bluuebunny/crossref_metadata_2025_split huggingface dataset:
Uncovering the internal structure of Boko Haram through its mobility patterns
Authors: Prieto Curiel Rafael , Walther Olivier , O’Clery Neave 
Published: June 2020

AbstractBoko Haram has caused nearly 40,000 casualties in Nigeria, Niger, Cameroon and Chad, becoming one of the deadliest Jihadist organisations in recent history. At its current rate, Boko Haram takes part in more than two events each day, taking the lives of nearly 11 people daily. Yet, little is known concerning Boko Haram’s internal structure, organisation, and its mobility.Here, we propose a novel technique to uncover the internal structure of Boko Haram based on the sequence of events in which the terrorist group takes part. Data from the Armed Conflict Location & Event Data Project (ACLED) gives the location and time of nearly 3,800 events in which Boko Haram has been involved since the organisation became violent 10 years ago. Using this dataset, we build an algorithm to detect the fragmentation of Boko Haram into multiple cells, assuming that travel costs and reduced familiarity with unknown locations limit the mobility of individual cells.Our results suggest that the terrorist group has a very high level of fragmentation and consists of at least 50–60 separate cells. Our methodology enables us to detect periods of time during which Boko Haram exhibits exceptionally high levels of fragmentation, and identify a number of key routes frequently travelled by separate cells of Boko Haram where military interventions could be concentrated.
On sharp surface force model: Effect of sharpening coefficient
Authors: Vachaparambil Kurian J. , Einarsrud Kristian Etienne 
Published: June 2020

AbstractAmongst the multitude of approaches available in literature to reduce spurious velocities in Volume of Fluid approach, the Sharp Surface Force (SSF) model is increasingly being used due to its relative ease to implement. The SSF approach relies on a user-defined parameter, the sharpening coefficient, which determines the extent of the smeared nature of interface used to determine the surface tension force. In this paper, we use the SSF model implemented in OpenFOAM® to investigate the effect of this sharpening coefficient on spurious velocities and accuracy of dynamic, i.e., capillary rise, and static bubble simulations. Results show that increasing the sharpening coefficient generally reduces the spurious velocities in both static and dynamic cases. Although static millimeter sized bubbles were simulated with the whole range of sharpening coefficients, sub-millimeter sized bubbles show nonphysical behavior for values larger than 0.3. The accuracy of the capillary rise simulations has been observed to change non-linearly with the sharpening coefficient. This work illustrates the importance of using an optimized value of the sharpening coefficient with respect to spurious velocities and accuracy of the simulation.
Purification of Turkish Bentonites and Investigation of the Contact Angle, Surface Free Energy and Zeta Potential Profiles of Organo-Bentonites as a Function of CTAB Concentration
Authors: Çiftçi H. , Ersoy B. , Evcin A. 
Published: June 2020

AbstractPurification of raw bentonites and organo-bentonite preparations is sometimes required for industrial use. Zeta (electrokinetic) potential (ζ), contact angle (wettability/hydrophobicity), and surface free energy (SFE) are important surface characteristics and vary significantly according to the applied surfactant concentration when preparing organo-bentonite. Changes in these characteristics determine the stability, behavior, and efficiency of organo-bentonites in various applications such as adsorption, composite materials, and drug-delivery systems. Knowing how much surfactant should be used to prepare organo-bentonite is, therefore, critical. The purpose of the present study was to determine the effect of concentration of the cationic surfactant cetyltrimethylammonium bromide (CTAB) adsorbed in organo-bentonite (prepared from two local and commercial raw bentonites with potential for use in adsorbent and composite materials) on the ζ potential, contact angle, and SFE profiles. The raw bentonites were purified using sedimentation and centrifugation techniques prior to preparation of the organo-bentonite. The purification results were evaluated in light of X-ray diffraction (XRD), cation exchange capacity (CEC), free swelling volume (FSV), X-ray fluorescence (XRF), and particle-size analysis data. Most of the gangue minerals (feldspar, calcite, clinoptilolite, opal, quartz, and mica) having particle size >5 μm were removed from the raw bentonites by using a one-stage sedimentation or a Falcon gravity separator (FGS). Higher yields (68.8% and 81.3% for two bentonites) were obtained with the FGS compared to sedimentation while purification levels were almost the same. ζ changed greatly from –35 mV (and –40 mV) toward 38 mV (and 40 mV) with increasing CTAB concentrations. Similar profiles were also obtained for wettability; maximum contact angles for organo-bentonites were measured as ~72–73o, while they were 12.65 and 14.1o for two purified and unmodified bentonites. SFEs were calculated using contact-angle data, and decreased to minimum values of 41.5–43.6 mJ/m2 from 78.6–78.2 mJ/m2 upon treatment of raw bentonites with CTAB. 100–130% CEC concentration was sufficient to prepare organo-bentonites with maximum hydrophobicity and positively charged surfaces.
A Survey Exploring the Relationship Between Cannabis Use Characteristics and Sexual Function in Men
Authors: Bhambhvani Hriday P. , Kasman Alex M. , Wilson-King Genester , Eisenberg Michael L. 
Published: June 2020

