bluuebunny/crossref_metadata_2025_split huggingface dataset:
The evolution of data science and big data research: A bibliometric analysis
Authors: Raban Daphne R. , Gordon Avishag 
Published: January 2020

AbstractIn this study the evolution of Big Data (BD) and Data Science (DS) literatures and the relationship between the two are analyzed by bibliometric indicators that help establish the course taken by publications on these research areas before and after forming concepts. We observe a surge in BD publications along a gradual increase in DS publications. Interestingly, a new publications course emerges combining the BD and DS concepts. We evaluate the three literature streams using various bibliometric indicators including research areas and their origin, central journals, the countries producing and funding research and startup organizations, citation dynamics, dispersion and author commitment. We find that BD and DS have differing academic origin and different leading publications. Of the two terms, BD is more salient, possibly catalyzed by the strong acceptance of the pre-coordinated term by the research community, intensive citation activity, and also, we observe, by generous funding from Chinese sources. Overall, DS literature serves as a theory-base for BD publications.
On the average number of cyclic subgroups of the groups $${\mathbb {Z}}_{n_1} \times {\mathbb {Z}}_{n_2}\times {\mathbb {Z}}_{n_3}$$ with $$n_1,n_2,n_3\le x$$
Authors: Tóth László , Zhai Wenguang 
Published: January 2020

AbstractLet $${{\mathbb {Z}}}_{n}$$Zn be the additive group of residue classes modulo n. Let $$c(n_1,n_2,n_3)$$c(n1,n2,n3) denote the number of cyclic subgroups of the group $${{\mathbb {Z}}}_{n_1}\times {{\mathbb {Z}}}_{n_2}\times {{\mathbb {Z}}}_{n_3}$$Zn1×Zn2×Zn3, where $$n_1, n_2$$n1,n2 and $$n_3$$n3 are arbitrary positive integers. In this paper we obtain an asymptotic formula for the sum $$\sum _{n_1,n_2,n_3\le _x} c(n_1,n_2,n_3).$$∑n1,n2,n3≤xc(n1,n2,n3).
Online reactions to the 2017 ‘Unite the right’ rally in Charlottesville: measuring polarization in Twitter networks using media followership
Authors: Tien Joseph H. , Eisenberg Marisa C. , Cherng Sarah T. , Porter Mason A. 
Published: January 2020

AbstractNetwork analysis of social media provides an important new lens on politics, communication, and their interactions. This lens is particularly prominent in fast-moving events, such as conversations and action in political rallies and the use of social media by extremist groups to spread their message. We study the Twitter conversation following the August 2017 ‘Unite the Right’ rally in Charlottesville, Virginia, USA using tools from network analysis and data science. We use media followership on Twitter and principal component analysis (PCA) to compute a ‘Left’/‘Right’ media score on a one-dimensional axis to characterize Twitter accounts. We then use these scores, in concert with retweet relationships, to examine the structure of a retweet network of approximately 300,000 accounts that communicated with the #Charlottesville hashtag. The retweet network is sharply polarized, with an assortativity coefficient of 0.8 with respect to the sign of the media PCA score. Community detection using two approaches, a Louvain method and InfoMap, yields communities that tend to be homogeneous in terms of Left/Right node composition. We also examine centrality measures and find that hyperlink-induced topic search (HITS) identifies many more hubs on the Left than on the Right. When comparing tweet content, we find that tweets about ‘Trump’ were widespread in both the Left and Right, although the accompanying language (i.e., critical on the Left, but supportive on the Right) was unsurprisingly different. Nodes with large degrees in communities on the Left include accounts that are associated with disparate areas, including activism, business, arts and entertainment, media, and politics. By contrast, support of Donald Trump was a common thread among the Right communities, connecting communities with accounts that reference white-supremacist hate symbols, communities with influential personalities in the alt-right, and the largest Right community (which includes the Twitter account ).
High-efficiency 50 W burst-mode hundred picosecond green laser
Authors: Ma Ning , Chen Meng , Yang Ce , Lu Shang , Zhang Xie , Du Xinbiao 
Published: January 2020

We report high-energy, high-efficiency second harmonic generation in a near-infrared all-solid-state burst-mode picosecond laser at a repetition rate of 1 kHz with four pulses per burst using a type-I noncritical phase-matching lithium triborate crystal. The pulses in each burst have the same time delay (

