bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structure‐preserving space‐time discretization of a mixed formulation for quasi‐incompressible large strain elasticity in principal stretches
Authors: Janz Alexander , Betsch Peter , Franke Marlon 
Published: August 2019

SummaryIn this paper, we propose an energy and momentum consistent time‐stepping scheme for nonlinear elastodynamics. The algorithm is based on a mixed Hu‐Washizu–type variational principle that is inspired by the concept of polyconvexity and relies on a tensor cross product of second‐order tensors. In addition, we introduce a new algorithmic stress formula in its eigenvalue representation to model the transient behavior of hyperelastic bodies of Ogden‐type materials. Finally, several numerical examples show the superior performance of the proposed formulation in terms of numerical robustness and stability.
Emergency medical technicians' experiences with unplanned births outside institutions: A qualitative interview study
Authors: Vagle Hanne , Haukeland Gunn Terese , Dahl Bente , Aasheim Vigdis , Vik Eline Skirnisdottir 
Published: August 2019

AbstractAimTo explore emergency medical technicians' experiences with unplanned births outside institutions.DesignA qualitative interview study.MethodsIndividual semi‐structured interviews with 12 emergency medical technicians in Norway. Systematic text condensation was used to analyse the data material.ResultsAnalysis showed that there is a mismatch between society's expectations about emergency medical technicians and the reality they encounter in out‐of‐hospital maternity care, that emergency medical technicians experience a general lack of training in caring for labouring women and that poor communication with other health professions challenges patient safety. The participants expressed how they do their best in caring for both mother and child, in spite of a lack of education, training and competence in assisting labouring women.
Type 2 diabetes familial risk personalization process profiles: Implications for patient–provider communication
Authors: Daack‐Hirsch Sandra , Schumacher Amy C. , Shah Lisa , Campo Shelly 
Published: August 2019

AbstractPeople who have a single first‐degree relative with type 2 diabetes (T2D) are at increased risk for developing T2D over their lifetime. A positive family history of T2D is also associated with developing risk awareness and engaging in risk‐reducing behaviors among the unaffected relatives. Yet, little is known about how people with a positive family history for disease personalize and process their familial risk to form perceptions about their own risk. In this mixed method study, we explored risk personalization among a diverse group of people between the ages of 18 and 60, with a positive family history of T2D, who were themselves unaffected (n = 109). We collected interview and survey data with respect to the
familial risk perception personalization model. Using cluster analysis, qualitative and quantitative data were combined to inductively derive three distinct clusters representing three different familial risk perception personalization processes. These results can serve as a basis for tailored interventions aimed at reducing risk for T2D among people with increased risk due to familial history.
Application of safety triad in preparation for climate extremes affecting the process industries
Authors: Parker Trent , Shen Ruiqing , O'Connor Michael , Wang Qingsheng 
Published: August 2019

AbstractA number of incidents within the process industries have been attributed to climate extremes. The late Dr. Mannan proposed the concept of a “safety triad,” which represents the three layers of an effective safety system, with deficiencies in any of the layers leading to possible incidents. Using this safety triad, past incidents in the process industries resulting from climate extremes can be investigated. From these investigations, appropriate systems and strategies can be implemented to address deficiencies in any of the layers to reduce the likelihood of similar incidents occurring in the future. This article presents a case study involving the DuPont La Porte facility toxic chemical release to demonstrate the use of the safety triad to identify deficiencies of the layers that led to the incident and propose strategies to address them.
Immune responses against enterovirus A71 infection: Implications for vaccine success
Authors: Aw‐Yong Kam Leng , NikNadia Nik Mohd Nasir , Tan Chee Wah , Sam I‐Ching , Chan Yoke Fun 
Published: August 2019