Abstract

Introduction
Cannabis is the most commonly used drug in the United States; however, the effects of cannabis use on male sexual function are poorly understood.

Aim
To characterize the contemporary landscape of cannabis use and to assess the associations between male sexual function and the frequency of use, the primary method of consumption, or cannabis chemovar (tetrahydrocannabinol or cannabidiol) among current users.

Methods
We surveyed adults who visited a single cannabis dispensary for baseline demographic information, medical history, cannabis use habits, and sexual function as assessed by the International Index of Erectile Function (IIEF). An IIEF-5 &lt; 21 was considered erectile dysfunction.

Main Outcome Measures
The main outcome measure of the study was male sexual function via the IIEF domain scores.

Results
A total of 325 men completed the survey with a mean age of 46.7 years. 71.1% of the men were Caucasian and 52.6% were married. 13 men (4%) were never users; 29 men (8.9%) used 1–2 times/week; 51 men (15.7%) used 3–5 times/week, and 232 men (71.4%) used 6+ times/week. The average IIEF-5 score was 22.3 with 19.4% of the men having erectile dysfunction. In univariate analysis, men using cannabis more frequently had a higher overall IIEF (65.36 vs 60.52, P = .001), erectile domain (27.32 vs 25.74, P = .03), orgasm domain (9.08 vs 8.12, P &lt; .001), intercourse satisfaction domain (12.42 vs 11.31, P = .006), and overall satisfaction domain (8.11 vs 7.05, P = .002). In multivariable analysis, compared to men who used cannabis 0 times/week, those who used 6 times/week had an increased overall IIEF (69.08 vs 64.64, P-value adjusted = 0.02), intercourse satisfaction domain (P-value adjusted = 0.04), and overall satisfaction domain (P-value adjusted = 0.02). The primary method of consumption (eg, smoking, edibles, etc.) and cannabinoid composition (eg, cannabidiol vs tetrahydrocannabinol dominant) were not associated with sexual function.

Conclusion
We report an association between the increased frequency of cannabis use and increased male sexual function. However, while the increased frequency of use was statistically significant with regard to the IIEF scores, the clinical significance of this is likely low, and selection bias may limit the generalizability of these findings. The method of consumption and cannabis chemovar were not associated with sexual function.
From Gender toOmeotlization: Toward a Decolonial Ontology
Authors: Matallana-Peláez Susana E. 
Published: June 2020

AbstractThis article examines the treatment of gender and the woman question in the ongoing Latin American decolonial debate. More specifically, it traces how the Zapatistas and other indigenous movements as well as some of the main mestizo male voices in this debate have endeavored to frame these issues and the criticism they have received from María Lugones and other decolonial feminists. It then points to some of the limitations in Lugones's own approach, and in a final stream of discussion, it explores some of the ways in which these limitations might be surpassed within a decolonial framework that follows closely indigenous ontological thought.
Oral vancomycin prophylaxis against recurrentClostridioides difficileinfection: Efficacy and side effects in two hospitals
Authors: Zacharioudakis Ioannis M. , Zervou Fainareti N. , Dubrovskaya Yanina , Phillips Michael S. 
Published: June 2020

