bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigating the fragmentation pathways of β‐naphthol pigments using liquid chromatography/electrospray ionization quadrupole time‐of‐flight mass spectrometry
Authors: Sabatini Francesca , Degano Ilaria 
Published: March 2020

RationaleToday, β‐naphthol pigments are among the largest and most widely used classes of synthetic organic pigments. Their application fields range from textiles, food and beverages, printing inks, plastics to paint formulations. Most of the research dealing with their study using mass spectrometry focuses on developing sensitive methods for their quantification or their removal from industrial wastewater. Their qualitative recognition in formulations, whose composition is undisclosed by manufacturers, has not been tackled yet.MethodsThe collision‐induced dissociation fragmentation pathways of 10 red and orange widely used pigments of the late 19th to the early 20th centuries, belonging to the β‐naphthol and Naphthol AS classes, were characterized using liquid chromatography/electrospray ionization quadrupole time‐of‐flight mass spectrometry in negative‐ion mode.ResultsThe fragmentation pathways of these pigments were determined, and the pigments are discussed in relation to their chemical structures. The results were used to determine the composition in terms of the secondary components of one of our reference commercial formulations, characterized by a complex mixture of synthesis by‐products.ConclusionsBy coupling the high sensitivity of high‐resolution mass spectrometry with an efficient chromatographic separation optimized for the analysis of β‐naphthol dyes and pigments, we provided a method for the qualitative recognition of this class of molecules in unknown formulations possibly used in different kinds of industrial and synthetic products.
Feeling Worlds: Affective Imaginaries and the Making of Democratic Literacy Classrooms
Authors: Nichols T. Philip , Coleman James Joshua 
Published: March 2020

AbstractThe authors examined how the spaces and structures of literacy classrooms were organized, inhabited, and felt by teachers and students in a new project‐based high school. The authors attended specifically to the political valence of these feelings: how educators characterized certain spatial arrangements (modular furniture and flexible seating) and curricular structures (asynchronous learning) as feeling democratic, in contrast to an authoritarianism that they associated with other instructional orders. The authors recognized that these descriptors, more than mere metaphors, were expressions of affective attachments that conditioned the classrooms that literacy educators worked to build—what the authors call affective imaginaries. These imaginaries, the authors argue, have material consequences both for how educators shape the world of the literacy classroom and for what practices are sanctioned, celebrated, and undermined therein. The authors drew from a three‐year immersive ethnography in an urban public school to explore how educators imagined and shaped democratic literacy classrooms, how students worked within and against these imaginaries, and how resulting frictions impacted literacy learning in these classroom‐worlds. Findings center on two interrelated tensions: (1) how infrastructures associated with democratic classrooms, at times, worked against other infrastructures on which students depended for literacy practice; and (2) how these incongruities led to new ways of surveilling students’ autonomy in their literacy learning. The authors conclude by considering how these findings might guide literacy educators not only in attending to the ostensive, normative, and performative dimensions of affective imaginaries in classrooms but also in opening alternate imaginaries, better attuned to the equitable flourishing of all students.
Extended BMS algebra of celestial CFT
Authors: Fotopoulos Angelos , Stieberger Stephan , Taylor Tomasz R. , Zhu Bin 
Published: March 2020

Abstract
We elaborate on the proposal of flat holography in which four-dimensional physics is encoded in two-dimensional celestial conformal field theory (CCFT). The symmetry underlying CCFT is the extended BMS symmetry of (asymptotically) flat space­ time. We use soft and collinear theorems of Einstein-Yang-Mills theory to derive the OPEs of BMS field operators generating superrotations and supertranslations. The energy­ momentum tensor, given by a shadow transform of a soft graviton operator, implements superrotations in the Virasoro subalgebra of 𝔟𝔪𝔰4. Supertranslations can be obtained from a single translation generator along the light-cone direction by commuting it with the energy-momentum tensor. This operator also originates from a soft graviton and generates a flow of conformal dimensions. All supertranslations can be assembled into a single primary conformal field operator on celestial sphere.
Charged dilaton black hole with multiple Liouville potentials and gauge fields
Authors: Lim Yen-Kheng 
Published: March 2020

