bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cross-chain deals and adversarial commerce
Authors: Herlihy Maurice , Liskov Barbara , Shrira Liuba 
Published: August 2021

AbstractModern distributed data management systems face a new challenge: how can autonomous, mutually distrusting parties cooperate safely and effectively? Addressing this challenge brings up familiar questions from classical distributed systems: how to combine multiple steps into a single atomic action, how to recover from failures, and how to synchronize concurrent access to data. Nevertheless, each of these issues requires rethinking when participants are autonomous and potentially adversarial. We propose the notion of a cross-chain deal, a new way to structure complex distributed computations that manage assets in an adversarial setting. Deals are inspired by classical atomic transactions, but are necessarily different, in important ways, to accommodate the decentralized and untrusting nature of the exchange. We describe novel safety and liveness properties, along with two alternative protocols for implementing cross-chain deals in a system of independent blockchain ledgers. One protocol, based on synchronous communication, is fully decentralized, while the other, based on semi-synchronous communication, requires a globally shared ledger. We also prove that some degree of centralization is required in the semi-synchronous communication model.
Does #Tamojunto alter the dynamic between drug use and school violence among youth? Secondary analysis from a large cluster-randomized trial
Authors: Cogo-Moreira Hugo , Gusmões Julia D. , Valente Juliana Y. , Eid Michael , Sanchez Zila M. 
Published: August 2021

AbstractThe present study investigated how intervention might alter the relationship between perpetrating violence and later drug use. A cluster-randomized controlled trial design involving 72 schools (38 intervention, 34 control) and 6390 students attending grades 7 and 8 was employed in Brazil. Drug use and violence were assessed at three points. A random-intercept cross-lagged panel model examined the reciprocal association between drug use and school violence domains across the three data collection waves. For both groups, we found that the cross-lagged effect of perpetration on further drug use in adolescents was stronger than the reverse, but the interrelationship was not statistically significant between #Tamojunto and control schools. The carry-over effects of drug use and violence were also not significantly different between groups. There is a lack of evidence showing that #Tamojunto can modify the dynamics between drug use and school violence across the 21-month period. The direction of the causal effect (i.e., the more perpetration behavior, the more subsequent drug use behavior) is present, but weak in both groups. The trial registration protocol at the national Brazilian Register of Clinical Trials (REBEC) is #RBR-4mnv5g.
Dialysis-related carpal tunnel syndrome in the past 40 years
Authors: Hatano Masaki , Kitajima Izuru , Yamamoto Seizo , Nakamura Masaki , Isawa Kazuya , Suwabe Tatsuya , Hoshino Junichi , Sawa Naoki , Ubara Yoshifumi 
Published: August 2021

Abstract
Purpose and method
Patients on hemodialysis develop carpal tunnel syndrome (CTS) due to an accumulation of dialysis-related β2 microglobulin (β2m) amyloid (DRA). In Japan, dialysis technology has progressed remarkably in the past 40 years and has increased the time until patients require surgery for CTS. However, unclear is whether the time from the start of hemodialysis to the first surgery for CTS is associated with β2m clearance by the different hemodialysis techniques. Therefore, we retrospectively evaluated β2m clearance, serum β2m levels, and the change in the length of this period in patients across 4 periods according to the year that first surgery for CTS was performed: period 1, 1982–1989; period 2, 1990–1999; period 3, 2000–2009; and period 4, 2010–2019.

Result
A total of 222 patients who met the selection criteria were included. Mean β2m clearance was −1.8 ± 16.7% in period 1, and improved to 65.4 ± 8.6% in period 3. Accordingly, the serum β2m value after hemodialysis decreased significantly. The time from the start of hemodialysis to the first surgery for CTS was 12.4 ± 2.9 years in period 1 but increased to 21.8 ± 6.3 years in period 3. In multivariable linear regression analysis, the significant factors contributing to β2m clearance were periods 2, 3, and 4. In particular, the relation between removal of β2m and the extension of the dialysis vintage in period 1 and 2 was remarkable compared with periods 3 and 4.

