623 research outputs found
Black Womens and Birth Workers Experiences of Disrespect and Abuse in Maternity Care: Findings From a Qualitative Exploratory Research Study in Atlanta, Georgia
Public health research has generated increasingly sophisticated theories and methods for linking the biological to the social, and for understanding how historical and current forms of discrimination, trauma and injustice find expression in health outcomes. Stark racial disparities in maternal mortality and severe maternal morbidity are particularly appropriate for this exploration because women's sexuality and reproduction has always been a crucial battleground for social control of disadvantaged groups, for assertions of biomedical dominance and professional hierarchies, and for humiliationâand selective celebrationâof individuals to further promote specific gender and racial ideologies.Yet, simultaneously, women's sexuality and reproduction has also provided the setting for women to assert their personhood, express their community and cultural solidarity, and define and demand their political and social citizenship. Over the last four decades, women of color have built social movements to link this profound understanding of the personal and political meaning of reproduction to the wider struggle for social justice across a broad range of social institutions where racism finds different forms of expressionâschools, police and courts, voting rights and political representation, media and social discourse. The recent surge of attention to what advocates, scholars, politicians and journalists now routinely call the "Black maternal health crisis" helps to create an important opportunity for research to link to action, indeed for research to be action.This report is just one step towards recognition of the role of racism in maternal health. It describes findings from an exploratory, qualitative research study of Black women's experiences during pregnancy and childbirth in Atlanta, which was conducted in 2018 in partnership between Black Mamas Matter Alliance (BMMA), the Averting Maternal Death and Disability (AMDD) program of Columbia University Mailman School of Public Health, Center for Black Women's Wellness (CBWW), and other local community-based organizations. This was part of a larger study conducted in New York City in 2017 (Freedman et. al., 2020). Specifically, the study in Atlanta sought to understand Black women's perceptions of the disrespect and abuse they experienced during pregnancy and childbirth. By focusing on disrespect and abuse during childbirth, the study links to a wider global movement that is mobilizing around the concept of respectful maternity care (Armbruster et. al., 2011). It also constitutes initial steps in pursuit of a wider agenda led by BMMA and women of color organizations that seek to transform knowledge and how it is generated, and by doing so, build power and shift culture, bending the arc of history toward social justice (Aina et. al., 2019)
Ethical Standards for Human-to-Animal Chimera Experiments in Stem Cell Research
The purpose of this report is to offer investigators and members of SCRO and animal research committees well-grounded ethical standards for evaluating research involving the transfer of multipotent and pluripotent human stem cells and their direct derivatives into animal systems. This report is deliberately written in general terms so that its recommendations can apply to diverse institutions and international settings. Thus, investigators and reviewers should aspire to these proposed ethical standards while exercising appropriate judgment in individual situations
Dyadic Speech-based Affect Recognition using DAMI-P2C Parent-child Multimodal Interaction Dataset
Automatic speech-based affect recognition of individuals in dyadic
conversation is a challenging task, in part because of its heavy reliance on
manual pre-processing. Traditional approaches frequently require hand-crafted
speech features and segmentation of speaker turns. In this work, we design
end-to-end deep learning methods to recognize each person's affective
expression in an audio stream with two speakers, automatically discovering
features and time regions relevant to the target speaker's affect. We integrate
a local attention mechanism into the end-to-end architecture and compare the
performance of three attention implementations -- one mean pooling and two
weighted pooling methods. Our results show that the proposed weighted-pooling
attention solutions are able to learn to focus on the regions containing target
speaker's affective information and successfully extract the individual's
valence and arousal intensity. Here we introduce and use a "dyadic affect in
multimodal interaction - parent to child" (DAMI-P2C) dataset collected in a
study of 34 families, where a parent and a child (3-7 years old) engage in
reading storybooks together. In contrast to existing public datasets for affect
recognition, each instance for both speakers in the DAMI-P2C dataset is
annotated for the perceived affect by three labelers. To encourage more
research on the challenging task of multi-speaker affect sensing, we make the
annotated DAMI-P2C dataset publicly available, including acoustic features of
the dyads' raw audios, affect annotations, and a diverse set of developmental,
social, and demographic profiles of each dyad.Comment: Accepted by the 2020 International Conference on Multimodal
Interaction (ICMI'20
Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era
The LHCb Upgrade II will fully exploit the flavour-physics opportunities of the HL-LHC, and study additional physics topics that take advantage of the forward acceptance of the LHCb spectrometer. The LHCb Upgrade I will begin operation in 2020. Consolidation will occur, and modest enhancements of the Upgrade I detector will be installed, in Long Shutdown 3 of the LHC (2025) and these are discussed here. The main Upgrade II detector will be installed in long shutdown 4 of the LHC (2030) and will build on the strengths of the current LHCb experiment and the Upgrade I. It will operate at a luminosity up to 2Ă1034
cmâ2sâ1, ten times that of the Upgrade I detector. New detector components will improve the intrinsic performance of the experiment in certain key areas. An Expression Of Interest proposing Upgrade II was submitted in February 2017. The physics case for the Upgrade II is presented here in more depth. CP-violating phases will be measured with precisions unattainable at any other envisaged facility. The experiment will probe b â sl+lâand b â dl+lâ transitions in both muon and electron decays in modes not accessible at Upgrade I. Minimal flavour violation will be tested with a precision measurement of the ratio of B(B0 â ÎŒ+ÎŒâ)/B(Bs â ÎŒ+ÎŒâ). Probing charm CP violation at the 10â5 level may result in its long sought discovery. Major advances in hadron spectroscopy will be possible, which will be powerful probes of low energy QCD. Upgrade II potentially will have the highest sensitivity of all the LHC experiments on the Higgs to charm-quark couplings. Generically, the new physics mass scale probed, for fixed couplings, will almost double compared with the pre-HL-LHC era; this extended reach for flavour physics is similar to that which would be achieved by the HE-LHC proposal for the energy frontier
