bluuebunny/crossref_metadata_2025_split huggingface dataset:
CCT Supplementary comparison S2 on thermal conductivity measurements of insulating materials by guarded hot plate
Authors: Hay Bruno , Zarr Robert , Stacey Clark , Sokolov Nikolay , Cortés Leonel Lira , Zhang Jintao , Hammerschmidt Ulf , Filtz Jean-Remy , Allard Alexandre 
Published: February 2020

Seven National Metrology Institutes (NMIs) from France, United States, United Kingdom, Russia, Mexico, China and Germany participated in an inter-laboratory comparison on thermal conductivity measurements by the Guarded Hot Plate method. This action was part of a series of supplementary inter-laboratory comparisons (including infrared spectral emittance and thermal diffusivity) sponsored by the Consultative Committee on Thermometry (CCT) Task Group on Thermophysical Quantities (TG-ThQ). The objective of this collaborative work was to strengthen the consistency of thermal conductivity measurements carried out worldwide on low conductive materials. Measurements were conducted successively by all participants on the same sets of specimens of insulating materials (mineral wool and expanded polystyrene) at temperatures ranging from 10 °C to 40 °C, according to the International Standard ISO 8302. This protocol aimed to minimize issues of material variability by circulating the same pairs of specimens among the laboratories following the strict format of a round-robin test program. More than 120 data points (combinations of material, thickness and temperature) were compared. Ninety-two percent (92 %) of the data points were in agreement, with differences to weighted mean values less than the expanded uncertainties calculated from the individual NMI uncertainties and uncertainties related to the comparison process.

Main text

To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.
The final report has been peer-reviewed and approved for publication by the CCT, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
Ultra-fast prompt gamma detection in single proton counting regime for range monitoring in particle therapy
Authors: Marcatili S , Collot J , Curtoni S , Dauvergne D , Hostachy J-Y , Koumeir C , Létang J M , Livingstone J , Métivier V , Gallin-Martel L , Gallin-Martel M L , Muraz J F , Servagent N , Testa É , Yamouni M 
Published: February 2020

Abstract
In order to fully exploit the ballistic potential of particle therapy, we propose an online range monitoring concept based on time-of-flight (TOF)-resolved prompt gamma (PG) detection in a single proton counting regime. In a proof of principle experiment, different types of monolithic scintillating gamma detectors are read in time coincidence with a diamond-based beam hodoscope, in order to build TOF spectra of PG generated in a target presenting an air cavity of variable thickness. Since the measurement was carried out at low beam currents (< 1 proton/bunch) it was possible to reach excellent coincidence time resolutions, of the order of 100 ps (σ). Our goal is to detect possible deviations of the proton range with respect to treatment planning within a few intense irradiation spots at the beginning of the session and then carry on the treatment at standard beam currents. The measurements were limited to 10 mm proton range shift. A Monte Carlo simulation study reproducing the experiment has shown that a 3 mm shift can be detected at 2σ by a single detector of ∼1.4 × 10−3 absolute detection efficiency within a single irradiation spot (∼108 protons) and an optimised experimental set-up.
The physics of the mean and oscillating radial electric field in the L–H transition: the driving nature and turbulent transport suppression mechanism
Authors: Kobayashi T. 
Published: February 2020

Abstract
The low-to-high confinement mode transition (L–H transition) is one of the key elements in achieving a self-sustained burning fusion reaction. Although there is no doubt that the mean and/or oscillating radial electric field plays a role in triggering and sustaining the edge transport barrier, the detailed underlying physics are yet to be unveiled. In this special topic paper, the remarkable progress achieved in recent years is reviewed for two different aspects: (i) the radial electric field driving procedure and (ii) the turbulent transport suppression mechanism. Experimental observations in different devices show possible conflicting natures for these phenomena, which cannot be resolved solely by conventional paradigms. New insights obtained by combining different model concepts successfully reconcile these conflicts.
Predicting spatial and temporal variability in crop yields: an inter-comparison of machine learning, regression and process-based models
Authors: Leng Guoyong , Hall Jim W 
Published: February 2020

