bluuebunny/crossref_metadata_2025_split huggingface dataset:
Successful hemostasis of bleeding gastric inflammatory fibroid polyp by endoscopic treatment in a patient with severe COVID-19
Authors: Murota Ayako , Yoshi Shinji , Okuda Ryu , Oowada Sae , Yamakawa Tsukasa , Kazama Tomoe , Hirayama Daisuke , Ishigami Keisuke , Yamano Hiro-O. , Narimatu Eichi , Sugita Shintaro , Hasegawa Tadashi , Nakase Hiroshi 
Published: April 2021

AbstractThe coronavirus disease-2019 (COVID-19) has rapidly become a pandemic, resulting in a global suspension of non-emergency medical procedures such as screening endoscopic examinations. There have been several reports of COVID-19 patients presenting with gastrointestinal symptoms such as diarrhea and vomiting. In this report, we present a case of successful hemostasis of bleeding gastric inflammatory fibroid polyp by endoscopic treatment in a patient with severe COVID-19. The case was under mechanical ventilation with extracorporeal membrane oxygenation (ECMO), and the airway was on a closed circuit. This indicates that COVID-19 is associated with not only lung injury but also intestinal damage, and that proper protective protocols are essential in guaranteeing the best outcomes for patients and clinical professionals during this pandemic.
Extension of the process limits in laser beam welding of thick-walled components using the Laser Multi-Pass Narrow-Gap welding (Laser-MPNG) on the example of the nickel-based material Alloy 617 occ
Authors: Kessler Benjamin , Dittrich Dirk , Brenner Berndt , Standfuss Jens , Leyens Christoph 
Published: April 2021

AbstractThe joining of thick-walled components using beam-based joining techniques is content of worldwide research and development activities, but has not yet been established in industry. State of the art to weld nickel super alloys is currently a TIG narrow-gap welding. The present paper is focusing on a new specific laser beam welding process, the so-called Laser Multi-Pass Narrow-Gap welding (Laser-MPNG). It first explains the process principle based on 2D beam oscillation, the use of fiber lasers and the multi-pass principle. The potential of the Laser-MPNG welding process is demonstrated using the technically significant nickel-based material Alloy 617 occ. As a result, it was possible for the first time to realize a weld with a wall thickness of 140 mm free of cracks or bonding defects. Promising results of creep and low-cycle fatigue tests are used to show the potential that Laser-MPNG welded joints would have for future industrial applications.
A physically consistent particle method for high-viscous free-surface flow calculation
Authors: Kondo Masahiro , Fujiwara Takahiro , Masaie Issei , Matsumoto Junichi 
Published: April 2021

AbstractParticle methods for high-viscous free-surface flows are of great use to capture flow behaviors which are intermediate between solid and liquid. In general, it is important for numerical methods to satisfy the fundamental laws of physics such as the conservation laws of mass and momentum and the thermodynamic laws. Especially, the angular momentum conservation is necessary to calculate rotational motion of high-viscous objects. However, most of the particle methods do not satisfy the physical laws in their spatially discretized system. The angular momentum conservation law is broken mostly because of the viscosity models, which may result in physically strange behavior when high-viscous free-surface flow is calculated. In this study, a physically consistent particle method for high-viscous free-surface flows is developed. The present method was verified, and its performance was shown with calculating flow in a rotating circular pipe, high-viscous Taylor–Couette flow, and offset collision of a high-viscous object.
Differences in COVID-19 Vaccine Concerns Among Asian Americans and Pacific Islanders: The COMPASS Survey
Authors: Ta Park Van , Dougan Marcelle , Meyer Oanh , Nam Bora , Tzuang Marian , Park Linda , Vuong Quyen , Tsoh Janice 
Published: April 2021

Abstract
Background
Understanding concerns for receiving COVID-19 vaccines is key to ensuring appropriately tailored health communications to increase vaccine uptake. However, limited data exists about vaccine concerns among Asian Americans and Pacific Islanders (AAPI).