${\sim}1~\text{ns}$

), the same pulse duration (

${\sim}100~\text{ps}$

) and different relative amplitudes that can be adjusted separately. A mode-locked beam from a semiconductor saturable absorber mirror is pulse-stretched, split into seed pulses and injected into a Nd:YAG regenerative amplifier. After the beam is reshaped by aspheric lenses, a two-stage master oscillator power amplifier and 4f imaging systems are applied to obtain a high power of

${\sim}100~\text{W}$

. The 532 nm green laser has a maximum conversion efficiency of 68%, an average power of up to 50 W and a beam quality factor

$M^{2}$

of 3.5.
Bioaerosols generated from toilet flushing in rooms of patients with Clostridioides difficile infection
Authors: Wilson Geneva M. , Jackson Virgil B. , Boyken Linda D. , Schweizer Marin L. , Diekema Daniel J. , Petersen Christine A. , Breheny Patrick J. , Nonnenmann Matthew W. , Perencevich Eli N. ,   for the CDC Prevention Epicenter Program
Published: January 2020

AbstractBackground:Clostridioides difficile infection (CDI) is the most frequently reported hospital-acquired infection in the United States. Bioaerosols generated during toilet flushing are a possible mechanism for the spread of this pathogen in clinical settings.Objective:To measure the bioaerosol concentration from toilets of patients with CDI before and after flushing.Design:In this pilot study, bioaerosols were collected 0.15 m, 0.5 m, and 1.0 m from the rims of the toilets in the bathrooms of hospitalized patients with CDI. Inhibitory, selective media were used to detect C. difficile and other facultative anaerobes. Room air was collected continuously for 20 minutes with a bioaerosol sampler before and after toilet flushing. Wilcoxon rank-sum tests were used to assess the difference in bioaerosol production before and after flushing.Setting:Rooms of patients with CDI at University of Iowa Hospitals and Clinics.Results:Bacteria were positively cultured from 8 of 24 rooms (33%). In total, 72 preflush and 72 postflush samples were collected; 9 of the preflush samples (13%) and 19 of the postflush samples (26%) were culture positive for healthcare-associated bacteria. The predominant species cultured were Enterococcus faecalis, E. faecium, and C. difficile. Compared to the preflush samples, the postflush samples showed significant increases in the concentrations of the 2 large particle-size categories: 5.0 µm (P = .0095) and 10.0 µm (P = .0082).Conclusions:Bioaerosols produced by toilet flushing potentially contribute to hospital environmental contamination. Prevention measures (eg, toilet lids) should be evaluated as interventions to prevent toilet-associated environmental contamination in clinical settings.
The subjective perception of the association between psychotic experiences and suicidal behavior among young adults
Authors: Lehmann M. , Nam B. , Hilimire M. , DeVylder J. E. 
Published: January 2020

AbstractObjectivesPsychotic experiences such as hallucinations and delusions are reported by approximately 7.2% of the general population, even in the absence of a psychotic disorder. Individuals who report such psychotic experiences are significantly more likely to endorse suicidal ideation and behavior across several large epidemiological samples. This study aimed to determine whether individuals who reported psychotic experiences and suicidal behavior would subjectively endorse a causal relationship between these two clinical phenomena.MethodsFive open-ended questions were asked via online survey to 12 college students who had previously reported both hallucination-like experiences and suicidal behavior in a quantitative survey. Thematic analysis was used to analyze open-ended responses.ResultsThe majority of respondents, n (%) = 11 (91.6), did not endorse a notable subjective relationship between psychosis and suicidal ideation or suicide attempts. However, respondents did spontaneously report that stigma and fear may drive suicidal ideation among people who report psychotic experiences and other symptoms of psychological distress.ConclusionsThese findings are generally inconsistent with the hypothesis that psychotic experiences are directly related to suicidal behavior, and are consistent with the alternative hypothesis that both psychotic experiences and suicidal behavior are indicators of common underlying factors such as general psychological distress, potentially exacerbated by stigma.
The Cultural Sources of the Gender Gap in Voter Turnout
Authors: Dassonneville Ruth , Kostelka Filip 
Published: January 2020

