bluuebunny/crossref_metadata_2025_split huggingface dataset:
Vibration problem solution of high-capacity hydropower units
Authors: Khalyasmaa A.I. , Sultonov S.M. , Ahyoev J.S. , Bahovadinov A.H. 
Published: May 2020

Abstract
This paper proposes hydro generator vibration observations under various conditions and solution of a problem of high vibration in upper guide bearing of 110MW hydro generator. Among the test, which were carried out to identify vibration origin of hydro generating unit were: voltage drop tests, magnetic flux measurements, interferric gap measurements, turbine pressure pulsation measurements, etc. It was shown, that among other possible reasons, correct balancing, including pivot bearing adjustment was the most efficient measure to eliminate vibration in start-up modes of hydro power unit. According to the results of conducted step-by-step defect analysis, the corresponding recommendations were provided for service and maintenance regarding the generation unit No2 of Sangtuda-2 Hydro Power Plant, Tajikistan.
Material & Surface design methodology—the user study framework
Authors: Bergman M , Rosen B-G , Eriksson L , Lundeholm L 
Published: May 2020

Abstract
A material and surface selection within the car industry is usually based on a comprehensive study based on sensation and perception, focusing on particular perceived qualities and impressions (emotional functions) through visual and tactile interaction of plastic surfaces. On top of that ‘emotional function’, the ‘technical function’ such as surface roughness or gloss for a certain matter in symbiosis, will result in a number of material and surface proposals. The range of materials fitting into the window of these requirements varies depending on the industry’s ability to hit the target specified in regard to the ‘emotional functions’, usually defined by the designer’s intention. Thus, to be able to get a deeper understanding of how to frame the ‘emotional functions’ and link them to the ‘technical functions’, two user studies were made in this paper. The user studies were made with two different designs however with the same main research target to be able to understand the varieties of these two. The aim of doing so was to be able to find the user study design that was the most time efficient and providing the most significant data linked to the ‘technical functions’ and process control/traceability. However also finding the user study design with the least strains for the participating users in regard to uninterrupted brain activity. By designing the user study in relevant subsets in a certain sequence, user study design nr 2 has proven to be more time efficient and provide more data regarding the soft metrology. Future work will focus on deeper knowledge about how these surfaces different material- and surface properties correlate to the participants responses regarding perceived quality of a car interior design. The development of a new non-contact measurement is also discussed, enabling the possibility to complement and improve the hard metrology set up.
Pharmacist-led program to improve transitions from acute care to skilled nursing facility care
Authors: Achilleos Maria , McEwen Jordan , Hoesly Megan , DeAngelo Mark , Jennings Tim 
Published: May 2020

Abstract

Purpose
A pharmacist-led process to improve medication management in transitions from acute care to skilled nursing facility (SNF) care is described.

Summary
The process of transitioning patients from an acute care facility to a SNF involves multiple steps, with the potential for delays in medication administration. As part of a health system’s effort to evaluate barriers to timely first-dose administration after hospital-to-SNF transfers, a multidisciplinary team was tasked with defining the frequency of missed doses of high-risk medications and identifying reasons for medication administration delays. A retrospective review was conducted to evaluate medication orders for patients discharged from a community hospital and admitted to a SNF from January through June 2017 (the baseline period). This review found that 60% of first doses of high-risk medications were given after the scheduled administration time. One major barrier identified was a delay in entering medication orders in the SNF electronic medical record after SNF admission. It was also observed that 30-day readmission rates for transferred patients exceeded established readmission rate targets. To address identified process barriers, a pharmacist-led pilot program was developed. The program focused on process improvements at the same 2 hospitals and SNF sites during the period of March through May 2018. The pharmacist reviewed, reconciled, and entered medication orders prior to patient arrivals to the SNF. After pharmacist implementation, order entry delays were eliminated, and the mean delay from medication due time to administration was decreased by 68% relative to baseline data. The discharge summaries of 51% of transferred patients were found to contain medication errors, most of which were clarified and resolved prior to SNF admission. It was observed that the 30-day all-cause readmission rate after SNF transfers during the pilot program was 10.4% lower than during the same timeframe of the previous year.