Methods
Data from the COVID-19 Effects on the Mental and Physical Health of AAPI Survey Study (COMPASS), a cross-sectional, national survey for AAPI adults in the U.S. were used (N=1,646). Descriptive statistics were used to assess sample characteristics including proportions of AAPI with various COVID-19 vaccine concerns, categorized as none, side-effects only, unsafe only, and multiple reasons, and differences in vaccine concerns by socio-demographics. Ordinary multivariable logistic regression analyses were conducted to evaluate associations between a characteristic and having any vaccine concerns.

Results
Overall, 76% of the respondents reported having at ≥1 concerns about the vaccine. The most common concern was side effects (65%). Vietnamese Americans reported less concerns (vs. Chinese Americans). Those who were 30-39 and 40-49 years old (vs. <30), females (vs. males), and experienced mild negative impacts from COVID-19 on family income/employment (vs. no change) reported more concerns about the vaccine. Those who had less vaccine concerns were those who reported higher (vs. low) health status, ≥60 years old (vs. <30), and separated/divorced/widowed (vs. single).

Discussion
AAPI is a diverse population and this study revealed differences in vaccine concerns across AAPI groups. Findings revealed potential targets for patient education needs. Effective strategies to address various vaccine concerns across subgroups of AAPI will be crucial to ensure equity in vaccination uptake.
A Workload-Adaptive Streaming Partitioner for Distributed Graph Stores
Authors: Davoudian Ali , Chen Liu , Tu Hongwei , Liu Mengchi 
Published: April 2021

AbstractStreaming graph partitioning methods have recently gained attention due to their ability to scale to very large graphs with limited resources. However, many such methods do not consider workload and graph characteristics. This may degrade the performance of queries by increasing inter-node communication and computational load imbalance. Moreover, existing workload-aware methods cannot consistently provide good performance as they do not consider dynamic workloads that keep emerging in graph applications. We address these issues by proposing a novel workload-adaptive streaming partitioner named WASP, that aims to achieve low-latency and high-throughput online graph queries. As each workload typically contains frequent query patterns, WASP exploits the existing workload to capture active vertices and edges which are frequently visited and traversed, respectively. This information is used to heuristically improve the quality of partitions either by avoiding the concentration of active vertices in a few partitions proportional to their visit frequencies or by reducing the probability of the cut of active edges proportional to their traversal frequencies. In order to assess the impact of WASP on a graph store and to show how easily the approach can be plugged on top of the system, we exploit it in a distributed graph-based RDF store. Our experiments over three synthetic and real-world graph datasets and the corresponding static and dynamic query workloads show that WASP achieves a better query performance against state-of-the-art graph partitioners, especially in dynamic query workloads.
Contested Daily Routines, Contested Care. Children with Type 1 Diabetes in Covid-19 Times
Authors: Şahinol Melike , Başkavak Gülşah 
Published: April 2021

AbstractThe conventional treatment of Type 1 Diabetes (T1D) is especially demanding for children, both physically and psychologically (Iversen et al. Int J Qual Stud Health Well-being,13(1), 1487758, 2018). Continuous Glucose Monitoring Systems (CGM) are an important aid for children and their families in dealing with the disease. In their work, however, Şahinol and Başkavak (2020) point out that CGM carry the risk of viewing T1D as a technologically solvable problem instead of considering the disease as a whole. This is mainly creating confidence in technology due to CGM experiences while neglecting significant dietary measures and exercises needed to be integrated into daily routines. During the current pandemic, this problem seems to take on a whole new level. Based on two periods of in-depth interviews and observations conducted with 8 families with T1D children aged 6 to 14 living in Istanbul and Ankara (Turkey) from May to November 2019 and again from May to June 2020, we compare and focus on the experiences prior to and during the pandemic time. We argue that despite the possibility of technological regulation of the disease, the vulnerability of children is increased and, more than ever, depends on socio-bio-technical entanglements.
Rashi, Biblical Interpretation, and Latin Learning in Medieval Europe
Authors: Cohen Mordechai Z. 
Published: April 2021

