bluuebunny/crossref_metadata_2025_split huggingface dataset:
Simulation of slot-coating of nanocellulosic material subject to a wall-stress dependent slip-velocity at die-walls
Authors: Fuaad P. A. , Swerin Agne , Lundell Fredrik , Toivakka Martti 
Published: September 2021

AbstractBio-based nanocellulosic materials are non-toxic, renewable, exhibit excellent barrier properties, and are suitable candidates for sustainable food packaging applications. Sizing and designing coating parameters for slot-coating process using nanocellulose suspensions is challenging due to complex shear-thinning rheology and the presence of a water-rich boundary layer, effecting significant apparent slip at the wall. Previous studies have shown that the flow inside the coating bead can be complex, with occasional stagnation regions and a rheological model incorporating yield stress which should be considered while analyzing slot coating of nanocellulosic flows. This work extends earlier investigations by including the effects of the particle depleted water-rich boundary layer. The suspension is modeled as a Casson fluid with a shear-thinning viscosity, and the particle depletion at the wall is represented by an infinitely thin layer modeled as a local shear-dependent nonlinear slip law. The resulting two-phase flow equations are solved using a Finite Volume Method (FVM) coupled with the Volume of Fluid (VoF) method for tracking the free surface interface. It is observed that slip alters the flow’s dynamics in the coating bead, and the effect of slip cannot be ignored, especially at high shear rates. For thin films, the presence of slip enhances the flow, leading to more material coated on the substrate. In contrast, for thicker coatings, apparent slip leads to an augmentation in stagnant, non-yielded regions, potentially generating uneven surfaces.
Are Crab-collectors in Mangroves of Northern Brazil (PA) Optimal Foragers?
Authors: Albrecht Ole Thies , Glaser Marion , Zimmer Martin 
Published: September 2021

AbstractIntensive harvesting of the mangrove crab Ucides cordatus provides subsistence for food and main or additional income to many inhabitants of mangrove areas in Northern Brazil. In order to better understand the spatial patterns of use of this natural resource as basis for sustainable resource-management, we used a combination of GPS-tracking, field observations, semi-structured interviews and participatory mapping with crab-collectors. We quantified daily working hours, traveling distance and time to, as well as collecting time inside, the patches where crabs are collected. Based on preliminary findings for three different types of transportation to the fishing grounds, we conclude that crab-collectors in our study area act in accordance with the central place optimal foraging concept in that they invest more time in traveling to areas with higher catch. We hold these findings will prove relevant for sustainably managing the use of mangrove crabs as natural resource. The parallel occurrence of different collecting-behaviours possibly releases pressure from crab stocks in the potentially depleting fishing grounds adjacent to villages, and thus, may render crab-collecting in these areas more sustainable. Detailed studies are needed to quantify the catch from different mangrove areas and to make these data useful for the sustainable management of natural resource-exploitation in mangroves.
Application of high frequency mechanical impact treatment to improve the fatigue strength of corroding welded joints
Authors: Weinert J. , Gkatzogiannis S. , Engelhardt I. , Knoedel P. , Ummenhofer T. 
Published: September 2021