Conclusion
By implementing a pharmacist-led process for medication management in transitions from acute care to SNF care, major barriers such as delayed medication administration and medication order entry were reduced. In addition, discharge medication errors were addressed and resolved prior to patients’ admission to the SNF.
Hitchhiking consequences for genetic and morphological patterns: the influence of kelp-rafting on a brooding chiton
Authors: Salloum P M , de Villemereuil P , Santure A W , Waters J M , Lavery S D 
Published: May 2020

AbstractOnithochiton neglectus is a morphologically variable, brooding chiton inhabiting coastal reefs throughout New Zealand and its Sub-Antarctic Islands. Southern O. neglectus populations are typically associated with buoyant kelp (Durvillaea spp.) and are potentially connected via kelp-rafting. Northern O. neglectus populations are less likely to raft, due to lower numbers of Durvillaea in northern New Zealand. To test for the impact of kelp-rafting on the spatial distribution of variation in O. neglectus, we undertook a combined analysis of morphological and genetic variation across the range of the species. Geometric morphometrics were used to assess shell shape. We detected a northern vs. southern split in shell shape, corresponding to the frequency of the O. neglectus/Durvillaea spp. association. To assess O. neglectus genetic patterns across New Zealand, we estimated phylogenetic trees with nuclear (ITS) and mitochondrial (COI and 16S) markers, which revealed distinct northern and southern lineages, and an additional lineage in central New Zealand. Neither the morphological nor genetic groups match existing O. neglectus subspecies, but are concordant with the patterns of association of O. neglectus with Durvillaea. We suggest that shell shape may be linked to O. neglectus’ regionally variable ecological association with kelp holdfasts.
Phylogeny and evolution of unique skull morphologies in dietary specialist African shovel-snouted snakes (Lamprophiidae:Prosymna)
Authors: Heinicke Matthew P , Titus-McQuillan James E , Daza Juan D , Kull Elizabeth M , Stanley Edward L , Bauer Aaron M 
Published: May 2020

AbstractProsymna is a specialized African snake genus lacking close relatives. The evolutionary relationships and history within Prosymna are poorly understood. Here we assembled a multi-gene data set including representatives for 11 of 16 species to investigate the phylogenetic relationships of this group. Our analyses support the monophyly of Prosymna and are congruent with species groups previously recognized on the basis of external morphology. Divergences among extant Prosymna began in the mid-Cenozoic, with the earliest divergence splitting northern from southern lineages. High-resolution computed tomography scans confirm that a specialized skull morphology is found across the genus and was probably present in the common ancestor of Prosymna. This specialization is exemplified by dentition featuring reduced anterior but greatly enlarged, blade-like posterior maxillary teeth and an unusually high degree of fusion of cranial bones. One species, P. visseri, has a hammer-like maxilla unlike that of any other known snake. Evidence for oophagy in Prosymna and the possible roles of morphological specializations in egg-slitting or egg-crushing feeding mechanisms are discussed.
Hydroxychloroquine in Coronavirus Disease 2019 Patients: What Still Needs to Be Known About the Kinetics
Authors: Martin-Blondel Guillaume , Ruiz Stéphanie , Murris Marlène , Faguer Stanilas , Duhalde Véronigue , Eyvrard Frédéric , Izopet Jacques , Mansuy Jean-Michel , Rolland Yves , Delavigne Karen , Guimbaud Rosine , Pugnet Grégory , Conil Jean-Marie , Georges Bernard , Delobel Pierre , Minville Vincent , Silva Sifontes Stein , Concordet Didier , Gandia Peggy 
Published: May 2020

Abstract
Different dosage regimens of hydroxychloroquine are used to manage coronavirus disease 2019 (COVID-19) patients, without information on the pharmacokinetics in this population. Blood samples (n = 101) were collected from 57 COVID-19 patients for 7 days, and concentrations were compared with simulated kinetic profiles. Hydroxychloroquine exposure is low and cannot be predicted by other populations.
An invasive insect, hemlock woolly adelgid, indirectly impacts Louisiana Waterthrush nest site selection and nest survival in the southern Appalachians
Authors: Bryant Lee C , Beachy Tiffany A , Boves Than J 
Published: May 2020

