as the correlation
length is bounded by the average distance between the disorder points.Comment: 12 pages, 16 figure
Critical Slowing Down at the Abrupt Mott Transition: When the First-Order Phase Transition Becomes Zeroth-Order and Looks Like Second-Order
We report that the thermally-induced Mott transition in vanadium sesquioxide
shows critical-slowing-down and enhanced variance ('critical opalescence') of
the order parameter fluctuations measured through low-frequency
resistance-noise spectroscopy. Coupled with the observed increase of also the
phase-ordering time, these features suggest that the strong abrupt transition
is controlled by a critical-like singularity in the hysteretic metastable
phase. The singularity is identified with the spinodal point and is a likely
consequence of the strain-induced long-range interaction.Comment: 14 pages, 16 figure
Real-time microscopic view of the relaxation of a glass
The understanding of glassy dynamics above the devitrification temperature of
a glass remains poorly understood. Here, we use real-time AFM imaging to build
a spatio-temporal map of the relaxation dynamics of a highly stable glass into
its supercooled liquid. This new methodology enables a direct visualization of
the progression of the liquid phase and clarifies and quantifies the presence
of localized fast mobility regions separated by giant length scales. Our data
permit to establish a clear correlation between dynamic length and time scales
in glasses. This approach may also be applicable to unveil the microscopic
structure and dynamics of other glass forming systems with much shorter length
and time scales, including liquid-cooled glasses
KONSTRUKSI PESAN DISIPLIN DALAM TAYANGAN PROGRAM REALITY SHOW 86 NET TV PADA TANGGAL 1-30 AGUSTUS 2015 : STUDI ANALISIS FRAMING DENGAN MODEL ZHONGDANG PAN DAN GERALD M KOSICKI
Tayangan reality show adalah acara televisi yang menggambarkan adegan yang seakan-akan benar-benar berlangsung tanpa skenario, dengan pemain yang umumnya khalayak umum biasa, bukan mereka yang memiliki pekerjaan di bidang seni peran. Acara reality show umumnya menampilkan kenyataan yang di modifikasi, seperti menaruh partisipan di lokasi-lokasi eksotis atau situasi-situasi yang tidak lazim, memancing reaksi tertentu dari partisipan, dan melalui penyuntingan dan teknik-teknik pasca produksi lainnya.
Adapun fokus penelitian yang hendak dikaji pada penelitian ini adalah: Bagaimana struktur sintaksis, struktur skrip, struktur tematik, dan struktur retoris tentang pesan disiplin dalam program reality show 86 Net Tv ?
Hasil penelitian yang ditemukan antara lain: ( 1 ) Hilangnya kesadaran masyarakat akan pentingnya berdisiplin dalam menaati setiap peraturan yang telah di tetapkan pemerintah di indonesia. ( 2 ) Kurangnya pemahaman masyarakat tentang arti berdisiplin dan banyak di antara pelanggar aturan tata tertib menghindar dan merasa ketakutan ketika melihat polisi serta banyak yang melarikan diri dari upaya pendisiplinan yang dilakukan oleh petugas kepolisian. ( 3 ) Banyaknya pencitraan yang dilakukan oleh pihak kepolisian dalam tayangan ini dan tidak sesuai dengan realita sosok polisi yang ada dalam dunia nyata.
Bertitik tolak dari penelitian ini, saran dari peneliti untuk tim Produksi tayangan reality show 86 Net TV selajutnya peneliti harapkan untuk memperhatikan kode etik jurnalistik mengenai hak perlindungan pelaku dan korban untuk selalu di samarkan yang berkaitan dengan tayangan ini. Karena peneliti masih melihat ada sebagian tayangan yang masih memperlihatkan wajah dari pelaku dan korban hal ini yang di khawatirkan adalah baik korban ataupun pelaku akan dikucilkan dari masyarakat sebagai tindakan pelanggaran norma hukum yang ada di masyarakat, mengingat di indonesia masih kental dengan adat norma – norma yang berlaku dalam masyarakat
Focused Sampling: Computing Topical Web Statistics
been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). Copies may be requested from IBM T. J. Watson Research Center, P
Experimental comparison of micro-scaled plate-fins and pin-fins under natural convection
Source data for manuscript "Real-time microscopy of the relaxation of a glass"
Source data for manuscript "Real-time microscopy of the relaxation of a glass" (DOI: 10.1038/s41567-023-02125-0), including: AFM source images and data points for all plots in the manuscript.AFM images Figures 1, 3, 4.rarFigure 1c profile centre.txtFigure 1c profile left.txtFigure 1c profile right.txtFigure 1d.txtFigure 2c AFM.txtFigure 2c FEM.txtFigure 3a inset.txtFigure 3a.txtFigure 4a Growth1.txtFigure 4a Growth2.txtFigure 4a Growth3.txtFigure 4a Growth4.txtFigure 4a Growth5.txtFigure 4a Growth6.txtFigure 4a Growth7.txtFigure 4b.txtPeer reviewe