bluuebunny/crossref_metadata_2025_split huggingface dataset:
Skew Category Algebras
Authors: Bavula V. V. 
Published: November 2019

Abstract
We study a new (large) class of algebras (that was introduced in Bavula in Math Comput Sci 11(3–4):253–268, 2017)—the skew category algebras. Any such an algebra $$ \mathcal{C}(\sigma )$$C(σ) is constructed from a category $$ \mathcal{C}$$C and a functor $$\sigma $$σ from the category $$ \mathcal{C}$$C to the category of algebras. Criteria are given for the algebra $$ \mathcal{C}(\sigma )$$C(σ) to be simple or left Noetherian or right Noetherian or semiprime or have 1.
Pavel Florensky’s Theory of Religious Antinomies
Authors: Rojek Paweł 
Published: November 2019

AbstractPavel Florensky (1882–1937), a Russian theologian, philosopher, and mathematician, argued that the religious discourse is essentially contradictory and put forward the idea of the logical theory of antinomies. Recently his views raised interesting discussions among logicians who consider him a forerunner of many non-classical logics. In this paper I discuss four interpretations of Florensky’s views: paraconsistent, L-contradictory, non-monotonic and rhetorical. In conclusion I argue for the integral interpretation which unites these four approaches.
The petrological characteristics and significance of organic-rich shale in the Chang 7 member of the Yanchang Formation, south margin of the Ordos basin, central China
Authors: Li Sen , Zhu Ru-Kai , Cui Jing-Wei , Luo Zhong , Cui Jing-Gang , Liu Han , Li Wei-Qiang 
Published: November 2019

AbstractThe organic-rich shale of the Chang 7 member is the most important source rock in the Ordos basin. The sedimentary environment and the controlling factors of organic matter enrichment, however, are still in contention. In this investigation, the Yishicun outcrop, located on the south margin of the Ordos basin, has been considered for the study. X-ray diffraction, polarizing microscopy, field emission scanning electron microscopy and cathodoluminescence (CL) were used to investigate the petrological features of the organic-rich shale. The content of volcanic ash and the diameter of pyrite framboid pseudocrystals were measured to illustrate the relationship between oxygen level, ash content and the enrichment of organic matter. It has been found that the diameter of pyrite framboid pseudocrystals has a strong correlation with the total organic carbon, demonstrating that the redox status degree of the water column has a positive impact on the enrichment of organic matter. Additionally, with an increase in the ash content, the content of organic matter increased at first and then decreased, and reached a maximum when the ash content was about 6%, illustrating that the ash input has a double effect on the enrichment of organic matter.
Influence of component design on extrusion processes in sheet-bulk metal forming
Authors: Pilz F. , Merklein M. 
Published: November 2019

Abstract
Nowadays, the functional integration of workpieces challenges existing forming processes. The combination of established forming processes – like sheet metal and bulk forming – offers the possibility to counter this issue. The application of bulk forming operations on sheet metal semi-finished products, also called sheet-bulk metal forming (SBMF), is an innovative approach. The potential of SBMF cannot be fully exploited, as there are no recommendations in terms of workpiece design and layout influence on the process result. Therefore, this paper focuses on the analysis of semi-finished products and component design parameters on resulting part and process properties in two extrusion processes in SBMF. The investigation is based on a combined numerical and experimental approach. It is shown that the investigated design parameters, in addition to the achievable dimensional accuracy, substantially influence the occurring tool loads as well as the required process forces.
The Pliocene flora of Frankfurt am Main, Germany: taxonomy, palaeoenvironments and biogeographic affinities
Authors: Kvaček Zlatko , Teodoridis Vasilis , Denk Thomas 
Published: November 2019

