bluuebunny/crossref_metadata_2025 huggingface dataset:
Is an irritable ADHD profile traceable using personality dimensions? Replicability, stability, and predictive value over time of data-driven profiles
Authors: Blanken Tessa F. , Courbet Ophélie , Franc Nathalie , Albajara Sáenz Ariadna , Van Someren Eus J.W. , Peigneux Philippe , Villemonteix Thomas
Published: May 2020

Pediatric attention deficit/hyperactivity disorder (ADHD) is a heterogeneous condition. In particular, children with ADHD display varying profiles of dispositional traits, as assessed through temperament and personality questionnaires. Previous data-driven community detection analyses based on temperament dimensions identified an irritable profile of patients with ADHD, uniquely characterized by elevated emotional dysregulation symptoms. Belonging to this profile increased the risk of developing comorbid disorders. Here, we investigated whether we could replicate this profile in a sample of 178 children with ADHD, using community detection based on personality dimensions. Stability of the identified profiles, of individual classifications, and clinical prediction were longitudinally assessed over a 1-year interval. Three personality profiles were detected: The first two profiles had high levels of neuroticism, with the first displaying higher ADHD severity and lower openness to experience (profile 1; N = 38), and the second lower agreeableness (profile 2; N = 73). The third profile displayed scores closer to the normative range on all five factors (profile 3; N = 67). The identified profiles did only partially replicate the temperament-based profiles previously reported, as higher levels of neuroticism were found in two of the three detected profiles. Nonetheless, despite changes in individual classifications, the profiles themselves were highly stable over time and of clinical predictive value. Whereas children belonging to profiles 1 and 2 benefited from starting medication, children in profile 3 did not. Hence, belonging to an emotionally dysregulated profile at baseline predicted the effect of medication at follow-up over and above initial ADHD symptom severity. This finding suggests that personality profiles could play a role in predicting treatment response in ADHD.
Experimental Analysis of Gas–Liquid–Solid Three-Phase Flows in Horizontal Pipelines
Authors: Sassi Paolo , Stiriba Youssef , Lobera Julia , Palero Virginia , Pallarès Jordi
Published: May 2020

The dynamics of three-phase flows involves phenomena of high complexity whose characterization is of great interest for different sectors of the worldwide industry. In order to move forward in the fundamental knowledge of the behavior of three-phase flows, new experimental data has been obtained in a facility specially designed for flow visualization and for measuring key parameters. These are (1) the flow regime, (2) the superficial velocities or rates of the individual phases; and (3) the frictional pressure loss. Flow visualization and pressure measurements are performed for two and three-phase flows in horizontal 30 mm inner diameter and 4.5 m long transparent acrylic pipes. A total of 134 flow conditions are analyzed and presented, including plug and slug flows in air–water two-phase flows and air–water-polypropylene (pellets) three-phase flows. For two-phase flows the transition from plug to slug flow agrees with the flow regime maps available in the literature. However, for three phase flows, a progressive displacement towards higher gas superficial velocities is found as the solid concentration is increased. The performance of a modified Lockhart–Martinelli correlation is tested for predicting frictional pressure gradient of three-phase flows with solid particles less dense than the liquid.
Palladium(II) on 4 Å Molecular Sieves: A Simple and Reusable Catalyst for the Preparation of Ynones
Authors: Juhász Kinga , Hell Zoltán
Published: May 2020

Pd2+ on 4 Å molecular sieves support has been prepared and investigated. The catalyst has successfully been used in the reaction of acyl chlorides and terminal alkynes yielding ynones. The catalyst can be reused without significant loss of activity.

Graphic Abstract
Motivation to Write: Conversations with Emergent Writers
Authors: Barratt-Pugh Caroline , Ruscoe Amelia , Fellowes Janet
Published: May 2020

This article describes the processes and outcomes of a research project exploring children’s motivation to write, undertaken by four pre-primary teachers in Western Australia. The teachers adopted a sociocultural theoretical framework using child centred participatory methodology, in which 109 children aged between five and six years shared their views of writing in conversation with their teacher. Thematic analysis in conjunction with statistical analysis indicated that the majority of children were motivated to write. They had a positive attitude towards writing, evidenced by their self-efficacy and were developing aspects of self-determination evidenced by their sense of ownership and control of the codes of writing. They had some understanding of the value of writing as a means of supporting reading and securing a positive future, thus enhancing their motivation to write. However, a small group of children indicated that they did not like writing, found writing hard, and did not know how or what to write. In addition, few children mentioned writing as a means of communication. The absence of purpose and audience in the children’s responses, was partly explained by the teachers’ focus on the codes of writing, potentially impacting on children’s motivation. This prompted the teachers to re-conceptualise their writing program in ways that engaged children in authentic writing tasks, while continuing to scaffold their understanding of the codes of writing. This collaborative approach to research, in ways that privilege children’s voices, has implications for informing pedagogy across a range of early childhood contexts and curriculum areas.
Decay Constants of S Wave Heavy Quarkonia
Authors: Azhothkaran Bhaghyesh , K. Nilakanthan V.
Published: May 2020