Abstract
Pervious assessments of crop yield response to climate change are mainly aided with either process-based models or statistical models, with a focus on predicting the changes in average yields, whilst there is growing interest in yield variability and extremes. In this study, we simulate US maize yield using process-based models, traditional regression model and a machine-learning algorithm, and importantly, identify the weakness and strength of each method in simulating the average, variability and extremes of maize yield across the country. We show that both regression and machine learning models can well reproduce the observed pattern of yield averages, while large bias is found for process-based crop models even fed with harmonized parameters. As for the probability distribution of yields, machine learning shows the best skill, followed by regression model and process-based models. For the country as a whole, machine learning can explain 93% of observed yield variability, followed by regression model (51%) and process-based models (42%). Based on the improved capability of the machine learning algorithm, we estimate that US maize yield is projected to decrease by 13.5% under the 2 °C global warming scenario (by ∼2050 s). Yields less than or equal to the 10th percentile in the yield distribution for the baseline period are predicted to occur in 19% and 25% of years in 1.5 °C (by ∼2040 s) and 2 °C global warming scenarios, with potentially significant implications for food supply, prices and trade. The machine learning and regression methods are computationally much more efficient than process-based models, making it feasible to do probabilistic risk analysis of climate impacts on crop production for a wide range of future scenarios.
Modeling of deep indentation in brittle materials
Authors: Olivi-Tran Nathalie , Despetis Florence , Faivre Annelise 
Published: February 2020

Abstract
We modelled deep indentation in brittle materials via a tensorial approach in three dimensions. Experimentally, we performed deep indentation in base catalyzed aerogels. When deep indentation is performed in these materials, it appears a Hertzian cone crack for both experimental and numerical results. The cone angle (angle between the surface and the boundaries of the Hertzian cone) depends on the material in which indentation is performed. The Young moduli of the materials has no effect on these angles. The tendency is that materials with increasing Poisson ratios have a decreasing value of the Hertzian cone angle.
Exploring the structural properties and enhancement of Opto-electrical investigations for the synthesized epoxy based polymers with local nanoscale structures
Authors: Jilani Wissal , Fourati Najla , Zerrouki Chouki , Faugeras Pierre-Antoine , Guinault Alain , Zerrouki Rachida , Guermazi Hajer 
Published: February 2020

Abstract
Epoxy networks of the diglycidyl ether of bisphenol A (DGEBA) were prepared using 4, 4′-diaminodiphenyl (44′DDS) and 3, 3′-diaminodiphenyl (33′DDS) sulfone diamines crosslinking hardeners. The structural, linear optical and mechanical properties of the investigated sample were analysed. Dynamic Mechanical Thermal Analysis and wide-angle x-ray diffraction were conducted to select a candidate presenting interesting thermo-mechanical properties and particular nanostructures embedded in an amorphous matrix. Our choice is therefore focused on DGEBA/33′DDS polymer for which, rocking curve measurements revealed the existence of two principal reflecting planes inclined to each other by about 0.27°. To highlight the potential effect of these interfaces, Thermally Stimulated Depolarization Current (TSDC) and Time Domain Spectroscopy measurements have been carried out. The application of the windowing polarization TSDC technique, in DGEBA/33′DDS polymer sample, gives an almost linear variation of the activation energies in the range between 3.65 and 4.09 eV. To our knowledge, this is the first study concerning epoxy polymers in which activation energies associated to ρ interfacial charge relaxations are calculated. To study the effect of the interfaces and trapped charge carriers, correlated by the angle x-ray diffraction measurements, the optical parameters were investigated. Our contribution will open a new avenue for developing the DGEBA/33′DDS polymer sustainable candidate in optoelectronic engineering applications.
Thermodynamic stability of borophene, B2O3 and other B1−xOx sheets
Authors: Arnold Florian M , Seifert Gotthard , Kunstmann Jens 
Published: February 2020