AbstractEastern hemlock (Tsuga canadensis) is declining throughout the eastern United States due to hemlock woolly adelgid (Adelges tsugae Annand), an invasive insect from Asia. In the southern Appalachians, hemlock is concentrated in moist ravines and its decline threatens riparian ecosystems. Previous research on this invasion has focused on adelgid control and how hemlock decline affects community composition or forest processes; few studies have evaluated the consequences for demography of obligate riparian species. The Louisiana Waterthrush (Parkesia motacilla) is an obligate riparian species that could be sensitive to hemlock condition in this region, but how individuals respond to decline is currently unknown. To address this knowledge gap, we leveraged recent adelgid treatment efforts in Great Smoky Mountains National Park to evaluate the relationship(s) between hemlock decline and waterthrush habitat selection (foraging and nest site) and vital rates (nest and adult survival). We found that hemlock decline was unrelated to foraging habitat selection and apparent adult survival, but was related to nest site selection through an interaction with percent ground cover of exposed live tree roots: birds selected for nest sites in areas with more exposed live roots but only when hemlock was in poor condition. Nest survival was lower in areas where deciduous species (vs. evergreen species) dominated the understory, suggesting that adelgid invasion could indirectly impact waterthrush fitness depending on how vegetative succession proceeds following hemlock decline. Our results suggest that the short-term consequences of adelgid invasion on this riparian avian species are minimal in this area, but these relationships are likely dynamic and dependent on local habitat features and the predator community response to hemlock decline.
Strategies and recommendations for the management of gastrointestinal surgery during the COVID-19 pandemic: experience shared by Chinese surgeons
Authors: Ke Jia , Lan Nan , Wang Ting , Wu Jin-Jie , He Zhen , He Xiao-Sheng , Tao Kai-Xiong , Qian Qun , Zhou Ping-Hong , Li Guo-Xin , Zheng Min-Hua , Zhang Zhong-Tao , Ji Jia-Fu , Lan Ping 
Published: May 2020

AbstractNovel coronavirus disease-2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is an ongoing public-health pandemic worldwide. Although SARS-CoV-2 has been known to spread primarily through respiratory droplets, recent evidence also supports fecal/oral as an additional route of transmission, raising concerns over gastrointestinal (GI) transmission of the infection. Herein, we, as the front-line Chinese GI surgeons, would like to share our experience and lessons in the combat against COVID-19. It is essential to create science-based, rational, and practical strategies during the outbreak of COVID-19. Here, we provide multi-institutional consensus on minimizing disease transmission while continuing to provide care from all aspects for patients in GI surgery, including outpatient clinics, inpatient units, gastrointestinal endoscopy centers, and adjustments in perioperative care. Our experiences and recommendations are worth sharing and may help to establish specific infection-control and outcome measures.
‘To the very great prejudice of the fair trader’: merchants and illicit naval trading in the 1730s*
Authors: Mewett R E 
Published: May 2020

Abstract
In 1737–8, officers aboard three British warships sent to Africa to secure seaborne commerce engaged in private trade themselves, in violation of navy regulations and parliamentary statute, and carried enslaved Africans to Barbados. Slave trading merchants from Bristol, Liverpool and London – whose business was hurt by this illegal competition – co-ordinated efforts and lobbied the admiralty and the house of commons to put a stop to naval trading and gain restitution for their losses. The episode was part of a long process of negotiation among stakeholders in the developing fiscal-naval state that eventually produced shared expectations about naval professionalism and the duty of commerce protection that were significantly influenced by mercantile interests.
Applicability of Wordnet Architecture in Lexical Borrowing Studies
Authors: Geller Ewa , Gajek Michał , Reibach Agata , Łapa Zuzanna 
Published: May 2020

