bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental quantification of bedrock abrasion under oscillatory flow
Authors: Bramante James F. , Perron J. Taylor , Ashton Andrew D. , Donnelly Jeffrey P. 
Published: March 2020

Abstract
Although wave-driven abrasion of submarine bedrock affects the evolution of rocky coasts and reefs globally, the dependence of the abrasion rate on wave forcing and sediment availability remains poorly quantified. We performed experiments in which an artificial substrate was abraded by varying amounts of coarse-grained sediment subjected to oscillatory flows. In these experiments, the bedrock incision rate scaled by the square of bedrock tensile strength (I, m yr–1 MPa2) varied with mean root-mean-square (rms) velocity (&lt;urms&gt;, m s–1) according to a power law, I = 1.0&lt;urms&gt;4.2 (angle brackets indicate time-averaging over an entire experiment). Additionally, the relationship between sediment load and bedrock incision rate demonstrates tools and cover effects similar to abrasion in fluvial environments, such that incision is fastest at intermediate sediment loads. However, because oscillatory flows accumulate sediment into bedforms, the increased bedrock exposure reduces the efficiency of the cover effect for high sediment loads relative to unidirectional flow. Our results provide an empirical model that can be used to predict bedrock incision rates in nearshore environments based on wave forcing.
Permeability of polydisperse magma foam
Authors: Vasseur Jérémie , Wadsworth Fabian B. , Dingwell Donald B. 
Published: March 2020

AbstractEffective models for the evolution of magma permeability are key to understanding shallow magma ascent and eruption dynamics. Models are generally empirical constructs, commonly focused on monodisperse systems, and unable to cope with the foam limit at high porosity. Here, we confirm that bubble size distributions in high-porosity pyroclasts are highly polydisperse. We combine collated experimental data and numerical simulations to test and validate a theoretically grounded percolation model for isotropic magma permeability, which accounts for the effect of polydispersivity of bubble sizes. We find that the polydispersivity controls the percolation threshold. It also serves as essential input into the scaling of permeability that is required to achieve universality in the description of permeability. Our model performs well against collated published data for the permeability of high-porosity volcanic rocks. We then extend this model to predict the viscous and inertial contributions to fluid flow that are required to model magma outgassing in all regimes. Our scaling relationship holds across the full range of porosity, from the percolation threshold to the open-foam limit.
Comparison of staff and resident health status ratings in care homes
Authors: Benson Tim , Bowman Clive 
Published: March 2020

BackgroundMany care home residents cannot self-report their own health status. Previous studies have shown differences between staff and resident ratings. In 2012, we collected 10 168 pairs of health status ratings using thehowRuhealth status measure. This paper examines differences between staff and resident ratings.MethodHowRuis a short generic person-reported outcome measure with four items: pain or discomfort (discomfort), feeling low or worried (distress), limited in what you can do (disability) and require help from others (dependence). A summary score (howRuscore) is also calculated. Mean scores are shown on a 0–100 scale. High scores are better than low scores. Differences between resident and staff reports (bias) were analysed at the item and summary level by comparing distributions, analysing correlations and a modification of the Bland-Altman method.Results and conclusionsDistributions are similar superficially but differ statistically. Spearman correlations are between 0.55 and 0.67. For items, more than 92.9% of paired responses are within one class; for thehowRusummary score, 66% are within one class. Mean differences (resident score minus staff score) on 0–100 scale are pain and discomfort (−1.11), distress (0.67), discomfort (1.56), dependence (3.92) andhowRusummary score (1.26). The variation is not the same for different severities. At higher levels of pain and discomfort, staff rated their discomfort and distress as better than residents. On the other hand, staff rated disability and dependence as worse than did residents. This probably reflects differences in perspectives. Red amber green (RAG) thresholds of 10 and 5 points are suggested for monitoring changes in care home mean scores.
Cross-sectional study of surgical quality with a novel evidence-based tool for low-resource settings
Authors: Roa Lina , Citron Isabelle , Ramos Jania A , Correia Jessica , Feghali Berenice , Amundson Julia R , Saluja Saurabh , Alonso Nivaldo , Vaz Ferreira Rodrigo 
Published: March 2020

