bluuebunny/crossref_metadata_2025_split huggingface dataset:
Broadband High‐Efficiency Chiral Splitters and Holograms from Dielectric Nanoarc Metasurfaces
Authors: Wang Dapeng , Hwang Yongsop , Dai Yanmeng , Si Guangyuan , Wei Shibiao , Choi Duk‐Yong , Gómez Daniel E. , Mitchell Arnan , Lin Jiao , Yuan Xiaocong 
Published: April 2019

AbstractSimultaneous broadband and high efficiency merits of designer metasurfaces are currently attracting widespread attention in the field of nanophotonics. However, contemporary metasurfaces rarely achieve both advantages simultaneously. For the category of transmissive metadevices, plasmonic or conventional dielectric metasurfaces are viable for either broadband operation with relatively low efficiency or high efficiency at only a selection of wavelengths. To overcome this limitation, dielectric nanoarcs are proposed as a means to accomplish two advantages. Continuous nanoarcs support different electromagnetic resonant modes at localized areas for generating phase retardation. Meanwhile, the geometric nature of nanoarc curvature endows the nanoarcs with full phase coverage of 0–2π due to the Pancharatnam–Berry phase principle. Experimentally incorporated with the chiral‐detour phase principle, a few compelling functionalities are demonstrated, such as chiral beamsplitting, broadband holography, and helicity‐selective holography. The continuous nanoarc metasurfaces prevail over plasmonic or dielectric discretized building block strategies and the findings lead to novel designs of spin‐controllable metadevices.
Predictive value of soluble urokinase-type plasminogen activator receptor for mortality in patients with suspected myocardial infarction
Authors: Sörensen Nils A. , Nikorowitsch Julius , Neumann Johannes T. , Rübsamen Nicole , Goßling Alina , Hartikainen Tau S. , Blankenberg Stefan , Westermann Dirk , Zeller Tanja , Karakas Mahir 
Published: April 2019

Abstract
Background
Early risk stratification of patients with suspected acute myocardial infarction (AMI) constitutes an unmet need in current daily clinical practice. We aimed to evaluate the predictive value of soluble urokinase-type plasminogen activator receptor (suPAR) levels for 1-year mortality in patients with suspected AMI.

Methods and results
suPAR levels were determined in 1314 patients presenting to the emergency department with suspected AMI. Patients were followed up for 12 months to assess all-cause mortality. Of 1314 patients included, 308 were diagnosed with AMI. Median suPAR levels did not differ between subjects with AMI compared to non-AMI (3.5 ng/ml vs. 3.2 ng/ml, p = 0.066). suPAR levels reliably predicted all-cause mortality after 1 year. Hazard ratio for 1-year mortality was 12.6 (p < 0.001) in the quartile with the highest suPAR levels compared to the first quartile. The prognostic value for 6-month mortality was comparable to an established risk prediction model, the Global Registry of Acute Coronary Events (GRACE) score, with an AUC of 0.79 (95% CI 0.72–0.86) for the GRACE score and 0.77 (95% CI 0.69–0.84) for suPAR. Addition of suPAR improved the GRACE score, as shown by integrated discrimination improvement statistics of 0.036 (p = 0.03) suggesting a further discrimination of events from non-events by the addition of suPAR.

Conclusions
suPAR levels reliably predicted mortality in patients with suspected AMI.

Study registration
http://www.clinicaltrials.gov (NCT02355457).
School absenteeism as a risk factor for self-harm and suicidal ideation in children and adolescents: a systematic review and meta-analysis
Authors: Epstein Sophie , Roberts Emmert , Sedgwick Rosemary , Polling Catherine , Finning Katie , Ford Tamsin , Dutta Rina , Downs Johnny 
Published: April 2019

