bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enhanced Ultrasonic Imaging and Non-Destructive Evaluation Using Angle-of-Arrival Estimation in Dimension-Reduced Beam Space
Authors: Li Minghui 
Published: March 2020

Abstract
Robust defect detection in the presence of grain noise originating from material microstructures is a challenging yet essential problem in ultrasonic non-destructive evaluation (NDE). In this paper, a novel method is proposed to suppress the gain noise and enhance the defect detection and imaging. The defect echo and grain noise are distinguished through analyzing the spatial location where the echo is originating from. This is achieved by estimation of the angle of arrival (AOA) of the returned echo and evaluation of the likelihood that the echo is reflected from the point where the array is focused or otherwise from the random reflectors like the grain boundaries. The method explicitly addresses the statistical models of the defect echoes and the spatial noise across the array aperture, as well as the correlation between the flaw signal and the interfering echoes; estimates the AOA and the likelihood in a dimension-reduced beam space via a linear transformation; and determines a weighting factor based on the mean likelihood. The factors are then normalized and utilized to correct and weigh the NDE images. Experiments on industrial samples of austenitic stainless steel and INCONEL Alloy 617 are conducted with a 5 MHz transducer array, and the results demonstrate that the grain noise is reduced by about 20 dB while the defect reflection is well retained, thus the great benefits of the method on enhanced defect detection and imaging in ultrasonic NDE are validated.
Geometric Deep Learning for Shape Correspondence in Mass Customization by Three-Dimensional Printing
Authors: Huang Jida , Sun Hongyue , Kwok Tsz-Ho , Zhou Chi , Xu Wenyao 
Published: March 2020

AbstractMany industries, such as human-centric product manufacturing, are calling for mass customization with personalized products. One key enabler of mass customization is 3D printing, which makes flexible design and manufacturing possible. However, the personalized designs bring challenges for the shape matching and analysis, owing to the high complexity and shape variations. Traditional shape matching methods are limited to spatial alignment and finding a transformation matrix for two shapes, which cannot determine a vertex-to-vertex or feature-to-feature correlation between the two shapes. Hence, such a method cannot measure the deformation of the shape and interested features directly. To measure the deformations widely seen in the mass customization paradigm and address the issues of alignment methods in shape matching, we identify the geometry matching of deformed shapes as a correspondence problem. The problem is challenging due to the huge solution space and nonlinear complexity, which is difficult for conventional optimization methods to solve. According to the observation that the well-established massive databases provide the correspondence results of the treated teeth models, a learning-based method is proposed for the shape correspondence problem. Specifically, a state-of-the-art geometric deep learning method is used to learn the correspondence of a set of collected deformed shapes. Through learning the deformations of the models, the underlying variations of the shapes are extracted and used for finding the vertex-to-vertex mapping among these shapes. We demonstrate the application of the proposed approach in the orthodontics industry, and the experimental results show that the proposed method can predict correspondence fast and accurate, also robust to extreme cases. Furthermore, the proposed method is favorably suitable for deformed shape analysis in mass customization enabled by 3D printing.
Proterozoic and Paleozoic evolution of the Blue Ridge geologic province in northern Virginia, USA
Authors: Burton William C. , Schindler J. Stephen 
Published: March 2020