BackgroundAdverse events from surgical care are a major cause of death and disability, particularly in low-and-middle-income countries. Metrics for quality of surgical care developed in high-income settings are resource-intensive and inappropriate in most lower resource settings. The purpose of this study was to apply and assess the feasibility of a new tool to measure surgical quality in resource-constrained settings.MethodsThis is a cross-sectional study of surgical quality using a novel evidence-based tool for quality measurement in low-resource settings. The tool was adapted for use at a tertiary hospital in Amazonas, Brazil resulting in 14 metrics of quality of care. Nine metrics were collected prospectively during a 4-week period, while five were collected retrospectively from the hospital administrative data and operating room logbooks.Results183 surgeries were observed, 125 patient questionnaires were administered and patient charts for 1 year were reviewed. All metrics were successfully collected. The study site met the proposed targets for timely process (7 hours from admission to surgery) and effective outcome (3% readmission rate). Other indicators results were equitable structure (1.1 median patient income to catchment population) and equitable outcome (2.5% at risk of catastrophic expenditure), safe outcome (2.6% perioperative mortality rate) and effective structure (fully qualified surgeon present 98% of cases).ConclusionIt is feasible to apply a novel surgical quality measurement tool in resource-limited settings. Prospective collection of all metrics integrated within existing hospital structures is recommended. Further applications of the tool will allow the metrics and targets to be refined and weighted to better guide surgical quality improvement measures.
Fall prevention implementation strategies in use at 60 United States hospitals: a descriptive study
Authors: Turner Kea , Staggs Vincent , Potter Catima , Cramer Emily , Shorr Ronald , Mion Lorraine C 
Published: March 2020

BackgroundTo guide fall prevention efforts, United States organisations, such as the Joint Commission and the Agency for Healthcare Research and Quality, have recommended organisational-level implementation strategies: leadership support, interdisciplinary falls committees, electronic health record tools, and staff, family and patient education. It is unclear whether hospitals adhere to such strategies or how these strategies are operationalised.ObjectiveTo identify and describe the prevalence of specific hospital fall prevention implementation strategies.MethodsIn 2017, we surveyed 80 US hospitals participating in the National Database of Nursing Quality Indicators who volunteered for the study. We conducted descriptive statistics by calculating percentages for categorical variables and the median and IQR for count variables.ResultsA total of 60/80 (75%) of hospitals completed the survey. The majority of hospitals were not-for-profit (98%) and urban (90%); more than half were Magnet (53%), small (53%) and teaching (52%). Hospitals were more likely to use leadership strategies, such as updating fall policies in the past 3 years (98%) but less likely to reward staff (40%). Hospitals commonly used interdisciplinary falls committees (83%) but membership rarely included physicians. Hospitals lacked access to electronic health record tools, such as high-risk medication warnings (27%). Education strategies were commonly used; 100% of hospitals provided fall education at staff orientation, but only 22% educated all employees (not just nursing staff).ConclusionsOur study is the first to our knowledge to examine which expert-recommended implementation strategies are being used and how they are being operationalised in US hospitals. Future studies are needed to document fall prevention implementation strategies in detail and to test which implementation strategies are most effective at reducing falls. Additionally, research is needed to evaluate the quality of implementation (eg, fidelity) of fall prevention interventions.
Does virtual reality training improve veterinary students’ first canine surgical performance?
Authors: Hunt Julie A , Heydenburg Matthew , Anderson Stacy L , Thompson R Randall 
Published: March 2020

BackgroundVirtual reality (VR) applications are effective tools in many educational disciplines. A minimally interactive VR application allowing stereoscopic viewing of surgical videos has been developed to aid veterinary students learning to perform surgery. We sought to describe how students used the VR application while preparing to perform their first canine sterilisation surgery and compare surgical performance of students who prepared using traditional methods with students who also used VR.MethodsThird‐year veterinary students (n=44) were randomised into control and VR groups in a parallel superiority randomised controlled trial. All were given lectures, videos and skills practice on models. VR group students were also given a VR application and headset to view stereoscopic surgical videos. Blinded raters scored a subset of students (n=19) as they performed their first canine ovariohysterectomy.Results and conclusionsGroups spent similar time preparing to perform surgery, potentially because of the rigour of students’ non‐surgical course load. When VR training was added to an already comprehensive surgical skills curriculum, students watched VR videos for a median of 90 min. Groups did not differ in surgical performance scores or time. A larger study of the VR application with prescribed use guidelines would be a helpful subsequent study.
Progress in integrative systems biology, physiology and medicine: towards a scale-relative biology
Authors: Auffray Charles , Noble Denis , Nottale Laurent , Turner Philip 
Published: March 2020

