4,342 research outputs found
The Legal Environment and the Choice of Default Resolution Alternatives: An Empirical Analysis
In addition to standard foreclosure, three other methods of resolution for mortgage defaults are available: bankruptcy protection, surrender of deed to the lender, and pre-foreclosure sale. This paper develops a model that specifies the choice of resolution method as a function of the state-specific legal environment and local area economic conditions. A large national data set is used to estimate a multinomial logit choice model for the 1987 to 1991 period. The results indicate that the choice of default resolution alternative is sensitive to the legal environment. The results imply that selected legal reforms will tend to improve the efficiency of the default resolution process.
The Demand Side: Uses of Research in Child and Adolescent Mental Health Services
This special issue on child and adolescent mental health contains a thoughtful set of papers that address many of the challenges in bridging research and practice. These articles, however, focus predominantly on the supply side of producing research for use by a range of audiences, including practitioners, administrators and policy makers. This commentary emphasizes the importance of attending to, and better understanding, the demand side with regard to how research evidence is evaluated, understood, and utilized. Drawing from work underway at the William T. Grant Foundation, the authors argue for the need to understand three broad topics: user settings and perspectives, political, economic and social contexts, and the various uses of research. Furthermore, understanding the use of research evidence, or the demand side, is itself a topic for empirical investigation. The authors conclude that, when it comes to supplying evidence, donāt forget the demand side
On the convergence to statistical equilibrium for harmonic crystals
We consider the dynamics of a harmonic crystal in dimensions with
components, arbitrary, , and study the distribution of
the solution at time . The initial measure has a
translation-invariant correlation matrix, zero mean, and finite mean energy
density. It also satisfies a Rosenblatt- resp. Ibragimov-Linnik type mixing
condition. The main result is the convergence of to a Gaussian measure
as . The proof is based on the long time asymptotics of the Green's
function and on Bernstein's ``room-corridors'' method
Multidimensional Binning Techniques for a Two Parameter Trilinear Gauge Coupling Estimation at LEP II
This paper describes two generalization schemes of the Optimal Variables
technique in estimating simultaneously two Trilinear Gauge Couplings. The first
is an iterative procedure to perform a 2-dimensional fit using the linear terms
of the expansion of the probability density function with respect to the
corresponding couplings, whilst the second is a clustering method of
probability distribution representation in five dimensions. The pair production
of W's at 183 GeV center of mass energy, where one W decays leptonically and
the other hadronically, was used to demonstrate the optimal properties of the
proposed estimation techniques.Comment: (25 pages, 11 figures
Generation of measures on the torus with good sequences of integers
Let be a strictly increasing sequence of positive
integers and denote . We say
is good if for every real the limit exists. By the Riesz representation theorem, a sequence
is good iff for every real the sequence possesses an
asymptotic distribution modulo 1. Another characterization of a good sequence
follows from the spectral theorem: the sequence is good iff in any
probability measure preserving system the limit exists in -norm for .
Of these three characterization of a good set, the one about limit measures
is the most suitable for us, and we are interested in finding out what the
limit measure
on the torus can be. In this first paper on the subject, we investigate the
case of a single irrational . We show that if is a good set then
for every irrational the limit measure must be a
continuous Borel probability measure. Using random methods, we show that the
limit measure can be any measure which is absolutely
continuous with respect to the Haar-Lebesgue probability measure on the torus.
On the other hand, if is the uniform probability measure supported on the
Cantor set, there are some irrational so that for no good sequence
can we have the limit measure equal . We leave open the
question whether for any continuous Borel probability measure on the
torus there is an irrational and a good sequence so that
.Comment: 44 page
Planetary Radio Interferometry and Doppler Experiment (PRIDE) Technique: a Test Case of the Mars Express Phobos Fly-by. 2. Doppler tracking: Formulation of observed and computed values, and noise budget
Context. Closed-loop Doppler data obtained by deep space tracking networks
(e.g., NASA's DSN and ESA's Estrack) are routinely used for navigation and
science applications. By "shadow tracking" the spacecraft signal, Earth-based
radio telescopes involved in Planetary Radio Interferometry and Doppler
Experiment (PRIDE) can provide open-loop Doppler tracking data when the
dedicated deep space tracking facilities are operating in closed-loop mode
only. Aims. We explain in detail the data processing pipeline, discuss the
capabilities of the technique and its potential applications in planetary
science. Methods. We provide the formulation of the observed and computed
values of the Doppler data in PRIDE tracking of spacecraft, and demonstrate the
quality of the results using as a test case an experiment with ESA's Mars
Express spacecraft. Results. We find that the Doppler residuals and the
corresponding noise budget of the open-loop Doppler detections obtained with
the PRIDE stations are comparable to the closed-loop Doppler detections
obtained with the dedicated deep space tracking facilities
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