LHCb upgrade software and computing : technical design report
This document reports the Research and Development activities that are carried out in the software and computing domains in view of the upgrade of the LHCb experiment. The implementation of a full software trigger implies major changes in the core software framework, in the event data model, and in the reconstruction algorithms. The increase of the data volumes for both real and simulated datasets requires a corresponding scaling of the distributed computing infrastructure. An implementation plan in both domains is presented, together with a risk assessment analysis
Multidifferential study of identified charged hadron distributions in -tagged jets in proton-proton collisions at 13 TeV
Jet fragmentation functions are measured for the first time in proton-proton
collisions for charged pions, kaons, and protons within jets recoiling against
a boson. The charged-hadron distributions are studied longitudinally and
transversely to the jet direction for jets with transverse momentum 20 GeV and in the pseudorapidity range . The
data sample was collected with the LHCb experiment at a center-of-mass energy
of 13 TeV, corresponding to an integrated luminosity of 1.64 fb. Triple
differential distributions as a function of the hadron longitudinal momentum
fraction, hadron transverse momentum, and jet transverse momentum are also
measured for the first time. This helps constrain transverse-momentum-dependent
fragmentation functions. Differences in the shapes and magnitudes of the
measured distributions for the different hadron species provide insights into
the hadronization process for jets predominantly initiated by light quarks.Comment: All figures and tables, along with machine-readable versions and any
supplementary material and additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-013.html (LHCb
public pages
Study of the decay
The decay is studied
in proton-proton collisions at a center-of-mass energy of TeV
using data corresponding to an integrated luminosity of 5
collected by the LHCb experiment. In the system, the
state observed at the BaBar and Belle experiments is
resolved into two narrower states, and ,
whose masses and widths are measured to be where the first uncertainties are statistical and the second
systematic. The results are consistent with a previous LHCb measurement using a
prompt sample. Evidence of a new
state is found with a local significance of , whose mass and width
are measured to be and , respectively. In addition, evidence of a new decay mode
is found with a significance of
. The relative branching fraction of with respect to the
decay is measured to be , where the first
uncertainty is statistical, the second systematic and the third originates from
the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb
public pages
Measurement of the ratios of branching fractions and
The ratios of branching fractions
and are measured, assuming isospin symmetry, using a
sample of proton-proton collision data corresponding to 3.0 fb of
integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The
tau lepton is identified in the decay mode
. The measured values are
and
, where the first uncertainty is
statistical and the second is systematic. The correlation between these
measurements is . Results are consistent with the current average
of these quantities and are at a combined 1.9 standard deviations from the
predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb
public pages
Escherichia coli as a model active colloid:A practical introduction
The flagellated bacterium Escherichia coli is increasingly used
experimentally as a self-propelled swimmer. To obtain meaningful, quantitative
results that are comparable between different laboratories, reproducible
protocols are needed to control, `tune' and monitor the swimming behaviour of
these motile cells. We critically review the knowledge needed to do so, explain
methods for characterising the colloidal and motile properties of E.coli,
cells, and propose a protocol for keeping them swimming at constant speed at
finite bulk concentrations. In the process of establishing this protocol, we
use motility as a high-throughput probe of aspects of cellular physiology via
the coupling between swimming speed and the proton motive force.Comment: 18 pages, 16 figures, 4 table
The potential of a lecture series in changing intent and experience among health professionals to conduct research in a large hospital: a retrospective pre-post design
Abstract Background Promoting research capacity within public health can encourage and engage employees to undertake research, utilising their understanding of the complex needs that exist within the public health system to provide more relevant research outcomes. Despite this, there are a number of reasons cited by health care professionals as to why research is not undertaken, and a lack of support for research participation results in missed opportunities for experienced clinical and public health staff to gain research experience, expand the evidence base, and promote and support research. The aim of this study is to identify if education in research, delivered through a series of lectures at a large tertiary referral hospital, results in an increase in the experience and intent to conduct research. Methods A series of six lectures to aid in the understanding and development of research were delivered to health employees, health care professionals, students and their associates within a large public Australian hospital. Following these lectures, a validated instrument was developed and asked respondents to assess their research activity, research training history, and experience in conducting research using a retrospective pre/post- test design. Results Over half (57.1%) of respondents (n =â49) reported no previous researcher education training prior to the lectures. Following the lectures, reported researcher experience increased significantly in the areas of writing a research protocol, using qualitative research methods, publishing research, writing and presenting a research report, analysing and interpreting results, using quantitative research methods, generating research ideas, and applying for research funding. At 6âmonths following the lecture series intent to be involved in further research was seen in the areas of submitting an ethics application, analysing qualitative and quantitative research data, and research funding applications. Conclusions Six one hour face to face research lectures can improve self-reported levels of intention to become involved in research as well as research experience amongst hospital health care professionals at 6 months. This traditional modality of education should still be considered as relevant strategy in building research capacity as measured innovatively using a retrospective pre/post test methodology
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