AbstractThis study deals with the fatigue strength of high-frequency mechanical impact (HFMI)-treated unprotected structural details made of mild steel S355 considering the influence of corrosive environmental conditions. The investigations are carried out on butt welded specimens with sheet thickness t = 15 mm and on transverse non-load-carrying attachment specimens with sheet thickness t = 25 mm. Two different methods were applied for the simulation of marine corrosive environment in the laboratory. Specimens first were deposited in a salt spray chamber and then tested subsequently dry at laboratory-air conditions considering the influence of corrosion on the crack initiation. Alternatively, and to cover the effects of corrosion on the crack growth, artificial seawater was used for pre-corrosion, and after a defined timespan, fatigue tests were performed simultaneously with the specimen resting in the corrosive medium. The corrosion fatigue tests were performed in as-welded and HFMI-treated conditions at a stress ratio R = 0.1 under axial tensile and 4-point bending cyclic loading. The test results are evaluated to determine the characteristic fatigue strengths for fixed slopes m = 3 and m = 5 according to IIW recommendations for the as-welded and for the HFMI-treated condition respectively. The results of the experimental investigations based on the nominal stress approach show that the fatigue strength of both specimen types could be significantly increased by the application of HFMI treatment compared to the corresponding specimens in the as-welded condition even if exposed to the investigated corrosive conditions. The comparison with the design proposals of IIW shows that for HFMI-treated butt welds, no reduction of the FAT class due to corrosion is required and the recommended FAT class is still valid. The results for the HFMI-treated transverse attachments are slightly below the design curve recommended by IIW and a proposal to consider corrosion is derived for this case. Additional numerical investigations by applying the effective notch stress (ENS) approach are performed to determine notch stress curves. It was found that for the corroded specimens in the as-welded condition, the FAT class according to IIW could not be reached and adjustments of the existing rules are necessary to consider corrosion effects. However, it can be concluded that the effective notch fatigue resistance recommended by IIW is still applicable in the case of corroded HFMI-treated structural details.
Tragic Flaws
Authors: BALLANTYNE NATHAN 
Published: September 2021

AbstractIn many tragic plays, the protagonist is brought down by a disaster that is a consequence of the protagonist's own error, his or her hamartia, the tragic flaw. Tragic flaws are disconcerting to the audience because they are not known or fully recognized by the protagonist—at least not until it is too late. In this essay, I take tragic flaws to be unreliable belief-forming dispositions that are unrecognized by us in some sense. I describe some different types of flaws and consider what we might do about them. Then I examine three types of policies for managing our tragic flaws: doxastic, dispositional, and methodological.
Free electron lasers driven by plasma accelerators: status and near-term prospects
Authors: Emma C. , Van Tilborg J. , Assmann R. , Barber S. , Cianchi A. , Corde S. , Couprie M. E. , D’Arcy R. , Ferrario M. , Habib A. F. , Hidding B. , Hogan M. J. , Schroeder C. B. , Marinelli A. , Labat M. , Li R. , Liu J. , Loulergue A. , Osterhoff J. , Maier A. R. , McNeil B. W. J. , Wang W. 
Published: September 2021

AbstractOwing to their ultra-high accelerating gradients, combined with injection inside micrometer-scale accelerating wakefield buckets, plasma-based accelerators hold great potential to drive a new generation of free-electron lasers (FELs). Indeed, the first demonstration of plasma-driven FEL gain was reported recently, representing a major milestone for the field. Several groups around the world are pursuing these novel light sources, with methodology varying in the use of wakefield driver (laser-driven or beam-driven), plasma structure, phase-space manipulation, beamline design, and undulator technology, among others. This paper presents our best attempt to provide a comprehensive overview of the global community efforts towards plasma-based FEL research and development.
Healthcare worker mental models of patient care tasks in the context of infection prevention and control
Authors: Mumma Joel M. , Howard-Anderson Jessica R. , Morgan Jill S. , Schink Kevin , Wheatley Marisa J. , Kraft Colleen S. , Lane Morgan A. , Kaufman Noah H. , Ayeni Oluwateniola , Brownsword Erik A. , Jacob Jesse T. 
Published: September 2021

