272 research outputs found
Analisis Kualitas Pelayanan Pemberian Kredit terhadap Kepuasan Pelanggan di PT. BPR Cabang Tangerang
Penelitian ini bertujuan untuk mengetahui kualitas pelayanan pemberian kredit PT. BPR Cabang Tangerang dan untuk mengetahui tingkat kepuasan pelanggan PT. BPR Cabang Tangerang.
Jenis penelitian yang digunakan adalah deskriptif kuantitatif. Teknik pengumpulan data dilakukan melalui observasi, angket, wawancara dan dokumentasi. Penentuan responden dipilih dengan menggunakan purposive sampling dengan sampel sebanyak 70 responden. Teknik analisis data yang digunakan adalah statistik deskriptif , untuk melihat tingkat kepuasan pelanggan.
Hasil penelitian menunjukkan bahwa: (1) Kualitas pelayanan pemberian kredit PT. BPR Cabang Tangerang berada pada kategori baik (79,81 persen). Jika ditinjau dari tiap dimensinya, satu dimensi berada pada kategori sangat baik yaitu, dimensi bukti langsung 90,50%, dua dimensi berada pada kategori baik yaitu dimensi jaminan 84,86% dan dimensi Empati 84,64%, serta dua dimensi pada kategori cukup baik yaitu dimensi kehandalan 69,43% dan dimensi responsivitas 69,64%. (2) Kepuasan pelanggan PT. BPR Cabang Tangerang berada dalam kategori cukup puas. Hal tersebut mengindikasikan bahwa secara umum kepuasan pelanggan belum tercapai.
Kata Kunci : Kualitas Pelayanan, Kepuasan Nasaba
Entanglement dynamics of electron-electron scattering in low-dimensional semiconductor systems
We perform the quantitative evaluation of the entanglement dynamics in
scattering events between two insistinguishable electrons interacting via
Coulomb potential in 1D and 2D semiconductor nanostructures. We apply a
criterion based on the von Neumann entropy and the Schmidt decomposition of the
global state vector suitable for systems of identical particles. From the
timedependent numerical solution of the two-particle wavefunction of the
scattering carriers we compute their entanglement evolution for different spin
configurations: two electrons with the same spin, with different spin, singlet,
and triplet spin state. The procedure allows to evaluate the mechanisms that
govern entanglement creation and their connection with the characteristic
physical parameters and initial conditions of the system. The cases in which
the evolution of entanglement is similar to the one obtained for
distinguishable particles are discussed.Comment: 22 pages, 7 figures, submitted to Physical Review
Finding the Pion in the Chiral Random Matrix Vacuum
The existence of a Goldstone boson is demonstrated in chiral random matrix
theory. After determining the effective coupling and calculating the scalar and
pseudoscalar propagators, a random phase approximation summation reveals the
massless pion and massive sigma modes expected whenever chiral symmetry is
spontaneously broken.Comment: 3 pages, 1 figure, revte
On the stationary points of the TAP free energy
In the context of the p-spin spherical model, we introduce a method for the
computation of the number of stationary points of any nature (minima, saddles,
etc.) of the TAP free energy. In doing this we clarify the ambiguities related
to the approximations usually adopted in the standard calculations of the
number of states in mean field spin glass models.Comment: 11 pages, 1 Postscript figure, plain Te
Delivering reform in English healthcare: an ideational perspective
A variety of perspectives has been put forward to understand reform across healthcare systems. Recently, some have called for these perspectives to give greater recognition to the role of ideational processes. The purpose of this article is to present an ideational approach to understanding the delivery of healthcare reform. It draws on a case of English healthcare reform – the Next Stage Review led by Lord Darzi – to show how the delivery of its reform proposals was associated with four ideational frames. These frames built on the idea of “progress” in responding to existing problems; the idea of “prevailing policy” in forming part of a bricolage of ideas within institutional contexts; the idea of “prescription” as top-down structural change at odds with local contexts; and the idea of “professional disputes” in challenging the notion of clinical engagement across professional groups. The article discusses the implications of these ideas in furthering our understanding of policy change, conflict and continuity across healthcare settings
Off-diagonal correlations in one-dimensional anyonic models: A replica approach
We propose a generalization of the replica trick that allows to calculate the
large distance asymptotic of off-diagonal correlation functions in anyonic
models with a proper factorizable ground-state wave-function. We apply this new
method to the exact determination of all the harmonic terms of the correlations
of a gas of impenetrable anyons and to the Calogero Sutherland model. Our
findings are checked against available analytic and numerical results.Comment: 19 pages, 5 figures, typos correcte
Dynamical TAP approach to mean field glassy systems
The Thouless, Anderson, Palmer (TAP) approach to thermodynamics of mean field