Conclusion
Our findings indicate that improvement of β2m clearance via advances in dialysis technology might result in a significant extension in the time between starting HD and the first surgery for CTS.
A carbuncle cure for the Harten-Lax-van Leer contact (HLLC) scheme using a novel velocity-based sensor
Authors: Vevek U. S. , Zang B. , New T. H. 
Published: August 2021

AbstractA hybrid numerical flux scheme is proposed by adapting the carbuncle-free modified Harten-Lax-van Leer contact (HLLCM) scheme to smoothly revert to the Harten-Lax-van Leer contact (HLLC) scheme in regions of shear. This hybrid scheme, referred to as the HLLCT scheme, employs a novel, velocity-based shear sensor. In contrast to the non-local pressure-based shock sensors often used in carbuncle cures, the proposed shear sensor can be computed in a localized manner meaning that the HLLCT scheme can be easily introduced into existing codes without having to implement additional data structures. Through numerical experiments, it is shown that the HLLCT scheme is able to resolve shear layers accurately without succumbing to the shock instability.
Collective action problems and governance barriers to sea-level rise adaptation in San Francisco Bay
Authors: Lubell Mark , Stacey Mark , Hummel Michelle A. 
Published: August 2021

AbstractThis paper translates Ostrom’s “diagnostic approach” for social-ecological systems to identify the collective action problems and core governance barriers for sea-level rise adaptation in the San Francisco Bay Area. The diagnostic approach considers variables related to the resource system, the resource units, the users, and the governance system. Coupled ecological-infrastructure models identify two core collective action problems: vulnerability interdependency and adaptation interdependency. Qualitative social science case study methods identify the key structural governance and behavioral barriers to cooperation and ongoing activities to address them. The diagnostic approach is potentially applicable to any coastal regions that are vulnerable to sea-level rise and also other climate adaptation issues where vulnerability and adaptation interdependencies require overcoming governance challenges to collective action.
Mobilizing private adaptation finance: lessons learned from the Green Climate Fund
Authors: Stoll P. P. , Pauw W. P. , Tohme F. , Grüning C. 
Published: August 2021

AbstractThe mobilization of effective private sector engagement is considered to be critical to address the adaptation challenge, but literature demonstrates that it has proven difficult. In the context of international climate finance, the focus has been on mobilizing private finance for adaptation and in addressing barriers that prevent investments from materializing. In contrast, this article identifies options to engage the private sector in adaptation beyond finance and focuses on market imperfections instead of barriers. This moves the focus away from simply mobilizing more private adaptation finance towards identifying market forces that innovate, engage, and direct investments towards adaptation. The Green Climate Fund (GCF) and its portfolio of 74 adaptation projects serve as a case study. Two of these projects are categorized as private sector projects and an additional nine mobilize private co-finance or non-financial private contributions. Beyond these two indicators, we demonstrate that an additional 60 projects engage the private sector in other ways, thus indicating the important broader role of the private sector in adaptation. Furthermore, our ordinal regression demonstrates that by addressing the market imperfections of positive externalities, imperfect financial markets, and incomplete and/or asymmetric information, all have a significant positive effect on private sector engagement in the GCF’s adaptation portfolio. Both findings indicate that there is a large potential for the GCF—and other climate finance providers—to increase private sector engagement in adaptation. It must be noted, however, that the mobilization of private sector engagement in adaptation is a means to an end, not an end in itself. The main aim should be to adapt society as a whole in an efficient manner, including the most vulnerable groups and people.
Medical and public health instructors’ perceptions of online teaching: A qualitative study using the Technology Acceptance Model 2
Authors: Zhu Meina , Zhang Yu 
Published: August 2021