AbstractObjective:Understanding the cognitive determinants of healthcare worker (HCW) behavior is important for improving the use of infection prevention and control (IPC) practices. Given a patient requiring only standard precautions, we examined the dimensions along which different populations of HCWs cognitively organize patient care tasks (ie, their mental models).Design:HCWs read a description of a patient and then rated the similarities of 25 patient care tasks from an infection prevention perspective. Using multidimensional scaling, we identified the dimensions (ie, characteristics of tasks) underlying these ratings and the salience of each dimension to HCWs.Setting:Adult inpatient hospitals across an academic hospital network.Participants:In total, 40 HCWs, comprising infection preventionists and nurses from intensive care units, emergency departments, and medical-surgical floors rated the similarity of tasks. To identify the meaning of each dimension, another 6 nurses rated each task in terms of specific characteristics of tasks.Results:Each HCW population perceived patient care tasks to vary along 3 common dimensions; most salient was the perceived magnitude of infection risk to the patient in a task, followed by the perceived dirtiness and risk of HCW exposure to body fluids, and lastly, the relative importance of a task for preventing versus controlling an infection in a patient.Conclusions:For a patient requiring only standard precautions, different populations of HCWs have similar mental models of how various patient care tasks relate to IPC. Techniques for eliciting mental models open new avenues for understanding and ultimately modifying the cognitive determinants of IPC behaviors.
Comparison of levels of bullying, achievement motivation, and resilience among Syrian refugee students and Turkish students
Authors: Karaman Mehmet Akif 
Published: September 2021

AbstractThis study aimed to examine bullying, achievement motivation, and resilience levels of both Syrian refugee students and Turkish students at an Islamic religion-based high school for boys. The sample included 289 students. One hundred and forty-three (49.50%) of the participants were Syrian and 146 (50.50%) were Turkish students. The mean age of the participants was 16 years (SD= 1.30). This study found that the level of bullying among refugee students was higher, and the level of achievement motivation was lower than for Turkish students. However, there was not a significant difference with regard to resilience scores. In terms of grade level, 9th-grade students reported lower scores of bullying than 10th- and 12th-grade students. The results indicated that bullying, resilience, and the demographic information of nationality (Syrian and Turkish) were significant predictors of achievement motivation. In addition, the relationship of resilience with achievement motivation was the same strength for both groups when separately analysed. These findings may help school counsellors, teachers and administrators to raise awareness in schools about issues such as forced migration and refugee psychology, trauma and its effects, bullying, low motivation, and problems faced by refugee students in general.
New insights into the late Middle Stone Age occupation of Oued el Akarit, southern Tunisia
Authors: Barton R.N.E. , Belhouchet L. , Collcutt S.N. , Aouadi N. , Albert P.G. , Douka K. , Drake N. , Linderholm L. , Macphail R.I. , McLean D. , Mekki H. , Peat D. , Schwenninger J.-L. , Smith V.C. 
Published: September 2021

AbstractThis article reports on a new project to investigate the activities of earlyHomo sapiensin the area of the Chotts ‘megalake’ in southern Tunisia. Excavations in 2015 and 2019 at Oued el Akarit revealed one of a number of Middle Stone Age (MSA) horizons near the top of a long sequence of Upper Pleistocene deposits. The site identified as Oued el Akarit (Sondage 8) consists of lithic artefacts, bone fragments of large ungulates and pieces of ostrich eggshell. Many of the objects are burnt. Excavation of about nine square metres revealed that these were associated with a lightly trampled and combusted occupation surface. Amongst the identified artefacts were Levallois flakes some of which could be refitted, thereby indicating the generally undisturbed nature of the occupation. The lithic finds also included side scrapers and other tools diagnostic of the MSA but significantly no bifacial or tanged tools. OSL (Optically Stimulated Luminescence) dating of the sediments and AMS (Accelerator Mass Spectrometry) radiocarbon dating of ostrich eggshell have produced uncalibrated age determinations in the range 37,000–40,000 years ago, one of the youngest ages for MSA sites in the region. This is the first example of a securely dated later MSA occupation in a riparian environment in south-eastern Tunisia.
A Paleo-Lake and wetland paleoecology associated with human use of the distal Old River Bed Delta at the Pleistocene-Holocene transition in the Bonneville Basin, Utah, USA
Authors: Palacios-Fest Manuel R. , Duke Daron , Young D. Craig , Kirk Jason D. , Oviatt Charles G. 
Published: September 2021