AbstractThe Pliocene flora of Frankfurt am Main described by Karl Mädler during the first half of the twentieth century is a key flora for the European Pliocene. In the present study, we revised the leaf fossil taxa described by Mädler and investigated plant material collected after Mädler’s publication. The revised and augmented floral list comprises seven new species and some new combinations of taxa described by Mädler. In total, 16 gymnosperm species in 15 genera and 73 angiosperm species (of which 15 could not be assigned to a genus) in 40 genera are recognised in the leaf record. Main characteristics of the flora are the high diversity of conifers, the diverse assemblage of exclusively deciduous Fagaceae, including six species of oaks, and the high diversity of Rosaceae. These features indicate cool temperate climatic conditions (comparable to Lugano in southern Switzerland). Angiosperm genera that are today confined to North America and/or East Asia (Eucommia,MagnoliaandSassafras) also are deciduous, whereas evergreen taxa are shrubs typical of the understorey (Buxus,Ilex,Pachysandra,Prunus lusitanicatype) andViscum. Eighteen taxa recorded in the Pliocene of Frankfurt am Main are today absent from western Eurasia and eastern North America, and 25 taxa are absent from western North America. This shows (i) a strong biogeographic link of the Pliocene flora of Frankfurt am Main with East Asia, (ii) surprisingly high levels of speciation (Pliocene endemisms) and (iii) that the European flora was more diverse in woody species shortly before the onset of major Pleistocene glaciations than today.
The glass swing: a vector active structure made of glass struts and 3D-printed steel nodes
Authors: Snijder A. H. , van der Linden L. P. L. , Goulas C. , Louter C. , Nijsse R. 
Published: November 2019

AbstractThe majority of glass used in load-bearing structures is as planar elements. Some projects exist that use linear glass elements. This paper discusses in broad terms the design, engineering, and fabrication of a unique vector active glass structure consisting of glass bundles and partly printed steel connections. A structure was conceived that utilizes the glass bundles in a way that can be directly experienced by the users: a swing. To create a non-standard form for the swing, a structural optimization procedure was used. To realize the structure, a novel steel node was developed and produced using an additive manufacturing technique in steel. These novel applications have made the project innovation heavy, particularly considering the limited timeframe for its development and construction. Description is given of the several optimization techniques incorporated in the digital process, the assembly and testing of the glass bundles, and the manufacturing of the steel nodes by Wire and Arc Additive Manufacturing.
The German Version of the PERMA-Profiler: Evidence for Construct and Convergent Validity of the PERMA Theory of Well-Being in German Speaking Countries
Authors: Wammerl Martin , Jaunig Johannes , Mairunteregger Thomas , Streit Philip 
Published: November 2019

Abstract
With the PERMA theory, Seligman (2011) postulates that well-being consists of five independently measurable factors: Positive Emotions (P), Engagement (E), Positive Relationships (R), Meaning (M) and Accomplishment (A). The PERMA-Profiler provides the first questionnaire, which measures all five well-being domains in an economical and reliable way. In order to test the validity of the questionnaire in German speaking countries, a German version of the PERMA-Profiler was developed and evaluated in a large sample (N = 854). The results provide evidence for acceptable reliability, very good construct validity (factorial and convergent) and first indications for measurement invariance, for both gender and nationality. Compared to three theoretically competing models, the inter-correlated Five-Factor Model turned out to be the most appropriate statistical model to describe the collected data. It revealed the best trade-off between model fit, parsimony and theoretical interpretability. Our results support the hypothesis of a multidimensional PERMA theory, which gives a closer insight in at least some of the building blocks of well-being. Therefore, the PERMA theory can be seen as a useful extension to a unidimensional subjective well-being approach. Like the English original, the German version of the PERMA-Profiler allows to measure well-being economically across multiple well-being domains. Therefore, the PERMA-Profiler can be recommended as a valid well-being screening instrument for the German speaking adult population.
QUEERING HETEROSEXUAL (INTERSECTARIAN) LOVE IN LEBANON
Authors: Allouche Sabiha 
Published: November 2019

AbstractThis article draws on a year of ethnography conducted among cis heterosexual couples in contemporary urban Lebanon in order to argue that, in the absence of a serious project of national reconciliation, intersectarian love, despite its short lifespan, constitutes restorative instances in post–civil war Lebanon. Intersectarian hetero desire emerges as a counter-discourse that threatens the masculinist foundations of the Lebanese state. By tracing the timeline of love in the life of Lebanese citizens, this article places personal narratives of “impossible” intersectarian love stories in conversation with queer temporality scholarship in order to recognize the political, albeit limited, potential of romantic love. Here, societal expectations of married life are replaced by an ephemeral unity that operatesin contrato hegemonic interpretations of “man and wife.”
Does tranexamic acid improve intra-operative visualisation in endoscopic ear surgery? A double-blind, randomised, controlled trial
Authors: Das A , Mitra S , Ghosh D , Kumar S , Sengupta A 
Published: November 2019