AbstractMany universities in the U.S. shifted from in-person teaching to online teaching due to the COVID-19 pandemic. Instructors’ acceptance of online teaching plays a crucial role, as the acceptance level can impact instructors’ online teaching behaviors. This qualitative study examined medicine and public health instructors’ perceptions of online teaching using the Technology Acceptance Model 2 (TAM2) model. Through semi-structured interviews with ten instructors in a Midwest university in the U.S., this study found that instructors had a high level of acceptance of online teaching. Instructors perceived the usefulness of online teaching in terms of learning objectives, assessment, instructional methods, and learning experience. Online teaching was perceived as useful overall, although challenges existed, such as online interaction, assessment, and hands-on practices. Regarding ease of use in online teaching, instructors perceived technology was easy to use; yet some pedagogical challenges existed, such as class engagement, the focus of learners’ attention, and transforming hands-on lab or clinical sessions online. The blended model is recommended to use for teaching and learning in medical and public health education post the pandemic. Detailed implications for practice and research were discussed in the end.
Nitro- and oxy-PAHs in grassland soils from decade-long sampling in central Europe
Authors: Wietzoreck M. , Bandowe B. A. M. , Hofman J. , Martiník J. , Nežiková B. , Kukučka P. , Přibylová P. , Lammel G. 
Published: August 2021

AbstractLong-term exposure to polycyclic aromatic hydrocarbons (PAHs) and their nitrated (NPAHs) and oxygenated (OPAHs) derivatives can cause adverse health effects due to their carcinogenicity, mutagenicity and oxidative potential. The distribution of PAH derivatives in the terrestrial environment has hardly been studied, although several PAH derivatives are ubiquitous in air and long-lived in soil and water. We report the multi-annual variations in the concentrations of NPAHs, OPAHs and PAHs in soils sampled at a semi-urban (Mokrá, Czech Republic) and a regional background site (Košetice, Czech Republic) in central Europe. The concentrations of the Σ18NPAHs and the Σ11+2OPAHs and O-heterocycles were 0.31 ± 0.23 ng g−1 and 4.03 ± 3.03 ng g−1, respectively, in Košetice, while slightly higher concentrations of 0.54 ± 0.45 ng g−1 and 5.91 ± 0.45 ng g−1, respectively, were found in soil from Mokrá. Among the 5 NPAHs found in the soils, 1-nitropyrene and less so 6-nitrobenzo(a)pyrene were most abundant. The OPAHs were more evenly distributed. The ratios of the PAH derivatives to their parent PAHs in Košetice indicate that they were long-range transported to the background site. Our results show that several NPAHs and OPAHs are abundant in soil and that gas-particle partitioning is a major factor influencing the concentration of several semi-volatile NPAHs and OPAHs in the soils. Complete understanding of the long-term variations of NPAH and OPAH concentrations in soil is limited by the lack of kinetic data describing their formation and degradation.
Pupils’ prior knowledge about technological systems: design and validation of a diagnostic tool for primary school teachers
Authors: Wammes Dannie , Slof Bert , Schot Willemijn , Kester Liesbeth 
Published: August 2021

AbstractThis study aimed to develop and validate, based on the Evidence Centered Design approach, a generic tool to diagnose primary education pupils’ prior knowledge of technological systems in primary school classrooms. Two technological devices, namely the Buzz Wire device and the Stairs Marble Track, were selected to investigate whether theoretical underpinnings could be backed by empirical evidence. Study 1 indicated that the tool enabled pupils to demonstrate different aspects of their prior knowledge about a technological system by a wide variety of work products. Study 2 indicated that these work products could be reliably ranked from low to high functionality by technology education experts. Their rank order matched the Fischer-scale-based scoring rules, designed in cooperation with experts in skill development. The solution patterns fit the extended non-parametric Rasch model, confirming that the task can reveal differences in pupils’ prior knowledge on a one-dimensional scale. Test–retest reliability was satisfactory. Study 3 indicated that the diagnostic tool was able to capture the range of prior knowledge levels that could be expected of 10 to 12 years old pupils. It also indicated that pupils’ scores on standardised reading comprehension and mathematics test had a low predictive value for the outcomes of the diagnostic tool. Overall, the findings substantiate the claim that pupils’ prior knowledge of technological systems can be diagnosed properly with the developed tool, which may support teachers in decisions for their technology lessons about content, instruction and support.
Study of cytotoxic activity of Ti–13Nb–13Zr medical alloy with different surface finishing techniques
Authors: Hoppe Viktoria , Szymczyk-Ziółkowska Patrycja , Rusińska Małgorzata , Poradowski Dominik , Janeczek Maciej , Ziółkowski Grzegorz , Dybała Bogdan 
Published: August 2021