AbstractMollusk and ostracode assemblages from the distal Old River Bed delta (ORBD) contribute to our understanding of the Lake Bonneville basin Pleistocene-Holocene transition (PHT) wetland and human presence on the ORBD (ca. 13,000–7500 cal yr BP). Located on U.S. Air Force-managed lands of the Great Salt Lake Desert (GSLD) in western Utah, USA, the area provided 30 samples from 12 localities. The biological assemblages and the potential water sources using87Sr/86Sr analyses showed wetland expansion and contraction across the PHT, including the Younger-Dryas Chronozone (YDC). The record reflects cold, freshwater conditions, which is uncharacteristic of the Great Salt Lake Desert, after recession of Lake Bonneville.Lymnaea stagnalis jugularis,Cytherissa lacustris, and possiblyCandonasp. cf.C.adunca, an endemic and extinct species only reported from Lake Bonneville, suggest cold-water environments. Between 13,000–12,400 cal yr BP, a shallow lake formed, referred to as the Old River Bed delta lake, fed by Lake Gunnison, as shown by87Sr/86Sr ratios of 0.71024–0.71063 in mollusk fossils collected at the ORBD, characteristic of the Sevier basin. These findings add paleoenvironmental context to the long-term use of the ORBD by humans in constantly changing wetland habitats between 13,000–9500 cal yr BP.
Something old, something blue: bereavement and institutional ageism in The Gigantic Beard That Was Evil
Authors: Lammon Marissa 
Published: September 2021

AbstractThe dystopian fiction genre within Western media has historically highlighted the flaws associated with societal attempts to achieve an unattainable ideal – or utopia. Through storytelling, these texts highlight the present issues in society, and among them, readers find deeply concerning messages about dehumanisation and oppression. The Gigantic Beard That Was Evil by Stephen Collins is uniquely placed within this larger genre due to the exceptional use of negative space; that is, the text communicates multiple meanings through what Collins includes and does not include. The following article engages in a deep reading of The Gigantic Beard That Was Evil through textual analysis to interpret and describe the message Collins communicates highlighting institutional ageism and bereavement. Consideration for the use of both negative and positive space within narrative construction reveals a story that encourages societal and social change to better care for the mentally ill, geriatric population.
Solution Enumeration by Optimality in Answer Set Programming
Authors: PAJUNEN JUKKA , JANHUNEN TOMI 
Published: September 2021

AbstractGiven a combinatorial search problem, it may be highly useful to enumerate its (all) solutions besides just finding one solution, or showing that none exists. The same can be stated about optimal solutions if an objective function is provided. This work goes beyond the bare enumeration of optimal solutions and addresses the computational task of solution enumeration by optimality (SEO). This task is studied in the context of answer set programming (ASP) where (optimal) solutions of a problem are captured with the answer sets of a logic program encoding the problem. Existing answer set solvers already support the enumeration of all (optimal) answer sets. However, in this work, we generalize the enumeration of optimal answer sets beyond strictly optimal ones, giving rise to the idea of answer set enumeration in the order of optimality (ASEO). This approach is applicable up to the best k answer sets or in an unlimited setting, which amounts to a process of sorting answer sets based on the objective function. As the main contribution of this work, we present the first general algorithms for the aforementioned tasks of answer set enumeration. Moreover, we illustrate the potential use cases of ASEO. First, we study how efficiently access to the next-best solutions can be achieved in a number of optimization problems that have been formalized and solved in ASP. Second, we show that ASEO provides us with an effective sampling technique for Bayesian networks.
Foreign judges of the Pacific as agents of global constitutionalism
Authors: Dziedzic Anna 
Published: September 2021

