bluuebunny/crossref_metadata_2025_split huggingface dataset:
In vitro compressive strength and edge stability testing of directly repaired glass-ionomer cements
Authors: Zhang Jing , Braun Peter , Banerjee Avijit 
Published: December 2019

Abstract
Objective
To study the repair potential of seven commercial glass-ionomer cements (GICs) using an in vitro edge compression test model.

Materials and methods
A total of 448 normal and 192 repaired cylindrical specimens (6 × 4 mm) were produced from 6 GICs and one resin-modified GIC. Repaired samples consisted of a base aged for 1 month before repaired by an overlying layer. All samples were matured for 1 day, 1 week, 1 month or 3 months before compression, and edge tests were performed respectively on the whole surface (compressive strength, CS) or on the edge (edge stability, ES) using a universal testing machine.

Results
For normal specimens, Ketac Universal (KU) illustrated a significantly higher CS than other groups at all time points (p < 0.001). ES of KU was weaker than EQUIA Forte (EQF), FIX (Fuji IX) and RSC (Riva Self Cure) after 1 day, increasing after 1 week. Repaired specimens showed CS comparable to normal specimens (p > 0.05). Repaired KU significantly improved CS compared to repaired EQF and Fuji II (FII) after 1 day. No statistical difference was found in ES among these groups (p > 0.05).

Conclusions
KU provided the fastest maturation and greatest CS and ES in both normal and repair models after short-term ageing. Repair of GICs could potentially be achieved directly onto the fractured substrate and the subsequent improved mechanical performance could be maintained for at least 3 months.

Clinical relevance
This study provides a potential alternative in-vitro method to assess GIC restoration failure as well as provide insight into the mechanisms of GIC restoration repair.
Route reassessment by transporter ants improves speed and directional accuracy of cooperative transport in Formica japonica
Authors: Hisamoto Shumpei , Hosaka Natsumi , Matsunami Yuka , Iwasaki Hideo 
Published: December 2019

AbstractEncircling cooperative transport in ants is categorized into coordinated and uncoordinated types. Coordinated cooperative transport is considered to be advantageous for ants because it transports food quickly without creating a deadlock. Contrarily, uncoordinated transport is slow and frequently becomes deadlocked. This study assessed the characteristics of uncoordinated cooperative transport, which has scarcely been studied before, through experiments performed on Formica japonica. Based on our experiment and analysis, we report that the transport speed remains unchanged with the number of transporters. We also found that pulling transporter ants often left the food item transiently as the transport speed decreased, and then went back to the item. Upon rejoining transport, the transport speed increased. This is presumably because the ants gain navigation information during the period that they leave the food. We propose that this ‘route reassessment’ behavior is important for transport coordination and navigation in F. japonica.
Recovery of Vitis vinifera L. cv. ‘Kékfrankos’ from ‘bois noir’ disease
Authors: Mátai Anikó , Teszlák Péter , Jakab Gábor 
Published: December 2019

AbstractInvestigation of diseases caused by phytoplasmas, a group of cell-wall-less gram-positive bacteria has received significant attention in plant pathology. Grapevine is a host of two, genetically distinct phytoplasmas: Line Flavescence dorée (FD) phytoplasma associated to ‘flavescence dorée’ and ‘Candidatus Phytoplasma solani’ responsible for ‘bois noir’ (BN) disease. In the current study, we focused on BN diseased grapevines (Vitis vinifera L. cv. ‘Kékfrankos’), measured their photosynthetic performance and leaf hydrogen peroxide (H2O2) concentration. The latter is generally considered as a key molecule in the process of ‘recovery’ which is a spontaneous and unpredictable long-term remission of disease symptoms. This phenomenon also occurred during the time of our experiment. Infection resulted in reduced gas exchange performance and maximum quantum efficiency of PSII with an increased regulated non-photochemical quenching of PSII and H2O2 concentration. Changes in gas exchange seem to be a systemic response, while reduced photochemistry is a local response to ‘Ca. P. solani’ infection. H2O2 accumulation in BN phytoplasma infected plants, unlike in FD disease, was found to be a typical response to the appearance of a biotic stressor.
Solitary fibrous tumor of the trachea: a case report
Authors: Kitada Masahiro , Yasuda Shunsuke , Abe Masahiro , Yoshida Nana , Okazaki Satoshi , Ishibashi Kei 
Published: December 2019