AbstractRecent publications argue that the traditional gender gap in voting has decreased or reversed in many democracies. However, this decrease may apply only to some types of elections. Building on prior studies, this article hypothesizes that although women participate at the same or higher rates than men in national elections, they participate less in supranational elections. The authors investigate this possibility empirically by analyzing the evolution of the gender gap in voter turnout in elections to the European Parliament (EP). The article makes three important contributions. First, it shows the presence and stability of the traditional gender gap in EP elections. Secondly, it finds that gender differences in political interest are the main source of this gender gap. Thirdly, these gender differences in political interest are, in turn, context dependent. They are strongly associated with cultural gender differences, which are captured through differences in boys’ and girls’ maths scores.
Psychosocial Influences on Patient Presentations: Considerations for Research and Evaluation at Mass-Gathering Events
Authors: Hutton Alison , Ranse Jamie , Gray Katherine Lena , Turris Sheila , Lund Adam , Munn Matthew Brendan 
Published: January 2020

AbstractAim:This review discusses the need for consistency in mass-gathering research and evaluation from a psychosocial perspective.Background:Mass gatherings occur frequently throughout the world. Having an understanding of the complexities of mass gatherings is important to determine required health resources. Factors within the environmental, psychosocial, and biomedical domains influence the usage of health services at mass gatherings. A standardized approach to data collection is important to identify a consistent reporting standard for the psychosocial domain.Method:This research used an integrative literature review design. Manuscripts were collected using keyword searches from databases and journal content pages from 2003 through 2018. Data were analyzed and categorized using the existing minimum data set as a framework.Results:In total, 31 manuscripts met the inclusion criteria. The main variables identified were use of alcohol or drugs, crowd behavior, crowd mood, rationale, and length of stay.Conclusion:Upon interrogating the literature, the authors have determined that the variables fall under the categories of alcohol or drugs; maladaptive and adaptive behaviors; crowd behavior, crowd culture, and crowd mood; reason for attending event (motivation); duration; and crowd demographics. In collecting psychosocial data from mass gatherings, an agreed-upon set of variables that can be used to collect de-identified psychosocial variables for the purpose of making comparisons across societies for mass-gathering events (MGEs) would be invaluable to researchers and event clinicians.
Alive and Kicking: Reflections on the Evolving Role of Subject Support Librarians at UWE Bristol
Authors: Shreeve Sue , Hamley Julie 
Published: January 2020

AbstractIn this article Sue Shreeve and Julie Hamley give an overview of how the subject support librarian role at UWE Bristol has evolved over the last five years, broadening from subject information specialist to encompass academic skills support and English language/communication skills support. They outline how they have implemented this change in role profile by evolving the skills set of the subject librarians and share some of the student online learning materials that have been created during this evolution in role.
Farming system effects on biologically mediated plant–soil feedbacks
Authors: Menalled Uriel D. , Seipel Tim , Menalled Fabian D. 
Published: January 2020

AbstractCropping system characteristics such as tillage intensity, crop identity, crop-livestock integration and the application of off-farm synthetic inputs influence weed abundance, plant community composition and crop-weed competition. The resulting plant community, in turn, has species-specific effects on soil microbial communities which can impact the growth and competitive ability of subsequent plants, completing a plant–soil feedback (PSF) loop. Farming systems that minimize the negative impacts of PSFs on subsequent crop growth can increase the sustainability of the farming enterprise. This study sought to assess the individual and combined impact of the cropping system (certified organic-grazed, certified organic till and conventional no-till) and crop sequence [pairwise rotations with safflower (Carthamus tinctorius), yellow sweet clover (Melilotus officinalis) and winter wheat (Triticum aestivum)] on the PSF magnitude and direction. All cropping systems followed the same 5-year rotation and had completed one full rotation before soil was sampled. In a greenhouse setting, a sterile soil mix was inoculated with field soil collected from all systems and three crops. The PSF study consisted of two stages (conditioning and response phases) that mimicked the rotation stages occurring in the field. PSFs were calculated by comparing the biomass of the response phase plants grown in inoculated and uninoculated soils. The farm management system affected PSFs, inferring that tillage reduction can encourage more positive PSFs. Crop sequence did not affect PSF but interacted strongly with the farm system. As such, the effects of the farming system on PSFs are best illustrated when taken into account with the identity of the previous and current crops of a cropping sequence.
Short-term ubiquinol-10 supplementation alleviates tissue damage in	muscle and fatigue caused by strenuous exercise in male distance	runners
Authors: Suzuki Yoshio , Nagato Shunsuke , Sakuraba Keishoku , Morio Katsuya , Sawaki Keisuke 
Published: January 2020