AbstractSelf-harm and suicidal ideation in children and adolescents are common and are risk factors for completed suicide. Social exclusion, which can take many forms, increases the risk of self-harm and suicidal ideation. One important marker of social exclusion in young people is school absenteeism. Whether school absenteeism is associated with these adverse outcomes, and if so to what extent, remains unclear. To determine the association between school absenteeism and both self-harm (including completed suicide) and suicidal ideation in children and adolescents, we conducted a systematic review of observational studies. We conducted meta-analysis and report a narrative synthesis where this was not possible. Meta-analysis of cross-sectional studies showed that school absenteeism was associated with an increased risk of self-harm [pooled adjusted odds ratio (aOR) 1.37, 95% confidence interval 1.20–1.57,P = 0.01] and of suicidal ideation (pooled aOR 1.20, 95% CI 1.02–1.42,P = 0.03). A small number of studies showed that school absenteeism had a longitudinal association with both adverse outcomes. Heterogeneity in the exposure and outcome variables, study design and reporting was prominent and limited the extent to which it was appropriate to pool results. School absenteeism was associated with both self-harm and suicidal ideation in young people, but this evidence was derived from a small number of cross-sectional studies. Further research into the mechanisms of this association could help to inform self-harm and suicide prevention strategies at clinical, school and population levels.
Visualizing faculty development impact: A&nbsp;social network analysis
Authors: Foo Yang Yann , Moody James , Cook Sandy 
Published: April 2019

Faculty development programs have tended to focus on low levels of evaluation such as participant satisfaction rather than assess the actual changes that training has brought about in the workplace. This has prompted scholars to suggest using social network analysis as a means to provide a more rigorous method of evaluating the impact of faculty development. To test the feasibility of such a suggestion, we used the social network analysis concepts of social cohesion to assess the impact of a year-long fellowship program conducted by Duke-NUS Medical School’s Academic Medicine Education Institute (AM·EI). Specifically, we used the key metrics of connectedness and betweenness centrality to assess the changes in the AM·EI fellows’ information and collaboration networks post-fellowship. We invited three cohorts of AM·EI fellows (2013–2016; n = 74) to participate in a branched survey. The response rate was 64%; n = 47. Results showed that in terms of connectedness, the largest connected set more than doubled in size, and pair level reachability grew threefold. Betweenness centrality among the AM·EI fellows also increased, with more individuals reporting that they sought advice from the fellows as well as trusted the advice the fellows provided. In sum, this study suggests that it is indeed viable to use social network analysis to identify changes in social cohesion. As such, social network analysis serves as another tool for scholars to use to assess the impact of their faculty development efforts.
The specialization curse: How economic specialization shapes public goods provision
Authors: Barber Benjamin , Mazaheri Nimah 
Published: April 2019

AbstractThis paper examines the relationship between economic specialization and government expenditures. We hypothesize that citizens and firms in economically specialized regions pressure politicians to invest in core economic sectors in lieu of spending on public goods that benefit the broader economy, such as education. We investigate our hypothesis through an examination of the United States and India. We confirm a negative relationship between economically specialized U.S. states and education spending, and a positive relationship between economically specialized U.S. states and firm subsidies. Next, we examine the effects of an immediate shock in a region's level of economic specialization by comparing Indian states created from federal bifurcation. We show how the creation of two highly specialized states (Bihar and Jharkhand) from a diversified state (Undivided Bihar) was associated with a decline in education spending but an increase in subsidies for core sectors.
Nonlinear exact coherent structures in pipe flow and their instabilities
Authors: Ozcakir Ozge , Hall Philip , Tanveer Saleh 
Published: April 2019

In this paper, we present computational results of some two-fold azimuthally symmetric travelling waves and their stability. Calculations over a range of Reynolds numbers ($Re$) reveal connections between a class of solutions computed by Wedin & Kerswell (J. Fluid Mech., vol. 508, 2004, pp. 333–371) (henceforth called the WK solution) and the $Re\rightarrow \infty$ vortex–wave interaction theory of Hall & Smith (J. Fluid Mech., vol. 227, 1991, pp. 641–666) and Hall & Sherwin (J. Fluid Mech., vol. 661, 2010, pp. 178–205). In particular, the continuation of the WK solutions to larger values of $Re$ shows that the WK solution bifurcates from a shift-and-rotate symmetric solution, which we call the WK2 state. The WK2 solution computed for $Re\leqslant 1.19\times 10^{6}$ shows excellent agreement with the theoretical $Re^{-5/6}$, $Re^{-1}$ and $O(1)$ scalings of the waves, rolls and streaks respectively. Furthermore, these states are found to have only two unstable modes in the large $Re$ regime, with growth rates estimated to be $O(Re^{-0.42})$ and $O(Re^{-0.92})$, close to the theoretical $O(Re^{-1/2})$ and $O(Re^{-1})$ asymptotic results for edge and sinuous instability modes of vortex–wave interaction states (Deguchi & Hall, J. Fluid Mech., vol. 802, 2016, pp. 634–666) in plane Couette flow. For the nonlinear viscous core states (Ozcakir et al., J. Fluid Mech., vol. 791, 2016, pp. 284–328), characterized by spatial a shrinking of the wave and roll structure towards the pipe centre with increasing $Re$, we continued the solution to $Re\leqslant 8\times 10^{6}$ and we find only one unstable mode in the large Reynolds number regime, with growth rate scaling as $Re^{-0.46}$ within the class of symmetry-preserving disturbances.
Humics—Their History in the Radiocarbon Intercomparison Studies
Authors: Naysmith Philip , Scott E Marian , Dunbar Elaine , Cook Gordon T 
Published: April 2019

