1,573 research outputs found
Continuous Transition of Defect Configuration in a Deformed Liquid Crystal Film
We investigate energetically favorable configurations of point disclinations
in nematic films having a bump geometry. Gradual expansion in the bump width
{\Delta} gives rise to a sudden shift in the stable position of the
disclinations from the top to the skirt of the bump. The positional shift
observed across a threshold {\Delta}th obeys a power law function of
|{\Delta}-{\Delta}th|, indicating a new class of continuous phase transition
that governs the defect configuration in curved nematic films.Comment: 8pages, 3figure
Anomalous phase shift in a twisted quantum loop
Coherent motion of electrons in a twisted quantum ring is considered to
explore the effect of torsion inherent to the ring. Internal torsion of the
ring composed of helical atomic configuration yields a non-trivial quantum
phase shift in the electrons' eigenstates. This torsion-induced phase shift
causes novel kinds of persistent current flow and an Aharonov-Bohm like
conductance oscillation. The two phenomena can occur even when no magnetic flux
penetrates inside the twisted ring, thus being in complete contrast with the
counterparts observed in untwisted rings.Comment: 13 paes, 5 figure
Flux-free conductance modulation in a helical Aharonov-Bohm interferometer
A novel conductance oscillation in a twisted quantum ring composed of a
helical atomic configuration is theoretically predicted. Internal torsion of
the ring is found to cause a quantum phase shift in the wavefunction that
describes the electron's motion along the ring. The resulting conductance
oscillation is free from magnetic flux penetrating inside the ring, which is in
complete contrast with the ordinary Aharonov-Bohm effect observed in untwisted
quantum rings.Comment: 10 pages, 4 figure
Analisis Penerimaan Teknologi dan Kesuksesan Aplikasi ULA Pada Pelaku UMKM di Surabaya Menggunakan Metode UTAUT dan Delone & Mclean
Perubahan perilaku masyarakat pada situs belanja online dapat menjadi sarana bagi UMKM (Usaha Mikro Kecil Menengah) dalam mengadopsi teknologi dalam memenuhi kebutuhan konsumennya dan mempermudah bisnisnya. Salah satu e-commerce yang memberikan kemudahan bagi UMKM dengan memanfaatkan teknologi adalah hadirnya aplikasi ULA (Untung Lancar Aman). Namun dalam pengembangan sebuah aplikasi tentunya banyak inovasi yang perlu ditingkatkan. Untuk menghasilkan teknologi informasi yang baik perlu adanya sebuah evaluasi sistem untuk meningkatkan kinerja dari sistem tersebut. Dalam penelitian ini dilakukan penggabungan dua model yakni Delone & McLean dan UTAUT. Penggunaan dua model ini untuk mengetahui respon dan perspektif keberhasilan dan penerimaan terhadap suatu sistem jika diterapkan pada pengguna aplikasi ULA yang merupakan pelaku UMKM di Kota Surabaya. Jenis pendekatan pada penelitian ini adalah kuantitatif dengan penyebaran kuesioner secara online dan offline sebanyak 110 responden yang diolah dengan software SmartPLS. Berdasarkan olah data, didapatkan hasil 5 hipotesis diterima yakni variabel information quality dan service quality yang berpengaruh posistif dan signifikan pada behavioral intention, variabel information quality yang berpengaruh positif dan signifikan pada user satisfaction. Behavioral intention dan user satisfaction memiliki pengaruh positif dan signifikan pada net benefits. Selain itu 6 hipotesis ditolak, diharapkan dapat dilakukan evaluasi sistem untuk dapat membangun prospek bisnis perusahaan pada masa mendatang
The volume of Gaussian states by information geometry
We formulate the problem of determining the volume of the set of Gaussian
physical states in the framework of information geometry. That is, by
considering phase space probability distributions parametrized by the
covariances and supplying this resulting statistical manifold with the
Fisher-Rao metric. We then evaluate the volume of classical, quantum and
quantum entangled states for two-mode systems showing chains of strict
inclusion
As bad as it gets: Well being deprivation of sexually trafficked women
The International Organization for Migration has collected data on trafficked individuals. The aim of this paper is to use the sub-sample of sexually exploited women in order to explore the relationship between their well being deprivation, their personal characteristics, and their working locations. We use the theoretical framework of the capability approach to conceptualize well being deprivation and we estimate a MIMIC (Multiple Indicators Multiple Causes) model. The utilized indicators measure abuse, freedom of movement, and access to medical care. This model also allows us to estimate the effects of some covariates on this measure of well being
Novel scaling behavior of the Ising model on curved surfaces