Abstract
The recent discovery of borophene, a two-dimensional allotrope of boron, raises many questions about its structure and its chemical and physical properties. Boron has a high chemical affinity to oxygen but little is known about the oxidation behaviour of borophene. Here we use first principles calculations to study the phase diagram of free-standing, two-dimensional B1−x
O
x
for compositions ranging from x = 0 to x = 0.6, which correspond to borophene and

B

2

O

3

sheets, respectively. Our results indicate that no stable compounds except borophene and

B

2

O

3

sheets exist. Intermediate compositions are heterogeneous mixtures of borophene and

B

2

O

3

. Other hypothetical crystals such as

B

2

O

are unfavorable and some of them underwent spontaneous disproportionation into borophene and

B

2

O

3

. It is also shown that oxidizing borophene inside the flakes is thermodynamically unfavorable over forming

B

2

O

3

at the edges. All findings can be rationalized by oxygen’s preference of two-fold coordination which is incompatible with higher in-plane coordination numbers preferred by boron. These results agree well with recent experiments and pave the way to better understand the process of oxidation of borophene and other two-dimensional materials.
Non-freezing cold event stresses can cause significant damage to mangrove seedlings: assessing the role of warming and nitrogen enrichment in a mesocosm study
Authors: Song Weimin , Feng Jianxiang , Krauss Ken W , Zhao Yan , Wang Zhonglei , Lin Guanghui 
Published: February 2020

Abstract
Mangroves are expanding poleward along coastlines globally as a response to rising temperatures and reduced incidence of freezing under climate change. Yet, knowledge of mangrove responses to infrequent cold events in the context of climate warming and regional nitrogen (N)-enriched eutrophication is limited. We conducted a mesocosm experiment in which the seedlings of two mangrove species (A. marina and B. gymnorrhiza) were grown either at ambient temperature or under warming with and without nitrogen (N) loading. During a short winter period, an unusually severe cold event occurred with the lowest temperature of 2 °C in the experimental region. We took this unique opportunity to assess possible response of these mangrove species to the cold stress under various environmental conditions. The cold event caused various degrees of damage to the seedlings of both mangrove species, with the warming treatment seemingly protecting leaves and branches from the cold damage. However, the warming treatment did not buffer mangroves to mortality from the low temperature stress in either species. The cold event resulted in significant decreases in seedling growth rates and net ecosystem CO2 uptake in the post-cold period relative to the pre-cold period, although the cold event did not alter the effects of warming treatment on these parameters of both mangrove species. The cold event differentially altered physiological responses of the two species growing under N loading, with the seedlings of A. marina growing in higher N concentrations having a reduced growth response after the cold event, whereas those of B. gymnorrhiza showed no change in post-cold period versus pre-cold period growth. Our results suggest that cold events may play a pivotal role in regulating mangrove survival and growth even under future warming scenarios. Two mangrove species exhibited differential survival and growth responses to the cold event at different N concentrations, which may have implications for how we can restore and conserve mangroves among the world’s eutrophied sub-tropical estuaries and with future warming.
Contemporary reconstruction after complex facial trauma
Authors: Zeiderman Matthew R , Pu Lee L Q 
Published: February 2020