Abstract. Background: Coenzyme Q10 (CoQ10) is the electron transporter in oxidative phosphorylation and an endogenous antioxidant. Recent researches have indicated that doses of 200–300 mg/day are needed to recognize effects to prevent oxidative damage in athletes, and the reduced form of CoQ10, ubiquinol-10, is more bioavailable than its oxidized form. Therefore, we hypothesized that higher doses of ubiquinol-10 could elevate plasma CoQ10 levels rapidly and exert physiological benefits in athletes. Therefore, a placebo controlled, double blinded test was carried out to determine the effects of ubiquinol-10 on the extravasate enzymes and fatigue levels of distance runners. Methods: Sixteen male collegiate distance runners were allocated to two groups receiving 300 mg/day of ubiquinol-10 (19.8 ± 1.7 years) or a placebo (20.1 ± 1.6 years) for 12 days during summer training that comprised 25- and 40-km runs on days 7 and 9, respectively. Results: Ubiquinol-10 elevated plasma CoQ10 concentration to 5.62 μg/mL and significantly decreased activities of the serum extravasate enzymes, CK, ALT, LDH (P < 0.01), and AST (P < 0.05) on day 6. Subjective fatigue status was significantly elevated on day 10 (the day after the 45-km run) in the placebo group (P < 0.001), but did not significantly change in the group given ubiquinol-10. Therefore, ubiquinol-10 could mitigate tissue damage and alleviate fatigue status in distance runners during summer training. Conclusions: Ubiquinol-10 (300 mg/day) supplementation elevated plasma CoQ10 concentrations almost to plateau levels, decreased extravasate enzymes within six days, and suppressed the subjective fatigue in male distance runners.
Anisotropy of Full and Partial Anhysteretic Remanence Across Different Rock Types: 1—Are Partial Anhysteretic Remanence Anisotropy Tensors Additive?
Authors: Biedermann Andrea R. , Jackson Mike , Stillinger Michele D. , Bilardello Dario , Feinberg Joshua M. 
Published: January 2020

AbstractSeveral types or grain sizes of ferromagnetic minerals can contribute to a rock's remanence and anisotropy of remanence. Each subpopulation may have a different fabric. Measuring anisotropy of partial anhysteretic remanent magnetization (ApARM) allows one to determine the anisotropy contribution of subpopulations with different coercivity distributions. Separating these contributions to remanence anisotropy can provide information about early versus late stages of deformation in fabric studies and is the basis for improved anisotropy corrections in paleomagnetic studies. Unfortunately, collecting multiple ApARM tensors on each specimen is time‐consuming and not often done. Measuring a smaller number of carefully chosen ApARM tensors and obtaining the remaining tensors of interest by tensor calculation would be more efficient. This can only be done, however, when ApARM tensors are additive. Here we investigate the additivity of ApARM tensors in a range of lithologies, by measuring a total of seven ApARM and anisotropy of anhysteretic remanent magnetization (AARM) tensors for each specimen, and comparing the tensors calculated from a combination of ApARM tensors to the corresponding measured AARM. Differences in principal directions between measured and calculated tensors are often smaller than the confidence angles of the measurements. Mean anhysteretic remanences are additive to within ±5%. The anisotropy degree varies by ±30% (k′) or ±0.15 (P), and the shape parameter U by ±0.4. These error limits will help to determine whether or not it is necessary to measure each ApARM tensor in future fabric or paleomagnetic studies, or if these tensors can be calculated from a smaller set of measurements.
Radiometric Stability of the SABER Instrument
Authors: Mlynczak Martin G. , Daniels Taumi , Hunt Linda A. , Yue Jia , Marshall B. Thomas , Russell James M. , Remsberg Ellis E. , Tansock Joseph , Esplin Roy , Jensen Mark , Shumway Andrew , Gordley Larry , Yee J.‐H. 
Published: January 2020