AbstractThe characterization of materials surface is essential, as the initial in vivo response is highly dependent on surface properties. Surface topography is a key aspect that influences the response of cells to products resulting from interaction with the surface of a titanium alloy, including parameters such as adhesion, spread, migration, proliferation, and differentiation of cells. Various surface modifications are used to improve the interface properties between MC3T3 and NHDF cells and the Ti–13Nb–13Zr-based surface. Among the techniques discussed in this paper, scanning electron microscopy, laser confocal scanning microscopy, and computed tomography are adequate to investigate materials topography at different scale levels. Chemical characterization of the outer layers of Ti–13Nb–13Zr samples was performed with X-ray photoelectron spectrometry. Studies have shown that the surfaces resulting from the treatment enabling the formation of titanium oxide and zirconium oxide show the lowest cytotoxicity. Implants made from the new generation of titanium alloy, not containing toxic elements, with the use of surface modification could be an essential innovation in implantology.
Chemical Cues from Entomopathogenic Nematodes Vary Across Three Species with Different Foraging Strategies, Triggering Different Behavioral Responses in Prey and Competitors
Authors: Grunseich John M. , Aguirre Natalie M. , Thompson Morgan N. , Ali Jared G. , Helms Anjel M. 
Published: August 2021

AbstractChemical cues play important roles in predator–prey interactions. Semiochemicals can aid predator foraging and alert prey organisms to the presence of predators. Previous work suggests that predator traits differentially influence prey behavior, however, empirical data on how prey organisms respond to chemical cues from predator species with different hunting strategies, and how foraging predators react to cues from potential competitors, is lacking. Furthermore, most research in this area has focused on aquatic and aboveground terrestrial systems, while interactions among belowground, soiling-dwelling organisms have received relatively little attention. Here, we assessed how chemical cues from three species of entomopathogenic nematodes (EPNs), each with a different foraging strategy, influenced herbivore (cucumber beetle) and natural enemy (EPN) foraging behavior. We predicted these cues could serve as chemical indicators of increased predation risk, prey availability, or competition. Our findings revealed that foraging cucumber beetle larvae avoided chemical cues from Heterorhabditis bacteriophora (active-foraging cruiser EPNs), but not Steinernema carpocapsae (ambusher EPNs) or Steinernema riobrave (intermediate-foraging EPNs). In contrast, foraging H. bacteriophora EPNs were attracted to cues produced by the two Steinernema species but not conspecific cues. Notably, the three EPN species produced distinct blends of olfactory cues, with only a few semi-conserved compounds across species. These results indicate that a belowground insect herbivore responds differently to chemical cues from different EPN species, with some EPN species avoiding prey detection. Moreover, the active-hunting EPNs were attracted to heterospecific cues, suggesting these cues indicate a greater probability of available prey, rather than strong interspecific competition.
Lifestyle and Life Satisfaction: The Role of Delayed Gratification
Authors: Gschwandtner Adelina , Jewell Sarah , Kambhampati Uma S. 
Published: August 2021