AbstractObjective:The data regarding the effectiveness of chemical prophylaxis against recurrentC. difficileinfection (CDI) remain conflicting.Design:Retrospective cohort study on the effectiveness of oral vancomycin for prevention of recurrent CDI.Setting:Two academic centers in New York.Methods:Two participating hospitals implemented an automated alert recommending oral vancomycin 125 mg twice daily in patients with CDI history scheduled to receive systemic antimicrobials. Measured outcomes included breakthrough and recurrent CDI rates, defined as CDI during and 1 month after initiation of prophylaxis, respectively. A self-controlled, before-and-after study design was employed to examine the effect of vancomycin prophylaxis on the prevalence of vancomycin-resistantEnterococcusspp (VRE) colonization and infection.Results:We included 264 patients in the analysis. Breakthrough CDI was identified in 17 patients (6.4%; 95% confidence interval [CI], 3.8%–10.1%) and recurrent in 22 patients (8.3%; 95% CI, 5.3%–12.3%). Among the 102 patients with a history of CDI within the 3 months preceding prophylaxis, 4 patients (3.9%; 95% CIs, 1.1%–9.7%) had breakthrough CDI and 9 had recurrent disease (8.8%; 95% CIs, 4.1%–16.1%). In the 3-month period following vancomycin prophylaxis, we detected a statistically significant increase in both the absolute number of VRE (χ2, 0.003) and the ratio of VRE to VSE isolates (χ2, 0.003) compared to the combined period of 1.5 months preceding and the 3–4.5 months following prophylaxis. This effect persisted 6 months following prophylaxis.Conclusions:Prophylactic vancomycin is an effective strategy to prevent CDI recurrence, but it increases the risk of VRE colonization. Thus, a careful selection of patients with high benefit-to-risk ratio is needed for the implementation of this preventive policy.
A new species of Creptotrematina (Trematoda: Allocreadiidae) from characid fishes of Brazil: morphological and molecular data
Authors: Alves Dias K.G. , Pérez-Ponce de León G. , de Almeida Camargo A. , Müller M.I. , da Silva R.J. , Kozlowiski de Azevedo R. , Abdallah V.D. 
Published: June 2020

Abstract
A new species of Creptotrematina Yamaguti, 1954 was collected from characid fishes, Astyanax fasciatus (Cuvier, 1819) and Astyanax lacustris Lucerna & Soares, 2016 from the Batalha River in the State of Sao Paulo, Brazil. The new species most closely resembles Creptotrematina aguirrepequenoi, but differs by the elongated shape of vitelline follicles, the extension of these follicles in the posterior end of body and the fact that they are not confluent. The morphological differences were confirmed through molecular data. Three specimens were sequenced, and molecular analyses were based on the internal transcribed spacers 2 and D1–D3 domains of the 28S ribosomal RNA gene. The obtained topologies showed the new species as a sister taxon of C. aguirrepequenoi, a species originally described from Astyanax mexicanus in Mexico, and later found in Astyanax aeneus in Costa Rica. Isolates of the new species are reciprocally monophyletic, and genetic distance values are similar to those observed in other species pairs within Allocreadiidae. These findings corroborate that the genus Creptotrematina is mostly a parasite of characids, and widely extended across the Americas, with representative species occurring between Argentina and northern Mexico.
Union of the European Phoniatricians’ position statement on the exit strategy of phoniatric and laryngological services: staying safe and getting back to normal after the peak of coronavirus disease 2019 (issued on 25th May 2020)
Authors: Geneid A , Nawka T , Schindler A , Oguz H , Chrobok V , Calcinoni O , am Zehnhoff-Dinnesen A , Neumann K , Farahat M , Abou-Elsaad T , Moerman M , Chavez E , Fishman J , Yazaki R , Arnold B , Frajkova Z , Graf S , Pflug C , Drsata J , Desuter G , Samuelsson C , Tedla M , Costello D , Sjögren E , Hess M , Kinnari T , Rubin J 
Published: June 2020

AbstractBackgroundThe following position statement from the Union of the European Phoniatricians, updated on 25th May 2020 (superseding the previous statement issued on 21st April 2020), contains a series of recommendations for phoniatricians and ENT surgeons who provide and/or run voice, swallowing, speech and language, or paediatric audiology services.ObjectivesThis material specifically aims to inform clinical practices in countries where clinics and operating theatres are reopening for elective work. It endeavours to present a current European view in relation to common procedures, many of which fall under the aegis of aerosol generating procedures.ConclusionAs evidence continues to build, some of the recommended practices will undoubtedly evolve, but it is hoped that the updated position statement will offer clinicians precepts on safe clinical practice.
A bio-physicochemical perspective of the Bay of Bengal
Authors: Sarker Subrata , Panassa Essowè , Hossain M. Shahadat , Chowdhury Sayedur Rahman , Yadav Atul Kumar , Sharifuzzaman S.M. 
Published: June 2020