SummaryEnterovirus A71 (EV‐A71) from the Picornaviridae family is an important emerging pathogen causing hand, foot, and mouth disease (HFMD) outbreaks worldwide. EV‐A71 also caused fatal neurological complications in young children especially in Asia. On the basis of seroepidemiological studies from many Asian countries, EV‐A71 infection is very common. Children of very young age are particularly vulnerable. Large‐scale epidemics that occur every 3 to 4 years are associated with accumulation of an immunologically naive younger population. Capsid proteins especially VP1 with the presence of major B‐ and T‐cell epitopes are the most antigenic proteins. The nonstructural proteins mainly contribute to T‐cell epitopes that induce cross‐reactive immune responses against other enteroviruses. Dominant epitopes and their neutralization magnitudes differ in mice, rabbits, and humans. Neutralizing antibody is sufficient for immune protection, but poorer cellular immunity may lead to severe neurological complications and deaths. Some chemokines/cytokines are consistently found in severely ill patients, for example, IL‐6, IL‐10, IL‐17A, MCP‐1, IL‐8, MIG, IP‐10, IFN‐γ, and G‐CSF. An increase in white cell counts is a risk factor for severe HFMD. Recent clinical trials on EV‐A71 inactivated vaccine showed >90% efficacy and a robust neutralization response that was protective, indicating neutralizing antibody correlates for protection. No protection against other enteroviruses was observed. A comprehensive understanding of the immune responses to EV‐A71 infection will benefit the development of diagnostic tools, potential therapeutics, and subunit vaccine candidates. Future development of a multivalent enterovirus vaccine will require knowledge of correlates of protection, understanding of cross‐protection and memory T‐cell responses among enteroviruses.
Biological Metabolism Synthesis of Metal Oxides Nanorods from Bacteria as a Biofactory toward High‐Performance Lithium‐Ion Battery Anodes
Authors: Xiao Han , Xu Lusheng , Xiao Zhen , Huang Hui , Gan Yongping , Pan Guoxiang , Tao Xinyong , Xia Yang , Xia Xinhui , Zhang Wenkui 
Published: August 2019

AbstractIncreasing awareness toward environmental remediation and renewable energy has led to a vigorous demand for exploring a win‐win strategy to realize the eco‐efficient conversion of pollutants (“trash”) into energy‐storage nanomaterials (“treasure”). Inspired by the biological metabolism of bacteria, Acidithiobacillus ferrooxidans (A. ferrooxidans) is successfully exploited as a promising eco‐friendly sustainable biofactory for the controllable fabrication of α‐Fe2O3 nanorods via the oxidation of soluble ferrous irons to insoluble ferric substances (Jarosite, KFe3(SO4)2(OH)6) and a facile subsequent heat treatment. It is demonstrated that the stable solid electrolyte interphase layers and marvelous cracks in situ formed in biometabolic α‐Fe2O3 nanorods play important roles that not only significantly enhance the structure stability but also facilitate electron and ion transfer. Consequently, these biometabolic α‐Fe2O3 nanorods deliver a superior stable capacity of 673.9 mAh g−1 at 100 mA g−1 over 200 cycles and a remarkable multi‐rate capability that observably prevails over the commercial counterpart. It is highly expected that such biological synthesis strategies can shed new light on an emerging field of research interconnecting biotechnology, energy technology, environmental technology, and nanotechnology.
Reparative macrophage transplantation for myocardial repair: a refinement of bone marrow mononuclear cell-based therapy
Authors: Podaru Mihai-Nicolae , Fields Laura , Kainuma Satoshi , Ichihara Yuki , Hussain Mohsin , Ito Tomoya , Kobayashi Kazuya , Mathur Anthony , D’Acquisto Fulvio , Lewis-McDougall Fiona , Suzuki Ken 
Published: August 2019

