525 research outputs found
FILOU oscillation code
The present paper provides a description of the oscillation code FILOU, its
main features, type of applications it can be used for, and some representative
solutions. The code is actively involved in CoRoT/ESTA exercises (this volume)
for the preparation for the proper interpretation of space data from the CoRoT
mission. Although CoRoT/ESTA exercises have been limited to the oscillations
computations for non-rotating models, the main characteristic of FILOU is,
however, the computation of radial and non-radial oscillation frequencies in
presence of rotation. In particular, FILOU calculates (in a perturbative
approach) adiabatic oscillation frequencies corrected for the effects of
rotation (up to the second order in the rotation rate) including near
degeneracy effects. Furthermore, FILOU works with either a uniform rotation or
a radial differential rotation profile (shellular rotation), feature which
makes the code singular in the field.Comment: 6 pages, 5 figures. Astrophysics and Space Science (in press
The Effect of a Multi-Level Intervention on the Initiation of Antiretroviral Therapy (ART) among HIV-Infected Men Who Inject Drugs and Were Diagnosed Late in Thai Nguyen, Vietnam
In Vietnam, an estimated 256,000 people are living with HIV, and 58% of HIV-infections reported are among people who inject drugs (PWID). While antiretroviral therapy (ART) is widely available in Vietnam, marginalized hard-to-reach male PWID, demonstrate significantly reduced and delayed access to ART
Enhancing Detection of Topological Order by Local Error Correction
The exploration of topologically-ordered states of matter is a long-standing
goal at the interface of several subfields of the physical sciences. Such
states feature intriguing physical properties such as long-range entanglement,
emergent gauge fields and non-local correlations, and can aid in realization of
scalable fault-tolerant quantum computation. However, these same features also
make creation, detection, and characterization of topologically-ordered states
particularly challenging. Motivated by recent experimental demonstrations, we
introduce a new paradigm for quantifying topological states -- locally
error-corrected decoration (LED) -- by combining methods of error correction
with ideas of renormalization-group flow. Our approach allows for efficient and
robust identification of topological order, and is applicable in the presence
of incoherent noise sources, making it particularly suitable for realistic
experiments. We demonstrate the power of LED using numerical simulations of the
toric code under a variety of perturbations. We subsequently apply it to an
experimental realization, providing new insights into a quantum spin liquid
created on a Rydberg-atom simulator. Finally, we extend LED to generic
topological phases, including those with non-abelian order.Comment: Corrected minor typos. Added new results on generalizations to
non-abelian topological phases, and connections between LED and topological
entanglement negativit
Increased Survival Among HIV-Infected PWID Receiving a Multi-Level HIV Risk and Stigma Reduction Intervention: Results From a Randomized Controlled Trial
In Vietnam, where 58% of prevalent HIV cases are attributed to PWID, we evaluated whether a multi-level intervention could improve care outcomes and increase survival
Preformed heavy-electrons at the Quantum Critical Point in heavy fermion compounds
The existence of multiple energy scales is regarded as a signature of the
Kondo breakdown mechanism for explaining the quantum critical behavior of
certain heavy fermion compounds, like YbRhSi. The nature of the
intermediate state between the heavy Fermi liquid and the quantum critical
region, however, remains elusive. In this study we suggest an incoherent
heavy-fermion scenario, where inelastic scattering with novel soft modes of the
dynamical exponent gives rise to non-Fermi liquid physics for
thermodynamics and transport despite the formation of the heavy-fermion band.
We discuss a crossover from to for quantum phase fluctuations
Roles and Functions of Social Networks Among Men Who Use Drugs in ART Initiation in Vietnam
Support from social network members may help to facilitate access to HIV medical care, especially in low resourced communities. As part of a randomized clinical trial of a community-level stigma and risk reduction intervention in Thai Nguyen, Vietnam for people living with HIV who inject drugs (PWID), 341 participants were administered a baseline social network inventory. Network predictors of antiretroviral therapy (ART) initiation at the six-month follow-up were assessed. The social networks of PWID were sparse. Few participants who reported injectors in their networks also reported family members, whereas those who did not have injectors were more likely to report family members and network members providing emotional support and medical advice. In multivariate models, having at least one network member who provided medical advice predicted ART initiation at six months (OR=2.74, CI=1.20–6.28). These results suggest the importance of functional social support and network support mobilization for ART initiation among PWID
SHREC 2022 Track on Online Detection of Heterogeneous Gestures
This paper presents the outcomes of a contest organized to evaluate methods
for the online recognition of heterogeneous gestures from sequences of 3D hand
poses. The task is the detection of gestures belonging to a dictionary of 16
classes characterized by different pose and motion features. The dataset
features continuous sequences of hand tracking data where the gestures are
interleaved with non-significant motions. The data have been captured using the
Hololens 2 finger tracking system in a realistic use-case of mixed reality
interaction. The evaluation is based not only on the detection performances but
also on the latency and the false positives, making it possible to understand
the feasibility of practical interaction tools based on the algorithms
proposed. The outcomes of the contest's evaluation demonstrate the necessity of
further research to reduce recognition errors, while the computational cost of
the algorithms proposed is sufficiently low.Comment: Accepted on Computer & Graphics journa
Variations in the Role of Social Support on Disclosure Among Newly Diagnosed HIV-Infected People Who Inject Drugs in Vietnam
Stigma and perceived social support can influence the decision to disclose HIV positive status, especially for people who inject drugs (PWID). In this analysis, the association between social support and HIV disclosure among 336 newly diagnosed HIV-infected PWID in Northern Vietnam was assessed. One month after diagnosis, 34.8% of participants had not disclosed to anyone. Disclosure to anyone and to a family member specifically, was associated with baseline social support in the form of positive interactions and a history of incarceration. Disclosing to a family member was less likely among those who had unprotected sex in the previous 3 months. Disclosure to an injecting partner was more likely among those with a history of being in a drug treatment program, knowing someone on ART and believing that ART is safe. These data suggest that social support may facilitate disclosure among family members, including spouses, while disclosure to injecting partners is greater when PWID know that ART is a safe and viable option
ASSOCIATION BETWEEN HIV KNOWLEDGE AND RISK BEHAVIOR IN PERSONS WHO INJECT DRUGS IN THAI NGUYEN, VIETNAM
In Vietnam, HIV infection is concentrated in key populations including persons who inject drugs (PWID). The majority of PWID can name specific transmission routes of HIV, yet risk behaviors remain high. We conducted a cross-sectional survey of 1355 PWID in Thai Nguyen Province, Vietnam, to and compare their HIV knowledge with their self-reported risk behavior. Broader knowledge of HIV transmission, measured by a higher composite HIV knowledge score, was associated with a 19.5% lower adjusted odds of giving a used needle to another (p=0.011), and 20.4% lower adjusted odds of using a needle that another had used (p=0.001). A higher knowledge score was associated with 13.1% higher adjusted odds of consistent condom use (p=0.083). These results suggest a broader knowledge may reflect characteristics about how individuals obtain knowledge or the way that knowledge is delivered to them, and may be associated with their ability to engage in risk reduction behavior
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