AbstractObjectiveTo assess the effect of tranexamic acid on intra-operative bleeding and surgical field visualisation.MethodsFifty patients undergoing various endoscopic ear surgical procedures, including endoscopic tympanoplasty, endoscopic atticotomy or mastoidectomy, endoscopic ossiculoplasty, and endoscopic stapedotomy, were randomly assigned to: a study group that received tranexamic acid or a control group which received normal saline. The intra-operative bleeding and operative field visualisation was graded using the Das and Mitra endoscopic ear surgery bleeding and field visibility score, which was separately analysed for the external auditory canal and the middle ear.ResultsThe Das and Mitra score was better (p < 0.05) in the group that received tranexamic acid as a haemostat when working in the external auditory canal; with respect to the middle ear, no statistically significant difference was found between the two agents. Mean values for mean arterial pressure, heart rate and surgical time were comparable in both groups, with no statistically significant differences.ConclusionTranexamic acid appears to be an effective haemostat in endoscopic ear surgery, thus improving surgical field visualisation, especially during manipulation of the external auditory canal soft tissues.
Decent Work in Scotland, an Agenda-Setting Analysis
Authors: PAUTZ HARTWIG , WRIGHT SALLY A. , COLLINS CHIK 
Published: November 2019

AbstractThis article uses John Kingdon’s multiple streams framework as an analytical tool to consider how the policy issue of ‘job quality’, in the guises of ‘decent work’ and ‘fair work’, developed a ‘career’ in Scotland between 2013 and 2017. The aim is to understand why, despite the efforts of a variety of policy entrepreneurs and the openness of the Scottish Government to this policy problem, job quality did not arrive on the Scottish Government’s decision agenda. The article finds that the crucial ‘policy window’ did not open due to the 2016 ‘Brexit’ decision dramatically changing the political landscape.The article demonstrates the applicability of Kingdon’s framework for agenda-setting analysis in a parliamentary environment and constitutes a rare application of the framework to a ‘live’ policy issue.The authors were involved in a research and advocacy project on ‘decent work’ that was undertaken in Scotland during 2015 and 2016 and therefore were amongst the policy entrepreneurs seeking to place job quality on the Scottish Government’s agenda.
Evaluation and Microanalysis of Parasitic and Bacterial Agents of Egyptian Fresh Sushi,Salmo salar
Authors: Abdel-Hakeem Sara S. , Mahmoud Ghada Abd-Elmonsef , Abdel-Hafeez Hanan H. 
Published: November 2019

AbstractThe present study aimed to evaluate the quality of fresh sushi in Egypt. Fifty samples of sushi (Salmo salar) were collected from restaurants in Alexandria, Egypt. Paraffin, semi-thin and ultra-thin sections were used for parasitological analysis bylight and transmission electron microscopy. Bacteria were isolated by the dilution plate and direct plate methods and identified by a Vitek system. Twenty (40%) of the total examined samples showed microsporidia and helminth metacercariae infections. Histochemical stains showed distinct pinkish-red pyriform microspores embedded in muscular tissue stained with Gram, periodic acid-Schiff (PAS), and Ziehl–Neelsen (ZN) stains. Semi-thin sections showed double membrane xenoma-inducing granulomas containing spores at different developmental stages. Empty sporophorous vesicles and free spores were observed in the electron microscopic images. A bacteriological assay showed forty samples (80%) contaminated with human pathogenic bacteria with the average total bacterial counts ranging from 32 to 526 CFU/g. Four species of human pathogenic bacteria were identified in the examined samples, namelyKlebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, andSerratia plymuthicain 40, 38, 11, and 6 samples, respectively. These constitute the first record of fresh sushi product in Egypt and indicate the potential pathogenicity associated with raw seafood products.
Annuity pricing in public pension plans: importance of interest rates
Authors: Abashidze Nino , Clark Robert L. , Hammond Robert G. , Ritter Beth M. , Vanderweide David 
Published: November 2019