AbstractIn this paper we present a review of progress in addressing the challenge to understand and describe the vast complexity and multi-level organisation associated with biological systems. We begin with a review of past and current approaches, key lessons, and unresolved challenges, which require a new conceptual framework to address them. After summarizing the core of the problem, which is linked to computational complexity, we review recent developments within the theoretical framework of scale relativity, which offers new insights into the emergence of structure and function (at multiple scales), providing a new integrative approach to biological systems. The theoretical framework describes the critical role of thermodynamics and quantum vacuum fluctuations in the emergence of charge-induced macroscopic quantum fields (effectively a new quantum field theory) at multiple scales, which underpin a macroscopic quantum description of biological systems as a complex exemplar of condensed matter. The theory is validated through a new biomimetic experimental approach, which leads to the emergence of plant and individual cell-like structures with the intrinsic capacity to divide, differentiate and form multicellular structures. We discuss how this theoretical framework could be applied to extend our understanding of cardiac systems biology and physiology, and challenges such as cancer and neurodegenerative disease. We also consider the potential of these new insights to support a new approach to the development of emerging quantum technologies.
An update on fine-tunings in the triple-alpha process
Authors: Lähde Timo A. , Meißner Ulf-G. , Epelbaum Evgeny 
Published: March 2020

AbstractThe triple-alpha process, whereby evolved stars create carbon and oxygen, is believed to be fine-tuned to a high degree. Such fine-tuning is suggested by the unusually strong temperature dependence of the triple-alpha reaction rate at stellar temperatures. This sensitivity is due to the resonant character of the triple-alpha process, which proceeds through the so-called “Hoyle state” of$${}^{12}\mathrm{C}$$12Cwith spin-parity$$0^+$$0+. The question of fine-tuning can be studied within theab initioframework of nuclear lattice effective field theory, which makes it possible to relate ad hoc changes in the energy of the Hoyle state to changes in the fundamental parameters of the nuclear Hamiltonian, which are the light quark mass$$m_q$$mqand the electromagnetic fine-structure constant$$\alpha _\mathrm{em}$$αem. Here, we update the effective field theory calculation of the sensitivity of the triple-alpha process to small changes in the fundamental parameters. In particular, we consider recent high-precision lattice QCD calculations of the nucleon axial coupling$$g_A$$gA, as well as new and more comprehensive results from stellar simulations of the production of carbon and oxygen. While the updated stellar simulations allow for much larger ad hoc shifts in the Hoyle state energy than previously thought, recent lattice QCD results for the nucleon S-wave singlet and triplet scattering lengths now disfavor the “no fine-tuning scenario” for the light quark mass$$m_q$$mq.
The study on coffee slag/recycled polystyrene circulation materials and its application on blinds
Authors: Kuan Hsu-Chiang , Chiang Chin-Lung , Shen Ming-Yuan , Kuan Chen-Feng 
Published: March 2020

In this study, we combine the coffee slag, metal powder with recycled petrochemical plastics (polystyrene, PS) to prepare circulation composite materials. It is an energy saving and carbon footprint reduction composite material compared with traditional one. The resulted PS/coffee composite has tensile strength 117.5 kgf/cm2 and flexural strength is 314.2 kgf/cm2. The heat deflection temperature (HDT) is 92[Formula: see text]C and the UV test fits the ASTM G154 requirement. The metal gross composite is with tensile strength 318.8 kgf/cm2 and flexural strength is 581.6 kgf/cm2. The HDT is 91[Formula: see text]C and the UV test fits the ASTM G154 requirement as well. Its reuse ratio can reach 85% for recycled PS. The resultant product has metal texture blinds with metal gross and wood-like blinds with coffee aroma flavor.
SmokingOpp
Authors: Chatterjee Soujanya , Moreno Alexander , Lizotte Steven Lloyd , Akther Sayma , Ertin Emre , Fagundes Christopher P , Lam Cho , Rehg James M. , Wan Neng , Wetter David W. , Kumar Santosh 
Published: March 2020