AbstractWe experienced a surgical case of a rare primary tracheal tumor. A 77-year-old woman visited a local clinic with chief complaints of coughing, wheezing, and discomfort in the throat. Computed tomography revealed a mass measuring approximately 1.5 cm in the mediastinal trachea, extending from the membranous portion of the trachea to the esophagus. Bronchofibroscopy showed a flat, smooth-surfaced, round mass arising from the membranous portion. Surgery was performed because of the possibility of airway obstruction and suffocation. Sleeve resection of five tracheal rings was performed via median sternotomy and interrupted suture was performed using 3-0 absorbable suture material. The postoperative course was favorable and there has been no evidence of recurrence. The pathological diagnosis was solitary fibrous tumor. A primary solitary fibrous tumor of the trachea is extremely rare. Here, we report this disease with a literature review.
The nature of management frameworks
Authors: Budler Marko , Trkman Peter 
Published: December 2019

AbstractA management framework (like the Business Model Canvas or SWOT) is a combination of interlinked items that support a particular approach to a specific objective. Various management frameworks are widely used even though their origins, adoption, and value remain vague. Previous research tried to decipher the adoption of these management frameworks, whereas considerably less attention was devoted to the theoretical explanation of the development and value of the frameworks. This paper investigates the nature of management frameworks in particular realms using analogical reasoning between biological and social systems, and mostly draws on memetics, intersubjective reality, and the network effect. By using memetics, the explanations on the origins of well-known frameworks are complemented. Second, the paper shows the role of the network effect in the growing value of a framework until it becomes an intersubjective reality. Finally, such a framework is explained as autopoietic within a particular realm.
Posterior semicircular canal paroxysmal positional vertigo triggers a new type of windmill nystagmus
Authors: Comacchio F , Cutrì N , Mion M 
Published: December 2019

AbstractBackgroundPeriodic alternating nystagmus is a rare condition characterised by spontaneous horizontal nystagmus that periodically reverses direction, indicating an alteration of the velocity storage mechanism. Windmill nystagmus is a peculiar and rare variant of periodic alternating horizontal nystagmus with a superimposed periodic alternating vertical nystagmus. It is generally observed in blind patients.Case reportThis paper presents the unique case of a normally sighted patient with a windmill nystagmus triggered by an episode of benign paroxysmal positional vertigo due to bilateral posterior canalolithiasis. Videonystagmography revealed an anticlockwise up-beating nystagmus followed by a clockwise down-beating nystagmus with a cycle lasting 2 minutes, followed by a brief burst of horizontal left-beating nystagmus.ConclusionThis case report represents the first observation of a new type of windmill nystagmus, probably provoked by a malfunction of the velocity storage mechanism, gaze-stabilisation and short-adaptation networks, with a loss of cerebellar inhibition.
Small RNAs in parasitic nematodes – forms and functions
Authors: Britton Collette , Laing Roz , Devaney Eileen 
Published: December 2019