Abstract
A solution to an Einstein-Maxwell-dilaton-type theory with M Liouville potentials and N gauge fields is presented, where M and N are arbitrary integers. This exact solution interpolates between the Lifshitz black hole and the topological dilaton black hole. The thermodynamic behaviour of the solution is found to be similar to that of the Lifshitz black hole, where a phase transition may occur for sufficiently small charge in the canonical ensemble, or sufficiently small potential in the grand canonical ensemble.
Computational analysis of particle-laden-airflow erosion and experimental verification
Authors: Castorrini Alessio , Venturini Paolo , Corsini Alessandro , Rispoli Franco , Takizawa Kenji , Tezduyar Tayfun E. 
Published: March 2020

AbstractComputational analysis of particle-laden-airflow erosion can help engineers have a better understanding of the erosion process, maintenance and protection of turbomachinery components. We present an integrated method for this class of computational analysis. The main components of the method are the residual-based Variational Multiscale (VMS) method, a finite element particle-cloud tracking (PCT) method with ellipsoidal clouds, an erosion model based on two time scales, and the Solid-Extension Mesh Moving Technique (SEMMT). The turbulent-flow nature of the analysis is addressed with the VMS, the particle-cloud trajectories are calculated based on the time-averaged computed flow field and closure models defined for the turbulent dispersion of particles, and one-way dependence is assumed between the flow and particle dynamics. Because the target-geometry update due to the erosion has a very long time scale compared to the fluid–particle dynamics, the update takes place in a sequence of “evolution steps” representing the impact of the erosion. A scale-up factor, calculated based on the update threshold criterion, relates the erosions and particle counts in the evolution steps to those in the PCT computation. As the target geometry evolves, the mesh is updated with the SEMMT. We present a computation designed to match the sand-erosion experiment we conducted with an aluminum-alloy target. We show that, despite the problem complexities and model assumptions involved, we have a reasonably good agreement between the computed and experimental data.
A sequential homotopy method for mathematical programming problems
Authors: Potschka Andreas , Bock Hans Georg 
Published: March 2020

AbstractWe propose a sequential homotopy method for the solution of mathematical programming problems formulated in abstract Hilbert spaces under the Guignard constraint qualification. The method is equivalent to performing projected backward Euler timestepping on a projected gradient/antigradient flow of the augmented Lagrangian. The projected backward Euler equations can be interpreted as the necessary optimality conditions of a primal-dual proximal regularization of the original problem. The regularized problems are always feasible, satisfy a strong constraint qualification guaranteeing uniqueness of Lagrange multipliers, yield unique primal solutions provided that the stepsize is sufficiently small, and can be solved by a continuation in the stepsize. We show that equilibria of the projected gradient/antigradient flow and critical points of the optimization problem are identical, provide sufficient conditions for the existence of global flow solutions, and show that critical points with emanating descent curves cannot be asymptotically stable equilibria of the projected gradient/antigradient flow, practically eradicating convergence to saddle points and maxima. The sequential homotopy method can be used to globalize any locally convergent optimization method that can be used in a homotopy framework. We demonstrate its efficiency for a class of highly nonlinear and badly conditioned control constrained elliptic optimal control problems with a semismooth Newton approach for the regularized subproblems.
Thermodynamics of a Hierarchical Mixture of Cubes
Authors: Jansen Sabine 
Published: March 2020

AbstractWe investigate a toy model for phase transitions in mixtures of incompressible droplets. The model consists of non-overlapping hypercubes in $${\mathbb {Z}}^d$$

Z

d

of sidelengths $$2^j$$

2
j

, $$j\in {\mathbb {N}}_0$$

j
∈

N
0

. Cubes belong to an admissible set $${\mathbb {B}}$$
B
such that if two cubes overlap, then one is contained in the other. Cubes of sidelength $$2^j$$