Context plays a key role in impulsive adverse behaviors such as fights, suicide attempts, binge-drinking, and smoking lapse. Several contexts dissuade such behaviors, but some may trigger adverse impulsive behaviors. We define these latter contexts as 'opportunity' contexts, as their passive detection from sensors can be used to deliver context-sensitive interventions.
In this paper, we define the general concept of 'opportunity' contexts and apply it to the case of smoking cessation. We operationalize the smoking 'opportunity' context, using self-reported smoking allowance and cigarette availability. We show its clinical utility by establishing its association with smoking occurrences using Granger causality. Next, we mine several informative features from GPS traces, including the novel location context of smoking spots, to develop the SmokingOpp model for automatically detecting the smoking 'opportunity' context. Finally, we train and evaluate the SmokingOpp model using 15 million GPS points and 3,432 self-reports from 90 newly abstinent smokers in a smoking cessation study.
Quantifying the Relationships between Everyday Objects and Emotional States through Deep Learning Based Image Analysis Using Smartphones
Authors: Darvariu Victor-Alexandru , Convertino Laura , Mehrotra Abhinav , Musolesi Mirco 
Published: March 2020

There has been an increasing interest in the problem of inferring emotional states of individuals using sensor and user-generated information as diverse as GPS traces, social media data and smartphone interaction patterns. One aspect that has received little attention is the use of visual context information extracted from the surroundings of individuals and how they relate to it. In this paper, we present an observational study of the relationships between the emotional states of individuals and objects present in their visual environment automatically extracted from smartphone images using deep learning techniques.
We developed MyMood, a smartphone application that allows users to periodically log their emotional state together with pictures from their everyday lives, while passively gathering sensor measurements. We conducted an in-the-wild study with 22 participants and collected 3,305 mood reports with photos. Our findings show context-dependent associations between objects surrounding individuals and self-reported emotional state intensities. The applications of this work are potentially many, from the design of interior and outdoor spaces to the development of intelligent applications for positive behavioral intervention, and more generally for supporting computational psychology studies.
15 PhD positions in GRAPES
Authors: Emiris Ioannis 
Published: March 2020

We are pleased to announce 15 open PhD Positions within the new European Network GRAPES: Learning, Processing and Optimising Shapes. GRAPES is a Marie Sk lodowska-Curie Innovative Training Network in the framework of H2020, started on December 1st, 2019, and lasting for 4 years. It includes 11 academic/industrial groups o.ering 15 PhD's, and 6 associated partners; it is coordinated by ATHENA Research & Innovation Center, Greece.
GRAPES aims at advancing the state-of-the-art in Mathematics, Computer-Aided Design, and Machine Learning, in order to promote game changing approaches for generating, optimising, and learning 3D shapes, along with a multisectoral training for young researchers, supported by the active participation of SMEs. Recent advances in the above domains have solved numerous tasks concerning multimedia and 2D data. However, automation of 3D geometry processing and analysis lags severely behind, despite their importance in science, technology and everyday life, and some well-understood underlying mathematical principles. Concrete applications include simulation, manufacturing and 3D printing, visualisation and naval design, retrieval and mining, reconstruction and urban planning.
Outcomes of Transcatheter Aortic Valve Replacement in Patients With Bicuspid Aortic Valve Disease
Authors: Halim Sharif A. , Edwards Fred H. , Dai David , Li Zhuokai , Mack Michael J. , Holmes David R. , Tuzcu E. Murat , Thourani Vinod H. , Harrison J. Kevin , Brennan J. Matthew 
Published: March 2020

Background:
Patients with bicuspid aortic valve (AV) stenosis were excluded from the pivotal evaluations of transcatheter AV replacement (TAVR) devices. We sought to evaluate the outcomes of TAVR in patients with bicuspid AV stenosis in comparison with those with tricuspid AV stenosis.