AbstractComplex facial trauma requires complex repair and solutions. This process is challenging for the surgeon who seeks to manage the expectations of the patient and family while achieving the best possible result. Historically, the use of pedicled flaps, and then free tissue transfer, were the primary techniques utilized. Advancements in soft-tissue reconstruction, such as perforator flaps and pre-expanded and prefabricated flaps, allow refinement of the soft-tissue reconstruction process to create the best initial soft-tissue coverage. The advent of contemporary technologies, such as virtual surgical planning, stereolithography and customized implants and plates, facilitates a tailored approach to the patient’s reconstructive needs for precise bony reconstruction. When surgical and technological techniques are combined in complementary multistage reconstructions, better reconstructive and aesthetic outcomes are achievable than ever before. In this review, the authors present a summary of the management of complex facial trauma based on the senior author’s broad experience. Initial management and contemporary reconstructive techniques and technology to provide optimal outcomes are reviewed. A case series of complex facial traumas and their reconstructive process is also presented to demonstrate how complementary staged procedures can yield an optimal result. We believe the reconstructive surgeon managing complex facial trauma should strive to incorporate contemporary technologies and techniques into their armamentarium to provide the best patient care.
Evolution of renal function in patients with severe intestinal failure on home parenteral nutrition
Authors: Chalencon Elodie , Koppe Laetitia , Lauverjat Madeleine , Barnoud Didier , Fouque Denis , Chambrier Cécile 
Published: February 2020

Abstract

Background
Kidney disease is a frequent but underestimated complication in patients suffering from intestinal failure (IF) treated by long-term home parenteral nutrition (HPN). The evolution in glomerular filtration rate (GFR) over time is poorly characterized. The current equations for estimating GFR have limited precision. No study has specifically investigated the reliability of recent creatinine-based estimated GFR (eGFR) equations in this population. The aim of this study was to evaluate the renal function decline under home parenteral nutrition (HPN) with a gold standard method and compare the performances of routinely used eGFR equations.

Methods
Forty patients with HPN and two or more GFR measurements were retrospectively studied. The renal function decline was calculated by the slope drawn between the successive measured GFRs (mGFRs). The performances of the Modification of Diet in Renal Disease, Chronic Kidney Disease Epidemiology Collaboration, full age spectrum and revised Lund–Malmö equations were compared with reference methods (inulin or iohexol clearance).

Results
The mean mGFR was 78 ± 28 mL/min/1.73 m2. The annual decline of mGFR was −1.9 mL/min/1.73 m2/year. No predisposing factor was identified to predict impairment in renal function. eGFR formulas grossly overestimated mGFR and had a low level of accuracy.

Conclusions
Patients with IF are at significant risk for impaired renal function. In this population, the tested eGFR equations were inaccurate. However, monitoring kidney function with mGFR remains important in these patients, as their GFR regularly declines and no specific risk factor has yet been identified.
Data presentation in security operations centres: exploring the potential for sonification to enhance existing practice
Authors: Axon Louise , AlAhmadi Bushra A , Nurse Jason R C , Goldsmith Michael , Creese Sadie 
Published: February 2020

AbstractSecurity practitioners working in Security Operations Centres (SOCs) are responsible for detecting and mitigating malicious computer network activity. This work requires both automated tools that detect and prevent attacks, and data presentation tools that can present pertinent network security monitoring information to practitioners in an efficient and comprehensible manner. In recent years, advances have been made in the development of visual approaches to data presentation, with some uptake of advanced security visualization tools in SOCs. Sonification in which data are represented as sound, is said to have potential as an approach that could work alongside existing visual data presentation approaches to address some of the unique challenges faced by SOCs. For example, sonification has been shown to enable peripheral monitoring of processes, which could aid practitioners multitasking in busy SOCs. The perspectives of security practitioners on incorporating sonification into their actual working environments have not yet been examined, however. The aim of this article, therefore, is to address this gap by exploring attitudes to using sonification in SOCs and by identifying the data presentation approaches currently used. We report on the results of a study consisting of an online survey (N = 20) and interviews (N = 21) with security practitioners working in a range of different SOCs. Our contributions are (i) a refined appreciation of the contexts in which sonification could aid in SOC working practice, (ii) an understanding of the areas in which sonification may not be beneficial or may even be problematic, (iii) an analysis of the critical requirements for the design of sonification systems and their integration into the SOC setting and (iv) evidence of the visual data presentation techniques currently used and identification of how sonification might work alongside and address challenges to using them. Our findings clarify insights into the potential benefits and challenges of introducing sonification to support work in this vital security monitoring environment. Participants saw potential value in using sonification systems to aid in anomaly detection tasks in SOCs (such as retrospective hunting), as well as in situations in which peripheral monitoring is desirable: while multitasking with multiple work tasks, or while outside of the SOC.
Marginalized Memories and Multi-Layered Narratives of the Great War in Kamila Shamsie’s A God In Every Stone (2014)
Authors: Windsor Tara Talwar 
Published: February 2020