In this volume, Mordechai Z. Cohen explores the interpretive methods of Rashi of Troyes (1040–1105), the most influential Jewish Bible commentator of all time. By elucidating the 'plain sense' (peshat) of Scripture, together with critically selected midrashic interpretations, Rashi created an approach that was revolutionary in the talmudically-oriented Ashkenazic milieu. Cohen contextualizes Rashi's commentaries by examining influences from other centers of Jewish learning in Muslim Spain and Byzantine lands. He also opens new scholarly paths by comparing Rashi's methods with trends in Latin learning reflected in the Psalms commentary of his older contemporary, Saint Bruno the Carthusian (1030–1101). Drawing upon the Latin tradition of enarratio poetarum ('interpreting the poets'), Bruno applied a grammatical interpretive method and incorporated patristic commentary selectively, a parallel that Cohen uses to illuminate Rashi's exegetical values. Cohen thereby brings to light the novel literary conceptions manifested by Rashi and his key students, Josef Qara and Rashbam.
The Education System between Private Business and the State: The Antagonism and Synergies of Industrial and State Paternalism in the Vítkovice Company Town (1869–1914)
Authors: Gecko Tomáš , Kaucká Kristýna 
Published: April 2021

AbstractThis article aims at analyzing, within the scope of industrial and state paternalism, the interdependent dynamics between employer (Witkowitzer Bergbau- und Eisenhüttengewerkschaft), employee, and the Austro-Hungarian state, taking as an example the development of the education system of the Vítkovice (Witkowitz) company town, located in Moravia, one of the crown lands of the Habsburg Monarchy. The opening point of our research is the year 1869, when the so-called Hasner school law was adopted. The closing point is February 1914, with its new intervention into educational policy in the crown land of Moravia.
REDUCTIONS OF POINTS ON ALGEBRAIC GROUPS, II
Authors: BRUIN PETER , PERUCCA ANTONELLA 
Published: April 2021

AbstractLet A be the product of an abelian variety and a torus over a number field K, and let
$$m \ge 2$$
be a square-free integer. If
$\alpha \in A(K)$
is a point of infinite order, we consider the set of primes
$\mathfrak p$
of K such that the reduction
$(\alpha \bmod \mathfrak p)$
is well defined and has order coprime to m. This set admits a natural density, which we are able to express as a finite sum of products of
$\ell$
-adic integrals, where
$\ell$
varies in the set of prime divisors of m. We deduce that the density is a rational number, whose denominator is bounded (up to powers of m) in a very strong sense. This extends the results of the paper Reductions of points on algebraic groups by Davide Lombardo and the second author, where the case m prime is established.
Antipsychotic treatment and risk of discontinuation and hospitalization in first-episode schizophrenia: a nationwide population-based study
Authors: Joo Sung Woo , Kim Harin , Jo Young Tak , Choi Young Jae , Ahn Soojin , Lee Jungsun 
Published: April 2021

AbstractBackgroundCurrent evidence on antipsychotic treatment and risk of psychiatric hospitalization in first-episode schizophrenia (FES) is largely based on the findings from randomized clinical trials (RCTs). However, the generalization of the findings to real-world patients is limited due to inherent caveats of the RCT. We aimed to investigate the treatment discontinuation and risk of psychiatric hospitalization using a nationwide population database.MethodsThe Health Insurance Review Agency database in South Korea was obtained, and the observation period started from 1 January 2009 to 31 December 2016. We defined the maintenance period as the period from 6-month after the diagnosis of schizophrenia, which is utilized for the main results. For a total of 44 396 patients with FES, a within-individual Cox regression model was used to compare the risk of the treatment discontinuation and psychiatric hospitalization.ResultsIn group comparison, a long-acting injectable (LAI) antipsychotic group was associated with the lowest risk of the treatment discontinuation (0.64, 0.55–0.75) and psychiatric hospitalization (0.29, 0.22–0.38) in comparison with a typical antipsychotic group and no use, respectively. Among individual antipsychotics, the lowest risk of the treatment discontinuation was observed in LAI paliperidone (0.46, 0.37–0.66) compared to olanzapine. Clozapine was found to be the most effective antipsychotic in lowering the risk of psychiatric hospitalization as monotherapy compared to no use (0.23, 0.18–0.31).ConclusionsIn real-world patients with FES, LAI paliperidone and clozapine were associated with low treatment discontinuation and better effectiveness in lowering the risk of psychiatric hospitalization.
The impact of computer-aided concept mapping on EFL learners’ lexical diversity: A process writing experiment
Authors: Hassanzadeh Mohammad , Saffari Elahe , Rezaei Saeed 
Published: April 2021