We derive expressions for the decay constants of S wave pseudoscalar and vector quarkonium ($Q\bar {Q}$QQ̄) states through approximating the quark model definition by including terms uptok2/c2. Using the derived formula, the decays constants for ground and excited states are calculated. Our predictions are found to be in good agreement with the available experimental and lattice results.
Parental Perceptions and Decisions Regarding Maintaining Bilingualism in Autism
Authors: Howard Katie , Gibson Jenny , Katsos Napoleon
Published: May 2020

A growing body of evidence suggests that bilingual exposure does not negatively impact children on the autism spectrum. This study sought to illuminate parents’ perceptions and choices regarding maintaining bilingualism in autism. Semi-structured interviews were conducted with 16 family members in England and Wales. Data were analysed using interpretative phenomenological analysis (IPA). Although parents expressed positive attitudes towards bilingualism, these views were not always congruent with their language practices. Instead, several factors influenced decisions about language maintenance in autism, including the severity of the child’s autism, advice received, and the importance of English as the dominant societal language. This article calls for greater support for families in making language decisions that are suitable for the individual child and their family.
A versatile route to edge-specific modifications to pristine graphene by electrophilic aromatic substitution
Authors: Shellard Philippa M. , Srisubin Thunyaporn , Hartmann Mirja , Butcher Joseph , Fei Fan , Cox Henry , McNamara Thomas P. , McArdle Trevor , Shepherd Ashley M. , Jacobs Robert M. J. , Waigh Thomas A. , Flitsch Sabine L. , Blanford Christopher F.
Published: May 2020

This work presents a general method for producing edge-modified graphene using electrophilic aromatic substitution. Five types of edge-modified graphene were created from graphene/graphite nanoplatelets sourced commercially and produced by ultrasonic exfoliation of graphite in N-methyl-2-pyrrolidone. In contrast to published methods based on Friedel–Crafts acylation, this method does not introduce a carbonyl group that may retard electron transfer between the graphene sheet and its pendant groups. Graphene sulphonate (G–SO3−) was prepared by chlorosulphonation and then reduced to form graphene thiol (G–SH). The modifications tuned the graphene nanoparticles’ solubility: G–SO3− was readily dispersible in water, and G–SH was dispersible in toluene. The synthetic utility of the directly attached reactive moieties was demonstrated by creating a “glycographene” through radical addition of allyl mannoside to G–SH. Chemical modifications were confirmed by FT-IR and XPS. Based on XPS analysis of edge-modified GNPs, G–SO3− and G–SH had a S:C atomic ratio of 0.3:100. XPS showed that a significant amount of carbon sp2 character remained after functionalisation, indicating little modification to the conductive basal plane. The edge specificity of the modifications was visualised on edge-modified samples of graphene produced by chemical vapour deposition (CVD): scanning electron microscopy of gold nanoparticles attached to G–SH samples, epifluorescence microscopy of a glycographene bioconjugate with a fluorescently tagged lectin, and quenched stochastic optical reconstruction microscopy (qSTORM) of thiol-reactive fluorophores on CVD G–SH samples. Microelectrochemistry of unmodified CVD graphene and dye-modified CVD G–SH showed no statistically significant difference in interfacial electron transfer rate (k0). This platform synthesis technology can allow pristine graphene, rather than graphene oxide or its derivatives, to be used in applications that require the superior mechanical or electronic properties of pristine graphene, including theranostics and tissue engineering.

Graphical Abstract
Doctors that “doctor” sickness certificates: cunning intelligence as an ability and possibly a virtue among Swedish GPs
Authors: Shutzberg Mani
Published: May 2020

The relations of power between healthcare-related institutions and the professionals that interact with them are changing. Generally, the institutions are gaining the upper hand. Consequently, the intellectual abilities necessary for professionals to pursue the internal goods of healthcare are changing as well. A concrete case is the struggle over sickness benefits in Sweden, in which theSwedish Social Insurance Agency(SSIA) and physicians are important stakeholders. The SSIA has recently consolidated its power over the sickness certificates that doctors issue for their patients. The result has been a stricter gatekeeping of sickness benefits. In order to combat the inroads made by state institutions into sickness certification, and into the sphere of medical practice, some doctors have developed cunning “techniques” to maximize the chance to have their sickness certificates accepted by the SSIA. This article attempts to demonstrate that cunning intelligence—the ability of the weak to “outsmart” a stronger adversary—plays an important role in the practice of medicine. Cunning intelligence is not merely a defective form of prudence (phronesis), nor is it simply an instance of instrumental reason (techne), but rather an ability that occupies a distinct place among the intellectual abilities generally ascribed to professionals.
Non-Controlling Minority Shareholdings and Collusion
Authors: de Haas Samuel , Paha Johannes
Published: May 2020

This article merges theoretical literature on non-controlling minority shareholdings (NCMS) in a coherent model to study the effects of NCMS on competition and collusion. The model encompasses both the case of a common owner holding shares of rival firms as well as the case of cross ownership among rivals. We find that by softening competition, NCMS weaken the sustainability of collusion under a greater variety of situations than was indicated by earlier literature. Such effects exist, in particular, in the presence of an effective competition authority.
Second-personal theodicy: coming to know why God permits suffering by coming to know God himself
Authors: Balfour Dylan
Published: May 2020

