bluuebunny/crossref_metadata_2025_split huggingface dataset:
Homotopy analysis of the Lippmann–Schwinger equation for seismic wavefield modelling in strongly scattering media
Authors: Jakobsen Morten , Huang Xingguo , Wu Ru-Shan 
Published: March 2020

SUMMARYWe present an application of the homotopy analysis method for solving the integral equations of the Lippmann–Schwinger type, which occurs frequently in acoustic and seismic scattering theory. In this method, a series solution is created which is guaranteed to converge independent of the scattering potential. This series solution differs from the conventional Born series because it contains two auxiliary parameters ϵ and h and an operator H that can be selected freely in order to control the convergence properties of the scattering series. The ϵ-parameter which controls the degree of dissipation in the reference medium (that makes the wavefield updates localized in space) is known from the so-called convergent Born series theory; but its use in conjunction with the homotopy analysis method represents a novel feature of this work. By using H = I (where I is the identity operator) and varying the convergence control parameters h and ϵ, we obtain a family of scattering series which reduces to the conventional Born series when h = −1 and ϵ = 0. By using H = γ where γ is a particular pre-conditioner and varying the convergence control parameters h and ϵ, we obtain another family of scattering series which reduces to the so-called convergent Born series when h = −1 and ϵ ≥ ϵc where ϵc is a critical dissipation parameter depending on the largest value of the scattering potential. This means that we have developed a kind of unified scattering series theory that includes the conventional and convergent Born series as special cases. By performing a series of 12 numerical experiments with a strongly scattering medium, we illustrate the effects of varying the (ϵ, h, H)-parameters on the convergence properties of the new homotopy scattering series. By using (ϵ, h, H) = (0.5, −0.8, I) we obtain a new scattering series that converges significantly faster than the convergent Born series. The use of a non-zero dissipation parameter ϵ seems to improve on the convergence properties of any scattering series, but one can now relax on the requirement ϵ ≥ ϵc from the convergent Born series theory, provided that a suitable value of the convergence control parameter h and operator H is used.
Conditions for shared decision making in the care of transgender youth in Canada
Authors: Clark Beth A , Virani Alice , Marshall Sheila K , Saewyc Elizabeth M 
Published: March 2020

Abstract
Information is lacking on the role shared decision making plays in the care of transgender (trans) youth. This qualitative, descriptive study explored how trans youth, parents and health care providers engaged or did not engage in shared decision-making practices around hormone therapy initiation and what conditions supported shared decision-making approaches in clinical practice. Semi-structured interviews were conducted with 47 participants in British Columbia, Canada, and analyzed using a constructivist grounded theory approach. While formal shared decision-making models were not used in practice, many participants described elements of such approaches when asked about their health care decision-making processes. Others described health care interactions that were not conducive to a shared decision-making approach. The key finding that emerged through this analysis was a set of five conditions for supporting shared decision making when making decisions surrounding initiation of hormone therapy with trans youth. Both supportive relationships and open communication were necessary among participants to support shared decision making. All parties needed to agree regarding what decisions were to be made and what role each person would play in the process. Finally, adequate time was needed for decision-making processes to unfold. When stakeholders meet these five conditions, a gender-affirming and culturally safer shared decision-making approach may be used to support decision making about gender-affirming care. Implications for clinical practice and future research are discussed.
Understanding policy change for obesity prevention: learning from sugar-sweetened beverages taxes in Mexico and Chile
Authors: Fuster Melissa , Burrowes Sahai , Cuadrado Cristóbal , Velasco Bernal Anabel , Lewis Sarah , McCarthy Ben , Shen Gordon C 
Published: March 2020