AbstractKnowledge of bio-physicochemical variables is essential to better understand the functioning of tropical marine ecosystems, which are rich in biodiversity and provide nutrition and livelihoods to billions of people in the developing countries. This study analysed the spatial and temporal variability of phytoplankton and zooplankton with chlorophyll, primary productivity, temperature, salinity, oxygen and nutrients in the Bay of Bengal (BoB), collecting data from the World Ocean, and COPEPOD and Aqua MODIS records. The results indicated a strong gradient in bio-physicochemical conditions of the BoB, from the coast to the open sea. Specifically, the spatial variability in chlorophyll was negatively correlated (R2= 0.59) with temperature and zooplankton, while a positive correlation (R2= 0.70) was noted between chlorophyll and silicate, nitrate, phosphate, dissolved oxygen and salinity. All the variables exhibited a strong vertical gradient at depths up to 500 m. Temperature, nutrients, zooplankton and to a lesser extent salinity and rainfall had an influence on the annual abundance of phytoplankton. Over the long term, a significant positive trend in temperature and a significant negative trend in primary productivity were observed in the BoB. The findings of this study will be useful to draw insights on the state of fisheries habitats and the overall environmental conditions of the BoB in response to future climate changes.
Long-term outcome predictors after functional remediation in patients with bipolar disorder
Authors: Solé B. , Bonnín C. M. , Radua J. , Montejo L. , Hogg B. , Jimenez E. , Reinares M. , Valls E. , Varo C. , Pacchiarotti I. , Valentí M. , Garriga M. , Torres I. , Martínez-Arán A. , Vieta E. , Torrent C. 
Published: June 2020

AbstractBackgroundImproving functioning in patients with bipolar disorder (BD) is one of the main objectives in clinical practice. Of the few psychosocial interventions that have been specifically developed to enhance the psychosocial outcome in BD, functional remediation (FR) is one which has demonstrated efficacy. The aim of this study was to examine which variables could predict improved functional outcome following the FR intervention in a sample of euthymic or subsyndromal patients with BD.MethodsA total of 92 euthymic outpatients were included in this longitudinal study, with 62 completers. Partial correlations controlling for the functional outcome at baseline were calculated between demographic, clinical and neurocognitive variables, and functional outcome at endpoint was assessed by means of the Functioning Assessment Short Test scale. Next, a multiple regression analysis was run in order to identify potential predictors of functional outcome at 2-year follow-up, using the variables found to be statistically significant in the correlation analysis and other variables related to functioning as identified in the previous scientific literature.ResultsThe regression model revealed that only two independent variables significantly contributed to the model (F(6,53): 4.003; p = 0.002), namely verbal memory and inhibitory control. The model accounted for 31.2% of the variance. No other demographic or clinical variable contributed to the model.ConclusionsResults suggest that patients with better cognitive performance at baseline, especially in terms of verbal memory and executive functions, may present better functional outcomes at long term follow-up after receiving functional remediation.
THE STUCCOED AND PAINTED BENCHES OF XOCHICALCO, MORELOS, MEXICO
Authors: Nielsen Jesper , Alvarado León Claudia , Helmke Christophe 
Published: June 2020