Methods:
We used data from the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry (November 2011 through November 2018) to determine device success, procedural outcomes, post-TAVR valve performance, and in-hospital clinical outcomes (mortality, stroke, and major bleeding) according to valve morphology (bicuspid versus tricuspid). Results were stratified by older and current (Sapien 3 and Evolut R) generation valve prostheses. Medicare administrative claims were used to evaluate mortality and stroke to 1 year among eligible individuals (≥65 years).

Results:

After exclusions, there were 170 959 eligible procedures at 593 sites during the specified interval. Of these, 5412 TAVR procedures (3.2%) were performed in patients with bicuspid AV, including 3705 with current-generation devices. In comparison with patients with tricuspid valves, patients with bicuspid AV were younger and had a lower Society of Thoracic Surgeons Predicted Risk of Operative Mortality score. When current-generation devices were used to treat patients with bicuspid AV, device success increased (93.5 versus 96.3;
P
=0.001) and the incidence of 2+ aortic insufficiency declined (14.0% versus 2.7%;
P
<0.001) in comparison with older-generation devices. With current-generation devices, device success was slightly lower in the bicuspid (versus tricuspid) AV group (96.3% in bicuspid versus 97.4% in tricuspid,
P
=0.07), with a slightly higher incidence of residual moderate or severe aortic insufficiency among patients with bicuspid AV (2.7% versus 2.1%;
P
<0.001). A lower 1-year adjusted risk of mortality (hazard ratio, 0.88 [95% CI, 0.78–0.99]) was observed for patients with bicuspid AV versus patients with tricuspid AV in the Medicare-linked cohort, whereas no difference was observed in the 1-year adjusted risk of stroke (hazard ratio, 1.14 [95% CI, 0.94–1.39]).

Conclusions:
Using current-generation devices, procedural, postprocedural, and 1-year outcomes were comparable following TAVR for bicuspid AV versus tricuspid AV disease. With newer-generation devices, TAVR is a viable treatment option for patients with bicuspid AV disease.
Smoking Paradox in Stroke Survivors?
Authors: Wang Hao-Kuang , Huang Chih-Yuan , Sun Yuan-Ting , Li Jie-Yuan , Chen Chih-Hung , Sun Yu , Liu Chung-Hsiang , Lin Ching-Huang , Chang Wei-Lun , Lee Jiunn-Tay , Sung Sheng-Feng , Yeh Po-Yen , Lai Ta-Chang , Tsai I-Ju , Lin Mei-Chen , Lin Cheng-Li , Wen Chi-Pang , Hsu Chung Y. ,   for the Taiwan Stroke Registry Investigators
Published: March 2020

Background and Purpose—
The observation that smokers with stroke could have better outcome than nonsmokers led to the term “smoking paradox.” The controversy of such a complex claim has not been fully settled, even though different case mix was noted. Analyses were conducted on 2 independent data sets to evaluate and determine whether such a paradox truly exists.

Methods—
Taiwan Stroke Registry with 88 925 stroke cases, and MJ cohort with 541 047 adults participating in a medical screening program with 1630 stroke deaths developed during 15 years of follow-up (1994–2008). Primary outcome for stroke registry was functional independence at 3 months by modified Rankin Scale score ≤2, for individuals classified by National Institutes of Health Stroke Scale score at admission. For MJ cohort, mortality risk by smoking status or by stroke history was assessed by hazard ratio.

Results—
A >11-year age difference in stroke incidence was found between smokers and nonsmokers, with a median age of 60.2 years for current smokers and 71.6 years for nonsmokers. For smokers, favorable outcome in mortality and in functional assessment in 3 months with modified Rankin Scale score ≤2 stratified by the National Institutes of Health Stroke Scale score was present but disappeared when age and sex were matched. Smokers without stroke history had a ≈2-fold increase in stroke deaths (2.05 for ischemic stroke and 1.53 for hemorrhagic stroke) but smokers with stroke history, 7.83-fold increase, overshadowing smoking risk. Quitting smoking at earlier age reversed or improved outcome.

Conclusions—
“The more you smoke, the earlier you stroke, and the longer sufferings you have to cope.” Smokers had 2-fold mortality from stroke but endured stroke disability 11 years longer. Quitting early reduced or reversed the harms.