Abstract
This article examines the policy change process that resulted in the current sugar-sweetened beverages taxes in Mexico and Chile, using the Kaleidoscope Model for Policy Change, a framework developed for nutrition and food policy change analysis. We used a qualitative study design, including 24 key informant (KI) interviews (16 researchers, 5 civil society representatives and 3 food/beverage industry representatives), encompassing global and in-country perspectives. The analysis shows concurrence with the Kaleidoscope Model, highlighting commonalities in the policy change process. These included the importance of focusing events and coalitions for agenda-setting. Both top-down executive leadership and bottom-up pressure from civil society coalitions were important for the policy adoption as were flexible framing of the tax, and taking advantage of windows of opportunity. In both countries, the tax resulted from national, revenue-seeking fiscal reforms and in sub-optimal tax rates, as a result of the industry influence. KIs also discussed emerging evaluation results, highlighting differences in interpretation concerning the magnitude of change from the tax, and shared potential modifications to the current policies. This analysis contributes to a greater understanding of the policy change process focused on obesity prevention, using an innovative theoretical framework developed specifically for food and nutrition policy.
Accountability, denial and the future-proofing of British torture
Authors: Blakeley Ruth , Raphael Sam 
Published: March 2020

Abstract
When powerful liberal democratic states are found to be complicit in extreme violations of human rights, how do they respond and why do they respond as they do? Drawing on the example of the United Kingdom's complicity in torture since 9/11, this article demonstrates how reluctant the UK has been to permit a full reckoning with its torturous past. We demonstrate that successive UK governments engaged in various forms of denial, obfuscation and attempts to obstruct investigation and avoid accountability. The net effect of their responses has been to deny the victims redress, through adequate judicial processes, and to deny the public adequate state accountability. These responses are not simply aimed at shielding from prosecution the perpetrators and those who have oversight of them, nor preventing political embarrassment. The various forms of denial and obstruction are also designed to ensure that collusion can continue uninterrupted. A core concern of intelligence officials and ministers has been to prevent any process that would lead to a comprehensive prohibition on involvement in operations where torture and cruel, inhuman and degrading treatment are a real possibility. The door remains wide open, and deliberately so, for British involvement in torture.
Development of an Interdisciplinary Telehealth Model of Provider Training and Comprehensive Care for Hepatitis C and Opioid Use Disorder in a High-Burden Region
Authors: Sherbuk Jacqueline E , Knick Terry Kemp , Canan Chelsea , Ross Patrice , Helbert Bailey , Cantrell Eleanor Sue , Cantrell Charlene Joie , Stallings Rachel , Barron Nicole , Jordan Diana , McManus Kathleen A , Dillingham Rebecca 
Published: March 2020

AbstractBackgroundHepatitis C virus (HCV) and the opioid epidemic disproportionately affect the Appalachian region. Geographic and financial barriers prevent access to specialty care. Interventions are needed to address the HCV-opioid syndemic in this region.MethodsWe developed an innovative, collaborative telehealth model in Southwest Virginia featuring bidirectional referrals from and to comprehensive harm reduction (CHR) programs and office-based opioid therapy (OBOT), as well as workforce development through local provider training in HCV management. We aimed to (1) describe the implementation process of provider training and (2) assess the effectiveness of the telehealth model by monitoring patient outcomes in the first year.ResultsThe provider training model moved from a graduated autonomy model with direct specialist supervision to a 1-day workshop with parallel tracks for providers and support staff followed by monthly case conferences. Forty-four providers and support staff attended training. Eight providers have begun treating independently. For the telehealth component, 123 people were referred, with 62% referred from partner OBOT or CHR sites; 103 (84%) attended a visit, 93 (76%) completed the treatment course, and 61 (50%) have achieved sustained virologic response. Rates of sustained virologic response did not differ by receipt of treatment for opioid use disorder.ConclusionsProviders demonstrated a preference for an in-person training workshop, though further investigation is needed to determine why only a minority of those trained have begun treating HCV independently. The interdisciplinary nature of this program led to efficient treatment of hepatitis C in a real-world population with a majority of patients referred from OBOTs and CHR programs.
Long-Term Survival, Health, Social Functioning, and Education in Patients With an Enterovirus Central Nervous System Infection, Denmark, 1997–2016
Authors: Omland Lars H , Holm-Hansen Charlotte , Lebech Anne-Mette , Dessau Ram B , Bodilsen Jacob , Andersen Nanna S , Roed Casper , Christiansen Claus B , Ellermann-Eriksen Svend , Midgley Sofie , Nielsen Lene , Benfield Thomas , Hansen Ann-Brit E , Andersen Christian Ø , Rothman Kenneth J , Sørensen Henrik T , Fischer Thea K , Obel Niels 
Published: March 2020

Abstract

Background
The long-term clinical course of patients with an enterovirus central nervous system infection (ECI) is poorly understood.