AbstractThe SABER instrument on the National Aeronautics and Space Administration Thermosphere‐Ionosphere‐Mesosphere Energetics and Dynamics satellite continues to provide a long‐term record of Earth's stratosphere, mesosphere, and lower thermosphere. The SABER data are being used to examine long‐term changes and trends in temperature, water vapor, and carbon dioxide. A tacit, central assumption of these analyses is that the SABER instrument radiometric calibration is not changing with time; that is, the instrument is stable. SABER stratospheric temperatures and those derived from Global Positioning System Radio Occultation measurements are compared to examine SABER's stability. Global Positioning System Radio Occultation measurements are inherently stable due to the accuracy and traceability of the measured phase delay rate to the Système Internationale definition of the second. Differences in global annual mean SABER and COSMIC lower stratospheric temperatures show little significant change with time in the 11 years spanning 2007–2017. From this analysis we infer that SABER temperatures are stable to better than 0.1 to 0.2 K per decade.
The Environmental Footprint of Transport by Car Using Renewable Energy
Authors: Holmatov Bunyod , Hoekstra Arjen Y. 
Published: January 2020

AbstractReplacing fossil fuels in the transport sector by renewable energy will help combat climate change. However, lowering greenhouse gas emissions by switching to alternative fuels or electricity can come at the expense of land and water resources. To understand the scale of this possible trade‐off, we compare and contrast carbon, land, and water footprints per driven km in midsize cars utilizing conventional gasoline, biofuels, bioelectricity, solar electricity, and solar‐based hydrogen. Results show that solar‐powered electric cars have the smallest environmental footprints per km, followed by solar‐based hydrogen cars, and that biofuel‐driven cars have the largest footprints.
Assessing the Impact of Initialization on Decadal Prediction Skill
Authors: Sospedra‐Alfonso Reinel , Boer George J. 
Published: January 2020

AbstractAn alternative approach to evaluating the correlation skill of near‐term climate predictions is proposed. The approach separately quantifies the skill of the initialized and uninitialized components of the forecast and their contributions to overall correlation skill. The initialized component consists of the predictable part of the internally generated natural variability and that part of the externally forced component affected by initialization. The methodology is applied to results from the latest Canadian Centre for Climate Modelling and Analysis' decadal prediction system. The initialized component of annual mean temperature forecasts exhibits regional skill over ocean and land. The contribution to overall skill is modest at longer ranges and for multiyear temperature averages, partly because of the strong temperature response to external forcing. Larger ensembles increase the percentage of global area with predictable variance due to initialization and the contribution to overall skill from the initialized component of the forecast.
C1GALT1 is associated with poor survival and promotes soluble Ephrin A1-mediated cell migration through activation of EPHA2 in gastric cancer
Authors: Lee Po-Chu , Chen Syue-Ting , Kuo Ting-Chun , Lin Tzu-Chi , Lin Mei-Chun , Huang John , Hung Ji-Shiang , Hsu Chia-Lang , Juan Hsueh-Fen , Lee Po-Huang , Huang Min-Chuan 
Published: January 2020

AbstractC1GALT1 controls the crucial step of GalNAc-type O-glycosylation and is associated with both physiologic and pathologic conditions, including cancers. EPH receptors comprise the largest family of receptor tyrosine kinases (RTKs) and modulate a diverse range of developmental processes and human diseases. However, the role of C1GALT1 in the signaling of EPH receptors remains largely overlooked. Here, we showed that C1GALT1 high expression in gastric adenocarcinomas correlated with adverse clinicopathologic features and is an independent prognostic factor for poor overall survival. Silencing or loss of C1GALT1 inhibited cell viability, migration, invasion, tumor growth and metastasis, as well as increased apoptosis and cytotoxicity of 5-fluorouracil in AGS and MKN45 cells. Phospho-RTK array and western blot analysis showed that C1GALT1 depletion suppressed tyrosine phosphorylation of EPHA2 induced by soluble Ephrin A1-Fc. O-glycans on EPHA2 were modified by C1GALT1 and both S277A and T429A mutants, which are O-glycosites on EPHA2, dramatically enhanced phosphorylation of Y588, suggesting that not only overall O-glycan structures but also site-specific O-glycosylation can regulate EPHA2 activity. Furthermore, depletion of C1GALT1 decreased Ephrin A1-Fc induced migration and reduced Ephrin A1 binding to cell surfaces. The effects of C1GALT1 knockdown or knockout on cell invasiveness in vitro and in vivo were phenocopied by EPHA2 knockdown in gastric cancer cells. These results suggest that C1GALT1 promotes phosphorylation of EPHA2 and enhances soluble Ephrin A1-mediated migration primarily by modifying EPHA2 O-glycosylation. Our study highlights the importance of GalNAc-type O-glycosylation in EPH receptor-regulated diseases and identifies C1GALT1 as a potential therapeutic target for gastric cancer.