bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Unified Model and Algorithms for Temporal Map Labeling
Authors: Gemsa Andreas , Niedermann Benjamin , Nöllenburg Martin 
Published: April 2020

AbstractWe consider map labeling for the case that a map undergoes a sequence of operations such as rotation, zoom and translation over a specified time span. We unify and generalize several previous models for dynamic map labeling into one versatile and flexible model. In contrast to previous research, we completely abstract from the particular operations and express the labeling problem as a set of time intervals representing the labels’ presences, activities and conflicts. One of the model’s strength is manifested in its simplicity and broad range of applications. In particular, it supports label selection both for map features with fixed position as well as for moving entities (e.g., for tracking vehicles in logistics or air traffic control). We study the active range maximization problem in this model. We prove that the problem is -complete and [1]-hard, and present constant-factor approximation algorithms. In the restricted, yet practically relevant case that no more than k labels can be active at any time, we give polynomial-time algorithms as well as constant-factor approximation algorithms.
Heterogeneous effects of graduates’ international mobility on employers’ hiring intentions—experimental evidence from Germany
Authors: Petzold Knut 
Published: April 2020

AbstractInternational student mobility (ISM) is considered increasingly important for professional careers. Referring to theories of human capital and job market signalling, we assume that different forms of ISM experience can serve as signals for general, specific and transnational human capital. To test this idea, we use a factorial survey experiment to investigate the weights HR managers of German employers allocate to ISM experience in hiring decisions, both generally and conditionally to other characteristics of the application. A screening situation was simulated by randomly presenting hypothetical applicants, thereby systematically varying ISM experience (no experience, private sojourn, studying abroad, internship abroad) and other graduates’ characteristics ascribed and achieved. In contrast to the usual graduate and employer surveys, the experimental approach allows us to investigate employers’ evaluations directly while capturing problems of endogeneity. Results show that while an internship abroad is more rewarded by employers than studying abroad or a private sojourn, good grades and occupation-specific professional experience are still the most important. Though the effects of ISM experience are partly independent of those of other characteristics, graduates with migration background and those with a master’s degree benefit less from ISM experience. Moreover, ISM experience is more rewarded by employers who operate in international contexts. Overall, the analysis uncovers a heterogeneous signalling power of ISM experience, conditional to different types of human capital and to characteristics of applicants and employers.
Kappa coefficients for dichotomous-nominal classifications
Authors: Warrens Matthijs J. 
Published: April 2020

AbstractTwo types of nominal classifications are distinguished, namely regular nominal classifications and dichotomous-nominal classifications. The first type does not include an ‘absence’ category (for example, no disorder), whereas the second type does include an ‘absence’ category. Cohen’s unweighted kappa can be used to quantify agreement between two regular nominal classifications with the same categories, but there are no coefficients for assessing agreement between two dichotomous-nominal classifications. Kappa coefficients for dichotomous-nominal classifications with identical categories are defined. All coefficients proposed belong to a one-parameter family. It is studied how the coefficients for dichotomous-nominal classifications are related and if the values of the coefficients depend on the number of categories. It turns out that the values of the new kappa coefficients can be strictly ordered in precisely two ways. The orderings suggest that the new coefficients are measuring the same thing, but to a different extent. If one accepts the use of magnitude guidelines, it is recommended to use stricter criteria for the new coefficients that tend to produce higher values.
Cardiotoxicities of 5-Fluorouracil and Other Fluoropyrimidines
Authors: Shiga Taro , Hiraide Makoto 
Published: April 2020

Opinion statementFluoropyrimidine (FP) is used to treat a wide range of cancers; however, it is associated with drug-induced vascular toxicity, as well as angina pectoris and coronary spasm. FP has been administered for many years, although the incidence, mechanisms, and appropriate methods for managing its associated cardiovascular toxicities have not been clarified, and the management of these complications has not been standardized. This lack of evidence is not limited to FP. Many trials of anticancer agents have been conducted, excluding patients with heart diseases. Hence, there is a paucity of epidemiological data on cardiovascular adverse events caused by anticancer agents. There have been remarkable improvements in cancer treatment in recent years, with consequent improvements in prognosis. In this context, new cardiovascular toxicities related to new drugs have emerged. We are now compelled to respond to cardiovascular adverse events despite the lack of evidence regarding optimal management. The result has been establishment and rapid maturation of the new academic field of cardio-oncology. Despite the relative lack of evidence, we must review small pieces of evidence that have accumulated to date and make the utmost efforts to provide patients with effective evidence-based medical care. Simultaneously, we urgently need randomized clinical trials to build strong evidence.
Paley–Wiener properties for spaces of entire functions
Authors: Nabizadeh Elmira , Pfeuffer Christine , Toft Joachim 
Published: April 2020