Methods
We performed a nationwide population-based cohort study of all Danish patients with ECI diagnosed 1997–2016 (n = 1745) and a comparison cohort from the general population individually matched on date of birth and sex (n = 17 450). Outcomes were categorized into mortality and risk of cancer and likely measures of neurological sequelae: neuropsychiatric morbidities, educational landmarks, use of hospital services, employment, receipt of disability pension, income, number of sick leave days, and nursing home residency.

Results
Mortality in the first year was higher among patients with ECI (mortality rate ratio [MRR] = 10.0; 95% confidence interval [CI], 4.17–24.1), but thereafter mortality was not higher (MMR = 0.94; 95% CI, 0.47–1.86). Long-term outcomes for patients with ECI were not inferior to those of the comparison cohort for risk of cancer, epilepsy, mental and behavioral disorders, dementia, depression, school start, school marks, high school education, use of hospital services, employment, receipt of disability pension, income, days of sick leave, or nursing home residency.

Conclusions
Diagnosis of an ECI had no substantial impact on long-term survival, health, or social/educational functioning.
A Randomized Clinical Trial to Compare Plasmodium falciparum Gametocytemia and Infectivity After Blood-Stage or Mosquito Bite–Induced Controlled Malaria Infection
Authors: Alkema Manon , Reuling Isaie J , de Jong Gerdie M , Lanke Kjerstin , Coffeng Luc E , van Gemert Geert-Jan , van de Vegte-Bolmer Marga , de Mast Quirijn , van Crevel Reinout , Ivinson Karen , Ockenhouse Christian F , McCarthy James S , Sauerwein Robert , Collins Katharine A , Bousema Teun 
Published: March 2020

Abstract

Background
For malaria elimination efforts, it is important to better understand parasite transmission to mosquitoes and develop models for early-clinical evaluation of transmission-blocking interventions.

Methods
In a randomized open-label trial, 24 participants were infected by bites from Plasmodium falciparum 3D7-infected mosquitoes (mosquito bite [MB]; n = 12) or by induced blood-stage malaria (IBSM) with the same parasite line (n = 12). After subcurative piperaquine treatment, asexual parasite and gametocytes kinetics were assessed, and mosquito feeding experiments were performed.

Results
Study procedures were well tolerated. The median peak gametocyte density was 1304/mL (interquartile range, 308–1607/mL) after IBSM, compared with 14/mL (10–64/mL) after MB inoculation (P &lt; .001), despite similar peak asexual parasite densities (P = .48). Peak gametocyte density was correlated with preceding pfap2-g transcripts, indicative of gametocyte commitment (ρ = 0.62; P = .002). Direct feeding assays resulted in mosquito infections from 9 of 12 participants after IBSM versus 0 of 12 after MB inoculation (P &lt; .001).

Conclusions
We observed a striking effect of inoculation method on gametocyte production, suggesting higher gametocyte commitment after IBSM. Our direct comparison of MB and IBSM establishes the controlled human malaria infection transmission model, using intravenous administration of P. falciparum–infected erythrocytes as a model for early-clinical evaluation of interventions that aim to interrupt malaria transmission.