2
j

have activity $$z_j$$

z
j

and density $$\rho _j$$

ρ
j

. We prove explicit formulas for the pressure and entropy, prove a van-der-Waals type equation of state, and invert the density-activity relations. In addition we explore phase transitions for parameter-dependent activities $$z_j(\mu ) = \exp ( 2^{dj} \mu - E_j)$$

z
j

(
μ
)

=
exp

(

2

dj

μ
-

E
j

)

. We prove a sufficient criterion for absence of phase transition, show that constant energies $$E_j\equiv \lambda $$

E
j

≡
λ

lead to a continuous phase transition, and prove a necessary and sufficient condition for the existence of a first-order phase transition.
Pre-service Biology Teachers’ Responses to First-Hand Anomalous Data During Modelling Processes
Authors: Meister Sabine , Krell Moritz , Göhner Maximilian , Upmeier zu Belzen Annette 
Published: March 2020

AbstractIn this research project we investigate the role of responses to anomalous data during modelling processes. Modelling is seen as a comprehensive practice that encompasses various aspects of scientific thinking; hence, it is an important style of scientific thinking, especially if analysed from a process-based perspective. Therefore, it provides the opportunity to understand the role of anomalous data on scientific thinking from a broader perspective. We analysed how pre-service biology teachers (N = 11) reacted to self-generated anomalous data during modelling processes induced by investigating a water black box. The videotaped and transcribed modelling processes were analysed using qualitative content analysis. If anomalous data were recognised, a majority of explanations were based on methodical issues. This finding supports results from previous studies investigating responses to first-hand anomalous data. Furthermore, we found four response patterns to anomalous data during modelling processes:no recognition,no explanation,methodical explanation, andmodel-related explanation. Besides, our study indicates by trend a systematic relation between response patterns to anomalous data and modelling strategies. Consequently, the improvement of responses to anomalous data could be a promising way to foster modelling competencies. We are convinced that an integrated approach to anomalous data and modelling could lead to deeper insights into the role of data in scientific thinking processes.
Do Professionals Take Over? Professionalisation and Membership Influence in Civil Society Organisations
Authors: Heylen Frederik , Willems Evelien , Beyers Jan 
Published: March 2020

AbstractWhile many scholars have postulated the decline of membership influence as an important consequence of the professionalisation of civil society organisations (CSOs), other analysts have argued that traditional membership-driven CSOs are resilient and that hiring professionals does not necessarily diminish membership influence. This study sheds light on this issue by analysing membership influence in a representative sample of approximately 2000 CSOs from five European countries and the European level. As members generally have a strong influence on CSOs’ policy positions, our analysis demonstrates that the pessimistic tone in much contemporary scholarly work is largely unwarranted. On the contrary, hiring professionals does not invariably decrease membership influence and can, when members are closely engaged in advocacy work, even facilitate it.
Does marine planning enable progress towards adaptive governance in marine systems? Lessons from Scotland’s regional marine planning process
Authors: Greenhill L. , Stojanovic T.A. , Tett P. 
Published: March 2020