AbstractThis study examines the distribution options of 85 large public retirement plans covering general state employees, teachers, and local government employees. The interest rates used to price annuities vary considerably across the plans. As a result, retirees with the same monthly benefit if a single life benefit is chosen will have substantially different monthly benefits if they select a joint and survivor annuity. We examine the impact of variation in the pricing of annuity options using both cross-plan differences in interest rates and the change in the choice of annuity options in one plan after the price of options changes due to new assumed interest rates and mortality rates.
Occurrence and Modeling Examination of Sporadic‐E Layers in the Region of the South America (Atlantic) Magnetic Anomaly
Authors: Conceição‐Santos Fredson , Muella Marcio T. A. H. , Resende Laysa C. A. , Fagundes Paulo R. , Andrioli Vania F. , Batista Paulo P. , Pillat Valdir G. , Carrasco Alexander J. 
Published: November 2019

AbstractIn this work, the occurrence of different types of sporadic‐E layers (Es) was described for two stations located in the region of the South America Magnetic Anomaly: Jataí and São José dos Campos. The results show the hourly and monthly values of the Es occurrences and presented five types of layers (cusp, high, flat, low, and slant), with the flat/low types (Esf/l) being the most frequent over both stations. We also analyzed the Es layer parameters of blanketing frequency (fbEs) and top frequency (ftEs) obtained from ionosonde data during storm‐time periods, in order to investigate possible evidences of energetic particle‐induced E‐layer ionization. The results revealed increases in the values of the nighttime ftEs and fbEs, which can be related to the particle precipitation in the South America Magnetic Anomaly region. Additionally, we investigated the roles of the wind shear mechanism in the formation of the Es types by using a modified form of the Ionospheric E‐Region Model (MIRE), which incorporates tidal winds obtained from meteor radar data. Furthermore, the electron densities deduced from fbEs parameter were compared with the maximum electron densities obtained from MIRE simulations. Depending on local time and season, the initial results revealed for both stations some discrepancies between modeled and measured electron densities. However, a better fitting was obtained when the amplitudes of the zonal/meridional wind components were adjusted by some factor, which may be attributed to the possible effects of day‐to‐day tidal wind variability and their interaction with gravity and planetary waves.
Taliks: A Tipping Point in Discontinuous Permafrost Degradation in Peatlands
Authors: Devoie Élise G. , Craig James R. , Connon Ryan F. , Quinton William L. 
Published: November 2019

AbstractTaliks (perennially thawed soil in a permafrost environment) are generally found beneath water bodies or wetlands, and their development and evolution in other environments is poorly documented. Sustained isolated taliks between seasonally frozen surface soils and permafrost have been observed at the Scotty Creek Research Station in the discontinuous permafrost region of the Northwest Territories, Canada. These taliks have been expanding both vertically and laterally over the past decade of monitoring. The main controls on expansion are thought to be (1) the availability of energy, determined by incoming radiation and advective heat flux, (2) the ability to transfer this energy to the freezing/thawing front, determined by the thermal conductivity (soil properties and moisture content), and (3) the presence and thickness of the snowpack. These controls are investigated using data collected in the field to inform a 1‐D coupled thermodynamic freeze‐thaw and unsaturated flow model. The model was successfully used to represent observed thaw rates in different parts of the landscape. It is found that high soil moisture, deeper snowpacks, and warmer or faster advective flow rates all contribute to accelerated talik growth and subsequent permafrost degradation. Simulations show that slight perturbations of available energy or soil properties, such as an increase in average surface temperature of 0.5°C or a 1‐cm change in snow water equivalent, can lead to talik formation, highlighting the vulnerability of this landscape to changes in climate or land cover.
The Role of the Amazon River Plume on the Intensification of the Hydrological Cycle
Authors: Gouveia N. A. , Gherardi D. F. M. , Aragão L. E. O. C. 
Published: November 2019