Clinical Trial Registration
NCT03454048
A Rule of Thumb for Hand Burns: Categorization and Mapping of Proportional Surface Area Involvement
Authors: Dargan Dallan , Adjei Bismark , Shokrollahi Kayvan 
Published: March 2020

Abstract
Hand burns are common and often complex injuries, requiring referral to specialist centers. The patient’s thumbprint is a rapid means of accurately assessing hand burn surface area. This study aimed to establish categories and evaluate sites of hand burn surface area in order to facilitate comparison of hand burns. Sixteen burns involving the hand and wrist among 14 patients referred to a burns center were retrospectively categorized by burn mechanism, burn thickness, and hand burn surface area. The burn surface area in the clinical record was compared with that calculated by the thumbprint method and the rule of thumb diagram. Burn surface area in the clinical record was either “1%” or “&lt;1%” in 9 of 16 cases. In contrast, the surface area was &lt;1 thumbprint (T) in six burns, two were between 1 and 5T, three were 5 to 10T, two were 10 to 20T, two were 20 to 50T, and one was greater than 50T. The median thumbprint burn surface area was 1.5T (range 0.20–80T), which corresponds to 0.05% TBSA. The hand areas with the highest burn frequency per unit area were the dorsum of the hand and dorsum of the index finger, with relative sparing of the palm and palmar surface of the digits. Hand burns surface area varies widely, and thumbprint evaluation with categories and mapping allows finer distinction between the surface area proportions and specific sites involved, even in a small series of hand burns.
Releasing Burn-Induced Compartment Syndrome by Enzymatic Escharotomy-Debridement: A Case Study
Authors: Mataro Ilaria , Lanza Anna , Di Franco Sveva , Di Franco Livia , Sangiuolo Mariella , Notaro Maria , d’Alessio Roberto , Villani Romolo 
Published: March 2020

Abstract
Burn-induced compartment syndrome represents a serious and acute condition in deep circumferential burns of the extremities which, if left untreated, can cause severe complications. The surgical escharotomy that releases the high subdermal pressure is the therapeutic treatment of choice for burn-induced compartment syndrome. Guidelines for escharotomy indications and timing include pressure greater than 30 mm Hg and 6 Ps (Pain, Pallor, Paresthesia, Paralysis, Pulseless, and Poikilothermia). Nevertheless, despite the need for an early as possible pressure release, escharotomy is often delayed when a capable surgeon is not available, or if the indication is not completely clear to justify potential risks associated with surgical escharotomy. Early treatment of circumferential burns of the extremities with a Bromelain-based enzymatic agent NexoBrid® may represent a less traumatic and invasive procedure to reduce intra-compartmental pressure, replacing surgical escharotomy. This case study of 23 patients describes the variation of compartmental pressure in patients with circumferential burns of the extremities treated with NexoBrid® enzymatic escharotomy-debridement. All the patients were treated with NexoBrid® within 2 to 22 hours post-injury in our Burn Intensive Care Center. The excessive pressure recorded before treatment returned to normal below 30 mm Hg and an approximately 60% reduction of the compartmental pressure was observed in most cases within 1 hour from NXB application. On NexoBrid® removal after 4 hours complete debridement-escharotomy of the burns was achieved. Enzymatic escharotomy-debridement appears to be a useful and safe method to reduce postburn compartmental pressure. Additional randomized, well-controlled powered studies are needed to further support these results.
Duped or duplicitous?
Authors: Catterson Lynn 
Published: March 2020

Abstract
Deriving from material in the state and city archives of Florence relating to the Florentine dealer Stefano Bardini as well as material in the Berlin Zentralarchiv, this paper presents a case-study that illustrates the ways in which Bardini & Co. wilfully contaminated the art-historical canon. The bas-relief of the so-called Madonna della Rosa, often attributed to Donatello, exists in at least five versions, but four have a provenance dating no earlier than the nineteenth or very early twentieth century. This composition was first published by Wilhelm von Bode in 1892 with an attribution to Donatello. Thereafter, the literature was amended to accommodate art-market tastes. Archival evidence indicates that Bardini & Co. used photographs and plaster casts to produce at least some of the versions. The various reliefs of the Madonna della Rosa are but one example of the dubious objects put into circulation by Bardini, and then written into the scholarly literature by Bode. These objects raise questions about their relationship and the real agency of Bode.
Near-infrared variability in dusty white dwarfs: tracing the accretion of planetary material
Authors: Rogers Laura K , Xu (许偲艺) Siyi , Bonsor Amy , Hodgkin Simon , Su Kate Y L , von Hippel Ted , Jura Michael 
Published: March 2020