ABSTRACT
This field guide presents a one-day trip across the northern Virginia Blue Ridge geologic province and highlights published geologic mapping of Mesoproterozoic rocks that constitute the core of the Blue Ridge anticlinorium and Neoproterozoic cover-sequence rocks on the fold limbs. The guide presents zircon SHRIMP (sensitive high-resolution ion microprobe) U-Pb crystallization ages of granitoid rocks and discusses the tectonic and petrologic evolution of basement rocks during the Mesoproterozoic. U-Pb data show more of a continuum for Blue Ridge Mesoproterozoic magmatic events, from ca. 1.18–1.05 Ga, than previous U-Pb TIMS (thermal ionization mass spectrometry)-based models that had three distinct episodes of plutonic intrusion. All of the younger dated rocks are found west of the N-S–elongate batholith of the Neoproterozoic Robertson River Igneous Suite, suggesting that the batholith occupies a fundamental Mesoproterozoic crustal boundary that was likely a fault. Narrow belts of paragneiss may represent remnants of pre-intrusive country rock, but some were deposited close to 1 Ga according to detrital zircon U-Pb ages.
For late Neoproterozoic geology, the guide focuses on lithologies and structures associated with early rifting of the Rodinia supercontinent, including small rift basins preserved on the eastern limb of the anticlinorium. These basins have locally thickened packages of clastic metasedimentary rocks that strike into and truncate abruptly against Mesoproterozoic basement along apparent steep normal faults. Both basement and cover were intruded by NE-SE–striking and steeply dipping, few-m-wide diabase dikes that were feeders to late Neoproterozoic Catoctin Formation metabasalt that overlies the rift sediments. The relatively weak dikes facilitated the deformation that led to the formation of the Blue Ridge anticlinorium during the middle to late Paleozoic as the vertical dikes were transposed and rotated during formation of the penetrative cleavage.
Age and tectonic significance of diamictites at the Devonian–Mississippian transition in the central Appalachian Basin
Authors: Ettensohn Frank R. , Seckinger D. Clay , Eble Cortland F. , Clayton Geoff , Li Jun , Martins Gustavo A. , Hodelka Bailee N. , Lo Edward L. , Harris Felicia R. , Taghizadeh Noushin 
Published: March 2020

ABSTRACT
This trip explores three different occurrences of a diamictite-bearing unit in the transition between Upper Devonian redbeds of the Hampshire Formation (alluvial and fluvial deposits) and Mississippian sandstones and mudstones of the Price/Pocono Formations (deltaic deposits). Palynology indicates that all the diamictites examined are in the LE and LN miospore biozones, and are therefore of Late Devonian, but not latest Devonian, age. Their occurrence in these biozones indicates correlation with the Cleveland Member of the Ohio Shale, Oswayo Member of the Price Formation, and Finzel tongue of the Rockwell Formation in the central Appalachian Basin and with a large dropstone (the Robinson boulder) in the Cleveland Member of the Ohio Shale in northeastern Kentucky. Although several lines of evidence already support a glaciogenic origin for the diamictites, the coeval occurrence of the dropstone in open-marine strata provides even more convincing evidence of a glacial origin. The diamictites are all coeval and occur as parts of a shallow-marine incursion that ended Hampshire/Catskill alluvial-plain accumulation in most areas; however, at least locally, alluvial redbed accumulation continued after diamictite deposition ended. The diamictites are parts of nearshore, marginal-marine strata that accumulated during the Cleveland-Oswayo-Finzel transgression, which is related to global eustasy and to foreland deformational loading during the late Acadian orogeny. Detrital zircon data from clasts in a diamictite at Stop 3 (Bismarck, West Virginia) indicate likely Inner Piedmont, Ordovician plutonic sources and suggest major Acadian uplift of Inner Piedmont sources during convergence of the exotic Carolina terrane with the New York and Virginia promontories. Hence, the Acadian orogeny not only generated high mountain source areas capable of supporting glaciation in a subtropical setting, but also through deformational foreland loading, abetted regional subsidence and the incursion of shallow seas that allowed mountain glaciers access to the open sea.
Evaluating the declarations of open defecation free status under the Swachh Bharat (‘Clean India’) Mission: repeated cross-sectional surveys in Rajasthan, India
Authors: Exum Natalie G , Gorin Emma M , Sadhu Goutam , Khanna Anoop , Schwab Kellogg J 
Published: March 2020