Abstract
Taking Kamila Shamsie’s 2014 war novel A God in Every Stone as its core case study, this article examines the development of increasingly complex, heterogeneous and inclusive understandings and memories of the Great War in the twenty-first century. It demonstrates how the novel’s complex and intricate narrative, as well as its paratextual framing and much of its reception, offer a timely engagement with a range of hitherto hidden or marginalized histories, particularly in relation to the role of women and experiences of South Asian soldiers, as well as with colonial violence and anti-colonial resistance in the war’s aftermath. At the same time, the novel underscores the ambivalences contained in those stories. Through this analysis, the article considers the extent to which A God in Every Stone can be seen as a ‘more expansive form of commemoration [...] with the scope for multiple narratives’.1 The novel is also ‘historically and ethically responsible’, not least in its critical reflection on the purposes, practices and power structures behind longer-standing historical narratives and cultural memories of the war itself and the (imperial) past in a post-colonial global context.
Implementation of a Transitional Care Model for Stroke: Perspectives From Frontline Clinicians, Administrators, and COMPASS-TC Implementation Staff
Authors: Lutz Barbara J , Reimold Alexandria E , Coleman Sylvia W , Guzik Amy K , Russell Laurie P , Radman Meghan D , Johnson Anna M , Duncan Pamela W , Bushnell Cheryl D , Rosamond Wayne D , Gesell Sabina B 
Published: February 2020

Abstract

Background and Objectives
Stroke is a chronic, complex condition that disproportionally affects older adults. Health systems are evaluating innovative transitional care (TC) models to improve outcomes in these patients. The Comprehensive Post-Acute Stroke Services (COMPASS) Study, a large cluster-randomized pragmatic trial, tested a TC model for patients with stroke or transient ischemic attack discharged home from the hospital. The implementation of COMPASS-TC in complex real-world settings was evaluated to identify successes and challenges with integration into the clinical workflow.

Research Design and Methods
We conducted a concurrent process evaluation of COMPASS-TC implementation during the first year of the trial. Qualitative data were collected from 4 sources across 19 intervention hospitals. We analyzed transcripts from 43 conference calls with hospital clinicians, individual and group interviews with leaders and clinicians from 9 hospitals, and 2 interviews with the COMPASS-TC Director of Implementation using iterative thematic analysis. Themes were compared to the domains of the RE-AIM framework.

Results
Organizational, individual, and community factors related to Reach, Adoption, and Implementation were identified. Organizational readiness was an additional key factor to successful implementation, in that hospitals that were not “organizationally ready” had more difficulty addressing implementation challenges.

Discussion and Implications
Multifaceted TC models are challenging to implement. Facilitators of implementation were organizational commitment and capacity, prioritizing implementation of innovative delivery models to provide comprehensive care, being able to address challenges quickly, implementing systems for tracking patients throughout the intervention, providing clinicians with autonomy and support to address challenges, and adequately resourcing the intervention.

Clinical Trial Registration
NCT02588664
Resurrecting positive action
Authors: McCrudden Christopher 
Published: February 2020

Abstract
The idea of “positive action” has long been regarded as a key element in a gender equality strategy and has been extensively promoted by the European Union (EU) as such. This brief comment considers: (i) how far positive action has been adopted in the EU and the European Economic Area (EEA); (ii) the reasons why the practice of positive action has fallen short of the ambitions that the EU has had for it; and (iii) how it might best be resurrected. I emphasize in particular the need for a radically revised regulatory approach to be adopted, one more in keeping with the insights of regulatory theory in other contexts.