AbstractThe aim of the paper is to present a new, wordnet-based method of studying lexical borrowing. In contrast to the two-dimensional (micro- and macrostructure) organization of traditional dictionaries, describing each unit in isolation, wordnets introduce an additional dimension of inter-word relations in the entire lexicon. The ability to connect wordnets cross-linguistically allows in turn for juxtaposing, comparing, and visualizing a broad spectrum of lexical relations between loanwords within the recipient language and their cognates in the source language for which the term cross-linguistic mapping has been used. The method was applied to a wordnet-based, yet differently structured network of Polish loanwords in Yiddish. This allowed to supplement the traditional typology of transferred words by introducing the notion of ‘rootedness’, that is the degree of their interconnectedness in the source and recipient systems. This in turn has provided a promising means for distinguishing inherited from acquired vocabulary.
Rethinking domain adaptation for machine learning over clinical language
Authors: Laparra Egoitz , Bethard Steven , Miller Timothy A 
Published: May 2020

Abstract
Building clinical natural language processing (NLP) systems that work on widely varying data is an absolute necessity because of the expense of obtaining new training data. While domain adaptation research can have a positive impact on this problem, the most widely studied paradigms do not take into account the realities of clinical data sharing. To address this issue, we lay out a taxonomy of domain adaptation, parameterizing by what data is shareable. We show that the most realistic settings for clinical use cases are seriously under-studied. To support research in these important directions, we make a series of recommendations, not just for domain adaptation but for clinical NLP in general, that ensure that data, shared tasks, and released models are broadly useful, and that initiate research directions where the clinical NLP community can lead the broader NLP and machine learning fields.
Characterizing physicians’ information needs related to a gap in knowledge unmet by current evidence
Authors: Ostropolets Anna , Chen RuiJun , Zhang Linying , Hripcsak George 
Published: May 2020

Abstract

Objective
The study sought to explore information needs arising from a gap in clinicians’ knowledge that is not met by current evidence and identify possible areas of use and target groups for a future clinical decision support system (CDSS), which will guide clinicians in cases where no evidence exists.

Materials and Methods
We interviewed 30 physicians in a large academic medical center, analyzed transcripts using deductive thematic analysis, and developed a set of themes of information needs related to a gap in knowledge unmet by current evidence. We conducted additional statistical analyses to identify the correlation between clinical experience, clinical specialty, settings of clinical care, and the characteristics of the needs.

Results
This study resulted in a set of themes and subthemes of information needs arising from a gap in current evidence. Experienced physicians and inpatient physicians had more questions and the number of questions did not decline with clinical experience. The main areas of information needs included patients with comorbidities, elderly and children, new drugs, and rare disorders. To address these questions, clinicians most often used a commercial tool, guidelines, and PubMed. While primary care physicians preferred the commercial tool, specialty physicians sought more in-depth knowledge.

Discussion
The current medical evidence appeared to be inadequate in covering specific populations such as patients with multiple comorbidities and elderly, and was sometimes irrelevant to complex clinical scenarios. Our findings may suggest that experienced and inpatient physicians would benefit from a CDSS that generates evidence in real time at the point of care.

Conclusions
We found that physicians had information needs, which arose from the gaps in current medical evidence. This study provides insights on how the CDSS that aims at addressing these needs should be designed.
On the stellar kinematics and mass of the Virgo ultradiffuse galaxy VCC 1287
Authors: Gannon Jonah S , Forbes Duncan A , Romanowsky Aaron J , Ferré-Mateu Anna , Couch Warrick J , Brodie Jean P 
Published: May 2020