AbstractReparative macrophages play an important role in cardiac repair post-myocardial infarction (MI). Bone marrow mononuclear cells (BM-MNCs) have been investigated as a donor for cell therapy but with limited clinical success. These cells, however, may be utilized as a source for reparative macrophages. This translational study aimed to establish a robust in vitro protocol to produce functional reparative macrophages from BM-MNCs and to establish pre-clinical evidence of the efficacy of reparative macrophage transplantation for the treatment of MI. Mouse BM-MNCs were treated with M-CSF plus IL-4, IL-10, TGF-β1 or combinations of these in vitro. The concomitant administration of M-CSF and IL-4 produced the highest rate and largest number of CD11b+F4/80+CD206+ reparative macrophages. Expression and secretion of tissue repair-related factors including IGF-1, TGF-β1, VEGF and IL1-ra were remarkably enhanced in reparative macrophages compared to BM-MNCs. These cells were transplanted in a mouse MI model, resulting in evident improvement in cardiac function recovery, compared to BM-MNC transplantation. Histological studies showed that reparative macrophage transplantation enhanced myocardial tissue repair including augmented microvascular formation, reduced cardiomyocyte hypertrophy and attenuated interstitial fibrosis. Moreover, survival of reparative macrophages in the heart post-transplantation was increased compared to BM-MNCs. Reparative macrophage transplantation also increased host-derived reparative macrophages in part through TGF-β secretion. In conclusion, concomitant M-CSF + IL-4 treatment effectively produced reparative macrophages from BM-MNCs in vitro. Transplantation of produced reparative macrophage achieved a superior therapeutic efficacy, compared to BM-MNC transplantation, through the enhanced quantity and quality of donor cell engraftment. Further development of this advanced cell-based therapy is warranted.
Psychological Distress, Terrorist Involvement and Disengagement from Terrorism: A Sequence Analysis Approach
Authors: Corner Emily , Gill Paul 
Published: August 2019

Abstract

Objectives
This paper utilizes probability-based modelling to unpack the complex and multifaceted individual, sociological, and psychological processes present within terrorist groups which may affect an individual’s psychological wellbeing. We outline the predictors of the onset of psychological distress across three phases of terrorist involvement (engagement, disengagement, and post-disengagement).

Methods
Utilizing a dataset of over 90 terrorist autobiographies, we conduct sequence analyses to pinpoint the onset of psychological problems and the experiences that preceded and proceeded this onset.

Results
The results demonstrate the complexity in the relationship between mental disorders and terrorist engagement and the heterogeneity of the lived experience of ‘being’ a terrorist. The experience of psychological distress is mediated by numerous factors and the combination of these factors.

Conclusions
The results helped highlight the complexity of ‘being’ a terrorist; multiple factors at individual, social, and group levels impact on an individual as they pass through life. Individuals engaged within terrorism encounter a number of risk factors, which if an individual has lower baseline levels of individual resilience and is not fully committed to the group identity, may impact them psychologically. The results highlighted that it is not the presence of risk factors which impact on an individual, but how they perceive these risk factors.
Joint attention to mental content and the social origin of reasoning
Authors: O’Madagain Cathal , Tomasello Michael 
Published: August 2019

AbstractGrowing evidence indicates that our higher rational capacities depend on social interaction—that only through engaging with others do we acquire the ability to evaluate beliefs as true or false, or to reflect on and evaluate the reasons that support our beliefs. Up to now, however, we have had little understanding of how this works. Here we argue that a uniquely human socio-linguistic phenomenon which we call ‘joint attention to mental content’ (JAM) plays a key role. JAM is the ability to focus together in conversation on the content of our mental states, such as beliefs and reasons. In such conversations it can be made clear that our attitudes to beliefs or reasons may conflict—that what I think is true, you might think is false, or that what I think is a good reason for believing something, you might think is a bad reason. We argue that through JAM, children discover that mental contents can be evaluated under various attitudes, and that this discovery transforms their mind-reading and reasoning abilities.
An improved Lagrangian model for the time evolution of nonlinear surface waves
Authors: Guérin Charles-Antoine , Desmars Nicolas , Grilli Stéphan T. , Ducrozet Guillaume , Perignon Yves , Ferrant Pierre 
Published: August 2019