The popularity of theodicy over the past several decades has given rise to a countermovement, “anti-theodicy”, which admonishes attempts at theodicy for various reasons. This paper examines one prominent anti-theodical objection: that it is hubristic, and attempts to form an approach to theodicy which evades this objection. To do so I draw from the work of Eleonore Stump, who provides a framework by which we can glean second-personal knowledge of God. From this knowledge, I argue that we can derive a theodicy which does not utilise the kind of analytic theorising anti-theodicists accuse of intellectual hubris.
Verification of empirical equations describing subsidence rate of peatland in Central Poland
Authors: Oleszczuk Ryszard , Zając Ewelina , Urbański Janusz
Published: May 2020

Currently, due to prolonged soil drought, dehydrated peat soils are particularly exposed to subsidence and, as a consequence, even to disappearance from the natural environment, in which they perform many important functions, e.g. storage of organic carbon and water retention. Therefore, predicting of settlement and disappearance processes of these soils is very important issue. This study was conducted to: (1) determine the degree and rate of subsidence of a drained peatland over 40 years, (2) establish the effect of subsidence on the depth of ditches and a watercourse, (3) verify empirical equations describing the subsidence based on field measurements. The work was carried out on fen in Central Poland which was managed as a grassland until around 2000, and then its use was discontinued. Subsidence rate was estimated from measurements of the peat deposit thickness taken in 11 locations in 1978 and 2018. Fourteen empirical equations used for estimating subsidence rate of drained peatlands were selected to verify the calculations against field data. The average subsidence rate of the studied peatland was relativity low (0.62 cm year−1), which may be associated with abandoning of agricultural use for the last 20 years. Loss of peat thickness varied from 5 to 41% and depended rather on drainage intensity than on its initial depth. In general, six from the verified empirical equations were useful in estimating average subsidence rate. Four equations seemed to be the most useful for deeply drained sites. Estimation of the subsidence solely on the basis of time since drainage may be biased.
A Novel High-Strength Zn-3Ag-0.5Mg Alloy Processed by Hot Extrusion, Cold Rolling, or High-Pressure Torsion
Authors: Wątroba Maria , Bednarczyk Wiktor , Kawałko Jakub , Lech Sebastian , Wieczerzak Krzysztof , Langdon Terence G. , Bała Piotr
Published: May 2020

A novel Zn-3Ag-0.5Mg alloy was plastically deformed using 3 processing paths: hot extrusion (HE), HE followed by cold rolling (CR) and high-pressure torsion (HPT). The processed samples consisted of the η-Zn phase, ε-Zn3Ag precipitates within the matrix, and nanometric Zn2Mg precipitates within the Zn11Mg2 phase located at the grain boundaries. Both the η-Zn phase and Mg-rich phases were enriched in Ag. Electron backscattered diffraction was used to examine the effects of grain size and texture on mechanical behavior with tensile tests performed at room temperature (RT) at different strain rates. The coarse-grained (~ 6 µm) samples after HE exhibited high strength with brittleness due to dislocation interaction with dispersed precipitates and, to some extent, with twinning activation. Significant grain refinement and processing at RT gave an increase in elongation to over 50 pct in CR and 120 pct in HPT. Ductile CR samples with an average grain size of ~ 2 µm and favorable rolling deformation texture gave a yield strength of ~ 254 MPa, a tensile strength of ~ 456 MPa, and a reasonable strain rate sensitivity. These values for the CR samples meet the mechanical requirements for biodegradable stents in cardiovascular applications.
Body composition after allogeneic haematopoietic cell transplantation/total body irradiation in children and young people: a restricted systematic review
Authors: Lorenc Ava , Hamilton-Shield Julian , Perry Rachel , Stevens Michael ,   on behalf of the CTYA HSCT Adipose and Muscle Late Effects Working Group, Wootton Stephen , Feelisch Martin , Dragsted Lars O. , Dirks Marlou , Shoaie Saeed , Mardinoglu Adil , Roche Helen
Published: May 2020

Purpose

To collate evidence of changes in body composition following treatment of leukaemia in children, teenagers and young adults (CTYA, 0–24 years) with allogeneic haematopoietic stem cell transplant and total body irradiation (HSCT+TBI).

Methods

Papers were identified by searching Medline and Google Scholar, reference lists/citations and contacting key authors, with no date or language restrictions. Inclusion criteria were as follows: leukaemia, HSCT+TBI, aged ≤ 24 years at HSCT and changes in body composition (total fat, central adiposity, adipose tissue function, muscle mass, muscle function). Quality was assessed using a brief Newcastle–Ottawa scale.

Results

Of 900 papers, 20 were included: seven controlled, five uncontrolled studies and eight case reports. Study quality appeared good. There was little evidence of differences in total fat/weight for HSCT + TBI groups (compared to healthy controls/population norms/short stature controls). There was some evidence of significantly higher central adiposity and differences in adipose tissue function (compared to leukaemic/non-leukaemic controls). Muscle mass was significantly lower (compared to healthy/obese controls). Muscle function results were inconclusive but suggested impairment. Case reports confirmed a lipodystrophic phenotype.

Conclusions

Early remodelling of adipose tissue and loss of skeletal muscle are evident following HSCT + TBI for CTYA leukaemia, with extreme phenotype of overt lipodystrophy. There is some evidence for reduced muscle effectiveness.