BackgroundThe most ambitious sanitation campaign to end open defecation (OD) in India came to a close on 2 October 2019 and there are limited independent, robust data to measure its success. We aimed to evaluate Rajasthan’s claim of open defecation free status in March 2018 under the Swachh Bharat Mission (SBM) or ‘Clean India Mission’ by measuring OD trends from 2016 to 2018.MethodsWe used publicly available data from Performance Monitoring and Accountability 2020, a representative survey with two-stage stratified cluster sampling. Enumeration areas were the primary sampling units selected by the probability proportional ­to ­size method. The repeated cross-sectional surveys independently collected household water and sanitation data in Rajasthan (n=20 485). Among households reporting toilet access, the data were pooled across the four rounds for an observational analysis using logistic regression. The primary outcome measure was regular OD among households with access to toilet facilities.FindingsBetween October 2016 and July 2018 main OD practices in rural Rajasthan households decreased from 63.3% (95% CI 57.0% to 69.6%) to 45.8% (95% CI 38.4% to 53.2%) and in urban households from 12.6% (95% CI 6.0% to 19.1%) to 9.4% (95% CI 4.0% to 14.7%). Households with regular OD occurring despite access to a toilet made up 21.7% (95% CI 16.9% to 26.6%) of rural and 12.1% (95% CI 3.6% to 20.7%) of urban Rajasthan as of July 2018. The multivariate logistic regression revealed that factors related to water stress and sanitation sharing were associated with household members regularly practising OD.ConclusionsThese data highlight the importance of a continued focus on constructing toilets that are affordable with low water requirements during the next phase of SBM. An independent survey that can provide robust estimates of OD is needed to monitor progress of toilet construction and use.
Impact of the test and treat policy on delays in antiretroviral therapy initiation among adult HIV positive patients from six clinics in Johannesburg, South Africa: results from a prospective cohort study
Authors: Onoya Dorina , Sineke Tembeka , Hendrickson Cheryl , Mokhele Idah , Maskew Mhairi , Long Lawrence C , Fox Matthew 
Published: March 2020

ObjectivesTo assess delays to antiretroviral therapy (ART) initiation before and after the Universal Test and Treat (UTT) and the same-day initiation (SDI) of ART policy periods in Johannesburg, South Africa.DesignProspective cohort study.SettingPatients were recruited from six primary health clinics in Johannesburg.ParticipantsOverall, 1029 newly diagnosed HIV positive adults (≥18 years) were consecutively enrolled by referral from the testing counsellor between April and December 2015 (pre-UTT n=146), July and August 2017 (UTT, n=141) and October 2017 and August 2018 (SDI, n=742).Main outcome measuresCox proportional hazards regression was used to assess predictors of 30 days ART initiation. Additionally, predictors of immediate ART initiation were evaluated using Poisson regression.ResultsOverall, 30 days ART proportions were 71.9% overall, 36.9% pre-UTT (44.3% of those eligible), 65.9% under UTT and 79.9% under the SDI policy. The median days to ART initiation declined from 21 pre-UTT (IQR: 15–30) to 8 (IQR: 6–16) under UTT and 5 days (IQR: 0–8) under the SDI policy. However, only 150 (20.2%) of the SDI cohort-initiated ART immediately after HIV diagnosis. Living in a two-adult home (adjusted HR (aHR) 1.2 vs living alone, 95% CI 1.0 to 1.5) increased the likelihood of 30-day ART. Missing baseline cluster of differentiation four (CD4) data decreased the likelihood of 30 days ART by 40% (aHR 0.6 vs CD4 <350 cells/µL, 95% CI 0.5 to 0.7). More women took up immediate ART (adjusted relative risk (aRR) 1.3, 95% CI 1.0 to 1.9). Participants ≥40 years (aRR 0.6 vs 18–24 years, 95% CI 0.4 to 0.9) were less likely to start ART immediately after HIV diagnosis. However, immediate ART rates increased with longer policy implementation time (aRR 0.2 for <3 months vs >10 months, 95% CI 0.1 to 0.4).ConclusionsThe study results highlight a positive move towards earlier ART initiation during the UTT and SDI periods and emphasise a need to increase same-day ART implementation further.
Cognitive–behavioural group therapy for adolescents with ADHD: study protocol for a randomised controlled trial
Authors: Nøvik Torunn Stene , Haugan Anne-Lise Juul , Lydersen Stian , Thomsen Per Hove , Young Susan , Sund Anne Mari 
Published: March 2020