AbstractWe deduce Paley–Wiener results in the Bargmann setting. At the same time we deduce characterisations of Pilipović spaces of low orders. In particular we improve the characterisation of the Gröchenig test function space $$\mathcal {H}_{\flat _1}=\mathcal {S}_C$$

H

♭
1

=

S
C

, deduced in Toft (J Pseudo-Differ Oper Appl 8:83–139, 2017).
Combined quantitative microscopy on the microstructure and phase evolution in Li1.3Al0.3Ti1.7(PO4)3 ceramics
Authors: Gunduz Deniz Cihan , Schierholz Roland , Yu Shicheng , Tempel Hermann , Kungl Hans , Eichel Rüdiger-A. 
Published: April 2020

AbstractLithium aluminum titanium phosphate (LATP) is one of the materials under consideration as an electrolyte in future all-solid-state lithium-ion batteries. In ceramic processing, the presence of secondary phases and porosity play an important role. In a presence of more than one secondary phase and pores, image analysis must tackle the difficulties about distinguishing between these microstructural features. In this study, we study the phase evolution of LATP ceramics sintered at temperatures between 950 and 1100 °C by image segmentation based on energy-dispersive X-ray spectroscopy (EDS) elemental maps combined with quantitative analysis of LATP grains. We found aluminum phosphate (AlPO4) and another phosphate phase ((Lix)PyOz). The amount of these phases changes with sintering temperature. First, since the grains act as an aluminum source for AlPO4 formation, the aluminum content in the LATP grains decreases. Second, the amount of secondary phase changes from more (Lix)PyOz at 950 °C to mainly AlPO4 at 1100 °C sintering temperature. We also used scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM) to study the evolution of the LATP grains and AlPO4, and LATP grain size increases with sintering temperature. In addition, transmission electron microscopy (TEM) was used for the determination of grain boundary width and to identify the amorphous structure of AlPO4.
Fabrication, microstructure, and properties of SiC/Al4SiC4 multiphase ceramics via an in-situ formed liquid phase sintering
Authors: Liu Junwen , Zhou Xiaobing , Tatarko Peter , Yuan Qin , Zhang Lan , Wang Hongjie , Huang Zhengren , Huang Qing 
Published: April 2020

AbstractThe SiC/Al4SiC4 composites with the improved mechanical properties and thermal conductivity were fabricated by the in-situ reaction of polycarbosilane (PCS) and Al powders using spark plasma sintering. The addition of 5 wt% yttrium (Y) sintering additive was useful to obtain fully dense samples after sintering at a relatively low temperature of 1650 °C, due to the formation of a liquid phase during sintering. The average particle size of the in-situ formed SiC was ~300 nm. The fracture toughness (4.9 MP·m1/2), Vickers hardness (16.3 GPa), and thermal conductivity (15.8 W/(m·K)) of the SiC/Al4SiC4 composite sintered at 1650 °C were significantly higher than the hardness (13.2 GPa), fracture toughness (2.16 MPa·m1/2), and thermal conductivity (7.8 W/(m·K)) of the monolithic Al4SiC4 ceramics. The improved mechanical and thermal properties of the composites were attributed to the high density, fine grain size, as well as the optimized grain boundary structure of the SiC/Al4SiC4 composites.
Enhanced dielectric and electrocaloric properties in lead-free rod-like BCZT ceramics
Authors: Hanani Zouhair , Merselmiz Soukaina , Danine Abdelaadim , Stein Nicolas , Mezzane Daoud , Amjoud M’barek , Lahcini Mohammed , Gagou Yaovi , Spreitzer Matjaz , Vengust Damjan , Kutnjak Zdravko , El Marssi Mimoun , Luk’yanchuk Igor A. , Gouné Mohamed 
Published: April 2020

