6,994 research outputs found
A Third-order and a Fourth-order Iteration Process for Nonlinear Equations
Convergence proof and procedure for third-order and fourth-order iteration process for nonlinear equations - Newton-Raphson second-order iteratio
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Assessing physical symptoms during the postpartum period: reliability and validity of the primary health questionnaire somatic symptom subscale (PHQ-15)
© 2017 Informa UK Limited, trading as Taylor & Francis GroupIntroduction: This study aimed at establishing the reliability and validity of the primary health questionnaire (PHQ-15) somatic symptom severity subscale for postpartum women. Methods: Women (Nâ=â495) completed the PHQ-15 approximately 6 weeks postpartum during the baseline phase of a randomized controlled trial evaluating a writing intervention for postnatal health in England. Reliability was assessed using internal consistency statistics and convergent validity by comparing differences in self-reported physical health, health-related quality of life (QoL) and primary care usage by PHQ-15 symptom severity category. Results: Cronbachâs α for the PHQ-15 was 0.73 and item-total statistics met recommended guidelines. Validity analyzes showed 6% of women reported severe symptoms, 17% medium, 50% low and 27% minimal symptoms. Women with severe symptoms reported poorer overall physical health, poorer physical health-related QoL and greater use of primary care. Women with severe symptoms also rated their babyâs health as worse and used primary care more for their baby. Discussion: This study suggests the PHQ-15 has the potential to be a useful and valid measure of physical symptoms in postpartum women in high-income countries
Study of Giant Pairing Vibrations with neutron-rich nuclei
We investigate the possible signature of the presence of giant pairing states
at excitation energy of about 10 MeV via two-particle transfer reactions
induced by neutron-rich weakly-bound projectiles. Performing particle-particle
RPA calculations on Pb and BCS+RPA calculations on Sn, we
obtain the pairing strength distribution for two particles addition and removal
modes. Estimates of two-particle transfer cross sections can be obtained in the
framework of the 'macroscopic model'. The weak-binding nature of the projectile
kinematically favours transitions to high-lying states. In the case of (~^6He,
\~^4He) reaction we predict a population of the Giant Pairing Vibration with
cross sections of the order of a millibarn, dominating over the mismatched
transition to the ground state.Comment: Talk presented in occasion of the VII School-Semina r on Heavy Ion
Physics hosted by the Flerov Laboratory (FLNR/JINR) Dubna, Russia from May 27
to June 2, 200
Noncommutative resolutions of ADE fibered Calabi-Yau threefolds
In this paper we construct noncommutative resolutions of a certain class of Calabi-Yau threefolds studied by F. Cachazo, S. Katz and C. Vafa. The threefolds under consideration are fibered over a complex plane with the fibers being deformed Kleinian singularities. The construction is in terms of a noncommutative algebra introduced by V. Ginzburg, which we call the "N=1 ADE quiver algebra"
Developing a 3D geometry for Urban energy modelling of Indian cities
The advancement in the field of Urban Building Energy
Modelling (UBEM) is assisting urban planners and
managers to design and operate cities to meet
environmental emission targets. The usefulness of the
UBEM depends upon the quality and level of details
(LoD) of the inputs to the model. The inadequacy and
quality of relevant input data pose challenges. This paper
analyses the usefulness of different methodologies for
developing a 3D building stock model of Ahmedabad,
India, recognizing data gaps and heterogenous
development of the city over time. It evaluates the
potentials, limitations, and challenges of remote sensing
techniques namely (a) Satellite imagery (b) LiDAR and
(c) Photogrammetry for this application. Further, the
details and benefits of data capturing through UAV
assisted Photogrammetry technique for the development
of the 3D city model are discussed. The research develops
potential techniques for feature detection and model
reconstruction using Computer vision on the
Photogrammetry reality mesh. Preliminary results
indicate that the use of supervised learning for Image
based segmentation on the reality mesh detects building
footprints with higher accuracy as compared to geometrybased segmentation of the point cloud. This methodology
has the potential to detect complex building features and
remove redundant objects to develop the semantic model
at different LoDs for urban simulations. The framework
deployed and demonstrated for the part of Ahmedabad
has a potential for scaling up to other parts of the city and
other Indian cities having similar urban morphology and
no previous data for developing a UBEM
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What are women stressed about after birth?
Background
Having a baby is associated with a variety of stressors, change, and adjustment. This study aimed to identify what women find stressful during the early postpartum period in contemporary Western society.
Methods
Women (n = 148) 6â12 weeks postpartum wrote anonymously about a situation they found stressful as part of the Health after Birth Trial (HABiT) of expressive writing. Transcripts were analyzed for categories of stressors and crossâcutting themes.
Results
Five categories of stressors were identified. Stressors in pregnancy, labor, and the early postpartum period (49.3%) included physical and emotional difficulties, and insensitive treatment by health professionals. Stressors related to adjusting to life with a baby (35.8%) included difficulties coping with a new baby, parenting, juggling responsibilities, changes to physical health, and loneliness. Stressors related to the baby's health (32.4%) included infant digestive problems, acute health problems, longâterm impact, and neonatal intensive care unit experiences. Stressors related to breastfeeding (23.7%) included pressure to breastfeed, feeling like a âbad mumâ for not breastfeeding, or wanting to breastfeed and not being able to. Other stressors related to changing relationships (18.2%): with their partner, children, and other family members. Crossâcutting themes that emerged in different stressor categories were women making negative selfâappraisals (eg, a bad mum, failure), feeling guilty, and lack of support from others.
Discussion
Our findings emphasize the importance of exploring stressors and psychological wellâbeing with women to provide support, help women's adjustment postpartum, and ensure interventions are offered when appropriate
Biosensors for the monitoring of harmful algal blooms
Peer Reviewed Paper.
DOI: https://doi.org/10.1016/j.copbio.2017.02.018
Citation: McPartlin, D. A., Loftus, J. H., Crawley, A. S., Silke, J., Murphy, C. S., & OâKennedy, R. J. (2017). Biosensors for the monitoring of harmful algal blooms. Current Opinion in Biotechnology, 45, 164â169. https://doi.org/10.1016/j.copbio.2017.02.018Harmful algal blooms (HABs) are a major global concern due to their propensity to cause environmental damage, healthcare issues and economic losses. In particular, the presence of toxic phytoplankton is a cause for concern. Current HAB monitoring programs often involve laborious laboratory-based analysis at a high cost and with long turnaround times. The latter also hampers the potential to develop accurate and reliable models that can predict HAB occurrence. However, a promising solution for this issue may be in the form of remotely deployed biosensors, which can rapidly and continuously measure algal and toxin levels at the point-of-need (PON), at a low cost. This review summarises the issues HABs present, how they are difficult to monitor and recently developed biosensors that may improve HAB-monitoring challenges
WHO guidelines on fluid resuscitation in children: missing the FEAST data.
The World Health Organization recommendations on management of common childhood illnesses affect the lives of millions of children admitted to hospital worldwide. Its latest guidelines,1 released in May 2013, continue to recommend rapid fluid resuscitation for septic shock, even though the only large controlled trial of this treatment (Fluid Expansion as a Supportive Treatment (FEAST) found that it increased the risk of death in African children.2 A subsequent systematic review of bolus resuscitation in children with shock resulting from severe infection also did not support its use.3 Failure to take this evidence into account is not consistent with WHOâs commitment to systematically and transparently assess evidence using the GRADE (Grading of Recommendations Assessment, Development and Evaluation) process when producing guidelines and could endanger the lives of children
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