IntroductionPersistence of attention deficit hyperactivity disorder (ADHD) into adolescence is a significant burden to patients. Clinical guidelines recommend non-pharmacological therapies, but the evidence to support this recommendation is sparse. This study aims to evaluate the effect of a 12-week group cognitive–behavioural therapy (CBT) programme for adolescents with ADHD aged 14–18 years, who still have impairing symptoms after treatment with medication. We will study the effect of the treatment on ADHD symptoms and examine moderators and mediators of the effect of the treatment on ADHD.Methods and analysisWe conduct a randomised controlled trial of CBT group therapy in adolescents with ADHD recruited from child psychiatric outpatient units in Mid-Norway. 99 adolescents who met inclusion criteria and consented to participation have been randomised to a 12-week group intervention or to a control group receiving treatment as usual. Assessments are made at admission to the clinic, preintervention, postintervention and at a 9-month follow-up, obtaining adolescent, parent and teacher reports. Clinicians blinded to group allocation rate all participants as to their functioning preintervention and at the two postintervention assessment points. The primary outcome is change in symptom scores on the ADHD Rating Scale-IV.Ethics and disseminationThe Regional Committee for Medical and Health Research Ethics in South East Norway approved the study protocol (2015/2115). We will disseminate the findings in peer-reviewed publications and conference presentations, to user organisations and at courses attended by families and professionals. Two PhD students will publish and defend dissertations relating to the study. Planned publications include primary and secondary outcomes and patient satisfaction with the treatment. Furthermore, we plan to publish a manual of CBT group therapy in adolescent ADHD to benefit treatment of patients in Norway and elsewhere.Trial registration numberNCT02937142
Factors impacting on retention, success and equitable participation in clinical academic careers: a scoping review and meta-thematic synthesis
Authors: Vassie Claire , Smith Sue , Leedham-Green Kathleen 
Published: March 2020

ObjectivesTo examine and synthesise current evidence on the factors that affect recruitment, retention, participation and progression within the clinical academic pathway, focusing on equitable participation across protected characteristics including gender, ethnicity and sexual orientation.DesignScoping review and meta-thematic synthesis.Data sourcesWeb of Science, Google Scholar.Article selectionWe conducted a scoping review of English language articles on factors affecting recruitment, retention, progression and equitable participation in clinical academic careers published in North America, Australasia and Western Europe between January 2005 and April 2019. The most recent and relevant 39 articles were selected for meta-thematic synthesis using detailed inclusion/exclusion criteria.Data extractionThe articles were purposively sampled to cover protected characteristics and career stages and coded for factors related to equitable participation. 17 articles were fully coded. No new themes arose after nine papers. Themes and higher level categories were derived through an iterative consensual process.Results13 discrete themes of factors impacting on equitable participation were identified including societal attitudes and expectations; national and organisational policies, priorities and resourcing; academic and clinical workplace cultures; supportive, discriminatory and compensatory interpersonal behaviours and personal factors related to social capital, finances, competing priorities, confidence and ambition, and orientation to clinical, academic and leadership roles.ConclusionsThe broad and often interconnected nature of these factors suggests that interventions will need to address structural and cultural factors as well as individual needs. In addition to standard good practice on equality and diversity, we suggest that organisations provide equitable support towards early publication success and targeted mentoring; address financial and role insecurity; address the clinical workplace culture; mitigate clinical–academic–personal role conflicts and overload; ensure that promotional structures and processes encourage diverse applicants and promote family-friendly, coherent and transparent national career pathways.
Androgen deprivation therapy and the risk of iron-deficiency anaemia among patients with prostate cancer: a population-based cohort study
Authors: Wu Fang-Jen , Li I-Hsun , Chien Wu-Chien , Shih Jui-Hu , Lin Yi-Chun , Chuang Chin-Min , Cheng Yih-Dih , Kao Li-Ting 
Published: March 2020

ObjectivesThe administration of androgen deprivation therapy (ADT) to patients with metastatic prostate cancer might be associated with some adverse effects such as anaemia; however, few studies have been performed in East Asian populations. This study aimed to investigate the association between ADT and iron-deficiency anaemia (IDA) among patients with prostate cancer in a population-based nationwide cohort.DesignCohort study.SettingTaiwan.ParticipantsData for the cohort study were retrieved from the Taiwan National Health Insurance Research Database. Propensity score matching was used to select 7262 patients with prostate cancer who received ADT as the study group and 3631 patients who did not receive ADT as the control group.Primary and secondary outcome measuresThis study individually tracked patients over a 3-year study period and identified those who were subsequently diagnosed with IDA following the index date.ResultsThe incidence rates of IDA in the study and control groups were 1.66 (95% CI CI 1.45 to 1.86) and 1.01 per 100 person-years (95% CI 0.78 to 1.25), respectively. Furthermore, proportional Cox regression revealed an HR of 1.62 (95% CI 1.24 to 2.12) for IDA in the study group after adjusting for patients’ age, monthly income, geographic location, residential urbanisation level and incidence of hyperlipidaemia, diabetes, hypertension, coronary heart disease, inflammatory bowel disease, other cancers and gastrointestinal bleeding.ConclusionCompared with its non-use among patients with prostate cancer, ADT use was associated with a higher risk of IDA.
Built environment changes and active transport to school among adolescents: BEATS Natural Experiment Study protocol
Authors: Mandic Sandra , Hopkins Debbie , García Bengoechea Enrique , Moore Antoni , Sandretto Susan , Coppell Kirsten , Ergler Christina , Keall Michael , Rolleston Anna , Kidd Gavin , Wilson Gordon , Spence John C 
Published: March 2020