We demonstrate the nontrivial scaling behavior of Ising models defined on (i)
a donut-shaped surface and (ii) a curved surface with a constant negative
curvature. By performing Monte Carlo simulations, we find that the former model
has two distinct critical temperatures at which both the specific heat
and magnetic susceptibility show sharp peaks.The critical exponents
associated with the two critical temperatures are evaluated by the finite-size
scaling analysis; the result reveals that the values of these exponents vary
depending on the temperature range under consideration. In the case of the
latter model, it is found that static and dynamic critical exponents deviate
from those of the Ising model on a flat plane; this is a direct consequence of
the constant negative curvature of the underlying surface.Comment: 11 pages 5 figure
Exacerbation of Diabetic Control by Large Amount of Sports Drink in Baseball Athlete with Detail Investigation
Authors have continued clinical practice and research of low carbohydrate diet (LCD). The case is 62-year-old men with obesity and type 2 diabetes mellitus (T2DM). For social/sport history, he worked as an administration manager of a large hospital and has been baseball player during 15-62 years old. Regarding medical history, he was on LCD with 96kg and HbA1c 6.0% in 2020. He participated many ballgames March-September 2021. He took oral rehydration solution (ORS) (Pokari Sweat, Otsuka Pharmaceutical) 1000ml/day during Mar-June in rather mild climate, and sports drink solution (SDS) (Body Mainte, Otsuka Pharmaceutical) 2000-3000ml/day during Jul-Sept in severe hot weather. He developed thirsty, polydipsia, polyuria, and fatigue and weight loss in Sept and HbA1c was 14.0%. Treatments started immediately by super-LCD, in which taken food in three meals a day was completely taken pictures by recording diet method. The analyzed carbohydrate amount was 40-90g per day, and LCD meal was effective. Just after LCD was started, blood glucose was normalized soon. HbA1c values were decreased to 10.3% in October and 7.8% in November. Consequently, this case had successful and satisfactory clinical improvement by LCD. Some discussion was described concerning LCD, hydration, ORS, SDS, adequate relationship with sports and so on
Nature of a Strongly-Lensed Submillimeter Galaxy SMM J14011+0252
We have carried out near-infrared JHK spectroscopy of a gravitationally
lensed submillimeter galaxy SMM J14011+0252 at z=2.565, using OHS and CISCO on
the Subaru telescope. This object consists of two optical components, J1 and
J2, which are lensed by the cluster Abell 1835. J1 suffers additional strong
lensing by a foreground galaxy at z=0.25 in the cluster. The rest-optical
H-alpha, H-beta, and [O II]3727 lines are detected in both J1 and J2, and [N
II]6548,6583 lines are also detected in J1. A diagnosis of emission-line ratios
shows that the excitation source of J1 is stellar origin, consistent with
previous X-ray observations. The continua of J1 and J2 show breaks at rest
4000A, indicating relatively young age. Combined with optical photometry, we
have carried out model spectrum fitting of J2 and find that it is a very young
(~50 Myr) galaxy of rather small mass (~10e8 M_sol) which suffers some amount
of dust extinction. A new gravitational lensing model is constructed to assess
both magnification factor and contamination from the lensing galaxy of the
component J1, using HST-F702W image. We have found that J1 suffers strong
lensing with magnification of ~30, and its stellar mass is estimated to be <
10e9 M_sol. These results suggest that SMM J14011+0252 is a major merger system
at high redshift that undergoes intense star formation, but not a formation
site of a giant elliptical. Still having plenty of gas, it will transform most
of the gas into stars and will evolve into a galaxy of < 10e10 M_sol.
Therefore, this system is possibly an ancestor of a less massive galaxy such as
a mid-sized elliptical or a spiral at the present.Comment: 21 pages, 11 figures. Accepted for publication in Astronomical
Journa
Corner Transfer Matrix Renormalization Group Method Applied to the Ising Model on the Hyperbolic Plane
Critical behavior of the Ising model is investigated at the center of large
scale finite size systems, where the lattice is represented as the tiling of
pentagons. The system is on the hyperbolic plane, and the recursive structure
of the lattice makes it possible to apply the corner transfer matrix
renormalization group method. From the calculated nearest neighbor spin
correlation function and the spontaneous magnetization, it is concluded that
the phase transition of this model is mean-field like. One parameter
deformation of the corner Hamiltonian on the hyperbolic plane is discussed.Comment: 4 pages, 5 figure
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