AbstractThis paper considers the impact of two measures of lifestyle—the consumption of fruit and vegetables and doing exercise—on individual well-being. Since lifestyle is likely to be endogenous, we correct for this by using two dimensions of delayed gratification as instruments. The ability to delay gratification enables individuals to give greater weight to the investment component of lifestyle decisions rather than merely the affective component. Our analysis is based on the UK Understanding Society Data, which covers 40,000 UK households over time. We find that the two delayed gratification instruments are positive and significant in influencing lifestyle. In Stage 2, we find that fruit and vegetable consumption and sports activity increase life satisfaction, though the impacts vary for men and women. These results are robust across income quartiles, region, gender, education and age groups.
Irony as a Test of the Presupposition-Denial Account: An ERP Study
Authors: Filik Ruth , Ingram Joanne , Moxey Linda , Leuthold Hartmut 
Published: August 2021

AbstractAccording to the Presupposition-Denial Account, complement set reference arises when focus is on the shortfall between the amount conveyed by a natural language quantifier and a larger, expected amount. Negative quantifiers imply a shortfall, through the denial of a presupposition, whereas positive quantifiers do not. An exception may be provided by irony. One function of irony is to highlight, through indirect negation, the shortfall between what is expected/desired, and what is observed. Thus, a positive quantifier used ironically should also lead to a shortfall and license complement set reference. Using ERPs, we examined whether reference to the complement set is more felicitous following a positive quantifier used ironically than one used non-ironically. ERPs during reading showed a smaller N400 for complement set reference following an ironic compared to a non-ironic context. The shortfall generated thorough irony is sufficient to allow focus on the complement set, supporting the Presupposition-Denial Account.
A Recast Framework for Welfare Deservingness Perceptions
Authors: Knotz Carlo Michael , Gandenberger Mia Katharina , Fossati Flavia , Bonoli Giuliano 
Published: August 2021

AbstractMany important societal debates revolve around questions of deservingness, especially when it comes to debates related to inequality and social protection. It is therefore unsurprising that a growing body of research spanning the social and political sciences is concerned with the determinants of deservingness perceptions. In this contribution, we engage with the currently central theoretical framework used in deservingness research and point out an important weakness: Partly ambiguous definitions of the framework’s central concepts, the criteria for perceived deservingness. We also highlight the negative consequences this has for empirical research, including notably varying and overlapping operationalizations and thereby a lacking comparability of results across studies. Our main contribution is a redefinition of the criteria for perceived deservingness and a demonstration of the empirical implications of using this new set of criteria via original vignette survey experiments conducted in Germany and the United States in 2019. Our results provide a clearer image of which criteria drive deservingness perceptions.
Married Adults Coresiding with Older Parents: Implications for Paid Work and Domestic Workloads
Authors: Hertog Ekaterina , Kan Man-Yee 
Published: August 2021

AbstractThe rise of life expectancy throughout the developed world has meant that older adults play an increasingly important role in their grown-up children’s lives. We evaluate whether the intergenerational solidarity theory is useful for understanding the intergenerational transfers of time in Japan given the relatively generous welfare provision for the older adults and the fall in intergenerational coresidence. We apply seemingly unrelated regression models to data of the 2006 Japanese Survey on Time Use and Leisure Activities (Statistics Bureau Japan, 2006) to investigate how coresidence patterns are associated with paid and unpaid work time of adult married children. The sample contains 23,226 married couples where both husband and wife are aged 20 to 59. We find evidence of intergenerational solidarity in coresident households. We also find that “doing gender” is layered through intergenerational exchanges of support between married working-age children and their older parents. Working-age women’s time use patterns are associated with coresidence arrangements and care needs of their older relatives to a much greater extent than working-age men’s. The observed patterns are consistent with healthy older women supporting their daughters’ careers in exchange for care when they need help themselves. For working-age men, the patterns are not very pronounced. Notably, working-age husbands without children appear to be more responsive to their older the parents’ care needs, suggesting that fatherhood may be associated with solidifying gendered role performance within Japanese couples.