AbstractStudies of global constitutionalism have focused on the transnational movement of constitutional law through the citation of foreign judgments. However, little attention has been paid to the movement of constitutional judges themselves. This article considers how the foreign judges who sit on courts of constitutional jurisdiction in Pacific island states can be understood as part of the phenomenon of global constitutionalism. It identifies three ways in which foreign judges can be agents of global constitutionalism: as mechanisms for the diffusion of constitutional ideas, as expressions of global constitutional values and as objects of transnational legal transfer. An empirical analysis comparing the citation practices of local and foreign judges in constitutional cases in nine Pacific states suggests that the use of foreign judges on constitutional courts does contribute to the international movement of constitutional ideas. However, a critical analysis of foreign judges as expressions and objects of global constitutionalism sheds light on a range of tensions in the role of constitutional judges and understandings of global constitutionalism.
Global constitutionalism in Taiwan
Authors: Lin Chien-Chih 
Published: September 2021

AbstractIn contrast with the decline of liberal constitutionalism around the world, liberal constitutionalism seems to be resilient in Taiwan. Weaving together several threads of history, law and politics, this article first argues that foreign legal education and identity concerns explain why judicial review and constitutional development more broadly in Taiwan have not only flourished but mirrored both German and American constitutional jurisprudence. Second, it maintains that the case of Taiwan poses another challenge to the concept of global constitutionalism since the number of referenced jurisdictions is quite limited.
Post-Traumatic Growth among Older People after the Forced Lockdown for the COVID–19 Pandemic
Authors: Celdrán Montserrat , Serrat Rodrigo , Villar Feliciano 
Published: September 2021

Abstract
We explored post-traumatic growth (PTG) in older adults immediately after the forced lockdown in Spain during March to April, 2020, due to the COVID–19 pandemic. The study also tried to identify the variables that predict PTG, focusing on the experience of COVID, sociodemographic variables, and social resources. In total 1,009 people aged 55 years and older participated in the study and completed an online questionnaire comprising the following elements: The short form of the Post-traumatic Growth Inventory (PTGI-SF), sociodemographic and social resources questions, and their experiences of COVID–19 (if they had been infected themselves or if they had experienced the loss of someone close). Results showed that only a quarter of the participants experienced higher PTG after the forced lockdown, with only age and social resources being correlated with scores on the PTGI-SF. Looking at the strengths that older adults put into action to combat the pandemic and its social and health consequences could be an important consideration when planning future social policies for this and other pandemics.
Extreme Ozone Loss Following Nuclear War Results in Enhanced Surface Ultraviolet Radiation
Authors: Bardeen Charles G. , Kinnison Douglas E. , Toon Owen B. , Mills Michael J. , Vitt Francis , Xia Lili , Jägermeyr Jonas , Lovenduski Nicole S. , Scherrer Kim J. N. , Clyne Margot , Robock Alan 
Published: September 2021

AbstractFor the first time, we use a modern climate model with interactive chemistry including the effects of aerosols on photolysis rates to simulate the consequences of regional and global scale nuclear wars (injecting 5 and 150 Tg of soot respectively) for the ozone layer and surface ultraviolet (UV) light. For a global nuclear war, heating in the stratosphere, reduced photolysis, and an increase in catalytic loss from the HOx cycle cause a 15 year‐long reduction in the ozone column, with a peak loss of 75% globally and 65% in the tropics. This is larger than predictions from the 1980s, which assumed large injections of nitrogen oxides (NOx), but did not include the effects of smoke. NOx from the fireball and the fires provide a small (5%) increase to the global average ozone loss for the first few years. Initially, soot would shield the surface from UV‐B, but UV Index values would become extreme: greater than 35 in the tropics for 4 years, and greater than 45 during the summer in the southern polar regions for 3 years. For a regional war, global column ozone would be reduced by 25% with recovery taking 12 years. This is similar to previous simulations, but with a faster recovery time due to a shorter lifetime for soot in our simulations. In‐line photolysis provides process specific action spectra enabling future integration with biogeochemistry models and allows output that quantifies the potential health impacts from changes in surface UV for this and other larger aerosol injections.