Implications for Cancer Survivors

Body composition changes in patients after HSCT + TBI are apparent by early adult life and link with the risk of excess cardiometabolic morbidity seen in adult survivors. Interventions to improve muscle and/or adipose function, perhaps utilizing nutritional manipulation and/or targeted activity, should be investigated.
The Legal Implications and Remedies Concerning Revenge Porn and Fake Porn: A Common Law Perspective
Authors: Mania Karolina
Published: May 2020

Based on US and British regulations in force, this article offers an overview of legislation of two Common Law countries in the area of modern forms of law infringements focusing on the notions of revenge porn and fake porn. The first part contains definitions and descriptions of the terms ‘revenge porn’ and ‘fake porn’, pointing out to the context of the relationship between the dynamic technological development and use of artificial intelligence on the one hand and the regulatory framework failing to meet the current needs on the other. Further, examination is conducted of US and British legislation in force divided into civil and criminal law, indicating legislative gaps as well as the inefficiency of the existing legal solutions and presenting a range of proposals of legislative changes. The considerations have been supplemented with the results of the author’s assessment of sociological and statistical research available in source literature carried thus far in the field in question. The following section is dedicated to a comparative assessment of American and British legal solutions based on selected, critical issues. The final parts of the article serve to postulate systemic changes in legislation and is a proposal to introduce out-of-court dispute settlement methods in legal disputes pertaining to the matters discussed herein, and to frame future research directions.
Short-Time Heat Content Asymptotics via the Wave and Eikonal Equations
Authors: Schilling Nathanael
Published: May 2020

In this short paper, we derive an alternative proof for some known (van den Berg & Gilkey 2015) short-time asymptotics of the heat content in a compact full-dimensional submanifolds S with smooth boundary. This includes formulae like $$\begin{aligned} \int _{S} \exp (t\Delta ) (f \mathbb {1}_{S}) \,\mathrm {d}V= \int _S f \,\mathrm {d}V- \sqrt{\frac{t}{\pi }} \int _{\partial S} f \,\mathrm {d}A+ o(\sqrt{t}),\quad t \rightarrow 0^+, \end{aligned}$$

∫
S

exp

(
t
Δ
)

(
f

1
S

)

d
V
=

∫
S

f

d
V
-

t
π

∫

∂
S

f

d
A
+
o

(

t

)

,

t
→

0
+

,

and explicit expressions for similar expansions involving other powers of $$\sqrt{t}$$

t

. By the same method, we also obtain short-time asymptotics of $$\int _S \exp (t^m\Delta ^m)(f \mathbb {1}_S)\,\mathrm {d}V$$

∫
S

exp

(

t
m

Δ
m

)

(
f

1
S

)

d
V

, $$m \in \mathbb N$$

m
∈
N

, and more generally for one-parameter families of operators $$t \mapsto k(\sqrt{-t\Delta })$$

t
↦
k
(

-
t
Δ

)

defined by an even Schwartz function k.
Malaxideae (Orchidaceae) in Madagascar, the Mascarenes, Seychelles and Comoro Islands
Authors: Hermans Johan , Verlynde Simon , Cribb Phillip , Ramandimbisoa Brigitte , Hervouet Jean-Michel , Bernet Patrice
Published: May 2020

Summary.The tribe Malaxideae (Orchidaceae, subfamily Epidendroideae) (sensuPridgeonet al. 2005: 453) in Madagascar and adjacent archipelagos is revised. In this region it comprises the four genera:Liparis, Malaxis, OberoniaandStichorkis. All of the species are described and their typification, history, identification, distribution and habitat are discussed. Conservation assessments and distribution maps are included. A checklist of the genera and species and a key to their identification are provided. Six new species:Liparis bemarahensis, L. bosseri, L. chantaliae, L. laurentii, L. magnificaandL. superclareaeare described.
Compositionality Meets Belief Revision: a Bayesian Model of Modification
Authors: Strößner Corina
Published: May 2020

The principle of compositionality claims that the content of a complex concept is determined by its constituent concepts and the way in which they are composed. However, for prototype concepts this principle is often too rigid. Blurring the division between conceptual composition and belief update has therefore been suggested (Hampton and Jönsson 2012). Inspired by this idea, we develop a normative account of how belief revision and meaning composition should interact in modifications such as “red apple” or “pet hamster”. We do this by combining the well-known selective modification model (Smith et al.Cognitive science12(4):485–527 1988) with the rules of Bayesian belief update. Moreover, we relate this model to systems of defeasible reasoning as discussed in the field of artificial intelligence.
Tribological properties of polyimide composites reinforced with fibers rubbing against Al2O3
Authors: Qi Huimin , Zhang Ga , Zheng Zhiqin , Yu Jiaxin , Hu Chao
Published: May 2020