AbstractThe cultural tradition of stuccoed and polychromatic murals in central Mexico dates back to Early Classic Teotihuacan and continued into the subsequent Epiclassic period, with the stunning murals from Cacaxtla as the most famous and well-studied example. In this paper, we present three examples of stuccoed and richly painted benches or thrones from the mayor Epiclassic site of Xochicalco in the Mexican state of Morelos. A careful iconographic and epigraphic analysis of the imagery, as well as the associated hieroglyphic signs from one of the benches, leads us to suggest that these benches played a pivotal role in displaying the religious, mythological, and historical underpinnings of hierarchical power at Xochicalco. Based on comparisons with benches and seats from Classic Maya culture and, in particular, the contemporaneous Terminal Classic city of Chichen Itza, which was deeply involved in interregional relations with central Mexico, we also suggest that the Xochicalco benches may even have served as royal seats or thrones.
First systematic sampling approach to estimating the global population size of the Critically Endangered Blue-throated MacawAra glaucogularis
Authors: HERZOG SEBASTIAN K. , MAILLARD Z. OSWALDO , BOORSMA TJALLE , SÁNCHEZ-ÁVILA GUSTAVO , GARCÍA-SOLÍZ VÍCTOR HUGO , PACA-CONDORI ANAHÍ C. , DE ABAJO MARTA VAÍLEZ , SORIA-AUZA RODRIGO W. 
Published: June 2020

SummaryReliable population size estimates are imperative for effective conservation and management of globally threatened birds like the ‘Critically Endangered’ Blue-throated MacawAra glaucogularis.Endemic to one of South America’s largest grassland floodplains, the Llanos de Moxos in northern Bolivia, the species’ global population size is uncertain. The region’s inaccessibility renders the application of traditional methods for obtaining bird population estimates impracticable or cost prohibitive. We developed a simultaneous, multilocality, double-sampling approach combined with quantitative habitat availability analyses to obtain the first rigorous population size estimate for the Blue-throated Macaw. We established 11 survey areas across its three subpopulations that were visited twice by one team in each subpopulation over a 23-day period in the 2015 dry season and obtained additional count data from two roost sites. We classified suitable habitat (palm forest islands) using Landsat 8 images and CLASlite forest monitoring software. We extrapolated the number of macaws detected (conservative estimate of the total number of macaws [CETN], highest single count [HSC]) per 100 ha of suitable habitat in each survey area to the entire area of suitable habitat in all subpopulations combined, corrected for the species’ range occupancy of 34.3%. The total number of Blue-throated Macaws detected by survey (CETN) and roost site counts was 137. Across all survey areas, the number of macaws per 100 ha of suitable habitat was 4.7 for the first and 4.4 for the second period for CETN and 3.2 and 3.4, respectively, for HSC data. Corresponding global population estimates were 426–455 (CETN) and 312–329 (HSC) individuals. Other recent research and anecdotal data support these estimates. Although it would be premature to propose downlisting the species to ‘Endangered’, our findings indicate that it has a larger population and slightly larger range than previously thought, and that the positive effects of conservation actions are now becoming apparent.
REAGAN’S AUSTERITY BUREAUCRATS
Authors: Ndubuizu Rosemary Nonye 
Published: June 2020

AbstractIn 1982, President Ronald Reagan’s administration initiated a dramatic policy shift towards a new housing voucher program, which simultaneously resulted in a near-halt in public and project-based assisted housing funding. When analyzing this historic policy shift, many affordable housing scholars have overemphasized race-absent narratives about fiscal austerity to explain the Reagan administration’s policy rejection of public housing and embrace of housing vouchers. To present a more comprehensive and intersectional history of the Reagan administration’s transition to housing vouchers, I employ an alternative methodological lens that I call Black feminist critical policy studies. This paper traces how the Office of Management and Budget and Housing and Urban Development officials relied on obscured racial and gender bias in their debate informing Reagan's alternative housing voucher program. By revealing the social bias endemic in the Reagan administration’s housing debate, this article illustrates that housing vouchers were not simply a neutral, cost-efficient policy tool but helped ensure low-income black mothers’ continued subjection to anti-welfare backlash, housing discrimination, and paternal supervision.
1913 in Indonesian History: Demanding Equality, Changing Mentality
Authors: Luttikhuis Bart , van der Meer Arnout H. C. 
Published: June 2020

AbstractIn 1913, a new generation of Indonesians asserted their agency by publicly demanding equality in colonial society. Through four case studies—the prohibition of traditional forms of deference, the sudden popularity of Western dress, the adoption of new legal assimilation guidelines for Indonesians, and the discussion of employee rights at a railway company—we argue that this new assertiveness reflected a broad change in mentality that we consider a turning point in Indonesian history. By focusing on Indonesian agency, we challenge the Eurocentric periodization of the Indonesian past that emphasized WWI as a trigger of change.