AbstractBa0.85Ca0.15Zr0.10Ti0.90O3 (BCZT) lead-free ceramics demonstrated excellent dielectric, ferroelectric, and piezoelectric properties at the morphotropic phase boundary (MPB). So far, to study the effect of morphological changes on dielectric and ferroelectric properties in lead-free BCZT ceramics, researchers have mostly focused on the influence of spherical grain shape change. In this study, BCZT ceramics with rod-like grains and aspect ratio of about 10 were synthesized by surfactant-assisted solvothermal route. X-ray diffraction (XRD) and selected area electron diffraction (SAED) performed at room temperature confirm the crystallization of pure perovskite with tetragonal symmetry. Scanning electron microscopy (SEM) image showed that BCZT ceramics have kept the 1D rod-like grains with an average aspect ratio of about 4. Rod-like BCZT ceramics exhibit enhanced dielectric ferroelectric (ɛr = 11,906, tanδ = 0.014, Pr = 6.01 μgC/cm2, and Ec = 2.46 kV/cm), and electrocaloric properties (ΔT = 0.492 K and gZ = 0.289 (K·mm)/kV at 17 kV/cm) with respect to spherical BCZT ceramics. Therefore, rod-like BCZT lead-free ceramics have good potential to be used in solid-state refrigeration technology.
Saudi pediatric residents' confidence in handling ethical situations and factors influencing it
Authors: Al Qadrah Bedoor H. , Al-Saleh Abdullah M. , Al-Sayyari Abdulla 
Published: April 2020

Background:
During their residency program, pediatric residents frequently face ethical challenges. The aim of the study is to evaluate the pediatric residents' knowledge and confidence to handle common ethical dilemmas during their training.

Methods:
This is a survey-based cross-sectional study on all pediatric residents in the largest pediatric training center in Saudi Arabia. The survey had six sections: a) Demographics and self-assessment of religiosity, b) Sources of ethics education, c) Degree of confidence in dealing with ethical challenges in clinical practice, d) Rating of the quality of ethics education during residency, e) Agreement or disagreement regarding ten ethical scenarios, and f) Confidence level in handling 21 different ethical situations.
The response to the survey questions was based on a Likert scale; the survey was electronically distributed to all pediatrics residents. Mean knowledge scores and 95% confidence intervals (CI) were calculated for each independent variable to test for associations. Comparisons were made using an independent t-test or an ANOVA test when there were more than two groups.

Result:
Eighty residents responded to the study (85.1% response rate). Over 60% reported that the best source of ethical education for them was through discussions with a senior physician and it was through formal lecturers in 13.8%. One-fifth felt confident in dealing with ethical challenges. Only 2.5% rated the ethics education as “very good/excellent” and 12.5% rated the “support from residency program for ethics education” as being “very good/excellent.” Agreement of more than 80% was only noted for 4 of 10 of the ethical scenarios. Overall, only 16.4% felt “confident/extremely confident” in handling different ethical situations while 38.5% felt “not confident/a little confident” with more confidence among male residents (35.3% versus 18.7% p = 0.01). Marital status, year of residency, religiosity, and source of ethics knowledge had no impact on the level of confidence.

Conclusion:
Overall, the ethics education was considered inadequate. Only one fifth had the confidence in dealing with ethical situations. Gender but not marital status, year of residency, religiosity, or source of ethics knowledge had an impact on the level of confidence in handling ethical situations.
Adaptation of the National Plan for the Prevention and Fight Against Pandemic Influenza to the 2020 COVID-19 Epidemic in France
Authors: Ghanchi Ali 
Published: April 2020

ABSTRACTOn Tuesday, March 17, 2020, at noon, France became the third European country to impose a nationwide containment policy in the fight against epidemic coronavirus disease 2019 (COVID-19) viral infection. Announcing that the country was at “war,” President Macron called upon all to play a role in mitigating against further development of contagion. This extreme measure never seen before during peace time was the result of adapting not only the French Pandemic Influenza Plan (PIP) being applied to the national context but also real-time clinical, epidemiological, and scientific information about the evolution of COVID-19 infection in the country. The situation was further complicated by local municipal elections and political agendas by populist opinions. Despite mass communication about the importance of individual behavioral attitudes to counter disease propagation, few heeded government advice. Consequently, the situation rapidly deteriorated with increasing number of cases that started to overwhelm health services. As a result, decisive and immediate action was taken by the State for the national public health interest. This report from the field details the timely events that contributed to this extreme policy decision taken by France. A policy decision that other Western democracies have since applied as the pandemic disseminated across the globe.
ANNIHILATOR-STABILITY AND TWO QUESTIONS OF NICHOLSON
Authors: XIA GUOLI , ZHOU YIQIANG 
Published: April 2020