Reinforcing fillers are of great importance in tribological performance and tribofilm formation of polymeric composites. In this study, the tribological properties of aramid particle (AP) and short carbon fiber (SCF) reinforced polyimide (PI) composites were added to hexagonal boron nitride (h-BN), and silica (SiO2) nanoparticles sliding against alumina were comprehensively investigated. When sliding occurred with AP-reinforced PI composites, the tribological properties were not closely depended on the pressure × velocity (p × ν) factors and the nanoparticles. The interactions between AP and its counterpart could not induce tribo-sintering of the transferred wear debris. As such, the tribofilm seemed to be in a viscous state, leading to higher friction and wear. However, the inclusion of hard SCF into the PI matrix changed the interfacial interactions with alumina. A robust tribofilm consisting of a high fraction of silica was generated when the SCF-reinforced PI was added to the SiO2 nanoparticles. It exhibited a high load-carrying capability and was easily sheared. This caused a significant decrease in the friction and wear of the PI composite at 8 MPa·1m/s. Moreover, due to their high melting point, few h-BN nanoparticles were observed in the tribofilm of the SCF-reinforced PI when hexagonal boron nitride was added.
The TLR4-MyD88-NF-κB pathway is involved in sIgA-mediated IgA nephropathy
Authors: Zhang Junjun , Mi Yiming , Zhou Ruwen , Liu Zhangsuo , Huang Bo , Guo Ruxue , Wang Panfei , Lu Yanru , Zhou Yali , Quan Songxia
Published: May 2020

Previous studies have shown that secretory IgA (sIgA) was critically involved in IgA nephropathy (IgAN) immune responses. Toll-like receptors (TLRs), especially TLR4 which participates in mucosal immunity, may be involved in the pathogenesis of IgAN. The purpose of this study was to investigate whether sIgA and TLR4 interact to mediate kidney damage in IgAN patients. IgAN patients with positive sIgA deposition in renal tissues were screened by immunofluorescence assay. Patient salivary sIgA (P-sIgA) was collected and purified by jacalin affinity chromatography. Salivary sIgA from healthy volunteers was used as a control (N-sIgA). Expression of TLR4, MyD88, NF-κB, TNF-α, IL-6, and MCP-1 were detected in the mesangial area of IgAN patients by immunohistochemistry, the expression levels in patients with positive sIgA deposition were higher than that with negative sIgA deposition. Human renal mesangial cells (HRMCs) were cultured in vitro, flow cytometry showed that P-sIgA bound HRMCs significantly better than N-sIgA. HRMCs were cultured in the presence of sIgA (400 μg/mL) for 24 h, compared with cells cultured with N-sIgA, HRMCs cultured in vitro with P-sIgA showed enhanced expression of TLR4, increased secretion of TNF-α, IL-6, and MCP-1, and increased expression of MyD88/NF-κB. TLR4 shRNA silencing and NF-κB inhibition both reduced the ability of HRMCs to synthesize TNF-α, IL-6, and MCP-1. Our results indicate that sIgA may induce high expression of TLR4 in HRMCs and further activate downstream signalling pathways, prompting HRMCs to secrete multiple cytokines and thereby mediating kidney damage in IgAN patients.
Introducing Summative Progress Testing in Radiology Residency: Little Change in Residents’ Test Results After Transitioning from Formative Progress Testing
Authors: Rutgers D. R. , van Schaik J. P. J. , Kruitwagen C. L. J. J. , Haaring C. , van Lankeren W. , van Raamt A. F. , ten Cate O.
Published: May 2020

Introduction

Educational effects of transitioning from formative to summative progress testing are unclear. Our purpose was to investigate whether such transitioning in radiology residency is associated with a change in progress test results.

Methods

We investigated a national cohort of radiology residents (N > 300) who were semi-annually assessed through a mandatory progress test. Until 2014, this test was purely formative for all residents, but in 2014/2015, it was transitioned (as part of a national radiology residency program revision) to include a summative pass requirement for new residents. In 7 posttransitioning tests in 2015–2019, including summatively and formatively tested residents who followed the revised and pre-transitioning residency program, respectively, we assessed residents’ relative test scores and percentage of residents that reached pass standards.

Results

Due to our educational setting, most posttransitioning tests had no residents in the summative condition in postgraduate year 4–5, nor residents in the formative condition in year 0.5–2. Across the 7 tests, relative test scores in postgraduate year 1–3 of the summative resident group and year 3.5–4.5 of the formative group differed significantly (p < 0.01 and p < 0.05, respectively, Kruskal-Wallis test). However, scores fluctuated without consistent time trends and without consistent differences between both resident groups. Percentage of residents reaching the pass standard did not differ significantly across tests or between groups.

Discussion

Transitioning from formative to summative progress testing was associated with overall steady test results of the whole resident group in 4 post-transitioning years. We do not exclude that transitioning may have positive educational effects for resident subgroups.
Remote Sensing’s Recent and Future Contributions to Landscape Ecology
Authors: Crowley Morgan A. , Cardille Jeffrey A.
Published: May 2020

Purpose of Review

The purpose of this article is to review landscape ecology research from the past 5 years to identify past and future contributions from remote sensing to landscape ecology.

Recent Findings

Recent studies in landscape ecology have employed advances made in remote sensing. These include the use of reliable and open datasets derived from remote sensing, the availability of new sources for freely available satellite imagery, and machine-learning image classification techniques for classifying land cover types. Remote sensing data sources and methods have been used in landscape ecology to examine landscape structure. Additionally, these data sources and methods have been used to analyze landscape function including the effects of landscape structure and landscape change on biodiversity and population dynamics. Lastly, remote sensing data sources and methods have been used to analyze historical landscape changes and to simulate future landscape changes.