IntroductionNatural experiments are considered a priority for examining causal associations between the built environment (BE) and physical activity (PA) because the randomised controlled trial design is rarely feasible. Few natural experiments have examined the effects of walking and cycling infrastructure on PA and active transport in adults, and none have examined the effects of such changes on PA and active transport to school among adolescents. We conducted the Built Environment and Active Transport to School (BEATS) Study in Dunedin city, New Zealand, in 2014–2017. Since 2014, on-road and off-road cycling infrastructure construction has occurred in some Dunedin neighbourhoods, including the neighbourhoods of 6 out of 12 secondary schools. Pedestrian-related infrastructure changes began in 2018. As an extension of the BEATS Study, the BEATS Natural Experiment (BEATS-NE) (2019–2022) will examine the effects of BE changes on adolescents’ active transport to school in Dunedin, New Zealand.Methods and analysisThe BEATS-NE Study will employ contemporary ecological models for active transport that account for individual, social, environmental and policy factors. The published BEATS Study methodology (surveys, accelerometers, mapping, Geographic Information Science analysis and focus groups) and novel methods (environmental scan of school neighbourhoods and participatory mapping) will be used. A core component continues to be the community-based participatory approach with the sustained involvement of key stakeholders to generate locally relevant data, and facilitate knowledge translation into evidence-based policy and planning.Ethics and disseminationThe BEATS-NE Study has been approved by the University of Otago Ethics Committee (reference: 17/188). The results will be disseminated through scientific publications and symposia, and reports and presentations to stakeholders.Trial registration numberACTRN12619001335189.
Using and implementing care bundles for patients with acute admission for COPD: qualitative study of healthcare professionals’ experience in four hospitals in England
Authors: Shaw Ali , Morton Katherine , King Anna , Chalder Melanie , Calvert James , Jenkins Sue , Purdy Sarah 
Published: March 2020

BackgroundCare bundles are sets of evidence-based interventions to improve quality of hospital care at admission and discharge. Within a wider multi-method evaluation of care bundles for adults with an emergency admission for acute exacerbations of chronic obstructive pulmonary disease, a qualitative study was conducted. The aim was to evaluate how bundles were used, and healthcare professionals’ experiences of the impact of bundles on the process of care delivery.MethodsWithin the wider evaluation, four acute hospitals that were using COPD care bundles were purposefully sampled for geographical variation. Qualitative data were gathered through non-participant observation of patient care and interviews with healthcare professionals, patients and carers. This paper reports a thematic analysis of data from observation and interviews with professionals.ResultsHealthcare professionals generally experienced care bundles as positive for standardising working practices and patient care, valuing how bundles could support a clear care pathway for patients, enable transitions between settings and identify postdischarge support required by patients. Successful use of bundles was perceived as more likely with the presence of either (or both) a clinical champion for bundles and system-based initiatives such as financial incentives, within a local culture of quality improvement. Challenges in accurately diagnosing COPD hampered bundle use, including delivery of bundles to those subsequently considered ineligible, or missed opportunities to deliver admission bundles to those with COPD.ConclusionCare bundles shape admission and discharge care processes for patients with COPD, from the perspective of staff involved in their delivery. However, different organisational, staff and clinical factors aid or hinder bundle use in an acute hospital context, suggesting potentially resolvable reasons for variable implementation of bundles. Finally, bundles may enhance staff experience of care delivery, even if the impact on patient outcomes remains uncertain.