AbstractSmall RNAs are important regulators of gene expression. They were first identified in Caenorhabditis elegans, but it is now apparent that the main small RNA silencing pathways are functionally conserved across diverse organisms. Availability of genome data for an increasing number of parasitic nematodes has enabled bioinformatic identification of small RNA sequences. Expression of these in different lifecycle stages is revealed by small RNA sequencing and microarray analysis. In this review we describe what is known of the three main small RNA classes in parasitic nematodes – microRNAs (miRNAs), Piwi-interacting RNAs (piRNAs) and small interfering RNAs (siRNAs) – and their proposed functions. miRNAs regulate development in C. elegans and the temporal expression of parasitic nematode miRNAs suggest modulation of target gene levels as parasites develop within the host. miRNAs are also present in extracellular vesicles released by nematodes in vitro, and in plasma from infected hosts, suggesting potential regulation of host gene expression. Roles of piRNAs and siRNAs in suppressing target genes, including transposable elements, are also reviewed. Recent successes in RNAi-mediated gene silencing, and application of small RNA inhibitors and mimics will continue to advance understanding of small RNA functions within the parasite and at the host–parasite interface.
Care-as-usual control groups across different settings in randomized trials on psychotherapy for adult depression: a meta-analysis
Authors: Cuijpers Pim , Quero Soledad , Papola Davide , Cristea Ioana A. , Karyotaki Eirini 
Published: December 2019

AbstractBackgroundCare-as-usual (CAU) is often used as a control condition in psychotherapy research, but it may vary considerably what that entails, ranging from no treatment, to routine treatment in primary care, general medical care, perinatal care, and specialized mental health care.MethodsWe conducted a meta-analysis of trials comparing psychotherapy for depression to CAU, with a focus on the different categories of CAU and countries where the studies were conducted. We used an existing database of randomized trials on psychotherapy for depression that is updated every year.ResultsA total of 140 studies with 15 419 patients were included. We found no significant differences in effects between categories of CAU (effect sizes ranging from g = 0.43 for CAU in primary care to g = 0.73 for no treatment), but heterogeneity was high in all CAU categories. After stratifying effects across specific countries (within CAU categories) we found that heterogeneity was considerably lower and there were several significant differences between countries. Overall, effects were larger in non-Western countries (g = 0.84 to 1.28) compared to those in Western countries (g = 0.52; p for difference = 0.002). Effects were smaller in studies with risk of bias (p = 0.01).ConclusionsThere are no significant differences between major categories of CAU when compared to psychotherapy conditions in randomized trials. However, effects of psychotherapy differ considerably across CAU conditions in specific countries. CAU therefore is a heterogeneous control condition in psychotherapy research.
Multi-Agent Tracking of Non-Holonomic Mobile Robots via Non-Singular Terminal Sliding Mode Control
Authors: Yousuf Bilal M. , Khan Abdul Saboor , Noor Aqib 
Published: December 2019

SUMMARYThis paper deals with the problem of the formation control of nonholonomic mobile robots in the leader–follower scenario without considering the leader information, as a result of its velocity and position. The kinematic model is reformulated as a formation model by incorporating the model uncertainties and external disturbance. The controller is presented in the two-step process. Firstly, the tracking problem is taken into consideration, which can be used as a platform to design a controller for the multi-agents. The proposed controller is designed based on a non-singular fast terminal sliding mode controller (FTSMC), which drives the tracking error to zero in finite time. It not only ensures the tracking but also handles the problem related to non-singularities. Moreover, the design control scheme is modified using high-gain observer to resolve the undefined fluctuations due to man-made errors in sensors. Secondly, the multi-agent tracking problem is considered; hence, a novel formation control is designed using FTSMC, which ensures the formation pattern as well as tracking. Furthermore, the obstacle avoidance algorithm is incorporated to avoid the collision, inside the region of interest. With the Lyapunov analysis, the stability of the proposed algorithm is verified. As a result, simulated graphs are shown to prove the efficacy of the proposed control scheme.
ENTROPY FLOW AND DE BRUIJN'S IDENTITY FOR A CLASS OF STOCHASTIC DIFFERENTIAL EQUATIONS DRIVEN BY FRACTIONAL BROWNIAN MOTION
Authors: Choi Michael C.H. , Lee Chihoon , Song Jian 
Published: December 2019