The ongoing integration of remote sensing analyses in landscape ecology will depend on continued accessibility of free imagery from satellite sources and open-access data-analysis software, analyses spanning multiple spatial and temporal scales, and novel land cover classification techniques that produce accurate and reliable land cover data. Continuing advances in remote sensing can help to address new landscape ecology research questions, enabling analyses that incorporate information that ranges from ground-based field samples of organisms to satellite-collected remote sensing data.
Analysis and characterization of the friction of vehicle body vibration dampers
Authors: Körner Fridtjof , Mayer Ralph
Published: May 2020

The friction at the contact surfaces of a vehicle body vibration damper, which are moved relatively to each other, influences its transmission behavior at the start of movement (breakaway force) as well as with excitation signals of higher velocity and thus has an impact on the comfort properties of the damper. According to Vibracoustic (Die wichtigsten Kriterien für deutsche Autofahrer beim Autokauf, Springer Fachmedien Wiesbaden GmbH, Wiesbaden, 2019), for most German drivers (63%) comfort (in addition to brand and appearance) before driving dynamics (53%) and environmental compatibility (48%) is the most important criteria when evaluating a new car, which explains the importance of this vehicle characteristics. Furthermore, the friction is present with any relative movement of the damper and is, therefore, relevant for the design of the damper and the associated vertical dynamics. The friction is generally determined in the fully assembled state of the damper, including oil filling and gas pressure at a very low movement velocity to eliminate the influence of the damping force. This measurement method allows no or only inadequate statements about the friction behavior at, e.g. more dynamic excitation scenarios. As a result, the aim should be to characterize the friction properties without the influence of hydraulic damping at the start of movement or reversal of movement, as well as at higher movement velocities. Another goal is to evaluate the influence of the internal pressure of the damper on its friction behavior. The test damper used here is a commercially available monotube damper that has been modified in accordance with the requirements for these tests. The results shown below can be used as starting variables for further investigations for the targeted optimization of the friction properties and thus for the improvement of driving comfort. The reduction in damper friction promises an increase in comfort due to the improved decoupling of the vehicle body from the road excitation. Furthermore, the data obtained enable the level of detail of simulation models to be increased and serve as a basis for comparing different friction pairings and contact surfaces in the damper. For the substitution of coatings (chrome-free piston rods → environmental protection) or tube materials (aluminum matrix composites → lightweight construction) as well as for changes in the surface structure and roughness, the results enable an evaluation of the friction properties compared to conventional dampers and the adjustment of the friction pairings in the sense of the best possible functionality.
Forced Migration, Older Refugees and Displacement: Implications for Social Work as a Human Rights Profession
Authors: Karlsson Sofie Ghazanfareeon , Jönsson Jessica H.
Published: May 2020

This article explores the conditions of globally displaced older refugees and outlines the implications for social work as a human rights profession. The study is based on a literature review and two current case examples of globally displaced older refugees facing long-term structural discrimination and human rights violation: older Rohingyas at the Bangladesh-Myanmar border and older Palestinians at the Israel-Gaza and Lebanon borders. The authors suggest that social workers as ‘front-line human rights workers’ are uniquely placed to identify needs, and take actionable steps to support and advocate for the human rights of older displaced refugees. It is argued that global social work ethics and principles of social justice and human rights should underpin social work practices that engage people and structures in order to address life challenges and enhance the well-being of displaced older refugees in war zones, at borders and in refugee camps. Future research and welfare projects that aim to analyse the political context that forms the living conditions of forcibly displaced older refugees, whilst enhancing the importance of social workers in interprofessional collaborations in these areas, are discussed.
Every 1D persistence module is a restriction of some indecomposable 2D persistence module
Authors: Buchet Mickaël , Escolar Emerson G.
Published: May 2020

A recent work by Lesnick and Wright proposed a visualisation of 2D persistence modules by using their restrictions onto lines, giving a family of 1D persistence modules. We give a constructive proof that any 1D persistence module with finite support can be found as a restriction of some indecomposable 2D persistence module with finite support. As consequences of our construction, we are able to exhibit indecomposable 2D persistence modules whose support has holes as well as an indecomposable 2D persistence module containing all 1D persistence modules with finite support as line restrictions. Finally, we also show that any finite-rectangle-decomposable nD persistence module can be found as a restriction of some indecomposable $$(n+1)$$

(
n
+
1
)

D persistence module.
Groundwater Constituents and Trace Elements in the Basement Aquifers of Africa and Sedimentary Aquifers of Asia: Medical Hydrogeology of Drinking Water Minerals and Toxicants
Authors: Nwankwo Chihurumnanya Belema , Hoque Mohammad A. , Islam Md Atikul , Dewan Ashraf
Published: May 2020