ABSTRACTOver the past 30 years, the format of the radiocarbon (14C) intercomparison studies has changed, however, the selection of sample types used in these studies has remained constant—namely, natural and routinely dated materials that could subsequently be used as in-house reference materials. One such material is peat which has been used 12 times, starting with the ICS in 1988. Peat from Iceland (TIRI), Ellanmore (TIRI), Letham Moss (ICS, VIRI, and SIRI), and St Bees, UK (FIRI and VIRI) have been used, as well as a near-background peat from Siberia. In the main, these peat samples have been provided as the humic acid fraction, with the main advantage being that the humic acid is extracted in solution and then precipitated (the solution phase providing the homogenisation) which is a key requirement for a reference material. In this paper, we will revisit the peat results and explore their findings. In addition, for the last 8 years, the Letham Moss sample has been used in the SUERC 14C laboratory as an in-house standard or reference material. This has resulted in several thousand measurements. Such a rich data set is explored to illustrate the benefits arising from the intercomparison program.
From Moses to Moses: Anthropomorphism and Divine Incorporeality in Maimonides’s Guide and Mendelssohn’s Bi’ur
Authors: Sackson Adrian 
Published: April 2019

AbstractMoses Mendelssohn, arguably the founding figure of modern Jewish philosophy, famously quipped that it was the hours of his youth spent studying the philosophical work of another Moses—Moses Maimonides—that left him with his famously crooked posture. This study investigates one important aspect of the relationship between Mendelssohn and Maimonides: their respective attitudes toward anthropomorphic language in the Bible. Much of the first part of Maimonides’s Guide of the Perplexed is devoted to reinterpretation of scriptural language in light of Maimonides’s non-anthropomorphic, incorporeal conception of God. These chapters constitute a central plank of Maimonides’s religious agenda. Like Maimonides, Mendelssohn was both a philosopher and a religious Jew. His most extensive project intended for a Jewish audience was his German translation of the Pentateuch, accompanied by a Hebrew commentary, known as the Bi’ur. This study examines the manner in which Mendelssohn saw fit to interpret precisely the same set of biblical terms selected by Maimonides for philosophical reinterpretation. Through an investigation of Mendelssohn’s approach to anthropomorphism, divine incorporeality, and philosophical reinterpretation in the biblical commentary, I hope to shed light on an important dimension of the nature of his engagement with Maimonides.
A novel endoscopic hydro-mastoidectomy technique for transcanal endoscopic ear surgery
Authors: Nishiike S , Oshima K , Imai T , Uetsuka S 
Published: April 2019