AbstractMotivated by the classical De Bruijn's identity for the additive Gaussian noise channel, in this paper we consider a generalized setting where the channel is modelled via stochastic differential equations driven by fractional Brownian motion with Hurst parameter H ∈ (0, 1). We derive generalized De Bruijn's identity for Shannon entropy and Kullback–Leibler divergence by means of Itô's formula, and present two applications. In the first application we demonstrate its equivalence with Stein's identity for Gaussian distributions, while in the second application, we show that for H ∈ (0, 1/2], the entropy power is concave in time while for H ∈ (1/2, 1) it is convex in time when the initial distribution is Gaussian. Compared with the classical case of H = 1/2, the time parameter plays an interesting and significant role in the analysis of these quantities.
Myocardial function in late preterm infants during the transitional period: comprehensive appraisal with deformation mechanics and non-invasive cardiac output monitoring
Authors: Cappelleri Alessia , Bussmann Neidin , Harvey Susan , Levy Phillip T. , Franklin Orla , EL-Khuffash Afif 
Published: December 2019

AbstractBackground:There is a paucity of functional data on mid-to-late preterm infants between 30+0 and 34+6 weeks gestation. We aimed to characterise transitional cardiopulmonary and haemodynamic changes during the first 48 hours in asymptomatic mid-to-late preterm infants.Methods:Forty-five healthy preterm newborns (mean ± standard deviation) gestation of 32.7 ± 1.2 weeks) underwent echocardiography on Days 1 and 2. Ventricular mechanics were assessed by speckle tracking-derived deformation, rotational mechanics, tissue Doppler imaging, and right ventricle-focused measures (tricuspid annular plane systolic excursion, fractional area change). Continuous haemodynamics were assessed using the NICOM™ system to obtain left ventricular output, stroke volume, heart rate, and total peripheral resistance by non-invasive cardiac output monitoring.Results:Right ventricular function increased (all measures p < 0.005) with mostly stable left ventricular performance between Day 1 and Day 2. NICOM-derived left ventricular output [mean 34%, 95% confidence interval 21–47%] and stroke volume [29%, 16–42%] increased with no change in heart rate [5%, −2 to 12%]. There was a rise in mean blood pressure [11%, 1–21%], but a decline in total peripheral resistance [−14%, −25 to −3%].Conclusion:Left ventricular mechanics remained persevered in mid-to-late premature infants, but right ventricular function increased. Non-invasive cardiac output monitoring is feasible in preterm infants with an increase in left ventricular output driven by an improvement in stroke volume during the transitional period.
Best Practices for Normalizing Parents in the Academy: Higher- and Lower-Order Processes and Women and Parents’ Success
Authors: Windsor Leah C. , Crawford Kerry F. 
Published: December 2019

ABSTRACTOur research on bias in family formation is rooted in the extant literature of gender and academia but moves beyond discussion of the “leaky-pipeline” metaphor to explore less frequently addressed issues including pregnancy loss, illness, lactation, and challenges faced by academic parents who are the partners of those who have given birth. We explore the lower-order processes that inform the gap in professional achievement between men and women in political science specifically and in academia more broadly. In turn, these lower-order processes manifest as more observable higher-order outcomes such as the disparate rates of tenure and promotion. We conducted a 100-question survey from November 2017 through July 2019 involving more than 300 respondents. Through analysis of open-ended survey responses, we identified a common theme uniting faculty experiences at a range of universities: family formation and parenting can be isolating processes for academics, and there often is a gross lack of both formal and informal support within universities, which creates the potential for setbacks in both personal and professional life. We highlight the challenges confronting academic parents—especially women—and suggest potential avenues to a more inclusive and balanced approach to academia.
HOW DOES INTERRACIAL CONTACT AMONG THE U.S.-BORN SHAPE WHITE AND BLACK RECEPTIVITY TOWARD IMMIGRANTS?
Authors: Marrow Helen B. , Tropp Linda R. , van der Linden Meta , Okamoto Dina G. , Jones-Correa Michael 
Published: December 2019