Accurate real-time simulations and forecasting of phase-revolved ocean surface waves require nonlinear effects, both geometrical and kinematic, to be accurately represented. For this purpose, wave models based on a Lagrangian steepness expansion have proved particularly efficient, as compared to those based on Eulerian expansions, as they feature higher-order nonlinearities at a reduced numerical cost. However, while they can accurately model the instantaneous nonlinear wave shape, Lagrangian models developed to date cannot accurately predict the time evolution of even simple periodic waves. Here, we propose a novel and simple method to perform a Lagrangian expansion of surface waves to second order in wave steepness, based on the dynamical system relating particle locations and the Eulerian velocity field. We show that a simple redefinition of reference particles allows us to correct the time evolution of surface waves, through a modified nonlinear dispersion relationship. The resulting expressions of free surface particle locations can then be made numerically efficient by only retaining the most significant contributions to second-order terms, i.e. Stokes drift and mean vertical level. This results in a hybrid model, referred to as the ‘improved choppy wave model’ (ICWM) (with respect to Nouguier et al.’s J. Geophys. Res., vol. 114, 2009, p. C09012), whose performance is numerically assessed for long-crested waves, both periodic and irregular. To do so, ICWM results are compared to those of models based on a high-order spectral method and classical second-order Lagrangian expansions. For irregular waves, two generic types of narrow- and broad-banded wave spectra are considered, for which ICWM is shown to significantly improve wave forecast accuracy as compared to other Lagrangian models; hence, ICWM is well suited to providing accurate and efficient short-term ocean wave forecast (e.g. over a few peak periods). This aspect will be the object of future work.
Laboratory studies of Lagrangian transport by breaking surface waves
Authors: Lenain Luc , Pizzo Nick , Melville W. Kendall 
Published: August 2019

While it has long been recognized that Lagrangian drift at the ocean surface plays a critical role in the kinematics and dynamics of upper ocean processes, only recently has the contribution of wave breaking to this drift begun to be investigated through direct numerical simulations (Deike et al., J. Fluid Mech., vol. 829, 2017, pp. 364–391; Pizzo et al., J. Phys. Oceanogr., vol. 49(4), 2019, pp. 983–992). In this work, laboratory measurements of the surface Lagrangian transport due to focusing deep-water non-breaking and breaking waves are presented. It is found that wave breaking greatly enhances mass transport, compared to non-breaking focusing wave packets. These results are in agreement with the direct numerical simulations of Deike et al. (J. Fluid Mech., vol. 829, 2017, pp. 364–391), and the increased transport due to breaking agrees with their scaling argument. In particular, the transport at the surface scales with $S$, the linear prediction of the maximum slope at focusing, while the surface transport due to non-breaking waves scales with $S^{2}$, in agreement with the classical Stokes prediction.
Effects of nozzle-exit boundary-layer profile on the initial shear-layer instability, flow field and noise of subsonic jets
Authors: Bogey Christophe , Sabatini Roberto 
Published: August 2019

The influence of the nozzle-exit boundary-layer profile on high-subsonic jets is investigated by performing compressible large-eddy simulations (LES) for three isothermal jets at a Mach number of 0.9 and a diameter-based Reynolds number of $5\times 10^{4}$, and by conducting linear stability analyses from the mean-flow fields. At the exit section of a pipe nozzle, the jets exhibit boundary layers of momentum thickness of approximately 2.8 % of the nozzle radius and a peak value of turbulence intensity of 6 %. The boundary-layer shape factors, however, vary and are equal to 2.29, 1.96 and 1.71. The LES flow and sound fields differ significantly between the first jet with a laminar mean exit velocity profile and the two others with transitional profiles. They are close to each other in these two cases, suggesting that similar results would also be obtained for a jet with a turbulent profile. For the two jets with non-laminar profiles, the instability waves in the near-nozzle region emerge at higher frequencies, the mixing layers spread more slowly and contain weaker low-frequency velocity fluctuations and the noise levels in the acoustic field are lower by 2–3 dB compared to the laminar case. These trends can be explained by the linear stability analyses. For the laminar boundary-layer profile, the initial shear-layer instability waves are most strongly amplified at a momentum-thickness-based Strouhal number $St_{\unicode[STIX]{x1D703}}=0.018$, which is very similar to the value obtained downstream in the mixing-layer velocity profiles. For the transitional profiles, on the contrary, they predominantly grow at higher Strouhal numbers, around $St_{\unicode[STIX]{x1D703}}=0.026$ and 0.032, respectively. As a consequence, the instability waves rapidly vanish during the boundary-layer/shear-layer transition in the latter cases, but continue to grow over a large distance from the nozzle in the former case, leading to persistent large-scale coherent structures in the mixing layers for the jet with a laminar exit velocity profile.
An improved model of near-inertial wave dynamics
Authors: Asselin Olivier , Young William R. 
Published: August 2019