AbstractBackgroundIn order to remove a cholesteatoma in the mastoid under transcanal endoscopic ear surgery, it is necessary to perform transcanal endoscopic mastoidectomy. Bone dust and blood, however, obscure the surgical field. A novel endoscopic hydro-mastoidectomy technique was developed, in which the operator performs the mastoidectomy ‘underwater’ using a lens cleaning system that provides saline perfusion in the surgical space.MethodsA curved round coarse diamond bur is attached to an otological drill. A lens cleaning sheath is fitted to the endoscope. The surgeon controls the infusion of saline solution by stepping on a footswitch of the power console.ResultsEndoscopic hydro-mastoidectomy washes out bone dust and blood from the surgical field, improving the surgical view during mastoidectomy. Additionally, the operator can easily control the flow of saline perfusion.ConclusionThis technique provides a clear surgical view by washing out bone dust and blood from the surgical area. The setup for endoscopic hydro-mastoidectomy technique is easy and the operator needs only to buy sheaths if they already own the power console, as many otological and rhinological surgeons do.
Rehabilitation following open partial laryngeal surgery: key issues and recommendations from the UK evidence based meeting on laryngeal cancer
Authors: Dawson C , Pracy P , Patterson J , Paleri V 
Published: April 2019

AbstractBackgroundIt is recognised that a limited cohort of patients receive open partial laryngeal surgery in specific centres within the UK, so sharing information around key clinical issues and recommendations for practice is necessary to improve outcomes.MethodsThis position statement provides practice recommendations based on a synthesis of the available evidence presented at the 12th Evidence Based Management day on ‘Laryngeal Cancer’ and the ensuing discussions. Literature searches and critical analysis of available evidence were undertaken and triangulated with the clinical experience of the authors to develop these recommendations.Results and conclusionThis paper presents a comprehensive overview of challenges that the multidisciplinary team may encounter. It provides recommendations for swallow and speech rehabilitation after open partial laryngectomy, and suggests practical ways that these issues may be addressed pre- and post-operatively.
Improved methods for reducing translocation mortality and obtaining reliable population projections for reintroduction of the New Zealand Rifleman Acanthisitta chloris
Authors: WITHERS SARAH , ARMSTRONG DOUG , WARD-SMITH TAMSIN , PARSONS STUART , HAUBER MARK E. 
Published: April 2019

SummaryDespite many notable successes, the failure rate of animal translocations remains high. Conservation practitioners and reintroduction specialists have emphasised the need for ongoing documentation of translocation attempts, whether successful or not, including detailed methodologies and monitoring approaches. This study reports on the first translocation of the North Island subspecies of New Zealand’s smallest bird, the endemic Rifleman Acanthisitta chloris granti. We describe an improved transfer methodology following recommendations arising from a previous translocation of South Island Rifleman Acanthisitta chloris chloris. Key modifications included a reduced capture window, shorter holding times, lack of extended aviary housing, and separation of territorial individuals during holding. Survival from capture to release increased from 52% to 97% using this new methodology. However, only 22% of 83 released birds were found in the reserve the next breeding season, resulting in an initial breeding population of only six males and five females. An integrated Bayesian analysis of three years of subsequent population data, including a population boost from a second translocation, projected a median decrease to 0–5 females over 10 years, but with 95% prediction intervals ranging from 0 to 33. These projections explicitly account for parameter uncertainty, as well as demographic stochasticity, and illustrate the need to do so when making inferences for small reintroduced populations.
Weighted counting of solutions to sparse systems of equations
Authors: Barvinok Alexander , Regts Guus 
Published: April 2019

AbstractGiven complex numbers w1,…,wn, we define the weight w(X) of a set X of 0–1 vectors as the sum of $w_1^{x_1} \cdots w_n^{x_n}$ over all vectors (x1,…,xn) in X. We present an algorithm which, for a set X defined by a system of homogeneous linear equations with at most r variables per equation and at most c equations per variable, computes w(X) within relative error ∊ > 0 in (rc)O(lnn-ln∊) time provided $|w_j| \leq \beta (r \sqrt{c})^{-1}$ for an absolute constant β > 0 and all j = 1,…,n. A similar algorithm is constructed for computing the weight of a linear code over ${\mathbb F}_p$. Applications include counting weighted perfect matchings in hypergraphs, counting weighted graph homomorphisms, computing weight enumerators of linear codes with sparse code generating matrices, and computing the partition functions of the ferromagnetic Potts model at low temperatures and of the hard-core model at high fugacity on biregular bipartite graphs.
Links between sexuality, impulsivity, compulsivity, and addiction in a large sample of university students
Authors: Blum Austin W. , Lust Katherine , Christenson Gary , Grant Jon E. 
Published: April 2019