AbstractA notable increase in immigration into the United States over the past half century, coupled with its recent geographic dispersion into new communities nationwide, has fueled contact among a wider set of individuals and groups than ever before. Past research has helped us understand Whites’ and Blacks’ attitudes toward immigrants and immigration, and even how contact between Blacks and Whites have shaped their attitudes toward one another. Nevertheless, how contact between Blacks and Whites may correspond with attitudes toward immigrants is not as well understood. Drawing on an original representative survey, we examine U.S.-born Whites’ and Blacks’ attitudes toward Mexican and South Asian Indian immigrants within the context of ongoing relations between the former two U.S.-born communities. Informed by research on the secondary transfer effect (STE), we model how the frequency of contact between U.S.-born Whites and Blacks predicts each group’s receptivity toward two differentially positioned immigrant groups, first-generation Mexicans and South Asian Indians. Multivariate analysis indicates that, among Whites, more frequent contact with Blacks is positively associated with greater receptivity toward both immigrant outgroups, even after controlling for Whites’ individual perceptions of threat, their direct contact with the two immigrant groups, and the perceived quality of such contact. Among Blacks, however, we find less consistent evidence that frequent contact with Whites is associated with attitudes toward either immigrant group. While varied literatures across multiple disciplines have suggested that interracial relations among the U.S.-born may be associated with receptivity toward immigrant newcomers, our results uniquely highlight the importance of considering how U.S.-born groups are positioned in relation to immigrants and to each other when examining such effects.
Political finance regimes and party system size: evidence from new and established European democracies
Authors: Rashkova Ekaterina R. , Su Yen-Pin 
Published: December 2019

AbstractStudies of party system size have looked at institutional and sociological factors in their attempt to explain what determines the number of parties. While some recent studies contend that party laws, beyond the district magnitude, have a significant impact on, among others, new party entry, we know very little about whether certain rules matter more in some societies than they do in others. In this paper, we study the extent to which various party finance rules affect party system size and differentiate the effect between new and established democracies. Specifically, we focus on direct and indirect public subsidization and limits on private donation and campaign expenditure. We hypothesize that compared to established countries, new democracies tend to have a larger party system size when the political finance rules create more equal conditions for electoral competition. Using data from 43 Europe democracies, the empirical analyses support our hypothesis.
Sliding Relations for Glacier Slip With Cavities Over Three‐Dimensional Beds
Authors: Helanow Christian , Iverson Neal R. , Zoet Lucas K. , Gagliardini Olivier 
Published: December 2019

AbstractResults of glacier flow models and associated estimates of future sea level rise depend sensitively on the prescribed relation between shear stress and slip velocity at the glacier bed. Using a fully three‐dimensional numerical model of ice flow, we compute steady‐state sliding relations for where ice slips over a rock bed with three‐dimensional, periodic topography. In agreement with studies of two‐dimensional beds, water‐filled cavities that form down‐glacier from bedforms cause basal shear stress to peak at a threshold slip velocity and decrease at higher velocities (i.e., rate‐weakening drag). However, the shear stress magnitude and extent of rate‐weakening drag depend systematically on lateral topographic variations not considered previously. Moreover, steep up‐glacier‐facing slopes of bedforms can result in shear stress that increases monotonically over a wide range of slip velocity, helping to stabilize slip. These results highlight the potential variability of sliding relations and their likely sensitivity to the morphological diversity of glacier beds.
Compressional Ridges on Baret Montes, Pluto as Observed by New Horizons
Authors: Ahrens C.J. , Chevrier V.F. 
Published: December 2019

AbstractDistinct compressional folding patterns may be an important aspect in shaping icy body surfaces in the outer Solar System and revealing their folding processes and stress histories. Baret Montes on Sputnik Planitia is possibly one of the most folded structures yet observed on Pluto. This glacier consists of subparallel ridges that display a consistent northwest‐southeast orientation and is comparable to Enceladan transpression fold processes. Here we report on mapping using images from NASA's New Horizons mission and apply ridge analysis to determine the folding characteristics and approximate the deformation duration of the folds. This leads to a discussion of the ridge formation mechanism and the possible influence of Sputnik Planitia's underlying convection. Based on the occurrence of the ridges on a water ice based glacier with a thinner layer of methane‐water ice, we conclude that the deformation rates calculated in this study imply the folding duration to be <5.53 My.