AbstractAn element a in a ring R is left annihilator-stable (or left AS) if, whenever
$Ra+{\rm l}(b)=R$
with
$b\in R$
,
$a-u\in {\rm l}(b)$
for a unit u in R, and the ring R is a left AS ring if each of its elements is left AS. In this paper, we show that the left AS elements in a ring form a multiplicatively closed set, giving an affirmative answer to a question of Nicholson [J. Pure Appl. Alg.221 (2017), 2557–2572.]. This result is used to obtain a necessary and sufficient condition for a formal triangular matrix ring to be left AS. As an application, we provide examples of left AS rings R over which the triangular matrix rings
${\mathbb T}_n(R)$
are not left AS for all
$n\ge 2$
. These examples give a negative answer to another question of Nicholson [J. Pure Appl. Alg.221 (2017), 2557–2572.] whether R/J(R) being left AS implies that R is left AS.
Alterations in neural circuits underlying emotion regulation following child maltreatment: a mechanism underlying trauma-related psychopathology
Authors: Jenness Jessica L. , Peverill Matthew , Miller Adam Bryant , Heleniak Charlotte , Robertson Madeline M. , Sambrook Kelly A. , Sheridan Margaret A. , McLaughlin Katie A. 
Published: April 2020

AbstractBackgroundDisruptions in neural circuits underlying emotion regulation (ER) may be a mechanism linking child maltreatment with psychopathology. We examined the associations of maltreatment with neural responses during passive viewing of negative emotional stimuli and attempts to modulate emotional responses. We investigated whether the influence of maltreatment on neural activation during ER differed across development and whether alterations in brain function mediated the association between maltreatment and a latent general psychopathology (‘p’) factor.MethodsYouth aged 8–16 years with (n = 79) and without (n = 72) exposure to maltreatment completed an ER task assessing neural responses during passive viewing of negative and neutral images and effortful attempts to regulate emotional responses to negative stimuli. P-factor scores were defined by a bi-factor model encompassing internalizing and externalizing psychopathology.ResultsMaltreated youth had greater activation in left amygdala and salience processing regions and reduced activation in multiple regions involved in cognitive control (bilateral superior frontal gyrus, middle frontal gyrus, and dorsal anterior cingulate cortex) when viewing negative v. neutral images than youth without maltreatment exposure. Reduced neural recruitment in cognitive control regions mediated the association of maltreatment with p-factor in whole-brain analysis. Maltreated youth exhibited increasing recruitment with age in ventrolateral prefrontal cortex during reappraisal while control participants exhibited decreasing recruitment with age. Findings were similar after adjusting for co-occurring neglect.ConclusionsChild maltreatment influences the development of regions associated with salience processing and cognitive control during ER in ways that contribute to psychopathology.
ELICITED IMITATION: A TEST FOR ALL LEARNERS?
Authors: Deygers Bart 
Published: April 2020

AbstractElicited imitation (EI) is a much-used measurement instrument in applied linguistics, and it is considered a reliable and quick assessment of holistic speaking ability and implicit grammar knowledge. To date, however, EI research has overwhelmingly relied on highly educated participants. Only a few small-scale EI studies in applied linguistics have considered low-literate learners. Using Item Response Theory (IRT) and inferential parametric and nonparametric statistics, this study examined the EI performance of 113 L2 learners of Dutch with diverging educational backgrounds. All participants were enrolled in A1 and A2 Dutch L2 courses. Additionally, this study examined to what extent EI performances align with standardized tests of speaking and receptive vocabulary. The results indicate that EI can be used with both highly literate and low-educated participants, who will—however—be outperformed by higher educated learners. Especially the repetition of sentences containing pseudowords appears to result in substantial performance differences between the two groups.
‘Flying High in a Plane’ Appellate Body Report, European Communities and Certain Member States – Measures Affecting Trade in Large Civil Aircraft
Authors: Crivelli Pramila , Rubini Luca 
Published: April 2020