ABSTRACT
The inwards scattering of planetesimals towards white dwarfs is expected to be a stochastic process with variability on human time-scales. The planetesimals tidally disrupt at the Roche radius, producing dusty debris detectable as excess infrared emission. When sufficiently close to the white dwarf, this debris sublimates and accretes on to the white dwarf and pollutes its atmosphere. Studying this infrared emission around polluted white dwarfs can reveal how this planetary material arrives in their atmospheres. We report a near-infrared monitoring campaign of 34 white dwarfs with infrared excesses with the aim to search for variability in the dust emission. Time series photometry of these white dwarfs from the United Kingdom Infrared Telescope (Wide Field Camera) in the J-, H-, and K-bands was obtained over baselines of up to 3 yr. We find no statistically significant variation in the dust emission in all three near-infrared bands. Specifically, we can rule out variability at ∼1.3 per cent for the 13 white dwarfs brighter than 16th mag in K-band, and at ∼10 per cent for the 32 white dwarfs brighter than 18th mag over time-scales of 3 yr. Although to date two white dwarfs, SDSS J095904.69−020047.6 and WD 1226+110, have shown K-band variability, in our sample we see no evidence of new K-band variability at these levels. One interpretation is that the tidal disruption events that lead to large variabilities are rare occur on short time-scales, and after a few years the white dwarfs return to being stable in the near-infrared.
Photometric and kinematic study of the three intermediate age open clusters NGC 381, NGC 2360, and Berkeley 68
Authors: Maurya Jayanand , Joshi Y C 
Published: March 2020

ABSTRACT
We present UBVRcIc photometric study of three intermediate age open star clusters NGC 381, NGC 2360, and Berkeley 68 (Be 68). We examine the cluster membership of stars using recently released Gaia DR2 proper motions and obtain a total of 116, 332, and 264 member stars in these three clusters. The mean reddening of E(B − V) = 0.36 ± 0.04, 0.08 ± 0.03, and 0.52 ± 0.04 mag is found in the direction of these clusters where we observe an anomalous reddening towards NGC 381. We fitted the solar metallicity isochrones to determine age and distance of the clusters which are found to be log(Age) = 8.65 ± 0.05, 8.95 ± 0.05, and 9.25 ± 0.05 yr with the respective distance of 957 ± 152, 982 ± 132, and 2554 ± 387 pc for the clusters NGC 381, NGC 2360, and Be 68. A two-stage power law in the mass function (MF) slope is observed in the cluster NGC 381, however, we observe only a single MF slope in the clusters NGC 2360 and Be68. To study a possible spatial variation in the slope of MF, we estimate slopes separately in the inner and the outer regions of these clusters and notice a steeper slope in outer region. The dynamic study of these clusters reveals deficiency of low-mass stars in their inner regions suggesting the mass segregation process in all these clusters. The relaxation times of 48.5, 78.9, and 87.6 Myr are obtained for the clusters NGC 381, NGC 2360, and Be 68, respectively, which are well below to their respective ages. This suggests that all the clusters are dynamically relaxed.
Failed prominence eruptions near 24 cycle maximum
Authors: Filippov B 
Published: March 2020

ABSTRACT
We analyse 16 failed filament eruptions observed near 24 solar cycle maximum from 2013 May to 2014 July. No significant rotation of filament spines is observed during the ascent in all studied failed eruptions, which does not support kink-instability mechanism of triggering the eruptions. We calculate potential magnetic field distributions in the corona above the initial locations of the filaments to study their height dependence. In seven events, the vertical profiles of the decay index n are monotonic. The other nine events occur in the regions with the switchback or saddle-like n-profiles. The direction of the horizontal field near the saddle bottom is turned through more than 100° relative its direction at the initial filament position, which reveals the quadrupolar magnetic configuration with null points in these regions. The eruptive filaments stop above the null points where the total Lorentz force is directed upward. The most reasonable force that can terminate filament ascending and balance the Lorentz force seems the gravity.