ABSTRACT
Here, we present a kinematical analysis of the Virgo cluster ultradiffuse galaxy (UDG) VCC 1287 based on data taken with the Keck Cosmic Web Imager (KCWI). We confirm VCC 1287’s association both with the Virgo cluster and its globular cluster (GC) system, measuring a recessional velocity of 1116 ± 2 km s−1. We measure a stellar velocity dispersion (19 ± 6 km s−1) and infer both a dynamical mass ($1.11^{+0.81}_{-0.81} \times 10^{9} \ \mathrm{M_{\odot }}$) and mass-to-light ratio (M/L) ($13^{+11}_{-11}$) within the half-light radius (4.4 kpc). This places VCC 1287 slightly above the well-established relation for normal galaxies, with a higher M/L for its dynamical mass than normal galaxies. We use our dynamical mass, and an estimate of GC system richness, to place VCC 1287 on the GC number–dynamical mass relation, finding good agreement with a sample of normal galaxies. Based on a total halo mass derived from GC counts, we then infer that VCC 1287 likely resides in a cored or low-concentration dark matter halo. Based on the comparison of our measurements to predictions from simulations, we find that strong stellar feedback and/or tidal effects are plausibly the dominant mechanisms in the formation of VCC 1287. Finally, we compare our measurement of the dynamical mass with those for other UDGs. These dynamical mass estimates suggest relatively massive haloes and a failed galaxy origin for at least some UDGs.
Variations of the mixing character of dipolar mixed modes in red giant stars
Authors: Jiang C , Cunha M , Christensen-Dalsgaard J , Zhang QS 
Published: May 2020

ABSTRACT
Because of the high-quality data of space missions, the detection of mixed modes has become possible in numerous stars. In this work, we investigate how the mixing character of dipolar mixed modes changes with stellar evolution, as well as with frequency within each stellar model. This is achieved by monitoring the variations in the coupling strength and the period spacing of dipolar mixed modes in red-giant models. These parameters are measured by fitting the asymptotic expansion of mixed modes to the model frequencies of a grid of red-giant models with masses between 1.0 and 2.0 M⊙ and three different chemical abundances. The coupling strength and the period spacing decrease with stellar evolution. We find that the slopes of their decreasing trends depend on the radial order of the pressure mode component. A non-negligible increase of the coupling strength with frequency by up to around 40 per cent is found in the observable frequency range for a set of red-giant models. On the contrary, no significant changes of the period spacing with frequency are found. The changes in the mixing character of the modes are in most cases affected by the model mass and metallicity. Buoyancy glitches also have an impact on the mixing character. Significant fluctuations in the estimated coupling strength and period spacing are found for models approaching the luminosity bump, if the glitch impact of the frequencies is not considered in the applied asymptotic expansion.
The Central Role of Nondisclosed Men Who Have Sex With Men in Human Immunodeficiency Virus-1 Transmission Networks in Guangzhou, China
Authors: Yan Huanchang , He Weiyun , Huang Liping , Wu Hao , Liang Yuanhao , Li Qingmei , Shui Jingwei , Wang Cheng , Dzakah Emmanuel E , Han Zhigang , Tang Shixing 
Published: May 2020

Abstract

Background
Men who have sex with men (MSM) are vulnerable risk group for human immunodeficiency virus (HIV)-1 infection. However, some MSM do not disclose their same-sex behavior and could impact the transmission and prevention of HIV-1 infection. Here, we evaluated the role of nondisclosed MSM in HIV-1 transmission in Guangzhou, China.

Methods
The HIV-1 pol sequences were obtained from HIV-infected subjects from 2008 to 2015. A transmission network was constructed using HIV TRAnsmission Cluster Engine (HIV-TRACE) at a pairwise genetic distance of 0.5%. The position of nondisclosed MSM in the network was determined by centrality analysis.

Results
Nondisclosed MSM were inferred in 9.92% (61 of 615) of slightly older, self-reported non-MSM (P = .006). They were more likely to be married (P = .002) and less educated (P &lt; .001) than the MSM with whom they clustered. Closeness centrality was bigger for nondisclosed MSM than for MSM (P &lt; .001), indicating the central position of nondisclosed MSM in the networks. The average shortest path length was smaller for nondisclosed MSM than for MSM (P &lt; .001), whereas radiality was bigger for nondisclosed MSM than for MSM, suggesting a relatively greater contribution of nondisclosed MSM in transmitting HIV-1 than MSM. Assortativity analysis indicated that nondisclosed MSM were more likely to link each other with coefficient of 0.025.

Conclusions
Nondisclosed MSM are a specific group, and they play an important role in HIV-1 transmission. They could be bisexual and might increase the risk of HIV-1 infection to their sex partners. Therefore, specific prevention and intervention targeting nondisclosed MSM are urgently needed.