The use of groundwater, a major source of potable water, in developing countries has proven to be an invaluable resource for local populations. The ability to safely use this water for drinking, however, depends on its chemical quality, a factor primarily controlled by various aquifer attributes such as geology and geochemistry. On a global scale, groundwater is primarily sourced from either sedimentary or basement aquifers. In this study, we compared the groundwater constituents and trace elements found in these two types of aquifer system in the context of medical hydrogeology, i.e. the status of groundwater mineral nutrients and pollutants, and their complex interaction in relation to human health. The evaluation work used a collated geochemical dataset developed for Bangladesh sedimentary aquifer data (n = 474), basement aquifer data from Northern Ghana (n = 184) and Central Tanzania (n = 73). An assessment of the mineral concentration in regards to dietary needs showed that the sedimentary aquifers found in Bangladesh have almost double the concentration of salubrious minerals such as calcium, magnesium and iron relative to the basement aquifers (Ghana and Tanzania). It should be noted, however, that the groundwater was also found to contain excessive levels of arsenic in the sedimentary aquifers and high levels of fluoride in those countries sourcing water from within basement rock; levels at which both elements pose a serious public health threat. Excessive sodium in drinking water is also an issue as this, combined with the normal dietary sodium level intake, may lead to hypertension and cardio-metabolic diseases. Unfortunately, health-based guideline values for drinking water containing sodium are non-existent or poorly defined, a fact which warrants further consideration at both a national and international level. The use of groundwater for drinking may assist in increasing the level of mineral nutrient uptake in the local population, however, it must also be augmented by a nutritious food supply in order to satisfy normal human dietary requirements.
Growth of centimeter scale carbon wires using in-liquid AC arc discharge
Authors: Jankowski Krzysztof , Ostafin Agnes , Tomasik Mikołaj , Nyokong Tebello , Britton Jonathan
Published: May 2020

A novel observation of the formation of carbon wire in a carbon-based liquid solvent, using in liquid high voltage AC arc discharge is described. The authors describe the observed phenomenon, technical equipment needed to achieve the effect and preliminary qualitative results of obtained material. The wire consisted of well packed layers of carbon elements. The arc-discharge method is a simple, low cost method for the production of three dimensional carbon structures. A further research is needed to get a thorough understanding of the phenomenon.
Fokker-Planck equations of jumping particles and mean field games of impulse control
Authors: Bertucci Charles
Published: May 2020

This paper is interested in the description of the density of particles evolving according to some optimal policy of an impulse control problem. We first fix the sets from which the particles jump and explain how we can characterize such a density. We then investigate the coupled case in which the underlying impulse control problem depends on the density we are looking for: the mean field game of impulse control. In both cases, we give a variational characterization of the densities of jumping particles.
Can Restructuring Gains Be Sustained Without Ownership Changes? Evidence from Withdrawn Privatizations
Authors: Lattanzio Gabriele , Megginson William L.
Published: May 2020

By employing a novel, hand-collected sample of withdrawn and completed share issue privatizations, we show that both groups undergo comparable restructuring processes over the 3 years preceding the event. We employ matching procedures to explicitly control for the restructuring effect, isolating the effect of the ownership transfer from state to private investors on corporate policies and performance. We document that, absent the ownership transfer, most of the gains realized during the restructuring process are reabsorbed over the posttreatment period. The transition from state to private ownership thus represents a necessary condition for the long-term success of privatization programs.
A Contested Corporeality: Solidarity, Self-Fulfillment, and Transformation through African-Derived Dancing
Authors: Hammergren Lena
Published: May 2020

This article focuses on an analysis of ways in which conflicts between dancing as an act of solidarity, a tool for self-fulfillment, or as a form of an interpretative transformation have been played out in practicing dancing derived from different “African” cultures within a Swedish context. This period embraces African-American theatrical jazz dance during the 1960s and the more contemporary interest in dances from West African countries. The examples articulate modes of cultural appropriation. The question raised is whether a focus on embodied experience of dancing can subvert the practice of appropriation, or if the two approaches are contradictory.
Significant Changes in Microbial Communities Associated With Reef Corals in the Southern South China Sea During the 2015/2016 Global‐Scale Coral Bleaching Event
Authors: Qin Zhenjun , Yu Kefu , Liang Jiayuan , Yao Qiucui , Chen Biao
Published: May 2020

Microbial communities play important roles as coral symbionts, but their changes among coral species in response to thermal bleaching events are not well understood. Therefore, we focused on the microbial communities associated with coral species in the southern South China Sea (SCS) during the 2015/2016 global‐scale coral bleaching event (GCBE). Samples of eight typical coral species were collected before and during the GCBE, and the microbial communities, potential gene functions, and zooxanthellae densities (ZDs) were analyzed. We found that ZDs significantly decreased among all coral species during the GCBE. Alpha diversities of the microbial communities also significantly decreased at different taxonomic levels among these coral species. Principal coordinates analysis revealed significant differences in beta diversity among coral specimens, which were divided into two groups before and during the GCBE. Microbial gene functional prediction showed that microbial community physiology significantly changed during the GCBE, with decreased coverage in metabolism, membrane transport, replication and repair, and increased coverage in cell motility and signal transduction. Moreover, the abundance of potential pathogens such as the genus Vibrio greatly increased (from ~0.28% to ~52.92%) during the GCBE, whereas the abundance of several beneficial microbes such as Endozoicomonas significantly decreased (from ~26.10% to ~0.91%), resulting in an obvious decline in the coral‐holobiont physiological functions. Thus, the GCBE greatly affected the health of coral species in the southern SCS, by reducing the biodiversity of associated microbial communities and increasing the abundance of potential pathogens.
Increasing the Space–Time Resolution of Mapped Sea Surface Height From Altimetry
Authors: Archer Matthew R. , Li Zhijin , Fu Lee‐Lueng
Published: May 2020