AbstractThe Amazon River low‐salinity plume takes part in important ocean and atmosphere processes that influence climate. In the last three decades, the intensification of the hydrological cycle has increased the interannual variability of total freshwater discharged into the ocean. However, the feedback mechanisms of the Amazon River plume acting on this intensification are not fully understood. Correlation maps and multiple regression analysis applied to 16 years of satellite data and river flow measurements indicate that a positive precipitation trend of 15 mm/year in the western Amazon basin follows the long‐term warming of the tropical Atlantic. This increased the total amount of freshwater discharged into the ocean and reduced the Amazon River plume salinity by 3.5% per year in the main plume water export pathway. Based on these results we propose a process‐oriented model of the feedback process that explains the intensification of the Amazon hydrological cycle.
Interglacial Paleoclimate in the Arctic
Authors: Cronin Thomas M. , Keller Katherine J. , Farmer Jesse R. , Schaller Morgan F. , O'Regan Matt , Poirier Robert , Coxall Helen , Dwyer Gary S. , Bauch Henning , Kindstedt Ingalise G. , Jakobsson Martin , Marzen Rachel , Santin Emiliano 
Published: November 2019

AbstractMarine Isotope Stage 11 from ~424 to 374 ka experienced peak interglacial warmth and highest global sea level ~410–400 ka. MIS 11 has received extensive study on the causes of its long duration and warmer than Holocene climate, which is anomalous in the last half million years. However, a major geographic gap in MIS 11 proxy records exists in the Arctic Ocean where fragmentary evidence exists for a seasonally sea ice‐free summers and high sea‐surface temperatures (SST; ~8–10 °C near the Mendeleev Ridge). We investigated MIS 11 in the western and central Arctic Ocean using 12 piston cores and several shorter cores using proxies for surface productivity (microfossil density), bottom water temperature (magnesium/calcium ratios), the proportion of Arctic Ocean Deep Water versus Arctic Intermediate Water (key ostracode species), sea ice (epipelagic sea ice dwelling ostracode abundance), and SST (planktic foraminifers). We produced a new benthic foraminiferal δ18O curve, which signifies changes in global ice volume, Arctic Ocean bottom temperature, and perhaps local oceanographic changes. Results indicate that peak warmth occurred in the Amerasian Basin during the middle of MIS 11 roughly from 410 to 400 ka. SST were as high as 8–10 °C for peak interglacial warmth, and sea ice was absent in summers. Evidence also exists for abrupt suborbital events punctuating the MIS 12‐MIS 11‐MIS 10 interval. These fluctuations in productivity, bottom water temperature, and deep and intermediate water masses (Arctic Ocean Deep Water and Arctic Intermediate Water) may represent Heinrich‐like events possibly involving extensive ice shelves extending off Laurentide and Fennoscandian Ice Sheets bordering the Arctic.
Rapid evolution and biogeographic spread in a colorectal cancer
Authors: Alves Joao M. , Prado-López Sonia , Cameselle-Teijeiro José Manuel , Posada David 
Published: November 2019

AbstractHow and when tumoral clones start spreading to surrounding and distant tissues is currently unclear. Here we leveraged a model-based evolutionary framework to investigate the demographic and biogeographic history of a colorectal cancer. Our analyses strongly support an early monoclonal metastatic colonization, followed by a rapid population expansion at both primary and secondary sites. Moreover, we infer a hematogenous metastatic spread under positive selection, plus the return of some tumoral cells from the liver back to the colon lymph nodes. This study illustrates how sophisticated techniques typical of organismal evolution can provide a detailed, quantitative picture of the complex tumoral dynamics over time and space.
A comparative study between two models of active cluster crystals
Authors: Caprini Lorenzo , Hernández-García Emilio , López Cristóbal , Marini Bettolo Marconi Umberto 
Published: November 2019

AbstractWe study a system of active particles with soft repulsive interactions that lead to an active cluster-crystal phase in two dimensions. We use two different modelizations of the active force - Active Brownian particles (ABP) and Ornstein-Uhlenbeck particles (AOUP) - and focus on analogies and differences between them. We study the different phases appearing in the system, in particular, the formation of ordered patterns drifting in space without being altered. We develop an effective description which captures some properties of the stable clusters for both ABP and AOUP. As an additional point, we confine such a system in a large channel, in order to study the interplay between the cluster crystal phase and the well-known accumulation near the walls, a phenomenology typical of active particles. For small activities, we find clusters attached to the walls and deformed, while for large values of the active force they collapse in stripes parallel to the walls.