AbstractNowadays, many second/foreign language (L2) academic writing instruction programs place a high premium on pre-writing strategies. The current study examined the effect of software-supported concept mapping on lexical diversity (LD) of English learners’ argumentative essays within a process writing framework. Additionally, the relationship between the learners’ LD and their overall writing quality was investigated. To this end, 53 university English as a foreign language (EFL) undergraduates were assigned to a computer-aided concept mapping (CACM) and a traditional outlining condition over a span of seven weeks. The CACM group was instructed through the graphic organizer software Inspiration®, whereas the comparison group underwent outlining instruction for planning their writing tasks. Measure of textual lexical diversity (MTLD) was used to assess the so-called D values of the assignments. The results revealed that the CACM group outperformed the outlining group in terms of LD scores. Also, no relationship was found between LD and overall quality of the essays. The findings provide L2 researchers and teachers with insights into understanding the use of CACM strategy in process writing. Moreover, exploiting MTLD afforded our experiment the opportunity to counteract potential pitfalls associated with text size. Further implications for the L2 teacher are also discussed.
Universal and unavoidable graphs
Authors: Bucić Matija , Draganić Nemanja , Sudakov Benny 
Published: April 2021

AbstractThe Turán number ex(n, H) of a graph H is the maximal number of edges in an H-free graph on n vertices. In 1983, Chung and Erdős asked which graphs H with e edges minimise ex(n, H). They resolved this question asymptotically for most of the range of e and asked to complete the picture. In this paper, we answer their question by resolving all remaining cases. Our result translates directly to the setting of universality, a well-studied notion of finding graphs which contain every graph belonging to a certain family. In this setting, we extend previous work done by Babai, Chung, Erdős, Graham and Spencer, and by Alon and Asodi.
Origin of Electron‐Scale Magnetic Fluctuations Close to an Electron Diffusion Region
Authors: Hoilijoki S. , Pucci F. , Ergun R. E. , Schwartz S. J. , Wilder F. D. , Eriksson S. , Chasapis A. , Ahmadi N. , Webster J. M. , Burch J. L. , Torbert R. B. , Strangeway R. J. , Giles B. L. 
Published: April 2021

AbstractDuring a dayside magnetopause crossing, the Magnetospheric Multiscale (MMS) mission observed a series of magnetic depletions in the total magnetic field, mainly due to the fluctuation of the component normal to the magnetopause. These fluctuations are adjacent to signatures suggesting that the MMS is at, or close to (<di), a magnetic reconnection electron diffusion region (EDR). The temporal and spatial scales of the fluctuations are too short for the ions to be affected. In this paper we investigate the origin of these fluctuations, finding that they can develop from temporal variations of the reconnection rate at the nearby EDR. Indeed asymmetric reconnecting current sheets, and the nearby regions, are subject to multiple different instabilities, and may be affected by waves and turbulence activity. Here we suggest such oscillations in the normal component of the magnetic field can be interpreted either as i) electron‐scale structures, forming due to changes in the outflow speed and the corresponding changes in the angle between the separatrices, causing magnetic field to pile up or ii) electron vortices generated by enhanced sheared electron outflows, driving electron‐scale Kelvin–Helmholtz instability.
Out‐of‐Phase Decadal Change in Drought Over Northeast China Between Early Spring and Late Summer Around 2000 and Its Linkage to the Atlantic Sea Surface Temperature
Authors: Hu Yuepeng , Zhou Botao , Han Tingting , Li Huixin , Wang Huijun 
Published: April 2021