We present a mapping methodology to improve the resolution of gridded sea surface height (SSH) from multisatellite along‐track measurements, and apply it in the California Current system. This is motivated by the upcoming Surface Water and Ocean Topography (SWOT) satellite mission, which will collect novel high‐resolution wide‐swath SSH measurements. The calibration/validation of SWOT will be in the California Current and requires independent observations of SSH spatial variability. Our objective was to discover how far we could push the space–time resolution of SSH maps based on the existing altimetry constellation. Currently, the best SSH maps for the region are from AVISO's global product based on optimal interpolation (OI). Our methodology is based on 2‐D variational analysis (2DVAR), and we address some limitations of the AVISO OI global parameterization that restrict the resolution. Key improvements are (1) use of a background field incorporating mesoscale information, as opposed to a long‐term mean field; (2) optimized regional parameters; and (3) a representation error term in the observational error covariance matrix to account for the spread of measurements in time. Using a suite of independent remote and in situ observations, we show the 2DVAR method can produce higher‐resolution SSH maps in the California Current region that successfully capture smaller‐scale ocean features than AVISO, at the expense of an increase in noise.
Reconstructing Pliocene West Pacific Warm Pool Hydroclimate Using In Situ Microanalyses on Fossil Planktic Foraminifer Shells
Authors: Wycech J. , Kelly D. C. , Fournelle J. , Kitajima K. , Kozdon R. , Orland I. J.
Published: May 2020

A controversial aspect of Pliocene (5.3–2.6 Ma) climate is whether El Niño‐like (El Padre) conditions, characterized by a reduced trans‐equatorial sea‐surface temperature (SST) gradient, prevailed across the Pacific. Evidence for El Padre is chiefly based on reconstructions of sea‐surface conditions derived from the oxygen isotope (δ18O) and Mg/Ca compositions of shells belonging to the planktic foraminifer Trilobatus sacculifer. However, fossil shells of this species are a mixture of multiple carbonate phases—pre‐gametogenic, gametogenic (reproductive), and diagenetic calcites—that formed under different physiological and/or environmental conditions and are averaged in conventional whole‐shell analyses. Through in situ measurements of micrometer‐scale domains within Pliocene‐aged shells of T. sacculifer from Ocean Drilling Program Site 806 in the western equatorial Pacific, we show that the δ18O of gametogenic calcite is 0.6–0.8‰ higher than pre‐gametogenic calcite, while the Mg/Ca ratios of these two phases are the same. Both the whole‐shell and pre‐gametogenic Mg/Ca records indicate that average early Pliocene SSTs were ~1°C warmer than modern, with present‐day SSTs being established during the latest Pliocene and early Pleistocene (~3.0–2.0 Ma). The measurement of multiple calcite phases by whole‐shell δ18O analyses masks a late Pliocene to earliest Pleistocene (3.6–2.2 Ma) decrease in seawater δ18O (δ18Osw) values reconstructed from in situ pre‐gametogenic δ18O and Mg/Ca measurements. Our novel δ18Osw record indicates that sea‐surface salinities in the west Pacific warm pool were higher than modern prior to ~3.5 Ma, which is consistent with more arid conditions under an El Padre state.
Structural Analysis of the Western Afar Margin, East Africa: Evidence for Multiphase Rotational Rifting
Authors: Zwaan F. , Corti G. , Sani F. , Keir D. , Muluneh A. A. , Illsley‐Kemp F. , Papini M.
Published: May 2020

The Afar region in East Africa represents a key location to study continental breakup. We present an integrated structural analysis of the Western Afar Margin (WAM) aiming to better understand rifted margin development and the role of plate rotation during rifting. New structural information from remote sensing, fieldwork, and earthquake data sets reveals that the N‐S striking WAM is still actively deforming and is characterized by NNW‐SSE normal faulting as well as a series of marginal grabens. Seismicity distribution analysis and the first‐ever borehole‐calibrated sections of this developing passive margin show recent slip concentrated along antithetic faults. Tectonic stress parameters derived from earthquake focal mechanisms reveal different extension directions along the WAM (82°N), in Afar (66°N) and in the Main Ethiopian Rift (108°N). Fault slip analysis along the WAM yields the same extension direction. Combined with GPS data, this shows that current tectonics in Afar is dominated by the local rotation of the Danakil Block, considered to have occurred since 11 Ma. Earlier stages of Afar development (since 31–25 Ma) were most likely related to the large‐scale rotation of the Arabian plate. Various authors have proposed scenarios for the evolution of the WAM. Any complete model should consider, among other factors, the multiphase tectonic history and antithetic fault activity of the margin. The findings of this study are not only relevant for a better understanding of the WAM but also provide insights into the role of multiphase rotational extension during rifting and passive margin formation in general.
How Long Was Venus Habitable?
Authors: Wheeling Kate
Published: May 2020

Climate simulations of Venus’s history could provide insights into the habitability of Earth and of exoplanets.
Are We Seeing a New Ocean Starting to Form in Africa?
Authors: Klemetti Erik
Published: May 2020

Although shallow magma storage at Erta Ale volcano hints at a rift-to-ridge transition, the tectonic future of the Afar region is far from certain.