549 research outputs found
Scattering Uniformity Measurements and First Reflection Analysis in a Large Nonanechoic Environment
Following previous investigation, carried out at the University of Parma in 1999 and 2000, LAE (Laboratory of
Acoustics and Electroacoustics) started a new measurement campaign to compare with the original results on the
same type of diffusor panels, to verify AES-4id-2001 measurement standard and to investigate the nature of
scattering phenomena in more detail. Measurements are conducted on the floor of a large closed space to obtain a
reflection free time window, long enough to study the first reflection from the panel; the use of sine sweep excitation
signals instead of the recommended MLS ones permits to ameliorate the acquisition process. The present article
discusses research background studies and the results from the first round of measurements
Caries classification and management in the context of the CariesCare International (CCI™) consensus:a clinical case study
The objective of this clinical case study is to illustrate the caries management four-step structured process, leading to
personalised interventions specifc for each individual patient’s risks and needs, according to CariesCare International, derived
from the International Caries Classifcation and Management System (ICCMS) for clinical practice. An 18-year-old female was
diagnosed with higher caries risk at the individual level, and with several caries lesions at different severity stages, some likely
active and others likely inactive. A care plan was co-created with the patient and delivered to obtain optimal health outcomes.
Several issues pertinent to patient-centred care are discussed, including caries management at the individual and the tooth
surface level, the preservation of tooth structure, patient’s caries risk management, and prevention and control of caries
lesions. The patient’s perspective is taken into account and the health outcome focus of the system is highlighted
Network information and connected correlations
Entropy and information provide natural measures of correlation among
elements in a network. We construct here the information theoretic analog of
connected correlation functions: irreducible --point correlation is measured
by a decrease in entropy for the joint distribution of variables relative
to the maximum entropy allowed by all the observed variable
distributions. We calculate the ``connected information'' terms for several
examples, and show that it also enables the decomposition of the information
that is carried by a population of elements about an outside source.Comment: 4 pages, 3 figure
Development of a Core Curriculum Framework in Cariology for U.S. Dental Schools
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/153683/1/jddj002203372016806tb06133x.pd
Weak pairwise correlations imply strongly correlated network states in a neural population
Biological networks have so many possible states that exhaustive sampling is
impossible. Successful analysis thus depends on simplifying hypotheses, but
experiments on many systems hint that complicated, higher order interactions
among large groups of elements play an important role. In the vertebrate
retina, we show that weak correlations between pairs of neurons coexist with
strongly collective behavior in the responses of ten or more neurons.
Surprisingly, we find that this collective behavior is described quantitatively
by models that capture the observed pairwise correlations but assume no higher
order interactions. These maximum entropy models are equivalent to Ising
models, and predict that larger networks are completely dominated by
correlation effects. This suggests that the neural code has associative or
error-correcting properties, and we provide preliminary evidence for such
behavior. As a first test for the generality of these ideas, we show that
similar results are obtained from networks of cultured cortical neurons.Comment: Full account of work presented at the conference on Computational and
Systems Neuroscience (COSYNE), 17-20 March 2005, in Salt Lake City, Utah
(http://cosyne.org
Non-invasive study of natural dyes on historical textiles from the collection of Michelangelo Guggenheim
A selection of historical textile fragments from the Venetian art dealer Moisè Michelangelo Guggenheim collection, ranging from XV to XVIII century, has been investigated by means of non-invasive techniques in order to reveal the coloring materials. Imaging was preliminarily used to visually investigate the selected artwork fragments in order to investigate their structure and conservation conditions; Fiber Optics Reflectance Spectroscopy (FORS) allowed recognizing the main natural dyestuffs, such as indigotin and anthraquinones-based compounds, except the yellow ones, difficultly identifiable when using this non-invasive technique. Collected spectroscopic data have been also elaborated by using a clustering algorithm that permitted to group collected spectra on the basis of similar properties and evidencing their inflection point wavelength as the most influencing feature
Measurement of Rapidity Distribution for High Mass Drell-Yan ee Pairs at CDF
We report on the first measurement of the rapidity distribution dsigma/dy
over nearly the entire kinematic region of rapidity for e^+e^- pairs in the
Z-boson region of 66116 GeV/c^2.
The data sample consists of 108 pb^{-1} of ppbar collisions at \sqrt{s}=1.8 TeV
taken by the Collider Detector at Fermilab during 1992--1995. The total cross
section in the -boson region is measured to be 252 +- 11 pb. The measured
total cross section and d\sigma/dy are compared with quantum chromodynamics
calculations in leading and higher orders.Comment: 7 pages, 3 figures. Submitted to Physical Review Letter
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