770,014 research outputs found
Dijet Event Shapes as Diagnostic Tools
Event shapes have long been used to extract information about hadronic final
states and the properties of QCD, such as particle spin and the running
coupling. Recently, a family of event shapes, the angularities, has been
introduced that depends on a continuous parameter. This additional
parameter-dependence further extends the versatility of event shapes. It
provides a handle on nonperturbative power corrections, on non-global
logarithms, and on the flow of color in the final state.Comment: 18 pages, 3 figure
Components of cell-matrix linkage as potential new markers for prostate cancer
Prostate cancer is one of the most common tumor diseases worldwide. Often being non-aggressive, prostate tumors in these cases do not need immediate treatment. However, about 20% of diagnosed prostate cancers tend to metastasize and require treatment. Existing diagnostic methods may fail to accurately recognize the transition of a dormant, non-aggressive tumor into highly malignant prostate cancer. Therefore, new diagnostic tools are needed to improve diagnosis and therapy of prostate carcinoma. This review evaluates existing methods to diagnose prostate carcinoma, such as the biochemical marker prostate-specific antigen (PSA), but also discusses the possibility to use the altered expression of integrins and laminin-332 in prostate carcinomas as diagnostic tools and therapeutic targets of prostate cancer
Seismic signatures of stellar cores of solar-like pulsators: dependence on mass and age
Useful information from the inner layers of stellar pulsators may be derived
from the study of their oscillations. In this paper we analyse three diagnostic
tools suggested in the literature built from the oscillation frequencies
computed for a set of main sequence models with masses between and , to check what information they may
hold about stellar cores. For the models with convective cores () we find a relation between the frequency slopes of the
diagnostic tools and the size of the jump in the sound speed at the edge of the
core. We show that this relation is independent of the mass of the models. In
practice, since the size of the jump in the sound speed is related to the age
of the star, using these seismic tools we may, in principle, infer the star's
evolutionary state. We also show that when combining two of the three
diagnostic tools studied, we are able to distinguish models with convective
cores from models without a convective core but with strong sound-speed
gradients in the inner layers
Rig Diagnostic Tools
Rig Diagnostic Tools is a suite of applications designed to allow an operator to monitor the status and health of complex networked systems using a unique interface between Java applications and UNIX scripts. The suite consists of Java applications, C scripts, Vx- Works applications, UNIX utilities, C programs, and configuration files. The UNIX scripts retrieve data from the system and write them to a certain set of files. The Java side monitors these files and presents the data in user-friendly formats for operators to use in making troubleshooting decisions. This design allows for rapid prototyping and expansion of higher-level displays without affecting the basic data-gathering applications. The suite is designed to be extensible, with the ability to add new system components in building block fashion without affecting existing system applications. This allows for monitoring of complex systems for which unplanned shutdown time comes at a prohibitive cost
Advances toward diagnostic tools for managing zoonotic visceral leishmaniasis
Visceral leishmaniasis (VL) is a life-threatening outcome of Leishmania infantum or Leishmania donovani infection. Dogs are the primary domestic reservoir of L. infantum parasites, and ownership of infected dogs increases the risk of human VL. Controlling infection within dog populations is regarded as critical to VL management in endemic countries, both preventing progression of canine disease and limiting parasite transmission to humans and dogs. Here we discuss various strategies that are used to diagnose canine visceral leishmaniasis (CVL) and the possibilities of adapting these for use within population screening and control programs. In addition, given the variable transmissibility of L. infantum to the sand fly vector, we outline some possibilities for the preferential identification of ‘super-spreader’ dogs among the overall infected population
Diagnostic tools for 3D unstructured oceanographic data
Most ocean models in current use are built upon structured meshes. It follows
that most existing tools for extracting diagnostic quantities (volume and
surface integrals, for example) from ocean model output are constructed using
techniques and software tools which assume structured meshes. The greater
complexity inherent in unstructured meshes (especially fully unstructured grids
which are unstructured in the vertical as well as the horizontal direction) has
left some oceanographers, accustomed to traditional methods, unclear on how to
calculate diagnostics on these meshes. In this paper we show that tools for
extracting diagnostic data from the new generation of unstructured ocean models
can be constructed with relative ease using open source software. Higher level
languages such as Python, in conjunction with packages such as NumPy, SciPy,
VTK and MayaVi, provide many of the high-level primitives needed to perform 3D
visualisation and evaluate diagnostic quantities, e.g. density fluxes. We
demonstrate this in the particular case of calculating flux of vector fields
through isosurfaces, using flow data obtained from the unstructured mesh finite
element ocean code ICOM, however this tool can be applied to model output from
any unstructured grid ocean code
On the inference of stellar ages and convective-core properties in main-sequence solar-like pulsators
Particular diagnostic tools may isolate the signature left on the oscillation
frequencies by the presence of a small convective core. Their frequency
derivative is expected to provide information about convective core's
properties and stellar age. The main goal of this work is to study the
potential of the diagnostic tools with regards to the inference of stellar age
and stellar core's properties. For that, we computed diagnostic tools and their
frequency derivatives from the oscillation frequencies of main-sequence models
with masses between 1.0 and and with different physics.
We considered the dependence of the diagnostic tools on stellar age and on the
size of the relative discontinuity in the squared sound speed at the edge of
the convectively unstable region. We find that the absolute value of the
frequency derivatives of the diagnostic tools increases as the star evolves on
the main sequence. The fraction of stellar main-sequence evolution for models
with masses may be estimated from the frequency
derivatives of two of the diagnostic tools. For lower mass models, constraints
on the convective core's overshoot can potentially be derived based on the
analysis of the same derivatives. For at least 35 per cent of our sample of
stellar models the frequency derivative of the diagnostic tools takes its
maximum absolute value on the frequency range where observed oscillations may
be expected.Comment: 11 pages, 12 figures, published in MNRA
Diagnosing Degenerate Higgs Bosons at 125 GeV
We develop diagnostic tools that would provide incontrovertible evidence for
the presence of more than one Higgs boson near 125 GeV in the LHC data.Comment: 4 pages, 2 figure
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