The YBJ equation (Young & Ben Jelloul, J. Marine Res., vol. 55, 1997, pp. 735–766) provides a phase-averaged description of the propagation of near-inertial waves (NIWs) through a geostrophic flow. YBJ is obtained via an asymptotic expansion based on the limit $\mathit{Bu}\rightarrow 0$, where $\mathit{Bu}$ is the Burger number of the NIWs. Here we develop an improved version, the YBJ+ equation. In common with an earlier improvement proposed by Thomas, Smith & Bühler (J. Fluid Mech., vol. 817, 2017, pp. 406–438), YBJ+ has a dispersion relation that is second-order accurate in $\mathit{Bu}$. (YBJ is first-order accurate.) Thus both improvements have the same formal justification. But the dispersion relation of YBJ+ is a Padé approximant to the exact dispersion relation and with $\mathit{Bu}$ of order unity this is significantly more accurate than the power-series approximation of Thomas et al. (2017). Moreover, in the limit of high horizontal wavenumber $k\rightarrow \infty$, the wave frequency of YBJ+ asymptotes to twice the inertial frequency $2f$. This enables solution of YBJ+ with explicit time-stepping schemes using a time step determined by stable integration of oscillations with frequency $2f$. Other phase-averaged equations have dispersion relations with frequency increasing as $k^{2}$ (YBJ) or $k^{4}$ (Thomas et al. 2017): in these cases stable integration with an explicit scheme becomes impractical with increasing horizontal resolution. The YBJ+ equation is tested by comparing its numerical solutions with those of the Boussinesq and YBJ equations. In virtually all cases, YBJ+ is more accurate than YBJ. The error, however, does not go rapidly to zero as the Burger number characterizing the initial condition is reduced: advection and refraction by geostrophic eddies reduces in the initial length scale of NIWs so that $\mathit{Bu}$ increases with time. This increase, if unchecked, would destroy the approximation. We show, however, that dispersion limits the damage by confining most of the wave energy to low $\mathit{Bu}$. In other words, advection and refraction by geostrophic flows does not result in a strong transfer of initially near-inertial energy out of the near-inertial frequency band.
Acceptability of community quarantine in contexts of communicable disease epidemics: perspectives of literate lay people living in Conakry, Guinea
Authors: Kpanake Lonzozou , Leno Jean-Pierre , Sorum Paul Clay , Mullet Etienne 
Published: August 2019

Abstract
During the 2014–2016 Ebola epidemic in West Africa, some communities reacted hostilely to the implementation of quarantine measures. This study's aim was to examine the views of lay people in Guinea on the acceptability of community quarantine. From June to August 2016, 302 adults indicated the acceptability of quarantine in 36 scenarios varying as a function of four factors: the infectious disease's level of contagiousness, its level of lethality, the number of cases in the community and whether persons in quarantine are provided with support services. Five clusters were identified: (1) for 18% of the participants, quarantine is never acceptable; (2) 16% considered, in contrast, that quarantine is always acceptable; (3) for 14%, it depends on the disease's level of contagiousness and lethality; (4) 36% based their judgement not only on the levels of contagiousness and lethality, but also on whether those in quarantine are provided with support services; and (5) 16% had no opinion. Interventions to increase voluntary compliance with community quarantine in Guinea must not be ‘one size fits all’, but must be multifaceted and tailored in design and implementation to match the diversity of people's concerns and needs.
Winter spawning of Antarctic toothfish Dissostichus mawsoni in the Ross Sea region
Authors: Parker Steven J. , Stevens Darren W. , Ghigliotti Laura , La Mesa Mario , Di Blasi Davide , Vacchi Marino 
Published: August 2019

AbstractA survey of Antarctic toothfish (Dissostichus mawsoni) was conducted in the northern Ross Sea region during the winter of 2016 to document the timing and location of spawning activity, to collect biological information about reproductive status during the spawning season and to look for temporal signals in biological data from D. mawsoni that may indicate a spawning migration of mature toothfish from the continental slope region to the northern Ross Sea region. The 58 day survey showed that spawning of D. mawsoni began on some seamounts by early July. No changes were detected between winter and summer in length, age, sex ratio or condition factor distributions for D. mawsoni in the northern Ross Sea as hypothesized following a spawning migration from the slope to the northern Ross Sea region. These results suggest that the distribution of D. mawsoni in the Ross Sea is mainly accomplished through ontogenetic migration and not annual return spawning migrations.