AbstractThis paper examines marine planning in Scotland and the extent to which it constrains or enables change towards adaptive governance. An in-depth case study of the partnership-based regional marine planning process is presented, based on interviews and documentary analysis. Drawing on adaptive governance theory, analysis focussed on key themes of: (1) local governance and integration across scales; (2) participation and collaboration; (3) learning, innovation and adaptability; and (4) self-organization. Results present regional marine planning as an interface between hierarchical and collaborative governance based on empowerment of regional actors and an attempt to enable coexistence of ‘top-down’ arrangements with experimentation at smaller scales. In this system, national government provides legal legitimacy, economic incentives and policy oversight, while the partnerships support collaboration and innovation at the regional level, based on strong leadership and participation. Contrasting experience of partnership-working is evident between the large and complex region of the Clyde and the island region of Shetland, where devolved powers and a more cohesive and community-based stakeholder group better facilitate adaptive governance. Overall findings of the study show the tensions of institutionalizing adaptive governance and provide insights into how marine planning contributes to governance of marine systems. Firstly, vertical integration between central and decentralized authority in multi-level marine planning arrangements is challenged by an unclear balance of power and accountability between national government and regional marine planning partnerships. Secondly, the interaction between marine planning and existing policy, planning and management emerged as critical, because marine plans may only operate as an instrument to ‘guide’ management and prevailing, limited adaptive capacity in broader management structures constrains adaptive outcomes. Lastly, adaptive governance requires incremental and rapid response to change, but limited financial and technical resources constrain the depth and scale of reflection and ability to act. Understanding the contribution of marine planning requires clarification of the interaction between marine planning and other management (the extent to which it can influence decision-making in other domains) and, in addressing governance deficiencies, attention is also required on the adaptive capacity of existing and emerging legislative frameworks which govern decision-making and management of activities at sea.
The Federal Constitutional Court Rules for a Bright Future of Constitutional Pluralism
Authors: Avbelj Matej 
Published: March 2020

AbstractThe ruling of the German Federal Constitutional Court in the Right to be forgotten II case is an example of constitutional pluralism in action. It demonstrates how a pluralist-minded court can elevate itself from and above the constitutional confines of its own legal order. By integrating the material standards of another legal order in its own review of constitutionality a national constitutional court contributes directly to the strengthening of the fundamental rights of individuals against the national authorities within the overall system of European legal order.
Routine screening and rates of metabolic syndrome in patients treated with clozapine and long-acting injectable antipsychotic medications: a cross-sectional study
Authors: Lydon A. , Vallely J. , Tummon A. , Maher S. , Sabri S. , McLoughlin J. , Liew A. , McDonald C. , Hallahan B. 
Published: March 2020

ObjectivesTo examine the rate of monitoring of metabolic syndrome and actual rates of metabolic syndrome in two patient cohorts [clozapine treatment and long-acting injectable (LAI) antipsychotic] who are reviewed on an equally regular basis (1–4 weekly) for administration of treatment.MethodsClinical and laboratory data are examined on 119 patients treated with clozapine and 116 patients treated with LAI antipsychotic medications to determine the rates of metabolic syndrome and evidence of monitoring for metabolic syndrome in the previous 6 months. Individuals with insufficient data from these cohorts were invited to attend for metabolic screening to determine actual rates of metabolic syndrome in these two cohorts of patients.ResultsAll metabolic parameters were monitored to a significantly greater extent in the clozapine cohort (>90%), compared to those treated with LAI antipsychotic medications (<50%) (blood pressure, weight, lipid and glucose levels; p < 0.001). Metabolic syndrome was present in 38.9% of those treated with clozapine compared to 31.1% of patients treated with LAI antipsychotic medications (X2 = 0.54, p = 0.46).ConclusionsThese findings suggest that a robust screening plan should be in place to monitor for metabolic syndrome in individuals treated with LAI antipsychotic medications. This screening should include measurement of body weight, waist circumference, fasting glucose, lipids and fasting insulin levels. Early recognition of abnormal metabolic parameters allows early intervention, therefore, improving long-term cardiovascular outcomes.
Respectable Citizens: Civic Militias, Local Patriotism, and Social Order in Late Habsburg Austria (1890‒1920)
Authors: Morelon Claire 
Published: March 2020

AbstractThis article analyzes the role of urban civic militias (burgher corps) in Habsburg Austria from the end of the nineteenth century to the aftermath of World War I. Far from a remnant of the early modern past, by the turn of the twentieth century these militias were thriving local institutions. They fostered dynastic patriotism and participated in the growing promotion of shooting among the population in the lead-up to the conflict. But they also played a major role in upholding the bourgeois ideals of protection of social hierarchies and property. In the context of the rise of the workers' movement and social unrest, the militias saw themselves as bulwarks of social order and bastions of bourgeois virtue. They reflected an exclusive conception of armed citizenship opposed to the egalitarian notion of the citizen-soldier that survived into the twentieth century. The sensory experience of burgher corps parades during the patriotic or church celebrations was supposed to convey stability and express hierarchies in the urban space. This article also links the practices of armed civilians before the war to the paramilitary groups that emerged in 1918 and emphasizes the legacy of local conceptions of armed defense of property and of notions of “good” citizenship in the aftermath of the war.
Dietary patterns generated by the Treelet Transform and risk of stroke: a Danish cohort study
Authors: Frederiksen Signe B , Themsen Heidi H , Overvad Kim , Dahm Christina C 
Published: March 2020