AbstractBased on the standardized precipitation evaporation index (SPEI) and empirical orthogonal function (EOF) analysis, this article presents that the primary mode (i.e., a monosign pattern) of drought over Northeast China (NEC) in early spring (February‐March‐April, FMA) and late summer (July‐August‐September, JAS) shows an out‐of‐phase decadal change, which is characterized with a wetting polarity in FMA while a drying polarity in JAS approximately after 2000 as compared to the counterparts before that time. Such an out‐of‐phase decadal change is generally supported by the decadal changes in atmospheric circulations. Compared to the former period, during the latter period, the equivalent barotropic cyclonic (anticyclonic) anomalies dominate northeastern Asia and an anomalous ascending occupies NEC in FMA (JAS), which help to alleviate (aggravate) drought over NEC. In addition, decreases in water vapor transport toward the NEC region act in the aggravation of drought in JAS, while the variation of drought in FMA is not closely connected to the change in water vapor transport. Further analyses indicate that the shifts of the sea surface temperature (SST) in the tropical and mid‐high latitude Atlantic Ocean from a cold phase to a warm phase also play a role in the decadal change of drought in FMA and JAS, respectively, through their influences on the above atmospheric circulations with the aid of downstream propagation of wave trains. Hence, the seasonal dependence of the Atlantic SST and atmospheric circulations contributes to the out‐of‐phase decadal change of drought in NEC.
Asymmetric Impacts on Mars’ Polar Vortices From an Equinoctial Global Dust Storm
Authors: Streeter Paul M. , Lewis Stephen R. , Patel Manish R. , Holmes James A. , Fedorova Anna A. , Kass David M. , Kleinböhl Armin 
Published: April 2021

AbstractMars possesses dynamical features called polar vortices: regions of cold, isolated air over the poles circumscribed by powerful westerly jets which can act as barriers to transport to dust, water, and chemical species. The 2018 Global Dust Storm was observed by multiple orbiters and offered a valuable opportunity to study the effects of such a storm on polar dynamics. To this end, we assimilate data from the Mars Climate Sounder and Atmospheric Chemistry Suite into a Mars Global Climate Model. We find that the storm had asymmetrical hemispherical impacts, with the northern vortex remaining relatively robust while the southern vortex was substantially diminished in its intensity. We propose that this asymmetry was due both to the storm’s latitudinal extent, as it extended further south than north, and to its equinoctial timing, occurring as the southern vortex was already decaying. We show that both polar vortices, in particular the northern, were reduced in ellipticity by the storm. There was a well‐correlated reduction in stationary topographic wave activity at high latitudes in both hemispheres. We demonstrate that the characteristic elliptical Martian polar vortex shape is the pattern of the stationary waves, which was suppressed by the shifting of the polar jet away from regions of high mechanical forcing (north) or reduction of polar jet intensity by a reduced meridional temperature gradient (south). These asymmetric effects suggest increased transport into the southern (but not northern) polar region during global dust storms at northern autumn equinox, and more longitudinally symmetric transport around both poles.
Numerical Simulations of Meanders Migrating Laterally as They Incise Into Bedrock
Authors: Inoue Takuya , Mishra Jagriti , Parker Gary 
Published: April 2021

AbstractThe problem of meandering in mixed bedrock‐alluvial rivers is more challenging than that of purely alluvial streams, in that alluvial, bed incisional and bank incisional morphodynamics must be accounted for. Here we present a numerical formulation that addresses heretofore unanswered questions. Bed incision is based on abrasion due to saltating grains. The model satisfies mass conservation of alluvium over a partially covered bedrock surface. Bank incision is treated in terms of a measure of the incipient collision of bedload particles with the bank. It is assumed that land accretes along the inside of point bars when the water depth falls below a specified shallow value. All but one of the runs are performed with repetitive two‐step hydrographs. Runs starting from a low‐amplitude sine‐generated curve indicate that sinuosities at least as high as 2.5 can be achieved. The rate of increase of sinuosity declines in time, but does not vanish. For the same hydrograph, increasing the initial thickness of alluvium on the bed causes the rate of vertical bedrock incision to decline, and bend sinuosity to increase at a faster rate. At a sufficiently high thickness, the channel migrates laterally without bed lowering. Bend shape can change dramatically with increasing alluvial thickness, with high thickness favoring more regular bend trains. For the same initial alluvial thickness, increasing the peak flow of the hydrograph causes the vertical incision rate and the rate of sinuosity growth to increase. The model thus captures a wide range of behavior associated with bedrock meandering.