AbstractThis article reviews the Appellate Body decision in the implementation phase of the EC–Aircraft dispute. Focusing on some of the key findings, we assess whether they are legally and economically correct. We conclude that (a) though still unclear, the test for establishing de facto contingency on import substitution subsidies is probably too demanding; (b) though legitimate, the interpretation of the remedy of removal of the adverse effects for actionable subsidies is the weakest and most deferential possible; (c) the hesitation in confirming that quantitative methods are the key tool to define the relevant market is unwelcome; and (d) the Appellate Body correctly recognize the importance for Panels to consider, in the context of the serious prejudice analysis, whether the like product of the complainant has been subsidized. Most importantly, the analysis of this case, set within the broader jurisprudence and practice, has led us to conclude that WTO subsidy disciplines are not particularly strong. The review of the main economic theories justifying subsidy control (strategic trade policy, terms of trade, private information, commitment theory) has shown that no single theory is able to fully account for subsidies and the need to control them. The key question is the definition of what we want to achieve by controlling subsidies, which is the main message sent to the policy-makers and negotiators that are currently considering law reform.
Indonesia – Safeguard on Certain Iron or Steel Products
Authors: Prusa Thomas J. , Vermulst Edwin A. 
Published: April 2020

AbstractIn July 2014, Indonesia implemented a safeguard tariff on galvalume, a type of galvanized flat-rolled steel. Chinese Taipei and Viet Nam challenged the measure, mainly claiming that Indonesia's administering authority failed to satisfy various substantive and procedural requirements of the GATT 1994 and the Safeguards Agreement. The Panel and AB found that the tariff was not a safeguard measure but rather was a simple increase in Indonesia's applied rate. Interestingly, Viet Nam, the largest import supplier, is a member of a free trade area with Indonesia, meaning Viet Nam is not subject to the MFN rate. Viet Nam's preferential tariff treatment likely influenced Indonesia's decision to claim the action was a safeguard. Ironically, even though the Appellate Body essentially rejected its claims, the ruling benefits Viet Nam.
Molecular gas filamentary structures in galaxy clusters
Authors: Combes Francoise 
Published: April 2020

AbstractRecent molecular line observations with ALMA and NOEMA in several Brightest Cluster Galaxies (BCG) have revealed the large-scale filamentary structure at the center of cool core clusters. These filaments extend over 20-100kpc, they are tightly correlated with ionized gas (Hα, [NII]) emission, and have characteristic shapes: either radial and straight, or also showing a U-turn, like a horse-shoe structure. The kinematics is quite regular and laminar, and the derived infall time is much longer than the free-fall time. The filaments extend up to the radius where the cooling time becomes larger than the infall time. Filaments can be perturbed by the sloshing of the BCG in its cluster, and spectacular cooling wakes have been observed. Filaments tend to occur at the border of cavities driven in the X-ray gas by the AGN radio jets. Observations of cool core clusters support the thermal instability scenario, which accounts for the multiphase medium in the upper atmospheres of BCG, where the right balance between heating and cooling is reached, and a chaotic cold gas accretion occurs. Molecular filaments are also seen associated to ram-pressure stripped spiral galaxies in rich galaxy clusters, and in jet-induced star formation, suggesting a very efficient molecular cloud formation even in hostile cluster environments.
AGN Jets, Bubbles, and Heat Pumps
Authors: Chen Yi-Hao , Heinz Sebastian 
Published: April 2020

AbstractRadio-mode feedback from relativistic jets is one of the prominent heating mechanisms in clusters of galaxies. We present a long-term evolution of high-resolution MHD simulation of jets interacting with an environment modeled to represent the Perseus cluster. We investigate the thermodynamics of the ICM due to the gas motion triggered by the action of the jets and show that low-entropy gas is lifted efficiently in the wake of the inflating radio lobe. We look into the uplift mechanism and estimate the energy budget and the rate of thermal conduction. The redistribution of entropy suggests that heat conduction can play a more significant role in the thermal evolution of the cluster core in the presence of jets, which act effectively as a heat pump, thus heating the ICM more efficiently than jets would by themselves in an isentropic cluster.