AbstractObjective:To relate empirically derived dietary patterns identified using the Treelet Transform (TT) to risk of stroke.Design:A prospective cohort study using the Danish Diet, Cancer and Health cohort. Dietary information was obtained in 1993–1997 using a validated semi-quantitative FFQ. Incident stroke diagnoses, obtained from the Danish National Patient Register, were verified by record review. Dietary patterns were generated using TT, and participants were categorised into quintiles based on their adherence to each pattern. Sex-specific Cox proportional hazard models estimated associations between dietary patterns and stroke.Setting:Denmark.Participants:55 061 men and women aged 50–64 years at the time of enrolment.Results:Three dietary patterns explaining 15·4 % of the total variance were identified: a Prudent pattern, a Western pattern and a Wine & Snacks pattern. During a follow-up time of 10 years, 1513 cases occurred. Comparing the highest to lowest quintiles of intake, adherence to a Prudent pattern was inversely associated with stroke (HRmen 0·74, 95 % CI 0·60, 0·91; HRwomen 0·82, 95 % CI 0·62, 1·08), while adherence to a Western pattern was associated with greater risk (HRmen 1·61, 95 % CI 1·23, 2·10; HRwomen 2·01, 95 % CI 1·48, 2·72). No association was found for a Wine & Snacks pattern for women, but a weak inverse association was found for men (HR 0·81, 95 % CI 0·67, 0·99).Conclusions:The results of this study are broadly in line with current recommendations for a healthy diet to prevent stroke.
Revised Magmatic Source Models for the 2015 Eruption at Axial Seamount Including Estimates of Fault‐Induced Deformation
Authors: Hefner William L. , Nooner Scott L. , Chadwick William W. , Bohnenstiehl DelWayne R. 
Published: March 2020

AbstractAxial Seamount is an active submarine volcano located at the intersection of the Cobb hot spot and the Juan de Fuca Ridge (45°57′N, 130°01′W). Bottom pressure recorders captured co‐eruption subsidence of 2.4–3.2 m in 1998, 2011, and 2015, and campaign‐style pressure surveys every 1–2 years have provided a long‐term time series of inter‐eruption re‐inflation. The 2015 eruption occurred shortly after the Ocean Observatories Initiative (OOI) Cabled Array came online providing real‐time seismic and deformation observations for the first time. Nooner and Chadwick (2016, https://doi.org/10.1126/science.aah4666) used the available vertical deformation data to model the 2015 eruption deformation source as a steeply dipping prolate‐spheroid, approximating a high‐melt zone or conduit beneath the eastern caldera wall. More recently, Levy et al. (2018, https://doi.org/10.1130/G39978.1) used OOI seismic data to estimate dip‐slip motion along a pair of outward‐dipping caldera ring faults. This fault motion complicates the deformation field by contributing up to several centimeters of vertical seafloor motion. In this study, fault‐induced surface deformation was calculated from the slip estimates of Levy et al. (2018, https://doi.org/10.1130/G39978.1) then removed from vertical deformation data prior to model inversions. Removing fault motion resulted in an improved model fit with a new best‐fitting deformation source located 2.11 km S64°W of the source of Nooner and Chadwick (2016, https://doi.org/10.1126/science.aah4666) with similar geometry. This result shows that ring fault motion can have a significant impact on surface deformation, and future modeling efforts need to consider the contribution of fault motion when estimating the location and geometry of subsurface magma movement at Axial Seamount.