Objective.Non-heterosexual populations experience poorer mental health outcomes than their heterosexual counterparts. Few studies, however, have examined how mental health varies across the continuum of sexual orientation. Nor has any study examined possible links between sexual orientation and traits of impulsivity and compulsivity, which contribute to functional impairment across a broad spectrum of psychiatric disorders. To address these limitations, the present study sought to identify addictive and impulsive/compulsive problems associated with sexuality in a university sample.Methods.A 156-item anonymous survey was distributed via email to 9449 students at a public university in the United States. Sexual orientation was assessed using the Klein Sexual Orientation Grid, a modification of the Kinsey scale. Current use of alcohol and drugs, mental health status, and academic performance were also assessed, along with valid trait measures of impulsivity and compulsivity.Results.Same-sex attractions were significantly correlated with a range of mental health problems and substance use. Additionally, same-sex attraction was significantly correlated with certain behavioral addictions (compulsive sexual behavior and binge eating disorder) as well as impulsive/compulsive traits. There was no relationship between academic performance and sexual attraction.Conclusion.Same-sex sexuality is associated with impulsive/compulsive behavior and addiction. These health disparities may be related to stable individual differences in self-control.
Neurocognitive predictors of metacognition in individuals at clinical high risk for psychosis
Authors: Shakeel M.K. , Lu L. , Woods S.W. , Perkins D.O. , Addington J. 
Published: April 2019

AbstractBackground:Metacognition refers to the ability to evaluate and control our cognitive processes. While studies have investigated metacognition in schizophrenia and clinical high risk for psychosis (CHR), less is known about the potential mechanisms which result in metacognitive deficits.Aims:We aimed to investigate whether neurocognitive functions including attention, working memory, verbal learning and executive functions predicted the tendency to focus on one’s thoughts (cognitive self-consciousness) and beliefs in the efficacy of one’s cognitive skills (cognitive confidence).Method:Participants (130 CHR individuals) were recruited as part of the multi-site PREDICT study. They were assessed using the Metacognitions Questionnaire (MCQ) as well as measures of executive function (WCST), attention (N-Back), working memory (LNS) and verbal learning (AVLT).Results:Cognitive competence was negatively correlated with N-Back while cognitive self-consciousness was positively correlated with N-Back and LNS. Linear regression analysis with N-Back, AVLT, LNS and WCST as predictors showed that neurocognition significantly predicted cognitive self-consciousness, with N-Back, LNS and WCST as significant predictors. The model accounted for 14% of the variance in cognitive self-consciousness. However, neurocognition did not result in a significant predictive model of cognitive competence.Conclusions:Neurocognition was associated with an increased focus on one’s thoughts, but it was not associated with higher confidence in one’s cognitive skills. Neurocognition accounted for less than one-sixth of the variance in metacognition, suggesting that interventions that target neurocognition are unlikely to improve metacognitive abilities.
Dimming the Seas around Borneo: Contesting Island Sovereignty and Lighthouse Administration amidst the End of Empire, 1946–1948
Authors: Saunders David R. 
Published: April 2019

AbstractThis article examines issues of island sovereignty and lighthouse administration in maritime Southeast Asia in the context of post-war decolonisation. It does so by demonstrating how lax and complacent colonial governance in British North Borneo led to the construction of a lighthouse on contested island territory. By the late 1940s these islands became the focal point of a regional dispute between the Philippines, North Borneo's colonial government, and the United Kingdom. While lighthouses were, in the colonial mind-set, deemed essential for illuminating the coasts and projecting order onto the seas, the Philippine government sought to renege on colonial-era obligations and wrest a new sense of post-colonial legitimacy.The legacy of the Turtle Island transfer was therefore significant in recalibrating imperial lighting in the Sulu Sea, as well as giving rise to a Philippine post-colonial authority that was characterised by an acknowledgement of indigenous Suluk maritime heritage. Similarly, it reflected an extension of previous instances of transnational disputes in the region, where the island shoal had been simultaneously claimed and administered by the United States, the United Kingdom and the historical Sulu Sultanate. While the lighthouse remained destroyed, and the seas dimmed, by mid-1948 the Turtle Islands had attained a new post-colonial and transnational status. Utilising a range of archival sources, memoirs and published material, this article sheds light on an under-examined period of Southeast Asian history.