spin-glasses is generalised to dynamics. A method to compute the dynamical TAP
equations is developed and applied to the p-spin spherical model. In this
context we show to what extent the dynamics can be represented as an evolution
in the free energy landscape. In particular the relationship between the
long-time dynamics and the local properties of the free energy landscape shows
up explicitly within this approach. Conversely, by an instantaneous normal
modes analysis we show that the local properties of the energy landscape seen
by the system during its dynamical evolution do not change qualitatively at the
dynamical transition.Comment: final version, 21 pages, 1 eps figur
Bosonizing one-dimensional cold atomic gases
We present results for the long-distance asymptotics of correlation functions
of mesoscopic one-dimensional systems with periodic and open (Dirichlet)
boundary conditions, as well as at finite temperature in the thermodynamic
limit. The results are obtained using Haldane's harmonic-fluid approach (also
known as ``bosonization''), and are valid for both bosons and fermions, in
weakly and strongly interacting regimes. The harmonic-fluid approach and the
method to compute the correlation functions using conformal transformations are
explained in great detail. As an application relevant to one-dimensional
systems of cold atomic gases, we consider the model of bosons interacting with
a zero-range potential. The Luttinger-liquid parameters are obtained from the
exact solution by solving the Bethe-ansatz equations in finite-size systems.
The range of applicability of the approach is discussed, and the prefactor of
the one-body density matrix of bosons is fixed by finding an appropriate
parametrization of the weak-coupling result. The formula thus obtained is shown
to be accurate, when compared with recent diffusion Montecarlo calculations,
within less than 10%. The experimental implications of these results for Bragg
scattering experiments at low and high momenta are also discussed.Comment: 39 pages + 14 EPS figures; typos corrected, references update
Scattering phases in quantum dots: an analysis based on lattice models
The properties of scattering phases in quantum dots are analyzed with the
help of lattice models. We first derive the expressions relating the different
scattering phases and the dot Green functions. We analyze in detail the Friedel
sum rule and discuss the deviation of the phase of the transmission amplitude
from the Friedel phase at the zeroes of the transmission. The occurrence of
such zeroes is related to the parity of the isolated dot levels. A statistical
analysis of the isolated dot wave-functions reveals the absence of significant
correlations in the parity for large disorder and the appearance, for weak
disorder, of certain dot states which are strongly coupled to the leads. It is
shown that large differences in the coupling to the leads give rise to an
anomalous charging of the dot levels. A mechanism for the phase lapse observed
experimentally based on this property is discussed and illustrated with model
calculations.Comment: 18 pages, 9 figures. to appear in Physical Review
Effects of inhomogeneous partial absorption and the geometry of the boundary on the population evolution of molecules diffusing in general porous media
We consider aspects of the population dynamics, inside a bound domain, of
diffusing agents carrying an attribute which is stochastically destroyed upon
contact with the boundary. The normal mode analysis of the relevant Helmholtz
equation under the partially absorbing, but uniform, boundary condition
provides a starting framework in understanding detailed evolution dynamics of
the attribute in the time domain. In particular, the boundary-localized
depletion has been widely employed in practical applications that depend on
geometry of various porous media such as rocks, cement, bones, and cheese.
While direct relationship between the pore geometry and the
diffusion-relaxation spectrum forms the basis for such applications and has
been extensively studied, relatively less attention has been paid to the
spatial variation of the boundary condition. In this work, we focus on the way
the pore geometry and the inhomogeneous depletion strength of the boundary
become intertwined and thus obscure the direct relationship between the
spectrum and the geometry. It is often impossible to gauge experimentally the
degree to which such interference occur. We fill this gap by perturbatively
incorporating classes of spatially-varying boundary conditions and derive their
consequences that are observable through numerical simulations or controlled
experiments on glass bead packs and artificially fabricated porous media. We
identify features of the spectrum that are most sensitive to the inhomogeneity
and apply the method to the spherical pore with a simple hemi-spherical binary
distribution of the depletion strength and obtain bounds for the induced change
in the slowest relaxation mode
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